WO2022037076A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2022037076A1
WO2022037076A1 PCT/CN2021/085077 CN2021085077W WO2022037076A1 WO 2022037076 A1 WO2022037076 A1 WO 2022037076A1 CN 2021085077 W CN2021085077 W CN 2021085077W WO 2022037076 A1 WO2022037076 A1 WO 2022037076A1
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WIPO (PCT)
Prior art keywords
network device
pilot
polarization
terminal device
pilot frequency
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PCT/CN2021/085077
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English (en)
French (fr)
Inventor
金石
顾芷西
韩瑜
刘祺
孙欢
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华为技术有限公司
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Publication of WO2022037076A1 publication Critical patent/WO2022037076A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • 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
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and apparatus.
  • massive multiple input multiple output (MIMO) technology uses a large antenna array on the network device side to serve multiple terminal devices at the same time to obtain greater spatial multiplexing gain.
  • MIMO massive multiple input multiple output
  • a dual-polarization-based antenna array is used on the network device side. Using a dual-polarized antenna can effectively reduce the size of the array when the number of antenna elements is doubled, and obtain approximately twice the channel capacity of a single-polarized antenna.
  • each dual-polarization unit consists of a vertical antenna and a horizontal antenna. Then the base station needs to estimate the channel information in different polarization directions. How to acquire channel information in different polarization directions is a technical problem to be solved in the embodiments of the present application.
  • Embodiments of the present application provide a communication method and apparatus for acquiring channel information in different polarization directions.
  • a communication method is provided, the execution subject of the communication method is a network device, and may also be a component (for example, a chip, a circuit, or others) configured in the network device, and the method includes: the network device receives data from a terminal The first pilot frequency and the second pilot frequency of the device, the first pilot frequency is sent by the terminal device in the first polarization direction, and the second pilot frequency is sent by the terminal device in the second polarization direction; The first pilot frequency and the second pilot frequency determine the channel information between the network equipment and the terminal equipment.
  • the first pilot frequency may be a dense pilot frequency
  • the second pilot frequency may be a sparse pilot frequency
  • the channel information between the network device and the terminal device may include the channel information between the terminal device and the network device in the first polarization direction.
  • the network device determines the channel information between the network device and the terminal device according to the first pilot frequency and the second pilot frequency, including: the network device measures the first pilot frequency to obtain an antenna polarization independent
  • the antenna polarization independence parameter is used to determine the channel information between the terminal device and the network device in the second polarization direction; the network device according to the first pilot, the second pilot and the antenna polarization independence parameter, Determine the channel information between the network device and the terminal device.
  • the network device may determine channel information between the terminal device and the network device in the first polarization direction according to the first pilot frequency.
  • the network device may fine-tune the antenna polarization-independent parameter according to the second pilot frequency, and obtain channel information between the terminal device and the network device in the second polarization direction.
  • the first pilot may be a dense pilot
  • the second pilot may be a sparse pilot.
  • the network device can derive the antenna polarization independence parameter according to the dense pilot frequency.
  • the antenna polarization-independent parameters according to the sparse pilots By fine-tuning the antenna polarization-independent parameters according to the sparse pilots, the channel information between the terminal equipment and the network equipment in the second polarization direction corresponding to the sparse pilots can be obtained. It can be seen that it is not necessary to configure dense pilots and sparse pilots, and the channel information between the network device and the terminal device can also be derived to save pilot resources.
  • the network device measures the first pilot to obtain an antenna polarization-independent parameter, including: the network device determines the first received signal vector according to the received first pilot; the network device determines the first received signal vector according to the received first pilot; The first received signal vector is subjected to a two-dimensional discrete Fourier transform DFT to obtain a two-dimensional matrix including the delay and direction angle of each path in one or more paths; the network device is based on the delay, direction angle and direction angle of each path. Its corresponding two-dimensional matrix determines the gain of each path; wherein, the delay, direction angle and gain of each path in one or more paths constitute the antenna polarization-independent parameters.
  • the network device can obtain the antenna polarization-independent parameter. Since the antenna polarization-independent parameter has a high probability of not changing with the polarization direction, the subsequent use of the antenna polarization-independent parameter can Derive the channel information between the terminal device and the network device in other polarization directions. Compared with other complex complex methods in the prior art, in this design, by performing DFT transformation on the first pilot frequency, the antenna polarization-independent parameters can be obtained, thereby reducing the computational complexity.
  • the network device determines the channel information between the network device and the terminal device according to the first pilot, the second pilot and the antenna polarization independence parameter, including: the network device, according to the first pilot, Determine the channel information between the terminal device and the network device in the first polarization direction; the network device supplements the antenna polarization independence parameter according to the second pilot frequency; the network device obtains the terminal according to the supplemented antenna polarization independence parameter Channel information between the device and the network device in the second polarization direction.
  • the network device supplements the antenna polarization-independent parameter according to the second pilot frequency, including: the network device determines, according to the received second pilot frequency, that the terminal device is in the second polarization direction Whether there is a new path between the network equipment except the path in the antenna polarization-independent parameter; when a new path appears, the network equipment determines the delay, direction angle and gain of the new path; Delay, azimuth, and gain to supplement the antenna polarization-independent parameters.
  • the method further includes: the network device deletes one or more paths in the antenna polarization-independent parameter.
  • the network device deletes one or more paths in the antenna polarization-independent parameter, including: the network device determines the power of each path according to the gain of each path in the antenna polarization-independent parameter ratio; when the power ratio of a path is less than the first threshold, the network device deletes the path in the antenna polarization independence parameter.
  • the paths in the first polarization direction may not exist in the second polarization direction.
  • one or more paths in the antenna polarization-independent parameters derived according to the first pilot frequency in the first polarization direction can be deleted, so that the terminal device finally derived in the second polarization direction can be deleted.
  • the channel information between the network device and the network device is more accurate.
  • the method further includes: the network device determines the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter from the energy of the second pilot frequency; when the remaining energy is greater than the second pilot frequency When the threshold is set, the network device supplements the antenna polarization independence parameter according to the second pilot frequency.
  • the network device does not directly supplement the antenna polarization-independent parameters, but firstly judges whether the above-mentioned residual energy is greater than the second threshold, and if it is greater, then supplements the antenna polarization-independent parameters, if not greater than , the antenna polarization-independent parameter can be directly assigned as the channel information between the terminal device and the network device in the second polarization direction, thereby further reducing the computational complexity.
  • the first polarization direction is different from the second polarization direction, or the first polarization direction and the second polarization direction are the same, and the first pilot frequency and the second pilot frequency pass through different antennas sent.
  • the method further includes: the network device performs at least one of scheduling, precoding, or resource allocation on the terminal device according to channel information between the network device and the terminal device.
  • the method further includes: the network device sends first configuration information to the terminal device, where the first configuration information is used to configure the first pilot frequency in the first polarization direction for the terminal device; the network device sends the terminal device Send second configuration information, where the second configuration information is used to configure a second pilot in a second polarization direction for the terminal device.
  • the first pilot may be a dense pilot
  • the second pilot may be a sparse pilot.
  • the network device configures the terminal device with dense pilots and sparse pilots, and measures channel information between the terminal device and the network device. Compared with configuring dense pilots for all terminal devices, pilot overhead can be reduced.
  • a communication method where the execution subject of the method is a terminal device, or a component (chip, circuit or others) configured in the terminal device, the method includes: the terminal device in a first polarization direction, The network device sends the first pilot; the terminal device sends the second pilot to the network device in the second polarization direction, and the first pilot and the second pilot are used to determine channel information between the terminal device and the network device.
  • the first pilot frequency and the second pilot frequency are used to determine the channel information between the terminal device and the network device, including: the first pilot frequency is used to determine the antenna polarization independence parameter, the antenna polarization
  • the polarization-independent parameters are used to determine the channel information between the terminal device and the network device in the second polarization direction; the first pilot, the second pilot and the antenna polarization-independent parameters are used to determine the relationship between the terminal device and the network device. channel information.
  • the first pilot may be a dense pilot
  • the second pilot may be a sparse pilot.
  • the network device can derive the antenna polarization independence parameter according to the dense pilot frequency.
  • the antenna polarization-independent parameters according to the sparse pilots By fine-tuning the antenna polarization-independent parameters according to the sparse pilots, the channel information between the terminal equipment and the network equipment in the second polarization direction corresponding to the sparse pilots can be obtained. It can be seen that it is not necessary to configure dense pilots and sparse pilots, and the channel information between the network device and the terminal device can also be derived to save pilot resources.
  • the first pilot frequency, used to determine the antenna polarization-independent parameter includes: a first pilot frequency, used to determine the first received signal vector; the first received signal vector, used to determine the A two-dimensional matrix of the delay and direction angle of each path in one or more paths; the delay, direction angle and corresponding two-dimensional matrix of each path are used to determine the increase in diameter of each path; where, The delay, bearing, and gain of each of one or more paths constitute the antenna polarization-independent parameters.
  • the network device can obtain the antenna polarization-independent parameter. Since the antenna polarization-independent parameter has a high probability of not changing with the polarization direction, the subsequent use of the antenna polarization-independent parameter can Derive the channel information between the terminal device and the network device in other polarization directions. Compared with other complex complex methods in the prior art, in this design, by performing DFT transformation on the first pilot frequency, the antenna polarization-independent parameters can be obtained, thereby reducing the computational complexity.
  • the first pilot frequency, the second pilot frequency and the antenna polarization-independent parameter are used to determine the channel information between the terminal device and the network device, including: the first pilot frequency, which is used to determine the terminal device Channel information with the network device in the first polarization direction; the second pilot frequency is used to supplement the antenna polarization-independent parameters; the supplemented antenna polarization-independent parameters are used to obtain the Channel information between the network device and the network device in the direction of change.
  • the second pilot frequency is used to supplement the antenna polarization-independent parameter, including: the second pilot frequency is used to determine that the terminal equipment is separated from the network equipment in the second polarization direction Whether there is a new path outside the path in the antenna polarization-independent parameter; when a new path appears, the delay, direction angle and gain of the new path are used to supplement the antenna polarization-independent parameter.
  • one or more paths in the antenna polarization-independent parameters are used to be deleted.
  • one or more paths in the antenna polarization-independent parameter are used to be deleted, including: the gain of each path in the antenna polarization-independent parameter, used to determine the gain of each path Power ratio; when the power ratio of a path is less than the first threshold, the path is used to be deleted from the antenna polarization-independent parameter.
  • the paths in the first polarization direction may not exist in the second polarization direction.
  • one or more paths in the antenna polarization-independent parameters derived according to the first pilot frequency in the first polarization direction can be deleted, so that the terminal device finally derived in the second polarization direction can be deleted.
  • the channel information between the network device and the network device is more accurate.
  • the energy of the second pilot frequency is used to determine the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter; when the remaining energy is greater than the second threshold, the first Two pilots are used to supplement the antenna polarization-independent parameters.
  • the network device does not directly supplement the antenna polarization-independent parameters, but firstly judges whether the above-mentioned residual energy is greater than the second threshold, and if it is greater, then supplements the antenna polarization-independent parameters, if not greater than , the antenna polarization-independent parameter can be directly assigned as the channel information between the terminal device and the network device in the second polarization direction, thereby further reducing the computational complexity.
  • the first polarization direction is different from the second polarization direction, or the first polarization direction and the second polarization direction are the same, and the first pilot frequency and the second pilot frequency pass through different antennas sent.
  • the channel information between the network device and the terminal device is used to perform at least one of scheduling, precoding, or resource allocation on the terminal device.
  • the method further includes: the terminal device receives first configuration information from the network device, where the first configuration information is used to configure the first pilot frequency in the first polarization direction for the terminal device; Second configuration information of the network device, where the second configuration information is used to configure the second pilot in the second polarization direction for the terminal device.
  • the first pilot may be a dense pilot
  • the second pilot may be a sparse pilot.
  • the network device configures the terminal device with dense pilots and sparse pilots, and measures channel information between the terminal device and the network device. Compared with configuring dense pilots for all terminal devices, pilot overhead can be reduced.
  • an embodiment of the present application provides a device, and the beneficial effects can be found in the description of the first aspect.
  • the apparatus has the function of implementing the behavior in the method embodiment of the first aspect above.
  • the functions can be implemented by executing corresponding hardware or software.
  • the hardware or software may include one or more units corresponding to the above functions.
  • the apparatus may include: a communication unit for receiving a first pilot and a second pilot from a terminal device, where the first pilot is the terminal device in a first polarization direction The second pilot is sent by the terminal device in the second polarization direction; the processing unit is configured to determine, according to the first pilot and the second pilot, whether the apparatus is compatible with the Channel information between the terminal devices.
  • an embodiment of the present application further provides a device, and the beneficial effects can be found in the description of the second aspect.
  • the apparatus has the function of implementing the behavior in the method embodiment of the second aspect.
  • the functions can be implemented by executing corresponding hardware or software.
  • the hardware or software may include one or more units corresponding to the above functions.
  • the apparatus may include: a communication unit, configured to send the first pilot frequency to the network device in the first polarization direction; the communication unit, further configured to send the first pilot to the network device in the second polarization direction
  • the network device sends a second pilot, and the first pilot and the second pilot are used to determine channel information between the apparatus and the network device.
  • a fifth aspect provides an apparatus.
  • the apparatus may be the network device in the method embodiment of the first aspect, or a chip provided in the network device.
  • the apparatus includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer program or instructions, the apparatus is made to execute the method executed by the network device in the method embodiment of the first aspect. method.
  • an apparatus is provided.
  • the apparatus may be the terminal device in the method embodiment of the second aspect, or a chip provided in the terminal device.
  • the apparatus includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions, and the processor is coupled with the memory and the communication interface, and when the processor executes the computer program or instructions, the apparatus is made to execute the method executed by the terminal device in the method embodiment of the second aspect. method.
