Abstract: A method and apparatus for determining available downlink bandwidth are described. The described aspects may include estimating an available link capacity of a cell for a user equipment. The described aspects may include estimating an available fraction of cell resources for the user equipment. The described aspects may include estimating available bandwidth of the cell for the user equipment as a function of the estimated available link capacity and the estimated available fraction of cell resources. Available bandwidth may be estimated for a cell in a Universal Mobile Telecommunications System (UMTS) system when the user equipment is in an idle mode and/or a connected mode. Available bandwidth may be estimated for a cell in a Long Term Evolution (LTE) system when the user equipment is in an idle mode and/or a connected mode.

Abstract: Apparatus and methods of controlling call establishment are described. A user equipment (UE) may determine to establish a call. In an aspect, the UE may detect a Wireless Local Area Network (WLAN) access node and receive, from a Wireless Wide Area Network (WWAN) access node, WWAN load-related information. Based on UE call establishment rules and the WWAN load-related information, the UE may determine whether to establish the call on the WWAN access node or the WLAN access node. In another aspect, the UE may determine WLAN access node characteristics associated with a received signal from a WLAN access node. The UE may forward a call establishment request, including the WLAN access node characteristics to a WWAN access node. The UE may receive a redirection command to redirect the call establishment request to the WLAN access node.

Abstract: A method of random access in wireless communications that includes transmitting a radio resource control (RRC) connection request message, receiving an RRC connection setup message, and transmitting a modified RRC connection setup complete message that does not include at least a portion of a user equipment (UE) capability.

Abstract: Systems and methodologies are described that facilitate providing uplink inter-cell interference cancellation. A radio network controller can receive measurement reports in order to identify non-serving nodes that are receiving interference from user equipment. Based on evaluation of such measurement reports, an interference message can be communicated to a Node B, wherein such measurement report can include information that allows the Node B to cancel or terminate the interference caused by such identified user equipment.

Abstract: The present disclosure presents a method and apparatus for improving demodulation reliability of an uplink (UL) high speed dedicated physical control channel (HS-DPCCH) at a base station. For example, the disclosure presents a method for receiving a secondary pilot channel from a user equipment (UE) on an uplink (UL) and demodulating the HS-DPCCH using at least the secondary pilot channel. As such, improved demodulation reliability of an uplink (UL) high speed dedicated physical control channel (HS-DPCCH) at a base station may be achieved.

Abstract: Systems and methods for packet acknowledgement are disclosed. In one embodiment, codewords are redundantly used in order to decrease the total number of bits required for feeding back acknowledgment information or in order to increase the Euclidean space between codewords.

Abstract: A method, apparatus, computer program product, and processing system provide for dynamic selection of a secondary serving cell among various available secondary serving cells, be they in the same frequency as the primary serving cell (as in SFDC-HSDPA), in a different frequency but in the same band as the primary serving cell (as in DC-HSDPA), or in a different band from the primary serving cell (as in DB-DC-HSDPA). Here, the UE may be preconfigured for each of the available secondary serving cells, and may receive a configuration message to select between one of them based on factors such UE battery consumption, CQIs corresponding to the available secondary serving cells, loading of the secondary serving cells, or UE power headroom limitations. Thus, an advanced UE capable of receiving the plurality of technologies may benefit from dynamically selecting the best available secondary serving cell in accordance with the factors.

Abstract: Aspects described herein relate to selecting a rank for wireless communications using multiple transmit antenna layers. A first effective throughput achievable using a first rank and based at least in part on a first block error rate (BLER) associated with the first rank can be estimated along with a second effective throughput achievable using a second rank and based at least in part on a second BLER associated with the second rank. The first rank or second rank is selected to be used for transmitting communications over multiple transmit antenna layers based at least in part on comparing the first effective throughput to the second effective throughput, and the selection can be indicated to a transmitting entity from which the communications over the multiple transmit antenna layers are received.

Abstract: Aspects for balancing power output on the plurality of antennas for the transmission of a transport block are disclosed. In accordance with the present disclosure, a transmitter may balance the power output on a plurality of transmit antennas in a multiple-input multiple-output (MIMO) system by having a precoded data block bypass a virtual antenna mapping of the overhead channels (e.g., control channels). Additionally or alternatively, the transmitter may balance the power output on the plurality of transmit antennas by applying an inverse mapping parameter during the precoding process to the transport block to generate a plurality of inverse mapped precoded data blocks. In some examples, the inverse mapping parameter may be an inverse of the mapping parameter. Thus, in accordance with the present disclosure, precoding a transport block may include selecting a precoding weight for each of the plurality of antennas from an unrestricted precoding weight set.

Abstract: Techniques of frequency spectrum usage in a wireless communication system include configuring two or more downlink carriers, each having a downlink carrier center frequency, to have a total occupied bandwidth that is constrained within an allocated downlink frequency spectrum. Further, the techniques include transmitting, to a user equipment (UE), two or more downlink carrier center frequency indicators that each identify a downlink carrier center frequency of each of the two or more downlink carriers. Also, the present techniques may include transmitting, to the UE, at least one uplink carrier center frequency indicator that at least relatively identifies at least one uplink carrier center frequency of at least one uplink carrier that is configured to have an independent, variable offset relative to one or more of the more than two downlink carriers. As such, these aspects allow new ways of squeezing carriers into the downlink while not impacting UE transmitter complexity.

