221 results about "Shared spectrum" patented technology

A method for channel access and occupancy in a shared spectrum by a user equipment (UE), includes using, by the UE, a sensing starting position and / or a sensing length to gain access to a shared / unlicensed channel and performing, by the UE, sidelink (SL) transmission in a portion of a guard period (GP) symbol within a SL time slot to occupy a bandwidth of the shared / unlicensed channel.

Proposed are a method by which a first device performs wireless communication, and a device supporting same. For example, the first device may acquire information related to a resource set within a shared spectrum. For example, the first device may perform LBT relating to a first resource set within the shared spectrum. For example, on the basis of a failure of the LBT, the first device may initiate an LBT timer related to the failure of the LBT. For example, the first device may trigger a consistent LBT failure related to the first resource set on the basis that a counter related to the failure of the LBT reaches a threshold before the LBT timer expires. For example, the first device may trigger a MAC reset related to a sidelink connection on the basis of the triggering of the consistent LBT failure related to the first resource set.

A wireless device receives configuration parameters indicating: a sidelink resource pool of a sidelink bandwidth part configured in a shared spectrum, one or more resource blocks for a physical sidelink feedback channel transmission via the sidelink resource pool, and a first common interlace index, among a plurality of common interlace indexes, configured for the PSFCH transmission via the sidelink resource pool. The wireless device determines multiple common RBs of a first common interlace corresponding to the first common interlace index. An index of each of the multiple common RBs is based on: an interlaced RB index corresponding to the first common interlace index, and a first common RB index indicating a starting RB of the sidelink BWP. The wireless device transmits, during a PSFCH slot, one or more sidelink transmissions via at least one RB of the one or more RBs, and via the multiple common RBs.

A user equipment (UE) may transmit a configured-grant uplink control information (CG-UCI) to a base station during a channel occupancy time (COT) initiated by the UE in a shared spectrum, the CG-UCI comprising COT sharing information, the COT sharing information indicating, at least, an index value corresponding to a combination of: an indication of an offset to a beginning of a downlink transmission opportunity during the COT; an indication of a duration of the downlink transmission opportunity during the COT; and an indication of a channel access priority class (CAPC) value used by the UE to initiate the COT. The base station may transmit a downlink transmission to the UE within the downlink transmission opportunity and in accordance with the COT sharing information in the transmitted CG-UCI. Apparatuses are also disclosed.

A wireless device transmits a multiple consecutive slots transmission (MCSt) via consecutive slots, wherein a quantity of the consecutive slots is based on a channel occupancy time (COT) duration of a COT.

A method by which a first device performs wireless communication and an apparatus supporting the method are provided. The method may comprise the steps of: acquiring information related to a resource block (RB) set in which a channel access procedure is performed in a shared spectrum, acquiring a threshold for adjusting a transmission parameter; performing channel sensing on the RB set; determining the transmission parameter on the basis of a result of the channel sensing for the RB set and the threshold; and performing sidelink (SL) communication with a second device on the basis of the transmission parameter.

Automated communication channel selection is provided. A method, system, and computer readable storage device automatically perform a discovery process of a MoCA® network, to determine a topology of the network, perform a spectrum analysis of a DOCSIS® network of which a portion of the frequency range may be shared, apply one or more business rules to the collected network and spectrum usage data, and determine an optimized channel configuration for transmitting data to end devices in a local network. For example, the channel configuration may be configured for optimal bandwidth allocation, transmission speeds, signal quality, etc., without interferences within the shared frequency spectrum range. A gateway device may include a filter that can be reconfigured as an all-pass filter or as a variable low-pass filter based on the channel configuration determination. The MoCA® network may be reconfigured to operate within a defined frequency range based on the determined channel configuration.

Provided are a communication method and a communication device, the method comprising: receiving first information from a network device through a first RAT, the first information being used for indicating a time-frequency resource of an SSB of a second RAT; the PDSCH from the network equipment is received through the first RAT, and the time-frequency resource of the SSB of the second RAT is not used for transmitting the PDSCH. Through the method, the network equipment can indicate the time-frequency resource of the SSB of the second RAT to the terminal equipment through the first RAT, so that the first RAT and the second RAT can share a frequency spectrum.

