WO2018177141A1 - 一种参考信号发送方法、终端设备和接入网设备 - Google Patents

一种参考信号发送方法、终端设备和接入网设备 Download PDF

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Publication number
WO2018177141A1
WO2018177141A1 PCT/CN2018/079270 CN2018079270W WO2018177141A1 WO 2018177141 A1 WO2018177141 A1 WO 2018177141A1 CN 2018079270 W CN2018079270 W CN 2018079270W WO 2018177141 A1 WO2018177141 A1 WO 2018177141A1
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WIPO (PCT)
Prior art keywords
resource
reference signal
control information
terminal device
access network
Prior art date
Application number
PCT/CN2018/079270
Other languages
English (en)
French (fr)
Inventor
刘德平
鲁振伟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019546032A priority Critical patent/JP7081736B2/ja
Priority to EP18776618.3A priority patent/EP3579658A4/en
Publication of WO2018177141A1 publication Critical patent/WO2018177141A1/zh
Priority to US16/577,830 priority patent/US11246125B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • Embodiments of the present application relate to a communication system, and in particular, to a reference signal transmitting method, a terminal device, and an access network device.
  • the access network device or the terminal device estimates the channel through a reference signal within a certain time-frequency resource range.
  • the terminal device will receive reference signals from the access network device for channel estimation, and for the uplink, the access network device will receive reference signals from the terminal device for channel estimation, for the side-link, The terminal device will receive reference signals from other terminal devices for channel estimation.
  • V2D Device to Device
  • V2V Vehicle to Vehicle
  • V2P Vehicle to Pedestrian
  • V2I/N Vehicle/Infrastructure/Network
  • V2X Vehicle to Infrastructure/ Network
  • the channel estimation can be effectively performed by the reference signal, and in the subframe in which the data is transmitted, one subframe includes two slots. There are a total of fourteen symbols, of which four are fixed for transmitting the reference signal. Specifically, among the resources allocated to the data, all of the four frequency symbols will be used to transmit the reference signal. When the vehicle speed is relatively low, the existing reference signal method occupies more symbols, which wastes resources, and the existing reference signal transmission method that occupies a fixed four symbols also lacks flexibility.
  • the embodiments of the present application provide a reference signal sending method, a terminal device, and an access network device, which can improve the flexibility of reference signal transmission and save resources.
  • the first aspect provides a reference signal sending method, including: the first device sends the first control information to the second device, where the first control information is used to indicate that the first device sends the first resource of the reference signal; The first device sends the reference signal to the second device on the first resource.
  • the first resource includes a first time-frequency resource
  • the first device sends the reference signal to the second device on the first resource, including: the first The device sends the reference signal to the second device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the first device sends the reference signal to the second device on the first resource, including: the first The device sends the reference signal to the second device on a time-frequency resource formed by the first time domain resource and the predefined frequency domain resource; or the first resource includes a first frequency domain resource, Transmitting, by the first device, the reference signal to the second device on the first resource, where the first device is on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource Transmitting the reference signal to the second device.
  • the first device comprises an access network device and the second device comprises a terminal device.
  • the first control information is included in the downlink control information.
  • the first device comprises a first terminal device and the second device comprises a second terminal device.
  • the first control information is included in the side line control information.
  • the first control information is received by the first terminal device from an access network device.
  • a second aspect a method for receiving a reference signal, comprising: receiving, by a second device, first control information from a first device, where the first control information is used to indicate that the first device sends a first resource of a reference signal; The second device receives the reference signal from the first device on the first resource.
  • the first resource includes a first time-frequency resource
  • the second device receives the reference signal from the first device on the first resource, including: the second The device receives the reference signal from the first device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the second device receives the reference signal from the first device on the first resource, including: the second The device receives the reference signal from the first device on a time-frequency resource composed of a first time domain resource and a predefined frequency domain resource; or the first resource includes a first frequency domain resource, Receiving, by the second device, the reference signal from the first device on the first resource, where the second device is on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource Receiving the reference signal from the first device.
  • the first device comprises an access network device and the second device comprises a terminal device.
  • the first control information is included in the downlink control information.
  • the first device comprises a first terminal device and the second device comprises a second terminal device.
  • the first control information is included in the side line control information.
  • the first control information is received by the first terminal device from an access network device.
  • a first device including: a sending unit, configured to send first control information to a second device, where the first control information is used to indicate that the first device sends a first resource of a reference signal;
  • the sending unit is further configured to send the reference signal to the second device on the first resource.
  • the first resource includes a first time-frequency resource
  • the sending unit is further configured to send the reference signal to the second device on the first resource, including: The transmitting unit sends the reference signal to the second device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the sending unit is further configured to send the reference signal to the second device on the first resource, including: The transmitting unit sends the reference signal to the second device on a time-frequency resource formed by the first time domain resource and the predefined frequency domain resource; or the first resource includes a first frequency domain resource
  • the sending unit is further configured to send the reference signal to the second device on the first resource, where the sending unit is configured by a first frequency domain resource and a predefined time domain resource.
  • the reference signal is sent to the second device on a time-frequency resource.
  • the first device comprises an access network device and the second device comprises a terminal device.
  • the first control information is included in the downlink control information.
  • the first device comprises a first terminal device and the second device comprises a second terminal device.
  • the first control information is included in the side line control information.
  • the first device further includes a receiving unit, and the first control information is received by the receiving unit from the access network device.
  • the processing unit may be a processor, and the sending unit may be a transmitter or a transceiver, and the receiving unit may be a receiver or a transceiver. Device.
  • a second device including: a receiving unit, configured to receive first control information from a first device, where the first control information is used to indicate that the first device sends a first resource of a reference signal;
  • the receiving unit is further configured to receive the reference signal from the first device on the first resource.
  • the first resource includes a first time-frequency resource
  • the receiving unit is further configured to receive the reference signal from the first device on the first resource, including: The receiving unit receives the reference signal from the first device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the receiving unit is further configured to receive the reference signal from the first device on the first resource, including: The receiving unit receives the reference signal from the first device on a time-frequency resource formed by the first time domain resource and the predefined frequency domain resource; or the first resource includes a first frequency domain resource, where The receiving unit is further configured to receive the reference signal from the first device on the first resource, including: when the receiving unit is configured by a first frequency domain resource and a predefined time domain resource The reference signal is received from the first device on a frequency resource.
  • the first device comprises an access network device and the second device comprises a terminal device.
  • the first control information is included in the downlink control information.
  • the first device comprises a first terminal device and the second device comprises a second terminal device.
  • the first control information is included in the side line control information.
  • the first control information is received by the first terminal device from an access network device.
  • the processing unit may be a processor, and the sending unit may be a transmitter or a transceiver, and the receiving unit may be a receiver or a transceiver. Device.
  • a fifth aspect a method for transmitting a reference signal, comprising: receiving, by a terminal device, first control information from an access network device, where the first control information is used to indicate that the terminal device sends a first resource of a reference signal; The terminal device sends the reference signal to the access network device on the first resource.
  • the first resource includes a first time-frequency resource
  • the terminal device sends the reference signal to the access network device on the first resource, including: the terminal device is Sending the reference signal to the access network device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the terminal device sends the reference signal to the access network device on the first resource, including: the terminal device is Transmitting, by the first time domain resource and the pre-defined frequency domain resource, the reference signal to the access network device; or the first resource includes a first frequency domain resource, where the terminal And sending, by the device, the reference signal to the access network device on the first resource, where the terminal device is on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource The access network device sends the reference signal.
  • the first control information is included in the downlink control information.
  • the sixth aspect provides a reference signal receiving method, including: the access network device sends the first control information to the terminal device, where the first control information is used to indicate that the terminal device sends the first resource of the reference signal; The access network device receives the reference signal from the terminal device on the first resource.
  • the first resource includes a first time-frequency resource
  • the access network device receives the reference signal from the terminal device on the first resource, including: the access network The device receives the reference signal from the terminal device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the access network device receives the reference signal from the terminal device on the first resource, including: the access network The device receives the reference signal from the terminal device on a time-frequency resource formed by the first time domain resource and the predefined frequency domain resource; or the first resource includes a first frequency domain resource, where the Receiving, by the network access device, the reference signal from the terminal device on the first resource, where the access network device is on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource. Receiving the reference signal from the terminal device.
  • the first control information is included in the downlink control information.
  • a terminal device includes: a receiving unit, configured to receive first control information from an access network device, where the first control information is used to indicate that the terminal device sends a first resource of a reference signal; And a unit, configured to send the reference signal to the access network device on the first resource.
  • the first resource includes a first time-frequency resource
  • the sending unit is configured to send the reference signal to the access network device on the first resource, including: And sending, by the sending unit, the reference signal to the access network device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the sending unit is configured to send the reference signal to the access network device on the first resource, including: The sending unit sends the reference signal to the access network device on a time-frequency resource formed by the first time domain resource and the predefined frequency domain resource; or the first resource includes a first frequency domain resource,
  • the sending unit is configured to send the reference signal to the access network device on the first resource, where the sending unit is configured by a first frequency domain resource and a predefined time domain resource.
