Methods, systems, and apparatus for transmitting low peak-to-average power ratio (PAPR) multiplexed signals

Abstract

The invention relates to a method for transmitting a low peak to average power ratio (PAPR) multiplexed signal, and particularly relates to a method for transmitting a low peak to average power ratio (PAPR) multiplexed signal. Signaling related to a subsequence of a base sequence is transmitted in a wireless communication network, and a multiplexed signal is transmitted and received between a first communication device and a second communication device. The multiplexed signal multiplexes a plurality of signals based on respective ones of the subsequences. Each of the subsequences includes a unique subset of non-contiguous values from the base sequence that are equally spaced by one or more zero values and are located at different locations within each of the subsequences. The signals include components spaced equally apart and located at different locations within each of the signals such that consecutive components of the multiplexed signal include components of different ones of the signals.

Description

Technical Field

[0001] The present application relates generally to wireless communications and, more particularly, to communicating low peak to average power ratio (PAPR) multiplexed signals via transmission and / or reception. Background Art

[0002] In some wireless communication systems, low PAPR waveforms are preferred for at least some types of signals, such as demodulation reference signals (DMRS). Therefore, Zadoff-Chu (ZC) sequences are often used for DMRS generation. For example, in the fifth generation (5G) th In the new radio (NR) of 5G generation, the uplink multi-user multiple input multiple output (MU-MIMO) uses a π / 2 binary phase shift keying (BPSK) waveform, and different user DMRS use a comb-tooth-based π / 2-BPSK waveform (in the frequency domain).

[0003] The process of generating DMRS for each user includes selecting a sequence for DMRS, with each user using a π / 2-BPSK modulation sequence so that its single time domain signal has a low PAPR. The DMRS signals will be superimposed in the air but can be separated in the frequency domain at the receiver.

[0004] This DMRS design targets different users in a MU-MIMO system, so while each user device has a low PAPR DMRS individually, when the DMRSs of different user devices are superimposed together, the PAPR of the combined waveform increases. This process of superimposing DMRSs of different user devices occurs in the air after transmission, so the increased PAPR is not a problem for each individual user device. However, when two DMRSs are transmitted from the same user device, the higher PAPR due to multiplexing is a problem for the device's transmitter.

[0005] For example, in millimeter wave ("mm-Wave") communications, low PAPR waveforms are even more desirable due to low power amplifier (PA) efficiency and high power consumption. In addition, for example, when channel conditions permit, the system can support two-layer transmission for a specific user equipment, thereby being able to send two DMRS.

[0006] Conventional multiplexed signals will have high PAPR when sent from the same device, even if each signal individually has low PAPR. This problem is not limited to DMRS, but can also be a problem for other types of signals, such as signals carried by multiplexed beams. Achieving low PAPR transmission of multiplexed signals using a single communication device remains a challenge. Summary of the invention

[0007] Embodiments of the present invention relate to transmitting low PAPR multiplexed signals, and related signal multiplexing and waveform techniques. It is particularly desirable that the multiplexed signal (e.g., two-layer DMRS) has a low PAPR. For example, a low PAPR two-layer DMRS provides better channel estimation performance due to the fact that the low PAPR waveform can be sent at a higher power.

[0008] According to the embodiments disclosed herein, the multiplexed signals transmitted by a single device have a combined low PAPR. These signals are interleaved and multiplexed in the time domain. This is in contrast to traditional DMRS multiplexing in 5G NR, for example, in 5G NR, multiplexing is achieved by superposition. In some examples of the present invention, two multiplexed signals form a single carrier offset quadrature amplitude modulation (SC-OQAM) waveform in the time domain, and thus the combined PAPR of the multiplexed signals is kept at a low level.

[0009] According to one aspect of the present invention, the method comprises: a first communication device in a wireless communication network transmits signaling related to a subsequence of a base sequence; the first communication device sends a multiplexed signal multiplexing a plurality of signals based on corresponding subsequences in the subsequence to a second communication device in the wireless communication network,

[0010] Another method includes transmitting signaling to a second communication device in a wireless communication network and receiving a multiplexed signal. The signaling is related to a subsequence of a base sequence. The multiplexed signal is received from a first communication device and multiplexes a plurality of signals based on corresponding subsequences in the subsequence.

[0011] In an apparatus embodiment, the apparatus may include a processor and a non-transitory computer-readable storage medium coupled to the processor. The non-transitory computer-readable storage medium stores a program for execution by the processor.

[0012] The storage medium does not necessarily need to be or only needs to be implemented in or in conjunction with such an apparatus. For example, a computer program product may be or include a non-transitory computer-readable medium storing a program for execution by a processor.

[0013] The program stored by the computer-readable storage medium may include instructions for implementing the following operations or causing a processor to implement the following operations: executing, realizing, supporting or enabling any method disclosed herein.

[0014] For example, the program may include instructions for or for causing a processor to perform the following operations: a first communication device in a wireless communication network transmits signaling related to a subsequence of a base sequence; the first communication device sends a multiplexed signal that multiplexes multiple signals based on corresponding subsequences in the subsequence to a second communication device in the wireless communication network.

[0015] In another embodiment, the program may include instructions for or for causing the processor to perform the following operations: a second communication device in a wireless communication network transmits signaling related to a subsequence of a base sequence; the second communication device receives a multiplexed signal that multiplexes multiple signals based on corresponding subsequences in the subsequence from the first communication device in the wireless communication network.

[0016] In the above referenced method, apparatus, and computer program product embodiments, each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences in the subsequences. The plurality of signals comprises components equally spaced and located at different positions within each of the signals, such that continuous components of the multiplexed signal comprise components of different signals in the plurality of signals.

[0017] According to another aspect of the present invention, the system includes a first communication device and a second communication device. The first communication device is used to send a multiplexed signal including multiple signals. Each signal in the multiple signals is based on a corresponding subsequence in a plurality of subsequences of a base sequence. Each subsequence in the corresponding subsequence includes a unique subset of non-continuous values ​​from the base sequence, and the non-continuous values ​​are equally spaced by one or more zero values ​​and are located at different positions within each subsequence in the subsequence. The multiple signals include components that are equally spaced and located at different positions within each signal in the signal, so that the continuous component of the multiplexed signal includes components of different signals in the multiple signals. The second communication device is used to receive the multiplexed signal and process each signal in the multiple signals of the multiplexed signal.

[0018] The invention includes these and other aspects or embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For a more complete understanding of the present embodiments and advantages thereof, reference is now made by way of example to the following description taken in conjunction with the accompanying drawings.

[0020] Figure 1 It is a simplified diagram of the communication system.

[0021] Figure 2 yes Figure 1 Block diagram of an exemplary communication system in .

[0022] Figure 3 Examples of exemplary electronic devices and base stations are shown.

[0023] Figure 4 Shows units or modules in the device.

[0024] Figure 5 is a time domain diagram of an example of a multiplexed signal in which two signals are multiplexed.

[0025] Figure 6 is a block diagram of a synchronization channel based on a single beam.

[0026] Figure 7 is a block diagram of a synchronization channel based on simultaneous multi-beams.

[0027] Figure 8 is a signal flow diagram of uplink communication according to one embodiment.

[0028] Fig. 9 is a signal flow diagram of downlink communication according to one embodiment.

[0029] Fig.10 is a signal flow diagram of sidelink communications according to one embodiment.

[0030] Fig.11 is a signal flow diagram of sidelink communications according to another embodiment.

[0031] Fig.12 is a block diagram of an exemplary transmitter according to one embodiment.

[0032] Fig.13 is a block diagram of an exemplary receiver according to one embodiment. DETAILED DESCRIPTION

[0033] For purposes of explanation, specific exemplary embodiments are explained in detail with reference to the accompanying drawings.

[0034] The embodiments set forth herein represent information sufficient to practice the claimed subject matter and illustrate methods of practicing such subject matter. After reading the following description in light of the accompanying drawings, those skilled in the art will understand the concepts of the claimed subject matter and will recognize that the application of these concepts is not specifically described herein. It should be understood that these concepts and applications are within the scope of the present invention and the appended claims.

[0035] refer to Figure 1, a simplified schematic diagram of a communication system is provided as an illustrative example and not a limitation. The communication system 100 includes a radio access network 120. The radio access network 120 may be a next generation (e.g., sixth generation, "6G" or higher) radio access network, or a traditional (e.g., 5G, 4G, 3G or 2G) radio access network. In the radio access network 120, one or more communication electronic devices (electric devices, ED) 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j (generally referred to as 110) may be interconnected with each other or connected to one or more network nodes (170a, 170b, generally referred to as 170). The core network 130 may be part of the communication system and may be dependent on or independent of the radio access technology used in the communication system 100. The communication system 100 also includes a public switched telephone network (PSTN) 140, the Internet 150, and other networks 160.

[0036] Figure 2 An exemplary communication system 100 is shown. Typically, the communication system 100 enables multiple wireless or wired elements to transmit data and other content. The purpose of the communication system 100 may be to provide content such as voice, data, video and / or text by broadcast, multicast and unicast, etc. The communication system 100 may operate by sharing resources (e.g., carrier spectrum bandwidth) between its constituent elements. The communication system 100 may include a terrestrial communication system and / or a non-terrestrial communication system. The communication system 100 may provide a wide range of communication services and applications (e.g., earth monitoring, remote sensing, passive perception and positioning, navigation and tracking, autonomous delivery and mobility, etc.). The communication system 100 may provide a high degree of availability and robustness through the joint operation of a terrestrial communication system and a non-terrestrial communication system. For example, integrating a non-terrestrial communication system (or its components) into a terrestrial communication system may realize a heterogeneous network including multiple layers. Compared with traditional communication networks, heterogeneous networks may achieve better overall performance through efficient multi-link joint operation, more flexible function sharing, and faster physical layer link switching between terrestrial networks and non-terrestrial networks.

[0037] Terrestrial communication systems and non-terrestrial communication systems can be considered as subsystems of the communication system. Figure 2In the example shown, the communication system 100 includes electronic devices (EDs) 110a, 110b, 110c, 110d (generally referred to as ED 110), radio access networks (RANs) 120a, 120b, non-terrestrial communication networks 120c, core networks 130, public switched telephone networks (PSTNs) 140, the Internet 150, and other networks 160. The RANs 120a, 120b include corresponding base stations (BSs) 170a, 170b, which may generally be referred to as terrestrial transmit and receive points (T-TRPs) 170a, 170b. The non-terrestrial communication network 120c includes an access node 172, which may generally be referred to as a non-terrestrial transmit and receive point (NT-TRP) 172.

