WO2018202077A1 - Procédé et dispositif de mesure d'interférence - Google Patents

Procédé et dispositif de mesure d'interférence Download PDF

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Publication number
WO2018202077A1
WO2018202077A1 PCT/CN2018/085452 CN2018085452W WO2018202077A1 WO 2018202077 A1 WO2018202077 A1 WO 2018202077A1 CN 2018085452 W CN2018085452 W CN 2018085452W WO 2018202077 A1 WO2018202077 A1 WO 2018202077A1
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WIPO (PCT)
Prior art keywords
resource
measurement
terminal device
interference measurement
interference
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PCT/CN2018/085452
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English (en)
Chinese (zh)
Inventor
吴明
张弛
马小骏
秦熠
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710344856.4A external-priority patent/CN108809454B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18794466.5A priority Critical patent/EP3609216A1/fr
Publication of WO2018202077A1 publication Critical patent/WO2018202077A1/fr
Priority to US16/670,529 priority patent/US20200067612A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

Definitions

  • the present application relates to the field of communications and, more particularly, to interference measurement methods and apparatus.
  • duplexing can be divided into Time Division Duplex (TDD) and Frequency Division Duplex (FDD) according to the duplex mode.
  • TDD mode the communication system generally has only one working frequency band, and this working frequency band is only used for uplink communication or downlink communication in one time period.
  • FDD mode the communication system includes a pair of working frequency bands, one of which is for uplink communication only, and the other is for downlink communication only. Due to the uneven distribution of terminal devices in the communication network, the uplink and downlink traffic of different terminal devices may also be different. Therefore, there may be differences between uplink and downlink traffic of different network devices in the same period.
  • a communication network employing flexible duplex technology while one terminal device is performing uplink communication, another terminal device of a neighboring cell may be performing downlink communication.
  • the terminal device that is performing downlink communication is interfered by the uplink signal sent by the terminal device that is performing uplink communication, which may easily cause the downlink signal reception failure of the terminal device.
  • the network side device needs to coordinate based on interference information between the terminal device and the terminal device. Therefore, how to perform interference measurement between the terminal device and the terminal device becomes a technical problem to be solved.
  • the application provides an interference measurement method and device for performing interference measurement between a terminal device and a terminal device.
  • an interference measurement method comprising: receiving, by a terminal device, interference measurement resource configuration information from a network side device; the terminal device performing first interference measurement by using a first measurement resource, where The first measurement resource is a true subset of the interference measurement resource, where the number of resource units located in the same symbol in the first measurement resource is M ⁇ 2, and the M resources in the same measurement resource are located in the same symbol. Between two adjacent resource units in a cell, the interval in the frequency domain is greater than 1 subcarrier.
  • the terminal device can perform the first interference measurement on the non-contiguous resource unit, so that the terminal device can perform interference measurement on the measurement signals distributed on the non-contiguous resource unit in the frequency domain sent by other terminal devices.
  • the terminal device that will perform interference measurement that is, the terminal device that performs the first interference measurement using the first measurement resource
  • the first terminal device is referred to as “the first terminal device”.
  • the terminal device to be measured is referred to as a "second terminal device.”
  • the method of the embodiment of the present application may enable the first terminal device to perform interference measurement on the measurement signal distributed on the non-contiguous resource unit in the frequency domain sent by the second terminal device.
  • the first terminal device and the second terminal device. Terminal devices belong to different cells.
  • the interval between the two resource elements in the M resource elements located in the same symbol in the first measurement resource is an interval of N subcarriers or an integer of N. Multiple subcarriers, where N ⁇ 2.
  • the distribution position of the first measurement resource in the frequency domain may correspond to all or part of the combo of the measurement signal, so the first measurement resource Between adjacent two resource units, N subcarriers or integer multiples of N subcarriers may be spaced.
  • the resource unit included in the first measurement resource is located on at least two symbols, an even number of symbols are separated between adjacent symbols in the at least two symbols.
  • the timing of the first measurement resource for measurement may lag behind the timing of the measured measurement signal, at this time.
  • the resource unit included in the first measurement resource may be located on at least two symbols, and an even number of symbols are arranged between adjacent symbols, which can ensure the accuracy of measurement and save measurement resources as much as possible.
  • the method further includes: the terminal device receiving the indication information sent by the network side device, where the indication information is used to indicate that the terminal device uses the first measurement resource to perform the An interference measurement.
  • the network side device may use the indication information to notify the terminal device to perform interference measurement by using resource elements that are not consecutive in the frequency domain, even if the interference measurement resources configured by the network side device are continuously distributed in the frequency domain, the terminal device may pass the indication.
  • the information is learned that the current interference measurement requires the use of a true subset of the interference measurement resources, ie the first measurement resource performs the interference measurement.
  • the using, by the terminal device, the first interference measurement by using the first measurement resource comprises: using, by using the first measurement resource, the first interference measurement by the terminal device according to a predefined rule.
  • the network side device and the terminal device may also pre-arrange rules for performing the first interference measurement by using the first measurement resource, for example, it may be pre-agreed when the interference measurement resource is configured on some fixed symbol, or at a fixed period.
  • the terminal device can use the true subset in the interference measurement resource, that is, the first measurement resource, to perform the first interference measurement.
  • the method further includes: the terminal device reporting an interference measurement result obtained according to the first interference measurement.
  • the terminal device reports the interference measurement result, so that the network side device performs coordination based on the interference measurement result, thereby reducing interference between the terminal devices.
  • the method further includes: the terminal device performing second interference measurement by using a second measurement resource, where the second measurement resource is a true subset of the interference measurement resource, and the second The number of resource units in the same symbol in the measurement resource is K ⁇ 2, and the interval between the two resource units in the K resource units located in the same symbol in the second measurement resource is in the frequency domain. More than one subcarrier, the resource unit in the second measurement resource and the resource unit in the first measurement resource do not overlap; the terminal device reports the obtained according to the first interference measurement and the second interference measurement. Interfering with measurement results.
  • the terminal device may perform interference measurement based on two measurement resources, which is beneficial for the network side device to obtain relatively accurate interference information.
  • the measurement content of the second interference measurement may be the same as the measurement content of the first interference measurement, for example, the second interference measurement and the first interference measurement both measure the measurement signal sent by the same second terminal device, so that Obtaining more measurement results, so that the finally reported measurement result is more accurate; the measurement content of the second interference measurement may also be different from the measurement content of the first interference measurement, for example, the second interference measurement is used to measure the background noise. In order to correct the measurement result of the first interference measurement, so that the finally reported measurement result is more accurate.
  • a second aspect provides an interference measurement method, where the method includes: the network side device sends interference measurement resource configuration information, where the interference measurement resource includes a first measurement resource, and the first measurement resource is used by the terminal device to perform An interference measurement, where the first measurement resource is a true subset of the interference measurement resource, and the number of resource units located in the same symbol in the first measurement resource is M ⁇ 2, and the first measurement resource is located in the same
  • the interval between the two adjacent resource elements among the M resource elements in the symbol is greater than one subcarrier in the frequency domain.
  • the terminal device that performs interference measurement that is, the terminal device that performs the first interference measurement using the first measurement resource
  • the terminal device to be measured is referred to as a "second terminal device”
  • the network side device that serves the first terminal device that is, the network side device that transmits the interference measurement resource configuration information
  • the first network side device indicates that the network side device serving the second terminal device is referred to as a “second network side device”.
  • the interval between the two resource elements in the M resource elements located in the same symbol in the first measurement resource is an interval of N subcarriers or an integer of N. Multiple subcarriers, where N ⁇ 2.
  • the resource unit included in the first measurement resource is located on at least two symbols, an even number of symbols are separated between adjacent symbols in the at least two symbols.
  • the method further includes: the network side device sending indication information, where the indication information is used to instruct the terminal device to perform the first interference measurement by using the first measurement resource.
  • the method further includes: the network side device receiving, by the terminal device, an interference measurement result obtained according to the first interference measurement.
  • the interference measurement resource further includes a second measurement resource, where the second measurement resource is used by the terminal device to perform second interference measurement, and the second measurement resource is the interference Measure a true subset of resources, where the number of resource units located in the same symbol in the second measurement resource is K ⁇ 2, and two adjacent resources among the K resource units located in the same symbol in the second measurement resource Between the units, the interval in the frequency domain is greater than 1 subcarrier, and the resource unit in the second measurement resource and the resource unit in the first measurement resource do not overlap; the method further includes: the network side device Receiving interference measurement results obtained from the terminal device according to the first interference measurement and the second interference measurement.
  • the interference measurement resource configuration information is sent by the network side device based on the second terminal device The resources used are determined.
