WO2015143690A1 - Procédé pour mesurer une qualité de canal, équipement utilisateur et extrémité d'envoi - Google Patents

Procédé pour mesurer une qualité de canal, équipement utilisateur et extrémité d'envoi Download PDF

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Publication number
WO2015143690A1
WO2015143690A1 PCT/CN2014/074245 CN2014074245W WO2015143690A1 WO 2015143690 A1 WO2015143690 A1 WO 2015143690A1 CN 2014074245 W CN2014074245 W CN 2014074245W WO 2015143690 A1 WO2015143690 A1 WO 2015143690A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
channel quality
type
channel
sending
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PCT/CN2014/074245
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English (en)
Chinese (zh)
Inventor
温容慧
周明宇
孙伟
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/074245 priority Critical patent/WO2015143690A1/fr
Priority to CN201480000299.9A priority patent/CN105612777B/zh
Publication of WO2015143690A1 publication Critical patent/WO2015143690A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/0031—Multiple signaling transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link

Definitions

  • the present invention relates to the field of communications, and more particularly to a method, user equipment, and transmitting end for measuring channel quality.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • the uplink and downlink bandwidths are equal, but the uplink and downlink traffic is not necessarily symmetric.
  • the downlink service is generally larger than the uplink service, which leads to waste of resources.
  • the surrounding cells may still maintain the original band resource transmission direction, resulting in different neighboring cell signal transmission directions. If the user equipment (User Equipment, UE) belonging to different cells in the neighboring cell edge area is different in signal transmission direction. Since the two UEs are relatively close, the UE transmitting the uplink signal has strong interference to the UE receiving the downlink signal.
  • User Equipment User Equipment
  • the LTE TDD system can adjust the uplink and downlink resource ratio dynamically or semi-statically according to the change of uplink and downlink service requirements, that is, the "dynamic TDD system".
  • the dynamic TDD system there are also the same time, the signal transmission direction of the UE belonging to different cells in the edge region of the adjacent cell is different.
  • the user receiving the downlink signal is interfered by the user who sends the uplink signal in the neighboring cell.
  • the strength of user interference in the neighboring area is related to the distance between users and the transmission power of the user. Generally, the user near the base station has a lower transmit power, and the distance from the neighboring user is farther, and the user who receives the downlink signal in the neighboring area has less interference; the user farther from the base station has higher transmit power, and the neighboring area is higher.
  • the user's distance is also relatively close, and the user who receives the downlink signal in the neighboring area has a large interference.
  • the user who sends the uplink signal in the edge area has a strong interference intensity to the downlink receiving user in the same edge area.
  • the transmission direction of the neighboring cell is the same, the user measures the downlink channel quality, and the dry ⁇ ⁇ source is the neighboring base station, and it can be considered that the ⁇ ⁇ particularly fluctuation is small.
  • the transmission directions of the neighboring cells are different, if the measurement is performed according to the same transmission direction of the neighboring cells, the measured channel quality may be greatly deviated from the actual channel quality, which may result in modulation and coding strategies used in scheduling. And Coding Scheme, MCS) is inaccurate, which affects transmission quality.
  • MCS Coding Scheme
  • the embodiment of the invention provides a method for measuring channel quality, a user equipment and a transmitting end, which can improve transmission quality.
  • a method of measuring channel quality including:
  • the first UE receives the first reference signal sent by the sending end
  • the first UE receives the second reference signal sent by the second UE, where the second UE is a neighboring UE of the first UE;
  • the first UE sends the first type of channel quality and the second type of channel quality to the transmitting end.
  • the method before the first UE receives the second reference signal sent by the second UE, the method further includes:
  • the first UE acquires reference signal information of the second UE
  • the first UE receives the second reference signal according to the reference signal information of the second UE.
  • the first UE receives the second reference signal according to the reference signal information of the second UE, including: the first UE Receiving, according to the reference signal information of the second UE, the second reference signal on a subband corresponding to the second reference signal at a sending moment of the second reference signal;
  • Determining, by the first UE, the second type of channel quality of the channel from the transmitting end to the first UE according to the first reference signal and the second reference signal including:
  • the first UE determines, according to the first reference signal and the second reference signal, the quality of the second type of channel on the subband of the channel from the transmitting end to the first UE at the sending moment.
  • the acquiring, by the first UE, the reference signal information of the second UE includes:
  • the first UE receives reference signal information of the second UE that is sent by the base station.
  • the first UE receives the second UE sent Before the second reference signal, the method further includes:
  • the first UE receives a notification that the two types of channel quality are reported by the base station, and the notification is used to indicate that the first UE sends the first type of channel quality and the second type of channel quality to the sending end.
