Patent application number | Description | Published |
20080310343 | Methods of jointly assigning resources in a multi-carrier, multi-hop wireless communication system - Methods for jointly determining tones, power, scheduling and routing of links in a multi-carrier, multi-hop network to achieve certain desired throughput objectives between source and destination nodes. The methods effectively enhance or optimize throughput received by each destination router under node traffic constraints such as power, scheduling and flow constraints that apply to each link between each of a plurality of nodes within the mesh network. | 12-18-2008 |
20090083431 | Content rate selection for media servers with proxy-feedback-controlled frame transmission - In a method for dynamically setting a content rate of a multimedia session for a client in a network, a proxy server receives a channel condition feedback message from a network controller and determines whether a receiver report message has been received from the client since a most recent previous channel condition feedback message. The channel condition feedback message includes current channel condition information for the network. The proxy server sends one of an extended feedback report message and a short feedback report message to a media server based on the determining step. The short feedback report message includes at least a maximum transmission rate parameter for the multimedia session. The extended feedback report message includes at least information contained in the receiver report message. The extended feedback report message may, in addition, include the maximum transmission rate parameter for the multimedia session. | 03-26-2009 |
20090089447 | Proxy-driven content rate selection for streaming media servers - Methods for proxy-driven content rate selection for streaming media servers are provided. In one method, one or more maximum transmission rate parameters from a network controller are stored at a proxy server in response to a receiver report message from the client. A target rate for the media session is generated based on the stored maximum transmission rate parameters, and the target rate is transmitted to a media server in a proxy-to-server feedback message. The media server selects the content rate from among a plurality of supported content rates in response to the proxy-to-server feedback message from the proxy server, and streams streaming multimedia frames to the client at the selected content rate. | 04-02-2009 |
20100008281 | Broadcast and multicast in single frequency networks using othrogonal space-time codes - In one embodiment, a method of transmitting includes assigning column vectors of a generalized orthogonal space time code matrix to coverage areas of a plurality of base stations such that each coverage area is assigned one column vector. The same data is transmitted from each of the plurality of base stations in the coverage areas such that the data transmitted in each coverage area is transmitted using the column vector assigned to the coverage area. | 01-14-2010 |
20100008332 | Method for half-and full-duplex subscriber station operation in frequency division duplex systems - The present invention provides a novel framing structure that can be used to smoothly evolve a Time Division Duplex (TDD) wireless communications technology to a Frequency Division Duplex wireless communications technology. A method for establishing the start time of an uplink frame that is offset in relation to a downlink frame by an allocation start time is provided. In addition, methods of allocating downlink and uplink resources for half-duplex and full frequency division duplex operation with adequate provisions for transmit-receive and receive-transmit time gaps are also provided. | 01-14-2010 |
20100067435 | ARCHITECTURE TO SUPPORT NETWORK-WIDE MULTIPLE-IN-MULTIPLE-OUT WIRELESS COMMUNICATION OVER AN UPLINK - The present invention provides a method of coordinating the uplink transmissions from at least one mobile unit to a plurality of base stations. The method is implemented in a control and data plane entity and includes scheduling, at the control plane function, uplink signals for transmission from the mobile unit(s) to the plurality of base stations. The method also includes receiving, at the data plane function from the plurality of base stations, signals including scheduled uplink signals transmitted from the mobile unit(s) to the plurality of base stations. The method further includes estimating, at the data plane function, information bits transmitted in the scheduled uplink signals using the received signals and channel state information indicative of a plurality of wireless communication links between the mobile unit(s) and the plurality of base stations. | 03-18-2010 |
20100067450 | ARCHITECTURE TO SUPPORT NETWORK-WIDE MULTIPLE-IN-MULTIPLE-OUT WIRELESS COMMUNICATION OVER A DOWNLINK - The present invention provides a method of coordinating the downlink transmissions from a plurality of base stations to at least one mobile unit. The method is implemented in a control plane entity and includes receiving, at the control plane entity and from each of the plurality of base stations, channel state information for a plurality of wireless communication channels between the plurality of base stations and one or more mobile units. The method also includes determining, at the control plane entity and based on the channel state information, transmission formats for downlink transmissions from the plurality of base stations to the mobile unit(s). The method further includes providing the transmission formats to the plurality of base stations. | 03-18-2010 |
