| Patent application number | Description | Published |
|---|
| 20080261599 | Fast Serving Cell Change - In a wireless communication system in which a user using a mobile equipment requests a serving cell handoff from a source cell to a target cell, the mobile equipment monitors authorization for the handoff from the target cell. At the same time, the mobile equipment can decode data from either the source cell or the target cell. Upon receipt of authorization for the handoff, the mobile equipment sends confirmation of the handoff to the target cell. | 10-23-2008 |
| 20090086672 | EQUIVALENT HOME ID FOR MOBILE COMMUNICATIONS - Facilitating user terminal (UT) access to wireless networks having disparate types of base stations (BSs) is described herein. By way of example, a distinct identifier (ID) can be reserved for a particular type of network access point (e.g. restricted or general access, full or fractional re-use, transmit power, cell size, etc.). The distinct ID can be broadcast by such access points, identifying the access point type. In some aspects, the distinct ID can be unicast to a terminal that is within a predetermined region of the network. Thus, at least within such region, the terminal can be directed to search for or handoff to a preferred type of access point (such as a home Node B). In such aspects, by providing regional-specific access, the subject disclosure can significantly reduce overhead signaling outside a home region where a home or preferred access point is expected to be found. | 04-02-2009 |
| 20090088131 | MOBILE ACCESS IN A DIVERSE ACCESS POINT NETWORK - Facilitating user terminal (UT) access to wireless networks having base stations (BSs) of disparate access types is described herein. In some aspects, BS parameterization is provided to facilitate search and/or access to distinct types of network BSs. For instance, parameters can modify a likelihood of identifying or remaining coupled to restricted access (RA) BSs in a home Node B (HNB) deployment. In other aspects of the subject disclosure, a PLMN ID reserved for HNBs is provided comprising multiple region IDs. Where a UT identifies a home region, HNBs can be given preference over macro BSs. Additionally, the UT can keep track of HNBs and HNB regions that reject access to the UT, and implement a delay time to mitigate rapid signaling to foreign HNBs in a dense HNB deployment. Accordingly, the subject disclosure provides for more efficient UT access in heterogeneous access type networks. | 04-02-2009 |
| 20090213729 | METHOD AND APPARATUS FOR LINK CONTROL IN A WIRELESS COMMUNICATION SYSTEM - Techniques for controlling transmission of packets on multiple links are described. In one design, a transmitter may generate packets of data for a receiver, assign the packets with sequence numbers from a single sequence number space, demultiplex the packets into multiple streams for multiple links, and send each stream of packets on the associated link to the receiver. The receiver may receive some packets in error, and the correctly received packets may be out of order. In one design, the receiver may maintain the largest sequence number of correctly received packets for each link. After detecting at least one missing packet, the receiver may send status information conveying the missing packet(s) and the largest sequence numbers for all links to the transmitter. The transmitter may use the largest sequence numbers for all links and its packet-to-link mapping to determine whether to quickly resend each missing packet or wait. | 08-27-2009 |
| 20090245178 | METHOD AND APPARATUS TO REPORT AND MANAGE CELLS IN A MULTI CARRIER SYSTEM - Methods and apparatuses for facilitating managing cells in a multi-carrier system from an access terminal and base station are provided. The base station and access terminal communicate via an anchor carrier and a supplementary carrier. A triggering algorithm generated by the base station is transmitted to the access terminal. The triggering algorithm includes instructions for the access terminal to report downlink measurements as a function of trigger events detected over the anchor carrier and/or the supplementary carrier. Downlink measurements taken by the access terminal are provided to the base station. Cell management instructions based in part on the downlink measurements are then provided to the access terminal by the base station. | 10-01-2009 |
