CN113949470A - Receiver selection method, wireless device, and storage medium - Google Patents

Receiver selection method, wireless device, and storage medium Download PDF

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CN113949470A
CN113949470A CN202010694026.6A CN202010694026A CN113949470A CN 113949470 A CN113949470 A CN 113949470A CN 202010694026 A CN202010694026 A CN 202010694026A CN 113949470 A CN113949470 A CN 113949470A
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receiver
wireless device
air interface
interface environment
analysis result
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CN113949470B (en
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冉建军
韩重阳
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • 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
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

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

Abstract

A receiver selection method, a wireless device and a storage medium are disclosed, which belong to the technical field of communication. The air interface environment analysis result can represent the channel characteristics between one or more STAs and the wireless equipment, the wireless equipment can automatically select a receiver for receiving data according to the air interface environment analysis result, the selection method is simple, and the switching efficiency of the receiver is high.

Description

Receiver selection method, wireless device, and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a receiver selection method, a wireless device, and a storage medium.
Background
In order to adapt to different air interface environments and improve air interface performance, an Access Point (AP) may include a plurality of different types of receivers, for example, a Minimum Mean Square Error (MMSE) receiver, a Maximum Likelihood Detection (MLD) receiver, an Interference Rejection Combining (IRC) receiver, and the like. If the change situation of the air interface environment is identified by manual experience, and then the receivers used by the AP in different air interface environments are configured manually, the method is complicated.
Disclosure of Invention
The application provides a receiver selection method, a wireless device and a storage medium, wherein the receiver selection method is simple and convenient, and can improve the switching efficiency of a receiver. The technical scheme is as follows:
in a first aspect, a receiver selection method is provided, and the method includes: a wireless device obtains an air interface environment analysis result, wherein the air interface environment analysis result is used for representing channel characteristics between one or more Stations (STAs) and the wireless device; and the wireless equipment selects a target receiver according to the air interface environment analysis result, wherein the target receiver is used for receiving the data sent by the one or more STAs.
In the application, the air interface environment analysis result can represent the channel characteristics between one or more STAs and the wireless device, and the wireless device can automatically select a receiver for receiving data according to the air interface environment analysis result, so that the selection method is simple and the switching efficiency of the receiver is high.
In some possible implementations, the selecting the target receiver includes selecting one of the candidate receivers as the target receiver, the candidate receivers including at least two of an MLD receiver, an IRC receiver, and an MMSE receiver.
In some possible implementation manners, an implementation process of the wireless device obtaining the air interface environment analysis result is as follows: the wireless device receives a Physical Protocol Data Unit (PPDU); the wireless device measures the PPDU to obtain the air interface environment analysis result, where the air interface environment analysis result includes one or more of the following: the number of data streams supported by an air interface environment between the one or more STAs and the wireless device, and an interference signal indicator of the PPDU.
And the air interface environment analysis result is obtained by the wireless equipment according to the PPDU received in real time. Therefore, a receiver is selected for the STA corresponding to the PPDU according to the analysis result of the air interface environment, which is equivalent to selecting and switching the receiver according to the real-time change condition of the air interface environment between the STA and the wireless equipment, so that the timely linkage of the receiver switching and the change condition of the air interface environment is realized, and the air interface spectrum efficiency can be utilized to the maximum extent.
In some possible implementation manners, when the candidate receiver includes an MLD receiver and the analysis result of the air interface environment includes the number of data streams supported by the air interface environment, the selecting, by the wireless device, a target receiver according to the analysis result of the air interface environment includes: and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is greater than a first threshold, the wireless device selects an MLD receiver as the target receiver.
When the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is greater than a first threshold, it is indicated that the channel of the current PPDU is more suitable for multi-stream transmission. Compared with an IRC receiver and an MMSE receiver, the MLD receiver is more suitable for eliminating inter-stream interference during multi-stream transmission, and therefore, a better receiving effect can be achieved by selecting the MLD receiver as a target receiver in this case.
In some possible implementation manners, when the candidate receiver includes an IRC receiver and the air interface environment analysis result includes an interference signal index of the PPDU, an implementation process of the wireless device selecting a target receiver according to the air interface environment analysis result is as follows: if the interference signal indicator of the PPDU is greater than a second threshold, the wireless device selects an IRC receiver as the target receiver.
And when the interference signal index of the PPDU is greater than the second threshold value, the PPDU is indicated to be greatly interfered by signals of other channels. In this case, since the IRC receiver is better suited to cancel other signal interference than the MLD receiver and the MMSE receiver, the wireless device selects the IRC as a target receiver through which to receive data subsequently transmitted by the STA that transmitted the PPDU.
In some possible implementation manners, when the candidate receiver includes an MLD receiver, an IRC receiver, and an MMSE receiver, and the air interface environment analysis result includes the number of data streams supported by the air interface environment and the interference signal indicator of the PPDU, the implementation process of the wireless device selecting the target receiver according to the air interface environment analysis result includes: and if the ratio of the number of data streams supported by the air interface environment in the number of receiving antennas of the wireless equipment is not greater than a first threshold value and the index of the interference signal of the PPDU is not greater than a second threshold value, the wireless equipment takes an MMSE receiver as the target receiver.
If the number of data streams supported by the air interface environment corresponding to the PPDU is not greater than the first threshold and the interference signal indicator of the PPDU is not greater than the second threshold, considering that the power consumption of the MMSE receiver is smaller than that of the MLD receiver and the IRC receiver, the wireless device selects the MMSE receiver as a target receiver, so as to reduce the power consumption of the wireless device.
In some possible implementation manners, when the candidate receiver includes an MLD receiver and an MMSE receiver, and the air interface environment analysis result includes the number of data streams supported by the air interface environment, an implementation process of the wireless device selecting a target receiver according to the air interface environment analysis result is as follows: and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is not greater than a first threshold, the wireless device selects the MMSE receiver as the target receiver.
In some possible implementation manners, when the candidate receiver includes an IRC receiver and an MMSE receiver, the air interface environment analysis result includes an interference signal indicator of the PPDU, and an implementation process of the wireless device selecting a target receiver according to the air interface environment analysis result is as follows: if the interference signal indicator of the PPDU is not greater than a second threshold, the wireless device selects the MMSE receiver as the target receiver.
In some possible implementations, the number of PPDUs is greater than 1. In this case, the air interface environment analysis result may include a result obtained by the wireless device measuring a plurality of PPDUs within one statistical period. On the basis, the wireless device selects the receiver in the next statistical period for the plurality of STAs connected with the wireless device in a unified manner according to the statistical result in the statistical period, so that the selection efficiency is higher.