20100069010 | Distributed multi-cell successive interference cancellation for uplink cellular networks - Example embodiments are directed to methods of reducing inter-cell interference in wireless networks using successive interference cancellation (SIC). Example embodiments use inter-cell cooperation between cells and/or sectors to successfully decode their associated users' data signals and pass on the decoded data signals to other cells/sectors in order to reduce inter-cell interference and allow for improved decoding of users' data signals. Example embodiments include passing the decoded data signals via the backhaul. Example embodiments also include static and dynamic ordering of user data signals in conjunction with the application of SIC. | 03-18-2010 |
20100118926 | METHODS AND DEVICES FOR SELECTING SETS OF AVAILABLE SUB-CHANNELS - Information is transmitted over selected, Orthogonal Frequency Division Multiplexed (OFDM) sub-channels to avoid frequencies with unacceptable congestion, noise or interference levels. Using frequency hopping, selected non-contiguous OFDM sub-channels used for transmission may vary with time. Once a group of OFDM sub-channels is selected, a power level and modulation technique may also be selected based on channel quality. | 05-13-2010 |
20100215108 | Ranking and Grouping of Transmissions in Communication System - Improved ranking and grouping techniques are disclosed for communication systems such as a multiple input multiple output system. For instance, techniques are disclosed for ranking and grouping users that are eligible for single-user and/or multiple-user transmissions. In one case, ranking and grouping are performed independently and, in another case, ranking and grouping are performed jointly. | 08-26-2010 |
20100218065 | Method and apparatus of HARQ process selection - A method for implementation of HARQ between a transmitting node and a receiving node in a communication network is provided. HARQ processes may be selected from a list for instantiation according to a policy that may deviate from strict first-in, first-out processing of packets. The greater flexibility that this affords may lead to improved efficiency in the use of transmission resources. | 08-26-2010 |
20100302984 | Method and apparatus for mobile broadcast and multicast using randomized transmit signal phases in a single frequency network - A base station transmitter for a broadcast/multicast single frequency network may include a base station component configured to randomize a phase of the signal for the base station transmitter to transmit, wherein the base station transmitter is configured to transmit a signal having a frequency common to a frequency of a signal sent by another base station component in the network. A method for improving performance of single frequency networks may include transmitting single frequency signals from base stations with pseudo-random phases including in the signals, data that permits a receiver compatible with the network to synchronously replicate the pseudo-random phases used in the transmission of the single frequency signals. | 12-02-2010 |
20110055403 | Collaboration agent based system architecture to support collaborative multimedia applications over wireless networks - In one embodiment, a method of sending data from a first node participating in a session of a collaborative application via a wireless network to a plurality of second nodes participating in the session of the collaborative application via a wired network includes generating a plurality of data streams corresponding to the plurality of second nodes at the first node, reducing the plurality of data streams to a single stream from among the plurality of data streams, and sending the single data stream to a collaboration agent associated with the first node and connected to the wired network. In another embodiment instances of the collaborative application are run at both the first node and the collaboration agent. In yet another embodiment, an instance of the collaborative application is run only at the collaboration agent which is connected to the first node via a bi-directional windows sharing link. | 03-03-2011 |
20110116503 | Technique For Packet Compression In An Application Level Multicast - In an application level multicast (ALM), multiple flows of data packets containing shared material are destined for different devices. A packet compression device is used to compress the data packets to reduce traffic load. This compression device includes a cache for recording the payloads of selected data packets which currently are not of record in the cache. If it is determined that the cache has therein a record of an identical version of the payload of a data packet, the compression device releases a compressed version of the data packet which includes a representation of the payload in lieu of the actual payload. | 05-19-2011 |
20110124289 | Opportunistic Network Interference Cancellation For Wireless Networks - Embodiments are described herein to provide improvements to known network interference cancellation techniques. One general approach involves a receiver attempting to decode ( | 05-26-2011 |
