WO2020220176A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020220176A1
WO2020220176A1 PCT/CN2019/084864 CN2019084864W WO2020220176A1 WO 2020220176 A1 WO2020220176 A1 WO 2020220176A1 CN 2019084864 W CN2019084864 W CN 2019084864W WO 2020220176 A1 WO2020220176 A1 WO 2020220176A1
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Prior art keywords
sequence
mod
integer
base sequences
absolute value
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PCT/CN2019/084864
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English (en)
Chinese (zh)
Inventor
位祎
李雪茹
曲秉玉
周永行
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2019/084864 priority Critical patent/WO2020220176A1/fr
Priority to PCT/CN2019/095585 priority patent/WO2020220475A1/fr
Priority to CN201980096769.9A priority patent/CN114026932A/zh
Publication of WO2020220176A1 publication Critical patent/WO2020220176A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • This application relates to the field of communications, in particular to communication methods and devices in the field of communications.
  • uplink reference signals such as uplink demodulation reference signal (DMRS) and uplink sounding reference signal (SRS)
  • DMRS uplink demodulation reference signal
  • SRS uplink sounding reference signal
  • the base sequence may be generated according to the ZC (Zadoff-Chu) sequence.
  • the base sequence may be the ZC sequence itself, or the base sequence may be a sequence generated by the ZC sequence through cyclic expansion or interception.
  • the ZC sequence of length N can be expressed in the following form:
  • N is the length of the ZC sequence, which is an integer greater than 1;
  • q is the root of the ZC sequence, which is a natural number that is relatively prime to N, and 0 ⁇ q ⁇ N.
  • This article defines the reference sequence generated from the ZC sequence as the base sequence as Where q is the root of the ZC sequence, and ⁇ is the value determined by the time domain cyclic shift.
  • the upstream sounding reference signal is SRS
  • the terminal device needs to determine the SRS sequence according to the base sequence before sending the SRS.
  • 3GPP 3rd generation partnership project
  • each cell can allocate two base sequences of the same length to the terminal equipment to generate the final transmitted SRS sequence.
  • each terminal device that transmits an SRS sequence of the same length on the same time-frequency resource uses the SRS sequence generated by the same base sequence in the group.
  • these terminal devices obtain orthogonality between the SRS sequences by using different time-domain cyclic shifts and/or time-frequency domain resources.
  • two base sequences with the same length in the same group are used as hopping sequences, that is, at different moments, the base sequence used by a terminal device can be designed between the two base sequences in this group.
  • the pattern of is hopping, and its purpose is to randomize inter-cell interference.
  • sequence hopping process on the same time-frequency resource, all terminal devices in a cell that send the same length SRS sequence still use the same base sequence to generate the SRS sequence. Therefore, in the current system, on the same time-frequency resource, there is only one available root for the SRS sequence of a cell.
  • the number of terminal devices in each cell is large (for example, 200), and the number of time-domain cyclic shifts that can obtain good orthogonality in the actual system and the number of available time-frequency domain resources are very limited. .
  • the current number of available SRS sequences in a cell is far from sufficient for the huge number of terminal devices.
  • the channel has time-varying characteristics, and the large SRS period causes the channel state information obtained through SRS to be easily outdated.
  • the channel state information during downlink data transmission is very different from the channel state information measured by the previous SRS, which seriously affects the system Performance.
  • the present application provides a communication method and device that can reduce the interference of different terminal devices in the same cell when transmitting SRS sequences on the basis of increasing the number of roots used in each cell, and improve system performance.
  • a communication method including: obtaining a reference signal sequence of length M, where M is an integer greater than 1, sending the reference signal sequence to a network device; wherein, the reference signal sequence is composed of The first base sequence of M is determined, the first base sequence belongs to the first sequence group, the number of base sequences of length M in the first sequence group is X, and the X base sequences have the same group Index, the X base sequences are determined by X ZC sequences of length N, N is an integer greater than 1, X is an integer greater than or equal to 2, and any two base sequences in the X base sequences correspond to The roots of the ZC sequence of are q 1 and (q 1 +V 1 )mod N, q 1 is an integer from 1 to N-1, V 1 is an integer, and the absolute value of V 1 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 , K 2 , K 3 and K 4 are all integers, K 1 >1, K 4 ⁇
  • a sequence group includes at least two base sequences of the same length
  • different terminal devices in the same cell can use at least two base sequences of the same length in the sequence group.
  • Determine the reference signal sequence and send the reference signal sequence on the same time-frequency resource, so that in the cell corresponding to the sequence group, the number of terminal devices that can simultaneously send reference signals of the same length at the same frequency increases, increasing the number of reference signals
  • the number of sequences can also ensure that the interference power between the reference signal sequences is very low, which is beneficial to improve the accuracy of channel measurement by the network equipment based on the reference signal.
  • the value range of the absolute value of V 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 >1, K 4 ⁇ N-1, when N is an odd number, When N is even, Not only can the interference power between the reference signal sequences generated based on any two base sequences in the same sequence group and any cyclic shift value be sufficiently low, for example, the sequence generated by the base sequences r 1 (m) and ⁇ 1 And the sequence generated by the base sequence r 2 (m) and ⁇ 2 The interference power is low enough, and it can make multiple reference signal sequences generated by the same base sequence and multiple cyclic shift values to generate the reference signal sequence generated by another base sequence and any cyclic shift value.
  • the total interference power is sufficiently low, for example, f reference signal sequences generated from the base sequence r 1 (m) and f different cyclic shift values ⁇ 1 , ⁇ 2 ,..., ⁇ f
  • the total interference power generated is small enough, where f is a positive integer greater than or equal to 1.
  • the total interference here refers to the expected value or variance value or instantaneous value of the total interference power, which is not limited. In this way, different terminal devices in the same cell can use different base sequences in the sequence group corresponding to the cell to generate their respective reference signal sequences, and can send them on the same time-frequency resource.
  • the method before the terminal device acquires the reference signal sequence of length M, the method further includes: the terminal device receives configuration information sent by the network device, and according to the configuration information The first base sequence is determined, and the reference signal sequence is determined according to the first base sequence.
  • the embodiment of the present application defines the second sequence group as a set of all base sequences having the same group index (or cell index). Therefore, the above-mentioned first sequence group is a set of all or part of the base sequences in the second sequence group.
  • the first sequence group is the set of all base sequences in the second sequence group.
  • the first sequence group is the second sequence group.
  • the configuration information may include first indication information and second indication information, where the first indication information is used to indicate the first sequence group; the second indication information is used to indicate the first sequence group in the first sequence group.
  • Base sequence. The terminal device may receive the first indication information and the second indication information, and obtain a reference signal sequence of length M according to the first indication information and the second indication information.
  • the first sequence group is a collection of partial base sequences in the second sequence group.
  • the foregoing configuration information may include first indication information, second indication information, and third indication information.
  • the terminal device may obtain a reference signal sequence of length M according to the first indication information, the second indication information, and the third indication information.
  • the terminal device can determine the final reference signal sequence according to the above three indication information in various ways. For example, the terminal device may determine the first sequence group through the first indication information and the third indication information, and then determine the first base sequence based on the above-mentioned first sequence group through the second indication information, thereby determining the reference according to the first base sequence Signal sequence.
  • the terminal device may determine the potential multiple base sequences in the second sequence group through the first indication information and the second indication information, and then determine based on the first base sequence among the multiple base sequences through the third indication information, thereby The reference signal sequence is determined according to the first base sequence.
  • the terminal device may also determine the first base sequence in other ways, which is not limited in this embodiment of the application.
  • the first sequence group belongs to Y sequence groups, and Y is an integer greater than or equal to 2; the y-th sequence group in the Y sequence groups
  • the number of base sequences with length M is X (y)
  • the X (y) base sequences with length M are determined by X (y) ZC sequences with length N
  • X (y) is An integer greater than or equal to 2
  • the roots of the ZC sequence corresponding to any two of the base sequences of length M in the X (y) base sequences are q′ and (q′+V′) mod N
  • q′ is An integer from 1 to N-1
  • V' is an integer
  • each sequence group in the Y sequence groups includes at least two base sequences with a length of M, so that each cell corresponding to the Y sequence groups can simultaneously send terminals with the same length of reference signals
  • the number of devices is at least doubled. While increasing the number of reference signal sequences, it can ensure that the interference power between the reference signal sequences generated by any two base sequences of the same length in the same sequence group is very low. , The interference between reference signal sequences is much lower than that of the signal, which is conducive to flexible network planning and improves the accuracy of channel measurement of network equipment based on reference signal sequences.
  • the absolute value of V 1 belongs to the set
  • the absolute value of V 1 belongs to the set Represents the smallest integer greater than or equal to A.
  • the absolute value of V′ belongs to the set
  • the absolute value of V'belongs to the set Represents the smallest integer greater than or equal to A.
  • the first threshold and the second threshold may be the same or different, which is not limited in the embodiment of the present application. It should be understood that the foregoing first threshold may be determined by a network device, and the terminal device does not need to know the first threshold. In other words, the network device may determine the first threshold, and determine one or more values of the absolute value of V 1 and/or the absolute value of V′ according to the first threshold and N, and the network device may determine the absolute value of V 1 One or more values of the absolute value of V and/or the absolute value of V'are assigned to the terminal device, and the terminal device can be directly based on one or more of the absolute value of V 1 and/or the absolute value of V'sent by the network device. Take a value, determine the base sequence, and then determine the reference signal sequence and send it. The second threshold is the same and will not be repeated here.
  • the absolute value of V 1 and/or the range of the absolute value of V' can be optimized for different ⁇ and different channel coherence bandwidths, so that under the frequency domain flatness of different channels, when there is
  • ⁇ terminal devices determine reference signal sequences based on the same base sequence of a sequence group and ⁇ different cyclic shift values, the interference power of these reference signal sequences to the reference signal sequence determined based on another base sequence of the sequence group Very low.
  • the embodiment of the present application does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • X is an integer greater than or equal to 3
  • the X base sequences include three base sequences, and the roots of the ZC sequence corresponding to the three base sequences They are q 2 , (q 2 +V 2 ) mod N and (q 2 + W 1 ) mod N respectively, where q 2 is an integer from 1 to N-1, V 2 is an integer, and the absolute value of V 2 is The value range is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 1 is an integer, and the value range of the absolute value of W 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the three base sequences in this embodiment may include at least one of the two base sequences in the foregoing embodiment, or may be other sequences different from the foregoing two base sequences, that is, q 2 and q 1 may be equal , It may not be equal, V 2 and V 1 may be equal or not, which is not limited in the embodiment of the present application.