In a possible implementation manner, when the number of PPDUs is greater than 1, and the candidate receiver includes an MLD receiver, and the air interface environment analysis result includes the number of data streams supported by the air interface environment, the wireless device selects an implementation process of a target receiver according to the air interface environment analysis result: determining the number of PPDUs of which the ratio of the number of data streams supported by the corresponding air interface environment to the number of receiving antennas of the wireless device is greater than a first threshold value to obtain a first number; the wireless device selects the MLD receiver as the target receiver if a ratio of the first number to a total number of PPDUs is greater than a third threshold.
In a case that the number of PPDUs is greater than 1, in another possible implementation manner, when the candidate receiver includes an IRC receiver and the air interface environment analysis result includes an interference signal indicator of the PPDU, an implementation process of the wireless device selecting a target receiver according to the air interface environment analysis result is: determining the number of PPDUs with the interference signal index larger than a second threshold value to obtain a second number; the wireless device selects the IRC receiver as the target receiver if a ratio of the second number to a total number of PPDUs is greater than a fourth threshold.
In a second aspect, a receiver selection method is provided, the method comprising a wireless device receiving data in turn using a plurality of receivers; the wireless device changes a time period for receiving data using the plurality of receivers according to a reception effect of each of the plurality of receivers, wherein a time period for which a receiver with a good reception effect is used is longer.
In the application, the wireless device selects the receiver with good receiving effect by using the receivers to receive data in turn, so that the automatic selection and switching of the receivers are realized, and the method is simple and convenient and has high efficiency.
In some possible implementations, the plurality of receivers are at least two of an MLD receiver, an IRC receiver, and an MMSE receiver.
In some possible implementations, the reception effect includes at least one of a preamble reception effect and a data part reception performance.
Wherein the preamble reception effect is determined according to a Cyclic Redundancy Check (CRC) result of the SIG field of the received PPDU. In one possible implementation manner, the preamble reception effect is characterized by a ratio of the number of PPDUs not passing the CRC of the included SIG field to the number of PPDUs passing the CRC of the included SIG field.
In addition, the data part reception performance is determined according to the CRC result of the data part of the received PPDU. The data part reception performance is characterized by the ratio of the number of PPDUs for which the CRC of the included data part fails to pass to the number of PPDUs for which the CRC of the included data part passes. Or, the Data part reception performance is characterized by the total number of bytes of a MAC layer Protocol Data Unit (MPDU) included in a PPDU through which the CRC of the included Data part passes.
In some possible implementations, the implementation procedure of the wireless device changing the duration of receiving data by using the plurality of receivers according to the receiving effect of each of the plurality of receivers is as follows: the wireless device extends the length of time that the best receiving receiver receives data.
In a possible implementation manner, the extending, by the wireless device, the duration for the receiver with the best receiving effect to receive the data is to extend the duration for the receiver with the best receiving effect to receive the data next time.
In another possible implementation manner, the wireless device extending the duration of receiving data by the receiver with the best receiving effect means increasing the number of times of receiving data by using the receiver with the best receiving effect.
In a third aspect, a wireless device is provided, the wireless device having functionality to implement the receiver selection method behavior of the first or second aspect. The wireless device comprises at least one module configured to implement the receiver selection method provided in the first aspect or the second aspect.
In a fourth aspect, a wireless device is provided, which includes a processor, a memory and a receiver, where the memory is used to store a program for supporting the wireless device to execute the receiver selection method provided in the first aspect or the second aspect, and store data used to implement the receiver selection method provided in the first aspect or the second aspect. The processor is configured to execute a program stored in the memory to control the receiver to receive data. The operating means of the memory device may further comprise a communication bus for establishing a connection between the processor, the memory and the receiver.
In a fifth aspect, there is provided a computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the receiver selection method of the first or second aspect.
A sixth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the receiver selection method of the first or second aspect.
The technical effects obtained by the third, fourth, fifth and sixth aspects are similar to the technical effects obtained by the corresponding technical means in the first or second aspect, and are not described herein again.
The beneficial effect that technical scheme that this application provided brought includes at least:
in the embodiment of the present application, the air interface environment analysis result may characterize channel characteristics between one or more STAs and the wireless device, and the wireless device may automatically select a receiver for receiving data according to the air interface environment analysis result, which is simple in selection method and high in switching efficiency of the receiver.
Drawings
Fig. 1 is a diagram of an implementation environment related to a receiver selection method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a wireless device according to an embodiment of the present application;
fig. 3 is a flowchart of a receiver selection method according to an embodiment of the present application;
fig. 4 is a flowchart of another receiver selection method provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of another wireless device provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of another wireless device provided in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is an implementation environment diagram according to a receiver selection method provided in an embodiment of the present application. As shown in fig. 1, the implementation environment includes: a wireless device 01 and one or more STAs 02. Wherein each STA02 communicates with the wireless device 01 over a wireless network.
In one possible scenario, wireless device 01 is an Access Point (AP) in a Wireless Local Area Network (WLAN). An AP is also referred to as a hotspot or the like, and is an access point for a mobile subscriber to a wired network. Wherein the AP may access the wired network and provide a wireless interface to the STA 02. STA02 accesses the network through the wireless interface provided by AP1 and communicates with other network devices through the network. The AP may be a network device with a WLAN chip, such as a router switch access integrated device providing AP functions or services.
Optionally, the wireless device 01 is a base station in a Long Term Evolution (LTE) network or a fifth generation mobile communication technology (5G) network.
STA02 is a wireless communication chip, a wireless sensor, a wireless communication terminal, or the like. For example: the system comprises a mobile phone, a tablet computer, a set top box, an intelligent television, an intelligent wearable device, a vehicle-mounted communication device and a computer which support the wireless communication function.
In this embodiment, the wireless device 01 selects a receiver for receiving data sent by each STA02 according to the acquired air interface environment analysis result. The air interface environment analysis result can represent the channel characteristics between the STA02 and the wireless equipment 01, so that the wireless equipment 01 can automatically select a receiver for receiving data according to the change condition of the air interface environment, the selection method is simple, and the switching efficiency of the receiver is high.
In some possible examples, when the STA has multiple receivers, the receiver selection method provided in the embodiment of the present application can also be applied to the STA to implement automatic selection switching of the receivers in different air interface environments.
Fig. 2 is a schematic structural diagram of a wireless device according to an embodiment of the present application. Illustratively, wireless device 01 in fig. 1 may be implemented by the wireless device shown in fig. 2. Referring to fig. 2, the wireless device includes a processor 201 and a transceiver 202, and optionally a communication bus 203 and a memory 204.