[0038] Alternatively or additionally, any ED 110 may be used to access, connect or communicate with any T-TRP 170a, 170b and NT-TRP 172, the Internet 150, the core network 130, the PSTN 140, other networks 160, or any combination thereof. In some examples, ED 110a may transmit uplink and / or downlink transmissions with T-TRP 170a via a ground air interface 190a. In some examples, ED 110a, 110b, 110c, and 110d may also communicate directly with each other via one or more sidelink air interfaces 190b. In some examples, ED 110d may transmit uplink and / or downlink transmissions with NT-TRP 172 via a non-ground air interface 190c.

[0039] The air interfaces 190a and 190b may use similar communication technologies, such as any suitable wireless access technology. For example, the communication system 100 may implement one or more channel access methods in the air interfaces 190a and 190b, such as code division multiple access (CDMA), space division multiple access (SDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA) or single-carrier FDMA (SC-FDMA). The air interfaces 190a and 190b may use other higher dimensional signal spaces, which may include a combination of orthogonal and / or non-orthogonal dimensions.

[0040] The non-terrestrial air interface 190c can enable communication between ED 110d and one or more NT-TRPs 172 via a wireless link (or simply a link). For some examples, the link is a dedicated connection for unicast transmission, a connection for broadcast transmission, or a connection between a group of EDs 110 and one or more NT-TRPs 175 for multicast transmission.

[0041] The RANs 120a and 120b communicate with the core network 130 to provide various services, such as voice, data, and other services, to the EDs 110a, 110b, 110c. The RANs 120a and 120b and / or the core network 130 may communicate directly or indirectly with one or more other RANs (not shown), which may (or may not) be directly served by the core network 130 and may (or may not) use the same radio access technology as the RANs 120a, 120b, or both. The core network 130 may also serve as a gateway access between (i) the RANs 120a and 120b, or the EDs 110a, 110b, 110c, or both and (ii) other networks, such as the PSTN 140, the Internet 150, and other networks 160. In addition, some or all of the EDs 110a, 110b, 110c may include functionality to communicate with different wireless networks over different radio links using different radio technologies and / or protocols. Instead of (or in addition to) wireless communication, the EDs 110a, 110b, 110c may also communicate with a service provider or switch (not shown) and with the Internet 150 through a wired communication channel. The PSTN 140 may include a circuit-switched telephone network for providing plain old telephone service (POTS). The Internet 150 may include a computer network and / or subnet (intranet) and include protocols such as the Internet Protocol (IP), the Transmission Control Protocol (TCP), and the User Datagram Protocol (UDP). The EDs 110a, 110b, 110c may be multi-mode devices capable of operating according to multiple wireless access technologies and may include multiple transceivers required to support these technologies.

[0042] Figure 3Another example of ED 110 and base stations 170a, 170b and / or 170c is shown. ED 110 is used to connect people, objects, machines, etc. ED 110 can be widely used in various scenarios, such as cellular communication, device-to-device (D2D), vehicle to everything (V2X), peer-to-peer (P2P), machine-to-machine (M2M), machine-type communication (MTC), Internet of Things (IOT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, drone, robot, remote sensing, passive perception, positioning, navigation and tracking, autonomous delivery and mobility, etc.

[0043] Each ED 110 represents any suitable end-user device for wireless operation, and may include (or may be referred to as): user equipment (UE), wireless transmit / receive unit (WTRU), mobile station, fixed or mobile user unit, cellular phone, station (STA), machine type communication (MTC) device, personal digital assistant (PDA), smart phone, laptop, computer, tablet, wireless sensor, consumer electronic device, smartbook, vehicle, car, truck, bus, train or IoT device, industrial equipment or devices in the above devices (such as communication modules, modems or chips), etc. The next generation ED 110 may be referred to using other terms. Base stations 170a and 170b are both T-TRPs and are referred to as T-TRP 170 hereinafter. Also as Figure 3 As shown, the NT-TRP is hereinafter referred to as NT-TRP 172. Each ED 110 connected to T-TRP 170 and / or NT-TRP 172 can be dynamically or semi-statically turned on (i.e., established, activated, or enabled), turned off (i.e., released, deactivated, or disabled), and / or configured in response to one or more of the following: connection availability and connection necessity.

[0044] ED 110 includes a transmitter 201 and a receiver 203 coupled to one or more antennas 204. Only one antenna 204 is shown. Alternatively, one, some or all of the antennas 204 can be panels. For example, transmitter 201 and receiver 203 can be integrated into a transceiver. The transceiver is used to modulate data or other content so that it can be sent by at least one antenna 204 or by a network interface controller (NIC). The transceiver can also be used to demodulate data or other content received by at least one antenna 204. Each transceiver includes any suitable structure for generating signals for wireless or wired transmission and / or for processing signals received by wireless or wired means. Each antenna 204 includes any suitable structure for sending and / or receiving wireless or wired signals.

[0045] ED 110 includes at least one memory 208. Memory 208 stores instructions and data used, generated, or collected by ED 110. For example, memory 208 may store software instructions or modules executed by one or more processing units (e.g., processor 210) to implement some or all of the functions and / or embodiments described herein. Each memory 208 includes one or more any suitable volatile and / or non-volatile storage and retrieval devices. Any suitable type of memory may be used, such as random access memory (RAM), read only memory (ROM), hard disk, optical disk, subscriber identity module (SIM) card, memory stick, secure digital (SD) memory card, processor cache, etc.

[0046] ED 110 may also include one or more input / output devices (not shown) or interfaces (e.g. Figure 1 The input / output device can interact with users or other devices in the network. Each input / output device includes any suitable structure for providing information to a user or receiving information from a user, such as a speaker, microphone, keypad, keyboard, display or touch screen, including network interface communication, for example, through operation.

[0047] ED 110 includes a processor 210 for performing operations including those related to preparing transmissions for uplink transmissions to NT-TRP 172 and / or T-TRP 170, those related to processing downlink transmissions received from NT-TRP 172 and / or T-TRP 170, and those related to processing sidelink transmissions to and from another ED 110. Processing operations related to preparing transmissions for uplink transmissions may include operations such as encoding, modulation, transmit beamforming, and generating symbols for transmission. Processing operations related to processing downlink transmissions may include operations such as receive beamforming, demodulation, and decoding received symbols. According to an embodiment, receiver 203 may receive downlink transmissions (possibly using receive beamforming), and processor 210 may extract signaling from the downlink transmissions (e.g., by detecting and / or decoding the signaling). An example of signaling may be a reference signal sent by NT-TRP 172 and / or T-TRP 170. In some embodiments, the processor 210 implements transmit beamforming and / or receive beamforming according to an indication of a beam direction (e.g., beam angle information (BAI)) received from the T-TRP 170. In some embodiments, the processor 210 may perform operations related to network access (e.g., initial access) and / or downlink synchronization, such as operations related to detecting a synchronization sequence, decoding, and obtaining system information. In some embodiments, the processor 210 may perform channel estimation using a reference signal received from the NT-TRP 172 and / or from the T-TRP 170.

[0048] Although not shown, the processor 210 may form a part of the transmitter 201 and / or a part of the receiver 203. Although not shown, the memory 208 may form a part of the processor 210.

[0049] The processor 210, the processing components of the transmitter 201, and the processing components of the receiver 203 may each be implemented by the same or different one or more processors, which are used to execute instructions stored in a memory (e.g., memory 208). Alternatively, some or all of the processor 210, the processing components of the transmitter 201, and the processing components of the receiver 203 may each be implemented using dedicated circuits, such as a programmed field-programmable gate array (FPGA), a graphical processing unit (GPU), or an application-specific integrated circuit (ASIC).

[0050] The T-TRP 170 may be known by other names in some implementations, such as a base station, a base transceiver station (BTS), a wireless base station, a network node, a network device, a network-side device, a transmitting / receiving node, a Node B, an evolved NodeB (eNodeB or eNB), a home eNodeB, a next generation NodeB (gNB), a transmission point (TP), a site controller, an access point (AP) or a wireless router, a relay station, a remote radio head, a ground node, a ground network device, a ground base station, a base band unit (BBU), a remote radio unit (RRU), an active antenna unit (AAU), a remote radio head (RRH), a central unit (CU), a distributed unit (DU), a positioning node, etc. The T-TRP 170 may be a macro BS, a micro BS, a relay node, a host node, etc., or a combination thereof. T-TRP 170 may refer to the above-mentioned device or refer to a means in the above-mentioned device (eg, a communication module, a modem, or a chip).

[0051] In some embodiments, portions of the T-TRP 170 may be distributed. For example, some modules of the T-TRP 170 may be located away from the device housing the antenna 256 for the T-TRP 170 and may be coupled to the device housing the antenna 256 via a communication link (not shown) sometimes referred to as a fronthaul (e.g., a common public radio interface (CPRI)). Therefore, in some embodiments, the term T-TRP 170 may also refer to a module on the network side that performs processing operations such as determining the location of the ED 110, resource allocation (scheduling), message generation, and encoding / decoding, and is not necessarily part of the device housing the antenna 256 of the T-TRP 170. These modules may also be coupled to other T-TRPs. In some embodiments, the T-TRP 170 may actually be multiple T-TRPs that work together, for example, by using coordinated multi-point transmission, to serve the ED 110.

[0052] The T-TRP 170 includes at least one transmitter 252 and at least one receiver 254 coupled to one or more antennas 256. Only one antenna 256 is shown. Alternatively, one, some, or all of the antennas 256 may be panels. The transmitter 252 and the receiver 254 may be integrated into a transceiver. The T-TRP 170 also includes a processor 260 for performing operations, including operations related to: preparing transmissions for downlink transmissions to the ED 110; processing uplink transmissions received from the ED 110; preparing transmissions for backhaul transmissions to the NT-TRP 172; processing transmissions received from the NT-TRP 172 via the backhaul. Processing operations related to preparing transmissions for downlink or backhaul transmissions may include operations such as coding, modulation, precoding (e.g., multiple input multiple output (MIMO) precoding), transmit beamforming, and generating symbols for transmission. Processing operations associated with processing transmissions received in the uplink or received through the backhaul may include operations such as receive beamforming, demodulating received symbols, and decoding received symbols. Processor 260 may also perform operations related to network access (e.g., initial access) and / or downlink synchronization, such as generating the content of a synchronization signal block (SSB), generating system information, etc. In some embodiments, processor 260 also generates an indication of a beam direction, such as a BAI, which may be scheduled by scheduler 253 for transmission. Processor 260 performs other network-side processing operations described herein, such as determining the location of ED 110, determining where to deploy NT-TRP 172, etc. In some embodiments, processor 260 may generate signaling, for example, to configure one or more parameters of ED 110 and / or one or more parameters of NT-TRP 172. Any signaling generated by processor 260 is sent by transmitter 252. It should be noted that "signaling" used herein may be alternatively referred to as control signaling. Dynamic signaling can be transmitted in a control channel (e.g., a physical downlink control channel (PDCCH)), and static or semi-static high-layer signaling can be included in a packet transmitted in a data channel (e.g., a physical downlink shared channel (PDSCH)).

