|| List of recent Base Station-related patents
| Method and system to improve link budget of a wireless system|
A method and system to improve the link budget of a wireless system using fast hybrid automatic repeat request (harq) protocol. In one embodiment of the invention, the medium access control (mac) logic in a base station determines whether the quality of the communication link with a mobile station is bad.
| Traffic condition monitoring system, method, and storage medium|
A traffic condition monitoring system, provided in a base station installed by a side of a road for monitoring a traffic condition based upon communication signals transmitted from mobile terminals in a plurality of vehicles traveling on the road, includes a receiver part operable to receive the communication signals transmitted from the mobile terminals in the respective vehicles to output received signals, a speed/direction estimation part operable to estimate traveling speeds and traveling directions of the respective vehicles based upon the received signals, and a traffic condition analysis part operable to determine effective traveling speeds of the respective vehicles in each traveling direction, to calculate an average traveling speed of a group of vehicles in each traveling direction, and to analyze a traffic condition in each traveling direction based upon the average traveling speed of the group of vehicles in each traveling direction.. .
| Networked energy management|
A network-based energy management system may identify an area that exhibits a need for electrical energy. The network-based energy management system may also identify an area that exhibits an ability to provide electrical energy.
| Communication system, apparatus and method|
A communication system, apparatus and method are provided according to embodiments of the present invention. The communication system includes: a base band unit (bbu), at least two antennas and at least two radio-frequency (rf) units, where the at least two rf units are connected with the bbu respectively; and each of the antennas is connected with at least two rf units respectively, so that a signal received from a same sector by an antenna is sent to the bbu via different rf units.
| Radio terminal apparatus, communication control apparatus, and radio communication method|
A radio terminal apparatus is operable in a discontinuous communication mode in which at least one of transmission and reception for communicating with a radio base station is performed periodically and discontinuously. The radio terminal apparatus includes a measurement unit configured to measure time from when download of data via the radio base station is completed to when download of the next data is requested in response to a user operation, a transmitting unit configured to transmit time information on the time measured by the measurement unit to the radio base station, and a radio control unit configured to acquire, from the radio base station, a parameter indicating at least one of a transmission period and a reception period that is determined on the basis of the time information, and control the discontinuous communication mode..
| System and method for locating a cellular communication device|
There is discussed a location system for locating the position of a mobile communications device that communicates with a communication network using wireless signals. The location system includes a receiver which detects a wireless signal transmitted between the mobile communications device and a base station forming part of the communication network, and a processing means which processes the detected wireless signal to extract identification information for the mobile communications device.
| Determination of ue location in a cell|
A radio base station and a method therein are provided for determining where in a cell a ue, being served by the radio base station, is located. The method includes receiving at least a first and subsequently a second reference signal received power (rsrp) value from the ue, and comparing the received first and second rsrp values.
| Method and apparatus for performing communication in wireless communication system|
A method for performing communication by a cellular base station in a wireless communication system is provided. The method includes performing channel contention for occupying a channel of an unlicensed band, if the channel of the unlicensed band is occupied, the cellular base station transmits a first message including information about a time period in which the channel of the unlicensed band is usable, to at least one first user equipment (ue) that performs communication in the channel of the unlicensed band using a first communication scheme, and communicating with a second ue using a second communication scheme different from the first communication scheme in the channel of the unlicensed band during a time period corresponding to the time period information.
| Base station controller selection for a roaming radio base station and method of operating the same|
A master monitor/control (“m/c”) unit selects a base station controller (“bsc”) to serve a mobile radio base station (“rbs”). In one embodiment, the master m/c unit is configured to monitor and assess performance parameters of a communications link between the mobile rbs and a serving bsc and alternative communications links between the mobile rbs and a plurality of other bscs.
| Apparatus, systems, and methods for providing interworking gateway|
Systems and methods are provided that allow inter-working between communication networks for the delivery of service to mobile nodes. A gateway is provided that communicates with a femto cell to extend service to an area that otherwise does not receive coverage from a service provider.
| Methods and devices for deriving a permanent ue identifier|
Network node and base station and methods therein for deriving a permanent identifier, such as an imsi, for a ue in a cellular communication system of lte type. The solution involves the use of a request for an inter-rat handover, where the request comprises a temporary identifier of a process associated with the ue of which a permanent identifier is to be derived.
