Patent application number | Description | Published |
20080225772 | EXPLICIT LAYER TWO SIGNALING FOR DISCONTINUOUS RECEPTION - The embodiments of the present invention provide for methods, devices, and systems adapted to enable an eNodeB to instruct a user equipment (UE) to adjust its current discontinuous reception (DRX) parameter by Layer 2 signaling, in particular, via Layer 2 protocol data units. | 09-18-2008 |
20080232310 | FLEXIBLE USER EQUIPMENT-SPECIFIED DISCONTINUOUS RECEPTION - The embodiments of the present invention provide for methods, devices, and systems adapted to enable an eNodeB and a user equipment (UE) to negotiate a set of discontinuous reception (DRX) parameters, as well as enable an eNodeB to instruct a UE to directly apply a certain DRX level or period from the negotiated set of DRX parameters, via Layer 3 signaling, Layer 2 in-band signaling, and/or L1/L2 signaling. | 09-25-2008 |
20080233974 | MULTIMEDIA BROADCAST AND MULTICAST SERVICE NOTIFICATION IN LONG TERM EVOLUTION - Methods, devices, and systems have various user equipment (UE) for reading multimedia broadcast and multicast service (MBMS) notifications via one or more paging indicators of a Paging Indication Channel (PICH). The paging indicators of the PICH functions as MBMS notification indicators, signaling the relevant UE to read the MBMS point-to-multipoint control channel (MCCH) for MBMS information, and thereby enabling the affected UE to configure themselves to receive the associated multimedia broadcast and/or multicast service. | 09-25-2008 |
20080291858 | Power Saving Wireless Local Area Network Portable Device - A system and method are provided for controlling bandwidth allocation in a wireless local area network (wLAN). The method comprises: expressing device bandwidth allocations in terms of a time base; in response to expressing the bandwidth allocation in terms of a time base, monitoring network communications; and, measuring the allocated bandwidths. The method may further comprise: establishing polling schedules in response to expressing the bandwidth allocation in terms of a time base; and, de-energizing devices in response to the polling schedules. Expressing device bandwidth allocations in terms of a time base includes establishing: an inter-transmission opportunity (TXOP) interval; and, a TXOP jitter. These fields are supplied in the IEEE 802.11e transmit specification (TSPEC). Then, de-energizing devices in response to the polling schedule includes disengaging transmission and receiving functions in the minimum TXOP intervals between polling events, where the minimum TXOP interval is the inter-TXOP interval minus the TXOP jitter. | 11-27-2008 |
20090046627 | METHOD AND SYSTEM FOR CONTROL OF DISCONTINUOUS RECEPTION (DRX) BY A MOBILE DEVICE IN A WIRELESS COMMUNICATIONS NETWORK SUPPORTING VOICE-OVER-INTERNET-PROTOCOL (VoIP) - A method and system for controlling discontinuous reception (DRX) in a mobile device in a wireless communications network that supports voice-over-internet-protocol (VoIP) and that uses an automatic repeat-request (ARQ) method, like a hybrid automatic repeat-request (HARQ) method, uses autonomous DRX control after initial VoIP traffic setup. If the mobile device transmits a negative-acknowledgement signal (NACK) indicating unsuccessful receipt of a VoIP packet, then it autonomously turns on a predetermined delay time later to receive the retransmission of the VoIP packet, where the predetermined delay time is related to the time for the base station to process the NACK and prepare the VoIP packet for retransmission. When the mobile device transmits or retransmits a VoIP packet, reception is deactivated, but is autonomously activated the predetermined delay time later to receive an acknowledgement signal (ACK) or NACK. VoIP packets may be transmitted from the mobile device the predetermined delay time before VoIP packets are transmitted from the base station. This alignment allows an ACK or NACK to be transmitted from the base station in the same transmission time interval (TTI) as a VoIP packet. | 02-19-2009 |
20090046789 | SYSTEMS AND METHODS FOR CONSERVING THE POWER SUPPLY OF A COMMUNICATIONS DEVICE - A method for conserving the power supply of an Orthogonal Frequency Division Multiplexing (OFDM) communications device is described. The location of a bit of information within one of a plurality of symbols is obtained. A sleep mode is entered into. The one symbol that includes the bit of information is monitored. A return to the sleep mode is executed. | 02-19-2009 |