Apparatuses and methods related to coexistence of wireless systems in shared spectrum in a wireless communication system. A method for a user equipment (UE) includes receiving a master information block (MIB) that indicates a control resource set (CORESET) for receptions of physical downlink control channels (PDCCHs), receiving a first PDCCH in the CORESET, and receiving a second PDCCH in the CORESET. The first and second PDCCHs provide a first and second downlink control information (DCI) formats, respectively, that schedule reception of first and second physical downlink shared channel (PDSCHs), respectively. The method further includes determining to receive the first PDSCH when the UE operates according to a first radio access technology (RAT) or to receive the second PDSCH when the UE operates according to a second RAT and receiving the first PDSCH or the second PDSCH.

The invention relates to a shared spectrum management method and system based on virtual carrier sensing. The method comprises the following steps: S1, constructing a preliminary spectrum resource map based on audiometry results; s2, virtually slicing a physical channel into a plurality of virtual channels according to the initial spectrum resource map, the system service flow classification, spectrum resources, interference and flow conditions, mapping service types to the corresponding virtual channels, and configuring an independent VCS / NAV parameter space for each channel to obtain a virtual channel division table and VCS / NAV parameters distributed by the virtual channel division table; s3, judging that the target virtual channel is physically idle and an NAV timer is zero according to a service requirement and VCS / NAV parameters of the target virtual channel, and constructing and broadcasting a control frame containing an NAV field; and S4, according to all received NAV control frames, updating the local NAV state of the corresponding channel to be busy, and obtaining a current NAV busy state table of each local virtual channel. According to the invention, efficient shared spectrum management which is oriented to multiple services, supports heterogeneous access and is intelligent and collaborative is realized.

According to at least one of various embodiments of the present invention, a terminal may: receive sidelink data from another terminal through a PSSCH; and transmit HARQ feedback information about the reception of the sidelink data through a PSFCH. A plurality of symbols may be allocated for the PSFCH transmission on the basis that the PSFCH transmission is performed on a shared spectrum, and OCCs may be applied to all of the plurality of symbols allocated for the PSFCH transmission, with the exception of a first symbol.

The invention discloses a 5G base station energy efficiency optimization method and system based on dynamic spectrum sharing. The method comprises the following steps: S1, sensing user load distribution, service types and channel state information in a base station coverage area in real time; s2, dynamically allocating a shared spectrum resource pool composed of an authorized frequency band and an unauthorized frequency band according to the user load distribution and the service type; and S3, generating a spectrum allocation proportion and transmitting power joint optimization instruction based on a reinforcement learning algorithm. By dynamically fusing authorized and unauthorized spectrum resources and combining real-time service load awareness and reinforcement learning decision mechanisms, joint improvement of spectrum efficiency and energy consumption efficiency is realized on the premise of ensuring service quality. The prediction model embedded in the method can pre-judge network flow fluctuation in advance, symbol-level fine-grained energy-saving control is matched, the conflict between communication performance and equipment power consumption is effectively balanced, and the method is particularly suitable for heterogeneous network scenes with uneven user distribution and complex service types.

The invention provides a spectrum sharing method and device and a medium, and relates to the technical field of communication. The method comprises the following steps: allocating, regulating and controlling a cross-operator sharable spectrum according to a dynamic prediction strategy and an interference suppression strategy; generating a spectrum sharing smart contract and uploading the spectrum sharing smart contract to the block chain, wherein the spectrum sharing smart contract comprises a sharable time period, a sharable area, an adaptive service type, a frequency band and a sharing price mechanism of each sharable spectrum; and the blockchain receives the spectrum sharing request and matches the sharable spectrum for the spectrum sharing request according to the spectrum sharing smart contract. Through a dynamic prediction strategy and an interference suppression strategy, cross-operator sharable frequency spectrums are allocated, regulated and controlled, supply and demand matching and charging of frequency spectrum sharing are realized through a block chain smart contract, a dynamic adjustment allocation scheme is adopted, idle frequency spectrums of multiple operators are cooperatively integrated, optimal allocation of frequency spectrum resources is realized, and interference is dynamically suppressed. And a block chain smart contract is introduced, so that the spectrum sharing scene adaptation capability is improved.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Apparatuses and methods related to a reuse-based coexistence in shared spectrum in a wireless communication system. A method for a user equipment (UE) includes receiving a physical broadcast channel (PBCH) associated with a first radio access technology (RAT) and a second RAT; identifying whether the UE is associated with the first RAT and the second RAT; in case that the UE is associated with a first RAT, determining first information based on a master information block (MIB) on the PBCH and receiving a first system information block (SIB) based on the first information; and in case that the UE is associated with a second RAT, determining second information based on the MIB on the PBCH and receiving a second SIB based on the second information.