| 20090245212 | REPORTING OF ACK AND CQI INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for reporting acknowledgement (ACK) information and channel quality indication (CQI) information in a wireless communication system are described. A user equipment (UE) may be able to receive data from up to two cells with dual-cell operation. The UE may determine CQI information for a first cell, determine CQI information for a second cell, and send the CQI information for both cells on a feedback channel with a single channelization code. The UE may process a control channel from each cell and, if control information is received from the cell, may further process a data channel from the cell to receive data sent to the UE. The UE may determine ACK information for each cell based on processing results for the data and control channels from that cell. The UE may send the ACK information for both cells on the feedback channel with the single channelization code. | 10-01-2009 |
| 20090257387 | FAST CARRIER ALLOCATION IN MULTI-CARRIER SYSTEMS - 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. | 10-15-2009 |
| 20090316575 | MANAGEMENT OF UE OPERATION IN A MULTI-CARRIER COMMUNICATION SYSTEM - Techniques for managing operation of a user equipment (UE) in a multi-carrier system are described. The system may support two or more carriers on the downlink and one or more carriers on the uplink. One carrier on each link may be designated as an anchor carrier. In an aspect, a lower layer order (e.g., an HS-SCCH order) may be used to transition the UE between single-carrier and multi-carrier operation. In another aspect, the UE may have the same discontinuous reception (DRX) configuration for all downlink carriers and/or the same discontinuous transmission (DTX) configuration for all uplink carriers. In yet another aspect, HS-SCCH-less operation may be restricted to the anchor carrier. | 12-24-2009 |
| 20100029274 | SYSTEM AND METHOD FOR CELL SEARCH AND SELECTION IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate improved cell search and selection in a wireless communication system. For example, a terminal as described herein can utilize one or more Closed Subscriber Group (CSG)-specific offset and/or hysteresis parameters as described herein to increase the amount of time on which the terminal is allowed to camp on a desirable cell. Additionally, specialized reselection timing can be employed as described herein to increase a delay associated with selecting a Home Node B (HNB) or Home Evolved Node B (HeNB) cell, thereby reducing power consumption associated with rapid cell reselection operations in a densely populated network environment. Further, a two-step reselection process can be performed as described herein in the context of selecting a frequency for cell reselection, thereby mitigating the effects of rapid reselection between cells and/or frequencies due to CSG cell prioritization. | 02-04-2010 |
| 20100035647 | AUTOMATED PARAMETER ADJUSTMENT TO COMPENSATE SELF ADJUSTING TRANSMIT POWER AND SENSITIVITY LEVEL AT THE NODE B - A small base node such as a Home Base Node (HNB), or femto cell, may reduce its transmit power in order to prevent co-channel or adjacent channel interference, or to limit its coverage area. Once the power is set, the HNB signal to a served Home User Equipment (HUE) its transmit Common Pilot Channel (CPICH) transmit power for accurate path loss estimation. When this power is outside of the permissible range, the HNB adjusts other parameters (such as Random Access Channel (RACH) constant value) to compensate for the error in signaled CPICH power, and thus compensate in that process the error in determining path loss. Similarly, if the uplink sensitivity is adjusted, to prevent interference, parameters would also be adjusted and signaled to the HUE to reflect the link imbalance. | 02-11-2010 |
| 20100069065 | NEIGHBOR CELL SEARCH ON A SECONDARY CARRIER - Systems and methodologies are described that facilitate providing frequent secondary carrier measurement reports in multicarrier wireless communications. Secondary carrier measurement reports can be provided based on anchor carrier measurement reports. When an event or request to generate an anchor carrier measurement report is received, the anchor carrier measurement report can be generated along with a secondary carrier measurement report. In this regard, access points can receive the carrier measurement reports and determine mobility for a wireless device based on more than one carrier. | 03-18-2010 |
| 20100144361 | Method and Apparatus for Hashing Over Multiple Frequency Bands in a Communication System - Method and apparatus for hashing mobile stations to frequencies in a communication system. The method uses two-level hashing to assign a mobile station first to a frequency band and then to a specific frequency within the frequency band. Embodiments allow for weights to be assigned to frequencies and mobiles hashed to the weighted frequencies. Weighting allows for a non-uniform distribution of mobile stations among frequencies to optimize system operating parameters. | 06-10-2010 |