| Offloading mobile applications to base stations|
A method for mobile computing includes configuring a group of two or more base stations in a vicinity of a user equipment (ue) in a cellular communication network to serve as a femtocloud in support of application programs running on the ue. A femtocloud control program runs on a platform associated with the network.
| Methods, systems, and computer readable media for reducing wi-fi scanning using cellular network to wi-fi access point mapping information|
The subject matter described herein includes methods, systems, and computer readable media for reducing wi-fi scanning using cellular network to wi-fi access point mapping information. In one exemplary method, a mobile communications device receives wi-fi and cellular signals and creates or obtains a database of mappings between wi-fi access points and cellular network information.
| Cell type information sharing between neighbor base stations|
The present invention relates to a method and arrangement for cell type information sharing between neighbour base stations in a telecommunications system. One embodiment comprises informing a second radio base station serving a second cell and having a neighbour relation with a first cell served by a first base station, of at least the cell type of the first cell.
| Methods for assisting mobile communication devices in connecting to an access point (ap), and mobile communication devices and base stations using the same|
A mobile communication device is provided with two wireless modules and a controller module. The first and second wireless modules perform wireless transmission and reception using a telecommunication technology and an srw technology, respectively.
| Base station apparatus, base station control method, and base station control system|
A base station apparatus includes plural functional blocks made up of hardware and formed according to function; and a processor that that is configured to determine based on an input/output state of a control signal and of user data performed by the functional blocks and a state of data processing, an increase/decrease or a replacement of the functional blocks and output a determination result to an external destination.. .
| Methods of switching off power of base stations within cellular networks by using message passing, and base stations and cellular network systems using the methods|
A method of determining whether to switch off a base station's own power in the base station within a cellular network may comprise: receiving terminal messages having real number values from terminals within cell coverage of the base station; calculating real number values of base-station messages individually regarding the terminals based on the received terminal messages; transmitting the base-station messages having the calculated real number values individually to the terminals; repeatedly performing the receiving, the calculating, and the transmitting until the calculated real number values of the base-station messages are converged to constant values; when the real number values of the base-station messages are converged, calculating a base-station message convergence value, which is one real number value regarding the terminals, based on the converged real number values of the terminal messages; and/or determining whether to switch off the base station's own power based on the base-station message convergence value.. .
| Mobile communication system, quality control method, and monitoring control device|
A mobile communication system includes: a content server configured to accumulate a content; a wireless base station device configured to receive the content sent from the content server; a terminal device configured to receive the content wirelessly sent from the wireless base station device; and a monitoring control device configured to: control delivery of the content to the terminal device over the content server, and send to the terminal device, when a quality of experience (qoe) for a user utilizing the terminal device due to delivery of the content, the qoe being predicted in accordance with sending of a first delivery request for the content from the terminal device, does not meet a given condition, information on a clock time or a place in which a new predicted qoe meets the given condition.. .
| Handover method and apparatus in wireless communication system|
The present disclosure provides a method for correcting an error caused by hyper frame number (hfn) and packet data convergence protocol sequence number (pdcp sn) mismatch between a user equipment and base station when the user equipment fails in handover between cells in a wireless communication system. In addition, the present disclosure provides a handover procedure for a user equipment performing handover from a macro cell to a closed subscriber group (csg) cell shared by multiple operators in a wireless communication system.
| Method for transmission of alarm messages to subscriber terminals in radio communications system|
Alarm messages are transmitted to subscriber terminals of a radio communication system by signalling the alarm presence through a control channel to the subscriber terminals by at least one base station of the radiocommunication system using at least one system information item. Upon reception of the system information item by the subscriber terminals, the subscriber terminals transmit at least one respective recorded alarm signal..
| Antenna system of mobile communication base station|
The present invention is an antenna system of a mobile communication base station, comprising: a signal separation unit which is arranged within a radome of an antenna, and which separates a synthetic signal of a wireless signal transmitted from a main system of a base station through a feeder cable, a direct current power signal and a control signal having a preset format for controlling the antenna, in such a manner that the direct current power signal and the control signal are output by being separated from the wireless signal and the wireless signal is provided to an antenna unit; and equipment to be remotely controlled having a modem for receiving the direct current power signal and the control signal output from the signal separation unit and using the direct current power signal as an operating power and converting the control signal into a format which is preset to be internally recognizable in the radome of the antenna, the equipment to be remotely controlled performing an antenna control operation according to a control signal.. .
