Abstract:
Embodiments of the present disclosure propose a method for addressing MAC protocol data units which include MOB_PAG-ADV messages in an attempt to improve the success rate of decoding BS broadcast paging messages. For example, certain embodiments propose parsing and continuing to decode MPDUs with MOB_PAG-ADV messages although the corresponding CRC failed.
Abstract:
Avoidance of uplink synchronization oscillation in TD-SCDMA systems begins when a user equipment receives a downlink SS command from a Node B. The user equipment obtains a previous uplink timing, which may be from a previous sub-frame associated with the downlink SS command. The user equipment would obtain this previous sub-frame associated with the SS command directly from the Node B as an identification of the Node B's sub-frame delay. The user equipment will then calculate the uplink timing for its next updated uplink signal by combining the previous uplink timing with the synchronization adjustment associated with the SS command. The user equipment then transmits its next uplink signal using the new uplink timing.
Abstract:
A method and apparatus for adjusting and offsetting a power level of uplink transmissions from user equipment in a wireless communication system. In an aspect of the disclosure, a handoff from a source base station to a target base station includes the target base station determining a suitable power offset value and communicating this offset to the source base station. The source base station transmits a handover instruction including the offset to the user equipment (UE), and the UE transmits a synchronization code. The target base station then calculates a further power correction and transmits the correction with an acknowledgment of the synchronization code. The UE then sets the power for future transmissions based in part on the offset and correction values.
Abstract:
In a mobile device for wireless communication capable of communicating on multiple radio access technologies (RATs), cell selection may be improved by reusing cell measurements for inter-RAT cell selection. This will reduce the number of cell measurements taken and improve mobile device performance. A time threshold may be used to instigate new cell measurement to prevent cell measurement data from being outdated.
Abstract:
Transfer of Multimedia Broadcast/Multicast Services (MBMS) over a Single Frequency Network (MBSFN) service and idle mode unicast service for a mobile entity from a source base station to a target base station may be managed by a base station or mobile entity of a cellular wireless communications system (WCS). Operations related to the transfer may include obtaining an MBMS status of the mobile entity, and/or obtaining MBMS support information for the base station. A network entity may facilitate MBMS discovery by a mobile entity, by transmitting a data element to the mobile entity including service identifiers mapped to corresponding cell identifiers to indicate respective MBMS services to be broadcast in an WCS area on adjacent cells identified by respective ones of the cell identifiers. The MBMS services may be broadcast within the WCS area using the adjacent cells previously indicated in the data element.
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 in an effort to avoid consecutive collisions between paging intervals of a first and a second network.
Abstract:
Methods and systems or broadcasting the fast power control message in wireless communications systems are provided. In certain embodiments, the methods and systems can include receiving Carrier to Interference-plus-Noise Ratio (CINR) values from multiple mobile stations, determining a power adjustment value for each mobile station based on the CINR values, grouping the mobile stations based at least on the CINR values, and transmitting a fast power control message for each group with a different number of repetitions.
Abstract:
Certain aspects of the present disclosure propose techniques for enhancing a measurement gap for TD-SCDMA measurement. Certain aspects provide a method that generally includes receiving, from a base station (BS) of a first radio access technology (RAT), a message indicating a measurement gap in which a user equipment (UE) is to take a measurement in a second RAT, the message comprising an indication of a start position of the measurement gap and a duration of the measurement gap; and taking a measurement during the measurement gap.
Abstract:
Techniques for scheduling logical channels for data transmission are described. In one design, a user equipment (UE) is configured with a plurality of logical channels for sending data on the uplink. Each logical channel is associated with a priority and a data buffer size. The UE maintains a token bucket for each logical channel. In each scheduling interval or when an uplink grant is received, the UE determines a bucket level (which may be a positive value or a non-positive value) for each of the plurality of logical channels. The UE ascertains logical channels with bucket levels of the same polarity and then identifies logical channels of the same priority among all logical channels with the same bucket level polarity. The UE selects at least one identified logical channel for scheduling based on the data buffer size and/or the bucket level for each identified logical channel.
Abstract:
Methods and apparatus are provided for selecting identifying numbers associated with a mobile station (MS) having multiple subscriber identity modules (SIMs) such that the paging intervals for both identifying numbers are aligned. The MS having multiple SIMs may operate in a network via a particular radio access technology (RAT), such as Wideband Code Division Multiple Access (W-CDMA). By having aligned paging intervals, the MS may wake up only once during the paging cycles for the various identifying numbers rather than waking up multiple times, thereby reducing power consumption of the MS during idle mode compared to a conventional MS with multiple SIMs, and thus multiple identifying numbers.