WO2019028867A1 - Procédé et appareil de configuration de mesure d'interférence, procédé et appareil de mesure d'interférence, et système de communication - Google Patents

Procédé et appareil de configuration de mesure d'interférence, procédé et appareil de mesure d'interférence, et système de communication Download PDF

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Publication number
WO2019028867A1
WO2019028867A1 PCT/CN2017/097184 CN2017097184W WO2019028867A1 WO 2019028867 A1 WO2019028867 A1 WO 2019028867A1 CN 2017097184 W CN2017097184 W CN 2017097184W WO 2019028867 A1 WO2019028867 A1 WO 2019028867A1
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Prior art keywords
reference signal
measurement
measurement reference
timing
user equipment
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PCT/CN2017/097184
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English (en)
Chinese (zh)
Inventor
宋磊
王昕�
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富士通株式会社
宋磊
王昕�
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Priority to PCT/CN2017/097184 priority Critical patent/WO2019028867A1/fr
Publication of WO2019028867A1 publication Critical patent/WO2019028867A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular, to an interference measurement configuration method, an interference measurement method, an apparatus, and a communication system.
  • TDD Time Division Duplexing
  • eIMTA downlink-uplink interference management and service adaptation
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • TDD Time Division Duplexing
  • eIMTA downlink-uplink interference management and service adaptation
  • it is used to break the fixed TDD frame structure configuration and flexibly change the uplink and downlink ratio.
  • changing the TDD frame structure configuration of one cell may affect neighboring cells. For example, two adjacent cells adopt opposite uplink and downlink configurations, which will make the system no longer have a base station-to-user (User Equipment, The interference of the UE and the interference of the user to the base station, but the interference of the base station to the base station and the interference of the user to the user occur.
  • User Equipment User Equipment
  • the TDD frame structure of the macro base station is not reconfigured, and for example, only the uplink is reconfigured to be downlink.
  • uplink and downlink reconfiguration and the like are allowed only on individual subframes.
  • the communication scenarios will be more diverse, the network architecture will be more flexible, and the uplink and downlink services will be matched.
  • Demand is also becoming more flexible and changeable.
  • the NR system will need a more flexible duplex mode: that is, in the case of system interference management, each cell can be based on its own The user's business situation to select the uplink and downlink configuration.
  • TRPs multiple adjacent transmission points
  • TRP1 is in downlink communication
  • its neighboring TRP2 can perform downlink communication or uplink communication. Relating to the user's business needs within the coverage.
  • TRP1 can also be in uplink communication
  • its neighboring TRP2 can be in downlink communication or uplink communication.
  • the transmission mode can implement flexible uplink and downlink traffic transmission, the cross-link interference (CLI), especially the UE to UE interference suppression scheme needs to be further enhanced.
  • CLI cross-link interference
  • TRP1 and UE1 are in uplink communication
  • TRP2 and UE2 are in downlink communication
  • UE1 generates UE-to-UE interference to UE2.
  • TRP2 there may be multiple TRPs in the downlink communication, and all UEs they serve may be interfered by UE1.
  • UE1 there may be multiple UEs in uplink communication in the system, which may cause interference to UEs in downlink communication. If the interference of the UE to the UE can be accurately measured, the TRP can schedule the UE with severe neighbor interference to the time-frequency resource different from the interference source UE when scheduling.
  • the aggressor UE may use its own uplink reference signal, such as a Sounding Reference Signal (SRS) or a demodulation reference signal (demodulation RS, DMRS) as a measurement reference signal.
  • SRS Sounding Reference Signal
  • DMRS demodulation reference signal
  • the victim UE may obtain UE-to-UE interference by measuring the SRS or DMRS of the aggressor UE.
  • an embodiment of the present invention provides a method, an apparatus, and a communication system for measuring interference between user equipments.
  • an interference measurement configuration method includes:
  • the network device configures a measurement reference signal for the user equipment and explicitly and/or implicitly indicates a transmission timing of the measurement reference signal, the transmission timing including a transmission timing and/or a timing adjustment amount of the measurement reference signal and/or Or initial timing, the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing the downlink transmission.
  • an interference measurement method is provided, wherein the method includes:
  • the user equipment sends the measurement reference signal according to the sending timing of the measurement reference signal, so that the user equipment that receives the measurement reference signal performs interference measurement according to the user equipment;
  • the network device explicitly and/or implicitly indicates a transmission timing of the measurement reference signal, where the transmission timing includes a transmission timing and/or a timing adjustment amount and/or an initial timing of the measurement reference signal,
  • the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing the downlink transmission.
  • an interference measurement method is provided, wherein the method includes:
  • the user equipment performs cross-link interference measurement according to the received reference signal, where the reference signal includes a measurement reference signal sent by another user equipment and a reference signal of zero power transmitted by the serving network device of the user equipment, which is obtained from the other Interference value of the user equipment;
  • the user equipment associates and reports the interference value from the plurality of other user equipments with a corresponding reference signal of zero power.
  • an interference measurement method is provided, wherein the method includes:
  • the network device sends a zero-power reference signal to the user equipment that performs downlink transmission, so that the user equipment performs cross-link interference measurement;
  • the network device receives interference information reported by the user equipment from a user equipment that performs uplink transmission.
