WO2017201885A1 - 信令发送方法、参考信号发送方法、装置及系统 - Google Patents

信令发送方法、参考信号发送方法、装置及系统 Download PDF

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Publication number
WO2017201885A1
WO2017201885A1 PCT/CN2016/094360 CN2016094360W WO2017201885A1 WO 2017201885 A1 WO2017201885 A1 WO 2017201885A1 CN 2016094360 W CN2016094360 W CN 2016094360W WO 2017201885 A1 WO2017201885 A1 WO 2017201885A1
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Prior art keywords
signal
frequency segment
terminal device
access network
network device
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PCT/CN2016/094360
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English (en)
French (fr)
Inventor
周珏嘉
洪伟
张明
Original Assignee
北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to KR1020167028041A priority Critical patent/KR20180115818A/ko
Priority to JP2016561812A priority patent/JP2018523319A/ja
Publication of WO2017201885A1 publication Critical patent/WO2017201885A1/zh
Priority to US16/198,074 priority patent/US11258567B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0069—Allocation based on distance or geographical location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a signaling sending method, a reference signal transmitting method, an apparatus, and a system.
  • a Reference Signal is a signal that is provided by the transmitting end to the receiving end for channel estimation or channel sounding.
  • a downlink reference signal is sent by an evolved base station (eNB or an e-NodeB) within a service range, and is located in a user equipment (User Equipment, The UE performs measurement on the downlink reference signal, and performs a random access procedure or a data transceiving process according to the measurement result.
  • eNB evolved base station
  • e-NodeB user equipment
  • the UE performs measurement on the downlink reference signal, and performs a random access procedure or a data transceiving process according to the measurement result.
  • the present disclosure provides a signaling transmission method, a reference signal transmission method, apparatus, and system.
  • the technical solution is as follows:
  • a signaling method comprising:
  • the first access network device detects whether the communication of the terminal device in the first frequency segment meets a predetermined condition
  • the first access network device sends predetermined signaling to the terminal device, where the predetermined signaling is used to instruct the terminal device to send the reference signal in the second frequency segment;
  • first frequency segment is different from the second frequency segment.
  • the predetermined condition includes at least one of the following conditions:
  • the signal strength of the first signal is greater than a preset intensity
  • the received power of the first signal is greater than a preset power
  • the receiving quality of the first signal is greater than a preset quality
  • the error rate of the first signal is lower than a preset value
  • the first signal is a signal sent by the terminal device in the first frequency segment.
  • the predetermined conditions include:
  • the distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold
  • the first geographical location when the terminal device communicates using the first frequency segment belongs to a predetermined area, and the predetermined area is an area determined based on the predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency segment.
  • the predetermined conditions include:
  • the number of antennas of the multiple input multiple output MIMO antenna used when receiving the first signal exceeds a preset number
  • the antenna position of the MIMO antenna used when receiving the first signal conforms to a preset position
  • the number of antennas of the MIMO antenna used when receiving the first signal exceeds a preset number, and the antenna position conforms to the preset position;
  • the first signal is a signal transmitted by the terminal device in the first frequency segment, and the antenna position refers to the position of the used MIMO antenna relative to the MIMO antenna array.
  • the predetermined conditions include:
  • the signal parameter of the signal sent by the terminal device in the first frequency segment received by the second access network device meets the first condition
  • the signal parameter of the signal sent by the terminal device in the first frequency segment that is received by the second access network device meets the second condition, and the signal parameter of the signal sent by the terminal device in the first frequency segment received by the first access network device Meet the third condition;
  • the signal parameters include at least one of signal strength, signal power, signal quality, and signal error rate.
  • the predetermined conditions include:
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and the signal receiving strength of the second positioning signal received by the first access network device is lower than the second strength;
  • the difference between the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the first access network device is less than a preset difference
  • the first positioning signal is a positioning signal that is received by the terminal when communicating using the first frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • the reference signal comprises at least one of the following reference signals:
  • a specific reference signal for the terminal device a demodulation reference signal DMRS, a sounding reference signal SRS, and a channel state information reference signal CSI-RS.
  • a reference signal transmitting method comprising:
  • the terminal device communicates with the access network device in the first frequency segment
  • the terminal device transmits the reference signal in the second frequency segment
  • first frequency segment is different from the second frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • the reference signal comprises at least one of the following reference signals:
  • a specific reference signal for the terminal device a demodulation reference signal DMRS, a sounding reference signal SRS, and a channel state information reference signal CSI-RS.
  • a reference signal transmitting method comprising:
  • the terminal device communicates with the first access network device in the first frequency segment
  • the terminal device detects whether the communication in the first frequency segment satisfies a predetermined condition
  • the terminal device transmits the reference signal in the second frequency segment when the communication of the first frequency segment satisfies a predetermined condition
  • first frequency segment is different from the second frequency segment.
  • the predetermined condition includes at least one of the following conditions:
  • the signal strength of the second signal is greater than a preset intensity
  • the received power of the second signal is greater than the preset power
  • the receiving quality of the second signal is greater than the preset quality
  • the error rate of the second signal is lower than a preset value
  • the second signal is a signal sent by the first access network device in the first frequency segment.
  • the predetermined conditions include:
  • the distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold
  • the first geographical location when the terminal device communicates using the first frequency segment belongs to a predetermined area, and the predetermined area is an area determined based on the predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency end.
  • the predetermined conditions include:
  • the number of antennas of the multiple input multiple output MIMO antenna used by the terminal device when transmitting signals in the first frequency segment exceeds a preset number
  • the antenna position of the MIMO antenna used by the terminal device when transmitting the signal in the first frequency segment meets the preset position
  • the number of antennas of the MIMO antenna used by the terminal device to transmit signals in the first frequency segment exceeds a preset number, And the antenna position conforms to the preset position;
  • the antenna position refers to the position of the MIMO antenna used relative to the MIMO antenna array.
  • the predetermined conditions include:
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and the signal receiving strength of the second positioning signal received by the first access network device is lower than the second strength;
  • the difference between the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the first access network device is less than a preset difference
  • the first positioning signal is a positioning signal that is received by the terminal device when communicating using the first frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • a signaling transmitting apparatus comprising:
  • a processing module configured to detect whether the communication of the terminal device in the first frequency segment meets a predetermined condition
  • a sending module configured to: when the communication of the first frequency segment meets a predetermined condition, send predetermined signaling to the terminal device, where the predetermined signaling is used to instruct the terminal device to send the reference signal in the second frequency segment;
  • first frequency segment is different from the second frequency segment.
  • the predetermined condition includes at least one of the following conditions:
  • the signal strength of the first signal is greater than a preset intensity
  • the received power of the first signal is greater than a preset power
  • the receiving quality of the first signal is greater than the preset quality
  • the error rate of the first signal is lower than a preset value
  • the first signal is a signal sent by the terminal device in the first frequency segment.
  • the predetermined conditions include:
  • the distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold
  • the first geographical location when the terminal device communicates using the first frequency segment belongs to a predetermined area, and the predetermined area is an area determined based on the predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency segment.
  • the predetermined conditions include:
  • the number of antennas of the multiple input multiple output MIMO antenna used when receiving the first signal exceeds a preset number
  • the antenna position of the MIMO antenna used when receiving the first signal conforms to a preset position
  • the number of antennas of the MIMO antenna used when receiving the first signal exceeds a preset number, and the antenna position conforms to the preset position;
  • the first signal is a signal transmitted by the terminal device in the first frequency segment, and the antenna position refers to the position of the used MIMO antenna relative to the MIMO antenna array.
  • the predetermined conditions include:
  • the signal parameter of the signal sent by the terminal device in the first frequency segment received by the second access network device meets the first condition
  • the signal parameter of the signal sent by the terminal device in the first frequency segment received by the second access network device meets the second condition, and the signal parameter of the signal sent by the terminal device in the first frequency segment received by the signaling device meets the Three conditions
  • the signal parameters include at least one of signal strength, signal power, signal quality, and signal error rate.
  • the predetermined conditions include:
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and the signal receiving strength of the second positioning signal received by the signaling device is lower than the second strength;
  • the difference between the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the signaling device is less than a preset difference
  • the first positioning signal is a positioning signal that is received by the terminal when communicating using the first frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • the reference signal comprises at least one of the following reference signals:
  • a specific reference signal for the terminal device a demodulation reference signal DMRS, a sounding reference signal SRS, and a channel state information reference signal CSI-RS.
  • a reference signal transmitting apparatus comprising:
  • a processing module configured to communicate with the access network device in a first frequency segment
  • the receiving module is configured to receive a predetermined instruction sent by the access network device, where the predetermined instruction is sent by the access network device when the communication of the first frequency segment meets a preset condition;
  • a sending module configured to send a reference signal in the second frequency segment
  • first frequency segment is different from the second frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • the reference signal comprises at least one of the following reference signals:
  • a specific reference signal for the terminal device a demodulation reference signal DMRS, a sounding reference signal SRS, and a channel state information reference signal CSI-RS.
  • a reference signal transmitting apparatus comprising:
  • a processing module configured to communicate with the first access network device in a first frequency segment
  • a processing module configured to detect whether communication in the first frequency segment satisfies a predetermined condition
  • a sending module configured to send a reference signal in the second frequency segment when the communication of the first frequency segment satisfies a predetermined condition
  • first frequency segment is different from the second frequency segment.
  • the predetermined condition includes at least one of the following conditions:
  • the signal strength of the second signal is greater than a preset intensity
  • the received power of the second signal is greater than the preset power
  • the receiving quality of the second signal is greater than the preset quality
  • the error rate of the second signal is lower than a preset value
  • the second signal is a signal sent by the first access network device in the first frequency segment.
  • the predetermined conditions include:
  • the distance between the first geographic location when the reference signal transmitting device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold
  • the first geographic location when the reference signal transmitting device communicates using the first frequency segment belongs to a predetermined region, and the predetermined region is based on the region determined by the predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency end.
  • the predetermined conditions include:
  • the number of antennas of the multiple input multiple output MIMO antenna used by the reference signal transmitting device when transmitting the signal in the first frequency segment exceeds a preset number
  • the antenna position of the MIMO antenna used by the reference signal transmitting device when transmitting the signal in the first frequency segment conforms to the preset position
  • the number of antennas of the MIMO antenna used by the reference signal transmitting device when transmitting the signal in the first frequency segment exceeds a preset number, and the antenna position conforms to the preset position;
  • the antenna position refers to the position of the MIMO antenna used relative to the MIMO antenna array.
  • the predetermined conditions include:
  • the signal receiving strength of the first positioning signal received by the reference signal transmitting device is lower than the first intensity
  • the signal receiving strength of the first positioning signal received by the reference signal transmitting device is lower than the first strength, and the signal receiving strength of the second positioning signal received by the first access network device is lower than the second strength;
  • the difference between the signal receiving strength of the first positioning signal received by the reference signal transmitting device and the signal receiving strength of the second positioning signal received by the first access network device is less than a preset difference
  • the first positioning signal is a positioning signal that is received by the reference signal transmitting device when communicating using the first frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • an access network device comprising:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the predetermined signaling is sent to the terminal device, where the predetermined signaling is used to instruct the terminal device to send the reference signal in the second frequency segment;
  • first frequency segment is different from the second frequency segment.
  • a terminal device comprising:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • first frequency segment is different from the second frequency segment.
  • a terminal device comprising:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • first frequency segment is different from the second frequency segment.
  • a mobile communication system comprising: an access network Equipment and terminal equipment;
  • the access network device includes the apparatus as described in the fourth aspect and any alternative embodiment
  • the terminal device comprises the device as described in the fifth aspect and any alternative embodiment.
  • a mobile communication system comprising: an access network device and a terminal device;
  • the terminal device comprises the device as described in the sixth aspect and any alternative embodiment.
  • a mobile communication system comprising: an access network device and a terminal device;
  • the access network device is the access network device as described in the seventh aspect
  • the terminal device is the terminal device as described in the eighth aspect.
  • a mobile communication system comprising: an access network device and a terminal device;
  • the terminal device is the terminal device as described in the ninth aspect.
  • the terminal device When the communication between the terminal device and the access network device in the first frequency segment meets the preset condition, the terminal device sends the reference signal in the second frequency segment; and the access network device sends the reference signal when the networking environment is relatively complicated.
  • the problem of inefficiency is achieved; not only can the reference signal be transmitted by the terminal device, but also the reference signal can be selectively transmitted in the second frequency segment depending on the specific communication condition of the first frequency segment, thereby improving the efficiency of transmitting the reference signal by the terminal device.
  • the effect of the power consumption required by the terminal device when transmitting the reference signal in the second frequency segment is reduced.
  • FIG. 1 is a schematic structural diagram of a mobile communication system according to an exemplary embodiment
  • FIG. 2 is a schematic structural diagram of an access network device according to an exemplary embodiment
  • FIG. 3 is a schematic structural diagram of a terminal device according to an exemplary embodiment
  • FIG. 4 is a schematic diagram showing division of a first frequency segment and a second frequency segment according to an exemplary embodiment
  • FIG. 5 is a flowchart of a reference signal transmitting method provided by an exemplary embodiment
  • FIG. 6 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 7A is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 7B is a schematic diagram showing a method for transmitting a reference signal provided by the embodiment shown in FIG. 7A in a specific implementation
  • FIG. 7C is a schematic diagram showing a reference signal transmitting method provided by the embodiment shown in FIG. 7A in another specific implementation
  • FIG. 8 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 9A is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment.
  • FIG. 9B is a schematic diagram showing a method for transmitting a reference signal provided by the embodiment shown in FIG. 9A in a specific implementation
  • FIG. 10 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 11 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 12 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 13 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 14 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • FIG. 15 is a flowchart showing a reference signal transmitting method provided by another exemplary embodiment
  • Figure 16 is a block diagram showing a reference signal transmitting apparatus provided by an exemplary embodiment
  • Figure 17 is a block diagram showing a reference signal transmitting apparatus provided by an exemplary embodiment
  • Figure 18 is a block diagram showing a reference signal transmitting apparatus provided by an exemplary embodiment.
  • a “unit” as referred to herein refers to a program or instruction stored in a memory that is capable of implementing certain functions;
  • module as referred to herein refers to a functional structure that is logically divided, the “module” may be Pure hardware implementation, or a combination of hardware and software.
  • Multiple as referred to herein means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the symbol “/” generally indicates that the contextual object is an "or" relationship.
  • a wireless communication service is generally provided to a UE by an access network device in units of cells, and the UE resides in a certain cell and uses wireless communication. service.
  • an access network device is generally referred to as an eNB.
  • the eNB and the supporting equipment include, but are not limited to, a macro base station, a micro base station, a repeater station, and the like.
  • the macro base station is usually an iron tower station, and each macro base station can cover a range of several tens of kilometers.
  • the micro base station is a small base station installed in a building, in a dense area or indoors, and has a small coverage area, and is mainly disposed in a range that is not covered by the macro base station.
  • the repeater is a kind of signal repeater.
  • the RF signal sent by the base station is amplified according to the need, and the capacity cannot be provided by itself.
  • the application environment mainly includes areas with poor coverage and relatively small capacity requirements.
  • a Radio Access Network consisting of eNBs in the form of macro base stations, micro base stations, and repeaters is no longer a typical and regular cellular network.
  • the traditional eNB sends the parameters
  • the mechanism for measuring the signal and performing network measurement by the UE is changed to a mechanism in which the UE transmits a reference signal and the network measurement is performed by the eNB.
  • the UE is regarded as similar to a "mobile base station", and the UE actively transmits various reference signals for the eNB to perform network measurement.
  • the 5G system such as the 4G system.
  • Supported 2GHZ band also supports high frequency bands above 6GHZ, such as 20GHZ+ band. Since the propagation characteristics of the low frequency band and the high frequency band are very different, the wireless signal transmitted by the high frequency band is quickly attenuated.
  • the battery powered terminal device transmits the reference signal in the form of "high frequency band + low frequency band"
  • the transmission efficiency of the reference signal is extremely low, and uplink interference is easily formed between the respective terminal devices, and the battery power of the terminal device is also quickly exhausted.
  • uplink the direction in which a UE transmits a signal to an eNB
  • downstream the direction in which an eNB transmits a signal to a UE is referred to as "downstream.”
  • FIG. 1 is a block diagram showing the structure of a mobile communication system provided by an exemplary embodiment.
  • the mobile communication system includes an access network device 120 and a terminal device 140.
  • the access network device 120 has a function of transmitting a downlink reference signal, receiving an uplink reference signal, transmitting downlink data or an instruction, and receiving uplink data or an instruction.
  • access network devices 120 have the same or similar functionality, but may have different names or specific implementations.
