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402 results about "Shared spectrum" patented technology
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Coordinated satellite-terrestrial frequency reuse
InactiveUS6892068B2Facilitates assignmentEasy to shareRadio/inductive link selection arrangementsRadio transmissionFrequency spectrumFrequency reuse
A system and method of operation for efficiently reusing and / or sharing at least a portion of the frequency spectrum between a first satellite spot beam and a second satellite spot beam, and / or an underlay terrestrial network associated with a second satellite spot beam. The spectrum is efficiently reused and / or shared between respective spot beams and / or associated underlay terrestrial systems in a manner minimizes interference between the respective satellite and terrestrial systems.
Owner:ATC TECH LLC
Coordinated satellite-terrestrial frequency reuse
InactiveUS20020041575A1Improve efficiencyMinimize interferenceRadio transmissionWireless commuication servicesFrequency spectrumFrequency reuse
A system and method of operation for efficiently reusing and / or sharing at least a portion of the frequency spectrum between a first satellite spot beam and a second satellite spot beam, and / or an underlay terrestrial network associated with a second satellite spot beam. The spectrum is efficiently reused and / or shared between respective spot beams and / or associated underlay terrestrial systems in a manner minimizes interference between the respective satellite and terrestrial systems.
Owner:ATC TECH LLC
Method and system for sharing spectrum in a wireless communications network
InactiveUS20070223419A1Radio/inductive link selection arrangementsWireless commuication servicesFrequency spectrumCommunication unit
A method and system for sharing spectrum in a wireless communications network are disclosed. As one example, a method for sharing spectrum is disclosed, which includes the steps of determining if two base stations in the wireless communications network are to share a frequency spectrum, and if two base stations in the wireless communications network are to share a frequency spectrum, determining if the two base stations in the wireless communications network have non-overlapping wireless communications coverage. Also, if the two base stations in the wireless communications network have non-overlapping wireless communications coverage, determining if a first mobile communications unit associated with a first base station of the two base stations has wireless communications coverage that overlaps with wireless communications coverage of a second mobile communications unit associated with a second base station of the two base stations, and if the first mobile communications unit has wireless communications coverage that overlaps with wireless communications coverage of the second mobile communications unit, enabling the two base stations to use a synchronized parallel operation spectrum sharing mode for communications. Also, a Contention-for-being-Master approach is disclosed as one primary method for sharing spectrum, which can be treated separately from all other contention methods, or combined with the exemplary contention method disclosed herein.
Owner:SAMSUNG ELECTRONICS CO LTD
Uplink channel access, reservation and data transmission for licensed assist access long term evolution (laa-lte)
ActiveUS20170041805A1Error prevention/detection by using return channelNetwork planningStart timeFrequency spectrum
A mobile device obtains data to be wirelessly transmitted over a shared spectrum in an uplink channel to a base station. The uplink channel is formatted with a frame / subframe structure with a predetermined timing. The mobile device determines whether the shared spectrum is free for transmission according to a Listen Before Transmit procedure. When the shared spectrum is free for transmission, the mobile device selects a start time in the uplink channel that mitigates interference from other mobile devices in proximity to the mobile device. Beginning at the start time, the mobile device transmits the data over the shared spectrum in the uplink channel to the base station.
Owner:CISCO TECH INC
Method and apparatus for flexible spectrum usage in communications systems
InactiveUS20110096703A1Reduce distractionsReduce overlapRadio transmissionDuplex signal operationFrequency spectrumTransceiver
Methods and apparatuses are disclosed that provide flexible use of a shared radio resource. An apparatus determines from monitoring signal energy on a shared radio resource whether other transmitters are present. A predetermined set of time division duplex (TDD) signaling patterns are identified. A correlation is performed between signal energy received on the shared radio resource and the predetermined TDD signaling patterns. The apparatus may then determine a TDD signaling pattern that may reduce or avoid interference with any other transmitters using the shared resource. The shared radio resource may be, for example, a shared frequency spectrum. Efficient allocation of radio resources among apparatuses such as radio transceivers, without fixed time references or predetermined patterns, may be obtained. The radio transceivers may be base stations or mobile user equipment in a wireless communications system. The apparatus may be an integrated circuit, a portion thereof, or chipset.
