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 |
20090034474 | Method and apparatus for dynamic adjustment of uplink transmission time - Systems and methods for dynamically adjusting the transmission time interval (TTI) for a communications system are presented. The described aspects provide for dynamically adjusting the TTI in a communication session between a base station or nodeB and a wireless device or user equipment between a shorter TTI, which can provide increased data throughput and lower power consumption, and a longer TTI, which can provide more rugged communication link connections. By dynamically adjusting the TTI, the communications link can be optimized for the given communication channel conditions. Determinations, based on indicia related to the communications system conditions, can be employed in dynamic TTI adjustment. These determinations can be formed centrally at the Radio Network Controller (RNC), at the RNC supplemented with user equipment (UE) available information, or formed in a distributed manner between the RNC and UE across a communications system. | 02-05-2009 |
20090129375 | Method and Apparatus for Transmission of Circuit Switched Voice Over Packet Switched Networks - Systems and methodologies are described that facilitate and/or effectuate transmission of circuit switched voice over packet switched networks. The systems and methodologies provide for the receiving a first packet originating from access terminals and/or user equipment, determining within which hybrid automatic repeat request (HARQ) the first packet is received, ascertaining an amount of delay that is applied to the first packet before the first packet is forwarded into a core circuit switched network; and establishing a periodic time interval within which to convey subsequent packets that originate from the communicating access terminal and/or user equipment. | 05-21-2009 |
20090185528 | SHARED RESOURCE ALLOCATION - A base station can employ a shared resource, such as a control channel, for communication with a mobile device. The mobile device can be granted the exclusive access to the shared resource for a limited time. The exclusive access can be such that there is not a limit in message size that can be transferred across the shared resource. To improve operation, the exclusive grant can be applied until it is determined that appropriate packets are transferred. | 07-23-2009 |
20090201871 | EFFICIENT UTILIZATION OF CHANNEL RESOURCES IN WIRELESS COMMUNICATION - Providing for improved wireless communications for user equipment (UE) in a semi-active state is described herein. By way of example, a base station can employ particular wireless channel resources, monitored by a UE in a CELL_FACH state for instance, to trigger channel feedback information from the UE. The trigger can comprise an explicit order instructing the UE to provide data in response, or can include a portion of downlink traffic targeting the UE, where the UE is configured to respond in a suitable manner to receipt of traffic data. The UE can maintain the CELL_FACH state in receiving to and responding to the trigger, and can further receive subsequent traffic data in such state. Accordingly, the subject disclosure provides for improved efficiency and reliability in semi-active state wireless communications. | 08-13-2009 |
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 |
20090213805 | METHOD AND APPARATUS FOR SUPPORTING DATA TRANSMISSION IN A MULTI-CARRIER COMMUNICATION SYSTEM - Techniques for supporting data transmission on multiple carriers in a wireless communication system are described. A user equipment (UE) may determine available transmit power for data transmission on multiple carriers. The UE may distribute the available transmit power to multiple carriers (e.g., using uniform power distribution, greedy filling, water filling, etc.) to obtain allocated transmit power for data for each carrier. The UE may send at least one resource request with information indicative of the allocated transmit power for each of the multiple carriers to a Node B. The UE may receive at least one resource grant with information indicative of granted transmit power for each of at least one carrier, which may be all or a subset of the multiple carriers. The UE may send data on the at least one carrier and may limit its transmit power for each carrier to the granted transmit power for that carrier. | 08-27-2009 |
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 |
20090274048 | Methods and Apparatus for Dynamic Load Balancing With E-AICH - Systems and methodologies are described that facilitate dynamic load balancing in a communications network. In particular, one or more mobile devices can send random access preambles on an uplink frequency paired to a downlink frequency employed to connect the one or more mobile devices to a base station. The base station can determine if an uplink frequency load imbalance exists based upon the random access preambles. The base station can transmit an indicator on an acquisition indicator channel to at least one mobile device wherein the indicator includes a command to transition to a new uplink frequency. The mobile device can switch uplink frequencies in response to the command. | 11-05-2009 |
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 |
20100202343 | Relays in a Multihop Heterogeneous UMTS Wireless Communication System - Aspects relate to a Remote NodeB Relay that appears similar to a NodeB, a Radio Network Controller (RNC), and served mobile devices. Also provided is a Super-Light Router Relay that can provide better performance and QoS to served mobile devices while mitigating modifications to mobile devices, NodeBs, or interfaces between RNC and intermediary NodeBs. Aspects also relate to an Internet Protocol (IP) Relay that requires few, if any, modifications to mobile devices, NodeBs, or interfaces between RNC and intermediary NodeBs. Further, changes to an RNC and/or a core network can be mitigated though utilization of a strategic Relay Gateway. | 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 |