  • the access network device 120 is a Global System for Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA).
  • the access network device is a base station (NodeB) in a Universal Mobile Telecommunications System (UMTS).
  • the access network device is an evolved base station (eNB or e-NodeB) in Long Term Evolution (LTE).
  • the specific implementation form of the access network device 120 may be a macro base station, a micro base station, a pico base station, a repeater, and the like.
  • the specific number and specific location of the access network device 120 are not limited in the embodiment of the present disclosure.
  • the terminal device 140 has a function of transmitting an uplink reference signal, receiving a downlink reference signal, transmitting uplink data or an instruction, and receiving downlink data or an instruction.
  • the terminal devices 140 have the same or similar functions, but may have different names or specific implementations.
  • the terminal device 140 may be a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, and an Access Point. , Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment (UE).
  • the specific implementation form of the terminal device 140 may be a mobile phone, a tablet computer, a smart home appliance, a smart device, an Internet of Things device, a car network device, or the like.
  • the specific number and specific location of the terminal device 140 are not limited in the embodiment of the present disclosure.
  • the terminal device 140 will reside in a cell provided by a certain access network device 120.
  • the terminal device 140 communicates with the access network device 120.
  • the communication may refer to a single communication, and also It can be the communication between the two parties.
  • the terminal device 140 sends an uplink reference signal to the access network device 120, and the terminal device 140 considers that the terminal device 140 communicates with the access network device 120, regardless of whether the access network device 120 receives the uplink reference signal and responds;
  • the access network device 120 sends the downlink reference signal to the terminal device 140.
  • the terminal device 140 is considered to be in communication with the access network device 120 regardless of whether the terminal device 140 receives the downlink reference signal and responds.
  • the terminal device 140 transmits the uplink data to the access network device 120 according to the scheduling of the access network device 120 and is successfully received. It is also considered that the terminal device 140 communicates with the access network device 120.
  • the access network device 120 and the terminal device 140 communicate via a wireless carrier.
  • the wireless carrier corresponds to multiple frequency bands.
  • the wireless carrier corresponds to a low frequency band and at least one high frequency band.
  • the low frequency band is a frequency band lower than 6 GHz
  • the high frequency band is a frequency band higher than 6 GHz, for example, a 10 GHz band, a 20 GHz band, and the like.
  • the wireless carrier in the high frequency band has a fast decay speed when transmitting. That is, when the signal of the same energy is transmitted in the low frequency band, the distance that can be transmitted is long; when it is transmitted in the high frequency band, the distance that can be transmitted is short.
  • Each access network device 120 supports communication for at least one frequency band.
  • the macro base station supports communication of all available frequency bands
  • the first micro base station supports communication of the low frequency band and one high frequency band at the same time
  • the second micro base station only supports communication of one high frequency band.
  • FIG. 2 shows a schematic structural diagram of an access network device 120 provided by an exemplary embodiment.
  • the access network device 120 includes a processor 21, a memory 22, a transmitter 23, and a receiver 24.
  • the processor 21 is connected to the memory 22.
  • the processor 21 includes one or more processing cores, and the processor 21 executes various functional applications and information processing by running software programs and units.
  • Memory 22 can be used to store software programs as well as units.
  • the memory 22 can store the operating system 24, the application unit 25 required for at least one function.
  • the application unit 25 may include a processing unit and a transmitting unit. a processing unit configured to detect whether the communication of the terminal device in the first frequency segment satisfies a predetermined condition; and the transmitting unit configured to send the predetermined signaling to the terminal device when the communication of the first frequency segment satisfies a predetermined condition, the predetermined signaling And configured to instruct the terminal device to transmit the reference signal in the second frequency segment; wherein the first frequency segment is different from the second frequency segment.
  • memory 22 can be implemented by any type of volatile or non-volatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable In addition to Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • the transmitter 23 includes a modem unit and a multiple input multiple output (MIMO) antenna, and the MIMO antenna is an antenna that supports multi-antenna port transceiving.
  • the MIMO antenna comprises at least two transmit antennas.
  • the transmitter 23 is configured to implement modulation and demodulation and transmission of the reference signal.
  • Receiver 26 includes the same or similar structure as transmitter 23.
  • the receiver 26 includes a modem unit and a MIMO antenna, and the MIMO antenna includes at least two receive antennas.
  • the structure of the access network device 120 shown in FIG. 2 does not constitute a limitation on the access network device 120, and may include more or less components or combinations of certain components than illustrated. , or different parts layout.
  • FIG. 3 shows a schematic structural diagram of a terminal device 140 provided by an exemplary embodiment.
  • the terminal device 140 includes a processor 31, a memory 32, a receiver 33, and a transmitter 34.
  • the processor 31 is connected to the memory 32.
  • the processor 31 includes one or more processing cores, and the processor 31 executes various functional applications and information processing by running software programs and units.
  • Memory 32 can be used to store software programs as well as units.
  • the memory 32 may also store an operating system 35, an application unit 36 required for at least one function.
  • Application unit 36 may include a processing unit, a receiving unit, and a transmitting unit.
  • the processing unit is configured to communicate with the access network device in the first frequency segment;
  • the receiving unit is configured to receive the predetermined instruction sent by the access network device, where the predetermined instruction is that the communication of the access network device in the first frequency segment is satisfied Transmitted by the preset condition;
  • the transmitting unit is configured to transmit the reference signal in the second frequency segment; wherein the first frequency segment is different from the second frequency segment.
  • the application unit 36 may comprise a processing unit configured to communicate with the first access network device in a first frequency segment; the processing unit configured to detect whether the communication in the first frequency segment satisfies a predetermined condition; the transmitting unit And configured to transmit the reference signal in the second frequency segment when the communication of the first frequency segment satisfies the predetermined condition; wherein the first frequency segment is different from the second frequency segment.
  • memory 32 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable In addition to Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk
  • Optical Disk Optical Disk
  • the receiver 33 includes a modem unit and a MIMO antenna, and the MIMO antenna is an antenna that supports multi-antenna port transceiving.
  • the MIMO antenna comprises at least two receive antennas.
  • the receiver 33 is configured to implement modulation and demodulation and reception of the reference signal.
  • Transmitter 36 includes the same or similar structure as receiver 33.
  • the transmitter 36 comprises a modem unit and a MIMO antenna, optionally the MIMO antenna comprises at least two transmit antennas.
  • the structure of the terminal device 140 shown in FIG. 3 does not constitute a limitation of the pair of terminal devices 140, and may include more or less components or some components in combination, or different. Parts layout.
  • FIG. 4 shows a schematic diagram of partitioning of a first frequency segment and a second frequency segment provided by an exemplary embodiment.
  • the first frequency segment 42 involved in the embodiment of the present disclosure belongs to a low frequency band
  • the second frequency segment 44 belongs to a high frequency band
  • the second frequency segment 44 may have more than one.
  • the plurality of second frequency segments 44 may be adjacent in the frequency domain, or there may be two second frequency segments 44 that are spaced apart from each other in the frequency domain, or The two second frequency segments 44 are spaced apart from each other in the frequency domain, and there are no other second frequency segments between the two second frequency segments 44.
  • the frequency segments may also be referred to as frequency bands in different embodiments.
  • Each frequency segment can have the same frequency bandwidth, such as 15KHZ, 30kHZ, 60kHZ, and the like.
  • the embodiment of the present disclosure does not limit the bandwidth of each frequency segment, and is determined according to a specific embodiment.
  • the embodiment of the present disclosure exemplifies that the first frequency segment belongs to the low frequency band and the second frequency segment belongs to the high frequency band, it is not limited thereto. In some optional embodiments, the first frequency segment belongs to a high frequency band and the second frequency segment belongs to a low frequency band.
  • FIG. 5 shows a flow chart of a reference signal transmitting method provided by an exemplary embodiment.
  • the embodiment of the present disclosure is exemplified by the reference signal transmitting method applied to the mobile communication system shown in FIG. 1.
  • the reference signal sending method includes:
  • step 501 the terminal device communicates with the access network device in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • Communication includes at least one of the following situations: the terminal device transmits a signal to the access network device; the access network device transmits a signal to the terminal device; the terminal device transmits a first signal to the access network device, and the access network device is based on the first The signal feeds back the second signal to the terminal device; the access network device sends a third signal to the terminal device, and the terminal device feeds back the fourth signal or the like to the terminal device based on the third signal.
  • the signal is a reference signal or data, etc., and the embodiment of the present disclosure does not specifically define the type or specific content of the signal.
  • step 502 the access network device detects whether the communication of the terminal device in the first frequency segment satisfies a predetermined condition
  • the predetermined condition is a condition for judging the communication state between the terminal device and the access network device.
  • the first frequency segment belongs to the low frequency band and the second frequency segment belongs to the high frequency band
  • the communication state of the first frequency segment is better than the predetermined condition, the communication of the terminal device in the second frequency segment is triggered.
  • step 503 the access network device sends a predetermined instruction to the terminal device when the communication of the first frequency segment satisfies the predetermined condition
  • the predetermined instruction is used to instruct the terminal device to transmit the reference signal in the second frequency segment.
  • the predetermined instruction is sent by using dedicated signaling; optionally, the predetermined instruction is sent by using a predetermined bit in the existing signaling; optionally, the predetermined instruction adopts certain specific attributes of the existing signaling.
  • the access network device schedules time-frequency resources belonging to the second frequency segment to the terminal device, thereby implicitly indicating that the terminal device transmits the reference signal in the second frequency segment.
  • Existing signaling refers to signaling that already exists in 2G/3G/4G systems.
  • step 504 the terminal device receives a predetermined instruction sent by the access network device, where the predetermined instruction is sent by the access network device when the communication of the first frequency segment meets a preset condition;
  • step 505 the terminal device transmits a reference signal in the second frequency segment.
  • the type of the uplink reference signal sent by the terminal device is not limited to a Demodulation Reference Signal (DMRS), and a Sounding Reference Signal (Sounding Reference Signal, The SRS) and the CSI Reference Signal (CSI-RS) may also actively transmit the newly added uplink reference signals by the terminal device, and the newly added uplink reference signals have the same as some downlink reference signals in the LTE or Similar features.
  • the terminal device is regarded as a “mobile base station”, and the terminal device transmits a cell-specific reference signal (CRS). Therefore, the uplink reference signal in the embodiment of the present disclosure refers to any possible reference signal sent by the terminal device, and these reference signals may be used for channel estimation or channel state measurement and the like.
  • the access network device receives the reference signal sent by the terminal device in the second frequency segment, and performs channel estimation or channel state information measurement on the channel in the second frequency segment according to the reference signal.
  • the reference signal sending method provided in this embodiment is that when the communication between the terminal device and the access network device in the first frequency segment meets the preset condition, the terminal device sends the reference signal in the second frequency segment;
  • the access network device transmits the reference signal with low efficiency; the reference signal can be transmitted not only by the terminal device but also according to the specific communication situation of the first frequency segment, optionally in the second
  • the frequency segment transmits the reference signal, which improves the efficiency of the terminal device transmitting the reference signal, and reduces the effect of the power consumption required by the terminal device when transmitting the reference signal in the second frequency segment.
  • communicating in the first frequency segment may be considered to use time-frequency resources belonging to the first frequency segment for communication; alternatively, “transmitting the reference signal in the second frequency segment” may be considered The time-frequency resources belonging to the second frequency segment are used for communication.
  • the time domain resource is a symbol, a symbol group, a slot, or a subframe, where the symbol is a symbol of an LTE system in which the frequency domain of the subcarrier is 15 kHz.
  • the symbol is a symbol of a communication system in which the frequency domain of one subcarrier is greater than 15 kHz;
  • the time slot is a time slot of an LTE system in which the frequency domain of one subcarrier is 15 kHz, or a frequency domain in which one subcarrier is located is greater than
  • the time slot of a 15 kHz communication system may be less than 0.5 ms in length;
  • the subframe is a subframe of an LTE system in which the subcarrier is located in the frequency domain of 15 kHz, or a subframe of a communication system in which the frequency domain of one subcarrier is greater than 15 kHz.
  • the length may be less than 1 ms, which is not limited in this embodiment.
  • the frequency domain in which the frequency domain of one subcarrier is greater than 15 kHz may be 30 kHz, 60 kHz, and 120 kHz, which is not limited in this embodiment.
  • the frequency domain resource is a short physical resource block (SPRB), a short physical resource block group (SRBG), a short virtual resource block (SVRB), and a short virtual resource block (SVRB).
  • SPRB and SVRB are the basic units for resource allocation of different meanings.
  • the SPRB is 12 consecutive subcarriers in the frequency domain. In the time domain, it is a resource with a transmission time length. The transmission time length can be from 1 symbol to any number of symbols in 14 symbols.
  • SVRB and SPRB In the centralized resource allocation, SVRB and SPRB. The definition is the same.
  • SVRB has a certain correspondence with SPRB in distributed resource allocation.
  • the SPRB index is an SPRB index
  • the SVRB index is an SVRB index.
  • the SPRB index and the SVRB index may be different.
  • the SRBG may include multiple SPRBs, and the number of SPRBs included in the SRBG is determined according to the bandwidth of the terminal device or is indicated by the network device.
  • the SPRB index may be the number of the SPRB
  • the SRBG index may be the number of the SRBB
  • the SVRB index may be the number of the SVRB
  • the subcarrier index may be the number of the subcarrier, the subcarrier group
  • the reference can be the number of the subcarrier group.
  • the subcarrier group includes at least one subcarrier, where one subcarrier is located in a frequency domain equal to or greater than 15 kHz.
  • the first frequency segment belongs to a low frequency band
  • the second frequency segment belongs to a high frequency band. That is, the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • n is a positive integer.
  • the predetermined condition includes at least one of the following conditions:
  • the signal strength of the first signal is greater than a preset intensity
  • the received power of the first signal is greater than a preset power
  • the receiving quality of the first signal is greater than a preset quality
  • the error rate of the first signal is lower than a preset value
  • the first signal is a signal sent by the terminal device in the first frequency segment.
  • the predetermined conditions include:
  • the distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold; or, when the terminal device performs communication using the first frequency segment
  • the first geographic location belongs to a predetermined area, and the predetermined area is an area determined based on a predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency segment.
  • the predetermined conditions include:
  • the number of antennas of the MIMO antenna used when receiving the first signal exceeds a preset number; or the antenna position of the MIMO antenna used when receiving the first signal conforms to a preset position; or, when receiving the first signal
  • the number of antennas of the used MIMO antenna exceeds a preset number, and the antenna position conforms to the preset position;
  • the first signal is a signal transmitted by the terminal device in the first frequency segment, and the antenna position refers to the position of the used MIMO antenna relative to the MIMO antenna array.
  • the predetermined conditions include:
  • the signal parameter of the signal sent by the terminal device in the first frequency segment received by the second access network device meets the first condition; or the signal of the signal sent by the terminal device in the first frequency segment received by the second access network device
  • the parameter meets the second condition, and the signal parameter of the signal sent by the terminal device received by the first access network device in the first frequency segment meets the third condition;
  • the signal parameters include at least one of signal strength, signal power, signal quality, and signal error rate.
  • the predetermined conditions include:
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength; or the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and the second positioning received by the first access network device
  • the signal receiving strength of the signal is lower than the second strength; or the difference between the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the first access network device is less than a preset Difference
  • the first positioning signal is a positioning signal that is received by the terminal when communicating using the first frequency segment.
  • FIG. 6 shows a flowchart of a reference signal transmitting method provided by another exemplary embodiment for a first possible implementation of a predetermined condition.
  • Embodiments of the present disclosure exemplify the first signal as a first reference signal.
  • the reference signal sending method includes:
  • step 601 the terminal device sends a first reference signal to the access network device in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • step 602 the access network device detects whether the signal strength of the first reference signal is greater than a preset strength
  • step 603 when the signal strength of the first reference signal is greater than the preset strength, the access network device sends a predetermined instruction to the terminal device, where the predetermined instruction is used to instruct the terminal device to send the second reference signal in the second frequency segment;
  • the access network device sends a predetermined instruction to the terminal device in the first frequency segment.
  • the terminal device receives a predetermined instruction sent by the access network device.
  • step 604 the terminal device sends a second reference signal to the access network device in the second frequency segment
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • step 605 the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the access network device in this embodiment may be an access network device corresponding to a cell that the terminal device is ready to camp on or is camping on.
  • the reference signal sending method when the signal strength of the first reference signal sent in the first frequency segment is greater than the preset strength, the access network device instructs the terminal device to send in the second frequency segment.