  • a computer program product comprising: computer program code, when the computer program code is executed, the method performed by the network device in the above-mentioned first aspect is executed.
  • a computer program product includes: computer program code, when the computer program code is executed, the method performed by the terminal device in the above second aspect is executed.
  • the present application provides a chip system, where the chip system includes a processor for implementing the function of the network device in the method of the first aspect above.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present application provides a chip system, where the chip system includes a processor for implementing the functions of the terminal device in the method of the second aspect above.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method executed by the network device in the first aspect is implemented.
  • the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method executed by the terminal device in the second aspect above is implemented.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a 2M*2N-dimensional horizontal/vertical dual-polarization matrix provided by an embodiment of the present application;
  • FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 4 , FIG. 5 , and FIG. 6 are schematic diagrams of resource configuration of different pilots provided by the embodiments of the present application.
  • FIG. 7 is a flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the performance of reconstructing H HH with different algorithms provided in an embodiment of the present application.
  • FIG. 9 is a schematic performance diagram of an algorithm under different user requirements provided by an embodiment of the present application.
  • FIG. 10 is a schematic performance diagram of an algorithm under different numbers of paths provided by an embodiment of the present application.
  • FIG. 11 is a schematic performance diagram of an algorithm under different system antenna configurations provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • FIG. 1 shows an example diagram of a communication system 100 to which the embodiments of the present application can be applied.
  • the communication system 100 may include at least one network device 110 .
  • the network device 110 may be a device that communicates with terminal devices, such as a base station or a base station controller. Each network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area (cell).
  • the network device 110 may be an access network device, and the access network device may also be referred to as a radio access network (radio access network, RAN) device, which is a device that provides a wireless communication function for terminal devices.
  • radio access network radio access network
  • Access network equipment includes, but is not limited to, the next generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B ( node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), base band unit (base band unit, BBU), sending and receiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), and/or mobile switching center, etc.
  • generation nodeB generation nodeB, gNB
  • evolved node B evolved node B
  • eNB evolved node B
  • RNC radio network controller
  • node B node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station for example, home evolved nodeB, or home node B, HNB
  • base band unit base band unit
  • the access network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the network device may be a relay station, an access point, a vehicle-mounted device, a terminal device, a wearable device, and a network device in a future 5G network or a network device in a future evolved public land mobile network (PLMN), etc. .
  • the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.
  • the communication system 100 also includes one or more terminal devices 120 located within the coverage of the network device 110 .
  • the terminal device 120 may be mobile or stationary.
  • the terminal device 120 may be referred to as a terminal for short, and is a device with a wireless transceiver function.
  • Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal device can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control ( Wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security (transportation) wireless terminal equipment in safety), wireless terminal equipment in a smart city, and/or wireless terminal equipment in a smart home.
  • a virtual reality virtual reality, VR
  • augmented reality, AR augmented reality
  • industrial control Wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security (transportation) wireless terminal equipment in safety
  • wireless terminal equipment in a smart city and/or wireless terminal equipment in a smart home.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices or computing devices, in-vehicle devices, wearable devices, terminal devices in the future fifth generation (the 5th generation, 5G) network or future evolution of the public land mobile network (PLMN) in the terminal equipment terminal equipment, etc.
  • the terminal device may also sometimes be referred to as user equipment (UE), and the terminal device 120 may communicate with multiple access network devices of different technologies.
  • the access network device can communicate with the access network device supporting 5G, and it can also be connected with the access network device supporting LTE and the access network device supporting 5G.
  • the embodiments of the present application are not limited.
  • the apparatus for implementing the function of the terminal device may be a terminal device; it may also be an apparatus capable of supporting the terminal device to implement the function, such as a chip system, and the apparatus may be installed in the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device 110 and the terminal device 120 may perform data transmission through air interface resources.
  • the air interface resources may include at least one of time domain resources, frequency domain resources, code domain resources and space resources.
  • the network device 110 may send control information to the terminal device 120 through a control channel, such as a physical downlink control channel (PDCCH), so as to provide the terminal device 120 with control information.
  • a control channel such as a physical downlink control channel (PDCCH)
  • Allocate transmission parameters of data channels such as allocating resources of physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH).
  • control information may indicate a time-domain symbol and/or a frequency-domain resource block (RB) to which the data channel is mapped, and the network device 110 and the terminal device 120 use the data channel on the allocated time-frequency resource.
  • data transmission may include downlink data transmission and/or uplink data transmission, the transmission of downlink data (such as data carried by PDSCH) may refer to the transmission of data by the network device 110 to the terminal device 120, and the transmission of uplink data (such as data carried by PUSCH) may refer to the transmission of terminal data.
  • Device 120 sends data to network device 110 .
  • the data can be generalized data, such as user data, system messages, broadcast information, or other information.
  • Figure 1 illustrates a network device and two terminal devices.
  • the communication system 100 may include multiple network devices, and the coverage of one network device may include other numbers of terminal devices, which are not limited by the comparison of the embodiments of the present application.
  • At least one item (a) of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or multiple .
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like are not necessarily different.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • a dual-polarized antenna array may be used between the network device and the terminal device.
  • a 2M*2N dimensional horizontal/vertical dual polarization matrix As shown in Figure 2, a 2M*2N dimensional horizontal/vertical dual polarization matrix.
  • the transmitting end such as network equipment
  • the receiving end such as terminal equipment
  • N dual-polarization units.
  • Each dual polarized unit consists of a vertical antenna and a horizontal antenna.
  • the network device needs to estimate the channel information between multiple polarized antenna pairs, such as ( VB , VR), ( VB , HR ), ( HB , VR ), ( HB , HR ) and so on.
  • V represents a vertically polarized antenna
  • H represents a horizontally polarized antenna
  • subscript B represents network equipment
  • subscript R represents terminal equipment.
  • an embodiment of the present application provides a communication method, the method includes: a network device receives a first pilot and a second pilot from a terminal device; wherein the first pilot is the terminal device in a first polarization direction The second pilot is sent by the terminal device in the second polarization direction; the network device determines the channel information between the network device and the terminal device according to the first pilot and the second pilot. For example, the network device can determine the channel information between the terminal device and the network device in the first polarization direction according to the first pilot frequency; the network device can determine the terminal device in the second polarization direction according to the first pilot frequency and the second pilot frequency. Channel information between the direction and the network device.
  • the first pilot may be a dense pilot
  • the second pilot may be a sparse pilot. Because in the embodiment of the present application, it is not necessary to configure all pilots as dense pilots, but sparse pilots are configured, and channel information between the terminal device and the network device in the second polarization direction can also be obtained, thereby reducing system overhead.
  • the terminal device in this embodiment of the present application may also be a component (chip, circuit or other, etc.) configured in the terminal device
  • the network device may also be a component (chip, circuit or other) configured in the network device ), etc., without limitation.
  • a flow of a communication method including at least:
  • step 301 The network device configures dense pilots and sparse pilots for the terminal device.
  • the network device may send first configuration information and second configuration information to the terminal device, where the first configuration information is used for configuring dense pilots in the first polarization direction for the terminal device, and the second configuration information is used for The terminal device is configured with sparse pilots in the second polarization direction.
  • the pilot may be a sounding reference signal (sounding reference signal, SRS).
  • the network device can obtain the polarization mode or polarization information of the antenna array on the terminal device side through the terminal device report or other default methods; after that, the network device can configure various uplink reference signal SRS parameters for different polarization direction antennas mode, including the time-frequency resources and transmission period occupied by the SRS.
  • the network device can configure a resource element based (resource element, RE) configuration. ), but the resources or SRS densities occupied by SRBs in different polarization directions are different.
  • the network device may configure a reference signal based on a sub-band (SB), and the SRBs in different polarization directions can be configured with reference signals.
  • the occupied resources or the density of SRS are different.
  • the SRS can be configured with a full bandwidth, that is, all the resources of the full bandwidth are used to transmit the SRB.
  • the SRS can be configured with a partial bandwidth or a sparse bandwidth, that is, the resources of the partial bandwidth or the sparse bandwidth are used to transmit the SRB.
  • the network device can first obtain full-bandwidth and high-precision channel information in the vertical polarization direction.
  • the network device when the terminal device has multiple antennas in the same polarization direction, the network device can use multiple antennas in different polarization directions and different antennas in the same polarization direction.
  • a SRS resource configuration method As shown in FIG. 6 , for example, the terminal device includes two vertically polarized antennas V1 and V2 in the vertical polarization direction, and includes two horizontally polarized antennas H1 and H2 in the horizontal polarization direction. As shown in a) in FIG. 6 , different SRS resources can be configured for different antennas in the same time slot.
  • dense SRS resources can be configured for the vertically polarized antenna V1, and sparse SRS resources can be configured for other antennas; b) to d) in FIG.
  • the transmission mode is used; the time slot where the dense SRS is located can be frequency-division multiplexed for multiple terminal equipments.
  • Step 302 The network device receives dense pilots and sparse pilots from the terminal equipment; wherein the dense pilots are sent by the terminal equipment in the first polarization direction, and the sparse pilots are sent by the terminal equipment in the second polarization direction of.
  • the first polarization direction is different from the second polarization direction.
  • the first polarization direction may be the vertical polarization direction V
  • the second polarization direction may be the horizontal polarization direction H.
  • the first polarization direction is the same as the second polarization direction, and dense pilots and sparse pilots are sent through different antennas.
  • the first polarization direction and the second polarization direction are the same, and both can be vertical polarization directions, but dense pilots are sent through vertical antenna V1, and sparse pilots are sent through vertical antenna V2 of.
  • Step 303 The network device determines the channel information between the network device and the terminal device according to the dense pilot frequency and the sparse pilot frequency.
  • the network device may perform at least one of scheduling, precoding, or resource allocation for the terminal device according to channel information between the network device and the terminal device.
  • the network device may measure the dense pilots to obtain an antenna polarization-independent parameter, where the antenna polarization-independent parameter is used to determine the relationship between the terminal device and the network device in the second polarization direction. channel information between.
  • the network device may determine the first received signal vector according to the received dense pilots; the network device performs a two-dimensional discrete Fourier transform (discrete fourier transform, DFT) on the first received signal vector to obtain one or more The two-dimensional matrix of the delay and direction angle of each path in the path; the network device determines the gain of each path according to the delay, direction angle and corresponding two-dimensional matrix of each path; among them, one or more paths
  • DFT discrete Fourier transform
  • the above process is discussed in detail by taking as an example how the network device extrapolates the horizontal-horizontal polarized inter-antenna channel (H HH ) using the vertical-vertically polarized inter-antenna channel (H VV ).
  • the network device may determine the above-mentioned antenna polarization-independent parameters by using a Newtonized orthogonal matching pursuit (NOMP) algorithm.
  • NOMP Newtonized orthogonal matching pursuit
  • the NOMP algorithm is an iterative-based algorithm. In each iteration, dense pilots are used to find the delay and the angle of arrival, calculate the gain, and optimize and update these three parameters. In the first iteration, the NOMP algorithm operates in the following four steps:
  • the network device can receive the dense pilot y vv from the terminal device, the ratio of the resources occupied by the dense pilot and the sparse pilot is u:1, and all the assigned subcarriers and the received dense pilot can be stacked into a vector :
  • ⁇ ( ⁇ l ) contains the information of the reaching angle, is the steering vector of the CLA array;
  • p( ⁇ l ) contains the delay information
  • the angle of arrival of the lth path can be roughly estimated and delay then through the angle of arrival and delay and its corresponding angle and delay matrix, calculate the gain of the path
  • the horizontal axis of the two-dimensional matrix represents the delay, and each grid represents a normalized delay value
  • the vertical axis of the two-dimensional matrix represents the direction angle
  • each grid represents a normalized angle value
  • the elements in represent the energy of this path; if there is energy in the grid where the horizontal axis delay and the vertical axis angle intersect, it means that there is a corresponding path l.
  • delay, direction angle and gain can determine a path.
  • Cyclic optimization Every time a path is found, a single optimization step is used cyclically to optimize the direction angles and delays of all the detected paths, and the estimated triplet set is redefined with the optimized values.
  • the network device performs DFT transformation on the received vector of dense pilots to obtain a two-dimensional matrix; according to the two-dimensional matrix, a path is searched, and each time a path is found, that is, a rough Estimate the direction angle, delay and gain of the path, and form the triplet of the path (gain, direction angle, delay); then, perform a single optimization and parameter update for the triplet; judge the cost function at this time Whether the value of is reduced to a predetermined threshold, if it is reduced to a predetermined threshold, stop detecting new paths; otherwise, using a two-dimensional matrix, continue to detect new paths until the value of the cost function decreases below the predetermined threshold. Finally, the gain, time delay and direction angle of all detected paths constitute the antenna polarization-independent parameters.
  • the network device determines the channel information between the network device and the terminal device according to the parameters of dense pilots, sparse pilots and antenna polarization independence.
  • the channel information between the network device and the terminal device includes: channel information between the terminal device and the network device in the first polarization direction, and channel information between the terminal device and the network device in the second polarization direction.
  • the network device may measure dense pilots to obtain channel information between the terminal device and the network device in the first polarization direction.
  • the network device may determine the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter from the energy of the second pilot frequency; determine the magnitude of the remaining energy and the second threshold; if the remaining energy is greater than the first If the remaining energy is less than or equal to the second threshold, the network device can determine that the terminal device is in the second polarization direction
  • the channel information between the above and the network device is the above-mentioned antenna polarization-independent parameter.
  • the network device may also delete one or more paths in the antenna polarization independence parameter, and the deletion process may include: the network device according to the antenna polarization independence parameter of each path. Gain, to determine the power ratio of each path; when the power ratio of a path is less than the first threshold, the network device deletes the path in the antenna polarization independence parameter.
