WO2015165356A1 - Procédé et terminal de transmission d'informations d'authentification - Google Patents

Procédé et terminal de transmission d'informations d'authentification Download PDF

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Publication number
WO2015165356A1
WO2015165356A1 PCT/CN2015/077255 CN2015077255W WO2015165356A1 WO 2015165356 A1 WO2015165356 A1 WO 2015165356A1 CN 2015077255 W CN2015077255 W CN 2015077255W WO 2015165356 A1 WO2015165356 A1 WO 2015165356A1
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WO
WIPO (PCT)
Prior art keywords
interference signal
base station
interference
signal parameter
terminal
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PCT/CN2015/077255
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English (en)
Chinese (zh)
Inventor
丁昱
拉盖施
高秋彬
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电信科学技术研究院
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Publication of WO2015165356A1 publication Critical patent/WO2015165356A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

Definitions

  • the present application relates to the field of communications technologies, and in particular, to an interference signal measurement method and related equipment.
  • the terminal measures the downlink channel based on the downlink measurement pilot to obtain channel state information.
  • the terminal performs downlink channel measurement, it needs to measure the useful signal and the interference signal.
  • the terminal measures the interference signal on the CRS (Cell-specific reference signal); in the transmission mode 10, the terminal is in the CSI-IMR (CSI Interference Measurement Resource) The interference signal is measured on the measurement resource. After obtaining the channel state information by using the downlink channel measurement, the terminal feeds back the channel state information to the base station.
  • CRS Cell-specific reference signal
  • CSI-IMR CSI Interference Measurement Resource
  • the transmission mode 10 is a newly added transmission mode in the LTE-A, and is mainly used to support multi-cell cooperative communication to improve cell edge users.
  • the terminal is configured with one or more CSI-RS (channel state information reference signals) and one or more CSI-IMRs, one CSI (Channel State Information) process associated with one CSI-RS and one CSI-IMR, the terminal measures the useful signal on the CSI-RS and measures the interference signal on the corresponding CSI-IMR.
  • the interference signal measurement in the downlink channel measurement only the signal resource for measuring the interference signal is specified.
  • the interference signal measurement is performed on the CRS or on the CSI-RS or the CSI-IMR, but the terminal only depends on the signal.
  • the accuracy of the resource measurement interference signal is low, and the accuracy of the channel state information fed back by the terminal is also difficult to ensure, and it is difficult to effectively eliminate the interference based on the measured interference signal.
  • the present application provides an interference signal measurement method and related equipment for improving the accuracy of interference signal measurement in downlink channel measurement.
  • An interference signal measurement method includes:
  • the interference signal is measured on the downlink measurement pilot based on the downlink channel transmission or the resource capable of measuring interference according to the interference signal parameter.
  • a method of notifying interference signal parameters comprising:
  • Transmitting the interference signal parameter to the terminal and the terminal measures the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • a terminal comprising:
  • a receiving module configured to receive an interference signal parameter sent by the first base station
  • a processing module configured to measure the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • a base station comprising:
  • a sending module configured to send the interference signal parameter to the terminal, where the terminal measures the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • the base station notifies the terminal of the interference signal parameter, and the terminal measures the interference signal according to the interference signal parameter on the downlink measurement pilot transmitted on the downlink channel or the measurable interference resource, thereby improving the interference.
  • the accuracy of the signal measurement is a technical solution.
  • FIG. 1 is a schematic flowchart of a method for measuring interference signals in an embodiment of the present application
  • 2a is a schematic diagram of a CRS resource block
  • Figure 2b is a schematic diagram of a CSI-IMR resource block
  • FIG. 3 is a schematic flowchart of a method for a base station to notify an interference signal parameter in an embodiment of the present application
  • FIG. 4 is a schematic diagram of an interference signal and a useful signal in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal in an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a base station in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another terminal in the embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another base station according to an embodiment of the present application.
  • the first base station is defined as a base station serving the terminal
  • the second base station is defined as a base station causing interference to the terminal in the coverage area of the first base station.
  • the detailed method for the terminal to perform interference signal measurement is as follows:
  • Step 101 The terminal receives an interference signal parameter sent by the first base station.
  • the first base station notifies the terminal of the interference signal parameter by using the high layer signaling, and the high layer signaling only needs to be able to carry the interference signal parameter.
  • the terminal receives the RRC (Radio Resource Control) signaling of the first base station, and acquires the interference signal parameter carried in the RRC signaling.
  • RRC Radio Resource Control
  • the interference signal parameter is obtained by the first base station from a second base station that causes interference to the cell covered by the first base station.