  • the second reference signal is such that the terminal device does not need to always transmit the second reference signal in the second frequency segment, but selectively transmits the second frequency segment in the second frequency segment according to the communication state of the first frequency segment being better than the predetermined condition
  • the reference signal improves the efficiency of the terminal device transmitting the second reference signal and saves the power consumption required by the terminal device when transmitting the second reference signal.
  • step 602 may be replaced by: the access network device detects whether the received reference signal (RSRP) of the first reference signal is greater than a preset power; as an alternative implementation.
  • the method may be replaced by: the access network device detects whether a reception quality of the first reference signal (Reference Signal Receiving Quality, RSRQ) is greater than a preset quality.
  • the first reference signal is replaced by a first signal, where the first signal is a signal sent by the terminal device in the first frequency segment, and may be an uplink reference signal or a data signal, and the step is 602 can be replaced by: the access network device detects whether the error rate of the first signal is lower than a preset value.
  • FIG. 7A shows a flowchart of a reference signal transmitting method provided by another exemplary embodiment.
  • the reference signal sending method includes:
  • step 701 the terminal device acquires the first geographic location when communicating using the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • the terminal device communicates with the access network device by using the first frequency segment When you are in the letter, get your first geographic location.
  • the terminal device acquires its first geographic location through a Global Positioning System (GPS).
  • GPS Global Positioning System
  • the positioning mode is not limited, and may also be a positioning by a Beidou system, a positioning of a wireless access point, and the like.
  • step 702 the terminal device sends the first geographic location to the access network device by using the first frequency segment
  • the access network device receives the first geographic location sent by the terminal device.
  • the embodiment does not limit the sending manner of step 702. If the terminal device further sends the first geographic location to the access network device except the first frequency segment, the equivalent replacement of step 702 may be implemented. the way.
  • the access network device detects whether the distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold;
  • the access network device pre-stores its own second geographic location.
  • the access network device also stores a second geographic location of the other access network device.
  • the second geographic location of each access network device is typically fixed.
  • the predetermined access network device is an access network device supporting the second frequency segment.
  • the predetermined access network device may be the access network device in step 701 and step 702, or may be an access network device different from the access network device in step 701 and step 702.
  • step 704 when the distance between the first geographic location and the second geographic location is less than a preset threshold, the access network device sends a predetermined instruction to the terminal device, where the predetermined instruction is used to indicate that the terminal device sends the second frequency segment.
  • Second reference signal Second reference signal
  • the access network device sends a predetermined instruction to the terminal device in the first frequency segment.
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • step 706 the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the reference signal sending method provided by this embodiment is used by the access network device to indicate the terminal when the distance between the first geographic location of the terminal device and the second geographic location of the access network device is less than a preset threshold.
  • the device sends the second reference signal in the second frequency segment, so that the terminal device does not need to always send the second reference signal in the second frequency segment, but selectively when the communication state of the first frequency segment is better than the predetermined condition.
  • the second frequency segment transmits the second reference signal, thereby improving the efficiency of the terminal device transmitting the second reference signal, and saving the power consumption required by the terminal device when transmitting the second reference signal.
  • the macro base station 72 simultaneously supports the first frequency segment and the second frequency segment, and the macro base station 72 receives the first geographic location transmitted by the UE 74 in the first frequency segment, when the first geographic location and the second base station 72 are second.
  • the macro base station 72 sends a predetermined command to the UE 74, the predetermined command instructing the UE 74 to transmit the uplink reference signal in the second frequency segment.
  • the macro base station 72 simultaneously supports the first frequency segment and the second frequency segment, and the micro base station 76 located indoors.
  • the second frequency segment is supported.
  • the macro base station 72 receives the first geographic location transmitted by the UE 74 in the first frequency segment, and when the distance d2 between the first geographic location and the second geographic location of the micro base station 76 is less than a preset threshold, the macro base station 72 transmits a predetermined schedule to the UE 74. Instructed, the predetermined instruction instructs the UE 74 to transmit an uplink reference signal in the second frequency segment.
  • step 703 is replaced by: the access network device detects that the first geographic location when the terminal device communicates using the first frequency segment belongs to a predetermined area, and the predetermined area is based on the predetermined access network device. Determined area.
  • the predetermined area is an area determined centering on a predetermined access network device, and the predetermined area may also be designed as an irregular area or an area corresponding to the indoor layout. Therefore, when the terminal device is located indoors, the effect of transmitting the uplink reference signal in the second frequency segment is triggered.
  • FIG. 8 shows a flowchart of a reference signal transmitting method provided by another exemplary embodiment.
  • the reference signal sending method includes:
  • step 801 the terminal device sends a first signal to the access network device in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • the first signal is a signal transmitted by the terminal device in the first frequency segment.
  • the access network device detects that the number of antennas of the multiple-input multiple-output (MIMO) antenna used when receiving the first signal exceeds a preset number;
  • MIMO multiple-input multiple-output
  • the access network device detects whether the number of antennas of the MIMO antenna used when receiving the first signal exceeds 20.
  • step 803 when the number of antennas of the MIMO antenna used by the access network device when receiving the first signal exceeds a preset number, the terminal device sends a predetermined instruction, where the predetermined instruction is used to instruct the terminal device to send in the second frequency segment.
  • Second reference signal Second reference signal
  • the access network device sends a predetermined instruction to the terminal device in the first frequency segment.
  • step 804 the terminal device sends a second reference signal to the access network device in the second frequency segment
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • step 805 the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the access network device in this embodiment may be an access network device corresponding to a cell that the terminal device is ready to camp on or is camping on.
  • the reference signal sending method provided in this embodiment is that, when the number of used MIMO antennas is greater than a preset number, the access network device instructs the terminal device to send the second reference signal in the second frequency segment, so that The terminal device does not need to always transmit the second reference signal in the second frequency segment, but selectively transmits the second reference signal in the second frequency segment according to the communication state of the first frequency segment being better than the predetermined condition, thereby improving The efficiency of the terminal device transmitting the second reference signal and saving the power consumption required by the terminal device when transmitting the second reference signal.
  • step 802 may be replaced by: the access network device detects that the antenna position of the MIMO antenna used when receiving the first signal conforms to a preset position, and the antenna position refers to the relative MIMO antenna used.
  • the location of the MIMO antenna array In an illustrative example, the access network device is a macro base station, and the MIMO antenna array used by the macro base station is curved in a direction from top to bottom, and the position of the used MIMO antenna relative to the MIMO antenna array is located at the upper portion.
  • the macro base station transmits a predetermined instruction to the terminal device.
  • step 802 may be replaced by: the access network device detects that the number of antennas of the MIMO antenna used when receiving the first signal exceeds a preset number, and the antenna position conforms to the preset position.
  • FIG. 9A shows a flowchart of a reference signal transmitting method provided by another exemplary embodiment.
  • the reference signal sending method includes:
  • step 901 the terminal device sends the first reference signal in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • the first reference signal is a reference signal transmitted by the terminal device in the first frequency segment.
  • step 902 the second access network device sends the received signal parameter of the first reference signal to the first access network device
  • the first access network device is an access network device corresponding to a cell that the terminal device is ready to camp on or is camping on.
  • the multiple access network devices can receive the first reference signal.
  • the signal parameters of each access network device when receiving the first reference signal are different, and the signal parameters can be integrated. The location where the terminal device is located is predicted.
  • the signal parameters include at least one of signal strength, signal power, signal quality, and signal error rate.
  • the second access network device directly sends the received signal parameter of the first reference signal to the first access network device; optionally, the second access network device receives the received signal through the core network element.
  • the signal parameter of the first reference signal is sent to the first access network device.
  • step 903 the first access network device detects that the signal parameter of the signal sent by the terminal device received by the second access network device in the first frequency segment meets the first condition
  • the second access network device is at least two
  • the first condition is a condition that the geographic location where the terminal device is located is when the geographic location of the at least two second access network devices is in the preset area.
  • FIG. 9B schematically, there are three second access network devices.
  • the terminal device 90 When the terminal device 90 is located in the second access network device near the second access network device 92 in the upper left corner, the second interface in the upper left corner The signal strength of the first reference signal received by the network access device 92 is greater than the strength A; the signal strength of the first reference signal received by the second access network device 94 in the upper right corner is less than the intensity A and greater than the intensity B; The signal strength of the first reference signal received by the access network device 96 is less than the intensity A and greater than the intensity B. If the first access network device 98 detects that the signal parameters of the first reference signal sent by the terminal device received by the third access network device in the first frequency segment meet the first condition, the terminal device 90 has a great possibility. Located in the area shown in Figure 9B.
  • the first access network device touches The transmitting terminal device transmits the second reference signal in the second frequency segment.
  • the first access network device sends a predetermined instruction to the terminal device when the signal parameter of the signal sent by the terminal device in the first frequency segment that is received by the second access network device meets the first condition, the predetermined instruction And configured to instruct the terminal device to send the second reference signal in the second frequency segment;
  • the first access network device sends a predetermined instruction to the terminal device in the first frequency segment.
  • step 905 the terminal device sends a second reference signal in the second frequency segment
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • step 906 the first access network device and/or the second access network device receives the second reference signal transmitted by the terminal device in the second frequency segment.
  • the first access network device and/or the second access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the reference signal sending method provided by the embodiment is used by the access network device when the signal parameter of the signal sent by the terminal device in the first frequency segment that is received by the second access network device meets the first condition. Instructing the terminal device to send the second reference signal in the second frequency segment, so that the terminal device does not need to always send the second reference signal in the second frequency segment, but according to the communication state of the first frequency segment is better than the predetermined condition, the selectivity The second reference signal is transmitted in the second frequency segment, thereby improving the efficiency of the terminal device transmitting the second reference signal, and saving the power consumption required by the terminal device when transmitting the second reference signal.
  • the step 903 may be replaced by: the first access network device detecting, by the second access network device, that the signal parameter of the signal sent by the terminal device in the first frequency segment meets the second condition, And the signal parameter of the signal sent by the terminal device received by the first access network device in the first frequency segment meets the third condition. That is, the first access network device integrates the reception status of itself and other access network devices, and predicts the area where the terminal device is located.
  • FIG. 10 shows a flow chart of a reference signal transmission method provided by an exemplary embodiment.
  • the reference signal sending method includes:
  • step 1001 the terminal device receives the first positioning signal
  • the first positioning signal is a positioning signal that is received by the terminal when communicating using the first frequency segment.
  • the first frequency segment belongs to a low frequency band.
  • step 1002 the terminal device sends the received signal strength of the received first positioning signal to the access network device;
  • the access network device is an access network device corresponding to a cell that the terminal device is ready to camp on or is camping on.
  • the access network device receives the signal receiving strength of the first positioning signal sent by the terminal device.
  • step 1003 the access network device detects whether the signal reception strength of the first positioning signal received by the terminal device is lower than the first strength
  • Reference signal measurement based on high frequency band will be widely applied to indoor environment, when in indoor environment, terminal The signal receiving strength of the first positioning signal received by the device is weakened. Therefore, the access network device detects whether the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, so as to determine whether the terminal device is located in the indoor environment.
  • both the terminal device and the access network device are in an indoor environment, there is a greater possibility that the terminal device needs to start the transmission process of the reference signal in the high frequency band.
  • step 1004 when the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, the access network device sends a predetermined instruction to the terminal device, where the predetermined instruction is used to indicate that the terminal device is in the second frequency segment. Sending a second reference signal;
  • the access network device sends a predetermined instruction to the terminal device in the first frequency segment.
  • step 1005 the terminal device sends a second reference signal to the access network device in the second frequency segment
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • step 1006 the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the reference signal sending method when the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, the access network device instructs the terminal device to send in the second frequency segment.
  • the second reference signal is such that the terminal device does not need to always transmit the second reference signal in the second frequency segment, but selectively transmits the second frequency segment in the second frequency segment according to the communication state of the first frequency segment being better than the predetermined condition
  • the reference signal improves the efficiency of the terminal device transmitting the second reference signal and saves the power consumption required by the terminal device when transmitting the second reference signal.
  • the step 1003 is implemented as follows: the access network device detects whether the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and the access network device receives the second The signal receiving strength of the positioning signal is lower than the second intensity;
  • the step 1003 is implemented as follows: the access network device detects the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the access network device. The difference between them is less than the preset difference.
  • the access network device detects the predetermined condition, and the access network device sends a predetermined instruction to the terminal device according to the detection result as an example for illustration.
  • the detection process of the predetermined condition described above may be performed by the terminal device.
  • FIG. 11 is a flow chart showing a method of transmitting a reference signal provided by an exemplary embodiment.
  • the reference signal sending method includes:
  • step 1101 the terminal device communicates with the first access network device in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • Communication includes at least one of the following situations: the terminal device transmits a signal to the access network device; the access network device transmits a signal to the terminal device; the terminal device transmits the first to the access network device The signal, the access network device feeds back the second signal to the terminal device based on the first signal; the access network device sends the third signal to the terminal device, and the terminal device feeds back the fourth signal and the like to the terminal device based on the third signal.
  • the signal is a reference signal or data, etc., and the embodiment of the present disclosure does not specifically define the type or specific content of the signal.
  • step 1102 the terminal device detects whether the communication in the first frequency segment satisfies a predetermined condition
  • the predetermined condition is a condition for judging the communication state between the terminal device and the access network device.
  • the first frequency segment belongs to the low frequency band and the second frequency segment belongs to the high frequency band
  • the communication state of the first frequency segment is better than the predetermined condition, the communication of the terminal device in the second frequency segment is triggered.
  • step 1103 the terminal device transmits the reference signal in the second frequency segment when the communication of the first frequency segment satisfies the predetermined condition
  • the first frequency segment is different from the second frequency segment.
  • the second frequency segment belongs to a high frequency band.
  • the type of the uplink reference signal sent by the terminal device is not limited to a Demodulation Reference Signal (DMRS), a Sounding Reference Signal (SRS), and a channel state information reference signal (CSI Reference Signal).
  • DMRS Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • CSI Reference Signal channel state information reference signal
  • the CSI-RS may also actively transmit the newly added uplink reference signals by the terminal device, and the newly added uplink reference signals have the same or similar functions as some downlink reference signals in the LTE.
  • the terminal device is regarded as a “mobile base station”, and the terminal device transmits a cell-specific reference signal (CRS). Therefore, the uplink reference signal in the embodiment of the present disclosure refers to any possible reference signal sent by the terminal device, and these reference signals may be used for channel estimation or channel state measurement and the like.
  • the access network device receives the reference signal sent by the terminal device in the second frequency segment, and performs channel estimation or channel state information measurement on the channel in the second frequency segment according to the reference signal.
  • the reference signal sending method provided in this embodiment is that when the communication between the terminal device and the access network device in the first frequency segment meets the preset condition, the terminal device sends the reference signal in the second frequency segment;
  • the access network device transmits the reference signal with low efficiency; the reference signal can be transmitted not only by the terminal device but also according to the specific communication situation of the first frequency segment, optionally in the second
  • the frequency segment transmits the reference signal, which improves the efficiency of the terminal device transmitting the reference signal, and reduces the effect of the power consumption required by the terminal device when transmitting the reference signal in the second frequency segment.
  • communicating in the first frequency segment may be considered to use time-frequency resources belonging to the first frequency segment for communication; alternatively, “transmitting the reference signal in the second frequency segment” may be considered The time-frequency resources belonging to the second frequency segment are used for communication.
  • the predetermined condition includes at least one of the following conditions:
  • the signal strength of the second signal is greater than a preset intensity
  • the received power of the second signal is greater than the preset power
  • the receiving quality of the second signal is greater than the preset quality
  • the error rate of the second signal is lower than a preset value
  • the second signal is a signal sent by the first access network device in the first frequency segment.
  • the predetermined conditions include:
  • the distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold
  • the first geographical location when the terminal device communicates using the first frequency segment belongs to a predetermined area, and the predetermined area is an area determined based on the predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency end.
  • the predetermined conditions include:
  • the number of antennas of the multiple input multiple output MIMO antenna used by the terminal device when transmitting signals in the first frequency segment exceeds a preset number
  • the antenna position of the MIMO antenna used by the terminal device when transmitting the signal in the first frequency segment meets the preset position
  • the number of antennas of the MIMO antenna used by the terminal device to transmit signals in the first frequency segment exceeds a preset number, and the antenna position conforms to the preset position;
  • the antenna position refers to the position of the MIMO antenna used relative to the MIMO antenna array.
  • the predetermined conditions include:
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength
  • the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and the signal receiving strength of the second positioning signal received by the first access network device is lower than the second strength;
  • the difference between the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the first access network device is less than a preset difference
  • the first positioning signal is a positioning signal that is received by the terminal device when communicating using the first frequency segment.
  • FIG. 12 shows a flowchart of a reference signal transmitting method provided by an exemplary embodiment.