  • an interference measurement configuration apparatus configured in a network device, where the device includes:
  • a configuration unit that configures a measurement reference signal for the user equipment and explicitly and/or implicitly indicates a transmission timing of the measurement reference signal, the transmission timing including a transmission timing and/or a timing adjustment amount of the measurement reference signal And/or initial timing, the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing the downlink transmission.
  • an interference measurement apparatus configured in a user equipment, where the apparatus includes:
  • a determining unit configured to determine a sending timing of the measurement reference signal according to a measurement reference signal configured by the network device for the user equipment;
  • a sending unit configured to send the measurement reference signal according to the sending timing of the measurement reference signal, so that a user equipment that receives the measurement reference signal performs interference measurement according to the data;
  • the transmission timing includes a transmission timing and/or a timing adjustment amount and/or an initial timing of the measurement reference signal, the transmission timing being determined by a maximum propagation delay within a coverage of a network device performing downlink transmission.
  • an interference measurement apparatus configured in a user equipment, where the apparatus includes:
  • a measurement unit configured to perform cross-link interference measurement according to the received reference signal, where the reference signal includes a measurement reference signal sent by another user equipment and a reference signal of zero power transmitted by the serving network device of the user equipment, The interference value of other user equipments;
  • the first reporting unit associates and reports the interference value from the plurality of other user equipments with the corresponding zero power reference signal.
  • an interference measurement apparatus configured in a network device, where the apparatus includes:
  • a sending unit which sends a zero-power reference signal to the user equipment that is served by the network device for downlink transmission, so that the user equipment performs CLI measurement;
  • a receiving unit which receives the interference information reported by the user equipment from the user equipment that performs uplink transmission.
  • a network device wherein the network device comprises the apparatus of the foregoing fifth or eighth aspect.
  • a terminal device wherein the terminal device comprises the apparatus of the sixth aspect or the seventh aspect.
  • the communication system comprises the network device of the foregoing ninth aspect and the terminal device of the aforementioned tenth aspect.
  • the beneficial effects of the embodiment of the present invention are: by adjusting the transmission timing of the measurement RS of the aggressor UE, the timing error between the downlink reception timing and the measurement RS of the victim UE side can be reduced, and the cyclic prefix processing window of the measurement RS in the victim UE can be guaranteed. Within the arrival, the UE to UE interference can be accurately measured.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • Embodiment 2 is a schematic diagram of an interference measurement configuration method of Embodiment 1;
  • 3 is a schematic diagram of downlink reception timing and uplink transmission timing of a UE
  • FIG. 4 is a schematic diagram of comparison between a frame boundary of a network device and a downlink reception timing and an uplink transmission timing of the UE;
  • FIG. 6 is a schematic diagram of an interference measurement method of Embodiment 3.
  • FIG. 7 is a schematic diagram of an interference measuring method of Embodiment 4.
  • Figure 9 is a schematic diagram of an interference measuring device of Embodiment 6;
  • Figure 10 is a schematic diagram of an interference measuring device of Embodiment 7.
  • Figure 11 is a schematic diagram of an interference measuring device of Embodiment 8.
  • FIG. 12 is a schematic diagram of a network device of Embodiment 9;
  • Figure 13 is a schematic diagram of a terminal device of Embodiment 10.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising,” “comprising,” “having,” or “an” are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any communication standard such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communication between the devices in the communication system may be performed according to any phase of the communication protocol, and may include, but is not limited to, the following communication protocols: 1G (Generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and the future. 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.
  • 1G Geneeration
  • 2G 2.5G, 2.75G
  • 5G New Radio
  • NR New Radio
  • the term "network device” refers to, for example, a device in a communication system that accesses a terminal device to a communication network and provides a service for the terminal device.
  • the network device may include, but is not limited to, a device: a base station (BS, a base station), an access point (AP, an Access Point), a transmission and reception point (TRP), a broadcast transmitter, and a mobility management entity (MME, Mobile). Management Entity), gateway, server, Radio Network Controller (RNC), Base Station Controller (BSC), and so on.
  • BS base station
  • AP access point
  • TRP transmission and reception point
  • MME mobility management entity
  • Management Entity gateway
  • server Radio Network Controller
  • BSC Base Station Controller
  • the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), and the like, and may further include a remote radio head (RRH, Remote Radio). Head), Remote Radio Unit (RRU), relay or low power node (eg femto, pico, etc.).
  • RRH Remote Radio head
  • RRU Remote Radio Unit
  • base station may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area.
  • the term "cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "user equipment” (UE) or “Terminal Equipment” (TE) refers to, for example, a device that accesses a communication network through a network device and receives a network service.
  • the user equipment may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • the user equipment may include, but is not limited to, a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, Cordless phones, smart phones, smart watches, digital cameras, and more.
  • a cellular phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem Wireless Fidelity
  • a wireless communication device a handheld device
  • a machine type communication device a laptop computer
  • Cordless phones smart phones, smart watches, digital cameras, and more.
  • the user equipment may also be a machine or device that performs monitoring or measurement, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, In-vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, and the like.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • This embodiment provides an interference measurement configuration method, which is applied to a network device for uplink transmission in a communication system, such as TRP1 shown in FIG. 1.
