Patent application number | Description | Published |
20090067369 | ROUTING IN A MESH NETWORK - Apparatus and method for associating with any one of a plurality of access points in a mesh network including estimating a plurality of metrics for the access points, the estimated metrics being related to throughputs provided by the access points, and selecting one of the access points to associate with based on the metrics and a plurality of backhaul metrics for the access points, the backhaul metrics being related to backhaul throughputs for the access points. The backhaul metrics may be advertised by the access points. | 03-12-2009 |
20090176503 | FLEXIBLE MEDIUM ACCESS CONTROL (MAC) FOR AD HOC DEPLOYED WIRELESS NETWORKS - Systems and methods are disclosed that facilitate wireless communication using resource utilization messages (RUMs), in accordance with various aspects. A RUM may be generated for a first node, such as an access point or an access terminal, to indicate that a first predetermined threshold has been met or exceeded. The RUM may be weighted to indicate a degree to which a second predetermined threshold has been exceeded. The first and/or second predetermined thresholds may be associated with various parameters associated with the node, such as latency, throughput, data rate, spectral efficiency, carrier-to-interference ratio, interference-over-thermal level, etc. The RUM may then be transmitted to one or more other nodes to indicate a level of disadvantage experienced by the first node. | 07-09-2009 |
20090191817 | Adaptive transmission of resource utilization messages based on throughput - An adaptive scheme controls the transmission of interference management messages by wireless nodes. For example, the adaptive scheme may be used to determine whether and/or how to transmit resource utilization messages. Such a determination may be based on, for example, comparison of a quality of service threshold with a current quality of service level associated with received data. A quality of service threshold may be adapted based on the effect of previously transmitted resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on the frequency at which the wireless node transmits resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on information received from another wireless node. An adaptation scheme also may depend on the type of traffic received by a given wireless node. A quality of service threshold also may be adapted based on throughput information. | 07-30-2009 |
20090191890 | ADAPTIVE TRANSMISSION OF RESOURCE UTILIZATION MESSAGES - An adaptive scheme controls the transmission of interference management messages by wireless nodes. For example, the adaptive scheme may be used to determine whether and/or how to transmit resource utilization messages. Such a determination may be based on, for example, comparison of a quality of service threshold with a current quality of service level associated with received data. A quality of service threshold may be adapted based on the effect of previously transmitted resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on the frequency at which the wireless node transmits resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on information received from another wireless node. An adaptation scheme also may depend on the type of traffic received by a given wireless node. A quality of service threshold also may be adapted based on throughput information. | 07-30-2009 |
20090207730 | SCHEDULING POLICY-BASED TRAFFIC MANAGEMENT - Various traffic management techniques may be employed in a multi-hop wireless communication system. For example, a decision to transmit data to another node may be based on whether that node is able to effectively transmit its data. A decision to transmit an interference management message may be based on the amount of data a parent node may transmit. A decision to transmit an interference management message may be based on how effectively data is being transmitted. A weight may be assigned for an interference management message based on a traffic scheduling policy. | 08-20-2009 |
20090207777 | TRAFFIC MANAGEMENT FOR MULTI-HOP WIRELESS COMMUNICATION - Various traffic management techniques may be employed in a multi-hop wireless communication system. For example, a decision to transmit data to another node may be based on whether that node is able to effectively transmit its data. A decision to transmit an interference management message may be based on the amount of data a parent node may transmit. A decision to transmit an interference management message may be based on how effectively data is being transmitted. A weight may be assigned for an interference management message based on a traffic scheduling policy. | 08-20-2009 |
20090209262 | TRAFFIC MANAGEMENT EMPLOYING INTERFERENCE MANAGEMENT MESSAGES - Various traffic management techniques may be employed in a multi-hop wireless communication system. For example, a decision to transmit data to another node may be based on whether that node is able to effectively transmit its data. A decision to transmit an interference management message may be based on the amount of data a parent node may transmit. A decision to transmit an interference management message may be based on how effectively data is being transmitted. A weight may be assigned for an interference management message based on a traffic scheduling policy. | 08-20-2009 |
20090245182 | ADAPTIVELY REACTING TO RESOURCE UTILIZATION MESSAGES INCLUDING CHANNEL GAIN INDICATION - An adaptable decision parameter is used to determine whether to react to resource utilization messages. The decision parameter may comprise a decision threshold that is adapted based on received resource utilization messages. The decision parameter may comprise a probability that is used to determine whether to react to a received resource utilization message. Such a probability may be based on, for example, one or more channel conditions, the number of interferers seen by a node, the number of received resource utilization messages, or some other form of resource utilization message-related information. | 10-01-2009 |