  • the reference signal is sent to the access network device on a time-frequency resource.
  • the first control information is included in the downlink control information.
  • the processing unit may be a processor, and the sending unit may be a transmitter or a transceiver, and the receiving unit may be a receiver or a transceiver. Device.
  • the eighth aspect provides an access network device, including: a sending unit, configured to send first control information to the terminal device, where the first control information is used to indicate that the terminal device sends the first resource of the reference signal; And a unit, configured to receive the reference signal from the terminal device on the first resource.
  • the first resource includes a first time-frequency resource
  • the receiving unit is configured to receive the reference signal from the terminal device on the first resource, including: the receiving unit Receiving the reference signal from the terminal device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the receiving unit is configured to receive the reference signal from the terminal device on the first resource, including: the receiving unit Receiving, by the terminal device, the reference signal on a time-frequency resource composed of a first time domain resource and a predefined frequency domain resource; or, the first resource includes a first frequency domain resource, and the receiving unit And receiving, by the terminal device, the reference signal on the first resource, where the receiving unit is on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource.
  • the terminal device receives the reference signal.
  • the first control information is included in the downlink control information.
  • the processing unit may be a processor, and the sending unit may be a transmitter or a transceiver, and the receiving unit may be a receiver or a transceiver. Device.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use in the access network, including a program designed to perform the above aspects.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the terminal device, which includes a program designed to perform the above aspects.
  • the sending device sends the first control information to the receiving device, where the first control information is used to instruct the sending device to send or receive the first resource of the reference signal, and the sending device and the receiving device send the first resource. Or receiving the reference signal, whereby the transmission resource of the reference signal is no longer fixed, and the number or location of the transmission resources may be determined according to factors such as the speed of the terminal device, etc., for example, when the speed is slow, less resources may be configured for use.
  • the reference signal is transmitted, and the transmission resource of the reference signal is indicated by the first control information, which improves the flexibility of the reference signal transmission.
  • FIG. 1 is a schematic diagram of a reference signal transmission resource according to an embodiment of the present application.
  • FIG. 2 is a schematic architectural diagram of a system in accordance with an embodiment of the present application.
  • FIG. 3 is a reference signal transmitting or receiving method and system according to an embodiment of the present application.
  • FIG. 4 is a diagram of reference signal transmission resources in accordance with an embodiment of the present application.
  • FIG. 5 is a diagram of a reference signal transmission resource according to an embodiment of the present application.
  • FIG. 6 is a diagram of a reference signal transmission resource according to an embodiment of the present application.
  • 9 and 10 are a second device in accordance with an embodiment of the present application.
  • 11 and 12 are terminal devices according to an embodiment of the present application.
  • 13 and 14 are access network devices according to an embodiment of the present application.
  • the access network device sends a reference signal to the terminal device 1, and the terminal device 1 performs channel estimation on the downlink channel according to the reference signal received from the access network device.
  • the terminal device 1 transmits a reference signal to the access network device, and the access network device performs channel estimation on the uplink channel according to the reference signal received from the terminal device 1.
  • the terminal device 1 transmits a reference signal to the terminal device 2, and the terminal device 2 performs channel estimation on the side line channel based on the reference signal received from the terminal device 1.
  • the access network device involved in the present application is a device deployed in a radio access network to provide a wireless communication function for a terminal device.
  • the access network device may include various forms of base stations (BSs), such as macro base stations or micro base stations, relay stations or access points, and the like.
  • BSs base stations
  • the name of the device having the function of the access network device may be different, for example, in an LTE network, called an evolved Node B (referred to as an eNB or an eNodeB).
  • eNB evolved Node B
  • eNodeB evolved Node B
  • RSU Road Side Unit
  • the above devices for providing wireless communication functions for terminal devices are collectively referred to as access network devices.
  • the terminal device referred to in the present application may include various handheld devices having wireless communication functions, such as an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem, a mobile station (MS), Terminal or User Equipment (UE), etc.
  • MS mobile station
  • UE User Equipment
  • the above-mentioned devices are collectively referred to as terminal devices.
  • FIG. 3a is a reference signal transmitting and receiving method and system for V2X side line communication, and the specific steps are as follows:
  • the first terminal device sends the first control information to the second terminal device, and the second terminal device receives the first control information from the first terminal device, where the first control information is used to indicate the first terminal device.
  • the first resource that sends the reference signal is used to indicate the first terminal device.
  • Step 32a The first terminal device sends the reference signal to the second terminal device on the first resource, and the second terminal device receives the reference signal from the first terminal device on the first resource.
  • the first resource includes a first time-frequency resource
  • the method includes: the first terminal device sends the first terminal device to the second terminal device on the first time-frequency resource. a reference signal; the second terminal device receives the reference signal from the first terminal device on the first time-frequency resource.
  • the time-frequency resource shown in FIG. 4 is divided into 6 units in the time domain and 6 units in the frequency domain, and a small square in FIG. 4 is a minimum time-frequency unit.
  • the smallest unit in the time domain may be one of a subframe, a time slot, a minislot, or a symbol.
  • a unit for performing resource allocation or resource occupation in the time domain is a subframe and a time slot.
  • One of the minislots or symbols, the smallest unit in the frequency domain may be a subcarrier or other frequency domain resource granularity.
  • the first resource indicated by the first control information is a time-frequency resource, that is, the first control information indicates both a time domain resource for transmitting the reference signal, and a frequency domain resource for transmitting the reference signal, and the reference signal is sent.
  • the time-frequency resource may have four different time-frequency resource patterns of a, b, c, and d
  • the first control information may indicate a specific time-frequency resource for transmitting the reference signal, such as a time-frequency resource a or a time-frequency resource b.
  • the first control information may also indicate which of the a, b, c, or d the time-frequency resource of the transmitted reference signal is.
  • the correspondence between the value indicated by the first control information and the transmission resource of the reference signal may be fixed or configurable, such as being determined by the access network device and sent to the first terminal device.
  • the first control information has four values of 0, 1, 2, and 3
  • the transmission resources of the reference signal are four different time-frequency resource patterns a, b, c, and d, and the corresponding relationship is 0-a, 1-b, 2-c, and 3-d are fixed.
  • the access network device may determine the correspondence between 0, 1, 2, and 3 and the time-frequency resource pattern and notify the first terminal device, where the correspondence is variable, and may be 0-a, 1-b Further, 2-c and 3-d may be 0-e, 1-f, 2-g, and 3-h, and may be other corresponding methods.
  • the first resource includes a first time domain resource
  • the method includes: the first terminal device is in a time frequency formed by the first time domain resource and the predefined frequency domain resource. Transmitting, by the resource, the reference signal to the second terminal device; the second terminal device receiving, at the time-frequency resource formed by the first time domain resource and the predefined frequency domain resource, from the first terminal device The reference signal.
  • the first control information only indicates that the time-frequency resource for transmitting the reference signal is the first unit to the sixth unit (mode a) or the first, third, fourth, and sixth units in the time domain.
  • the time-frequency resource for transmitting the reference signal is a predefined frequency domain resource in the frequency domain, for example, the first, third and fifth units in the frequency domain are used for transmitting
  • the reference signal that is, the shaded portion in FIG. 5a or FIG. 5b is used for transmitting and receiving the reference signal, and the transmitting device and the receiving device may determine the time domain resource for transmitting the reference signal according to the first control information, and then according to the time domain resource and
  • the predefined frequency domain resource determines the time-frequency resource for transmitting the reference signal, and then transmits or receives the reference signal on the current frequency resource.
  • the predefined frequency domain resource may be a fixed frequency domain resource or a configurable frequency domain resource.
  • the first control information may indicate a specific time domain resource for sending the reference signal.
  • the first control information may also indicate that the time domain resource of the reference signal is sent in different manners, as indicated by mode a or mode b, where mode a is the first unit to the sixth unit, and mode b is 1, 3, 4 and 6 units, these methods a or b can be fixed or configurable.
  • the first resource includes a first frequency domain resource
  • the method includes: the first terminal device is in a time frequency formed by the first frequency domain resource and the predefined time domain resource. Transmitting, by the resource, the reference signal to the second terminal device; the second terminal device receiving, on the time-frequency resource formed by the first frequency domain resource and the predefined time domain resource, from the first terminal device The reference signal.
  • the first control information only indicates that the time-frequency resource of the transmission reference signal is the second, fourth, and sixth units (mode a) or the first, third, and fifth units in the frequency domain.
  • the time-frequency resource for transmitting the reference signal is a predefined time domain resource in the time domain, for example, all units in the time domain are used to transmit the reference signal, that is, the shaded portion in FIG. 6a or FIG. 6b is used for reference.
  • the transmitting and receiving of the signal, the sending device and the receiving device may determine the frequency domain resource for transmitting the reference signal according to the first control information, and then determine the time-frequency resource for transmitting the reference signal according to the frequency domain resource and the predefined time domain resource, The reference signal is then transmitted or received on the current frequency resource.
  • the predefined time domain resource is a fixed time domain resource or a configurable time domain resource.
