WO2018202103A1 - 一种参考信号图样的传输方法及其装置 - Google Patents

一种参考信号图样的传输方法及其装置 Download PDF

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Publication number
WO2018202103A1
WO2018202103A1 PCT/CN2018/085515 CN2018085515W WO2018202103A1 WO 2018202103 A1 WO2018202103 A1 WO 2018202103A1 CN 2018085515 W CN2018085515 W CN 2018085515W WO 2018202103 A1 WO2018202103 A1 WO 2018202103A1
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Prior art keywords
pattern
csi
resource
occupies
frequency domain
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PCT/CN2018/085515
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English (en)
French (fr)
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武露
刘永
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华为技术有限公司
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Priority to EP18794199.2A priority Critical patent/EP3641174B1/en
Priority to BR112019023162-5A priority patent/BR112019023162A2/pt
Publication of WO2018202103A1 publication Critical patent/WO2018202103A1/zh
Priority to US16/674,903 priority patent/US11381436B2/en

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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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • 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
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    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0067—Allocation algorithms which involve graph matching
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
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    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
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    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for transmitting a reference signal pattern.
  • the frame structure in the Long Term Evolution (LTE) system can be seen as shown in FIG. 1.
  • CP Cyclic Prefix
  • OFDM Orthogonal Frequency Division Multiplexing
  • the system allocates resources by allocating resource blocks (RBs), and the number of allocated RBs is different for different bandwidths.
  • a 1 RB includes a time domain resource occupied by a slot in a time dimension, and a resource occupied by 12 subcarriers is usually included in a frequency dimension, and a subcarrier spacing is 15 kHz.
  • a resource occupied by one subcarrier on one OFDM symbol is called a resource.
  • Resource Element (RE) is a resource occupied by one subcarrier on one OFDM symbol.
  • the terminal device may perform measurement according to the resource configuration information of the channel state information-reference signal (CSI-RS) sent by the base station, acquire channel state information (CSI), and The base station feeds back at least one of a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI).
  • CSI-RS can support up to eight logical ports.
  • the number of ports that the CSI-RS can support is more than eight.
  • the design of the CSI-RS pattern in the LTE system is not applicable to the 5G, CSI-RS.
  • the design of the pattern is one of the key issues of 5G.
  • the technical problem to be solved by the embodiments of the present invention is to provide a transmission method and device for a reference signal pattern, which can implement a pattern design of channel state information reference signal resources in a 5G system.
  • the network device obtains a pattern of the CSI-RS resource according to the number of symbols N; the network device sends configuration information corresponding to the pattern of the CSI-RS resource to the terminal device; the terminal device Receiving configuration information corresponding to the pattern of the CSI-RS resource sent by the network device, where the terminal device determines the pattern of the CSI-RS resource according to the configuration information;
  • N 1 resource element RE in the time domain, and occupies at least 4 consecutive REs in the frequency domain;
  • the pattern of the CSI-RS resource occupies 2 consecutive REs in the time domain, and occupies at least 2 consecutive REs in the frequency domain;
  • the pattern of the CSI-RS resource occupies 4 consecutive REs in the time domain, and occupies at least 2 consecutive REs in the frequency domain.
  • the pattern of the CSI-RS resources is obtained according to the number of symbols N, thereby implementing the pattern design of the channel state information reference signal resources in the 5G system.
  • N Through different values of N, different CSI-RS resource patterns are obtained, thereby flexibly implementing the design of CSI-RS resources.
  • the first basic pattern (4, 1) is used for frequency domain splicing to obtain a pattern of the CSI-RS resource, and the first basic pattern (4) 1) occupies 1 RE in the time domain and 4 consecutive REs in the frequency domain.
  • the second basic pattern (2, 2) is used for frequency domain splicing to obtain a pattern of the CSI-RS resource, and the second basic pattern (2) 2) occupy 2 consecutive REs in the time domain and occupy 2 consecutive REs in the frequency domain.
  • the second basic pattern (2, 4) is used for frequency domain splicing to obtain a pattern of the CSI-RS resource, and the first basic pattern (2) 4) occupy 2 consecutive REs in the time domain and occupy 4 consecutive REs in the frequency domain.
  • an embodiment of the present invention provides a network device, where the network device has a function of implementing network device behavior in the method in the first aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the processor is further configured to obtain a pattern of the CSI-RS resource according to the number of symbols N;
  • the principle and the beneficial effects of the network device for solving the problem can be referred to the method and the beneficial effects of the first aspect.
  • the network device refer to the network device side method of the first aspect. The implementation, repetitions will not be repeated.
  • an embodiment of the present invention provides a terminal device, where the terminal device has a function of implementing a behavior of a terminal device in the method in the first aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal device includes a receiving unit and a processing unit, where the receiving unit is configured to receive configuration information corresponding to a pattern of CSI-RS resources sent by the network device, where the processing unit is configured to: Determining a pattern of the CSI-RS resource according to the configuration information.
  • the terminal device includes a processor and a transceiver, where the transceiver is configured to receive configuration information corresponding to a pattern of CSI-RS resources sent by the network device, where the processor is configured to: Determining a pattern of the CSI-RS resource according to the configuration information.
  • the principle and the beneficial effects of the terminal device for solving the problem can be referred to the method and the beneficial effects of the first aspect.
  • the terminal device refer to the terminal device side method of the first aspect. The implementation, repetitions will not be repeated.
  • an embodiment of the present invention provides a computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to perform the method of the network device according to the first aspect.
  • an embodiment of the present invention provides a computer readable storage medium, including instructions, when executed on a computer, causing a computer to perform the method on the terminal device side according to the first aspect.
  • the pattern of the CSI-RS resources is obtained according to the number of symbols N, thereby implementing the pattern design of the channel state information reference signal resources in the 5G system.
  • N Through different values of N, different CSI-RS resource patterns are obtained, thereby flexibly implementing the design of CSI-RS resources.
  • 1 is a frame structure in an LTE system
  • FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • FIG. 3 is a diagram showing an example of a scheme for splicing based on a basic pattern (2, 1);
  • FIG. 4 is a schematic diagram of three basic patterns provided by an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for transmitting a reference signal pattern according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of a logical structure of a network device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of an entity of a network device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of a logical structure of a terminal device according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a physical structure of a terminal device according to an embodiment of the present invention.
  • the embodiment of the present invention can be applied to a wireless communication system.
  • the wireless communication system is generally composed of a cell.
  • Each cell includes a base station (BS), and the base station provides communication services to multiple terminal devices, where the base station is connected to the core network device. as shown in picture 2.
  • the base station includes a baseband unit (BBU) and a remote radio unit (RRU).
  • BBU baseband unit
  • RRU remote radio unit
  • the BBU and the RRU can be placed in different places, for example, the RRU is pulled away, placed in an open area from high traffic, and the BBU is placed in the central computer room.
  • BBUs and RRUs can also be placed in the same room.
  • the BBU and RRU can also be different parts under one rack.
  • the wireless communication system mentioned in the embodiments of the present invention includes, but is not limited to, a Narrow Band-Internet of Things (NB-IoT), a Global System for Mobile Communications (GSM), Enhanced Data Rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Synchronization Code Time Division-Synchronization Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE), 5G systems, and future mobile communication systems.
  • NB-IoT Narrow Band-Internet of Things
  • GSM Global System for Mobile Communications
  • EDGE Enhanced Data Rate for GSM Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • TD-SCDMA Time Division Synchronization Code Time Division-Synchronization Code Division Multiple Access
  • LTE Long Term Evolution
  • 5G systems and future mobile communication systems.
  • the base station is a device deployed in a radio access network to provide a wireless communication function for the terminal device.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, transmission access point (TRP), and the like.
  • the names of devices with base station functions may be different, for example, in an LTE system, called an evolved Node B (evolvedNodeB, eNB or eNodeB), in the third generation.
  • eNB evolved Node B
  • 3G 3rd Generation
  • the above-mentioned devices for providing wireless communication functions for terminal devices are collectively referred to as network devices.
  • the terminal device involved in the embodiments of the present invention may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem.
  • the terminal device may also be referred to as a mobile station (MS), a terminal (Terminal), and may also include a subscriber unit, a cellular phone, a smart phone, a wireless data card, and an individual.
  • MS mobile station
  • Terminal Terminal
  • PDA Personal Digital Assistant
  • tablet computers wireless modems
  • handsets laptop computers
  • MTC Machine Type Communication
  • an X-port CSI-RS resource is formed by splicing one or more basic patterns, wherein the basic pattern (Y, Z) is a continuous Y REs in the frequency domain within one RB. And consisting of consecutive Z REs in the time domain.
  • a 2-port CSI-RS pattern consists of two consecutive REs on one RB in one OFDM symbol, expressed as (2, 1).
  • a 4-port CSI-RS pattern has two forms, one is composed of four consecutive REs on one RB in one symbol, namely (4, 1); the other is composed of two consecutive frequencies on one RB.
  • the domain RE consists of two consecutive time domain REs, namely (2, 2).