20090247177 | ADAPTING DECISION PARAMETER FOR REACTING TO RESOURCE UTILIZATION MESSAGES - An adaptable decision parameter is used to determine whether to react to resource utilization messages. The decision parameter may comprise a decision threshold that is adapted based on received resource utilization messages. The decision parameter may comprise a probability that is used to determine whether to react to a received resource utilization message. Such a probability may be based on, for example, one or more channel conditions, the number of interferers seen by a node, the number of received resource utilization messages, or some other form of resource utilization message-related information. | 10-01-2009 |
20090257358 | METHOD AND APPARATUS FOR CARRIER IDENTITY DETERMINATION IN MULTI-CARRIER COMMUNICATION SYSTEMS - Systems and methods are described that facilitate the determination and request of resources a node may wish to reserve. The resources include a plurality of carriers that are shared with other nodes. In an approach, the node determines a condition related to the plurality of carriers; creates an ordering of the plurality of resources; and transmits a resource utilization message (RUM) for one or more of the plurality of resources based on the ordering and the condition. | 10-15-2009 |
20090257405 | METHOD AND APPARATUS FOR CARRIER SELECTION IN MULTI-CARRIER COMMUNICATION SYSTEMS - Systems and methods are described that facilitate the determination and request of resources a node may wish to reserve. The resources include a plurality of carriers that are shared with other nodes. In an approach, the node determines a condition related to a plurality of resources; identify a desired amount of resources from the plurality of resources based on the condition; and transmit a resource utilization message (RUM) for at least one of the plurality of resources based on the desired amount of resources. | 10-15-2009 |
20090304120 | WIRELESS COMMUNICATION SYSTEM WITH IMPROVED BROADCAST COVERAGE - Techniques to transmit data with cyclic delay diversity and pilot staggering are described. For cyclic delay diversity, OFDM symbols having different cyclic delay durations are generated. The cyclic delay durations for the OFDM symbols may be selected to be time varying with respect to the cyclic delay durations for OFDM symbols transmitted by a neighboring base station. An FDM pilot is generated and multiplexed on multiple sets of subbands in different symbol periods. Waveforms for a second radio technology (e.g., W-CDMA) may be generated for data to be transmitted with this radio technology. The OFDM symbols are multiplexed onto time slots used for OFDM, and the waveforms for the second radio technology are multiplexed onto time slots used for this radio technology. One or multiple modulated signals may be generated based on the multiplexed OFDM symbols and waveforms. Each modulated signal is transmitted from a respective antenna. | 12-10-2009 |
20090323598 | METHOD AND APPARATUS FOR RESOURCE UTILIZATION MANAGEMENT IN A MULTI-CARRIER COMMUNICATIONS SYSTEM - Systems and methods are described that facilitate evaluating conditions of nodes (e.g., access points, access terminals, etc.) in a wireless communication environment having a plurality of carriers to determine a level of disadvantage for a given node relative to other nodes. The node may transmit a resource utilization message (RUM) that represents the level of disadvantage for the node and request other interference nodes to back off on one or more carriers. | 12-31-2009 |
20090323640 | FAIR RESOURCE SHARING IN WIRELESS COMMUNICATIONS - Providing for fair resource sharing among wireless nodes in a wireless communication environment is described herein. By way of example, fairness can comprise establishing a set of resource sharing credits for wireless nodes. By expending credits, a node can borrow a resource of another node, to enable or enhance operation of the borrowing node. Credits for the borrowing node are decreased based on consumption of a shared resource, or credits for the lending node are increased based on such consumption, or both. Once an amount of credits expires, a node can be restricted from borrowing further resources until enough resources are lent to build up a suitable amount of credits. Accordingly, fairness can comprise correlating shared resource consumption with shared resource provisioning, to encourage participation in cooperative wireless communications. | 12-31-2009 |
20090325479 | RELAY ANTENNA INDEXING FOR SHARED ANTENNA COMMUNICATION - Providing for distributed processing for a set of wireless communication devices to implement distributed, multi-antenna communication via one or more of the devices is described herein. By way of example, a relay link can be established between one or more wireless transceivers. The link can be utilized to distribute an indexing parameter to a remote transceiver. The indexing parameter can be employed to identify a set of index-specific instructions configured for a particular wireless node of a network. Based on the instructions and indexing parameter, such transceiver can locally compute and transmit, or receive and decode, a stream of traffic data for the multi-antenna communication. Thus, for instance, a P-P link between UTs can be employed to implement increased throughput and reduced interference benefits of multi-antenna communication for unplanned configurations of mobile devices. | 12-31-2009 |