20100238857 | CARRIER TIMING FOR WIRELESS COMMUNICATIONS SYSTEMS - 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. | 09-23-2010 |
20100260121 | Discontinuous Uplink Transmission Operation and Interference Avoidance For a Multi-Carrier System - Systems, methods, devices, and computer program products are described for discontinuous multi-carrier uplink management in a wireless communication system. Common timing parameters may be identified for use in relation to discontinuous uplink transmissions on each of a two or more wireless carriers concurrently transmitting from an access terminal. A first operational state is associated with a first wireless carrier, while a second, different state is associated with a second wireless carrier. The first carrier may be operated in the first operational state concurrently with the second carrier being operated in the second operational state, with each carrier operated in accordance with the common timing parameters. | 10-14-2010 |
20110019625 | METHOD AND APPARATUS FOR SCHEDULING DATA TRANSMISSION ON MULTIPLE CARRIERS - Techniques for scheduling data transmission on multiple carriers in a wireless communication system are described. In one design, a scheduler may receive requested power headrooms for multiple carriers from a user equipment (UE), one requested power headroom for each carrier. Each requested power headroom may be indicative of transmit power usable by the UE for transmission on an associated carrier. The scheduler may also receive queue information indicative of data to transmit by the UE. The scheduler may redistribute the requested power headrooms across the multiple carriers (e.g., based on water filling or greedy filling) to obtain redistributed power headrooms for the multiple carriers. The scheduler may schedule the UE for data transmission on the uplink based on the redistributed power headrooms and the queue information. The scheduler may obtain and send at least one granted power headroom for at least one carrier to the UE. | 01-27-2011 |
20110093610 | Methods and Apparatus for Obtaining Content With Reduced Access Times - A method and apparatus for obtaining content with reduces round trip times is provided. The method may comprise transmitting, from a device, a primary content item request to a proxy server to obtain a primary content item using a first protocol, receiving the primary content item from the remote proxy using the first protocol, generating one or more secondary content item requests for one or more secondary content items associated with the primary content item, transmitting the one or more secondary content item requests to the proxy server using a second protocol, wherein the second protocol decouples the one or more secondary content item requests from an acknowledgement of receipt of the one or more secondary content item requests, and receiving at least one of the one or more secondary content items from the proxy server using the second protocol. | 04-21-2011 |
20130303222 | CONNECTED-STATE RADIO SESSION TRANSFER IN WIRELESS COMMUNICATION SYSTEMS - Embodiments described herein relate to connected-state radio session transfer in wireless communications. A target access network controller may create a radio session associated with an access terminal, the radio session corresponding with a source radio session at a source access network controller. The target access network controller may also establish a communication route between a data network and the access terminal via the target access network controller. The target access network controller may further receive a frozen state associated with the source radio session from the source access network controller. In an aspect, the frozen state may include a snapshot of any data being communicated through the source radio session when freezing occurred. The target access network controller may subsequently unfreeze the received state. | 11-14-2013 |
20140321286 | METHOD AND APPARATUS FOR DYNAMIC ADJUSTMENT OF UPLINK TRANSMISSION TIME - Systems and methods for dynamically adjusting the transmission time interval (TTI) for a communications system are presented. The described aspects provide for dynamically adjusting the TTI in a communication session between a base station or nodeB and a wireless device or user equipment between a shorter TTI, which can provide increased data throughput and lower power consumption, and a longer TTI, which can provide more rugged communication link connections. By dynamically adjusting the TTI, the communications link can be optimized for the given communication channel conditions. Determinations, based on indicia related to the communications system conditions, can be employed in dynamic TTI adjustment. These determinations can be formed centrally at the Radio Network Controller (RNC), at the RNC supplemented with user equipment (UE) available information, or formed in a distributed manner between the RNC and UE across a communications system. | 10-30-2014 |
20140321440 | METHOD AND APPARATUS FOR DYNAMIC ADJUSTMENT OF UPLINK TRANSMISSION TIME - Systems and methods for dynamically adjusting the transmission time interval (TTI) for a communications system are presented. The described aspects provide for dynamically adjusting the TTI in a communication session between a base station or nodeB and a wireless device or user equipment between a shorter TTI, which can provide increased data throughput and lower power consumption, and a longer TTI, which can provide more rugged communication link connections. By dynamically adjusting the TTI, the communications link can be optimized for the given communication channel conditions. Determinations, based on indicia related to the communications system conditions, can be employed in dynamic TTI adjustment. These determinations can be formed centrally at the Radio Network Controller (RNC), at the RNC supplemented with user equipment (UE) available information, or formed in a distributed manner between the RNC and UE across a communications system. | 10-30-2014 |