  • W 1 may be determined according to V 2
  • V 2 may be determined according to W 1
  • V 2 and W 1 may be independently designed values, and there is no clear and direct relationship between each other.
  • This application The embodiment also does not limit this.
  • X is an integer greater than or equal to 4
  • the X base sequences include four base sequences, and the roots of the ZC sequences corresponding to the four base sequences are respectively Is q 3 , (q 3 +V 3 ) mod N, (q 3 +W 2 ) mod N, and (q 3 +O 1 ) mod N, where q 3 is an integer from 1 to N-1, and V 3 is Integer, and the value range of the absolute value of V 3 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 2 is an integer, and the value range of the absolute value of W 2 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 1 is an integer, and the range of the absolute value of O 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the four base sequences in this embodiment may include at least one of the base sequences mentioned in the above-mentioned embodiments, or may be other sequences different from the above-mentioned base sequences, that is, q 3 and q 1 or q 2 It can be equal or unequal.
  • V 3 and V 1 or V 2 can be equal or unequal.
  • W 2 and W 1 can be equal or unequal, which is not limited in the embodiment of the application.
  • W 2 may be determined based on V 3
  • V 3 may be determined based on W 2
  • V 3 and W 2 may be independently designed values, and there is no clear and direct relationship between each other.
  • O 1 can be determined based on V 3
  • V 3 can be determined based on O 1
  • V 3 and O 1 can be independently designed values, and there is no clear and direct relationship between them.
  • X is an integer greater than or equal to 5
  • the X base sequences include five base sequences, and the five base sequences correspond to the roots of the ZC sequence They are q 4 , (q 4 +V 4 )mod N, (q 4 +W 3 )mod N, (q 4 +O 2 )mod N and (q 4 +P)mod N, where q 4 is 1.
  • V 4 is an integer
  • the range of the absolute value of V 4 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • W 3 is an integer
  • the absolute value of W 3 The value range of is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • O 2 is an integer
  • the absolute value of O 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • P is an integer
  • the range of the absolute value of P is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the five base sequences in this embodiment may include at least one of the base sequences already mentioned in the above-mentioned embodiment, or may be other sequences different from the above-mentioned base sequence, that is, q 4 and q 1 , q 2 Or q 3 can be equal or unequal, V 4 and V 1 , V 2 or V 3 can be equal or unequal, W 3 and W 1 or W 2 can be equal or unequal, O 2 and O 1 may be equal or unequal, which is not limited in the embodiment of the present application.
  • W 3 may be determined according to V 4
  • V 4 may be determined according to W 3
  • V 4 and W 3 may be independently designed values, and there is no clear and direct relationship between each other.
  • O 2 can be determined based on V 4
  • V 4 can be determined based on O 2
  • V 4 and O 2 can be independently designed values, and there is no clear and direct relationship between each other.
  • P can be determined based on V 4 , or V 4 can be determined based on P, or V 4 and P can be independently designed values, and there is no clear and direct relationship between them.
  • another communication method including: sending configuration information, the configuration information is used to configure a first sequence group, the number of base sequences of length M in the first sequence group is X, so The X base sequences have the same group index, the X base sequences are determined by X ZC sequences of length N, N is an integer greater than 1, X is an integer greater than or equal to 2, and the X
  • the roots of the ZC sequence corresponding to any two base sequences in the base sequence are q 1 and (q 1 +V 1 ) mod N respectively, q 1 is an integer from 1 to N-1, V 1 is an integer, and the absolute value of V 1
  • the value range is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 , K 2 , K 3 and K 4 are all integers, K 1 >1, K 4 ⁇ N-1, when N is an odd number, When N is even, Represents the largest integer less than or equal to A, [A, B] represents a collection of integers greater than
  • the first sequence group belongs to Y sequence groups, and Y is an integer greater than or equal to 2; the y-th sequence group in the Y sequence groups
  • the number of base sequences with length M is X (y)
  • the X (y) base sequences with length M are determined by X (y) ZC sequences with length N
  • X (y) is An integer greater than or equal to 2
  • the roots of the ZC sequence corresponding to any two of the base sequences of length M in the X (y) base sequences are q′ and (q′+V′) mod N
  • q′ is An integer from 1 to N-1
  • V' is an integer
  • the absolute value of V 1 belongs to the set
  • the absolute value of V 1 belongs to the set Represents the smallest integer greater than or equal to A.
  • X is an integer greater than or equal to 3
  • the X base sequences include three base sequences, and the roots of the ZC sequence corresponding to the three base sequences They are q 2 , (q 2 +V 2 ) mod N and (q 2 + W 1 ) mod N respectively, where q 2 is an integer from 1 to N-1, V 2 is an integer, and the absolute value of V 2 is The value range is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 1 is an integer, and the value range of the absolute value of W 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • X is an integer greater than or equal to 4
  • the X base sequences include four base sequences, and the roots of the ZC sequences corresponding to the four base sequences are respectively Is q 3 , (q 3 +V 3 ) mod N, (q 3 +W 2 ) mod N, and (q 3 +O 1 ) mod N, where q 3 is an integer from 1 to N-1, and V 3 is Integer, and the value range of the absolute value of V 3 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 2 is an integer, and the value range of the absolute value of W 2 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 1 is an integer, and the range of the absolute value of O 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • X is an integer greater than or equal to 5
  • the X base sequences include five base sequences, and the five base sequences correspond to the roots of the ZC sequence They are q 4 , (q 4 +V 4 )mod N, (q 4 +W 3 )mod N, (q 4 +O 2 )mod N and (q 4 +P)mod N, where q 4 is 1.
  • V 4 is an integer
  • the range of the absolute value of V 4 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • W 3 is an integer
  • the absolute value of W 3 The value range of is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • O 2 is an integer
  • the absolute value of O 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • P is an integer
  • the range of the absolute value of P is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • a device for executing the above-mentioned aspects or methods in any possible implementation manners of the aspects.
  • the device includes a unit for executing the foregoing aspects or methods in any possible implementation manners of the aspects.
  • the device may include modules that perform one-to-one correspondence of the methods/operations/steps/actions described in the above aspects.
  • the modules may be hardware circuits, software, or hardware circuits combined with software. .
  • a device which includes a communication interface, a memory, and a processor.
  • the processor is configured to implement the foregoing aspects or methods in any possible implementation manner of each aspect
  • the memory is coupled with the processor.
  • the communication interface, the memory, and the processor communicate with each other through an internal connection path, the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so as to implement the foregoing aspects or any possible aspects of each aspect. The method in the implementation mode.
  • a system in a fifth aspect, includes a device for implementing any one of the foregoing first aspect or the first aspect, and a device for implementing any one of the foregoing second or second aspects.
  • a possible method of implementation; or the system includes a device for implementing the third aspect or any of the possible methods of the third aspect, and a device for implementing any of the fourth aspect or the fourth aspect Possible methods of implementation.
  • the system includes a device for implementing a method executed by a terminal device and a device for implementing a method executed by a network device.
  • a computer program product includes: computer program code, when the computer program code is run by a computer, the computer can execute each of the above aspects or any of the possibilities The method in the implementation mode.
  • a computer-readable medium for storing instructions that, when the instructions run on a computer, cause the computer to execute the above aspects or the methods in any possible implementation manners of the aspects Instructions.
  • the embodiments of the present application provide a chip system, which includes one or more processors, configured to call and execute instructions stored in the memory from the memory, so that the above aspects or any of the above aspects The methods in one possible implementation are executed.
  • the chip system can be composed of chips, or can include chips and other discrete devices.
  • Fig. 1 shows a schematic diagram of an application scenario of an embodiment of the present application.
  • Fig. 2 shows a schematic flowchart of a communication method according to an embodiment of the present application.
  • Figure 3 shows a schematic diagram of a sequence group in an embodiment of the present application.
  • Fig. 4 shows a schematic diagram of another sequence group in an embodiment of the present application.
  • Fig. 5 shows a schematic block diagram of a device according to an embodiment of the present application.
  • Fig. 6 shows a schematic block diagram of another apparatus according to an embodiment of the present application.
  • Fig. 7 shows a schematic block diagram of another apparatus according to an embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal device involved in the embodiments of the present application may be referred to as a terminal for short, which may be a device with a wireless transceiver function.
  • the terminal can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (such as aeroplane, balloon, satellite, etc.).
  • the terminal equipment may be user equipment (UE).
  • UEs include handheld devices, vehicle-mounted devices, wearable devices, or computing devices with wireless communication functions.
  • the UE may be a mobile phone, a tablet computer, or a computer with wireless transceiver function.
  • Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in telemedicine, and smart Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the device used to implement the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to implement the function, such as a chip system, and the device may be installed in the terminal.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device used to implement the functions of the terminal is an example to describe the technical solutions provided by the embodiments of the present application.
  • the network device in the embodiment of the application may be a device used to communicate with a terminal device.
  • the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) in the LTE system can also be the Node B (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved Node B in the LTE system.
  • NodeB, NB Node B
  • WCDMA wideband code division multiple access
  • a base station may be a device that is deployed in a wireless access network and can communicate with a terminal wirelessly.
  • Base stations may come in many forms, such as macro base stations, micro base stations, relay stations, and access points.
  • the base station involved in the embodiment of this application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be called a transmission reception point (TRP) or gNB (generation NodeB) .
  • the device used to implement the function of the network device may be a network device; it may also be a device capable of supporting the network device to implement the function, such as a chip system, and the device may be installed in the network device.
  • the device for implementing the functions of the network equipment is a network device as an example to describe the technical solutions provided by the embodiments of the present application.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as they can communicate according to the methods provided in the embodiments of the application, for example, the execution of the methods provided in the embodiments of the application
  • the main body can be a terminal device or a network device, or a functional module that can execute a program in the terminal device or the network device.
  • various aspects or features of the embodiments of the present application may be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, various other media capable of storing, containing, and/or carrying instructions and/or data.
  • Fig. 1 shows a communication system 100 to which an embodiment of the present application can be applied.
  • the communication system 100 may include one or more network devices 110 and one or more terminal devices 120 located within the coverage area of the network device 110.
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.
  • Base sequence base sequence
  • ZC sequence ZC sequence
  • the sequence of the uplink reference signal (such as DMRS, SRS) is generated based on the base sequence. For example, if the base sequence of length M is r(m), the sequence generated by the base sequence can be:
  • A is a complex number
  • ⁇ is a real number determined by a time-domain cyclic shift (also called a cyclic shift value in this article)
  • j Is an imaginary unit
  • exp represents an exponential function with e as the base.