  • the “resource used by the second terminal device to transmit the measurement signal” is recorded as the first measurement signal resource. It should be understood that the first measurement signal resource and the first measurement resource belong to resources of different cells.
  • the first network side device determines, according to the first measurement signal resource, the interference measurement resource configuration information, so that the first terminal device performs interference measurement on the first measurement resource corresponding to the first measurement signal resource, where It is advantageous to prevent the first terminal device from misdetecting the transmitted signal of the other terminal device (for example, the third terminal device) when the second terminal device performs the interference measurement, which is beneficial to improving the accuracy of the interference measurement.
  • the time-frequency position of the first measurement resource and the time-frequency of all or part of the first measurement signal resource The location is the same.
  • the first terminal device may perform the first interference measurement on all time-frequency positions corresponding to the first measurement signal resource, or perform interference measurement on a part of the time-frequency position corresponding to the first measurement signal resource. It has high flexibility, which is beneficial for terminal equipment and terminal equipment to flexibly perform interference measurement.
  • the location of the resource element of the first symbol in the frequency domain in the first measurement resource is All or part of the resource elements located in the second symbol of a measurement signal resource have the same position in the frequency domain, and the positions of the first symbol and the second symbol in the time domain are the same.
  • the location of the resource element of the first symbol in the frequency domain in the first measurement resource is All or a part of the resource elements located in the third symbol in a measurement signal resource have the same position in the frequency domain, wherein the first symbol and the second symbol have the same sequence number, the second symbol is continuous with the third symbol, and the second symbol is located at the Before the three symbols.
  • the resource unit of one symbol of the first measurement resource corresponds to the resource unit of two symbols in the first measurement signal resource, which is beneficial for the terminal device to perform accurate interference measurement.
  • the M resource units in which the first measurement resource is located in the same symbol may be arranged at equal intervals or may be arranged at non-equal intervals. High flexibility. Further, an even number of symbols are arranged between adjacent ones of the at least two symbols, which can reduce the influence of the timing misalignment on the interference measurement, and is beneficial to the terminal device to perform accurate interference measurement.
  • the second measurement resource corresponds to the second measurement signal resource, where the second measurement resource belongs to the first The resource of the serving cell where the terminal device is located, the second measurement signal resource belongs to the resource of the serving cell where the second terminal device is located, the second measurement signal resource is a vacant resource, and the second terminal device is located on the second measurement signal resource. Both the terminal device and the network side device of the cell do not transmit signals. Correspondingly, on the second measurement resource, there is no signal from the serving cell to which the second terminal device belongs.
  • the second network side device may reserve a part of the resource and not transmit the signal, so that the first terminal device may perform interference measurement (ie, background noise measurement) on the second measurement resource that does not transmit the signal, where It is convenient for the network side device to obtain more accurate interference information.
  • interference measurement ie, background noise measurement
  • the present application provides a first terminal device, which has a function of implementing the behavior of the first terminal device in the actual method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the application provides a first network side device, where the network side device has a function of implementing the behavior of the first network side device in the foregoing method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the present application provides a second terminal device, where the terminal device has a function of implementing the behavior of the second terminal device in the foregoing method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the application provides a second network side device, where the network side device has a function of implementing the behavior of the second network side device in the foregoing method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the application provides a first terminal device, where the device includes a processor and a receiver.
  • the terminal device may further include a transmitter.
  • the terminal device may further include a memory.
  • the receiver is configured to support the terminal device to receive information and/or data sent by the network side device involved in the foregoing method, such as receiving indication information sent by the network side device, where the receiver is further configured to support the terminal device to receive the foregoing method. Measurement signals from other terminal devices for interference measurement.
  • the transmitter is configured to support the terminal device to send information or data involved in the foregoing method to the network side device, and report the measurement result as described above.
  • the processor is configured to support the terminal device to perform a corresponding function of the first terminal device in the above method.
  • the memory is for coupling with a processor to store program instructions and data necessary for the terminal device.
  • the processor is configured to execute an instruction stored in the memory, and when the instruction is executed, the terminal device performs the method performed by the first terminal device in the above method.
  • the application provides a first network side device, where the device includes a transmitter.
  • the network side device may further include a receiver.
  • the transmitter and receiver are used to support communication between the network side device and the terminal device.
  • the transmitter is configured to send information and/or data involved in the above method to the terminal device, for example, to send indication information.
  • the receiver is configured to support the network side device to receive information and/or data sent by the terminal device involved in the foregoing method, for example, receiving the measurement result reported by the terminal device.
  • the network side device may further include a processor configured to support the network side device to perform a corresponding function of the first network side device in the foregoing method.
  • the network side device may further include a memory, where the memory is used to be coupled to the processor, and save necessary program instructions and data of the network side device.
  • the network side device may further include a communication unit for supporting communication with other network side devices, such as communication with the core network node and/or the second network side device of the above method.
  • the application provides a second terminal device, which includes a transmitter and a processor.
  • the terminal device may further include a receiver.
  • the terminal device may further include a memory.
  • the transmitter is configured to support the terminal device to send information or data sent by the second terminal device in the foregoing method, such as sending a measurement signal.
  • the processor is configured to support the terminal device to perform a corresponding function of the second terminal device in the above method.
  • the receiver is configured to support the terminal device to receive information and/or data sent by the second network side device involved in the foregoing method, such as receiving indication information or resource configuration information sent by the network side device.
  • the memory is for coupling with a processor to store program instructions and data necessary for the terminal device.
  • the processor is configured to execute an instruction stored in the memory, and when the instruction is executed, the terminal device performs the method performed by the second terminal device in the above method.
  • the embodiment of the present application provides a communication system, where the system includes the first terminal device and the first network device.
  • the communication system may further include the second terminal device described in the foregoing aspect.
  • the communication system may further include the second network side device described in the foregoing aspect.
  • the present application provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform any of the above first aspects or any of the first aspects The method in the implementation.
  • the present application provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform any of the above second or second aspects The method in the implementation.
  • the present application provides a chip system including a processor for supporting a first terminal device to implement functions other than transmitting and receiving involved in the above aspects.
  • the chip system further comprises a memory for storing necessary program instructions and data of the first terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor for supporting a first network side device to implement functions other than transmitting and receiving involved in the above aspects.
  • the chip system further includes a memory for storing necessary program instructions and data of the network side device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor for supporting a second terminal device to implement functions other than transmitting and receiving involved in the above aspects.
  • the chip system further comprises a memory for storing necessary program instructions and data of the first terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor for supporting a second network side device to implement functions other than transmitting and receiving involved in the above aspects.
  • the chip system further includes a memory for storing necessary program instructions and data of the network side device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the technical solution provided by the application provides that the terminal device can perform the first interference measurement on the non-contiguous resource unit in the frequency domain, which is beneficial to the terminal device to perform relatively accurate interference measurement.
  • FIG. 1 is a schematic diagram of an example of a communication scenario in which cross-link interference exists.
  • Figure 2 depicts a schematic diagram of one possible measurement signal resource and an example of interference measurement resources.
  • FIG. 3 is a schematic interaction diagram of an example of an interference measurement method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another example of an interference measurement method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of still another example of an interference measurement method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an example of interference measurement resources provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another example of interference measurement resources provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an example of measurement signal resources provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of still another example of the interference measurement method provided by the embodiment of the present application.
  • FIG. 11 is a schematic interaction diagram of another example of an interference measurement method provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • Advanced Advanced
  • eLTE Long Term Evolution
  • NR New Radio
  • WiFi Wireless-Fidelity
  • WiMAX Worldwide Interoperability for Microwave Access
  • 3gpp 3rd Generation Partnership Project
  • the network side device is a device deployed in the radio access network to provide a wireless communication function for the terminal device.
  • the network side device may include various forms of base stations, macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the names of devices with base station functionality may vary.
  • the network side device may be an Access Point (AP) in a Wireless Local Area Network (WLAN), or may be a Global System for Mobile Communication (GSM) or a code division multiple access system.
  • GSM Global System for Mobile Communication
  • BTS Base Transceiver Station
  • eNB or eNodeB evolved NodeB in an LTE system.
  • the network side device may also be a Node B of a 3rd Generation (3G) system.
  • the network side device may also be a relay station or an access point, or an in-vehicle device, a wearable device, and a future.
  • 5G fifth-generation
  • PLMN public network mobile network
  • the terminal device in the embodiment of the present application may also be referred to as a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a terminal device station, a mobile station, a mobile station (MS), Remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, terminal device agent or terminal device.
  • the terminal device may include various handheld devices having wireless communication capabilities, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem. It may also include a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a wireless modem, and a handheld device.