20090073926 | SYSTEMS AND METHODS FOR ASSIGNING PHYSICAL RESOURCE BLOCKS - A method for assigning physical resource blocks (PRBs) is described. A first PRB is assigned to a first device from a plurality of devices. The first device maximizes a proportional fair algorithm on the first PRB. A second PRB is assigned to a second device from the plurality of devices. The second device maximizes a proportional fair algorithm on the second PRB. A determination is made whether a higher throughput would occur if the first PRB is assigned to the second device and the second PRB is assigned to the first device. The assignment of the first PRB is exchanged with the assignment of the second PRB if a higher throughput would occur. | 03-19-2009 |
20090073958 | METHOD AND SYSTEM FOR TRANSMISSION OF CHANNEL QUALITY INDICATORS (CQIs) BY MOBILE DEVICES IN A WIRELESS COMMUNICATIONS NETWORK - A method and system for optimizing channel quality indicator (CQI) transmissions by mobile devices in a cellular network allows transmission of CQIs at a slower rate and with fewer bits during voice-over-internet-protocol (VoIP) sessions than during non-real-time (NRT) data transmissions. A VoIP transmission typically includes “talkspurt” periods, during which VoIP packets are transmitted, and silence periods, which start with a silence indication (SID) packet and continue with periodic SID packets until a VoIP packet is received. When the base station is transmitting NRT data, the mobile device transmits CQIs to the base station at a first rate, with each CQI having a first fixed number of bits. When the base station is transmitting VoIP to the mobile device, then during a talkspurt period, the mobile device may transmit CQIs to the base station at a second rate slower than the first rate, and each CQI may have a second fixed number of bits less than the first fixed number of bits. However, during a silence period, the mobile device does not transmit CQIs to the base station, and uplink channel resources allocated for the CQIs can be reallocated to other mobile devices. | 03-19-2009 |
20090073959 | METHOD AND SYSTEM FOR VOICE-OVER-INTERNET-PROTOCOL (VoIP) TRANSMISSION IN A WIRELESS COMMUNICATIONS NETWORK - The invention is a method and system for reliably detecting the start and/or end of silence periods during voice-over-internet-protocol (VoIP) sessions in a wireless communications network. A VoIP session typically includes “talkspurt” periods, during which VoIP packets are transmitted, and silence periods, during which silence indication (SID) packets are transmitted. Both the base station (eNodeB or eNb) and the mobile device (user equipment or UE) may inspect the packets to identify them as VoIP or SID packets. Alternatively, only the eNB inspects the packets. The eNB then flags the first SID packet after a VoIP packet as the start of a silence period, and flags the first VoIP packet after a SID packet as the end of a silence period. The eNB then modifies the header of the medium access control (MAC) protocol data unit (PDU) prior to transmission to the UE. The UE then detects the modified MAC headers to identify the start and/or end of silence periods. | 03-19-2009 |
20090074090 | SYSTEMS AND METHODS FOR RESTRICTING THE LOCATION OF CONTROL INFORMATION IN PHYSICAL LAYER SIGNALING - A method for conserving the power supply of an Orthogonal Frequency Division Multiplexing (OFDM) communications device is described. The location of control information within one or two of a plurality of symbols is obtained. A sleep mode is entered into. The one or two symbols that include the control information are monitored. A return to the sleep mode is executed. | 03-19-2009 |
20090103482 | SYSTEMS AND METHODS FOR USING A FORMAT OF AN UPLINK CONTROL CHANNEL TO TRANSMIT A CHANNEL QUALITY INDICATOR - A method for using a format of an uplink control channel to transmit a channel quality indicator (CQI) is described. The uplink control channel is provided in a first format. The uplink control channel in the first format carries either the CQI or acknowledgment/non-acknowledgment (ACK/NAK) information. The CQI or the ACK/NAK information is inserted into the uplink control channel. Either the CQI or the ACK/NAK information is transmitted through uplink control channel. | 04-23-2009 |
