50 results about "Single-frequency network" patented technology

A method and apparatus are provided, in which a higher layer configuration is received (2002), where the user equipment is configured with two timing reference signals for receiving a common communication having a same set of data from multiple signal sources. A downlink scheduling assignment including downlink control information is received (2004) in a control channel scheduling a physical downlink shared channel, wherein the downlink scheduling assignment comprises an indication of a transmission configuration indicator identifying two transmission configuration indicator states, which each indicate quasi-co-location information of a demodulation reference signal corresponding to the physical downlink shared channel relative to a respective one of the first and the second timing reference signals. The physical downlink shared channel is then received (2006) according to the downlink scheduling assignment including the downlink control information.

Embodiments of the present disclosure relate to a method and apparatus for demodulation reference signal (DMRS) ports and phase tracking reference signal (PTRS) ports in a single frequency network (SFN)-based physical uplink shared channel (PUSCH). A terminal device receives a PTRS-DMRS association indication from a network device. The indication includes a PTRS-DMRS association field having a first portion indicating a scheduled DMRS port and a second portion indicating a PTRS port associated with the DMRS port. Based on the indication, the terminal device can simultaneously transmit uplink signals to the network device in an SFN manner via multiple antenna panels. This enables stable and highly accurate SFN uplink transmission using the DMRS port and the corresponding PTRS port.

A reception method and apparatus for use in a multi-cell orthogonal frequency division multiple access (OFDMA) wireless system. In a unicast receive mode during a first receive time period, a first group of orthogonal frequency division multiplexing (OFDM) symbols is received by a mobile device from multiple of a plurality of antennas at a serving base station. In a single-frequency-network (SFN) receive mode during a second receive time period, a second group of OFDM symbols is received by the mobile device from one of a plurality of antennas at the serving base station. The transition between the first receive time period and the second receive time period occurs during a cyclic prefix or a cyclic postfix between OFDM symbols, and the plurality of antennas produce a first beam pattern during the unicast receive mode and a second beam pattern during the SFN receive mode.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive a unified transmission configuration indicator (TCI) indication indicating a first TCI state associated with a physical downlink shared channel (PDSCH) communication, wherein time resources associated with the PDSCH communication at least partially overlap with time resources associated with a control resource set (CORESET) associated with a second TCI state different from the first TCI state. The mobile station may prioritize reception of a physical downlink control channel (PDCCH) communication associated with the CORESET based at least in part on the second TCI state being different from the first TCI state. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, using a first transmit / receive (Tx / Rx) chain, a low-power wake-up signal (LP-WUS) communication, wherein the LP-WUS communication is conveyed via a set of single frequency network (SFN)-type transmissions from a set of transmitters associated with a set of cells. The UE may communicate, using a second Tx / Rx chain, in one or more resources in connection with the LP-WUS. Numerous other aspects are described.

A base station may establish a cellular link with a user equipment (UE) according to a single frequency network scheme. The base station may then determine one or more control resource set (CORESET) transmission configuration indication (TCI) states and transmit signaling to configure the UE with the one or more CORESET TCI states. Additionally or alternatively, the one or more CORESET TCI states may be useable by the UE in performing communications with at least one of a first transmission reception point (TRP) and a second TRP associated with the cellular link with the cellular network.

A central unit (CU) transmits synchronization timing information for a multicast broadcast service (MBS) single frequency network (SFN) data transmission in a synchronous manner to multiple distributed units (DUs). The CU transmits the MBS SFN data transmission to the multiple DUs for synchronous transmission to one or more user equipments (UEs). A DU receives synchronization timing information for a MBS SFN data transmission in a synchronous manner with at least one additional DU. The DU transmits the MBS SFN data transmission with a timing based on the synchronization timing information.