  • the first control information may indicate a specific frequency domain resource that sends the reference signal.
  • the frequency domain resource for transmitting the reference signal may be that the predefined mode a is the second, fourth, and sixth units, or the mode b is the first, third, and fifth units, and the first control information may also indicate that the reference signal is sent.
  • the time domain resource is either mode a or mode b.
  • the first control information is included in the side line control information.
  • FIG. 3b is a reference signal transmitting and receiving method and system for downlink communication, and the specific steps are as follows:
  • the access network device sends the first control information to the terminal device, and the terminal device receives the first control information from the access network device, where the first control information is used to indicate that the access network device sends the first reference signal. Resources.
  • Step 32b the access network device sends the reference signal to the terminal device on the first resource, and the terminal device receives the reference signal from the access network device on the first resource.
  • the first resource includes a first time-frequency resource
  • the method includes: the access network device sending the reference signal to the terminal device on the first time-frequency resource.
  • the terminal device receives the reference signal from the access network device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the method includes: the time network of the access network device in a first time domain resource and a predefined frequency domain resource. Transmitting, by the resource, the reference signal to the terminal device; the terminal device receiving the reference signal from the access network device on a time-frequency resource formed by a first time domain resource and a predefined frequency domain resource.
  • the first resource includes a first frequency domain resource
  • the method includes: the time frequency of the access network device formed by the first frequency domain resource and the predefined time domain resource Transmitting, by the resource, the reference signal to the terminal device; the terminal device receiving the reference signal from the access network device on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource
  • the first control information is included in downlink control information or RRC signaling.
  • FIG. 3c is a reference signal transmitting and receiving method and system for uplink communication, and the specific steps are as follows:
  • the terminal device receives the first control information from the access network device, and the access network device sends the first control information to the terminal device, where the first control information is used to instruct the terminal device to send the first resource of the reference signal.
  • Step 32c The terminal device sends the reference signal to the access network device on the first resource, where the access network device receives the reference signal from the terminal device on the first resource.
  • the first resource includes a first time-frequency resource
  • the method includes: the terminal device sending the reference signal to the access network device on the first time-frequency resource.
  • the access network device receives the reference signal from the terminal device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the method includes: the terminal device is on a time-frequency resource formed by the first time domain resource and the predefined frequency domain resource. Transmitting the reference signal to the access network device; the access network device receiving the reference signal from the terminal device on a time-frequency resource formed by a first time domain resource and a predefined frequency domain resource.
  • the first resource includes a first frequency domain resource
  • the method includes: the terminal device is on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource. Transmitting the reference signal to the access network device; the access network device receiving the reference signal from the terminal device on a time-frequency resource formed by a first frequency domain resource and a predefined time domain resource.
  • the first control information indicates a time-frequency resource pattern.
  • the first control information is included in side line control information, downlink control information, or RRC signaling.
  • the first control information may be indicated by a new field added in the side control information and the downlink control information, or may be through the side control information or the downlink.
  • a domain indication that already exists in the control information The following describes the side-line control information as an example.
  • the existing domain indication in the side-line control information one possible way is to use different Cyclic Redundancy Check (CRC) bits.
  • CRC Cyclic Redundancy Check
  • the mask is scrambled to indicate the first control information. For example, different masks may correspond to different resources for transmitting the reference signal.
  • the mask of the sending side may be determined by blind detection, and then Obtain resources of the transmission reference signal corresponding to different masks.
  • the reference signal is also periodically transmitted correspondingly, the first control
  • the information may indicate the resources of the reference signal that is periodically transmitted.
  • the resources of the plurality of periodically transmitted reference signals may be indicated in the same first control information, that is, “concentrated indication”; or may be sent to multiple periodically in the multiple first control information.
  • the resources of the reference signal are respectively indicated, that is, "respectively indicated”.
  • the reference signal is correspondingly transmitted multiple times, for the transmission resources of the plurality of reference signals, the subsequent reference signals.
  • the transmission resource or the transmission resource pattern may be determined according to a transmission resource or a transmission resource pattern of the previous reference signal, for example, the transmission resource or the transmission resource pattern of the previous reference signal is the same or related, or the transmission resource or transmission resource pattern of the subsequent reference signal may also be
  • the first control information indicates or the like.
  • the first terminal device or the terminal device sends auxiliary information to the access network device, and the auxiliary information includes the first terminal device Speed and/or acceleration and/or direction of movement and/or geographic location and/or channel condition information, etc., said access network device determining transmission resources of reference signals based on said assistance information, said access network device
  • the first terminal device or the terminal device sends the first control information, where the first control information is used to indicate the first resource that sends the reference signal.
  • the first control information is included in downlink control information (Downlink Control Information, DCI) or Radio Resource Control (RRC) signaling sent by the access network device to the first terminal device or the terminal device.
  • DCI Downlink Control Information
  • RRC Radio Resource Control
  • reference signal transmission resources on respective antenna ports or layers may be different.
  • the first control information may indicate reference signal transmission resources on multiple antenna ports or layers.
  • the downlink control information or the side row control information further indicates a second resource, where the first resource is part of the second resource, that is, the reference
  • the transmission resource of the signal is part of the second resource.
  • the second resource is a time-frequency resource that the access network device sends data to the terminal device, or the second resource is a time-frequency resource that the terminal device sends data to the access network device, or the second resource is the first resource.
  • the terminal device sends the time-frequency resource of the data to the second terminal device.
  • the first resource may be determined according to the second resource and the first control information.
  • the first control information indicates that the reference signal is transmitted in the second, fourth, and sixth units of the time domain (as in mode a), and the second, fourth, and sixth units of the time domain are as described.
  • the second, fourth, and sixth units of the time domain in the second resource, the transmitting device and the receiving device transmit or receive the reference signal on the second, fourth, and sixth units of the time domain of the second resource.
  • the first control information indicates a reference signal time-frequency resource pattern, where the time-frequency resource pattern is a transmission resource location of a reference signal in a time-frequency resource range, such as a resource block (Resource Block, RB). .
  • the downlink control information or the side-line control information indicates that the resource for transmitting data is five resource blocks, and in each resource block, the reference signal transmission is determined according to the reference signal time-frequency resource pattern indicated by the first control information.
  • the resource, the transmitting device and the receiving device transmit or receive a reference signal on a reference signal transmission resource within the five resource blocks.
  • the sending device sends the first control information to the receiving device, where the first control information is used to instruct the sending device to send or receive the first resource of the reference signal, where the sending device may be the first terminal device or the access network.
  • the device, the receiving device may be a terminal device or a second terminal device, where the sending device and the receiving device send or receive the reference signal on the first resource, whereby the sending resource of the reference signal is no longer It is fixed, and the number or location of the transmission resources may be determined according to factors such as the speed of the terminal device. For example, when the speed is slow, less resources may be configured for transmitting the reference signal, and the transmission resource of the reference signal is indicated by the first control information. Improves the flexibility of reference signal transmission.
  • FIG. 7 shows a possible schematic diagram of a first device for performing the method in the embodiment of FIGS. 3a and 3b, the first device comprising a transmitting unit 701.
  • the first device may be a first terminal device or an access network device.
  • the sending unit 701 is configured to send the first control information to the second device, where the first control information is used to instruct the first device to send the first resource of the reference signal.
  • the sending unit 701 is further configured to send the reference signal to the second device on the first resource.
  • the first resource includes a first time-frequency resource
  • the sending unit is further configured to send the reference signal to the second device on the first resource, including: The transmitting unit sends the reference signal to the second device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the sending unit is further configured to send the reference signal to the second device on the first resource, including: The transmitting unit sends the reference signal to the second device on a time-frequency resource composed of a first time domain resource and a predefined frequency domain resource.
  • the first resource includes a first frequency domain resource
  • the sending unit is further configured to send the reference signal to the second device on the first resource, including: The transmitting unit sends the reference signal to the second device on a time-frequency resource composed of a first frequency domain resource and a predefined time domain resource.
  • the first device for downlink communication, includes an access network device, and the second device includes a terminal device.
  • the first control information is included in the downlink control information.
  • the first device for side-by-side communication, comprises a first terminal device and the second device comprises a second terminal device.
  • the first control information is included in the side row control information.
  • the first device further includes a receiving unit, where the first control information is received by the receiving unit from an access network device.
  • the sending unit 701 can be a transmitter 801 or a transceiver.
  • the first device may further include a processor 802.
  • the first device may further include a memory 803, where the memory 803 is configured to store program codes and data of the first device, as shown in FIG. 8.
  • the first device sends the first control information to the second device, where the first control information is used to indicate that the first device sends or receives the first resource of the reference signal, where the first device may be the first terminal device.
  • the second device may be a terminal device or a second terminal device, where the first device and the second device send or receive the reference signal on the first resource, thereby
  • the transmission resource of the reference signal is no longer fixed.
  • the number or location of the transmission resources may be determined according to factors such as the speed of the terminal device. For example, when the speed is slow, less resources may be configured for transmitting the reference signal, and the reference signal is sent. It is indicated by the first control information, which improves the flexibility of the reference signal transmission.