  • 2 is a schematic diagram of the method, as shown in FIG. 2, the method includes:
  • Step 201 The network device configures a measurement reference signal for the user equipment (aggressor UE), and explicitly and/or implicitly indicates a transmission timing of the measurement reference signal, where the transmission timing includes a transmission timing of the measurement reference signal and / or timing adjustment and / or initial timing, the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing downlink transmission.
  • the transmission timing includes a transmission timing of the measurement reference signal and / or timing adjustment and / or initial timing, the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing downlink transmission.
  • the user equipment is the user equipment that performs uplink transmission, and the UE1 shown in FIG. 1 may have downlink transmission to the user equipment (as shown in FIG. 1).
  • UE2 causes interference, that is, cross-link interference, which may also be referred to as UE-to-UE interference. Therefore, its serving network device (such as TRP1 shown in FIG. 1) is also explicitly and/or configured with the measurement RS.
  • TRP1 time-reliable and/or
  • the transmission timing of the measurement RS is implicitly indicated so that the UE (UE1) transmits its measurement RS at the transmission timing.
  • the transmission timing of the measurement RS and the transmission timing of the uplink data channel (for example, Physical Uplink Shared Channel (PUSCH)) and other reference signals are different.
  • the PUSCH and other reference signals are transmitted according to the principle of uplink time advance, that is, the relative amount is (N TA + N TA offset ) ⁇ T s seconds relative to the downlink reception timing, as shown in FIG. 3 . That is, the UE transmits the PUSCH and other reference signals in advance (N TA + N TA offset ) ⁇ T s seconds with respect to the downlink reception timing of the UE, where T s is the reciprocal of the sampling frequency, and N TA and N TA offset are Sampling point.
  • N TA offset 624
  • the value of N TA offset may be less than the above values defined by the LTE system.
  • the uplink and downlink frame boundaries of the TRP are aligned.
  • FIG. 4 shows the relationship between the frame boundary on the TPR side and the downlink reception timing and uplink transmission timing of the UE. As shown in FIG.
  • the TRP side frame boundary and The time difference between the downlink reception timings of the UE side is T 1 , that is, the transmission delay of the UE, and the time difference between the TRP side frame boundary and the UE side uplink transmission timing is N TAoffset T s + T 1 second.
  • the measurement timing of the measurement RS is determined by the maximum propagation delay in the coverage of the network device performing the downlink transmission, and may be expressed as a timing adjustment amount (expressed as T adjust ) and an initial timing (represented as T initial ).
  • T adjust a timing adjustment amount
  • T initial an initial timing
  • RS transmits the measurement network device may be a timing indicated by the transmission time of the RS measurement, i.e. T initial + T adjust, can refer only to the timing adjustment amount, refers to that initial or timing or the transmission timing, the timing Any combination of adjustments and initial timing.
  • the initial timing may be a frame boundary of the network device, that is, a downlink transmission time (indicated as T) of the network device, and the timing adjustment amount may be determined by a coverage of the network device that performs downlink transmission.
  • T downlink transmission time
  • the timing adjustment amount can be obtained by the foregoing method. In other scenarios, more than one network device performs downlink transmission. In this case, the timing adjustment amount is determined by the network device with the largest coverage among the network devices performing downlink transmission.
  • the initial timing may also be a value other than a frame boundary (time T) of the network device, such as a downlink reception timing of the user equipment (aggressor UE), or may be a time T+d c / c is closer to the moment value.
  • the timing adjustment may also be changed according to the setting of the initial timing, or by a user equipment (victim UE) performing downlink transmission or a serving network equipment of a user equipment (victim UE) performing downlink transmission (such as TRP2 in FIG. 1). ) obtained by measurement.
  • the transmission timing of the measurement RS (the reference signal for measuring the cross-link interference) is different from the transmission timing of the other reference signals
  • a known reference signal may be used as the measurement RS, such as SRS, DMRS, etc. You can also use the new reference signal as the measurement RS.
  • the network device also explicitly and/or implicitly indicates the transmission timing of the measurement RS while configuring the measurement RS for the user equipment.
  • the transmission timing indicated by the network device may be the transmission time and/or timing adjustment amount and/or initial timing of the measurement RS.
  • an SRS is used as an RS for measuring cross-link interference (measured RS as described above) as an example.
  • the network device when configuring the measurement RS for the user equipment, also indicates that the measurement RS is used to perform cross-link interference measurement to implicitly indicate that the measurement timing of the measurement RS is predefined, for example, by The agreement is pre-specified.
  • the configuration method may be Radio Resource Control (RRC) signaling, that is, the network device may perform the above configuration through RRC signaling.
  • RRC Radio Resource Control
  • the network device also indicates the transmission timing of the measurement RS while configuring the measurement RS for the user equipment.
  • the configuration method may be RRC signaling, that is, the network device may perform the foregoing configuration by using RRC signaling.
  • the user equipment can directly transmit the measurement RS using the transmission timing of the measurement RS indicated by the network device.
  • the network device explicitly indicates the transmission timing of the measurement RS.
  • the network device while configuring the measurement RS for the user equipment, also indicates that the measurement RS is used to perform cross-link interference measurement to implicitly indicate that the measurement timing of the measurement RS is indicated by the DCI.
  • the configuration method may be RRC signaling, that is, the network device may perform the foregoing configuration by using RRC signaling.