  • PDA personal digital assistant
  • MTC Machine Type Communication
  • WLAN wireless local area network
  • STAION ST
  • MTC Machine Type Communication
  • WLAN wireless local area network
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • next-generation communication system for example, a terminal device in a 5G network or a future evolution. Terminal equipment in the PLMN network, etc.
  • the resource unit of the embodiment of the present application can be understood as a resource particle, which is a (minimum) resource unit of a system resource.
  • the resource unit may be a Resource Element (RE) defined in an existing standard, that is, 1 OFDM symbol in the time domain and one subcarrier in the frequency domain.
  • RE Resource Element
  • the resource unit can also be used in other communication resource systems in the future. If the communication system introduces other types of resource particles in the future, the symbols and subcarriers in the embodiments of the present application can correspond to the granularity of the resource particles in the time domain and the frequency domain.
  • the interference in the communication system is first briefly introduced.
  • the interference of the downlink communication to the uplink communication or the interference of the uplink communication to the downlink communication may be a cross-link interference, which may also be referred to as an anisotropic interference or other name.
  • the cross-link is uniformly used for clarity of description. Interference refers to the above two types of interference.
  • FIG. 1 is a schematic diagram of an example of a communication scenario in which cross-link interference exists.
  • the network side device 101 receives the uplink signal of the terminal device 102 served by the network side device 101 in the first time period (for the convenience of description, the uplink signal sent by the terminal device 102 may be recorded as the first uplink signal).
  • the network side device 103 sends a downlink signal to the terminal device 104 served by the network side device 103 in the first time period (for convenience of description, the downlink signal sent by the network side device 103 may be recorded as the first downlink signal).
  • the network side device 101 can not only receive the first uplink signal, but also receive the first downlink signal, and the first downlink signal may interfere with the first uplink signal.
  • the terminal device 104 not only receives the first downlink signal, but also receives the first uplink signal, and the first uplink signal may interfere with the first downlink signal.
  • Cross-link interference is easy to cause signal transmission failure.
  • the network-side device needs to obtain interference information of cross-link interference.
  • the interference information is obtained based on the interference measurement.
  • the transmitting end transmits the measurement signal on the resource #A
  • the receiving end receives the measurement signal on the resource #B at the same position as the resource #A.
  • the sending end and the receiving end device may be two different network side devices, and the sending end and the receiving end are also two terminal devices.
  • the two terminal devices may belong to different cells.
  • the measurement signal may be a reference signal, for example, a Sounding Reference Signal (SRS), a Demodulation Reference Signal (DMRS), and a Phase Tracking Reference Signal (PTRS).
  • the simultaneous measurement signal can also be a data signal.
  • the Zero Power Channel State Information Reference Signal (ZP CSI-RS) and the non-zero power channel state information reference signal Non Zero Power Channel State Information Reference Signal, ZP CSI-RS
  • DMRS Zero Power Demodulation Reference Signal
  • ZP data Zero Power Data
  • the first terminal device performs interference measurement on the second terminal device, where the first terminal device belongs to the first cell, and the second terminal device belongs to the second cell. If the second terminal device transmits the measurement signal on the resource #A, the first terminal device needs to receive the measurement signal on the resource #B.
  • the resource #A and the resource #B belong to the resource of the first cell and the resource of the second cell, respectively, and the sequence number (Index, index) of the time-frequency resource corresponding to the resource #A and the resource #B is the same, or the resource #B corresponds to
  • the location of the time-frequency resource is a subset of the location of the time-frequency resource corresponding to the resource #A, or the location of the time-frequency resource corresponding to the resource #A is a subset of the location of the time-frequency resource corresponding to the resource #B.
  • the network side device configures the interference measurement resource for the terminal device, and the terminal device performs measurement on the configured interference measurement resource, and reports the measurement result.
  • the interference measurement resource may include at least two resource units, and the terminal device may filter the measurement results on the at least two resource units (for example, average the measurement results) to obtain a final measurement result, and based on The measurement results are reported.
  • the measurement signal that the second terminal device may send the first terminal device may receive the measurement signal by using the interference measurement resource.
  • the resource unit included in the resource for transmitting the measurement signal may be discontinuous on the same symbol, for example, the resource unit included in the resource for transmitting the measurement signal may be arranged in a comb shape (where the comb tooth can be regarded as being The neighboring resource unit subcarriers on the same symbol in all resource elements are equally spaced apart).
  • the resource unit included in the interference measurement resource configured by the network side device to the terminal device is continuous on the same symbol. The first terminal device performs interference measurement and filtering on the configured interference measurement resource, which causes the first terminal device to perform interference measurement and filtering on the resource unit without measurement signal transmission, which may result in inaccurate interference measurement result.
  • the distribution of the SRS resources in the frequency domain is a comb-like distribution, and the interval between two adjacent sub-carriers on each comb-shaped SRS resource is L.
  • the L can be equal to 2 or 4.
  • Figure 2 depicts a schematic diagram of one possible measurement signal resource and an example of interference measurement resources.
  • the measurement signal resource may be an SRS resource, where the SRS resource includes two comb teeth, and one comb tooth of the two comb teeth corresponds to an odd number subcarrier (1, 3, 5, 7...) A comb tooth corresponding to the even-numbered subcarriers (2, 4, 6, 8...) is used for SRS transmission.
  • the two combs are generally used for two terminal devices of one cell to transmit uplink reference signals.
  • the CSI-RS resource corresponds to one or more CSI-RS RE pattern.
  • the "CSI-RS resource unit structure” may be referred to as "CSI-RS structure”.
  • the CSI-RS structure may be expressed as (Y, Z). Where Y represents the number of consecutive resource units in the frequency domain, and Z represents the number of consecutive resource units in the time domain.
  • the (Y, Z) may be a plurality of structures such as (2, 1), (4, 1), (8, 1) (2, 2), (2, 4).
  • the first terminal device performs interference measurement based on the CSI-RS resource.
  • the CSI-RS resources combined with the CSI-RS structure cannot match the comb-like SRS, that is, the configured CSI-RS resources correspond to multiple combs in the SRS.
  • the first terminal device may filter the measurement signals on the plurality of comb teeth corresponding to the SRS. If the measurement signals on the plurality of comb teeth are from different terminal devices (for example, the measurement signals on the plurality of comb teeth are from the second terminal device and the third terminal device), the measurement result is inaccurate. Still taking FIG.
  • the embodiment of the present application provides an interference measurement method, which enables relatively accurate interference measurement between terminal devices.
  • the method in this embodiment can be used not only for interference measurement between terminal devices, but also for network side devices, network side devices and terminal devices, network side devices, relay devices, and relay devices. Interference measurements are made with the relay device.
  • the interference measurement method of the embodiment of the present application will be described in detail by taking the interference measurement by the terminal device as an example.
  • FIG. 3 is a schematic interaction diagram of an example of an interference measurement method provided by an embodiment of the present application. It should be understood that FIG. 3 illustrates detailed steps or operations of the interference measurement method, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the various operations in FIG.
  • the method 200 can include 210 and 230.
  • the method 200 may further include 220 and/or 240.
  • the first network side device sends interference measurement resource configuration information.
  • the first terminal device receives interference measurement resource configuration information from the first network side device.
  • the interference measurement resource configuration information may be used to configure interference measurement resources.
  • the second terminal device sends the measurement signal by using the first measurement signal resource.
  • the first measurement signal resource can be understood as a resource for transmitting a measurement signal.
  • the first measurement signal resource may be configured by the second network side device.
  • the second network side device may send measurement signal resource configuration information, where the measurement signal resource configuration information is used to configure to send the measurement signal resource, and the second terminal device may determine, according to the measurement signal resource configuration information, that the second terminal device sends The first measured signal resource of the measurement signal.
  • the measurement signal can be a reference signal (eg, SRS, DMRS, PTRS, or other RS) or other data signal.
  • a reference signal eg, SRS, DMRS, PTRS, or other RS
  • the first terminal device performs first interference measurement by using the first measurement resource.
  • the first interference measurement by the first terminal device using the first measurement resource may be understood as “the first terminal device performs interference measurement on the signal received on the first measurement resource”.
  • the interference measurement may include: a reference signal received power (RSRP), a reference signal received quality (RSRQ), a channel quality indicator (CQI), and channel state information.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • CQI channel quality indicator
  • CSI Channel State Information
  • RSSI Received Signal Strength Indicator
  • the first terminal device reports the interference measurement result obtained according to the first interference measurement.
  • the time-frequency position of the first measurement resource that the first terminal device performs measurement should be the same as the total resource used by the second terminal device to send the measurement signal.
  • the time-frequency position is the same or the time-frequency position of some resources is the same.
  • the location of the resource element located in the first symbol in the frequency domain and the resource element in the frequency domain of the second symbol used by the second terminal device to send the measurement signal in the first measurement resource The positions on the same are the same (that is, the subcarrier numbers are the same).