  • FIG. 9 shows a possible schematic diagram of a second device for performing the method involved in the embodiment of FIGS. 3a and 3b, the second device comprising a receiving unit 901.
  • the second device may be a second terminal device or a terminal device.
  • the receiving unit 901 is configured to receive first control information from the first device, where the first control information is used to instruct the first device to send the first resource of the reference signal.
  • the receiving unit 901 is further configured to receive the reference signal from the first device on the first resource.
  • the first resource includes a first time-frequency resource
  • the receiving unit is further configured to receive the reference signal from the first device on the first resource, including: The receiving unit receives the reference signal from the first device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the receiving unit is further configured to receive the reference signal from the first device on the first resource, including: The receiving unit receives the reference signal from the first device on a time-frequency resource composed of a first time domain resource and a predefined frequency domain resource.
  • the first resource includes a first frequency domain resource
  • the receiving unit is further configured to receive the reference signal from the first device on the first resource, including: The receiving unit receives the reference signal from the first device on a time-frequency resource composed of a first frequency domain resource and a predefined time domain resource.
  • the first device comprises an access network device
  • the second device comprises a terminal device.
  • the first control information is included in the downlink control information.
  • the first device comprises a first terminal device
  • the second device comprises a second terminal device.
  • the first control information is included in the side row control information.
  • the first control information is received by the first terminal device from an access network device.
  • the receiving unit 901 can be a receiver 1001 or a transceiver.
  • the second device may further include a processor 1002.
  • the second device may further include a memory 1003, where the memory 1003 is configured to store program codes and data of the first device, as shown in FIG.
  • the first device sends the first control information to the second device, where the first control information is used to indicate that the first device sends or receives the first resource of the reference signal, where the first device may be the first terminal device.
  • the second device may be a terminal device or a second terminal device, where the first device and the second device send or receive the reference signal on the first resource, thereby
  • the transmission resource of the reference signal is no longer fixed.
  • the number or location of the transmission resources may be determined according to factors such as the speed of the terminal device. For example, when the speed is slow, less resources may be configured for transmitting the reference signal, and the reference signal is sent. It is indicated by the first control information, which improves the flexibility of the reference signal transmission.
  • Figure 11 shows a possible schematic diagram of a terminal device for performing the method involved in the embodiment of Figure 3c, the terminal device comprising a receiving unit 1101 and a transmitting unit 1102.
  • the receiving unit 1101 is configured to receive first control information from the access network device, where the first control information is used to indicate that the terminal device sends the first resource of the reference signal.
  • the sending unit 1102 is configured to send the reference signal to the access network device on the first resource.
  • the first resource includes a first time-frequency resource
  • the sending unit 1102 is configured to send the reference signal to the access network device on the first resource, including: The sending unit 1102 sends the reference signal to the access network device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the sending unit 1102 is configured to send the reference signal to the access network device on the first resource, including: The sending unit 1102 sends the reference signal to the access network device on a time-frequency resource composed of a first time domain resource and a predefined frequency domain resource.
  • the first resource includes a first frequency domain resource
  • the sending unit 1102 is configured to send the reference signal to the access network device on the first resource, including: The sending unit 1102 sends the reference signal to the access network device on a time-frequency resource composed of a first frequency domain resource and a predefined time domain resource.
  • the first control information is included in downlink control information.
  • the receiving unit 1101 may be a receiver 1201 or a transceiver
  • the transmitting unit 1102 may be a transmitter 1202 or a transceiver.
  • the first device may further include a processor 1203.
  • the first device may further include a memory 1204, where the memory 1204 is configured to store program codes and data of the terminal device, as shown in FIG. 12 .
  • the access network device sends the first control information to the terminal device, where the first control information is used to indicate that the terminal device sends the first resource of the reference signal, and the access network device is on the first resource.
  • Receiving the reference signal whereby the transmission resource of the reference signal is no longer fixed, and the number or location of the transmission resources may be determined according to factors such as the speed of the terminal device, etc., for example, when the speed is slow, less resources may be configured for sending.
  • the reference signal and the transmission resource of the reference signal are indicated by the first control information, which improves the flexibility of the reference signal transmission.
  • FIG. 13 shows a possible schematic diagram of an access network device for performing the method in the embodiment of FIG. 3c, the terminal device comprising a transmitting unit 1301 and a receiving unit 1302.