  • the embodiment of the present disclosure exemplifies a second signal as a second reference signal.
  • the reference signal sending method includes:
  • step 1201 the access network device sends a first reference signal to the terminal device in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • step 1202 the terminal device detects whether the signal strength of the first reference signal is greater than a preset strength
  • step 1203 the terminal device sends a second reference signal to the access network device in the second frequency segment when the signal strength of the first reference signal is greater than the preset strength;
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the frequency of the first frequency segment. limit.
  • the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the access network device in this embodiment may be an access network device corresponding to a cell that the terminal device is ready to camp on or is camping on.
  • the terminal device when the signal strength of the first reference signal transmitted in the first frequency segment is greater than the preset strength, the terminal device sends a second reference in the second frequency segment by itself.
  • the signal is such that the terminal device does not need to always transmit the second reference signal in the second frequency segment, but selectively transmits the second reference signal in the second frequency segment according to the communication state of the first frequency segment being better than the predetermined condition.
  • the step 1202 may be replaced by: the terminal device detecting whether the received reference signal (RSRP) of the first reference signal is greater than the preset power; as another alternative implementation, Step 1202 may be replaced by: determining, by the terminal device, whether a reception signal (Reference Signal Receiving Quality, RSRQ) of the first reference signal is greater than a preset quality.
  • the first reference signal is replaced by a second signal, and the second signal is a signal sent by the access network device in the first frequency segment, and may be a downlink reference signal or a data signal.
  • Step 1202 may be replaced by: the terminal device detecting whether the error rate of the second signal is lower than a preset value.
  • FIG. 13 shows a flow chart of a reference signal transmitting method provided by another exemplary embodiment.
  • the reference signal sending method includes:
  • step 1301 the terminal device acquires the first geographic location when communicating using the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • the terminal device acquires its first geographic location when communicating with the access network device using the first frequency segment.
  • the terminal device acquires its first geographic location through a Global Positioning System (GPS).
  • GPS Global Positioning System
  • the positioning mode is not limited, and may also be a positioning by a Beidou system, a positioning of a wireless access point, and the like.
  • step 1302 the terminal device acquires a second geographic location of the predetermined access network device
  • the terminal device pre-stores a second geographic location of the predetermined access network device, and the second geographic location of each access network device is generally fixed.
  • the terminal device sends a geographic location query request to the predetermined access network device by using the first frequency segment, and receives the second geographic location that is fed back by the access network device.
  • the embodiment does not limit the sending manner of step 1302. If the terminal device still has other ways to obtain the second geographic location of the predetermined access network device, it may be an equivalent alternative implementation of step 1302.
  • step 1303 the terminal device detects whether the distance between the first geographic location and the second geographic location of the predetermined access network device is less than a preset threshold
  • the predetermined access network device is an access network device supporting the second frequency segment.
  • the predetermined access network device may be an access network device that the terminal device currently camps on or communicates with, or may be another access network device that is different from the access network device that the terminal device currently camps on or communicates with.
  • step 1304 the terminal device sends the second reference signal in the second frequency segment when the distance between the first geographic location and the second geographic location is less than a preset threshold.
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • the predetermined access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the predetermined access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the reference signal sending method provided in this embodiment is determined by the terminal device when the distance between the first geographic location of the terminal device and the second geographic location of the access network device is less than a preset threshold.
  • the second frequency segment transmits the second reference signal, so that the terminal device does not need to always send the second reference signal in the second frequency segment, but selectively selects the second frequency according to the communication state of the first frequency segment is better than the predetermined condition.
  • the segment transmits the second reference signal, thereby improving the efficiency of the terminal device transmitting the second reference signal, and saving the power consumption required by the terminal device when transmitting the second reference signal.
  • step 1303 is replaced by the terminal device detecting that the first geographic location when communicating using the first frequency segment belongs to a predetermined area, the predetermined area being based on the area determined by the predetermined access network device.
  • the predetermined area is an area determined centering on a predetermined access network device, and the predetermined area may also be designed as an irregular area or an area corresponding to the indoor layout. Therefore, when the terminal device is located indoors, the effect of transmitting the uplink reference signal in the second frequency segment is triggered.
  • FIG. 14 shows a flowchart of a reference signal transmitting method provided by another exemplary embodiment.
  • the reference signal sending method includes:
  • step 1401 the terminal device sends a first signal to the access network device in the first frequency segment
  • the first frequency segment belongs to a low frequency band.
  • the first signal is a signal transmitted by the terminal device in the first frequency segment.
  • step 1402 the terminal device detects that the number of antennas of the MIMO antenna used when transmitting the first signal exceeds a preset number
  • the terminal device detects whether the number of antennas of the MIMO antenna used when transmitting the first signal exceeds 20.
  • step 1403 when the number of antennas of the MIMO antenna used by the terminal device when transmitting the first signal exceeds a preset number, the second reference signal is sent to the access network device in the second frequency segment;
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the access network device in this embodiment may be an access network device corresponding to a cell that the terminal device is ready to camp on or is camping on.
  • the reference signal sending method provides that the second reference signal is sent by the terminal device in the second frequency segment by using the MIMO antenna to be greater than the preset number, so that the terminal device It is not necessary to always transmit the second reference signal in the second frequency segment, but to selectively transmit the second reference signal in the second frequency segment according to the communication state of the first frequency segment being better than the predetermined condition, thereby improving the transmission of the terminal device.
  • the efficiency of the second reference signal and the power consumption required by the terminal device when transmitting the second reference signal is saved.
  • step 1402 may be replaced by: the terminal device detects that the antenna position of the MIMO antenna used when transmitting the first signal conforms to a preset position, and the antenna position refers to the used MIMO antenna relative to the MIMO antenna. The location of the array.
  • step 1402 may be replaced by: the terminal device detects that the number of antennas of the MIMO antenna used when transmitting the first signal exceeds a preset number, and the antenna position conforms to the preset position.
  • FIG. 15 shows a flow chart of a reference signal transmission method provided by an exemplary embodiment.
  • the reference signal sending method includes:
  • step 1501 the terminal device receives the first positioning signal
  • the first positioning signal is a positioning signal that is received by the terminal when communicating using the first frequency segment.
  • the first frequency segment belongs to a low frequency band.
  • step 1502 the terminal device detects whether the received signal strength of the received first positioning signal is lower than the first strength
  • the reference signal measurement based on the high frequency band will be widely applied to the indoor environment.
  • the signal receiving strength of the first positioning signal received by the terminal device will be weakened, so the access network device detects the receiving of the terminal device. Whether the signal receiving strength of a positioning signal is lower than the first strength to determine whether the terminal device is located in the indoor environment.
  • both the terminal device and the access network device are in an indoor environment, there is a greater possibility that the terminal device needs to start the transmission process of the reference signal in the high frequency band.
  • step 1503 the terminal device sends a second reference signal to the access network device in the second frequency segment when the received signal strength of the received first positioning signal is lower than the first strength;
  • the second frequency segment belongs to the high frequency band, and the lower frequency limit of the second frequency segment is higher than the upper frequency limit of the first frequency segment.
  • the access network device receives the second reference signal sent by the terminal device in the second frequency segment.
  • the access network device performs channel estimation or channel state information measurement according to the second reference signal.
  • the terminal device when the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, the terminal device sends a second reference in the second frequency segment by itself.
  • the signal is such that the terminal device does not need to always transmit the second reference signal in the second frequency segment, but selectively transmits the second reference signal in the second frequency segment according to the communication state of the first frequency segment being better than the predetermined condition.
  • the terminal device can acquire the signal receiving strength of the second positioning signal of the access network device, and the step 1502 is replaced by: the terminal device detects whether the received signal strength of the received first positioning signal is Lower than the first strength, and the signal receiving strength of the second positioning signal received by the access network device is lower than the second strength;
  • step 1502 is instead implemented as: the terminal device detects between the received signal strength of the received first positioning signal and the signal receiving strength of the second positioning signal received by the access network device. The difference is less than the preset difference.
  • the predetermined condition includes that the first geographic location of the terminal device and the second geographic location of the access network device are less than a preset distance, and the signal strength of the first positioning signal received by the terminal device is less than the first strength. And the like, which will be easily understood by those skilled in the art according to the above embodiments and examples, will not be further described.
  • the terminal device may activate the corresponding second when receiving the predetermined instruction or determining that the predetermined condition is met by itself.
  • the antenna and/or power amplifier module of the frequency segment is in an active state.
  • steps related to the terminal device in the foregoing method embodiments may be performed by a processor (communication chip) in the terminal device described in FIG. 3 running one or more programs located in the memory;
  • the steps of the access network devices in the various method embodiments described above may be trusted by a processor in the access network device shown in FIG. 2 running one or more programs located in the memory.
  • Figure 16 is a block diagram showing the structure of a signaling transmitting apparatus provided by an exemplary embodiment.
  • the signaling device can be implemented as a whole or part of an access network device through a dedicated hardware circuit, or a combination of hardware and software.
  • the signaling sending device includes:
  • the processing module 1620 is configured to detect whether the communication of the terminal device in the first frequency segment meets a predetermined condition
  • the sending module 1640 is configured to: when the communication of the first frequency segment meets a predetermined condition, send predetermined signaling to the terminal device, where the predetermined signaling is used to instruct the terminal device to send the reference signal in the second frequency segment;
  • first frequency segment is different from the second frequency segment.
  • the predetermined condition includes at least one of the following conditions: the signal strength of the first signal is greater than the preset strength; the received power of the first signal is greater than the preset power; the received quality of the first signal is greater than the preset quality; The error rate of the signal is lower than a preset value; wherein the first signal is a signal sent by the terminal device in the first frequency segment.
  • the predetermined condition includes: a distance between the first geographic location when the terminal device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold; or, the terminal device is in use
  • the first geographic location when the first frequency segment is in communication belongs to a predetermined area, and the predetermined area is an area determined based on a predetermined access network device;
  • the predetermined access network device is an access network device supporting the second frequency segment.
  • the predetermined condition includes: the number of antennas of the multiple input multiple output MIMO antenna used when receiving the first signal exceeds a preset number; or the antenna position of the MIMO antenna used when receiving the first signal conforms to a preset position; Or, the number of antennas of the MIMO antenna used when receiving the first signal exceeds a preset number, and the antenna position conforms to the preset position; wherein the first signal is a signal sent by the terminal device in the first frequency segment, and the antenna position is The location of the MIMO antenna used relative to the MIMO antenna array.
  • the predetermined condition includes: the signal parameter of the signal sent by the terminal device in the first frequency segment received by the second access network device meets the first condition; or the terminal device received by the second access network device is in the first The signal parameter of the signal sent by the frequency segment meets the second condition, and the signal parameter of the signal sent by the terminal device in the first frequency segment received by the signaling device meets the third condition; wherein the signal parameter includes: the signal strength and the signal At least one of power, signal quality, and signal error rate.
  • the predetermined condition includes: the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength; or the signal receiving strength of the first positioning signal received by the terminal device is lower than the first strength, and signaling The signal receiving strength of the second positioning signal received by the device is lower than the second intensity;
  • the difference between the signal receiving strength of the first positioning signal received by the terminal device and the signal receiving strength of the second positioning signal received by the signaling device is less than a preset difference; wherein the first positioning signal is that the terminal is in use The positioning signal received when the first frequency segment performs communication.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • the reference signal comprises at least one of the following reference signals: a specific reference signal for the terminal device, DMRS, SRS, CSI-RS.
  • FIG 17 is a block diagram showing the structure of a reference signal transmitting apparatus provided by an exemplary embodiment.
  • the reference signal transmitting device can be implemented as a whole or a part of the terminal device through a dedicated hardware circuit, or a combination of hardware and software.
  • the reference signal transmitting device includes:
  • the processing module 1720 is configured to communicate with the access network device in the first frequency segment
  • the receiving module 1740 is configured to receive a predetermined instruction sent by the access network device, where the predetermined instruction is sent by the access network device when the communication of the first frequency segment meets a preset condition;
  • the sending module 1760 is configured to send the reference signal in the second frequency segment
  • first frequency segment is different from the second frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.
  • the reference signal comprises at least one of the following reference signals:
  • a specific reference signal, DMRS, SRS, CSI-RS for the terminal device is DMRS, SRS, CSI-RS for the terminal device.
  • Fig. 18 is a block diagram showing the configuration of a reference signal transmitting apparatus provided by an exemplary embodiment.
  • the reference signal transmitting device can be implemented as a whole or a part of the terminal device through a dedicated hardware circuit, or a combination of hardware and software.
  • the reference signal transmitting device includes:
  • the processing module 1720 is configured to communicate with the first access network device in the first frequency segment;
  • the processing module 1720 is configured to detect whether the communication in the first frequency segment satisfies a predetermined condition
  • the sending module 1760 is configured to send the reference signal in the second frequency segment when the communication of the first frequency segment satisfies a predetermined condition
  • first frequency segment is different from the second frequency segment.
  • the predetermined condition includes at least one of the following conditions: the signal strength of the second signal is greater than the preset strength; the received power of the second signal is greater than the preset power; the receiving quality of the second signal is greater than the preset quality; The error rate of the signal is lower than a preset value; wherein the second signal is a signal sent by the first access network device in the first frequency segment.
  • the predetermined condition includes: a distance between the first geographic location when the reference signal transmitting device communicates using the first frequency segment and the second geographic location of the predetermined access network device is less than a preset threshold; or, the reference signal The first geographical location when the transmitting device communicates using the first frequency segment belongs to a predetermined area, and the predetermined area is an area determined based on the predetermined access network device; wherein the predetermined access network device is an access network supporting the second frequency end device.
  • the predetermined condition includes: the number of antennas of the multiple input multiple output MIMO antenna used by the reference signal transmitting device when transmitting the signal in the first frequency segment exceeds a preset number; or, the reference signal transmitting device transmits the signal in the first frequency segment
  • the antenna position of the MIMO antenna used at the time is in accordance with the preset position; or the number of antennas of the MIMO antenna used by the reference signal transmitting device to transmit the signal in the first frequency segment exceeds a preset number, and the antenna position conforms to the preset position;
  • the antenna position refers to the position of the MIMO antenna used relative to the MIMO antenna array.
  • the predetermined condition includes: the signal receiving strength of the first positioning signal received by the reference signal transmitting device is lower than the first strength; or the signal receiving strength of the first positioning signal received by the reference signal transmitting device is lower than the first strength, And the signal receiving strength of the second positioning signal received by the first access network device is lower than the second strength; or the signal receiving strength of the first positioning signal received by the reference signal transmitting device and the second received by the first access network device
  • the difference between the signal receiving intensities of the positioning signals is less than a preset difference; wherein the first positioning signal is a positioning signal received by the reference signal transmitting device when communicating using the first frequency segment.
  • the upper frequency limit of the first frequency segment is lower than the lower frequency limit of the second frequency segment.
  • the second frequency segment is n, and each of the second frequency segments corresponds to a respective predetermined condition.

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Abstract

本公开揭示了一种信令发送方法、参考信号发送方法、装置及系统，属于通信领域。所述方法包括：接入网设备检测终端设备在第一频率段的通信是否满足预定条件；终端设备接收预定指令后，在第二频率段发送参考信号。通过终端设备与接入网设备在第一频率段的通信满足预设条件时，由终端设备在第二频率段发送参考信号；解决了在组网环境比较复杂时，接入网设备发送参考信号的效率低下的问题；达到了不仅可以由终端设备来发送参考信号，而且视第一频率段的具体通信情况，选择性地在第二频率段发送参考信号，提高了终端设备发送参考信号的效率，降低了终端设备在第二频率段发送参考信号时所需要的电量消耗的效果。

Description

信令发送方法、参考信号发送方法、装置及系统
本申请基于申请号为201610344922.3、申请日为2016年5月23日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及通信领域，特别涉及一种信令发送方法、参考信号发送方法、装置及系统。
背景技术
参考信号(Reference Signal，RS)是由发射端提供给接收端用于信道估计或信道探测的一种信号。
在长期演进(Long Term Evolution，LTE)系统中，通常由演进型基站(evolutional Node B，eNB或e-NodeB)在服务范围内发送下行参考信号，位于该服务范围内的用户设备(User Equipment，UE)对该下行参考信号进行测量，并根据测量结果执行随机接入过程或数据收发过程。
发明内容
本公开提供一种信令发送方法、参考信号发送方法、装置及系统。所述技术方案如下：
根据本公开实施例的第一方面，提供一种信令发送方法，该方法包括：
第一接入网设备检测终端设备在第一频率段的通信是否满足预定条件；
第一接入网设备在第一频率段的通信满足预定条件时，向终端设备发送预定信令，预定信令用于指示终端设备在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
在一个可选的实施例中，预定条件包括如下条件中的至少一种：
第一信号的信号强度大于预设强度；
第一信号的接收功率大于预设功率；
第一信号的接收质量大于预设质量；
第一信号的误码率低于预设值；
其中，第一信号是终端设备在第一频率段发送的信号。
在一个可选的实施例中，预定条件包括:
终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
或，
终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率段的接入网设备。
在一个可选的实施例中，预定条件包括：
接收第一信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
或，
接收第一信号时所使用的MIMO天线的天线位置符合预设位置；
或，
接收第一信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
其中，第一信号是终端设备在第一频率段发送的信号，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
在一个可选的实施例中，预定条件包括：
第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件；
或，
第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第二条件，且第一接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第三条件；
其中，信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
在一个可选的实施例中，预定条件包括：
终端设备接收的第一定位信号的信号接收强度低于第一强度；
或，
终端设备接收的第一定位信号的信号接收强度低于第一强度，且第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
或，
终端设备接收的第一定位信号的信号接收强度与第一接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值；
其中，第一定位信号是终端在使用第一频率段进行通信时接收的定位信号。
在一个可选的实施例中，第一频率段的频率上限低于第二频率段的频率下限。
在一个可选的实施例中，第二频率段为n个，每个第二频率段对应各自的预定条件。
在一个可选的实施例中，参考信号包括如下参考信号中的至少一种：
用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
根据本公开的第二方面，提供了一种参考信号发送方法，该方法包括：
终端设备与接入网设备在第一频率段进行通信；
终端设备接收接入网设备发送的预定指令，预定指令是接入网设备在第一频率段的通信满足预设条件时发送的；
终端设备在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
在一个可选的实施例中，第一频率段的频率上限低于第二频率段的频率下限。
在一个可选的实施例中，第二频率段为n个，每个第二频率段对应各自的预定条件。
在一个可选的实施例中，参考信号包括如下参考信号中的至少一种：
用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
根据本公开的第三方面，提供了一种参考信号发送方法，该方法包括：
终端设备与第一接入网设备在第一频率段进行通信；
终端设备检测在第一频率段的通信是否满足预定条件；
终端设备在第一频率段的通信满足预定条件时，在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
在一个可选的实施例中，预定条件包括如下条件中的至少一种：
第二信号的信号强度大于预设强度；
第二信号的接收功率大于预设功率；
第二信号的接收质量大于预设质量；；
第二信号的误码率低于预设值；
其中，第二信号是第一接入网设备在第一频率段发送的信号。
在一个可选的实施例中，预定条件包括:
终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
或，
终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率端的接入网设备。
在一个可选的实施例中，预定条件包括：
终端设备在第一频率段发送信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
或，
终端设备在第一频率段发送信号时所使用的MIMO天线的天线位置符合预设位置；
或，
终端设备在第一频率段发送信号时所使用的MIMO天线的天线数量超过预设数量， 且天线位置符合预设位置；
其中，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
在一个可选的实施例中，预定条件包括：
终端设备接收的第一定位信号的信号接收强度低于第一强度；
或，
终端设备接收的第一定位信号的信号接收强度低于第一强度，且第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
或，
终端设备接收的第一定位信号的信号接收强度与第一接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值；
其中，第一定位信号是终端设备在使用第一频率段进行通信时接收的定位信号。
在一个可选的实施例中，第一频率段的频率上限低于第二频率段的频率下限。
在一个可选的实施例中，第二频率段为n个，每个第二频率段对应各自的预定条件。
根据本公开的第四方面，提供了一种信令发送装置，该装置包括：
处理模块，被配置为检测终端设备在第一频率段的通信是否满足预定条件；
发送模块，被配置为在第一频率段的通信满足预定条件时，向终端设备发送预定信令，预定信令用于指示终端设备在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
在一个可选的实施例中，预定条件包括如下条件中的至少一种：
第一信号的信号强度大于预设强度；
第一信号的接收功率大于预设功率；
第一信号的接收质量大于预设质量；；
第一信号的误码率低于预设值；
其中，第一信号是终端设备在第一频率段发送的信号。
在一个可选的实施例中，预定条件包括:
终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
或，
终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率段的接入网设备。
在一个可选的实施例中，预定条件包括：
接收第一信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
或，
接收第一信号时所使用的MIMO天线的天线位置符合预设位置；
或，
接收第一信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
其中，第一信号是终端设备在第一频率段发送的信号，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
在一个可选的实施例中，预定条件包括：
第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件；
或，
第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第二条件，且信令发送装置接收到的终端设备在第一频率段发送的信号的信号参数符合第三条件；
其中，信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
在一个可选的实施例中，预定条件包括：
终端设备接收的第一定位信号的信号接收强度低于第一强度；
或，
终端设备接收的第一定位信号的信号接收强度低于第一强度，且信令发送装置接收的第二定位信号的信号接收强度低于第二强度；
或，
终端设备接收的第一定位信号的信号接收强度与信令发送装置接收的第二定位信号的信号接收强度之间的差值小于预设差值；
其中，第一定位信号是终端在使用第一频率段进行通信时接收的定位信号。
在一个可选的实施例中，第一频率段的频率上限低于第二频率段的频率下限。
在一个可选的实施例中，第二频率段为n个，每个第二频率段对应各自的预定条件。
在一个可选的实施例中，参考信号包括如下参考信号中的至少一种：
用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
根据本公开的第五方面，提供了一种参考信号发送装置，该装置包括：
处理模块，被配置为与接入网设备在第一频率段进行通信；
接收模块，被配置为接收接入网设备发送的预定指令，预定指令是接入网设备在第一频率段的通信满足预设条件时发送的；
发送模块，被配置为在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
在一个可选的实施例中，第一频率段的频率上限低于第二频率段的频率下限。
在一个可选的实施例中，第二频率段为n个，每个第二频率段对应各自的预定条件。
在一个可选的实施例中，参考信号包括如下参考信号中的至少一种：
用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
根据本公开的第六方面，提供了一种参考信号发送装置，该装置包括：
处理模块，被配置为与第一接入网设备在第一频率段进行通信；
处理模块，被配置为检测在第一频率段的通信是否满足预定条件；
发送模块，被配置为在第一频率段的通信满足预定条件时，在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
在一个可选的实施例中，预定条件包括如下条件中的至少一种：
第二信号的信号强度大于预设强度；
第二信号的接收功率大于预设功率；
第二信号的接收质量大于预设质量；；
第二信号的误码率低于预设值；
其中，第二信号是第一接入网设备在第一频率段发送的信号。
在一个可选的实施例中，预定条件包括:
参考信号发送装置在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
或，
参考信号发送装置在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率端的接入网设备。
在一个可选的实施例中，预定条件包括：
参考信号发送装置在第一频率段发送信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
或，
参考信号发送装置在第一频率段发送信号时所使用的MIMO天线的天线位置符合预设位置；
或，
参考信号发送装置在第一频率段发送信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
其中，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
在一个可选的实施例中，预定条件包括：
参考信号发送装置接收的第一定位信号的信号接收强度低于第一强度；
或，
参考信号发送装置接收的第一定位信号的信号接收强度低于第一强度，且第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
或，
参考信号发送装置接收的第一定位信号的信号接收强度与第一接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值；
其中，第一定位信号是参考信号发送装置在使用第一频率段进行通信时接收的定位信号。
在一个可选的实施例中，第一频率段的频率上限低于第二频率段的频率下限。
在一个可选的实施例中，第二频率段为n个，每个第二频率段对应各自的预定条件。
根据本公开的第七方面，提供了一种接入网设备，该设备包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为：
检测终端设备在第一频率段的通信是否满足预定条件；
在第一频率段的通信满足预定条件时，向终端设备发送预定信令，预定信令用于指示终端设备在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
根据本公开的第八方面，提供了一种终端设备，该设备包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为：
与接入网设备在第一频率段进行通信；
接收接入网设备发送的预定指令，预定指令是接入网设备在第一频率段的通信满足预设条件时发送的；
在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
根据本公开的第九方面，提供了一种终端设备，该设备包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为：
与第一接入网设备在第一频率段进行通信；
检测在第一频率段的通信是否满足预定条件；
在第一频率段的通信满足预定条件时，在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
根据本公开的第十方面，提供了一种移动通信系统，该移动通信系统包括：接入网设 备和终端设备；
接入网设备包括如第四方面及任一种可选的实施方式中所述的装置；
终端设备包括如第五方面及任一种可选的实施方式中所述的装置。
根据本公开的第十一方面，提供了一种移动通信系统，该移动通信系统包括：接入网设备和终端设备；
终端设备包括如第六方面及任一种可选的实施方式中所述的装置。
根据本公开的第十二方面，提供了一种移动通信系统，该移动通信系统包括：接入网设备和终端设备；
接入网设备是如第七方面所述的接入网设备；
终端设备是如第八方面所述的终端设备。
根据本公开的第十三方面，提供了一种移动通信系统，该移动通信系统包括：接入网设备和终端设备；
终端设备是如第九方面所述的终端设备。
本公开的实施例提供的技术方案可以包括以下有益效果：
通过终端设备与接入网设备在第一频率段的通信满足预设条件时，由终端设备在第二频率段发送参考信号；解决了在组网环境比较复杂时，接入网设备发送参考信号的效率低下的问题；达到了不仅可以由终端设备来发送参考信号，而且视第一频率段的具体通信情况，选择性地在第二频率段发送参考信号，提高了终端设备发送参考信号的效率，降低了终端设备在第二频率段发送参考信号时所需要的电量消耗的效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并于说明书一起用于解释本公开的原理。
图1示出了一示例性实施例所提供的移动通信系统的结构示意图；
图2示出了一示例性实施例所提供的接入网设备的结构示意图；
图3示出了一示例性实施例所提供的终端设备的结构示意图；
图4示出了一示例性实施例所提供的第一频率段与第二频率段的划分示意图；
图5示出了一示例性实施例所提供的参考信号发送方法的流程图；
图6示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图7A示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图7B示出了图7A所示实施例提供的参考信号发送方法在一种具体实施时的示意图；
图7C示出了图7A所示实施例提供的参考信号发送方法在另一种具体实施时的示意图；
图8示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图9A示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图9B示出了图9A所示实施例提供的参考信号发送方法在一种具体实施时的示意图；
图10示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图11示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图12示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图13示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图14示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图15示出了另一示例性实施例所提供的参考信号发送方法的流程图；
图16示出了一示例性实施例所提供的参考信号发送装置的方框图；
图17示出了一示例性实施例所提供的参考信号发送装置的方框图；
图18示出了一示例性实施例所提供的参考信号发送装置的方框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
在本文提及的“单元”是指存储在存储器中的能够实现某些功能的程序或指令；在本文中提及的“模块”是指按照逻辑划分的功能性结构，该“模块”可以由纯硬件实现，或者，软硬件的结合实现。
在本文中提及的“多个”是指两个或两个以上。“和/或”，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。符号“/”一般表示前后关联对象是一种“或”的关系。
在第四代(4-Generation，4G)移动通信系统中，比如在LTE系统中，通常由接入网设备以小区为单位向UE提供无线通信服务，UE驻留在某个小区中使用无线通信服务。在4G系统中，接入网设备通常是指eNB。
随着移动通信网络的组网技术的发展，eNB及配套设备的具体实现形式包括但不限于：宏基站、微基站、直放站等。宏基站通常为铁塔站，每个宏基站的覆盖范围可达几十公里。微基站是在楼宇中、密集区或室内安装的小型基站，覆盖范围小，主要设置在宏基站所覆盖不到的范围中。直放站是一种信号中继器，对基站发出的射频信号根据需要放大，本身不能提供容量，其应用环境主要包括覆盖不好且容量要求比较小的区域。由宏基站、微基站和直放站等形式的eNB所组成的无线接入网络(Radio Access Network，RAN)已经不再是典型且规则的蜂窝网络。为此，存在一种技术改进思路：将传统的eNB发送参 考信号并由UE进行网络测量的机制，改为由UE发送参考信号并由eNB进行网络测量的机制。在这种技术改进思路下，UE被视为类似于“可移动的基站”，UE会主动发送各种参考信号供eNB进行网络测量。
发明人在技术改进过程中发现，第五代(5-Generation，5G)移动通信系统中所支持的频段更多样，5G系统除了支持低于6GHZ的传统频段或者说低频频段，比如4G系统所支持的2GHZ频段；还支持高于6GHZ的高频频段，比如20GHZ+的频段。由于低频频段和高频频段的传播特性差别很大，采用高频频段发送的无线信号衰减很快，当采用电池供电的终端设备采用“高频频段+低频频段”的形式发送参考信号时，不仅参考信号的发送效率极低，各个终端设备之间容易形成上行干扰，而且终端设备的电池电量也会很快被耗尽。通常，将UE向eNB传输信号的方向称为“上行”，将eNB向UE传输信号的方向称为“下行”。
图1示出了一示例性实施例所提供的移动通信系统的结构示意图。该移动通信系统包括：接入网设备120和终端设备140。
接入网设备120具有发送下行参考信号、接收上行参考信号、发送下行数据或指令、接收上行数据或指令的功能。在不同的移动通信系统中，接入网设备120具有相同或相似的功能，但可以具有不同的名称或具体实现形式。可选地，接入网设备120是全球移动通信系统(Global System for Mobile communication，GSM)或码分多址(Code Division Multiple Access，CDMA)中的基站(BTS，Base Transceiver Station)。可选的，接入网设备是通用移动通信系统(Universal Mobile Telecommunications System，UMTS)中的基站(NodeB)。可选的，接入网设备是长期演进(Long Term Evolution，LTE)中的演进型基站(evolutional Node B，eNB或e-NodeB)。在实际组网中，接入网设备120的具体实现形式可以是宏基站、微基站、微微基站、直放站等。本公开实施例对接入网设备120的具体数量和具体位置不做限定。