  • the positions of the first symbol and the second symbol in the time domain are the same (ie, the symbol numbers are the same). If the timings of the cells in which the two terminal devices are located are not aligned, the sequence numbers of the first symbol and the second symbol may also be different, and only the first terminal device can receive the second terminal on the resource unit of the first symbol.
  • the measurement signal sent by the device on the second symbol is sufficient.
  • the first symbol is any symbol corresponding to the first measurement resource. That is to say, the time-frequency position corresponding to the first measurement resource is the same as the time-frequency position corresponding to all the first measurement signal resources or part of the first measurement signal resources, and the first measurement resource and the first measurement signal resource belong to resources of different cells.
  • the embodiment of the present application can perform interference measurement by using at least one of the following manners.
  • the measurement method can be recorded as “discontinuous measurement method”.
  • the discontinuous measurement manner refers to measurement that can be based on discontinuous resource units (eg, comb-shaped resource units, or partial resource units of comb-shaped resource units).
  • the discontinuous measurement mode can be measured based on resource elements arranged at intervals (which may be arranged at equal intervals or not equally spaced).
  • the first measurement resource is a true subset of the interference measurement resource, and the number of resource units located in the same symbol in the first measurement resource is M ⁇ 2, the first measurement The interval between the two resource elements in the M resource elements located in the same symbol in the resource is greater than one subcarrier in the frequency domain.
  • the number of subcarriers that are separated between two subcarriers is equal to the difference of the sequence numbers corresponding to the two subcarriers.
  • subcarriers with sequence number #1 and sequence number #3 are separated by 2 subcarriers.
  • subcarriers with sequence number #1 and sequence number #4 are separated by three subcarriers.
  • the first measurement signal resource used for transmitting the measurement signal by the second terminal device is distributed in the frequency domain as an interval distribution (for example, a comb-shaped distribution), and accordingly, the second terminal device passes the first measurement signal.
  • the distribution of the measurement signals transmitted by the resources in the frequency domain is an interval distribution.
  • resource elements of the same symbol in the first measurement signal resource are equally spaced in the frequency domain (eg, two resource elements adjacent to the same symbol are spaced N subcarriers in the frequency domain), and the second terminal device passes the frequency.
  • the measurement signals transmitted by the first measurement signal resources equally spaced on the domain are spaced apart in the frequency domain.
  • the first terminal device needs to perform interference measurement on all or part of the measurement signals sent by the second terminal device through the first measurement signal resource.
  • the time-frequency position of the first measurement resource is the same as the time-frequency position of all or part of the first measurement signal resource.
  • the arrangement of the resource elements of the same symbol in the first measurement resource may include at least one of the following:
  • the interval between the two resource elements adjacent to the same symbol in the first measurement resource in the frequency domain is N, and two resource elements adjacent to the same symbol in the first measurement resource are in the frequency domain.
  • the upper interval is equal to the interval between the two resource elements adjacent to the same symbol in the first measurement signal resource in the frequency domain.
  • the subcarriers located in the first symbol in the first measurement resource unit include subcarriers with sequence numbers #J, #J+N, #J+2N, .
  • the two resource elements adjacent to the same symbol in the first measurement resource are separated by an integer multiple of subcarriers in the frequency domain (ie, resource elements on the same symbol may be arranged at non-equal intervals).
  • the subcarriers located in the same symbol in the first measurement resource unit include subcarriers of sequence numbers #J, #J+N, #J+3N, . That is, the location of the time-frequency resource of the first measurement resource may be the same as the time-frequency location of the portion of the first measurement signal resource.
  • N refer to the related description above, and for brevity, it will not be described here.
  • the resource unit in which the first measurement resource is located on the same symbol is not less than two.
  • the network side device configures the terminal device to perform measurement on a frequency domain resource.
  • the first network side device configures the first terminal device to perform measurement on a frequency domain resource.
  • the one-stage frequency domain resource may include multiple resource blocks (RBs).
  • the resource unit whose first measurement resource is located on the same symbol is not less than 2.
  • the measurement method can be combined with a link, and the attribute of the link includes a quantity, which can be a channel measurement or an interference measurement.
  • a type in the link may have been defined to have the above measurement method, or a new link type may be defined, the new link type having the discontinuous measurement method described above. For example, define the new link as a cross link.
  • the corresponding link type (cross link) or measurement mode (discontinuous measurement mode) may be notified in the measurement set (for example, the cross link type or the discontinuous measurement mode may be added to the configuration information of the measurement set, ie
  • the measurement set may include the cross link type or the discontinuous measurement mode, or may not pass the measurement set notification (for example, the measurement set does not include the cross link type or the discontinuous measurement mode, and the first network side device may adopt other
  • the configuration information configures the cross link type or the discontinuous measurement method).
  • the first network side device may use explicit or implicit indication signaling to notify the first terminal device to perform measurement using the discontinuous measurement manner.
  • the first network side device may send indication information to the first terminal device, where the indication information is used to display or implicitly instruct the first terminal device to perform the first interference measurement using the first measurement resource (ie, using the discontinuous measurement method to perform measurement). ).
  • the first network side device may use the F (F ⁇ 1) bit to notify the type of the link in the measurement set.
  • the first terminal device determines whether to use the corresponding measurement mode by using the link type, or directly notifies the first terminal device to use the The measurement method is used for interference measurement.
  • the first network side device may also notify the first terminal device by using implicit signaling, for example, the first terminal device determines whether the current device is used by using existing or adding other configuration signaling.
  • Interference measurement method In addition to this, it is also possible to determine the interference measurement method by using some predefined rules. For example, resources defined for use in the interference measurement and other measurements (eg, channel measurements) are different, for example, on certain fixed time domain resource units or frequency domain resource units, or on certain time domain resource units. The measurement resources on the symbol must be used for this type of interference measurement.
  • the first terminal device may determine to use the measurement mode on the measurement resource. .
  • the foregoing indication information for displaying or implicitly indicating that the first terminal device uses the first measurement resource to perform the first interference measurement may be carried in the broadcast information (for example, a Master Information Block (MIB) or a system information block, System. Information Block (SIB)), high-level signaling (for example, Radio Resource Control (RRC) signaling), Media Access Control (MAC), Control Entity (CE), physical layer signaling ( For example, one or more of the downlink control information (Downlink Control Information (DCI)).
  • MIB Master Information Block
  • SIB System. Information Block
  • RRC Radio Resource Control
  • MAC Media Access Control
  • CE Control Entity
  • DCI Downlink Control Information
  • FIG. 4 is a schematic diagram of another example of an interference measurement method provided by an embodiment of the present application.
  • the measurement signal resource includes two comb teeth
  • the second terminal device transmits the measurement signal on the first comb of the symbol #P, that is, the time domain resource corresponding to the first measurement signal resource is the symbol #P.
  • the frequency domain resource is an odd number subcarrier.
  • the first measurement resource is corresponding to the time domain resource being the symbol #P, and the frequency domain resource is all or part of the resource elements in the odd number subcarrier.
  • the first terminal device performs the first interference measurement on the first measurement resource.
  • the first measurement resource may include all odd-numbered subcarriers on symbol #P, and the first measurement resource may further include partial odd number on symbol #P No. subcarrier (for example, only subcarriers with subcarrier numbers 1, 5, and 9 are included). If the two cells are not aligned, the first measurement resource and the first measurement signal resource may be partially overlapping in the time domain.
  • FIG. 5 is a schematic diagram of still another example of an interference measurement method provided by an embodiment of the present application.
  • the measurement signal resource includes four combs
  • the second terminal device transmits the reference signal on the first comb of the symbol #P, that is, the time domain resource corresponding to the first measurement signal resource is the symbol #P.
  • the frequency domain resource is a subcarrier of 1, 5, 9....
  • the first device may perform interference measurement on the first measurement resource of all or part of the subcarriers 1, 5, 9... based on the time domain resource as symbol #P.
  • the first terminal device may determine the interference measurement resource by receiving the interference measurement resource configuration information sent by the first network side device.
  • the interference measurement resource may include a plurality of comb-shaped resource units. Therefore, the first measurement resource that the terminal device performs interference measurement is a subset or true subset of the interference measurement resource.
  • the first terminal device may perform measurement on the first measurement resource and filter, and report the measurement result filtered based on the first measurement resource. The measurement result is included in the report set of the first terminal device.
  • the first terminal device may determine whether to use the measurement method of the application scheme by using a predefined rule (for example, pre-defining the interference measurement resource can be configured only on certain time-frequency resources) or the indication information of the base station. .
