87 results about "Orthogonal sequence" patented technology

Disclosed are an auxiliary pilot adaptive optimization method, apparatus and device, and a medium, which relate to the technical field of wireless communications, and solve the problems of static configuration, resource waste and single function of the existing auxiliary pilot. An auxiliary pilot frequency sequence is designed into a synchronous prefix and an estimation core section, and the synchronous prefix adopts a pseudo-random sequence with high autocorrelation and is used for timing synchronization (positioning through a sequence autocorrelation peak value) and frequency synchronization (calculating frequency offset through a phase difference) in a demodulation process; the estimation core section adopts an orthogonal sequence with a low peak-to-average ratio and is used for accurate channel estimation; the double-segment sequence is connected through a preset code pattern, and it is ensured that a demodulation end can perform synchronous analysis. By sensing the channel state in real time, parameters of the auxiliary pilot frequency are dynamically adjusted, and a synchronization function is fused, so that the demodulation performance and the resource utilization rate are improved.

The embodiment of the invention provides a multi-user TA joint estimation and channel compensation method, and the method comprises the steps: carrying out the least square estimation through employing a frequency domain signal of a demodulation reference signal of a receiving end and a local demodulation reference signal sequence, and obtaining a channel estimation result of the demodulation reference signal; based on the orthogonal sequence of the demodulation reference signals between the users, grouping the demodulation reference signal sequences to obtain grouped demodulation reference signals; performing frequency domain time error advance estimation on the grouped demodulation reference signals to obtain estimated values of time error advance of different users; a joint compensation sequence is generated based on an estimated value of a time error advance, a channel estimation result is compensated, joint estimation and channel compensation are performed on multi-user TA in a frequency domain by combining spatial domain user grouping, and TA error joint suppression between users is realized while complexity is reduced, so that the system throughput is improved.

When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement / negative acknowledgement (ACK / NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.

The embodiment of the invention provides a communication method and a related device, and the method comprises the steps: receiving first information which comprises a bias value; second information is sent, the second information is subjected to inter-symbol OCC expansion of an orthogonal sequence, and the orthogonal sequence starts to be used from the OCC element corresponding to the offset value. By adopting the embodiment of the invention, when different terminal devices are configured with the same PRB, the OFDM symbols at the same position of each terminal device realize inter-symbol OCC expansion through the OCC elements with the same serial number, and each OFDM symbol of each terminal device realizes inter-symbol OCC expansion through the same OCC element, so that the success rate of receiving information at a network side is improved.

A method and apparatus for UCI multiplexing in a wireless communication node are disclosed. The communication node receives a first signaling, a first PUCCH is a PUCCH for a first UCI, the first PUCCH depends on the first signaling; the communication node transmits a plurality of PUSCHs, the plurality of PUSCHs overlap with the first PUCCH; wherein the first UCI is multiplexed on one PUSCH of the plurality of PUSCHs, the PUSCH of the plurality of PUSCHs for multiplexing the first UCI depends on whether a first type of orthogonal sequence is applied to the plurality of PUSCHs, the first type of orthogonal sequence is an orthogonal sequence of a PUSCH.

A method and apparatus for satellite communication in a non-terrestrial network are provided. The method comprises: a first terminal device receiving first information sent by a network device, the first information being used for determining a first sequence; the first terminal device determines an uplink transmission resource in a first resource block according to the first sequence; wherein the first sequence is a sequence corresponding to the first terminal device in a first sequence set, the first sequence set comprises a plurality of mutually orthogonal sequences, the first terminal device is one of a plurality of terminal devices, and the plurality of terminal devices multiplex the first resource block based on the plurality of sequences.

