WO2017162021A1 - 信息发送方法及装置、计算机存储介质 - Google Patents

信息发送方法及装置、计算机存储介质 Download PDF

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WO2017162021A1
WO2017162021A1 PCT/CN2017/075850 CN2017075850W WO2017162021A1 WO 2017162021 A1 WO2017162021 A1 WO 2017162021A1 CN 2017075850 W CN2017075850 W CN 2017075850W WO 2017162021 A1 WO2017162021 A1 WO 2017162021A1
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Prior art keywords
information
reference signal
sequence
time
time domain
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English (en)
French (fr)
Inventor
梁春丽
夏树强
韩祥辉
张雯
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ZTE Corp
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ZTE Corp
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Priority to US16/087,274 priority Critical patent/US10771300B2/en
Priority to EP17769298.5A priority patent/EP3435610A4/en
Publication of WO2017162021A1 publication Critical patent/WO2017162021A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26136—Pilot sequence conveying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/262—Reduction thereof by selection of pilot symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present invention relates to the field of communications, and in particular to an information transmitting method and apparatus, and a computer storage medium.
  • the rapid development of the mobile Internet and the Internet of Things has led to the explosive growth of data traffic and the proliferation of diversified and differentiated services.
  • the fifth generation of mobile communication technology (5-generation, 5G) as a new generation of mobile communication technology, compared to the fourth generation of mobile communication technology (4-generation, 4G) will support higher speed, huge links, ultra-low latency, Higher reliability, 100 times higher energy efficiency, etc. to support new demand changes.
  • ultra-low latency is a key indicator of 5G technology, which directly affects the development of time-limited services such as car networking, industrial automation, remote control, and smart grid.
  • a series of current standards for 5G delay reduction are gradually being advanced.
  • TTI Transmission Time Interval
  • the reference signal (RS) for data demodulation is multiplexed with the data in a time division manner, that is, the reference signal and the data occupancy are different.
  • the time domain symbol is the same for the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH) of the current LTE.
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • the transmission structure of the existing PUCCH and PUSCH cannot be directly used; the shortening of the TTI time domain will affect The demodulation performance of the transmitted information; the reduction in the number of symbols in the TTI will result in an excessive resource overhead of the reference symbol and a decrease in the available resources for transmitting the valid data.
  • the present invention provides an information transmitting method and apparatus, and a computer storage medium.
  • a method for transmitting information includes: determining, according to information to be sent on a physical uplink channel, a sequence corresponding to a reference signal to be transmitted from N predefined sequences, where The N predefined sequences have the same non-zero value at a predetermined position, and N is an integer greater than or equal to 2; mapping the determined sequence corresponding to the reference signal and the information to the time-frequency resource And transmitting the reference signal and the information on the time-frequency resource.
  • the N predefined sequences have the same non-zero value in a predetermined position, including:
  • the N predefined sequences When the N predefined sequences are generated in the frequency domain, the N predefined sequences have the same non-zero value at predetermined positions;
  • the sequence of the N predefined sequences subjected to the discrete Fourier transform has the same non-zero value at a predetermined position.
  • the sequence corresponding to the reference signal to be sent is determined from the N predefined sequences according to the information to be sent on the physical uplink channel, including:
  • the properties of the N predefined sequences include one of the following: It has a constant amplitude property in the frequency domain; it has a constant amplitude property in the time domain, and has a constant amplitude property in both the frequency domain and the time domain.
  • the time-frequency resource includes: a time domain resource, and a frequency domain resource; wherein the time domain resource includes: K time domain symbols, where 1 ⁇ K ⁇ 7 and K is a positive integer
  • the frequency domain resource includes: P subcarriers, where P is a positive integer multiple of one of the following numbers: 2, 3, 4, 6, and 12.
  • the frequency domain resources of the K time domain symbols are the same, or in the frequency domain resources, the frequency hopping structure is used to occupy different subcarrier positions.
  • the transmitting the reference signal and the information on the time-frequency resource including:
  • the sequence corresponding to the reference signal When the sequence corresponding to the reference signal has a constant amplitude property in the time domain resource, the sequence corresponding to the reference signal is subjected to discrete Fourier transform of P point, and the transformed sequence is mapped to P subcarriers or P On the subset of subcarriers, the inverse discrete Fourier transform is performed to transmit the reference signal and the information.
  • transmitting the reference signal on the time-frequency resource comprises: transmitting the reference signal on at least one of the K time-domain symbols.
  • different time domain symbols transmit different reference signals.
  • transmitting the reference signal and the information on the time-frequency resource including:
  • the reference signal is transmitted on both time domain symbols, wherein the reference signal carries the information.
  • the frequency domain subcarrier positions occupied by the two time domain symbols are different.
  • the information includes: uplink control information; uplink service information; uplink control information and uplink service information.
  • the predetermined position comprises: one symbol in the sequence, or a plurality of symbols arranged in a medium interval.
  • the N predefined sequences include: a sequence obtained by cyclically shifting the same sequence through different time domains, or a sequence obtained by rotating the same sequence through different frequency domain phases
  • the N predefined sequences have, but are not limited to, the following features: the N predefined sequences have the same elements corresponding to X positions in the frequency domain, where X satisfies the equation
  • the number of n, ⁇ is the relative cyclic shift amount or phase rotation amount between any two of the N predefined sequences, y is an integer greater than or equal to 0, and n is taken from the set [0, An integer of L-1], L is the length of a predefined sequence, 0 ⁇ ⁇ ⁇ L, N is a positive integer greater than or equal to 2, and less than L.
  • an information sending apparatus including: a determining module, configured to determine a reference signal to be sent from N predefined sequences according to information to be sent on a physical uplink channel. Corresponding sequence, wherein the N predefined sequences have the same non-zero value at a predetermined position, N is an integer greater than or equal to 2; a mapping module configured to determine the reference signal The corresponding sequence and the information are mapped to the time-frequency resource; and the sending module is configured to send the reference signal and the information on the time-frequency resource.
  • the determining module includes: an acquiring unit configured to obtain Taking the number of bits of the information and the type of information; the selecting unit is configured to select a sequence corresponding to the reference signal to be transmitted from the N predefined sequences according to the number of bits and the type of information.
  • a computer storage medium storing a computer program configured to perform the above information transmitting method.
  • the sequence corresponding to the reference signal is selected from the N sequences according to the information to be sent on the physical uplink channel, thereby implementing a technical solution for transmitting the foregoing information according to the sequence of the reference signal, and solving the technical solution.
  • the overhead of the reference signal increases, thereby causing a problem that the physical uplink channel transmits valid data (corresponding to information to be transmitted on the physical uplink channel), thereby improving the available resources.
  • FIG. 3 is a flowchart of a method for transmitting information according to an embodiment of the present invention
  • FIG. 4 is a block diagram showing the structure of an information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a determining module 40 of an information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of transmission information according to a preferred embodiment 3 of the present invention.
  • FIG. 7 is a schematic diagram of another transmission information according to a preferred embodiment 3 of the present invention.
  • FIG. 8 is a schematic diagram of still another transmission information according to a preferred embodiment 3 of the present invention.
  • FIG. 1 shows that the PUCCH format 1a/1b is confirmed under a conventional CP when the existing TTI is 1 millisecond.