  • the angle of arrival, time delay and number of paths may remain unchanged or slightly change in the polarization direction to be pushed; some paths may It exists in one polarization direction, but not in the other polarization direction. It is necessary to first decide which situation the initial parameters fall into, and then apply the corresponding method to optimize the parameters.
  • H VV pushing H HH as an example, the specific steps are as follows:
  • Stopping criteria if but It can be directly used to reconstruct H HH , that is, the channel information between the terminal device and the network device in the horizontal direction H is:
  • the optimized Reconstruct H HH that is, the channel information between the terminal device and the network device in the horizontal polarization direction H is optimized
  • the power ratio of the lth path is: If ⁇ l is less than a certain threshold ⁇ (0,1], remove the path l from the antenna polarization-independent parameters;
  • H HH that is, the channel information between the terminal device and the network device in the horizontal polarization direction
  • the use of flexible pilot frequency configuration can realize the extrapolation of channels between different polarizations or between different antennas of the same polarization for network equipment, which improves the available resources, not only saves the overhead for channel measurement, but also reduces the cost of channel measurement.
  • the computational complexity of obtaining full channel information can be reduced.
  • a flow of a communication method including: a base station notifying a terminal device of an SRS pattern in each polarization direction.
  • the base station may configure different SRS patterns for the terminal equipment in different polarization directions.
  • dense SRS is configured for the terminal device in the first polarization direction
  • sparse SRS is configured for the terminal device in the second polarization direction.
  • the terminal equipment transmits SRS according to the configuration in each polarization direction.
  • the base station uses the SRS in one polarization direction to estimate the antenna polarization correlation parameters, for example, using the dense SRS to estimate the antenna polarization independence parameters, etc.; the base station uses the SRS in other polarization directions to estimate the above-mentioned antenna polarization Fine-tune the polarization-independent parameters to obtain channel information in other polarization directions; the base station reconstructs channels in other polarization directions.
  • the above-mentioned process of fine-tuning the antenna polarization-independent parameters may include: first, directly using the above-mentioned antenna polarization-independent parameters as channel information in other polarization directions; judging whether the channels in other polarization directions can be reconstructed at this time ; If yes, the fine-tuning ends; if not, fine-tune the value of the antenna polarization-independent parameter.
  • the fine-tuning process that is, the process of supplementing the antenna polarization-independent parameters in the above-mentioned embodiments.
  • Figure 8 shows the comparison of the HHH performance of the four schemes when the H VV and H HH paths have exactly the same gain, angle of arrival and delay;
  • Figure 9 shows the H VV and H HH paths It has exactly the same angle of arrival, but the gain of the two polarized channels is different—each path gain is a random number with a mean value of 0 and a variance of 1; at the same time, the delay of H HH is 5% compared to the delay of H VV In the case of fluctuations within the range, the four schemes reconstruct the HHH performance comparison chart.
  • the LS estimation is in the low signal-to-noise ratio (signal-to-noise ratio).
  • the performance in the noise ratio, SNR) region is poor, and the MMSE method greatly improves the estimation accuracy.
  • the reconstruction in the signal-to-noise ratio region can always achieve a performance similar to that of the NOMP estimation.
  • Figure 10 shows the performance comparison of the polarization extrapolation method when the number of paths is different. It can be found that the reconstruction performance of this method decreases slightly with the increase of the number of paths.
  • Figure 11 shows the performance comparison of the polarization extrapolation method when the number of dual-polarized units of the network equipment is different. It can be seen that when the polarization extrapolation method is used for channel reconstruction, the reconstruction accuracy will vary with the number of antenna elements of the network equipment. increase and increase, indicating that the method in the embodiment of the present application is applicable to a massive MIMO system.
  • the improvements in the embodiments of the present application mainly focus on two aspects: different pilot configurations are used on different polarized channels, which reduces the system overhead of pilots; at the same time, the network equipment uses the relationship between different polarized channels to The extrapolation reduces the computational complexity, power consumption and delay of the network device, so that the network device can process more services more efficiently.
  • FIG. 12 is a schematic block diagram of an apparatus 1100 provided by an embodiment of the present application, which is used to implement the functions of a network device or a terminal device in the foregoing method embodiment.
  • the apparatus may be a software unit or a system-on-a-chip.
  • the system-on-chip may consist of chips, or may include chips or other discrete devices.
  • the apparatus may include a communication unit 1101 for communicating with the outside.
  • the apparatus may also include a processing unit 1102 for processing.
  • the foregoing apparatus 1100 is configured to implement the steps of the network device in the foregoing method embodiments.
  • the apparatus 1100 may be a network device, or may be a chip or circuit configured in the network device.
  • the communication unit 1101 is configured to perform the above-mentioned operations related to sending and receiving of the network device, and the processing unit 1102 is configured to perform the operations related to the processing of the above-mentioned network device.
  • the communication unit 1101 is configured to receive a first pilot and a second pilot from a terminal device, the first pilot is sent by the terminal device in a first polarization direction, and the second pilot is sent by the terminal device in the second polarization direction; the processing unit 1102 is configured to determine the channel information between the network device and the terminal device according to the first pilot frequency and the second pilot frequency .
  • determining the channel information between the network device and the terminal device according to the first pilot and the second pilot includes: measuring the first pilot , obtain the antenna polarization independence parameter, the antenna polarization independence parameter is used to determine the channel information between the terminal device and the network device in the second polarization direction; according to the first pilot frequency, The second pilot frequency and the antenna polarization independence parameter determine channel information between the network device and the terminal device.
  • the above-mentioned measuring the first pilot frequency to obtain the antenna polarization-independent parameter includes: determining the first received signal vector according to the received first pilot frequency; Discrete Fourier transform DFT to obtain a two-dimensional matrix including the time delay and direction angle of each path in one or more paths; according to the time delay, direction angle of each path and its corresponding two-dimensional matrix, determine The gain of each path; wherein, the delay, direction angle and gain of each path in the one or more paths constitute the antenna polarization-independent parameter.
  • determining the channel information between the network device and the terminal device according to the first pilot, the second pilot and the antenna polarization independence parameter includes: according to the first pilot according to the second pilot frequency, to determine the channel information between the terminal equipment and the network equipment in the first polarization direction; according to the second pilot frequency, supplement the antenna polarization independence parameter; according to the supplemented antenna polarization
  • the independent parameter is used to obtain the channel information between the terminal device and the network device in the second polarization direction.
  • supplementing the antenna polarization-independent parameter according to the second pilot frequency includes: determining, according to the received second pilot frequency, that the terminal device is in the second polarization Whether a new path appears between the direction and the network device except the path in the antenna polarization-independent parameter; when a new path appears, determine the delay, direction angle and gain of the new path; The antenna polarization independent parameter is supplemented according to the delay, direction angle and gain of the new path.
  • the processing unit 1102 is further configured to: delete one or more paths in the antenna polarization-independent parameter.
  • deleting one or more paths in the antenna polarization-independent parameter includes: determining each path according to the gain of each path in the antenna polarization-independent parameter When the power ratio of a path is smaller than the first threshold, the path is deleted from the antenna polarization-independent parameter.
  • the processing unit 1102 is further configured to: determine the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter from the energy of the second pilot frequency; when the remaining energy is greater than At the second threshold, the antenna polarization-independent parameter is supplemented according to the second pilot frequency.
  • the first polarization direction is different from the second polarization direction, or the first polarization direction and the second polarization direction are the same, and the first pilot frequency and the second pilot frequency The frequency is transmitted through different antennas.
  • the processing unit 1102 is further configured to: perform at least one of scheduling, precoding, or resource allocation on the terminal device according to channel information between the network device and the terminal device.
  • the communication unit 1101 is further configured to: send first configuration information to the terminal device, where the first configuration information is used to configure the first pilot frequency in the first polarization direction for the terminal device ; sending second configuration information to the terminal device, where the second configuration information is used to configure the second pilot frequency in the second polarization direction for the terminal device.
  • the foregoing apparatus 1100 is configured to implement the steps of the terminal device in the foregoing method embodiments.
  • the apparatus 1100 may be a terminal device, or may be a chip or circuit configured in the terminal device.
  • the communication unit 1101 is configured to perform the above-mentioned operations related to sending and receiving of the terminal device, and the processing unit 1102 is configured to perform the above-mentioned operations related to the processing of the terminal device.
  • the communication unit 1101 is configured to send a first pilot to a network device in a first polarization direction, and to send a second pilot to the network device in a second polarization direction, the first pilot and all The second pilot is used to determine channel information between the terminal device and the network device.
  • the first pilot frequency and the second pilot frequency are used to determine channel information between the terminal device and the network device, including: the first pilot frequency, used for determining an antenna polarization independence parameter, where the antenna polarization independence parameter is used to determine channel information between the terminal device and the network device in the second polarization direction; the first pilot frequency, the The second pilot frequency and the antenna polarization-independent parameter are used to determine channel information between the terminal device and the network device.
  • the first pilot frequency is used to determine the antenna polarization-independent parameter, including: the first pilot frequency is used to determine the first received signal vector; the first received signal vector is used to determine a or a two-dimensional matrix of the time delay and direction angle of each path in the multiple paths; the time delay, direction angle and its corresponding two-dimensional matrix of each path are used to determine the increase in diameter of each path; wherein , the time delay, direction angle and gain of each of the one or more paths constitute the antenna polarization-independent parameter.
  • the first pilot, the second pilot and the antenna polarization invariant parameter are used to determine the channel information between the terminal device and the network device, including: the first pilot, used to determine the channel information between the terminal device and the network device in the first polarization direction; the second pilot frequency is used to supplement the antenna polarization independence parameter; the supplemented antenna polarization The independence parameter is used to obtain the channel information between the terminal device and the network device in the second polarization direction.
  • the second pilot frequency is used to supplement the antenna polarization-independent parameter, including: the second pilot frequency is used to determine that the terminal device is at the second pole Whether there is a new path between the polarization direction and the network device except the path in the antenna polarization-independent parameter; when a new path appears, the delay, direction angle and gain of the new path, Used to supplement the antenna polarization independent parameter.
  • one or more paths in the antenna polarization-independent parameter are used to be deleted.
  • one or more paths in the antenna polarization-independent parameter are used to be deleted, including: a gain of each path in the antenna polarization-independent parameter, used to determine The power ratio of each path; when the power ratio of one path is smaller than the first threshold, the path is used to be deleted from the antenna polarization-independent parameter.
  • the energy of the second pilot frequency is used to determine the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter; when the remaining energy is greater than the second threshold, The second pilot frequency is used to supplement the antenna polarization-independent parameter.
  • the first polarization direction is different from the second polarization direction, or the first polarization direction and the second polarization direction are the same, and the first pilot frequency and the second pilot frequency The frequency is transmitted through different antennas.
  • the channel information between the network device and the terminal device is used to perform at least one of scheduling, precoding, or resource allocation on the terminal device.
  • the communication unit 1101 is further configured to: receive first configuration information from the network device, where the first configuration information is used to configure the terminal device with the first guide in the first polarization direction. and receiving second configuration information from the network device, where the second configuration information is used to configure a second pilot in the second polarization direction for the terminal device.
  • the division of units in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more units can be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the function of the communication unit in the above embodiments may be implemented by a transceiver, and the function of the processing unit may be implemented by a processor.
  • the transceiver may include a transmitter and/or a receiver, etc., for respectively implementing the functions of the transmitting unit and/or the receiving unit.
  • FIG. 13 The following description is given with reference to FIG. 13 as an example.
  • the communication apparatus 1200 shown in FIG. 13 includes at least one processor 1201 .
  • Communication apparatus 1200 may also include at least one memory 1202 for storing program instructions and/or data.
  • Memory 1202 and processor 1201 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 1201 may cooperate with the memory 1202 , the processor 1201 may execute program instructions stored in the memory 1202 , and at least one of the at least one memory 1202 may be included in the processor 1201 .
  • the apparatus 1200 may also include a communication interface 1203 for communicating with other devices through a transmission medium, so that the communication apparatus 1200 may communicate with other devices.
  • the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
  • the transceiver when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; it may also be a transceiver integrating a transceiver function, or an interface circuit.
  • connection medium among the above-mentioned processor 1201 , memory 1202 , and communication interface 1203 is not limited in the embodiments of the present application.
  • the memory 1202, the processor 1201, and the communication interface 1203 are connected through a communication bus 1204 in FIG. 13.
  • the bus is represented by a thick line in FIG. 13, and the connection between other components is only a schematic illustration. , not as a limitation.
  • the bus may include an address bus, a data bus, a control bus, and the like. For convenience of presentation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • the apparatus 1200 is configured to implement the steps performed by the network device in the foregoing method embodiments.
  • the communication interface 1203 is configured to perform the transceiving related operations of the network device in the above method embodiments
  • the processor 1201 is configured to perform the processing related operations of the network device in the above method embodiments.
  • the communication interface 1203 is used to receive a first pilot and a second pilot from a terminal device, the first pilot is sent by the terminal device in the first polarization direction, and the second pilot is sent by the terminal device in the second polarization direction; the processor 1201 is configured to determine the channel information between the network device and the terminal device according to the first pilot and the second pilot .
  • determining the channel information between the network device and the terminal device according to the first pilot and the second pilot includes: measuring the first pilot , obtain the antenna polarization independence parameter, the antenna polarization independence parameter is used to determine the channel information between the terminal device and the network device in the second polarization direction; according to the first pilot frequency, The second pilot frequency and the antenna polarization independence parameter determine channel information between the network device and the terminal device.
  • measuring the first pilot frequency to obtain an antenna polarization-independent parameter includes: determining a first received signal vector according to the received first pilot frequency; performing a two-dimensional discrete process on the first received signal vector Fourier transform DFT to obtain a two-dimensional matrix including the time delay and direction angle of each path in one or more paths; according to the time delay, direction angle of each path and its corresponding two-dimensional matrix, determine each path. gain of each path; wherein, the delay, direction angle and gain of each path in the one or more paths constitute the antenna polarization-independent parameter.