[0053] The scheduler 253 may be coupled to the processor 260. The scheduler 253 may be included within the T-TRP 170, or may operate separately from the T-TRP 170. The scheduler 253 may schedule uplink transmissions, downlink transmissions, and / or backhaul transmissions, including issuing scheduling grants and / or configuring scheduling-free (“configured grants”) resources. The T-TRP 170 also includes a memory 258 for storing information and data. The memory 258 stores instructions and data used, generated, or collected by the T-TRP 170. For example, the memory 258 may store software instructions or modules executed by the processor 260 to implement some or all of the functionality and / or embodiments described herein.

[0054] Although not shown, the processor 260 may form a part of the transmitter 252 and / or a part of the receiver 254. In addition, although not shown, the processor 260 may implement the scheduler 253. Although not shown, the memory 258 may form a part of the processor 260.

[0055] The processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may each be implemented by one of the same or different one or more processors, which are used to execute instructions stored in a memory (e.g., the memory 258). Alternatively, some or all of the processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may be implemented using a dedicated circuit such as an FPGA, a GPU, or an ASIC.

[0056] It should be noted that the NT-TRP 172 is shown as a drone only as an example, and the NT-TRP 172 can be implemented in any suitable non-ground form. In addition, the NT-TRP 172 may use other names in some implementations, such as non-ground nodes, non-ground network devices, or non-ground base stations. The NT-TRP 172 includes a transmitter 272 and a receiver 274 coupled to one or more antennas 280. Only one antenna 280 is shown. Alternatively, one, part, or all of the antennas may be panels. The transmitter 272 and the receiver 274 may be integrated into a transceiver. The NT-TRP 172 also includes a processor 276 for performing operations, including operations related to the following operations: preparing transmissions for downlink transmissions to the ED 110; processing uplink transmissions received from the ED 110; preparing transmissions for backhaul transmissions to the T-TRP 170; processing transmissions received from the T-TRP 170 via the backhaul. Processing operations associated with preparing transmissions for downlink transmission or backhaul transmission may include operations such as encoding, modulation, precoding (e.g., MIMO precoding), transmit beamforming, and generating symbols for transmission. Processing operations associated with processing transmissions received in the uplink or received via the backhaul may include operations such as receive beamforming, demodulating received signals, and decoding received symbols. In some embodiments, the processor 276 implements transmit beamforming and / or receive beamforming based on beam direction information (e.g., BAI) received from the T-TRP 170. In some embodiments, the processor 276 may generate signaling, for example, to configure one or more parameters of the ED 110. In some embodiments, the NT-TRP 172 implements physical layer processing, but does not implement higher-level functions such as functions of the medium access control (MAC) or radio link control (RLC) layer. Since this is just an example, more generally, the NT-TRP 172 may implement higher-level functions in addition to physical layer processing.

[0057] The NT-TRP 172 also includes a memory 278 for storing information and data. Although not shown, the processor 276 may form a part of the transmitter 272 and / or a part of the receiver 274. Although not shown, the memory 278 may form a part of the processor 276.

[0058] Processor 276, the processing components of transmitter 272, and the processing components of receiver 274 can each be implemented by the same or different one or more processors, which are used to execute instructions stored in a memory (e.g., memory 278). Alternatively, some or all of processor 276, the processing components of transmitter 272, and the processing components of receiver 274 can be implemented using a dedicated circuit such as a programmed FPGA, GPU, or ASIC. In some embodiments, NT-TRP 172 can actually be multiple NT-TRPs that work together, for example, through coordinated multi-point transmission, to serve ED 110.

[0059] The T-TRP 170, NT-TRP 172, and / or ED 110 may include other components, but these components are omitted for clarity.

[0060] according to Figure 4 , one or more steps of the embodiment method provided herein may be performed by corresponding units or modules. Figure 4 Units or modules in a device (e.g., in ED 110, in T-TRP 170, or in NT-TRP 172) are shown. For example, a signal may be sent by a sending unit or by a sending module. A signal may be received by a receiving unit or by a receiving module. A signal may be processed by a processing unit or a processing module. Other steps may be performed by an artificial intelligence (AI) or machine learning (ML) module. The corresponding units or modules may be implemented using hardware, one or more components or devices that execute software, or a combination thereof. For example, one or more of the units or modules may be an integrated circuit, such as a programmed FPGA, GPU, or ASIC. It should be understood that if the above modules are implemented using software for execution by a processor or the like, these modules may be retrieved by the processor in whole or in part as needed, retrieved individually or collectively for processing, retrieved in one or more instances as needed, and these modules themselves may include instructions for further deployment and instantiation.

[0061] Additional details regarding ED 110, T-TRP 170, and NT-TRP 172 are known to those skilled in the art. Therefore, for the sake of clarity, these details are omitted here.

[0062] Having considered communications more generally above, we now turn to specific exemplary embodiments.

[0063] According to the embodiments disclosed herein, the multiplexed signals transmitted by a single device have a combined low PAPR. These signals are interleaved and multiplexed in the time domain. This is in contrast to traditional DMRS multiplexing in 5G NR, for example, where multiplexing is achieved by superposition.

[0064] Multiplexed signals transmitted by a single device may be referred to as multi-port (e.g. dual port in case of two signals), multi-antenna port (e.g. dual antenna port in case of two signals) or multi-beam (e.g. dual beam in case of two signals) signals associated with different ports, antenna ports or beams, respectively. A port or antenna port is a logical structure and is defined so that the channel of a symbol transmitted on an antenna port can be inferred from the channel of another symbol transmitted on the same antenna port. In other words, in some embodiments, each port may have its own UE-specific DMRS. The concept of layers may also be associated with multiplexed signals, and different signals to be multiplexed may be associated with different layers. Layers generally refer to the single-user MIMO concept of how many data layers or data streams can be transmitted simultaneously in space. For example, in closed-loop MIMO, beams are usually (but not necessarily always) associated with layers, in the sense that each layer may have its own associated beam. Ports, layers and beams may be interrelated features or concepts, as one antenna port may have its own beam direction, using its own DMRS, to send a layer of data. For example, “one layer of data” known to both the transmitter and receiver may be used as a synchronization signal or a DMRS signal.

[0065] In a sense, layers can be thought of as physical concepts or structures, while ports or beams can be thought of as logical concepts or structures. These features can also be interrelated in that there may be mappings between layers and ports or between layers and beams. For example, a signal associated with a layer may be carried by a channel or link provided or supported by a port or beam. In some embodiments, there is a one-to-one mapping between layers and ports or beams, such that any one port or beam carries a signal associated with one layer, and a signal associated with any one layer is carried by one port or beam. This is not necessarily the case in all embodiments, for example, several ports or beams may transmit signals associated with the same layer.

[0066] Regardless of whether the signals to be multiplexed are associated with different ports, beams or layers, the multiplexed signals will be transmitted through a single communication device. For example, transmitting the multiplexed signal through a communication device may include the communication device sending the multiplexed signal, and / or receiving the multiplexed signal from the communication device.

[0067] In one embodiment of a time domain interleaving method consistent with the present invention, the two multiplexed signals form a single carrier offset quadrature amplitude modulation (SC-OQAM) waveform in the time domain, and thus the combined PAPR of the multiplexed signals is kept at a low level. Although the present invention is not limited in any way to multiplexing any particular number of signals, this SC-OQAM property illustrates the benefits that can be provided in a particular embodiment and is used in this example to multiplex two signals.

[0068] The present invention is also not limited to a particular type of signal. Some embodiments are described by way of example in the context of multiplexing DMRS, but the features disclosed in this context may also be applied or alternatively applied to other types of signals. In other words, for example, DMRS may be replaced by a data stream of a different signal (including but not limited to a synchronization signal).

[0069] The signals to be multiplexed may (but need not be) all of the same type. Low PAPR may be more important for certain types of signals, and in some embodiments, signals of the same type are multiplexed, but the multiplexing of signals as disclosed herein does not depend on the signal type.

[0070] For illustration purposes only, consider an embodiment related to two DMRSs to be multiplexed, including one DMRS for each of two ports. Generating the DMRS may include generating or otherwise obtaining a sequence c0, c1, ..., c1 of length N / 2 such as a Gold sequence or a ZC sequence. N / 2-1 , where N is the number of frequency subcarriers occupied by the two ports.

[0071] Gold sequences may be particularly preferred because they have a relatively flat power spectrum, which is required for channel estimation. ZC sequences also have a flat power spectrum, but the PAPR is higher in the upsampled time signal. In general, any sequence with a relatively flat power spectrum can suffice for DMRS generation. However, when the number of ports, or more generally the number of signals to be multiplexed, is 2, a binary sequence such as the Gold sequence can be used to construct an SC-OQAM signal. SC-OQAM has the lowest PAPR of the single carrier waveforms.

[0072] The binary sequence inserted into the time domain can be used with π / 2-BPSK modulation. One purpose of using the Gold sequence with π / 2-BPSK modulation is to provide a reference signal with a lower PAPR than the reference signal based on the ZC sequence. The main difference between the reference signal (RS) generated by the Gold sequence and the RS generated by the ZC sequence is that the RS generated by the Gold sequence has a lower PAPR, but the power spectrum is not flat in the frequency domain, which makes it suitable for low-order modulation, such as π / 2-BPSK modulation.

[0073] This discussion of sequences implies the next step in generating DMRS, which is to apply π / 2-BPSK modulation to the selected sequence to generate the modulation sequence

[0074] Then from Form two sequences of length N / 2:

[0075]

[0076]

[0077] In the context of this illustrative example, two DMRS are then generated, including:

[0078] and

[0079]

[0080] In the dual-port embodiment with one DMRS per port, they are used for port 0 and port 1 respectively.