  • a method for measuring channel quality including:
  • the first UE Receiving, by the first UE, the first type of channel quality and the second type of channel quality of the channel sent by the first UE to the first UE, where the first type of channel quality is determined by the first UE according to the first
  • the reference signal determines that the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by the second UE, and the second UE is the proximity of the first UE.
  • the second type of channel quality indicates a channel quality of a channel of the transmitting end to the first UE when the second UE is used as an interference source;
  • the transmitting end sends data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the method before the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality, the method further includes: the sending end Obtaining scheduling information of the second UE;
  • the transmitting end selects to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE.
  • the sending end selects, according to the scheduling information of the second UE, the channel quality according to the first type or the quality of the second type channel Sending data to the first UE includes:
  • the transmitting end determines the modulation and coding policy to send data to the first UE according to the second type of channel quality;
  • the sending end determines the modulation and coding policy to send data to the first UE according to the first type of channel quality.
  • the sending end acquires scheduling information of the second UE, where
  • the transmitting end receives scheduling information of the second UE sent by the serving base station of the second UE.
  • the sending end is a serving base station of the first UE;
  • the method also includes:
  • the transmitting end sends the reference signal information of the second UE to the first UE, where the reference signal information of the second UE is used by the first UE to receive the second reference signal according to the reference signal information of the second UE.
  • the sending end is a serving base station of the first UE
  • the method also includes:
  • the sending end sends a notification to the first UE to report the quality of the two types of channels, where the notification is used to indicate that the first UE sends the first type of channel quality and the second type of channel quality to the sending end.
  • a UE including:
  • a receiving module configured to receive a first reference signal sent by the sending end, and receive a second reference signal sent by the second UE, where the second UE is a neighboring UE of the UE;
  • a determining module configured to determine, according to the first reference signal, a first type of channel quality of the channel from the transmitting end to the UE, and determine, according to the first reference signal and the second reference signal, a channel of the transmitting end to the UE a second type of channel quality, where the second type of channel quality indicates a channel quality of a channel of the transmitting end to the UE when the second UE is used as an interference source;
  • a sending module configured to send the first type of channel quality and the second type of channel quality to the sending end.
  • the UE further includes:
  • An acquiring module configured to acquire reference signal information of the second UE
  • the receiving module is specifically configured to receive the second reference signal according to the reference signal information of the second UE.
  • the receiving module is specifically configured to: according to the reference signal information of the second UE, at a sending moment of the second reference signal, Receiving the second reference signal on the subband corresponding to the second reference signal;
  • the determining module is configured to determine, according to the first reference signal and the second reference signal, the quality of the second type of channel on the subband of the channel from the transmitting end to the first UE at the sending moment.
  • the receiving module is further configured to receive reference signal information of the second UE that is sent by the base station;
  • the acquiring module is specifically configured to obtain reference signal information of the second UE that is received by the receiving module.
  • the receiving module is further configured to receive the report sent by the base station.
  • the notification of the class channel quality the notification is used to indicate that the UE sends the first type channel quality and the second type channel quality to the sender.
  • a sending end including:
  • Transmitting module configured to send a first reference signal to the first user equipment UE
  • a receiving module configured to receive a first type of channel quality and a second type of channel quality of the channel sent by the first UE to the first UE, where the first type of channel quality is determined by the first UE
  • the first reference signal determines that the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by the second UE, and the second UE is the first UE a neighboring UE, the second type of channel quality indicates a channel quality of a channel of the transmitting end to the first UE when the second UE is used as an interference source;
  • the sending module is further configured to send data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the sending end further includes: an acquiring module, configured to acquire scheduling information of the second UE;
  • the sending module is specifically configured to: according to the scheduling information of the second UE, select to send data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the sending module is specifically configured to:
  • the modulation and coding policy is determined to send data to the first UE according to the second type of channel quality
  • the modulation and coding policy is determined to send data to the first UE according to the first type of channel quality.
  • the receiving module is further configured to receive scheduling information of the second UE that is sent by the serving base station of the second UE;
  • the acquiring module is specifically configured to acquire scheduling information of the second UE that is received by the receiving module.
  • the sending end is a serving base station of the first UE;
  • the sending module is further configured to send the reference signal information of the second UE to the first UE, where the reference signal information of the second UE is used by the first UE to receive the second reference signal according to the reference signal information of the second UE. .
  • the sending end is a serving base station of the first UE
  • the sending module is further configured to send, to the first UE, a notification that reports two types of channel quality, where the notification is used to indicate that the first UE sends the first type of channel quality and the second type of channel quality to the sending end.
