Patent classifications
H04J11/003
Transmitting apparatus, receiving apparatus, transmitting method, and receiving method
A transmitting apparatus includes a first signal generating unit that generates, on the basis of data a first signal transmitted by single carrier block transmission; a second signal generating unit that generates, on the basis of an RS, a second signal transmitted by orthogonal frequency division multiplex transmission; a switching operator that selects and outputs the second signal in a first transmission period and selects and outputs the first signal in a second transmission period; an antenna that transmits the signal output from the switching operator; and a control-signal generating unit that controls the second signal generating unit such that, in the first transmission period, the RS is arranged in a frequency band allocated for transmission of the RS from the transmitting apparatus among frequency bands usable in OFDM.
MEASUREMENT AND REPORTING FOR UE-TO-UE INTERFERENCE
Methods, systems, and devices for wireless communications are described which provide for efficient backhaul communications and identification of resources for cross-link interference (CLI) measurements and reporting. A common resource pool may be configured in which CLI measurements for resources within the resource pool have a common configuration. When providing information indicating resources that are to be measured for CLI, a bitmap that indicates resources within the common resource pool may be provided with CLI measurement configurations corresponding to the common resource pool configuration. Such a bitmap may be communicated via backhaul connections between neighboring base stations when initiating a CLI measurement. Various described techniques also provide for common configuration for CLI measurements, provide for efficient reporting of CLI measurements, and provide for accurate representation of CLI based on measurements at a victim UE.
Remote interference management reference signal transmission
A method, base station (BS), user equipment (UE), apparatus, and computer program product for wireless communication are provided. An aggressor BS may cause a remote interference condition for a victim BS, and the victim BS may transmit a reference signal to the aggressor BS to enable a remote interference management (RIM) operation to be performed. However, the aggressor BS may be unable to identify the victim BS based at least in part on the reference signal, and may fail to transmit a reference signal as a response. Further, when the aggressor BS does transmit a reference signal, the victim BS may be unable to identify the aggressor BS. This may reduce an effectiveness of RIM operations. In some aspects, BSs may transmit reciprocal reference signals including identification information to enable effective RIM operations.
MEASURING AN END-TO-END DELAY(S) IN A DISTRIBUTED COMMUNICATIONS SYSTEM
Measuring an end-to-end delay(s) in a distributed communications system (DCS) is disclosed. The DCS is coupled to a signal source(s) supporting multiple logical channels and includes multiple remote units each communicating in one or more of the logical channels. The DCS is configured to measure an end-to-end delay(s), which includes a path delay(s) between the signal source and the remote units and a local delay(s) at each of the remote units, for each of the logical channels. The measured end-to-end delay(s) can help the signal source to more accurately determine an equivalent coverage range of the DCS, thus making it possible to generate random access preambles for the DCS based on as few Zadoff-Chu (ZC) sequences as possible. By generating the random access preambles based on fewer ZC sequences, it is possible to minimize interference among the random access preambles, thus helping to improve random access performance in the DCS.
SIGNAL DESIGN ASSOCIATED WITH CONCURRENT DELIVERY OF ENERGY AND INFORMATION
A base transmission signal and an auxiliary transmission signal may be used to (e.g., concurrently) improve a harvesting efficiency of an energy receiver while maintaining a prespecified performance level of an information receiver. An auxiliary transmission signal may be constructed. The construction of the auxiliary transmission signal may be signaled. An auxiliary transmission signal may be adapted. The adaptation of the auxiliary transmission signal may be signaled. An impact of auxiliary transmission signals on an information receiver's performance may be mitigated. One or more narrowband energy harvesting (EH) signals may be used, for example to provide a high peak to average power ratio (PARR) for EH devices (e.g., without significantly impacting overall transmitted signal PARR) characteristics. One or more narrowband auxiliary signals may be used, for example to enhance the PARR characteristics of an information signal sub-band.
PAYLOAD MULTIPLEXING WITH ORTHOGONAL SEQUENCES
Methods, systems, and devices for wireless communications are described. For instance, a UE or base station may identify a first portion of a payload associated with a first priority and a second portion of the payload associated with a second priority less than the first priority. The UE or base station may select a first matrix associated with a first domain for the first portion of the payload and a second matrix associated with a second domain for the second portion of the payload based on a first maximum index interval for the first matrix being larger than a second maximum index interval for the second matrix. The UE may transmit or the base station may receive the first portion of the payload using one or more sequences associated with the first matrix and the second portion of the payload using one or more sequences associated with the second matrix.
UPLINK AND DOWNLINK RECIPROCITY MANAGEMENT OF INTERFERENCE
The present disclosure relates to methods and devices for mitigating inter-cluster interference in clusters where one or more network nodes are transmitting in coordination using several transceiver antennas. In particular the disclosure relates to improved precoder algorithms to be used for coordinated multipoint transmission applications. The disclosure also relates to corresponding computer programs. The disclosure proposes a method, performed in a communication system, of mitigating inter-cluster interference, wherein the communication system is configured to coordinate transmissions of one or more wireless devices within two or more wireless device categories and one or more network nodes, wherein the one or more network nodes are transmitting in coordination to the wireless devices in the cluster using several transceiver antennas.
Wake-up signal transmission
A method is disclosed of a wireless communication node adapted to transmit a wake-up signal for waking up one or more wireless communication receivers. The method comprises determining a first set of data for concurrent transmission with the wake-up signal, and determining a first interference indicator value indicative of a level of interference caused by the first set of data to the wake-up signal due to concurrent transmission. The method also comprises deciding if the wake-up signal is to be concurrently transmitted with the first set of data based on the first interference indicator value, and transmitting the wake-up signal in accordance with the decision. Corresponding arrangement, wireless communication node and computer program product are also disclosed.
MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) BASED CONCURRENT SCAN OF NEIGHBOR CELLS
Methods, systems, and devices are described for concurrently performing handoff-related measurements for neighbor cells using multiple input multiple output (MIMO) antenna resources. In one example, a mobile device is in communication with a serving cell. Handoff-related measurements of first wireless signals from a first neighbor cell are performed. The first wireless signals are received at first MIMO antenna resources of a device. Handoff-related measurements of second wireless signals from a second neighbor cell are performed, as well. The second wireless signals are received at second MIMO antenna resources concurrently with the first wireless signals received at the first MIMO antenna resources. The first handoff-related measurements and the second handoff-related measurements may be performed during a scan interval. A type of handoff-related measurement to perform may be determined based on a determined length of the scan interval.
Apparatus and method for controlling interference between services in wireless communication system
The present disclosure relates to a 5.sup.th generation (5G) or pre-5G communication system for supporting a higher data transfer rate after a 4.sup.th generation (4G) communication system such as long term evolution (LTE). A method for operating of a transmitting end in a wireless communication system includes allocating a first resource for a first service and a second resource for a second service, determining a precoder for controlling interference between the first service and the second service, precoding a first signal for the first service using the precoder, and transmitting the precoded first signal and a second signal for the second service through the first resource and the second resource. At least one part of the first resource overlaps with the second resource.