  • a predefined rule for example, pre-defining the interference measurement resource can be configured only on certain time-frequency resources
  • the specific comb structure used by the second terminal device that transmits the measurement signal. For example, there are comb teeth with a subcarrier spacing of 2 and comb teeth with a subcarrier spacing of 4.
  • the first network side device may notify the first terminal device to use the corresponding measurement method by using the indication information.
  • the first network side device can also implicitly inform the terminal device corresponding measurement method through the configured interference measurement resource.
  • the first terminal device may determine that the resource for transmitting the measurement signal is a comb structure with a subcarrier spacing of 2 or 4, and then determine the first The resources are measured to make interference measurements.
  • the rules for determining a specific measurement method according to the configured interference measurement resources need to be predefined by the network side device and the terminal device, which can be defined in the communication standard.
  • the first terminal device may determine the first measurement resource according to the interference measurement resource.
  • the interference measurement resource and the first measurement resource may have a corresponding relationship.
  • the first network side device and the first terminal device may pre-arrange the relative positions of the first measurement resource and/or the second measurement resource in the interference measurement resource.
  • FIG. 6 is a schematic diagram of an example of interference measurement resources provided by an embodiment of the present application. As shown in Figure 6. Assuming that the interference measurement resource is the resource #A shown in FIG. 6, the first terminal device may determine that the first measurement resource is the resource #a shown in FIG. 6, and the interference measurement resource is the resource #B shown in FIG. The first terminal device may determine that the first measurement resource is the resource #b shown in FIG. 6. Assuming that the interference measurement resource is the resource #C shown in FIG. 6, the first terminal device may determine that the first measurement resource is the resource #c shown in FIG. 6.
  • the first terminal device performing the interference measurement does not need to judge which kind of comb structure is the resource for transmitting the measurement signal.
  • a new measurement mode is defined, which can measure discontinuous subcarriers and enable more accurate interference measurement between terminal devices.
  • the interference measurement resource may be referred to as a "discontinuous interference measurement resource.”
  • the resource elements of the same symbol in the interference measurement resource indicated by the interference measurement resource configuration information are not consecutively arranged.
  • the interference measurement resource as a CSI-RS resource as an example, a discontinuous CSI-RS structure can be defined.
  • the discontinuous CSI-RS structure can be a single resource unit structure. That is, the (1,1) structure.
  • the first measurement resource may include one or more spaced-apart (1,1) structures for comb structure corresponding to the measurement signal, and the first terminal device may be on the one or more (1, 1) structures Perform interference measurements.
  • a discontinuous (2, 1) or (4, 1) structure can be added that includes an interval between two subcarriers greater than one (ie, two subcarriers are not continuous). Similarly, the interval between any two subcarriers of the four subcarriers included in the discontinuous (4, 1) structure is greater than 1 subcarrier.
  • FIG. 7 is a schematic diagram of another example of interference measurement resources provided by an embodiment of the present application. As shown in FIG. 7, assuming that the first measurement signal resource is in a comb shape, the interference measurement resource may include a plurality of discontinuous (2, 1) structures, and the first terminal device may be in one or more discontinuous (2, 1) ) Perform interference measurements on the structure.
  • the structure of the interference measurement resource may be set according to the resource occupied by the second terminal device to send the measurement signal.
  • the interference measurement structure may be directly configured as a comb structure or other structure.
  • the discontinuous CSI-RS structure may be configured by the first network side device to the first terminal device by using signaling. Further optionally, the first network side device may configure multiple discontinuous CSI-RS structures, and dynamically instruct the first terminal device to perform interference measurement specifically by using the discontinuous CSI-RS structure.
  • the first network side device may explicitly or implicitly indicate that the first terminal device uses the discontinuous CSI-RS structure.
  • the first network side device may explicitly or implicitly indicate that the first terminal device uses the discontinuous CSI-RS structure.
  • I will not repeat them here.
  • the transmission method of the new measurement signal can be recorded as "continuous measurement signal transmission mode".
  • the interval between two subcarriers of the same symbol included in the first measurement signal resource may be one.
  • the second terminal device does not use the comb to send the measurement signal. That is, the second terminal device can transmit measurement signals in consecutive subcarriers within one or more RBs.
  • a continuous comb structure can be defined.
  • the plurality of resource units included in the continuous comb structure include resource units having a subcarrier spacing of 1 (ie, resource units having consecutive subcarriers).
  • the continuous comb structure can be used to make interference measurements.
  • FIG. 8 is a schematic diagram of an example of measurement signal resources provided by an embodiment of the present application. As shown in FIG. 8, if the second terminal device transmits the measurement signal by using the continuous comb structure, the first terminal device can use the existing interference measurement resource to perform interference measurement.
  • the second terminal device can be configured to transmit measurement signals using a plurality of combs. For example, assuming that the maximum number of combs of the measurement signal resource is 4, two consecutive combs can be configured for the second terminal device for transmitting the measurement signal. If the second terminal device transmits measurement signals using two consecutive combs, the first terminal device can perform interference measurement using existing interference measurement resources.
  • the method for transmitting the continuous measurement signal may be specifically configured by the first network side device to the first terminal device by using signaling. Further, the first network side device may configure multiple consecutive measurement signal transmission modes, and dynamically instruct the first terminal device to transmit the measurement signal according to the continuous measurement signal transmission manner.
  • the second network side device may explicitly or implicitly instruct the first terminal device to use the continuous measurement signal sending manner.
  • the first network side device indicating the measurement mode to the first terminal device.
  • I will not repeat them here
  • the uplink signal needs to be sent in advance compared to the time when the network side device sends the downlink signal.
  • the timing of the two cells with different transmission directions is not aligned, which may cause the downlink symbol to be earlier than the uplink symbol, and the length of the advance time exceeds the length of the Cyclic Prefix (CP), so that the receiving end cannot correctly receive the uplink signal.
  • CP Cyclic Prefix
  • the method for the interference measurement in the embodiment of the present application can solve the problem of timing misalignment of different cells by using at least one of the following manners, so as to improve the accuracy of the interference measurement.
  • the second terminal device can transmit the measurement signal on a plurality of symbols.
  • the first measurement signal resource includes symbol-contiguous resource elements.
  • FIG. 9 is a schematic diagram of still another example of the interference measurement method provided by the embodiment of the present application.
  • the second terminal device can transmit the measurement signal on symbol #H and symbol #H+1.
  • the first terminal device performs interference measurement on the signal received on the symbol #H, which can improve the accuracy of the interference measurement.
  • the first measurement resource includes a location of the resource unit located in the first symbol in the frequency domain and all or part of the resource elements located in the second symbol used by the second terminal device to transmit the measurement signal in the frequency domain.
  • the two symbols are consecutive to the third symbol and the second symbol is located before the third symbol.
  • the second terminal device should have the same power for transmitting measurement signals on two symbols, and the transmitted beams are the same, that is, the two signals should have the same quasi co-location (quasi-co). -location, QCL) relationship to improve the accuracy of the measurement.
  • the second terminal device may send the measurement signal on the 2 ⁇ M symbols, and the 2 ⁇ M symbols may be considered to correspond to the M measurement signal symbol groups (each symbol group includes 2 symbols).
  • the second terminal device can transmit the measurement signal on the M measurement signal symbol groups.
  • the first terminal device performs interference measurement on the signals received on the M symbols corresponding to the M measurement signal symbol groups, and the interval between any two of the M symbols is an even number of symbols, that is, the receiving end
  • the symbol number Index of the interference measurement resource used by the device is #I, #I+2, #I+4....
  • the second terminal device sends the measurement signal on the symbols with the symbol numbers #1, #2, #3, #4, #5, and #6, and the first terminal device may be in the symbol numbers #1, #3, And the first interference measurement is performed on the symbol of #5.
  • measurement between the network side device and the network side device are applicable.
  • the resources for transmitting measurement signals and receiving measurement signals may be different for different measurement situations. For example, it may no longer be an SRS or CSI-RS resource. However, this does not affect the application of this scheme to other measurement scenarios.
  • the first terminal device can perform interference measurements on a plurality of consecutive symbols.
  • the first measurement resource includes resource elements whose symbol sequence numbers are consecutive.
  • FIG. 10 is a schematic diagram of still another example of the interference measurement method provided by the embodiment of the present application.
  • the second terminal device may send a measurement signal on symbol #H
  • the first terminal device may perform interference measurement (first interference measurement) on the signals received on symbol #H-1 and symbol #H,
  • the signal received on symbol #H+1 is used for interference measurement.
  • the interference measurement result corresponding to the symbol #N is obtained according to the measurement result corresponding to the symbol #H-1 and the symbol #H and the measurement result corresponding to the symbol #H+1.
  • the interference measurement can satisfy the following formula:
  • P N is a total power of the RE corresponding to the symbol #H in the case where the second terminal device transmits the measurement signal and the first terminal device is aligned with the downlink reference signal.