  • the embodiment of the present invention determines the first type of channel quality according to the first reference signal sent by the sending end, and determines the second type of channel quality according to the first reference signal and the second reference signal sent by the neighboring UE, Accurate channel quality improves transmission quality.
  • FIGS. 1A to 1D are schematic views of a scenario to which an embodiment of the present invention is applicable.
  • FIG. 2 is a schematic flow chart of a method for measuring channel quality according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a method for measuring channel quality of a corresponding subband according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for measuring channel quality according to another embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a UE according to an embodiment of the present invention.
  • Figure 6 is a schematic block diagram of a transmitting end of an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a UE according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a transmitting end according to another embodiment of the present invention. detailed description
  • the technical solution of the embodiment of the present invention can be applied to a system in which a transmission direction of a neighboring cell or a neighboring UE is different.
  • Figures 1A-1D are schematic diagrams of scenarios in which embodiments of the present invention may be applied.
  • the UE 102 served by the base station 104 is located in the edge region of the cell of the base station 104, and is closer to the UE 101 served by the base station 103, that is, the UE 102 is a neighboring UE of the UE 101.
  • the UE 101 receives the downlink signal sent by the base station 103
  • the UE 102 sends an uplink signal to the base station 104
  • the uplink signal sent by the UE 102 receives the downlink signal from the UE 101.
  • the base station 113 is adjacent to the base station 114, the UE 111 is located in the edge area of the cell of the base station 113, and the UE 112 is located in the edge area of the cell of the base station 114.
  • the UE 111 is close to the UE 112 and is a neighboring UE.
  • the UE 111 receives the downlink signal sent by the base station 113, the UE 112 sends an uplink signal to the base station 114, and the uplink signal sent by the UE 112 receives the downlink signal to the UE 111.
  • the UE 111 receives the downlink signal sent by the base station 113, the UE 112 sends an uplink signal to the base station 114, and the uplink signal sent by the UE 112 receives the downlink signal to the UE 111.
  • base station 123 is a full-duplex base station, i.e., base station 123 can simultaneously schedule two different users on the same resource simultaneously within its coverage area. For example, the base station 123 sends the downlink information to the UE 121 by using the frequency fl, and the scheduling UE 122 transmits the uplink information to the base station 123 by using the frequency fl. The uplink signal sent by the UE 122 may affect the UE 121 to demodulate the downlink signal.
  • UE 131 and UE 133 are Device to Device (D2D) users.
  • D2D Device to Device
  • the uplink signal sent by the neighboring UE 132 may cause interference between the communication between the UE 131 and the UE 133.
  • the UE 132 may cause interference to receive the downlink signal.
  • a user equipment may be called a terminal, a mobile station (MS), a mobile terminal (Mobile Terminal), etc., and the user equipment may be connected to the radio access network.
  • RAN Radio Access Network
  • the user equipment can be a mobile phone (or "cell phone”;), a computer with a mobile terminal, etc.
  • the user device can also be portable, pocket, handheld, built-in computer Or in-vehicle mobile devices that exchange voice and/or data with a wireless access network.
  • the base station may be a base station in GSM or CDMA (Base
  • the Transceiver Station may also be a base station (NodeB, NB) in WCDMA, or may be an evolved base station (Evolutional Node B, ENB or e-NodeB) in LTE, and the present invention is not limited thereto.
  • NodeB NodeB
  • ENB evolved base station
  • e-NodeB evolved Node B
  • the method 200 includes:
  • the first UE receives the first reference signal sent by the sending end.
  • the first UE determines, according to the first reference signal, a first type of channel quality of the channel from the transmitting end to the first UE.
  • the first UE receives a second reference signal sent by the second UE, where the second UE is a neighboring UE of the first UE;
  • the first UE determines, according to the first reference signal and the second reference signal, a second type of channel quality of the channel of the sending end to the first UE, where the second type of channel quality indicates the second UE Channel quality of the channel from the transmitting end to the first UE when the interference source is used;
  • the first UE sends the first type of channel quality and the second type of channel quality to the sending end.
  • the first UE that performs the method of the method 200 is a UE that needs to receive data of the sender.
  • the first UE may be the UE 101 in FIG. 1A, the UE 111 in FIG. 1B, the UE 121 in FIG. 1C, or the UE 131 in FIG. 1D
  • the corresponding transmitting end is the base station 103, the base station 113, the base station 123, or the UE. 133.
  • the corresponding second UE is the UE 102, the UE 112, the UE 122, or the UE 132.