  • the base sequence may be a sequence generated from the ZC sequence.
  • the base sequence may be the ZC sequence itself, or the base sequence may also be a sequence generated by the ZC sequence through cyclic shift expansion or interception.
  • a ZC sequence of length N is z q (n), which can be expressed in the following form:
  • N is an integer greater than 1
  • q is the root of the ZC sequence (also called root index or root index), a natural number that is relatively prime to N, and 0 ⁇ q ⁇ N.
  • the reference sequence generated from the base sequence is q
  • ⁇ is a value determined according to the time domain cyclic shift, which is also called the cyclic shift value.
  • the terminal device can map the reference signal sequence of length M to M subcarriers in the order of subcarrier index from small to large (or from large to small), and then perform inverse Fourier on the frequency domain sequence Leaf transform (inverse fourier transform, IDFT) to obtain the corresponding time-domain sequence and send it to the network device.
  • inverse Fourier transform inverse fourier transform, IDFT
  • the uplink reference signal is the reference signal sent by the terminal equipment, for example, SRS, DMRS of the uplink control channel, discrete Fourier transform extended orthogonal frequency division multiplexing (discrete fourier transform-spread orthogonal frequency division multiplexing, DFT-s) -OFDM) DMRS of physical uplink shared channel (PUSCH) under waveform.
  • the uplink reference signal can be used to obtain uplink channel state information, which can be used for demodulation and detection of uplink data.
  • uplink reference signals can also be used to obtain downlink channel state information.
  • the network device obtains downlink channel state information by measuring the SRS sequence sent by the terminal device.
  • the channel state information is used for precoding during downlink data transmission, determination of modulation and coding methods, and so on. Therefore, obtaining accurate channel state information based on the uplink reference signal is very important for the efficiency of uplink data transmission or downlink data transmission.
  • SRS uses a sequence generated from a ZC sequence.
  • the roots of the ZC sequences used by all terminal devices in a cell are the same, and the orthogonality of the SRS sequences of different terminal devices can be obtained through different cyclic shifts and frequency domain resources.
  • 3rd generation partnership project 3rd generation partnership project
  • 3GPP 3rd generation partnership project
  • 60 base sequences are defined respectively.
  • the 60 base sequences are generated from ZC sequences with the same length and different roots. Further, the 60 base sequences are divided into 30 sequence groups, and the base sequences of different sequence groups can be allocated to different cells.
  • the formula for determining root q currently defined by 3GPP is:
  • v 0 or 1
  • u 0,1,...,29.
  • u is the group serial number, representing 30 groups, and each group has two root serial numbers, which are determined by v. u and v are configured for terminal equipment by sending configuration information through network equipment.
  • the relationship between the root q of these 60 ZC sequences and the group number u of the base sequence can be shown in Table 1 below Show:
  • each terminal device that sends the same length of SRS sequence on the same time-frequency resource uses the same u and v, that is, the same cell sends the same length of SRS sequence on the same time-frequency resource
  • Each terminal device in the group uses the SRS sequence generated by the same base sequence in the group.
  • these terminal devices obtain the orthogonality between the SRS sequences by using different time-domain cyclic shifts.
  • two base sequences with the same length in the same group are used as hopping sequences, that is, at different moments, the base sequence used by a terminal device can be designed between the two base sequences in this group.
  • the pattern of hops, and the two base sequences in the group are used in turn, the purpose of which is to randomize inter-cell interference.
  • sequence hopping process at the same moment, all terminal devices in a cell that send the same length SRS sequence on the same time-frequency resource still use the same base sequence to generate the SRS sequence. Therefore, in the current system, there is only one available root for the SRS sequence of a cell on the same time-frequency resource.
  • the number of terminal devices in each cell is large (for example, 200), and the number of time-domain cyclic shifts that can obtain good orthogonality in the actual system and the number of available time-frequency domain resources are very limited. . Therefore, the current number of available SRS sequences in a cell is far from sufficient for the huge number of terminal devices. This leads to the need to allow different terminal devices to send SRS in turn in a time division manner, resulting in a larger SRS cycle (for example, 20 ms).
  • the channel has time-varying characteristics, and the large SRS period causes the channel state information obtained through SRS to be easily outdated. The channel state information during downlink data transmission is very different from the channel state information measured by the previous SRS, which seriously affects the system Performance.
  • an embodiment of the present application proposes a method for increasing the number X of base sequences with the same length in the sequence group.
  • the X base sequences with the same length are determined by the ZC sequences with different roots, X>1.
  • the X base sequences in the sequence group can be allocated to different terminal devices in a cell for determining reference signals.
  • the embodiments of the present application are beneficial to solve the problem of large interference between reference signal sequences determined by different base sequences when these different terminal devices transmit reference signals determined by the base sequences allocated to them on the same time-frequency resource. problem.
  • the method in the embodiments of the present application can be applied not only to uplink reference signal sequences, but also to downlink reference signal sequences.
  • V2X vehicle to everything
  • LTE-V long term evolution-vehicle
  • vehicle-to-vehicle vehicle-to-vehicle
  • -to-vehicle, V2V machine type communication
  • IoT internet of things
  • LTE-M long term evolution-metro
  • machine-to-machine machine-to-machine to machine, M2M etc.
  • FIG. 2 shows a schematic flowchart of a communication method 200 according to an embodiment of the present application.
  • the method 200 can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present application is not limited thereto.
  • the terminal device obtains a reference signal sequence with a length of M, where M is an integer greater than 1.
  • the terminal device sends the reference signal sequence to the network device; correspondingly, the network device receives the reference signal sequence.
  • the foregoing method 200 further includes:
  • S230 The network device performs channel measurement according to the received reference signal sequence.
  • the terminal device sends a reference signal sequence x(m) of length M, and the network device receives a signal y(m) containing the reference signal sequence x(m),
  • h(m) is channel information and n(m) is noise.
  • the network device can generate the reference signal sequence x(m) locally, and then obtain the estimated value of the channel information h(m) through the following operations
  • x * (m) is the conjugate of x (m). estimated value It is the channel measurement value of the above-mentioned network equipment.
  • the aforementioned reference signal sequence is determined by the first base sequence of length M.
  • the first base sequence belongs to the first sequence group, and the number of base sequences of length M in the first sequence group is X.
  • the X base sequences have the same group index, and the X base sequences are determined by X ZC sequences of length N, where N is an integer greater than 1, and X is an integer greater than or equal to 2.
  • the roots of the ZC sequence corresponding to any two of the X base sequences are q 1 and (q 1 +V 1 ) mod N respectively.
  • q 1 is an integer from 1 to N-1
  • V 1 is an integer
  • the range of the absolute value of V 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • K 1 , K 2 , K 3 and K 4 are both integers, K 1 >1, K 4 ⁇ N-1.
  • N odd
  • N even
  • [A,B] represents a set of integers greater than or equal to A and less than or equal to B
  • a mod B represents A modulo B
  • the result is greater than or equal to zero and less than B Integer
  • ⁇ represents the union.
  • first sequence group may include base sequences of different lengths.
  • the number of base sequences of length M is X.
  • the first sequence group may also include X 1 base sequences with a length of M 1 and X 2 base sequences with a length of M 2.
  • M, M 1 , and M 2 are not equal, and X, X 1 , X 2 can be equal or not equal.
  • the number of base sequences with a part length equal to 1, and the number of base sequences with another part length greater than 1.
  • the number of base sequences with a length of M 3 Is X 3 and the number of base sequences with length M 4 is X 4 , where X 3 is equal to 1, and X 4 is greater than 1.
  • the number of base sequences of each length is greater than 1, which is not limited in the embodiment of the present application.
  • the foregoing first sequence group may be allocated by the network device to the terminal device through terminal device specific signaling (such as dedicated (dedicated) radio resource control (Radio Resource Control, RRC) signaling), or it may be Network equipment uses cell-level signaling (such as cell-specific RRC signaling, system information block (SIB) signaling, master information block (MIB) signaling, etc.)
  • the base sequence of a sequence group is allocated to a plurality of terminal devices served by the network device, thereby being allocated to the terminal device.
  • the embodiment of the present application is not limited to this, and will not be repeated here.
  • the purpose of allocating the above-mentioned first sequence group to the terminal device is to allocate a group of base sequences to the terminal device, and the group of base sequences represents the potential base sequence used by the terminal device to determine the reference signal sequence.
  • the terminal device may further use other configuration information to determine which base sequence in the first sequence group the reference signal sequence sent at a certain moment is determined based on.
  • the terminal device acquiring the reference signal sequence of length M may be the terminal device generating the reference signal sequence according to the first base sequence and a predefined rule, or the terminal device may obtain the pre-generated reference signal sequence by looking up the table.
  • the application embodiment does not limit this.
  • the above-mentioned reference signal sequence is determined by the first base sequence of length M. It can be understood that the reference signal sequence may be generated from the first base sequence, or the reference signal sequence may be obtained by looking up the table according to the first base sequence of. In the same way, the above-mentioned first base sequence is determined by a ZC sequence of length N. It can be understood that the first base sequence may be generated from the ZC sequence, or the first base sequence may be a table lookup based on the ZC sequence. owned. The embodiments of this application do not limit this
  • the first base sequence is generated from the ZC sequence
  • the reference signal sequence is generated from the first base sequence
  • the terminal device may generate the reference signal sequence to be sent according to the base sequence (the first base sequence in this embodiment) among the aforementioned X base sequences according to predefined rules and/or other signaling configuration.
  • the terminal device can obtain the group index or the cell index, the sequence index of the first base sequence, or the index of the root of the ZC sequence generating the first base sequence, and the ZC generating the first base sequence can be obtained through the following predefined formula
  • u is determined according to the group index or cell index
  • v is determined according to the index of the root.
  • N is the length of the ZC sequence generating the first base sequence
  • the terminal device can use the root q 1 and the following formula to generate the first base sequence r(m) of length M:
  • the terminal equipment uses the first base sequence r(m) and ⁇ to obtain the reference signal sequence x(m):
  • A is a complex number
  • j is an imaginary unit
  • exp represents an exponential function with e as the base
  • ⁇ is a real number determined according to the cyclic shift value
  • the cyclic shift value can be determined by the terminal device according to the configuration information of the network device, or Determined according to predefined rules.