| Method and device for suggesting recording information and acquiring positional information to allow mdt technology to be effectively utilized in a mobile communication system|
A method of measuring channel information using a terminal in a communication system, according to an embodiment of the present invention, includes the steps of: receiving channel measurement setup information from a base station; entering an idle mode in the state of communication with the base station; measuring information indicating according to the channel measurement setup information; and transmitting a signal including the measured information to the base station. In addition, a terminal for measuring channel information according to another embodiment of the present invention includes: a transmitting/receiving unit for receiving channel measurement setup information from a base station; and a control unit for controlling the terminal so that the terminal enters an idle mode in the state of communication with the base station and measures information indicating according to the channel measurement setup information, wherein the transmitting receiving unit transmits a signal including the measured information to the base station.
| Spectrum sensing|
Provided are methods, corresponding apparatuses, and computer program products for performing spectrum sensing on a spectrum. A method comprises receiving, at a user equipment, information regarding performing spectrum sensing from a base station; performing, based upon the information, the spectrum sensing by the user equipment in an idle mode; and transmitting, by the user equipment out of the idle mode, to the base station a result of the spectrum sensing.
| Method and apparatus for determining statistics for direction of departure|
A method (200) for determining statistics for the direction of departure between a ue and a base station. The method (200) comprises receiving measurement reports from the ue on the strength of signals in the ue from one or more of the cells served by the base station, and for one pair of cells served by the base station, determining (220) whether or not the ue was limited in measuring the strength of the signals, and, if the ue was limited, determining (230) said statistics using the signal strengths from the cells in the pair, the cells' antenna gain towards the ue and the maximum difference between the signal strengths from the cells in the pair, and if the ue was not limited, determining (225) said statistics using the signal strengths from the cells in the pair and differences in the cells' antenna gain towards the ue..
| Wireless base station, wireless communication system, and transmission power control method|
A second transmission power control different from a first transmission power control being performed on a first wireless terminal connected to a wireless base station without a relay station is performed on a second wireless terminal connected to the wireless base station through the relay station.. .
| Location-specific wlan information provision method in cell of wireless communication system|
A data communication method of a terminal of a mobile communication system is provided. The data communication method includes transmitting a first message including location-related information of the terminal to a base station, receiving a second message including a wireless local area network (wlan) access point (ap) list corresponding to the location-related information of the terminal, and scanning, if the wlan ap list includes at least one wlan ap, for wlan aps included in the wlan ap list..
| Base stations, mobile communication devices, and methods for assisting a mobile communication device in connecting to an access point (ap) when camped on or connected to a base station|
A base station providing a cellular access service in a cell coverage includes a wireless module and a controller module. The wireless module performs wireless transmissions and receptions to and from a mobile communication device using a telecommunication technology.
| Method and device for supporting group handover|
The method and the device for supporting group handover are disclosed. The method supporting group handover is provided, which is applied to ue in communication with network via a rn, including: a base station s-denb switching rn to a base station t-denb; and said s-denb switching ue served by said rn to said t-denb; wherein the mme serving said rn and the mme serving ue served by said rn are the same.
| Method and apparatus for determining a backoff factor value in a mobile communication system|
In a mobile communication system, a serving base station receives, from at least one neighboring base station, beamforming information including information about a frame period in which data is transmitted using frequency band-specific beamforming, determines, based on the received beamforming information, whether a beamforming transmit mode of the at least one neighboring base station is a nulling mode in which null data is transmitted to at least one of mobile terminals included in a cell of the serving base station, determines whether a response signal received from the at least one mobile terminal is generated by an interference signal of the at least one neighboring base station, if the beamforming transmit mode of the at least one neighboring base station is the nulling mode, and determines whether to update a backoff factor value based on a result of the determination.. .
| Communication system, communication method, base station apparatus, and mobile station apparatus|
In a communication system 1 in which a plurality base station apparatuses 100-j are arranged such that the entirety or part of cells of the plurality of base station apparatuses 100-j overlaps with one another, a master base station apparatus 100-1 calculates transmission weighting coefficients vj of the base station apparatuses 100-j and reception weighting coefficients uk of mobile station apparatuses 200-k such that directions of equivalent channels of interference signals received by the mobile station apparatuses 200-k connected to the base station apparatuses 100-j become orthogonal to the reception weighting coefficients by which the mobile station apparatuses 200-k multiply their respective reception signals. The base station apparatuses 100-j transmit the reception weighting coefficients uk to the mobile station apparatuses 200-k connected thereto, and the mobile station apparatuses 200-k perform a reception process by multiplying their respective reception signals including the interference signals by the reception weighting coefficients uk..
