|| List of recent Srs Transmission-related patents
|Radio base station and communication control method|
An enb assigns an uplink srs resource for transmitting the srs utilized in an adaptive array control, and a pdsch resource that overlaps, on a frequency axis, with the uplink srs resource, to a ue. The enb assigns the uplink srs resource within a range of an srs transmission available frequency band f1 that can be used for transmitting the srs.
|Method of setting ue mode switching for rpd reduction|
A ue communication device is provided having a transmitter architecture that transmits srs transmissions and pusch transmissions. A reference mode chosen from a lpm, an mpm and an hpm is selected based on a present power mode of the srs transmission or based on a predicted power mode that the pusch transmission following the present srs transmission will likely operate in.
|Wireless transmission apparatus, wireless reception apparatus, and wireless communication method|
To improve the operation and the effect of icc by appropriately limiting resources of a reference signal. An srs generating unit (154) generates an srs as a reference signal based on srs information transmitted from a reception unit (156), and a transmission unit (155) transmits the srs based on the srs information transmitted from the reception unit (156).
|Method and apparatus for transmitting uplink signal|
A method and device for transmitting an uplink signal in a wireless communication system is provided. A user equipment transmits a physical uplink shared channel (pusch) on a srs subframe for a first serving cell to a base station if a srs transmission on the srs subframe for the first serving cell is overlapped with an uplink transmission for a second serving cell.
|Enhanced srs transmission for mimo operation in lte-a|
Enhanced sounding reference signal (srs) transmissions for multiple input, multiple output (mimo) operation are disclosed in which a user equipment (ue) detects an observed interference level for each receiver chain of the ue. In response to an imbalance, the ue precodes a srs targeting downlink operation to indicate the imbalance.
|Method and apparatus for uplink power control in a wireless communication network|
According to the teachings herein, an lte or other wireless communication network provides for independent control of srs transmissions by a ue or other wireless device. The network advantageously sends dci messages for srs power control using a modified format 3/3a, where the message length conforms to that used for conventional format 3/3a messages but where the message is masked using a distinct rnti.
|Method of transmitting sounding reference signal|
A method of transmitting a sounding reference signal (srs) includes receiving srs operation information including a sounding indicator, the sounding indicator indicating whether srs transmission takes place at a subframe; generating the srs according to the srs operation information, and if the sounding indicator indicates occurrence of srs transmission, transmitting the srs at the subframe. Multiplexing can be achieved without collision between data and a sounding reference signal and single carrier characteristics required in uplink transmission can be preserved..
|Method for allocating multi-ues' sounding reference signal (srs) uplink resources and enb|
The present invention is to provide a method for allocating multi-ues' sounding reference signal (srs) uplink resources, and an enb for allocating multi-ues' srs uplink resources with the method. The method may automatically and dynamically allocate multi-ues' srs resource in both the time domain resource and the frequency domain resource in accordance with system capacity attribute value and configured srs transmission period.
|Apparatus and method for supporting transmission of sounding reference signals from multiple antennas|
Methods and apparatuses, through the use of a downlink control indication (dci) format or through higher layer signaling, for dynamic activation and deactivation of sounding reference signal (srs) transmissions from user equipments (ues) in an ul component carrier (cc) with configured srs transmissions, the dynamic configuration of srs transmissions parameters, the dynamic activation and configuration of srs transmissions in an ul cc without previously configured srs transmissions for a reference ue, and the configuration of srs transmissions from multiple ue transmitter antennas.. .
|Method and apparatus for transmitting srs in lte tdd system|
A method and apparatus are provided for transmitting an uplink sounding reference signal (srs) by a user equipment (ue). The method includes receiving information related to an srs period and an offset for an srs transmission; generating the uplink srs; and when the information indicates the srs period is 2 ms, transmitting the srs in two single carrier frequency division multiple access (scfdma) symbols in a half frame according to the offset for the srs transmission.
|Method and device for transmitting data in wireless communication system|
Provided are a method and a device for transmitting wireless communication data. A terminal transmits a channel quality indicator (cqi) to a base station through a physical uplink control channel (pucch) which is allocated within a sounding reference signal (srs) subframe that is determined in a ue-specific manner, and transmits uplink (ul) data through a physical uplink shared channel (pusch) which is allocated within said srs subframe.
|Radio base station and communication control method|
When the number of the serving radio terminals ue2 in the cell 3-1 is larger than the number of the srs transmission frequency bands that are set to the transmittable frequency band, the radio base station enb1-1 transmits rrc connection reconfiguration, which includes the information (the transmission stop instruction information) instructing to stop transmitting srs, to a serving radio terminal ue2 that is regarded as having a small pf value and a low priority of srs transmission.. .