Owner:NOKIA TECHNOLOGLES OY
Rrm measurement and reporting for license assisted access
Methods, systems, and devices for radio resource management (RRM) measurement and reporting for license assisted access (LAA) cells operating in unlicensed or shared frequency spectrum are described. A user equipment (UE) may receive an RRM measurement configuration including a channel occupancy parameter for measuring neighbor cells of a shared frequency band. The channel occupancy parameter may be used to determine a channel occupancy metric that may be sent to a base station for cell selection. The channel occupancy metric may include an averaged or filtered received signal strength and may be reported for serving cells and / or intra-frequency neighbor cells. A base station may further configure a UE with a discovery reference signals (DRS) measurement timing configuration (DMTC), which may include an extended DMTC search window. The UE may search for DRS transmissions from neighbor cells according to the DMTC.
Owner:QUALCOMM INC
A D2D resource allocation method based on multi-agent deep reinforcement learning
ActiveCN109729528AOptimize transmit powerGuaranteed communication qualityConnection managementHigh level techniquesSystem capacityFrequency spectrum
The invention discloses a D2D resource allocation method based on multi-agent deep reinforcement learning, and belongs to the field of wireless communication. The method comprises the following steps:firstly, constructing a heterogeneous network model of a cellular network and D2D communication shared spectrum; establishing a signal to interference plus noise ratio (SINR) of a D2D receiving userand an SINR of a cellular user based on the existing interference, respectively calculating unit bandwidth communication rates of a cellular link and a D2D link, and constructing a D2D resource allocation optimization model in a heterogeneous network by taking the maximum system capacity as an optimization target; For the time slot t, constructing a deep reinforcement learning model of each D2D communication pair on the basis of the D2D resource allocation optimization model; And respectively extracting respective state feature vectors from each D2D communication pair in the subsequent time slot, and inputting the state feature vectors into the trained deep reinforcement learning model to obtain a resource allocation scheme of each D2D communication pair. According to the invention, spectrum allocation and transmission power are optimized, the system capacity is maximized, and a low-complexity resource allocation algorithm is provided.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Channel feedback reporting for shared frequency spectrum
ActiveUS20160330630A1Optimization mechanismAdditional componentError prevention/detection by using return channelAssess restrictionFrequency spectrumCarrier signal
Methods, systems, and devices are described for wireless communication. A device may use enhanced reporting mechanisms to support control information reporting on shared spectrum. In some cases, a device may utilize enhanced component carriers (eCCs) for data transmissions. In one example, the device may transmit control information (e.g., ACK / NACK, CSI, etc.) to a corresponding device using a CCA exempt transmission (CET). In another example, a device may report control information quasi-periodically. For instance, a device may be assigned a specified interval and a control feedback window for reporting control information (e.g., CSI). The window may provide a duration prior and subsequent to the specified interval during which a UE may transmit control information. For example, the device may perform a CCA reserving the channel for a duration that does not include the specified interval but may transmit feedback information based on determining the specified interval falls within the assigned window.
Owner:QUALCOMM INC
Method, equipment and system for sharing frequency spectrum resource
ActiveCN101635928AAchieve sharingGuaranteed network coverageNetwork planningFrequency spectrumStatic mode
The embodiment of the invention discloses a method, equipment and a system for sharing a frequency spectrum resource, which relate to the field of wireless communication and are used for realizing the sharing of a dynamic frequency spectrum resource among different mobile honeycomb networks on the basis of ensuring the network coverage and the service continuity. The method comprises the following steps: dividing the frequency spectrum resource into a basic frequency band and a dynamic frequency band, wherein the basic frequency band is used for ensuring the network coverage and the service continuity of at least two networks of the sharing frequency spectrum resource; fixedly distributing the basic frequency band in the frequency spectrum resource to at least two networks in a static mode, and distributing the dynamic frequency band in the frequency spectrum resource to at least two networks in a dynamic mode; and transmitting the frequency spectrum resource distribution information of the basic frequency band and the frequency spectrum resource distribution information of the dynamic frequency band to a base station so as to be used for the frequency spectrum resource allocation of the base station. The invention is suitable for mobile honeycomb networks, such as GSM, UMTS, LTE, CDMA2000, WiMAX and the like.
Owner:HUAWEI TECH CO LTD
Use of Licensed Shared Spectrum in a Radio Access Network Where Signal Propagation is Unknown
For controlling a wireless transmission of a network element of a radio access network where signal propagation is unknown, wherein the network element is configured to inhibit use of a licensed shared access spectrum, interference levels in predefined reservation zones are determined, which are introduced by the network element when using the licensed shared access spectrum. It is checked whether or not the interference levels violate agreed interference levels in the predefined reservation zones of the licensed shared access spectrum, and the network element is configured to allow use of the licensed shared access spectrum in case the interference levels do not violate the agreed interference levels in the predefined reservation zones.