  • the sending unit 1301 is configured to send first control information to the terminal device, where the first control information is used to instruct the terminal device to send the first resource of the reference signal.
  • the receiving unit 1302 is configured to receive the reference signal from the terminal device on the first resource.
  • the first resource includes a first time-frequency resource
  • the receiving unit 1302 is configured to receive the reference signal from the terminal device on the first resource, including: The receiving unit 1302 receives the reference signal from the terminal device on the first time-frequency resource.
  • the first resource includes a first time domain resource
  • the receiving unit 1302 is configured to receive the reference signal from the terminal device on the first resource, including: The receiving unit 1302 receives the reference signal from the terminal device on a time-frequency resource composed of a first time domain resource and a predefined frequency domain resource.
  • the first resource includes a first frequency domain resource
  • the receiving unit 1302 is configured to receive the reference signal from the terminal device on the first resource, including: The receiving unit 1302 receives the reference signal from the terminal device on a time-frequency resource composed of a first frequency domain resource and a predefined time domain resource.
  • the first control information is included in downlink control information.
  • the receiving unit 1302 may be a receiver 1402 or a transceiver
  • the sending unit 1301 may be a transmitter 1401 or a transceiver
  • the first device may further include a processor 1403.
  • the first device may further include a memory 1404, where the memory 1404 is configured to store program codes and data of the terminal device, as shown in FIG. 14.
  • the access network device sends the first control information to the terminal device, where the first control information is used to indicate that the terminal device sends the first resource of the reference signal, and the access network device is on the first resource.
  • Receiving the reference signal whereby the transmission resource of the reference signal is no longer fixed, and the number or location of the transmission resources may be determined according to factors such as the speed of the terminal device, etc., for example, when the speed is slow, less resources may be configured for sending.
  • the reference signal and the transmission resource of the reference signal are indicated by the first control information, which improves the flexibility of the reference signal transmission.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

一种参考信号发送或接收方法、终端设备、接入网设备和系统，所述方法包括：第一设备向第二设备发送第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；所述第一设备在所述第一资源上向所述第二设备发送所述参考信号。参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。

Description

一种参考信号发送方法、终端设备和接入网设备
本申请要求于2017年3月31日提交中国专利局、申请号为201710210775.5、申请名称为“一种参考信号发送方法、终端设备和接入网设备”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
本申请的实施例涉及通信系统，尤其是涉及一种参考信号发送方法、终端设备和接入网设备。
背景技术
接入网设备或终端设备会通过某一时频资源范围内的参考信号对信道进行估计。对于下行链路，终端设备会从接入网设备接收参考信号以用于信道估计，对于上行链路，接入网设备会从终端设备接收参考信号以用于信道估计，对于侧行链路，终端设备会从其它终端设备接收参考信号以用于信道估计。
设备到设备(Device to Device，D2D)通信、车与车(Vehicle to Vehicle，V2V)通信、车与行人V2P(Vehicle to Pedestrian，V2P)通信或车与基建/网络V2I/N(Vehicle to Infrastructure/Network，V2I/N)通信是终端设备(terminal device)之间直接进行通信的技术，V2V、V2P以及V2I/N统称为V2X，即车与任何事物相通信。
如图1所示，以V2X通信为例，为了满足车辆在最高速行驶的情况下也能够有效的通过参考信号完成信道估计，在发送数据的子帧中，一个子帧包含两个时隙，共十四个符号，其中有固定的四个符号用于传输参考信号，具体地，在分配给数据的资源中，这四个符号中的所有频域资源将会用于传输参考信号。当车辆速度比较低时，现有的这种参考信号方式会占用较多的符号，浪费了资源，而且，现有的占用固定的四个符号的参考信号发送方法也缺乏灵活性。
因此，业界亟需一种节省资源并且灵活性高的参考信号发送技术方案。
发明内容
本申请的实施例提供一种参考信号发送方法、终端设备和接入网设备，能够提高参考信号发送的灵活性并节省资源。
第一方面，提供了一种参考信号发送方法，包括：第一设备向第二设备发送第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；所述第一设备在所述第一资源上向所述第二设备发送所述参考信号。
在一种可能的设计中，所述第一资源包括第一时频资源，所述第一设备在所述第一资源上向所述第二设备发送所述参考信号，包括：所述第一设备在所述第一时频资源上向所述第二设备发送所述参考信号。
在一种可能的设计中，所述第一资源包括第一时域资源，所述第一设备在所述第一资源上向所述第二设备发送所述参考信号，包括：所述第一设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述第二设备发送所述参考信号；或，所述第一资源包括第一频域资源，所述第一设备在所述第一资源上向所述第二设备发送所述参考 信号，包括：所述第一设备在由第一频域资源和预定义的时域资源所构成的时频资源上向所述第二设备发送所述参考信号。
在一种可能的设计中，所述第一设备包括接入网设备，所述第二设备包括终端设备。
在一种可能的设计中，所述第一控制信息包含在下行控制信息中。
在一种可能的设计中，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
在一种可能的设计中，所述第一控制信息包含在侧行控制信息中。
在一种可能的设计中，所述第一控制信息为所述第一终端设备从接入网设备接收的。
第二方面，提供一种参考信号接收方法，包括：第二设备从第一设备接收第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；所述第二设备在所述第一资源上从所述第一设备接收所述参考信号。
在一种可能的设计中，所述第一资源包括第一时频资源，所述第二设备在所述第一资源上从所述第一设备接收所述参考信号，包括：所述第二设备在所述第一时频资源上从所述第一设备接收所述参考信号。
在一种可能的设计中，所述第一资源包括第一时域资源，所述第二设备在所述第一资源上从所述第一设备接收所述参考信号，包括：所述第二设备在由第一时域资源和预定义的频域资源所构成的时频资源上从所述第一设备接收所述参考信号；或，所述第一资源包括第一频域资源，所述第二设备在所述第一资源上从所述第一设备接收所述参考信号，包括：所述第二设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述第一设备接收所述参考信号。
在一种可能的设计中，所述第一设备包括接入网设备，所述第二设备包括终端设备。
在一种可能的设计中，所述第一控制信息包含在下行控制信息中。
在一种可能的设计中，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
在一种可能的设计中，所述第一控制信息包含在侧行控制信息中。
在一种可能的设计中，所述第一控制信息为所述第一终端设备从接入网设备接收的。
第三方面，提供一种第一设备，包括：发送单元，用于向第二设备发送第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号。
在一种可能的设计中，所述第一资源包括第一时频资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：所述发送单元在所述第一时频资源上向所述第二设备发送所述参考信号。
在一种可能的设计中，所述第一资源包括第一时域资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：所述发送单元在由第一时域资源和预定义的频域资源所构成的时频资源上向所述第二设备发送所述参考信号；或，所述第一资源包括第一频域资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：所述发送单元在由第一频域资源和预定义的时域资源所构成的时频资源上向所述第二设备发送所述参考信号。
在一种可能的设计中，所述第一设备包括接入网设备，所述第二设备包括终端设备。
在一种可能的设计中，所述第一控制信息包含在下行控制信息中。
在一种可能的设计中，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
在一种可能的设计中，所述第一控制信息包含在侧行控制信息中。
在一种可能的设计中，所述第一设备还包括接收单元，所述第一控制信息为所述接收单元从接入网设备接收的。
在一个可能的设计中，所述处理单元可以为处理器(processor)，所述发送单元可以为发送器(transmitter)或收发器(transceiver)，所述接收单元可以为接收器(receiver)或收发器。
第四方面，提供一种第二设备，包括：接收单元，用于从第一设备接收第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号。
在一个可能的设计中，所述第一资源包括第一时频资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：所述接收单元在所述第一时频资源上从所述第一设备接收所述参考信号。
在一个可能的设计中，所述第一资源包括第一时域资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：所述接收单元在由第一时域资源和预定义的频域资源所构成的时频资源上从所述第一设备接收所述参考信号；或，所述第一资源包括第一频域资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：所述接收单元在由第一频域资源和预定义的时域资源所构成的时频资源上从所述第一设备接收所述参考信号。
