CN114448555A - Method and device for determining quality of downlink space division multiplexing channel - Google Patents
Method and device for determining quality of downlink space division multiplexing channel Download PDFInfo
- Publication number
- CN114448555A CN114448555A CN202011204999.3A CN202011204999A CN114448555A CN 114448555 A CN114448555 A CN 114448555A CN 202011204999 A CN202011204999 A CN 202011204999A CN 114448555 A CN114448555 A CN 114448555A
- Authority
- CN
- China
- Prior art keywords
- reference signal
- user equipment
- division multiplexing
- base station
- received power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
-
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides a method and a device for determining the quality of a downlink space division multiplexing channel, wherein the method comprises the following steps: receiving reference signal receiving power fed back by the user equipment to determine the interference influence quantity of the user equipment during downlink space division multiplexing based on the reference signal receiving power; receiving a channel sounding reference signal sent by user equipment, and measuring the signal-to-noise ratio of single user equipment during data transmission based on the channel sounding reference signal; and determining the channel quality of the user equipment in the downlink space-division multiplexing based on the interference influence quantity and the signal-to-noise ratio in the single-user transmission. The invention solves the problem of inaccurate estimation of the channel quality and achieves the effect of accurately estimating the channel quality during the downlink space division multiplexing.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method and a device for determining the quality of a downlink space division multiplexing channel.
Background
In a conventional Multiple Input Multiple Output (MIMO) communication system, when performing space division multiplexing on downlink, a base station usually performs precoding or beamforming processing on a transmission signal according to a channel matrix H, and then transmits the transmission signal, so as to eliminate interference between signals of different User Equipments (UEs) and improve spectral efficiency of the communication system. Although the interference is removed by precoding or beamforming, interference still exists between different space division UEs during downlink space division multiplexing, and the conventional method does not accurately estimate the interference, but adopts an open-loop method, which considers that the channel quality during downlink space division multiplexing of UEs after space division multiplexing deteriorates by a conservative amount due to the presence of the interference, and the channel quality during downlink space division multiplexing determined by the open-loop method is not the true channel quality at the time of downlink space division multiplexing, and the level of initial Modulation and coding scheme (MCS for short) determined by the method is not the most suitable.
It can be seen from this that, in the prior art, estimation of channel quality at the time of downlink space division multiplexing is not accurate.
In view of the above technical problems, no effective solution has been proposed in the related art.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining the quality of a downlink space division multiplexing channel, which are used for at least solving the problem of inaccurate estimation of the quality of the downlink space division multiplexing channel in the related technology.
According to an embodiment of the present invention, a method for determining quality of a downlink spatial division multiplexing channel is provided, including: receiving reference signal receiving power fed back by user equipment to determine an interference influence quantity of the user equipment during downlink space division multiplexing based on the reference signal receiving power; receiving a channel sounding reference signal sent by the user equipment, so as to measure the signal-to-noise ratio of the single user equipment during data transmission based on the channel sounding reference signal; and determining the channel quality of the user equipment in the downlink space division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission.
According to another embodiment of the present invention, there is provided a data receiving method including: feeding back the measured reference signal received power to a base station to instruct the base station to determine the interference influence quantity of the user equipment during downlink space division multiplexing based on the reference signal received power; sending a channel sounding reference signal to the base station to instruct the base station to measure a signal-to-noise ratio of the single user equipment during data transmission based on the channel sounding reference signal; and receiving data information transmitted by the base station, wherein the data information is transmitted by the base station based on a modulation order corresponding to a channel quality of the user equipment in the downlink space division multiplexing, and the channel quality in the downlink space division multiplexing is determined based on the interference influence amount and the signal-to-noise ratio.
According to another embodiment of the present invention, there is provided an apparatus for determining quality of a downlink spatial division multiplexing channel, including: a first receiving module, configured to receive reference signal received power fed back by a user equipment, so as to determine, based on the reference signal received power, an interference influence amount of the user equipment during downlink space-division multiplexing; a second receiving module, configured to receive a channel sounding reference signal sent by the ue, so as to measure, based on the channel sounding reference signal, a signal-to-noise ratio of a single ue during data transmission; a first determining module, configured to determine, based on the interference influence amount and a signal-to-noise ratio of the single user equipment during data transmission, a channel quality of the user equipment during the downlink space division multiplexing.
In an exemplary embodiment, the apparatus further includes: a third sending module, configured to receive reference signal received power fed back by a user equipment, to send radio resource control, RRC, signaling configuration to the user equipment before determining, based on the reference signal received power, an interference impact quantity of the user equipment during downlink space division multiplexing, to instruct the user equipment to receive a reference signal on a time-frequency resource indicated by the RRC signaling configuration, and to measure and feed back the received power of the reference signal based on the reference signal.
In an exemplary embodiment, the first receiving module includes a transmitter configured to transmit a first reference signal to the user equipment in a narrow beam direction of a first analog beamforming; a first receiving unit, configured to receive received power of the first reference signal measured and fed back by the ue; a second transmitting unit, configured to transmit a second reference signal to the user equipment in a narrow beam direction of a second analog beamforming; a second receiving unit, configured to receive the second reference signal received power measured and fed back by the ue; a first determining unit, configured to determine an interference influence amount of the user equipment during downlink space-division multiplexing based on the received power of the first reference signal and the received power of the second reference signal.
In an exemplary embodiment, the first determining unit includes: a first determining subunit, configured to determine a difference between the received power of the first reference signal and the received power of the second reference signal; a second determining subunit, configured to determine a product of the difference and a linear value of the signal-to-noise ratio; and a third determining subunit, configured to determine, by using the product and the predetermined parameter, an interference influence amount of the ue during downlink space-division multiplexing.
In an exemplary embodiment, the first determining module includes: a second determining unit configured to determine a difference between a signal-to-noise power of the signal-to-noise ratio and an interference power of the interference influence amount; a third determining unit, configured to determine, by using the difference, channel quality of the user equipment during the downlink space division multiplexing.