| 20100165835 | METHOD AND APPARATUS FOR SYNCHRONIZATION DURING A HANDOVER FAILURE IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate synchronization of Node B-ordered parameters, such as discontinuous transmission (DTX)/discontinuous reception (DRX) status, following a handover failure and/or other suitable triggering events. As described herein, upon failure of a handover from a source Node B to a target Node B, a mobile device can return to the source Node B and synchronize with the source Node B with respect to DTX/DRX status and/or other Node B-ordered parameters. DTX/DRX synchronization can be performed by setting DTX/DRX status to a default state, a last DTX/DRX state utilized prior to initiation of the failed handover, or the like. Identification of the last DTX/DRX state can be conducted as described herein according to an analysis of respective orders communicated by the source Node B in relation to respective time intervals following initiation of the failed handover. | 07-01-2010 |
| 20100202392 | POWER ALLOCATION IN MULTI-CARRIER ENHANCED UPLINK - 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. | 08-12-2010 |
| 20100202393 | UPLINK CARRIER ALLOCATION - This innovation relates to systems and methods for multiple carrier allocation in wireless communication networks, and more particularly to allocation and/or de-allocation of one or multiple carriers on the uplink to a high-speed uplink packet access user. A radio network controller can allocate uplink carriers to users based on a plurality of criteria, including but not limited to network loading, channel conditions, and so forth. The allocation messages can be transmitted to the user via layer three messages or layer one signaling. | 08-12-2010 |
| 20100202394 | NON-SCHEDULED GRANTS IN MULTI-CARRIER ENHANCED UPLINK - Systems and methodologies are described that facilitate power distribution and data allocation in a multi-carrier wireless communication system. A portion of transmit power can be pre-allocated to an anchor carrier to support non-scheduled data flows. Remaining power is split among all carriers, including the anchor carrier, after pre-allocation. Data from one or more flows, scheduled and non-scheduled, are allocated to the carriers in accordance with priorities associated with the one or more flows. Allocation of data can be performed sequentially starting with a non-anchor carrier. In addition, non-scheduled data flows can be restricted to the anchor carrier. | 08-12-2010 |
| 20100203891 | METHOD AND APPARATUS FOR FACILITATING A HAND-IN OF USER EQUIPMENT TO FEMTO CELLS - Aspects are disclosed for facilitating a hand-in to a femto cell. An identifier is assigned to a femto cell in which the identifier is based on a scrambling parameter and a timing parameter. A relationship between the identifier and the femto cell is then communicated. In another embodiment, a user equipment report is received, which includes attributes related to a signal broadcast by a femto cell. An identifier associated with the femto cell is ascertained from an attribute included in the report. The femto cell is then identified based on the identifier. In a further embodiment, a timing parameter is received, and a scrambling parameter is set. A signal including the scrambling parameter is then broadcast according to an offset related to the timing parameter. In yet another embodiment, a femto cell is detected during an active call. An identifier associated with the femto cell is then ascertained and reported. | 08-12-2010 |
| 20100232356 | LAYER TWO SEGMENTATION TECHNIQUES FOR HIGH DATA RATE TRANSMISSIONS - A method, an apparatus, and a computer program product for wireless communication are provided to enable a reduction in processing power while handling high data rates. An apparatus includes a processing system configured to service a MAC PDU. Here, the MAC PDU includes a MAC header and at least one MAC SDU. The MAC header includes a transmission sequence number (TSN) having a length greater than 6 bits. Further, the processing system is configured to read the MAC header and to transport the MAC PDU in accordance with the MAC header between a MAC and a PHY utilizing one or more transport blocks over one or more transport channels. | 09-16-2010 |
| 20100238829 | APPARATUS AND METHOD FOR DUAL-CELL HIGH-SPEED UPLINK PACKET ACCESS - A method, an apparatus, and a computer program product for wireless communication are provided in which a plurality of uplink carriers are utilized in a cellular communications system. In an aspect of the disclosure, a wireless terminal configured for use in a cellular network transmits an uplink with a plurality of uplink carriers including an anchor carrier and a secondary carrier, and receives a downlink with a plurality of downlink carriers. Here, the wireless terminal provides feedback information, such as a channel quality indicator and an acknowledgment, corresponding to the plurality of downlink carriers, on an uplink channel on each of respective carriers in a subset of the plurality of uplink carriers. | 09-23-2010 |
