| Patent application number | Description | Published |
|---|
| 20080225796 | HANDOVER IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate handing over mobile device communications in a wireless network from a source base station to a target base station without using a random access channel (RACH). In this regard, the mobile device can monitor multiple base stations determining timing information related thereto and access scheduling request channels for the base stations. When ready for handover, the mobile device can request data resources over the scheduling request channel using the appropriate timing information. | 09-18-2008 |
| 20080225824 | METHOD AND APPARATUS FOR POLLING IN A WIRELESS COMMUNICATION SYSTEM - A data packet communication system employs radio link control (RLC) transmission between a transmitter and a receiver with an Automatic Repeat Request (ARQ) arrangement whereby polling of the receiver is accomplished with reduced amount of redundantly transmitted data, such as between an access node and terminal. Upon a polling event, such as emptying of a transmission buffer of the transmitter, expiration of a polling timer, or reaching a radio link control (RLC) protocol data units (PDUs) count threshold, the transmitter sends a polling command to the receiver. This polling command is smaller than any of the RLC PDUs, which are conventionally resent with a polling bit set to evoke a STATUS PDU from the receiver. With evolving communication standards tending toward larger PDUs, such as in excess of a kilobyte for HSPA+ (High-Speed Packet Access Evolution) and | 09-18-2008 |
| 20080227449 | PICH-HS TIMING AND OPERATION - Systems and methodologies are described that facilitate employing a paging indicator channel in connection with high speed channels in a wireless communications network. A paging indicator transmission can be sent on the paging channel to one or more mobile devices. The paging indicator indicates that additional information such as a full paging messages, other control plane data or other user plane data is expected to be transmitted at a specific time instant (e.g., subframe) on the associated high speed channel. A set of parameters can be transmitted on common channels that specify a set of associated subframes in a high speed channel. Mobile devices can analyze the set of parameters to determine the associated subframes and receive the subframes in accordance with a schedule. | 09-18-2008 |
| 20080273537 | CIPHERING SEQUENCE NUMBER FOR AN ADJACENT LAYER PROTOCOL IN DATA PACKET COMMUNICATIONS - A data packet communication system employs data encryption in a packet data convergence protocol (PDCP) and radio link control (RLC) in Layer 2 of transmission between a transmitter (TX) and a receiver (RX). A single sequence number is used for both the PDCP and RLC to reduce overhead by signaling a TX PDCP first ciphering sequence number to the RX prior to encrypted data packet communication. A sequence number accompanies each RLC PDU, which can encompass concatenated or segmented service data units (SDUs) from the higher layer PDCP. This sequence number is sufficient for the RLC to perform re-ordering, gap detection, retransmission, etc., while also allowing the RX upper layer PDCP to reconstruct a sequenced value used to encrypt content. | 11-06-2008 |
| 20080310324 | ABORTING A PACKETIZED WIRELESS COMMUNICATION - Systems and methods are provided for a signaling an ongoing communication of a data unit in a data packet is to be aborted. Upon a determination to abort an ongoing communication is made, a code-point in a data unit header is utilized to indicate the ongoing communication is to be aborted. A first class of code-point is a dedicated, predefined abort data unit field header. A second class of code-point is a combination of a set of existing, predefined data unit header fields, at least one data unit header field in the combination holds a value that is either invalid or legitimate yet unlikely to occur. Conveying code-point(s) to indicate termination of an ongoing communication of a data unit in a data packet in a regular communication mitigates transmission disruption and saves channel capacity. | 12-18-2008 |
| 20090003282 | LEARNING-BASED SEMI-PERSISTENT SCHEDULING IN WIRELESS COMMUNICATIONS - Systems and methods are provided for a learning-based determination of semi-persistent scheduling of data-packet flow wireless communication. A packetized data flow served to a wireless terminal is fully scheduled for an initial period of time in order to collect statistics associated with scheduled packet sizes (Ss) and inter-packet times (Ts). Analysis of a cumulative distribution of {S, T} pairs indicate whether a characteristic packet size (S | 01-01-2009 |
| 20090046631 | TRANSPORT OF PDCP CONTROL PDUs WITHIN MAC FRAMES - Systems and methodologies are described that facilitate efficiently communicating a data packet related to a protocol layer within a wireless communication system. The systems and/or methods can provide cross-layer optimization by directly transporting or communicating data to a particular protocol layer. In general, a MAC header can include data that indicates a protocol layer to which such data is directed or targeted. The MAC header can allow a portion of data (e.g., PDUs, SDUs, etc.) to bypass at least one protocol layer above the MAC protocol layer for efficient and optimized processing of such data. | 02-19-2009 |
| 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 |
| 20090137265 | BASING NEIGHBOR LIST UPDATES ON A RADIO LINK FAILURE - Aspects relate to allowing a mobile device to discover missing neighbor cell relations when there is a radio link failure. At substantially the same time as connecting to a new cell that utilizes the same radio link technology, the failure is reported. If a connection is reestablished with a cell that utilizes a different radio link technology, the radio link failure information (and related missing neighbor information) is retained and reported later when a connection with a cell that utilizes the same radio link technology is established. | 05-28-2009 |
| 20090161545 | DOWNLINK FLOW CONTROL - Systems and methodologies are described that facilitate providing flow control feedback for controlling downlink data transmission rates. Various schemes can be utilized to send the flow control feedback from an access terminal to a base station. For example, a control PDU (e.g., MAC control PDU, PDCP control PDU) can be generated based upon a level of resource utilization of the access terminal, and sent to the base station for controlling the downlink data transmission rate. Following this example, a type of control PDU, a value included within the control PDU, etc. can be selected as a function of the level of resource utilization. By way of another illustration, a CQI report that includes a value selected as a function of the level of resource utilization associated with the access terminal can be generated and transmitted to the base station for controlling the downlink data transmission rate. | 06-25-2009 |
| 20090201884 | QUALITY OF SERVICE CONTINUITY - Systems and methodologies are described that facilitate supporting Quality of Service (QoS) continuity during an inter-base station mobility procedure. Layer 2 (L2) protocol configuration information for QoS (e.g., uplink, downlink, . . . ) and/or uplink QoS configuration information set by a source base station can be transmitted via an interface (e.g., X2 interface, . . . ) to a target base station during an inter-base station mobility procedure. Further, the target base station can select whether to reuse at least a portion of the L2 protocol configuration information for QoS and/or uplink QoS configuration information received from the source base station. Moreover, L2 protocol configuration information for QoS and/or uplink QoS configuration information not selected to be reused can be reconstructed. | 08-13-2009 |
| 20090238116 | METHOD AND APPARATUS FOR MEDIA ACCESS CONTROL -BASED FAST CELL SWITCHING FOR HIGH-SPEED PACKET ACCESS - Methods and apparatuses for facilitating switching HSPA (high speed packet access) serving cells from each of an RNC (radio network controller), base station, and access terminal are provided. The RNC pre-configures an access terminal and each base station in an active set for HS-DSCH operation by providing identification codes identifying each of the base stations. The RNC transmits data packets tagged with sequence numbers to each base station where they are synchronously buffered. The access terminal initiates a handover by transmitting a PDU (protocol data unit) to each of the base stations. The PDU is encoded with the identification code of a target base station and a sequence number of a subsequent packet. The target receives the PDU and directly completes the handover with the access terminal. | 09-24-2009 |
| 20100074193 | Reliable uplink resource request - Systems and methodologies are described that facilitate reliably requesting uplink resources in a wireless communications environment. In particular, mechanisms are provided for reliable uplink resource requests at instants when uplink resources are not retained. A mobile device transmits an uplink resource request on a feedback information channel conventionally utilized for channel quality indicators. The mobile device utilizes specific codewords reserved for uplink requests. In addition, a power spectral density of the feedback information channel is boosted to lower an error rate of the channel when reserved codewords are transmitted. | 03-25-2010 |
| 20100191878 | METHOD AND APPARATUS FOR ACCOMODATING A RECEIVER BUFFER TO PREVENT DATA OVERFLOW - Methods and apparatuses for preventing overflow at a receiver buffer are provided. Data packets of varying size are received into a receiver buffer and quantified by a byte counter to determine an amount of data in the receiver buffer at a given time. A data capacity status for the receiver buffer is then generated as a function of the amount of data in the receiver buffer. | 07-29-2010 |
| 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 |