  • the user equipment When the measurement RS is used or triggered or activated, the user equipment further reads the DCI information to obtain the transmission timing of the measurement RS, and transmits the measurement RS at the transmission timing (transmission time) of the measurement RS. In this way, the network device explicitly and implicitly indicates the transmission timing of the measurement RS.
  • the foregoing sending timing is divided into a timing adjustment amount and an initial timing.
  • the network device further indicates an initial timing of the measurement RS while configuring the measurement RS for the user equipment, to explicitly indicate the measurement RS.
  • the initial timing and implicitly indicates that the timing adjustment amount of the measurement RS is indicated by DCI.
  • the configuration method may be RRC signaling. Therefore, when the measurement RS is used or triggered or activated, the user equipment directly obtains the initial timing of the measurement RS, and further reads the DCI information to obtain the timing adjustment amount of the measurement RS, and at the transmission time of the measurement RS ( The initial timing + timing adjustment amount) transmits the measurement RS. In this way, the network device explicitly and implicitly indicates the transmission timing of the measurement RS.
  • the foregoing sending timing is divided into a timing adjustment amount and an initial timing.
  • the network device when configuring the measurement RS for the user equipment, also indicates that the measurement RS is used for performing cross-link interference measurement, to implicitly
  • the initial timing indicating the measurement RS is predefined and implicitly indicates that the timing adjustment amount of the measurement RS is indicated by the DCI.
  • the configuration method may be RRC signaling, that is, the network device may perform the foregoing configuration by using RRC signaling. Therefore, when the measurement RS is used or triggered or activated, the user equipment determines an initial timing of the measurement RS according to a predefined definition, and further reads the DCI information to obtain a timing adjustment amount of the measurement RS, and transmits the measurement RS.
  • the measurement RS is transmitted at the time (initial timing + timing adjustment amount). In this way, the network device implicitly indicates the transmission timing of the measurement RS.
  • the foregoing sending timing is divided into two parts: a timing adjustment amount and an initial timing.
  • the network device further indicates a timing adjustment amount of the measurement RS while configuring the measurement RS for the user equipment, to explicitly indicate the measurement RS.
  • the timing adjustment amount and implicitly indicates that the initial timing of the measurement RS is predefined.
  • the configuration method may be RRC signaling, that is, the network device may perform the foregoing configuration by using RRC signaling. Therefore, when the measurement RS is used or triggered or activated, the user equipment directly obtains the timing adjustment amount of the measurement RS, and determines the initial timing of the measurement RS according to a predefined definition, and at the transmission time of the measurement RS (initial timing) + Timing adjustment amount) The measurement RS is transmitted. In this way, the network device explicitly and implicitly indicates the transmission timing of the measurement RS.
  • the measurement timing of the measurement RS of the aggressor UE is adjusted, the timing error between the downlink reception timing and the measurement RS of the victim UE side is reduced, and the measurement RS is ensured in the victim UE. Reach within the cyclic prefix processing window to further accurately measure the UE to the UE interference.
  • FIG. 5 is a schematic diagram of the method, as shown in Figure 5, the method includes:
  • Step 501 The user equipment determines a sending timing of the measurement reference signal according to a measurement reference signal configured by the network device.
  • Step 502 The user equipment sends the measurement reference signal according to the sending timing of the measurement reference signal, so that the user equipment that receives the measurement reference signal performs interference measurement accordingly.
  • the network device explicitly and/or implicitly indicates the transmission timing of the measurement reference signal while configuring the measurement reference signal for the user equipment, and the transmission timing includes the measurement reference signal as previously described.
  • the transmission time and/or the timing adjustment amount and/or the initial timing, and the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing the downlink transmission. Since the transmission timing has been described in detail in Embodiment 1, it will not be described again here.
  • the network device may thereby implicitly It is indicated that the transmission timing of the measurement reference signal is predefined.
  • the user equipment determines a transmission timing of the measurement reference signal according to a predefined definition, and transmits the measurement reference signal at the transmission timing.
  • the network device can perform the above configuration through RRC signaling.
  • the network device configures the measurement reference signal for the user equipment, it also indicates the transmission timing of the measurement reference signal. Then, the user equipment can directly determine the transmission timing of the measurement reference signal according to the indication of the network device. As mentioned before, the network device can perform the above configuration through RRC signaling.
  • the network device may be implicitly It indicates that the transmission timing of the measurement reference signal is indicated by DCI. Then, when the measurement reference signal is used or triggered or activated, the user equipment determines, according to the received downlink control information, the transmission of the measurement reference signal. Time. As mentioned before, the network device can perform the above configuration through RRC signaling.
  • the network device may thereby implicitly indicate the measurement.
  • the timing adjustment amount of the reference signal is indicated by DCI.
  • the user equipment determines the timing adjustment amount of the measurement reference signal according to the received downlink control information, and further determines the transmission timing (initial timing + timing adjustment amount) of the measurement reference signal.
  • the network device can perform the above configuration through RRC signaling.
  • the network device may be implicitly It is indicated that the initial timing of the measurement reference signal is predefined, and the timing adjustment amount of the measurement reference signal is indicated by DCI. Then, when the measurement reference signal is used or triggered or activated, the user equipment determines an initial timing of the measurement reference signal according to a predefined definition, and determines a timing adjustment amount of the measurement reference signal according to the received downlink control information, thereby determining the measurement.
  • the transmission timing of the reference signal (initial timing + timing adjustment amount).