  • the first sequence group allocated to the terminal device does not require the terminal device to store all X base sequences of the first sequence group according to the result of the allocation, but the terminal The device can generate the reference signal sequence to be sent according to the first base sequence among the X base sequences when needed according to predefined rules and/or other signaling configuration.
  • the first base sequence is obtained by looking up the table, and the reference signal sequence is generated from the first base sequence.
  • the terminal device can directly store all the base sequences in the first sequence group generated in advance, and the correspondence between the base sequences and the respective ZC sequences (or roots of the ZC sequences). After the terminal device has determined the M and ZC sequence (or the root of the ZC sequence), it can directly determine the first base sequence by looking up the table. Further, the terminal device can generate the reference signal sequence through the first base sequence according to the above formula, which will not be repeated here.
  • the reference signal sequence is obtained by looking up the table.
  • the terminal device can directly store multiple pre-generated reference signal sequences, and the correspondence between the reference signal sequence and the respective base sequence (or the ZC sequence corresponding to the base sequence, or the root of the ZC sequence corresponding to the base sequence), ⁇ relationship. After determining ⁇ and the first base sequence (or the ZC sequence corresponding to the first base sequence, or the root of the ZC sequence corresponding to the first base sequence), the terminal device can directly determine the reference signal sequence by looking up the table.
  • the roots of the ZC sequence corresponding to any two of the X base sequences are q 1 and (q 1 +V 1 ) mod N, which means that in the above X base sequences
  • two base sequences are arbitrarily selected, for example, the first base sequence and the second base sequence
  • q 1 represents the root of the first ZC sequence generating the first base sequence
  • (q 1 +V 1 ) mod N represents the second base sequence
  • the root of the second ZC sequence of the sequence using the above method to represent the roots of any two base sequences of ZC sequences, the absolute value of V 1 ranges from [K 1 ,K 2 ] ⁇ [K 3 , K 4 ]. It should be noted that the first base sequence and the second base sequence do not specify the sequence of the sequence.
  • the ZC sequence corresponding to a base sequence refers to the ZC sequence that generates the base sequence.
  • the first base sequence corresponding to the first ZC sequence refers to the first ZC that generates the first base sequence. sequence.
  • the "correspondence" in this article refers to the relationship in which the ZC sequence generates the base sequence.
  • a base sequence is generated from a ZC sequence. That is, the above-mentioned X base sequences are generated from X length N ZC sequences, which means that the X base sequences are respectively generated from respective corresponding ZC sequences, and their respective corresponding ZC sequences are not the same. In other words, different base sequences are generated from ZC sequences with different roots.
  • the value range of the absolute value of V 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 >1, K 4 ⁇ N-1, when N is an odd number, When N is even, Not only can the interference power between the reference signal sequences generated based on any two base sequences in the same sequence group and any cyclic shift value be sufficiently low, for example, the sequence generated by the base sequences r 1 (m) and ⁇ 1 And the sequence generated by the base sequence r 2 (m) and ⁇ 2 The interference power is low enough, and it can make multiple reference signal sequences generated by the same base sequence and multiple cyclic shift values to generate the reference signal sequence generated by another base sequence and any cyclic shift value.
  • the total interference power is sufficiently low, for example, f reference signal sequences generated from the base sequence r 1 (m) and f different cyclic shift values ⁇ 1 , ⁇ 2 ,..., ⁇ f
  • the total interference power generated is small enough, where f is a positive integer greater than or equal to 1.
  • the total interference here refers to the expected value or variance value or instantaneous value of the total interference power, which is not limited. In this way, different terminal devices in the same cell can use different base sequences in the sequence group corresponding to the cell to generate their respective reference signal sequences, and can send them on the same time-frequency resource.
  • a sequence group includes at least two base sequences of the same length
  • different terminal devices in the same cell can use at least two base sequences of the same length in the sequence group.
  • the sequence determines the reference signal sequence, and transmits the reference signal on the same time-frequency resource, so that the number of terminal devices that can transmit reference signals of the same length at the same frequency increases, and the number of reference signal sequences can be increased while ensuring the reference
  • the interference power between signal sequences is very low, which is beneficial to improve the accuracy of channel measurement by network equipment based on the reference signal.
  • N is an odd number
  • the absolute value range of V 1 in the embodiment of the present application does not include 1, And N-1. If N is an odd number, then the roots of the ZC sequences corresponding to the two base sequences in the first sequence group are q 1 and (q 1 is an integer from 1 to N-1), the interference power between the two reference signal sequences generated by the two base sequences is very large. If the terminal device sends the reference signal sequence generated based on the above two base sequences on the same time-frequency resource, it will cause greater inter-sequence interference, which will cause serious distortion of the channel measurement result of the network device.
  • the roots of the ZC sequences corresponding to the two base sequences in the first sequence group are q 1 and (q 1 is an integer from 1 to N-1), the interference power between the two reference signal sequences generated by the two base sequences is also very large, and will not be repeated here.
  • the value range of the absolute value of V 1 in the embodiment of the present application does not include 1, N-1. If If N is an even number, the roots of the ZC sequences corresponding to two base sequences in the first sequence group are q 1 and (q 1 is an integer from 1 to N-1), the interference power between the two reference signal sequences generated by the two base sequences is also very large, and will not be repeated here.
  • the first sequence group may be determined from Y sequence groups.
  • the Y sequence groups have different sequence group indexes or cell indexes.
  • the terminal device determines the first sequence group according to the group index or cell index indicated by the configuration information by receiving the configuration information, and then can determine a group of base sequences allocated to itself, and the group of base sequences may include base sequences of multiple lengths, Among them, the number of base sequences of length M is X.
  • the method 200 further includes:
  • the network device sends configuration information to the terminal device, where the configuration information is used to configure the first sequence group.
  • the terminal device receives the configuration information, determines the first base sequence according to the configuration information, and determines the reference signal sequence according to the first base sequence.
  • the embodiment of the present application defines the second sequence group as a set of all base sequences having the same group index (or cell index). Therefore, the above-mentioned first sequence group is a set of all or part of the base sequences in the second sequence group.
  • the first sequence group is the set of all base sequences in the second sequence group.
  • the first sequence group is the second sequence group.
  • the configuration information may include first indication information and second indication information, where the first indication information is used to indicate the first sequence group; the second indication information is used to indicate the first sequence group in the first sequence group.
  • Base sequence. The terminal device may receive the first indication information and the second indication information, and obtain a reference signal sequence of length M according to the first indication information and the second indication information.
  • first instruction information and the second instruction information may be sent through the same instruction or through different instructions, which is not limited in the embodiment of the present application.
  • first indication information and/or the second indication information may be display configuration, for example, the first indication information indicates the group index of the first sequence group, and the second indication information indicates the base sequence index in the first sequence group; or The first indication information and/or the second indication information may also be implicitly obtained through the configuration of other information, which is not limited in the embodiment of the present application.
  • the first sequence group is a collection of partial base sequences in the second sequence group.
  • the foregoing configuration information may include first indication information, second indication information, and third indication information.
  • the terminal device may obtain a reference signal sequence of length M according to the first indication information, the second indication information, and the third indication information.
  • the terminal device can determine the final reference signal sequence according to the above three indication information in various ways. For example, the terminal device may determine the first sequence group through the first indication information and the third indication information, and then determine the first base sequence based on the above-mentioned first sequence group through the second indication information, thereby determining the reference according to the first base sequence Signal sequence.
  • the terminal device may determine the potential multiple base sequences in the second sequence group through the first indication information and the second indication information, and then determine based on the first base sequence among the multiple base sequences through the third indication information, thereby The reference signal sequence is determined according to the first base sequence.
  • the terminal device may also determine the first base sequence in other ways, which is not limited in this embodiment of the application.
  • the terminal device may obtain the sequence group index or the cell index of the second sequence group according to the first indication information.
  • the second sequence group includes a sub-sequence group g 0 and a sub-sequence group g 1 , as shown in FIG. 3,
  • the roots of the ZC sequence corresponding to the base sequence of length M in the subsequence group g 0 are 0 , 0+V 1 , 0+2 ⁇ V 1
  • the subsequence group The roots of the ZC sequence corresponding to the base sequence of length M in g 1 are 1 , 1+V 1 , and 1+2 ⁇ V 1 respectively .
  • the third indication information is hopping sequence group indication information, and the terminal device may determine the first sequence group according to the third indication information.
  • the hopping sequence group indication information indicates that it is off, the first sequence group is the subsequence group g 0 ; when the hopping sequence group indication information indicates that it is on, the first sequence group is the subsequence group g n , where n belongs to the set ⁇ 0,1 ⁇ , and the value of n will change according to the time unit of the hopping sequence pattern (such as sub-frames, symbols, etc.), that is, at different moments, the first sequence group indicated by the third indication information is in the sub-sequence group g
  • the hopping between 0 and the sub-sequence group g 1 is performed according to the designed pattern, and the purpose is to randomize the interference between cells.
  • the first sequence group is the sub-sequence group g 0
  • the interference of this cell to other cells is the interference caused by the reference signal generated by the base sequence in the sub-sequence group g 0 to the signals of other cells.
  • the first sequence group is the sub-sequence group g 1
  • the interference of this cell to other cells is the interference caused by the reference signal generated by the base sequence in the sub-sequence group g 1 to the signals of other cells. Therefore, hopping
  • the sequence group method can randomize the interference caused by the reference signal of the cell to the signals of other cells.
  • the terminal equipment in the same cell that transmits the reference signal sequence of the same length on the same time-frequency resource still uses the reference signal sequence generated by the base sequence in the same subsequence group.
  • the terminal device may obtain a base sequence in the sub-sequence group by receiving the second indication information.
  • the second sequence group in this embodiment may or may not carry the index of the subsequence group.
  • the terminal device may obtain the sequence group index or the cell index of the second sequence group according to the first indication information, assuming that the second sequence group includes a sub-sequence group g 2 and a sub-sequence group g 3 .
  • the sub-sequence group g 2 is composed of base sequences that are already supported by the current standard (legacy).
  • M is greater than or equal to 60
  • the number of base sequences of length M is two, and these two base sequences are used for hopping sequences.
  • G 3 group sequence length M is the number of the base sequence of the X. As shown in FIG.
  • the roots of the ZC sequence corresponding to the base sequence of length M in the subsequence group g 2 are 0 and 1, respectively, and in the sub sequence group g 3
  • the roots of the ZC sequence corresponding to the base sequence of length M are 0, 0+V 1 , and 0+2 ⁇ V 1 respectively .