In an exemplary embodiment, the apparatus further includes: a second determining module, configured to determine, based on the interference influence amount and a signal-to-noise ratio of the single user equipment during data transmission, a channel quality of the user equipment during the downlink space division multiplexing, and then determine a modulation order corresponding to the channel quality of the user equipment during the downlink space division multiplexing; a fourth sending module, configured to send data information to the ue by using the modulation order, so as to instruct the ue to demodulate the data information, so as to obtain a demodulation result; a fourth receiving module, configured to receive harq information sent by the ue, where the harq information is determined by the ue based on the demodulation result; an adjusting module, configured to adjust the level of the modulation order according to the harq information, so that the level of the modulation order corresponds to a channel quality of the ue during the downlink space division multiplexing.
According to another embodiment of the present invention, there is provided a data receiving apparatus including: a first sending module, configured to feed back, to a base station, measured reference signal received power to instruct the base station to determine, based on the reference signal received power, an interference influence amount of a ue during downlink space-division multiplexing; a second sending module, configured to send a channel sounding reference signal to the base station, so as to instruct the base station to measure, based on the channel sounding reference signal, a signal-to-noise ratio of a single user equipment when data is transmitted; a third receiving module, configured to receive data information transmitted by the base station, where the data information is transmitted by the base station based on a modulation order corresponding to a channel quality of the user equipment during the downlink space division multiplexing, and the channel quality during the downlink space division multiplexing is determined based on the interference influence amount and the signal-to-noise ratio.
In an exemplary embodiment, the first sending module includes: a third receiving unit, configured to receive a radio resource control RRC signaling configuration sent by the base station; a fourth receiving unit, configured to receive reference signals on a time-frequency resource indicated by the RRC signaling configuration, where the reference signals include a first reference signal and a second reference signal, the first reference signal is sent by the base station in a first analog beamforming narrow beam direction, and the second reference signal is sent by the base station in a second analog beamforming narrow beam direction; a first measurement unit, configured to measure the first reference signal to obtain a received power of the first reference signal; a second measuring unit, configured to measure the second reference signal to obtain a received power of the second reference signal; and a third transmitting unit configured to feed back the received power of the first reference signal and the received power of the second reference signal to the base station.
In an exemplary embodiment, the second sending module includes: a fifth receiving unit, configured to receive a radio resource control RRC signaling configuration sent by the base station; a fourth sending unit, configured to send the channel sounding reference signal to the base station on the resource indicated by the RRC signaling configuration, so as to instruct the base station to measure the signal-to-noise ratio during data transmission of the single user equipment according to the channel sounding reference signal.
In an exemplary embodiment, the apparatus further includes: a demodulation module, configured to demodulate the data information sent by the base station after receiving the data information, so as to obtain a demodulation result; a fourth sending module, configured to send hybrid automatic repeat request information to the base station according to the demodulation result, where the hybrid automatic repeat request information is used to instruct the base station to adjust the level of the modulation order, so that the level of the modulation order matches with the channel quality of the ue during the downlink space division multiplexing.
According to a further embodiment of the present invention, there is also provided a computer-readable storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the steps in any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory and a processor, the memory having a computer program stored therein, the processor being configured to execute the computer program to perform the steps in any of the method embodiments.
According to the invention, the base station receives the reference signal receiving power fed back by the user equipment so as to determine the interference influence quantity of the user equipment during the downlink space division multiplexing based on the reference signal receiving power; a base station receives a channel sounding reference signal sent by user equipment, so as to measure the signal-to-noise ratio of single user equipment during data transmission based on the channel sounding reference signal; the base station determines the channel quality of the user equipment in the downlink space division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission. The interference during the downlink space division multiplexing is measured, so that the situation of negative gain during the downlink space division multiplexing can be avoided. Therefore, the problem of inaccurate channel quality estimation in the related technology can be solved, and the effect of accurately estimating the channel quality is achieved.
Drawings
Fig. 1 is a block diagram of a hardware configuration of a mobile terminal of a data receiving method according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining the quality of a downlink spatial division multiplexing channel according to an embodiment of the present invention;
fig. 3 is a flowchart of a data receiving method according to an embodiment of the present invention;
FIG. 4 is an overall flow diagram according to an embodiment of the invention;
fig. 5 is a schematic diagram of interference measurement in a downlink spatial multiplexing scenario according to an embodiment of the present invention;
fig. 6 is a flow diagram of an exemplary embodiment of spatial division interference measurement according to an embodiment of the present invention;
FIG. 7 is a flowchart of an exemplary embodiment of single-user transmission channel quality measurements according to an embodiment of the present invention;
fig. 8 is a flowchart of an exemplary embodiment of determining channel quality in spatial division multiplexing according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a communication system for comparative experiments according to an embodiment of the present invention;
FIG. 10 is a graph illustrating results of a conventional approach according to an embodiment of the present invention;
FIG. 11 is a graphical representation of the results of this example according to an embodiment of the invention;
fig. 12 is a block diagram showing the configuration of a downlink spatial multiplexing channel quality determining apparatus according to an embodiment of the present invention;
fig. 13 is a block diagram of a data receiving apparatus according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in conjunction with the embodiments.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The method embodiments provided in the embodiments of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking an operation on a mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of the mobile terminal of a method for determining a downlink spatial multiplexing channel quality according to an embodiment of the present invention. As shown in fig. 1, the mobile terminal may include one or more (only one shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), and a memory 104 for storing data, wherein the mobile terminal may further include a transmission device 106 for communication functions and an input-output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store a computer program, for example, a software program and a module of application software, such as a computer program corresponding to the method for determining the quality of the downlink spatial multiplexing channel in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In this embodiment, a method for determining the quality of a downlink spatial division multiplexing channel is provided, and fig. 2 is a flowchart of the method for determining the quality of the downlink spatial division multiplexing channel according to the embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202, receiving reference signal received power fed back by the user equipment, and determining the interference influence quantity of the user equipment during downlink space division multiplexing based on the reference signal received power;
step S204, receiving a channel sounding reference signal sent by user equipment, so as to measure the signal-to-noise ratio of single user equipment during data transmission based on the channel sounding reference signal;
step S206, determining the channel quality of the user equipment in the downlink space-division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission.