According to some embodiments, a method is performed by a wireless device for operation with shared spectrum channel access, wherein a first plurality of fixed frame periods (FFPs) are associated with the wireless device and a second plurality of fixed frame periods (FFPs) are associated with a network node and wherein each FFP comprises an idle period with no transmission and a channel occupancy time (COT) for potential transmission. The method comprises initiating a COT in one of the FFPs of the first plurality of FFPs and upon successful initiation of the COT, transmitting uplink data from the beginning of the COT.

Proposed are a method for a first device to perform wireless communication and a device for supporting same. For example, the first device may acquire information related to a channel within a shared spectrum. For example, the first device may access a first channel within the shared spectrum within a first duration based on a CAPC. For example, the first device may determine the first channel to be idle on the basis that the power detected within the first duration is smaller than a threshold value. For example, the first device may perform transmission on the first channel on the basis of successfully accessing the channel. For example, the CAPC may be set in advance in order to allow the first device to access a channel within the shared spectrum while out-of-coverage.

According to at least one of various embodiments of the present disclosure, a UE may receive, through upper layer signaling, configuration information about uplink (UL) transmission configured on shared spectrum and perform a channel connection procedure for the configured UL transmission, and in the channel connection procedure, the UE may determine whether to perform or drop the configured UL transmission on the basis that the configured UL transmission occurs after the start of a first period configured in order to support a UE-initiated channel occupancy, and the configured UL transmission overlaps an idle period included in / corresponding to the first period.

Provided are a power control method and terminal devices. The method comprises: a terminal device determining transmit power of a first sidelink signal in shared spectrum based onfollowing information: first transmit power, determined based on a power limit; second transmit power, determined based on a maximum transmit power of the terminal device; and fourth transmit power, determined based on a downlink path loss or the second transmit power.

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for measurement and initial access for sharing spectrum between mobile network operators.

Apparatuses, methods, and systems are disclosed for increasing the transmission reliability for transmissions of a duplication bearer in a shared or unlicensed spectrum. A UE apparatus for a mobile network (“NW”) includes a transceiver that initiates a listen before talk procedure (“LBT”) on shared spectrum, for transmission of a medium access control (“MAC”) protocol data unit (“PDU”) containing an original packet data convergence protocol (“PDCP”) PDU of a data radio bearer (“DRB”) configured for PDCP duplication, wherein PDCP duplication is deactivated for the DRB. The apparatus includes a processor that determines whether the LBT failed or succeeded and selectively enables PDCP duplication for the DRB in response to determining that the PDCP PDU was not transmitted due to failure of the LBT.

Methods, systems, and devices for wireless communications are described, in which devices may operate in a frame based equipment (FBE) mode for sidelink communications. One or more fixed frame period (FFP) configurations may be used by different sidelink devices, and a first device (e.g., a first user equipment UE)) may transmit to one or more other devices an indication of a FFP configuration for sidelink communications. The FFP configuration may include an idle period configuration that is coordinated across multiple devices for initiation of a channel access procedure. Alternatively different sidelink devices may have different FFP configurations, and a joint pattern may be provided for performing the channel access procedure at each of the sidelink devices.

Apparatuses and methods related to a reuse-based coexistence in shared spectrum in a wireless communication system. A method for a user equipment (UE) includes receiving a downlink synchronization (DL-sync) that includes synchronization signals and a physical broadcast channel (PBCH) that provides a master information block (MIB). The method further includes determining first information based on the MIB when the UE is associated with a first radio access technology (RAT), or second information based on the MIB when the UE is associated with a second RAT. The method further includes receiving a first system information block (SIB) based on the first information when the UE is associated with the first RAT or a second SIB based on the second information when the UE is associated with the second RAT.