  • determining the channel information between the network device and the terminal device according to the first pilot, the second pilot and the antenna polarization independence parameter includes: according to the first pilot , determine the channel information between the terminal device and the network device in the first polarization direction; according to the second pilot frequency, supplement the antenna polarization independence parameter; according to the supplemented antenna polarization independence
  • the characteristic parameter is used to obtain the channel information between the terminal device and the network device in the second polarization direction.
  • supplementing the antenna polarization-independent parameter according to the second pilot frequency includes: determining, according to the received second pilot frequency, that the terminal device is in the second polarization Whether a new path appears between the direction and the network device except the path in the antenna polarization-independent parameter; when a new path appears, determine the delay, direction angle and gain of the new path; The antenna polarization independent parameter is supplemented according to the delay, direction angle and gain of the new path.
  • the processor 1201 is further configured to: delete one or more paths in the antenna polarization-independent parameter.
  • deleting one or more paths in the antenna polarization-independent parameter includes: determining each path according to the gain of each path in the antenna polarization-independent parameter When the power ratio of a path is smaller than the first threshold, the path is deleted from the antenna polarization-independent parameter.
  • the processor 1201 is further configured to: determine the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter from the energy of the second pilot frequency; when the remaining energy is greater than At the second threshold, the antenna polarization-independent parameter is supplemented according to the second pilot frequency.
  • the first polarization direction is different from the second polarization direction, or the first polarization direction and the second polarization direction are the same, and the first pilot frequency and the second polarization direction are the same.
  • the two pilots are sent through different antennas.
  • the processor 1201 is further configured to: perform at least one of scheduling, precoding, or resource allocation on the terminal device according to channel information between the network device and the terminal device.
  • the communication interface 1203 is further configured to: send first configuration information to the terminal device, where the first configuration information is used to configure the first pilot in the first polarization direction for the terminal device ; sending second configuration information to the terminal device, where the second configuration information is used to configure the second pilot frequency in the second polarization direction for the terminal device.
  • the apparatus 1200 is configured to implement the steps performed by the terminal device in the foregoing method embodiments.
  • the communication interface 1203 is used to perform the transceiving related operations of the terminal device in the above embodiments
  • the processor 1201 is used to perform the processing related operations of the terminal device in the above embodiments.
  • the communication interface 1203 is configured to send a first pilot to a network device in a first polarization direction, and to send a second pilot to the network device in a second polarization direction, the first pilot and all The second pilot is used to determine channel information between the terminal device and the network device.
  • the first pilot frequency and the second pilot frequency are used to determine channel information between the terminal device and the network device, including: the first pilot frequency, used for determining an antenna polarization independence parameter, where the antenna polarization independence parameter is used to determine channel information between the terminal device and the network device in the second polarization direction; the first pilot frequency, the The second pilot frequency and the antenna polarization-independent parameter are used to determine channel information between the terminal device and the network device.
  • the first pilot frequency is used to determine the antenna polarization-independent parameter, including: the first pilot frequency is used to determine the first received signal vector; the first received signal vector is used to determine a or a two-dimensional matrix of the time delay and direction angle of each path in the multiple paths; the time delay, direction angle and its corresponding two-dimensional matrix of each path are used to determine the increase in diameter of each path; wherein , the time delay, direction angle and gain of each of the one or more paths constitute the antenna polarization-independent parameter.
  • the first pilot, the second pilot and the antenna polarization invariant parameter are used to determine the channel information between the terminal device and the network device, including: the first pilot, used to determine the channel information between the terminal device and the network device in the first polarization direction; the second pilot frequency is used to supplement the antenna polarization independence parameter; the supplemented antenna polarization The independence parameter is used to obtain the channel information between the terminal device and the network device in the second polarization direction.
  • the second pilot frequency is used to supplement the antenna polarization-independent parameter, including: the second pilot frequency is used to determine that the terminal device is at the second pole Whether there is a new path between the polarization direction and the network device except the path in the antenna polarization-independent parameter; when a new path appears, the delay, direction angle and gain of the new path, Used to supplement the antenna polarization independent parameter.
  • one or more paths in the antenna polarization-independent parameter are used to be deleted.
  • one or more paths in the antenna polarization-independent parameter are used to be deleted, including: the gain of each path in the antenna polarization-independent parameter is used to determine the each path.
  • the path is used to be deleted from the antenna polarization-independent parameter.
  • the energy of the second pilot frequency is used to determine the remaining energy after removing the energy in one or more paths in the antenna polarization-independent parameter; when the remaining energy is greater than the second threshold, The second pilot frequency is used to supplement the antenna polarization-independent parameter.
  • the first polarization direction is different from the second polarization direction, or the first polarization direction and the second polarization direction are the same, and the first pilot frequency and the second pilot frequency The frequency is transmitted through different antennas.
  • the channel information between the network device and the terminal device is used to perform at least one of scheduling, precoding, or resource allocation on the terminal device.
  • the communication interface 1203 is further configured to: receive first configuration information from the network device, where the first configuration information is used to configure the terminal device with the first guide in the first polarization direction. and receiving second configuration information from the network device, where the second configuration information is used to configure a second pilot in the second polarization direction for the terminal device.
  • an embodiment of the present application further provides an apparatus, where the apparatus is configured to execute the method in the above method embodiment.
  • a computer-readable storage medium comprising a program, when the program is executed by a processor, the methods in the above method embodiments are performed.
