3258results about "Distributed allocation" patented technology

Systems, methods, and instrumentalities are described herein for supporting low power high accuracy positioning (LPHAP). A wireless transmit / receive unit (WTRU) may receive configuration information (e.g., in a radio resource control (RRC) reconfiguration message) from a first cell. The configuration information may indicate a first sounding reference for positioning (SRSp) configuration and a second SRSp configuration. The first SRSp configuration may be associated with a first positioning area and the second SRSp configuration may be associated with a second positioning area. The first positioning area may include a first cell ID set and the second positioning area may include a second cell ID set. The first SRSp configuration may be activated and the second SRSp configuration may be deactivated.

Example embodiments of the present disclosure relate to an effective mechanism for handing the scenario of discontinuous coverage. In this solution, the terminal device generates at least one beam report based on an active transmission configuration indicator (TCI) state of the terminal device, where the terminal device is configured with at least one of a serving cell associated with a first physical cell identity (PCI) and a neighbor cell associated with a second PCI. The terminal device further transmits the at least one beam measurement report in the serving cell or in the neighbor cell. In this way, the number of reporting the useless and unnecessary measurements result is reduced.

Provided is an operation method based on multiple access points (APs), applicable to a first AP device. The method includes: transmitting a first frame to establish a protected predetermined service period based on a multi-AP operation for a first station (STA) device, wherein the protected predetermined service period based on the multi-AP operation is a protected predetermined service period negotiated and established by the first AP device and at least one second AP device.

Various embodiments herein provide techniques for sidelink (SL) communication on unlicensed spectrum. For example, embodiments provide techniques for a physical sidelink feedback channel (PSFCH) and / or a SL synchronization signal block (S-SSB), such as techniques related to a listen-before-talk (LBT) procedure and / or occupied channel bandwidth (OCB) requirements. Other embodiments may be described and claimed.

According to embodiments, a UE receives, from a network device, a configuration of a sounding reference signals (SRS) resource with 8 antenna ports, a transmission comb configuration for the SRS resource, and a cyclic shift (CS) configuration for the SRS resource. The transmission comb configuration indicates a comb value K. K is one of 2, 4, or 8. The transmission comb configuration further indicates a configured comb offset (k). k is an integer between 0 and K−1. The CS configuration indicates CS positions. The UE maps each port of the 8 antenna ports to corresponding resource elements (REs) in the frequency domain and a corresponding CS. The corresponding REs are a subset of a plurality of REs and on every K-th RE with an offset based on the configured comb offset (k) within an SRS transmission bandwidth. The UE transmits SRSs using the 8 antenna ports based on the mapping.

Methods, systems, and devices for wireless communications are described that support uplink reporting techniques for multi transmission-reception point (TRP) transmissions. Various reporting configurations may be provided that allow for user equipment (UE) communications via multiple concurrent wireless connections with multiple TRPs. A UE may identify a reporting configuration and transmit a report (e.g., a buffer status report (BSR) or a power headroom report (PHR)) to one or more of the TRPs based on the identified reporting configuration. The multiple TRPs may have non-ideal backhaul connections and the reporting configuration may allow the UE to transmit separate reports to different TRPs. The different TRPs may then use the separate reports for corresponding communications with the UE. In cases where shared radio frequency spectrum is used for communications, a single channel access priority class (CAPC) for multiple TRPs may be determined for a contention-based channel access procedure.

A Master Node (MN) 110 and a method therein for handling of a Secondary Cell Group (SCG) for a UE 120 operable in a dual connectivity mode with the MN and a Secondary Node (SN) 111 operating in a network 100. A Master Cell Group (MCG) is 5 associated with the MN and the SCG is associated with the SN. The MN decides to perform a first operation relating to a suspension or a resumption of the SCG independently from a second operation relating to a suspension or a resumption of the MCG. The MN transmits, to the UE, an indication indicating the first operation and indicating the second operation. Further, the MN transmits, to the SN, an indication 10 indicating the first operation relating to the suspension or the resumption of the SCG.

Apparatuses, systems, and methods for Unified transmission configuration indicator (TCI) configuration and default beam for multi-beam indication, e.g., in 5G NR systems and beyond, including systems, methods, and mechanisms for supporting cross-cell TCI state list sharing and common TCI ID indication with regard to different multi-TRP operation in different serving cells as well as for determining which TCI to use to buffer data when a scheduling offset is below a threshold when multiple TCI states are indicated (e.g., which TCI state is a default TCI state).