  • ACK Acknowledgment
  • NACK Negative Acknowledgment
  • the reference signal RS is transmitted on the time domain symbol #2/3/4 of each slot, and the control information is transmitted on the symbol #0/1/5/6 of each slot. , where the time domain symbols are numbered starting from 0.
  • the reference signal and the control information are multiplexed in a time division manner.
  • the existing structure adopts a time domain spread spectrum method to increase the number of multiplexed users.
  • the delay is reduced by using the short TTI technique, the number of TTI symbols is only 1 to 7.
  • Existing slot-based frequency hopping structures and time domain spreading structures are not applicable, especially when the number of TTI symbols is only one or two.
  • the PUSCH is used to send uplink service information.
  • the reference signal occupies the time domain symbol #3 of each time slot, and the service information occupies the remaining symbols of the time slot, wherein the time domain symbols are numbered starting from 0.
  • the reference signal and the service information are also time-division multiplexed, and the reference signal and the service information respectively occupy different time domain symbols.
  • the delay is reduced by using the short TTI technique, the number of TTI symbols is only 1 to 7 time domain symbol lengths, and the existing PUSCH structure cannot be applied, especially when the number of TTI symbols is only one or two.
  • FIG. 3 is a flowchart of a method for sending information according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:
  • Step S302 Determine, according to information to be sent on the physical uplink channel, a sequence corresponding to the reference signal to be sent from the N predefined sequences, where the N predefined sequences have the same non-predetermined position.
  • N is an integer greater than or equal to 2;
  • Step S304 the sequence and information corresponding to the determined reference signal are mapped to the time-frequency resource, and the reference signal and the information are sent on the time-frequency resource.
  • N sequences having the same non-zero value at predetermined positions are defined in advance, and corresponding reference signals are selected from the N sequences according to information to be sent on the physical uplink channel.
  • the sequence, the sequence and the foregoing information are all mapped to the time-frequency resource, and the reference signal and the information are sent on the time-frequency resource, and the foregoing technical solution provided by the embodiment of the present invention is used to solve the related art, along with the number of TTI symbols.
  • the reduction of the reference signal increases the number of available resources of the physical uplink channel to transmit valid data, thereby improving the available resources for transmitting valid data.
  • the N predefined sequences having the same non-zero value at a predetermined position may be the same non-zero value at one symbol position or a plurality of equally spaced positions of the sequence, specifically, When the sequence corresponding to the reference signal is generated in the frequency domain, N predefined sequences are in advance The determined positions have the same value; when the sequence corresponding to the reference signal is generated in the time domain, the sequence of the N predefined sequences subjected to the discrete Fourier transform has the same value at a predetermined position.
  • step S302 can be implemented in various manners.
  • the following technical solutions can be implemented: obtaining the number of bits of the control information and the type of the control information; and determining the value of the number of information bits from the N pieces.
  • the sequence corresponding to the reference signal to be sent is selected in the sequence, and an implementation that may be implemented in step S302 may be specifically as follows.
  • the properties of the sequence corresponding to the reference signals selected from the N predefined sequences include one of the following: a constant amplitude property in the frequency domain,
  • the time domain has a constant amplitude property, and has constant amplitude properties in both the frequency domain and the time domain.
  • the sequence corresponding to the reference signal has a constant amplitude property in the frequency domain resource, the sequence corresponding to the reference signal is mapped to P subcarriers.
  • P subcarriers are resources included in the frequency domain resource, and P preferably includes a positive integer of one of the following numbers. Times: 2, 3, 4, 6, 12
  • the above time domain resources further include: K time domain symbols, wherein 1 ⁇ K ⁇ 7 and K is an integer, it should be noted that "constant amplitude property" can be understood as One Constant nature.
  • the frequency domain resources of the K time domain symbols are the same, or in the frequency domain resources, the frequency hopping structure is used to occupy different subcarrier positions.
  • transmitting the reference signal and the control information on the time-frequency resource may be implemented by: transmitting a reference signal in the K time domains on at least one of the K time-domain symbols When the reference signal is transmitted on multiple time domain symbols in the symbol, different time domain symbols transmit different reference signals.
  • the improvement of the foregoing technical solution in the embodiment of the present invention is that when the time-frequency resource includes two time-domain symbols, the foregoing reference signal and the foregoing information are sent on the time-frequency resource, and can be implemented by: the first time-domain symbol Transmitting the above reference signal, transmitting the information on the second time domain symbol; or transmitting the information on the first time domain symbol, transmitting the reference signal on the second time domain symbol; or, in the above two
  • the reference signal is transmitted on the time domain symbols, wherein the reference signal carries the information.
  • how to carry the information in the reference signal has been described in detail, and details are not described herein again.
  • the frequency domain subcarriers occupied by the two time domain symbols are different when the reference signal is sent on the two time domain symbols.
  • the N predefined sequences are composed of the same sequence and cyclically shifted by the time domain, or the sequence obtained by the frequency domain phase rotation, the N predefined sequences have, but are not limited to, the following features:
  • the relative cyclic shift amount or the minimum value of the phase rotation amount between any two sequences of the N predefined sequences is ⁇ , and the N predefined sequences have elements corresponding to X positions in the frequency domain. Same, where X is all satisfied equation
  • an information transmitting apparatus is further provided for implementing the above-mentioned embodiments and preferred embodiments.
  • the descriptions of the modules involved in the apparatus will be described below.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • 4 is a block diagram showing the structure of an information transmitting apparatus according to an embodiment of the present invention. As shown in Figure 4, the device comprises:
  • the determining module 40 is configured to determine, according to the information to be sent on the physical uplink channel, a sequence corresponding to the reference signal to be sent from the N predefined sequences, where the N predefined sequences have a predetermined position
  • N is an integer greater than or equal to 2;
  • the mapping module 42 is connected to the determining module 40, and configured to map the sequence corresponding to the determined reference signal and the foregoing information to a time-frequency resource;
  • the sending module 44 is connected to the mapping module 42 and configured to transmit the reference signal and the information on the time-frequency resource.
  • N sequences having the same non-zero value at predetermined positions are defined in advance, and the reference is selected from the N sequences according to the information transmitted on the physical uplink channel.
  • the sequence corresponding to the signal is mapped to the video resource, and the reference signal and the information are sent on the time-frequency resource, and the foregoing technical solution provided by the embodiment of the present invention is used to solve the related art, along with the TTI symbol.
  • the overhead of the reference signal increases, which in turn causes the physical uplink control channel to transmit valid data (equivalent to the information to be transmitted on the physical uplink channel), thereby reducing the available resources for transmitting valid data.
  • FIG. 5 is a structural block diagram of a determining module 40 of an information sending apparatus according to an embodiment of the present invention.
  • the determining module 40 includes: an obtaining unit 402 configured to acquire the number of bits and information types of the information; 404, connected to the obtaining unit 402, configured to select, according to the number of bits of the information, a sequence corresponding to the reference signal to be sent from the N predefined sequences.
  • the N predefined pre-defined sequences in the determining module 40 have the same non-zero value at a predetermined position, or may be the same non-zero value at one symbol position or a plurality of equally spaced positions of the sequence, specifically Ground, when the sequence corresponding to the reference signal is generated in the frequency domain, the N predefined sequences have the same value at a predetermined position; when the sequence corresponding to the reference signal is generated in the time domain, N predefined sequences The sequence after the discrete Fourier transform has the same value at a predetermined position.