在一个可能的设计中，所述第一设备包括接入网设备，所述第二设备包括终端设备。
在一个可能的设计中，所述第一控制信息包含在下行控制信息中。
在一个可能的设计中，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
在一个可能的设计中，所述第一控制信息包含在侧行控制信息中。
在一个可能的设计中，所述第一控制信息为所述第一终端设备从接入网设备接收的。
在一个可能的设计中，所述处理单元可以为处理器(processor)，所述发送单元可以为发送器(transmitter)或收发器(transceiver)，所述接收单元可以为接收器(receiver)或收发器。
第五方面，提供一种参考信号发送方法，包括：终端设备从接入网设备接收第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号。
在一个可能的设计中，所述第一资源包括第一时频资源，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述终端设备在所述第一时频资源上向所述接入网设备发送所述参考信号。
在一个可能的设计中，所述第一资源包括第一时域资源，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述终端设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述接入网设备发送所述参考信号；或，所述第一资源包括第一频域资源，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述终端设备在由第一频域资源和预定义的时域资源所构成的时频 资源上向所述接入网设备发送所述参考信号。
在一个可能的设计中，所述第一控制信息包含在下行控制信息中。
第六方面，提供一种参考信号接收方法，包括：接入网设备向终端设备发送第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号。
在一个可能的设计中，所述第一资源包括第一时频资源，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接入网设备在所述第一时频资源上从所述终端设备接收所述参考信号。
在一个可能的设计中，所述第一资源包括第一时域资源，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接入网设备在由第一时域资源和预定义的频域资源所构成的时频资源上从所述终端设备接收所述参考信号；或，所述第一资源包括第一频域资源，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接入网设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述终端设备接收所述参考信号。
在一个可能的设计中，所述第一控制信息包含在下行控制信息中。
第七方面，提供一种终端设备，包括：接收单元，用于从接入网设备接收第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号。
在一个可能的设计中，所述第一资源包括第一时频资源，所述发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述发送单元在所述第一时频资源上向所述接入网设备发送所述参考信号。
在一个可能的设计中，所述第一资源包括第一时域资源，所述发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述发送单元在由第一时域资源和预定义的频域资源所构成的时频资源上向所述接入网设备发送所述参考信号；或，所述第一资源包括第一频域资源，所述发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述发送单元在由第一频域资源和预定义的时域资源所构成的时频资源上向所述接入网设备发送所述参考信号。
在一个可能的设计中，所述第一控制信息包含在下行控制信息中。
在一个可能的设计中，所述处理单元可以为处理器(processor)，所述发送单元可以为发送器(transmitter)或收发器(transceiver)，所述接收单元可以为接收器(receiver)或收发器。
第八方面，提供一种接入网设备，包括：发送单元，用于向终端设备发送第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号。
在一个可能的设计中，所述第一资源包括第一时频资源，所述接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接收单元在所述第一时频资源上从所述终端设备接收所述参考信号。
在一个可能的设计中，所述第一资源包括第一时域资源，所述接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接收单元在由第一时域资 源和预定义的频域资源所构成的时频资源上从所述终端设备接收所述参考信号；或，所述第一资源包括第一频域资源，所述接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接收单元在由第一频域资源和预定义的时域资源所构成的时频资源上从所述终端设备接收所述参考信号。
在一个可能的设计中，所述第一控制信息包含在下行控制信息中。
在一个可能的设计中，所述处理单元可以为处理器(processor)，所述发送单元可以为发送器(transmitter)或收发器(transceiver)，所述接收单元可以为接收器(receiver)或收发器。
第九方面，本申请实施例提供了一种计算机存储介质，用于储存为上述接入网所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第十方面，本申请实施例提供了一种计算机存储介质，用于储存为上述终端设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
通过上述方案，发送设备向接收设备发送第一控制信息，第一控制信息用于指示发送设备发送或接收参考信号的第一资源，所述发送设备和接收设备则在所述第一资源上发送或者接收所述参考信号，由此，参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。
附图说明
图1是根据本申请实施例的参考信号发送资源示意图。
图2是根据本申请实施例的系统的示意性架构图。
图3是根据本申请实施例的一种参考信号发送或接收方法及系统。
图4是根据本申请实施例的参考信号传输资源图。
图5是根据本申请实施例的参考信号传输资源图。
图6是根据本申请实施例的参考信号传输资源图。
图7、8是根据本申请实施例的一种第一设备。
图9、10是根据本申请实施例的一种第二设备。
图11、12是根据本申请实施例的一种终端设备。
图13、14是根据本申请实施例的一种接入网设备。
具体实施方式
如图2所示，对于下行信道估计，接入网设备会向终端设备1发送参考信号，终端设备1会根据从接入网设备接收的参考信号对下行信道进行信道估计。对于上行信道估计，终端设备1会向接入网设备发送参考信号，接入网设备会根据从终端设备1接收的参考信号对上行信道进行信道估计。对于侧行信道估计，终端设备1会向终端设备2发送参考信号，终端设备2会根据从终端设备1接收的参考信号对侧行信道进行信道估计。
本申请所涉及到的接入网设备是一种部署在无线接入网中用以为终端设备提供无 线通信功能的装置。所述接入网设备可以包括各种形式的基站(Base Station，BS)，例如，宏基站或微基站，中继站或接入点等等。在采用不同的无线接入技术的系统中，具备接入网设备功能的设备的名称可能会有所不同，例如在LTE网络中，称为演进的节点B(evolved NodeB简称：eNB或者eNodeB),在第三代3G网络中，称为节点B(Node B)等等，或者V2V通信中的路边单元(Road Side Unit，RSU)。为方便描述，本申请中，上述为终端设备提供无线通信功能的装置统称为接入网设备。
本申请所涉及到的终端设备可以包括各种具有无线通信功能的手持设备，例如，车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，移动台(Mobile station，MS)，终端(terminal)或用户设备(User Equipment，UE)等等。为方便描述，本申请中，上面提到的设备统称为终端设备。
下面结合具体例子，更加详细地描述本申请的实施例。
图3a为V2X侧行通信的一种参考信号发送、接收方法及系统，具体步骤如下：
步骤31a，第一终端设备向第二终端设备发送第一控制信息，第二终端设备从第一终端设备接收所述第一控制信息，其中，第一控制信息用于指示所述第一终端设备发送参考信号的第一资源。
步骤32a，第一终端设备在所述第一资源上向所述第二终端设备发送所述参考信号，第二终端设备在所述第一资源上从所述第一终端设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述方法包括：所述第一终端设备在所述第一时频资源上向所述第二终端设备发送所述参考信号；所述第二终端设备在所述第一时频资源上从所述第一终端设备接收所述参考信号。具体如图4所示，图4所示的时频资源，在时域上分为6个单元，在频域上也分为6个单元，则图4一个小方块为一个最小的时频单元。图4中，时域上的最小单元可以为子帧、时隙、微时隙或者符号中的一种，可选的，在时域上进行资源分配或资源占用的单元为子帧、时隙、微时隙或者符号中的一种，频域上的最小单元可以为子载波或其它的频域资源粒度。在图4中，第一控制信息指示的第一资源为时频资源，即第一控制信息既指示了发送参考信号的时域资源，也指示了发送参考信号的频域资源，参考信号的发送时频资源可以有a、b、c和d四种不同的时频资源图样(pattern)，第一控制信息可以指示发送参考信号的具体时频资源，如时频资源a或时频资源b等。第一控制信息也可以指示发送参考信号的时频资源为a、b、c或d的哪一个。可选的，第一控制信息所指示的取值与参考信号的传输资源的对应关系可以是固定的，也可以是可配置的，如可以由接入网设备确定并发送给第一终端设备。对于固定的情况，例如，第一控制信息有4种取值0、1、2和3，而参考信号的传输资源为4种不同的时频资源图样a、b、c和d，对应关系为0-a、1-b、2-c及3-d是固定不变的。对于可配置的情况，例如，第一控制信息有4种取值0、1、2和3，而参考信号的传输资源为8种不同的时频资源图样a、b、c、d、e、g和h，接入网设备可以确定0、1、2和3与时频资源图样的对应关系并通知第一终端设备，所述对应关系是可变的，可以为0-a、1-b、2-c及3-d，也可以为0-e、1-f、2-g及3-h等，也可以为其它的对应方式。
在可选的实施例中，所述第一资源包括第一时域资源，所述方法包括：所述第一终端设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述第二终端设备发送所述参考信号；所述第二终端设备在由第一时域资源和预定义的频域资源所构成的 时频资源上从所述第一终端设备接收所述参考信号。具体的如图5所示，第一控制信息仅指示发送参考信号的时频资源在时域上为第1个单元至第6个单元(方式a)或者为第1、3、4和6个单元(方式b)，而对于方式a或方式b，发送参考信号的时频资源在频域上为预定义的频域资源，如频域上的第1、3和5个单元都会用于发送参考信号，即图5a或图5b中的阴影部分用于参考信号的发送和接收，发送设备和接收设备可以根据第一控制信息确定出发送参考信号的时域资源，然后根据此时域资源和预定义的频域资源确定出发送参考信号的时频资源，然后在此时频资源上发送或接收参考信号。可选的，所述预定义的频域资源可以为固定的频域资源或可配置的频域资源。可选的，第一控制信息可以指示发送参考信号的具体时域资源。可选的，第一控制信息也可以指示发送参考信号的时域资源为不同的方式，如指示为方式a或方式b，其中方式a为第1个单元至第6个单元，方式b为第1、3、4和6个单元，这些方式a或b可以是固定的，也可以是可配置的。
在可选的实施例中，所述第一资源包括第一频域资源，所述方法包括：所述第一终端设备在由第一频域资源和预定义的时域资源所构成的时频资源上向所述第二终端设备发送所述参考信号；所述第二终端设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述第一终端设备接收所述参考信号。具体的如图6所示，第一控制信息仅指示发送参考信号的时频资源在频域上为第2、4和6个单元(方式a)或者为第1、3和5个单元(方式b)，而发送参考信号的时频资源在时域上为预定义的时域资源，如时域上所有的单元都会用于发送参考信号，即图6a或图6b中的阴影部分用于参考信号的发送和接收，发送设备和接收设备可以根据第一控制信息确定出发送参考信号的频域资源，然后根据此频域资源和预定义的时域资源确定出发送参考信号的时频资源，然后在此时频资源上发送或接收参考信号。可选的，所述预定义的时域资源为固定的时域资源或可配置的时域资源。可选的，第一控制信息可以指示发送参考信号的具体频域资源。可选的，发送参考信号的频域资源可以是预定义方式a为第2、4和6个单元，或方式b为第1、3和5个单元，第一控制信息也可以指示发送参考信号的时域资源为方式a或方式b。
在可选的实施例中，所述第一控制信息包含在侧行控制信息中。
图3b为下行通信的一种参考信号发送、接收方法及系统，具体步骤如下：
步骤31b，接入网设备向终端设备发送第一控制信息，终端设备从接入网设备接收第一控制信息，所述第一控制信息用于指示所述接入网设备发送参考信号的第一资源。
步骤32b，所述接入网设备在所述第一资源上向所述终端设备发送所述参考信号，所述终端设备在所述第一资源上从所述接入网设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述方法包括：所述接入网设备在所述第一时频资源上向所述终端设备发送所述参考信号；所述终端设备在所述第一时频资源上从所述接入网设备接收所述参考信号，具体参见图3a实施例，不再赘述。
在可选的实施例中，所述第一资源包括第一时域资源，所述方法包括：所述接入网设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述终端设备发送所述参考信号；所述终端设备在由第一时域资源和预定义的频域资源所构成的时频资源上从所述接入网设备接收所述参考信号，具体参见图3a实施例，不再赘述。