  • the network device can perform the above configuration through RRC signaling.
  • the network device may implicitly indicate the The initial timing of the measurement reference signal is predefined. Then, when the measurement reference signal is used or triggered or activated, the user equipment determines an initial timing of the measurement reference signal according to a predefined definition, thereby determining a transmission timing (initial timing + timing adjustment amount) of the measurement reference signal.
  • the network device can perform the above configuration through RRC signaling.
  • the aggressor UE can send the measurement RS according to the transmission timing of the RS for performing CLI measurement configured by the network device, which reduces the timing error between the downlink reception timing and the measurement RS of the victim UE side, and ensures the timing error.
  • the measurement RS arrives within the cyclic prefix processing window of the victim UE, and thus the UE to UE interference can be accurately measured.
  • FIG. 6 is a schematic view of the method, As shown in FIG. 6, the method includes:
  • Step 601 The user equipment performs cross-link interference measurement according to the received reference signal, where the reference signal includes a measurement reference signal sent by another user equipment (aggressor UE) and a reference of zero power transmitted by the serving network equipment of the user equipment. Signaling, obtaining interference values from the other user equipment;
  • the reference signal includes a measurement reference signal sent by another user equipment (aggressor UE) and a reference of zero power transmitted by the serving network equipment of the user equipment. Signaling, obtaining interference values from the other user equipment;
  • Step 602 The user equipment associates and reports the interference value from the multiple other user equipments with a corresponding reference signal of zero power.
  • the association and reporting refers to reporting the interference value in an upper report set (which may be referred to as a reporting setting) associated with a zero-power reference signal.
  • the zero-power reference signal sent by the serving network device of the user equipment is, for example, a channel state information-reference signal (CSI-RS) of zero power, but this embodiment does not This is a limitation.
  • CSI-RS channel state information-reference signal
  • the serving network device may send the measurement RS when the aggressor UE (such as UE1 shown in FIG. 1) transmits the measurement RS.
  • the frequency location configures the victim UE with a zero-power CSI-RS to facilitate the CLI measurement by the victim UE.
  • the specific interference measurement method is not limited. Since the CSI-RS is configured to be zero power, the interference value of the cross-link interference can be obtained by the measurement.
  • the interference value here may be the interference receiving power, or may be other indicators, which is not limited in this embodiment.
  • the user equipment may compare the interference value from each other user equipment (aggressor UE, such as UE1 shown in FIG. 1) with a preset interference threshold, where the interference value is greater than the interference. In the case of the threshold value, the "interference-free" information is reported, and when the interference value is not greater than the interference threshold, the "no interference” information is reported. Thereby, interference reporting information corresponding to each other user equipment (aggressor UE) is obtained.
  • the "interfering" information and the "no interference” information may be reported in the form of a bitmap.
  • the "interference-free” information is set to 1
  • the "no-interference” information is set to 0
  • the interference value of a plurality of aggressor UEs is reported using a bit map.
  • the user equipment may also estimate the transmission timing of the measurement reference signal, and report the error value between the transmission timing of the measurement reference signal and the transmission timing of the downlink reception signal to the serving network device (as shown in the figure). 1 shows TRP2). Therefore, the serving network device can interact with the network device (such as TRP1 shown in FIG. 1) that performs uplink transmission to measure the reference signal of the user equipment (such as UE1 shown in FIG. 1) that performs uplink transmission.
  • the setting of the timing adjustment amount (T adjust ) of the transmission timing provides a basis.
  • the user equipment may also estimate the transmission timing of the measurement RS according to the sequence ID of the measurement RS configured by the serving network device.
  • the manner in which the serving network device of the user equipment obtains the sequence ID of the measured RS is not limited.
  • the victim UE may associate and report the zero-power CSI-RS sent by the serving network device after the interference measurement is performed according to the measurement RS sent by the aggressor UE.
  • FIG. 7 is a schematic diagram of the method, as shown in Figure 7, the method includes:
  • Step 701 The network device sends a zero-power reference signal to the user equipment (victim UE) that performs downlink transmission, so that the user equipment (victim UE) performs CLI measurement.
  • Step 702 The network device receives interference information from the user equipment (aggressor UE) that performs uplink transmission reported by the user equipment (victim UE).
  • the manner of reporting the interference information is as described in Embodiment 3, and details are not described herein again.
  • the network device may also configure a sequence ID (such as a sequence ID of the SRS) of the reference signal (measurement reference signal) for performing the CLI measurement for the user equipment (victim UE) for which the downlink transmission is performed.
  • a sequence ID such as a sequence ID of the SRS
  • the reference signal measure reference signal
  • the manner in which the network device obtains the sequence ID of the measured RS is not limited.
  • the victim UE may associate and report the zero-power CSI-RS sent by the serving network device after the interference measurement is performed according to the measurement RS sent by the aggressor UE.
  • the embodiment provides an interference measurement configuration device, which is configured on a network device that performs uplink transmission, such as TRP1 shown in FIG. 1 .
  • the principle of solving the problem is similar to the method of the first embodiment, and the specific implementation thereof is implemented.
  • the implementation of the method of Embodiment 1 can be referred to, and the description of the same portions will not be repeated.
  • FIG. 8 is a schematic diagram of the interference measurement configuration apparatus 800 of the present embodiment. As shown in FIG. 8, the apparatus 800 is shown.