A random access method and apparatus, a terminal, and a readable storage medium are provided. The method includes: selecting a target random access channel (RACH) resource associated with a first reference signal or a second reference signal; and using the target RACH resource to initiate random access, where the first reference signal is a single frequency network (SFN) specific reference signal, and the second reference signal is a cell / transmission reception point (cell / TRP) specific reference signal.

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to a user equipment (UE) that transmits an indication of a preferred multi-UE cooperation scheme. In some examples, the UE can transmit the indication of the preferred multi-UE cooperation scheme via UE assistance information (UAI). The indication of the preferred multi-UE cooperation scheme can indicate one or more parameters, such as one or more additional UEs with which the UE supports cooperation and / or a preferred scheme type (e.g., single frequency network (SFN), transmission switching, coordinated multiple-input multiple-output (MIMO), and / or multi-transmission reception point (TRP), etc.).

According to an example implementation, a method for frequency offset reporting includes transmitting, by a first transceiver, a first tracking reference signal to a user device in a wireless communication system, transmitting, by a second transceiver, a second tracking reference signal to the user device, receiving, by the base station, a channel state information (CSI) reporting signal via an uplink channel, where the CSI reporting signal includes power estimation information. The method includes determining whether to pre-compensate a frequency of a downlink signal with frequency offset information based on the power estimation information, and transmitting, by at least one of the first transceiver or the second transceiver, the downlink signal with the pre-compensated frequency in response to the determination to pre-compensate the frequency of the downlink signal.

The embodiment of the present disclosure provides an uplink transmission control method and device, the method comprises: in a single downlink control information DCI scheduling based physical uplink shared channel PUSCH in a simultaneous transmission and multiple panel STxMP scenario, receiving transmission configuration information related to PTRS sent by a network device in a network scheduling multiple transmission and reception point TRP single frequency network SFN transmission mode; for non-codebook based PUSCH transmission, determining the actual sending parameters of the PTRS for PUSCH transmission based on the transmission configuration information related to the PTRS and the preset protocol rules, and sending the PTRS in the SFN transmission mode on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. The scheme provided by the present disclosure can realize the enhanced indication of the SFN transmission of the PTRS, thereby supporting the CPE estimation of the terminal multi-antenna panel in the non-codebook based configuration under the SFN scheme in the STxMP transmission, so that the multi-point cooperative transmission is more effective, and the reliability and throughput of data transmission are effectively improved.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive one or more unified transmission configuration indicator (TCI) state indications for coherent joint transmission operations with more than two unified TCI states per layer of a physical downlink shared channel (PDSCH), wherein the UE is configured for a single frequency network operation for a physical downlink control channel (PDCCH) that applies two TCI states to a control resource set that receives the PDCCH. The UE may select one or more unified TCI states for one or more physical downlink channel communications based at least in part on the one or more unified TCI state indications. The UE may receive the one or more physical downlink channel communications using the selected one or more unified TCI states. Numerous other aspects are described.

An apparatus comprising: means for obtaining, from a network device, precoding information related to at least one of: one or more physical uplink control channel transmissions from one or more antenna arrangements of the apparatus or one or more single frequency network or spatial division multiplexing based physical uplink shared channel transmissions from one or more antenna arrangements of the apparatus; means for determining, based on the precoding information, that one or more precoders associated with the one or more single frequency network or spatial division multiplexing based physical uplink shared channel transmissions are to be applied to one or more physical uplink control channel transmissions at the apparatus; and means for transmitting the one or more physical uplink control channel transmissions to the network device using the one or more precoders.

The application provides a 5G broadcast dynamic single frequency network configuration method based on interference prediction, comprising the following steps: integrating a frequency scanning unit in a 5G broadcast base station; submitting the collected spectrum interference state data to a broadcast control unit based on the link between base stations; dynamically deciding based on the spectrum scanning result and the 5G single frequency network frequency planning, for judging whether the edge terminal user can receive and demodulate the broadcast signal based on the current frequency for 5G broadcast in the most extreme case; informing the 5G broadcast base station of the current single frequency network decision by the broadcast control unit, performing spectrum allocation and resource allocation according to the frequency scheduling instruction after the 5G broadcast base station receives the frequency scheduling instruction; and performing 5G broadcast signal broadcasting on the determined frequency band by the 5G broadcast base station. The application realizes the dynamic configuration of single frequency band single frequency network and multi frequency band single frequency network based on distributed spectrum scanning data, and realizes the accurate coverage of the broadcast area.