Owner:RPX CORP
Method and apparatus for transmitting LTE waveforms in shared spectrum by carrier sensing
A method of operating a long term evolution (LTE) communication system on a shared frequency spectrum is disclosed. A user equipment (UE) is initialized on an LTE frequency band. A base station (eNB) monitors the shared frequency spectrum to determine if it is BUSY. The eNB transmits to the UE on the shared frequency spectrum if it is not BUSY. The eNB waits for a first time if it is BUSY and directs the UE to vacate the shared frequency spectrum after the first time.
Owner:TEXAS INSTR INC
Universal broadband broadcasting
A universal broadband broadcasting service is provided. A spectrum-sharing database stores attributes associated with a shared spectrum, a policy controller controls access to the shared spectrum by broadcast service entities, and a gateway receives IP multicast traffic from the broadcast service entities and communicates the IP multicast traffic to a broadcast single frequency network.
Owner:ROHDE & SCHWARZ GMBH & CO KG
Wireless resource management system and method of implementing frequency spectrum sharing
ActiveCN101141771AReduce the amount of information transmittedImprove acceleration performanceRadio/inductive link selection arrangementsNetwork planningAccess networkWireless resource management
The present invention discloses a wireless resource management system for realizing the frequency spectrum sharing. The system comprises a cooperation control unit for determining frequency spectrum sharing strategy according to the frequency spectrum sharing request which is accessed in a network and / or each running statistical information which is accessed in a network and the frequency spectrum using condition; an accessing network frequency spectrum sharing control unit communicated with the cooperation control unit is used for matching the different local wireless resource management accessed in the network to make the accessing network share the frequency spectrum resource according to the frequency spectrum sharing strategy determined by the cooperation control unit. The present invention also discloses a wireless resource management method for realizing the frequency spectrum sharing. With the present invention, the frequency spectrum sharing between different wireless accessing technologies and wireless accessing networks can be simply and effectively realized, and the utilization ratio of the frequency spectrum resource can be improved.
Owner:HUAWEI TECH CO LTD
Techniques for managing transmissions of reference signals
A network may use enhanced sounding reference signal (SRS) transmission techniques to support reference signal transmissions over shared spectrum. For example, a wireless device may receive an uplink grant and an indicator. The uplink grant may include an uplink resource allocation to the wireless device and the indicator may alert the device of a forthcoming reference signal transmission. The wireless device may use the uplink grant and the indicator to determine a reference signal transmission period relative to the resources assigned in the uplink grant. For example, the wireless device may determine that the reference signal transmission period is prior to, during, or subsequent to the uplink transmission period. In some cases, a wireless device may be aperiodically or periodically scheduled for reference signal transmissions.
Owner:QUALCOMM INC
Single user detection user equipment
A time division duplex using code division multiple access user equipment receives a plurality of data signals in a time slot. Each data signal experiences a similar channel response. The user equipment receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based on in part the estimated channel response. A spread data vector is determined based on in part a fast fourier transform (FFT) decomposition of a circulant version of the channel response or channel correlation matrix. The spread data vector is despread to recover data from the matrix.
Owner:INTERDIGITAL TECH CORP
Cell switching for discontinuous transmission (DTX) in shared spectrum
ActiveUS20170332288A1Increase coverageImprove indoorPower managementError preventionRadio access technologyFrequency spectrum
Techniques for co-existence between wireless Radio Access Technologies (RATs) are disclosed. During an active period of a Discontinuous Transmission (DTX) communication pattern, a first signal may be transmitted during a first subframe and a second signal may be transmitted during a second subframe, while during an inactive period the first signal may be transmitted during the first subframe and the second signal may be omitted during the second subframe. Retransmission of one or more packets may take place over a subset of less than all retransmission opportunities based on the DTX communication pattern. A Secondary Cell (SCell) may be reconfigured as the Primary Cell (PCell) and the PCell may be reconfigured as the SCell for one or more access terminals based on a load balancing condition or a channel selection condition.
Owner:QUALCOMM INC
Shared Spectrum Access for Broadcast and Bi-Directional, Packet-Switched Communications
ActiveUS20160057504A1Stay connectedAnalogue secracy/subscription systemsBroadcast service distributionRadio access technologyFrequency spectrum
Techniques are disclosed relating to spectrum sharing between different radio access technologies. In some embodiments, a broadcast base station is configured to wirelessly broadcast audio and video data to a plurality of broadcast receiver devices using a particular frequency band. In these embodiments, the broadcast base station is configured to discontinue broadcasting in the particular frequency band during a scheduled time interval, to enable one or more cellular base stations to perform bi-directional packet-switched wireless data communications using the particular frequency band.
