|| List of recent Reference Signal Received Power-related patents
| Method and device for managing coordinated multi-point|
The invention provides a method and a device for measuring enhanced reference signal received power (ersrp) of channel state information-reference signals (csi-rss) of transport points in coordinated multi-point (comp), and a method and a device for maintaining a measurement set/cooperating set based on the measurement. A method for reporting ersrp is provided, including: receiving csi-rss transmitted by multiple transport points; measuring and evaluating ersrp of the csi-rss of the multiple transport points based on measurement configuration; and transmitting a measurement report about the ersrp of the measured csi-rs.
|Selecting a communication channel based on a neighboring cell constraint|
Provided are methods and apparatus for selecting a channel to use for communicating. The methods and apparatus select a channel having the least interference and minimize a number of different channels in use.
|Method for estimating abs zone in wireless access system and same|
Disclosed in the present invention are a method for estimating an almost blank subframe (abs) zone in a wireless access system in which a macro cell and a pico cell coexist, and an apparatus for same. More specifically, the present invention comprises the steps of measuring reference signal received power (rsrp) by using a cell-specific reference signal which is inserted into a subframe of the macro cell, and determining whether the format of the subframe is a multicast broadcast single frequency network (mbsfn) abs by comparing an rsrp measurement value from a zeroth orthogonal frequency division multiplexing (ofdm) symbol of the subframe, and an rsrp measurement value from a symbol that is not the zeroth ofdm symbol..
Lg Electric Inc.
|Method and device for reporting reference signal received power|
Embodiments of the present invention provide a method and device for reporting reference signal received power. A base station determines at least one first channel-state information reference signal csi-rs resource used by a terminal to report reference signal received power rsrp, where the first csi-rs resource includes at least one antenna port group, and the antenna port group includes at least one antenna port; the base station sends first csi-rs resource configuration information to the terminal, where the first csi-rs resource configuration information carries the at least one first csi-rs resource; and the base station receives rsrp that is of each antenna port group included in the first csi-rs resource and is reported by the terminal.
Huawei Technologies Co., Ltd.
|Method and measuring in a wireless communication system|
A method for a terminal for taking a measurement in a wireless communication system according to an embodiment of the present invention comprises the steps of: measuring a reference signal strength indicator (rssi); and determining reference signal received quality (rsrq) from the rssi and reference signal received power (rsrp), wherein the subframe for which the measurement is taken is directed by upper layer signaling, and if the terminal can obtain reference signal information of the neighboring cell, the rssi is measured on the basis of an ofdm symbol, comprising a reference signal, in the subframe.. .
Lg Electronics Inc.
|Downtilt selection in a full dimensional multiple-input multiple-output system|
A technology for an enhanced node b (enode b) in a cellular network that is operable to determine downtilt using full dimensional (fd) multiple-input multiple-output (mimo). A plurality of orthogonal frequency division multiple access (ofdma) signals can be transmitted, wherein each transmitted ofdma signal is transmitted with a selected downtilt angle from a two dimensional antenna array of the enode b.
|Power adaptive method and apparatus in a heterogeneous network|
A method and apparatus in a heterogeneous network includes: receiving, by a pico base station, reference signal received power of a serving base station and a neighboring base station reported by multiple pieces of user equipment (ue) within its coverage; calculating, by the pico base station, an average value of data received power of the ue and an average value of the reference signal received power of the ue for receiving reference signal transmitted by the macro base station according to the reference signal received power; and transmitting the above calculation result by the pico base station to the macro base station, so that the macro base station determines transmitted power of a unicast physical channel in an almost blank subframe configured by the macro base station for the pico base station; the throughput of the system is optimized accordingly.. .
|Radio transmission device and radio transmission method|
A mobile station includes communication control circuitry that selects a preamble contained in a first random access preamble group when a message size based on data available for transmission does not meet a first condition or when a value calculated based on a reference signal received power of downlink does not meet a second condition, a preamble contained in a second random access preamble group when the message size based on data available for transmission meets the first condition and the value calculated based on the reference signal received power of downlink meets the second condition, and a preamble contained in the third random access preamble group for a handover, independent of the message size based on data available for transmission and the value calculated based on the reference signal received power of downlink. The communication control circuitry also generates and transmits a selected preamble..