  • the CSI-RS resources for any one port number are spliced by the basic pattern (2, 1). Since there are 12 subcarriers in one RB, the basic pattern(2,1) has 6 frequency domain positions in one RB, as shown in Fig. 3, taking four consecutive symbols as an example, each shadow represents a basic pattern. The time-frequency position that appears. Defining a 6-bit sequence indicates these 6 frequency domain locations, and a 1 indicates the basic pattern occupying the location. Then, the frequency domain location of any CSI-RS resource can be indicated by the 6-bit, and the time domain location needs another K-bit sequence (K indicates the number of possible OFDM symbols of the CSI-RS), and is 1 Indicates that its corresponding OFDM symbol is occupied.
  • K indicates the number of possible OFDM symbols of the CSI-RS
  • the CSI-RS resources of any one port number are indicated by a sequence of (6+K) bits.
  • This scheme can support flexible various combinations because it is spliced by the minimum tiling unit 2RE, but the disadvantage is that the signaling overhead is large.
  • the 4-port CSI-RS pattern is (4, 1) and (2, 2), which is composed of continuous REs in the frequency domain/time, and is not arbitrarily combined by the basic pattern (2, 1),
  • the scheme of splicing by the basic pattern (2, 1) introduces redundant basic pattern and signaling overhead.
  • the embodiment of the present invention provides three basic patterns (4, 1), (2, 2), (2, 4) for generating a CSI-RS resource pattern, which can be seen in the figure.
  • the basic pattern (4, 1) has 3 positions in 1 RB, 1 symbol, and a position where the shadow is located can represent 1 basic pattern (4, 1); basic pattern (2) 2)
  • the basic pattern (2, 4) is in 1 RB, 4
  • the pattern of the CSI-RS resource is obtained by using the basic pattern (4, 1) or (2, 2) or (2, 4), and the pattern design of the CSI-RS resource can be flexibly implemented, and the basic design can be avoided.
  • Pattern(2,1) implements the redundant basic pattern introduced by the splicing scheme and saves signaling overhead.
  • the method for transmitting the reference signal pattern provided by the embodiment of the present invention is a method for generating a pattern of channel state information reference signals, which is applied in a 5G system, and is mainly used in a 5G system, and the number of ports supported by the channel state information reference signal is greater than or equal to 4 Scene.
  • the pattern of the CSI-RS resources corresponding to the different number of symbols is obtained according to the value of N.
  • the network device may select one of the multiple CSI-RS resource patterns for resource configuration and send the resource configuration information to the terminal device, and the terminal device configures the resource according to the resource configuration.
  • the information is measured, the CSI is obtained, and at least one of parameters such as CQI, RI, and PMI is fed back to the network device.
  • the transmission method and device for the reference signal pattern provided by the embodiment of the present invention can implement the design of the CSI-RS resource in the 5G system. Through different values of N, different CSI-RS resource patterns are obtained, thereby flexibly implementing the design of CSI-RS resources.
  • FIG. 5 is a method for transmitting a reference signal pattern according to an embodiment of the present invention, which is received from a perspective of interaction between a network device and a terminal device, where the method includes but is not limited to the following steps:
  • Step S201 The network device determines the number of symbols N occupied by the channel state information reference signal CSI-RS resource;
  • N 1, indicating that the CSI-RS resource occupies 1 symbol;
  • N 2, indicating that the CSI-RS resource occupies 2 symbols; and
  • N 4, indicating that the CSI-RS resource occupies 4 symbols.
  • the network device may select one N from at least one N and configure the selected N in resource configuration information for the terminal.
  • the device can learn the number of symbols occupied by the CSI-RS resource.
  • the method for the network device to select one N from at least one N is not limited in the embodiment of the present invention.
  • the number of symbols occupied by the CSI-RS resource may be the number of occupied OFDM symbols.
  • Step S202 The network device obtains a pattern of the CSI-RS resource according to the number of symbols N.
  • the network device may perform frequency domain splicing by using the first basic pattern (4, 1) to obtain the CSI-RS resource.
  • Pattern Since the first basic pattern (4, 1) indicates that 1 RE is occupied in the time domain and 4 REs are occupied in the frequency domain, the pattern of the CSI-RS resource obtained by frequency domain splicing is in the time domain. It occupies 1 RE and occupies at least 4 consecutive REs in the frequency domain.
  • a pattern of 8-port CSI-RS resources occupies 1 RE in the time domain and 8 consecutive REs in the frequency domain.
  • the network device may also be designed in other manners to obtain a pattern of the CSI-RS resources occupying 1 RE in the time domain and occupying at least 4 consecutive REs in the frequency domain.
  • the network device may perform frequency domain splicing by using the second basic pattern (2, 2) to obtain a pattern of the CSI-RS resource.
  • the second basic pattern (2, 2) indicates that 2 REs are occupied in the time domain and 2 REs are occupied in the frequency domain
  • the pattern of the CSI-RS resources obtained by frequency domain splicing is in the time domain. It occupies 2 REs and occupies at least 2 consecutive REs in the frequency domain.
  • a pattern of 8-port CSI-RS resources occupies 2 REs in the time domain and 4 consecutive REs in the frequency domain.
  • the network device may also be designed in other manners to obtain a pattern of the CSI-RS resources occupying 2 REs in the time domain and occupying at least 2 consecutive REs in the frequency domain.
  • the network device may perform frequency domain splicing by using a third basic pattern (2, 4) to obtain a pattern of the CSI-RS resource.
  • the third basic pattern (2, 4) indicates that 2 REs are occupied in the time domain and 4 REs are occupied in the frequency domain
  • the pattern of the CSI-RS resources obtained by frequency domain splicing is in the time domain. Occupying 4 REs, occupying at least 2 consecutive REs in the frequency domain.
  • a pattern of 16-port CSI-RS resources occupies 4 REs in the time domain and 4 consecutive REs in the frequency domain.
  • the network device may also be designed in other manners to obtain a pattern of the CSI-RS resources occupying 4 REs in the time domain and occupying at least 2 consecutive REs in the frequency domain.
  • Step S203 The network device sends configuration information corresponding to the pattern of the CSI-RS resource to the terminal device.
  • Step S204 The terminal device receives configuration information corresponding to a pattern of CSI-RS resources sent by the network device.
  • Step S205 The terminal device determines a pattern of the CSI-RS resource according to the configuration information.
  • the terminal device determines a pattern of the CSI-RS resource according to the configuration information, so as to acquire the CSI-RS resource, so as to perform measurement.
  • the network device when determining the number N of symbols occupied by the CSI-RS resources, the network device designs according to the value of N, and obtains a pattern of CSI-RS resources corresponding to different symbol numbers, which can be implemented.
  • the pattern of CSI-RS resources obtained by the basic pattern (4, 1) or (2, 2) or (2, 4) not only flexibly realizes the pattern design of CSI-RS resources, but also avoids the basic pattern (2, 1) Redundant basic pattern introduced by the splicing scheme and saves signaling overhead.
  • the number of symbols occupied by the CSI-RS resource is 1 or 2 or 4, and in actual applications, the number of symbols that may appear in the CSI-RS resource is K.
  • the extension can be based on the case where the number of symbols is 1 or 2 or 4.
  • the following is a description of the pattern design scheme for 8-port CSI-RS resources, 12-port CSI-RS resources, 16-port CSI-RS resources, and 32-port CSI-RS resources.
  • the basic pattern (4, 1) can be used for frequency domain splicing.
  • the basic pattern(4,1) has three types of positions that can appear in one RB and one symbol. Referring to FIG. 4, the pattern of the 8-port CSI-RS resource in one symbol can be obtained from the three basic patterns. Any two of them are spliced together, so the pattern of 8-port CSI-RS resources in one symbol is common.
  • a location where the shadow is located may represent a pattern of an 8-port CSI-RS resource.
  • the basic pattern (4, 1) occupying the subcarrier number 0-3 in FIG. 4 be the basic pattern (a), so that the basic pattern (4, 1) occupying the subcarrier number 4-7 in FIG. 4 is the basic pattern (b). ), the basic pattern (4, 1) occupying the subcarrier number 8-11 in FIG. 4 is the basic pattern (c).
  • the pattern of the 8-port CSI-RS resource shown in (A) of FIG. 6a occupies 1 RE in the time domain, and occupies 8 consecutive REs in the frequency domain, by the adjacent basic pattern (b) and the basic pattern ( c) splicing.
  • the pattern of the 8-port CSI-RS resource shown in (B) of FIG. 6a occupies 1 RE in the time domain, and occupies 8 consecutive REs in the frequency domain, by the adjacent basic pattern (a) and the basic pattern ( b) splicing.
  • the pattern of the 8-port CSI-RS resource shown in (C) of FIG. 6a occupies 1 RE in the time domain, and occupies 4 consecutive REs and 4 consecutive REs in the frequency domain, which are not adjacent.
  • the basic pattern (a) and the basic pattern (c) are spliced together.
  • the pattern of the 8-port CSI-RS resources in the K symbols is common.