The processor 201 may be a general purpose Central Processing Unit (CPU), microprocessor, or one or more integrated circuits for controlling the execution of programs in accordance with the teachings of the present application.
In one possible implementation, the transceiver 202 includes multiple receivers including at least two of an MLD receiver, an IRC receiver, and an MMSE receiver. The multiple receivers may be multiple receiving circuits integrated on one chip for implementing different receiver functions, or may be multiple independent receiving circuits. The multiple receivers are configured to receive data and/or signaling transmitted by one or more STAs and to receive data and/or signaling transmitted by other wireless devices. The plurality of receivers may also be a plurality of receiver algorithms in the transceiver 202, and the transceiver 202 can load any one of the plurality of receiver algorithms for data reception, so that the transceiver 202 is implemented as a receiver corresponding to the corresponding receiver algorithm. Wherein the plurality of receiver algorithms includes at least two of an MLD receiver algorithm, an IRC receiver algorithm, and an MMSE receiver algorithm.
Alternatively, communication bus 203 may include a path to transfer information between the aforementioned components.
Alternatively, Memory 204 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile disks, blu-ray disks, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 203 may be self-contained and coupled to the processor 201 via the communication bus 202. The memory 203 may also be integrated with the processor 201.
For one embodiment, processor 201 includes one or more CPUs.
As an example, the wireless device further includes an output device (not shown) and an input device (not shown). An output device communicates with the processor 201 to display information in a variety of ways. For example, the output device is a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device communicates with the processor 201 to receive user input in a variety of ways. The input device is for example a mouse, a keyboard, a touch screen device or a sensing device etc.
The memory 204 is used for storing program codes for executing the scheme of the application, and is controlled by the processor 201 to execute. The processor 201 is used to execute program code (not shown) stored in the memory 204. One or more software modules may be included in the program code. The wireless device shown in fig. 1 implements the selection of the receiver by means of the processor 201 and one or more software modules in the program code in the memory 204.
Next, a receiver selection method provided in an embodiment of the present application is described.
Fig. 3 is a flowchart of a receiver selection method according to an embodiment of the present application. The method is applied to the wireless device shown in fig. 1. Referring to fig. 3, the method comprises the steps of:
step 301: the wireless device obtains an air interface environment analysis result, and the air interface environment analysis result is used for representing channel characteristics between one or more STAs and the wireless device.
In this embodiment, a Physical (PHY) layer of a wireless device receives a physical layer protocol data unit (PPDU) sent by one or more STAs, and obtains an air interface environment analysis result according to the received PPDU. The air interface environment analysis result includes one or more of the number of data streams supported by the air interface environment between the one or more STAs and the wireless device and an interference signal indicator of the PPDU. The interference signal index of the PPDU is used for representing the interference of the PPDU by signals of other channels.
In one possible implementation, the wireless device measures the received PPDU to obtain an air interface environment analysis result. Wherein the number of PPDUs is 1 or greater than 1.
Illustratively, the STA inserts a training sequence for channel estimation when transmitting the PPDU. When the number of PPDUs is 1, the wireless device performs channel estimation according to a training sequence of one PPDU after receiving the PPDU, thereby obtaining a channel estimation result. The channel estimation result includes a channel matrix for characterizing the channel characteristics. And determining the number of the effective eigenvalues of the channel matrix, and taking the number of the effective eigenvalues as the number of data streams supported by an air interface environment between the STA and the wireless equipment. The effective eigenvalue is an eigenvalue of the channel matrix that meets a preset condition. The preset condition means that the ratio of the corresponding eigenvalue to the maximum eigenvalue in the eigenvalues of the channel matrix is greater than a preset value.
In addition, when the wireless device receives the PPDU, the wireless device determines a covariance matrix corresponding to the PPDU according to the PPDU. And determining an interference signal index of the PPDU according to the off-diagonal element energy and the diagonal element energy of the covariance matrix.
Illustratively, the wireless device determines a covariance matrix of the signal carrying the PPDU according to the following model (1).
Figure BDA0002590289900000061
Wherein Ruu refers to the covariance matrix corresponding to the PPDU, N is the sum of the number of effective subcarriers carrying the PPDU, H1(k) Refers to the channel estimation result on the k-th effective sub-carrier before filtering, H2(k) Refers to the channel estimation result on the k-th effective subcarrier after filtering.
It should be noted that, when the energy of the off-diagonal elements of the covariance matrix is larger than the energy of the diagonal elements, it indicates that the PPDU is subjected to larger signal interference from other channels. When the energy of the off-diagonal elements of the covariance matrix is smaller relative to the energy of the diagonal elements, it means that the PPDU is less interfered by signals of other channels. Based on this, in the embodiment of the present application, after determining the covariance matrix, the wireless device determines the interference signal indicator of the PPDU according to the off-diagonal element energy and the diagonal element energy of the covariance matrix.
In one possible implementation, the wireless device calculates a sum of squares of the modes of each element on the off-diagonal of the covariance matrix, obtains a first sum of squares, and characterizes the off-diagonal element energy of the covariance matrix by the first sum of squares. And calculating the square sum of the modulus of each element on the opposite angle of the covariance matrix to obtain a second square sum, and representing the energy of the opposite angle element of the covariance matrix through the second square sum. And calculating the ratio of the first square sum to the second square sum, and taking the ratio as an interference signal index of the PPDU.
In another possible implementation manner, the wireless device calculates an accumulated value of real and imaginary absolute values of off-diagonal elements in the covariance matrix to obtain a first accumulated value, and the off-diagonal element energy of the covariance matrix is characterized by the first accumulated value. And calculating the accumulated value of the real part absolute value and the imaginary part absolute value of the diagonal to obtain a second accumulated value, and representing the diagonal element energy of the covariance matrix through the second accumulated value. And calculating the ratio of the first accumulated value to the second accumulated value, and taking the ratio as an interference signal index of the PPDU.
Optionally, when the number of PPDUs is greater than 1, the wireless device receives multiple PPDUs transmitted by one or more STAs within one statistical period. For each PPDU, the wireless device performs channel estimation according to the training sequence of the PPDU, thereby obtaining the channel estimation result of each PPDU. And taking the number of the effective eigenvalues of the channel matrix in the channel estimation result of each PPDU as the number of data streams supported by the air interface environment corresponding to the corresponding PPDU. Meanwhile, upon receiving each PPDU, the wireless device determines a corresponding covariance matrix for each PPDU according to the method introduced above. And determining an interference signal index of the corresponding PPDU according to the off-diagonal element energy and the diagonal element energy of the corresponding covariance matrix of each PPDU. Correspondingly, the air interface environment analysis result obtained by the wireless device includes the number of data streams supported by the air interface environment corresponding to each PPDU and the interference signal index of each PPDU.