Godo Kaisha Ip Bridge 1
|Method and device for measurement in wireless communication system|
One embodiment of the present invention relates to a method for allowing a terminal to measure at least one or more transmission points among a first transmission point and a second transmission point, which are neighboring cells, in a wireless communication system, and the measurement method comprises the steps of: measuring a reference signal strength indicator (rssi) in a predetermined resource of a subframe; and measuring reference signal received quality (rsrq) from said rssi and reference signal received power (rsrp), wherein said predetermined resource is associated with the setting of an almost blank subframe (abs) of said first transmission point for said subframe.. .
|Cellular communication system computation of rsrp in the presence of large frequency errors|
A reference signal received power (rsrp) value is produced from a received orthogonal frequency division multiplexed (ofdm) signal that comprises a plurality of reference symbols located at known sub-carrier frequencies and times within the received ofdm signal. Rsrp value production involves, for each hypothesized error state selected from a plurality of different hypothesized error states, ascertaining a corresponding hypothesized rsrp value, and then using the hypothesized rsrp values as a basis for determining a value for use as the produced rsrp value (e.g., by selecting a maximum one of the hypothesized rsrp values as the produced rsrp value).
Radio resource allocation apparatus and method using interference indicator in femto cell network
A radio resource allocation apparatus and method using an interference indicator in a femto-cell network are disclosed. The radio resource allocation apparatus using an interference indicator in a femto-cell network includes: an interference indicator obtaining unit obtaining any one or more of interference indicators including load information of a base station in the femto-cell network, a change amount of reference signal received power (rsrp) to reference signal received quality (rsrq), and a channel quality indicator (cqi); a priority determining unit providing different weights to each of the interference indicators and determining an allocation priority of radio resources using the interference indicators to which the weights are provided; and a radio resource allocating unit allocating the radio resources to the base station in any one of a dedicated carrier mode, a partially shared carrier mode, and a shared carrier mode using the allocation priority..
Communication control method, base station, and user terminal
A communication control method including a first base station and a second base station having a smaller coverage area than the first base station, comprises: a step a, performed by the second base station, of notifying the first base station of a reference signal transmission power of the second base station; a step b, performed by a user terminal connected to the first base station, of measuring a reference signal received power from the second base station, and then reporting the reference signal received power to the first base station; and a step c, performed by the first base station, of estimating a path loss between the second base station and the user terminal, on the basis of the reference signal transmission power notified from the second base station in the step a and the reference signal received power reported from the user terminal in the step b.. .
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.
Measuring device and measurement non-intrusive throughput measurement in communication networks
A measuring device for performing measurements of a measurement signal emitted by a communication network using a plurality of resource blocks comprises digital processing means comprises power detection means for determining a received signal strength indicator rssi indicative of a received power of user data within a number of resource blocks in the measurement signal and a reference signal received power rsrp indicative of a received power of reference signals within a number of resource blocks in the measurement signal. It further comprises resource determining means for determining occupied and unoccupied resource blocks based on the determined reference signal received power rsrp and received signal strength indicator rssi.
Apparatus and methods of joint transmit power and resource management
The present disclosure presents a method and apparatus for joint power and resource management in a wireless network. For example, the disclosure presents a method for receiving reference signal received power (rsrp) measurements of one or more neighboring base stations of a base station.
Method for measuring cell in wireless access system, and device therefor
Disclosed are a method for measuring a cell in a wireless access system and a device therefor. Specifically, the method comprises the steps of: receiving a pattern for reference signal received power (rsrp)/reference signal received quality (rsrq) measurement; measuring a received signal strength indicator (rssi) from a plurality of subframes included in the pattern for the rsrp/rsrq measurement; extracting almost blank subframes (abss) from the plurality of subframes included in the pattern for the rsrp/rsrq measurement by using the measured rssi; and measuring the rsrp/rsrq from the plurality of subframes included in the pattern for the rsrp/rsrq measurement in consideration of the extracted abss..
