Abstract: An embodiment method for grant-free resource configuration comprises configuring a first type of grant-free resource, wherein the first type of grant-free resource is cell-specific and is configured using broadcast signaling, and wherein the first type of grant-free resource is accessible to a UE without further configuration; and configuring a second type of grant-free resource, wherein the second type of grant-free resource is UE-specific and is configured using a combination of broadcast signaling and unicast/multicast signaling, and wherein the second type of grant-free resource is accessible to a UE only after the unicast/multicast configuration.

Abstract: A method and apparatus to configure grant-free transmission resources are provided. At least two configuration options can co-exist for configuring the grant-free transmission resources. The base station may explicitly or implicitly notify a user equipment which option is selected for grant-free transmission by that user equipment.

Abstract: In an embodiment, a receiver included in a communications system includes a channel extractor configured to segregate a received signal into a plurality of channel signals, wherein the plurality of channel signals includes a plurality of data signals; and a plurality of decoders electrically coupled to the channel extractor and configured to decode each of the plurality of channel signals into a respective plurality of decoded data beam portions.

Abstract: The present disclosure describes various aspects of the implementation and design of Physical Downlink Control Channel (PDCCH) in 5G new radio (NR) applications. Aspects include methods, apparatuses, and computer-readable medium for one or more of multiple PDCCH search spaces, control resource block (CRB), irregular multiple slots or mini-slots grants, or fast control channel signaling for grant-free uplink (UL). For example, different scheduling entities can each have one or two search spaces defined (e.g., common and/or user equipment (UE)-centric search spaces). Also, CRBs can be used as units for PDCCH transmission instead of resource element groups/control channel elements (REGs/CCEs). In addition, irregularities in time domain, frequency domain, or both can be introduced in the granting of resource blocks (RBs) over multiple slots or mini-slots. Moreover, signaling can be used to indicate to a UE configured for grant-free UL the portion of the pool of resources available for grant-free UL.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for transmitting sounding reference signals (SRS) in communications systems operating according to new radio (NR) technologies. An exemplary method that a user equipment (UE) may perform includes determining whether to transmit a sounding reference signal (SRS) using a discrete Fourier transform (DFT) spread orthogonal frequency domain multiplexing (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency domain multiplexing (CP-OFDM) waveform, and transmitting the SRS using the determined waveform.

Abstract: A terminal and base station are disclosed where the terminal includes a receiver that receives a signal of a downlink shared channel and a processor that controls reception of a demodulation reference signal included in the downlink shared channel. The processor controls reception of a demodulation reference signal based on one of a first mapping method or a second mapping method. The first mapping method being a method in which the demodulation reference signal is mapped to a fixed symbol within a slot of the downlink shared channel, and the second mapping method being a method in which the demodulation reference signal is mapped to a top symbol of symbols for which the downlink shared channel is scheduled.

Abstract: In accordance with an example embodiment of the invention there is at least a method and apparatus to perform determining, by a network node, that at least one of frequency tuning, bandwidth part switching, or bandwidth switching is to be performed by at least one user equipment; and based on the determining, sending, by the network node, to the at least one user equipment one or more downlink slots, wherein the one or more downlink slots provide an indication of a time to perform the at least one of frequency toning, bandwidth part switching, or bandwidth switching by the at least one user equipment.

Abstract: A base station transmits a signal including mobile broadband (MBB) communication resources that contains mobile broadband (MBB) data for an MBB user equipment (UE) device and narrowband (NB) data for an NB UE device where the two devices are in the same geographical location. The time-frequency and spatial communication resources of the MBB communication resources are identified in control information directed to each device. The control information is transmitted to the MBB device over a MBB physical downlink control channel defined by a communication specification to have a first number of subcarriers. The control information is transmitted to the MBB device over a narrowband physical downlink control channel defined by the communication specification to have a second number of subcarriers less than the first number of subcarriers.