| Method and apparatus for transmitting downlink control information|
Examples of the present disclosure provide a method for transmitting downlink control information to effectively support the two transmission modes of the e-pdcch. The base station configures the localized e-pdcch resource and the distributed e-pdcch resource.
| Method for performing device-to-device communication in wireless access system and apparatus for same|
The present invention discloses a method for performing device-to-device communication in a wireless access system supporting the device-to-device communication, and an apparatus for same. More specifically, the method comprises the steps of: a first device receiving from a base station resource allocation information for device-to-device communication with a second device; the first device transmitting to the second device an initial signal for device-to-device communication through a resource that is allocated; the first device scanning a response signal which is transmitted from the second terminal; and the first device performing the device-to-device communication with the second device when the first device receives the response signal from the second device, wherein the initial signal comprises a first reference signal for matching synchronization between the first and second devices, and a second reference signal for estimating a channel between the first device and the second device..
| E-pdcch mapping, and method and apparatus for transmission and reception in wireless communication system|
The present invention relates to e-pdcch (extended pdcch) mapping, and a method and an apparatus for transmission and reception in a wireless communication system. The e-pdcch mapping and the transmission method according to one embodiment of the present description, includes the steps of: enabling a base station to perform distributed resource allocation for two or more regions to which the e-pdcch is transmitted; and mapping the e-pdcch to be transmitted to a user terminal by applying a mapping rule to resources of one or more regions among the two or more regions.
| Precoding matrix set quality measurement and reporting|
The invention relates to methods for determining the interference variability of a precoding matrix set, and the use of same for purposes of scheduling and precoding matrix set selection. The precoding matrix set used by an interferer base station is evaluated by the mobile terminal which experiences the intercell interference from the interferer base station.
| Radio communication system, radio base station apparatus, user terminal and radio communication method|
To reduce overhead of csi feedback without decreasing throughput in applying comp transmission, a radio communication method of the invention is characterized in that a radio base station apparatus determines so that content of csi to transmit to a serving cell to perform comp transmission as feedback is different from content of csi to transmit to a coordinated cell as feedback, and notifies a user terminal of the content of csi, and that the user terminal generates feedback information based on the content of csi notified from the radio base station apparatus, and transmits the feedback information to radio base station apparatuses of cells that perform coordinated multi-point transmission.. .
| Radio communication system, radio base station apparatus, user terminal and radio communication method|
To reduce overhead of csi feedback without decreasing throughput in applying comp transmission, a radio communication method of the invention is characterized by including, in a user terminal measuring quality information for each of cells to perform coordinated multi-point transmission, and notifying a radio base station apparatus of the quality information, in the radio base station apparatus calculating a quality difference between the cells to perform coordinated multi-point transmission, by using the quality information for each the cells from the user terminal, determining granularity of inter-cell channel state information for each of the cells based on the quality difference, and notifying the user terminal of the granularity, and, in that the user terminal generating inter-cell channel state information for each of the cells according to the granularity from the radio base station apparatus, and transmitting the inter-cell channel state information for each of the cells to radio base station apparatuses of cells to perform coordinated multi-point transmission.. .
| Method and apparatus for transceiving a downlink control channel in a wireless communication system|
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving a downlink control channel. According to one embodiment of the present invention, a method in which a base station transmits a downlink control channel to a terminal in a wireless communication system comprises the steps of: transmitting one or more enhanced-physical downlink control channels (e-pdcchs) within a resource region allocable for an e-pdcch; and transmitting e-pdcch allocation resource information for the one or more e-pdcchs to the terminal.
| Communication control method, base station, and user terminal|
A communication control method in a mobile communication system, comprises: a step a of transmitting, from a first base station, a first synchronization signal at a first frequency band in the center of a particular carrier, the first synchronization signal being for use to establish synchronization; and a step b of transmitting, from the first base station, a second synchronization signal in a second frequency band different from the first frequency band within the particular carrier, the second synchronization signal being for use to establish synchronization.. .