Reference signal power measurement and reporting for improving performance in a network with geographically separated antenna ports
Devices and methods for improving performance in a network with geographically separated antenna ports based on determining arid reporting reference signal power from a communication device to a base station are provided. In one aspect, the difference between received reference signal power values is used in determining a reported reference signal power value, such as reference signal received power (rsrp) in a multiple-input multiple-output (mimo) network including geographically separated antenna ports transmitting on cell-specific reference signal (cbs) ports 0 and 1.
Radio link monitoring (rlm) and reference signal received power (rsrp) measurement for heterogeneous networks
A method for communicating in an advanced long term evolution (lte-a) network using common reference signal (crs) resources associated with different interference levels due to resource partitioning is disclosed. Signals are received from an enodeb indicating a subset of crs resources for radio link monitoring (rlm) and/or reference signal received power (rsrp) measuring.
Communication system, terminal, and base station
There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unit 605 configured to configure, at the base station, for each terminal, a first reference signal configuration for configuring a measurement target for channel state reporting, configured to configure, at the base station, for each terminal, a second reference signal configuration specifying a resource element to be excluded from the target of data demodulation in a case where the terminal demodulates data, and configured to configure, at the base station, for each terminal, a third reference signal configuration for configuring a measurement target for which a reference signal received power is to be measured by the terminal..
Feedback and scheduling for coordinated multi-point (comp) joint transmission (jt) in orthogonal frequency division multiple access (ofdma)
A method implemented in a user equipment (ue) used in an orthogonal frequency division multiple access (ofdma) wireless communications system supporting coordinated multi-point (comp) joint transmission (jt) is disclosed. The method includes measuring reference signal received power (rsrp), transmitting, to a network, first feedback on the rsrp, receiving, from the network, a comp measurement set, conducting pre-scheduling comp ue fallback according to the comp measurement set, computing channel quality and direction information according to a ue category, and transmitting, to the network, second feedback on the channel quality and direction information.
Method and detecting cell outage and controlling transmission power
Disclosed are a method and an apparatus for detecting a cell outage and controlling transmission power. The method of detecting the cell outage includes: receiving a radio link failure (rlf) message from a user equipment (ue) or an adjacent bs; acquiring reference signal received power (rsrp) and reference signal received quality (rsrq) of the ue with respect to a serving cell and adjacent cells before rlf generation, which are included in the rlf message; calculating a signal to interference plus noise ratio (sinr) of the serving cell by using the acquired rsrp and rsrq; calculating an sinr of a best adjacent cell having a largest rsrp among the adjacent cells of the ue by using the acquired rsrp and rsrq; and comparing an sinr of a best cell having a largest sinr between the serving cell and the best adjacent cell with a preset reference value and determining whether the cell outage has been generated..
Method, device, and system for coordinated multi-point transmission/reception
A method, a device, and a system for coordinated multi-point transmission/reception are provided. The method includes: obtaining a reference signal received power rsrp of cells in a measurement set of a user equipment ue; determining a coordinated set of the ue according to the rsrps; obtaining a post-processing sinr of the ue in the coordinated set and a post-processing sinr of the ue in a serving cell; determining that the post-processing sinr of the ue in the coordinated set is greater than the post-processing sinr in the serving cell; and performing coordinated multi-point transmission/reception for the ue.
Radio transmission device and radio transmission method
A base station is provided, including a transmitter configured to broadcast information for determining one or more first preambles contained in a first random access preamble group and any second preamble(s) contained in a second random access preamble group; and a receiver configured to receive a preamble transmitted by a mobile station. The received preamble is randomly selected from among the first preamble(s) when the first random access preamble group is selected, or is randomly selected from among the second preamble(s) when the second random access preamble group is selected.
Intra cell interference mitigation in a wireless network employing relay nodes
A method and relay node (rn) in a wireless communications network for controlling downlink transmissions to user equipments (ues) being served by the rn. An rn transceiver circuit requests each ue to measure and report a reference signal received power (rsrp) and a ue total downlink interference.
Csi-rs based channel estimating method in a wireless communication system and device for same
The present invention relates to a user equipment to perform an estimation operation in a wireless communication system. In more detail, the method includes: receiving configuration information of csi-rss (channel status information-reference signals) defined by a plurality of antenna ports from a base station; combining csi-rss defined by specific antenna ports among the plurality of antenna ports; and performing the measurement based on the combined csi-rss.