  • the basic pattern (2, 2) can be used for frequency domain splicing.
  • the basic pattern (2, 2) has 6 positions in 1 RB and 2 symbols. See Figure 4, then the pattern of the 8-port CSI-RS resource in the 2 symbols can be composed of these 6 basic patterns. Any two of the two are spliced together, so the pattern of the 8-port CSI-RS resource in the two symbols is common.
  • the 8-port CSI-RS resource shown in FIG. 6b two types of 15 types are listed, and a position where the shadow is located may represent a pattern of an 8-port CSI-RS resource.
  • the basic pattern (2, 2) occupying the subcarrier number 0-1 in FIG. 4 be the basic pattern (a), so that the basic pattern (2, 2) occupying the subcarrier number 2-3 in FIG. 4 is the basic pattern (b). ), the basic pattern (2, 2) occupying the subcarrier number 4-5 in FIG. 4 is the basic pattern (c), so that the basic pattern (2, 2) occupying the subcarrier number 6-7 in FIG. 4 is the basic pattern. (d), the basic pattern (2, 2) occupying the subcarrier number 8-9 in FIG. 4 is the basic pattern (e), so that the basic pattern (2, 2) occupying the subcarrier number 10-11 in FIG. 4 is Basic pattern(f).
  • the pattern of the 8-port CSI-RS resource shown in (A) of FIG. 6b occupies 2 REs in the time domain, occupies 4 consecutive REs in the frequency domain, and is adjacent to the basic pattern (f) and pattern (e).
  • the splicing is formed;
  • the pattern of the 8-port CSI-RS resource shown in (B) of FIG. 6b occupies 2 REs in the time domain, and occupies 2 consecutive REs and 2 consecutive REs in the frequency domain. It is composed of non-adjacent basic pattern (f) and pattern (d).
  • the pattern of the 8-port CSI-RS resources in the K symbols is common.
  • the basic pattern (4, 1) can be used for frequency domain splicing.
  • the basic pattern(4,1) has three types of positions that can appear in one RB and one symbol. Referring to FIG. 4, the pattern of the 12-port CSI-RS resource in one symbol can be obtained from the three basic patterns. The splicing is performed. Therefore, there are one type of 12-port CSI-RS resources in one symbol. See the example of the 12-port CSI-RS resource shown in Figure 7a.
  • the number of symbols that may appear in the 12-port CSI-RS resource is K, there are K types of 12-port CSI-RS resources in the K symbols.
  • the basic pattern (2, 2) can be used for frequency domain splicing.
  • the basic pattern(2,2) has 6 positions in 1 RB and 2 symbols. See Figure 4, then the pattern of 12-port CSI-RS resources in 2 symbols can be obtained from these 6 basic patterns. Any three of them are spliced together, so the pattern of the 12-port CSI-RS resources in the two symbols is common.
  • the pattern of the 12-port CSI-RS resource shown in FIG. 7b three types of 20 types are listed, and a position where the shadow is located may represent a pattern of a 12-port CSI-RS resource.
  • the basic pattern (2, 2) occupying the subcarrier number 0-1 in FIG. 4 be the basic pattern (a), so that the basic pattern (2, 2) occupying the subcarrier number 2-3 in FIG. 4 is the basic pattern (b). ), the basic pattern (2, 2) occupying the subcarrier number 4-5 in FIG. 4 is the basic pattern (c), so that the basic pattern (2, 2) occupying the subcarrier number 6-7 in FIG. 4 is the basic pattern. (d), the basic pattern (2, 2) occupying the subcarrier number 8-9 in FIG. 4 is the basic pattern (e), so that the basic pattern (2, 2) occupying the subcarrier number 10-11 in FIG. 4 is Basic pattern(f).
  • the pattern of the 12-port CSI-RS resource shown in (A) of FIG. 7b occupies 2 REs in the time domain, and occupies 6 consecutive REs in the frequency domain, by the adjacent basic pattern (f), the basic pattern ( e) is spliced with the basic pattern (d); the pattern of the 12-port CSI-RS resource shown in (B) of Figure 7b occupies 2 REs in the time domain and 4 consecutive REs and 2 in the frequency domain. Consecutive REs are formed by splicing basic pattern (c), adjacent basic pattern (f) and basic pattern (e); the pattern of 12-port CSI-RS resources shown in (C) of Figure 7b is in the time domain. It occupies 2 REs and occupies three consecutive REs in the frequency domain. It is composed of three non-adjacent basic pattern (f), basic pattern (d) and basic pattern (b).
  • the pattern of the 12-port CSI-RS resources in the K symbols is common.
  • the basic pattern (2, 2) can be used for frequency domain splicing.
  • the basic pattern(2,2) has 6 positions in 1 RB and 2 symbols. See Figure 4, then the pattern of 16-port CSI-RS resources in 2 symbols can be obtained from these 6 basic patterns. Any four of the spliced, so the pattern of the 16-port CSI-RS resources in the two symbols is common.
  • the pattern of the 16-port CSI-RS resource shown in FIG. 8a four types of 20 types are listed, and a position where the shadow is located may represent a pattern of a 16-port CSI-RS resource.
  • the basic pattern (2, 2) occupying the subcarrier number 0-1 in FIG. 4 be the basic pattern (a), so that the basic pattern (2, 2) occupying the subcarrier number 2-3 in FIG. 4 is the basic pattern (b). ), the basic pattern (2, 2) occupying the subcarrier number 4-5 in FIG. 4 is the basic pattern (c), so that the basic pattern (2, 2) occupying the subcarrier number 6-7 in FIG. 4 is the basic pattern. (d), the basic pattern (2, 2) occupying the subcarrier number 8-9 in FIG. 4 is the basic pattern (e), so that the basic pattern (2, 2) occupying the subcarrier number 10-11 in FIG. 4 is Basic pattern(f).
  • the pattern of the 16-port CSI-RS resource shown in (A) of FIG. 8a occupies 2 REs in the time domain, and occupies 8 consecutive REs in the frequency domain, by basic pattern (f), basic pattern (e), The basic pattern(d) and the basic pattern(c) are spliced; the pattern of the 16-port CSI-RS resource shown in (B) of Figure 8a occupies 2 REs in the time domain and 4 consecutives in the frequency domain.
  • the RE and a four consecutive REs are formed by splicing the basic pattern (f), the basic pattern (e), the basic pattern (b), and the basic pattern (a); the 16-port CSI shown in (C) of Fig.
  • the pattern of the RS resource occupies 2 REs in the time domain, occupies 4 consecutive REs and two 2 consecutive REs in the frequency domain, by basic pattern (f), basic pattern (d), basic pattern (b ) and the basic pattern (a) are spliced; the pattern of the 16-port CSI-RS resource shown in (D) of Figure 8a occupies 2 REs in the time domain, and occupies 6 consecutive REs and 2 in the frequency domain.
  • a continuous RE is composed of a basic pattern (f), a basic pattern (c), a basic pattern (b), and a basic pattern (a).
  • the pattern of the 16-port CSI-RS resources in the K symbols is common.
  • the basic pattern (2, 4) can be used for frequency domain splicing.
  • the basic pattern (2, 4) has 6 positions in 1 RB and 4 symbols. See Figure 4, then the pattern of 16-port CSI-RS resources in 4 symbols can be obtained from these 6 basic patterns. Any two of them are spliced together, so the pattern of 16-port CSI-RS resources in 4 symbols is common.
  • the pattern of the 16-port CSI-RS resource shown in FIG. 8b two types of 15 types are listed, and a position where the shadow is located may represent a pattern of a 16-port CSI-RS resource.
  • the basic pattern (2, 4) occupying the subcarrier number 0-1 in FIG. 4 be the basic pattern (a), so that the basic pattern (2, 4) occupying the subcarrier number 2-3 in FIG. 4 is the basic pattern (b). ), the basic pattern (2, 4) occupying the subcarrier number 4-5 in FIG. 4 is the basic pattern (c), so that the basic pattern (2, 4) occupying the subcarrier number 6-7 in FIG. 4 is the basic pattern. (d), the basic pattern (2, 4) occupying the subcarrier number 8-9 in FIG. 4 is the basic pattern (e), so that the basic pattern (2, 4) occupying the subcarrier number 10-11 in FIG. 4 is Basic pattern(f).
  • the pattern of the 16-port CSI-RS resource shown in (A) of FIG. 8b occupies 4 REs in the time domain, and occupies 4 consecutive REs in the frequency domain, by the adjacent basic pattern (f) and the basic pattern ( e) spliced; the pattern of the 16-port CSI-RS resource shown in (B) of Figure 8b occupies 4 REs in the time domain, occupies 2 consecutive REs and 2 consecutive REs in the frequency domain. , is formed by splicing the non-adjacent basic pattern (f) and the basic pattern (d).
  • the pattern of the 16-port CSI-RS resources in the K symbols is common.
  • the basic pattern (2, 4) can be used for frequency domain splicing.