[0081] In this way, the two DMRS sequences form a "comb tooth" structure in both the time domain and the frequency domain. In addition, in this example, is a real number, The DMRS is an imaginary number and is multiplexed in the time domain to form an SC-OQAM signal, which further reduces the PAPR.

[0082] Figure 5 is a time domain diagram of an example of a multiplexed signal that multiplexes two signals, and shows the resulting waveform multiplexing a signal having a comb-tooth structure in the time domain. The comb-tooth structure used herein is intended to convey the concept that non-zero values ​​are non-continuous or discontinuous in the time domain or frequency domain. In other words, in a sequence or signal having a comb-tooth structure, any two adjacent non-zero values ​​or elements are separated by one or more zero values ​​or elements. The signals to be multiplexed have a structure that can be referred to as a complementary comb-tooth structure because the positions or locations that have been set to zero in one signal are not set to zero in at least one other signal. In Figure 5 For example, and Having a complementary comb structure, in this example, the multiplexed signal can be said to have a double comb structure. In high-order multiplexing of more than two sequences or signals, the non-zero values ​​or elements in each sequence or signal are separated by multiple values ​​or elements that have been set to zero, and at any index or position in time or frequency, only one of the sequences or signals has a value that is not set to zero.

[0083] From this example and the above discussion, it can be seen that, in one embodiment, low PAPR of two multiplexed DMRSs can be achieved by the following two considerations:

[0084] For example, the DMRS from two ports are offset from each other but interleaved with each other in the time domain;

[0085] DMRS sequences generated from the same binary sequence (eg, Gold sequence) provide a flatter frequency response, and in some embodiments, one modulation sequence includes real-valued elements in the time domain while the other modulation sequence includes imaginary-valued elements.

[0086] Although the first consideration above can be guaranteed by the comb signal structure disclosed in this article, the second consideration is not strictly guaranteed in MIMO. This is because, in MIMO, the transmitted signal is transformed by the precoder. The precoder elements of the same power amplifier (PA) can rotate the multiplexed signal at different angles, and the phase in the precoder elements can change along the i-axis. These two factors will cause the multiplexed sequence to have a deviation of continuous phase rotation of π / 2 in the timing at each PA input. However, when the continuous phase rotation is still close to π / 2 (the worst case is in phase), the PAPR of the multiplexed DMRS can still be reduced. In addition, by setting a pair of corresponding precoder elements to 0 phase, at least the corresponding PA can have a strict π / 2 phase rotation. This is because only the relative phase in the precoder is important, so applying a common phase to them will not affect system performance. For example, due to beamforming requirements, this feature can be used when the power of one PA is higher than that of other PAs.

[0087] Several embodiments disclosed herein refer to two multiplexed signals, such as a dual-port design. However, other embodiments can be extended to more than two multiplexed signals, such as for more than two ports, to provide an interleaved comb-type signal structure in the time domain and the frequency domain.

[0088] Consider again the multiplexed DMRS embodiment, as an illustrative example, one DMRS for each of the multiple ports.

[0089] The process of generating a multiplexed DMRS may include generating or otherwise acquiring a sequence c0, c1, ..., c1 having a length of L = N / M Gold sequence or a ZC sequence. L-1 , where N is the number of frequency subcarriers occupied by multiple ports and M is the number of ports.

[0090] Apply π / 2-BPSK modulation to the sequence to generate the modulation sequence

[0091] Then, from Form M sequences, each of length L:

[0092]

[0093] Where m = 0, 1, ..., M-1 is a port index (or more generally a signal index), and K = L / M. Although the formula includes one or more leading zero values ​​and one or more trailing zero values, this is only to provide a general formula for illustration purposes. It can be seen that a non-zero value appears at the first sequence position in the sequence (m = 0) and a non-zero value appears at the last sequence position in the sequence (m = M-1).

[0094] In this illustrative example, the corresponding DMRS is then generated, including:

[0095]

[0096] For ports m=0, 1, ..., M-1, in a multi-port embodiment, there is one DMRS per port.

[0097] The resulting multiplexed signal of multiplexed DMRS will have a slightly higher PAPR than in the two-port DMRS example because adjacent pulses will not have a phase relationship of ±π / 2. However, the PAPR will still be less than that of traditional discrete Fourier transform spread OFDM (DFT-s-OFDM) because adjacent pulses are not in phase.

[0098] The embodiments disclosed herein are particularly beneficial for low PAPR multiplexing DMRS, for example, in applications where multi-port DMRS is associated with the same device for uplink communication, downlink communication and / or UE-to-UE communication via a sidelink. Another application where the disclosed embodiments may also or alternatively be beneficial is a simultaneous synchronization (synch) channel for downlink communication and / or UE-to-UE communication, such as a synchronization channel based on simultaneous multiple beams.

[0099] For example, beam scanning can be used when beamforming is applied to synchronization channels to allow UEs at different locations to initially access the network. However, beam scanning can include additional overhead and access delays, especially for higher frequency beam scanning with narrow beams and larger antenna arrays. For non-coverage-limited scenarios, wide beams can be used to reduce the number of beam scans, but the spatial resolution will be reduced relative to beam scanning using narrower beams.

[0100] The synchronization channel based on simultaneous multi-beams disclosed herein can reduce beam scanning overhead and also provide narrow beam resolution. When multi-beam signals share the same PA, there will be problems with PAPR. Several of the above examples involve port indexes, and in an embodiment, the port index can actually be replaced with a beam index to implement a synchronization channel based on a beam pair or a beam group. Low PAPR multiplexing multi-beam synchronization signals can achieve wide beam coverage for beam scanning, but with more accurate spatial resolution, and no PAPR drop. Similar to the DMRS embodiment, different sequences can be formed from a base sequence in a manner that provides a comb-type signal structure in the time domain and the frequency domain. The difference from the DMRS embodiment is that different sequences are associated with different narrow beams for beam scanning to allow more accurate identification of beams during simultaneous beam scanning based on beam pairs or beam groups. References to beam groups are intended to include multiple beams, and a beam pair is an example of a beam group including two beams. A beam group may include two or more beams.

[0101] In short, according to some embodiments, multiplexed synchronization signal block (SSB) beams are used for beam scanning instead of wider beams, so that higher beam resolution can be achieved through low PAPR multiplexed beams.

[0102] Figure 6 is a block diagram of a single beam based synchronization channel. Figure 7 is a block diagram of a synchronization channel based on simultaneous multi-beams.

[0103] Figure 6 Conventional beam scanning between a network device 610 and a UE 612 is shown, where a wider beam 620 is typically used to reduce scanning time. Beams are shown at 632 that are swept in different directions at different times. However, wider beams have lower beam resolution, also referred to herein as spatial resolution. From a system performance perspective, network devices such as gNBs will want to use higher resolution beams to send data to UEs. Although a network device can potentially use multiple narrower beams to form a wider beam, thereby reducing beam scanning time while maintaining the beam resolution of the narrower beam, multiplexing multiple beams into a wider beam may result in increased PAPR.

[0104] According to the embodiments of this invention, the beams are actually multiplexed in a dual comb manner, similar to the multiplexing of DMRS, in order to maintain a low PAPR of a single wide beam. Figure 7As shown, for example, for a dual beam embodiment, SSB beam pairs 720, 722 are used for beam scanning between network device 740 and UE 712. Examples of beam scanning patterns are shown at 732, 734. Patterns such as pattern 732 can potentially reduce SSB overhead and can also or alternatively reduce beam scanning time by: performing the beam scanning on three occasions (rather than Figure 6 The exemplary pattern at 734 shows that narrower beams can also or alternatively be used to provide enhanced SSB resolution. Figure 6 Compared to the pattern shown at 632, Figure 7 The pattern at 734 in FIG. 1 realizes beam scanning at six opportunities, but unlike Figure 6 This provides higher spatial resolution than wider beam scanning.

[0105] Different sequences can be associated with different beams, such as Figure 7 As shown, these sequences can be generated in any of a variety of ways (including examples similar to the examples provided herein for DMRS multiplexing). For the simultaneous dual-beam embodiment, for example, a Gold sequence or a ZC sequence of length N / 2, such as a sequence c0, c1, ..., c N / 2-1 , where N is the number of frequency subcarriers carried by the two beams, π / 2-BPSK modulation can be applied to this sequence to generate the modulation sequence Then, you can Form two sequences of length N / 2:

[0106]

[0107]

[0108] Then generate the following Figure 7 The beam sequence shown is:

[0109] and

[0110]

[0111] They are used for beam 1 and beam 2 respectively.

[0112] Similar to the dual-port DMRS example above, the features associated with the simultaneous dual-beam synchronization channel can be extended to multi-beam embodiments including more than two beams. Generating corresponding SSB signals for different beams may include generating or otherwise obtaining a length of L=N / M b Gold sequence or ZC sequence c0,c1,…,c L-1, where N is the number of frequency subcarriers carried by the multiple beams, and M b is the number of beams. π / 2-BPSK modulation is applied to the sequence to generate the modulation sequence Then, from Formation M b sequences, each of length L:

[0113]

[0114] Where m = 0, 1, ..., M b -1 is the beam index, and K = L / M b .

[0115] In this illustrative example, the corresponding DMRS is then generated, including:

[0116]

[0117] For beam m = 0, 1, ..., M b -1, in a multi-beam embodiment, one SSB signal per beam.

[0118] The multi-port DMRS example above uses M as the number of ports, and the multi-beam SSB example above uses M b is the number of beams. The different notations between these examples are for ease of reference only. More generally, M and M b It can be considered as an example of a signal index, and the signal index can be an antenna port, antenna beam, layer or other index, depending on the feature (port, beam or layer in these examples) for which the different sequences and signals are provided.

[0119] Figure 8 is a signal flow diagram of uplink communication according to one embodiment. Figure 8 The features shown in the example include: at 804, signaling is transmitted between the first communication device and the second communication device in the form of a BS and a UE in the example shown. At 804, the transmission includes the BS sending signaling to the UE and the UE receiving signaling from the BS. The signaling is related to a subsequence of the base sequence and can take various forms.

[0120] For example, the signaling at 804 may indicate a base sequence from which a plurality of subsequences used, for example, to generate a DMRS or synchronization signal will be generated or formed. Such signaling is related to the subsequences because the subsequences will be generated or formed from the base sequence, and thus the signaling indicating the base sequence is also related to the subsequences in at least this sense.