  • each unit in the information transmitting apparatus may be implemented by a central processing unit (CPU) located in the information transmitting apparatus, or Microprocessor Unit (MPU), or Digital Signal Processor (DSP), or Field Programmable Gate Array (FPGA).
  • CPU central processing unit
  • MPU Microprocessor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the main idea of the first preferred embodiment of the present invention is to provide a sequence corresponding to N predefined reference signals, wherein the sequence corresponding to the N predefined reference signals has the same non-zero take in a predetermined position.
  • a value, N is a positive integer greater than or equal to 2; determining a sequence corresponding to the transmitted reference signal according to the information (corresponding to information to be transmitted on the physical uplink channel of the above embodiment) or the part of the information; corresponding to the determined reference signal.
  • the sequence and the above information are mapped to time-frequency resources, and the reference signal and the above information are transmitted on the frequency resource.
  • sequence corresponding to the reference signal has a constant amplitude property in the frequency domain, or has a constant amplitude property in the time domain, or has a constant amplitude property in both the time domain and the frequency domain, and the preferred sequence is a constant envelope zero self.
  • a sequence consisting of ⁇ -1,-i,1,+i ⁇ or ⁇ 0.7071+0.7071i, 0.7071-0.7071i, -0.7071+0.7071i, -0.7071-0.7071i ⁇ , i is an imaginary unit, further given below
  • the receiving end can perform channel estimation in the two locations. And then using the channel estimates obtained at the two locations for interpolation to obtain a frequency domain estimate of the received signal within the receive bandwidth. If the channel is a flat fading channel, the channel estimate of the adjacent symbol can also utilize the symbol of the reference signal. The channel estimate is obtained.
  • the channel estimation of the symbol in which the reference signal is located is used to obtain the channel estimation of the symbol in which the control information or the service information is located.
  • the receiving end can perform channel estimation at the position and then use the channel estimation obtained at these positions. A frequency domain estimate of the received signal within the receive bandwidth is obtained. If the channel is a flat fading channel, the channel estimate of the adjacent symbol can also be obtained using the channel estimate of the symbol in which the reference signal is located.
  • the channel estimation of the symbol in which the reference signal is located is used to obtain the channel estimation of the symbol in which the control information or the service information is located.
  • sequence s1 is one of the base sequences of the computer-generated CAZAC sequence (Computer Generated-CAZAC, CG-CAZAC) sequence of 12, which is defined by the existing LTE, and the sequence s2 is the s1 sequence at the frequency.
  • the phase rotation of the domain (equivalent to the cyclic shift of the time domain sequence), ie:
  • k is the amount of cyclic shift.
  • the CG-CAZAC base sequence of LTE and its cyclic shift amount are sequences of k1, k2, k3, k4, ..., and the elements at k positions are the same, where k is ⁇ k1, k2, k3, k4
  • the above rule can also be extended to a CG-CAZAC sequence of length 24.
  • the N predefined sequences when N predefined sequences are cyclically shifted by the same sequence and its time domain, or a sequence obtained by frequency domain phase rotation, the N predefined sequences have, but are not limited to, the following features. :
  • the relative cyclic shift amount or the minimum value of the phase rotation amount between any two sequences of the N predefined sequences is ⁇ , and the N predefined sequences have elements corresponding to X positions in the frequency domain. Same, where X is all satisfied equation
  • the uplink control information is a 2-bit HARQ-ACK and the currently transmitted HARQ-ACK is ⁇ NACK, ACK ⁇ , the sequence corresponding to the transmitted reference signal is sequence 3;
  • N is preferably 2 or 4. Then, by the sequence selection of the reference signal, 1 or 2 bits of information can be carried extra or repeatedly.
  • FIG. 6 is a schematic diagram of transmission information according to a preferred embodiment 3 of the present invention.
  • a sequence corresponding to a reference signal is determined according to the transmitted HARQ-ACK information, and at the same time, the HARQ to be transmitted is required.
  • the ACK information is processed, wherein the processing includes modulation and frequency domain extension, where the frequency domain extension is the same as that of the existing LTE, and the frequency domain extension is used to perform frequency domain expansion on the modulated HARQ-ACK symbol. .
  • the sequence corresponding to the determined reference signal is mapped into a predefined time-frequency resource, where the reference signal is mapped to the first time domain symbol of the TTI, and the processed HARQ-ACK is mapped to a predefined time-frequency.
  • the resource it is assumed here that the HARQ-ACK information is mapped to the second time domain symbol of the TTI. It is also possible to exchange time domain symbols of reference signals and information symbols. This method is applicable to scenes where the short TTI contains at least 2 time domain symbols.
  • FIG. 7 is a schematic diagram of another transmission information according to a preferred embodiment 3 of the present invention, in which a sequence corresponding to a reference signal is determined according to the transmitted HARQ-ACK information, and then a sequence corresponding to the determined reference signal is mapped to In the predefined time-frequency resources, it is assumed here that the reference signal is mapped to all time-domain symbols of the TTI. In this manner, the scenario is applicable to any TTI length, including one time domain symbol.
  • FIG. 8 is a schematic diagram of another transmission information according to the preferred embodiment 3 of the present invention. The flow represented by FIG. 8 and the type of FIG. 6 and FIG. , will not repeat them here.
  • the HARQ-ACK is 1 or 2 bits
  • the number of bits of the HARQ-ACK is greater than 2
  • the first 1 or 2 bits of the HARQ-ACK may be passed through the reference signal in the same manner.
  • the corresponding sequence is indicated by the difference, while the rest
  • the HARQ-ACK information is directly mapped into the corresponding time domain symbols by processing such as encoding, modulation, and the like.
  • the encoded bit length is determined according to the time-frequency resource of the information mapping.
  • control information in the embodiment of the present invention may be uplink control information, and may be uplink service information, or both uplink control information and uplink service information may exist at the same time.
  • the following only the foregoing control information is used as an example. The process of the case is similar, and is not described here.
  • the technical solution mentioned in the foregoing embodiment of the present invention is actually a technical solution for carrying information to be carried in a reference signal, and specifically includes part of information carried in the reference signal, and includes All information is carried in the reference signal.
  • the technical solution of the embodiment of the present invention achieves the following technical effects: in the related art, as the number of TTI symbols decreases, the overhead of the reference signal increases, and the physical uplink channel transmits valid data (equivalent to The problem of reduced resources available for control information), thereby increasing the available resources for transmitting valid data.
  • a computer storage medium is also provided, wherein a computer program is stored, the computer program being configured to perform the information transmitting method of the embodiment of the present invention.
  • the computer storage medium includes, but is not limited to, an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the technical solution of the embodiment of the present invention selects a sequence corresponding to the reference signal from the N sequences according to the information to be sent on the physical uplink channel, thereby implementing a technical solution for transmitting the foregoing information according to the sequence of the reference signal, and solving the related In the technology, as the number of TTI symbols decreases, the overhead of the reference signal increases, thereby causing a problem that the physical uplink channel transmits valid data (corresponding to information to be transmitted on the physical uplink channel), thereby improving transmission. Available resources for valid data.