| Method for allowing base station to support device-to-device (d2d) communication in wireless communication system, and method for allowing d2d device to efficiently transmit d2d communication request signal|
Method for supporting device-to-device (d2d) communication by a base station includes: receiving first signals for requesting d2d communication from a plurality of first d2d devices; identifying number of d2d devices which have requested the d2d communication based upon the first signals; allocating resources for transmitting a second signal for requesting d2d communication between the d2d devices based upon number of the plurality of first d2d devices which have been identified; and transmitting information on the allocated resources to the plurality of first d2d devices, wherein the resource allocation can be performed to distinguish combinations of an index of a d2d device, which transmits the second signal, and an index of a d2d device, which receives the second signal, from each other with respect to at least one of time, frequency, code, and space domains with respect to the plurality of first d2d devices.. .
| Method and apparatus for controlling inter-cell interference in wireless communication system|
A method for a base station transmitting transmission power of a subframe to a user equipment, according to one embodiment of the present invention, comprises a step of transmitting downlink control information to the user equipment through a physical downlink control channel (pdcch), wherein the transmission power information of the subframe is indicated by information related to the pdcch, and a value of the information related to the pdcch can be decided based on a predetermined mapping relationship between the transmission power information and the value of the information related to the pdcch.. .
| Method and corresponding apparatus for uplink control channel power control|
Embodiments of the present invention provide a method for power control of a uplink control channel in a coordinated multi-point transmission system. The method comprises: performing the uplink control channel power control based on measured pathloss from a single reception point to the user equipment in a scenario of single-point reception of the uplink control channel; performing the uplink control channel power control by reducing uplink control channel transmission power of the user equipment to thereby reduce inter-cell interference incurred by multi-reception-point reception combining gain in a scenario of multi-point reception of the uplink control channel.
| Wireless communication system, base station device, mobile station device, and wireless communication method|
A terminal apparatus communicates with a base station apparatus using a plurality of downlink subbands and a plurality of uplink subbands. The terminal apparatus receives, in a downlink subband, response information for an uplink data transmitted in an uplink subband in accordance with setting information which is received from the base station apparatus and indicates a relationship between the uplink subband and the downlink subband used to receive the response information, where the uplink subband being one of the plurality of uplink subbands, and where the downlink subband being one of the plurality of downlink subbands..
| Integrated circuit for controlling a process|
Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance.
| Cross correlation nulling for interference resolution|
Systems and methods generate corrected channel transfer functions by cross-correlation nulling. In an example system, a first receiver node (which may be a wireless base station) receives first expected reference signal information associated with an interfering transmitter node (which may be a wireless user equipment) and creates a correction matrix based on the first expected reference signal information associated with the interfering transmitter node and on second expected reference signal information associated with an intended transmitter node.
| Power control method and apparatus|
Embodiments of the present invention disclose a power control method and apparatus, relate to the field of wireless communications, and are invented for reducing power pressure of an air interface of a base station and ensuring a stable network environment. The method includes: determining whether received total wideband power (rtwp) of an air interface exceeds a set first congestion threshold value; when the rtwp of the air interface exceeds the set first congestion threshold value, sending a congestion indication to a radio network controller (rnc), where the congestion indication is used for indicating that the rnc is forbidden from up-regulating a target signal-to-interference ratio (sir); receiving a target sir sent by the rnc; down-regulating the target sir sent by the rnc; and notifying, based on the down-regulated target sir, a user equipment (ue) to reduce transmit power.
| Method for transmitting an uplink signal and feedback information, and relay apparatus using the method|
The invention relates to a method of transmitting an uplink signal at a communication apparatus in a wireless communication system. The wireless communication system can receive pattern information of downlink subframes for a base station (bs)-to-the communication apparatus transmission as a bitmap; receive resource block (rb) information associated with a control channel for the bs-to-the communication apparatus transmission; receive the control channel from a fourth orthogonal frequency division multiplexing (ofdm) symbol of the downlink subframe n corresponding to a downlink subframe index n based on the rb information and the pattern information, the downlink subframe n comprising at least one downlink subframe other than downlink subframe 0, downlink subframe 4, downlink subframe 5 and downlink subframe 9; receive a data channel in the downlink subframe n; and transmit feedback information associated with the data channel to the bs via an uplink subframe for the communication apparatus-to-the bs transmission..
| Radio communication system, mobile terminal, base station, and storage unit for mobile terminal|
A mobile terminal transmits a first message to a hybrid cell base station, the first message indicating the presence of the mobile terminal trying to establish a connection, the first message containing information unique to the mobile terminal. The hybrid cell base station receives the first message, and transmits a first response message in response to the first message to the mobile terminal..