It should be noted that the number of the effective eigenvalues in the foregoing is a manner of representing the number of data streams supported by an air interface environment between the STA and the wireless device, which is provided in this embodiment of the application. In some possible examples, the number of data streams supported by the air interface environment may also be characterized by other values. In addition, the two implementation manners for determining the interference signal indicator of the PPDU given above are only two possible examples given in the embodiment of the present application, and the wireless device may also determine the energies of the off-diagonal element and the diagonal element in the covariance matrix in other manners, further compare the energies of the off-diagonal element and the energies of the diagonal element, and determine the interference signal indicator according to the comparison result, which is not limited in the embodiment of the present application.
Optionally, after receiving the PPDU, the wireless device measures the received PPDU, sends the measurement result PDU to another device, such as a controller, and analyzes the measurement result of the PPDU by the other device, so as to obtain an air interface environment analysis result. The embodiments of the present application are not described herein again.
Step 302: and the wireless equipment selects a target receiver according to the air interface environment analysis result, wherein the target receiver is used for receiving data sent by one or more STAs.
After obtaining the air interface environment analysis result, the wireless device selects a target receiver from the multiple candidate receivers according to the air interface environment analysis result. Because the air interface environment analysis result represents the channel characteristics between the STA and the wireless equipment, the wireless equipment selects the target receiver according to the air interface environment analysis result, namely, the receiver is automatically selected according to the channel characteristics, the selection method is simple, and the selection and switching efficiency of the receiver is improved.
The candidate receivers in the embodiment of the present application include an MLD receiver, an IRC receiver, and an MMSE receiver, and accordingly, the selected target receiver is one of the receivers. Wherein the plurality of candidate receivers are implemented by a plurality of different circuits comprised by the wireless device, i.e. the plurality of candidate receivers are a plurality of different hardware implemented receivers. Optionally, the multiple candidate receivers are implemented by a circuit of the wireless device using different receiver algorithms, that is, the multiple candidate receivers are implemented by hardware using different receiver algorithms.
As can be seen from the introduction in step 301, the air interface environment analysis result includes the number of data streams supported by the air interface environment corresponding to the currently received PPDU and/or the interference signal indicator of the PPDU. Or the air interface environment analysis result includes the number of data streams supported by the air interface environment corresponding to each PPDU in the multiple PPDUs received in one statistical period and/or the interference signal index of each PPDU. The method for selecting the target receiver in this step is also different for the analysis results of the air interface environments of different implementation manners.
When the air interface environment analysis result includes the number of data streams supported by the air interface environment corresponding to the currently received PPDU, the wireless device determines the ratio of the number of the data streams supported by the air interface environment to the number of receiving antennas of the wireless device. If the duty ratio is greater than the first threshold, the MLD receiver is taken as the target receiver.
Wherein the first threshold is 0.5 or some other value. When the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is greater than a first threshold, it is indicated that the channel of the current PPDU is more suitable for multi-stream transmission. Compared with an IRC receiver and an MMSE receiver, the MLD receiver is more suitable for eliminating inter-stream interference during multi-stream transmission and can achieve a better receiving effect, so that the MLD receiver is used as a target receiver to receive data subsequently sent by an STA sending the PPDU under the condition that the current channel of the PPDU is determined to be more suitable for multi-stream transmission.
And when the air interface environment analysis result comprises the interference signal index of the currently received PPDU, the wireless equipment judges whether the interference signal index of the PPDU is larger than a second threshold value. And if the interference signal index of the PPDU is larger than a second threshold value, the IRC receiver is taken as a target receiver.
The interference signal index of the PPDU is used for representing the interference of the PPDU. When the interference signal index of the PPDU is characterized by the ratio of the off-diagonal element energy and the diagonal element energy of the covariance matrix, if the ratio is greater than the second threshold, it indicates that the off-diagonal element energy is greater than the diagonal element energy, that is, the PPDU is greatly interfered by signals of other channels. In this case, since the IRC receiver is better suited to cancel other signal interference than the MLD receiver and the MMSE receiver, the wireless device selects the IRC as a target receiver through which to receive data subsequently transmitted by the STA that transmitted the PPDU.
When the air interface environment analysis result includes the number of data streams supported by the air interface environment corresponding to the currently received PPDU and the interference signal index of the PPDU, the wireless device determines the ratio of the number of the data streams supported by the air interface environment to the number of receiving antennas of the wireless device, and determines whether the interference signal index of the PPDU is greater than a second threshold. If the number of data streams supported by the air interface environment corresponding to the PPDU is not greater than the first threshold and the interference signal indicator of the PPDU is not greater than the second threshold, considering that the power consumption of the MMSE receiver is smaller than that of the MLD receiver and the IRC receiver, the wireless device selects the MMSE receiver as a target receiver. And receiving data subsequently transmitted by the STA transmitting the PPDU through the target receiver. And if the number of data streams supported by the air interface environment corresponding to the PPDU is greater than a first threshold value and the interference signal index of the PPDU is greater than a second threshold value, the wireless device randomly selects one receiver from the MLD receiver and the IRC receiver as a target receiver. Alternatively, the wireless device selects one receiver from the MLD receiver and the IRC receiver as the target receiver based on other principles, such as the maximum benefit principle.
Optionally, in some possible embodiments, before selecting the target receiver according to the air interface environment analysis result by the above method, if the STA that transmits the PPDU has an explicit power consumption requirement, for example, when the STA requires that the power consumption is lower than a reference power consumption threshold, the wireless device directly takes a receiver with lower power consumption, such as an MMSE receiver, as the target receiver.
When the air interface environment analysis result includes the number of data streams supported by the air interface environment corresponding to each PPDU in the multiple PPDUs received in the current statistical period, the wireless device determines the number of PPDUs, in which the number of receiving antennas of the wireless device accounts for more than a first threshold, of the number of supported data streams. For convenience of the subsequent description, this number is referred to as a first number. And if the ratio of the first number to the number of the received plurality of PPDUs is greater than a third threshold, the MLD receiver is taken as the target receiver.
The first threshold is 0.5 or other values, and the third threshold is 0.7 or 0.8 or other values, which is not limited in the embodiments of the present application. When the ratio of the first number to the number of the received multiple PPDUs is greater than the third threshold, it indicates that the corresponding channels suitable for the multi-stream transmission are more channels in the received multiple PPDUs. In this case, the MLD receiver is used as a target receiver, and data of all STAs communicating with the wireless device is received by the target receiver in the next statistical period, thereby mitigating inter-stream interference in most channels in which multi-stream transmission is performed.