  • P 0 is the total power of the corresponding RE on the symbol #H-1 measured by the first terminal device, and P 2 is the total power of the corresponding RE on the symbol #H+1 measured by the first terminal device.
  • the second terminal device sends the measurement signal on the symbol #H
  • the first terminal device may perform interference measurement on the signal received on the symbol #H-1 and the symbol #H, and receive the signal on the symbol #H+1. Perform interference measurements.
  • the second terminal device should be configured to transmit the same power of the transmitted signal on the adjacent symbols on both sides of the measurement signal, and further optionally, if the second terminal device sends the measurement signal through the symbol #H, The power of the second terminal device transmitting the signal on the symbol #H-1, the symbol #H+1, and the symbol #H+2 is the same.
  • the first terminal device may also perform interference measurement (first interference measurement) on the signals received on the symbol #H-1 and the symbol #H, and perform interference measurement on the signal received on the symbol #H-2.
  • first interference measurement interference measurement
  • the first terminal device may also perform interference measurement (first interference measurement) on the signals received on the symbol #H-1 and the symbol #H, and perform interference measurement on the signal received on the symbol #H-2.
  • the first terminal device and the second terminal device may use different subcarrier spacings (or numerologies) for signal transmission.
  • the durations of the symbols corresponding to different subcarrier intervals are different.
  • the larger the subcarrier spacing the shorter the duration of the corresponding symbol. That is, the subcarrier spacing corresponding to the first measurement resource is different from the subcarrier spacing corresponding to the second measurement resource. Further, the subcarrier spacing corresponding to the first measurement resource is greater than the subcarrier spacing corresponding to the second measurement resource, or the subcarrier spacing corresponding to the first measurement resource is n times the subcarrier spacing corresponding to the second measurement resource, to solve the timing. The problem of misalignment.
  • the link type in the first embodiment uses a subcarrier spacing in addition to the interference measurement method of the corresponding embodiment.
  • numerology For example, when the first network side device indicates that the link type is the new type (such as the cross link) in the first embodiment, after the first terminal device receives the indication information, in addition to determining the measurement method for one, the user can also be known. Carrier interval #E (for numerology #E) to receive measurement information.
  • the subcarrier spacing may be different from the subcarrier spacing used by the local cell data, and the subcarrier spacing is greater than the subcarrier spacing used by the transmitted measurement signal.
  • a plurality of types of measurement signals can be predefined or various types of resources for transmitting measurement signals can be defined, for example, a measurement signal used for channel measurement is a type, and a measurement signal for interference measurement is used.
  • interference measurements can also be classified into co-directional interference and cross-interference types.
  • Different types of measurement signals have different configurations.
  • the configuration method of the present embodiment is used when the network side device indicates the interference measurement, or indicates that the current measurement signal is configured as the interference measurement type measurement signal configuration, or has other explicit or implicit configuration information. In this way, the network side device can save the overhead without indicating the configuration of each SRS symbol.
  • Specific signaling may use one or more of broadcast signaling, high layer signaling (including RRC), MAC CE, and L1 physical layer signaling (eg, DCI).
  • the first terminal device may select a beam for transmitting the measurement signal according to the indication of the first network side device, or may select a beam for transmitting the measurement signal by itself.
  • the first network side device may configure the measurement resource to the terminal device according to the foregoing configuration method, or the terminal device itself selects the measurement resource and the transmission beam according to the foregoing rules.
  • the second network side device serving the second terminal device may reserve some resources and not send a signal, and the first terminal device performs background measuring.
  • the measured background can be seen as including interference generated by other cells.
  • the size of the total interference measured on the first measurement resource minus the background size is considered to be the amount of interference that needs to be measured.
  • the method 230 can also include:
  • the first terminal device performs a second interference measurement using the second measurement resource.
  • the second measurement resource is corresponding to the second measurement signal resource, and the second measurement signal resource is a vacant resource, and the terminal device and the network side device of the serving cell where the second terminal device is located are not on the second measurement signal resource.
  • the time-frequency position of the second measurement resource is the same as the time-frequency position of all or part of the second measurement signal resource.
  • For the relationship between the second measurement resource and the second measurement signal resource refer to the relationship between the first measurement resource and the first measurement signal resource, which is not described here for brevity.
  • the 240 can include:
  • the first terminal device reports the interference result obtained according to the first interference measurement and the second interference measurement.
  • the second measurement resource may correspond to a resource that does not transmit a signal by a cell served by the second terminal device. In other words, on the second measurement resource, there is no signal from the serving cell to which the second terminal device belongs.
  • the first terminal device may use the second measurement resource to perform the second interference measurement. It should be understood that the detailed description of the second interference measurement may be referred to the related description of the first interference measurement, and is not described here for brevity. For example, the first terminal is assumed.
  • the device performs the first interference measurement by using the discontinuous measurement mode, and the first terminal device may perform the second interference measurement by using the discontinuous measurement mode, that is, the second measurement resource is located in the frequency domain of any two resource units on the same symbol.
  • the interval is greater than 1 subcarrier, and the resource unit included in the second measurement resource and the resource unit included in the first measurement resource do not overlap.
  • the measurement signal resource includes two comb teeth, one comb tooth is used for the second terminal device to send the measurement signal, and the other comb tooth does not send the signal (the comb tooth that does not send the signal is the second measurement) Signal resource).
  • the first terminal device may perform the first interference measurement on the first measurement resource by using the discontinuous measurement mode in the first method (that is, perform interference measurement on the measurement signal), and perform the second interference measurement on the second measurement resource (ie, perform background noise). measuring). For example, accurate interference between terminal devices may use the total interference obtained based on the first measurement resource minus the total interference obtained from the second measurement resource.
  • the measurement signal resource includes four comb teeth, wherein one comb tooth (first measurement signal resource) is used by the second terminal device to send a measurement signal, and the other comb tooth of the four comb teeth (The second measurement signal resource does not transmit a signal, and the first terminal device may perform the first interference measurement on the first measurement resource corresponding to the first measurement signal resource, and perform the second measurement resource corresponding to the second measurement signal resource. Second interference measurement.
  • the measurement result may include a plurality of cases.
  • the measurement result may include: a total power value measured by the first terminal device based on the first measurement resource, a total power value measured by the first terminal device based on the second measurement resource, and the first terminal device is measured based on the first measurement resource. And a total difference between the total power value and the total power value measured by the first terminal device based on the second measurement resource.
  • the interference measurement result can satisfy the following formula:
  • the intefere can be regarded as the interference strength of the uplink communication of the second terminal device to the downlink communication of the first terminal device, and the RSSI_P 0 can be understood as the first terminal device measuring the RE on the symbol #H in the first measurement resource.
  • the total power value (which can also be understood as the total power value obtained by the first interference measurement)
  • RSSI_P 1 can be understood as the total power value obtained by the first terminal device measuring the RE on symbol #H in the second measurement resource ( It can also be understood as the total power value obtained by the second interference measurement, that is, the background noise measurement).
  • the interference measurement result can satisfy the following formula:
  • the P intefere can be understood as the interference strength of the uplink communication of the second terminal device to the downlink communication of the first terminal device, and (2RSSI_P 0 -RSSI_P 2 ) can be understood as the total power value obtained by the first interference measurement, ( 2RSSI_P 1 -RSSI_P 3 ) can be understood as the total power value obtained by the second interference measurement (ie, background noise measurement), and RSSI_P 0 can be understood as the first terminal device measuring the RE corresponding to the symbol #H-1 in the first measurement resource.
  • RSSI_P 2 can be understood as the total power value obtained by the RE measurement corresponding to the first terminal device measurement symbol #H+1 (the frequency domain position of the RE corresponding to the symbol #H+1 and the first measurement) All or part of the REs corresponding to the symbol #H in the resource (or the first measurement signal resource) have the same frequency domain position).
  • the RSSI_P 1 can be understood as the total power value obtained by the first terminal device measuring the RE corresponding to the symbol #H-1 of the second measurement resource
  • the RSSI_P 3 can be understood as the RE of the first terminal device measuring the symbol #H+1.
  • the total power value (the frequency domain position of the RE corresponding to the symbol #H+1 is the same as the frequency domain position of all or part of the RE of the second measurement resource (or the second measurement signal resource) on the symbol #H).
  • the first terminal device may determine the first measurement resource and/or the second measurement resource in multiple manners.
  • the method 200 may further include:
  • the first network side device sends the indication information to the first terminal device.
  • the first terminal device receives the indication information sent by the first network side device, where the indication information is used to instruct the first terminal device to perform the interference measurement.
  • the measurement performed by the first terminal device on the signal on the resource may include various types, for example, channel measurement, interference measurement, and the like.