  • the basic pattern (2, 4) has 6 positions in 1 RB and 4 symbols. See Figure 4, then the pattern of 32-port CSI-RS resources in 4 symbols can be obtained from these 6 basic patterns. Any four of the spliced, so the pattern of the 32-port CSI-RS resources in the four symbols is common.
  • the pattern of the 32-port CSI-RS resource shown in FIG. 9 three types of 15 types are listed, and a position where the shadow is located may represent a pattern of a 32-port CSI-RS resource.
  • the basic pattern (2, 4) occupying the subcarrier number 0-1 in FIG. 4 be the basic pattern (a), so that the basic pattern (2, 4) occupying the subcarrier number 2-3 in FIG. 4 is the basic pattern (b). ), the basic pattern (2, 4) occupying the subcarrier number 4-5 in FIG. 4 is the basic pattern (c), so that the basic pattern (2, 4) occupying the subcarrier number 6-7 in FIG. 4 is the basic pattern. (d), the basic pattern (2, 4) occupying the subcarrier number 8-9 in FIG. 4 is the basic pattern (e), so that the basic pattern (2, 4) occupying the subcarrier number 10-11 in FIG. 4 is Basic pattern(f).
  • the pattern of the 32-port CSI-RS resource shown in (A) of FIG. 9 occupies 4 REs in the time domain, and occupies 8 consecutive REs in the frequency domain, by the basic pattern (f), the basic pattern (e), The basic pattern(d) and the basic pattern(c) are concatenated; the pattern of the 32-port CSI-RS resource shown in (B) of Figure 9 occupies 4 REs in the time domain and 4 consecutives in the frequency domain.
  • the RE and a four consecutive REs are formed by splicing the basic pattern (f), the basic pattern (e), the basic pattern (b), and the basic pattern (a); the 32-port CSI shown in (C) of Fig.
  • the pattern of the -RS resource occupies 4 REs in the time domain, and occupies 4 consecutive REs and 2 consecutive REs in the frequency domain, consisting of basic pattern (f), basic pattern (e), and basic pattern ( c) is spliced with the basic pattern (a).
  • the pattern of the 32-port CSI-RS resources in the K symbols is common.
  • frequency pattern splicing can be performed using basic pattern (4, 1) or basic pattern (2, 2). If the basic pattern (4, 1) is used, the pattern of the 4-port CSI-RS resource within one symbol can be any of the three basic patterns (4, 1) shown in FIG. If the basic pattern (2, 2) is used, the pattern of the 4-port CSI-RS resource in the two symbols can be any of the six basic patterns (2, 2) shown in FIG.
  • FIG. 10 is a schematic diagram of a logical structure of a network device according to an embodiment of the present invention.
  • the network device 301 may include a processing unit 3011 and a sending unit 3012.
  • the processing unit 3011 is further configured to obtain a pattern of the CSI-RS resource according to the number of symbols N;
  • the sending unit 3012 is configured to send, to the terminal device, configuration information corresponding to the pattern of the CSI-RS resource;
  • N 1 RE in the time domain, and occupies at least 4 consecutive REs in the frequency domain;
  • the pattern of the CSI-RS resource occupies 2 consecutive REs in the time domain, and occupies at least 2 consecutive REs in the frequency domain;
  • the pattern of the CSI-RS resource occupies 4 consecutive REs in the time domain, and occupies at least 2 consecutive REs in the frequency domain.
  • processing unit 3011 is configured to perform step S201 and step S202 in the method embodiment shown in FIG. 5, and the sending unit 3012 is configured to perform step S203 in the method embodiment shown in FIG. 5.
  • FIG. 11 is a network device 302 according to an embodiment of the present invention.
  • the network device 302 includes a processor 3021, a transceiver 3022, and a memory 3023.
  • the processor 3021, the memory 3023, and the transceiver 3022 pass through a bus. Connected to each other.
  • the memory 3023 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), or a portable device.
  • RAM random access memory
  • ROM read-only memory
  • EPROM Erasable Programmable Read Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • the transceiver 3022 can be a communication module and a transceiver circuit for transmitting data, signaling, and the like between the network device and the terminal device.
  • the transceiver 3022 is configured to perform step S203 in the method embodiment shown in FIG. 5.
  • the processor 3021 can be a controller, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and an on-site Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the invention. Processor 3021 may also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. In the embodiment of the present invention, the processor 3021 is configured to perform step S201 and step S202 in the embodiment shown in FIG. 5.
  • FIG. 12 is a schematic diagram of a logical structure of a terminal device according to an embodiment of the present invention.
  • the terminal device 401 may include a receiving unit 4011 and a processing unit 4012.
  • the receiving unit 4011 is configured to receive configuration information corresponding to a pattern of CSI-RS resources sent by the network device.
  • the processing unit 4012 is configured to determine a pattern of the CSI-RS resource according to the configuration information.
  • the receiving unit 4011 is configured to perform step S204 in the method embodiment shown in FIG. 5, and the processing unit 4012 is configured to perform step S205 in the method embodiment shown in FIG. 5.