  • the configuration unit 801 includes: configuring a measurement reference signal for an aggressor UE, and explicitly and/or implicitly indicating a transmission timing of the measurement reference signal, where the transmission timing includes sending the measurement reference signal The time and/or timing adjustment amount and/or initial timing determined by the maximum propagation delay within the coverage of the network device performing the downlink transmission.
  • the configuration unit 801 instructs the measurement reference signal to perform cross-link interference measurement to configure the measurement reference signal to implicitly indicate the measurement reference signal while configuring the measurement reference signal for the user equipment.
  • the transmission timing is predefined.
  • the configuration unit 801 indicates a transmission timing of the measurement reference signal while configuring the measurement reference signal for the user equipment.
  • the configuration unit 801 instructs the measurement reference signal to perform cross-link interference measurement while configuring the measurement reference signal for the user equipment to implicitly indicate the measurement reference.
  • the transmission timing of the signal is indicated by downlink control information (DCI).
  • DCI downlink control information
  • the sending timing includes the initial timing and the timing adjustment amount
  • the configuration unit 801 indicates the location of the measurement reference signal while configuring the measurement reference signal for the user equipment.
  • the initial timing is performed to explicitly indicate the initial timing of the measurement reference signal and implicitly indicate that the timing adjustment amount of the measurement reference signal is indicated by downlink control information (DCI).
  • DCI downlink control information
  • the sending timing includes the initial timing and the timing adjustment amount
  • the configuration unit 801 indicates that the measurement reference signal is used while configuring the measurement reference signal for the user equipment.
  • DCI downlink control information
  • the sending timing includes the initial timing and the timing adjustment amount
  • the configuration unit 801 indicates the location of the measurement reference signal while configuring the measurement reference signal for the user equipment. Determining the timing adjustment amount to display the timing adjustment amount of the measurement reference signal and implicitly indicating that the initial timing of the measurement reference signal is predefined.
  • the configuration of the apparatus in this embodiment adjusts the transmission timing of the measurement RS of the aggressor UE, reduces the timing error between the downlink reception timing and the measurement RS of the victim UE side, and ensures that the measurement RS is within the cyclic prefix processing window of the victimUE. Arriving, in turn, can accurately measure UE-to-UE interference.
  • the present embodiment provides an interference measurement device, which is configured in an uplink device (aggressor UE), such as UE1 shown in FIG. 1 , and the principle of solving the problem is similar to the method in Embodiment 2, For specific implementation, reference may be made to the implementation of the method of Embodiment 2, and the description of the same portions will not be repeated.
  • aggressor UE uplink device
  • FIG. 9 is a schematic diagram of the interference measurement apparatus 900 of the present embodiment.
  • the apparatus 900 includes: a determining unit 901 and a sending unit 902, where the determining unit 901 is configured according to a measurement reference signal configured by the network device for the user equipment. Determining a transmission timing of the measurement reference signal; the transmitting unit 902 is configured to transmit the measurement reference signal according to the transmission timing of the measurement reference signal, so that a user equipment that receives the measurement reference signal performs interference measurement accordingly.
  • the network device explicitly and/or implicitly indicates a transmission timing of the measurement reference signal, the transmission timing including a transmission timing and/or a timing adjustment amount and/or an initial of the measurement reference signal. Timing, the transmission timing is determined by the maximum propagation delay within the coverage of the network device performing downlink transmission.
  • the determining unit 901 determines the location according to a predefined definition. The transmission timing of the measurement reference signal is described.
  • the determining unit 901 is configured according to the indication of the network device. The transmission timing of the measurement reference signal is determined.
  • the determining unit 901 is in the When the measurement reference signal is used or triggered or activated, the transmission timing of the measurement reference signal is determined according to the received downlink control information.
  • the determining unit 901 is at the measurement reference When the signal is used or triggered or activated, determining a timing adjustment amount of the measurement reference signal according to the received downlink control information, thereby determining a transmission timing of the measurement reference signal, where the transmission timing includes the initial timing and the Timing adjustment amount.
  • the determining unit 901 When the measurement reference signal is used or triggered or activated, determining an initial timing of the measurement reference signal according to a predefined definition, and determining a timing adjustment amount of the measurement reference signal according to the received downlink control information, thereby determining the The transmission timing of the reference signal is measured, and the transmission timing includes the initial timing and the timing adjustment amount.
  • the determining unit 901 determines the according to a predetermined definition.
  • the initial timing of the reference signal is measured to determine a transmission timing of the measurement reference signal, the transmission timing including the initial timing and the timing adjustment amount.
  • the aggressor UE can send the measurement RS according to the transmission timing of the RS for performing CLI measurement configured on the network side, which reduces the timing error between the downlink reception timing and the measurement RS of the victim UE side, and ensures the timing error.
  • the measurement RS arrives within the cyclic prefix processing window of the victim UE, and thus the UE to UE interference can be accurately measured.
  • the present embodiment provides an interference measurement apparatus, which is configured in a user equipment (victim UE) for performing downlink transmission, such as UE2 shown in FIG. 1, and the principle of solving the problem is similar to the method of Embodiment 3,
  • a user equipment such as UE2 shown in FIG. 1
  • UE2 user equipment
  • the principle of solving the problem is similar to the method of Embodiment 3
  • FIG. 10 is a schematic diagram of the interference measurement apparatus 1000 of the present embodiment.