  • the third indication information is used to indicate which subsequence group to use, that is, the terminal device can determine the first sequence group according to the third indication information. For example, for terminal devices that cannot support the embodiments of the present application, such as release 15 (R15) and/or R16 terminal devices, the third indication information may indicate that such terminal devices adopt the sub-sequence group g 2 .
  • the third indication information may indicate that this type of terminal your device uses the sub-sequence group g 3 .
  • the foregoing two types of terminal devices can transmit reference signal sequences determined by the base sequences in the respective sequence groups on different time-frequency resources, without causing interference between each other.
  • Multiple terminal devices that can support the embodiments of the present application can transmit reference signal sequences determined by different base sequences in the first sequence group on the same time-frequency resource, and the interference between each other is relatively small. Therefore, the application embodiment can support more terminal devices to send reference signals at the same frequency at the same time, and ensure that the reference signal interference between the terminal devices is small enough to ensure the channel measurement accuracy of this type of terminal device by the network device.
  • the foregoing third indication information may use a separate field to display the configuration as a part of the reference signal resource configuration information; or, the third indication information may be bound to other information and be indicated in an implicit manner.
  • the base sequences included in the sub-sequence group g 0 and the sub-sequence group g 1 may be completely different or partly the same.
  • the base sequences included in the sub-sequence group g 2 and the sub-sequence group g 3 may be completely different or partly the same.
  • first instruction information, the second instruction information, and the third instruction information may be sent through the same instruction or through different instructions, which is not limited in the embodiment of the present application.
  • the terminal device can substitute the parameters configured in the configuration information (for example, group index or cell index, hopping sequence group indicator parameters, etc.) into the reference signal sequence generation formula to obtain the assigned A set of base sequences, or the reference signal sequence can be obtained.
  • the parameters configured in the configuration information for example, group index or cell index, hopping sequence group indicator parameters, etc.
  • the terminal device may obtain the root q of the ZC sequence corresponding to the first base sequence of the reference signal sequence through the following predefined formula:
  • u is determined according to the first indication information
  • f s is determined according to the third indication information
  • v is determined according to the second indication information
  • N is the length of the ZC sequence that generates the first base sequence
  • the terminal device can use the root q and the following formula to generate the first base sequence r(m) of length M:
  • the terminal equipment uses the first base sequence r(m) and ⁇ to obtain the reference signal sequence x(m):
  • the terminal device can obtain a set of base sequences allocated to itself according to the predefined table and the above configuration information.
  • a predefined table defines one or more base sequences included in each sequence group, and the terminal device can learn the X base sequences through configuration information.
  • a predefined table defines the roots of the ZC sequence that generates one or more base sequences of the sequence group included in each sequence group, and the terminal device can learn the ZC sequence that generates the X base sequences through configuration information The root.
  • the i-th base sequence r i (m) in the X base sequences of the above-mentioned first sequence group is a ZC sequence whose length is N and the root index is q i
  • the specific generating formula is:
  • the first sequence group belongs to Y sequence groups, and Y is an integer greater than or equal to 2; the y-th sequence group in the Y sequence groups has a base sequence of length M
  • the number is X (y) , the X (y) base sequences of length M are determined by the ZC sequence of length N, X (y) is an integer greater than or equal to 2, the X (y)
  • the roots of the ZC sequence corresponding to any two base sequences in a base sequence of length M are q′ and (q′+V′) mod N respectively, q′ is an integer from 1 to N-1, and V′ is an integer, And the value range of the absolute value of V'is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • each sequence group in the Y sequence groups includes at least two base sequences with a length of M, so that each cell corresponding to the Y sequence groups can simultaneously send terminals with the same length of reference signals
  • the number of devices is at least doubled. While increasing the number of reference signal sequences, it can ensure that the interference power between the reference signal sequences generated by any two base sequences of the same length in the same sequence group is very low. , The interference between reference signal sequences is much lower than that of the signal, which facilitates flexible network planning and improves the accuracy of channel measurement of network equipment based on reference signal sequences.
  • the absolute value of V 1 belongs to the set
  • the absolute value of V 1 belongs to the set Represents the smallest integer greater than or equal to A.
  • the absolute value of V′ belongs to the set
  • the absolute value of V'belongs to the set Represents the smallest integer greater than or equal to A.
  • the first threshold and the second threshold may be the same or different, which is not limited in the embodiment of the present application. It should be understood that the foregoing first threshold may be determined by a network device, and the terminal device does not need to know the first threshold. In other words, the network device may determine the first threshold, and determine one or more values of the absolute value of V 1 and/or the absolute value of V′ according to the first threshold and N, and the network device may determine the absolute value of V 1 One or more values of the absolute value of V and/or the absolute value of V'are assigned to the terminal device, and the terminal device can be directly based on one or more of the absolute value of V 1 and/or the absolute value of V'sent by the network device. Take a value, determine the base sequence, and then determine the reference signal sequence and send it. The second threshold is the same and will not be repeated here.
  • the value of the first threshold and/or the second threshold may be any one of B 1 , B 2 or B 3 , where the relationship between B 1 , B 2 or B 3 and ⁇ satisfies the following table 2 At least one line in.
  • the absolute value of V 1 and/or the range of the absolute value of V' can be optimized for different ⁇ and different channel coherence bandwidths, so that under the frequency domain flatness of different channels, when there are ⁇
  • the terminal device determines the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, the interference power of these reference signal sequences to the reference signal sequence determined based on another base sequence of the sequence group is very low .
  • the embodiment of the present application does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • the coherence bandwidth corresponding to B 1 , B 2 or B 3 is sequentially increased.
  • the network device may determine to use the above B 1 , B 2 or B 3 according to the coherent bandwidth.
  • the coherence bandwidth is about 3-5 resource blocks (resource block, RB), 6RB, 8RB or 10RB, the first threshold and/or the second threshold belong to B 1 ; if the coherence bandwidth is about 6RB Or 12RB, the first threshold and/or the second threshold belong to B 2 ; if the coherence bandwidth is about 12 RB or 24 RB, the first threshold and/or the second threshold belong to B 3 .
  • the network device may further combine the comb teeth and the coherent bandwidth to determine to use the foregoing B 1 , B 2 or B 3 .
  • the first threshold and/or the second threshold belong to B 1 ; if The coherence bandwidth is about 6RB, and the first threshold and/or the second threshold belong to B 2 ; if the coherence bandwidth is about 12 RB, the first threshold and/or the second threshold belong to B 3 .
  • the first threshold and/or the second threshold belong to B 1 ; if the coherence bandwidth is about If it is 12RB, the first threshold and/or the second threshold belong to B 2 ; if the coherence bandwidth is about 24 RB, the first threshold and/or the second threshold belong to B 3 .
  • the set A ⁇ , ⁇ represents the set corresponding to the column ⁇ and the row ⁇ .
  • the absolute value range of V 1 can be optimized for different ⁇ and different channel coherence bandwidths, so that under the flatness of the frequency domain of different channels, when there are ⁇ terminal devices based on a sequence group
  • the interference power of these reference signal sequences to the reference signal sequence determined based on the other base sequence of the sequence group is very low.
  • the embodiment of the present application does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • the coherence bandwidths corresponding to A 1, ⁇ to A 4, ⁇ increase sequentially.
  • the network device can determine which set to use according to the coherent bandwidth.
  • the coherence bandwidth is about 3RB or 6RB, the absolute value of V 1 belongs to A 1, ⁇ ; if the coherence bandwidth is about 4RB or 8RB, the absolute value of V 1 belongs to A 2, ⁇ ;
  • the bandwidth is about 5RB or 10RB, and the absolute value of V 1 belongs to A 3, ⁇ ; if the coherence bandwidth is about 6RB or 12RB, the absolute value of V 1 belongs to A 4, ⁇ .
  • the network device may further combine comb teeth and coherent bandwidth to determine which set to use.
  • the absolute value of V 1 belongs to A 1, ⁇ ; if the coherence bandwidth is about The absolute value of 4RB, V 1 belongs to A 2, ⁇ ; if the coherence bandwidth is about 5RB, the absolute value of V 1 belongs to A 3, ⁇ ; if the coherence bandwidth is about 6RB, the absolute value of V 1 belongs to A 4, ⁇ .
  • a 1, ⁇ to A 4, ⁇ can also correspond to other coherence bandwidths and/or other comb teeth, which will not be repeated here.
  • the value range of the absolute value of V 1 may be determined for at least one value of ⁇ and/or at least one value of ⁇ .
  • the absolute value of V 1 The value of can adopt any of the following schemes:
  • This scheme is suitable for optimizing only for a certain coherent bandwidth.
  • the inter-sequence interference power of the two reference signal sequences determined by the root q 1 and the root (q 1 +V 1 ) mod N is very low when the coherence bandwidth is 3RB and 4RB (or 6RB and 8RB).
  • the root q i of the ZC sequence of the i-th base sequence in the above X base sequences satisfies at least one of the following formulas:
  • u is an integer determined according to the group index or cell index of the first sequence group or the second sequence group.
  • c i is an integer determined according to V 1.
  • V 1 The characteristics of V 1 are:
  • V 1 is an integer
  • V 1 For different u, the value of V 1 can be the same or different
  • V 1 can be the same or different
  • V 1 belongs to [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • N is an odd number, K 1 >1, K 4 ⁇ N-1; when N is an even number, K 1 >1, K 4 ⁇ N-1.
  • the number of base sequences of length M in the first sequence group is greater than or equal to 2.
  • X 2 as an example for description.
  • the two base sequences of length M in the first sequence group be the first base sequence and the second base sequence, respectively, and the root of the first ZC sequence used to generate the first base sequence is q 1 , which is used to generate the first base sequence.
  • the value of can be divided into the following situations.
  • V 1 It may belong to the set A 1 shown in Table 4 below, and the corresponding relationship between A 1 and N satisfies at least one row in Table 4.
  • at least one of formulas (1) to (4) can be used to determine the root q 1 of the first ZC sequence and the root q 2 of the second ZC sequence.
  • the design according to the above table To determine q 1 and q 2 , under the frequency domain flatness of different channels, when ⁇ terminal devices determine the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, The sum of the interference power of these reference signal sequences to the reference signal determined based on another base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • the absolute value of V 1 It may belong to the set A 2 shown in Table 5 below, and the corresponding relationship between A 2 and N satisfies at least one row in Table 5.