  • FIG. 13 is a terminal device 402 according to an embodiment of the present invention.
  • the terminal device 402 includes a processor 4021, a transceiver 4022, and a memory 4023.
  • the processor 4021, the memory 4023, and the transceiver 4022 pass through a bus. Connected to each other.
  • Memory 4023 includes, but is not limited to, RAM, ROM, EPROM, or CD-ROM, which is used for related instructions and data.
  • the transceiver 4022 can be a communication module and a transceiver circuit for transmitting data, signaling, and the like between the network device and the terminal device.
  • the transceiver 4022 is configured to perform step S204 in the method embodiment shown in FIG. 5.
  • the processor 4021 can be a controller, a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the invention.
  • the processor 4021 can also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. In the embodiment of the present invention, the processor 4021 is configured to perform step S205 in the embodiment shown in FIG. 5.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center by means of wire (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a Digital Video Disk (DVD)), or a semiconductor medium (eg, a Solid State Disk (SSD)). Wait.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a Digital Video Disk (DVD)
  • DVD Digital Video Disk
  • SSD Solid State Disk

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Abstract

本发明实施例公开了一种参考信号图样的传输方法及其装置，其中方法包括如下步骤：网络设备确定信道状态信息参考信号CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}；网络设备根据符号数N，得到CSI-RS资源的图样；网络设备向终端设备发送所述CSI-RS资源的图样对应的配置信息；其中，N＝1，CSI-RS资源的图样在时域上占用1个资源元素RE，在频域上占用至少4个连续的RE；或，N＝2，CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2个连续的RE；或，N＝4，CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2个连续的RE。本发明实施例可以实现5G系统中的信道状态信息参考信号资源的图样设计。

Description

一种参考信号图样的传输方法及其装置
本申请要求于2017年5月5日提交中国专利局、申请号为201710314074.6、申请名称为“一种参考信号图样的传输方法及其装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，尤其涉及一种参考信号图样的传输方法及其装置。
背景技术
长期演进(LongTermEvolution，LTE)系统中的帧结构可参见图1所示，一个无线帧为10ms，包括子帧索引为0至9的10个子帧，每个子帧为1ms，1个子帧又分2个时隙(slot)，如果是正常循环前缀(Cyclic Prefix，CP)模式，每个slot有符号索引I＝0至I＝6的7个正交频分复用(Orthogonal FrequencyDivisionMultiplexing，OFDM)符号。系统是通过分配资源块(Resource Block，RB)进行资源分配的，不同带宽对应分配的RB数量不同。通常情况下，1RB在时间维度上包含一个slot占用的时域资源，在频率维度上通常包含12个子载波占用的资源，子载波间隔为15kHz，一个OFDM符号上的一个子载波占用的资源称为资源元素(Resource Element，RE)。
LTE系统中，终端设备可根据基站下发的信道状态信息参考信号(Channel State Information-Reference Signal，CSI-RS)的资源配置信息进行测量，获取信道状态信息(Channel State Information，CSI)，并向基站反馈信道质量指示(Chanel Quality Indicator，CQI)、秩指示(RankIndicator，RI)、预编码矩阵指示(PrecodingMatrix Indicator，PMI)等参数中的至少一个。LTE系统中，CSI-RS最大可支持8个逻辑端口(port)。
但是，第五代移动通信(5th-Generation，5G)系统中，CSI-RS可支持的port数不止8个，LTE系统中的CSI-RS图样(pattern)的设计不适用于5G，CSI-RS pattern的设计是5G的关键问题之一。
发明内容
本发明实施例所要解决的技术问题在于，提供一种参考信号图样的传输方法及其装置，可以实现5G系统中的信道状态信息参考信号资源的图样设计。
第一方面，本发明实施例提供了一种参考信号图样的传输方法，包括：网络设备确定信道状态信息参考信号CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}；所述网络设备根据所述符号数N，得到所述CSI-RS资源的图样；所述网络设备向终端设备发送所述CSI-RS资源的图样对应的配置信息；所述终端设备接收所示网络设备发送的所述CSI-RS资源的图样对应的配置信息；所述终端设备根据所述配置信息确定所述CSI-RS资源的图样；
其中，N＝1，所述CSI-RS资源的图样在时域上占用1个资源元素RE，在频域上占用至少4个连续的RE；
或，N＝2，所述CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2 个连续的RE；
或，N＝4，所述CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2个连续的RE。
通过在确定CSI-RS资源占用的符号数N之后，根据符号数N得到CSI-RS资源的图样，从而实现5G系统中的信道状态信息参考信号资源的图样设计。通过不同N的取值，得到不同的CSI-RS资源的图样，从而灵活地实现CSI-RS资源的图样设计。
在一种可能实现的方式中，在N＝1的情况下，采用第一基本图样(4,1)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(4,1)在时域上占用1个RE，在频域上占用4个连续的RE。
在一种可能实现的方式中，在N＝2的情况下，采用第二基本图样(2,2)进行频域拼接，得到所述CSI-RS资源的图样，所述第二基本图样(2,2)在时域上占用2个连续的RE，在频域上占用2个连续的RE。
在一种可能实现的方式中，在N＝4的情况下，采用第二基本图样(2,4)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(2,4)在时域上占用2个连续的RE，在频域上占用4个连续的RE。
在一种可能实现的方式中，在N＝1的情况下，所述CSI-RS资源的端口数X＝{4,8,12}。
在一种可能实现的方式中，在N＝2的情况下，所述CSI-RS资源的端口数X＝{4,8,12,16}。
在一种可能实现的方式中，在N＝4的情况下，所述CSI-RS资源的端口数X＝{16,32}。
第二方面，本发明实施例提供了一种网络设备，所述网络设备具有实现第一方面所述方法中网络设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能实现的方式中，所述网络设备包括处理单元和发送单元，所述处理单元，用于确定CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}；所述处理单元还用于根据所述符号数N，得到所述CSI-RS资源的图样；所述发送单元，用于向终端设备发送所述CSI-RS资源的图样对应的配置信息；其中，N＝1，所述CSI-RS资源的图样在时域上占用1个RE，在频域上占用至少4个连续的RE；或，N＝2，所述CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2个连续的RE；或，N＝4，所述CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2个连续的RE。
在一种可能实现的方式中，所述网络设备包括处理器和收发器，所述处理器用于确定CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}；所述处理器还用于根据所述符号数N，得到所述CSI-RS资源的图样；所述收发器用于向终端设备发送所述CSI-RS资源的图样对应的配置信息；其中，N＝1，所述CSI-RS资源的图样在时域上占用1个RE，在频域上占用至少4个连续的RE；或，N＝2，所述CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2个连续的RE；或，N＝4，所述CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2个连续的RE。
基于同一发明构思，所述网络设备解决问题的原理以及有益效果可以参见第一方面所述的方法以及所带来的有益效果，所述网络设备的实施可以参见第一方面所述网络设备侧 方法的实施，重复之处不再赘述。
第三方面，本发明实施例提供了一种终端设备，所述终端设备具有实现第一方面所述方法中终端设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能实现的方式中，所述终端设备包括接收单元和处理单元，所述接收单元，用于接收网络设备发送的CSI-RS资源的图样对应的配置信息；所述处理单元，用于根据所述配置信息确定所述CSI-RS资源的图样。
在一种可能实现的方式中，所述终端设备包括处理器和收发器，所述收发器，用于接收网络设备发送的CSI-RS资源的图样对应的配置信息；所述处理器，用于根据所述配置信息确定所述CSI-RS资源的图样。
基于同一发明构思，所述终端设备解决问题的原理以及有益效果可以参见第一方面所述的方法以及所带来的有益效果，所述终端设备的实施可以参见第一方面所述终端设备侧方法的实施，重复之处不再赘述。
第四方面，本发明实施例提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如第一方面所述网络设备的方法。
第五方面，本发明实施例提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如第一方面所述终端设备侧的方法。
在本发明实施例中，通过在确定CSI-RS资源占用的符号数N之后，根据符号数N得到CSI-RS资源的图样，从而实现5G系统中的信道状态信息参考信号资源的图样设计。通过不同N的取值，得到不同的CSI-RS资源的图样，从而灵活地实现CSI-RS资源的图样设计。
附图说明