20110225317 | Content rate selection for media servers with proxy-feedback-controlled frame transmission - In a method for dynamically setting a content rate of a multimedia session for a client in a network, a proxy server receives a channel condition feedback message from a network controller and determines whether a receiver report message has been received from the client since a most recent previous channel condition feedback message. The channel condition feedback message includes current channel condition information for the network. The proxy server sends one of an extended feedback report message and a short feedback report message to a media server based on the determining step. The short feedback report message includes at least a maximum transmission rate parameter for the multimedia session. The extended feedback report message includes at least information contained in the receiver report message. The extended feedback report message may, in addition, include the maximum transmission rate parameter for the multimedia session. | 09-15-2011 |
20120071153 | Receive Signal Processing In Wireless Networks - Among the various methods proposed to address interference problems in wireless networks, two promising ones are: Network Multi-Input-Multi-Output (often referred to as Network MIMO) decoding (which employs joint MIMO receiver processing of signals received at multiple antennas); and Multi-Cell Successive Interference Cancellation (MC-SIC). These methods have complementary strengths and limitations when implemented in a practical setting. The approach described herein attempts to combine the strengths of these two methods while working within the constraints imposed by practical implementations to provide a viable hybrid solution. | 03-22-2012 |
20120207037 | PARTITIONING RESOURCES WITH SOFT REUSE IN A WIRELESS NETWORK - Systems and methods are disclosed for reusing resources of a wireless network. Radio communications resources of the wireless network are divided into partitions. A system described herein allows access to resources in the first partition by a first set of users for primary communications on the first partition, and allows access to resources in the first partition by a second set of users for secondary communications on the first partition. The control system also allows access to resources in the second partition by the second set of users for primary communications on the second partition, and allows access to resources in the second partition by the first set of users for secondary communications on the second partition. | 08-16-2012 |
20120289231 | Method And Apparatus For Improved Mobile Communications In Heterogeneous Wireless Networks - Various methods and devices are provided to address the need for improved mobile communications in heterogeneous networks. In one method, an anchor-cell transceiver node communicates with a mobile device via a primary link. The anchor-cell transceiver node conveys information for the mobile device to the mobile device by routing at least a portion of the information to the mobile device via a secondary-cell transceiver node. | 11-15-2012 |
20130188608 | Network Node And Method For Virtual Soft Handoff Operation - Various methods and network nodes (e.g., base stations or base transceiver nodes) are provided to address the need for enhanced uplink performance. In a first method, a virtual soft handoff network node receives ( | 07-25-2013 |
20140029425 | Method And Apparatus For Inter-Carrier Load Balancing - Various methods and devices are provided to address the need for improved inter-carrier load balancing. In one method, network equipment determines ( | 01-30-2014 |
20140029448 | Method And Apparatus For Improved Signal Processing In Wireless Networks - Various methods and devices are provided to address the need for improved cooperation-based signal processing. In a first method, network equipment determines ( | 01-30-2014 |
20140294114 | METHODS AND APPARATUS FOR REDUCING INTERFERENCE EFFECT ON DATA TRANSMITTED OVER A COMMUNICATION CHANNEL - In one example embodiment, a method for reducing an effect of an interference signal on data being transmitted over a communication channel is disclosed. The method includes determining, by a processor, a code vector representing data based on an information vector and an interference vector, the information vector representing the data, the interference vector representing the interference signal. The method further includes generating, by the processor, a transmit vector for transmitting the data based on the code vector and the interference vector. | 10-02-2014 |
20140294126 | METHODS AND APPARATUS FOR REDUCING INTERFERENCE EFFECT ON DATA TRANSMITTED OVER A COMMUNICATION CHANNEL - In one example embodiment, a method for reducing an effect of an interference signal on data being transmitted over a communication channel includes determining, by a processor, a code word based on at least an information vector and an interference vector, the information vector representing the data, the interference vector representing the interference signal. The method further includes determining, by the processor, a code vector based on the determined code word. The method further includes generating, by the processor, a transmit vector based on the code vector and the interference vector. | 10-02-2014 |
20150078478 | METHODS AND APPARATUS FOR REDUCING INTERFERENCE EFFECT ON DATA TRANSMITTED OVER A COMMUNICATION CHANNEL - In one example embodiment, a method for reducing an effect of an interference signal on data being transmitted over a communication channel includes determining, by the processor, a code word based on a base information vector and an auxiliary vector, the base information vector including base information bits representing the data to be transmitted over the communication channel, the auxiliary vector corresponding to an interference vector representing the interference signal. The method further includes generating, by the processor, a transmit vector for transmission based on the determined code word and the interference vector. | 03-19-2015 |