The main body for executing the above steps may be a base station, etc., but is not limited thereto.
The present embodiment may be implemented based on an NR system, but is not limited thereto.
Through the steps, the base station receives the reference signal received power fed back by the user equipment so as to determine the interference influence quantity of the user equipment during the downlink space division multiplexing based on the reference signal received power; a base station receives a channel sounding reference signal sent by user equipment, so as to measure the signal-to-noise ratio of single user equipment during data transmission based on the channel sounding reference signal; the base station determines the channel quality of the user equipment in the downlink space-division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission. The interference during the downlink space division multiplexing is measured, so that the situation of negative gain during the downlink space division multiplexing can be avoided. Therefore, the problem of inaccurate channel quality estimation in the related technology can be solved, and the effect of accurately estimating the channel quality is achieved.
In an exemplary embodiment, before receiving a reference signal received power fed back by the user equipment to determine an interference influence amount of the user equipment in the downlink space-division multiplexing based on the reference signal received power, the method further includes:
and sending Radio Resource Control (RRC) signaling configuration to the user equipment to indicate the user equipment to receive the reference signal on the time-frequency resource indicated by the RRC signaling configuration, and measuring and feeding back the receiving power of the reference signal based on the reference signal.
In this embodiment, the reference Signal received power includes, but is not limited to, rsrp (reference Signal receiving). The base station sends Radio Resource Control (RRC) signaling configuration to User Equipment (UE), the RRC signaling configuration indicates the UE to measure and report RSRP of a reference signal sent by a narrow beam formed by a simulated beam, and interference suffered by the UE during downlink space division multiplexing is estimated by using the measured RSRP.
In this embodiment, the UE is instructed to measure and report the side lobe energy of the CSI-RS resource sent by the narrow beam formed by the paired second analog beam received during actual downlink space division multiplexing through RRC signaling configuration, so as to accurately estimate the interference value, and when the interference is large, the downlink space division multiplexing is not performed, thereby avoiding the situation of negative gain when the downlink space division multiplexing is performed with large interference, and improving the robustness of the system.
In one exemplary embodiment, receiving reference signal received power fed back by a user equipment to determine an interference influence amount of the user equipment in downlink space-division multiplexing based on the reference signal received power comprises:
s1, transmitting a first reference signal to a user equipment in a narrow beam direction of a first analog beamforming;
s2, receiving the signal receiving power of the first reference signal measured and fed back by the user equipment;
s3, sending a second reference signal to the user equipment in a narrow beam direction of a second analog beamforming;
s4, receiving the received power of the second reference signal measured and fed back by the user equipment;
s5, determining an interference influence amount of the ue in downlink space-division multiplexing based on the received power of the first reference signal and the received power of the second reference signal.
In this embodiment, the two analog beam-formed narrow beams sent by the base station are a first analog beam-formed narrow beam and a second analog beam-formed narrow beam, respectively; the user equipment, which may be UE1 located within the coverage of the narrow beam main lobe of the first analog beamforming and UE2 located within the coverage of the narrow beam main lobe of the second analog beamforming. The base station transmits CSI-RS Resource0 in a narrow beam direction of a first analog beam forming aiming at the UE1, transmits CSI-RS Resource1 in a narrow beam direction of a second analog beam forming aiming at the UE2 in a time sharing sequence, the UE1 sequentially measures reference signal receiving powers of the CSI-RS Resource0 and the CSI-RS Resource1 as first reference signal receiving power RSRP1 and second reference signal receiving power RSRP2, and the RSRP1 and the RSRP2 are used for channel quality determination in downlink space division multiplexing.
In one exemplary embodiment, determining the interference influence quantity of the user equipment in the downlink space division multiplexing based on the received power of the first reference signal and the received power of the second reference signal comprises:
s1, determining a difference between the received power of the first reference signal and the received power of the second reference signal;
s2, determining the product of the difference value and the linear value of the signal-to-noise ratio;
and S3, determining the interference influence quantity of the user equipment during the downlink space division multiplexing by using the product and a predetermined parameter.
In the present embodiment, in the case where the first reference signal received power is RSRP1, the second reference signal received power is RSRP2, the signal-to-noise ratio is SINR1, and the interference influence amount is delta _ SINR,
delta_SINR＝(RSRP2-RSRP1)*SINR1+1。
in one exemplary embodiment, determining the channel quality of the user equipment in the downlink space-division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission comprises:
s1, determining the difference value between the signal-to-noise power of the signal-to-noise ratio and the interference power of the interference influence quantity;
and S2, determining the channel quality of the user equipment in the downlink space-division multiplexing by using the difference.
In this embodiment, based on the interference RSRP2 measured in the above embodiment, the main lobe energy RSRP1 of the narrow beam formed by the first analog beam where the UE is located and the channel quality SINR1 of the UE during single-user transmission, which are measured during beam management, the interference influence quantity delta _ SINR caused by the side lobe energy of the narrow beam formed by the second analog beam when the UE performs downlink space division multiplexing is estimated, and the channel quality SINR2 at the time of final downlink space division multiplexing is determined to be SINR1-delta _ SINR according to the interference influence quantity.
In one exemplary embodiment, after determining the channel quality of the user equipment in the downlink space division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission, the method further comprises:
s1, determining a modulation order corresponding to the channel quality of the user equipment during the downlink space division multiplexing;
s2, sending data information to the user equipment by using the modulation order to instruct the user equipment to demodulate the data information to obtain a demodulation result;
s3, receiving hybrid automatic repeat request information sent by the user equipment, wherein the hybrid automatic repeat request information is determined by the user equipment based on the demodulation result;
s4, adjusting the modulation order level according to the harq information, so that the modulation order level corresponds to the channel quality of the ue in downlink space-division multiplexing.
In this embodiment, the base station selects a corresponding initial modulation order class for data transmission according to the channel quality SINR2 at the time of downlink space division multiplexing estimated in the above embodiment. After receiving data sent by a modulation order determined by the base station, the UE feeds back hybrid automatic repeat request information Harq information to the base station according to a demodulation result; and the base station dynamically adjusts the estimated space division interference according to the received Harq feedback information, so that the final modulation order grade of the scheduling better conforms to the actual channel quality under the space division multiplexing condition.