  • the apparatus 1000 includes: a measurement unit 1001 and a first reporting unit 1002.
  • the measurement unit 1001 performs cross-link interference according to the received reference signal.
  • the reference signal includes a measurement reference signal sent by another user equipment (aggressor UE) and a reference signal of zero power transmitted by the serving network device of the user equipment, to obtain an interference value from the other user equipment;
  • the reporting unit 1002 associates and reports the interference value from the plurality of other user equipments with the corresponding reference signal of zero power.
  • the reporting unit 1002 may compare the interference value from each of the other user equipments with a preset interference threshold; if the interference value is greater than the interference threshold, The interference information is reported; if the interference value is not greater than the interference threshold, the interference-free information is reported.
  • the interference information and the interference-free information may be reported in the form of a bitmap.
  • the apparatus 1000 may further include: an estimating unit 1003 and a second reporting unit 1004, where the estimating unit 1003 estimates a sending timing of the measurement reference signal, and the second reporting form The element reports an error value between the transmission timing of the measurement reference signal and the transmission timing of the downlink reception signal to the serving network device.
  • the estimating unit 1003 may estimate the transmission timing of the measurement reference signal according to the sequence ID of the measurement reference signal configured by the serving network device.
  • the victim UE may associate and report the zero-power CSI-RS sent by the serving network device after the interference measurement is performed according to the measurement RS sent by the aggressor UE.
  • the present embodiment provides an interference measurement device, which is configured in a network device for performing downlink transmission, such as TRP2 shown in FIG. 1 .
  • a network device for performing downlink transmission such as TRP2 shown in FIG. 1 .
  • the principle of solving the problem is similar to the method of Embodiment 4, and the specific implementation may be Referring to the implementation of the method of Embodiment 4, the description of the same portions will not be repeated.
  • FIG. 11 is a schematic diagram of the interference measurement apparatus according to the embodiment.
  • the apparatus 1100 includes: a sending unit 1101 and a receiving unit 1102, and the sending unit 1101 serves the user equipment that performs downlink transmission to the network device ( The victim UE transmits a zero-power reference signal for the user equipment to perform CLI measurement; the receiving unit 1102 receives interference information from the user equipment (aggressor UE) for performing uplink transmission reported by the user equipment (victim UE).
  • the apparatus 1100 may further include: a configuration unit 1103 configured to configure a sequence ID of the measurement reference signal for a user equipment (victim UE) that performs downlink transmission served by the network device. So that the user equipment (victim UE) estimates the transmission timing of the measurement reference signal accordingly.
  • a configuration unit 1103 configured to configure a sequence ID of the measurement reference signal for a user equipment (victim UE) that performs downlink transmission served by the network device. So that the user equipment (victim UE) estimates the transmission timing of the measurement reference signal accordingly.
  • the victim UE may associate and report the zero-power CSI-RS sent by the serving network device after the interference measurement is performed according to the measurement RS sent by the aggressor UE.
  • the present embodiment provides a network device, where the network device includes the interference measurement configuration device according to the embodiment 5 or the interference measurement device according to the embodiment 8.
  • the network device may include the embodiment 5
  • the device may include the device described in Embodiment 8 when the network device performs downlink transmission.
  • FIG. 12 is a schematic diagram of a network device according to an embodiment of the present invention.
  • network device 1200 can include a processor 1210 and a memory 1220; memory 1220 is coupled to processor 1210. Wherein the memory 1220 can store various data; in addition, a program 1230 for information processing is stored, and the program 1230 is executed under the control of the processor 1210 to receive various information transmitted by the user equipment and to the user equipment. Send a variety of information.
  • the functionality of the apparatus described in embodiment 5 or embodiment 8 can be integrated into central processor 1210.
  • the processor 1210 may be configured to: configure a measurement reference signal for an aggressor UE, and explicitly and/or implicitly indicate a transmission timing of the measurement reference signal, the transmission timing including the measurement reference
  • the transmission timing and/or timing adjustment amount and/or initial timing of the signal is determined by the maximum propagation delay within the coverage of the network device performing the downlink transmission.
  • the processor 1210 may be configured to: send a reference signal of zero power to a user equipment (victim UE) that performs downlink transmission to the network device, and receive an uplink transmission from the user equipment (victim UE). Interference information of the user equipment (aggressor UE).
  • the apparatus described in Embodiment 5 or Embodiment 8 may be configured separately from the processor 1210.
  • the apparatus described in Embodiment 5 or Embodiment 8 may be configured as a chip connected to the processor 1210.
  • the functions of the apparatus described in Embodiment 5 or Embodiment 8 are implemented by the control of the processor 1210.
  • the network device 1200 may further include: a transceiver 1240, an antenna 1250, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the network device 1200 does not have to include all the components shown in FIG. 12; in addition, the network device 1200 may further include components not shown in FIG. 12, and reference may be made to the prior art.
  • the aggressor UE can send the measurement RS according to the transmission timing of the RS for performing CLI measurement configured on the network side, which reduces the timing error between the downlink reception timing and the measurement RS of the victim UE side, and ensures The measurement RS arrives within the cyclic prefix processing window of the victim UE, so that the UE to UE interference can be accurately measured.