终端设备140具有发送上行参考信号、接收下行参考信号、发送上行数据或指令、接收下行数据或指令的功能。在不同的移动通信系统中，终端设备140具有相同或相似的功能，但可以具有不同的名称或具体实现形式。可选地，终端设备140可以是订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment，UE)。在实际组网中，终端设备140的具体实现形式可以是手机、平板电脑、智能家电、智能仪器、物联网设备、车联网设备等等。本公开实施例对终端设备140的具体数量和具体位置不做限定。
通常情况下，终端设备140会驻留在某一个接入网设备120所提供的小区中。终端设备140与该接入网设备120进行通信。在本公开实施例中，通信可以是指单方的通信，也 可以是双方的通信。比如，终端设备140向接入网设备120发送上行参考信号，不论接入网设备120是否收到该上行参考信号以及是否回应，即认为终端设备140与接入网设备120进行了通信；又比如，接入网设备120向终端设备140发送下行参考信号，不论终端设备140是否收到该下行参考信号以及是否回应，即认为终端设备140与接入网设备120进行了通信。再比如，终端设备140根据接入网设备120的调度，向接入网设备120发送了上行数据并被成功接收，也认为是终端设备140与接入网设备120进行了通信。
可选地，接入网设备120与终端设备140通过无线载波进行通信。无线载波对应多个频段。在诸如5G的移动通信系统中，无线载波对应有低频频段和至少一个高频频段。示意性地，低频频段是低于6GHZ的频段，高频频段是高于6GHZ的频段，比如，10GHZ频段，20GHZ频段等。高频频段的无线载波在传输时，衰减速度很快。也即，同样能量的信号在低频频段传输时，可传输的距离较长；在高频频段传输时，可传输的距离较短。
每个接入网设备120支持至少一种频段的通信。比如，宏基站支持所有可用频段的通信，第一微基站同时支持低频频段和1个高频频段的通信，第二微基站仅支持1个高频频段的通信。
图2示出了一示例性实施例所提供的接入网设备120的结构示意图。该接入网设备120包括：处理器21、存储器22、发射器23和接收器24。
处理器21与存储器22相连。
处理器21包括一个或者一个以上处理核心，处理器21通过运行软件程序以及单元，从而执行各种功能应用以及信息处理。
存储器22可用于存储软件程序以及单元。存储器22可存储操作系统24、至少一个功能所需的应用程序单元25。
应用程序单元25可以包括处理单元和发送单元。处理单元，被配置为检测终端设备在第一频率段的通信是否满足预定条件；发送单元，被配置为在第一频率段的通信满足预定条件时，向终端设备发送预定信令，预定信令用于指示终端设备在第二频率段发送参考信号；其中，第一频率段不同于第二频率段。
此外，存储器22可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
发射器23包括：调制解调单元和多输入多输出(Multiple Input Multiple Output，MIMO)天线，MIMO天线是支持多天线端口收发的天线。可选地，MIMO天线包括至少两个发射天线。可选地，发射器23用于实现对参考信号的调制解调和发送。
接收器26包括与发射器23相同或类似的结构。可选地，接收器26包括调制解调单元和MIMO天线，MIMO天线包括至少两个接收天线。
本领域技术人员可以理解，图2中所示出的接入网设备120的结构并不构成对接入网设备120的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
图3示出了一示例性实施例所提供的终端设备140的结构示意图。该终端设备140包括：处理器31、存储器32、接收器33和发射器34。
处理器31与存储器32相连。
处理器31包括一个或者一个以上处理核心，处理器31通过运行软件程序以及单元，从而执行各种功能应用以及信息处理。
存储器32可用于存储软件程序以及单元。存储器32还可存储操作系统35、至少一个功能所需的应用程序单元36。
应用程序单元36可以包括处理单元、接收单元和发送单元。处理单元，被配置为与接入网设备在第一频率段进行通信；接收单元，被配置为接收接入网设备发送的预定指令，预定指令是接入网设备在第一频率段的通信满足预设条件时发送的；发送单元，被配置为在第二频率段发送参考信号；其中，第一频率段不同于第二频率段。
或者，应用程序单元36可以包括处理单元，被配置为与第一接入网设备在第一频率段进行通信；处理单元，被配置为检测在第一频率段的通信是否满足预定条件；发送单元，被配置为在第一频率段的通信满足预定条件时，在第二频率段发送参考信号；其中，第一频率段不同于第二频率段。
此外，存储器32可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
接收器33包括：调制解调单元和MIMO天线，MIMO天线是支持多天线端口收发的天线。可选地，MIMO天线包括至少两个接收天线。可选地，接收器33用于实现对参考信号的调制解调和接收。
发射器36包括与接收器33相同或类似的结构。可选地，发射器36包括调制解调单元和MIMO天线，可选地，MIMO天线包括至少两个发射天线。
本领域技术人员可以理解，图3中所示出的终端设备140的结构并不构成发对终端设备140的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
图4示出了一示例性实施例所提供的第一频率段与第二频率段的划分示意图。可选地，本公开实施例所涉及的第一频率段42属于低频频段，第二频率段44属于高频频段，第二频率段44可以不止一个。换句话说，根据频段划分的不同形式，多个第二频率段44可以在频域上相邻，或者，存在两个第二频率段44在频域上是互相间隔的，或者，存在 两个第二频率段44在频域上是互相间隔的，且这两个第二频率段44之间不存在其它的第二频率段。
频率段在不同的实施例中，还可能被称之为频带。每个频率段可以具有相同的频率带宽，比如15KHZ、30kHZ、60kHZ等等。本公开实施例对每个频率段的带宽大小不做限定，视具体实施例而定。
但需要说明的是，虽然本公开实施例以第一频率段属于低频频段，第二频率段属于高频频段来举例说明，但不对此构成限定。在一些可选的实施例中，第一频率段属于高频频段，第二频率段属于低频频段。
图5示出了一示例性实施例所提供的参考信号发送方法的流程图。本公开实施例以该参考信号发送方法应用于图1所示的移动通信系统中来举例说明。该参考信号发送方法包括：
在步骤501中，终端设备与接入网设备在第一频率段进行通信；
可选地，第一频率段属于低频频段。“通信”包括如下情形的至少一种：终端设备向接入网设备发送信号；接入网设备向终端设备发送信号；终端设备向接入网设备发送第一信号，接入网设备基于第一信号向终端设备反馈第二信号；接入网设备向终端设备发送第三信号，终端设备基于第三信号向终端设备反馈第四信号等。可选地，信号是参考信号或者数据等，本公开实施例不对信号的类型或具体内容进行具体限定。
在步骤502中，接入网设备检测终端设备在第一频率段的通信是否满足预定条件；
预定条件是用于对终端设备与接入网设备之间的通信状态进行判断的一种条件。可选地，当第一频率段属于低频频段且第二频率段属于高频频段时，若在第一频率段的通信状态优于预定条件时，触发终端设备在第二频率段的通信。
在步骤503中，接入网设备在第一频率段的通信满足预定条件时，向终端设备发送预定指令；
该预定指令用于指示终端设备在第二频率段发送参考信号。
可选地，该预定指令采用专用信令发送；可选地，该预定指令采用已有信令中的预定比特位发送；可选地，该预定指令采用已有信令的某些特定属性隐含地示出，比如，接入网设备向终端设备调度属于第二频率段的时频资源，从而隐含地示意终端设备在第二频率段发送参考信号。
已有信令是指在2G/3G/4G系统中已经存在的信令。
在步骤504中，终端设备接收接入网设备发送的预定指令，预定指令是接入网设备在第一频率段的通信满足预设条件时发送的；
在步骤505中，终端设备在第二频率段发送参考信号。
在本公开实施例中，终端设备发送的上行参考信号的类型不限于解调参考信号(Demodulation Reference Signal，DMRS)、探测参考信号(Sounding Reference Signal， SRS)和信道状态信息参考信号(CSI Reference Signal，CSI-RS)，还可以由终端设备主动发送新增加的上行参考信号，这些新增加的上行参考信号具有与LTE中的一些下行参考信号相同或相似的功能。比如，将终端设备视为一个“可移动的基站”，由终端设备发送小区特定参考信号(Cell-specific Reference Signal，CRS)。所以，本公开实施例中的上行参考信号是指终端设备所发送的任意可能的参考信号，这些参考信号可以用于信道估计或者信道状态测量等。
可选地，接入网设备接收终端设备在第二频率段发送的参考信号，根据该参考信号对第二频率段中的信道进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过终端设备与接入网设备在第一频率段的通信满足预设条件时，由终端设备在第二频率段发送参考信号；解决了在组网环境比较复杂时，接入网设备发送参考信号的效率低下的问题；达到了不仅可以由终端设备来发送参考信号，而且视第一频率段的具体通信情况，选择性地在第二频率段发送参考信号，提高了终端设备发送参考信号的效率，降低了终端设备在第二频率段发送参考信号时所需要的电量消耗的效果。
可选地，“在第一频率段进行通信”，可以被认为是使用属于第一频率段的时频资源来进行通信；可选地，“在第二频率段发送参考信号”，可以被认为是使用属于第二频率段的时频资源来进行通信。
可选的，时域资源是符号(symbol)、符号组(symbol group)、时隙(slot)或子帧(subframe)，其中，符号是一个子载波所在的频域为15kHz的LTE系统的符号，或者，符号是一个子载波所在的频域大于15kHz的通信系统的符号；时隙是一个子载波所在的频域为15kHz的LTE系统的时隙，或者，是一个子载波所在的频域大于15kHz的通信系统的时隙，长度可以小于0.5ms；子帧是一个子载波所在的频域为15kHz的LTE系统的子帧，或者是一个子载波所在的频域大于15kHz的通信系统的子帧，长度可以小于1ms，本实施例对此不作限定。如，一个子载波所在的频域大于15kHz的频域可以为30kHz，60kHz，120kHz，本实施例对此不作限定
可选的，频域资源是短物理资源块(Short Physical Resource Block，SPRB)，短物理资源块组(Short Physical Resource Block Group，SRBG)，短虚拟资源块(Short Virtul Resource Block，SVRB)，子载波或子载波组。其中，SPRB和SVRB分别为不同含义的资源分配的基本单位。SPRB为频域上12个连续的子载波，时域上是一个传输时间长度的资源，传输时间长度可以从1个符号至14个符号中的任意符号数，在集中式资源分配时SVRB与SPRB的定义相同，在分布式资源分配时SVRB与SPRB有一定的对应关系。SPRB索引为SPRB索引，SVRB索引为SVRB索引，因此，该SPRB索引和该SVRB索引可以不同。SRBG可包括多个SPRB，SRBG中包括的SPRB的个数根据终端设备的带宽确定或者由网络设备指示得到。其中，SPRB索引可以为SPRB的编号，SRBG索引可以为SRBG的编号，SVRB索引可以为SVRB的编号，子载波索引可以为子载波的编号，子载波组索 引可以为子载波组的编号。子载波组包括至少一个子载波，这里的一个子载波所在的频域可以是等于或大于15kHz的。
可选地，第一频率段属于低频频段，第二频率段属于高频频段。也即，第一频率段的频率上限低于第二频率段的频率下限。
可选地，第二频率段为n个，每个第二频率段对应各自的预定条件。n为正整数。
在第一种可能的实现方式中，预定条件包括如下条件中的至少一种：
第一信号的信号强度大于预设强度；
第一信号的接收功率大于预设功率；
第一信号的接收质量大于预设质量；
第一信号的误码率低于预设值；
其中，第一信号是终端设备在第一频率段发送的信号。
在第二种可能的实现方式中，预定条件包括:
终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；或，终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率段的接入网设备。
在第三种可能的实现方式中，预定条件包括：
接收第一信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；或，接收第一信号时所使用的MIMO天线的天线位置符合预设位置；或，接收第一信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
其中，第一信号是终端设备在第一频率段发送的信号，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
在第四种可能的实现方式中，预定条件包括：
第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件；或，第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第二条件，且第一接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第三条件；
其中，信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
在第五种可能的实现方式中，预定条件包括：
终端设备接收的第一定位信号的信号接收强度低于第一强度；或，终端设备接收的第一定位信号的信号接收强度低于第一强度，且第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；或，终端设备接收的第一定位信号的信号接收强度与第一接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值；
其中，第一定位信号是终端在使用第一频率段进行通信时接收的定位信号。
针对预定条件的第一种可能的实现方式，图6示出了另一示例性实施例所提供的参考信号发送方法的流程图。本公开实施例以第一信号为第一参考信号来举例说明。该参考信号发送方法包括：
在步骤601中，终端设备在第一频率段向接入网设备发送第一参考信号；
可选地，第一频率段属于低频频段。
在步骤602中，接入网设备检测第一参考信号的信号强度是否大于预设强度；
在步骤603中，接入网设备在第一参考信号的信号强度大于预设强度时，向终端设备发送预定指令，该预定指令用于指示终端设备在第二频率段发送第二参考信号；
可选地，接入网设备在第一频率段向终端设备发送预定指令。对应地，终端设备接收接入网设备发送的预定指令。
在步骤604中，终端设备在第二频率段向接入网设备发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
在步骤605中，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
需要说明的是，本实施例中的接入网设备可以是终端设备准备驻留或正在驻留的小区所对应的接入网设备。
综上所述，本实施例提供的参考信号发送方法，通过在第一频率段发送的第一参考信号的信号强度大于预设强度时，由接入网设备指示终端设备在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
作为一种可替代的实现方式，步骤602可被替代为：接入网设备检测第一参考信号的接收功率(Reference Signal Receiver Power，RSRP)是否大于预设功率；作为另一种可替代的实现方式，步骤602可被替代为：接入网设备检测第一参考信号的接收质量(Reference Signal Receiving Quality，RSRQ)是否大于预设质量。作为再一种可替代的实现方式，上述第一参考信号被替代为第一信号，第一信号是终端设备在第一频率段发送的信号，可以是上行参考信号也可以是数据信号，则步骤602可被替代为：接入网设备检测第一信号的误码率是否低于预设值。
针对预定条件的第二种实现方式，图7A示出了另一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤701中，终端设备在使用第一频率段进行通信时获取第一地理位置；
可选地，第一频率段属于低频频段。终端设备在使用第一频率段与接入网设备进行通 信时，获取自身的第一地理位置。
可选地，终端设备通过全球定位系统(Global Positioning System，GPS)获取自身的第一地理位置。本实施例对定位方式不做限定，还可以是通过北斗系统定位、无线接入点定位等。
在步骤702中，终端设备使用第一频率段向接入网设备发送第一地理位置；
对应地，接入网设备接收终端设备发送的第一地理位置。
可选地，本实施例不限定步骤702的发送方式，若终端设备还存在除第一频率段之外的其它途径将第一地理位置发送给接入网设备，可作为步骤702的等同替代实现方式。
在步骤703中，接入网设备检测终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离是否小于预设阈值；
接入网设备预先存储了自身的第二地理位置。可选地，接入网设备还存储了其它接入网设备的第二地理位置。每个接入网设备的第二地理位置通常是固定不变的。
预定接入网设备是支持第二频率段的接入网设备。预定接入网设备可以是步骤701和步骤702中的接入网设备，也可以是与步骤701和步骤702中的接入网设备所不同的接入网设备。
在步骤704中，接入网设备在第一地理位置和第二地理位置之间的距离小于预设阈值时，向终端设备发送预定指令，该预定指令用于指示终端设备在第二频率段发送第二参考信号；
可选地，接入网设备在第一频率段向终端设备发送预定指令。
在步骤。
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
在步骤706中，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过终端设备的第一地理位置和接入网设备的第二地理位置之间的距离小于预设阈值时，由接入网设备指示终端设备在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
结合参考图7B，宏基站72同时支持第一频率段和第二频率段，宏基站72接收UE74在第一频率段发送的第一地理位置，当该第一地理位置与宏基站72的第二地理位置之间的距离d1小于预设阈值时，宏基站72向UE74发送预定指令，该预定指令指示UE74在第二频率段发送上行参考信号。
结合参考图7C，宏基站72同时支持第一频率段和第二频率段，位于室内的微基站76 支持第二频率段。宏基站72接收UE74在第一频率段发送的第一地理位置，当该第一地理位置与微基站76的第二地理位置之间的距离d2小于预设阈值时，宏基站72向UE74发送预定指令，该预定指令指示UE74在第二频率段发送上行参考信号。
作为一种可替代的实现方式，步骤703被替代为：接入网设备检测终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域。通常，预定区域是以预定接入网设备为中心所确定的区域，预定区域还可被设计为不规则区域，或者，与室内布局所对应的区域。从而达到终端设备位于室内时，触发在第二频率段发送上行参考信号的效果。
针对预定条件的第三种可能的实现方式，图8示出了另一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤801中，终端设备在第一频率段向接入网设备发送第一信号；
可选地，第一频率段属于低频频段。第一信号是终端设备在第一频率段发送的信号。
在步骤802中，接入网设备检测接收第一信号时所使用的多输入多输出(Multiple-Input Multiple-Output，MIMO)天线的天线数量超过预设数量；
比如，接入网设备的MIMO天线总数为32根，预设数量是20根，则接入网设备检测接收第一信号时所使用的MIMO天线的天线数量是否超过20根。
在步骤803中，接入网设备在接收第一信号时所使用的MIMO天线的天线数量超过预设数量时，向终端设备发送预定指令，该预定指令用于指示终端设备在第二频率段发送第二参考信号；
可选地，接入网设备在第一频率段向终端设备发送预定指令。
在步骤804中，终端设备在第二频率段向接入网设备发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
在步骤805中，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
需要说明的是，本实施例中的接入网设备可以是终端设备准备驻留或正在驻留的小区所对应的接入网设备。
综上所述，本实施例提供的参考信号发送方法，通过在被使用的MIMO天线的根数大于预设数量，由接入网设备指示终端设备在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
作为一种可替代的实现方式，步骤802可被替代为：接入网设备检测接收第一信号时所使用的MIMO天线的天线位置符合预设位置，天线位置是指所使用的MIMO天线相对 于MIMO天线阵列的位置。在一个示意性的例子中，接入网设备是宏基站，宏基站所使用的MIMO天线阵列沿从上往下的方向呈弧形，当被使用的MIMO天线相对于MIMO天线阵列的位置位于上部时，宏基站向终端设备发送预定指令。
作为另一种可替代的实现方式，步骤802可被替代为：接入网设备检测接收第一信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置。
