Abstract: Systems and methods for communicating over multiple carriers are described herein. A predetermined event triggers the generation of scheduling information for two or more of the carriers. The predetermined event may comprise expiration of a timer set for at least one of the two or more carriers, storing data in a buffer having a higher transmission priority than data previously stored in the buffer, or changing at least one of the two or more carriers from being served by a first cell to being served by a second cell.

Abstract: The present patent application discloses a method and apparatus for activating or de-activating a secondary carrier, comprising informing a serving radio network controller when a secondary carrier was activated or de-activated, receiving a confirmation from the serving radio network controller that non-serving NodeB cells have achieved synchronization, and scheduling a UE upon receiving confirmation. In another example, the present patent application discloses a method and apparatus for de-activating a secondary carrier, comprising controlling de-activation of the secondary carrier using high-speed shared control channel orders, receiving acknowledgement of said high-speed shared control channel orders, and informing a serving radio network controller when the secondary carrier was de-activated.

Abstract: A method and apparatus for wireless communication may provide a multi-link PDCP sublayer in a radio network controller capable of allocating PDCP PDUs among a plurality of RLC entities for use in a multi-point HSDPA network. Some aspects of the disclosure address issues relating to out-of-order delivery of the PDCP PDUs to a UE, such as unnecessary retransmissions. That is, the disclosed multi-link PDCP may be capable of distinguishing between sequence number gaps that are caused by physical layer transmission failures and those caused merely by skew.

Abstract: A method and apparatus for wireless communication may provide for mobility in a Multi-Point HSDPA network capable of downlink aggregation. Some aspects of the disclosure provide modified mobility events utilized for altering the Active Set for a UE. Here, the addition of a cell to the Active Set can coincide with making that cell a secondary serving cell. Further, the deletion of a secondary serving cell from the Active Set can coincide with switching off the Multi-Point HSDPA mode. Still further, a modified mobility event for an HSDPA serving cell change can be utilized to swap a primary serving cell and a secondary serving cell.

Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be configured to link user equipment contexts associated with same physical device. A network entity may determine a link between a first context and a second context of a user equipment, and may combine procedures related to the first and the second contexts when the first context and the second context are linked. The first context and the second context may be associated with a common international mobile equipment identity of the UE and different international mobile subscriber identities. A wireless device may maintain a first wireless communications link corresponding to a first subscription and a second wireless communications link corresponding to a second subscription. The wireless device may refrain from performing a first radio resource procedure in relation to the first subscription after performing a similar radio resource procedure in relation to the second subscription.

Abstract: Synchronization of uplink carriers for transmission is disclosed in accordance with different aspects. The uplink carriers that transmit information are configured such that at least one of the uplink carriers is an anchor carrier. When a plurality of carriers are thus configured for the uplink, they are synchronized such that they bear a predetermined phase relationship with each other. The predetermined phase relationship between the plurality of carriers depends on the transmit timing of the anchor carrier or a combination of transmit timings of the anchor carrier and one or more non-anchor carriers comprised within the uplink carriers.

Abstract: A method of wireless communication in a dual subscriber identification module (SIM) terminal includes transmitting a first synchronization message from a first module associated with a first SIM. The method also includes receiving a first acknowledgment (ACK) message on a fast physical access channel (FPACH) in response to the first synchronization message. The method further includes sharing timing information included in the first ACK between the first module and a second module.

Abstract: A method and apparatus for wireless communication may provide an RLC reset procedure tailored for a multipoint HSDPA system utilizing a plurality of disparate Node Bs to provide an RLC flow from an RNC to a UE. Some aspects of the disclosure provide for a flush request to be provided to each of a plurality of Node Bs utilized as serving cells in the multipoint HSDPA system, so that stale packets are not retained in internal buffers at the Node Bs following the RLC reset procedure. In some examples, the RLC reset procedure is only completed after confirmation that the flush of the internal buffers has been completed. Confirmation may be explicitly provided by each Node B utilizing a backhaul interface, or may be implicitly determined utilizing timers or signaling between the respective Node Bs.

Abstract: A method and apparatus for wireless communication may provide a multi-link RLC sublayer in an RNC capable of allocating RLC PDUs among a plurality of MAC entities for use in a Multi-Point HSDPA network. Some aspects of the disclosure address issues relating to out-of-order delivery of the RLC PDUs to a UE, such as unnecessary retransmissions. That is, the disclosed multi-link RLC may be capable of distinguishing between sequence number gaps that are caused by physical layer transmission failures and those caused merely by skew.

Abstract: A method and apparatus for enhancing uplink operations in a CDMA system is provided. The method may include receiving a rate control value and a transmit power value from a node B, wherein the rate control value is determined through uplink scheduling by the node B, and wherein the transmit power value is selected by the node B to maintain a signal to interference plus noise (SINR) metric within a threshold for a pilot channel, transmitting control channel information at a first power level determined from the transmit power value, and using a first average power tracking unit to generate the first selected transmit power and transmitting data channel information at a second power level determined from both the rate control value and the transmit power value.