| Systems and methods for scheduling of data packets based on delay tolerance of applications|
A base station, system, method, and computer program product are disclosed for transmitting data packets received by the base station. According to one aspect, the base station includes a first buffer configured to store data packets received by the base station, a second buffer configured to store data packets that are scheduled for transmission by the base station, and a computer processor, operatively coupled to the first buffer and the second buffer.
| Uplink demodulation reference signals in advanced wireless communication systems|
User equipment is provided to communicate with a base station. The user equipment includes a transceiver.
| Apparatus and method for acquiring synchronization in cooperative communication system|
A method for acquiring synchronization by a serving base station (bs) in a cooperative communication system includes performing a medium access control service data unit (mac sdu) synchronization process with a data gate way (gw) and at least one cooperative communication cell member bs, determining a first internet protocol (ip) packet which is received by the at least one cooperative communication cell member bs after performing the mac sdu synchronization process, and performing an ip packet transfer operation with the data gw and the at least one cooperative communication cell member bs based on whether at least one ip packet of which a sequence number (sn) is less than an sn of the first ip packet is buffered. The other embodiments with respect to serving base stations, data gws, and cooperative communication cell member bss are also disclosed..
| Method and apparatus for transmitting control information from relay node on backhaul uplink|
According to one embodiment of the present invention, the method for transmitting control information from a relay node to a base station on a backhaul link comprises the steps of: determining whether one time slot of a backhaul uplink subframe from the relay node to the base station is a first type slot having transmitted symbol with guard time set or a second type slot without guard time set; diffusing the control information in a time domain using a first length sequence for the first type slot or a second length sequence for the second type slot; mapping the diffused control information on at least one slot from the first type slot or the second type slot; and transmitting the backhaul uplink subframe having more than one slot from the first type slot or the second type slot wherein the control information is mapped.. .
| Method for transmitting control signal to relay node at base station in mimo wireless communication system and apparatus therefor|
A method for transmitting a control signal to a relay node at a base station in a multi-input multi-output (mimo) wireless communication system is disclosed. The method comprises configuring relay-resource element groups (r-regs) in a unit of four resource elements (res) contiguous in the ascending order of subcarrier indexes, except for resource elements for a reference signal (rs); allocating transmission resources to the control signal in a unit of the relay-resource element group; and transmitting the control signal to the relay node by using the allocated transmission resources, wherein the resource elements for the reference signal include resource elements for channel state information-rs (csi-rs), which include resource elements for a channel state information rs to which a transmission power of 0 is allocated..
| Communication relay apparatus, mobile communication terminal, and radio base station|
A communication relay apparatus includes a mobile communication terminal mapping table manager configured to manage a terminal mapping table, a base station mapping table manager configured to manage a base station mapping table, and a transferring processor configured to: establish a communication path between a mobile communication terminal and a radio base station based on the respective mapping tables; and perform a transferring process of communication data between the mobile communication terminal and the radio base station through the communication path.. .
| Apparatus and method of performing channel estimation in a wireless communication system|
A method and apparatus of performing channel estimation in a wireless communication system are provided. The method includes determining a channel response value of a midamble sequence included in a downlink slot, detecting a first channel response value of a window allocated to a user and a second channel response value of a window allocated to at least one other user based on the channel response value of the midamble sequence, determining whether a base station (bs) of a current cell uses beamforming based on the first and second channel response values, and combining the first and second channel response values and using the combined channel response value for signal detection if it is determined that the bs does not use beamforming..
| Tdm-based resource partition between two radio base stations|
The present disclosure discloses a method of time division multiplexing (tdm)-based resource partition between two radio base stations (rbss) with which a user equipment (ue) is to perform dual connectivity and an associated radio network node. The method comprises the step of forming at least two non-overlapping uplink (ul) subframe sets and at least two non-overlapping downlink (dl) subframe sets.
| Beamforming with phase compensation|
A method and a base station for phase compensation in beamforming in a multi-antenna time division duplex (tdd) communication network. In a first transmission mode, the base station estimates a first phase shift between a first antenna port and a reference antenna port in uplink based on a measurement of a first sounding reference signal (srs).
| Mobile communication method, radio base station, and mobile station|
A duplexer d1 or d2 to be used is appropriately selected from multiple duplexers d1 and d2. A mobile communication method of the invention is a mobile communication method for a mobile communication system 1 operated in a band f1.