In this embodiment, the channel quality SINR2 of the downlink space division multiplexing is determined by actually measured RSRP1, RSRP2, and SINR1, and an initial MCS level is selected for data transmission, so that the system can converge quickly, and the throughput of the system is improved.
In this embodiment, a method for determining quality of a downlink spatial division multiplexing channel is provided, and fig. 3 is a flowchart of a data receiving method according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:
step S302, feeding back the measured reference signal received power to the base station to instruct the base station to determine the interference influence quantity of the user equipment during the downlink space division multiplexing based on the reference signal received power;
step S304, sending a channel sounding reference signal to the base station to instruct the base station to measure the signal-to-noise ratio of the single user equipment during data transmission based on the channel sounding reference signal;
step S306, receiving data information sent by the base station, wherein the data information is sent by the base station based on a modulation order corresponding to the channel quality of the user equipment in the downlink space division multiplexing, and the channel quality in the downlink space division multiplexing is determined based on the interference influence quantity and the signal-to-noise ratio.
The execution subject of the above steps may be a user equipment, etc., but is not limited thereto.
The present embodiment may be implemented based on an NR system, but is not limited thereto.
Through the steps, the user equipment feeds back the measured reference signal received power to the base station to indicate the base station to determine the interference influence quantity of the user equipment during the downlink space division multiplexing based on the reference signal received power; the user equipment sends a channel sounding reference signal to the base station to indicate the base station to measure the signal-to-noise ratio of the single user equipment during data transmission based on the channel sounding reference signal; the user equipment receives data information sent by the base station, wherein the data information is sent by the base station based on a modulation order corresponding to the channel quality of the user equipment in the downlink space division multiplexing, and the channel quality in the downlink space division multiplexing is determined based on the interference influence quantity and the signal-to-noise ratio. The interference during the downlink space division multiplexing is measured, so that the situation of negative gain during the downlink space division multiplexing can be avoided. Therefore, the problem of inaccurate channel quality estimation in the related technology can be solved, and the effect of accurately estimating the channel quality is achieved.
In one exemplary embodiment, feeding back the measured reference signal received power to the base station includes:
s1, receiving Radio Resource Control (RRC) signaling configuration sent by a base station;
s2, receiving a reference signal on a time-frequency resource indicated by RRC signaling configuration, where the reference signal includes a first reference signal and a second reference signal, the first reference signal is sent by the base station in a narrow beam direction of a first analog beamforming, and the second reference signal is sent by the base station in a narrow beam direction of a second analog beamforming;
s3, measuring the first reference signal to obtain the receiving power of the first reference signal;
s4, measuring the second reference signal to obtain the receiving power of the second reference signal;
s5, the received power of the first reference signal and the received power of the second reference signal are fed back to the base station.
In this embodiment, a user equipment UE receives Radio Resource Control (RRC) signaling configuration sent by a base station, where the RRC signaling configuration indicates the UE to measure and report RSRP of a system measurement pilot Resource (CSI-RS-response indicator/index, abbreviated as CRI) Resource sent by a narrow beam formed by an analog beam, and estimates interference suffered by the UE during downlink space division multiplexing using the measured RSRP.
In this embodiment, the UE measures and reports the sidelobe energy of the CSI-RS resource sent by the narrow beam formed by the paired second analog beam received during actual downlink space division multiplexing, and accurately estimates the interference value, and when the interference is large, the UE may be restricted from not performing downlink space division multiplexing, thereby avoiding the situation of negative gain when performing downlink space division multiplexing when the interference is large, and improving the robustness of the system.
In one exemplary embodiment, transmitting a channel sounding reference signal to a base station to instruct the base station to measure a signal-to-noise ratio of a single user equipment in transmitting data based on the channel sounding reference signal comprises:
s1, receiving radio resource control RRC signaling configuration sent by a base station;
and S2, sending a channel sounding reference signal to the base station on the resource indicated by the RRC signaling configuration to indicate the base station to measure the signal-to-noise ratio of the single user equipment during data transmission according to the channel sounding reference signal.
In this embodiment, the base station instructs the UE to transmit the SRS signal on the designated resource through RRC signaling configuration, receives the SRS signal transmitted by the UE on the instructed resource, and measures the channel quality of the UE during single-user transmission according to the received SRS signal. The method for obtaining channel quality during single-user transmission is not limited in this embodiment, and may be obtained by measuring an SRS signal and obtaining downlink channel quality through uplink-downlink reciprocity, or by sending a CSI-RS Resource for measuring channel state information in a narrow beam formed by a first analog beam to allow a UE to perform measurement reporting, or in other embodiments.
In an exemplary embodiment, after receiving the data information transmitted by the base station, the method further includes:
s1, demodulating the data information to obtain a demodulation result;
and S2, sending hybrid automatic repeat request information to the base station according to the demodulation result, wherein the hybrid automatic repeat request information is used for instructing the base station to adjust the level of the modulation order so as to enable the level of the modulation order to be matched with the channel quality of the user equipment during the downlink space-division multiplexing.
In this embodiment, the base station selects a corresponding initial modulation order class for data transmission according to the channel quality SINR2 at the time of downlink space division multiplexing estimated in the above embodiment. After receiving data sent by a modulation order determined by the base station, the UE feeds back hybrid automatic repeat request information Harq information to the base station according to a demodulation result; and the base station dynamically adjusts the estimated space division interference according to the received Harq feedback information, so that the final modulation order grade of the scheduling better conforms to the actual channel quality under the space division multiplexing condition.
In this embodiment, the channel quality SINR2 of the downlink space division multiplexing is determined by actually measured RSRP1, RSRP2, and SINR1, and an initial MCS level is selected for data transmission, so that the system can converge quickly, and the throughput of the system is improved.