  • the root q 1 of the first ZC sequence and the root q 2 of the second ZC sequence may be determined according to formula (1).
  • the design according to the above table To determine q 1 and q 2 , under the frequency domain flatness of different channels, when ⁇ terminal devices determine the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, The sum of the interference power of these reference signal sequences to the reference signal determined based on another base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • the absolute value of V 1 It can belong to the set A 3 shown in the following table, and the corresponding relationship between A 3 and N satisfies at least one row in Table 6.
  • the root q 1 of the first ZC sequence and the root q 2 of the second ZC sequence may be determined according to formula (3).
  • the design according to the above table To determine q 1 and q 2 , under the frequency domain flatness of different channels, when ⁇ terminal devices determine the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, The sum of the interference power of these reference signal sequences to the reference signal determined based on another base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • V 1 It can belong to the set A 4 shown in Table 7 below, and the corresponding relationship between A 4 and N satisfies at least one row in Table 7.
  • at least one of formulas (1) to (4) can be used to determine the root q 1 of the first ZC sequence and the root q 2 of the second ZC sequence.
  • the design according to the above table To determine q 1 and q 2 , under the frequency domain flatness of different channels, when ⁇ terminal devices determine the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, The sum of the interference power of these reference signal sequences to the reference signal determined based on another base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • V 1 It may belong to the set A 5 shown in Table 8 below, and the corresponding relationship between A 5 and N satisfies at least one row in Table 8.
  • formula (3) may be used to determine the root q 1 of the first ZC sequence and the root q 2 of the second ZC sequence.
  • the design according to the above table To determine q 1 and q 2 , under the frequency domain flatness of different channels, when ⁇ terminal devices determine the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, The sum of the interference power of these reference signal sequences to the reference signal determined based on another base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • V 1 It can be equal to A 6 or A 7 , and the corresponding relationship between A 6 or A 7 and N satisfies at least one row in Table 9.
  • formula (3) may be used to determine the root q 1 of the first ZC sequence and the root q 2 of the second ZC sequence.
  • the design according to the above table To determine q 1 and q 2 , under the frequency domain flatness of different channels, when ⁇ terminal devices determine the reference signal sequence based on the same base sequence of a sequence group and ⁇ different cyclic shift values, The sum of the interference power of these reference signal sequences to the reference signal determined based on another base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ;
  • the coherence bandwidth is 8RB, 10RB, 12RB or 24RB.
  • Belongs to A 7 for other scenarios, Belongs to A 7 ; for other scenarios, It can belong to A 6 or A 7 .
  • a 6 and A 7 can also correspond to other coherence bandwidths and other ⁇ values, which will not be repeated here.
  • X is an integer greater than or equal to 3
  • the X base sequences include three base sequences, and the roots of the ZC sequences corresponding to the three base sequences are q 2 , (q 2 +V 2 )mod N and (q 2 +W 1 )mod N, where q 2 is an integer from 1 to N-1, V 2 is an integer, and the absolute value of V 2 ranges from [K 1 , K 2 ] ⁇ [K 3 ,K 4 ], W 1 is an integer, and the range of the absolute value of W 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the three base sequences in this embodiment may include at least one of the two base sequences in the foregoing embodiment, or may be other sequences different from the foregoing two base sequences, that is, q 2 and q 1 may be equal , It may not be equal, V 2 and V 1 may be equal or not, which is not limited in the embodiment of the present application.
  • c i is an integer determined according to V 2 .
  • W 1 may be determined according to V 2
  • V 2 may be determined according to W 1
  • V 2 and W 1 may be independently designed values, and there is no clear and direct relationship between each other.
  • This application The embodiment also does not limit this.
  • V 2 The characteristics of V 2 are:
  • V 2 is an integer
  • V 2 can be the same or different
  • V 2 belongs to [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • W 1 The characteristics of W 1 are:
  • W 1 is an integer
  • the value of W 1 can be the same or different
  • the number of base sequences with a length of M in the first sequence group is greater than or equal to 3.
  • X is an integer greater than or equal to 3
  • the root of the first ZC sequence of the sequence is q 1
  • the root of the second ZC sequence used to generate the second base sequence is q 2
  • the root of the third ZC sequence used to generate the third base sequence is q 3
  • the absolute values of V 2 and W 1 can be divided into the following situations.
  • N and V 2 It may belong to the set A 8 or A 9 shown in Table 10 below, and the correspondence between the set A 8 or A 9 and N satisfies at least one row in Table 10.
  • a 50 The union of the above set A 8 and the set A 9 can be referred to as A 50 .
  • the design according to the above table To determine q 1 , q 2 and q 3 , it is possible to determine the reference signal based on the same base sequence of a sequence group and ⁇ different cyclic shift values under the frequency domain flatness of different channels when there are ⁇ terminal devices During the sequence, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB.
  • a 8 and A 9 can also correspond to other ⁇ values, which will not be repeated here.
  • N and V 2 It may belong to the set A 10 or A 11 shown in Table 11 below, and the correspondence between the set A 10 or A 11 and N satisfies at least one row in Table 11.
  • the design according to the above table To determine q 1 , q 2 and q 3 , it is possible to determine the reference signal based on the same base sequence of a sequence group and ⁇ different cyclic shift values under the frequency domain flatness of different channels when there are ⁇ terminal devices During the sequence, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB.
  • a 10 and A 11 can also correspond to other ⁇ values, which will not be repeated here.
  • N and V 2 It may belong to the set A 12 or A 13 shown in Table 12 below, and the correspondence between the set A 12 or A 13 and N satisfies at least one row in Table 12.
  • the design according to the above table To determine q 1 , q 2 and q 3 , it is possible to determine the reference signal based on the same base sequence of a sequence group and ⁇ different cyclic shift values under the frequency domain flatness of different channels when there are ⁇ terminal devices During the sequence, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherent bandwidth is 3RB; or, the comb tooth is At 4, the coherent bandwidth is 6RB).
  • ⁇ values for example, 1, 2, 4, 8
  • different channel coherence bandwidths for example, when the comb tooth is 2, the coherent bandwidth is 3RB; or, the comb tooth is At 4, the coherent bandwidth is 6RB.
  • N and V 2 It can be A 14 or A 15 , and the corresponding relationship between A 14 or A 15 and N satisfies at least one row in Table 13.
  • the design according to the above table To determine q 1 , q 2 and q 3 , it is possible to determine the reference signal based on the same base sequence of a sequence group and ⁇ different cyclic shift values under the frequency domain flatness of different channels when there are ⁇ terminal devices During the sequence, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low. At the same time, this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB ; Or, when the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB.
  • a 10 and A 11 can also correspond to other ⁇ values, which will not be repeated here.
  • X is an integer greater than or equal to 4
  • the X base sequences include four base sequences, and the roots of the ZC sequences corresponding to the four base sequences are q 3 , (q 3 + V 3 )mod N, (q 3 +W 2 )mod N, and (q 3 +O 1 )mod N, where q 3 is an integer from 1 to N-1, V 3 is an integer, and the absolute value of V 3
  • the value range of is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • W 2 is an integer
  • the absolute value of W 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ]
  • O 1 is an integer
  • the range of the absolute value of O 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the four base sequences in this embodiment may include at least one of the base sequences mentioned in the above-mentioned embodiments, or may be other sequences different from the above-mentioned base sequences, that is, q3 and q1 or q2 may be equal, It may also be unequal. V 3 and V 1 or V 2 may be equal or unequal. W 2 and W 1 may be equal or unequal, which is not limited in the embodiment of the present application.
  • c i is an integer determined according to V 3 .
  • W 2 may be determined based on V 3
  • V 3 may be determined based on W 2
  • V 3 and W 2 may be independently designed values, and there is no clear and direct relationship between each other.
  • O 1 can be determined based on V 3
  • V 3 can be determined based on O 1
  • V 3 and O 1 can be independently designed values, and there is no clear and direct relationship between them.
  • V 3 The characteristics of V 3 are:
  • V 3 is an integer
  • V 3 can be the same or different
  • V 3 belongs to [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • W 2 is an integer
  • the value of W 2 can be the same or different
  • O 1 is characterized by:
  • O 1 is an integer
  • the value of O 1 can be the same or different
  • the number of base sequences with a length of M in the first sequence group is greater than or equal to 4.
  • the root of the first ZC sequence used to generate the first base sequence is q 1
  • the root of the second ZC sequence used to generate the second base sequence is q 2
  • the root of the third ZC sequence used to generate the third base sequence
  • the root is q 3
  • N and V 3 It may belong to the set A 16 , A 17 or A 18 shown in Table 14 below, and the correspondence between the set A 16 , A 17 or A 18 and N satisfies at least one row in Table 14.
  • at least one formula in formulas (1) to (4) can be used to determine the root q 1 of the first ZC sequence, the root q 2 of the second ZC sequence, and the root q 2 of the third ZC sequence.
  • the design according to the above table To determine q 1 , q 2 , q 3 and q 4 , it can make the frequency domain flatness of different channels, when there are ⁇ terminal devices based on the same base sequence of a sequence group and ⁇ different cyclic shift values
  • the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low.
  • this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 8RB, 10RB, 12RB or 24RB (comb is 4), Belongs to A 16 ;
  • the coherence bandwidth is 3RB (comb is 2), or the coherence bandwidth is 6RB (comb is 4), Belongs to A 17 ;
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 8RB, 10RB, 12RB or 24RB (comb is 4), Belongs to A 18 .
  • a 16 , A 17 and A 18 can also correspond to other ⁇ values and other coherent bandwidths, which will not be repeated here.
  • N and V 3 It may belong to the set A 19 , A 20 or A 21 shown in Table 15 below, and the correspondence between the set A 19 , A 20 or A 21 and N satisfies at least one row in Table 15.
  • the design according to the above table To determine q 1 , q 2 , q 3 and q 4 , it can make the frequency domain flatness of different channels, when there are ⁇ terminal devices based on the same base sequence of a sequence group and ⁇ different cyclic shift values
  • the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low.
  • this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 8RB, 10RB, 12RB or 24RB (comb is 4), Belongs to A 19 ;
  • the coherence bandwidth is 3RB (comb is 2), or the coherence bandwidth is 6RB (comb is 4), Belongs to A 20 ;
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 8RB, 10RB, 12RB or 24RB (comb is 4), Belongs to A 21 .
  • a 19 , A 20 and A 21 can also correspond to other ⁇ values and other coherent bandwidths, which will not be repeated here.