[0121] One or more base sequences may alternatively be predefined or preconfigured and therefore need not be indicated in the signaling at 804. In these embodiments, the signaling at 804 may indicate other characteristics or parameters related to the subsequences. For example, for beam scanning embodiments, the signaling at 804 may indicate any one or more of the following: the number of ports on which signals are to be multiplexed; the allocated bandwidth, from which the sequence length can be inferred or determined; the beam index, from which the number of signals to be multiplexed can be inferred or determined.

[0122] These are illustrative and non-limiting examples of signaling associated with subsequences. Other embodiments are possible, and similar or different signaling may be used that is related in some way to the subsequences on which the signal to be multiplexed is based. Specific types of signaling are not necessarily mutually exclusive. For example, the signaling associated with a subsequence may be or include such signaling that indicates: a base sequence (e.g., a base sequence type and / or a base sequence length), and one or more other parameters associated with the subsequence, e.g., the number of ports, or another indicator of the number of subsequences.

[0123] Other optional signaling is shown at 802. The signaling at 802 indicates other configuration information and / or settings, and may be sent by the UE to the BS and received by the BS from the UE, and / or sent by the BS to the UE and received by the UE from the BS, as shown by the bidirectional arrow at 802.

[0124] At 812, Figure 8 The UE is shown to generate signals. These signals are based on subsequences of a base sequence as disclosed herein, and non-limiting examples of signals include DMRS and synchronization signals. Other types of signals are also possible, such as a sounding reference signal (SRS), for example, when there are multiple antennas that require channel sounding, these signals can benefit from low PAPR multiplexing waveforms. For example, generating a signal at 812 may include generating or otherwise acquiring a base sequence such as a Gold sequence or a ZC sequence, and such acquisition includes accessing a predefined or preconfigured base sequence available at a communication device. In some embodiments, a modulation such as π / 2-BPSK modulation is applied to the base sequence to generate a modulated base sequence. Based on the (possibly modulated) base sequence, multiple subsequences can be selected, formed or otherwise acquired, and the signals to be multiplexed are based on these subsequences. Examples of such signals include DMRS, synchronization signals, and SRS, but other types of signals are also possible.

[0125] exist Figure 8The multiplexing of the signal by the UE is shown at 814, and the multiplexed signal is sent by the UE and received by the BS at 822. The reception processing of the BS is shown at 832, and may include, for example, performing channel estimation based on the DMRS or performing synchronization operations based on the synchronization signal.

[0126] As shown at 822, the uplink transmission from the UE to the BS represents an example of how to transmit a multiplexed signal multiplexing multiple different signals in a wireless communication network. In this example, transmitting the multiplexed signal includes the UE transmitting the multiplexed signal to the BS and the BS receiving the multiplexed signal from the UE.

[0127] The manner in which the multiplexed signal is transmitted depends on the implementation. For example, transmission in the DFT-s-OFDM method includes converting the signal to be multiplexed from the time domain to the frequency domain, mapping to subcarriers, converting back to the time domain, and inserting a CP to generate a time domain multiplexed signal for transmission. Thus, transmitting the multiplexed signal may include these and / or other transmit processing operations, and similarly, receiving the multiplexed signal may include corresponding receive processing operations. Figure 8 The sending process is not shown in the figures or other figures to avoid the figures appearing too crowded.

[0128] Fig. 9 is a signal flow diagram of downlink communication according to one embodiment. Fig. 9 The example in is similar to Figure 8 , but includes at 912, the BS generating a signal, at 914, the BS multiplexing the signal, and at 922, transmitting the multiplexed signal in a downlink transmission. The receiving process is also Fig. 9 932 are shown, but Fig. 9 The UE receives the multiplexed signal from the BS and performs reception processing. Fig. 9 The signaling at 902 and 904 in Figure 8 The signaling at 802 and 804 is the same or substantially the same.

[0129] Fig.10 is a signal flow diagram of sidelink communication according to one embodiment. The embodiments disclosed herein are not limited to a particular type of communication device (e.g. Figure 8 and Fig. 9 The multiplexed signal is transmitted between the UE and the BS as shown in FIG. UE to UE communication (such as Fig.10 as an example of sidelink communication) is possible.

[0130] Optional signaling between each of the two UEs 1001, 1003 and the BS is shown at 1002, 1004. Figure 8 802 in describes this optional signaling, but in Fig.10In the example, the signaling is transmitted between each UE 1001, 1003 and the BS.

[0131] At 1012 and 1014, Fig.10 The signaling associated with the transmission of the subsequence is shown. Fig.10 In the example, signaling is sent by the BS to each UE 1001, 1003, and received by each UE from the BS.

[0132] In the example shown, UE 1001 will send multiplexed signals, and generating signals and multiplexing these signals are shown at 1022, 1024. These operations are also shown in FIG. Figure 8 shown in, and at least referenced above Figure 8 Described.

[0133] The sidelink transmission is shown at 1032, and the transmission of the multiplexed signal by UE 1001 to UE 1003 may include a transmission process (not shown). On the receiving side, the operation includes UE 1003 receiving the multiplexed signal from UE 1001, and the reception process at 1042 may include a corresponding reception operation of the transmission processing operation and operations such as channel estimation or synchronization operations.

[0134] Fig.10 Embodiments of sidelink communication in the NR sidelink include communications between UEs controlled and configured by a BS. Embodiments supporting direct communications between devices such as UEs do not necessarily include network devices. For example, the NR sidelink supports the following scenario: the UE autonomously determines resources for SL data transmission using a sidelink control channel and does not include a BS. Fig.11 is a signal flow diagram of sidelink communications according to such an embodiment.

[0135] Fig.11 The signaling at 1102 and 1104 is similar to Figure 8 The signaling shown at 802 and 804 is different in that Fig.11 The signaling in the UE is between two UEs 1101, 1103 instead of between the UE and the BS. At 1104, the signaling related to the subsequence may be or include, for example, sidelink control information (SCI) or PC5 (sidelink) radio resource control (RRC) signaling.

[0136] Signal generation and multiplexing are shown at 1112, 1114 and as disclosed elsewhere herein, e.g., with reference to Figure 8The sidelink transmission at 1122 includes UE 1101 sending a multiplexed signal to UE 1103, and UE 1103 receiving a multiplexed signal from UE 1101. Other transmission processing (not shown) may also be performed by UE 1101, and the reception processing of UE 1103 at 1132 may include reception processing corresponding to such transmission processing. The reception processing at 1132 may also or alternatively include operations such as channel estimation or synchronization operations.

[0137] Fig.11 The illustrated embodiment includes one UE (1103) sending signaling related to subsequences, and another UE (1101) generating a signal at 1112 for multiplexing at 1114 based on these subsequences. In another embodiment, the UE that will send the multiplexed signal also sends signaling related to the subsequences to the other UE. Fig.11 , such an embodiment includes UE 1101 sending signaling at 1104 and UE 1103 receiving signaling.

[0138] Figures 8 to 11 Various embodiments are shown. More generally, a method consistent with the present invention may include a first communication device in a wireless communication network transmitting signaling. The signaling is associated with a subsequence of a base sequence. Transmitting signaling may include sending signaling or receiving signaling, or from a network level perspective, simultaneously including one communication device sending signaling and another communication device receiving signaling.

[0139] A multiplexed signal may also be transmitted, the multiplexing of which is based on multiple signals of the corresponding subsequences. For example, the method may include transmitting the multiplexed signal from the first communication device referenced above to the second communication device in the wireless communication network. Another embodiment may include receiving such a multiplexed signal from the communication device. Thus, transmitting the multiplexed signal may include transmitting, receiving, or both. For example, Figures 8 to 11 An embodiment is shown in which the transmission signaling includes the following, any one or more of which may be provided or supported by different types of communication devices (e.g., UE or base station):

[0140] · The UE receives signaling from the BS or another UE, such as by way of example at 802, 804, 902, 904, 1002, 1004, 1012,

[0141] As shown at 1014, 1102, and 1104;

[0142] The BS receives signaling from the UE, as shown by way of example at 802, 902, 1002, 1004;

[0143] The UE sends signaling to the BS and / or another UE, as shown by way of example at 802, 902, 1002, 1004, 1102, 1104;

[0144] The BS sends signaling to one or more UEs, such as by way of example at 802, 804, 902, 904, 1002, 1004, 1012,

[0145] As shown at 1014.

[0146] These examples show that transmission signaling may include any of various types of first communication devices such as UE or base station or other network devices sending signaling to any of various types of second communication devices such as UE or base station or other network devices. Transmission signaling may also or alternatively include any of various types of first communication devices such as UE or base station or other network devices receiving signaling from any of various types of second communication devices such as UE or base station or other network devices.

[0147] Similar to transmission signaling, transmission multiplexing signals may include any one of various types of communication devices such as UE or base station or other network devices for transmission and / or reception. Figures 8 to 11 Shown in the figure is an uplink transmission 822, a downlink transmission 922, or a sidelink transmission 1032, 1122.

[0148] The receiver or intended receiver (or receiving device) of the multiplexed signal may send or receive signaling before receiving the multiplexed signal. Figure 8 In FIG. 8 , the BS is the intended recipient of the multiplexed signal and may send signaling at 802, 804 and then receive the multiplexed signal at 822. Fig. 9 In , the UE is the intended recipient of the multiplexed signal and may receive signaling at 902, 904 and then receive the multiplexed signal at 922. Fig.10 In , UE 1003 is the intended recipient of the multiplexed signal and can receive signaling from the BS at 1004, 1014. Fig.11 , UE 1103 is the intended recipient of the multiplexed signal and may send signaling to UE 1101 at 1104 and then receive the multiplexed signal at 1122 .

[0149] Similarly, the sender or intended sender (or sending device) of the multiplexed signal may send or receive signaling before the multiplexed signal is sent. Figure 8 In , the UE is the sender of the multiplexed signal and can receive the signaling at 804 and then send the multiplexed signal at 822. Fig. 9 In , the BS is the sender of the zero-filled transmission symbol, but can send signaling at 902, 904 and then send the multiplexed signal at 922. Fig.10In , UE 1001 is the sender of the multiplexed signal and can receive signaling at 1002 and 1012 and then send the multiplexed signal at 1032. Fig.11 , UE 1101 is the sender of the multiplexed signal and can receive signaling from UE 1103 at 1102 and 1104 and then send the multiplexed signal at 1122.