|Method and apparatus for transmitting an uplink signal by a relay in a wireless communcation system|
The present invention relates to a wireless communication system, and to a method and apparatus for transceiving an uplink signal by a relay in a wireless communication system. According to the present invention, a scheme, in which the relay may correctly determine a reference resource for channel state information (csi) calculation, and thus may perform accurate csi transmission, may be provided.
|Wireless comnmunication terminal and power control method|
Provided is a wireless communication terminal which, when srss are simultaneously transmitted between ccs and between antenna ports, avoids increasing the effect of bit rounding errors of d/a converters when the number of antenna ports set for srs transmission differs between ccs. This device comprises a transmission power calculation unit (107) which calculates the transmission power of a plurality of ul channels of a plurality of ccs and a plurality of antenna ports.
|Method and device for a relay node to transmit a sounding reference signal to a base station in a wireless communication system|
The present invention relates to a method for a relay node (rn) to transmit a sounding reference signal (srs) to a base station in a wireless communication system. The method for srs transmission includes: receiving the backhaul downlink subframe setting information from the base station; allocating backhaul uplink subframes on the basis of the received backhaul downlink subframe setting information; receiving uplink subframe setting information; receiving uplink subframe setting information for srs transmission from the base station; receiving an indicator for triggering the srs transmission from the base station; and, if a first uplink subframe from among the uplink subframes for the srs transmission is the backhaul uplink subframe, transmitting the srs from the first uplink subframe to the base station; or, if the first uplink subframe is not the backhaul uplink subframe is not the backhaul uplink subframe, not transmitting the srs to the base station; or transmitting the srs from a second uplink subframe, which is backhaul uplink subframe from among the uplink subframes for the srs transmission and is subsequently the closest to the first uplink subframe, to the base station..
|Radio base station and communication control method|
Disclosed is a wireless base station (enb1-1) that sets to each serving wireless terminal (ue2) different frequency bandwidths (srs transmission frequency bandwidths) that are used when said serving wireless terminals (ue2) send srs at a predetermined special sub-frame timing. In addition the wireless base station (enb1-1) sends the set srs transmission frequency bandwidth information to the serving wireless terminals (ue2)..
|Radio base station, radio terminal, and communication control method|
In a case where, although a radio base station (enb 1-1) has established an srs transmission frequency band, a serving radio terminal (ue 2-1) has transmitted, to the radio base station (enb 1-1), an srs by use of only a frequency band that is a part of the srs transmission frequency band, the radio base station (enb 1-1) allocates a downstream resource block the frequency band of which is included in the srs transmission frequency band and further the frequency band of which is identical with the frequency band of the srs received at the latest; then establishes, for the downstream resource block, a transmission weight based on the srs received at the latest; and then uses the downstream resource block to transmit a radio signal.. .
|Communication device and srs transmission control method|
Provided are a communication device and an srs transmission method capable of reducing the possibility of a difference in recognition between the presence or absence of an srs transmission between a base station and a terminal or of an srs resource so as to prevent degradation of system throughput. At a terminal (200), a reception processing unit (203) detects control information indicating whether or not to request transmission of a sounding reference signal (srs), whereupon a transmission signal forming unit (207) transmits an a-srs by way of control by a transmission control unit (206) on the basis of control information.
|Method and apparatus for transmitting a sounding reference signal|
Provided are a method and apparatus for transmitting a sounding reference signal. A terminal receives, from a base station, a configuration for periodic channel quality indicator (cqi) transmission and a configuration for sound reference signal (srs) transmission.
|Radio base station apparatus, mobile terminal apparatus and radio communication method|
It is an object of the present invention to adequately report the srs transmission timing and srs parameters to a mobile terminal apparatus, when an aperiodic srs is adopted, and efficiently use radio resources to be used for srs transmission. A radio base station apparatus that reports srs transmission control information to a mobile terminal apparatus and controls transmission of an srs by the mobile terminal apparatus, and the radio base station apparatus has an srs setting section that selects bit information to report to the mobile terminal apparatus, from a table having bit information to indicate not to trigger the srs and bit information to indicate to trigger the srs using a default srs parameter, and a reporting section that reports the bit information for the mobile terminal apparatus using a downlink control channel..
|Radio base station and communication control method|
The present invention provides a wireless base station (enb1-1) that sets a first srs transmission frequency band as a transmission frequency band for srs at a first ssf timing and sets the first srs transmission frequency band as the transmission frequency band for srs at a second ssf timing, within the time for one frame. In this way, all frequency bands (allocatable frequency bands) for usable downstream resource blocks in wireless communications between the wireless base station (enb1-1) and a serving wireless terminal (ue2-1) are covered by the first srs transmission frequency band and the second srs transmission frequency band..