Owner:COHERENT LOGIX
Coexistence management for cooperative transceiving in a shared spectrum
ActiveUS20080299987A1Radio/inductive link selection arrangementsWireless commuication servicesComputer hardwareFrequency spectrum
A wireless interface circuit transceives packetized data between a host module and a first external device using a frequency spectrum, wherein the packetized data is formatted in accordance with a first wireless communication protocol and wherein the packetized data includes a request from the first external device to use at least a potion of the frequency spectrum for communication via a second wireless communication protocol. A coexistence management module generates a wireless interface schedule that includes a least one contention free period reserved for communication via the second wireless communication protocol, and generates schedule data, based on the wireless interface schedule, for transmission to a plurality of external devices including the first external device.
Owner:AVAGO TECH INT SALES PTE LTD
Measurement method in unlicensed spectrum and equipment
InactiveCN107371168AImprove service qualityEasy to useNetwork planningFrequency spectrumUplink transmission
The invention discloses a measurement method in an unlicensed spectrum and equipment which are used for solving a problem that the network cannot accurately schedule data transmission of LTE (Long Term Evolution) UE on an unlicensed carrier because the LTE UE needs to share the spectrum in a time division manner with other wireless communication technologies on the unlicensed spectrum. The measurement method comprises the steps that the UE performs LBT on the unlicensed spectrum when determining that uplink transmission needs to be performed and calculates an LBT result; and the UE sends reporting information related with the LBT result calculated by the UE when determining that a reporting condition is met. The UE sends the reporting information related with the LBT result calculated by the UE to network equipment so as to enable the network equipment to determine whether the UE is suitable to work in the corresponding unlicensed spectrum cell or not according to the LBT result calculated by the UE.
Owner:CHINA ACAD OF TELECOMM TECH
Systems and methods for coexistence management of shared spectrum access
Systems and methods for managing coexistence between a plurality of radio networks configured to operate over a shared spectrum are disclosed. These may include gathering a plurality of data about each of the plurality of radio networks; determining a load level associated with each of the plurality of radio networks; determining a bandwidth allocation value, the bandwidth allocation value based at least on the load level; and allocating a plurality of channel slices among the plurality of radio networks.
Owner:FUJITSU CONNECTED TECH LTD
Frequency spectrum sharing method for GSM (Global System for Mobile Communication) system and LTE (Long Term Evolution) system and systems thereof
ActiveCN102118758AReduce occupancy pointsReduce constraintsNetwork traffic/resource managementCriteria allocationFrequency spectrumPhysical control
Owner:ZTE CORP
Method and device for distributing spectrum resources
InactiveCN102651869AMeet the demand for large bandwidthWill not cause interferenceNetwork planningHigh rateFrequency spectrum
The invention discloses a method and a device for distributing spectrum resources. The method for distributing the spectrum resources comprises the following steps of: dividing spectrum resources which can be used into basic spectrum resources and shared spectrum resources, monitoring the shared spectrum resources when the capacity of wireless access equipment needs to be expanded, and also using the idle shared spectrum resources. By the method disclosed by the invention, all the spectrum resources distributed to a wireless access technology to which a plurality of wireless access equipment belongs for use are flexibly shared by the wireless access equipment, and the condition that continuous business service is provided to a terminal is ensured by the wireless access equipment through the basic spectrum resources. Meanwhile, a business with high rate is also provided by the time-sharing shared use of the shared spectrum resources, and the requirement of the business to large bandwidth is met. Moreover, the phenomenon of interference between the wireless access equipment cannot be caused.
Owner:ZTE CORP
Channel assignment in shared spectrum based on network coverage overlap and network weights
ActiveUS20180132112A1Facilitate communicationCriteria allocationNetwork planningFrequency spectrumDistributed computing
Aspects of the present disclosure relate to methods and apparatus for assigning channels to networks in a group based on network coverage overlap and network weights. An example method generally includes determining whether channels are available for allocation at each network represented by a node in a network overlap graph, wherein each node in the graph is associated with an assigned channel in a shared spectrum, and for each network in the graph for which channels are available for allocation, identifying channels that are available for allocation to the network, and assigning at least one of the available channels to the network based, at least in part, on a weighting associated with the network.