  • the embodiment provides a terminal device, which includes the interference measurement device as described in Embodiment 6 or Embodiment 7.
  • the terminal device When the terminal device performs uplink transmission, it may include the apparatus described in Embodiment 6 and serve as an aggressor UE; when the terminal equipment performs downlink transmission, it may include the apparatus described in Embodiment 7, and as a victim UE.
  • FIG. 13 is a schematic diagram showing the system configuration of the terminal device 1300 according to the embodiment of the present invention.
  • the terminal device 1300 can include a processor 1310 and a memory 1320; the memory 1320 is coupled to the processor 1310. It is worth noting that the figure is exemplary; other types of structures may be used to supplement or replace the structure. To achieve telecom functions or other functions.
  • the functionality of the interference measurement device described in Embodiment 6 or Embodiment 7 can be integrated into the processor 1310.
  • the processor 1310 may be configured to: determine a transmission timing of the measurement reference signal according to a measurement reference signal configured by the network device for the aggressor UE; and send according to the transmission timing of the measurement reference signal The measuring reference signal, so that a terminal device receiving the measurement reference signal performs interference measurement according to the network device; wherein the network device explicitly and/or implicitly indicates the sending of the measurement reference signal Timing, the transmission timing includes a transmission timing and/or a timing adjustment amount and/or an initial timing of the measurement reference signal, the transmission timing being determined by a maximum propagation delay within a coverage of a network device performing downlink transmission.
  • the processor 1310 may be configured to: perform cross-link interference measurement according to the received reference signal, where the reference signal includes measurement reference signals sent by other aggressor UEs and the terminal device (victim UE) a zero-power reference signal transmitted by the serving network device, obtaining an interference value from the other aggressor UE; a reference value from a plurality of the other aggressor UEs and a corresponding zero power reference Signals are correlated and reported.
  • the reference signal includes measurement reference signals sent by other aggressor UEs and the terminal device (victim UE) a zero-power reference signal transmitted by the serving network device, obtaining an interference value from the other aggressor UE; a reference value from a plurality of the other aggressor UEs and a corresponding zero power reference Signals are correlated and reported.
  • the interference measurement device described in Embodiment 6 or Embodiment 7 may be configured separately from the processor 1310.
  • the interference measurement device described in Embodiment 6 or Embodiment 7 may be configured as the processor 1310.
  • the connected chip is controlled by the processor 1310 to implement the functions of the interference measuring device described in Embodiment 6 or Embodiment 7.
  • the terminal device 1300 may further include: a communication module 1330, an input unit 1340, a display 1350, and a power supply 1360. It is to be noted that the terminal device 1300 does not necessarily have to include all the components shown in FIG. 13; in addition, the terminal device 1300 may further include components not shown in FIG. 13, and reference may be made to the related art.
  • processor 1310 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls various components of terminal device 1300. operating.
  • the memory 1320 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device.
  • Various data can be stored, and programs for executing related information can be stored.
  • the processor 1310 can execute the program stored by the memory 1320 to implement information storage or processing and the like.
  • the functions of other components are similar to those of the existing ones and will not be described here.
  • the components of the terminal device 1300 can be implemented by dedicated hardware, firmware, software, or a combination thereof without departing from the invention. range.
  • the aggressor UE may send the measurement RS according to the transmission timing of the RS for performing CLI measurement configured on the network side, which reduces the timing error between the downlink reception timing and the measurement RS of the victim UE side, and ensures The measurement RS arrives within the cyclic prefix processing window of the victim UE, so that the UE to UE interference can be accurately measured.
  • the embodiment provides a communication system, including the network device as described in Embodiment 9 and the terminal device as described in Embodiment 10.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the method/apparatus described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIG. 8 and/or one or more combinations of functional block diagrams may correspond to individual software modules of a computer program flow, or to individual hardware modules.
  • These software modules may correspond to the respective steps shown in FIG. 2, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention concerne un procédé et un appareil de configuration de mesure d'interférence, un procédé et un appareil de mesure d'interférence, et un système de communication. Le procédé de configuration de mesure d'interférence comprend les étapes suivantes : un dispositif de réseau configure un signal de référence (RS) de mesure pour un équipement utilisateur (UE), et indique explicitement et/ou implicitement un moment d'envoi du RS de mesure, la synchronisation d'envoi comprenant une synchronisation d'envoi et/ou une quantité d'ajustement de synchronisation et/ou une synchronisation initiale du RS de mesure, et la synchronisation d'envoi étant déterminée par le délai de propagation maximal dans la couverture d'un dispositif de réseau effectuant une transmission de liaison descendante. Par conséquent, un UE agresseur peut envoyer, selon une synchronisation d'envoi d'un RS configuré par un côté réseau et utilisé pour effectuer une mesure CLI, le RS de mesure ; ainsi, l'erreur entre une synchronisation de réception de liaison descendante d'un côté UE victime et la synchronisation de la mesure RS est réduite, et la RS de mesure est assurée pour arriver dans une fenêtre de traitement de préfixe cyclique de l'UE victime, de telle sorte que l'interférence de l'UE à l'UE puisse être mesurée avec précision.
PCT/CN2017/097184 2017-08-11 2017-08-11 Procédé et appareil de configuration de mesure d'interférence, procédé et appareil de mesure d'interférence, et système de communication WO2019028867A1 (fr)

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