Abstract: A base station receiver, a computer program product operable at a base station, and a method operable at a base station receiver, for receiving uplink transmit diversity transmissions utilizing a master/slave scheme at the receiver. One or more tracking loops, such as a searcher task, a time tracking loop, or a frequency tracking loop may be implemented at the base station receiver to determine compensation values, such as finger timings for a rake receiver or frequency compensation values, in accordance with characteristics of a first received pilot channel transmitted utilizing a first precoding weight vector. Here, corresponding compensation values may be derived for the reception of a secondary pilot channel transmitted utilizing an precoding weight vector orthogonal to the first precoding weight vector, simply based on those determined for the first pilot channel.

Abstract: The present disclosure presents a method and an apparatus for reducing battery consumption at a user equipment (UE). For example, the method may include configuring a 10 ms transmission mode on an uplink (UL) channel at the UE, indicating configuration of the 10 ms transmission mode to a base station in communication with the UE, compressing a 20 ms transmission associated with a 20 ms transmission time interval (TTI) into a 10 ms compressed transmission, transmitting the 10 ms compressed transmission during a first 10 ms of the 20 ms TTI, and performing a discontinuous transmission (DTX) of the UL channel during a second 10 ms of the 20 ms TTI. As such, reduced battery consumption at a UE may be achieved.

Abstract: Disclosed are apparatus and method for time division multiplexing of a dedicated channel. In one aspect, the apparatus and method are configured to assign a common spreading code to two or more User Equipments (UEs); encode a downlink (DL) dedicated channel (DCH) with the common spreading code; time-division multiplex a Dedicated Physical Data Channel (DPDCH) data for each of the two or more UEs on the encoded DL DCH; and transmit the multiplexed data on the DL DCH to the UEs.

Abstract: Methods and apparatus for power management comprise detecting, at a user equipment (UE), a state transition trigger, wherein the state transition trigger indicates a current data transmission termination or an anticipated data transmission termination. Further, the methods and apparatus comprise sending a state transition indication to the network entity in response to detecting the state transition trigger. Moreover, the methods and apparatus comprise adjusting a state of the UE based at least in part on sending the state transition indication to the network entity.

Abstract: A method for reducing energy consumption of a base station is described. A first pilot channel is transmitted via a first antenna using a first downlink power amplifier. A second pilot channel is transmitted via a second antenna using a second downlink power amplifier. It is determined that no multiple-input and multiple-output users are in a cell corresponding to the base station. The second pilot channel is shut off.

Abstract: The disclosure provides for a compressed mode transmission gap in wireless communications. A user equipment (UE) may receiving a downlink dedicated physical channel (DPCH) having a slot-format and a spreading factor during a first compression interval. The downlink DPCH may not include a compressed-mode transmission gap during the first compression interval. The UE may receive the downlink DPCH having the same slot-format and the same spreading factor during a second compression interval. The UE may determine that the downlink DPCH includes a compressed-mode transmission gap during the second compression interval. A set of slots of the downlink DPCH during the transmission gap may be punctured. The UE may decode the downlink DPCH for the second compression interval based on a set of remaining slots received during the second compression interval. In an aspect, the UE may estimate a SIR based on a TPC command in a last slot of the transmission gap.

Abstract: The disclosure provides for reducing uplink control channel overhead at a user equipment (UE). The UE may determine that a total transmit power of the UE exceeds an allocated power. The UE may then scale a transmit power of a high-speed dedicated physical control channel (HS-DPCCH) relative to a dedicated physical control channel (DPCCH) in response to the determination that the UE is power limited. The UE may scale the transmit power of the HS-DPCCH when there is no downlink activity as determined, for example, by expiration of a timer. In an aspect, the UE may transmit an indication that the UE is power limited, for example, by using a most-significant bit of a transport format combination index. In another aspect, the UE may receive an indication that a downlink transmission is imminent and, in response, the UE may transmit the HS-DPCCH without scaling its corresponding transmit power.

Abstract: The present disclosure presents aspects for performing continuous packet connectivity (CPC) with dedicated channel (DCH) enhancements at a user equipment (UE). For example, the aspects may include identifying whether DTX is allowed in association with the CPC at the UE during a time period, determining whether DTX is allowed in association with the DCH enhancements at the UE during the time period, and performing DTX at the UE during the time period when both the CPC and the DCH enhancements allow for DTX. As such, CPC with DCH enhancements at a UE may be performed.

Abstract: A method that includes determining a multi-flow configuration for a multi-flow communication of a user equipment (UE), wherein the multi-flow configuration identifies whether a multi-frequency configuration is utilized and whether multiple-input multiple-output (MIMO) communication is configured for at least one cell in the multi-flow communication, determining one or more cell groups based on the multi-flow configuration, and determining at least one of a channel quality indicator (CQI) repetition rule or a hybrid automatic repeat request acknowledgment (HARQ-ACK) repetition rule for the multi-flow communication based on one or more of the multi-flow configuration or the one or more cell groups.

Abstract: A method operable at a user equipment configured for wireless communication over a dual-frequency, dual-cell network is disclosed includes a primary carrier and a secondary carrier. The method includes maintaining an active set corresponding to the primary carrier; maintaining a virtual active set corresponding to the secondary carrier; and transmitting a control signal including a virtual mobility event corresponding to a change in the virtual active set. An apparatus for performing the method is also disclosed.