Abstract: A time-frequency resource preemption determining method includes: receiving and reading first service data sent by the base station; if it is determined that the first service data fails to be received, reading second service scheduling control data in a set time period and in a set frequency range according to a time-frequency resource occupied by the first service data that fails to be received; and if the second service scheduling control data is read, and it is determined according to scheduling information carried in the second service scheduling control data that a time-frequency resource area occupied by the scheduled second service data covers a time-frequency resource area occupied by the first service data that fails to be received, determining that the second service data preempts the time-frequency resource of the first service data. As such, the situation of time-frequency resource preemption between service data can be determined.

Abstract: A modulation and coding scheme (MCS) notifying method is provided. The method includes: learning, by a terminal, a first channel quality indicator (CQI) index according to a first CQI table, and sending the first CQI index to a base station; receiving, by the base station, the first CQI index sent by the terminal device, determining a first MCS index according to the first CQI table, a first MCS table, and the received first CQI index, and sending the determined first MCS index to the terminal device; and receiving, by the terminal, the first MCS index sent by the base station, and determining a modulation order and a code block size according to the first MCS table and the received first MCS index, where the first CQI table includes an entry in which a modulation scheme is higher than 64QAM.

Abstract: A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {fn} consisting of N elements, fn is an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition; then, the N elements in the sequence {fn} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.

Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device transmits a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmits an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.

Abstract: The present disclosure relates to a wireless communication system, and a method, performed by a terminal, of transmitting and receiving control information in a wireless communication system according to an embodiment may include receiving, from a base station, an indication of whether to perform dynamic precoding resource block (PRB) bundling through higher layer signaling and, when the dynamic PRB bundling is indicated, dynamically determining a size of a precoding resource block group (PRG) based on downlink control information (DCI).

Abstract: The present invention relates to methods and apparatus for managing uplink resource grants in wireless networks. An exemplary method embodiment includes the steps of: communicating resource grants to individual customer premise equipment (CPE) devices, the resource grants including at least a first resource grant to a first CPE device and a second resource grant to a second CPE device, the first resource grant giving the first CPE device the right to use a first set of resource blocks on a recurring basis, said second resource grant giving the second CPE device the right to use a second set of resource blocks on a recurring basis; monitoring the use of resource blocks granted to the first and second CPE devices during a first period of time; using stored resource utilization information to determine resource grants which are to be shared by the first and second CPE device.

Abstract: According to one embodiment, a terminal device receives downlink control information that is sent by a network device and that indicates a first physical downlink control channel (PUCCH), where the first PUCCH and a second PUCCH occupy a same first time-domain symbol, and the first PUCCH and a third PUCCH occupy a same second time-domain symbol; and the terminal device sends the first PUCCH, where the first PUCCH carries a first sequence and a second sequence, a cyclic shift of the first sequence is determined based on a hybrid automatic repeat request-acknowledgment (HARQ-ACK) value and state information of a scheduling request (SR) corresponding to the second PUCCH, and a cyclic shift of the second sequence is determined based on the HARQ-ACK value and state information of an SR corresponding to the third PUCCH. An HARQ-ACK and a plurality of SRs can be multiplexed on a same PUCCH improving communication efficiency.

Abstract: An embodiment of this application provides a downlink control information transmission method and an apparatus. The method includes: receiving first downlink control information DCI in search space of a first carrier bandwidth part BWP, where if a frequency domain resource allocation type of the first BWP is a type 0, an Lf-bit frequency domain resource allocation indication in the first DCI is an Lf-bit bitmap, and bits in the Lf-bit bitmap in descending order are respectively corresponding to resource block groups RBG 0 to RBG (Lf?1) in a second BWP; and for one bit in the Lf-bit bitmap, when a value of the bit is t1, an allocated resource includes one RBG corresponding to the bit.

Abstract: A terminal apparatus includes a receiver configured to receive a PDCCH including a DCI format, and a transmitter configured to transmit a PUCCH. In a case that the DCI format schedules a PDSCH and that a last OFDM symbol of the PDSCH is mapped in a first slot, the PUCCH is transmitted in a second slot, the number of slots from the first slot to the second slot is given based on a PDSCH-to-HARQ-timing-indicator field, and a length of each of the slots is given based on a subcarrier spacing configuration of the PUCCH.

