Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided for prioritizing the performance of measurements during measurement gaps and the reception of multicast/broadcast content. The apparatus receives a configuration from a serving cell to perform a measurement during a measurement gap of a unicast service while in a connected mode. In addition, the apparatus determines whether to refrain from leaving the serving cell on a first frequency and performing the measurement on a second frequency of a neighboring cell in order to receive multicast/broadcast content associated with a multicast/broadcast service during the measurement gap.
Abstract:
Uplink synchronization processes in multi-carrier time division-synchronous code division multiple access (TD-SCDMA) systems include determining uplink transmission timing for a first carrier frequency and performing uplink synchronization on the other carrier frequencies based on the transmission timing of the first carrier frequency. The transmission timing may be adjusted based on a timing offset that is measured between the received downlink pilot signals of the various carrier frequencies. User equipment may perform uplink synchronization individually with each of the carriers serviced by a particular Node B after receiving synchronization information regarding those carrier frequencies.
Abstract:
Certain embodiments of the present disclosure provide methods and systems for saving battery power in frequency division duplex (FDD) or half-duplex FDD (H-FDD) wireless networks.
Abstract:
In geographical areas with incomplete Time Division Synchronous Code Division Multiple Access (TD-SCDMA) coverage, it may be beneficial for a multimode User Equipment (UE) to handover to a GSM network, a WCDMA network, a CDMA 1x RTT network, or an LTE network. When multiple networks are available to the UE and a poor signal quality is detected in the TD-SCDMA network, one of the available networks may be selected for inter-RAT handover based on a service type of the active call on the UE. For example, when a circuit-switched call, such as a voice call, is in progress on the UE, an inter-RAT handover to a GSM network occurs. In another example, when a packet-switched call, such as a data call, is in progress on the UE, an inter-RAT handover to a WCDMA network occurs. Selecting a network for inter-RAT handover based on an active call service type improves the service provided to the UE.
Abstract:
Methods and apparatuses are provided that pausing transmission control protocol (TCP) transmissions during or following handover to prevent unwarranted duplicated acknowledgement transmission, which can cause decrease in TCP window size. During handover, transmission on-hold commands can be sent to a TCP layer that indicate to prepare to pause TCP transmissions, immediately pause TCP transmissions, and/or the like. Transmission resume commands can be sent to the TCP layer following handover. In addition, TCP transmissions can be paused following handover to allow data forwarding data to be provisioned to a device from a target base station without duplicated acknowledgement transmission.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE. The UE may detect a multicast/broadcast radio link failure based on at least one of decoding errors, lost or error packets/segments, or failure to receive a multicast/broadcast channel for a time period greater than a threshold, and recover from the detected multicast/broadcast radio link failure upon detecting the multicast/broadcast radio link failure.
Abstract:
Methods and apparatus for autonomous handover between WiMAX (Worldwide Interoperability for Microwave Access) and CDMA (Code Division Multiple Access) EVDO (Evolution-Data Optimized) or 1×RTT (one times Radio Transmission Technology, or 1×) networks during normal operation of a dual-mode mobile station (MS) are provided. The methods and apparatus may improve service continuity during handover and need not require any changes to the WiMAX or CDMA standards.
Abstract:
A multimode wireless access terminal is configured to operate in idle mode while registered with a plurality of radio access technologies, for example, a TD-SCDMA network and a WCDMA network, and monitor paging messages, with a reduced likelihood of paging conflicts and missed calls. If the paging conflict is seen at a particular cell, then a cell reselection to another cell may be utilized to change the cell and avoid the conflict. Because the probability of a paging conflict is small due to the short duration of paging indicator messages, the access terminal may have very infrequent paging indicator monitoring conflicts, and when conflicts actually do occur, it is very likely that the UE will find a neighbor cell without conflict.
Abstract:
A user equipment may save power by reducing certain battery draining activities when the battery power remaining in the UE fails to meet a threshold value. The UE may skip inter-radio access technology measurements to conserve battery life when the battery power in the UE fails to meet the threshold. The UE may also extend inter-radio access technology measurement periodicity when the battery power in the UE fails to meet the threshold.
Abstract:
Certain embodiments of the present disclosure provide techniques for a multi-mode mobile station to establish paging intervals in different radio access technology (RAT) networks that do not collide.