[0150] In some embodiments, signaling and multiplexing signals are transmitted between a sender and an intended receiver of the multiplexing signal, such as Figure 8 , Fig. 9 and Fig.11 Thus, in the context of transmitting a multiplexed signal between a first communication device and a second communication device, in such an embodiment, transmitting signaling may include transmitting signaling between the first communication device and the second communication device. For example, transmitting signaling may include the first communication device sending signaling to the second communication device, or the first communication device receiving signaling from the second communication device. Transmitting signaling may also or alternatively include the first communication device receiving signaling from a third communication device, such as Fig.10 As shown by way of example in FIG. 1 , signaling is transmitted between the BS and each UE 1001 , 1003 , but multiplexed signals are transmitted between the UEs.

[0151] These are examples of transmission signaling and transmission multiplexing signals.

[0152] Figures 8 to 11 The embodiments shown in are intended to be non-limiting examples. Other embodiments may include fewer, additional and / or different features.

[0153] Consider a method, the method includes a first communication device or a second communication device in a wireless communication network transmitting signaling related to a subsequence of a base sequence. From the perspective of a transmitting side, the method may include the first communication device sending a multiplexed signal multiplexing a plurality of signals based on corresponding subsequences in the subsequence to a second communication device in the wireless communication network. From the perspective of a receiving side, the method may include the second communication device receiving such a multiplexed signal from the first communication device.

[0154] Each subsequence in the subsequence includes a unique subset of non-continuous values ​​from the base sequence. These values ​​are equally spaced by one or more zero values ​​and are located at different positions or locations within each subsequence in the subsequence. These signals similarly include signal components in the time domain and the frequency domain, which are also equally spaced from each other and are located at different positions or locations in each signal in the signal. The continuous components of the multiplexed signal include components of different signals in multiple signals. This is an example of how to describe or characterize a comb signal structure, which can be a dual comb structure for two signals, or more generally a multi-comb structure for two or more signals that are multiplexed. Sequences and subsequences are referred to as having or including values ​​or elements in this article, and signals are referred to as having or including components or elements in this article. Sequence or subsequence values ​​and sequence or subsequence elements are equivalent terms. Similarly, signal components and signal elements are equivalent terms.

[0155] Another way to describe the comb structure of the signals to be multiplexed is that, for example, in a two signal multiplexing embodiment, successive components of the multiplexed signal alternate back and forth between components of the two signals being multiplexed. More generally, for more than two signals, successive components of the multiplexed signal cycle sequentially through components of one signal, then components of a different signal, and so on, signal by signal on a one component per signal basis until all components of all signals have been multiplexed in the multiplexed signal.

[0156] The comb structure can also be described in both the time domain and the frequency domain in terms of having the following properties: (1) signal components (also referred to as elements) are equally spaced or spaced apart; (2) in some embodiments, for a port or beam, each signal occupies a different set of positions or locations; (3) there are no "zero" positions or locations in the multiplexed signal that do not carry a component from one of the signals.

[0157] Alignment may be another way to express the concept of comb structure. Each signal can be considered to include separated components located at different positions such that each component is aligned with the zero or null position or location of each other signal. In other words, the signal components are separated or separated in each signal and uniquely aligned such that only one signal has a non-zero component or element at each position or location in the time and frequency domains.

[0158] More examples are provided above. As described above, the comb structure is intended to convey the concept that non-zero values ​​are discontinuous or discontinuous in the time domain or frequency domain. In other words, in a sequence or signal with a comb structure, any two adjacent non-zero values ​​or elements are separated by one or more zero values ​​or elements. The signal to be multiplexed has a structure that can be called a complementary comb structure, because the position or positioning that has been set to zero in one signal is not set to zero in at least one other signal. The non-zero values ​​or elements in each sequence or signal are separated by multiple values ​​or elements that have been set to zero, and at any index or position in time or frequency, only one of these sequences or signals has a value or element that is not set to zero.

[0159] Subsequences, like signals, also have a comb structure. The comb structure can be described in the same way for signals (based on signal components or elements) and subsequences (based on subsequence values ​​or elements). Any description of the comb signal structure in this article can be extended to subsequences.

[0160] With respect to base sequences and multiplexed signals, generating or forming subsequences from base sequences can be considered as the reverse process of multiplexing signals into multiplexed signals. When generating or forming subsequences from base sequences, the values ​​or elements of the base sequence are actually uniquely distributed or interspersed between subsequences, so that each value or element in the base sequence is only part of a subsequence, and the continuous values ​​or elements in the base sequence are distributed between multiple subsequences. In this way, each subsequence includes a subset of non-continuous values ​​from the base sequence, and each subset of subsequences is unique because for each subsequence, no other subsequence includes any identical base sequence values. In a relative or opposite sense, when multiplexing signals together into multiplexed signals, signal components are actually collected together from different signals to form a multiplexed signal.

[0161] In the context of the sender side method or the receiver side method, any of the various features disclosed herein may be provided. For example, any one or more of the following may be provided in any of various combinations:

[0162] The base sequence may be or include a binary sequence;

[0163] The base sequence may be or include a Gold sequence or a ZC sequence;

[0164] The corresponding subsequence on which the multiplexed signal is based may be a unique subset of non-continuous π / 2-BPSK modulation values ​​from a base sequence;

[0165] The length of the base sequence may be L=N / M, where N is the number of frequency subcarriers and M is the number of corresponding subsequences;

[0166] The modulation value of the base sequence may be or include the modulation sequence

[0167] The corresponding subsequence may include M corresponding subsequences: Where m=0, 1, ..., M-2 is the index, and K=L / M, when m=0, And when m=M-1,

[0168] The subsequence-based signal may include M signals

[0169] The subsequence-based signal may be or include a DMRS associated with the first communication device;

[0170] The subsequence-based signal may be or include an SRS associated with the first communication device;

[0171] The subsequence-based signal may be or include a synchronization signal associated with different respective antenna beams for a simultaneous multi-beam synchronization channel;

[0172] Transmitting signaling may include the first communication device sending signaling to the second communication device;

[0173] Transmitting signaling may include the first communication device receiving signaling from the second communication device;

[0174] Transmitting signaling may include the first communications device receiving signaling from the third communications device;

[0175] Transmitting the signaling may include the second communication device receiving the signaling from the first communication device;

[0176] Transmitting signaling may include the second communication device sending signaling to the first communication device;

[0177] Transmitting the signaling may include the second communications device receiving the signaling from the third communications device.

[0178] These method examples are illustrative and non-limiting embodiments, and other embodiments may include additional or different features disclosed herein.

[0179] The embodiments are not limited in any respect to methods.

[0180] Fig.12 is a block diagram of an exemplary transmitter 1200 according to one embodiment. It should be understood that Fig.12The components in the exemplary transmitter 1200 can realize the transmission function of a wireless device or a network device (such as a base station). The exemplary transmitter 1200 includes a base sequence generator 1202, a modulator 1204, a subsequence generator 1206, a time domain to frequency domain converter 1208, a subcarrier mapper 1210, a frequency domain to time domain converter 1212, a cyclic prefix (cyclic prefix, CP) inserter 1214, one or more power amplifiers 1216 and one or more antennas or antenna elements 1218 interconnected as shown in the figure. Other embodiments may include additional, fewer or different elements interconnected in a similar manner or in a different manner. It should also be understood that the components in the exemplary transmitter 1200 are specific and are only used to illustrate a possible embodiment. The present invention is not limited to a transmitter consistent with a specific exemplary transmitter 1200.

[0181] Fig.12 The elements shown in the can be implemented in any of a variety of ways, such as in hardware, firmware, or one or more components of executing software. The present invention is not limited to any particular type of implementation, for example, the implementation details may vary between different devices.

[0182] The operation of the exemplary transmitter 1200 will now be described by way of example. A base sequence generator 1202 is used to generate or otherwise obtain a base sequence in any of a variety of ways as disclosed elsewhere herein, such as by executing software. A modulator 1204 illustrates an embodiment in which a base sequence is modulated, and is used to modulate a base sequence, such as by executing software, thereby generating a modulated base sequence. A subsequence generator 1206 is used to generate a subsequence based on a base sequence, such as by executing software. The modulated base sequence at the input of the subsequence generator 1206 and the subsequence at the output of the subsequence generator are an illustration of an embodiment in which two subsequences are generated from a modulated base sequence, consistent with the example provided above.

[0183] The time domain to frequency domain converter 1208 is used to convert the subsequence from the time domain to the frequency domain, for example, by executing software, for example, by performing a fast Fourier transform (FFT) or a discrete Fourier transform (DFT).

[0184] The subcarrier mapping component 1210 is used to map the subsequence to continuous frequency subcarriers after conversion to the frequency domain, for example by executing software. The subsequence has a complementary comb structure as described elsewhere in this document, and mapping the frequency domain subsequence to continuous subcarriers actually also realizes multiplexing. The frequency domain to time domain converter 1212 is used to convert the resulting frequency domain multiplexed signal from the frequency domain to the time domain, for example by executing software, such as by executing an inverse FFT (inverse FFT, IFFT) or an inverse DFT (inverse DFT, IDFT). Some embodiments may use CP, and the CP inserter 1214 is an illustration of these embodiments. The CP inserter 1214 is used to process CP insertion, for example by executing software.

[0185] One or more power amplifier components 1216 illustrate transmit chain components that may be provided for transmitting the multiplexed signal. For example, there may be one PA / transmit chain per antenna or antenna element 1218, or multiple antennas or antenna elements may be coupled to one PA / transmit chain.

[0186] Fig.13 1 is a block diagram of an exemplary receiver according to one embodiment. The exemplary receiver 1300 includes a CP remover 1302, a time domain to frequency domain converter 1304, a subcarrier demapper 1306, a beam detector 1214, an equalizer 1408, a post-processor 1210, a DMRS generator 1311, and a channel estimator 1312 interconnected as shown. Other embodiments may include additional, fewer, or different elements interconnected in a similar or different manner.

[0187] Fig.13 The elements shown in can be implemented in any of a variety of ways, such as in one or more components of hardware, firmware, or execution software. As described elsewhere herein, the present invention is not limited to any particular type of implementation, for example, the implementation details between different devices may be different.

[0188] Receiver operations may include removing the CP, converting to the frequency domain, such as by FFT or DFT, and subcarrier demapping and demultiplexing. Subcarrier demapping may demultiplex multiplexed synchronization signals, multiplexed reference signals (e.g., DMRS or SRS), or may also or alternatively demultiplex data signals. In a beam scanning embodiment, the demultiplexed synchronization signal is provided to the beam detector 1314 for beam detection. The receiver may also or alternatively support or perform channel estimation, which is performed by the channel estimator 1312 based on multiple received reference signals and a receiver version of a locally generated reference signal. Data signals received together with one or more synchronization signals and / or one or more reference signals or received separately from one or more synchronization signals and / or one or more reference signals may be processed or equalized and / or subjected to any other type of post-processing, such as further processing based on transmitter precoding.