The present invention will be described in detail with reference to the following specific examples:
a New Radio (NR) high-frequency communication system operates in a millimeter wave frequency band, and since a path loss of a millimeter wave signal is large and coverage is limited during transmission, a large-scale antenna array is required to perform analog beam forming during millimeter wave communication, and a narrow beam is formed to provide additional transmitting antenna gain or receiving antenna gain to overcome signal attenuation. The downlink space division multiplexing in the NR high frequency communication system means that the user equipments in the narrow beams shaped by two analog beams use the same time frequency resource for data transmission. When the first user equipment performs downlink space division multiplexing, interference received by the first user equipment in the narrow beam main lobe of the first analog beam forming during downlink space division multiplexing can be considered as side lobe energy leakage of a side lobe of a narrow beam formed by a second analog beam forming paired with the first analog beam forming in the narrow beam main lobe direction of the first analog beam forming. The side lobe energy leakage of the narrow beam, which can be considered as the second analog beamforming, causes interference to the first user equipment. In this embodiment, interference caused by sidelobe energy leakage of a narrow beam shaped by a second analog beam is quantitatively estimated by a method of allowing user equipment to measure and feed back reference signal received power or a signal-to-noise ratio, channel quality during downlink space division multiplexing can be accurately determined according to a result of the quantitative estimation of the interference, and then an appropriate initial MCS level is selected according to the channel quality during downlink space division multiplexing for data transmission, so that when the user equipment performs downlink space division multiplexing, a system can be rapidly converged near a set target block error rate, and system throughput is improved.
The present embodiment is further described below with reference to the accompanying drawings:
in the present embodiment, an alternative embodiment is described by taking the first UE1 as an example, to determine the channel quality of the UE1 in downlink space-division multiplexing. The second user equipment UE2 performing downlink spatial multiplexing pairing with the UE1 also needs to go through the same operation as the UE1 to obtain channel quality information of the UE2 performing downlink spatial multiplexing pairing with the UE1, but the operation flow of the UE2 is not described in detail again.
As shown in fig. 4, is an overall flow of the technical solution of the present embodiment, including: s401, space division interference measurement; s402, measuring the channel quality during single-user transmission; s403, determining the channel quality during space division multiplexing; s404, dynamically adjusting the space division interference estimation result according to a Hybrid Automatic Repeat reQuest (Harq) feedback result.
As shown in fig. 5, a schematic diagram of interference measurement in a downlink spatial multiplexing scenario in this embodiment includes: the base station is used for sending two narrow beams of analog beam forming which are respectively a first narrow beam of analog beam forming and a second narrow beam of analog beam forming; the user equipment, UE1 located within the coverage of the narrow beam main lobe of the first analog beamforming and UE2 located within the coverage of the narrow beam main lobe of the second analog beamforming, respectively. The base station time-share sequentially sends CSI-RS Resource0 in the narrow beam direction of the first analog beam forming aiming at the UE1, sends CSI-RS Resource1 in the narrow beam direction of the second analog beam forming aiming at the UE2, the UE1 sequentially measures the reference signal receiving powers of the CSI-RS Resource0 and the CSI-RS Resource1 to be RSRP1 and RSRP2 respectively, and the RSRP1 and the RSRP2 are used for determining the channel quality during downlink space division multiplexing.
As shown in fig. 6, it is a flowchart of an exemplary embodiment of spatial division interference measurement in this embodiment, and includes:
s601, RRC signaling configuration, wherein the base station indicates the UE to receive CSI-RS Resource on the indicated time frequency Resource through the RRC signaling configuration, measures the RSRP and reports the RSRP to the base station;
s602, the CSI-RS Resource at the base station side is sent, as shown in fig. 5, the base station sends CSI-RS Resource0 and CSI-RS Resource1 on the time-frequency Resource indicated in S601 by using the narrow beam formed by the first analog beam and the narrow beam formed by the second analog beam in turn;
s603, interference power reporting, wherein the UE1 measures the received power of the CSI-RS Resource0 and the received power of the CSI-RS Resource1, and reports the measurement results of the CSI-RS Resource0 and the CSI-RS Resource1 to RSRP1 and RSRP2 respectively in the reporting Resource indicated in the S603.
As shown in fig. 7, which is a flowchart of an exemplary embodiment of measuring quality of a single-user transmission channel in this embodiment, S701, a base station instructs, through RRC signaling configuration, a UE to transmit an SRS signal on a designated resource;
s702, the base station receives an SRS signal sent by the UE on the indicated resource;
s703 the base station measures the channel quality of the UE during single-user transmission according to the received SRS signal. The method for acquiring channel quality during single-user transmission is not limited in the present invention, and in the example, the downlink channel quality is acquired by measuring an SRS signal and by uplink-downlink reciprocity, or the method may be acquired by sending a CSI-RS Resource for measuring channel state information in a narrow beam formed by a first analog beam to allow a UE to perform measurement reporting, or other embodiments.
As shown in fig. 8, a flowchart of an exemplary embodiment for determining channel quality in spatial division multiplexing includes the steps of:
s801, further estimating a space division interference influence situation according to the space division interference measurement result and the channel quality measurement result during single user transmission by the following method:
delta_SINR＝(RSRP2-RSRP1)*SINR1+1，
s802, determining the channel quality during the downlink space division multiplexing, and the base station may estimate the channel quality during the downlink space division multiplexing according to the interference during the downlink space division multiplexing estimated in S801 as follows:
SINR2＝SINR1-delta_SINR
s803, the modulation order is determined during space division multiplexing, and the base station selects a corresponding initial modulation order grade for data transmission according to the channel quality SINR2 estimated in S802 during downlink space division multiplexing;
s804, dynamically feeding back Harq information, wherein after receiving data sent by the base station according to the modulation order determined in S803, the UE feeds back the Harq information to the base station according to a demodulation result;
s805, space division interference estimation self-adaptive adjustment, wherein the estimated space division interference is dynamically adjusted according to the Harq feedback information received in the S804, so that the final modulation order grade of the scheduling better conforms to the actual channel quality under the space division multiplexing condition;
as shown in fig. 9, which is a schematic diagram of a communication system in which a comparison experiment is performed between the method of this embodiment and the conventional method, there are 5 user equipments in total, the 5 user equipments are respectively located in narrow beams formed by different analog beams, and downlink spatial multiplexing pairing is performed between the 5 user equipments at random. The method for determining the quality of the downlink spatial multiplexing channel by using the technical solution of the present embodiment is respectively used for performing a comparison experiment on downlink spatial multiplexing data transmission with the method for determining the quality of the downlink spatial multiplexing channel based on the conventional open-loop manner, and the result based on the conventional method is shown in fig. 10, and the result based on the specific embodiment of the technical solution of the present invention is shown in fig. 11. In this embodiment, the block error rate of each UE converges to around the set target block error rate, whereas the conventional method has different performance for different UEs, and only part of the UEs converge. As shown in table 1, for the UE3, the throughput rate of the method of this embodiment is significantly improved, and the cell throughput rate is also improved.