  • the first base station associates one CSI-RS and one CSI-IMR through RRC signaling configuration, and configures one or more interference signal parameters in the CSI-IMR in the RRC signaling. And sending the RRC to the terminal, where the terminal configures a CSI process according to the RRC signaling and acquires an interference signal parameter.
  • Step 102 Measure the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • an interference signal is measured on a resource that can measure interference, and the resource of the measurable interference can be at least CSI-IMR.
  • the interference signal parameter is a parameter that can affect the characteristics of the interference signal.
  • the interference signal parameter includes a transmission mode of the interference signal, a modulation order, a code rate, a precoding vector (PMI), a rank (RI), a transmission power, a multicast broadcast single frequency network MBSFN subframe pattern, and a cell-specific reference symbol.
  • CP cyclic prefix
  • the synchronization indication is information used to indicate whether the interfering cell is synchronized with the target cell.
  • the interference signal parameter is obtained by the first base station from the second base station that causes interference to the cell covered by the first base station. Got it.
  • the first base station acquires the interference signal parameter from the second base station by using the X2 interface, that is, the base stations exchange the semi-static signaling to ensure the interference signal parameter sent by the second base station and the interference received by the interfered UE.
  • the signal parameters are the same, ensuring the accuracy of the interference signal measurement.
  • the interference signal is measured based on CRS or CSI-IMR for different transmission modes. Specifically, for the transmission mode 1 to the transmission mode 9 in the LTE, the interference signal is measured based on the CRS; for the transmission mode 10, the interference signal is measured based on the CSI-IMR, and FIG. 2a is a schematic diagram of the resource block occupied by the CRS, as shown in FIG. 2b. Schematic diagram of resource blocks occupied by CSI-IMR.
  • the second base station sends random data that is processed by using the same interference signal parameter, thereby further ensuring accuracy of the interference signal measurement.
  • the second base station sends the random data processed by using the same interference signal parameter based on the PDSCH. .
  • the second base station sends random data processed by using the same interference signal parameter based on the PDSCH or the CSI-IMR. .
  • the transmission mode 1 is a single antenna port transmission, and is mainly applied to a single antenna transmission;
  • the transmission mode 2 is a transmission diversity mode, which is suitable for a case where the cell edge channel is relatively complicated and has a large interference, and is sometimes used for high-speed transmission. In the case, the diversity can provide diversity gain;
  • the transmission mode 3 is a large delay diversity mode, which is suitable for the case of high-speed mobile terminal;
  • the transmission mode 4 is a closed-loop spatial multiplexing mode, which is suitable for occasions with good channel conditions, and is used for providing high data.
  • transmission mode 5 is a multi-user multiple input multiple output (Multi-User MIMO, MU-MIMO) transmission mode, mainly used to increase the capacity of the cell;
  • transmission mode 7 is a single stream beamforming mode of port 5, mainly used for cell edge, which can effectively resist interference;
  • transmission mode 8 is a dual stream beamforming mode. Can be used at the cell edge or in other scenarios;
  • Transmission Mode 9 is a newly added mode in the Advanced Long Term Evolution (LTE-A) system. It can support up to eight transport layer, mainly in order to enhance the data transmission rate.
  • LTE-A Advanced Long Term Evolution
  • the channel state information is determined according to the interference signal and the useful signal, and the channel state information is sent to the first base station, where the first base station sends the downlink according to the channel state information.
  • the data processed based on the interference signal parameters is transmitted by the second base station. Therefore, the interference signal parameter used when acquiring channel state information and the interference signal used by the interference signal during downlink data transmission The number parameters are consistent to improve channel transmission quality.
  • the second base station When the first base station sends the downlink data, the second base station sends the data processed according to the interference signal parameter, and the interference signal parameter is the same as the interference signal parameter sent by the first base station to the terminal.
  • the channel state information includes any one or a combination of a rank, a precoding vector (PMI), and a channel quality indicator (CQI).
  • PMI precoding vector
  • CQI channel quality indicator
  • the detailed method for the first base station to notify the interference signal parameter is as follows:
  • Step 301 The first base station acquires an interference signal parameter.
  • the first base station obtains an interference signal parameter from the second base station that causes interference to the cell covered by the base station.
  • the first base station acquires an interference signal parameter from the second base station by using an X2 interface.
  • the interference signal parameter is a parameter that can affect the characteristics of the interference signal
  • the specific interference signal parameters are the same as those in the first embodiment, and are not described herein again.
  • Step 302 The first base station sends an interference signal parameter to the terminal, and the terminal measures the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • the first base station notifies the terminal of the interference signal parameter by using the high layer signaling, and the high layer signaling only needs to be able to carry the interference signal parameter.
  • the first base station carries the interference signal parameter in the RRC signaling, and sends the RRC signaling to the terminal.
  • interference signals can be measured based on CRS or CSI-IMR.