|Method of resource allocation and signaling for aperiodic channel sounding|
A method for resource allocation. The method includes signaling a set of srs subframes in which an srs can be transmitted, wherein a ue not capable of aperiodic srs transmission can be instructed to transmit periodic srs in any of the srs subframes.
|Method for transmitting an srs-triggering-based srs in a wireless communication system|
The present invention relates to a method and terminal apparatus which involve transmitting a sounding reference signal (srs)-triggering-based srs in a wireless communication system. The terminal apparatus of the present invention comprises a receiver which receives, from a base station, an srs-triggering indicator for triggering an srs transmission; and a transmitter which transmits the srs via a preconfigured uplink subframe in accordance with the srs-triggering indicator..
|Transmitter apparatus, receiver apparatus, transmission method, and notification method|
This invention relates to a transmitter apparatus, a receiver apparatus, a transmission method and a notification method that, when a switching between mimo communication and non-mimo communication is performed, can suppress the increase of an srs (sounding reference signal) resource, while suppressing the degradation of trackability of temporal variation of a channel. In a terminal (200), a mapping unit (212) maps an srs sequence, which is received from a pilot, generating unit (216), on the basis of information related to an srs hopping pattern, received from a base station (100).
|Support of network based positioning by sounding reference signal|
A method of network-based positioning using sounding reference signal (srs) is proposed. An enodeb configures a number of parameters of a periodic srs transmission for a user equipment (ue).
|Method of terminal transmitting sounding reference signal on the basis of aperiodic sounding reference signal triggering and method for controlling uplink transmission power to transmit aperiodic sounding reference signal|
The method of the terminal transmitting the srs on the basis of the aperiodic srs triggering according to the present invention comprises the steps of: receiving a plurality of aperiodic srs configuration information from the base station; receiving an aperiodic srs transmission triggering indicator from the base station; selecting the specific aperiodic srs configuration information among the plurality of aperiodic srs configuration information on the basis of at least one among a sub-frame index for receiving the aperiodic srs transmission triggering indicator, a time relation between the aperiodic srs transmission sub-frames, and an uplink channel state; and transmitting an aperiodic srs for the aperiodic srs transmission triggering indicator on the basis of the selected aperiodic srs configuration information, the plurality of aperiodic srs configuration information including the information about a resource for transmitting the aperiodic srs corresponding to the aperiodic srs transmission triggering indicator. In addition, according to the present invention, the terminal can be used for receiving a power offset value for transmitting the aperiodic srs from the base station and determining a transmission power value for transmitting the aperiodic srs..
|Resource allocation and signaling for aperiodic sounding|
This patent application considers the configuration aperiodic sounding reference signal parameters by radio resource control signaling and the triggering of aperiodic srs transmission by detection of a positive trigger in downlink control information. Transmission timing rules are also proposed to determine the valid subframes for aperiodic srs transmission..
|Method and apparatus for sounding reference signal resource allocation in long term evolution system|
The present invention provides a method for sounding reference signal (srs) resource allocation in a long term evolution (lte) system, including: a system side setting different srs transmission periods to correspond to different cycle shifts, and during the process of allocating srs resources for user equipment (ue), setting a cycle shift adopted by the ue according to the srs transmission period adopted by the ue. The method and apparatus of the present invention realize simple and effective srs resource multiplexing with high utilization ratio among ues with different periods..
|Component carrier (de)activation in communication systems using carrier aggregation|
This invention relates to the proposal of component carrier (de)activation message that is allowing a activation or deactivation of one or more component carriers in the uplink or downlink. Furthermore, the invention relates to the use of the new component carrier (de)activation message in methods for (de)activation of downlink component carrier(s) configured for a mobile terminal, a base station and a mobile terminal.
|Enhancing sounding reference signals (srs)|
A method for enhancing a sounding reference signal (srs) in a non-root wireless communication device is disclosed. The method determines that all srs transmissions for the wireless communication device are to occur in an uplink pilot time slot (uppts) portion of a transition subframe.
|Sounding reference signals in asymmetric carrier aggregation|
Sounding reference signal (srs) transmission is disclosed for asymmetric carrier aggregation, where the carrier aggregation occurs using multiple component carriers that include both paired and at least one non-paired component carrier. A user equipment (ue) determines whether to transmit srs over at least one of the non-paired component carriers.
|Radio communication base station device and correlation setting method|
Provided is a radio communication base station device which can suppress a use amount of an srs communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an srs transmission time interval so that the preamble transmission time band and the srs transmission time band are in the same transmission time band.