Method and selecting a node in a distributed multi-node system
This specification relates to a method for selecting a node in a serving cell in a distributed multi-node system, the method being characterized by comprising the steps of: receiving a channel state information reference signal of each node in the serving cell from a base station; measuring a signal intensity or interference level about the respective nodes through the received channel state information reference signal; and determining at least one valid node from among the respective nodes based on the measured result, wherein the signal intensity or the interference level is expressed in any one of channel state information reference signal received power (csi-rsrp), channel state information reference signal received quality (csi-rsrq), and channel state information reference signal's signal intensity (csi-rssi).. .
Connected mode gap measurement for lte tdd
A method of wireless communication includes selecting three or more reference signal symbols from at least two subframes detected within a measurement window location during a connected mode gap. The selected reference signal symbols are selected from reference signal symbols of at least one non-mbsfn subframe and one reference signal symbol of a special subframe.
Measurement requesting and reporting
A method of operating a node of a communications network comprises the node requesting a user equipment unit to prepare a measurement report concerning a measurement object. The measurement report includes (a) a measurement result for the measurement object as measured from a current serving cell and a measurement result for the measurement object as measured from a neighbor cell; and (b) additional measurement reporting including measurements that are available at the user equipment unit from multiple serving carriers.
Method and system for measurement report in coordinated multi-point transmission and reception system
A method and system for measurement reporting in a coordinated multipoint transmission/reception (comp) system are disclosed in the present invention. The method includes: according to a comp measurement configuration message sent by a serving cell, when a measurement event report triggering criterion is satisfied, a terminal reporting a measurement report to the serving cell; wherein, the measurement event report triggering criterion includes: a movement speed measurement value of the serving cell being lower than a preset first measurement threshold, and a ratio of a reference signal received power (rsrp) measurement value of the serving cell to an rsrp measurement value of a measuring cell being lower than a preset second measurement threshold..
User equipment and adaptive selection of handover parameters in wireless-access networks
Embodiments of user equipment (ue) and method for adaptively selecting an a3offset-ttt pair for handover in a wireless access network are generally described herein. In some embodiments, the ue may select an a3offset value based on target cell reference signal received power (rsrp) and select a time-to-trigger (ttt) based on serving cell rsrp.
Methods and power saving in discontinuous reception - adaptive neighbor cell search duration
Methods and apparatus for adaptively adjusting temporal parameters (e.g., neighbor cell search durations). In one embodiment, neighbor cell search durations during discontinuous reception are based on a physical channel metric indicating signal strength and quality (e.g.
Automatic uplink-downlink ratio reconfiguration setting in wireless communication system
At least one neighbor cell is identified by a base station by detecting a synchronization signal of the at least one neighbor cell. A received signal power, such as a reference signal received power (rsrp) or a reference signal received quality (rsrq), or a combination thereof, is also measured from the at least one neighbor cell.
Cell measurement method and terminal
A cell measurement method of a user equipment (ue) is disclosed. The cell measurement method may include receiving a radio resource configuration dedicated information element (ie) and a measurement object from a serving cell.
Computation of measurement metrics for wireless networks
Methods and apparatus for computing measurement metrics in a wireless communications network are provided. One example method generally includes obtaining a channel impulse response (cir) from one or more reference signals (rss) transmitted from one or more antennas of a base station (bs); calculating an absolute square per element of the cir to generate channel energy response (cer) elements; calculating a threshold value based on a noise variance estimated from a portion of the cer elements; selecting cer elements that exceed the threshold value; and computing a reference signal received power (rsrp) value based on the selected cer elements..
System and measurement bandwidth configuration
Signaling a reference signal received power (rsrp) or reference signal received quality (rsrq) measurement of a wireless channel is achieved by sending an measurement bandwidth (measbandwidth) indicator to a receiver that mandates a specific measurement bandwidth for performing the rsrp or rsrq measurement. By virtue of receiving the measbandwidth indicator, the receiver is required to perform the rsrp or rsrq measurement over a portion of the wireless channel that is equal to the measurement bandwidth specified by the measbandwidth indicator..