Methods and apparatuses for operation modes on unlicensed spectrum in a wireless communication system including a carrier operating with shared spectrum channel access. A method of operating a UE includes receiving a set of higher layer parameters from a BS over the carrier and determining, from the set of higher layer parameters, a first operation mode for the BS. The method further includes determining, from the set of higher layer parameters, a second operation mode for the UE and transmitting to the BS based on the second operation mode. The first operation mode and the second operation mode include information on whether channel sensing is required before transmission on the carrier operating with shared spectrum channel access.

A channel assessment method includes: performing channel assessment in a shared spectrum, and alternatively, determining a channel resource occupied in the shared spectrum according to an interference condition between communication systems.

The invention relates to the field of network communication, in particular to a sensing information acquisition method and device, computer equipment and a storage medium, which can freely set and control the transmitting power and the peak-to-average power ratio under the condition of ensuring the performance of radar and communication, obtain a communication sensing integrated signal and improve the communication sensing efficiency. According to the invention, efficient sharing of frequency spectrum sub-band resources and transmitting power is realized, the utilization rate of the frequency spectrum resources is maximized, the negative influence of radio frequency circuit transmitting signal distortion caused by the fact that echo signal noise power may be greater than echo power is reduced as much as possible, and the requirement of information perception in a longer distance is met.

The invention provides a joint channel selection and power control method for a cognitive radio network, researches a scene of a plurality of primary users and a plurality of secondary shared spectrums in an underlay mode of the cognitive radio network, and provides a joint channel selection and power control MA-JCSPC method based on multi-agent deep reinforcement learning. According to the method, a spectrum access problem of primary and secondary users is modeled as a Markov decision process executed by multiple agents, and deep reinforcement learning is used for solving. In order to solve the problems of sparse rewards and invalid action exploration in the multi-agent training process, a penalty term is introduced to design a nonlinear reward function, and a new initial action selection strategy is used in the initial stage of agent action selection. The method can effectively coordinate all the secondary users to reasonably utilize the frequency spectrum, and is excellent in the aspect of the total throughput of the secondary users.

The invention provides a wireless communication method and terminal equipment. The method comprises: a terminal device determines to transmit first sideline data on a shared spectrum based on a first channel access mode and / or a second channel access mode, the first channel access mode being different from the second channel access mode, and the first sideline data being transmitted on the shared spectrum; the first channel access mode and the second channel access mode are channel access modes for monitoring the shared spectrum before the first sideline data is sent on the shared spectrum, and the possibility that the terminal equipment transmits the sideline data on the shared spectrum is improved.

Systems and methods for a sidelink (SL) hybrid automatic repeat request (HARQ) feedback scheme are described. A wireless transmit / receive unit (WTRU) may receive information indicating a plurality of SL transmission configuration indications (TCIs) and information indicating a plurality of hybrid automatic repeat request (HARQ) configurations, wherein the SL TCIs include at least an SL primary TCI (P-TCI) and an SL secondary TCI (S-TCI). The WTRU may determine a channel uncertainty and determine a combination of the set of SL TCIs and a HARQ configuration for communication via a sidelink feedback channel based on a comparison of the channel uncertainty to at least one threshold. The WTRU may transmit a transmission via a sidelink feedback channel using the determined set of SL TCIs and using the determined HARQ configuration.

A 3rd Generation Partnership Project (3GPP) user equipment (UE) includes a wireless transceiver and a processor. The processor is configured to receive, via the wireless transceiver, a measurement configuration including a measurement object and a reporting configuration. The measurement object identifies at least one shared spectrum resource. The processor is also configured to monitor the at least one shared spectrum resource, via the wireless transceiver, for use by non-3GPP radio technology devices; and transmit, in accord with the reporting configuration and via the wireless transceiver, a report on the use of the at least one shared spectrum resource by non-3GPP radio technology devices.

The present invention discloses a method for suppressing the space-time ripple effect of a sky-ground integrated network, comprising the following steps: S1. Given a communication satellite, M A drone, N The paper proposes an integrated sky-ground network with 30 ground base stations: S2. Access points at each layer communicate using a shared spectrum and a unified frame structure, partitioning the spectrum and assigning constraints to channel allocation. S3. The spatiotemporal ripple effect is modeled by combining spatial and temporal interference to characterize and suppress the spatiotemporal ripple effect. This paper analyzes the spatiotemporal interference in the integrated sky-ground network, models it, and defines it as a ripple effect, characterizing the interference relationships and suppression conditions between different access points.