  • the first type of channel quality indicates the channel quality determined only according to the reference signal (represented as the first reference signal) sent by the transmitting end; the second type of channel quality indicates that the second UE (neighboring UE) is used as the interference.
  • the second UE is a neighboring UE of the first UE, that is, the signal transmission of the second UE may interfere with the signal reception of the first UE.
  • the first UE is determined according to the first reference signal sent by the sending end.
  • the second type of channel quality is more accurate.
  • the transmitting end may determine the MCS used for transmitting data according to different conditions, using the first type of channel quality or the second type of channel quality, thereby improving transmission quality.
  • the method for measuring channel quality determines the first type of channel quality according to the first reference signal sent by the transmitting end, and determines the second type of channel according to the first reference signal and the second reference signal sent by the neighboring UE. Quality, accurate channel quality can be obtained, and transmission quality can be improved.
  • the method 200 before the first UE receives the second reference signal sent by the second UE, the method 200 further includes:
  • the first UE acquires reference signal information of the second UE
  • the first UE receives the second reference signal according to the reference signal information of the second UE.
  • the reference signal of the second UE may be a Sounding Reference Signal (SRS) sent by the second UE. It should be understood that the reference signal of the second UE may also be other reference signals sent by the second UE, which is not limited by the present invention.
  • the reference signal information of the second UE includes: a reference signal start resource position, a comb, a cyclic shift, a period or a frequency hopping parameter, and the like.
  • the first UE first acquires reference signal information of the second UE, and then receives the second reference signal sent by the second UE according to the reference signal information of the second UE.
  • the acquiring, by the first UE, the reference signal information of the second UE includes:
  • the first UE receives reference signal information of the second UE sent by the base station.
  • the first UE acquires reference signal information of the second UE from the serving base station. At first
  • the serving base station may directly send the reference signal information of the second UE to the first UE.
  • the base station 123 acquires the reference information signal of the UE 122, and transmits the reference signal information of the UE 122 to the UE 121.
  • the base station 134 acquires the reference of the UE 132. The information signal is transmitted to the UE 131 for reference signal information of the UE 132.
  • the service of the first UE may receive the reference signal information of the second UE from the serving base station of the second UE, and then send the reference signal information of the second UE to the first UE.
  • the base station 123 receives the reference signal information of the UE 112 from the base station 124, and transmits the reference signal information of the UE 112 to the UE 111.
  • both the base station 103 and the base station 104 can send signals to the UE 101. Therefore, the base station 104 can directly transmit the reference signal information of the UE 102 to the UE 101, and can also transmit the reference signal information of the UE 102. To the base station 103, the base station 103 transmits the reference signal information of the UE 102 to the UE 101.
  • the base station first determines the second UE before acquiring the reference signal information of the second UE. In other words, the base station determines UEs that may cause interference to the first UE receiving data.
  • the serving base station may determine the second UE; if the first UE and the possible second UE do not have a common serving base station, The serving base station of the possible second UE may determine the second UE.
  • the base station 104 determines the UE that may cause interference to the downlink transmission of the base station 103 (the UE 101 receives the data transmitted by the base station 103). If a certain UE in the cell of the base station 104 may cause interference to the cell of the base station 103, it may be judged that it should be in the edge region of the cell of the base station 104 and adjacent to the cell of the base station 103. The base station 104 determines whether the UE will be an interfering UE according to the Reference Signal Receiving Power (RSRP) reported by the UE.
  • RSRP Reference Signal Receiving Power
  • the UE is determined to be the interference source of the cell of the base station 103. That is, it is determined as the second UE.
  • the receiving, by the first UE, the second reference signal according to the reference signal information of the second UE includes:
  • the first UE receives the second reference signal on a sub-band corresponding to the second reference signal according to the reference signal information of the second UE at a sending moment of the second reference signal.
  • the first UE determines the second type of channel quality of the channel from the transmitting end to the first UE according to the first reference signal and the second reference signal, including:
  • the first UE determines, according to the first reference signal and the second reference signal, the quality of the second type of channel on the subband of the channel from the transmitting end to the first UE at the sending moment.
  • the second reference signal sent by the second UE may be frequency hopping, and each time only occupies a small bandwidth, so the first UE needs to follow the frequency hopping parameter of the second UE in the second reference signal.
  • the transmitting moment of the number receives the second reference signal sent by the second UE on the corresponding subband, and then uses the second UE as the interference source to determine the quality of the second type channel on the subband at the transmitting moment.