  • the measurement methods (or measurement resources) corresponding to different measurements may be different.
  • Some resources may be predefined for interference measurements based on protocols or conventions. In this case, the first terminal device may use the predefined resource to perform interference measurement after receiving the indication information.
  • the first terminal device performs interference measurement based on the first subcarrier of each (2, 1) structure in the S (S ⁇ 1) (2, 1) structure, based on S (2, 1)
  • the second subcarrier of each (2,1) structure in the structure performs background noise measurement in the interference measurement, and the first terminal device may determine the first measurement resource and/or the second measurement resource after receiving the indication information.
  • the method 200 may further include:
  • the first terminal device determines the first measurement resource and/or the second measurement resource according to the interference measurement resource configuration information.
  • the first network side device sends the interference measurement resource configuration information to the first terminal device; correspondingly, the first terminal device receives the interference measurement resource configuration information sent by the first network side device, and optionally, the interference measurement resource configuration information is used.
  • the first terminal device may determine the first measurement resource based on the interference measurement resource configuration information and the indication information.
  • the method 200 can include:
  • the first network side device sends the first measurement resource information to the first terminal device; correspondingly, the first terminal device receives the first measurement resource information sent by the first network side device, where the first measurement resource information is used to indicate the first A measurement resource.
  • the manner in which the first terminal device determines the second measurement resource may determine a related description of the first measurement resource.
  • the first terminal device may determine the second measurement resource according to the interference measurement resource.
  • the interference measurement resource is the resource #A shown in FIG. 6
  • the first terminal device may determine that the second measurement resource is the resource #d shown in FIG. 6, and the interference measurement resource is assumed to be FIG. 6.
  • the resource #B shown the first terminal device may determine that the second measurement resource is the resource #e shown in FIG. 6.
  • the first terminal device may determine that the first measurement resource is the resource #f shown in FIG. 6.
  • FIG. 11 is a schematic interaction diagram of another example of an interference measurement method provided by an embodiment of the present application. It should be understood that FIG. 11 shows detailed steps or operations of the interference measurement method, but these steps or operations are merely examples, and other embodiments of the present application or other operations in FIG. 11 may be performed, and the present application is implemented. The example may also perform only part of the operations in FIG. Further, the method of the embodiment of the present application may further include a partial operation of the operation shown in FIG.
  • the method 300 can be performed by the first terminal device, the second terminal device, the first network side device, and the second network side device.
  • the method 300 can include:
  • the second network side device sends measurement signal resource configuration information, and the second terminal device receives the measurement signal resource configuration information.
  • the measurement signal resource configuration information may be used by the second terminal device to determine the first measurement signal resource, where the first measurement signal resource is used by the second terminal device to send the measurement signal.
  • the first network side device determines a measurement signal resource (optionally, the measurement signal resource may include at least one of a first measurement signal resource and a second measurement signal resource).
  • the first network side device may determine the first measurement signal resource by using the second network side device.
  • the first network side device sends the interference measurement resource configuration information according to the first measurement signal resource, and accordingly, the first terminal device receives the interference measurement resource configuration information.
  • the interference measurement resource configuration information is used by the first terminal device to determine the first measurement resource and the second measurement resource, where the time-frequency position of the first measurement resource corresponds to the time-frequency position of all or part of the first measurement signal resource (in no In the case of considering whether the timing is aligned, the correspondence means the same).
  • the time-frequency position of the second measurement resource corresponds to the time-frequency position of all or part of the second measurement signal resource
  • the second measurement signal resource is a vacant resource
  • the second terminal device and the terminal device served by the second network-side device The signal is not transmitted on the second measurement signal resource.
  • the second terminal device sends the measurement signal on the first measurement signal resource.
  • the first terminal device performs a first interference measurement by using the first measurement resource, and performs a second interference measurement by using the second measurement resource.
  • the first terminal device reports the interference measurement result obtained according to the first interference measurement and the second interference measurement to the first network side device.
  • the method 300 may further include:
  • the first network side device sends the indication information to the first terminal device, where the indication information is used to indicate that the interference measurement is performed.
  • the indication information may be used to indicate that the first terminal device performs the first interference measurement and the second Interference measurement).
  • the first terminal device may determine to perform the first interference measurement and the second interference measurement according to the indication information, and report the measurement result to the first network side device based on the first interference measurement and the second interference measurement, so as to facilitate the first network side device. Coordination or adjustment according to the measurement result may be used to reduce interference or reduce the impact of interference on data transmission of the cell.
  • the second terminal device may only need to receive the measurement signal resource configuration information of the second network side device (for determining the first measurement signal resource), and determining For the comb teeth for transmitting the measurement signal, the second terminal device may not need to know the comb teeth of the measurement background.
  • the second network side device may configure the comb resource for transmitting the measurement signal to be less than the total comb resource.
  • the first terminal device may need to know the location of the resource unit that measures the background (ie, the first terminal device needs to know the second measurement resource), which may affect the first terminal. The device processes the measurement results and reports the measurement results.
  • the J value is preferably 1 or 2 (assuming a maximum of 4 comb teeth, respectively corresponding to the serial numbers comb1, 2, 3, 4), so that the comb This method can also be used in the case where the tooth is 2. Of course, it is not excluded as other combs.
  • the protocol pre-defined fixed comb is used to measure the background, the first terminal device does not need to determine the position of the background noise measurement by the first network side device indication. However, the first terminal device needs to know that the interference measurement between the terminal devices is currently being performed, which may require the first network side device to indicate.
  • the indication of the first network side device may use broadcast signaling, high layer signaling (including RRC), MAC CE, L1 physical layer signaling (eg, DCI), and the like.
  • the first network side device configures resources for interference measurement by using broadcast signaling or RRC signaling, and the first terminal device performs interference measurement on the corresponding measurement resource.
  • the first network side device configures resources for interference measurement by using broadcast signaling or RRC signaling.
  • the first network side device passes the DCI or the MAC CE. Notifying the first terminal device, triggering the first terminal device to perform interference measurement, and the first terminal device knows the resource location for measuring the background according to the predefined information when performing measurement.
  • the first network side device can also use other indication methods.
  • the first terminal device can also determine the background interference based on the measured interference value. For example, the minimum power value measured on a group of REs can be considered as background interference.
  • a variable comb position can be used for background interference measurements.
  • the comb position can be indicated by the first network side device to the first terminal device or determined according to the configured measurement resources.
  • the indication of the first network side device may use broadcast signaling, high layer signaling (including RRC), MAC CE, L1 physical layer signaling (eg, DCI), and the like.
  • the comb for measuring the background may be configured by broadcast signaling or RRC for a period of time, or indicated by DCI or MAC CE. If no indication is received from the first network side device, a default comb can be used to measure the background. This default comb needs to be predefined.
  • the interference measurement resource may have multiple structures. Taking the CSI-RS structure as an example, the ZP CSI-RS resources configured by the first network side device to the first terminal device are composed of CSI-RS.
  • the first network side device (cell 1) and the second network side device (cell 2) need to coordinate information such as measurement resources, so the second network side device notifies the first network side device which terminal devices are sent.
  • the first network side device can know the comb information of the second network side device transmitting the measurement signal, for example, the comb tooth is 2 or the comb tooth is 4.
  • the first network side device configures the corresponding measurement resource to the first terminal device according to the comb tooth information.
  • the first network side device may configure one or more (2, 1) CSI-RS resources for the first terminal device;
  • the first network side device may configure one or more (4, 1) or (2, 2) CSI-RS resources for the first terminal device.
  • the comb tooth position of the measurement background can be determined according to the configured comb structure. For example, when the comb-tooth spacing is 2, the second comb is used as the measurement background; when the comb-tooth spacing is 4, the third comb is used as the measurement background.
  • the first terminal device can determine resources for measuring the background according to the measurement resources configured by the first network side device.
  • the first terminal device may determine that the second RE in the frequency domain is used to measure the background; If the first network side device configures one or more (Y, Z) (Z, 4, 1) ZP CSI-RS resources, the first terminal device may determine that the third RE in the frequency domain is used to measure the background.
  • the first network side device may determine that the third RE in the frequency domain is used to measure the background.
  • the comb for measuring the background can use one comb or a plurality of combs. Since the signals transmitted by other cells on different combs may be different, the background of the RE that measures the interference is different from the background measured on the RE dedicated to the measurement background. In this case, the background can be measured using multiple combs, and multiple measurements are averaged. Or the RE of different interference measurement corresponds to an RE of background noise measurement. For example, a group of CSI-RSs, 4 REs, where the first and fourth REs are used to measure interference from different terminal devices, and the second and third REs are used to measure the background, and the interference measured on the second RE can be measured.