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Abstract

本发明提供了一种信息发送方法及装置、计算机存储介质，其中，所述方法包括：根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；将确定的所述参考信号对应的序列以及所述信息映射到时频资源，并在时频资源上发送所述参考信号和所述信息。

Description

信息发送方法及装置、计算机存储介质 技术领域
本发明涉及通信领域，具体而言，涉及一种信息发送方法及装置、计算机存储介质。
背景技术
移动互联网和物联网的快速发展引发了数据流量的爆发式增长和多样化、差异化业务的广泛兴起。第五代移动通信技术(5-generation，5G)作为新一代的移动通信技术，相对第四代移动通信技术(4-generation，4G)将支持更高速率、巨量链接、超低时延、更高的可靠性、百倍的能量效率提升等以支撑新的需求变化。其中，超低时延作为5G技术的关键指标，直接影响着如车联网、工业自动化、远程控制、智能电网等时延受限业务的发展。当前一系列关于5G时延降低的标准研究正在逐步推进。
降低传输时间间隔(Transmission Time Interval，TTI)作为当前降低时延的重要研究方向，旨在将现在1ms长度的TTI降低为0.5毫秒甚至1～2个符号的长度，成倍的降低了最小调度时间，进而在不改变帧结构情况下也能成倍的降低单次传输时延。
在现有长期演进(Long Term Evolution，LTE)的上行传输系统中，用于数据解调的参考信号(Reference Signal，RS)与数据采用时分的方式复用，也即，参考信号与数据占用不同的时域符号，这对于目前LTE的物理上行控制信道(Physical Uplink Control Channel，PUCCH)和物理上行共享信道(Physical Uplink Shared Channel，PUSCH)都是如此。然而，随着TTI长度的降低，会出现很多问题，如当TTI长度降低至1～7个符号长度时，现有PUCCH和PUSCH的传输结构将无法直接使用；TTI时域变短将影响 传输信息的解调性能；TTI内符号数降低将导致参考符号RS开销过大而传输有效数据的可用资源降。
针对相关技术中，随着TTI符号数的降低，参考信号的开销增大，进而导致物理上行信道发送有效数据的可用资源降低的问题，尚未提出有效的解决方案。
发明内容
为了解决上述技术问题，本发明提供了一种信息发送方法及装置、计算机存储介质。
根据本发明实施例的一个方面，提供了一种信息发送方法，包括：根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；将确定的所述参考信号对应的序列以及所述信息映射到时频资源，并在所述时频资源上发送所述参考信号和所述信息。
在本发明一实施方式中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，包括：
在所述N条预定义的序列在频域生成时，所述N条预定义的序列在预先确定的位置上具有相同的非零取值；
当所述N条预定义的序列在时域生成时，所述N条预定义的序列经过离散傅里叶变换后的序列在预先确定的位置上具有相同的非零取值。
在本发明一实施方式中，根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，包括：
根据所述信息的比特取值从N条预定义的序列中选择出待发送的参考信号所对应的序列。
在本发明一实施方式中，所述N条预定义的序列的性质包括以下之一： 在频域上具有恒幅性质；在时域上具有恒幅性质，在频域和时域同时具有恒幅性质。
在本发明一实施方式中，所述时频资源包括：时域资源，频域资源；其中，所述时域资源包括：K个时域符号，其中，1≤K≤7且K为正整数；所述频域资源包括：P个子载波，其中，P为以下数目之一的正整数倍：2、3、4、6、12。
在本发明一实施方式中，所述K个时域符号的频域资源相同，或者在所述频域资源中，采用跳频结构占用不同的子载波位置。
在本发明一实施方式中，在所述时频资源上发送所述参考信号和所述信息，包括：
当所述参考信号所对应的序列在频域资源具有恒幅性质时，将所述参考信号所对应的序列映射到P个子载波上，并进行逆离散傅里叶变换后发送所述参考信号和所述信息；
当所述参考信号所对应的序列在时域资源具有恒幅性质时，将所述参考信号所对应的序列进行P点的离散傅里叶变换，将变换后的序列映射到P个子载波或P个子载波的子集上，进行逆离散傅里叶变换后发送所述参考信号和所述信息。
在本发明一实施方式中，在所述时频资源上发送所述参考信号包括：在所述K个时域符号中的至少一个符号上，发送所述参考信号。
在本发明一实施方式中，在所述K个时域符号中的多个时域符号上发送所述参考信号时，不同的时域符号发送不同的参考信号。
在本发明一实施方式中，当时频资源包含两个时域符号时，在所述时频资源上发送所述参考信号和所述信息，包括：
在第一个时域符号上发送所述参考信号，在第二个时域符号上发送所述信息；或者，
在第一个时域符号上发送所述信息，在第二个时域符号上发送所述参考信号；或者，
在所述两个时域符号上均发送所述参考信号，其中，该参考信号携带有所述信息。
在本发明一实施方式中，在所述两个时域符号上发送所述参考信号时，所述两个时域符号占用的频域子载波位置不同。
在本发明一实施方式中，所述信息包括：上行控制信息；上行业务信息；上行控制信息和上行业务信息。
在本发明一实施方式中，所述预先确定的位置包括：序列中的一个符号，或者序列中等间隔设置的多个符号。
在本发明一实施方式中，当所述N条预定义的序列包括：同一序列经过不同的时域循环移位得到的序列，或者同一序列经过不同的频域相位旋转得到的序列时，所述N条预定义序列具有但并不限于以下特征：所述N条预定义的序列在频域上有X个位置对应的元素相同，其中，X为满足等式
Figure PCTCN2017075850-appb-000001
的n的个数，α为所述N条预定义序列中任意两条序列之间的相对循环移位量或相位旋转量，y为大于或者等于0的整数，n为取自集合[0,L-1]的整数，L为预定义的序列的长度，0＜α＜L，N为大于等于2，且小于L的正整数。
根据本发明实施例的另一个方面，还提供了一种信息发送装置，包括：确定模块，配置为根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；映射模块，配置为将确定的所述参考信号对应的序列以及所述信息映射到时频资源；发送模块，配置为所述时频资源上发送所述参考信号和所述信息。
在本发明一实施方式中，所述确定模块，包括：获取单元，配置为获 取所述信息的比特数及信息类型；选择单元，配置为根据所述比特数和信息类型从N条预定义的序列中选择出待发送的参考信号所对应的序列。
根据本发明实施例的另一个方面，还提供了一种计算机存储介质，该计算机存储介质存储有计算机程序，该计算机程序配置为执行上述信息发送方法。
通过本发明实施例的技术方案，根据物理上行信道上待发送的信息从N条序列中选择出参考信号所对应的序列，进而实现了根据参考信号的序列来发送上述信息的技术方案，解决了相关技术中，随着TTI符号数的降低，参考信号的开销增大，进而导致物理上行信道发送有效数据(相当于上述物理上行信道上待发送的信息)的可用资源降低的问题，进而提高了传输有效数据的可用资源。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为TTI＝1毫秒PUCCH格式1a/1b在常规循环前缀(Cyclic Prefix，CP)下的结构示意图；
图2为TTI＝1毫秒PUSCH在常规CP下的结构示意图；
图3为根据本发明实施例的信息发送方法的流程图；
图4为根据本发明实施例的信息发送装置的结构框图；
图5为根据本发明实施例的信息发送装置的确定模块40的结构框图；