Abstract: Apparatus and methods of scheduling one or multiple streams for a user equipment (UE) include receiving a single happy bit for the one or multiple streams, determining a set of scheduling grants for a UE configured to transmit over the one or multiple streams, and transmitting the scheduling grant to the UE.

Abstract: Systems and methodologies are described that facilitate split a common total power resource among a plurality of carriers. A power distribution scheme can be employed jointly across the plurality of carriers to determine an amount of power to allocate to respective carriers. Based upon an amount of power allocated, a packet format can be selected for each carrier based upon the amount of power allocated to the carrier and/or a serving grant associated with the carrier.

Abstract: A wireless communication system transmits in a High Speed Downlink Packet Access (HSDPA) by having a Radio Network Controller (RNC) assign portions of data to a first serving cell and a second serving cell for transmitting to a user equipment. The first serving cell transmits data on a first downlink carrier to the user equipment. The second serving cell, which is independent from the first serving cell, transmits data on a second downlink carrier to the user equipment. In an optional aspect, the RNC receives a measurement report from the user equipment on a first uplink carrier via at least one of the first serving cell and the second serving cell.

Abstract: A mobile wireless device may dynamically alter a downlink MIMO function by switching it on and off, or switching between different downlink MIMO configurations, such as 2×MIMO and 4×MIMO. Still further, a mobile device having greater than two antennas may dynamically select a subset of the antennas to be used to receive a MIMO transmission, and further, enable a mobile device to request a subset of antennas at a base station to be used for the MIMO transmission. This dynamic control of the MIMO mode or configuration may be achieved by using implicit signaling, by way of an enlarged code word set in CQI feedback transmissions, or by using explicit signaling, by way of E-DPCCH orders. In this way, a MIMO-capable mobile device may dynamically be configured for downlink MIMO transmissions as the conditions demand, enabling MIMO to be switched off when its use might otherwise cause performance to suffer.

Abstract: Various processing options and systems are provided for setting/controlling feedback indicators referred to as “Happy Bits” in a wireless communication network using multiple uplink carriers. In one aspect, a Happy Bit is determined independently for each one of a plurality of uplink carriers based on channel conditions and buffer lengths for the respective carrier. For example, if a UE is transmitting the maximum data allowed by its serving grant for that carrier, the UE has available power to increase the data rate on that carrier, and the TEBS delay is greater than a certain threshold, then the Happy Bit for that carrier may be set to Unhappy to inform the Node B that the UE is capable of transmitting at a higher data rate on that carrier.

Abstract: An apparatus and a method are disclosed for jointly selecting precoding matrices for a plurality of received transmissions, such as those that might be received from a primary serving cell and a secondary serving cell in a multi-flow radio access network wherein each of the serving cells is configured to provide a MIMO transmission. Here, by jointly selecting the precoding matrices, interference from each of the downlink transmissions upon the other transmission can be reduced, thus improving overall performance at the receiving entity.

Abstract: The present disclosure provides methods and apparatuses for improved UE communication mode determination by a network entity, such as a radio network controller, where multi-cell and multi-carrier communication is available to the UE in a wireless network. For example, in an aspect, methods and apparatuses are provided for determining whether a user equipment (UE) is in a soft handover region and a softer handover region, and where the UE is in such a region, predicting a future multi-cell performance of the UE assuming the UE will be served by a plurality of cells on a single carrier, predicting a future multi-carrier performance of the UE assuming the UE will be served by a plurality of carriers of a single cell, comparing the future multi-cell performance to the future multi-carrier performance, and transmitting a mode command to the UE based at least on the comparing.

Abstract: Providing for fast allocation of additional carriers in multi-carrier wireless communication systems is described herein. By way of example, high layer protocols can be employed to allocate additional carriers to UEs in a wireless network. Additionally, management of the additional carriers can be accomplished via high speed lower layer signaling protocols. Management can involve activating/deactivating the additional carriers, instructing the UE to provide carrier feedback, monitor pilot or control channels of such carriers, or the like. Because lower layer signaling is relatively fast, activation or deactivation of the additional carrier can be quickly implemented in response to contemporaneous changes in channel conditions. Thus, changes to signal quality or network loading can be determined and utilized to customize carrier activation in near real-time, providing efficient resource allocation while conserving UE battery life.

Abstract: Techniques for scheduling users for transmission on the uplink in a wireless communication system are described. A cell may perform interference cancellation for uplink transmissions and may observe lower effective noise and interference due to interference cancellation. The lower effective noise and interference may allow the cell to operate with a higher effective target load, which may support a higher overall throughput for the cell. In one design, an effective target load for a cell using interference cancellation may be determined, e.g., based on a target rise-over-thermal (RoT) for the cell and an interference cancellation efficiency factor. An available load for the cell may be determined based on the effective target load, which may be higher than a target load for the cell without interference cancellation. Users in the cell may then be scheduled for transmission on the uplink based on the available load.

Abstract: A method of wireless communication in a dual subscriber identification module (SIM) terminal includes transmitting a first synchronization message from a first module associated with a first SIM. The method also includes receiving a first acknowledgment (ACK) message on a fast physical access channel (FPACH) in response to the first synchronization message. The method further includes sharing timing information included in the first ACK between the first module and a second module.