  • the first UE measures the corresponding subband (subband 1, subband 2, subband 3) according to the reference signal information of the second UE (UE1 and UE2) acquired in advance. a second reference signal, and determining a second type of channel quality of the three subbands accordingly;
  • the first UE measures the second reference signal on the subband 2, and determines the second type of channel quality of the subband 2 accordingly;
  • the first UE measures the second reference signal on subband 3, subband 6, subband 7, and determines the second type of channel quality of the three subbands accordingly.
  • the first reference signal sent by the used transmitting end may be received at the current measurement time, or may be stored after being received at other times.
  • the first UE measures and reports that the sub-band width of the second type of channel quality conforms to the bandwidth design of the second reference signal.
  • the first UE measures and reports the subband width of the second type of channel quality to conform to the bandwidth design of the SRS (a multiple of 4 RB). .
  • the method 200 before the first UE receives the second reference signal sent by the second UE, the method 200 further includes:
  • the first UE receives a notification that the two types of channel quality are reported by the base station, and the notification is used to indicate that the first UE sends the first type of channel quality and the second type of channel quality to the sending end.
  • the base station notifies the first UE to measure and report two types of channel qualities, and the first UE receives the second reference signal based on the notification of the base station and determines the second type of channel quality.
  • the base station may not send the foregoing notification to the first UE.
  • the first UE may receive the second reference signal and determine the second type. Channel quality.
  • the first UE uses the second UE as an interference source, and determines a second type of channel quality according to the first reference signal and the second reference signal. After obtaining the first type of channel quality and the second type of channel quality, the first UE reports the first type of channel quality and the second type of channel quality to the transmitting end. Alternatively, the first UE may report after each measurement or periodically. In the case where there are multiple sub-bands of the plurality of second UEs, they may be reported in a pre-agreed order.
  • the transmitting end After receiving the first type of channel quality and the second type of channel quality reported by the first UE, the transmitting end further New corresponding channel quality. For example, when the first UE reports the second type of channel quality of the multiple subbands, the sending end updates the channel quality of the corresponding subband according to the frequency hopping parameter of the second UE.
  • the MCS used for transmitting data to the first UE is determined by using the first type of channel quality or the second type of channel quality.
  • the sending end determines, according to the second type of channel quality, that the MCS sends data to the first UE. And if the second UE does not send data when the sending end sends data to the first UE, the sending end determines, according to the first type of channel quality, that the MCS sends data to the first UE. In this way, in a case where the second UE interferes with the first UE receiving data, the first UE can also accurately receive the data of the transmitting end.
  • the method for measuring channel quality determines a first type of channel quality according to a first reference signal sent by a transmitting end, and determines a second type of channel quality according to the first reference signal and the second reference signal sent by the neighboring UE, Accurate channel quality can be obtained, so that the transmitting end can transmit data according to the accurate channel quality, thereby improving the transmission quality.
  • the method for measuring channel quality according to an embodiment of the present invention is described in detail above from the perspective of the first UE.
  • the method for measuring channel quality according to an embodiment of the present invention is described below from the perspective of the transmitting end.
  • the method 400 includes:
  • the sending end sends a first reference signal to the first UE.
  • the transmitting end receives the first type of channel quality and the second type of channel quality of the channel sent by the first UE to the first UE, where the first type of channel quality is determined by the first UE according to the The first reference signal determines that the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by the second UE, and the second UE is the first UE a neighboring UE, the second type of channel quality indicates a channel quality of a channel of the transmitting end to the first UE when the second UE is used as an interference source;
  • the sending end sends the first to the first type according to the first type of channel quality or the second type of channel quality.
  • the UE sends data.
  • the sending end of the method 400 is a device that sends data to the first UE.
  • the first UE may be the UE 101 in FIG. 1A, the UE 111 in FIG. 1B, the UE 121 in FIG. 1C, or the UE 131 in FIG. 1D
  • the corresponding transmitting end is the base station 103, the base station 113, the base station 123, or the UE. 133.
  • the corresponding second UE is the UE 102, the UE 112, the UE 122, or the UE 132.
  • the sending end receives the first type of channel quality and the second type sent by the first UE.
  • Class channel quality The first type of channel quality is determined by the first UE according to the first reference signal sent by the sending end, and the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal sent by the second UE.
  • the transmitting end may send data to the first UE according to the first type of channel quality or the second type of channel quality according to different situations.
  • the method for measuring channel quality is determined by receiving a first type of channel quality determined by a first reference signal sent by a first UE according to a first reference signal of a transmitting end, and determining, according to a first reference signal and a second reference signal sent by a neighboring UE.
  • the second type of channel quality can transmit data to the first UE according to the accurate channel quality, thereby improving the transmission quality.
  • the method 400 further includes:
  • the transmitting end sends the reference signal information of the second UE to the first UE, where the reference signal information of the second UE is used by the first UE to receive the second reference signal according to the reference signal information of the second UE.