图6为根据本发明优选实施例3的发送信息示意图；
图7为根据本发明优选实施例3的另一种发送信息示意图；
图8为根据本发明优选实施例3的又一种发送信息示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
图1为TTI＝1毫秒PUCCH格式1a/1b在常规循环前缀(Cyclic Prefix，CP)下的结构示意图，图1中给出了现有TTI＝1毫秒时PUCCH格式1a/1b在常规CP下确认/非确认(Acknowledgment，ACK)/(Negative Acknowledgment，NACK)应答信息的传输结构。现有PUCCH结构中时域占用1个子帧(对应两个时隙)，频域占用1个物理资源块(Physical Resource Block，PRB)，时隙间采用跳频，PUCCH格式1a/1b用于发送PDSCH的应答信息ACK/NACK。在图1所示的结构图中，参考信号RS在每个时隙的时域符号#2/3/4上发送，控制信息在每个时隙的符号#0/1/5/6上发送，其中时域符号从0开始编号。从图1可以看出，参考信号与控制信息采用时分的方式复用。另外，现有结构采用了时域扩频的方式以增加复用用户数。然而，采用短TTI技术实现时延降低时，TTI符号数只有1～7个。现有的基于时隙的跳频结构以及时域扩频结构无法适用，尤其是当TTI符号数只有1个或2个时。
图2为TTI＝1毫秒PUSCH在常规CP下的结构示意图，如图2所示，PUSCH用于发送上行业务信息。现有PUSCH结构中，参考信号占用每个时隙的时域符号#3，业务信息占用时隙的其余符号，其中时域符号从0开始编号。与PUCCH一样，在PUSCH上，参考信号与业务信息也是采用时分复用的方式，参考信号和业务信息分别占用不同的时域符号。然而，采用短TTI技术实现时延降低时，TTI符号数只有1～7个时域符号长度，现有的PUSCH结构将无法适用，尤其是当TTI符号数只有1个或2个时。
为了解决上述问题，在本发明实施例中，提供了一种信息发送方法，图3为根据本发明实施例的信息发送方法的流程图，如图3所示，包括以下步骤：
步骤S302，根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；
步骤S304，确定的参考信号对应的序列以及信息映射到时频资源，并在上述时频资源上发送参考信号和信息。
通过本发明实施例的技术方案，预先定义出N条在预先确定的位置上具有相同的非零取值的序列，根据物理上行信道上待发送的信息从这N条序列选择出参考信号对应的序列，将该序列和上述信息均映射到时频资源上，并在时频资源上发送参考信号和信息，采用本发明实施例提供的上述技术方案，解决了相关技术中，随着TTI符号数的降低，参考信号的开销增大，进而导致物理上行信道发送有效数据的可用资源降低的问题，进而提高了传输有效数据的可用资源。
可选地，N条预定义的序列在预先确定的位置上具有相同的非零取值可以是在序列的一个符号位置上或多个等间隔的位置上取相同的非零值，具体地，在参考信号对应的序列在频域生成时，N条预定义的序列在预先 确定的位置上具有相同的取值；当参考信号对应的序列在时域生成时，N条预定义的序列经过离散傅里叶变换后的序列在预先确定的位置上具有相同的取值。
实现上述步骤S302可以有多种实现方式，在本发明实施例中，可以通过以下技术方案实现：获取上述控制信息的比特数及控制信息类型；根据上述信息比特数的取值情况从N条预定义的序列中选择出待发送的参考信号所对应的序列，步骤S302可能实现的一种实现方式可以具体如下优选实施例2所示此处不再赘述。
由于上述N条预定义的序列具备下述具备的性质，因此从N条预定义的序列中选取出的参考信号所对应的序列的性质包括以下之一：在频域上具有恒幅性质，在时域上具有恒幅性质，在频域和时域同时具有恒幅性质，当参考信号所对应的序列在频域资源具有恒幅性质时，将上述参考信号所对应的序列映射到P个子载波上，并进行逆离散傅里叶变换后发送；当上述参考信号所对应的序列在时域资源具有恒幅性质时，将上述参考信号所对应的序列进行P点的离散傅里叶变换，将变换后的序列映射到P个子载波或P个子载波的子集上，进行逆离散傅里叶变换后发送，P个子载波为频域资源所包括的资源，P优选包括以下数目之一的正整数倍：2、3、4、6、12上述时域资源还包括：K个时域符号，其中，1≤K≤7且K为整数，需要说明的是，“恒幅性质”可以理解为是一种幅度恒定的性质。
在一个可选实施例中，上述K个时域符号的频域资源相同，或者在上述频域资源中，采用跳频结构占用不同的子载波位置。
步骤S304所体现的技术方案中，在时频资源上发送参考信号和控制信息可以通过以下方案实现：在K个时域符号中的至少一个符号上，发送参考信号，在所述K个时域符号中的多个时域符号上发送所述参考信号时，不同的时域符号发送不同的参考信号。
本发明实施例对上述技术方案的改进在于，当时频资源包含两个时域符号时，在上述时频资源上发送上述参考信号和上述信息，可以通过以下方案实现：在第一个时域符号上发送上述参考信号，在第二个时域符号上发送上述信息；或者，在第一个时域符号上发送上述信息，在第二个时域符号上发送上述参考信号；或者，在上述两个时域符号上均发送上述参考信号，其中，该参考信号携带有信息，在优选实施例2中，已经详细介绍了如何在参考信号中携带信息，此处不再赘述，在一个可选示例中，在上述两个时域符号上发送上述参考信号时，上述两个时域符号占用的频域子载波位置不同。
当N条预定义的序列由同一序列及其经过时域循环移位，或者频域相位旋转后得到的序列构成时，所述N条预定义序列具有但并不限于以下特征：
设所述N条预定义序列任意两条序列之间的相对循环移位量或相位旋转量的最小值为α，则所述N条预定义的序列在频域上有X个位置对应的元素相同，其中X为所有满足等式
Figure PCTCN2017075850-appb-000002
的n的个数，y为大于等于0的整数，n＝0,1,2,…,L-1,L为序列的长度，0＜α＜L，2≤N＜L。
在本实施例中还提供了一种信息发送装置，用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述，下面对该装置中涉及到的模块进行说明。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。图4为根据本发明实施例的信息发送装置的结构框图。如图4所示，该装置包括：
确定模块40，配置为根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；
映射模块42，与确定模块40连接，配置为将确定的参考信号对应的序列以及上述信息映射到时频资源；
发送模块44，与映射模块42连接，配置为时频资源上发送上述参考信号和上述信息。
通过本发明实施例提供的上述模块的综合作用，预先定义出N条在预先确定的位置上具有相同的非零取值的序列，根据物理上行信道上传输的信息从这N条序列选择出参考信号对应的序列，将该序列和信息均映射到视频资源上，并在时频资源上发送参考信号和信息，采用本发明实施例提供的上述技术方案，解决了相关技术中，随着TTI符号数的降低，参考信号的开销增大，进而导致物理上行控制信道发送有效数据(相当于物理上行信道上待发送的信息)的可用资源降低的问题，进而提高了传输有效数据的可用资源。
图5为根据本发明实施例的信息发送装置的确定模块40的结构框图，如图5所示，确定模块40，包括：获取单元402，配置为获取上述信息的比特数及信息类型；选择单元404，与获取单元402连接，配置为根据上述信息的比特数取值从N条预定义的序列中选择出待发送的参考信号所对应的序列。
其中，确定模块40中N条预定义的序列在预先确定的位置上具有相同的非零取值可以是在序列的一个符号位置上或多个等间隔的位置上取相同的非零值，具体地，在参考信号对应的序列在频域生成时，N条预定义的序列在预先确定的位置上具有相同的取值；当参考信号对应的序列在时域生成时，N条预定义的序列经过离散傅里叶变换后的序列在预先确定的位置上具有相同的取值。