Optionally, if the ratio of the first number to the number of the received PPDUs is not greater than the fifth threshold, and the receiver selected by the wireless device in the last statistical period of the current statistical period is the MLD receiver, the wireless device exits the MLD receiver in the next statistical period. Wherein the fifth threshold is equal to the third threshold or is smaller than the third threshold, for example, the third threshold is 0.7, and the fifth threshold is 0.5.
When the air interface environment analysis result includes the interference signal indicator of each of the plurality of PPDUs received within the current statistical period, the wireless device determines the number of PPDUs for which the interference signal indicator is greater than the second threshold. For convenience of the subsequent description, this number is referred to as a second number. And if the ratio of the second number to the number of the received plurality of PPDUs is greater than a fourth threshold, the IRC receiver is taken as the target receiver.
The fourth threshold is 0.7 or 0.8 or other values, which is not limited in the embodiments of the present application. And when the ratio of the second number to the number of the received multiple PPDUs is greater than the fourth threshold, indicating that the number of PPDUs interfered by signals of other channels in the multiple PPDUs is greater. In this case, the IRC receiver is selected as the target receiver, and data of all STAs communicating with the wireless device is received by the target receiver in the next statistical period, so as to reduce signal interference from other channels to most signals.
Optionally, if the ratio of the second number to the number of the received PPDUs is not greater than the sixth threshold and the receiver selected by the wireless device in the last statistical period of the current statistical period is the IRC receiver, the wireless device exits the IRC receiver in the next statistical period. Wherein the sixth threshold is equal to or less than the fourth threshold, for example, the fourth threshold is 0.7, and the sixth threshold is 0.5.
And when the air interface environment analysis result comprises the number of data streams and the interference signal index supported by the air interface environment corresponding to each PPDU in the plurality of PPDUs received in the current counting period, the wireless equipment determines the first number and the second number. And if the ratio of the first number to the number of the plurality of received PPDUs is not greater than a third threshold and the ratio of the second number to the number of the plurality of received PPDUs is not greater than a fourth threshold, selecting an MMSE receiver with lower power consumption as a target receiver, and receiving data transmitted by all STAs communicating with the wireless device through the MMSE receiver in the next statistical period.
In the embodiment of the application, the wireless device selects a target receiver for receiving data according to the acquired air interface environment analysis result. Because the air interface environment analysis result can represent the channel characteristics between one or more STAs and the wireless device, selecting the target receiver according to the air interface environment analysis result is equivalent to automatically selecting the receiver according to the channel characteristics between the STAs and the wireless device, the selection method is simple, and the switching efficiency of the receiver is improved. And selecting the receiver according to the channel characteristics between the STA and the wireless device can ensure that the appropriate receiver is adopted to receive data in an appropriate environment, that is, the demodulation performance of the receiver is ensured to be matched with an air interface environment, so that the reception benefit of the wireless device can be improved, and the user experience can be improved.
In addition, in this embodiment of the present application, the result of the air interface environment analysis is measured by the wireless device according to the PPDU received in real time. Therefore, a receiver is selected for the STA corresponding to the PPDU according to the analysis result of the air interface environment, which is equivalent to selecting and switching the receiver according to the real-time change condition of the air interface environment between the STA and the wireless equipment, so that the timely linkage of the receiver switching and the change condition of the air interface environment is realized, and the air interface spectrum efficiency can be utilized to the maximum extent.
Finally, in this embodiment of the present application, the analysis result of the air interface environment may include a result obtained by the wireless device measuring multiple PPDUs in one statistical period. On the basis, the wireless device selects the receiver in the next statistical period for the plurality of STAs connected with the wireless device in a unified manner according to the statistical result in the statistical period, so that the selection efficiency is higher.
Fig. 4 is a flowchart of another receiver selection method according to an embodiment of the present application. The method is used for the wireless device shown in fig. 1, and referring to fig. 4, the method comprises the following steps:
step 401: the wireless device takes turns receiving data using multiple receivers.
In the embodiment of the present application, a Media Access Control (MAC) layer of the wireless device issues a seek indication to the PHY layer. The PHY layer, upon receiving the optimizing indication, first randomly selects one of the plurality of receivers to receive the data. When the time length of the data received by the receiver reaches the first time length, the PHY layer selects another receiver from the rest receivers except the receiver to receive the data, and so on, thereby realizing that a plurality of receivers receive the data in turn, wherein the time length of each receiver for receiving the data is the first time length. The plurality of receivers refers to two or more receivers, and the plurality of receivers includes at least two of an MLD receiver, an IRC receiver, and an MMSE receiver.
It should be noted that, during the process of receiving the PPDU by each receiver, the PHY layer may report the preamble statistics of the receiver and the data portion of the PPDU received by the receiver to the MAC layer, so that the MAC layer determines the receiving effect of each receiver according to the preamble statistics and/or the data portion of the receiver.
Wherein the PPDU comprises a preamble part and a data part. The preamble of the PPDU includes a SIG field and a training sequence. In the embodiment of the present application, the preamble statistics of the receiver is determined according to a Cyclic Redundancy Check (CRC) condition of a SIG field in a PPDU received by the receiver.
Illustratively, for any receiver, the PHY layer counts the number N1 of PPDUs received by the receiver, where the CRC of the SIG field passes through the PPDU. And counting the number N2 of PPDUs which fail in the CRC of the SIG field in the PPDU received by the receiver. The N1 and N2 are uploaded to the MAC layer as preamble statistics of the receiver.
For the data part, since the PHY layer cannot determine whether the CRC of the data part passes, in this embodiment of the present application, the PHY layer may directly upload the data part in the received PPDU to the MAC layer, and the MAC determines the data part reception performance of the receiver according to the data part.
In another possible implementation manner, in the process of receiving the PPDU by each receiver, the PHY layer directly reports, to the MAC layer, a CRC result and a data portion of a SIG field in the PPDU received by the receiver, where the CRC result is used to indicate whether a CRC of the corresponding SIG field passes or not.
Step 402: the wireless device changes a time period for receiving data using the plurality of receivers according to a reception effect of each of the plurality of receivers, wherein a time period for which a receiver with a good reception effect is used is longer.
Wherein the reception effect comprises a preamble reception effect and/or a data part reception performance.
After the MAC layer of the wireless device receives the preamble statistical result of the receiver reported by the PHY layer and the data portion of the PPDU received by the receiver, the MAC layer determines the receiving effect of each receiver according to the received preamble statistical result and/or the data portion of the PPDU, and then determines the receiver with the best receiving effect, that is, the target receiver, according to the receiving effect of each receiver.