  • a computer program product comprising computer program code that, when executed on a computer, causes the computer to implement the methods in the above method embodiments.
  • a chip comprising: a processor, the processor is coupled with a memory, the memory is used for storing a program or an instruction, when the program or instruction is executed by the processor, the device causes the apparatus to perform the above method embodiments Methods.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may be implemented or executed
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM).
  • Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server or data center by wire (eg coaxial cable, optical fiber, 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, etc. that includes one or more available media integrated.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital video discs (DVD)), or semiconductor media (eg, SSDs), and the like.

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Abstract

一种通信方法及装置，该方法包括：网络设备接收来自终端设备的第一导频和第二导频，第一导频是终端设备在第一极化方向上发送的，第二导频是终端设备在第二极化方向上发送的；网络设备根据第一导频和第二导频，确定网络设备与终端设备间的信道信息。可选的，上述第一导频可为密集导频，第二导频可以为稀疏导频。利用灵活的导频配置，可实现不同极化方向或同一极化方向不同天线间信道的外推，提高了资源利用率，降低信道测量开销。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2020年08月18日提交中国专利局、申请号为202010833392.5、申请名称为“一种通信方法及装置”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
本申请实施例涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
大规模多输入多输出(multi input multi output，MIMO)技术作为5G的关键技术之一，在网络设备侧使用大型天线阵列，同时服务于多个终端设备，以获得更大的空间复用增益。同时，为了解决网络设备的实际部署问题，比如，网络设备阵列天线的迎风面及天线阵列规模大小的选择等。在网络设备侧采用基于双极化的天线阵列。采用双极化天线可以在天线单元数目翻倍的情况下，有效缩减阵列尺寸，并获得近似两倍于单极化天线的信道容量。
在大规模MIMO中，采用双极化天线会给信道状态信息(channel state information，CSI)的获取，带来新的挑战。例如，在双极化系统中，由于天线数量翻倍，且不同极化天线之间信道存在差异，导致信道状态信息CSI获取中的待估信道因子数量翻倍，增大了用户信道重建的难度。在双极化系统中，每个双极化单元由一个垂直天线和一个水平天线组成。则基站需要估计不同极化方向上的信道信息。如何获取不同极化方向上的信道信息是本申请实施例待解决的技术问题。
发明内容
本申请实施例提供一种通信方法及装置，以获取不同极化方向上的信道信息。
第一方面，提供一种通信方法，该通信方法的执行主体为网络设备，还可以为配置于网络设备中的部件(例如，芯片、电路或其它等)，该方法包括：网络设备接收来自终端设备的第一导频和第二导频，第一导频是终端设备在第一极化方向上发送的，第二导频是终端设力城第二极化方向上发送的；网络设备根据第一导频和第二导频，确定网络设备与终端设备间的信道信息。可选的，第一导频可以为密集导频，第二导频可以为稀疏导频，上述网络设备与终端设备间的信道信息可以包括终端设备在第一极化方向上与网络设备间的信道信息，以及终端设备在第二极化方向上与网络设备间的信道信息。
通过实施上述方法，利用灵活的导频配置，可实现不同极化方向间或同一极化不同天线间信道的外推，提高了资源利用率，节省信道测量的开销，降低获得全信道信息的计算复杂度。
在一种可能的实现方式中，网络设备根据第一导频和第二导频，确定网络设备与终端设备间的信道信息，包括：网络设备对第一导频进行测量，获得天线极化无关性参数，天线极化无关性参数用于确定终端设备在第二极化方向上与网络设备之间的信道信息；网络 设备根据第一导频，第二导频和天线极化无关性参数，确定网络设备与终端设备间的信道信息。例如，网络设备可根据第一导频，确定终端设备在第一极化方向上与网络设备间的信道信息。网络设备可根据第二导频，对天线极化无关性参数进行微调，得到终端设备在第二极化方向上与网络设备间的信道信息。
可选的，第一导频可以为密集导频，第二导频可以为稀疏导频。通过实施上述方法，网络设备根据密集导频，可推导天线极化无关性参数。根据稀疏导频，对天线极化无关性参数进行微调，即可得到终端设备在稀疏导频所对应的第二极化方向上与网络设备间的信道信息。可见，无需都配置密集导频，配置稀疏导频，也可推导得到网络设备与终端设备间的信道信息，节省导频资源。
在一种可能的实现方式中，网络设备对第一导频进行测量，获得天线极化无关性参数，包括：网络设备根据所接收的第一导频，确定第一接收信号向量；网络设备对第一接收信号向量进行二维离散傅里叶变换DFT，得到包括一条或多条路径中每条路径的时延和方向角的二维矩阵；网络设备根据每条路径的时延、方向角和其对应的二维矩阵，确定每条路径的增益；其中，一条或多条路径中每条路径的时延、方向角和增益，组成天线极化无关性参数。
通过实施上述方法，网络设备可得到天线极化无关性参数，由于所述天线极化无关性参数大概率是不随着极化方向而改变的，因此，后续利用该天线极化无关性参数，可推导终端设备在其它极化方向上与网络设备间的信道信息。相对于现有技术中的其它复杂复法，在该设计中，对第一导频，进行DFT变换，即可得到天线极化无关性参数，降低计算复杂度。
在一种可能的实现方式中，网络设备根据第一导频，第二导频和天线极化无关性参数，确定网络设备与终端设备间的信道信息，包括：网络设备根据第一导频，确定终端设备在第一极化方向上与网络设备间的信道信息；网络设备根据第二导频，对天线极化无关性参数进行增补；网络设备根据增补的天线极化无关性参数，得到终端设备在第二极化方向上与网络设备间的信道信息。
在一种可能的实现方式中，网络设备根据第二导频，对天线极化无关性参数进行增补，包括：网络设备根据所接收的第二导频，确定终端设备在第二极化方向上与网络设备间除天线极化无关性参数中的路径外是否有新的路径出现；当有新的路径出现时，网络设备确定新路径的时延、方向角和增益；网络设备根据新路径的时延、方向角和增益，对天线极化无关性参数进行增补。
在一种可能的实现方式中，还包括：网络设备删除天线极化无关性参数中的一条或多条路径。
在一种可能的实现方式中，网络设备删除天线极化无关性参数中的一条或多条路径，包括：网络设备根据天线极化无关性参数中每条路径的增益，确定每条路径的功率比；当一条路径的功率比小于第一阈值时，网络设备在天线极化无关性参数中删除该路径。
通过实施上述方法，由于第一极化方向上的路径，可能不存在于第二极化方向上。通过上述方法可将根据第一极化方向上的第一导频，推导出的天线极化无关性参数中的一条或多条路径删除，从而使得最终推导出的终端设备在第二极化方向上与网络设备间的信道信息更加准确。
在一种可能的实现方式中，还包括：网络设备确定从第二导频的能量中去除天线极化 无关性参数中一条或多条路径中的能量之后的剩余能量；当剩余能量大于第二阈值时，网络设备根据第二导频，对天线极化无关性参数进行增补。
通过实施上述方法，网络设备并没有直接对天线极化无关性参数进行增补，而是首先判断上述剩余能量是否大于第二阈值，如果大于，再对天线极化无关性参数进行增补，如果不大于，则可直接将天线极化无关性参数赋值为终端设备在第二极化方向上与网络设备间的信道信息，进一步减少计算复杂度。
在一种可能的实现方式中，第一极化方向与第二极化方向不同，或者第一极化方向与第二极化方向相同，且第一导频和第二导频是通过不同天线发送的。
通过实施上述方法，不但可以实现不同极化方向上的信道外推，还可实现同一极化方向上不同天线间的信道外推，满足大规模MIMO的各种需求，满足各种场景的应用。
在一种可能的实现方式中，还包括：网络设备根据网络设备与终端设备间的信道信息，对终端设备进行调度、预编码、或资源分配中的至少一个。
在一种可能的实现方式中，还包括：网络设备向终端设备发送第一配置信息，第一配置信息用于为终端设备配置第一极化方向上的第一导频；网络设备向终端设备发送第二配置信息，第二配置信息用于为终端设备配置第二极化方向上的第二导频。
可选的，第一导频可以为密集导频，第二导频可以为稀疏导频。通过实施上述方法，网络设备为终端设备配置密集导频和稀疏导频，测量终端设备与网络设备间的信道信息。相对于，为终端设备全部配置密集导频，可减少导频开销。
第二方面，提供一种通信方法，该方法的执行主体为终端设备，或者配置于终端设备中的部件(芯片、电路或其它等)，该方法包括：终端设备在第一极化方向，向网络设备发送第一导频；终端设备在第二极化方向，向网络设备发送第二导频，第一导频和第二导频用于确定终端设备与网络设备间的信道信息。
通过实施上述方法，利用灵活的导频配置，实现不同极化方向间或同一极化不同天线间信道的外推，提高了资源利用率，节省信道测量的开销，降低获得全信道信息的计算复杂度。
在一种可能的实现方式中，第一导频和第二导频用于确定终端设备与网络设备间的信道信息，包括：第一导频，用于确定天线极化无关性参数，天线极化无关性参数用于确定终端设备在第二极化方向上与网络设备之间的信道信息；第一导频，第二导频和天线极化无性参数，用于确定终端设备与网络设备间的信道信息。
可选的，第一导频可以为密集导频，第二导频可以为稀疏导频。通过实施上述方法，网络设备根据密集导频，可推导天线极化无关性参数。根据稀疏导频，对天线极化无关性参数进行微调，即可得到终端设备在稀疏导频所对应的第二极化方向上与网络设备间的信道信息。可见，无需都配置密集导频，配置稀疏导频，也可推导得到网络设备与终端设备间的信道信息，节省导频资源。
在一种可能的实现方式中，第一导频，用于确定天线极化无关性参数，包括：第一导频，用于确定第一接收信号向量；第一接收信号向量，用于确定包括一条或多条路径中每条路径的时延和方向角的二维矩阵；每条路径的时延、方向角和其所对应的二维矩阵，用于确定每条路径的增径；其中，一条或多条路径中每条路径的时延、方向角和增益，组成天线极化无关性参数。
通过实施上述方法，网络设备可得到天线极化无关性参数，由于所述天线极化无关性 参数大概率是不随着极化方向而改变的，因此，后续利用该天线极化无关性参数，可推导终端设备在其它极化方向上与网络设备间的信道信息。相对于现有技术中的其它复杂复法，在该设计中，对第一导频，进行DFT变换，即可得到天线极化无关性参数，降低计算复杂度。
在一种可能的实现方式中，第一导频，第二导频和天线极化无性参数，用于确定终端设备与网络设备间的信道信息，包括：第一导频，用于确定终端设备在第一极化方向上与网络设备间的信道信息；第二导频，用于对天线极化无关性参数进行增补；增补的天线极化无关性参数，用于得到终端设备在第二极化方向上与网络设备间的信道信息。
在一种可能的实现方式中，第二导频，用于对天线极化无关性参数进行增补，包括：第二导频，用于确定终端设备在第二极化方向上与网络设备间除天线极化无关性参数中的路径外是否有新的路径出现；当有新的路径出现时，新路径的时延、方向角和增益，用于对天线极化无关性参数进行增补。
在一种可能的实现方式中，天线极化无关性参数中的一条或多条路径，用于被删除。
在一种可能的实现方式中，天线极化无关性参数中的一条或多条路径，用于被删除，包括：天线极化无关性参数中每条路径的增益，用于确定每条路径的功率比；在一条路径的功率比小于第一阈值时，该路径，用于在天线极化无关性参数中被删除。
通过实施上述方法，由于第一极化方向上的路径，可能不存在于第二极化方向上。通过上述方法可将根据第一极化方向上的第一导频，推导出的天线极化无关性参数中的一条或多条路径删除，从而使得最终推导出的终端设备在第二极化方向上与网络设备间的信道信息更加准确。
在一种可能的实现方式中，第二导频的能量，用于确定去除天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；当剩余能量大于第二阈值时，第二导频，用于对天线极化无关性参数进行增补。
通过实施上述方法，网络设备并没有直接对天线极化无关性参数进行增补，而是首先判断上述剩余能量是否大于第二阈值，如果大于，再对天线极化无关性参数进行增补，如果不大于，则可直接将天线极化无关性参数赋值为终端设备在第二极化方向上与网络设备间的信道信息，进一步减少计算复杂度。
在一种可能的实现方式中，第一极化方向与第二极化方向不同，或者第一极化方向与第二极化方向相同，且第一导频和第二导频是通过不同天线发送的。
通过实施上述方法，不但可以实现不同极化方向上的信道外推，还可实现同一极化方向上不同天线间的信道外推，满足大规模MIMO的各种需求，满足各种场景的应用。
在一种可能的实现方式中，网络设备与终端设备间的信道信息，用于对终端设备进行调度、预编码、或资源分配中的至少一个。
在一种可能的实现方式中，还包括：终端设备接收来自网络设备的第一配置信息，第一配置信息用于为终端设备配置第一极化方向上的第一导频；终端设备接收来自网络设备的第二配置信息，第二配置信息用于为终端设备配置第二极化方向上的第二导频。
可选的，第一导频可以为密集导频，第二导频可以为稀疏导频。通过实施上述方法，网络设备为终端设备配置密集导频和稀疏导频，测量终端设备与网络设备间的信道信息。相对于，为终端设备全部配置密集导频，可减少导频开销。
第三方面，本申请实施例提供一种装置，有益效果可参见第一方面的描述。所述装置 具有实现上述第一方面的方法实施例中行为的功能。所述功能可以通过执行相应的硬件或软件实现。所述硬件或软件可包括一个或多个上述功能相对应的单元。在一种可能的设计中，该装置可包括：通信单元，用于接收来自终端设备的第一导频和第二导频，所述第一导频是所述终端设备在第一极化方向上发送的，所述第二导频是所述终端设备在第二极化方向上发送的；处理单元，用于根据所述第一导频和所述第二导频，确定所述装置与所述终端设备间的信道信息。这些单元可以执行上述第一方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第四方面，本申请实施例还提供一种装置，有益效果可参见第二方面的描述。所述装置具有实现上述第二方面的方法实施例中行为的功能。所述功能可以通过执行相应的硬件或软件实现。所述硬件或软件可包括一个或多个上述功能相对应的单元。在一种可能的设计中，该装置可包括：通信单元，用于在第一极化方向，向网络设备发送第一导频；所述通信单元，还用于在第二极化方向，向所述网络设备发送第二导频，所述第一导频和所述第二导频用于确定所述装置与所述网络设备间的信道信息。这些单元可以执行上述第二方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第五方面提供了一种装置，有益效果可参见第一方面的描述，该装置可以为上述第一方面方法实施例中的网络设备，或者为设置在网络设备中的芯片。该装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使装置执行上述第一方面方法实施例中由网络设备所执行的方法。
第六方面，提供了一种装置，有益效果可参见第二方面的描述，该装置可以为上述第二方面方法实施例中的终端设备，或者为设置在终端设备中的芯片。该装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使装置执行上述第二方面方法实施例中由终端设备所执行的方法。
第七方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，使得上述第一方面中由网络设备执行的方法被执行。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，使得上述第二方面中由终端设备执行的方法被执行。
第九方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于实现上述第一方面的方法中网络设备的功能。在一种可能的设计中，所述芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于实现上述第二方面的方法中终端设备的功能。在一种可能的设计中，所述芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十一方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第一方面中由网络设备执行的方法。
第十二方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第二方面中由终端设备执行的方法。
附图说明
图1为本申请实施例提供的通信系统的示意图；
图2为本申请实施例提供的2M*2N维的水平/垂直双极化矩阵的示意图；
图3为本申请实施例提供的通信方法的流程图；
图4、图5、图6为本申请实施例提供的不同导频的资源配置示意图；
图7为本申请实施例提供的通信方法的流程图；
图8为本申请实施例提供的不同算法重建H HH的性能示意图；
图9为本申请实施例提供的不同用户要求下算法的性能示意图；
图10为本申请实施例提供的不同路径数下算法的性能示意图；
图11为本申请实施例提供的不同系统天线配置下算法的性能示意图；
图12为本申请实施例提供的装置的一结构示意图；
图13为本申请实施例提供的装置的另一结构示意图。
具体实施方式