在实际应用中，所述信息发送装置中的各个单元所实现的功能，均可由位于信息发送装置中的中央处理器(Central Processing Unit，CPU)、或 微处理器(Micro Processor Unit，MPU)、或数字信号处理器(Digital Signal Processor，DSP)、或现场可编程门阵列(Field Programmable Gate Array，FPGA)等实现。
以下结合几个优选实施例对上述信息发送过程进行说明，但不用于限定本发明实施例的保护范围。
优选实施例1
本发明优选实施例一的主要思想是：设有N条预定义的参考信号对应的序列，其中，所述N条预定义的参考信号对应的序列在预先确定的位置上具有相同的非零取值，N为大于等于2的正整数；根据信息(相当于上述实施例物理上行信道上待发送的信息)或所述信息的一部分，确定发送的参考信号对应的序列；将确定的参考信号对应的序列以及上述信息映射到时频资源，并在该频资源上发送参考信号和上述信息。
进一步的，参考信号对应的序列在频域具有恒幅性质，或在时域上具有恒幅性质，或在时域和频域同时具有恒幅性质，优选的所述序列为恒包络零自相关(Constant Amplitude Zero Auto-Correlation，简称为CAZAC)序列，或者为二相/四相序列，其中的二相序列指序列元素由{-1,+1}构成的序列，四相序列指序列元素由{-1,-i,1,+i}或{0.7071+0.7071i,0.7071-0.7071i,-0.7071+0.7071i,-0.7071-0.7071i}构成的序列，i为虚数单位，下面进一步给出满足以上特征的参考信号对应的序列的一些实施例。
具体实施例1：假设参考信号对应的序列在时域生成，设序列1和序列2以及序列1和序列2的傅里叶变换(Discrete Fourier Transform，简称为DFT)后的序列如下表1所示：
n s1(n) s2(n) DFT(s1) DFT(s2)
0 -1 -1 -4.0000 -4.0000
1 -1 -1 1.0000+5.7321i -1.0000-0.2679i
2 -1 -1 -1.0000+1.7321i -1.0000+1.7321i
3 -1 1 -2.0000+2.0000i 2.0000+2.0000i
4 -1 -1 -1.0000-1.7321i -1.0000+5.1962i
5 -1 1 1.0000+2.2679i -1.0000-3.7321i
6 -1 -1 -4.0000 -4.0000
7 1 -1 1.0000-2.2679i -1.0000+3.7321i
8 -1 1 -1.0000+1.7321i -1.0000-5.1962i
9 1 -1 -2.0000-2.0000i 2.0000-2.0000i
10 1 -1 -1.0000-1.7321i -1.0000-1.7321i
11 1 1 1.0000-5.7321i -1.0000+0.2679i
表1
从上述表1可以看出，序列s1和序列s2的傅里叶变换后的序列在第一和第七个位置上(分别对应n＝0和n＝6)是相同的，也就是说，不管发送端发送的是序列s1还是序列s2，接收端接收到的序列，在频域的第一和第七个位置上都是相同的，利用上述特性，接收端可以所述两个位置进行信道估计，然后利用这两个位置上得到的信道估计进行插值得到接收信号在接收带宽内的频域估计，如果信道是平坦衰落信道，则相邻符号的信道估计也可以利用所述参考信号所在的符号的信道估计来获取。在现有LTE系统中，无论是PUCCH结构还是PUSCH结构，都是利用参考信号所在的符号的信道估计来得到控制信息或业务信息所在符号的信道估计的。
具体实施例2：
假设参考信号对应的序列在频域生成，设序列1和序列2分别如表2所示：
n s1 s2
0 0.7071-0.7071i 0.7071-0.7071i
1 0.7071+0.7071i -0.7071-0.7071i
2 -0.7071+0.7071i -0.7071+0.7071i
3 -0.7071-0.7071i 0.7071+0.7071i
4 -0.7071+0.7071i -0.7071+0.7071i
5 -0.7071+0.7071i 0.7071-0.7071i
6 0.7071+0.7071i 0.7071+0.7071i
7 0.7071+0.7071i -0.7071-0.7071i
8 -0.7071+0.7071i -0.7071+0.7071i
9 0.7071+0.7071i -0.7071-0.7071i
10 -0.7071-0.7071i -0.7071-0.7071i
11 -0.7071+0.7071i 0.7071-0.7071i
表2
从上述表2可以看出，序列s1和序列s2的在n＝0/2/4/6/8/10上都是相同的，也就是说，不管发送端发送的是序列s1还是序列s2，接收端接收到的序列，在n＝0/2/4/6/8/10上都是相同的，利用上述特性，接收端可以所述位置进行信道估计，然后利用这些位置上得到的信道估计得到接收信号在接收带宽内的频域估计，如果信道是平坦衰落信道，则相邻符号的信道估计也可以利用所述参考信号所在的符号的信道估计来获取。在现有LTE系统中，无论是PUCCH结构还是PUSCH结构，都是利用参考信号所在的符号的信道估计来得到控制信息或业务信息所在符号的信道估计的。
需要注意的是，上述的序列s1为现有LTE定义的长为12的计算机生成的CAZAC序列(Computer Generated-CAZAC，简称为CG-CAZAC)序列中其中一条基序列，序列s2为s1序列在频域的相位旋转(等价于时域序列的循环移位)，也即：
Figure PCTCN2017075850-appb-000003
式中，k为循环移位量。在上述实施例中，s2为s1序列在频域相位旋转k＝6后的序列。
对LTE的12长的序列进行研究发现，基序列及其循环移位量为 2,4,6,8,10的序列，有2个位置上的元素取值是相同的，所述2个元素分别为n＝0和6；具体如下表3所示。
n s1 s2(k＝2) s3(k＝4) s4(k＝6) s5(k＝8) s6(k＝10)
0 0.7071-0.7071i 0.7071-0.7071i 0.7071-0.7071i 0.7071-0.7071i 0.7071-0.7071i 0.7071-0.7071i
1 0.7071+0.7071i -0.7071-0.7071i -0.9659+0.2588i -0.7071-0.7071i 0.2588-0.9659i 0.9659-0.2588i
2 -0.7071+0.7071i -0.7071+0.7071i 0.9659+0.2588i -0.7071+0.7071i -0.2588-0.9659i 0.9659+0.2588i
3 -0.7071-0.7071i 0.7071+0.7071i -0.7071-0.7071i 0.7071+0.7071i -0.7071-0.7071i 0.7071+0.7071i
4 -0.7071+0.7071i -0.7071+0.7071i -0.2588-0.9659i -0.7071+0.7071i 0.9659+0.2588i -0.2588-0.9659i
5 -0.7071+0.7071i 0.7071-0.7071i 0.9659+0.2588i 0.7071-0.7071i -0.2588-0.9659i -0.9659-0.2588i
6 0.7071+0.7071i 0.7071+0.7071i 0.7071+0.7071i 0.7071+0.7071i 0.7071+0.7071i 0.7071+0.7071i
7 0.7071+0.7071i -0.7071-0.7071i -0.9659+0.2588i -0.7071-0.7071i 0.2588-0.9659i 0.9659-0.2588i