In a possible implementation manner, the MAC layer determines the preamble receiving effect of each receiver according to the received preamble statistical result of each receiver, and then selects a target receiver from the plurality of receivers according to the preamble receiving effect of each receiver.
Illustratively, for each receiver, the MAC layer first calculates the ratio of N2 to N1 included in the preamble statistics of each receiver. The preamble reception effect of the receiver is characterized by the ratio between N2 and N1. Since N2 indicates the number of PPDUs for which the CRC of the SIG field fails and N1 indicates the number of PPDUs for which the CRC of the SIG field passes, a smaller ratio between N2 and N1 indicates a better preamble reception effect of the receiver. Based on this, the MAC layer determines a minimum ratio from the plurality of ratios, and takes a receiver corresponding to the minimum ratio as a target receiver.
In another possible implementation manner, the MAC layer determines the data part reception performance of each receiver according to the received data part of the PPDU of each receiver, and then selects a target receiver from the plurality of receivers according to the data part reception performance of each receiver.
As an example, for any receiver, the MAC layer counts the number N3 of PPDUs through which the CRC of the data part in the PPDU received by the receiver passes. And counting the number N4 of PPDUs with failed CRC of the data part in the PPDU received by the receiver. A ratio between N4 and N3 is determined by which the data portion reception performance of the receiver is characterized.
Since N4 indicates the number of PPDUs for which the CRC of the data part fails and N3 indicates the number of PPDUs for which the CRC of the data part passes, a smaller ratio between N4 and N3 indicates a better reception effect of the data part by the receiver. Based on this, the MAC layer determines a minimum ratio from the plurality of ratios, and takes a receiver corresponding to the minimum ratio as a target receiver.
As another example, for any receiver, the MAC layer counts the number N3 of PPDUs that the CRC check of the data part of the PPDU received by the receiver passes. The total number of bytes of MAC layer Protocol Data units (MPDUs) in the N3 PPDUs is determined. And the data part receiving performance of the receiver is characterized by the counted total number of bytes. Then, the MAC layer takes the receiver with the maximum total number of bytes as the target receiver. Alternatively, the MAC determines the total number of MPDUs of the N3 PPDUs, and characterizes data portion reception performance of the receiver by the determined total number of MPDUs.
In other possible implementations, the MAC layer determines the reception effect of the corresponding receiver according to the data part of the PPDU received by each receiver and the preamble statistics.
As an example, for any receiver, the MAC layer refers to the foregoing method, and obtains N1, N2, N3, and N4 corresponding to each receiver through statistics. The sum of N1 and N3 is calculated to obtain a first value and the sum of N2 and N4 is calculated to obtain a second value. The ratio of the second value to the first value ensures the comprehensive reception of the preamble and data portions of the receiver. And then, the MAC layer determines the minimum value from the calculated ratios corresponding to the plurality of receivers, and takes the receiver corresponding to the minimum value as a target receiver.
Or, as another example, for any receiver, the MAC layer determines a ratio for characterizing the preamble reception effect of the receiver and a ratio for characterizing the data part reception performance of the receiver with reference to the method described above. And then, weighting the two ratios according to a preset proportion, and ensuring the receiving effect of the receiver through the weighted value. Then, a minimum weight value is determined from the determined weight values corresponding to the plurality of receivers, and the receiver corresponding to the minimum weight value is set as a target receiver.
Optionally, after the MAC layer of the wireless device receives the CRC result and the data portion of the SIG field reported by the PHY layer, the MAC layer determines the preamble statistical result of the receiver with reference to the method for determining the preamble statistical result by the PHY layer described in step 401, and then determines the preamble receiving effect of the receiver according to the preamble statistical result by the method described above. Then, the target receiver is selected according to the preamble reception effect of each receiver.
Alternatively, the MAC layer determines the data reception performance of the receiver directly according to the data part of the received PPDU with reference to the method described above, and then selects a target receiver according to the data part reception performance of each receiver.
Alternatively, the MAC layer determines the preamble statistics of the receiver with reference to the manner in which the PHY layer determines the preamble statistics described in step 401. Thereafter, the preamble statistics and the data portion of the received PPDU are combined to determine the reception effect of the receiver, with reference to the method described above.
After determining the target receiver, the MAC layer issues a receiver indication to the PHY layer. The PHY layer extends the time length for the target receiver to receive the data after receiving the receiver indication.
In one possible example, the PHY layer extends the duration of the next time data is received by the target receiver. For example, if the original receiving duration of the target receiver is the first duration, the receiving duration is changed to the second duration when the target receiver receives data next time, where the second duration is greater than the first duration.
Alternatively, in another possible example, the PHY layer increases the reception time period of the target receiver by increasing the number of times the data is received using the target receiver.
For example, the PHY layer receives data through the target receiver after receiving the receiver indication. When the time length of the target receiver for receiving the data reaches the third time length, the MAC layer issues the optimizing instruction to the PHY layer again. The PHY layer determines the target receiver again by the method described above.
In the embodiment of the application, the receiver with good receiving effect is selected through the cooperation of the MAC layer and the PHY layer of the wireless equipment, so that the automatic selection and switching of the receiver are realized, and the method is simple and convenient and has high efficiency.
Referring to fig. 5, an embodiment of the present application provides a wireless device 500, where the wireless device 500 includes:
an obtaining module 501, configured to execute step 301 in the foregoing embodiment;
a selecting module 502, configured to perform step 302 in the foregoing embodiment.
Optionally, the selecting module is configured to select one of the candidate receivers as the target receiver, where the candidate receiver includes at least two of an MLD receiver, an IRC receiver, and an MMSE receiver.
Optionally, the obtaining module 501 is configured to:
receiving a PPDU;
measuring the PPDU to obtain an air interface environment analysis result, wherein the air interface environment analysis result comprises one or more of the following: the number of data streams supported by an air interface environment between one or more STAs and the wireless device, and an interference signal indicator of the PPDU.
Optionally, when the candidate receiver includes an MLD receiver and the analysis result of the air interface environment includes the number of data streams supported by the air interface environment, the selecting module 502 is configured to:
and if the ratio of the number of the data streams supported by the air interface environment to the number of the receiving antennas of the wireless equipment is greater than a first threshold, selecting the MLD receiver as a target receiver.
Optionally, when the candidate receiver includes an IRC receiver and the air interface environment analysis result includes an interference signal indicator of a PPDU, the selecting module 502 is configured to:
and if the interference signal index of the PPDU is larger than the second threshold value, selecting the IRC receiver as the target receiver.