Abstract: Providing for time sensitive networking (TSN) traffic in high density deployments is described. An access point (AP) is a high density deployment receives a message identifying another AP as a TSN neighbor and also detects a TSN device within an area covered by the APs. This arrangement may cause traffic interruptions for the TSN traffic between the TSN device and the APs. In order to prevent disruption in TSN traffic, a TSN time slot and a resource unit (RU) is determined for each of the APs, and the TSN traffic is communicated between the various devices in network according to the determined TSN time slot and RU.

Abstract: This application provides a communication method and apparatus. The method includes: implicitly indicating a quantity of time units for transmitting a data channel and a quantity of times of retransmission of the data channel by using a size of a resource for transmitting a control channel.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a network node receives a reference signal comprising a plurality of time and frequency resources, the plurality of time and frequency resources spanning a plurality of disjoint bandwidth segments, the plurality of disjoint bandwidth segments being time aligned or having a known time offset with respect to each other, and determines a time of arrival (ToA) of the reference signal based on jointly processing the plurality of time and frequency resources of the reference signal across the plurality of disjoint bandwidth segments.

Abstract: A wireless communication method is executed by a wireless communication system including one or more wireless terminals and a wireless communication apparatus. The wireless communication apparatus generates wireless scheme schedule information, which is information related to a schedule of a slot allocated to an uplink signal and a downlink signal of a predetermined wireless scheme, generates a downlink signal to be transmitted in the slot to the wireless terminal based on the wireless scheme schedule information, and transmits a beacon signal including the wireless scheme schedule information in the slot. The wireless terminal receives the beacon signal, in the slot, acquires the wireless scheme schedule information from the beacon signal, and generates an uplink signal to be transmitted in the slot to the wireless communication apparatus, based on the wireless scheme schedule information.

Abstract: Devices and methods of enhancing narrowband communications are generally described. NPSS and NSSS are modulated to include an additional bit that indicates a duplexing scheme, a raster frequency offset (zero or non-zero), an operating mode (in-band or standalone/guard-band) or frame timing used by the eNB. The NPSS modulation uses conjugate ZC sequences multiplied by a cover code for each OFDM symbol. The NMIB may provide additional information related to the operating mode or offset. NSSS cyclic shifts may be used to indicate the offset or TDD/FDD use, as may relative locations of the NPSS and NSSS. The NSSS may use symbol-level modulation and time domain cyclic shifts to indicate the frame timing.

Abstract: Wireless communications systems and methods related to performing random access procedures. A base station (BS) receives, from a user equipment (UE), a plurality of random access preambles from a plurality of beam directions, wherein each of the plurality of random access preambles is received from a different beam direction, and wherein the plurality of random access preambles are associated with multiple random access opportunities of a random access attempt. The BS sends, in response to the plurality of random access preambles, a plurality of random access response (RAR) messages in the plurality of beam directions.

Abstract: Methods, systems, and devices are described for providing network access services to mobile users via mobile terminals over a satellite system. In embodiments, dynamic multiplexing of traffic from fixed terminals and mobile users on the same satellite beam can take advantage of statistical multiplexing of large numbers of users and on different usage patterns between fixed terminals and mobile users. In embodiments, quality-of-service (QoS) is controlled for mobile devices at a per-user level. Mobile users may be provisioned on the satellite system according to a set of traffic policies based on their service level agreement (SLA). System resources of the satellite may be allocated to mobile users based on the demand of each mobile user and the set of traffic polices associated with each mobile user, regardless of which mobile terminal is used to access the system.

Abstract: Embodiments of the present disclosure provide a method of performing transmission between a base station and a terminal device according to a frame structure over an unlicensed spectrum in a wireless network that supports communications over both a licensed spectrum and the unlicensed spectrum. The method comprises signaling information indicating the frame structure and performing transmission between the base station and the terminal device on an unlicensed carrier in the unlicensed spectrum according to the frame structure. There is also provided the corresponding apparatus.

Abstract: A format that includes a BSSID of a transmitting station within a preamble of the frame is an HE format, and a format that does not include a BSSID within the preamble but includes a BSSID in a MAC header is a Non-HE format; and a wireless station in the BSS includes a control part which checks a format of a frame received at a predetermined receiver sensitivity or above, and continues demodulation of the received frame if the format is HE format and the BSSID in the received frame is consistent with its own BSS, and stops the demodulation of the received frame if the HE format and the BSSID in the received frame is not consistent with its own BSS.