| Method and apparatus for measuring interference in wireless communication system|
Provided is a method for measuring interference by a user equipment (ue) in a multi-node system comprising inside a cell a base station and a plurality of nodes that are controlled by the base station, and the user equipment for same. The method comprises: receiving from the base station a cell-specific interference measurement setting message; and measuring the interference in a resource region indicated by the cell-specific interference measurement setting message, wherein the cell-specific interference measurement setting message is characterized by all of the nodes in the cell comprising information for setting a cell-specific interference measurement region for transmitting a zero-power channel state information (csi) reference signal (rs)..
| Method and apparatus for measuring interference in wireless communication system|
Provided is a method for measuring interference by a user equipment (ue) in a multi-node system comprising inside a cell a base station and a plurality of nodes that are controlled by the base station, and the user equipment for same. The method comprises: receiving from the base station a node set-specific interference measurement region (nsir) setting message from a node set that comprises a portion of the nodes from the plurality of nodes; and measuring the interference in a resource region that is indicated by the nsir setting message, wherein the nsir setting message is characterized by all of the nodes in the node set comprising information for setting an interference measurement region for transmitting a zero-power channel state information (csi) reference signal (rs)..
| Data communication method and mobile communication system|
Thus, the mobile terminal performs: processing of obtaining measurement quality values by measuring reception quality of each base station; processing of deciding on whether the measurement quality value of a serving base station exceeds a certain receiving level; processing of adding measurement quality values of other base stations to the measurement quality value of the serving base station until the sum exceeds the certain receiving level; and processing of notifying the serving base station of the serving base station and other base stations as candidates for an active set for e-mbms. This makes it possible to select as the active set for e-mbms an appropriate number of base stations that make it compatible to maintain good reception quality and to prevent interference..
| Downlink channel estimation method, system, and mobile terminal|
A downlink channel estimation method and system, and a mobile terminal. In the method, a first mobile terminal is located in a central area of a cell, a second mobile terminal is located in an edge area of the cell, and a resource block of the second mobile terminal is adjacent to a resource block of the first mobile terminal, so that the first mobile terminal can use a data signal transmitted from a base station to the second mobile terminal to perform downlink channel estimation, thereby improving the accuracy of the downlink channel estimation, and enhancing the performance of the downlink channel estimation..
| Method and apparatus for transmitting reference signal for reducing intercell interference in multiple input multiple output communication system|
According to one embodiment, a method for receiving a channel state information-reference signal (csi-rs) for measuring a channel includes: receiving csi-rss on resource elements (res) in a subframe configured for the csi-rss from a base station, wherein if each csi-rs of the received csi-rss is transmitted from each of four or more transmit antenna ports of the base station, at least two res on which each csi-rs is received are associated with each of the four or more transmit antenna ports; and transmitting channel state information based on the received csi-rss.. .
| Reference signal for 3d mimo in wireless communication systems|
A user equipment device obtains a first measurement using a first csi-rs sub-resource and a second measurement using a second csi-rs sub-resource. The user device derives a single csi-process based on the first and the second measurements and reports the csi-process to a base station.
| Communication protocol for wireless sensor networks using communication and energy costs|
A system, method, apparatus and software are disclosed for data communication within a wireless sensor network comprising a plurality of sensors and a base station, with the sensors organized into a plurality of clusters. Each sensor is to determine a communication cost comprising an amount of power or energy required for the sensor to communicate with all other sensors within its selected cluster, and to select a sensor having a lowest communication cost as a cluster head sensor.
| Apparatus and method for radio link monitoring in a wireless communication system|
An apparatus and method for radio link monitoring in a wireless communication system are provided, in which a transmission point communicating with a network where a base station (bs) and at least one remote radio head (rrh) coexist within a cell receives reference signal configuration information (rsci) from the network to which the transmission point belongs, receives rss of at least one rs type indicated by the received rsci from the bs and the at least one rrh that coexist within the cell, and performs radio link monitoring using the received rss of the at least one rs type.. .
| Signal processing method in wireless communication system and device therefor|
A method for operating a relay node in a wireless communication system. The method includes communicating, by the relay node, with a base station using a specific subframe for the relay node only; detecting, by the relay node, a problem with a connection between the relay node and the base station; starting, by the relay node, a timer upon detecting the problem with the connection between the relay node and the base station; and releasing, by the relay node, a restriction of using the specific subframe for the relay node only, if the started timer expires.