8 -0.7071+0.7071i -0.7071+0.7071i 0.9659+0.2588i -0.7071+0.7071i -0.2588-0.9659i 0.9659+0.2588i
9 0.7071+0.7071i -0.7071-0.7071i 0.7071+0.7071i -0.7071-0.7071i 0.7071+0.7071i -0.7071-0.7071i
10 -0.7071-0.7071i -0.7071-0.7071i 0.9659-0.2588i -0.7071-0.7071i -0.2588+0.9659i 0.9659-0.2588i
11 -0.7071+0.7071i 0.7071-0.7071i 0.9659+0.2588i 0.7071-0.7071i -0.2588-0.9659i -0.9659-0.2588i
表3
基序列及其循环移位量为3,6,9的序列，有3个位置上的元素取值是相同的，所述3个元素分别为n＝0,4,8，具体如表4所示。
n s1 s2(k＝3) s3(k＝6) s4(k＝9)
0 0.7071-0.7071i 0.7071-0.7071i 0.7071-0.7071i 0.7071-0.7071i
1 0.7071+0.7071i -0.7071+0.7071i -0.7071-0.7071i 0.7071-0.7071i
2 -0.7071+0.7071i 0.7071-0.7071i -0.7071+0.7071i 0.7071-0.7071i
3 -0.7071-0.7071i -0.7071+0.7071i 0.7071+0.7071i 0.7071-0.7071i
4 -0.7071+0.7071i -0.7071+0.7071i -0.7071+0.7071i -0.7071+0.7071i
5 -0.7071+0.7071i -0.7071-0.7071i 0.7071-0.7071i 0.7071+0.7071i
6 0.7071+0.7071i -0.7071-0.7071i 0.7071+0.7071i -0.7071-0.7071i
7 0.7071+0.7071i 0.7071-0.7071i -0.7071-0.7071i -0.7071+0.7071i
8 -0.7071+0.7071i -0.7071+0.7071i -0.7071+0.7071i -0.7071+0.7071i
9 0.7071+0.7071i -0.7071+0.7071i -0.7071-0.7071i 0.7071-0.7071i
10 -0.7071-0.7071i 0.7071+0.7071i -0.7071-0.7071i 0.7071+0.7071i
11 -0.7071+0.7071i 0.7071+0.7071i 0.7071-0.7071i -0.7071-0.7071i
表4
上述关于基序列以及其循环移位序列的性质可以进行推广：
LTE的CG-CAZAC基序列及其循环移位量为k1,k2,k3,k4,…的序列，有k个位置上的元素取值是相同的，其中k为{k1,k2,k3,k4,…}的最大公约数，所述k个元素分别对应n＝[0:N/k:N]的序列元素，也就是从0开始，以N/k为间隔取值。
上述的表3和表4均满足上述规律。
对于表3，CG-CAZAC基序列以及循环移位量为{2,4,6,8,10}的序列， 由于{2,4,6,8,10}的最大公约数为2，因此，所述序列有2个位置上的元素取值相同，所述的2个元素分别对应n＝0，6(6＝12/2)的序列元素；
对于表4，CG-CAZAC基序列以及循环移位量为{3,6,9}的序列，由于{3,6,9}的最大公约数为3，因此，所述序列有3个位置上的元素取值相同，所述的3个元素分别对应n＝0，4(4＝12/3)，8的序列元素；
上述规律同样可以扩展到长度为24的CG-CAZAC序列。
不失一般性，当N条预定义的序列由同一序列及其经过时域循环移位，或者频域相位旋转后得到的序列构成时，所述N条预定义序列具有但并不限于以下特征：
设所述N条预定义序列任意两条序列之间的相对循环移位量或相位旋转量的最小值为α，则所述N条预定义的序列在频域上有X个位置对应的元素相同，其中X为所有满足等式
Figure PCTCN2017075850-appb-000004
的n的个数，y为大于等于0的整数，n＝0,1,2,…,L-1,L为序列的长度，0＜α＜L，2≤N＜L。
对于上述的表2，序列s1和s2的相对循环移位量为6，也即α＝6，序列长度L＝12。
对于n＝0,1,2,…,11，其中满足
Figure PCTCN2017075850-appb-000005
有以下情况：
n＝0,y＝0
n＝2,y＝1
n＝4,y＝2
n＝6,y＝3
n＝8,y＝4
n＝10,y＝5
也即有6个n满足上述等式，因而s1和s2有6个位置上的元素是相等的。
对于上述的表3，序列s1,s2,s3,s4,s5,s6任意两条序列的相对循环移位量的最小值为2，也即α＝2，序列长度为L＝12。
对于n＝0,1,2,…,11，其中满足
Figure PCTCN2017075850-appb-000006
有以下情况：
n＝0,y＝0
n＝6,y＝1
也即有2个n满足上述等式，因而s1,s2,s3,s4,s5,s6有2个位置上的元素是相等的。
对于上述的表4，序列s1,s2,s3,s4任意两条序列的相对循环移位量的最小值为3，也即α＝3，序列长度为L＝12。
对于n＝0,1,2,…,11，其中满足
Figure PCTCN2017075850-appb-000007
有以下情况：
n＝0,y＝0
n＝4,y＝1
n＝8,y＝2
也即有3个n满足上述等式，因而s1,s2,s3,s4有3个位置上的元素是相等的。
优选实施例2：
当确定的N条可用参考信号对应的序列采用如实施例1所述的方式得到时，且当所述信息为上行控制信息：
(1)当所述上行控制信息为1比特的HARQ-ACK时且当前发送的HARQ-ACK为ACK时，则发送的参考信号对应的序列为序列1，否则，则发送的参考信号对应的序列为序列2，N＝2。
(2)当所述上行控制信息为2比特的HARQ-ACK时且当前发送的HARQ-ACK为{ACK，ACK}时，则发送的参考信号对应的序列为序列1；
(3)当所述上行控制信息为2比特的HARQ-ACK时且当前发送的HARQ-ACK为{ACK，NACK}时，则发送的参考信号对应的序列为序列2；。
(4)当所述上行控制信息为2比特的HARQ-ACK时且当前发送的HARQ-ACK为{NACK，ACK}时，则发送的参考信号对应的序列为序列3；
(5)当所述上行控制信息为2比特的HARQ-ACK时且当前发送的HARQ-ACK为{NACK，NACK}时，则发送的参考信号对应的序列为序列4；所述N＝4。
N的取值优选为2或4。那么通过参考信号的序列选择，可以额外或重复携带1或2比特的信息。
优选实施例3：
图6为根据本发明优选实施例3的发送信息示意图，如图6所示，在该示意图中，根据发送的HARQ-ACK信息，确定参考信号对应的序列，同时，需要对所述发送的HARQ-ACK信息进行处理，其中所述的处理过程包括调制，以及频域扩展，这里的频域扩展与现有LTE相同，利用频域的序列对调制后的HARQ-ACK符号进行频域扩展即可。然后，将确定的参考信号对应的序列映射到预定义的时频资源中去，这里假定参考信号映射到TTI的第一个时域符号，将经过处理的HARQ-ACK映射到预定义的时频资源中去，这里假定HARQ-ACK信息映射到TTI的第二个时域符号。交换参考信号和信息符号的时域符号也是可以的。这种方式适用于短TTI至少包含2个时域符号的场景。