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may identify a reference signal sequence (e.g., a demodulation reference signal (DMRS) sequence) based on a cyclic shift associated with a control channel for communications with a second wireless device. For example, the first wireless device may identify the cyclic shift associated with transmitting a message to the second wireless device via the control channel. In another example, the first wireless device may estimate the cyclic shift associated with receiving a message from the second wireless device via the control channel. The first wireless device may then communicate with the second wireless device based on the reference signal sequence. For example, the first wireless device may transmit or receive (e.g., via a shared channel) the reference signal sequence to or from the second wireless device.

Abstract: Facilitating improvements to the uplink performance in a communications network is provided herein. A system can comprise a processor and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations. The operations can comprise comparing respective metrics of a group of frequency hopping patterns based on a channel response received from a mobile device via uplink reference signals. The operations can also comprise selecting a frequency hopping pattern from the group of frequency hopping patterns based on a result of the comparing. Further, the operations can comprise indicating, to the mobile device, an index of the frequency hopping pattern with scheduling information of a communications network.

Abstract: Disclosed is a data transmission method, including: determining, on pre-divided contention access-based resources for data transmission, contention resources for data transmission; and performing resource contention on determined contention resources, and transmitting data on the resource obtained by the contention.

Abstract: A method for receiving downlink control information is provided. The method includes receiving configuration information comprising a bit-map corresponding to a set of time occasions that are separated by a same interval; identifying at least one time occasion to monitor a candidate physical downlink control channel (PDCCH) on at least one search space; and decoding the candidate PDCCH in the identified at least one time occasion for obtaining the downlink control information.

Abstract: In one aspect, performing, by a wireless communication device, a non-coherent encoding operation on first data to generate a first transmission, wherein the non-coherent encoding operation encodes data independent of channel state information (CSI); and transmitting, by the wireless communication device, the first transmission, wherein the first transmission is non-coherently encoded. In another aspect, receiving, by a wireless communication device, a first transmission, wherein the first transmission is non-coherently encoded independent of channel state information (CSI); and performing, by the wireless communication device, a non-coherent decoding operation on the first transmission to decode the first transmission. Other aspects and features are also claimed and described.

Abstract: A voice coding rate is selected for a voice call involving a user equipment (UE) device based on an air interface efficiency of the base station serving the UE device. The air interface efficiency of the base station is determined based on at least one of (i) a beamforming capability of the base station, (ii) a multi-user multiple-input multiple-output (MU-MIMO) capability of the base station, or (iii) an antenna configuration of the base station. The voice coding rate could be selected by either the UE device or by the base station. The UE device transmits to the base station during the voice call one or more voice frames that convey voice data coded at the selected voice coding rate. During the voice call, a new air interface efficiency may be determined, and a new voice coding rate may be selected based on the new air interface efficiency.

Abstract: A method for acquiring system information, a method for transmitting system information, a terminal, a network reception and transmission node and a storage medium are provided. The method for acquiring the system information includes: receiving a synchronization signal transmitted from a network reception and transmission node, and acquiring feature information of the synchronization signal, node information of the network reception and transmission node and a correspondence between the feature information and a transmitting position of the system information; acquiring the transmitting position of the system information corresponding to the node information based on the feature information and the correspondence; and receiving, at the transmitting position of the system information, the system information transmitted from the network reception and transmission node.

Abstract: A network element for use in a mobile communications system and a method of using a network element for communicating data to/from mobile communications devices in a mobile communications system. The network element can provide a wireless access interface for communicating data to/from the mobile communications devices, the wireless access interface including: on a downlink a host carrier, the host carrier providing plural resource elements across a first frequency range; transmit data for a first group of mobile communications devices, wherein the data is distributed within the plural resource elements across the first frequency range; a virtual carrier via the wireless access interface, the virtual carrier providing one or more resource elements within a second frequency range which is within and smaller than the first frequency range; and transmit data for a second group of mobile communications devices via the virtual carrier.