Optionally, when the candidate receiver includes an MLD receiver, an IRC receiver, and an MMSE receiver, and the analysis result of the air interface environment includes the number of data streams supported by the air interface environment and an interference signal indicator of the PPDU, the selecting module 502 is configured to:
and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless equipment is not greater than a first threshold value and the index of an interference signal of the PPDU is not greater than a second threshold value, selecting the MMSE receiver as a target receiver.
Optionally, the number of PPDUs is greater than 1.
Optionally, when the candidate receiver includes an MLD receiver and the analysis result of the air interface environment includes the number of data streams supported by the air interface environment, the selecting module 402 is configured to:
determining the number of PPDUs of which the ratio of the number of data streams supported by the corresponding air interface environment to the number of receiving antennas of the wireless equipment is greater than a first threshold value to obtain a first number;
selecting the MLD receiver as the target receiver if the ratio of the first number to the total number of PPDUs is greater than a third threshold.
Optionally, when the candidate receiver includes an IRC receiver and the air interface environment analysis result includes an interference signal indicator of a PPDU, the selecting module 402 is configured to:
determining the number of PPDUs with the interference signal index larger than a second threshold value to obtain a second number;
selecting the IRC receiver as the target receiver if the ratio of the second number to the total number of PPDUs is greater than a fourth threshold.
In summary, in the embodiment of the present application, the wireless device selects a target receiver for receiving data according to the obtained air interface environment analysis result. Because the air interface environment analysis result can represent the channel characteristics between one or more STAs and the wireless device, selecting the target receiver according to the air interface environment analysis result is equivalent to automatically selecting the receiver according to the channel characteristics between the STAs and the wireless device, the selection method is simple, and the switching efficiency of the receiver is improved. And selecting the receiver according to the channel characteristics between the STA and the wireless device can ensure that the appropriate receiver is adopted to receive data in an appropriate environment, that is, the demodulation performance of the receiver is ensured to be matched with an air interface environment, so that the reception benefit of the wireless device can be improved, and the user experience can be improved.
Referring to fig. 6, an embodiment of the present application provides a wireless device 600, where the wireless device 600 includes:
a receiving module 601, configured to perform step 401 in the foregoing embodiment;
a control module 602, configured to perform step 402 in the foregoing embodiment.
Optionally, the plurality of receivers are at least two of an MLD receiver, an IRC receiver, and an MMSE receiver.
Optionally, the reception effect includes at least one of a preamble reception effect and a data part reception performance.
Optionally, the control module 602 is configured to:
the time length for receiving data by the receiver with the best receiving effect is prolonged.
Optionally, the control module 602 is configured to:
and the time length of the receiver with the best receiving effect for receiving data next time is prolonged.
Optionally, the control module 602 is configured to:
the number of times data is received using the receiver with the best reception effect is increased.
In the embodiment of the application, the wireless device selects the receiver with good receiving effect by using the receivers to receive data in turn, so that the automatic selection and switching of the receivers are realized, and the method is simple and convenient and has high efficiency.
It should be noted that: in the wireless device provided in the above embodiment, when the receiver is selected, only the division of the above functional modules is used for illustration, and in practical applications, the above function allocation may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the embodiments of the wireless device and the receiver selection method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the embodiments of the methods for details, which are not described herein again.
In the above embodiments, the implementation may be wholly or partly realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Versatile Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above-mentioned embodiments are provided not to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (36)

1. A method for receiver selection, the method comprising:
the method comprises the steps that a wireless device obtains an air interface environment analysis result, wherein the air interface environment analysis result is used for representing channel characteristics between one or more Stations (STA) and the wireless device;
and the wireless equipment selects a target receiver according to the air interface environment analysis result, wherein the target receiver is used for receiving the data sent by the one or more STAs.
2. The method of claim 1, wherein selecting the target receiver comprises selecting one of candidate receivers as the target receiver, wherein the candidate receivers are at least two of a Maximum Likelihood Detection (MLD) receiver, an Interference Rejection Combining (IRC) receiver, and a Minimum Mean Square Error (MMSE) receiver.
3. The method according to claim 1 or 2, wherein the acquiring, by the wireless device, the air interface environment analysis result includes:
the wireless device receiving a physical layer protocol data unit (PPDU);
the wireless device measures the PPDU to obtain the air interface environment analysis result, where the air interface environment analysis result includes one or more of the following: the number of data streams supported by an air interface environment between the one or more STAs and the wireless device, and an interference signal indicator of the PPDU.
4. The method according to claim 3, wherein when the candidate receiver includes an MLD receiver and the analysis result of the air interface environment includes the number of data streams supported by the air interface environment, the selecting, by the wireless device, the target receiver according to the analysis result of the air interface environment includes:
and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is greater than a first threshold, the wireless device selects the MLD receiver as the target receiver.
5. The method of claim 3, wherein when the candidate receiver comprises an IRC receiver and the air interface environment analysis result comprises an interference signal indicator of the PPDU, the selecting, by the wireless device, a target receiver according to the air interface environment analysis result comprises:
the wireless device selects the IRC receiver as the target receiver if an interference signal indicator of the PPDU is greater than a second threshold.
6. The method of claim 3, wherein when the candidate receivers include an MLD receiver, an IRC receiver, and an MMSE receiver, and the analysis result of the air interface environment includes the number of data streams supported by the air interface environment and the interference signal indicator of the PPDU, the wireless device selects the target receiver according to the analysis result of the air interface environment, which includes:
and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is not greater than a first threshold and the interference signal index of the PPDU is not greater than a second threshold, the wireless device selects the MMSE receiver as the target receiver.
7. The method of claim 3, wherein when the candidate receivers include an MLD receiver and an MMSE receiver, the air interface environment analysis result includes a number of data streams supported by the air interface environment, and the selecting, by the wireless device, a target receiver according to the air interface environment analysis result includes:
and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless device is not greater than a first threshold, the wireless device selects the MMSE receiver as the target receiver.
8. The method of claim 3, wherein when the candidate receivers comprise an IRC receiver and an MMSE receiver, the air interface environment analysis result includes an interference signal indicator of the PPDU, and the wireless device selects the target receiver according to the air interface environment analysis result, comprising:
if the interference signal indicator of the PPDU is not greater than a second threshold, the wireless device selects the MMSE receiver as the target receiver.
9. The method of claim 3, wherein the number of PPDUs is greater than 1.
10. The method according to claim 9, wherein when the candidate receiver includes an MLD receiver and the analysis result of the air interface environment includes a number of data streams supported by the air interface environment, the selecting, by the wireless device, a target receiver according to the analysis result of the air interface environment includes:
the wireless equipment determines the number of PPDUs (direct digital subscriber units) of which the ratio of the number of data streams supported by the corresponding air interface environment to the number of receiving antennas of the wireless equipment is greater than a first threshold value, and obtains a first number;
the wireless device selects the MLD receiver as the target receiver if a ratio of the first number to a total number of PPDUs is greater than a third threshold.