图7为根据本发明优选实施例3的另一种发送信息示意图，在该示意图中，根据发送的HARQ-ACK信息，确定参考信号对应的序列，然后，将确定的参考信号对应的序列映射到预定义的时频资源中去，这里假定参考信号映射到TTI的所有时域符号上去。这种方式，适用于任意TTI长度的场景，包括1个时域符号，图8为根据本发明优选实施例3的又一种发送信息示意图，图8所体现的流程与图6，图7类型，此处不再赘述。
上述实施例中给出的是HARQ-ACK为1或2比特的场景，当HARQ-ACK的比特数大于2时，可以把HARQ-ACK的前1或2比特信息，采用相同的方式通过参考信号对应的序列的不同来指示，而其余的 HARQ-ACK信息，则通过编码，调制等处理后，直接将调制符号映射到相应的时域符号中去。其中编码处理中，编码后的比特长度根据信息映射的时频资源来确定。
需要说明的是，本发明实施例中的控制信息可以是上行控制信息，可以是上行业务信息，也可以是上行控制信息和上行业务信息两者同时存在，以下仅以上行控制信息为例，其他情况执行过程类似，此处不再赘述，本发明实施例上述提及的技术方案实际上是通过将信息携带在参考信号中进行发送的技术方案，具体包括部分信息携带在参考信号中，还包括全部信息携带于参考信号中。
综上所述，本发明实施例的技术方案达到了以下技术效果：解决了相关技术中，随着TTI符号数的降低，参考信号的开销增大，进而导致物理上行信道发送有效数据(相当于控制信息)的可用资源降低的问题，进而提高了传输有效数据的可用资源。
在另外一个实施例中，还提供了一种软件，该软件用于执行上述实施例及优选实施方式中描述的技术方案。
在另外一个实施例中，还提供了一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的信息发送方法。该计算机存储介质包括但不限于：光盘、软盘、硬盘、可擦写存储器等。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的对象在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这 些过程、方法、产品或设备固有的其它步骤或单元。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上上述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
本发明实施例的技术方案，根据物理上行信道上待发送的信息从N条序列中选择出参考信号所对应的序列，进而实现了根据参考信号的序列来发送上述信息的技术方案，解决了相关技术中，随着TTI符号数的降低，参考信号的开销增大，进而导致物理上行信道发送有效数据(相当于上述物理上行信道上待发送的信息)的可用资源降低的问题，进而提高了传输有效数据的可用资源。

Claims (17)

  1. 一种信息发送方法，包括：
    根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；
    将确定的所述参考信号对应的序列以及所述信息映射到时频资源，并在所述时频资源上发送所述参考信号和所述信息。
  2. 根据权利要求1所述的方法，其中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，包括：
    在所述N条预定义的序列在频域生成时，所述N条预定义的序列在预先确定的位置上具有相同的非零取值；
    当所述N条预定义的序列在时域生成时，所述N条预定义的序列经过离散傅里叶变换后的序列在预先确定的位置上具有相同的非零取值。
  3. 根据权利要求1所述的方法，其中，根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，包括：
    根据信息的比特取值从N条预定义的序列中选择出待发送的参考信号所对应的序列。
  4. 根据权利要求1所述的方法，其中，所述N条预定义的序列的性质包括以下之一：在频域上具有恒幅性质；在时域上具有恒幅性质，在频域和时域同时具有恒幅性质。
  5. 根据权利要求1所述的方法，其中，所述时频资源包括：时域资源，频域资源；其中，所述时域资源包括：K个时域符号，其中，1≤K≤7且K为正整数；所述频域资源包括：P个子载波，其中，P为以下数目之一的正整数倍：2、3、4、6、12。
  6. 根据权利要求5所述的方法，其中，所述K个时域符号的频域资源 相同，或者在所述频域资源中，采用跳频结构占用不同的子载波位置。
  7. 根据权利要求5所述的方法，其中，在所述时频资源上发送所述参考信号和所述信息，包括：
    当所述参考信号所对应的序列在频域资源具有恒幅性质时，将所述参考信号所对应的序列映射到P个子载波上，并进行逆离散傅里叶变换后发送所述参考信号和所述信息；
    当所述参考信号所对应的序列在时域资源具有恒幅性质时，将所述参考信号所对应的序列进行P点的离散傅里叶变换，将变换后的序列映射到P个子载波或P个子载波的子集上，进行逆离散傅里叶变换后发送所述参考信号和所述信息。
  8. 根据权利要求5所述的方法，其中，在所述时频资源上发送所述参考信号包括：
    在所述K个时域符号中的至少一个符号上，发送所述参考信号。
  9. 根据权利要求8所述的方法，其中，在所述K个时域符号中的多个时域符号上发送所述参考信号时，不同的时域符号发送不同的参考信号。
  10. 根据权利要求5所述的方法，其中，当时频资源包含两个时域符号时，在所述时频资源上发送所述参考信号和所述信息，包括：
    在第一个时域符号上发送所述参考信号，在第二个时域符号上发送所述信息；或者，
    在第一个时域符号上发送所述信息，在第二个时域符号上发送所述参考信号；或者，
    在所述两个时域符号上均发送所述参考信号，其中，该参考信号携带有所述信息。
  11. 根据权利要求10所述的方法，其中，在所述两个时域符号上发送所述参考信号时，所述两个时域符号占用的频域子载波位置不同。
  12. 根据权利要求1至11任一项所述的方法，其中，所述信息包括：上行控制信息；上行业务信息；上行控制信息和上行业务信息。
  13. 根据权利要求1至11任一项所述的方法，其中，所述预先确定的位置包括：序列中的一个符号，或者序列中等间隔设置的多个符号。
  14. 根据权利要求1所述的方法，其中，当所述N条预定义的序列包括：同一序列经过不同的时域循环移位得到的序列，或者同一序列经过不同的频域相位旋转得到的序列时，所述N条预定义序列具有但并不限于以下特征：
    所述N条预定义的序列在频域上有X个位置对应的元素相同，其中，X为满足等式
    Figure PCTCN2017075850-appb-100001
    的n的个数，α为所述N条预定义序列中任意两条序列之间的相对循环移位量或相位旋转量，y为大于或者等于0的整数，n为取自集合[0,L-1]的整数，L为预定义的序列的长度，0＜α＜L，N为大于等于2，且小于L的正整数。
  15. 一种信息发送装置，包括：
    确定模块，配置为根据物理上行信道上待发送的信息，从N条预定义的序列中确定待发送的参考信号所对应的序列，其中，所述N条预定义的序列在预先确定的位置上具有相同的非零取值，N为大于或等于2的整数；
    映射模块，配置为将确定的所述参考信号对应的序列以及所述信息映射到时频资源；
    发送模块，配置为所述时频资源上发送所述参考信号和所述信息。
  16. 根据权利要求15所述的装置，其中，所述确定模块，包括：
    获取单元，配置为获取所述信息的比特数及信息类型；
    选择单元，配置为根据所述比特数和信息类型从N条预定义的序列中选择出待发送的参考信号所对应的序列。
  17. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执 行指令，该计算机可执行指令配置为执行权利要求1-14任一项所述的信息发送方法。
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