在可选的实施例中，所述第一资源包括第一频域资源，所述方法包括：所述接入网 设备在由第一频域资源和预定义的时域资源所构成的时频资源上向所述终端设备发送所述参考信号；所述终端设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述接入网设备接收所述参考信号，具体参见图3a实施例，不再赘述。
在可选的实施例中，所述第一控制信息包含在下行控制信息或者RRC信令中。
图3c为上行通信的一种参考信号发送、接收方法及系统，具体步骤如下：
步骤31c，终端设备从接入网设备接收第一控制信息，接入网设备向终端设备发送第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源。
步骤32c，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述方法包括：所述终端设备在所述第一时频资源上向所述接入网设备发送所述参考信号；所述接入网设备在所述第一时频资源上从所述终端设备接收所述参考信号，具体参见图3a实施例，不再赘述。
在可选的实施例中，所述第一资源包括第一时域资源，所述方法包括：所述终端设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述接入网设备发送所述参考信号；所述接入网设备在由第一时域资源和预定义的频域资源所构成的时频资源上从所述终端设备接收所述参考信号，具体参见图3a实施例，不再赘述。
在可选的实施例中，所述第一资源包括第一频域资源，所述方法包括：所述终端设备在由第一频域资源和预定义的时域资源所构成的时频资源上向所述接入网设备发送所述参考信号；所述接入网设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述终端设备接收所述参考信号，具体参见图3a实施例，不再赘述。
在图3a、图3b以及图3c实施例中，可选的，第一控制信息指示的是一个时频资源图样(pattern)。所述第一控制信息包含在侧行控制信息、下行控制信息或者RRC信令中。
在图3a、图3b以及图3c实施例中，可选的，所述第一控制信息可以通过在侧行控制信息、下行控制信息中新增加的域指示，也可以通过侧行控制信息或下行控制信息中已存在的域指示。下面以侧行控制信息为例进行说明，当采用侧行控制信息中已存在的域指示时，一种可能的方式，可以通过对循环冗余校验(Cyclic Redundancy Check，CRC)位使用不同的掩码(mask)进行加扰指示第一控制信息，例如，不同的掩码可以对应于不同的发送参考信号的资源，对于接收侧，可以通过盲检测的方式确定发送侧的掩码，进而可以获取不同掩码对应的发送参考信号的资源。
在图3a、图3b以及图3c实施例中，可选的，对于半持续调度(Semi-Persistent Scheduling，SPS)的数据发送，参考信号也会相应地进行周期性的发送，所述第一控制信息可以指示周期性发送的参考信号的资源。可选的，可以在同一个第一控制信息中对于多个周期性发送的参考信号的资源进行指示，即“集中指示”；也可以在多个第一控制信息中对于多个周期性发送的参考信号的资源分别进行指示，即“分别指示”。
在图3a、图3b以及图3c实施例中，可选的，对于一个数据多次传输的情况，参考信号也会相应地进行多次传输，对于多个参考信号的传输资源，后续参考信号的传输资源或者传输资源图样可以根据先前参考信号的传输资源或者传输资源图样确定，例如与先前参考信号的传输资源或者传输资源图样相同或者相关，或者，后续参考信号的传输资源或者传输资源图样也可以通过第一控制信息指示等。
在图3a、图3b以及图3c实施例中，在可选的实施例中，所述第一终端设备或终端设备向接入网设备发送辅助信息，所述辅助信息包括所述第一终端设备的速度和/或加速度和/或移动方向和/或地理位置和/或信道状况信息等，所述接入网设备根据所述辅助信息确定参考信号的传输资源，所述接入网设备向所述第一终端设备或终端设备发送所述第一控制信息，第一控制信息用于指示发送参考信号的第一资源。可选的，所述第一控制信息包含在接入网设备发给第一终端设备或终端设备的下行控制信息(Downlink Control Information，DCI)或者无线资源控制(Radio Resource Control，RRC)信令中。
在图3a、图3b以及图3c实施例中，可选的，在多个天线端口或多个层用于参考信号传输的情况下，各个天线端口或层上的参考信号传输资源可能是不同的，第一控制信息可以指示多个天线端口或层上的参考信号传输资源。
在图3a、图3b以及图3c实施例中，可选的，所述下行控制信息或侧行控制信息还指示了第二资源，所述第一资源是第二资源的一部分，即所述参考信号的传输资源是第二资源的一部分。所述第二资源为接入网设备向终端设备发送数据的时频资源，或所述第二资源为终端设备向接入网设备发送数据的时频资源，或所述第二资源为第一终端设备向第二终端设备发送数据的时频资源。根据所述第二资源和所述第一控制信息可以确定所述第一资源。例如，所述第一控制信息指示了所述参考信号在时域的第2、4、6个单元传输(如方式a)，则所述时域的第2、4、6个单元为所述第二资源中时域的第2、4、6个单元，发送设备和接收设备在所述第二资源中时域的第2、4、6个单元上发送或接收所述参考信号。又例如，所述第一控制信息指示了参考信号时频资源图样，所述时频资源图样为在一个时频资源范围，如一个资源块(Resource Block，RB)内的参考信号的传输资源位置。所述下行控制信息或侧行控制信息指示了发送数据的资源为5个资源块，则在每个资源块内，都按照第一控制信息指示的参考信号时频资源图样来确定参考信号的传输资源，发送设备和接收设备在所述5个资源块内的参考信号传输资源上发送或接收参考信号。
通过本申请实施例，发送设备向接收设备发送第一控制信息，第一控制信息用于指示发送设备发送或接收参考信号的第一资源(所述发送设备可以为第一终端设备或接入网设备，所述接收设备可以为终端设备或第二终端设备)，所述发送设备和接收设备则在所述第一资源上发送或者接收所述参考信号，由此，参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。
图7示出了用于执行图3a和3b实施例中所涉及方法的第一设备的一种可能的结构示意图，所述第一设备包括发送单元701。所述第一设备可以为第一终端设备或者接入网设备。
发送单元701，用于用于向第二设备发送第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源。
所述发送单元701，还用于在所述第一资源上向所述第二设备发送所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：所述发送单元在所述第一时频 资源上向所述第二设备发送所述参考信号。
在可选的实施例中，所述第一资源包括第一时域资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：所述发送单元在由第一时域资源和预定义的频域资源所构成的时频资源上向所述第二设备发送所述参考信号。
在可选的实施例中，所述第一资源包括第一频域资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：所述发送单元在由第一频域资源和预定义的时域资源所构成的时频资源上向所述第二设备发送所述参考信号。
在可选的实施例中，对于下行通信，所述第一设备包括接入网设备，所述第二设备包括终端设备。可选的，所述第一控制信息包含在下行控制信息中。
在可选的实施例中，对于侧行通信，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。可选的，所述第一控制信息包含在侧行控制信息中。可选的，所述第一设备还包括接收单元，所述第一控制信息为所述接收单元从接入网设备接收的。
在可选的实施例中，所述发送单元701可以为发送器801或收发器。所述第一设备还可以包括处理器802，所述第一设备还可以包括存储器803，所述存储器803用于存储第一设备的程序代码和数据，具体如图8所示。
通过本申请实施例，第一设备向第二设备发送第一控制信息，第一控制信息用于指示第一设备发送或接收参考信号的第一资源(所述第一设备可以为第一终端设备或接入网设备，所述第二设备可以为终端设备或第二终端设备)，所述第一设备和第二设备则在所述第一资源上发送或者接收所述参考信号，由此，参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。
图9示出了用于执行图3a和3b实施例中所涉及方法的第二设备的一种可能的结构示意图，所述第二设备包括接收单元901。所述第二设备可以为第二终端设备或者终端设备。
接收单元901，用于从第一设备接收第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源。
所述接收单元901，还用于在所述第一资源上从所述第一设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：所述接收单元在所述第一时频资源上从所述第一设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时域资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：所述接收单元在由第一时域资源和预定义的频域资源所构成的时频资源上从所述第一设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一频域资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：所述接收单元在由第一频域资源和预定义的时域资源所构成的时频资源上从所述第一设备接收所述参考信号。
在可选的实施例中，所述第一设备包括接入网设备，所述第二设备包括终端设备。可选的，所述第一控制信息包含在下行控制信息中。
在可选的实施例中，所述第一设备包括第一终端设备，所述第二设备包括第二终端 设备。可选的，所述第一控制信息包含在侧行控制信息中。可选的，所述第一控制信息为所述第一终端设备从接入网设备接收的。
在可选的实施例中，所述接收单元901可以为接收器1001或收发器。所述第二设备还可以包括处理器1002，所述第二设备还可以包括存储器1003，所述存储器1003用于存储第一设备的程序代码和数据，具体如图10所示。
通过本申请实施例，第一设备向第二设备发送第一控制信息，第一控制信息用于指示第一设备发送或接收参考信号的第一资源(所述第一设备可以为第一终端设备或接入网设备，所述第二设备可以为终端设备或第二终端设备)，所述第一设备和第二设备则在所述第一资源上发送或者接收所述参考信号，由此，参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。
图11示出了用于执行图3c实施例中所涉及方法的终端设备的一种可能的结构示意图，所述终端设备包括接收单元1101和发送单元1102。
接收单元1101，用于从接入网设备接收第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源.
发送单元1102，用于在所述第一资源上向所述接入网设备发送所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述发送单元1102，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述发送单元1102在所述第一时频资源上向所述接入网设备发送所述参考信号。
在可选的实施例中，所述第一资源包括第一时域资源，所述发送单元1102，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述发送单元1102在由第一时域资源和预定义的频域资源所构成的时频资源上向所述接入网设备发送所述参考信号。
在可选的实施例中，所述第一资源包括第一频域资源，所述发送单元1102，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：所述发送单元1102在由第一频域资源和预定义的时域资源所构成的时频资源上向所述接入网设备发送所述参考信号。
在可选的实施例中，所述第一控制信息包含在下行控制信息中。
在可选的实施例中，所述接收单元1101可以为接收器1201或收发器，所述发送单元1102可以为发送器1202或收发器。所述第一设备还可以包括处理器1203，所述第一设备还可以包括存储器1204，所述存储器1204用于存储所述终端设备的程序代码和数据，具体如图12所示。
通过本申请实施例，接入网设备向终端设备发送第一控制信息，第一控制信息用于指示终端设备发送参考信号的第一资源，所述接入网设备则在所述第一资源上接收所述参考信号，由此，参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。
图13示出了用于执行图3c实施例中所涉及方法的接入网设备的一种可能的结构示意图，所述终端设备包括发送单元1301和接收单元1302。
发送单元1301，用于向终端设备发送第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源。
接收单元1302，用于在所述第一资源上从所述终端设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时频资源，所述接收单元1302，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接收单元1302在所述第一时频资源上从所述终端设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一时域资源，所述接收单元1302，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接收单元1302在由第一时域资源和预定义的频域资源所构成的时频资源上从所述终端设备接收所述参考信号。
在可选的实施例中，所述第一资源包括第一频域资源，所述接收单元1302，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：所述接收单元1302在由第一频域资源和预定义的时域资源所构成的时频资源上从所述终端设备接收所述参考信号。
在可选的实施例中，所述第一控制信息包含在下行控制信息中。
在可选的实施例中，所述接收单元1302可以为接收器1402或收发器，所述发送单元1301可以为发送器1401或收发器。所述第一设备还可以包括处理器1403，所述第一设备还可以包括存储器1404，所述存储器1404用于存储所述终端设备的程序代码和数据，具体如图14所示。