图1示出了本申请实施例能够应用的通信系统100的示例图。该通信系统100可以包括至少一个网络设备110。网络设备110可以是与终端设备通信的设备，如基站或基站控制器等。每个网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域(小区)内的终端设备进行通信。该网络设备110可以是接入网设备，接入网设备也可称为无线接入网(radio access network，RAN)设备，是一种为终端设备提供无线通信功能的设备。接入网设备例如包括但不限于：5G中的下一代基站(generation nodeB,gNB)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(base band unit，BBU)、收发点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、和/或移动交换中心等。或者，接入网设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)、和/或分布单元(distributed unit,DU)。或者，网络设备可以为中继站、接入点、车载设备、终端设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)中的网络设备等。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备；也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
该通信系统100还包括位于网络设备110覆盖范围内的一个或多个终端设备120。该终端设备120可以是移动的或固定的。该终端设备120可以简称为终端，是一种具有无线收发功能的设备。终端设备可以部署在陆地上，包括室内或室外，手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial  control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、和/或智慧家庭(smart home)中的无线终端设备。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备或计算设备、车载设备、可穿戴设备，未来第五代(the 5th generation，5G)网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。终端设备有时也可以称为用户设备(user equipment，UE)，终端设备120可以与不同技术的多个接入网设备进行通信，例如，终端设备可以与支持长期演进(long term evolution，LTE)的接入网设备通信，也可以与支持5G的接入网设备通信，还可以与支持LTE的接入网设备以及支持5G的接入网设备的双连接。本申请实施例并不限定。
本申请实施例中，用于实现终端设备的功能的装置可以是终端设备；也可以是能够支持终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在终端设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以用于实现终端设备的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
其中，网络设备110和终端设备120可以通过空口资源进行数据传输。所述空口资源可以包括时域资源、频域资源、码域资源和空间资源中的至少一种。具体来说，网络设备110和终端设备120进行数据传输时，网络设备110可以通过控制信道，如物理下行控制信道(physical downlink control channel，PDCCH)向终端设备120发送控制信息，从而为终端设备120分配数据信道的传输参数，如分配物理下行共享信道(physical downlink shared channel，PDSCH)或物理上行共享信道(physical uplink shared channel，PUSCH)的资源。比如，该控制信息可以指示数据信道所映射至的时域符号和/或频域资源块(resource block，RB)，网络设备110和终端设备120在该分配的时频资源上，通过数据信道进行数据传输。上述数据传输可以包括下行数据传输和/或上行数据传输，下行数据(如PDSCH携带的数据)传输可以指网络设备110向终端设备120发送数据，上行数据(如PUSCH携带的数据)传输可以指终端设备120向网络设备110发送数据。数据可以是广义的数据，比如可以是用户数据、也可以是系统消息，广播信息，或其他的信息等。
图1示例出了一个网络设备和两个终端设备。可选的，该通信系统100可以包括多个网络设备并且一个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对比不作限定。
在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A，B可以是单数或者复数。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、 “第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
此外，本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
在一种可能的实现方式中，网络设备与终端设备间可采用双极化的天线阵列。如图2所示，2M*2N维的水平/垂直双极化矩阵。其中，发射端(如网络设备)有M个双极化单元，接收端(如终端设备)有N个双极化单元。每个双极化单元由一个垂直天线和一个水平天线组成。则网络设备需要估计多种极化天线对间的信道信息，如(V B，V R)，(V B，H R)，(H B，V R)，(H B，H R)等。其中，V表示垂直极化天线，H表示水平极化天线，下标B代表网络设备，下标R代表终端设备。网络设备如何以较小的系统开销，获取多种极化天线对间的信道信息，是本申请实施例待解决的技术问题。
基于上述，本申请实施例提供一种通信方法，该方法包括：网络设备接收来自终端设备的第一导频和第二导频；其中，第一导频是终端设备在第一极化方向上发送的，第二导频是终端设备在第二极化方向上发送的；网络设备根据第一导频和第二导频，确定网络设备与终端设备间的信道信息。例如，网络设备可根据第一导频，确定终端设备在第一极化方向上与网络设备间的信道信息；网络设备根据第一导频和第二导频，确定终端设备在第二极化方向上与网络设备间的信道信息。可选的，第一导频可为密集导频，第二导频可为稀疏导频。由于在本申请实施例中，无需将导频都配置为密集导频，配置稀疏导频，也可获取终端设备在第二极化方向上与网络设备间的信道信息，从而减少系统开销。
可以理解的是，本申请实施例中的终端设备还可以是配置于终端设备中的部件(芯片、电路或其它等)，网络设备还可以是配置于网络设备中的部件(芯片、电路或其它)等，不作限定。
如图3所示，提供一种通信方法的流程，至少包括：
可选的，步骤301：网络设备为终端设备配置密集导频和稀疏导频。例如，网络设备可向终端设备发送第一配置信息和第二配置信息，所述第一配置信息用于为终端设备配置第一极化方向上的密集导频，所述第二配置信息用于为终端设备配置第二极化方向上的稀疏导频。可选的，导频可以是探测参考信号(sounding reference signal，SRS)。
其中，网络设备可以通过终端设备上报或其它默认的方式，获取终端设备侧天线阵列的极化方式或极化信息；之后，网络设备可针对不同的极化方向天线配置多种上行参考信号SRS参数模式，包括SRS所占的时频资源和传输周期等。
在一种可能的实现方式中，如图4所示，当终端设备有两个极化方向的天线时，针对终端设备不同极化方向的天线，网络设备可以配置基于资源元素(resource element，RE)的参考信号，但不同极化方向上的SRB所占用的资源或SRS密度是不同的。针对垂直极化天线V，SRS配置的参数为comb＝2，即每间隔一个RE配置一个SRS资源；针对水平极化天线H，SRS配置的参数为comb＝4，即间隔三个RE配置一个SRS资源。这样，网络设备可以首先获得高精度的垂直极化方向上的信道信息。
在另一种可能的实现方式中，如图5所示，针对不同极化方向的天线，网络设备可以 配置基于子带(Sub-band，SB)的参考信号，不同极化方向上的SRB所占用的资源或SRS的密度是不同的。例如，针对垂直极化的天线，SRS可以配置全带宽，即全带宽的资源都用于传输SRB。针对水平极化的天线，SRS可以配置部分带宽或稀疏带宽，即部分带宽或稀疏带宽的资源用于传输SRB。同理，网络设备可以首先获取全带宽、高精度的垂直极化方向上的信道信息。
在另一种可能的实现方式中，如图6所示，当终端设备在同一极化方向上有多个天线时，则网络设备可以在不同极化方向以及同一极化方向的不同天线采用多种SRS资源配置方式。如图6所示，例如，终端设备在垂直极化方向上包括V1和V2两个垂直极化天线，在水平极化方向上包括H1和H2两个水平极化天线。如图6中的a)所示，可以在同一时隙为不同天线配置不同的SRS资源。其中，针对垂直极化天线V1可以配置密集SRS资源，其余天线配置稀疏SRS资源；图6中的b)至d)中示例出了同一终端设备不同极化天线采用密集SRB和稀疏SRS的时分复用传输方式；密集SRS所处的时隙可以为多个终端设备进行频分复用。
步骤302：网络设备接收来自终端设备的密集导频和稀疏导频；其中，密集导频是终端设备在第一极化方向上发送的，稀疏导频是终端设备在第二极化方向上发送的。
在一种可能的实现方式中，第一极化方向与第二极化方向不同。例如，如图4或图5所示，第一极化方向可以为垂直极化方向V，第二极化方向可以为水平极化方向H。
在另一种可能的实现方式中，第一极化方向与第二极化方向相同，且密集导频和稀疏导频是通过不同的天线发送的。例如，如图6所示，第一极化方向和第二极化方向相同，可均为垂直极化方向，但密集导频是通过垂直天线V1发送的，稀疏导频是通过垂直天线V2发送的。
步骤303：网络设备根据密集导频和稀疏导频，确定网络设备与终端设备间的信道信息。可选的，网络设备可根据网络设备与终端设备间的信道信息，对终端设备进行调度、预编码或资源分配等中的至少一个。
在一种可能的实现方式中，网络设备可对密集导频进行测量，获得天线极化无关性参数，所述天线极化无关性参数用于确定终端设备在第二极化方向上与网络设备间的信道信息。例如，网络设备可根据所接收的密集导频，确定第一接收信号向量；网络设备对第一接收信号向量进行二维离散傅里叶变换(discrete fourier transform，DFT)，得到包括一条或多条路径中每条路径的时延和方向角的二维矩阵；网络设备根据每条路径的时延、方向角和其对应的二维矩阵，确定每条路径的增益；其中，一条或多条路径中每条路径的时延、方向角和增益，组成天线极化无关性参数。
例如，以网络设备如何利用垂直-垂直极化天线间信道(H VV)外推水平-水平极化天线间信道(H HH)为例详细论述上述过程。网络设备可利用牛顿正交匹配追踪(newtonized orthogonal matching pursuit，NOMP)算法，确定上述天线极化无关性参数。可选的，NOMP算法是一种基于迭代的算法，在每次迭代中利用密集导频查找时延和到达角，计算增益，对这三个参数进行优化更新。在第一次迭代中，NOMP算法按照以下四个步骤运行：
1)查找：网络设备可接收来自终端设备的密集导频y vv，密集导频和稀疏导频占用资源比例为u:1，所有被分配的子载波和接收的密集导频，可以堆叠成向量：
Figure PCTCN2021085077-appb-000001
其中，
Figure PCTCN2021085077-appb-000002
是一个NscN/μ维的向量，α(θ l)包含了达到角的信息，
Figure PCTCN2021085077-appb-000003
是CLA阵列的转向矢量；p(τ l)包含了时延信息，
Figure PCTCN2021085077-appb-000004
对上述向量y vv进行DFT变换，得到包括到达角-时延的二维矩阵，通过该二维矩阵，可以粗略估计出第l条路径的到达角
Figure PCTCN2021085077-appb-000005
和时延
Figure PCTCN2021085077-appb-000006
然后通过到达角
Figure PCTCN2021085077-appb-000007
和时延
Figure PCTCN2021085077-appb-000008
及其对应的角度、时延矩阵，计算该路径的增益
Figure PCTCN2021085077-appb-000009
可选的，二维矩阵的横轴表示时延，每个格子代表一个归一化的时延值；二维矩阵的纵轴表示方向角，每个格子代表一个归一化的角度值；格子中的元素代表这条路径的能量；如果横轴时延与纵轴角度交汇的格子，存在能量，就代表存在相应的路径l。其中，时延、方向角和增益可以确定一条路径。
2)单次优化：根据上述查找步骤中粗略估计出的三元组
Figure PCTCN2021085077-appb-000010
定义成本函数如下：
Figure PCTCN2021085077-appb-000011
牛顿单次优化步骤为：
Figure PCTCN2021085077-appb-000012
这里，将粗略估计出的三元组
Figure PCTCN2021085077-appb-000013
经过单次牛顿优化步骤，获得的
Figure PCTCN2021085077-appb-000014
这组路径添加到所估计的三元组集合中。
3)循环优化：每查找出一次路径，便循环运用单次优化步骤，对检测出的所有路径的方向角和时延进行优化，用优化值重新定义所估计出的三元组集合。
4)参数更新，保留每条路径估计的到达角和时延，并通过最小二乘法(least squares，LS)算法更新每条路径的增益。
5)当代价函数的值降低到预设阈值以下时，NOMP算法迭代结束，停止检测新的路径，可利用所检测出的H VV各路径的增益、到达角和时延
Figure PCTCN2021085077-appb-000015
重建H VV上行链路，并将其作为外推其它极化方向信道的初始参数，即作为天线极化无关性参数。
通过上述可以看出，在本申请实施例中，网络设备对接收的密集导频的向量，进行DFT变换，得到二维矩阵；根据二维矩阵，查找路径，且每查找出一条路径，即粗略估计该路径的方向角、时延和增益等，组成该路径的三元组(增益、方向角、时延)；之后，对该三元组进行单次优化和参数更新；判断此时代价函数的值是否降低到预定阈值，如果降低到预设阈值，则停止检测新的路径；否则，利用二维矩阵，继续检测新的路径，直到代价函数的值降低到预设阈值以下时为止。最后，所检测出所有路径的增益、时延和方向角，组成天线极化无关性参数。
网络设备根据密集导频、稀疏导频和天线极化无关性参数，确定网络设备与终端设备间的信道信息。网络设备与终端设备间的信道信息包括：终端设备在第一极化方向上与网络设备之间的信道信息，以及终端设备在第二极化方向上与网络设备之间的信道信息。例 如，网络设备可对密集导频进行测量，获得终端设备在第一极化方向上与网络设备间的信道信息。网络设备可确定从第二导频的能量中去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；判断剩余能量与第二阈值的大小；若剩余能量大于第二阈值，则所述网络设备可根据第二导频，对天线极化无关性参数进行增补；若剩余能量小于或等于第二阈值，则所述网络设备可确定终端设备在第二极化方向上与网络设备间的信道信息，即为上述天线极化无关性参数。可选的，所述网络设备还可删除天线极化无关性参数中的一条或多条路径，所述删除的过程，可包括：所述网络设备根据天线极化无关性参数中每条路径的增益，确定每条路径的功率比；当一条路径的功率比小于第一阈值时，所述网络设备在天线极化无关性参数中删除该路径。
例如，沿用上述举例，根据不同极化方向之间天线极化无关性参数的相似性，到达角、时延和路径数等在待推极化方向可能保持不变或略有变化；部分路径可能在一个极化方向上存在，而在其它极化方向上不存在。需要首先决定初始参数落入哪种情况，然后应用相应的方法来优化参数，此处以H VV推H HH为例，具体步骤如下：
1)判断上述天线极化无关性参数—时延、到达角、路径数等是否适用于H HH。
a)首先将天线极化无关性参数中每条路径的方向角和时延，直接赋值给H HH，令
Figure PCTCN2021085077-appb-000016
b)通过LS算法更新H HH各路径的增益，得到
Figure PCTCN2021085077-appb-000017
计算从H HH接收的稀疏导频yvv中去除所估计L条路径能量后的残余能量：
Figure PCTCN2021085077-appb-000018
c)停止准则：若
Figure PCTCN2021085077-appb-000019
则
Figure PCTCN2021085077-appb-000020
可直接用于重建H HH，即终端设备在水平方向H上与网络设备间的信道信息为
Figure PCTCN2021085077-appb-000021
2)如果上一步骤判断出的天线极化无关性参数，无法直接用于重建H HH，则：
a)利用上述“循环优化”模块，对天线极化无关性参数进行优化，且将优化后各路径的参数赋值给信道H HH，如下：
Figure PCTCN2021085077-appb-000022
b)判断经过优化后的
Figure PCTCN2021085077-appb-000023
是否满足停止准则：
Figure PCTCN2021085077-appb-000024
若满足，则可运用经过优化后
Figure PCTCN2021085077-appb-000025
重建H HH，即终端设备在水平极化方向H上与网络设备间的信道信息为优化后的
Figure PCTCN2021085077-appb-000026
Figure PCTCN2021085077-appb-000027
若不满足，则计算每条路径的功率比：
第l条路径的功率比为：
Figure PCTCN2021085077-appb-000028
若γ l小于一定的阈值δ∈(0,1]，则在天线极化无关性参数中去除该条路径l；
Figure PCTCN2021085077-appb-000029
检测完
Figure PCTCN2021085077-appb-000030
条路径的功率比后，再次运用步骤一中的“查找”模块，检测H HH中是否有新路径的出现，最后运用此时的各路径参数
Figure PCTCN2021085077-appb-000031
重建H HH，即终端设备在水平极化方向上与网络设备间的信道信息为
Figure PCTCN2021085077-appb-000032
通过上述可以看出，利用灵活的导频配置，为网络设备实现不同极化间或同一极化不同天线间信道的外推，提高了可利用的资源，不仅节省了用于信道测量的开销，还可以降低获得全信道信息的计算复杂度。
在一种可能的实现方式中，如图7所示，提供一种通信方法的流程，包括：基站通知终端设备在每个极化方向上的SRS图案。比如，基站可在不同的极化方向上为终端设备配置不同的SRS图案。比如，在第一极化方向上为终端设备配置密集SRS，在第二极化方向上为终端设备配置稀疏SRS。终端设备在每个极化方向上，按照配置发送SRS。基站利用一极化方向上的SRS，估计天线极化天关性参数，例如，利用密集SRS，估计天线极化无关性参数等；基站利用其他极化方向上的SRS，对上述估计的天线极化无关性参数进行微调，得到其它极化方向上的信道信息；基站重建其他极化方向上的信道。
其中，上述对天线极化无关性参数进行微调的过程可包括：首先将上述天线极化无关性参数直接作为其它极化方向上的信道信息；判断此时是否能够重建其它极化方向上的信道；若能，则微调结束；若不能，则微调天线极化无关性参数的值。关于微调的过程，即上述实施例对天线极化无关性参数进行增补的过程。微调后，继续判断能否重建其它方向上的信道；若能，则微调结束；否则，删除天线极化无关性参数中可能不存在的路径，且根据其它极化方向上的SRS，检测新的路径。