11. The method of claim 9, wherein when the candidate receiver comprises an IRC receiver and the air interface environment analysis result comprises an interference signal indicator of the PPDU, the selecting, by the wireless device, a target receiver according to the air interface environment analysis result comprises:
the wireless equipment determines the number of PPDUs of which the interference signal index is greater than a second threshold value to obtain a second number;
the wireless device selects the IRC receiver as the target receiver if a ratio of the second number to a total number of PPDUs is greater than a fourth threshold.
12. A method for receiver selection, the method comprising:
the wireless device uses multiple receivers to receive data in turn;
the wireless device changes a time period for receiving data using the plurality of receivers according to a reception effect of each of the plurality of receivers, wherein a time period for which a receiver with a good reception effect is used is longer.
13. The method of claim 12, wherein the plurality of receivers are at least two of a Maximum Likelihood Detection (MLD) receiver, an Interference Rejection Combining (IRC) receiver, and a Minimum Mean Square Error (MMSE) receiver.
14. The method according to claim 12 or 13, wherein the reception effect comprises at least one of a preamble reception effect and a data part reception performance.
15. The method of any of claims 12-14, wherein the wireless device changing a duration of receiving data using the plurality of receivers based on the reception effectiveness of each of the plurality of receivers comprises:
the wireless device extends the length of time that the best receiving receiver receives data.
16. The method of claim 15, wherein extending the duration of time that the best receiving receiver receives data comprises:
and the wireless equipment prolongs the time length of the receiver with the best receiving effect for receiving data next time.
17. The method of claim 15, wherein extending the duration of time that the best receiving receiver receives data comprises:
the wireless device increases the number of times data is received using the best receiving receiver.
18. The method of claim 14, wherein the preamble reception effect is determined according to a Cyclic Redundancy Check (CRC) result of a SIG field in a PPDU received by the receiver.
19. The method of claim 18, wherein the preamble reception effect is characterized by a ratio of a number of PPDUs containing SIG fields for which a CRC fails to pass to a number of PPDUs containing SIG fields for which a CRC passes.
20. The method of claim 14, wherein the data portion reception performance is determined based on a CRC result of the data portion in the PPDU received by the receiver.
21. The method of claim 20, wherein the data portion reception performance is characterized by a ratio of a number of PPDUs containing data portions for which CRC fails to pass to a number of PPDUs containing data portions for which CRC passes.
22. The method of claim 20, wherein the data portion reception performance is characterized by a total number of bytes of the MAC layer protocol data unit included in the PPDU passed by the CRC of the included data portion.
23. A wireless device, wherein the wireless device comprises:
an obtaining module, configured to obtain an air interface environment analysis result, where the air interface environment analysis result is used to characterize channel characteristics between one or more stations STA and the wireless device;
and the selecting module is used for selecting a target receiver according to the air interface environment analysis result, wherein the target receiver is used for receiving the data sent by the one or more STAs.
24. The wireless device of claim 23, wherein the selection module is configured to select one of candidate receivers as the target receiver, and wherein the candidate receivers comprise at least two of a Maximum Likelihood Detection (MLD) receiver, an Interference Rejection Combining (IRC) receiver, and a Minimum Mean Square Error (MMSE) receiver.
25. The wireless device of claim 23 or 24, wherein the obtaining module is configured to:
receiving a physical layer protocol data unit (PPDU);
measuring the PPDU to obtain the air interface environment analysis result, wherein the air interface environment analysis result comprises one or more of the following: the number of data streams supported by an air interface environment between the one or more STAs and the wireless device, and an interference signal indicator of the PPDU.
26. The wireless device according to claim 25, wherein when the candidate receiver includes an MLD receiver and the air interface environment analysis result includes a number of data streams supported by the air interface environment, the selecting module is configured to:
and if the ratio of the number of the data streams supported by the air interface environment to the number of the receiving antennas of the wireless equipment is greater than a first threshold, selecting an MLD receiver as the target receiver.
27. The wireless device of claim 25, wherein when the candidate receiver comprises an IRC receiver and the air interface environment analysis result comprises an interference signal indicator of the PPDU, the selecting module is configured to:
and if the interference signal index of the PPDU is larger than a second threshold value, selecting the IRC receiver as the target receiver.
28. The wireless device according to claim 25, wherein when the candidate receivers include an MLD receiver, an IRC receiver, and an MMSE receiver, and the air interface environment analysis result includes a number of data streams supported by the air interface environment and an interference signal indicator of the PPDU, the selecting module is configured to:
and if the ratio of the number of data streams supported by the air interface environment to the number of receiving antennas of the wireless equipment is not greater than a first threshold value and the index of the interference signal of the PPDU is not greater than a second threshold value, selecting an MMSE receiver as the target receiver.
29. The wireless device of claim 25, wherein the number of PPDUs is greater than 1.
30. A wireless device, wherein the wireless device comprises:
a receiving module for receiving data by using a plurality of receivers in turn;
and the control module is used for changing the time length for receiving the data by using the plurality of receivers according to the receiving effect of each receiver in the plurality of receivers, wherein the time length for using the receiver with good receiving effect is longer.
31. The wireless device of claim 30, wherein the reception effect comprises at least one of a preamble reception effect and a data portion reception performance.
32. The wireless device of claim 30 or 31, wherein the control module is configured to:
the time length for receiving data by the receiver with the best receiving effect is prolonged.
33. The wireless device of claim 32, wherein the control module is configured to:
and prolonging the time length of the receiver with the best receiving effect for receiving data next time.
34. The wireless device of claim 32, wherein the control module is configured to:
the number of times data is received using the receiver with the best reception effect is increased.
35. A wireless device, comprising a processor and a transceiver, the transceiver comprising at least two candidate receivers, the processor being configured to perform the receiver selection method of any one of claims 1-11 or 12-22 to control the target receiver to receive data.
36. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the receiver selection method of any of claims 1-11 or 12-22.
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CN107682296A (en) * 2017-08-17 2018-02-09 天津大学 GFDM system high efficiency MMSE method of reseptances and device suitable for FSC

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US20080090606A1 (en) * 2006-10-16 2008-04-17 Samsung Electronics Co., Ltd. Method for selecting receiver mode of mobile terminal with two receivers
CN102195698A (en) * 2010-01-18 2011-09-21 捷讯研究有限公司 Downlink transmission in a multiple-user multiple-input multiple-output MU-MIMO wireless communication system
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