  • the interference signal is measured based on the CRS; for the transmission mode 10, the interference signal is measured based on the CSI-IMR.
  • the interference signal is a signal processed by the second base station and processed according to the same interference signal parameter.
  • the second base station sends random data that is processed by using the interference signal parameter, thereby further ensuring the accuracy of the interference signal measurement.
  • the second base station sends the random data processed by using the same interference signal parameter based on the PDSCH. .
  • the second base station sends random data processed by using the same interference signal parameter based on the PDSCH or the CSI-IMR. .
  • the first base station receives channel state information returned by the terminal, where the channel state information is measured by the terminal according to the The interference signal and the measured useful signal are determined; and the downlink data is sent to the terminal according to the channel state information, and the signal processed by the interference signal parameter is sent by the second base station.
  • the second base station when the first base station sends the downlink data, the second base station sends a signal processed by the interference signal parameter, where the interference signal parameter is the same as the interference signal parameter sent by the base station to the terminal. Therefore, the interference signal parameter used when acquiring the channel state information is consistent with the interference signal parameter used by the interference signal during the downlink data transmission, and the channel transmission quality can be further improved.
  • the channel state information includes any one or a combination of rank, PMI, and CQI.
  • the transmission mode 10 is taken as an example for description.
  • the entire communication process can be divided into two phases: an interference signal measurement phase and a data downlink phase based on a physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • UE1 in the cell 1 is the target UE, and the base station of the cell 2 is the interference source.
  • the UE1 receives the signaling sent by the base station in the cell 1, and acquires the modulation order QPSK of the interference signal carried in the signaling, and performs interference signal measurement according to the modulation order.
  • the base station in the cell 2 transmits QPSK-modulated data to the UE 2 in the cell 2 at the time when the UE 1 measures the interference signal. In the case where no UE in the cell 2 needs the base station to transmit data, the base station in the cell 2 transmits the random data modulated by the QPSK.
  • the modulation order used by the UE1 to measure the interference signal is the same as the modulation order used by the cell 2 for the interference signal generated by the UE1, the accuracy of the interference signal measurement can be improved, and the channel state information determined based on the measured interference signal can be improved. Feedback quality.
  • the base station in the cell 1 transmits the downlink data to the UE1 based on the PDSCH
  • the channel state information fed back by the UE1 is used, and the base station in the cell 2 transmits the data modulated by the QPSK to the UE in the cell to the UE, so that the UE1 feeds back the modulation of the time interference signal.
  • the order of interference and the modulation order of the interference signal are the same when UE1 actually receives the downlink signal.
  • the method of this particular embodiment can be used to interfere with other parameters of the signal, such as code rate, rank, precoding vector, transmit power, and the like.
  • the channel quality can be improved.
  • UE1 in cell 1 performs interference signal measurement, assuming that the interference signal on the CSI-IMR meets a certain attribute, and the specific attribute is configured by the network, for example, through RRC signaling, the special attribute is notified by The interference signal parameter representation to UE1.
  • the terminal mainly includes:
  • the receiving module 501 is configured to receive an interference signal parameter sent by the first base station
  • the processing module 502 is configured to measure the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • the receiving module 501 is specifically configured to:
  • the interference signal parameter is obtained by the first base station from the second base station that causes interference to the cell covered by the base station.
  • the interference signal is a signal processed by the second base station based on the interference signal parameter.
  • processing module 502 is further configured to:
  • the interference signal parameter is a parameter that can affect the characteristics of the interference signal
  • the specific interference signal parameter is the same as that described in the first embodiment, and details are not described herein again.
  • a base station is provided in the fourth embodiment of the present application.
  • the base station mainly includes:
  • the sending module 602 is configured to send an interference signal parameter to the terminal, and the terminal measures the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • the sending module 602 is specifically configured to:
  • the interference signal parameter is carried in the RRC signaling, and the RRC signaling is sent to the terminal.
  • the obtaining module 601 is specifically configured to:
  • the interference signal parameter is obtained by the second base station that causes interference to the cell covered by the base station.
  • the obtaining module 601 is specifically configured to:
  • the interference signal parameters are acquired from the second base station through the X2 interface.
  • the method further includes a receiving module 603, configured to:
  • the sending module 602 is further configured to:
  • the downlink data is transmitted to the terminal according to the channel state information, and the signal processed based on the interference signal parameter is transmitted by the second base station.
  • the interference signal parameter is a parameter that can affect the characteristics of the interference signal, and the specific list of interference signals
  • the number parameters are the same as those in the first embodiment, and are not described herein again.