[0189] In the exemplary receiver 1300, a CP remover 1302 is used to remove a cyclic prefix, for example, by executing software; a time domain to frequency domain converter 1304 is used to convert a received time domain signal to a frequency domain, for example, by executing software, for example, by performing FFT or DFT; a subcarrier demapper 1306 is used to perform subcarrier demapping, for example, by executing software. In an embodiment supporting multiplexed synchronization signals, a beam detector 1314 is used to perform beam detection based on multiple narrow beams and associated synchronization signals rather than a single wider beam, for example, by executing software. An equalizer 1308 is used to equalize a received data signal output from the subcarrier demapper 1306, for example, by executing software. A channel estimator 1312 is used to process a received reference signal output from the subcarrier demapper 1306, for example, by executing software, and generate a channel estimate provided to the equalizer 1308; a post-processor 1310 is used to process the output of the equalizer, for example, by executing software. The channel estimator 1312 receives a receiver version of the reference signal from the DMRS generator 1311 for channel estimation in the exemplary receiver 1300. More generally, the channel estimator 1312 can be used to generate or otherwise obtain a receiver version of the reference signal, such as by executing software, and use them to perform channel estimation. For example, the post-processor 1310 can take into account any transmit processing performed at the transmitter.

[0190] Fig.13 The features that may be provided or supported at a receiver are intended to be illustrated, but the receiver need not provide or support all of the illustrated features. For example, a receiver may support multiplexed synchronization signals but not multiplexed reference signals, or may support multiplexed reference signals but not multiplexed synchronization signals. It should also be understood that not all receivers are intended to support multiplexed synchronization signals. Fig.13 All signals shown in must be received at the same time. Sync signals, data signals, and reference signals can be received and processed at different times.

[0191] and Fig.12 similar, Fig.13 are illustrative, non-limiting examples.

[0192] The present invention includes various embodiments, including not only method embodiments, but also other embodiments, such as apparatus embodiments and embodiments involving non-transitory computer-readable storage media. The embodiments may incorporate the features disclosed herein alone or in combination.

[0193] The apparatus may include a processor and a non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium being coupled to the processor and storing a program for execution by the processor. Figure 3 For example, processors 210, 260, 276 may be or include one or more processors, and each memory 208, 258, 278 is an example of a non-transitory computer-readable storage medium in ED 110 and TRP 170, 172. The non-transitory computer-readable storage medium need not be provided only in conjunction with the processor, but may be provided separately, for example, in a computer program product.

[0194] As an illustrative example, a program stored in (or on) a non-transient computer-readable storage medium may include instructions for or for causing a processor to transmit signaling through a first communication device and / or a second communication device in a wireless communication network. The signaling is related to a subsequence of a base sequence. The program may include instructions for or for causing a processor to send (or receive from a first communication device through a second communication device) a multiplexed signal to a second communication device through a first communication device, the multiplexed signal multiplexing a signal based on a corresponding subsequence in a subsequence. As in other embodiments, each subsequence in a subsequence includes a unique subset of non-continuous values ​​from a base sequence, and these values ​​from the base sequence are equally spaced by one or more zero values ​​and are located at different positions within each subsequence in the subsequence. The signal includes components equally spaced and located at different positions within each signal in the signal, so that the continuous component of the multiplexed signal includes components of different signals in a plurality of signals.

[0195] Embodiments related to an apparatus or non-transitory computer-readable storage medium may include any one or more of the following features, which are also discussed elsewhere herein, for example:

[0196] The base sequence may be or include a binary sequence;

[0197] The base sequence may be or include a Gold sequence or a ZC sequence;

[0198] The corresponding subsequence on which the multiplexed signal is based may be a unique subset of non-continuous π / 2-BPSK modulation values ​​from a base sequence;

[0199] The length of the base sequence may be L=N / M, where N is the number of frequency subcarriers and M is the number of corresponding subsequences;

[0200] The modulation value of the base sequence may be or include the modulation sequence

[0201] The corresponding subsequence may include M corresponding subsequences: Where m=0, 1, ..., M-2 is the index, and K=L / M, when m=0, And when m=M-1,

[0202] The subsequence-based signal may include M signals

[0203] The subsequence-based signal may be or include a DMRS associated with the first communication device;

[0204] The subsequence-based signal may be or include an SRS associated with the first communication device;

[0205] The subsequence-based signal may be or include a synchronization signal associated with different respective antenna beams for a simultaneous multi-beam synchronization channel;

[0206] The program includes instructions for or for causing the processor to transmit the signaling by sending the signaling to the second communication device via the first communication device;

[0207] The program includes instructions for or for causing the processor to transmit signaling by receiving signaling from the second communication device via the first communication device;

[0208] The program includes instructions for or for causing the processor to transmit signaling by receiving signaling from a third communication device via the first communication device;

[0209] The program includes instructions for or for causing the processor to transmit signaling by receiving signaling from the first communication device via the second communication device;

[0210] The program includes instructions for or for causing the processor to transmit the signaling by sending the signaling to the first communication device via the second communication device;

[0211] The program includes instructions for or for causing the processor to transmit the signaling by receiving the signaling from the third communication device via the second communication device.

[0212] Embodiments disclosed herein include transmission of a multiplexed signal (e.g., DMRS, SRS, or synchronization signal for a simultaneous multi-beam synchronization channel) in the time domain based on a comb structure so that the multiplexed signal can have a low PAPR. The choice of a base sequence for the multiplexed signal is secondary, although certain types of sequences (e.g., Gold sequences and ZC sequences) may be preferred.

[0213] For comb-tooth structure-based signals in the frequency domain and time domain, each signal, and accordingly, each antenna port or beam in some embodiments, is associated with a unique set of subcarriers in the frequency domain and pulses in the time domain. The benefit of introducing a comb-tooth structure in the time domain is low PAPR. For example, for the corresponding port or beam, the pulses of each signal occupy different comb tooth sets, so in some embodiments, the PAPR of the combined time domain sequence is similar to the PAPR of SC-OQAM. In other words, each reference signal or beam can use a unique comb tooth set in the time domain, which makes the multiplexed multi-port or multi-beam signal a single carrier signal with low PAPR. In some embodiments, combined with π / 2 rotation, the PAPR of the multiplexed signal can be further reduced.

[0214] In some embodiments, a comb structure in the frequency domain with different corresponding frequency domain subcarrier sets for multiplexed signals can provide orthogonality between signals. In some embodiments, a dual comb structure is provided in the frequency domain and the time domain, so that the reference signal or beam signal components can be orthogonal to each other, which enables interference-free or at least interference-reduced channel estimation or beam detection.

[0215] Therefore, the time domain comb structure can be used to provide low PAPR of the multiplexed signals, while the frequency domain comb structure can be used to provide orthogonality between the multiplexed signals.

[0216] Low PAPR may be advantageous for any of various types of multiplexed signals, including but not limited to DMRS and synchronization signals. For simultaneous multi-beam synchronization channels, multiplexing of different beams may be advantageous in any of the following ways: reducing overhead, reducing beam scanning time, refining beam scanning relative to using wider beams, or improving beam spatial resolution.

[0217] Although the present invention has been described with reference to illustrative embodiments, this description is not intended to be understood in a limiting sense. Various modifications and combinations of the illustrative embodiments and other embodiments of the present invention will be apparent to those skilled in the art after reference to this specification. Therefore, the appended claims include any such modifications or embodiments.

[0218] Additionally or alternatively, for example, features disclosed herein in the context of method embodiments may be implemented in apparatus or computer program product embodiments. Furthermore, although embodiments are primarily described in the context of methods and apparatus, other implementations are contemplated, for example, as instructions stored in one or more non-transitory computer-readable media. These media may store programming or instructions to perform any of a variety of methods consistent with the present invention.

[0219] The disclosed embodiments are also not intended to be limited to any particular application. For example, the proposed scheme can also be used for integrated sensing and communication (ISAC). In ISAC, the reflection paths need to fall within the CP region so that they do not generate ISI between each other. When the CP length is not enough to accommodate the reflection paths, zero padding can be used to create additional guard space. For example, this type of application may be suitable for using DFT-s-OFDM / SC-OQAM in ISAC.

[0220] Although aspects of the present invention have been described with reference to specific features and embodiments of the present invention, various modifications and combinations may be made without departing from the scope of the present invention. Therefore, the specification and the drawings are only regarded as an explanation of some embodiments of the present invention as defined by the appended claims, and any and all modifications, variants, combinations or equivalents within the scope of the present invention are considered to be covered. Although the embodiments and potential advantages have been described in detail, various changes, substitutions and modifications may be made without departing from the present invention as defined by the appended claims. In addition, the scope of the present application is not limited to the specific embodiments of the processes, machines, manufactured products, material compositions, parts, methods and steps described in the specification. According to the disclosure of the present invention, it will be readily understood by those of ordinary skill in the art that processes, machines, manufactured products, material compositions, parts, methods or steps (including currently existing or later developed) that perform substantially the same functions as the corresponding embodiments described herein or achieve substantially the same results as the corresponding embodiments described herein may be used according to the present invention. Therefore, the appended claims are intended to include these processes, machines, manufactured products, material compositions, parts, methods or steps within their scope.

[0221] In addition, any module, component, or device that executes instructions as exemplified herein may include or otherwise access one or more non-transitory computer-readable or processor-readable storage media to store information, such as computer-readable or processor-readable instructions, data structures, program modules, and / or other data. A non-exhaustive list of examples of non-transitory computer-readable or processor-readable storage media includes magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, compact disc read-only memory (CD-ROM), digital video disc or digital versatile disc (DVD), Blu-ray discs, and the like. TM (Blu-ray Disc TM ) or other optical storage, volatile and non-volatile, removable and non-removable media implemented in any method or technology, random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other storage technology. Any of these non-transitory computer-readable or processor-readable storage media can be part of the device or can be connected to or connected to the device. Any application or module described herein can be implemented using computer-readable and executable instructions, or the processor can be stored or otherwise saved by such non-transitory computer-readable or processor-readable storage media.

Claims

1. A method comprising: A first communication device in a wireless communication network transmits signaling associated with a subsequence of a base sequence; The first communication device transmits a multiplexed signal including a plurality of signals based on corresponding subsequences in the subsequences to a second communication device in the wireless communication network, Each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, The plurality of signals include components that are equally spaced and located at different locations within each of the signals, such that successive components of the multiplexed signal include components of different ones of the plurality of signals.