针对预定条件的第四种可能的实现方式，图9A示出了另一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤901中，终端设备在第一频率段发送第一参考信号；
可选地，第一频率段属于低频频段。第一参考信号是终端设备在第一频率段发送的参考信号。
在步骤902中，第二接入网设备将接收到的第一参考信号的信号参数发送给第一接入网设备；
可选地，第一接入网设备是终端设备准备驻留或正在驻留的小区所对应的接入网设备。
由于在复杂组网的环境下，接入网设备的分布是非常密集的，终端设备在第一频率段发送参考信号时，存在多个接入网设备都能接收到第一参考信号。但由于每个接入网设备离终端设备的距离远近、障碍物多少各不相同，所以每个接入网设备接收到第一参考信号时的信号参数各不相同，这些信号参数可以综合起来对终端设备所处的位置进行预测。
可选地，信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
可选地，第二接入网设备直接将接收到的第一参考信号的信号参数发送给第一接入网设备；可选地，第二接入网设备通过核心网网元将接收到的第一参考信号的信号参数发送给第一接入网设备。
在步骤903中，第一接入网设备检测第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件；
可选地，第二接入网设备为至少两个，第一条件是终端设备所处的地理位置相对于至少两个第二接入网设备的地理位置处于预设区域时所对应的条件。
示意性的参考图9B，第二接入网设备为三个，当终端设备90位于三个第二接入网设备中靠近左上角的第二接入网设备92时，左上角的第二接入网设备92接收到的第一参考信号的信号强度大于强度A；右上角的第二接入网设备94接收到的第一参考信号的信号强度小于强度A且大于强度B；下方的第二接入网设备96接收到的第一参考信号的信号强度小于强度A且大于强度B。若第一接入网设备98检测到三个第二接入网设备接收到的终端设备在第一频率段发送的第一参考信号的信号参数符合第一条件，则终端设备90有极大可能位于图9B所示的区域中。
若左上角的第二接入网设备是支持第二频率段的接入网设备，则第一接入网设备会触 发终端设备在第二频率段发送第二参考信号。
在步骤904中，第一接入网设备在第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件时，向终端设备发送预定指令，该预定指令用于指示终端设备在第二频率段发送第二参考信号；
可选地，第一接入网设备在第一频率段向终端设备发送预定指令。
在步骤905中，终端设备在第二频率段发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
在步骤906中，第一接入网设备和/或第二接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，第一接入网设备和/或第二接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过在第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件时，由接入网设备指示终端设备在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
作为一种可替代的实现方式，步骤903可被替代为：第一接入网设备检测第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第二条件，且第一接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第三条件。也即，第一接入网设备综合自身和其它接入网设备的接收情况，对终端设备的所处区域进行预测。
针对预定条件的第五种可能的实现方式，图10示出了一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤1001中，终端设备接收第一定位信号；
第一定位信号是终端在使用第一频率段进行通信时接收的定位信号。
可选地，第一频率段属于低频频段。
在步骤1002中，终端设备将接收到的第一定位信号的信号接收强度发送给接入网设备；
可选地，接入网设备是终端设备准备驻留或正在驻留的小区所对应的接入网设备。
对应地，接入网设备接收终端设备发送的第一定位信号的信号接收强度。
在步骤1003中，接入网设备检测终端设备接收的第一定位信号的信号接收强度是否低于第一强度；
基于高频频段的参考信号测量将会大量地适用于室内环境，当处于室内环境时，终端 设备接收到的第一定位信号的信号接收强度会减弱，所以接入网设备检测终端设备接收的第一定位信号的信号接收强度是否低于第一强度，以判断终端设备是否位于室内环境。
若终端设备和接入网设备均处于室内环境，则有更大的可能性需要终端设备启动高频频段的参考信号的发送过程。
在步骤1004中，接入网设备在终端设备接收到的第一定位信号的信号接收强度低于第一强度时，向终端设备发送预定指令，该预定指令用于指示终端设备在第二频率段发送第二参考信号；
可选地，接入网设备在第一频率段向终端设备发送预定指令。
在步骤1005中，终端设备在第二频率段向接入网设备发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
在步骤1006中，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过在终端设备接收的第一定位信号的信号接收强度低于第一强度时，由接入网设备指示终端设备在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
在一种可替代的实现方式中，步骤1003被替代实现成为：接入网设备检测终端设备接收的第一定位信号的信号接收强度是否低于第一强度，且接入网设备接收的第二定位信号的信号接收强度低于第二强度；
在另一种可替代的实现方式中，步骤1003被替代实现成为：接入网设备检测终端设备接收的第一定位信号的信号接收强度与接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值。
需要说明的是，上述实施例中，均以接入网设备对预定条件进行检测，由接入网设备根据检测结果向终端设备发送预定指令为例来举例说明。在下述一些可能的实施例中，上述预定条件的检测过程可以由终端设备来执行。
图11示出了一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤1101中，终端设备与第一接入网设备在第一频率段进行通信；
可选地，第一频率段属于低频频段。“通信”包括如下情形的至少一种：终端设备向接入网设备发送信号；接入网设备向终端设备发送信号；终端设备向接入网设备发送第一 信号，接入网设备基于第一信号向终端设备反馈第二信号；接入网设备向终端设备发送第三信号，终端设备基于第三信号向终端设备反馈第四信号等。可选地，信号是参考信号或者数据等，本公开实施例不对信号的类型或具体内容进行具体限定。
在步骤1102中，终端设备检测在第一频率段的通信是否满足预定条件；
预定条件是用于对终端设备与接入网设备之间的通信状态进行判断的一种条件。可选地，当第一频率段属于低频频段且第二频率段属于高频频段时，若在第一频率段的通信状态优于预定条件时，触发终端设备在第二频率段的通信。
在步骤1103中，终端设备在第一频率段的通信满足预定条件时，在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。可选地，第二频率段属于高频频段。
在本公开实施例中，终端设备发送的上行参考信号的类型不限于解调参考信号(Demodulation Reference Signal，DMRS)、探测参考信号(Sounding Reference Signal，SRS)和信道状态信息参考信号(CSI Reference Signal，CSI-RS)，还可以由终端设备主动发送新增加的上行参考信号，这些新增加的上行参考信号具有与LTE中的一些下行参考信号相同或相似的功能。比如，将终端设备视为一个“可移动的基站”，由终端设备发送小区特定参考信号(Cell-specific Reference Signal，CRS)。所以，本公开实施例中的上行参考信号是指终端设备所发送的任意可能的参考信号，这些参考信号可以用于信道估计或者信道状态测量等。
可选地，接入网设备接收终端设备在第二频率段发送的参考信号，根据该参考信号对第二频率段中的信道进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过终端设备与接入网设备在第一频率段的通信满足预设条件时，由终端设备在第二频率段发送参考信号；解决了在组网环境比较复杂时，接入网设备发送参考信号的效率低下的问题；达到了不仅可以由终端设备来发送参考信号，而且视第一频率段的具体通信情况，选择性地在第二频率段发送参考信号，提高了终端设备发送参考信号的效率，降低了终端设备在第二频率段发送参考信号时所需要的电量消耗的效果。
可选地，“在第一频率段进行通信”，可以被认为是使用属于第一频率段的时频资源来进行通信；可选地，“在第二频率段发送参考信号”，可以被认为是使用属于第二频率段的时频资源来进行通信。
在第一种可能的实现方式中，预定条件包括如下条件中的至少一种：
第二信号的信号强度大于预设强度；
第二信号的接收功率大于预设功率；
第二信号的接收质量大于预设质量；；
第二信号的误码率低于预设值；
其中，第二信号是第一接入网设备在第一频率段发送的信号。
在第二种可能的实现方式中，预定条件包括:
终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
或，
终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率端的接入网设备。
在第三种可能的实现方式中，预定条件包括：
终端设备在第一频率段发送信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
或，
终端设备在第一频率段发送信号时所使用的MIMO天线的天线位置符合预设位置；
或，
终端设备在第一频率段发送信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
其中，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
在第四种可能的实现方式中，预定条件包括：
终端设备接收的第一定位信号的信号接收强度低于第一强度；
或，
终端设备接收的第一定位信号的信号接收强度低于第一强度，且第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
或，
终端设备接收的第一定位信号的信号接收强度与第一接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值；
其中，第一定位信号是终端设备在使用第一频率段进行通信时接收的定位信号。
针对预定条件的第一种可能的实现方式，图12示出了一示例性实施例所提供的参考信号发送方法的流程图。本公开实施例以第二信号为第二参考信号为例来举例说明。该参考信号发送方法包括：
在步骤1201中，接入网设备在第一频率段向终端设备发送第一参考信号；
可选地，第一频率段属于低频频段。
在步骤1202中，终端设备检测第一参考信号的信号强度是否大于预设强度；
在步骤1203中，终端设备在第一参考信号的信号强度大于预设强度时，在第二频率段向接入网设备发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上 限。
对应地，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
需要说明的是，本实施例中的接入网设备可以是终端设备准备驻留或正在驻留的小区所对应的接入网设备。
综上所述，本实施例提供的参考信号发送方法，通过在第一频率段发送的第一参考信号的信号强度大于预设强度时，由终端设备自行决策在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
作为一种可替代的实现方式，步骤1202可被替代为：终端设备检测第一参考信号的接收功率(Reference Signal Receiver Power，RSRP)是否大于预设功率；作为另一种可替代的实现方式，步骤1202可被替代为：终端设备检测第一参考信号的接收质量(Reference Signal Receiving Quality，RSRQ)是否大于预设质量。作为再一种可替代的实现方式，上述第一参考信号被替代为第二信号，第二信号是接入网设备在第一频率段发送的信号，可以是下行参考信号也可以是数据信号，则步骤1202可被替代为：终端设备检测第二信号的误码率是否低于预设值。
针对预定条件的第二种可能的实现方式，图13示出了另一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤1301中，终端设备在使用第一频率段进行通信时获取第一地理位置；
可选地，第一频率段属于低频频段。终端设备在使用第一频率段与接入网设备进行通信时，获取自身的第一地理位置。
可选地，终端设备通过全球定位系统(Global Positioning System，GPS)获取自身的第一地理位置。本实施例对定位方式不做限定，还可以是通过北斗系统定位、无线接入点定位等。
在步骤1302中，终端设备获取预定接入网设备的第二地理位置；
可选地，终端设备预先存储有预定接入网设备的第二地理位置，每个接入网设备的第二地理位置通常是固定不变的。
可选地，终端设备使用第一频率段向预定接入网设备发送地理位置询问请求，接收接入网设备反馈的第二地理位置。
可选地，本实施例不限定步骤1302的发送方式，若终端设备还存在其它途径获取预定接入网设备的第二地理位置，可作为步骤1302的等同替代实现方式。
在步骤1303中，终端设备检测第一地理位置与预定接入网设备的第二地理位置之间的距离是否小于预设阈值；
预定接入网设备是支持第二频率段的接入网设备。预定接入网设备可以是终端设备当前驻留或通信的接入网设备，也可以是与终端设备当前驻留或通信的接入网设备所不同的其它接入网设备。
在步骤1304中，终端设备在第一地理位置和第二地理位置之间的距离小于预设阈值时，在第二频率段发送第二参考信号。
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
对应地，预定接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，预定接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过终端设备的第一地理位置和接入网设备的第二地理位置之间的距离小于预设阈值时，由终端设备自行决策在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
作为一种可替代的实现方式，步骤1303被替代为：终端设备检测在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域。通常，预定区域是以预定接入网设备为中心所确定的区域，预定区域还可被设计为不规则区域，或者，与室内布局所对应的区域。从而达到终端设备位于室内时，触发在第二频率段发送上行参考信号的效果。
针对预定条件的第三种可能的实现方式，图14示出了另一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤1401中，终端设备在第一频率段向接入网设备发送第一信号；
可选地，第一频率段属于低频频段。第一信号是终端设备在第一频率段发送的信号。
在步骤1402中，终端设备检测发送第一信号时所使用的MIMO天线的天线数量超过预设数量；
比如，终端设备的MIMO天线总数为32根，预设数量是20根，则终端设备检测发送第一信号时所使用的MIMO天线的天线数量是否超过20根。
在步骤1403中，终端设备在发送第一信号时所使用的MIMO天线的天线数量超过预设数量时，在第二频率段向接入网设备发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
对应地，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
需要说明的是，本实施例中的接入网设备可以是终端设备准备驻留或正在驻留的小区所对应的接入网设备。
综上所述，本实施例提供的参考信号发送方法，通过在被使用的MIMO天线的根数大于预设数量，由终端设备自行决策在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
作为一种可替代的实现方式，步骤1402可被替代为：终端设备检测发送第一信号时所使用的MIMO天线的天线位置符合预设位置，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。作为另一种可替代的实现方式，步骤1402可被替代为：终端设备检测发送第一信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置。
针对预定条件的第四种可能的实现方式，图15示出了一示例性实施例所提供的参考信号发送方法的流程图。该参考信号发送方法包括：
在步骤1501中，终端设备接收第一定位信号；
第一定位信号是终端在使用第一频率段进行通信时接收的定位信号。
可选地，第一频率段属于低频频段。
在步骤1502中，终端设备检测接收的第一定位信号的信号接收强度是否低于第一强度；
基于高频频段的参考信号测量将会大量地适用于室内环境，当处于室内环境时，终端设备接收到的第一定位信号的信号接收强度会减弱，所以接入网设备检测终端设备接收的第一定位信号的信号接收强度是否低于第一强度，以判断终端设备是否位于室内环境。
若终端设备和接入网设备均处于室内环境，则有更大的可能性需要终端设备启动高频频段的参考信号的发送过程。
在步骤1503中，终端设备在接收到的第一定位信号的信号接收强度低于第一强度时，在第二频率段向接入网设备发送第二参考信号；
可选地，第二频率段属于高频频段，第二频率段的频率下限高于第一频率段的频率上限。
对应地，接入网设备接收终端设备在第二频率段发送的第二参考信号。
可选地，接入网设备根据第二参考信号进行信道估计或信道状态信息测量。
综上所述，本实施例提供的参考信号发送方法，通过在终端设备接收的第一定位信号的信号接收强度低于第一强度时，由终端设备自行决策在第二频率段发送第二参考信号，使得终端设备并不需要一直在第二频率段发送第二参考信号，而是根据第一频率段的通信状态优于预定条件时，选择性地在第二频率段发送第二参考信号，从而提高了终端设备发 送第二参考信号的效率，并且节省了终端设备在发送第二参考信号时所需要的电量消耗。
在一种可替代的实现方式中，终端设备能够获取到接入网设备的第二定位信号的信号接收强度，步骤1502被替代实现成为：终端设备检测接收的第一定位信号的信号接收强度是否低于第一强度，且接入网设备接收的第二定位信号的信号接收强度低于第二强度；
或，在另一种可替代的实现方式中，步骤1502被替代实现成为：终端设备检测接收的第一定位信号的信号接收强度与接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值。
需要说明的一点是，上面的各个实施例还可以两两组合或者若干个组合，从而成为新的实施例。例如，预定条件包括：终端设备的第一地理位置与接入网设备的第二地理位置小于预设距离，且终端设备接收到的第一定位信号的信号强度小于第一强度。诸如此类，为本领域技术人员根据上述实施例和举例所易于思及的内容，不再一一赘述。
需要说明的另一点是，若终端设备上对应第二频率段的天线和/或功放模块是独立的，则终端设备可以在接收到预定指令，或者自行判断出满足预定条件时，激活对应第二频率段的天线和/或功放模块为工作状态。
需要说明的再一点是，上述各个方法实施例中有关终端设备的步骤，可以由图3所述的终端设备中的处理器(通信芯片)运行位于存储器中的一个或一个以上的程序来执行；上述各个方法实施例中有关接入网设备的步骤，可以由图2所示的接入网设备中的处理器运行位于存储器中的一个或一个以上的程序来置信。
图16示出了一示例性实施例所提供的信令发送装置的结构方框图。该信令发送装置可以通过专用硬件电路，或，硬件与软件的组合实现成为接入网设备的全部或一部分。该信令发送装置包括：
处理模块1620，被配置为检测终端设备在第一频率段的通信是否满足预定条件；
发送模块1640，被配置为在第一频率段的通信满足预定条件时，向终端设备发送预定信令，预定信令用于指示终端设备在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
可选地，预定条件包括如下条件中的至少一种：第一信号的信号强度大于预设强度；第一信号的接收功率大于预设功率；第一信号的接收质量大于预设质量；第一信号的误码率低于预设值；其中，第一信号是终端设备在第一频率段发送的信号。
可选地，预定条件包括:终端设备在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；或，终端设备在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；
其中，预定接入网设备是支持第二频率段的接入网设备。
可选地，预定条件包括：接收第一信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；或，接收第一信号时所使用的MIMO天线的天线位置符合预设位置；或，接收第一信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；其中，第一信号是终端设备在第一频率段发送的信号，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
可选地，预定条件包括：第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第一条件；或，第二接入网设备接收到的终端设备在第一频率段发送的信号的信号参数符合第二条件，且信令发送装置接收到的终端设备在第一频率段发送的信号的信号参数符合第三条件；其中，信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