  • the background of the total interference measured on the first RE It is regarded as the background of the total interference measured on the first RE, and the interference measured on the third RE is regarded as the background of the total interference measured on the fourth RE.
  • the background is measured using a plurality of comb teeth, the positions of the plurality of comb teeth being pre-defined or indicated by the second network side device, the indication method being similar to the method described above.
  • the time domain and frequency domain periods of the resources used to measure the background and the normal interference measurement resources may or may not be the same.
  • two RBs (one time slot, 12 consecutive subcarriers) in the frequency domain at the same time are RB1 and RB2, respectively, and the configured interference measurement resources are SRSs with 4 symbols on each RB.
  • Do interference measurements which are symbols 1, 2, 3, and 4, respectively. Then the blank comb teeth for the background can exist on the symbols 1, 2, 3, 4 of RB1 and RB2. If the background between the two RBs or between the symbols is considered to be small.
  • the background is considered to be equal to the background measured on symbol 1 of RB1.
  • the interference measurement result is greatly different, and the reported result is different.
  • the cost is large.
  • multiple quantization intervals may be considered.
  • the same measurement report value corresponds to different quantization intervals, the corresponding interference measurement values are different.
  • the first network side device indicates the reported quantization interval to the first terminal device by signaling.
  • the first terminal device can also determine the reported quantization interval by other information. For example, if the first terminal device can know the cell ID of the second terminal device that sends the measurement signal, the first terminal device can determine the quantization interval according to the cell ID. If the network side devices negotiate well during the interference measurement process, some measurement resources are dedicated to the transmission of the larger power measurement signals; some measurement resources are dedicated to the transmission of the smaller power measurement signals. Then, the first terminal device can determine the quantization interval reported by the interference measurement result by the frequency domain location where the resource that receives the measurement signal is located. The method is beneficial for reducing the overhead of reporting the measurement result by the terminal device.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 400 includes a processor 402 and a receiver 401.
  • the terminal device may further include a transmitter 403.
  • the transmitter 403 and the receiver 401 are used to support communication between the network side device and the terminal device.
  • the terminal device may further include a memory 404.
  • the terminal device may further include an antenna 405.
  • the receiver 401 is configured to receive interference measurement resource configuration information from a network side device.
  • the processor 402 is configured to perform the first interference measurement by using the first measurement resource, where the first measurement resource is a true subset of the interference measurement resource, and the resource element located in the same symbol in the first measurement resource
  • the number of the Ms is ⁇ 2
  • the interval between the two resource elements in the M resource units located in the same symbol in the first measurement resource is greater than one subcarrier in the frequency domain.
  • the interval between the two resource elements of the M resource elements located in the same symbol in the first measurement resource is N subcarriers or an integer multiple of N subcarriers, where And N ⁇ 2; and/or, if the resource unit included in the first measurement resource is located on at least two symbols, an even number of symbols are separated between adjacent symbols in the at least two symbols.
  • the receiver 401 is further configured to: receive the indication information sent by the network side device, where the indication information is used to instruct the terminal device to perform the first interference measurement by using the first measurement resource.
  • the processor 402 is specifically configured to perform the first interference measurement by using the first measurement resource according to a predefined rule.
  • the terminal device further includes: a transmitter 403, configured to report the interference measurement result obtained according to the first interference measurement.
  • the processor 402 is further configured to: perform second interference measurement by using a second measurement resource, where the second measurement resource is a true subset of the interference measurement resource, where the second measurement resource is located in the same symbol
  • the number of resource units in the K is ⁇ 2, and the interval between the two resource units in the frequency resource region is greater than one subcarrier between the two resource units located in the same symbol in the second measurement resource.
  • the resource unit in the second measurement resource and the resource unit in the first measurement resource are not overlapped; the terminal device further includes: a transmitter 403, configured to report, according to the first interference measurement and the second interference Measure the interference measurement results obtained.
  • the respective units in the terminal device 400 provided by the present application and the other operations or functions described above are respectively configured to implement the corresponding processes performed by the first terminal device in the method 100 provided by the present application. For the sake of brevity, it will not be repeated here.
  • the physical unit in the terminal device 400 may correspond to a virtual unit, for example.
  • the processor 402 can correspond to the processing unit
  • the transmitter 403 can correspond to the transmitting unit
  • the receiver 401 can correspond to the receiving unit.
  • FIG. 13 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • the network side device includes: the device includes a transmitter 501.
  • the network side device may further include a receiver 502.
  • the transmitter 501 and the receiver 502 are used to support communication between the network side device and the terminal device.
  • the network side device further includes a processor 503.
  • the network side device may further include a memory 504.
  • the network side device may further include an antenna 505.
  • the transmitter 501 is configured to send interference measurement resource configuration information, where the interference measurement resource includes a first measurement resource, where the first measurement resource is used by the terminal device to perform first interference measurement, where the first measurement resource is a true subset of the interference measurement resources, where the number of resource units located in the same symbol in the first measurement resource is M ⁇ 2, and the two adjacent ones of the M resource elements in the same symbol in the first measurement resource Between resource units, the interval in the frequency domain is greater than 1 subcarrier.
  • the interval between the two resource elements of the M resource elements located in the same symbol in the first measurement resource is N subcarriers or an integer multiple of N subcarriers, where And N ⁇ 2; and/or, if the resource unit included in the first measurement resource is located on at least two symbols, an even number of symbols are separated between adjacent symbols in the at least two symbols.
  • the transmitter 501 is further configured to: send indication information, where the indication information is used to instruct the terminal device to perform the first interference measurement by using the first measurement resource.
  • the network side device further includes: a receiver 502, configured to receive, according to the first interference measurement, the interference measurement result from the terminal device.
  • the interference measurement resource further includes a second measurement resource, where the second measurement resource is used by the terminal device to perform second interference measurement, where the second measurement resource is a true subset of the interference measurement resource.
  • the number of resource units in the same symbol in the second measurement resource is K ⁇ 2, and the second measurement resource is located between two adjacent resource units in the K resource units in the same symbol.
  • the interval in the frequency domain is greater than 1 subcarrier, and the resource unit in the second measurement resource and the resource unit in the first measurement resource do not overlap;
  • the network side device further includes: a receiver 502, configured to receive from the receiver Interference measurement results obtained by the terminal device according to the first interference measurement and the second interference measurement.
  • the respective units in the device 500 and the other operations or functions described above are respectively configured to implement the corresponding processes performed by the first network side device in the method 100 provided by the present application. For the sake of brevity, it will not be repeated here.
  • the physical unit in the network side device 500 may correspond to a virtual unit.
  • the processor 503 may correspond to a processing unit
  • the transmitter 501 may correspond to a transmitting unit
  • the receiver 502 may correspond to a receiving unit.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the processor for performing the foregoing terminal device and the network side device of the present application may be a central processing unit (CPU), a general-purpose processor, a digital signal processing (DSP), and an application specific integrated circuit (Application Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions.
  • the software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), erasable programmable read-only registers. (Erasable Programmable Read Only Memory, EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM) Memory, Register, Hard Disk, Mobile Hard Disk, Compact Disc Read Only Memory (Compact Disc Read- Only Memory, CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the ASIC can be located in the network side device and/or the terminal device.
  • the processor and the storage medium may also exist as discrete components in the network side device and/or the terminal device.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network side device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM disk, or an optical disk, and the like, which can store program codes.

Abstract

La présente invention concerne un procédé et un dispositif de mesure d'interférence, qui permettent une mesure d'interférence entre des dispositifs terminaux. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit des informations d'attribution de ressource de mesure d'interférence en provenance d'un dispositif côté réseau ; et le dispositif terminal effectue une première mesure d'interférence à l'aide d'une première ressource de mesure, la première ressource de mesure étant un sous-ensemble réel de la ressource de mesure d'interférence, et le nombre M d'unités de ressource situées dans le même symbole dans la première ressource de mesure est supérieur ou égal à 2, et l'intervalle, dans le domaine fréquentiel, entre deux unités de ressource adjacentes quelconques parmi les M unités de ressource situées dans le même symbole dans la première ressource de mesure est supérieure à une sous-porteuse.
PCT/CN2018/085452 2017-05-05 2018-05-03 Procédé et dispositif de mesure d'interférence WO2018202077A1 (fr)

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EP18794466.5A EP3609216A1 (fr) 2017-05-05 2018-05-03 Procédé et dispositif de mesure d'interférence
US16/670,529 US20200067612A1 (en) 2017-05-05 2019-10-31 Interference measurement method and device

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CN201710314215.4 2017-05-05
CN201710314215 2017-05-05
CN201710344856.4A CN108809454B (zh) 2017-05-05 2017-05-16 干扰测量方法和设备
CN201710344856.4 2017-05-16

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