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive first control signaling indicating a demodulation reference signal (DMRS) port mapping configuration for a set of antenna port field values. For each antenna port field value, the DMRS port mapping configuration may include a first mapping between a first codeword corresponding to a first transmission-reception point (TRP) and a first code-division multiplexing (CDM) group, and a second mapping between a second codeword corresponding to a second TRP and a second CDM group. The UE may receive second control signaling that indicates an antenna port field value from the set of antenna port field values. The UE may then receive, based on the antenna port field value, first and second DMRSs including the first and second codewords, respectively, via first and second sets of DMRS ports corresponding to the first and second CDM groups, respectively.

Embodiments of the present disclosure relate to a method and apparatus for multiple transmit-receive points (multi-TRP) transmission. According to an embodiment of the present disclosure, a method can include: receiving first configuration information for uplink phase tracking reference signal (PT-RS) and second configuration information indicating a plurality of sounding reference signal (SRS) resource sets, wherein each of the plurality of SRS resource sets is associated with at least one physical uplink shared channel (PUSCH) repetition; for each PUSCH repetition, determining a number of PT-RS ports for transmitting the uplink PT-RS; and transmitting two or more PUSCH repetitions. Embodiments of the present disclosure can resolve the issues caused by the imbalance numbers of PT-RS ports between different TRPs.

A method performed by a WTRU may include receiving a random access channel (RACH) configuration indicating a plurality of RACH occasions. The RACH occasions within respective subsets are frequency division multiplexed. The method includes receiving configuration information indicating at least one transmit power threshold and information indicating resources associated with a mode of operation, and receiving criteria for selecting a RACH occasion that defines a group of RACH occasions from at least one subset that overlap with at least one uplink subband. The method includes sending a preamble transmission using a calculated transmit power in a selected RACH occasion, wherein, on a condition the calculated transmit power exceeds the transmit power threshold, the selected RACH occasion is selected from the defined group of the plurality of RACH occasions that overlap with the at least one uplink subband.

Disclosed are a method and apparatus for transmitting and receiving a group common signal and channel in a wireless communication system. The method performed by a terminal in a wireless communication system, according to an embodiment of the present disclosure, may comprise the steps of: receiving configuration information regarding one or more TCI states; receiving information related to activation or inactivation of at least one TCI state from among the one or more TCI states; and receiving a specific value via DCI for scheduling a PDSCH. Here, on the basis that a TCI state mapped to the specific value is activated, the PDSCH may be received on the basis of the TCI state, and on the basis that the TCI state mapped to the specific value is inactivated, the DCI may be ignored by the terminal.

The disclosure relates to a communication technique and system therefor for converging an Internet of Things (IoT) technology and a 5th generation (5G) communication system for supporting a high data rate after a 4th generation (4G) system. The disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security, and safety services) based on a 5G communication technology and IoT-related technology. The disclosure provides a method and apparatus for uplink (UL) data repetition transmission by a user equipment (UE) in a next-generation communication system.

A method performed by a user equipment, UE, the method comprising: executing (601) a serving cell change procedure from a source cell provided by a first network node to a target cell provided by a second network node, wherein the serving cell change procedure is performed using lower layer signalling; and in response to executing the serving cell change procedure, performing (602) one or more of: (i) transmitting a serving cell change indication to the second network node indicating that the serving cell change has been executed; (ii) monitoring a downlink control channel in the target cell for scheduling of user data in a downlink to the UE; and (iii) transmitting a scheduling request in the target cell for scheduling of user data in an uplink from the UE.

The present disclosure is generally related to wireless communications technologies, network topologies, and communication device implementations, and in particular, to multipletransmission reception point (multi-TRP) uplink (UL) transmission schemes. The multi-TRP UL transmission schemes include timing advance (TA) associations for multi-TRP operation, channel state information (CSI) enhancements, and codebook structural enhancements. To enhance the performance of Rel-16 codebook, a new codebook structure is constructed by preserving the Rel-16 codebook structure in the spatial dimension (SD) and frequency dimension (FD) while extending the Rel-16 codebook in the time dimension (TD) using a mutually orthogonal Discrete Fourier Transform (DFT) basis.

Disclosed are a method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.

A wireless device receives one or more radio resource control (RRC) messages comprising configuration parameters indicating a first set of reference signals (RSs) for a first beam failure detection of a primary cell, a second set of RSs for a second beam failure detection of the primary cell, and a scheduling request (SR) configuration for reporting a beam failure detected on the second set of RSs. The first set of RSs is associated with a first group index and the second set of RSs is associated with a second group index. Based on the second beam failure detection on the second set of RSs, the wireless device transmits, using the SR configuration, a physical uplink control channel (PUCCH) transmission with a recovery request associated with the second set of RSs.

The disclosure pertains to methods and apparatus for enabling single DCI scheduling of multiple cells. A method implemented in a wireless transmit / receive unit (WTRU), includes receiving, by the WTRU, a single downlink control information (DCI). The method additionally includes determining, by the WTRU, scheduling of multiple cells based on the single DCI. The method also includes performing wireless communications, by the WTRU, based on the determination.