  • the transmitting end may be a serving base station of the first UE (for example, the scenario shown in FIG. 1A, FIG. 1B, and FIG. 1C), or may be a UE that performs D2D communication with the first UE (for example, the scenario shown in FIG. 1D).
  • the transmitting end In the case that the transmitting end is the serving base station of the first UE, the transmitting end sends the reference signal information of the second UE to the first UE; if the transmitting end is not the serving base station of the first UE, the first UE from the serving base station thereof Obtaining reference signal information of the second UE.
  • the reference signal of the second UE may be an SRS sent by the second UE. It should be understood that the reference signal of the second UE may also be other reference signals sent by the second UE, which is not limited by the present invention.
  • the reference signal information of the second UE includes: a reference signal starting resource position, a comb tooth, a cyclic shift, a period or a frequency hopping parameter, and the like.
  • the method 400 further includes:
  • the sending end sends a notification to the first UE to report the quality of the two types of channels, where the notification is used to indicate that the first UE sends the first type of channel quality and the second type of channel quality to the sending end.
  • the transmitting end In the case that the transmitting end is the serving base station of the first UE, the transmitting end (base station) notifies the first UE to measure and report two types of channel quality; in the case that the transmitting end is not the serving base station of the first UE, the service of the first UE The base station informs the first UE to measure and report two types of channel quality. The first UE receives the second reference signal based on the notification and determines a second type of channel quality.
  • the base station may not send the foregoing notification to the first UE, in this case, the first After receiving the reference signal information of the second UE sent by the base station, the UE may receive the second reference signal and determine the channel quality of the second type.
  • the first UE determines the first type of channel quality according to the first reference signal.
  • the first UE uses the second UE as an interference source, and determines a second type of channel quality according to the first reference signal and the second reference signal.
  • the first UE reports the first type of channel quality and the second type of channel quality to the transmitting end.
  • the transmitting end After receiving the first type of channel quality and the second type of channel quality sent by the first UE, the transmitting end sends data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the method 400 further includes: before the transmitting end sends data to the first UE according to the first type of channel quality or the second type of channel quality, the method 400 further includes:
  • the sending end acquires scheduling information of the second UE
  • the transmitting end selects to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE.
  • the transmitting end sends data to the first UE according to the scheduling information of the second UE and the first type of channel quality and the second type of channel quality reported by the first UE. For example, if the second UE sends data when the transmitting end sends data to the first UE, the transmitting end determines the modulation and coding policy to send data to the first UE according to the second type of channel quality. And if the second UE does not send data when the sending end sends data to the first UE, the sending end determines, according to the first type of channel quality, a modulation and coding policy to send data to the first UE.
  • the transmitting end sends data to the first UE
  • the second UE is transmitting data, determining, according to the second type of channel quality, the MCS used for transmitting data to the first UE, and sending the MCS to the first UE by using the MCS.
  • Data if the second UE does not send data, determining an MCS used for transmitting data to the first UE according to the first type of channel quality, and transmitting data to the first UE by using the MCS.
  • the sending end may directly obtain the scheduling information of the second UE.
  • the transmitting end may receive scheduling information of the second UE sent by the serving base station of the second UE, That is, the transmitting end may acquire scheduling information of the second UE from the serving base station of the second UE.
  • the method for measuring channel quality by receiving a first type channel quality determined according to a first reference signal of a transmitting end and a second reference signal sent by a neighboring UE according to a first reference signal sent by a first UE
  • the second type of channel quality can transmit data to the first UE according to the accurate channel quality, thereby improving the transmission quality.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • FIG. 5 shows a schematic block diagram of a UE 500 in accordance with an embodiment of the present invention. As shown in FIG. 5, the UE 500 includes:
  • the receiving module 510 is configured to receive a first reference signal sent by the sending end, and receive a second reference signal sent by the second UE, where the second UE is a neighboring UE of the UE;
  • a determining module 520 configured to determine, according to the first reference signal, a first type of channel quality of the channel from the transmitting end to the UE, and determine, according to the first reference signal and the second reference signal, a channel of the transmitting end to the UE a second type of channel quality, where the second type of channel quality indicates a channel quality of the channel from the transmitting end to the UE when the second UE is used as an interference source;
  • the sending module 530 is configured to send the first type of channel quality and the second type of channel quality to the sending end.
  • the UE in the embodiment of the present invention determines the quality of the first type channel according to the first reference signal sent by the sending end, and determines the quality of the second type channel according to the first reference signal and the second reference signal sent by the neighboring UE, so that an accurate Channel quality can improve transmission quality.