为了更清楚地说明本发明实施例或背景技术中的技术方案，下面将对本发明实施例或背景技术中所需要使用的附图进行说明。
图1是LTE系统中的帧结构；
图2是本发明实施例的应用场景示意图；
图3是目前基于基本图样(2,1)进行拼接的方案示例图；
图4是本发明实施例提供的三种基本图样的示意图；
图5是本发明实施例提供的一种参考信号图样的传输方法的流程示意图；
图6a是本发明实施例提供的N＝1时的8端口CSI-RS资源的图样示例图；
图6b是本发明实施例提供的N＝2时的8端口CSI-RS资源的图样示例图；
图7a是本发明实施例提供的N＝1时的12端口CSI-RS资源的图样示例图；
图7b是本发明实施例提供的N＝2时的12端口CSI-RS资源的图样示例图；
图8a是本发明实施例提供的N＝2时的16端口CSI-RS资源的图样示例图；
图8b是本发明实施例提供的N＝4时的16端口CSI-RS资源的图样示例图；
图9是本发明实施例提供的N＝4时的32端口CSI-RS资源的图样示例图；
图10是本发明实施例提供的网络设备的逻辑结构示意图；
图11是本发明实施例提供的网络设备的实体结构示意图；
图12是本发明实施例提供的终端设备的逻辑结构示意图；
图13是本发明实施例提供的终端设备的实体结构示意图。
具体实施方式
下面结合本发明实施例中的附图对本发明实施例进行描述。
本发明实施例可以应用于无线通信系统，无线通信系统通常由小区组成，每个小区包含一个基站(Base Station，BS)，基站向多个终端设备提供通信服务，其中基站连接到核心网设备，如图2所示。其中，基站包含基带单元(Baseband Unit，BBU)和远端射频单元(Remote Radio Unit，RRU)。BBU和RRU可以放置在不同的地方，例如：RRU拉远，放置于离高话务量的开阔区域，BBU放置于中心机房。BBU和RRU也可以放置在同一机房。BBU和RRU也可以为一个机架下的不同部件。
需要说明的是，本发明实施例提及的无线通信系统包括但不限于：窄带物联网系统(Narrow Band-Internet ofThings，NB-IoT)、全球移动通信系统(Global System for Mobile Communications，GSM)、增强型数据速率GSM演进系统(Enhanced Data rate for GSM Evolution，EDGE)、宽带码分多址系统(Wideband Code Division MultipleAccess，WCDMA)、码分多址2000系统(Code Division MultipleAccess，CDMA2000)、时分同步码分多址系统(Time Division-Synchronization Code Division MultipleAccess，TD-SCDMA)，长期演进系统(Long Term Evolution，LTE)、5G系统以及未来移动通信系统。
本发明实施例中，所述基站是一种部署在无线接入网中用以为终端设备提供无线通信功能的装置。所述基站可以包括各种形式的宏基站，微基站(也称为小站)，中继站，接入点，传输接入点(Transmission Receiver point，TRP)等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如，在LTE系统中，称为演进的节点B(evolvedNodeB，eNB或者eNodeB),在第三代(3rd Generation，3G)系统中，称为节点B(Node B，NB)等。为方便描述，本发明所有实施例中，上述为终端设备提供无线通信功能的装置统称为网络设备。
本发明实施例中所涉及到的终端设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。所述终端设备也可以称为移动台(Mobile Station，MS)、终端(Terminal)，还可以包括用户单元(subscriber unit)、蜂窝电话(cellularphone)、智能手机(smart phone)、无线数据卡、个人数字助理(Personal DigitalAssistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handset)、膝上型电脑(laptop computer)、机器类型通信(Machine Type Communication，MTC)终端等。为方便描述，本发明所有实施例中，上面提到的设备统称为终端设备。
目前，在相关标准会议上，同意一个X-port CSI-RS资源是由一个或多个基本pattern拼接而成，其中基本pattern(Y,Z)是由一个RB内的频域上连续Y个RE和时域上连续Z个RE组成。在相关标准化会上，同意一个2-port CSI-RS pattern由一个OFDM符号内一个RB上的连续2个RE组成，表示成(2,1)。一个4-port CSI-RS pattern有2种形式，一种是在一个符号内一个RB上的连续4个RE组成，即(4,1)；另一种是由一个RB上的连续2个频域RE和连续2个时域RE组成，即(2,2)。
目前，有提出对于任意一个port数的CSI-RS资源都是由基本pattern(2,1)进行拼接的方案。因为一个RB内有12个子载波，那么基本pattern(2,1)在一个RB内有6个频域位置，如图3所示，以连续4个符号为例，每种阴影代表一个基本pattern可能出现的时频位置。定义一个6-比特(bit)序列表示这6个频域位置，为1则表示占用了位置的基本pattern。那么，任一个CSI-RS资源的频域位置都可由该6-bit指示，其时域位置需要另外一个K-bit序列(K表示CSI-RS所有可能出现的OFDM符号数目)指示，为1则表示占用了其对应的OFDM符号。因此，在该方案中，任意一个port数的CSI-RS资源都是由(6+K)比特的序列指示。该方案因为由最小拼接单元2RE开始拼接，可以支持灵活的各种任意组合，但是缺点是信令开销大。此外，4-port CSI-RS pattern是(4,1)和(2,2)，即是由频域/时间上连续RE组成，并不是由基本pattern(2,1)任意组合而成，因此由基本pattern(2,1)进行拼接的方案会引入冗余基本pattern和信令开销。
鉴于基本pattern(2,1)的弊端，本发明实施例提供三种基本pattern(4,1)、(2,2)、(2,4)用于生成CSI-RS资源的图样，可参见图4所示，基本pattern(4,1)在1个RB，1个符号内可能出现的位置有3种，一种阴影所在的位置可表示1个基本pattern(4,1)；基本pattern(2,2)在1个RB，2个符号内可能出现的位置有6种，一种阴影所在的位置可表示一个基本pattern(2,2)；基本pattern(2,4)在1个RB，4个符号内可能出现的位置有6种，一种阴影所在的位置可表示一个基本pattern(2,4)。本发明实施例通过基本pattern(4,1)或(2,2)或(2,4)得到CSI-RS资源的图样，不仅可以灵活地实现CSI-RS资源的pattern设计，还可以避免由基本pattern(2,1)进行拼接的方案引入的冗余基本pattern并节省信令开销。
本发明实施例提供的参考信号图样的传输方法为针对生成信道状态信息参考信号的图样的方法，应用在5G系统中，主要应用在5G系统中信道状态信息参考信号可支持的port数大于等于4的场景。
本发明实施例中，由网络设备在确定CSI-RS资源占用的符号数N的情况下，根据N的取值，得到不同符号数对应的CSI-RS资源的pattern。由于CSI-RS资源的pattern的种类可能有多种，网络设备可从多种CSI-RS资源的pattern中选择一种进行资源配置，并将资源配置信息发送至终端设备，由终端设备根据资源配置信息进行测量，获取CSI，并向网络设备反馈CQI、RI、PMI等参数中的至少一种。
本发明实施例提供的参考信号图样的传输方法及其装置，可以实现5G系统中的CSI-RS资源的图样设计。通过不同N的取值，得到不同的CSI-RS资源的图样，从而灵活地实现CSI-RS资源的图样设计。
请参见图5，图5是本发明实施例提供的一种参考信号图样的传输方法，从网络设备与终端设备交互的角度进行接收，该方法包括但不限于如下步骤：
步骤S201：网络设备确定信道状态信息参考信号CSI-RS资源占用的符号数N；
具体地，所述网络设备确定CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}，表示N的取值可以为1或2或4。N＝1，表示所述CSI-RS资源占用1个符号；N＝2，表示所述CSI-RS资源占用2个符号；N＝4，表示所述CSI-RS资源占用4个符号。
所述网络设备可根据所述CSI-RS资源的端口数X确定所述CSI-RS资源占用的符号数 N。若X＝4，则N＝1或2；若X＝8，则N＝1或2；若X＝12，则N＝1或2；若X＝16，则N＝2或4；若X＝32，则N＝4。
由于一个X对应至少一个N，例如，X＝8，N＝1或2，那么所述网络设备可从至少一个N中选择一个N，并将所选的N配置在资源配置信息中，以便终端设备能够获知所述CSI-RS资源占用的符号数。所述网络设备如何从至少一个N中选择一个N的方法在本发明实施例中不做限定。
归纳可得，所述CSI-RS资源占用的符号数N与所述CSI-RS资源的端口数X之间的关系如下：
若N＝1，则X＝{4,8,12}；
若N＝2，则X＝{4,8,12,16}；
若N＝4，则X＝{16,32}。
其中，所述CSI-RS资源占用的符号数可以为占用的OFDM符号数。
步骤S202：所述网络设备根据所述符号数N，得到所述CSI-RS资源的图样；
具体地，在N＝1的情况下，即所述CSI-RS资源占用一个符号，则所述网络设备可采用第一基本pattern(4,1)进行频域拼接，得到所述CSI-RS资源的pattern。由于所述第一基本pattern(4,1)表示在时域上占用1个RE，在频域上占用4个RE，那么进行频域拼接得到的所述CSI-RS资源的pattern在时域上占用1个RE，在频域上占用至少4个连续的RE，例如8-port CSI-RS资源的一种pattern在时域上占用1个RE，在频域上占用8个连续的RE。所述网络设备还可采用其它方式进行设计，得到在时域上占用1个RE，在频域上占用至少4个连续的RE的所述CSI-RS资源的图样。
在N＝2的情况下，即所述CSI-RS资源占用2个符号，则所述网络设备可采用第二基本pattern(2,2)进行频域拼接，得到所述CSI-RS资源的pattern。由于所述第二基本pattern(2,2)表示在时域上占用2个RE，在频域上占用2个RE，那么进行频域拼接得到的所述CSI-RS资源的pattern在时域上占用2个RE，在频域上占用至少2个连续的RE，例如8-port CSI-RS资源的一种pattern在时域上占用2个RE，在频域上占用4个连续的RE。所述网络设备还可采用其它方式进行设计，得到在时域上占用2个RE，在频域上占用至少2个连续的RE的所述CSI-RS资源的图样。
在N＝4的情况下，即所述CSI-RS资源占用4个符号，则所述网络设备可采用第三基本pattern(2,4)进行频域拼接，得到所述CSI-RS资源的pattern。由于所述第三基本pattern(2,4)表示在时域上占用2个RE，在频域上占用4个RE，那么进行频域拼接得到的所述CSI-RS资源的pattern在时域上占用4个RE，在频域上占用至少2个连续的RE，例如16-port CSI-RS资源的一种pattern在时域上占用4个RE，在频域上占用4个连续的RE。所述网络设备还可采用其它方式进行设计，得到在时域上占用4个RE，在频域上占用至少2个连续的RE的所述CSI-RS资源的图样。
步骤S203：所述网络设备向所述终端设备发送所述CSI-RS资源的图样对应的配置信息；
具体地，所述CSI-RS资源的图样对应的配置信息指示所述网络设备采用多个CSI-RS资源的图样中的哪个或哪几个，还指示N＝1或2或4。
步骤S204：所述终端设备接收所述网络设备发送的CSI-RS资源的图样对应的配置信息；
步骤S205：所述终端设备根据所述配置信息确定所述CSI-RS资源的图样；
具体地，所述终端设备根据所述配置信息确定所述CSI-RS资源的图样，从而获取所述CSI-RS资源，以便进行测量。
在图5所描述的实施例中，网络设备在确定CSI-RS资源占用的符号数N的情况下，根据N的取值进行设计，得到不同符号数对应的CSI-RS资源的pattern，可以实现5G系统中的CSI-RS资源的图样设计，并灵活地实现CSI-RS资源的图样设计。通过基本pattern(4,1)或(2,2)或(2,4)得到CSI-RS资源的图样，不仅可以灵活地实现CSI-RS资源的pattern设计，还可以避免由基本pattern(2,1)进行拼接的方案引入的冗余基本pattern并节省信令开销。