Abstract: Methods, systems, and devices for wireless communications are described. A base station and a user equipment (UE) with a defined capability may communicate using beamformed wireless communications. The defined capability may be that the UE may support fewer activated physical downlink shared channel (PDSCH) transmission configuration indicator (TCI) states than activated control resource set (CORESET) TCI states. The defined capability UE and the base station may implement techniques to determine which TCI state to use when the UE supports fewer activated PDSCH TCI states than activated CORESET TCI states. The UE may use an activated PDSCH TCI state selected by a media access control (MAC) control element (CE), an activated TCI state of a specific CORESET, a TCI indicated in scheduling downlink control information, or an activated PDSCH TCI state selected by a radio resource control (RRC) message.

Abstract: Systems and methods for mixed space time and space frequency block coding are provided. In some embodiments, a method of operating a first node in a wireless communication network for providing time and frequency diversity includes precoding modulation symbols intended for a second node according to two antenna ports on which they are to be transmitted. In a first subset of Orthogonal Frequency-Division Multiplexing (OFDM) symbols, mapping the precoded modulation symbols to resource elements starting first with indices corresponds to frequency. In a different subset of OFDM symbols, mapping the precoded modulation symbols to resource elements in any two adjacent OFDM symbols starting first with indices corresponds to time. In this way, transmission efficiency may be increased by not having any resource elements unused. Additional flexibility for precoding may also be provided when there is no symbol pair mapped to resource elements across two resource blocks.

Abstract: This disclosure provides methods, devices and systems for sharing time resources of a wireless medium. Particular implementations relate more specifically to coordinated AP (CAP) time-division-multiple-access (TDMA) techniques for sharing the time resources of a transmission opportunity (TXOP). According to such techniques, a coordinated AP that wins contention and gains access to the wireless medium for the duration of a TXOP may share its time resources with other coordinated APs. To share its time resources, the winning AP may partition the TXOP into multiple TXOP segments each including respective time resources representing a sub-duration of the TXOP. For example, the winning AP may assign, grant or allocate (hereinafter used interchangeably) itself one or more of the time resources and also allocate each of one or more remaining time resources to one or more other ones of the coordinated APs.

Abstract: In an example, a User Equipment (UE) monitors a first Physical Downlink Control Channel (PDCCH), via a first spatial Quasi-Colocation (QCL) assumption associated with a first Transmission Configuration Indicator (TCI) state, on a first monitoring occasion of a first Control Resource Set (CORESET). The UE monitors a second PDCCH, via a second spatial QCL assumption associated with a second TCI state, on a second monitoring occasion of a second CORESET. The UE determines an interval between a reference monitoring occasion and a scheduled Physical Downlink Shared Channel (PDSCH), wherein the reference monitoring occasion is a last monitoring occasion of the first monitoring occasion and the second monitoring occasion.

Abstract: Disclosed are a method and an apparatus for measuring signal quality in a wireless communication system.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a transmission point, a first positioning reference signal (PRS) muting pattern for a first subgroup of PRS resources of a first PRS resource set, wherein the first PRS muting pattern comprises a plurality of N bits representing a plurality of N PRS occasions of the first subgroup of PRS resources, wherein each bit of the plurality of N bits represents a corresponding PRS occasion of the plurality of N PRS occasions of each PRS resource of the first subgroup of PRS resources, and wherein the plurality of N PRS occasions comprises a plurality of active PRS occasions of the first subgroup of PRS resources, and measures, during at least one of the plurality of active PRS occasions of the first subgroup of PRS resources, PRS received from the transmission point.

Abstract: Apparatuses, methods, and systems are disclosed for transmission beam indicating. One apparatus (200) includes a transmitter (210) that transmits (902) information using multiple transmission beams. The apparatus (200) also includes a receiver (212) that receives (904) a feedback message indicating a transmission beam of the multiple transmission beams. The feedback message is received in response to transmitting the information. The transmitter (210) transmits (906) a message using the transmission beam in response to receiving the feedback message.

Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-generation (4G) communication system such as long term evolution (LTE). An apparatus and a method for managing uplink control channels in a wireless communication system are provided. The operating method of a base station includes transmitting configuration information for a carrier aggregation (CA) operation using a first carrier and a second carrier, and transmitting a message for activation or deactivation of an uplink control channel in the second carrier based on an electric field strength of a channel with a terminal or a location of the terminal during the CA operation according to the configuration information.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may identify location data associated with a physical location of the transmitting device. The transmitting device may identify a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location data associated with the physical location of the transmitting device. The transmitting device may generate a sequence based at least in part on the portion of the location data, or the slot, or the time-frequency resource, or a combination thereof. The transmitting device may encode a signal using the sequence. The transmitting device may transmit the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

Abstract: Embodiments of this application relate to a resource configuration method, a terminal device, and a network device. The method includes: determining a frequency domain offset between a plurality of transmission resource chunks allocated by a network device, where the frequency domain offset is a frequency domain offset between a first transmission resource chunk and a second transmission resource chunk, and the first transmission resource chunk and the second transmission resource chunk are any two consecutive resource chunks on an uplink transmission in the plurality of transmission resource chunks; and determining the plurality of transmission resource chunks according to the frequency domain offset, wherein the plurality of transmission resource chunks are configured for a frequency hopping transmission.

Abstract: Certain aspects of the present disclosure relate generally to wireless communications systems, and more particularly, to improving efficiency of bandwidth part (BWP) switching.

Abstract: [Object] To achieve communication between terminal devices in a more preferred aspect even in a situation in which wireless access technologies in which definition of resources is different are multiplexed in a communication system in which a base station device and terminal devices communicate with each other. [Solution] A communication device includes: a communication unit configured to perform wireless communication; a control unit configured to allocate a resource to each of a first channel for transmitting control information and a second channel for transmitting data in communication between a plurality of terminal devices; and a notification unit configured to notify at least any terminal device among the plurality of terminal devices of information regarding the resource.

Abstract: A terminal device for a wireless communication network is configurable with a plurality of transmission time intervals. An example method comprises: receiving a grant message comprising an indication of radio resources in which the terminal device can transmit one or more wireless messages, the radio resources being configured according to a first transmission time interval of the plurality of transmission time intervals; determining the presence of data to transmit, the data being associated with a logical channel; determining a maximum transmission time interval associated with the logical channel; and, responsive to a determination that the maximum transmission time interval associated with the logical channel is less than the first transmission time interval, transmitting a scheduling request message. The scheduling request message is configured according to a second transmission time interval of the plurality of transmission time intervals, shorter than the first.

Abstract: Accordingly the embodiments herein provide a method for provisioning Minimum System Information (MSI) for User Equipment (UE) in a wireless communication system. The method includes decoding Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) periodically transmitted by base station. Further, the method includes determining to perform one of bar a cell from which the first MIB is acquired for a pre-determined period of time and acquire second MIB transmitted on Secondary Broadcast Channel (SBCH) by base station based on cell barring indication received in the first MIB. Furthermore, the method includes transmitting a request message to the base station to obtain at least one SI block of the OSI. In some embodiments, the method includes receiving a list of system configuration indexes (SCIs) and corresponding configuration of SI blocks, from the base station based on SI storage capability of the UE indicated to the base station.

Abstract: Embodiments of this application provide a signal transmission method and apparatus. The method includes: receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to instruct the terminal device to send a reference signal, and a resource used to transmit the reference signal is determined based on a public cell identity of a cell to which the terminal device belongs; and sending, by the terminal device, the reference signal based on the configuration information by using the resource. According to the signal transmission method and apparatus in the embodiments of this application, an existing reference signal can be used to perform interference/channel measurement between terminal devices, so that a terminal device on a receiving side can distinguish between interference cells while reference signal utilization is improved.

Abstract: Various aspects of the present disclosure generally relate to wireless communication in a shared spectrum. In some aspects, a user equipment may receive an indication of a set of starting offsets for an uplink communication, wherein the set of starting offsets includes at least one negative starting offset relative to a start of a slot or a mini-slot in which the uplink communication is configured to start; select a starting offset from the set of starting offsets; and transmit the uplink communication, wherein the uplink communication starts at a time indicated by the selected starting offset. Numerous other aspects are provided.