  • the UE 500 further includes:
  • An acquiring module configured to acquire reference signal information of the second UE
  • the receiving module 510 is specifically configured to receive the second reference signal according to the reference signal information of the second UE.
  • the receiving module 510 is specifically configured to receive, according to the reference signal information of the second UE, a subband corresponding to the second reference signal at a sending moment of the second reference signal.
  • the second reference signal ;
  • the determining module 520 is specifically configured to determine the first reference signal and the second reference signal.
  • the receiving module 510 is further configured to receive reference signal information of the second UE that is sent by the base station;
  • the acquiring module is specifically configured to acquire reference signal information of the second UE that is received by the receiving module 510.
  • the receiving module 510 is further configured to receive, by the base station, a notification that reports two types of channel quality, where the notification is used to indicate that the UE sends the first type of channel quality to the sending end, and the The second type of channel quality.
  • the UE 500 may correspond to a first UE in a method of measuring channel quality according to an embodiment of the present invention, and the foregoing and other operations and/or functions of respective modules in the UE 500 are respectively for the foregoing respective methods.
  • the corresponding process for the sake of brevity, will not be described here.
  • FIG. 6 shows a schematic block diagram of a transmitting end 600 in accordance with an embodiment of the present invention. As shown in FIG. 6, the transmitting end 600 includes:
  • the sending module 610 is configured to send a first reference signal to the first user equipment UE.
  • the receiving module 620 is configured to receive the first type of channel quality and the second type of channel quality of the channel that is sent by the first UE to the first UE, where the first type of channel quality is determined by the first UE.
  • the first reference signal determines that the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by the second UE, and the second UE is the first a neighboring UE of the UE, the second type of channel quality indicating a channel quality of a channel of the transmitting end to the first UE when the second UE is used as an interference source;
  • the sending module 610 is further configured to send data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the transmitting end of the embodiment of the present invention receives the first type channel quality determined according to the first reference signal of the transmitting end and the second type channel determined according to the first reference signal and the second reference signal sent by the neighboring UE, which are sent by the first UE. Quality, data can be transmitted to the first UE according to accurate channel quality, thereby improving transmission quality.
  • the sending end 600 further includes:
  • An acquiring module configured to acquire scheduling information of the second UE
  • the sending module 610 is specifically configured to: according to the scheduling information of the second UE, select to send data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the sending module 610 is specifically configured to: If the second UE sends data when the data is sent to the first UE, the modulation and coding policy is determined to send data to the first UE according to the second type of channel quality; or
  • the modulation and coding policy is determined to send data to the first UE according to the first type of channel quality.
  • the receiving module 620 is further configured to receive scheduling information of the second UE that is sent by the serving base station of the second UE.
  • the acquiring module is specifically configured to acquire scheduling information of the second UE that is received by the receiving module 620.
  • the sending end 600 is a serving base station of the first UE, and the sending module 610 is further configured to send reference signal information of the second UE to the first UE, where the second UE is used.
  • the reference signal information is used by the first UE to receive the second reference signal according to the reference signal information of the second UE.
  • the sending end 600 is a serving base station of the first UE.
  • the sending module 610 is further configured to send, to the first UE, a notification that reports two types of channel quality, where the notification is used to indicate The first UE sends the first type of channel quality and the second type of channel quality to the transmitting end.
  • the above-mentioned and other operations and/or functions of the modules in the quality method are respectively used for the respective processes of the foregoing methods, and are not described herein again for brevity.
  • FIG. 7 shows a structure of a UE according to still another embodiment of the present invention, including at least one processor 702 (for example, a CPU), at least one network interface 705 or other communication interface, a memory 706, and at least one communication bus 703. To achieve connection communication between these components.
  • the processor 702 is configured to execute executable modules, such as computer programs, stored in the memory 706.
  • the memory 706 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 705 (which may be wired or wireless).
  • the memory 706 stores a program 7061, and the processor 702 executes the program 7061 for performing the following operations:
  • the first type of channel quality and the second type of channel quality are sent to the transmitting end through a network interface.
  • the processor is further configured to acquire reference signal information of the second UE;
  • the processor is specifically configured to receive the second reference signal according to the reference signal information of the second UE.
  • the processor is configured to receive, according to the reference signal information of the second UE, the second reference signal on a subband corresponding to the second reference signal at a sending moment of the second reference signal;
  • the processor is specifically configured to receive, by using a network interface, reference signal information of the second UE that is sent by the base station.
  • the processor is further configured to receive, by using a network interface, a notification that is sent by the base station to report two types of channel quality, where the notification is used to indicate that the UE sends the first type of channel quality and the second type of channel quality to the sending end. .