20090325480 | METHOD AND APPARATUS FOR SELECTING AND PROCESSING SIGNALS FROM A SOURCE STATION AND RELAY STATIONS - Techniques for selecting and processing signals from different stations in a wireless network are described. A destination station may receive a direct signal from a source station and at least one relay signal from at least one relay station. The destination station may determine metrics for the source and relay stations, e.g., based on pilots received from these stations. The destination station may select at least one signal to process from among the direct and relay signals based on the metrics for the source and relay stations. The destination station may select the direct signal if the metric for the source station exceeds a threshold. The destination station may select the relay signal from each relay station having a metric exceeding at least one threshold. The destination station may process the at least one selected signal to recover a transmission sent by the source station to the destination station. | 12-31-2009 |
20100002656 | OPPORTUNISTIC RELAY SCHEDULING IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate providing opportunistic relay node communication based on scheduling of other communications in a wireless network. In particular, a relay node can maintain a backhaul link with an access point and an access link with a mobile device to facilitate communicating information therebetween. Time slots during which the backhaul link is active can be determined and avoided during scheduling access link communications with the mobile device. Furthermore, resource assignments from the access point to the mobile device can be monitored and decoded such that time slots associated therewith can also be determined and avoided. Thus, the relay node can communicate with mobile devices in time slots where the backhaul link is inactive and/or the mobile devices are not occupied communicating directly with the access point. | 01-07-2010 |
20100022263 | SYSTEM AND METHOD FOR NETWORK MANAGEMENT - Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation. | 01-28-2010 |
20100029282 | RESOURCE PARTITIONING IN HETEROGENEOUS ACCESS POINT NETWORKS - Providing for dynamic resource provisioning in wireless communication is described herein. By way of example, various wireless performance metrics are collected by respective network access points as an aggregate measure of wireless network performance. Aggregated data can be utilized to generate a performance model for the network and for individual access points. Changes to the data are updated to the model to provide a steady-state characterization of network performance. Wireless resources are generated for respective access points in a manner that optimizes wireless performance. Additionally, resource assignments can be updated at various intervals to re-optimize for existing wireless conditions, whether event driven or based on performance metrics. Accordingly, a robust and dynamic optimization is provided for wireless network resource provisioning that can accommodate heterogeneous access point networks in a changing topology. | 02-04-2010 |
20100260133 | FLEXIBLE MEDIUM ACCESS CONTROL (MAC) FOR AD HOC DEPLOYED WIRELESS NETWORKS - Systems and methods are disclosed that facilitate wireless communication using resource utilization messages (RUMs), in accordance with various aspects. A RUM may be generated for a first node, such as an access point or an access terminal, to indicate that a first predetermined threshold has been met or exceeded. The RUM may be weighted to indicate a degree to which a second predetermined threshold has been exceeded. The first and/or second predetermined thresholds may be associated with various parameters associated with the node, such as latency, throughput, data rate, spectral efficiency, carrier-to-interference ratio, interference-over-thermal level, etc. The RUM may then be transmitted to one or more other nodes to indicate a level of disadvantage experienced by the first node. | 10-14-2010 |
20110194593 | DL MU-MIMO operation in LTE-A - Techniques for scheduling UEs are described. In one design, a scheduler (e.g., for a cell) may receive channel direction information (CDI) and channel strength information (CSI) from a plurality of UEs. In one design, the CDI from each UE may include at least one eigenvector, and the CSI from each UE may include at least one singular value corresponding to the at least one eigenvector. The scheduler may schedule at least one UE among the plurality of UEs for data transmission based on the CDI and CSI from the plurality of UEs. The scheduler may select the at least one UE based on a metric related to signal-to-leakage ratio (SLR), or spectral efficiency, etc. In one design, the scheduler may evaluate the performance of different sets of UEs to determine whether to schedule one UE for single-user MIMO or multiple UEs for multi-user MIMO. | 08-11-2011 |
20120093058 | MEHTOD AND APPARATUS FOR COMMUNICATION IN A SYSTEM EMPLOYING DIFFERING TRANSMISSION PROTOCOLS - A method and apparatus for communication in a system employing differing transmission protocols. It is determined whether a first time slot of one transmission protocol is adjacent to a second time slot of another transmission protocol, and if a first symbol within the first time slot is adjacent to a second symbol of the second time slot. A pilot power and/or a number of pilot sub-carriers or tones of the first symbol is increased and channel estimation is performed on the first symbol. | 04-19-2012 |