可选地，预定条件包括：终端设备接收的第一定位信号的信号接收强度低于第一强度；或，终端设备接收的第一定位信号的信号接收强度低于第一强度，且信令发送装置接收的第二定位信号的信号接收强度低于第二强度；
或，终端设备接收的第一定位信号的信号接收强度与信令发送装置接收的第二定位信号的信号接收强度之间的差值小于预设差值；其中，第一定位信号是终端在使用第一频率段进行通信时接收的定位信号。
可选地，第一频率段的频率上限低于第二频率段的频率下限。
可选地，第二频率段为n个，每个第二频率段对应各自的预定条件。
可选地，参考信号包括如下参考信号中的至少一种：用于终端设备的特定参考信号、DMRS、SRS、CSI-RS。
图17示出了一示例性实施例所提供的参考信号发送装置的结构方框图。该参考信号发送装置可以通过专用硬件电路，或，硬件与软件的组合实现成为终端设备的全部或一部分。该参考信号发送装置包括：
处理模块1720，被配置为与接入网设备在第一频率段进行通信；
接收模块1740，被配置为接收接入网设备发送的预定指令，预定指令是接入网设备在第一频率段的通信满足预设条件时发送的；
发送模块1760，被配置为在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
可选地，第一频率段的频率上限低于第二频率段的频率下限。
可选地，第二频率段为n个，每个第二频率段对应各自的预定条件。
可选地，参考信号包括如下参考信号中的至少一种：
用于终端设备的特定参考信号、DMRS、SRS、CSI-RS。
图18示出了一示例性实施例所提供的参考信号发送装置的结构方框图。该参考信号发送装置可以通过专用硬件电路，或，硬件与软件的组合实现成为终端设备的全部或一部分。该参考信号发送装置包括：
处理模块1720，被配置为与第一接入网设备在第一频率段进行通信；
处理模块1720，被配置为检测在第一频率段的通信是否满足预定条件；
发送模块1760，被配置为在第一频率段的通信满足预定条件时，在第二频率段发送参考信号；
其中，第一频率段不同于第二频率段。
可选地，预定条件包括如下条件中的至少一种：第二信号的信号强度大于预设强度；第二信号的接收功率大于预设功率；第二信号的接收质量大于预设质量；第二信号的误码率低于预设值；其中，第二信号是第一接入网设备在第一频率段发送的信号。
可选地，预定条件包括:参考信号发送装置在使用第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；或，参考信号发送装置在使用第一频率段进行通信时的第一地理位置属于预定区域，预定区域是基于预定接入网设备所确定的区域；其中，预定接入网设备是支持第二频率端的接入网设备。
可选地，预定条件包括：参考信号发送装置在第一频率段发送信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；或，参考信号发送装置在第一频率段发送信号时所使用的MIMO天线的天线位置符合预设位置；或，参考信号发送装置在第一频率段发送信号时所使用的MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；其中，天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
可选地，预定条件包括：参考信号发送装置接收的第一定位信号的信号接收强度低于第一强度；或，参考信号发送装置接收的第一定位信号的信号接收强度低于第一强度，且第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；或，参考信号发送装置接收的第一定位信号的信号接收强度与第一接入网设备接收的第二定位信号的信号接收强度之间的差值小于预设差值；其中，第一定位信号是参考信号发送装置在使用第一频率段进行通信时接收的定位信号。
可选地，第一频率段的频率上限低于第二频率段的频率下限。
可选地，第二频率段为n个，每个第二频率段对应各自的预定条件。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可 以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (47)

  1. 一种信令发送方法，其特征在于，所述方法包括：
    第一接入网设备检测终端设备在第一频率段的通信是否满足预定条件；
    所述第一接入网设备在所述第一频率段的通信满足所述预定条件时，向所述终端设备发送预定信令，所述预定信令用于指示所述终端设备在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  2. 根据权利要求1所述的方法，其特征在于，所述预定条件包括如下条件中的至少一种：
    第一信号的信号强度大于预设强度；
    所述第一信号的接收功率大于预设功率；
    所述第一信号的接收质量大于预设质量；
    所述第一信号的误码率低于预设值；
    其中，所述第一信号是所述终端设备在所述第一频率段发送的信号。
  3. 根据权利要求1所述的方法，其特征在于，所述预定条件包括:
    所述终端设备在使用所述第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
    或，
    所述终端设备在使用所述第一频率段进行通信时的所述第一地理位置属于预定区域，所述预定区域是基于所述预定接入网设备所确定的区域；
    其中，所述预定接入网设备是支持所述第二频率段的接入网设备。
  4. 根据权利要求1所述的方法，其特征在于，所述预定条件包括：
    接收第一信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
    或，
    接收所述第一信号时所使用的所述MIMO天线的天线位置符合预设位置；
    或，
    接收所述第一信号时所使用的所述MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
    其中，所述第一信号是所述终端设备在所述第一频率段发送的信号，所述天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
  5. 根据权利要求1所述的方法，其特征在于，所述预定条件包括：
    第二接入网设备接收到的所述终端设备在所述第一频率段发送的信号的信号参数符 合第一条件；
    或，
    所述第二接入网设备接收到的所述终端设备在所述第一频率段发送的信号的信号参数符合第二条件，且所述第一接入网设备接收到的所述终端设备在所述第一频率段发送的信号的信号参数符合第三条件；
    其中，所述信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
  6. 根据权利要求1所述的方法，其特征在于，所述预定条件包括：
    所述终端设备接收的第一定位信号的信号接收强度低于第一强度；
    或，
    所述终端设备接收的所述第一定位信号的信号接收强度低于所述第一强度，且所述第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
    或，
    所述终端设备接收的所述第一定位信号的信号接收强度与所述第一接入网设备接收的所述第二定位信号的信号接收强度之间的差值小于预设差值；
    其中，所述第一定位信号是所述终端在使用所述第一频率段进行通信时接收的定位信号。
  7. 根据权利要求1至6任一所述的方法，其特征在于，所述第一频率段的频率上限低于所述第二频率段的频率下限。
  8. 根据权利要求1至6任一所述的方法，其特征在于，所述第二频率段为n个，每个所述第二频率段对应各自的所述预定条件。
  9. 根据权利要求1至6任一所述的方法，其特征在于，所述参考信号包括如下参考信号中的至少一种：
    用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
  10. 一种参考信号发送方法，其特征在于，所述方法包括：
    终端设备与接入网设备在第一频率段进行通信；
    所述终端设备接收所述接入网设备发送的预定指令，所述预定指令是所述接入网设备在所述第一频率段的所述通信满足预设条件时发送的；
    所述终端设备在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  11. 根据权利要求10所述的方法，其特征在于，所述第一频率段的频率上限低于所述第二频率段的频率下限。
  12. 根据权利要求10或11所述的方法，其特征在于，所述第二频率段为n个，每个所述第二频率段对应各自的所述预定条件。
  13. 根据权利要求10或11所述的方法，其特征在于，所述参考信号包括如下参考信号中的至少一种：
    用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
  14. 一种参考信号发送方法，其特征在于，所述方法包括：
    终端设备与第一接入网设备在第一频率段进行通信；
    所述终端设备检测在所述第一频率段的通信是否满足预定条件；
    所述终端设备在所述第一频率段的通信满足所述预定条件时，在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  15. 根据权利要求14所述的方法，其特征在于，所述预定条件包括如下条件中的至少一种：
    第二信号的信号强度大于预设强度；
    所述第二信号的接收功率大于预设功率；
    所述第二信号的接收质量大于预设质量；；
    所述第二信号的误码率低于预设值；
    其中，所述第二信号是所述第一接入网设备在所述第一频率段发送的信号。
  16. 根据权利要求14所述的方法，其特征在于，所述预定条件包括:
    所述终端设备在使用所述第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
    或，
    所述终端设备在使用所述第一频率段进行通信时的所述第一地理位置属于预定区域，所述预定区域是基于所述预定接入网设备所确定的区域；
    其中，所述预定接入网设备是支持所述第二频率端的接入网设备。
  17. 根据权利要求14所述的方法，其特征在于，所述预定条件包括：
    所述终端设备在所述第一频率段发送信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
    或，
    所述终端设备在所述第一频率段发送所述信号时所使用的所述MIMO天线的天线位置符合预设位置；
    或，
    所述终端设备在所述第一频率段发送所述信号时所使用的所述MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
    其中，所述天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
  18. 根据权利要求14所述的方法，其特征在于，所述预定条件包括：
    所述终端设备接收的第一定位信号的信号接收强度低于第一强度；
    或，
    所述终端设备接收的所述第一定位信号的信号接收强度低于所述第一强度，且所述第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
    或，
    所述终端设备接收的所述第一定位信号的信号接收强度与所述第一接入网设备接收的所述第二定位信号的信号接收强度之间的差值小于预设差值；
    其中，所述第一定位信号是所述终端设备在使用所述第一频率段进行通信时接收的定位信号。
  19. 根据权利要求14至18任一所述的方法，其特征在于，所述第一频率段的频率上限低于所述第二频率段的频率下限。
  20. 根据权利要求14至18任一所述的方法，其特征在于，所述第二频率段为n个，每个所述第二频率段对应各自的所述预定条件。
  21. 一种信令发送装置，其特征在于，所述装置包括：
    处理模块，被配置为检测终端设备在第一频率段的通信是否满足预定条件；
    发送模块，被配置为在所述第一频率段的通信满足所述预定条件时，向所述终端设备发送预定信令，所述预定信令用于指示所述终端设备在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  22. 根据权利要求21所述的装置，其特征在于，所述预定条件包括如下条件中的至少一种：
    第一信号的信号强度大于预设强度；
    所述第一信号的接收功率大于预设功率；
    所述第一信号的接收质量大于预设质量；
    所述第一信号的误码率低于预设值；
    其中，所述第一信号是所述终端设备在所述第一频率段发送的信号。
  23. 根据权利要求21所述的装置，其特征在于，所述预定条件包括:
    所述终端设备在使用所述第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
    或，
    所述终端设备在使用所述第一频率段进行通信时的所述第一地理位置属于预定区域，所述预定区域是基于所述预定接入网设备所确定的区域；
    其中，所述预定接入网设备是支持所述第二频率段的接入网设备。
  24. 根据权利要求21所述的装置，其特征在于，所述预定条件包括：
    接收第一信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
    或，
    接收所述第一信号时所使用的所述MIMO天线的天线位置符合预设位置；
    或，
    接收所述第一信号时所使用的所述MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
    其中，所述第一信号是所述终端设备在所述第一频率段发送的信号，所述天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
  25. 根据权利要求21所述的装置，其特征在于，所述预定条件包括：
    第二接入网设备接收到的所述终端设备在所述第一频率段发送的信号的信号参数符合第一条件；
    或，
    所述第二接入网设备接收到的所述终端设备在所述第一频率段发送的信号的信号参数符合第二条件，且所述信令发送装置接收到的所述终端设备在所述第一频率段发送的信号的信号参数符合第三条件；
    其中，所述信号参数包括：信号强度、信号功率、信号质量和信号误码率中的至少一种。
  26. 根据权利要求21所述的装置，其特征在于，所述预定条件包括：
    所述终端设备接收的第一定位信号的信号接收强度低于第一强度；
    或，
    所述终端设备接收的所述第一定位信号的信号接收强度低于所述第一强度，且所述信令发送装置接收的第二定位信号的信号接收强度低于第二强度；
    或，
    所述终端设备接收的所述第一定位信号的信号接收强度与所述信令发送装置接收的所述第二定位信号的信号接收强度之间的差值小于预设差值；
    其中，所述第一定位信号是所述终端在使用所述第一频率段进行通信时接收的定位信号。
  27. 根据权利要求21至26任一所述的装置，其特征在于，所述第一频率段的频率上限低于所述第二频率段的频率下限。
  28. 根据权利要求21至26任一所述的装置，其特征在于，所述第二频率段为n个，每个所述第二频率段对应各自的所述预定条件。
  29. 根据权利要求21至26任一所述的装置，其特征在于，所述参考信号包括如下参考信号中的至少一种：
    用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
  30. 一种参考信号发送装置，其特征在于，所述装置包括：
    处理模块，被配置为与接入网设备在第一频率段进行通信；
    接收模块，被配置为接收所述接入网设备发送的预定指令，所述预定指令是所述接入网设备在所述第一频率段的所述通信满足预设条件时发送的；
    发送模块，被配置为在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  31. 根据权利要求30所述的装置，其特征在于，所述第一频率段的频率上限低于所述第二频率段的频率下限。
  32. 根据权利要求30或31所述的装置，其特征在于，所述第二频率段为n个，每个所述第二频率段对应各自的所述预定条件。
  33. 根据权利要求30或31所述的装置，其特征在于，所述参考信号包括如下参考信号中的至少一种：
    用于终端设备的特定参考信号、解调参考信号DMRS、探测参考信号SRS、信道状态信息参考信号CSI-RS。
  34. 一种参考信号发送装置，其特征在于，所述装置包括：
    处理模块，被配置为与第一接入网设备在第一频率段进行通信；
    所述处理模块，被配置为检测在所述第一频率段的通信是否满足预定条件；
    发送模块，被配置为在所述第一频率段的通信满足预定条件时，在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  35. 根据权利要求34所述的装置，其特征在于，所述预定条件包括如下条件中的至少一种：
    第二信号的信号强度大于预设强度；
    所述第二信号的接收功率大于预设功率；
    所述第二信号的接收质量大于预设质量；
    所述第二信号的误码率低于预设值；
    其中，所述第二信号是所述第一接入网设备在所述第一频率段发送的信号。
  36. 根据权利要求34所述的装置，其特征在于，所述预定条件包括:
    所述参考信号发送装置在使用所述第一频率段进行通信时的第一地理位置与预定接入网设备的第二地理位置之间的距离小于预设阈值；
    或，
    所述参考信号发送装置在使用所述第一频率段进行通信时的所述第一地理位置属于预定区域，所述预定区域是基于所述预定接入网设备所确定的区域；
    其中，所述预定接入网设备是支持所述第二频率端的接入网设备。
  37. 根据权利要求34所述的装置，其特征在于，所述预定条件包括：
    所述参考信号发送装置在所述第一频率段发送信号时所使用的多输入多输出MIMO天线的天线数量超过预设数量；
    或，
    所述参考信号发送装置在所述第一频率段发送所述信号时所使用的所述MIMO天线的天线位置符合预设位置；
    或，
    所述参考信号发送装置在所述第一频率段发送所述信号时所使用的所述MIMO天线的天线数量超过预设数量，且天线位置符合预设位置；
    其中，所述天线位置是指所使用的MIMO天线相对于MIMO天线阵列的位置。
  38. 根据权利要求34所述的装置，其特征在于，所述预定条件包括：
    所述参考信号发送装置接收的第一定位信号的信号接收强度低于第一强度；
    或，
    所述参考信号发送装置接收的所述第一定位信号的信号接收强度低于所述第一强度，且所述第一接入网设备接收的第二定位信号的信号接收强度低于第二强度；
    或，
    所述参考信号发送装置接收的所述第一定位信号的信号接收强度与所述第一接入网设备接收的所述第二定位信号的信号接收强度之间的差值小于预设差值；
    其中，所述第一定位信号是所述参考信号发送装置在使用所述第一频率段进行通信时接收的定位信号。
  39. 根据权利要求34至38任一所述的装置，其特征在于，所述第一频率段的频率上限低于所述第二频率段的频率下限。
  40. 根据权利要求34至38任一所述的装置，其特征在于，所述第二频率段为n个，每个所述第二频率段对应各自的所述预定条件。
  41. 一种接入网设备，其特征在于，所述设备包括：
    处理器；
    用于存储所述处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    检测终端设备在第一频率段的通信是否满足预定条件；
    在所述第一频率段的通信满足所述预定条件时，向所述终端设备发送预定信令，所述预定信令用于指示所述终端设备在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  42. 一种终端设备，其特征在于，所述设备包括：
    处理器；
    用于存储所述处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    与接入网设备在第一频率段进行通信；
    接收所述接入网设备发送的预定指令，所述预定指令是所述接入网设备在所述第一频率段的所述通信满足预设条件时发送的；
    在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  43. 一种终端设备，其特征在于，所述设备包括：
    处理器；
    用于存储所述处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    与第一接入网设备在第一频率段进行通信；
    检测在所述第一频率段的通信是否满足预定条件；
    在所述第一频率段的通信满足所述预定条件时，在第二频率段发送参考信号；
    其中，所述第一频率段不同于所述第二频率段。
  44. 一种移动通信系统，其特征在于，所述移动通信系统包括：接入网设备和终端设备；
    所述接入网设备包括如权利要求21至29任一所述的装置；
    所述终端设备包括如权利要求30至33任一所述的装置。
  45. 一种移动通信系统，其特征在于，所述移动通信系统包括：接入网设备和终端设备；
    所述终端设备包括如权利要求34至40任一所述的装置。
  46. 一种移动通信系统，其特征在于，所述移动通信系统包括：接入网设备和终端设备；
    所述接入网设备是如权利要求41所述的接入网设备；
    所述终端设备是如权利要求42所述的终端设备。
  47. 一种移动通信系统，其特征在于，所述移动通信系统包括：接入网设备和终端设备；
    所述终端设备是如权利要求43所述的终端设备。
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