通过本申请实施例，接入网设备向终端设备发送第一控制信息，第一控制信息用于指示终端设备发送参考信号的第一资源，所述接入网设备则在所述第一资源上接收所述参考信号，由此，参考信号的发送资源不再是固定的，可以根据终端设备的速度等因素确定发送资源的数量或位置等，例如速度慢时可以配置较少的资源用于发送参考信号，而且参考信号的发送资源是通过第一控制信息指示的，提高了参考信号发送的灵活性。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
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单元中，也可以是各个单元单独物理存在，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。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现 出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (40)

  1. 一种参考信号发送方法，其特征在于，包括：
    第一设备向第二设备发送第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；
    所述第一设备在所述第一资源上向所述第二设备发送所述参考信号。
  2. 根据权利要求1所述的方法，其特征在于，
    所述第一资源包括第一时频资源，所述第一设备在所述第一资源上向所述第二设备发送所述参考信号，包括：
    所述第一设备在所述第一时频资源上向所述第二设备发送所述参考信号,或，
    所述第一资源包括第一时域资源，所述第一设备在所述第一资源上向所述第二设备发送所述参考信号，包括：
    所述第一设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述第二设备发送所述参考信号；或，
    所述第一资源包括第一频域资源，所述第一设备在所述第一资源上向所述第二设备发送所述参考信号，包括：
    所述第一设备在由第一频域资源和预定义的时域资源所构成的时频资源上向所述第二设备发送所述参考信号。
  3. 根据权利要求1-2任意一项所述的方法，其特征在于，所述第一设备包括接入网设备，所述第二设备包括终端设备。
  4. 根据权利要求3所述的方法，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  5. 根据权利要求1-2任意一项所述的方法，其特征在于，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
  6. 根据权利要求5所述的方法，其特征在于，
    所述第一控制信息包含在侧行控制信息中。
  7. 根据权利要求5-6任意一项所述的方法，其特征在于，
    所述第一控制信息为所述第一终端设备从接入网设备接收的。
  8. 一种参考信号接收方法，其特征在于，包括：
    第二设备从第一设备接收第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；
    所述第二设备在所述第一资源上从所述第一设备接收所述参考信号。
  9. 根据权利要求8所述的方法，其特征在于，
    所述第一资源包括第一时频资源，所述第二设备在所述第一资源上从所述第一设备接收所述参考信号，包括：
    所述第二设备在所述第一时频资源上从所述第一设备接收所述参考信号,或
    所述第一资源包括第一时域资源，所述第二设备在所述第一资源上从所述第一设备接收所述参考信号，包括：
    所述第二设备在由第一时域资源和预定义的频域资源所构成的时频资源上从所述第一设备接收所述参考信号；或，
    所述第一资源包括第一频域资源，所述第二设备在所述第一资源上从所述第一设备接收所述参考信号，包括：
    所述第二设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述第一设备接收所述参考信号。
  10. 根据权利要求8-9任意一项所述的方法，其特征在于，所述第一设备包括接入网设备，所述第二设备包括终端设备。
  11. 根据权利要求10所述的方法，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  12. 根据权利要求8-9任意一项所述的方法，其特征在于，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
  13. 根据权利要求12所述的方法，其特征在于，
    所述第一控制信息包含在侧行控制信息中。
  14. 根据权利要求12-13任意一项所述的方法，其特征在于，
    所述第一控制信息为所述第一终端设备从接入网设备接收的。
  15. 一种第一设备，其特征在于，包括：
    发送单元，用于向第二设备发送第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；
    所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号。
  16. 根据权利要求15所述的第一设备，其特征在于，
    所述第一资源包括第一时频资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：
    所述发送单元在所述第一时频资源上向所述第二设备发送所述参考信号；或，
    所述第一资源包括第一时域资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：
    所述发送单元在由第一时域资源和预定义的频域资源所构成的时频资源上向所述第二设备发送所述参考信号；或，
    所述第一资源包括第一频域资源，所述发送单元，还用于在所述第一资源上向所述第二设备发送所述参考信号，包括：
    所述发送单元在由第一频域资源和预定义的时域资源所构成的时频资源上向所述第二设备发送所述参考信号。
  17. 根据权利要求15-16任意一项所述的第一设备，其特征在于，所述第一设备包括接入网设备，所述第二设备包括终端设备。
  18. 根据权利要求17所述的第一设备，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  19. 根据权利要求15-16任意一项所述的第一设备，其特征在于，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
  20. 根据权利要求19所述的第一设备，其特征在于，
    所述第一控制信息包含在侧行控制信息中。
  21. 根据权利要求19-20任意一项所述的第一设备，其特征在于，所述第一设备还包括接收单元，所述第一控制信息为所述接收单元从接入网设备接收的。
  22. 一种第二设备，其特征在于，包括：
    接收单元，用于从第一设备接收第一控制信息，所述第一控制信息用于指示所述第一设备发送参考信号的第一资源；
    所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号。
  23. 根据权利要求22所述的第二设备，其特征在于，
    所述第一资源包括第一时频资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：
    所述接收单元在所述第一时频资源上从所述第一设备接收所述参考信号；或，
    所述第一资源包括第一时域资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：
    所述接收单元在由第一时域资源和预定义的频域资源所构成的时频资源上从所述第一设备接收所述参考信号；或，
    所述第一资源包括第一频域资源，所述接收单元，还用于在所述第一资源上从所述第一设备接收所述参考信号，包括：
    所述接收单元在由第一频域资源和预定义的时域资源所构成的时频资源上从所述第一设备接收所述参考信号。
  24. 根据权利要求22-23任意一项所述的第二设备，其特征在于，所述第一设备包括接入网设备，所述第二设备包括终端设备。
  25. 根据权利要求24所述的第二设备，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  26. 根据权利要求22-23任意一项所述的第二设备，其特征在于，所述第一设备包括第一终端设备，所述第二设备包括第二终端设备。
  27. 根据权利要求26所述的第二设备，其特征在于，
    所述第一控制信息包含在侧行控制信息中。
  28. 根据权利要求26-27任意一项所述的第二设备，其特征在于，
    所述第一控制信息为所述第一终端设备从接入网设备接收的。
  29. 一种参考信号发送方法，其特征在于，包括：
    终端设备从接入网设备接收第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；
    所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号。
  30. 根据权利要求29所述的方法，其特征在于，
    所述第一资源包括第一时频资源，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，包括：
    所述终端设备在所述第一时频资源上向所述接入网设备发送所述参考信号；或，
    所述第一资源包括第一时域资源，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，包括：
    所述终端设备在由第一时域资源和预定义的频域资源所构成的时频资源上向所述接入网设备发送所述参考信号；或，
    所述第一资源包括第一频域资源，所述终端设备在所述第一资源上向所述接入网设备发送所述参考信号，包括：
    所述终端设备在由第一频域资源和预定义的时域资源所构成的时频资源上向所述接入网设备发送所述参考信号。
  31. 根据权利要求29-30任意一项所述的方法，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  32. 一种参考信号接收方法，其特征在于，包括：
    接入网设备向终端设备发送第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；
    所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号。
  33. 根据权利要求32所述的方法，其特征在于，
    所述第一资源包括第一时频资源，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号，包括：
    所述接入网设备在所述第一时频资源上从所述终端设备接收所述参考信号；或，
    所述第一资源包括第一时域资源，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号，包括：
    所述接入网设备在由第一时域资源和预定义的频域资源所构成的时频资源上从所述终端设备接收所述参考信号；或，
    所述第一资源包括第一频域资源，所述接入网设备在所述第一资源上从所述终端设备接收所述参考信号，包括：
    所述接入网设备在由第一频域资源和预定义的时域资源所构成的时频资源上从所述终端设备接收所述参考信号。
  34. 根据权利要求32-33任意一项所述的方法，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  35. 一种终端设备，其特征在于，包括：
    接收单元，用于从接入网设备接收第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；
    发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号。
  36. 根据权利要求35所述的终端设备，其特征在于，
    所述第一资源包括第一时频资源，所述发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：
    所述发送单元在所述第一时频资源上向所述接入网设备发送所述参考信号；或，
    所述第一资源包括第一时域资源，所述发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：
    所述发送单元在由第一时域资源和预定义的频域资源所构成的时频资源上向所述接入网设备发送所述参考信号；或，
    所述第一资源包括第一频域资源，所述发送单元，用于在所述第一资源上向所述接入网设备发送所述参考信号，包括：
    所述发送单元在由第一频域资源和预定义的时域资源所构成的时频资源上向所述接入网设备发送所述参考信号。
  37. 根据权利要求35-36任意一项所述的终端设备，其特征在于，
    所述第一控制信息包含在下行控制信息中。
  38. 一种接入网设备，其特征在于，包括：
    发送单元，用于向终端设备发送第一控制信息，所述第一控制信息用于指示所述终端设备发送参考信号的第一资源；
    接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号。
  39. 根据权利要求38所述的接入网设备，其特征在于，
    所述第一资源包括第一时频资源，所述接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：
    所述接收单元在所述第一时频资源上从所述终端设备接收所述参考信号；或，
    所述第一资源包括第一时域资源，所述接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：
    所述接收单元在由第一时域资源和预定义的频域资源所构成的时频资源上从所述终端设备接收所述参考信号；或，
    所述第一资源包括第一频域资源，所述接收单元，用于在所述第一资源上从所述终端设备接收所述参考信号，包括：
    所述接收单元在由第一频域资源和预定义的时域资源所构成的时频资源上从所述终端设备接收所述参考信号。
  40. 根据权利要求38-39任意一项所述的接入网设备，其特征在于，
    所述第一控制信息包含在下行控制信息中。
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