需要说明的是，图5所描述的实施例中，以CSI-RS资源占用的符号数为1或2或4为例进行介绍，实际应用中，CSI-RS资源可能出现的符号数为K，可基于符号数为1或2或4的情况进行扩展。
下面将针对8-port CSI-RS资源、12-port CSI-RS资源、16-port CSI-RS资源、32-port CSI-RS资源的pattern设计方案进行介绍。
8-port CSI-RS资源：
(1)在N＝1的情况下，可采用基本pattern(4,1)进行频域拼接。基本pattern(4,1)在1个RB，1个符号内可能出现的位置有3种，可参见图4，那么1个符号内的8-port CSI-RS资源的图样可由这3个基本pattern中的任意2个拼接而成，因此，1个符号内的8-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000001
种，可参见图6a所示的8端口CSI-RS资源的图样示例图，一种阴影所在的位置可表示一种8-port CSI-RS资源的图样。
令图4中占用子载波编号0-3的基本pattern(4,1)为基本pattern(a)，令图4中占用子载波编号4-7的基本pattern(4,1)为基本pattern(b)，令图4中占用子载波编号8-11的基本pattern(4,1)为基本pattern(c)。
图6a中(A)所示的8端口CSI-RS资源的图样在时域上占用1个RE，在频域上占用8个连续的RE，由相邻的基本pattern(b)和基本pattern(c)拼接而成。图6a中(B)所示的8端口CSI-RS资源的图样在时域上占用1个RE，在频域上占用8个连续的RE，由相邻的基本pattern(a)和基本pattern(b)拼接而成。图6a中(C)所示的8端口CSI-RS资源的图样在时域上占用1个RE，在频域上占用一个4个连续的RE和一个4个连续的RE，由不相邻的基本pattern(a)和基本pattern(c)拼接而成。
若8-port CSI-RS资源可能出现的符号数为K，则K个符号内的8-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000002
种。
(2)在N＝2的情况下，可采用基本pattern(2,2)进行频域拼接。基本pattern(2,2)在1个RB，2个符号内可能出现的位置有6种，可参见图4，那么2个符号内的8-port CSI-RS资源的图样可由这6个基本pattern中的任意2个拼接而成，因此，2个符号内的8-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000003
种，可参见图6b所示的8端口CSI-RS资源的图样示例图，列举了 15种的两种，一种阴影所在的位置可表示一种8-port CSI-RS资源的图样。
令图4中占用子载波编号0-1的基本pattern(2,2)为基本pattern(a)，令图4中占用子载波编号2-3的基本pattern(2,2)为基本pattern(b)，令图4中占用子载波编号4-5的基本pattern(2,2)为基本pattern(c)，令图4中占用子载波编号6-7的基本pattern(2,2)为基本pattern(d)，令图4中占用子载波编号8-9的基本pattern(2,2)为基本pattern(e)，令图4中占用子载波编号10-11的基本pattern(2,2)为基本pattern(f)。
图6b中(A)所示的8端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用4个连续的RE，由相邻的基本pattern(f)和pattern(e)拼接而成；图6b中(B)所示的8端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用一个2个连续的RE和一个2个连续的RE，由不相邻的基本pattern(f)和pattern(d)拼接而成。
若8-port CSI-RS资源可能出现的符号数为K，则K个符号内的8-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000004
种。
12-port CSI-RS资源：
(1)在N＝1的情况下，可采用基本pattern(4,1)进行频域拼接。基本pattern(4,1)在1个RB，1个符号内可能出现的位置有3种，可参见图4，那么1个符号内的12-port CSI-RS资源的图样可由这3个基本pattern拼接而成，因此，1个符号内的12-port CSI-RS资源的图样共有1种，可参见图7a所示的12端口CSI-RS资源的图样示例图。
若12-port CSI-RS资源可能出现的符号数为K，则K个符号内的12-port CSI-RS资源的图样共有K种。
(2)在N＝2的情况下，可采用基本pattern(2,2)进行频域拼接。基本pattern(2,2)在1个RB，2个符号内可能出现的位置有6种，可参见图4，那么2个符号内的12-port CSI-RS资源的图样可由这6个基本pattern中的任意3个拼接而成，因此，2个符号内的12-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000005
种，可参见图7b所示的12端口CSI-RS资源的图样示例图，列举了20种的3种，一种阴影所在的位置可表示一种12-port CSI-RS资源的图样。
令图4中占用子载波编号0-1的基本pattern(2,2)为基本pattern(a)，令图4中占用子载波编号2-3的基本pattern(2,2)为基本pattern(b)，令图4中占用子载波编号4-5的基本pattern(2,2)为基本pattern(c)，令图4中占用子载波编号6-7的基本pattern(2,2)为基本pattern(d)，令图4中占用子载波编号8-9的基本pattern(2,2)为基本pattern(e)，令图4中占用子载波编号10-11的基本pattern(2,2)为基本pattern(f)。
图7b中(A)所示的12端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用6个连续的RE，由相邻的基本pattern(f)、基本pattern(e)和基本pattern(d)拼接而成；图7b中(B)所示的12端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用4个连续的RE和2个连续的RE，由基本pattern(c)、相邻的基本pattern(f)和基本pattern(e)拼接而成；图7b中(C)所示的12端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用三个2个连续的RE，由三个互不相邻的基本pattern(f)、基本pattern(d)和基本pattern(b)拼接而成。
若12-port CSI-RS资源可能出现的符号数为K，则K个符号内的12-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000006
种。
16-port CSI-RS资源：
(1)在N＝2的情况下，可采用基本pattern(2,2)进行频域拼接。基本pattern(2,2)在1个RB，2个符号内可能出现的位置有6种，可参见图4，那么2个符号内的16-port CSI-RS资源的图样可由这6个基本pattern中的任意4个拼接而成，因此，2个符号内的16-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000007
种，可参见图8a所示的16端口CSI-RS资源的图样示例图，列举了20种的4种，一种阴影所在的位置可表示一种16-port CSI-RS资源的图样。
令图4中占用子载波编号0-1的基本pattern(2,2)为基本pattern(a)，令图4中占用子载波编号2-3的基本pattern(2,2)为基本pattern(b)，令图4中占用子载波编号4-5的基本pattern(2,2)为基本pattern(c)，令图4中占用子载波编号6-7的基本pattern(2,2)为基本pattern(d)，令图4中占用子载波编号8-9的基本pattern(2,2)为基本pattern(e)，令图4中占用子载波编号10-11的基本pattern(2,2)为基本pattern(f)。
图8a中(A)所示的16端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用8个连续的RE，由基本pattern(f)、基本pattern(e)、基本pattern(d)和基本pattern(c)拼接而成；图8a中(B)所示的16端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用一个4个连续的RE和一个4个连续的RE，由基本pattern(f)、基本pattern(e)、基本pattern(b)和基本pattern(a)拼接而成；图8a中(C)所示的16端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用4个连续的RE和两个2个连续的RE，由基本pattern(f)、基本pattern(d)、基本pattern(b)和基本pattern(a)拼接而成；图8a中(D)所示的16端口CSI-RS资源的图样在时域上占用2个RE，在频域上占用6个连续的RE和2个连续的RE，由基本pattern(f)、基本pattern(c)、基本pattern(b)和基本pattern(a)拼接而成。
若16-port CSI-RS资源可能出现的符号数为K，则K个符号内的16-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000008
种。
(2)在N＝4的情况下，可采用基本pattern(2,4)进行频域拼接。基本pattern(2,4)在1个RB，4个符号内可能出现的位置有6种，可参见图4，那么4个符号内的16-port CSI-RS资源的图样可由这6个基本pattern中的任意2个拼接而成，因此，4个符号内的16-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000009
种，可参见图8b所示的16端口CSI-RS资源的图样示例图，列举了15种的2种，一种阴影所在的位置可表示一种16-port CSI-RS资源的图样。
令图4中占用子载波编号0-1的基本pattern(2,4)为基本pattern(a)，令图4中占用子载波编号2-3的基本pattern(2,4)为基本pattern(b)，令图4中占用子载波编号4-5的基本pattern(2,4)为基本pattern(c)，令图4中占用子载波编号6-7的基本pattern(2,4)为基本pattern(d)，令图4中占用子载波编号8-9的基本pattern(2,4)为基本pattern(e)，令图4中占用子载波编号10-11的基本pattern(2,4)为基本pattern(f)。
图8b中(A)所示的16端口CSI-RS资源的图样在时域上占用4个RE，在频域上占用4个连续的RE，由相邻的基本pattern(f)和基本pattern(e)拼接而成；图8b中(B)所示的16端口CSI-RS资源的图样在时域上占用4个RE，在频域上占用一个2个连续的RE和一个2个连续的RE，由不相邻的基本pattern(f)和基本pattern(d)拼接而成。
若16-port CSI-RS资源可能出现的符号数为K，则K个符号内的16-port CSI-RS资源 的图样共有
Figure PCTCN2018085515-appb-000010
种。
32-port CSI-RS资源：
N＝4，可采用基本pattern(2,4)进行频域拼接。基本pattern(2,4)在1个RB，4个符号内可能出现的位置有6种，可参见图4，那么4个符号内的32-port CSI-RS资源的图样可由这6个基本pattern中的任意4个拼接而成，因此，4个符号内的32-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000011
种，可参见图9所示的32端口CSI-RS资源的图样示例图，列举了15种的3种，一种阴影所在的位置可表示一种32-port CSI-RS资源的图样。
令图4中占用子载波编号0-1的基本pattern(2,4)为基本pattern(a)，令图4中占用子载波编号2-3的基本pattern(2,4)为基本pattern(b)，令图4中占用子载波编号4-5的基本pattern(2,4)为基本pattern(c)，令图4中占用子载波编号6-7的基本pattern(2,4)为基本pattern(d)，令图4中占用子载波编号8-9的基本pattern(2,4)为基本pattern(e)，令图4中占用子载波编号10-11的基本pattern(2,4)为基本pattern(f)。
图9中(A)所示的32端口CSI-RS资源的图样在时域上占用4个RE，在频域上占用8个连续的RE，由基本pattern(f)、基本pattern(e)、基本pattern(d)和基本pattern(c)拼接而成；图9中(B)所示的32端口CSI-RS资源的图样在时域上占用4个RE，在频域上占用一个4个连续的RE和一个4个连续的RE，由基本pattern(f)、基本pattern(e)、基本pattern(b)和基本pattern(a)拼接而成；图9中(C)所示的32端口CSI-RS资源的图样在时域上占用4个RE，在频域上占用4个连续的RE和两个2个连续的RE组成，由基本pattern(f)、基本pattern(e)、基本pattern(c)和基本pattern(a)拼接而成。
若32-port CSI-RS资源可能出现的符号数为K，则K个符号内的32-port CSI-RS资源的图样共有
Figure PCTCN2018085515-appb-000012
种。
对于4-port CSI-RS资源，可采用基本pattern(4,1)或基本pattern(2,2)进行频域拼接。若采用基本pattern(4,1)，那么1个符号内的4-port CSI-RS资源的图样可为图4所示的三种基本pattern(4,1)中的任意一种。若采用基本pattern(2,2)，那么2个符号内的4-port CSI-RS资源的图样可为图4所示的六种基本pattern(2,2)中的任意一种。
上述详细阐述了本发明实施例的方法，下面阐述本发明实施例提供的装置。
请参见图10，图10是本发明实施例提供的一种网络设备的逻辑结构示意图，该网络设备301可以包括处理单元3011和发送单元3012。
处理单元3011，用于确定CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}；
所述处理单元3011，还用于根据所述符号数N，得到所述CSI-RS资源的图样；
发送单元3012，用于向终端设备发送所述CSI-RS资源的图样对应的配置信息；
其中，N＝1，所述CSI-RS资源的图样在时域上占用1个RE，在频域上占用至少4个连续的RE；
或，N＝2，所述CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2个连续的RE；
或，N＝4，所述CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2 个连续的RE。
所述处理单元3011具体用于在N＝1的情况下，采用第一基本图样(4,1)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(4,1)在时域上占用1个RE，在频域上占用4个连续的RE。
所述处理单元3011具体用于在N＝2的情况下，采用第二基本图样(2,2)进行频域拼接，得到所述CSI-RS资源的图样，所述第二基本图样(2,2)在时域上占用2个连续的RE，在频域上占用2个连续的RE。
所述处理单元3011具体用于在N＝4的情况下，采用第二基本图样(2,4)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(2,4)在时域上占用2个连续的RE，在频域上占用4个连续的RE。
在N＝1的情况下，所述CSI-RS资源的端口数X＝{4,8,12}。
在N＝2的情况下，所述CSI-RS资源的端口数X＝{4,8,12,16}。
在N＝4的情况下，所述CSI-RS资源的端口数X＝{16,32}。
需要说明的是，处理单元3011用于执行图5所示的方法实施例中的步骤S201和步骤S202，发送单元3012用于执行图5所示的方法实施例中的步骤S203。
请参见图11，图11是本发明实施例提供的一种网络设备302，该网络设备302包括处理器3021、收发器3022和存储器3023，所述处理器3021、存储器3023和收发器3022通过总线相互连接。
存储器3023包括但不限于是随机存储记忆体(RandomAccess Memory，RAM)、只读存储器(Read-Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、或便携式只读存储器(Compact Disc Read-Only Memory，CD-ROM)，该存储器3023用于相关指令及数据。
收发器3022可以是通信模块、收发电路，用于实现网络设备与终端设备之间的数据、信令等信息的传输。应用在本发明实施例中，收发器3022用于执行图5所示的方法实施例中的步骤S203。
处理器3021可以是控制器，中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器3021也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。应用在本发明实施例中，处理器3021用于执行图5所示实施例中的步骤S201和步骤S202。
请参见图12，图12是本发明实施例提供的一种终端设备的逻辑结构示意图，该终端设备401可以包括接收单元4011和处理单元4012。
接收单元4011，用于接收网络设备发送的CSI-RS资源的图样对应的配置信息；
处理单元4012，用于根据所述配置信息确定所述CSI-RS资源的图样。
需要说明的是，接收单元4011用于执行图5所示的方法实施例中的步骤S204，处理单元4012用于执行图5所示的方法实施例中的步骤S205。
请参见图13，图13是本发明实施例提供的一种终端设备402，该终端设备402包括处理器4021、收发器4022和存储器4023，所述处理器4021、存储器4023和收发器4022通过总线相互连接。
存储器4023包括但不限于是RAM、ROM、EPROM或CD-ROM，该存储器4024用于相关指令及数据。
收发器4022可以是通信模块、收发电路，用于实现网络设备与终端设备之间的数据、信令等信息的传输。应用在本发明实施例中，收发器4022用于执行图5所示的方法实施例中的步骤S204。
处理器4021可以是控制器，CPU，通用处理器，DSP，ASIC，FPGA或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器4021也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。应用在本发明实施例中，处理器4021用于执行图5所示实施例中的步骤S205。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(Digital Video Disk，DVD))、或者半导体介质(例如固态硬盘(Solid State Disk，SSD)等。

Claims (18)

  1. 一种参考信号图样的传输方法，其特征在于，包括：
    网络设备确定信道状态信息参考信号CSI-RS资源占用的符号数N，N为正整数，N＝{1,2,4}；
    所述网络设备根据所述符号数N，得到所述CSI-RS资源的图样；
    所述网络设备向终端设备发送所述CSI-RS资源的图样对应的配置信息；
    其中，N＝1，所述CSI-RS资源的图样在时域上占用1个资源元素RE，在频域上占用至少4个连续的RE；
    或，N＝2，所述CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2个连续的RE；
    或，N＝4，所述CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2个连续的RE。
  2. 一种参考信号图样的传输方法，其特征在于，包括：
    终端设备接收网络设备发送的CSI-RS资源的图样对应的配置信息；
    所述终端设备根据所述配置信息确定所述CSI-RS资源的图样。
  3. 如权利要求1或2所述的方法，其特征在于，所述根据所述符号数N，得到所述CSI-RS资源的图样，包括：
    在N＝1的情况下，采用第一基本图样(4,1)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(4,1)在时域上占用1个RE，在频域上占用4个连续的RE。
  4. 如权利要求1或2所述的方法，其特征在于，所述根据所述符号数N，得到所述CSI-RS资源的图样，包括：
    在N＝2的情况下，采用第二基本图样(2,2)进行频域拼接，得到所述CSI-RS资源的图样，所述第二基本图样(2,2)在时域上占用2个连续的RE，在频域上占用2个连续的RE。
  5. 如权利要求1或2所述的方法，其特征在于，所述根据所述符号数N，得到所述CSI-RS资源的图样，包括：
    在N＝4的情况下，采用第二基本图样(2,4)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(2,4)在时域上占用2个连续的RE，在频域上占用4个连续的RE。
  6. 如权利要求1或2或3所述的方法，其特征在于，在N＝1的情况下，所述CSI-RS资源的端口数X＝{4,8,12}。
  7. 如权利要求1或2或4所述的方法，其特征在于，在N＝2的情况下，所述CSI-RS资源的端口数X＝{4,8,12,16}。
  8. 如权利要求1或2或5所述的方法，其特征在于，在N＝4的情况下，所述CSI-RS资源的端口数X＝{16,32}。
  9. 一种网络设备，其特征在于，包括处理器和收发器，
    所述处理器，用于确定信道状态信息参考信号CSI-RS资源占用的符号数N，N为正整 数，N＝{1,2,4}；
    所述处理器，还用于根据所述符号数N，得到所述CSI-RS资源的图样；
    所述收发器，用于向终端设备发送所述CSI-RS资源的图样对应的配置信息；
    其中，N＝1，所述CSI-RS资源的图样在时域上占用1个资源元素RE，在频域上占用至少4个连续的RE；
    或，N＝2，所述CSI-RS资源的图样在时域上占用2个连续的RE，在频域上占用至少2个连续的RE；
    或，N＝4，所述CSI-RS资源的图样在时域上占用4个连续的RE，在频域上占用至少2个连续的RE。
  10. 如权利要求9所述的网络设备，其特征在于，所述处理器具体用于在N＝1的情况下，采用第一基本图样(4,1)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(4,1)在时域上占用1个RE，在频域上占用4个连续的RE。
  11. 如权利要求9所述的网络设备，其特征在于，所述处理器具体用于在N＝2的情况下，采用第二基本图样(2,2)进行频域拼接，得到所述CSI-RS资源的图样，所述第二基本图样(2,2)在时域上占用2个连续的RE，在频域上占用2个连续的RE。
  12. 如权利要求9所述的网络设备，其特征在于，所述处理器具体用于在N＝4的情况下，采用第二基本图样(2,4)进行频域拼接，得到所述CSI-RS资源的图样，所述第一基本图样(2,4)在时域上占用2个连续的RE，在频域上占用4个连续的RE。
  13. 如权利要求9或10所述的网络设备，其特征在于，在N＝1的情况下，所述CSI-RS资源的端口数X＝{4,8,12}。
  14. 如权利要求9或11所述的网络设备，其特征在于，在N＝2的情况下，所述CSI-RS资源的端口数X＝{4,8,12,16}。
  15. 如权利要求9或12所述的网络设备，其特征在于，在N＝4的情况下，所述CSI-RS资源的端口数X＝{16,32}。
  16. 一种终端设备，其特征在于，包括处理器和收发器，
    所述收发器，用于接收网络设备发送的CSI-RS资源的图样对应的配置信息；
    所述处理器，用于根据所述配置信息确定所述CSI-RS资源的图样。
  17. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-7任意一项所述的参考信号图样的传输方法。
  18. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求2所述的参考信号图样的传输方法。
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