20120129562 | ASSOCIATION RULES BASED ON CHANNEL QUALITY FOR PEER-TO-PEER AND WAN COMMUNICATION - Techniques are provided for association decisions by a user equipment (UE) or the like. In one example, there is provided a method that may involve discovering a peer UE, and determining a first metric for the peer UE. The method may further involve determining a second metric for a base station in a wireless area network (WAN). The method may further involve deciding whether to associate with the peer UE for peer-to-peer (P2P) communication or with the WAN for communication via the base station based on the first and second metrics. For example, the first metric may be determined based on received power of the peer UE at the first UE, and the second metric may be determined based on received power of the base station at the first UE. | 05-24-2012 |
20120188875 | METHOD AND APPARATUS FOR CARRIER IDENTITY DETERMINATION IN MULTI-CARRIER COMMUNICATION SYSTEMS - Systems and methods are described that facilitate the determination and request of resources a node may wish to reserve. The resources include a plurality of carriers that are shared with other nodes. In an approach, the node determines a condition related to the plurality of carriers; creates an ordering of the plurality of resources; and transmits a resource utilization message (RUM) for one or more of the plurality of resources based on the ordering and the condition. | 07-26-2012 |
20120201158 | PEER-TO-PEER / WAN ASSOCIATION CONTROL AND RESOURCE COORDINATION FOR MOBILE ENTITIES USING AGGREGATE NEIGHBORHOOD UTILITY METRICS - In a cellular wireless communication system, peer-to-peer (P2P) links between mobile devices are implemented, and controlled using an aggregate utility metric for a group of P2P and cellular links. A mobile node participating in a P2P link, or an eNB, may periodically broadcast an activity level indicator indicating a resource-dependent activity level of the link. The node may control the activity level in response to utility metrics received from members of neighboring P2P links to maximize an aggregate utility of the link and the neighboring P2P links sharing at least a subset of resources of a common frequency spectrum. Formation or termination of P2P links may be controlled in response to comparing a calculated achievable utility value to a current utility value of a link, and taking action calculated to maximize the aggregate utility value. | 08-09-2012 |
20120289248 | SYSTEM AND METHOD FOR NETWORK MANAGEMENT - Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation. | 11-15-2012 |
20120290720 | SYSTEM AND METHOD FOR NETWORK MANAGEMENT - Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation. | 11-15-2012 |
20120307765 | Fair Resource Sharing in Wireless Communication - Providing for fair resource sharing among wireless nodes in a wireless communication environment is described herein. By way of example, fairness can comprise establishing a set of resource sharing credits for wireless nodes. By expending credits, a node can borrow a resource of another node, to enable or enhance operation of the borrowing node. Credits for the borrowing node are decreased based on consumption of a shared resource, or credits for the lending node are increased based on such consumption, or both. Once an amount of credits expires, a node can be restricted from borrowing further resources until enough resources are lent to build up a suitable amount of credits. Accordingly, fairness can comprise correlating shared resource consumption with shared resource provisioning, to encourage participation in cooperative wireless communications. | 12-06-2012 |
20130194948 | METHODS FOR INDICATING BACKHAUL RELAY GEOMETRY - A backhaul quality is measured. One or more subsets of cell identifiers having a mapped backhaul quality that maps to the measured backhaul quality are identified. The one or more subsets have a set of cell identifiers associated therewith. A network is queried to indicate one or more cell identifiers in the identified subset of cell identifiers available for a user equipment (UE) relay. One of the one or more indicated cell identifiers is selected. If more than one subset of cell identifiers has a mapped backhaul quality that maps to the measured backhaul quality, first and second subsets having respective first and second mapped backhaul qualities are selected and the backhaul qualities are compared relative to a backhaul quality threshold. The mapped backhaul quality that most satisfies the backhaul quality threshold is identified for the network query. | 08-01-2013 |
20130223324 | APPARATUS AND METHOD FOR OPPORTUNISTIC RELAY ASSOCIATION - A method, an apparatus, and a computer program product for associating a user equipment (UE) with a relay in a wireless network are provided. The apparatus determines a relay backhaul link quality of a relay; determines a path loss from a UE to the relay; and compares the relay backhaul link quality to a direct link quality between the UE and a base station, and the path loss to a path loss threshold to determine whether to associate the UE with the relay. | 08-29-2013 |
20130265896 | PROCEDURES TO ACTIVATE OPPORTUNISTIC RELAYS - Aspects of the present disclosure relate to techniques for activating opportunistic relays. A combination of uplink and downlink pilots may be used to switch on user equipment relays (UeNBs) in an effort to make more accurate measurements in an effort to enable handovers. According to aspects of the present disclosure, a relay may evaluate one or more channel conditions, determine whether or not to transmit downlink reference signals to a UE based on the evaluation, and transmit downlink reference signals to the UE based on the determination. According to aspects, a relay may determine a set of resources reserved for transmission of uplink pilots by UEs, monitor the set of resources to detect transmission of uplink pilots, and report, to an eNB, a power at which the uplink pilots were received. | 10-10-2013 |