  • the embodiment of the present invention determines the first type of channel quality according to the first reference signal sent by the sending end, and according to the first reference signal and the second reference signal sent by the neighboring UE. Determining the quality of the second type of channel can result in accurate channel quality and improved transmission quality.
  • FIG. 8 shows a structure of a transmitting end according to still another embodiment of the present invention, including at least one processor 802 (for example, a CPU), at least one network interface 805 or other communication interface, a memory 806, and at least one communication bus 803. To achieve connection communication between these components.
  • the processor 802 is configured to execute executable modules, such as computer programs, stored in the memory 806.
  • the memory 806 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 805 (which may be wired or wireless).
  • the memory 806 stores a program 8061, and the processor 802 executes the program 8061 for performing the following operations:
  • the network interface Receiving, by the network interface, the first type of channel quality and the second type of channel quality of the channel that is sent by the first UE to the first UE, where the first type of channel quality is determined by the first UE according to the first
  • the reference signal determines that the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by the second UE, and the second UE is the proximity of the first UE.
  • the second type of channel quality indicates a channel quality of a channel of the transmitting end to the first UE when the second UE is used as an interference source;
  • the processor is further configured to acquire scheduling information of the second UE.
  • the processor is specifically configured to: according to the scheduling information of the second UE, select to send data to the first UE according to the first type of channel quality or the second type of channel quality.
  • the processor is specifically configured to: if the second UE sends data when the sending end sends data to the first UE, determine, according to the second type of channel quality, a modulation and coding policy to the first UE. Send data; or,
  • the modulation and coding policy is determined according to the first type of channel quality to send data to the first UE.
  • the processor is specifically configured to receive the second sent by the serving base station of the second UE.
  • the scheduling information of the UE is not limited to the following information.
  • the sending end is a serving base station of the first UE
  • the processor is further configured to send the reference signal information of the second UE to the first UE by using a network interface, where the reference signal information of the second UE is used by the first UE to receive the first information according to the reference signal information of the second UE. Two reference signals.
  • the sending end is a serving base station of the first UE
  • the processor is further configured to send, by using a network interface, a notification that reports two types of channel quality to the first UE, where the notification is used to indicate that the first UE sends the first type of channel quality and the second type of channel quality to the sending end .
  • the first type of channel quality determined according to the first reference signal sent by the first UE and the first A second type of channel quality determined by a reference signal and a second reference signal sent by the neighboring UE may send data to the first UE according to an accurate channel quality, thereby improving transmission quality.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • 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 connection or communication connection shown or discussed may be an indirect connection or communication connection through some interface, device or unit, or may be an electrical, mechanical or other form. connection.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. The medium of the code.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour mesurer une qualité de canal, un équipement utilisateur et une extrémité d'envoi. Le procédé comprend les opérations suivantes : un premier équipement utilisateur (UE) reçoit un premier signal de référence envoyé par une extrémité d'envoi ; le premier UE détermine une qualité de canal de première classe d'un canal de l'extrémité d'envoi au premier UE selon le premier signal de référence ; le premier UE reçoit un second signal de référence envoyé par un second UE, le second UE étant un UE voisin du premier UE ; le premier UE détermine une qualité de canal de seconde classe du canal de l'extrémité d'envoi au premier UE selon le premier signal de référence et le second signal de référence, la qualité de canal de seconde classe indiquant une qualité de canal du canal de l'extrémité d'envoi au premier UE quand le second UE est utilisé comme source de brouillage ; et le premier UE envoie la qualité de canal de première classe et la qualité de canal de seconde classe à l'extrémité d'envoi. Le procédé de mesure de qualité de canal, l'équipement utilisateur et l'extrémité d'envoi dans des modes de réalisation de la présente invention peuvent améliorer la qualité de transmission.
PCT/CN2014/074245 2014-03-28 2014-03-28 Procédé pour mesurer une qualité de canal, équipement utilisateur et extrémité d'envoi WO2015143690A1 (fr)

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CN201480000299.9A CN105612777B (zh) 2014-03-28 2014-03-28 测量信道质量的方法、用户设备和发送端

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CN102387525A (zh) * 2010-08-27 2012-03-21 中国移动通信集团公司 载波配置方法、装置及系统
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CN102387525A (zh) * 2010-08-27 2012-03-21 中国移动通信集团公司 载波配置方法、装置及系统
US20130322278A1 (en) * 2012-06-01 2013-12-05 Samsung Electronics Co. Ltd. Feedback method and apparatus for cooperative transmission of multiple cells

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