  • another terminal in the embodiment of the present application includes:
  • the processor 701 is configured to read a program in the memory 704 and perform the following process:
  • the interference signal parameter sent by the first base station is received by the transceiver 702; the interference signal is measured on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • the transceiver 702 is configured to receive and transmit data under the control of the processor 701.
  • the processor 701 is specifically configured to:
  • the interference signal parameter is obtained by the first base station from the second base station that causes interference to the cell covered by the base station.
  • the interference signal is a signal processed by the second base station based on the interference signal parameter.
  • processor 701 is further configured to:
  • the interference signal parameter is a parameter that can affect the characteristics of the interference signal
  • the specific interference signal parameter is the same as that described in the first embodiment, and details are not described herein again.
  • bus 700 which may include any number of interconnected buses and bridges, will include one or more processors and memory 704 represented by general purpose processor 701. The various circuits of the memory are linked together.
  • the bus 700 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein.
  • Bus interface 703 provides an interface between bus 700 and transceiver 702.
  • Transceiver 702 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 702 receives external data from other devices. The transceiver 702 is configured to send the processed data of the processor 701 to other devices.
  • a user interface 705 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 701 is responsible for managing the bus 700 and the usual processing, running a general purpose operating system as described above.
  • the memory 704 can be used to store data used by the processor 701 in performing operations.
  • the processor 701 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • another base station in this embodiment of the present application includes:
  • the processor 801 is configured to read a program in the memory 804 and perform the following process:
  • the transceiver 802 Acquiring the interference signal parameter; transmitting, by the transceiver 802, the interference signal parameter to the terminal, and the terminal measures the interference signal on the downlink measurement pilot based on the downlink channel transmission or the measurable interference resource according to the interference signal parameter.
  • the transceiver 802 is configured to receive and transmit data under the control of the processor 801.
  • the processor 801 is specifically configured to:
  • the interference signal parameter is carried in the RRC signaling, and the RRC signaling is sent to the terminal.
  • the processor 801 is specifically configured to:
  • the interference signal parameter is obtained by the second base station that causes interference to the cell covered by the base station.
  • the processor 801 is specifically configured to:
  • the interference signal parameters are acquired from the second base station through the X2 interface.
  • the processor 801 is further configured to:
  • the transceiver 802 Receiving, by the transceiver 802, channel state information returned by the terminal, the channel state information is determined by the terminal according to the measured interference signal and the measured useful signal; and the downlink data is sent to the terminal according to the channel state information, and the interference signal is sent by the second base station.
  • the signal after the parameter processing.
  • the interference signal parameter is a parameter that can affect the characteristics of the interference signal
  • the specific interference signal parameter is the same as that described in the first embodiment, and details are not described herein again.
  • bus 800 may include any number of interconnected buses and bridges, and bus 800 will include one or more processors represented by processor 801 and memory represented by memory 804. The various circuits are linked together.
  • the bus 800 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 803 provides an interface between bus 800 and transceiver 802.
  • Transceiver 802 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • the data processed by the processor 801 is transmitted over the wireless medium via the antenna 805. Further, the antenna 805 also receives the data and transmits the data to the processor 801.
  • the processor 801 is responsible for managing the bus 800 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 804 can be used to store data used by the processor 801 when performing operations.
  • the processor 801 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • the base station notifies the terminal of the interference signal parameter, and the terminal measures the interference signal according to the interference signal parameter on the downlink measurement pilot transmitted on the downlink channel, thereby improving the accuracy of the interference signal measurement.

Abstract

L'invention concerne un procédé de mesure de signaux de brouillage et un dispositif associé, utilisés pour améliorer la précision de mesure de signal de brouillage durant une mesure de canal de liaison descendante. Le procédé consiste : à recevoir un paramètre de signal de brouillage transmis par une première station de base ; à mesurer le signal de brouillage sur une fréquence pilote de mesure de liaison descendante basée sur une transmission de canal de liaison descendante ou sur une ressource de mesure de brouillage selon le paramètre de signal de brouillage.
PCT/CN2015/077255 2014-04-30 2015-04-23 Procédé et terminal de transmission d'informations d'authentification WO2015165356A1 (fr)

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CN201410182435.2 2014-04-30
CN201410182435.2A CN105025519B (zh) 2014-04-30 2014-04-30 干扰信号测量方法及相关设备

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WO2019140668A1 (fr) * 2018-01-19 2019-07-25 Oppo广东移动通信有限公司 Procédé de mesure d'informations d'état de canal (csi), dispositif de terminal et dispositif de réseau
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