以下将从各个不同角度，详细论述本申请方案的技术效果，在以下论述中，将本申请实施例提供的方案，称为极化外推方案：
1)算法复杂度分析，考虑使用NOMP算法直接重建双极化信道作为参考，NOMP算法中，各关键步骤的计算复杂度如表1所示：
表1，NOMP算法中各关键部分复杂度
Figure PCTCN2021085077-appb-000033
Figure PCTCN2021085077-appb-000034
Figure PCTCN2021085077-appb-000035
采用NOMP算法重建双极化天线信道的计算复杂度为：
Figure PCTCN2021085077-appb-000036
Figure PCTCN2021085077-appb-000037
采用极化外推法重建双极化天线信道的计算复杂度为：
Figure PCTCN2021085077-appb-000038
复杂度分析的结论：本申请实施例的方案可以大幅降低计算复杂度，且可以节约导频资源。
2)算法性能仿真分析
考虑三种信道重建方案作为参考：a)使用LS算法直接重建H HH；b)使用MMSE算法直接重建H HH；c)使用NOMP算法直接重建H HH；d)使用本申请实施例中的极化外推方案重建H HH；仿真参数设置如下：
表2，仿真参数设置
参数 取值
基站双极化天线单元数 4，32,64
基站天线排列方式 CLA
基站天线单元间距离 0.5λ
路径数 2,4,6,8
子载波数 64
时延字典过采样率 1
到达角字典过采样率 1
载波频率 3.5GHz
子载波间隔 15kHz
图8给出了，H VV和H HH各路径具有完全相同的增益、到达角和时延的情况下，四种方案重建H HH性能对比图；图9给出了H VV和H HH各路径具有完全相同的到达角，但两个极化信道增益不同—各路径增益皆为均值为0，方差为1的随机数；同时，H HH的时延相较于H VV的时延有5％以内的波动情况下，四种方案重建H HH性能对比图。
从图8和图9中可以看出，无论是不同极化方向上的CSI参数完全相同的情况，还是不同极化方向上的CSI参数存在波动的情况下，LS估计在低信噪比(signal noise ratio，SNR)区域性能较差，MMSE方法大大提高了估计精度，对于本申请实施例中的极化外推方法，在信噪比区域的重建总是能达到与NOMP估计相似的性能。
图10示意出了极化外推法在路径数目不同时的性能对比图。可以发现，该方法的重建性能会随着路径数目的增加略微下降。
图11给出了极化外推法在网络设备双极化单元数目不同时的性能对比图，可以看出使用极化外推法进行信道重建时，重建精度会随着网络设备天线单元数目的增加而提升，说明本申请实施例的方法适用于大规模MIMO系统。
仿真结果分析：
1)新算法-极化外推方案和多维NOMP方案有相似性能，但复杂度和系统开销更低；
2)新算法-极化外推方案在多种复杂无线传输环境下均表现出了很好的性能。
本申请实施例的改进之外主要集中在两个方面：利用不同极化信道上采用不同的导频配置，减少了导频的系统开销；同时，网络设备利用不同极化信道间的关系进行信道外推，降低了网络设备的计算复杂度、功耗和时延，使得网络设备可以更高效的处理更多的业务。
以上结合图1至图11详细描述了本申请实施例提供的方法。以下结合图12和图13详细说明本申请实施例提供的装置。应理解，装置实施例的描述与方法实施例的描述相互对应。因此，未详细描述的内容可参见上文方法实施例中的描述。
图12是本申请实施例提供的装置1100的示意性框图，用于实现上述方法实施例中网络设备或终端设备的功能。该装置可以为软件单元或芯片系统。芯片系统可以由芯片构成，也可以包括芯片或其它分立器件。该装置可以包括通信单元1101，用于与外部进行通信。该装置还可以包括处理单元1102，用于进行处理。
在一种示例中，上述装置1100用于实现上述方法实施例中网络设备的步骤。装置1100可以是网络设备，也可以是配置于网络设备中的芯片或电路。通信单元1101用于执行上述网络设备的收发相关操作，处理单元1102用于执行上述网络设备的处理相关操作。
例如，通信单元1101，用于接收来自终端设备的第一导频和第二导频，所述第一导频是所述终端设备在第一极化方向上发送的，所述第二导频是所述终端设备在第二极化方向上发送的；处理单元1102，用于根据所述第一导频和所述第二导频，确定所述网络设备与所述终端设备间的信道信息。
在一种可能的实现方式中，根据所述第一导频和所述第二导频，确定所述网络设备与所述终端设备间的信道信息，包括：对所述第一导频进行测量，获得天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述网络设备之间的信道信息；根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述网络设备与所述终端设备间的信道信息。
其中，上述对所述第一导频进行测量，获得天线极化无关性参数，包括：根据所接收的第一导频，确定第一接收信号向量；对所述第一接收信号向量进行二维离散傅里叶变换DFT，得到包括一条或多条路径中每条路径的时延和方向角的二维矩阵；根据所述每条路径的时延、方向角和其对应的二维矩阵，确定每条路径的增益；其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
其中，上述根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述网络设备与所述终端设备间的信道信息，包括：根据所述第一导频，确定所述终端设备在第一极化方向上与所述网络设备间的信道信息；根据所述第二导频，对所述天线极化无关性参数进行增补；根据增补的天线极化无关性参数，得到所述终端设备在第二极化方向上与所述网络设备间的信道信息。在一种可能的实现方式中，根据所述第二导频，对所述天线极化无关性参数进行增补，包括：根据所接收的第二导频，确定所述终端设备在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；当有新的路径出现时，确定所述新路径的时延、方向角和增益；根据所述新路径的时延、方向角和增益，对所述天线极化无关性参数进行增补。
可选的，处理单元1102，还用于：删除所述天线极化无关性参数中的一条或多条路径。
在一种可能的实现方式中，删除所述天线极化无关性参数中的一条或多条路径，包括：根据所述天线极化无关性参数中每条路径的增益，确定所述每条路径的功率比；当一条路径的功率比小于第一阈值时，在所述天线极化无关性参数中删除该路径。
可选的，处理单元1102，还用于：确定从第二导频的能量中去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；当所述剩余能量大于第二阈值时，根据所述第二导频，对所述天线极化无关性参数进行增补。
其中，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
可选的，处理单元1102，还用于：根据所述网络设备与所述终端设备间的信道信息，对所述终端设备进行调度、预编码、或资源分配中的至少一个。
可选的，通信单元1101，还用于：向所述终端设备发送第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频；向所述终端设备发送第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
在另一种示例中，上述装置1100用于实现上述方法实施例中终端设备的步骤。装置1100可以是终端设备，也可以是配置于终端设备中的芯片或电路。通信单元1101用于执行上述终端设备的收发相关操作，处理单元1102用于执行上述终端设备的处理相关操作。
例如，通信单元1101，用于在第一极化方向，向网络设备发送第一导频，在第二极化方向，向所述网络设备发送第二导频，所述第一导频和所述第二导频用于确定所述终端设备与所述网络设备间的信道信息。
在一种可能的实现方式中，所述第一导频和所述第二导频用于确定所述终端设备与所述网络设备间的信道信息，包括：所述第一导频，用于确定天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述网络设备之间的信道信息；所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述终端设备与所述网络设备间的信道信息。
其中，所述第一导频，用于确定天线极化无关性参数，包括：所述第一导频，用于确定第一接收信号向量；所述第一接收信号向量，用于确定包括一条或多条路径中每条路径的时延和方向角的二维矩阵；所述每条路径的时延、方向角和其所对应的二维矩阵，用于确定每条路径的增径；其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
其中，所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述终端设备与所述网络设备间的信道信息，包括：所述第一导频，用于确定所述终端设备在第一极化方向上与所述网络设备间的信道信息；所述第二导频，用于对所述天线极化无关性参数进行增补；增补的天线极化无关性参数，用于得到所述终端设备在第二极化方向上与所述网络设备间的信道信息。
在一种可能的实现方式中，所述第二导频，用于对所述天线极化无关性参数进行增补，包括：所述第二导频，用于确定所述终端设备在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；当有新的路径出现时，所述新路径的时延、方向角和增益，用于对所述天线极化无关性参数进行增补。
可选的，所述天线极化无关性参数中的一条或多条路径，用于被删除。
在一种可能的实现方式中，所述天线极化无关性参数中的一条或多条路径，用于被删 除，包括：所述天线极化无关性参数中每条路径的增益，用于确定所述每条路径的功率比；在一条路径的功率比小于第一阈值时，所述该路径，用于在所述天线极化无关性参数中被删除。
可选的，所述第二导频的能量，用于确定去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；当所述剩余能量大于第二阈值时，所述第二导频，用于对所述天线极化无关性参数进行增补。
其中，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
可选的，所述网络设备与所述终端设备间的信道信息，用于对所述终端设备进行调度、预编码、或资源分配中的至少一个。
可选的，通信单元1101，还用于：接收来自所述网络设备的第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频，以及，接收来自所述网络设备的第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能单元可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
可以理解的是，上述实施例中的通信单元的功能可以由收发器实现，处理单元的功能可以由处理器实现。收发器可以包括发射器和/或接收器等，分别用于实现发送单元和/或接收单元的功能。以下结合图13举例进行说明。
图13所示的通信装置1200包括至少一个处理器1201。通信装置1200还可以包括至少一个存储器1202，用于存储程序指令和/或数据。存储器1202和处理器1201耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性、机械性或其它的形式，用于装置、单元或模块之间的信息交互。处理器1201可以和存储器1202协同操作，处理器1201可以执行存储器1202中存储的程序指令，所述至少一个存储器中1202中的至少一个可以包括于处理器1201中。
装置1200还可以包括通信接口1203，用于通过传输介质和其它设备进行通信，从而用于通信装置1200可以和其它设备进行通信。在本申请实施例中，通信接口可以是收发器、电路、总线、模块或其它类型的通信接口。在本申请实施例中，通信接口为收发器时，收发器可以包括独立的接收器、独立的发射器；也可以集成收发功能的收发器、或者是接口电路。
应理解，本申请实施例中不限定上述处理器1201、存储器1202以及通信接口1203之间的连接介质。本申请实施例在图13中以存储器1202、处理器1201以及通信接口1203之间通过通信总线1204连接，总线在图13中以粗线表示，其它部件之间的连接方式，仅是示意性说明，并不作为限定。所述总线可以包括地址总线、数据总线、控制总线等。为了便于表示，图13中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线等。
在一种示例中，装置1200用于实现上述方法实施例中网络设备执行的步骤。通信接口1203用于执行上文方法实施例中网络设备的收发相关操作，处理器1201用于执行上述方法实施例中网络设备的处理相关操作。
例如，通信接口1203，用于接收来自终端设备的第一导频和第二导频，所述第一导频是所述终端设备在第一极化方向上发送的，所述第二导频是所述终端设备在第二极化方向上发送的；处理器1201，用于根据所述第一导频和所述第二导频，确定所述网络设备与所述终端设备间的信道信息。
在一种可能的实现方式中，根据所述第一导频和所述第二导频，确定所述网络设备与所述终端设备间的信道信息，包括：对所述第一导频进行测量，获得天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述网络设备之间的信道信息；根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述网络设备与所述终端设备间的信道信息。
其中，对所述第一导频进行测量，获得天线极化无关性参数，包括：根据所接收的第一导频，确定第一接收信号向量；对所述第一接收信号向量进行二维离散傅里叶变换DFT，得到包括一条或多条路径中每条路径的时延和方向角的二维矩阵；根据所述每条路径的时延、方向角和其对应的二维矩阵，确定每条路径的增益；其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
其中，根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述网络设备与所述终端设备间的信道信息，包括：根据所述第一导频，确定所述终端设备在第一极化方向上与所述网络设备间的信道信息；根据所述第二导频，对所述天线极化无关性参数进行增补；根据增补的天线极化无关性参数，得到所述终端设备在第二极化方向上与所述网络设备间的信道信息。
在一种可能的实现方式中，根据所述第二导频，对所述天线极化无关性参数进行增补，包括：根据所接收的第二导频，确定所述终端设备在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；当有新的路径出现时，确定所述新路径的时延、方向角和增益；根据所述新路径的时延、方向角和增益，对所述天线极化无关性参数进行增补。
可选的，处理器1201，还用于：删除所述天线极化无关性参数中的一条或多条路径。
在一种可能的实现方式中，删除所述天线极化无关性参数中的一条或多条路径，包括：根据所述天线极化无关性参数中每条路径的增益，确定所述每条路径的功率比；当一条路径的功率比小于第一阈值时，在所述天线极化无关性参数中删除该路径。
可选的，处理器1201，还用于：确定从第二导频的能量中去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；当所述剩余能量大于第二阈值时，根据所述第二导频，对所述天线极化无关性参数进行增补。
可选的，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
可选的，处理器1201，还用于：根据所述网络设备与所述终端设备间的信道信息，对所述终端设备进行调度、预编码、或资源分配中的至少一个。
可选的，通信接口1203，还用于：向所述终端设备发送第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频；向所述终端设备发送第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
在另一种示例中，装置1200用于实现上述方法实施例中终端设备执行的步骤。通信接口1203用于执行上文实施例中终端设备的收发相关操作，处理器1201用于执行上文实 施例中终端设备的处理相关操作。
例如，通信接口1203，用于在第一极化方向，向网络设备发送第一导频，在第二极化方向，向所述网络设备发送第二导频，所述第一导频和所述第二导频用于确定所述终端设备与所述网络设备间的信道信息。
在一种可能的实现方式中，所述第一导频和所述第二导频用于确定所述终端设备与所述网络设备间的信道信息，包括：所述第一导频，用于确定天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述网络设备之间的信道信息；所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述终端设备与所述网络设备间的信道信息。
其中，所述第一导频，用于确定天线极化无关性参数，包括：所述第一导频，用于确定第一接收信号向量；所述第一接收信号向量，用于确定包括一条或多条路径中每条路径的时延和方向角的二维矩阵；所述每条路径的时延、方向角和其所对应的二维矩阵，用于确定每条路径的增径；其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
其中，所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述终端设备与所述网络设备间的信道信息，包括：所述第一导频，用于确定所述终端设备在第一极化方向上与所述网络设备间的信道信息；所述第二导频，用于对所述天线极化无关性参数进行增补；增补的天线极化无关性参数，用于得到所述终端设备在第二极化方向上与所述网络设备间的信道信息。在一种可能的实现方式中，所述第二导频，用于对所述天线极化无关性参数进行增补，包括：所述第二导频，用于确定所述终端设备在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；当有新的路径出现时，所述新路径的时延、方向角和增益，用于对所述天线极化无关性参数进行增补。
可选的，所述天线极化无关性参数中的一条或多条路径，用于被删除。
可选的，所述天线极化无关性参数中的一条或多条路径，用于被删除，包括：所述天线极化无关性参数中每条路径的增益，用于确定所述每条路径的功率比；在一条路径的功率比小于第一阈值时，所述该路径，用于在所述天线极化无关性参数中被删除。
可选的，所述第二导频的能量，用于确定去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；当所述剩余能量大于第二阈值时，所述第二导频，用于对所述天线极化无关性参数进行增补。
其中，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