Embodiments of the present application provide a communication method and a related apparatus. The method comprises: receiving first information, the first information comprising a bias value; and sending second information, the second information being spread via an inter-symbol OCC of an orthogonal sequence, and the orthogonal sequence being used starting from an OCC element corresponding to the bias value. By using the embodiments of the present application, when different terminal devices are configured with the same PRB, OFDM symbols at the same positions of each terminal device achieve inter-symbol OCC spreading by means of OCC elements of the same index. Each OFDM symbol of each terminal device achieves inter-symbol OCC spreading by means of the same OCC elements, thereby increasing the success rate of information reception at the network side.

Aspects of the present disclosure include methods, apparatuses, and computer readable media for transmitting, to at least one reader, an orthogonal sequence in response to receiving a command indicating the group of ambient IoT devices to respond, receiving, from the at least one reader, an indication indicating a reception of the orthogonal sequence by the at least one reader, and transmitting, to the at least one reader, at least a portion of the device identifier in response to receiving the indication.

The invention discloses a high-speed modulation and demodulation method for a dynamic underwater acoustic network, and the method also employs an orthogonal sequence multiplexing modulation and demodulation technology based on a Zadoff-Chu (ZC) sequence, and combines the setting of a cyclic displacement interval to construct a plurality of sub-channels, thereby achieving the multi-path separation, and reducing the average transmitting power of a system at the same time. In the aspect of multi-user access, interference among multiple users is regarded as additive white noise by using quasi-orthogonal characteristics among different ZC root sequences, so that uncoordinated random concurrent access is supported; differential modulation between sub-channels in a symbol is adopted, and the requirement for phase tracking is lowered; and a receiving end converts multipath amplitude information into soft decision information through cyclic correlation spectrum calculation and multipath diversity technologies, so that the calculation complexity is reduced, and the throughput of the time-varying underwater acoustic system is improved while the multi-user access efficiency is improved.

The present disclosure relates to methods and devices (including apparatuses, such as UEs and / or base stations) for wireless communication. The apparatus can select one or more rows or one or more columns of a DFT matrix, the one or more rows being even rows in the DFT matrix and the one or more columns being even columns in the DFT matrix. The apparatus can also determine an orthogonal matrix based on the one or more rows or the one or more columns of the DFT matrix, the orthogonal matrix having a size of (MxN)x(MxN) with MxN rows and MxN columns. Additionally, the apparatus can determine a codebook based on the orthogonal matrix, the codebook including a plurality of codepoints. The apparatus can also transmit at least one signal including a first codepoint of the plurality of codepoints in the codebook in an uplink resource.

A communication method and a related apparatus. In the method, a first communication apparatus may send, by means of some or all resources in a first PRACH resource set, a first signal used for random access (i.e., the first signal may be referred to as a random access signal). The first signal repeatedly transmitted N times is obtained by processing a preamble sequence on the basis of a first orthogonal sequence among M orthogonal sequences, and M is greater than 1. In this way, repeatedly transmitted random access signals sent by different first communication apparatuses can be obtained by processing on the basis of M different orthogonal sequences. Accordingly, after receiving the different random access signals, a receiver of the random access signals can distinguish between the different random access signals on the basis of the M orthogonal sequences. Therefore, by means of orthogonal sequence-based processing of random access signals, different communication apparatuses can reuse the same PRACH resource to achieve random access, so that multi-user multiplexing is supported, thereby increasing access capacity.

The application provides a method and device for information transmission, the method comprising: a terminal device sending a sequence belonging to a first sequence set to a network device, the sequences in the first sequence set being related to each other; and the network device performing sequence detection on a received signal according to the first sequence set to obtain at least one sequence sent by at least one terminal device. Meanwhile, the application also provides a sequence generation method for sequence modulation and an example of a first sequence set comprising sequences of different lengths, so that more sequences can be provided under the condition of a certain length, thereby supporting more users. The method and device of the application can realize access and information transmission of a large number of users under the premise of ensuring detection effect by simultaneously performing user detection and sequence detection by using non-orthogonal sequences with less correlation in the field of signal processing.

Provided are a method and an apparatus for satellite communication in a non-terrestrial network. One example method includes: receiving, by a first terminal device, first information from a network device in a non-terrestrial network; determining, by the first terminal device, a first sequence based on the first information; and determining, by the first terminal device, an uplink transmission resource on a first resource block based on the first sequence; wherein the first sequence is a sequence corresponding to the first terminal device in a first sequence set, the first sequence set comprises a plurality of mutually orthogonal sequences, the first terminal device is one of a plurality of terminal devices, and the plurality of terminal devices multiplex the first resource block with a plurality of slots based on the plurality of sequences.

The embodiment of the invention provides a communication method and a related device, and the method comprises the steps: receiving first information which is used for determining the priorities of at least two orthogonal cover code (OCC) modes; receiving second information, wherein the second information is used for determining at least one orthogonal sequence length; and sending first data, wherein the first data is expanded through at least one OCC mode. By adopting the embodiment of the invention, the OCC mode for data expansion can be determined based on the priority, and if at least two OCC modes are combined for data expansion, the number of reusable terminal equipment and the overall capacity of a communication system can be improved.

The application discloses a method and apparatus related to UCI multiplexing for use in a wireless communication node. A communication node receives a target signaling on which a first PUCCH depends, the first PUCCH being a PUCCH for a first UCI; the communication node executes transmission in a first PUSCH resource pool group, and the first UCI is multiplexed into the first PUSCH resource pool group; wherein the first PUCCH is overlapped with one PUSCH resource pool in the first PUSCH resource pool group, the first PUSCH resource pool group depends on target configuration, and the target configuration is configuration of a PUSCH orthogonal sequence; the first UCI is whether the first UCI is multiplexed into each PUSCH resource pool in the first PUSCH resource pool group or whether a first symbol depending on the first resource pool in only a part of the PUSCH resource pools satisfies a first condition set, and the first condition set comprises a timeline condition related to a PDCCH (Physical Downlink Control Channel) providing the target signaling; the first resource pool depends on at least part of the first PUSCH resource pool group and the first PUCCH.

Methods and apparatus related to a PUSCH orthogonal sequence for use in a wireless communication node are disclosed. A communication node receives a first information block, the first information block indicating N, the N being a positive integer greater than 1; the communication node sends a first signal, the time domain resource allocation of the first signal depends on the N; wherein whether the PUSCH orthogonal sequence is applied to the first signal is related to both the N and a first orthogonal sequence length, and the first orthogonal sequence length is the length of the PUSCH orthogonal sequence.

Provided are a method and device for satellite communication in a non-terrestrial network. The method comprises: a first terminal device receiving first information transmitted by a network device, the first information being used to determine a first sequence; and the first terminal device determining resources for uplink transmission in a first resource block according to the first sequence; wherein the first sequence is a sequence corresponding to the first terminal device in a first sequence set, the first sequence set comprises a plurality of mutually orthogonal sequences, the first terminal device is one of a plurality of terminal devices, and the plurality of terminal devices multiplex the first resource block based on the plurality of sequences.

A communication method and a related device. In the method, after receiving first information indicating at least one first resource, a first communication apparatus can send, on the basis of the first resource, first uplink data that is actually repeatedly transmitted N times, and the first uplink data of part or all of the N times of actual repeated transmissions is obtained by means of a first orthogonal sequence. In this way, repeatedly transmitted uplink data sent by different first communication apparatuses can be obtained by means of performing processing on the basis of different orthogonal sequences; correspondingly, after receiving different uplink data, a second communication apparatus can differentiate the uplink data sent by the different first communication apparatuses on the basis of the different orthogonal sequences. Therefore, the method for processing uplink data by means of orthogonal sequences makes it possible for different first communication apparatuses to reuse the same resources to realize data transmission, so as to support multi-user multiplexing, and thus the capacity of a system can be improved.

A first communication device configured to transmit data to a second communication device, comprising circuitry configured to: generate a second number of mutually orthogonal sequences; generate a third number of one or more spatial streams, each spatial stream carrying payload data; divide each of a first number of training symbols into a fourth number of sets of tones, each training symbol spanning a plurality of tones; divide each orthogonal sequence into a fourth number of portions; generate a training field by mapping elements of a corresponding portion of an orthogonal sequence onto a set of tones of a training symbol; and arrange the training field before and / or between the payload data of the spatial streams to enable channel estimation by the second communication device.

Methods and apparatus related to transmit power control in a wireless communication node are disclosed. A communication node receives a first signaling, the first signaling providing a first TPC command; a communication node sends a first signal in a first PUSCH resource pool, the first PUSCH resource pool depends on a first configuration, and the first configuration is a configuration of an orthogonal sequence of a PUSCH; wherein whether the application of the first TPC command is deferred depends on the time domain relationship between the first symbol of the first PUSCH resource pool and the last symbol of the PDCCH receiving the first signaling.

To provide a method for avoiding inference with PUCCH transmission of a normal device even if a normal terminal device and a reduced capacity terminal device share a physical uplink control channel (PUCCH) resource.SOLUTION: A terminal device determines a first transmission scheme from a plurality of transmission schemes including a first non-frequency hopping transmission scheme, and transmits a PUCCH by the first transmission scheme for transmitting a PUCCH without frequency hopping within a time unit. Uplink control information (UCI) on the PUCCH includes a first part to be transmitted by using an orthogonal sequence being L1 of length, and a second part to be transmitted by using an orthogonal sequence being L2 of length, divides the UCI into two parts, and transmits the two parts without frequency hopping by using an orthogonal sequence having the same length or different length.SELECTED DRAWING: Figure 12

Disclosed in the present application are a PUSCH-related method and apparatus in a node used for wireless communication. The node comprises: a first receiver, which receives a first PDCCH, wherein the first PDCCH ends at a first symbol and schedules a first PUSCH; and a first transmitter, which sends the first PUSCH, wherein whether the first PUSCH can overlap with a target transmission occasion in a time domain is related to whether the end of the first symbol is at least N symbols earlier than the start of a second symbol, the target transmission occasion is a transmission occasion for the PUSCH with a configured grant, N depends on an SCS configuration, the second symbol depends on a first configuration, and the first configuration is a configuration of an orthogonal sequence of the PUSCH.

Disclosed in the present application are a method used for a node for wireless communication and related to uplink grant, and an apparatus. A first node for wireless communication is characterized by comprising a first receiver, which receives a first signaling, wherein a configured uplink grant depends on the first signaling, the configured uplink grant comprises a first uplink grant, and whether the first uplink grant is to be transmitted to a corresponding HARQ process depends on whether a first resource pool overlaps a PUSCH resource of a first type, the first resource pool depending on a configuration of a PUSCH orthogonal sequence, and the PUSCH resource of the first type corresponding to a dynamic grant or an uplink grant received in an RAR.

Embodiments of the present application provide a communication method and a related apparatus. The method comprises: receiving first information, the first information comprising a bias value; and sending second information, the second information being spread via an inter-symbol OCC of an orthogonal sequence, and the orthogonal sequence being used starting from an OCC element corresponding to the bias value. By using the embodiments of the present application, when different terminal devices are configured with the same PRB, OFDM symbols at the same positions of each terminal device achieve inter-symbol OCC spreading by means of OCC elements of the same index. Each OFDM symbol of each terminal device achieves inter-symbol OCC spreading by means of the same OCC elements, thereby increasing the success rate of information reception at the network side.

Systems and methods are provided for identifying and locating a plurality of reflector markers implanted within a target tissue region within a patient's body. A probe is provided that is activated to transmit electromagnetic signals into the patient's body, receive reflected signals from the patient's body, and in synchronization with transmitting the electromagnetic signals, deliver light pulses into the patient's body. The markers reflector tags modulate reflected signals from the respective markers based on orthogonal code sequences opening and closing respective switches of the markers to modulate the reflective properties of the markers. The probe processes the return signals to separate the reflected signals based at least in part on the code sequences to identify and locate each of the plurality of reflector tags substantially simultaneously.

The embodiment of the invention provides a communication method and device, and the method comprises the steps: receiving first information which is used for indicating the transmission block size edt-TBS of at least one candidate early data transmission; receiving second information, wherein the second information is used for indicating a first repetition frequency; a target edt-TBS is determined from the candidate edt-TBS, and the target edt-TBS is selected from the candidate edt-TBS; determining a target repetition frequency according to the target edt-TBS and / or the first repetition frequency; and sending first data according to the target edt-TBS, the first data being expanded by an orthogonal sequence corresponding to the target repetition times. By adopting the embodiment of the invention, multi-user multiplexing is realized in the random access process of the EDT, and the system capacity can be improved.

The embodiment of the invention provides a communication method and device, which can be applied to the field of satellite communication, such as NTN. The method comprises: receiving first information, the first information being used for indicating one or more first time units of a first PUCCH, the one or more first time units overlapping with time domain resources of one or more first PUSCHs; determining N second time units according to the positions of the one or more first time units; and sending second information on each second time unit in the N second time units through a second PUSCH or a second PUCCH. By adopting the embodiment of the invention, the second information is sent by multiplexing the PUCCH or the PUSCH under the condition that the time domain resources of the PUCCH and the PUSCH are overlapped, and the second information is multiplied by the OCC element at the corresponding position in the orthogonal sequence, so that the orthogonality of information transmission can be kept, and the system capacity is improved.

The invention discloses a wireless communication method, device and equipment, and belongs to the technical field of communication, and the wireless communication method comprises the steps that a terminal sends a first SRS to network side equipment; wherein the first SRS is obtained by multiplying at least two SRS symbol groups by corresponding orthogonal sequences respectively; wherein the orthogonal sequences corresponding to part or all of the SRS symbol groups in the at least two SRS symbol groups are hopped in one orthogonal sequence group, or the orthogonal sequences corresponding to part or all of the SRS symbol groups in the at least two SRS symbol groups are hopped in different orthogonal sequence groups. In the embodiment of the invention, the random transmission of the SRS is realized by designing the orthogonal sequence multiplied by part or all of the SRS symbol groups in the at least two SRS symbol groups for hopping, so that the SRS receiving performance of a network side is improved, and the interference of an unknown terminal on the SRS receiving of the network side is inhibited.

The present application belongs to the technical field of communications. Disclosed are wireless communication methods and apparatuses, and a device. A wireless communication method in the embodiments of the present application comprises: a terminal sending a first SRS to a network-side device, the first SRS being obtained by means of respectively multiplying at least two SRS symbol groups by corresponding orthogonal sequences, wherein orthogonal sequences corresponding to some or all of the at least two SRS symbol groups hop within one orthogonal sequence group, or orthogonal sequences corresponding to some or all of the at least two SRS symbol groups hop across different orthogonal sequence groups.

Disclosed in the present application are a PUSCH-related method and apparatus used in a node for wireless communications. The apparatus comprises: a first receiver, which receives first DCI, wherein the first DCI indicates first allocation information, and the time-domain resource allocation of a first PUSCH depends on the first allocation information; and a first transmitter, which transmits the first PUSCH, wherein the transmission of the first PUSCH depends on a first configuration, and the first configuration is a configuration of an orthogonal sequence of a PUSCH. A target configured grant is provided to a first node, and whether a PUSCH is transmitted in a PUSCH transmission occasion of the target configured grant depends on whether the PUSCH transmission occasion overlaps a first time window, wherein the first time window depends on the first allocation information and the first configuration, the first time window spans a first slot group, and the first slot group comprises a plurality of slots.