| 20100238882 | Scheduling information for wireless communications - 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. | 09-23-2010 |
| 20100238986 | SYSTEM AND METHOD FOR EFFECTUATING A SIGNAL CARRIER CONFIGURATION - Systems and methods for effectuating a signal carrier configuration are disclosed. In one embodiment, the method comprises receiving an order, determining a signal carrier on which the order was received, determining a signal carrier configuration based at least in part on the order and the determined signal carrier, and changing the state of one or more signal carriers to effectuate the signal carrier configuration. | 09-23-2010 |
| 20100240311 | WIRELESS COMMUNICATIONS IN MULTI-CARRIER SYSTEMS - Systems and methods for communicating over multiple carriers are described herein. Information is communicated in a wireless system over an anchor carrier. An access terminal is provided to communicate over the anchor carrier in a non-compressed mode and concurrently and in parallel search for additional communication devices over another carrier. Further, the access terminal maintains an active set of communication devices to communicate with over the anchor carrier and the other carrier. | 09-23-2010 |
| 20100240396 | POSITION LOCATION USING MULTIPLE CARRIERS - A method of determining a distance estimate between a mobile device and a wireless transceiver communicating with the mobile device on at least one multi-carrier signal includes: receiving at least one multi-carrier signal; selecting at least one carrier signal from the at least one multi-carrier signal; measuring a signal characteristic of the at least one carrier signal from the at least one multi-carrier signal; and determining the distance estimate between the mobile device and the wireless transceiver based at least partially upon the signal characteristic. | 09-23-2010 |
| 20110026462 | Method and Apparatus For Packer Communications in Wireless Systems - Techniques for transmitting and receiving data in an efficient manner to potentially improve capacity for a wireless network and achieve power savings for a wireless device are described. The techniques utilize a Continuous Packet Connectivity (CPC) mode comprised of multiple (e.g., two) discontinuous transmission (DTX) modes and at least one (e.g., one) discontinuous reception (DRX) mode. Each DTX mode is associated with different enabled uplink subframes usable for transmission from the wireless device to the network. Each DRX mode is associated with different enabled downlink subframes usable by the network for transmission to the wireless device. The wireless device may send signaling and/or data on the enabled uplink subframes and may receive signaling and/or data on the enabled downlink subframes. The wireless device may power down during non-enabled subframes to conserve battery power. Mechanisms to quickly transition between the DTX and DRX modes are described. | 02-03-2011 |
| 20110038347 | SYSTEMS AND METHODS OF MAINTAINING CORE NETWORK STATUS DURING SERVING RADIO NETWORK SUBSYSTEM RELOCATION - A system and method enable wireless user equipment (UE) to undergo a serving radio network subsystem (SRNS) relocation to a radio network controller (RNC) that does not support a fast dormancy feature while maintaining synchronization with the packet-switched domain of the core network. The UE is made aware of whether the target RNC supports the fast dormancy feature by way of an indication provided to the UE in a reconfiguration message provided by the source RNC, that is, the RNC to which the UE was connected prior to the SRNS relocation. In this way, the UE can behave accordingly whether or not the target RNC supports the fast dormancy feature. | 02-17-2011 |
| 20110075742 | SYSTEMS AND METHODS FOR PROVIDING FEEDBACK IN AN ENHANCED UPLINK NETWORK - 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. | 03-31-2011 |
| 20110090806 | RADIO LINK CONTROL PROTOCOL DATA UNIT SIZE SELECTION IN DUAL CARRIER HSUPA - A method for using a flexible size radio link control (RLC) protocol data unit (PDU) on an uplink is described. A request for an RLC PDU is received from a medium access control (MAC) layer. Radio conditions for a first uplink carrier and a second uplink carrier are determined. A size of the RLC PDU is selected based on the radio conditions. The RLC PDU is generated. The RLC PDU is sent to the MAC layer. | 04-21-2011 |