  • N and V 3 It can be equal to the set A 22 , A 23 or A 24 , and the corresponding relationship between the set A 22 , A 23 or A 24 and N satisfies at least one row in Table 16.
  • the design according to the above table To determine q 1 , q 2 , q 3 and q 4 , it can make the frequency domain flatness of different channels, when there are ⁇ terminal devices based on the same base sequence of a sequence group and ⁇ different cyclic shift values
  • the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low.
  • this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4, 8) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • ⁇ values for example, 1, 2, 4, 8
  • channel coherence bandwidths for example, when the comb tooth is 2, the coherence bandwidth is 3RB, 4RB, 5RB, 6RB Or 12RB; or, when the comb tooth is 4, the coherence bandwidth is 6RB, 8RB, 10RB, 12RB or 24RB).
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 8RB, 10RB, 12RB or 24RB (comb is 4), Belongs to A 22 ;
  • the coherence bandwidth is 3RB (comb is 2), or the coherence bandwidth is 6RB (comb is 4), Belongs to A 23 ;
  • the coherence bandwidth is 4RB, 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 8RB, 10RB, 12RB or 24RB (comb is 4), Belongs to A 24 .
  • a 22 , A 23 and A 24 can also correspond to other ⁇ values and other coherent bandwidths, which will not be repeated here.
  • X is an integer greater than or equal to 5
  • the X base sequences include five base sequences, and the roots of the ZC sequences corresponding to the five base sequences are q 4 , (q 4 +V 4 )mod N, (q 4 +W 3 )mod N, (q 4 +O 2 )mod N and (q 4 +P)mod N, where q 4 is an integer from 1 to N-1, and V 4 is an integer, and the range of the absolute value of V 4 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 3 is an integer, and the range of the absolute value of W 3 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 2 is an integer, and the range of the absolute value of O 2 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], P is an integer, and The range of the absolute value of P is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the five base sequences in this embodiment may include at least one of the base sequences already mentioned in the above-mentioned embodiment, or may be other sequences different from the above-mentioned base sequence, that is, q 4 and q 1 , q 2 Or q 3 can be equal or unequal, V 4 and V 1 , V 2 or V 3 can be equal or unequal, W 3 and W 1 or W 2 can be equal or unequal, O 2 and O 1 may be equal or unequal, which is not limited in the embodiment of the present application.
  • c i is an integer determined according to V 4 .
  • W 3 may be determined according to V 4
  • V 4 may be determined according to W 3
  • V 4 and W 3 may be independently designed values, and there is no clear and direct relationship between each other.
  • O 2 can be determined based on V 4
  • V 4 can be determined based on O 2
  • V 4 and O 2 can be independently designed values, and there is no clear and direct relationship between each other.
  • P can be determined based on V 4 , or V 4 can be determined based on P, or V 4 and P can be independently designed values, and there is no clear and direct relationship between them.
  • V 4 The characteristics of V 4 are:
  • V 4 is an integer
  • V 4 can be the same or different
  • V 4 belongs to [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • W 3 is an integer
  • the value of W 3 can be the same or different
  • O 2 The characteristics of O 2 are:
  • O 2 is an integer
  • the value of O 2 can be the same or different
  • the value of P can be the same or different
  • the number of base sequences of length M in the first sequence group is greater than or equal to 5.
  • the root of the first ZC sequence used to generate the first base sequence is q 1
  • the root of the second ZC sequence used to generate the second base sequence is q 2
  • the root of the third base sequence The root of the third ZC sequence is q 3
  • the root of the fourth ZC sequence used to generate the fourth base sequence is q 4
  • the root of the fifth ZC sequence used to generate the fifth base sequence is q 5 , then
  • W 3 -V 4
  • O 2 (2 ⁇ V 4 ) mod N
  • P (-2 ⁇ V 4 ) mod N; or,
  • V 4 The absolute value of V 4 can be divided into the following situations.
  • the absolute values of N, V 4 , W 3 , O 2 , and P can belong to the following table 17
  • the sets A 25 and A 26 are shown .
  • N and V 4 It may belong to the set A 25 or A 26 shown in Table 17 below, and the correspondence between the set A 25 or A 26 and N satisfies at least one row in Table 17.
  • at least one formula in formulas (1) to (4) can be used to determine the root q 1 of the first ZC sequence, the root q 2 of the second ZC sequence, and the root q 2 of the third ZC sequence. q. 3 root, root ZC sequence q 4 of the fourth and the fifth root ZC sequence q.
  • the design according to the above table To determine q 1 , q 2 , q 3 , q 4, and q 5 , which can make the frequency domain flatness of different channels when there are ⁇ terminal devices based on the same base sequence of a sequence group and ⁇ different cycles
  • the reference signal sequence is determined by the shift value, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low.
  • this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB; or , When the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • the coherence bandwidth is 4RB (comb is 2), or the coherence bandwidth is 8RB (comb is 4), Belongs to A 25 ;
  • the coherence bandwidth is 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 10RB, 12RB or 24RB (comb is 4), Belongs to A 26 .
  • a 25 and A 26 can also correspond to other ⁇ values and other coherent bandwidths, which will not be repeated here.
  • N and V 4 It may belong to the set A 27 or A 28 shown in Table 18 below, and the correspondence between the set A 27 or A 28 and N satisfies at least one row in Table 18.
  • the design according to the above table To determine q 1 , q 2 , q 3 , q 4, and q 5 , which can make the frequency domain flatness of different channels when there are ⁇ terminal devices based on the same base sequence of a sequence group and ⁇ different cycles
  • the reference signal sequence is determined by the shift value, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low.
  • this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB; or , When the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • the coherence bandwidth is 4RB (comb is 2), or the coherence bandwidth is 8RB (comb is 4), Belongs to A 27 ;
  • the coherence bandwidth is 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 10RB, 12RB or 24RB (comb is 4), Belongs to A 28 .
  • a 27 and A 28 can also correspond to other ⁇ values and other coherent bandwidths, which will not be repeated here.
  • N and V 4 It can be equal to the set A 29 or A 30 , and the corresponding relationship between the value of the set A 29 or A 30 and N satisfies at least one row in Table 19.
  • the design according to the above table To determine q 1 , q 2 , q 3 , q 4, and q 5 , which can make the frequency domain flatness of different channels when there are ⁇ terminal devices based on the same base sequence of a sequence group and ⁇ different cycles
  • the reference signal sequence is determined by the shift value, the sum of the interference power of these reference signal sequences to the reference signal determined based on the other base sequence of the sequence group is very low.
  • this solution does not increase the interference between the reference signal sequences determined based on the base sequences of different sequence groups.
  • this embodiment can be applied to different ⁇ values (for example, 1, 2, 4) and different channel coherence bandwidths (for example, when the comb tooth is 2, the coherence bandwidth is 4RB, 5RB, 6RB or 12RB; or , When the comb tooth is 4, the coherence bandwidth is 8RB, 10RB, 12RB or 24RB).
  • the coherence bandwidth is 4RB (comb is 2), or the coherence bandwidth is 8RB (comb is 4), Belongs to A 29 ;
  • the coherence bandwidth is 5RB, 6RB or 12RB (comb is 2), or the coherence bandwidth is 10RB, 12RB or 24RB (comb is 4), Belongs to A 30 .
  • a 29 and A 30 can also correspond to other ⁇ values and other coherent bandwidths, which will not be repeated here.
  • Fig. 5 shows an apparatus 500 provided by an embodiment of the present application.
  • the device 500 may be a terminal device, or a device capable of supporting the terminal device to realize its functions, for example, a chip or a chip system that can be used in the terminal device.
  • the device 500 includes a processing unit 510 and a sending unit 520.
  • the apparatus 500 is configured to execute each process and step corresponding to the terminal device in the method provided in the embodiment of the present application.
  • the processing unit 510 is configured to: obtain a reference signal sequence of length M, where M is an integer greater than 1;
  • the sending unit 520 is configured to send the reference signal sequence to a network device
  • the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the number of base sequences of length M in the first sequence group is X ,
  • the X base sequences have the same group index, the X base sequences are determined by X ZC sequences of length N, where N is an integer greater than 1, and X is an integer greater than or equal to 2.
  • the roots of the ZC sequence corresponding to any two of the X basis sequences are q 1 and (q 1 +V 1 )mod N, q 1 is an integer from 1 to N-1, V 1 is an integer, and V 1
  • the range of the absolute value of is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 , K 2 , K 3 and K 4 are all integers, K 1 >1, K 4 ⁇ N-1, when N is an odd number, When N is even, Represents the largest integer less than or equal to A, [A, B] represents a set of integers greater than or equal to A and less than or equal to B, and A mod B represents that A modulates B.
  • the first sequence group belongs to Y sequence groups, and Y is an integer greater than or equal to 2; the number of base sequences with length M in the y-th sequence group in the Y sequence groups is X (y) , the X (y) base sequences of length M are determined by X (y) ZC sequences of length N, X (y) is an integer greater than or equal to 2, the X (y ) The roots of the ZC sequence corresponding to any two of the base sequences of length M are q′ and (q′+V′) mod N, q′ is an integer from 1 to N-1, and V′ is an integer , And the value range of the absolute value of V'is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the absolute value of V 1 belongs to the set
  • N is an odd number greater than or equal to the first threshold
  • the absolute value of V 1 belongs to the set
  • N is an odd number greater than or equal to the first threshold
  • the absolute value of V 1 belongs to the set
  • the absolute value of V′ belongs to the set
  • the absolute value of V'belongs to the set Represents the smallest integer greater than or equal to A.
  • X is an integer greater than or equal to 3
  • the X base sequences include three base sequences, and the roots of the ZC sequences corresponding to the three base sequences are q 2 , (q 2 +V 2 ), respectively mod N and (q 2 +W 1 ) mod N, where q 2 is an integer from 1 to N-1, V 2 is an integer, and the absolute value of V 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 1 is an integer, and the range of the absolute value of W 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • X is an integer greater than or equal to 4
  • the X base sequences include four base sequences, and the roots of the ZC sequences corresponding to the four base sequences are q 3 , (q 3 +V 3 ) mod N, (q 3 +W 2 )mod N and (q 3 +O 1 )mod N, where q 3 is an integer from 1 to N-1, V 3 is an integer, and the range of the absolute value of V 3 Is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 2 is an integer, and the absolute value of W 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 1 is an integer, and the range of the absolute value of O 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • X is an integer greater than or equal to 5
  • the X base sequences include five base sequences, and the roots of the ZC sequences corresponding to the five base sequences are q 4 , (q 4 +V 4 ), respectively mod N, (q 4 +W 3 )mod N, (q 4 +O 2 )mod N, and (q 4 +P)mod N, where q 4 is an integer from 1 to N-1, and V 4 is an integer, And the range of the absolute value of V 4 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 3 is an integer, and the range of the absolute value of W 3 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 2 is an integer, and the range of the absolute value of O 2 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], P is an integer, and the absolute value of P The value range of is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the device 500 here is embodied in the form of a functional unit.