Owner:QUALCOMM INC
Coexistence management for cooperative transceiving in a shared spectrum
ActiveUS7983216B2Radio transmissionWireless commuication servicesComputer hardwareWireless communication protocol
Owner:AVAGO TECH INT SALES PTE LTD
Reservation coordination in a shared communication medium
InactiveUS20160353482A1Increase coverageImprove indoorNetwork topologiesConnection managementRadio access technologyTelecommunications
Techniques for reservation coordination and related operations in shared spectrum are disclosed. Communication over a communication medium may be performed in accordance with a first Radio Access Technology (RAT) and in accordance with a communication pattern of active periods and inactive periods of communication. A channel reservation message may be transmitted in accordance with a second RAT to reserve the communication medium for one of the active periods. The channel reservation message may be transmitted randomly at a plurality of successive burst slots. In addition or as an alternative, one or more medium access parameters associated with the channel reservation message may be set to a value below a threshold associated with aggressive contention.
Owner:QUALCOMM INC
Apparatus and Method for Communication
InactiveUS20130107116A1Picture reproducers using cathode ray tubesSignal allocationTransceiverFrequency spectrum
Apparatus and method for communication are provided. The solution includes controlling a transceiver to determine free frequency blocks on a shared spectrum and controlling a transceiver to map synchronization control channels, downlink and uplink physical control channels, physical broadcast channel and random access channel on found free frequency blocks.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
Methods and apparatus for adapting transmitter configuration for efficient concurrent transmission and radar detection through adaptive self-interference cancellation
ActiveUS20150296413A1Error preventionNetwork traffic/resource managementSelf interferenceFrequency spectrum
Certain aspects of the present disclosure relate to adapting transmitter configuration for efficient concurrent primary user detection through adaptive self-interference cancellation. A wireless transmitting device may schedule a transmission in a shared spectrum. The device may scan at least a portion of the shared spectrum during the transmission to receive a signal. Interference caused by the transmission may he cancelled from the received signal using self-interference cancellation circuitry. The device may determine whether the received signal indicates usage by a primary user of the shared spectrum. In an aspect, the transmission may be a SISO transmission. In another aspect, carrier aggregation may be used for the transmission and a potential carrier may be subject to primary user detection. The device may determine a self-interference cancellation complexity for a combination of carriers including the potential carrier, and may select one or more carriers for aggregation based on the self-interference cancellation complexity.
Owner:QUALCOMM INC
Spectrum Sharing Method Based on Auction Theory and Compensation Incentives
ActiveCN102291722ASelf-enforcingFairNetwork traffic/resource managementNetwork planningCommunications systemFrequency spectrum
The invention aims at providing a spectrum sharing method based on auction theory and compensation stimulation in a cognitive radio system. The method aims at primary and secondary user spectrum sharing problems, the cooperative relationship between secondary users is introduced on the basis of a simplified video channel generator (VCG) auction model, in addition, a currency compensation stimulation principle is utilized for building an expansive non-cooperative game model including negotiation and consulting links. The cooperative relationship between the secondary users is discussed in a non-cooperative game framework by the game model, the game is carried out through the specific cooperative strategy, the decision mode characteristic of automatic implementation of the non-cooperative game model is realized, and the fairness characteristic of an oligarch combination model is also realized. In addition, because the adopted communication system model is the auction model, the primary users can adopts preserved bandwidth measures for ensuring that the self performance is protected from being influenced by secondary user spectrum sharing, and the spectrum shearing environment between the primary users and the secondary users is better ensured.
Owner:NANJING UNIV OF POSTS & TELECOMM
Spectrum sharing in the unlicensed band
Owner:MICROSOFT TECH LICENSING LLC
Method and apparatus of spectrum utilization in a wireless cellular environment
The present invention discloses a method of spectrum utilization in a wireless cellular environment with coverage of at least two wireless networks and a related apparatus. The method includes: determining a RSRP threshold; detecting, by a small-cell base station, RSRPs of at least one large-cell base station; and comparing the highest one of the detected RSRPs with the determined RSRP threshold, adopting a separate spectrum mode if the highest one of the detected RSRPs exceeds the determined RSRP threshold, and otherwise, adopting a shared spectrum mode. According to the method and apparatus of the present invention, a separate spectrum mode is adopted when the small-cell base station is relatively close to the large-cell base station to decrease interferences between the small-cell base station and large-cell base station and to increase spectrum usage efficiency in the wireless cellular environment with coverage of at least two wireless networks, however, a shared spectrum mode is adopted when the small-cell base station is relatively far from to the large-cell base station to realize sharing spectrum and increase spectrum usage efficiency in the wireless cellular environment with coverage of at least two wireless networks.
Owner:NTT DOCOMO INC
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