A communication method and a communication apparatus are disclosed, related to the communication field. The method includes: A terminal sends data to a network device based on first information sent by the network device. The first information indicates a transmission mode and a plurality of precoding matrices corresponding to a plurality of antenna panels. The transmission mode is a first transmission mode or a second transmission mode. An antenna port set used by each antenna panel of the terminal in the first transmission mode or the second transmission mode is a part of an antenna port set used by the terminal in a third transmission mode. The first transmission mode is an SDM mode, the second transmission mode is an SFN mode, and the third transmission mode is an sTRP mode.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, configuration information that indicates one or more physical uplink control channel (PUCCH) resources that support a single frequency network (SFN) mode. The UE may receive, from the network node, beam information that indicates a plurality of transmission configuration indication (TCI) states to apply to transmit a PUCCH using a PUCCH resource associated with a PUCCH format. The UE may determine a transmission mode in which to transmit the PUCCH based at least in part on the beam information, wherein the transmission mode includes one or more of the SFN mode, a time division multiplexing (TDM) mode, or a single TCI state mode. The UE may transmit, to the network node, the PUCCH using the transmission mode. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, using a first transmit / receive (Tx / Rx) chain, a low-power wake-up signal (LP-WUS) communication, wherein the LP-WUS communication is conveyed via a set of single frequency network (SFN)-type transmissions from a set of transmitters associated with a set of cells. The UE may communicate, using a second Tx / Rx chain, in one or more resources in connection with the LP-WUS. Numerous other aspects are described.

This document describes techniques for configuring Channel State Information (CSI) reporting in wireless communication systems. The disclosed methods and systems support CSI reporting for both Single Frequency Networks (SFN) and Coherent Joint Transport (CJT). An example wireless communication method includes a wireless device receiving a Channel State Information (CSI) reporting configuration from a network node. In this example method, the CSI reporting configuration configures at least one CSI-RS resource in at least one CSI-RS (Reference Signal) resource set or group. The method continues by the wireless device determining the number of CSI processing units (CPUs) based on the CSI reporting configuration and executing a CSI reporting procedure based on the number of CPUs.

A terminal according to one aspect of the present disclosure is characterized by comprising: a reception unit that receives setting information for a Physical Uplink Shared Channel (PUSCH); and a control unit that calculates a Power Headroom Report (PHR) using the maximum transmission power for each TCI state, when a multi-panel simultaneous uplink transmission Single Frequency Network (SFN) method for the PUSCH or a multi-panel simultaneous uplink transmission Space Division Multiplexing (SDN) method for the PUSCH is set. According to one aspect of the present disclosure, PUSCH transmission power control or PHR calculation can be appropriately performed.

A device, such as a UE and a transmit / receive point (TRP), for providing network-assisted frequency offset compensation in a high-speed train single-frequency network (HST-SFN) is disclosed. The device includes a receiver that receives a first reference signal and a second reference signal transmitted from a first TRP via a wireless network. The first reference signal corresponds to the QCL RS of the second reference signal. The device receiver determines delay spread and average delay information of the path between the first TRP and the device based on the first reference signal. The device receiver also receives a third reference signal from the second TRP, which includes Doppler frequency shift and Doppler spread information and corresponds to the QCL RS of a fourth reference signal transmitted from the second TRP, or corresponds to the second reference signal transmitted from the first TRP in an SFN manner.