  • the term "unit” here can refer to application specific integrated circuit (application specific integrated circuit, ASIC), electronic circuit, processor for executing one or more software or firmware programs (such as shared processor, proprietary processor or group Processor, etc.) and memory, merge logic circuits and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the apparatus 500 may be specifically the terminal device in the foregoing embodiment, and the apparatus 500 may be used to execute each process and/or step corresponding to the terminal device in the foregoing method embodiment. To avoid repetition, I won’t repeat them here.
  • FIG. 6 shows an apparatus 600 provided by an embodiment of the present application.
  • the device 600 may be a network device, or a device capable of supporting the network device to realize its functions, for example, a chip or a chip system that can be used in the network device.
  • the device 600 includes a sending unit 610 and a receiving unit 620.
  • the sending unit 610 is configured to send configuration information to a terminal device, where the configuration information is used to configure a first sequence group, the number of base sequences of length M in the first sequence group is X, and the X base sequences Sequences have the same group index, the X base sequences are determined by X ZC sequences, N is an integer greater than 1, X is an integer greater than or equal to 2, any two base sequences in the X base sequences
  • the roots of the corresponding ZC sequence are q 1 and (q 1 +V 1 )mod N respectively, q 1 is an integer from 1 to N-1, V 1 is an integer, and the absolute value of V 1 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 , K 2 , K 3 and K 4 are all integers, K 1 >1, K 4 ⁇ N-1, when N is an odd number, When N is even, Represents the largest integer less than or equal to A, [A, B] represents a set of integers greater than
  • the receiving unit 620 is configured to receive a reference signal sequence, the reference signal sequence is determined by a first base sequence, and the first base sequence belongs to the first sequence group.
  • the first sequence group belongs to Y sequence groups, and Y is an integer greater than or equal to 2; the number of base sequences with length M in the y-th sequence group in the Y sequence groups is X (y) , the X (y) base sequences of length M are determined by X (y) ZC sequences of length N, X (y) is an integer greater than or equal to 2, the X (y ) The roots of the ZC sequence corresponding to any two of the base sequences of length M are q′ and (q′+V′) mod N, q′ is an integer from 1 to N-1, and V′ is an integer , And the value range of the absolute value of V'is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the absolute value of V 1 belongs to the set
  • N is an odd number greater than or equal to the first threshold
  • the absolute value of V 1 belongs to the set
  • N is an odd number greater than or equal to the first threshold
  • the absolute value of V 1 belongs to the set
  • the absolute value of V′ belongs to the set
  • the absolute value of V'belongs to the set Represents the smallest integer greater than or equal to A.
  • X is an integer greater than or equal to 3
  • the X base sequences include three base sequences, and the roots of the ZC sequences corresponding to the three base sequences are q 2 , (q 2 +V 2 ), respectively mod N and (q 2 +W 1 ) mod N, where q 2 is an integer from 1 to N-1, V 2 is an integer, and the absolute value of V 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 1 is an integer, and the range of the absolute value of W 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • X is an integer greater than or equal to 4
  • the X base sequences include four base sequences, and the roots of the ZC sequences corresponding to the four base sequences are q 3 , (q 3 +V 3 ) mod N, (q 3 +W 2 )mod N and (q 3 +O 1 )mod N, where q 3 is an integer from 1 to N-1, V 3 is an integer, and the range of the absolute value of V 3 Is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 2 is an integer, and the absolute value of W 2 ranges from [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 1 is an integer, and the range of the absolute value of O 1 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • X is an integer greater than or equal to 5
  • the X base sequences include five base sequences, and the roots of the ZC sequences corresponding to the five base sequences are q 4 , (q 4 +V 4 ), respectively mod N, (q 4 +W 3 )mod N, (q 4 +O 2 )mod N, and (q 4 +P)mod N, where q 4 is an integer from 1 to N-1, and V 4 is an integer, And the range of the absolute value of V 4 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], W 3 is an integer, and the range of the absolute value of W 3 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], O 2 is an integer, and the range of the absolute value of O 2 is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], P is an integer, and the absolute value of P The value range of is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ].
  • the device 600 here is embodied in the form of a functional unit.
  • the term "unit” here can refer to application specific integrated circuit (application specific integrated circuit, ASIC), electronic circuit, processor for executing one or more software or firmware programs (such as shared processor, proprietary processor or group Processor, etc.) and memory, merge logic circuits and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the apparatus 500 may be specifically the network device in the above-mentioned embodiment, and the apparatus 600 may be used to execute each process and/or step corresponding to the network device in the above-mentioned method embodiment. To avoid repetition, I won’t repeat them here.
  • the apparatus 500 and the apparatus 600 of the above solutions respectively have the functions of implementing the corresponding steps performed by the terminal equipment and the network equipment in the above methods; the functions can be implemented by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the sending unit and the receiving unit can be replaced by a communication interface, and other units, such as a processing unit, can be replaced by a processor to execute the respective method embodiments. Send and receive operations and related processing operations.
  • the communication interface may be a circuit, module, bus, bus interface, transceiver, and other devices that can implement communication functions.
  • the devices in FIG. 5 and FIG. 6 may also be a chip or a chip system, such as a system on chip (system on chip, SoC).
  • the receiving unit and the sending unit may be the transceiver circuit of the chip, which is not limited here.
  • FIG. 7 shows another apparatus 700 provided by an embodiment of the present application.
  • the device 700 includes a processor 710 and a communication interface 720.
  • the device 700 may further include a memory 750.
  • the memory 750 may be included in the processor 710.
  • the processor 710, the communication interface 720, and the memory 750 communicate with each other through an internal connection path, the memory 750 is used to store instructions, and the processor 710 is used to execute instructions stored in the memory 750 to implement the method provided in the embodiments of the present application.
  • the apparatus 700 is configured to execute each process and step corresponding to the terminal device in the method provided in the embodiment of the present application.
  • the processor 710 is configured to: obtain a reference signal sequence of length M, where M is an integer greater than 1, and send the reference signal sequence to the network device through the communication interface 720; wherein, the reference signal sequence is composed of a length of M
  • the first base sequence is determined by the first base sequence, the first base sequence belongs to a first sequence group, the number of base sequences with a length of M in the first sequence group is X, and the X base sequences have the same group index ,
  • the X base sequences are determined by X ZC sequences of length N, N is an integer greater than 1, X is an integer greater than or equal to 2, and any two base sequences in the X base sequences correspond to
  • the roots of the ZC sequence are respectively q 1 and (q 1 +V 1 )mod N, q 1 is an integer from 1 to N-1, V 1 is an integer, and the absolute value of V 1 ranges from [K 1 , K 2 ] ⁇ [K 3 ,K 4 ], K 1 , K 2 ,
  • the apparatus 700 is used to execute each process and step corresponding to the network device in the method provided in the embodiment of this application.
  • the processor 710 is configured to send configuration information to the terminal device through the communication interface 720, the configuration information is used to configure a first sequence group, and the number of base sequences of length M in the first sequence group is X,
  • the X base sequences have the same group index, and the X base sequences are determined by X ZC sequences with a length of N, where N is an integer greater than 1, and X is an integer greater than or equal to 2.
  • the roots of the ZC sequence corresponding to any two of the base sequences are q 1 and (q 1 +V 1 )mod N, q 1 is an integer from 1 to N-1, V 1 is an integer, and the value of V 1
  • the absolute value range is [K 1 ,K 2 ] ⁇ [K 3 ,K 4 ], K 1 , K 2 , K 3 and K 4 are all integers, K 1 >1, K 4 ⁇ N-1, when N is an odd number, When N is even, Represents the largest integer less than or equal to A, [A, B] represents a collection of integers greater than or equal to A and less than or equal to B, A mod B represents A modulo B; the reference signal sequence is received through the communication interface 720, The reference signal sequence is determined by a first base sequence, and the first base sequence belongs to the first sequence group.
  • the apparatus 700 may be specifically a terminal device or a network device in the foregoing embodiment, and may be used to execute various steps and/or processes corresponding to the terminal device or the network device in the foregoing method embodiment.
  • the memory 750 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A part of the memory may also include a non-volatile random access memory.
  • the memory can also store device type information.
  • the processor 710 may be configured to execute instructions stored in the memory, and when the processor 710 executes the instructions stored in the memory, the processor 710 is configured to execute the steps and/or steps of the above-mentioned method embodiment corresponding to the terminal device or the network device. Or process.
  • the processor of the above-mentioned device may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), or application-specific integrated circuits. (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software units in the processor.
  • the software unit may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor executes the instructions in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And/or describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • "The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c or a-b-c, where a, b, and c can be single or multiple.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, SSD).

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Abstract

La présente invention concerne un procédé et un appareil de communication, capables d'augmenter le nombre de racines utilisées dans chaque cellule, et de réduire l'interférence provenant de différents dispositifs terminaux de la même cellule lors de l'envoi d'une séquence de signaux de référence. Ledit procédé peut être appliqué à un système de communication, tel que V2X, LTE-V, V2V, MTC, IoT, LTE-M, M2M, etc. Ledit procédé comprend : l'acquisition d'une séquence de signaux de référence ayant une longueur de M, et l'envoi de la séquence de signaux de référence à un dispositif de réseau. La séquence de signaux de référence est déterminée par une première séquence de base ayant une longueur de M et appartenant à un premier ensemble de séquences, et le nombre de séquences de base ayant une longueur de M dans le premier ensemble de séquences est X. Les X séquences de base sont déterminées par X séquences ZC ayant une longueur de N. Les racines des séquences ZC correspondant à deux séquences de base quelconques sont respectivement q1 et (q1+V1)mod N, q1 étant un nombre entier de 1 à N-1, et V1 étant un nombre entier. Lorsque N est un nombre impair, la plage de valeurs d'une valeur absolue de V1 ne comprend pas 1, (I), (II) et N-1. Lorsque N est un nombre pair, la plage de valeurs d'une valeur absolue de V1 ne comprend pas 1, (1) et N-1.
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