A method and device for monitoring signals in a wireless communication system disclosed in the present application can monitor a PDCCH candidate for a DCI format on the basis of a search space set configuration. The DCI format is monitored on a scheduling cell and schedules PDSCHs or PUSCHs on a plurality of scheduled cells.

Disclosed are a signal receiving method, a signal sending method, a device and storage medium. The signal receiving method comprises: in response to N control channels at a same time instance colliding, determining a priority of a quasi-co-location reference signal set of the N control channels according to a resource index of a control channel resource where each control channel of the N control channels is located and a feature of each control channel of the N control channels, wherein N is an integer greater than or equal to 2, the feature of each control channel indicates whether the control channel is a shared control channel or a dedicated control channel; and receiving one or more of the N control channels according to the determined priority of the quasi co-located reference signal set.

A user equipment (UE) having PC5-RRC connection with other UE is described. The UE may comprise transmission circuitry configured to transmit, to the other UE, a reference signal for sidelink positioning; and higher layer processing circuitry configured to acquire a PC5-RRC message including a measurement result of sidelink positioning.

Methods and apparatuses for dynamic switching between single-TRP and multi-TRP based PUSCH schemes are disclosed. In one embodiment, a UE comprises a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to receive, via the transceiver, a higher layer parameter to indicate the multi-panel / TRP PUSCH scheme, a configuration of one or two SRS resource sets for CB or nCB in a BWP of a cell, and a DCI scheduling a PUSCH transmission, wherein, the one or two SRS resource sets are associated with a first UL TCI state and a second UL TCI state; and determine UL TCI state(s) applied to the scheduled PUSCH transmission according to the higher layer parameter and fields contained in the DCI, depending on the configuration of one or two SRS resource sets for CB or nCB.

An apparatus and system of supporting simultaneous transmission over multi-panel (STxMP) uplink (UL) transmissions are described. At least one downlink control information (DCI) is used to schedule STxMP UL transmission to multiple transmit-receive points (TRPs). The DCI indicates whether time domain (TD) repetition is to be applied, in addition to time domain and / or frequency domain resource location for different multiplexing schemes. Aperiodic-channel state information (A-CSI) or semi-persistent CSI (SP-CSI) multiplexing is multiplexed within one or more of the repetitions. One or more sounding reference signal (SRS) resource indication (SRI) fields in the DCI indicate the SRS resources to use for the transmission. Mechanisms of physical uplink control channel (PUCCH) resource configuration are described for STxMP operation.

A method by which a terminal operates in a wireless communication system, according to one embodiment, comprises the steps of: receiving time difference of arrival (TDoA) slots from anchor nodes (ANs); and measuring the position of the terminal by using the TDoA slots, wherein the TDoA slots include control information of the ANs and positioning reference signals (PRSs) of the ANs.

Methods, systems, and devices for wireless communications are described. In some systems, a base station may transmit a slot format indicator (SFI) to a first user equipment (UE) via downlink control information (DCI) and the first UE may use the SFI to determine time-domain resources over which the first UE may measure cross link interference (CLI) arising from a transmission from a second UE. The first UE may use the SFI as an index into a slot format combination table, which may also be used for uplink and downlink scheduling or may be exclusively used for determining the time-domain resources for CLI measurement. The first UE may determine a set of slot formats from a slot format table based on a slot format combination corresponding to the SFI index and may determine over which symbols the first UE may measure CLI based on the set of slot formats.

Disclosed are a method and device for channel allocation in multi-access point operation in a wireless LAN system. A method performed by a first access point (AP) in a wireless LAN system according to an embodiment disclosed herein may comprise the steps of: transmitting channel-related information of the first AP to a second AP; receiving resource allocation information, related to multi-access point operation, from the second AP; and exchanging frames, with one or more STAs associated with the first AP, on a specific resource based on the resource allocation information.

A method, network node and wireless device (WD) for downlink (DL) pre-compensation and quasi-collocated (QCL) signaling for coherent joint transmission are disclosed. According to one aspect, a method in a network node includes transmitting (S144) a first reference signal (RS) over a first transmission-reception point (TRP) and a second RS over a second TRP. The method includes receiving (S146) time delay difference and / or a frequency difference information between the TRPs. The method includes transmitting (S148) the DL channel with a delay pre-compensation and / or a frequency pre-compensation over the first TRP and without delay or frequency pre-compensation over the second TRP. The method includes transmitting (S150) QCL information indicating whether a DL channel transmitted from the first and second TRPs is pre-compensated. The method further includes pre-compensating (S152) the DL transmission over the first TRP according to the received time delay difference or frequency difference.