Methods, systems, and devices for wireless communications are described, the described techniques provide for per-transmission and reception point (TRP) power control for uplink transmissions using a single frequency network (SFN) configuration. A UE that establishes communications with a network via two or more TRPs using an SFN configuration for uplink transmissions may determine respective uplink transmission power levels for uplink transmissions to each TRP. The UE may transmit uplink transmissions to the two or more TRPs in accordance with the determined respective uplink transmission power levels. In some cases, the UE may receive a downlink control information message that includes transmit power command fields for each respective TRP based on transmission configuration indictor states associated with each TRP. In some cases, the UE may determine a set of power control parameters associated with each TRP. In some cases, the UE may transmit power headroom reports for each TRP.

A wireless device receives, from a base station, one or more configuration parameters indicating a single frequency network (SFN) scheme. The wireless device receives, from the base station, a command activating at least two transmission configuration indicator (TCI) states for a control resource set (coreset). The wireless device monitors, via the coreset, downlink control channels based on the at least two active TCI states. The wireless device determines, when the one or more configuration parameters indicate the SFN scheme, a radio link quality based on the at least two active TCI states of the coreset. The wireless device, based on the radio link quality indicating a radio failure, initiates a radio resource control (RRC) re-establishment procedure.

This application provides a transmission mode determining method and apparatus, and a communications device, and pertains to the field of communications. The method includes: determining a single frequency network transmission mode in a target indication manner, where the target indication manner includes one of the following manners: indication by RRC signaling, indication by TCI state, a manner with a configured or indicated target parameter satisfying a predetermined parameter requirement, and indication of a PDCCH using the SFN transmission mode.

User equipment (UE) operation in a single frequency network (SFN). The UE may receive one or more transmission configuration indication (TCI) states corresponding to one or more downlink resources, receive a demodulated reference signal (DMRS) wherein the DMRS is quasi co-located (QCLed) with one or more channel state information reference signal (CSI-RS) from multiple cells of a SFN and quasi co-location (QCL) information is included in the one or more TCI and determine a time and frequency offset corresponding to each of the multiple cells based on the CSI-RS.

The application relates to an analysis method and device of a DTMB-A single frequency network system, wherein the method comprises the following steps: generating MIP packages according to a pre-transmission mode of the DTMB-A and GPS information, and inserting the MIP packages into pre-transmitted service data; meanwhile, the number of service data packages contained in each OFDM frame and the number of zero supplements are calculated according to the pre-transmission mode, so that a service data stream completely matched with a DTMB-A transmission net code rate is obtained; the service data stream and control information are received by each transmission station, each MIP package in the service data stream is taken as the first data package of an OFDM frame, and the time label and the maximum channel delay in the MIP package are extracted to calculate an additional delay; the service data stream and the control information are modulated, a complex frame synchronization channel is generated according to the additional delay, the data frame information and the control frame information are multiplexed, the radio frequency signal corresponding to the multiplexed signal is generated, and the radio frequency signal is broadcasted and simultaneously transmitted. Therefore, the current single frequency network adapter cannot meet the demand of the DTMB-A system single frequency network and other problems are solved.

Embodiments of the present disclosure relate to methods, apparatuses and computer readable storage media for applying of transmission configuration indicator (TCI) states in transmission and reception. An apparatus receives an indication related to at least one TCI state of a plurality of TCI states including a first TCI state and a second TCI state. The apparatus determines whether at least one control resource set (CORESET) is associated with a single frequency network (SFN) mode and / or a repetition mode. Then, the apparatus monitors the at least one CORESET based on the first and / or second TCI state according to the association of the at least one CORESET with the SFN and / or repetition mode.

Disclosed are a processing method, a communication device and a storage medium, aiming to provide a method for determining the TCI state of the PUSCH. The processing method includes: determining the TCI state of the PUSCH based on downlink information. The method relates to the technical field of communication, can be applied to transmission in spatial division multiplexing and single frequency network scheme.