Table 1:
| conventional methods | Method of the present embodiment | Gain of | |
| 3 scheduled TBsize (bit) | 5.17E+08 | 7.10E+08 | 37.52％ |
| TBsize (bit) scheduled |
2.95E+09 | 2.93E+09 | -0.70％ |
| TBsize (bit) scheduled |
3.85E+08 | 3.42E+08 | -11.27％ |
| Tbsize (bit) scheduled |
1.05E+09 | 1.06E+09 | 0.47％ |
| ue |
6.70E+08 | 6.07E+08 | -9.43％ |
| TBsize (bit) of cell total scheduling | 5.57E+09 | 5.64E+09 | 1.28％ |
In summary, in the embodiment, interference during downlink space division multiplexing is measured, so that a situation of negative gain during downlink space division multiplexing can be avoided, and robustness of the system is improved. And determining the channel quality during the downlink space division multiplexing according to the actual interference, and selecting a proper initial MCS for data transmission, so that the system can be rapidly converged, and the throughput rate of the system is improved. The Harq feedback information is distinguished according to the narrow beam information of the second analog beam forming, so that when the UE1 is matched with the UE2 in the narrow beam formed by the second analog beam forming, the block error rate can be converged to be close to the target block error rate, and the system throughput rate is improved.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method according to the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
In this embodiment, a device for determining quality of a downlink spatial division multiplexing channel is further provided, where the device is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 12 is a block diagram of a downlink spatial multiplexing channel quality determining apparatus according to an embodiment of the present invention, and as shown in fig. 12, the apparatus includes:
a first receiving module 1202, configured to receive reference signal received power fed back by a user equipment, so as to determine, based on the reference signal received power, an interference influence amount of the user equipment during downlink space-division multiplexing;
a second receiving module 1204, configured to receive a channel sounding reference signal sent by a ue, so as to measure, based on the channel sounding reference signal, a signal-to-noise ratio of a single ue when transmitting data;
a first determining module 1206, configured to determine a channel quality of the ue in downlink space-division multiplexing based on the interference impact amount and a signal-to-noise ratio of the single-ue in data transmission.
In an exemplary embodiment, the apparatus further includes: a third sending module, configured to receive reference signal received power fed back by a user equipment, to send radio resource control, RRC, signaling configuration to the user equipment before determining, based on the reference signal received power, an interference impact quantity of the user equipment during downlink space division multiplexing, to instruct the user equipment to receive a reference signal on a time-frequency resource indicated by the RRC signaling configuration, and to measure and feed back the received power of the reference signal based on the reference signal.
In an exemplary embodiment, the first receiving module includes a transmitter configured to transmit a first reference signal to the user equipment in a narrow beam direction of a first analog beamforming; a first receiving unit, configured to receive received power of the first reference signal measured and fed back by the ue; a second transmitting unit, configured to transmit a second reference signal to the user equipment in a narrow beam direction of a second analog beamforming; a second receiving unit, configured to receive the second reference signal received power measured and fed back by the ue; a first determining unit, configured to determine an interference influence amount of the user equipment during downlink space-division multiplexing based on the received power of the first reference signal and the received power of the second reference signal.
In an exemplary embodiment, the first determining unit includes: a first determining subunit, configured to determine a difference between the received power of the first reference signal and the received power of the second reference signal; a second determining subunit, configured to determine a product of the difference and a linear value of the signal-to-noise ratio; and a third determining subunit, configured to determine, by using the product and the predetermined parameter, an interference influence amount of the ue during downlink space division multiplexing.
In an exemplary embodiment, the first determining module includes: a second determining unit configured to determine a difference between a signal-to-noise power of the signal-to-noise ratio and an interference power of the interference influence amount; a third determining unit, configured to determine, by using the difference, channel quality of the user equipment during the downlink space division multiplexing.
In an exemplary embodiment, the apparatus further includes: a second determining module, configured to determine, based on the interference influence amount and a signal-to-noise ratio of the single user equipment during data transmission, a channel quality of the user equipment during the downlink space division multiplexing, and then determine a modulation order corresponding to the channel quality of the user equipment during the downlink space division multiplexing; a fourth sending module, configured to send data information to the ue by using the modulation order, so as to instruct the ue to demodulate the data information, so as to obtain a demodulation result; a fourth receiving module, configured to receive harq information sent by the ue, where the harq information is determined by the ue based on the demodulation result; an adjusting module, configured to adjust the level of the modulation order according to the harq information, so that the level of the modulation order corresponds to a channel quality of the ue during the downlink space division multiplexing.
Fig. 13 is a block diagram of a data receiving apparatus according to an embodiment of the present invention, as shown in fig. 13, the apparatus including:
a first sending module 1302, configured to feed back the measured reference signal received power to the base station to instruct the base station to determine, based on the reference signal received power, an interference influence amount of the ue during downlink space-division multiplexing;
a second sending module 1304, configured to send a channel sounding reference signal to the base station, so as to instruct the base station to measure a signal-to-noise ratio of the single user equipment when transmitting data based on the channel sounding reference signal;
a third receiving module 1306, configured to receive data information sent by the base station, where the data information is sent by the base station based on a modulation order corresponding to a channel quality of the user equipment in downlink space division multiplexing, and the channel quality in downlink space division multiplexing is determined based on the interference impact amount and the signal-to-noise ratio.