20090253470 | CONTROL OF USER EQUIPMENT DISCONTINUOUS RECEPTION SETTING VIA MAC LCID - The embodiments of the present invention provide for methods, devices, and systems adapted to enable an eNodeB to instruct a user equipment/device (UE) to adjust its current discontinuous reception (DRX) state, cycle level or cycle state, based on one or more reserved bit values of a MAC LCID. | 10-08-2009 |
20090268624 | SYSTEMS AND METHODS FOR MEASUREMENT AND FEEDBACK OF CHANNEL QUALITY INDICATOR INFORMATION - User equipment may receive configuration information indicating whether the user equipment provides feedback of channel quality indicator (CQI) information in virtual resource block mode or physical resource block mode. If the configuration information indicates that the user equipment provides feedback in virtual resource block mode, the user equipment may calculate the CQI information for virtual resource blocks. The user equipment may feed back the CQI information for the virtual resource blocks to a Node B. | 10-29-2009 |
20090270108 | SYSTEMS AND METHODS FOR MEASURING CHANNEL QUALITY FOR PERSISTENT SCHEDULED USER EQUIPMENT - A method for measuring the quality of a channel for persistent scheduled user equipment (UE) in a communications system is described. Frequency location information for at least one physical resource block (PRB) for a Physical Downlink Shared Channel (PDSCH) is received. The quality of a channel associated with at least one frequency sub-band of the frequency location information is measured. A channel quality indicator (CQI) corresponding to the measured channel quality is transmitted. | 10-29-2009 |
20090296595 | SYSTEMS AND METHODS FOR REDUCING FEEDBACK OVERHEAD IN WIRELESS NETWORKS USING CHANNEL CHARACTERISTICS - A method for reducing feedback overhead in a wireless communications system is described. Channel quality indicator (CQI) values corresponding to a measured channel quality are received from one or more mobile communications devices. The mobile communications devices to be scheduled at a future time are estimated. CQI values are requested from the mobile communications devices that are estimated to be scheduled at a future time. | 12-03-2009 |
20110116451 | METHOD AND SYSTEM FOR CONTROL OF DISCONTINUOUS RECEPTION (DRX) BY A MOBILE DEVICE IN A WIRELESS COMMUNICATIONS NETWORK SUPPORTING VOICE-OVER-INTERNET-PROTOCOL (VOIP) - A method and system for controlling discontinuous reception (DRX) in a mobile device in a wireless communications network that supports voice-over-internet-protocol (VoIP) and that uses an automatic repeat-request (ARQ) method, like a hybrid automatic repeat-request (HARQ) method, uses autonomous DRX control after initial VoIP traffic setup. If the mobile device transmits a negative-acknowledgement signal (NACK) indicating unsuccessful receipt of a VoIP packet, then it autonomously turns on a predetermined delay time later to receive the retransmission of the VoIP packet, where the predetermined delay time is related to the time for the base station to process the NACK and prepare the VoIP packet for retransmission. When the mobile device transmits or retransmits a VoIP packet, reception is deactivated, but is autonomously activated the predetermined delay time later to receive an acknowledgement signal (ACK) or NACK. VoIP packets may be transmitted from the mobile device the predetermined delay time before VoIP packets are transmitted from the base station. This alignment allows an ACK or NACK to be transmitted from the base station in the same transmission time interval (TTI) as a VoIP packet. | 05-19-2011 |
20140161075 | Method and System for Control of Discontinuous Reception (DRX) by a Mobile Device in a Wireless Communications Network Supporting Voice-Over-Internet-Protocol (VoIP) - A method and system for controlling discontinuous reception (DRX) in a mobile device in a wireless communications network uses autonomous DRX control after initial VoIP traffic setup. If the mobile device transmits a negative-acknowledgement signal (NACK) indicating unsuccessful receipt of a VoIP packet, then it autonomously turns on a predetermined delay time later to receive the retransmission of the VoIP packet. The predetermined delay time is related to the time for the base station to process the NACK and prepare the VoIP packet for retransmission. When the mobile device transmits or retransmits a VoIP packet, reception is deactivated, but is autonomously activated the predetermined delay time later to receive an acknowledgement signal (ACK) or NACK. VoIP packets may be transmitted from the mobile device the predetermined delay time before VoIP packets are transmitted from the base station. | 06-12-2014 |