2. The method according to claim 1, characterized in that The base sequence comprises a binary sequence.

3. The method according to claim 1, characterized in that The base sequence includes a Gold sequence or a Zadoff-ChuZC sequence.

4. The method according to any one of claims 1 to 3, characterized in that The corresponding subsequence comprises a unique subset of non-contiguous π / 2 binary phase shift keying BPSK modulation values ​​from the base sequence.

5. The method according to claim 4, characterized in that The length of the base sequence is L=N / M, where N is the number of frequency subcarriers and M is the number of the corresponding subsequences.

6. The method according to claim 5, characterized in that The modulation value of the base sequence includes the modulation sequence 7. The method according to claim 6, characterized in that The corresponding subsequences include M corresponding subsequences: Where m = 0, 1, ..., M-2 is the index, and K = L / M, When m=0, When m=M-1, 8. The method according to claim 7, characterized in that The plurality of signals include M signals:

9. The method according to any one of claims 1 to 8, characterized in that The plurality of signals includes a demodulation reference signal DMRS associated with the first communications device.

10. The method according to any one of claims 1 to 8, characterized in that The plurality of signals includes a sounding reference signal (SRS) associated with the first communications device.

11. The method according to any one of claims 1 to 8, characterized in that The plurality of signals include synchronization signals associated with different respective antenna beams.

12. The method according to any one of claims 1 to 11, characterized in that Transmitting the signaling includes: the first communication device sending the signaling to the second communication device.

13. The method according to any one of claims 1 to 11, characterized in that Transmitting the signaling includes: the first communications device receiving the signaling from the second communications device.

14. The method according to any one of claims 1 to 11, characterized in that Transmitting the signaling includes: the first communications device receiving the signaling from a third communications device.

15. A method comprising: A second communication device in the wireless communication network transmits signaling associated with a subsequence of the base sequence; The second communication device receives a multiplexed signal including a plurality of signals based on corresponding subsequences of the subsequences from the first communication device in the wireless communication network, Each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, The plurality of signals include components that are equally spaced and located at different locations within each of the signals, such that successive components of the multiplexed signal include components of different ones of the plurality of signals.

16. The method according to claim 15, characterized in that The base sequence comprises a binary sequence.

17. The method according to claim 15, characterized in that The base sequence includes a Gold sequence or a Zadoff-ChuZC sequence.

18. The method according to any one of claims 15 to 17, characterized in that The corresponding subsequence comprises a unique subset of non-contiguous π / 2 binary phase shift keying BPSK modulation values ​​from the base sequence.

19. The method according to claim 18, characterized in that The length of the base sequence is L=N / M, where N is the number of frequency subcarriers and M is the number of the corresponding subsequences.

20. The method according to claim 19, characterized in that The modulation value of the base sequence includes the modulation sequence 21. The method according to claim 20, characterized in that The corresponding subsequences include M corresponding subsequences: Where m = 0, 1, ..., M-2 is the index, and K = L / M, When m=0, When m=M-1, 22. The method according to claim 21, characterized in that The plurality of signals include M signals:

23. The method according to any one of claims 15 to 22, characterized in that The plurality of signals includes a demodulation reference signal DMRS associated with the first communications device.

24. The method according to any one of claims 15 to 22, characterized in that The plurality of signals includes a sounding reference signal (SRS) associated with the first communications device.

25. The method according to any one of claims 15 to 22, characterized in that The plurality of signals include synchronization signals associated with different respective antenna beams.

26. The method according to any one of claims 15 to 25, characterized in that Transmitting the signaling includes: the second communications device receiving the signaling from the first communications device.

27. The method according to any one of claims 15 to 25, characterized in that Transmitting the signaling includes: the second communication device sending the signaling to the first communication device.

28. The method according to any one of claims 15 to 25, characterized in that Transmitting the signaling includes: the second communication device receiving the signaling from a third communication device.

29. An apparatus comprising: processor; A non-transitory computer-readable storage medium, coupled to the processor and storing a program executed by the processor, wherein the program includes instructions for performing the following operations: A first communication device in a wireless communication network transmits signaling associated with a subsequence of a base sequence; The first communication device transmits a multiplexed signal including a plurality of signals based on corresponding subsequences in the subsequences to a second communication device in the wireless communication network, Each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, The plurality of signals include components that are equally spaced and located at different locations within each of the signals, such that successive components of the multiplexed signal include components of different ones of the plurality of signals.

30. The device according to claim 29, characterized in that The base sequence comprises a binary sequence.

31. The device according to claim 29, characterized in that The base sequence includes a Gold sequence or a Zadoff-ChuZC sequence.

32. The device according to any one of claims 29 to 31, characterized in that The corresponding subsequence comprises a unique subset of non-contiguous π / 2 binary phase shift keying BPSK modulation values ​​from the base sequence.

33. The device according to claim 32, characterized in that The length of the base sequence is L=N / M, where N is the number of frequency subcarriers and M is the number of the corresponding subsequences.

34. The device according to claim 33, characterized in that The modulation value of the base sequence includes the modulation sequence 35. The device according to claim 34, characterized in that The corresponding subsequences include M corresponding subsequences: Where m = 0, 1, ..., M-2 is the index, and K = L / M, When m=0, When m=M-1, 36. The device according to claim 35, characterized in that The plurality of signals include M signals:

37. The device according to any one of claims 29 to 36, characterized in that The plurality of signals includes a demodulation reference signal DMRS associated with the first communications device.

38. The device according to any one of claims 29 to 36, characterized in that The plurality of signals includes a sounding reference signal (SRS) associated with the first communications device.

39. The device according to any one of claims 29 to 36, characterized in that The plurality of signals include synchronization signals associated with different respective antenna beams.

40. The device according to any one of claims 29 to 39, characterized in that The program includes instructions for transmitting the signaling by sending the signaling to the second communication device.

41. The device according to any one of claims 29 to 39, characterized in that The program includes instructions for transmitting the signaling by receiving the signaling from the second communication device.

42. The device according to any one of claims 29 to 39, characterized in that The program includes instructions for transmitting the signaling by receiving the signaling from a third communication device.

43. An apparatus comprising: processor; A non-transitory computer-readable storage medium, coupled to the processor and storing a program executed by the processor, wherein the program includes instructions for performing the following operations: A second communication device in the wireless communication network transmits signaling associated with a subsequence of the base sequence; The second communication device receives a multiplexed signal including a plurality of signals based on corresponding subsequences of the subsequences from the first communication device in the wireless communication network, Each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, The plurality of signals include components that are equally spaced and located at different locations within each of the signals, such that successive components of the multiplexed signal include components of different ones of the plurality of signals.

44. The device according to claim 43, characterized in that The base sequence comprises a binary sequence.

45. The device according to claim 43, characterized in that The base sequence includes a Gold sequence or a Zadoff-ChuZC sequence.

46. ​​The device according to any one of claims 43 to 45, characterized in that The corresponding subsequence comprises a unique subset of non-contiguous π / 2 binary phase shift keying BPSK modulation values ​​from the base sequence.

47. The device according to claim 46, characterized in that The length of the base sequence is L=N / M, where N is the number of frequency subcarriers and M is the number of the corresponding subsequences.

48. The device according to claim 47, characterized in that The modulation value of the base sequence includes the modulation sequence 49. The device according to claim 48, characterized in that The corresponding subsequences include M corresponding subsequences: Where m = 0, 1, ..., M-2 is the index, and K = L / M, When m=0, When m=M-1, 50. The device according to claim 49, characterized in that The plurality of signals include M signals:

51. The device according to any one of claims 43 to 50, characterized in that The plurality of signals includes a demodulation reference signal DMRS associated with the first communications device.

52. The device according to any one of claims 43 to 50, characterized in that The plurality of signals includes a sounding reference signal (SRS) associated with the first communications device.

53. The device according to any one of claims 43 to 50, characterized in that The plurality of signals include synchronization signals associated with different respective antenna beams.

54. The device according to any one of claims 43 to 53, characterized in that The program includes instructions for transmitting the signaling by receiving the signaling from the first communication device.

55. The device according to any one of claims 43 to 53, characterized in that The program includes instructions for transmitting the signaling by sending the signaling to the first communication device.

56. The device according to any one of claims 43 to 53, characterized in that The program includes instructions for transmitting the signaling by receiving the signaling from a third communication device.

57. A computer program product comprising a non-transitory computer readable medium storing a program for execution by a processor, the program comprising instructions for: A first communication device in a wireless communication network transmits signaling associated with a subsequence of a base sequence; The first communication device transmits a multiplexed signal including a plurality of signals based on corresponding subsequences in the subsequences to a second communication device in the wireless communication network, Each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, The plurality of signals include components that are equally spaced and located at different locations within each of the signals, such that successive components of the multiplexed signal include components of different ones of the plurality of signals.

58. A computer program product comprising a non-transitory computer readable medium storing a program for execution by a processor, the program comprising instructions for: A second communication device in the wireless communication network transmits signaling associated with a subsequence of the base sequence; The second communication device receives a multiplexed signal including a plurality of signals based on corresponding subsequences of the subsequences from the first communication device in the wireless communication network, Each of the subsequences comprises a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, The plurality of signals include components that are equally spaced and located at different locations within each of the signals, such that successive components of the multiplexed signal include components of different ones of the plurality of signals.

59. A non-transitory computer-readable medium storing a program for execution by a processor, the program comprising instructions for performing the method according to any one of claims 1 to 28.

60. A computer program product comprising instructions which, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 28.

61. An apparatus comprising a processor, the processor being configured to cause the apparatus to perform a method according to any one of claims 1 to 28.

62. A processor of a device, the processor being configured to cause the device to perform the method according to any one of claims 1 to 28.

63. A system comprising: A first communication device for transmitting a multiplexed signal comprising a plurality of signals, each of the plurality of signals being based on a corresponding subsequence of a plurality of subsequences of a base sequence, each of the corresponding subsequences comprising a unique subset of non-contiguous values ​​from the base sequence, the non-contiguous values ​​being equally spaced by one or more zero values ​​and being located at different positions within each of the subsequences, the plurality of signals comprising components equally spaced and located at different positions within each of the signals, such that continuous components of the multiplexed signal comprise components of different signals of the plurality of signals; The second communication device is configured to receive the multiplexed signal and process each of the multiple signals of the multiplexed signal.

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