In an exemplary embodiment, the first sending module includes: a third receiving unit, configured to receive a radio resource control RRC signaling configuration sent by the base station; a fourth receiving unit, configured to receive a reference signal on a time-frequency resource indicated by the RRC signaling configuration, where the reference signal includes a first reference signal and a second reference signal, the first reference signal is sent by the base station in a narrow beam direction of a first analog beamforming, and the second reference signal is sent by the base station in a narrow beam direction of a second analog beamforming; a first measurement unit, configured to measure the first reference signal to obtain a received power of the first reference signal; a second measuring unit, configured to measure the second reference signal to obtain a received power of the second reference signal; and a third transmitting unit configured to feed back the received power of the first reference signal and the received power of the second reference signal to the base station.
In an exemplary embodiment, the second sending module includes: a fifth receiving unit, configured to receive a radio resource control RRC signaling configuration sent by the base station; a fourth sending unit, configured to send the channel sounding reference signal to the base station on the resource indicated by the RRC signaling configuration, so as to instruct the base station to measure the signal-to-noise ratio during data transmission of the single user equipment according to the channel sounding reference signal.
In an exemplary embodiment, the apparatus further includes: a demodulation module, configured to demodulate the data information sent by the base station after receiving the data information, so as to obtain a demodulation result; a fourth sending module, configured to send hybrid automatic repeat request information to the base station according to the demodulation result, where the hybrid automatic repeat request information is used to instruct the base station to adjust the level of the modulation order, so that the level of the modulation order matches with the channel quality of the ue during the downlink space division multiplexing.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program is arranged to perform the steps of any of the above-mentioned method embodiments when executed.
In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
In an exemplary embodiment, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary embodiments, and details of this embodiment are not repeated herein.
It will be apparent to those skilled in the art that the various modules or steps of the invention described above may be implemented using a general purpose computing device, they may be centralized on a single computing device or distributed across a network of computing devices, and they may be implemented using program code executable by the computing devices, such that they may be stored in a memory device and executed by the computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into various integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. A method for determining the quality of a downlink space division multiplexing channel is characterized by comprising the following steps:
receiving reference signal receiving power fed back by user equipment to determine an interference influence quantity of the user equipment during downlink space division multiplexing based on the reference signal receiving power;
receiving a channel sounding reference signal sent by the user equipment, so as to measure the signal-to-noise ratio of the single user equipment during data transmission based on the channel sounding reference signal;
and determining the channel quality of the user equipment in the downlink space division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in the data transmission.
2. The method of claim 1, wherein before receiving a reference signal received power fed back by a user equipment to determine an interference influence amount of the user equipment in downlink space-division multiplexing based on the reference signal received power, the method further comprises:
and sending Radio Resource Control (RRC) signaling configuration to the user equipment to indicate the user equipment to receive a reference signal on the time-frequency resource indicated by the RRC signaling configuration, and measuring and feeding back the receiving power of the reference signal based on the reference signal.
3. The method of claim 1, wherein receiving a reference signal received power fed back by a user equipment to determine an interference influence amount of the user equipment in downlink space-division multiplexing based on the reference signal received power comprises:
transmitting a first reference signal to the user equipment in a narrow beam direction of a first analog beamforming;
receiving the received power of the first reference signal measured and fed back by the user equipment;
transmitting a second reference signal to the user equipment in a narrow beam direction of a second analog beamforming;
receiving the received power of the second reference signal measured and fed back by the user equipment;
and determining the interference influence quantity of the user equipment in the downlink space-division multiplexing based on the received power of the first reference signal and the received power of the second reference signal.
4. The method of claim 3, wherein determining the amount of interference impact of the UE in downlink space-division multiplexing based on the received power of the first reference signal and the received power of the second reference signal comprises:
determining a difference between the received power of the first reference signal and the received power of the second reference signal;
determining a product of the difference and a linear value of the signal-to-noise ratio;
and determining the interference influence quantity of the user equipment in the downlink space division multiplexing by using the product and a preset parameter.
5. The method of claim 1, wherein determining the channel quality of the user equipment in the downlink space division multiplexing based on the interference influence quantity and the signal-to-noise ratio of the single user equipment in data transmission comprises:
determining a difference between a signal-to-noise power of the signal-to-noise ratio and an interference power of the interference affecting quantity;
and determining the channel quality of the user equipment during the downlink space division multiplexing by using the difference.
6. The method of claim 1, wherein after determining the channel quality of the user equipment in the downlink space division multiplexing based on the interference impact amount and the signal-to-noise ratio of the single user equipment in data transmission, the method further comprises:
determining a modulation order corresponding to the channel quality of the user equipment during the downlink space division multiplexing;
sending data information to the user equipment by using the modulation order to indicate the user equipment to demodulate the data information to obtain a demodulation result;
receiving hybrid automatic repeat request information sent by the user equipment, wherein the hybrid automatic repeat request information is determined by the user equipment based on the demodulation result;
and adjusting the level of the modulation order according to the HARQ information so that the level of the modulation order corresponds to the channel quality of the UE during the downlink space division multiplexing.
7. A data receiving method, comprising:
feeding back the measured reference signal received power to a base station to instruct the base station to determine an interference influence quantity of the user equipment in downlink space division multiplexing based on the reference signal received power;
transmitting a channel sounding reference signal to the base station to instruct the base station to measure a signal-to-noise ratio of a single user equipment in data transmission based on the channel sounding reference signal;
receiving data information transmitted by the base station, wherein the data information is transmitted by the base station based on a modulation order corresponding to the channel quality of the user equipment in the downlink space division multiplexing, and the channel quality in the downlink space division multiplexing is determined based on the interference influence quantity and the signal-to-noise ratio.
8. The method of claim 7, wherein feeding back the measured reference signal received power to the base station comprises:
receiving Radio Resource Control (RRC) signaling configuration sent by the base station;
receiving reference signals on time-frequency resources indicated by the RRC signaling configuration, wherein the reference signals comprise first reference signals and second reference signals, the first reference signals are transmitted by the base station in a narrow beam direction of first analog beamforming, and the second reference signals are transmitted by the base station in a narrow beam direction of second analog beamforming;
measuring the first reference signal to obtain the receiving power of the first reference signal;
measuring the second reference signal to obtain the receiving power of the second reference signal;
and feeding back the received power of the first reference signal and the received power of the second reference signal to the base station.