可选的，所述网络设备与所述终端设备间的信道信息，用于对所述终端设备进行调度、预编码、或资源分配中的至少一个。
可选的，通信接口1203，还用于：接收来自所述网络设备的第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频，以及，接收来自所述网络设备的第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
进一步的，本申请实施例还提供一种装置，所述装置用于执行上文方法实施例中的方法。一种计算机可读存储介质，包括程序，当所述程序被处理器运行时，上文方法实施例中的方法被执行。一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所 述计算机程序代码在计算机上运行时，使得计算机实现上文方法实施例中的方法。一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得装置执行上文方法实施例中的方法。
本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
本申请实施例提供的方法中，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发明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、网络设备、用户设备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，简称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可以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 disc，简称DVD))、或者半导体介质(例如,SSD)等。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (49)

  1. 一种通信方法，其特征在于，包括：
    网络设备接收来自终端设备的第一导频和第二导频，所述第一导频是所述终端设备在第一极化方向上发送的，所述第二导频是所述终端设备在第二极化方向上发送的；
    所述网络设备根据所述第一导频和所述第二导频，确定所述网络设备与所述终端设备间的信道信息。
  2. 如权利要求1所述的方法，其特征在于，所述网络设备根据所述第一导频和所述第二导频，确定所述网络设备与所述终端设备间的信道信息，包括：
    所述网络设备对所述第一导频进行测量，获得天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述网络设备之间的信道信息；
    所述网络设备根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述网络设备与所述终端设备间的信道信息。
  3. 如权利要求2所述的方法，其特征在于，所述网络设备对所述第一导频进行测量，获得天线极化无关性参数，包括：
    所述网络设备根据所接收的第一导频，确定第一接收信号向量；
    所述网络设备对所述第一接收信号向量进行二维离散傅里叶变换DFT，得到包括一条或多条路径中每条路径的时延和方向角的二维矩阵；
    所述网络设备根据所述每条路径的时延、方向角和其对应的二维矩阵，确定每条路径的增益；
    其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
  4. 如权利要求2或3所述的方法，其特征在于，所述网络设备根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述网络设备与所述终端设备间的信道信息，包括：
    所述网络设备根据所述第一导频，确定所述终端设备在第一极化方向上与所述网络设备间的信道信息；
    所述网络设备根据所述第二导频，对所述天线极化无关性参数进行增补；
    所述网络设备根据增补的天线极化无关性参数，得到所述终端设备在第二极化方向上与所述网络设备间的信道信息。
  5. 如权利要求4所述的方法，其特征在于，所述网络设备根据所述第二导频，对所述天线极化无关性参数进行增补，包括：
    所述网络设备根据所接收的第二导频，确定所述终端设备在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；
    当有新的路径出现时，所述网络设备确定所述新路径的时延、方向角和增益；
    所述网络设备根据所述新路径的时延、方向角和增益，对所述天线极化无关性参数进行增补。
  6. 如权利要求2至5中任一项所述的方法，其特征在于，还包括：
    所述网络设备删除所述天线极化无关性参数中的一条或多条路径。
  7. 如权利要求6所述的方法，其特征在于，所述网络设备删除所述天线极化无关性参 数中的一条或多条路径，包括：
    所述网络设备根据所述天线极化无关性参数中每条路径的增益，确定所述每条路径的功率比；
    当一条路径的功率比小于第一阈值时，所述网络设备在所述天线极化无关性参数中删除该路径。
  8. 如权利要求4至7任一项所述的方法，其特征在于，还包括：
    所述网络设备确定从第二导频的能量中去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；
    当所述剩余能量大于第二阈值时，所述网络设备根据所述第二导频，对所述天线极化无关性参数进行增补。
  9. 如权利要求1至8任一项所述的方法，其特征在于，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
  10. 如权利要求2至9任一项所述的方法，其特征在于，还包括：
    所述网络设备根据所述网络设备与所述终端设备间的信道信息，对所述终端设备进行调度、预编码、或资源分配中的至少一个。
  11. 如权利要求1至10中任一项所述的方法，其特征在于，还包括：
    所述网络设备向所述终端设备发送第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频；
    所述网络设备向所述终端设备发送第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
  12. 一种通信方法，其特征在于，包括：
    终端设备在第一极化方向，向网络设备发送第一导频；
    所述终端设备在第二极化方向，向所述网络设备发送第二导频，所述第一导频和所述第二导频用于确定所述终端设备与所述网络设备间的信道信息。
  13. 如权利要求12所述的方法，其特征在于，所述第一导频和所述第二导频用于确定所述终端设备与所述网络设备间的信道信息，包括：
    所述第一导频，用于确定天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述网络设备之间的信道信息；
    所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述终端设备与所述网络设备间的信道信息。
  14. 如权利要求13所述的方法，其特征在于，所述第一导频，用于确定天线极化无关性参数，包括：
    所述第一导频，用于确定第一接收信号向量；
    所述第一接收信号向量，用于确定包括一条或多条路径中每条路径的时延和方向角的二维矩阵；
    所述每条路径的时延、方向角和其所对应的二维矩阵，用于确定每条路径的增径；
    其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
  15. 如权利要求13或14所述的方法，其特征在于，所述第一导频，所述第二导频和所 述天线极化无性参数，用于确定所述终端设备与所述网络设备间的信道信息，包括：
    所述第一导频，用于确定所述终端设备在第一极化方向上与所述网络设备间的信道信息；
    所述第二导频，用于对所述天线极化无关性参数进行增补；
    增补的天线极化无关性参数，用于得到所述终端设备在第二极化方向上与所述网络设备间的信道信息。
  16. 如权利要求15所述的方法，其特征在于，所述第二导频，用于对所述天线极化无关性参数进行增补，包括：
    所述第二导频，用于确定所述终端设备在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；
    当有新的路径出现时，所述新路径的时延、方向角和增益，用于对所述天线极化无关性参数进行增补。
  17. 如权利要求13至16任一项所述的方法，其特征在于，所述天线极化无关性参数中的一条或多条路径，用于被删除。
  18. 如权利要求17所述的方法，其特征在于，所述天线极化无关性参数中的一条或多条路径，用于被删除，包括：
    所述天线极化无关性参数中每条路径的增益，用于确定所述每条路径的功率比；
    在一条路径的功率比小于第一阈值时，所述该路径，用于在所述天线极化无关性参数中被删除。
  19. 如权利要求15至18任一项所述的方法，其特征在于，
    所述第二导频的能量，用于确定去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；
    当所述剩余能量大于第二阈值时，所述第二导频，用于对所述天线极化无关性参数进行增补。
  20. 如权利要求12至19任一项所述的方法，其特征在于，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
  21. 如权利要求13至20任一项所述的方法，其特征在于，所述网络设备与所述终端设备间的信道信息，用于对所述终端设备进行调度、预编码、或资源分配中的至少一个。
  22. 如权利要求12至21任一项所述的方法，其特征在于，还包括：
    所述终端设备接收来自所述网络设备的第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频；
    所述终端设备接收来自所述网络设备的第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
  23. 一种通信装置，其特征在于，包括：
    通信单元，用于接收来自终端设备的第一导频和第二导频，所述第一导频是所述终端设备在第一极化方向上发送的，所述第二导频是所述终端设备在第二极化方向上发送的；
    处理单元，用于根据所述第一导频和所述第二导频，确定所述通信装置与所述终端设备间的信道信息。
  24. 如权利要求23所述的装置，其特征在于，所述根据所述第一导频和所述第二导频， 确定所述通信装置与所述终端设备间的信道信息，包括：
    对所述第一导频进行测量，获得天线极化无关性参数，所述天线极化无关性参数用于确定所述终端设备在第二极化方向上与所述通信装置之间的信道信息；
    根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述通信装置与所述终端设备间的信道信息。
  25. 如权利要求24所述的装置，其特征在于，对所述第一导频进行测量，获得天线极化无关性参数，包括：
    根据所接收的第一导频，确定第一接收信号向量；
    对所述第一接收信号向量进行二维离散傅里叶变换DFT，得到包括一条或多条路径中每条路径的时延和方向角的二维矩阵；
    根据所述每条路径的时延、方向角和其对应的二维矩阵，确定每条路径的增益；
    其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
  26. 如权利要求24或25所述的装置，其特征在于，所述根据所述第一导频，所述第二导频和所述天线极化无关性参数，确定所述通信装置与所述终端设备间的信道信息，包括：
    根据所述第一导频，确定所述终端设备在第一极化方向上与所述通信装置间的信道信息；
    根据所述第二导频，对所述天线极化无关性参数进行增补；
    根据增补的天线极化无关性参数，得到所述终端设备在第二极化方向上与所述通信装置间的信道信息。
  27. 如权利要求26所述的装置，其特征在于，所述根据所述第二导频，对所述天线极化无关性参数进行增补，包括：
    根据所接收的第二导频，确定所述终端设备在第二极化方向上与所述通信装置间除所述天线极化无关性参数中的路径外是否有新的路径出现；
    当有新的路径出现时，确定所述新路径的时延、方向角和增益；
    根据所述新路径的时延、方向角和增益，对所述天线极化无关性参数进行增补。
  28. 如权利要求24至27中任一项所述的装置，其特征在于，所述处理单元，还用于：
    删除所述天线极化无关性参数中的一条或多条路径。
  29. 如权利要求28所述的装置，其特征在于，所述删除所述天线极化无关性参数中的一条或多条路径，包括：
    根据所述天线极化无关性参数中每条路径的增益，确定所述每条路径的功率比；
    当一条路径的功率比小于第一阈值时，在所述天线极化无关性参数中删除该路径。
  30. 如权利要求26至29任一项所述的装置，其特征在于，所述处理单元，还用于：
    确定从第二导频的能量中去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；
    当所述剩余能量大于第二阈值时，根据所述第二导频，对所述天线极化无关性参数进行增补。
  31. 如权利要求23至30任一项所述的装置，其特征在于，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
  32. 如权利要求24至31任一项所述的装置，其特征在于，所述处理单元，还用于：
    根据所述通信装置与所述终端设备间的信道信息，对所述终端设备进行调度、预编码、或资源分配中的至少一个。
  33. 如权利要求23至32中任一项所述的装置，其特征在于，所述通信单元，还用于：
    向所述终端设备发送第一配置信息，所述第一配置信息用于为所述终端设备配置所述第一极化方向上的第一导频；
    向所述终端设备发送第二配置信息，所述第二配置信息用于为所述终端设备配置所述第二极化方向上的第二导频。
  34. 一种通信装置，其特征在于，包括：
    通信单元，用于在第一极化方向，向网络设备发送第一导频；
    所述通信单元，还用于在第二极化方向，向所述网络设备发送第二导频，所述第一导频和所述第二导频用于确定所述通信装置与所述网络设备间的信道信息。
  35. 如权利要求34所述的装置，其特征在于，所述第一导频和所述第二导频用于确定所述通信装置与所述网络设备间的信道信息，包括：
    所述第一导频，用于确定天线极化无关性参数，所述天线极化无关性参数用于确定所述通信装置在第二极化方向上与所述网络设备之间的信道信息；
    所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述通信装置与所述网络设备间的信道信息。
  36. 如权利要求35所述的装置，其特征在于，所述第一导频，用于确定天线极化无关性参数，包括：
    所述第一导频，用于确定第一接收信号向量；
    所述第一接收信号向量，用于确定包括一条或多条路径中每条路径的时延和方向角的二维矩阵；
    所述每条路径的时延、方向角和其所对应的二维矩阵，用于确定每条路径的增径；
    其中，所述一条或多条路径中每条路径的时延、方向角和增益，组成所述天线极化无关性参数。
  37. 如权利要求35或36所述的装置，其特征在于，所述第一导频，所述第二导频和所述天线极化无性参数，用于确定所述通信装置与所述网络设备间的信道信息，包括：
    所述第一导频，用于确定所述通信装置在第一极化方向上与所述网络设备间的信道信息；
    所述第二导频，用于对所述天线极化无关性参数进行增补；
    增补的天线极化无关性参数，用于得到所述通信装置在第二极化方向上与所述网络设备间的信道信息。
  38. 如权利要求37所述的装置，其特征在于，所述第二导频，用于对所述天线极化无关性参数进行增补，包括：
    所述第二导频，用于确定所述通信装置在第二极化方向上与所述网络设备间除所述天线极化无关性参数中的路径外是否有新的路径出现；
    当有新的路径出现时，所述新路径的时延、方向角和增益，用于对所述天线极化无关性参数进行增补。
  39. 如权利要求35至38任一项所述的装置，其特征在于，所述天线极化无关性参数中 的一条或多条路径，用于被删除。
  40. 如权利要求39所述的装置，其特征在于，所述天线极化无关性参数中的一条或多条路径，用于被删除，包括：
    所述天线极化无关性参数中每条路径的增益，用于确定所述每条路径的功率比；
    在一条路径的功率比小于第一阈值时，所述该路径，用于在所述天线极化无关性参数中被删除。
  41. 如权利要求37至40任一项所述的装置，其特征在于，
    所述第二导频的能量，用于确定去除所述天线极化无关性参数中一条或多条路径中的能量之后的剩余能量；
    当所述剩余能量大于第二阈值时，所述第二导频，用于对所述天线极化无关性参数进行增补。
  42. 如权利要求34至41任一项所述的装置，其特征在于，所述第一极化方向与所述第二极化方向不同，或者所述第一极化方向与所述第二极化方向相同，且所述第一导频和所述第二导频是通过不同天线发送的。
  43. 如权利要求35至42任一项所述的装置，其特征在于，所述网络设备与所述通信装置间的信道信息，用于对所述通信装置进行调度、预编码、或资源分配中的至少一个。
  44. 如权利要求34至43任一项所述的装置，其特征在于，所述通信单元，还用于：
    接收来自所述网络设备的第一配置信息，所述第一配置信息用于为所述通信装置配置所述第一极化方向上的第一导频；
    接收来自所述网络设备的第二配置信息，所述第二配置信息用于为所述通信装置配置所述第二极化方向上的第二导频。
  45. 一种装置，其特征在于，用于实现如权利要求1至11任一项所述的方法，或者权利要求12至22任一项所述的方法。
  46. 一种装置，其特征在于，包括处理器和存储器，所述存储器中存储有指令，所述处理器执行所述指令时，使得所述装置执行权利要求1至11任一项所述的方法，或者权利要求12至22任一项所述的方法。
  47. 一种计算机可读存储介质，其特征在于，包括指令，当其在计算机上运行时，使得计算机执行权利要求1至11任一项所述的方法，或者权利要求12至22任一项所述的方法。
  48. 一种计算机程序产品，其特征在于，包括计算机程序代码，当所述计算机程序代码被运行时，使得权利要求1至11任一项所述的方法，或者权利要求12至22任一项所述的方法被执行。
  49. 一种计算机程序，其特征在于，包括计算机程序代码，当所述计算机程序代码被运行时，使得权利要求1至11任一项所述的方法，或者权利要求12至22任一项所述的方法被执行。
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CN106716825A (zh) * 2014-07-21 2017-05-24 科希尔技术股份有限公司 操作和实施无线otfs通信系统的方法
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