9. The method of claim 7, wherein sending a channel sounding reference signal to the base station to instruct the base station to measure a signal-to-noise ratio of a single user equipment in transmitting data based on the channel sounding reference signal comprises:
receiving Radio Resource Control (RRC) signaling configuration sent by the base station;
and sending the channel sounding reference signal to the base station on the resource indicated by the RRC signaling configuration to indicate the base station to measure the signal-to-noise ratio during data transmission of the single user equipment according to the channel sounding reference signal.
10. The method of claim 7, wherein after receiving the data information transmitted by the base station, the method further comprises:
demodulating the data information to obtain a demodulation result;
and sending hybrid automatic repeat request information to the base station according to the demodulation result, wherein the hybrid automatic repeat request information is used for instructing the base station to adjust the level of the modulation order, so that the level of the modulation order is matched with the channel quality of the user equipment during the downlink space division multiplexing.
11. A device for determining quality of a downlink spatial division multiplexing channel, comprising:
a first receiving module, configured to receive reference signal received power fed back by a user equipment, so as to determine, based on the reference signal received power, an interference influence amount of the user equipment during downlink space-division multiplexing;
a second receiving module, configured to receive a channel sounding reference signal sent by the ue, so as to measure, based on the channel sounding reference signal, a signal-to-noise ratio of a single ue during data transmission;
a first determining module, configured to determine, based on the interference influence amount and a signal-to-noise ratio of the single user equipment when transmitting data, a channel quality of the user equipment when performing the downlink spatial multiplexing.
12. A data receiving device, comprising:
a first sending module, configured to feed back the measured reference signal received power to a base station, so as to instruct the base station to determine, based on the reference signal received power, an interference influence amount of a user equipment during downlink space-division multiplexing;
a second sending module, configured to send a channel sounding reference signal to the base station, so as to instruct the base station to measure, based on the channel sounding reference signal, a signal-to-noise ratio of a single user equipment when transmitting data;
a third receiving module, configured to receive data information sent by the base station, where the data information is sent by the base station based on a modulation order corresponding to a channel quality of the ue during the downlink space division multiplexing, and the channel quality during the downlink space division multiplexing is determined based on the interference impact amount and the signal-to-noise ratio.
13. A computer-readable storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 6 when executed, or to perform the method of any of claims 7 to 10.
14. An electronic apparatus comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 6, or to perform the method of any of claims 7 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011204999.3A CN114448555A (en) | 2020-11-02 | 2020-11-02 | Method and device for determining quality of downlink space division multiplexing channel |
| PCT/CN2021/128221 WO2022089655A1 (en) | 2020-11-02 | 2021-11-02 | Method and apparatus for determining downlink space-division multiplexing channel quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011204999.3A CN114448555A (en) | 2020-11-02 | 2020-11-02 | Method and device for determining quality of downlink space division multiplexing channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114448555A true CN114448555A (en) | 2022-05-06 |
Family
ID=81357399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011204999.3A Pending CN114448555A (en) | 2020-11-02 | 2020-11-02 | Method and device for determining quality of downlink space division multiplexing channel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114448555A (en) |
| WO (1) | WO2022089655A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9301175B2 (en) * | 2012-11-02 | 2016-03-29 | Samsung Electronics Co., Ltd. | Configuration of interference measurement resources for enhanced downlink measurements and MU-MIMO |
| KR102291457B1 (en) * | 2014-09-03 | 2021-08-19 | 삼성전자주식회사 | Method and apparatus for estimating channel quality considering interference control and coordinated multi-point transmission and reception in cellular system |
| CN108282321B (en) * | 2017-01-06 | 2022-03-29 | 华为技术有限公司 | Information indication method, network equipment and terminal equipment |
-
2020
- 2020-11-02 CN CN202011204999.3A patent/CN114448555A/en active Pending
-
2021
- 2021-11-02 WO PCT/CN2021/128221 patent/WO2022089655A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022089655A1 (en) | 2022-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10420090B2 (en) | Communication technique using CSI-RS in mobile communication system | |
| CN110912665B (en) | Data transmission method and device | |
| US8792881B2 (en) | Method and apparatus for determining cell for executing comp in multi-cell environment | |
| US20210067233A1 (en) | Beam training method, apparatus, and system | |
| KR102291457B1 (en) | Method and apparatus for estimating channel quality considering interference control and coordinated multi-point transmission and reception in cellular system | |
| CN108540995B (en) | Channel state detection method, network equipment and user equipment | |
| US8929232B2 (en) | Transmission power control method and mobile station apparatus | |
| EP3557808A1 (en) | Power control method for uplink measurement reference signal, network device, and terminal device | |
| EP3522403B1 (en) | Interference measurement method, device and system, interference measurement indication method and device | |
| CN110769456B (en) | Communication method and device | |
| US11252674B2 (en) | Methods and apparatuses for multi-panel power control | |
| US11121759B2 (en) | Techniques for interference-aware beam pair selection | |
| CN106105328B (en) | Terminal, network equipment and coordinated multi-point transmission coordinated set selection method | |
| US10382993B2 (en) | Inter-cell interference measurement method and device in flexible duplex system | |
| CN108631891B (en) | Method and device for measuring link between communication nodes | |
| US10944464B2 (en) | Method and apparatus for switching analog beam | |
| US11133855B2 (en) | Uplink beam management | |
| EP3675378A1 (en) | Measurement method, network device, and terminal device | |
| WO2016026350A1 (en) | Method and apparatus for determining three-dimensional channel state information | |
| WO2018028544A1 (en) | Method, apparatus and system for pilot configuration and information feedback | |
| CN104221313B (en) | Method and apparatus for data transfer | |
| US20150341817A1 (en) | Rank indicator inheritance for subframe restricted channel state information reporting | |
| KR102042686B1 (en) | Method and apparatus for optimizing antenna precoder selection with combined antennas | |
| CN114448555A (en) | Method and device for determining quality of downlink space division multiplexing channel | |
| WO2022027636A1 (en) | Ssb determination method and apparatus, and device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |