WO2015027395A1 - 一种双工模式自适应方法和装置 - Google Patents

一种双工模式自适应方法和装置 Download PDF

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Publication number
WO2015027395A1
WO2015027395A1 PCT/CN2013/082359 CN2013082359W WO2015027395A1 WO 2015027395 A1 WO2015027395 A1 WO 2015027395A1 CN 2013082359 W CN2013082359 W CN 2013082359W WO 2015027395 A1 WO2015027395 A1 WO 2015027395A1
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WO
WIPO (PCT)
Prior art keywords
duplex mode
current
mode
signal
current duplex
Prior art date
Application number
PCT/CN2013/082359
Other languages
English (en)
French (fr)
Inventor
蒋红丽
青华平
曹萍
刘乔
刘余
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380000952.7A priority Critical patent/CN103703715B/zh
Priority to PCT/CN2013/082359 priority patent/WO2015027395A1/zh
Priority to EP13892670.4A priority patent/EP3026969B1/en
Publication of WO2015027395A1 publication Critical patent/WO2015027395A1/zh
Priority to US15/054,562 priority patent/US9813923B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/20Arrangements for detecting or preventing errors in the information received using signal quality detector
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes

Definitions

  • the present invention relates to network communication technologies, and in particular, to a duplex mode adaptation method and apparatus. Background technique
  • FD Full duplex
  • FDD Frequency Division Duplexing
  • TDD Time Division Duplexing
  • Embodiments of the present invention provide a duplex mode adaptive method and apparatus, which solves the problem that the prior art cannot change the duplex mode during microwave communication, which seriously affects the communication quality under bad channel conditions.
  • a first aspect of the present invention provides a duplex mode adaptation method, including:
  • the current duplex mode is a full duplex mode or a non-full duplex mode.
  • the duplex mode of the wireless communications device is switched to the next duplex mode, specifically Includes:
  • the sending and receiving signal information includes a transmit signal power and a received signal power.
  • the signal quality includes inputting useful Signal signal to noise ratio.
  • the signal quality This includes inputting useful signal power and signal to interference ratio.
  • a second aspect of the present invention provides a duplex mode adaptive apparatus, including:
  • An acquiring unit configured to acquire a modulation mode configuration table, self-interference isolation, and transceiving signal information of the wireless communication device; query the modulation mode configuration table according to a signal quality of a current duplex mode and a signal quality of a non-current duplex mode, Obtaining the maximum modulation mode of the current duplex mode and the maximum modulation mode of the non-current duplex mode;
  • a calculating unit configured to calculate, according to a current duplex mode, the self-interference isolation degree, and the transceiving signal information, a signal quality of the current duplex mode; according to a non-current duplex mode, the self-interference isolation degree, and Transmitting and transmitting signal information, predicting a signal quality of the non-current duplex mode; calculating a maximum spectral efficiency of a current duplex mode according to a maximum modulation mode of the current duplex mode, according to a maximum modulation mode of the non-current duplex mode Calculating a maximum spectral efficiency of the non-current duplex mode; a selecting unit, configured to compare a maximum spectral efficiency of the current duplex mode with a maximum spectral efficiency of the non-current duplex mode, and select a duplex mode with a large spectral efficiency as a lower a one-step duplex mode; a switching unit, configured to switch a duplex mode of the wireless communication device to the next duplex mode.
  • the current duplex mode is a full duplex mode or a non-full duplex mode.
  • the switching unit is configured to include:
  • a determining subunit configured to determine whether the current duplex mode and the next duplex mode are the same
  • a switching subunit configured to switch a duplex mode of the wireless communication device to the next duplex mode if the current duplex mode and the next duplex mode are different; otherwise, maintaining the current duplex The mode is unchanged.
  • the sending and receiving signal information includes a transmit signal power and Receive signal power.
  • the signal quality includes inputting useful Signal signal to noise ratio.
  • the signal quality includes inputting useful Signal power and signal to interference ratio.
  • a duplex mode adaptive method and device provided by an embodiment of the present invention implements adaptive switching between a full-duplex mode and a non-full-duplex mode, and works in a full-duplex mode when channel conditions are good, thereby improving system capacity. When the channel conditions are not good, it works in non-full duplex mode to ensure reliable transmission of services.
  • FIG. 1 is a flowchart of a duplex mode adaptive method according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a communication unit in a wireless communication apparatus according to an embodiment of the present invention
  • FIG. 3 is an implementation of the present invention
  • a block diagram of the analog interference cancellation unit in the communication unit provided by the example
  • FIG. 4 is a structural block diagram of a digital interference cancellation unit in a communication unit according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a duplex mode adaptive device according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram of another duplex mode adaptive device according to an embodiment of the present invention.
  • Embodiments of the present invention provide a duplex mode adaptation method and apparatus.
  • the embodiment of the present invention provides a duplex mode adaptive method, and the process is as shown in FIG. 1 , and the method specifically includes the following steps:
  • Step S110 Acquire a modulation mode configuration table, self-interference isolation, and transceiving signal information of the wireless communication device.
  • the modulation mode configuration table records the correspondence between the modulation mode and the signal quality of the duplex mode, which can be obtained by pre-configuration.
  • the signal quality may include input signal-to-noise ratio (SNR), or the signal quality may include input signal power and signal-to-interference ratio (SIR) as shown in Table 1.
  • SNR input signal-to-noise ratio
  • SIR signal-to-interference ratio
  • a modulation mode configuration table in which the signal-to-noise ratio of the input signal is taken as the signal quality of the duplex mode, including the correspondence between the modulation mode and the signal-to-noise ratio of the input useful signal of the full-duplex mode, and the modulation mode The correspondence between the signal-to-noise ratio of the input signal of the full-duplex mode.
  • the modulation mode configuration table may also include the correspondence between the input useful signal power and the signal-to-interference ratio of the full-duplex mode and the modulation mode, and the non-full-duplex mode.
  • the input signal power and the signal-to-interference ratio correspond to the modulation mode.
  • Self-interference isolation is the ratio of the power received from the interfering signal to the power transmitted from the interfering signal. It is determined by the antenna and/or analog interference cancellation unit and can be obtained by pre-measurement.
  • the transceiving signal information of the wireless communication device may include a transmitted signal power and a received signal power.
  • Transceiver signal information may also include information such as mean square error.
  • Step S120 Calculate the signal quality of the current duplex mode according to the current duplex mode, the self-interference isolation, and the received and received signal information; predict the non-current duplex mode according to the non-current duplex mode, the self-interference isolation, and the transmitted and received signal information. Signal quality.
  • the current duplex mode may be a full duplex mode or a non-full duplex mode. If the current duplex mode is full duplex mode, the non-current duplex mode is not full duplex mode; if the current duplex mode is not full duplex mode, the non-current duplex mode is full duplex mode.
  • the non-full duplex mode may be a Frequency Division Duplexing (FDD) or a Time Division Duplexing (TDD) mode.
  • FDD Frequency Division Duplexing
  • TDD Time Division Duplexing
  • the signal quality can include the input signal to noise ratio of the input signal, or the signal quality can include the input useful signal power and the signal to interference ratio.
  • Step S130 Query the modulation mode configuration table according to the signal quality of the current duplex mode and the signal quality of the non-current duplex mode, and obtain the maximum modulation mode of the current duplex mode and the maximum modulation mode of the non-current duplex mode.
  • the modulation mode configuration table According to the signal quality of the current duplex mode, query the modulation mode configuration table to obtain the maximum modulation mode allowed by the signal quality of the current duplex mode; query the modulation mode configuration table according to the signal quality of the non-current duplex mode, and obtain the non-current duplex The maximum modulation mode allowed by the signal quality of the mode.
  • the current duplex mode is a full-duplex mode.
  • the calculated signal-to-noise ratio is 36 dB.
  • the predicted signal-to-noise ratio of the signal in the predicted full-duplex mode is 38 dB.
  • the maximum modulation mode corresponding to the full-duplex mode that satisfies the current signal-to-noise ratio is 256QAM
  • the maximum modulation mode corresponding to the non-full-duplex mode that satisfies the predicted signal-to-noise ratio is 1024QAM.
  • Step S140 Calculate the maximum spectral efficiency of the current duplex mode according to the maximum modulation mode of the current duplex mode, and calculate the maximum frequency-potential efficiency of the non-current duplex mode according to the maximum modulation mode of the non-current duplex mode.
  • Spectral efficiency is the number of information bits that can be transmitted per unit of spectral bandwidth, related to duplex mode, modulation mode, and signal bandwidth. Assuming that the signal bandwidths of the full-duplex mode and the non-full-duplex mode are the same, the spectral efficiency of the full-duplex mode is twice that of the non-full-duplex mode under the same modulation mode and signal bandwidth.
  • the current duplex mode is full-duplex mode
  • the maximum modulation mode is 256QAM
  • the non-current duplex mode is non-full duplex mode
  • the maximum modulation mode is 1024QAM
  • Step S150 comparing the maximum spectral efficiency of the current duplex mode with the maximum spectral efficiency of the non-current duplex mode, and selecting the duplex mode with large spectral efficiency as the next duplex mode; the modulation mode of the next duplex mode is the next step.
  • the maximum modulation mode of the mode is the maximum modulation mode of the mode.
  • the current duplex mode is full-duplex mode
  • the maximum spectrum efficiency is 16 bits
  • the non-current duplex mode is non-full duplex mode.
  • the maximum spectral efficiency is lObit
  • the next duplex mode continues to be full-duplex. mode.
  • Step S160 switching the duplex mode of the wireless communication device to the next duplex mode.
  • the duplex mode of the wireless communication device is switched to the next duplex mode; otherwise, the current duplex mode is maintained.
  • the control signal may be output to the wireless communication device, and the duplex mode of the wireless communication device is controlled by the control signal to switch the duplex mode of the wireless communication device to the next duplex mode.
  • the service transmission processing unit, the transmission baseband signal processing unit, the service reception processing unit, the reception baseband signal processing unit, the digital interference cancellation unit, and the analog interference cancellation unit in the communication unit are controlled by the control signal. If the current duplex mode is different from the next duplex mode, the control signal is used to indicate that The duplex mode of the wireless communication device is switched to the next duplex mode, otherwise the indication keeps the current duplex mode unchanged.
  • the self-interference isolation in step S110 can be pre-measured and paid by the following method.
  • the wireless communication device may be a microwave device.
  • the service transmission processing unit and the service reception processing unit simultaneously transmit and receive services in full-duplex mode, transmit and receive services according to time division multiplexing in time division duplex mode, and perform frequency division multiplexing in frequency division duplex mode.
  • the way to send and receive business The analog interference cancellation unit and the digital interference cancellation unit perform interference cancellation in full-duplex mode and do not perform interference cancellation in non-full-duplex mode.
  • the transmit baseband signal processing unit and the receive baseband signal processing unit adjust the modulation and demodulation modes under control signal control.
  • R in is the received signal from the receiving antenna
  • F in is the self-interference reference signal, the transmitting RF signal processing unit from the communication unit
  • R x is the output signal after the analog interference cancellation
  • the switch is connected in full-duplex mode and off in non-full-duplex mode.
  • the analog adaptive interference estimator F ⁇ pR x adaptively generating I (n.
  • R in U in + I in , where U in is the received useful signal in the received signal R in .
  • the analog adaptive disturbance estimator estimates the received signal completely.
  • the self-interference signal I in so that the interference cancellation after The output signal is equal to the received useful signal U in .
  • ⁇ and ⁇ are deviated, and there is residual self-interference I x in the output signal !
  • the transmitter of the peer wireless communication device is turned off, the signal is transmitted by the local wireless communication device, and the signal power output by the analog interference cancellation unit in the local wireless communication device is tested, thereby obtaining self-interference isolation.
  • the signal quality of the current duplex mode in step S120 can be calculated by the following method. Taking the signal quality as the input signal-to-noise ratio as an example, the input signal-to-noise ratio of the digital interference cancellation unit in Figure 2 is the signal quality of the current duplex mode.
  • Figure 4 is a block diagram showing the structure of the digital interference cancellation unit in the communication unit.
  • the input signal to noise ratio of the digital interference cancellation unit can be calculated by the transmitted signal power and the received signal power of the current wireless communication device, and the specific methods include:
  • the antenna receives signals with self-interference signals, and the analog interference cancellation unit and the digital interference cancellation unit perform interference cancellation.
  • the received RF signal processing unit between the analog interference cancellation unit and the digital interference cancellation unit processes the self-interference signal and the useful signal in the same manner, and the input signal-to-interference ratio SIR of the digital interference cancellation unit is equal to the output signal-to-interference ratio SIR of the analog interference cancellation unit. Since the analog circuit introduces noise into the input signal, and the greater the input signal power, the noise power is greater.
  • the digital input signal noise ratio SNR of the total interference cancellation unit with the received RF signal processing unit R x input signal power P r i.e. the analog output signal canceling unit power of R x P r
  • the input signal SNR of the digital interference cancellation unit of the current duplex mode can be obtained as follows: If the current duplex mode is not full-duplex mode, there is no self-interference signal in the antenna received signal, and the analog interference cancellation unit and the digital interference cancellation unit do not perform interference cancellation.
  • the input signal-to-noise ratio of the digital interference cancellation unit can also be obtained by the absolute value of the Mean Square Error (MSE) of the current duplex mode output signal, ie,
  • MSE Mean Square Error
  • the amount of SNR degradation can be obtained in advance by system testing or simulation.
  • R(n) is the received signal from the A/D conversion unit;
  • F(n) is the self-interference reference signal from the transmit baseband signal processing unit;
  • d(n) is the expected received signal, which may be the training code;
  • ⁇ ) is the self-interference estimation signal output by the digital adaptive interference estimator;
  • ⁇ ( ⁇ ) is the output signal after interference cancellation;
  • e(n) is the error between the output signal and the expected received signal;
  • is equivalent to the output signal-to-noise ratio SNR.
  • the switch is connected in full-duplex mode and off in non-full-duplex mode.
  • the digital adaptive interference estimator adaptively generates an estimated value ⁇ ( ⁇ ) received from the interference signal based on the reference signal F(n) and the error signal e(n).
  • U(n) is a useful signal
  • I(n) is a self-interference signal
  • N(n) is a noise signal.
  • the ⁇ ( ⁇ ) generated by the digital interference canceller adaptively changes with the error signal e(n), minimizing the output MSE.
  • the estimated self-interference signal ⁇ ( ⁇ ) deviates from the self-interference signal ⁇ ( ⁇ ) in the received signal, and the residual interference signal becomes the noise in the output signal ⁇ ( ⁇ ).
  • the received signal R(n) U(n) + N(n)
  • P u is the useful signal U (n) of the power
  • B is The power of the self-interference signal I(n)
  • P n is the power of the noise signal N(n).
  • the estimated self-interference signal ⁇ ( ⁇ ) deviates from the self-interference signal I(n) in the received signal, and the residual interference signal I(n) - ⁇ ( ⁇ )
  • the noise in the output signal ⁇ ( ⁇ ) is such that the output useful signal SNR is degraded relative to the input useful signal SNR.
  • the amount of SNR degradation can be obtained in advance by system testing or simulation.
  • the signal quality of the non-current duplex mode in step S120 can be predicted and obtained by the following method. Taking the signal quality as the input signal-to-noise ratio as an example, the input signal-to-noise ratio of the digital interference cancellation unit in Figure 2 is the signal quality of the non-current duplex mode.
  • the input signal-to-noise ratio (SNR) of the current non-duplex mode can be calculated by the transmitted signal power and received signal power of the predicted wireless communication device, and the specific methods include:
  • the non-current duplex mode is not full duplex mode. If the current local and the opposite transmit power are kept unchanged, after the full-duplex mode is switched to the non-full duplex mode, there is no self-interference signal in the antenna received signal, and the analog interference canceling unit and the digital interference canceling unit do not perform interference cancellation.
  • the input signal-to-interference ratio SIR' of the digital interference cancellation unit is equal to the analog interference
  • the input wanted signal to noise ratio SNR' ⁇ 1+ r ( i 1/SIR, ', ) is obtained for the non-current duplex mode.
  • the input signal to noise ratio SNR' of the non-current duplex mode can also pass the current duplex
  • the input of the mode is obtained by adding the signal-to-noise ratio of the signal plus or minus the signal-to-noise ratio deviation of the two modes. If the current duplex mode is full-duplex mode, the input signal-to-noise ratio of the non-current duplex mode is the current input useful signal-to-noise ratio plus the signal-to-noise ratio deviation; if the current duplex mode is the non-full duplex mode, Then, the input signal to noise ratio of the non-current duplex mode is the current input useful signal to noise ratio minus the signal to noise ratio deviation.
  • the input signal power of the full duplex mode is greater than the input signal power of the non-full duplex mode, and the introduced noise power is also greater than the noise power of the non-full duplex mode. Therefore, the input signal to noise ratio of the digital interference cancellation unit of the full duplex mode is smaller than the input signal to noise ratio of the input signal of the non-full duplex mode. The deviation of the signal-to-noise ratio of the input of the two modes can be obtained through system testing.
  • a duplex mode adaptive method implements adaptive switching between a full-duplex mode and a non-full-duplex mode, and works in a full-duplex mode when channel conditions are good, thereby improving system capacity and channel conditions. When not good, work in non-full duplex mode to ensure reliable transmission of business.
  • the embodiment of the present invention provides a duplex mode adaptive device 500. The structure thereof is as shown in FIG. 5, and includes:
  • the obtaining unit 510 is configured to acquire a modulation mode configuration table, self-interference isolation, and transceiving signal information of the wireless communication device. Query the modulation mode configuration table according to the signal quality of the current duplex mode and the signal quality of the non-current duplex mode. The maximum modulation mode of the current duplex mode and the maximum modulation mode of the non-current duplex mode;
  • the calculating unit 520 is configured to calculate a signal quality of the current duplex mode according to the current duplex mode, the self-interference isolation, and the sent/received signal information; and predict the non-current dual according to the non-current duplex mode, the self-interference isolation, and the sent/received signal information.
  • Signal quality of the mode calculating the maximum spectral efficiency of the current duplex mode according to the maximum modulation mode of the current duplex mode, and calculating the maximum spectral efficiency of the non-current duplex mode according to the maximum modulation mode of the non-current duplex mode;
  • the selecting unit 530 is configured to compare the maximum spectral efficiency of the current duplex mode with the non-current duplex mode.
  • the maximum spectrum efficiency is selected as the next-duplex mode in which the spectrum efficiency is large;
  • the switching unit 540 is configured to switch the duplex mode of the wireless communication device to the next duplex mode.
  • the current duplex mode may be a full duplex mode or a non-full duplex mode.
  • the current duplex mode is the full duplex mode, and the current duplex mode is the non-full duplex mode.
  • the current duplex mode is the non-full duplex mode, and the non-current duplex mode is the full duplex mode.
  • the switching unit 540 may be configured to include:
  • the determining subunit 541 is configured to determine whether the current duplex mode and the next duplex mode are the same; the switching subunit 542 is configured to switch the duplex mode of the wireless communication device if the current duplex mode and the next duplex mode are different. For the next duplex mode; otherwise keep the current duplex mode unchanged.
  • the switching subunit 542 can be specifically configured to output a control signal to the wireless communication device, control the duplex mode of the wireless communication device by the control signal, and switch the duplex mode of the wireless communication device to the next duplex mode.
  • the service transmission processing unit, the transmission baseband signal processing unit, the service reception processing unit, the reception baseband signal processing unit, the digital interference cancellation unit, and the analog interference cancellation unit in the communication unit are controlled by the control signal. If the current duplex mode is different from the next duplex mode, the control signal is used to indicate that the duplex mode of the wireless communication device is switched to the next duplex mode, otherwise the indication keeps the current duplex mode unchanged.
  • the transceiving signal information of the wireless communication device may include a transmit signal power and a received signal power.
  • the signal quality may include inputting a useful signal to noise ratio, or the signal quality may include inputting useful signal power and a signal to interference ratio.
  • An embodiment of the present invention provides another duplex mode adaptive device, which has the structure shown in FIG. 6, and includes:
  • a receiver 610 configured to receive a modulation mode configuration table, self-interference isolation, and transceiving signal information of the wireless communication device;
  • the processor 630 is coupled to the memory 620 and the receiver 610 for controlling the execution of the program routine, and specifically includes:
  • the modulation mode configuration table According to the signal quality of the current duplex mode and the signal quality of the non-current duplex mode, query the modulation mode configuration table to obtain the maximum modulation mode of the current duplex mode and the maximum modulation mode of the non-current duplex mode;
  • the current duplex mode of the wireless communication device is switched to the next duplex mode.
  • the current duplex mode is a full duplex mode or a non-full duplex mode.
  • the transceiving signal information of the wireless communication device includes a transmission signal power and a reception signal power.
  • the signal quality may include inputting a useful signal to noise ratio, or the signal quality may include inputting useful signal power and a signal to interference ratio.
  • the embodiment of the present invention is a duplex mode adaptive device, and the information exchange, execution process, and the like between the internal units are based on the same concept as the method embodiment of the present invention. For details, refer to the description in the method embodiment of the present invention. , will not repeat them here.
  • a duplex mode adaptive device implements adaptive switching between a full-duplex mode and a non-full-duplex mode, and works in a full-duplex mode when channel conditions are good, thereby improving system capacity and channel conditions. When not good, work in non-full duplex mode to ensure reliable transmission of business.
  • a person skilled in the art can understand that all or part of the steps of the foregoing embodiment can be implemented by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Abstract

本发明涉及网络通信领域,具体公开了一种双工模式自适应方法,包括:获取无线通信装置的调制模式配置表、自干扰隔离度和收发信号信息,计算当前双工模式的信号质量,预测非当前双工模式的信号质量;查询所述调制模式配置表,获取当前双工模式的最大调制模式和非当前双工模式的最大调制模式;根据所述当前双工模式的最大调制模式计算当前双工模式的最大频谱效率,根据所述非当前双工模式的最大调制模式计算非当前双工模式的最大频谱效率;比较所述当前双工模式的最大频谱效率和所述非当前双工模式的最大频谱效率,选择频谱效率大的双工模式作为下一步双工模式;将所述无线通信装置的双工模式切换为所述下一步双工模式。

Description

一种双工模式自适应方法和装置 技术领域
本发明涉及网络通信技术, 尤其涉及一种双工模式自适应方法和装置。 背景技术
随着移动通信服务需求的增长, 对网络带宽需求以指数规律增长。 微波 传送作为移动回传的重要手段, 带宽需求也越来越大。 微波频谱资源有限, 提高微波频谱利用率显得尤为重要。 目前的全双工 (FD, Full Duplexing )技 术, 在空口上以一个频率同时进行收发信号, 相对于传统的频分双工 ( Frequency Division Duplexing, FDD )和时分双工( Time Division Duplexing, TDD )这两种双工模式, 全双工提高了系统频谱利用率。
将全双工技术应用到微波通信中, 存在两种极端情况: 在天气状况良好 时, 大气对信号衰减小, 系统接收的有用信号远大于自干扰信号, 采用全双 工通信可进一步提高系统容量; 在天气恶劣时, 大气对信号衰减大, 系统接 收的有用信号远小于自干扰信号, 如果此时系统依然采用全双工模式通信, 将严重影响通信质量, 降低系统容量。 发明内容
本发明的实施例提供了一种双工模式自适应方法和装置, 解决现有技术 在微波通信过程中不能改变双工模式, 导致恶劣信道条件下严重影响通信质 量的问题。
本发明的实施例采用如下技术方案:
本发明第一方面提供了一种双工模式自适应方法, 包括:
获取无线通信装置的调制模式配置表、 自干扰隔离度和收发信号信息; 根据当前双工模式、 所述自干扰隔离度和所述收发信号信息, 计算当前 双工模式的信号质量; 根据非当前双工模式、 所述自干扰隔离度和所述收发 信号信息, 预测非当前双工模式的信号质量;
根据所述当前双工模式的信号质量和所述非当前双工模式的信号质量, 查询所述调制模式配置表, 获取当前双工模式的最大调制模式和非当前双工 模式的最大调制模式;
根据所述当前双工模式的最大调制模式计算当前双工模式的最大频谱效 率, 根据所述非当前双工模式的最大调制模式计算非当前双工模式的最大频 谱效率;
比较所述当前双工模式的最大频谱效率和所述非当前双工模式的最大频 谱效率, 选择频谱效率大的双工模式作为下一步双工模式;
将所述无线通信装置的双工模式切换为所述下一步双工模式。
在第一种可能的实现方式中, 所述当前双工模式为全双工模式或者非全 双工模式。
结合第一方面或第一方面的第一种可能的实现方式, 在第二种可能的实 现方式中, 所述将所述无线通信装置的双工模式切换为所述下一步双工模式, 具体包括:
如果所述当前双工模式和所述下一步双工模式不同, 将所述无线通信装 置的双工模式切换为所述下一步双工模式; 否则保持所述当前双工模式不变。
结合第一方面、 第一方面的第一种可能的实现方式或第二种可能的实现 方式, 在第三种可能的实现方式中, 所述收发信号信息包括发送信号功率和 接收信号功率。
结合第一方面、 第一方面的第一种可能的实现方式、 第二种可能的实现 方式或第三种可能的实现方式, 在第四种可能的实现方式中, 所述信号质量 包括输入有用信号信噪比。
结合第一方面、 第一方面的第一种可能的实现方式、 第二种可能的实现 方式或第三种可能的实现方式, 在第五种可能的实现方式中, 所述信号质量 包括输入有用信号功率和信干比。
本发明第二方面提供了一种双工模式自适应装置, 包括:
获取单元, 用于获取无线通信装置的调制模式配置表、 自干扰隔离度和 收发信号信息; 根据当前双工模式的信号质量和非当前双工模式的信号质量, 查询所述调制模式配置表, 获取当前双工模式的最大调制模式和非当前双工 模式的最大调制模式;
计算单元, 用于根据当前双工模式、 所述自干扰隔离度和所述收发信号 信息, 计算所述当前双工模式的信号质量; 根据非当前双工模式、 所述自干 扰隔离度和所述收发信号信息, 预测所述非当前双工模式的信号质量; 根据 所述当前双工模式的最大调制模式计算当前双工模式的最大频谱效率, 根据 所述非当前双工模式的最大调制模式计算非当前双工模式的最大频谱效率; 选择单元, 用于比较所述当前双工模式的最大频谱效率和所述非当前双 工模式的最大频谱效率, 选择频谱效率大的双工模式作为下一步双工模式; 切换单元, 用于将所述无线通信装置的双工模式切换为所述下一步双工 模式。
在第一种可能的实现方式中, 所述当前双工模式为全双工模式或者非全 双工模式。
结合第二方面或第二方面的第一种可能的实现方式, 在第二种可能的实 现方式中, 所述切换单元具备包括:
判断子单元, 用于判断所述当前双工模式和所述下一步双工模式是否相 同;
切换子单元, 用于如果所述当前双工模式和所述下一步双工模式不同, 将所述无线通信装置的双工模式切换为所述下一步双工模式; 否则保持所述 当前双工模式不变。
结合第二方面、 第二方面的第一种可能的实现方式或第二种可能的实现 方式, 在第三种可能的实现方式中, 所述收发信号信息包括发送信号功率和 接收信号功率。
结合第二方面、 第二方面的第一种可能的实现方式、 第二种可能的实现 方式或第三种可能的实现方式, 在第四种可能的实现方式中, 所述信号质量 包括输入有用信号信噪比。
结合第二方面、 第二方面的第一种可能的实现方式、 第二种可能的实现 方式或第三种可能的实现方式, 在第五种可能的实现方式中, 所述信号质量 包括输入有用信号功率和信干比。
本发明实施例提供的一种双工模式自适应方法和装置, 实现全双工模式 和非全双工模式的自适应切换, 在信道条件好时以全双工模式工作, 提高系 统容量, 在信道条件不好时以非全双工模式工作, 保证业务的可靠传输。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例中所需要 使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的 一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提 下, 还可以根据这些附图获得其它的附图。
图 1为本发明的实施例提供的一种双工模式自适应方法的流程图; 图 2为本发明的实施例提供的无线通信装置中的通信单元的结构框图; 图 3 为本发明的实施例提供的通信单元中的模拟干扰抵消单元的结构框 图;
图 4 为本发明的实施例提供的通信单元中的数字干扰抵消单元的结构框 图;
图 5为本发明的实施例提供的一种双工模式自适应装置的结构框图; 图 6为本发明的实施例提供的另一种双工模式自适应装置的结构框图。 具体实施方式 本发明实施例提供了一种双工模式自适应方法和装置。 为了更好的理解 本发明的技术方案, 下面结合附图对本发明实施例进行详细描述。
应当明确, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的 实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造性劳 动前提下所获得的所有其它实施例, 都属于本发明保护的范围。
本发明实施例提供了一种双工模式自适应方法, 其流程如图 1所示, 该 方法具体包括如下步骤:
步骤 S110, 获取无线通信装置的调制模式配置表、 自干扰隔离度和收发 信号信息。
本实施例中, 调制模式配置表记录了调制模式和双工模式的信号质量之 间的对应关系, 可以通过预先配置获得。 信号质量可以包括输入有用信号信 噪比( Signal-to-Noise Ratio, SNR ), 或者, 信号质量可以包括输入有用信号 功率和信干比( Signal-to-Interference Ratio, SIR )„ 如表 1所示, 为以双工模 式的信号质量为输入有用信号的信噪比为例的调制模式配置表, 包括调制模 式与全双工模式的输入有用信号的信噪比的对应关系, 以及调制模式与非全 双工模式的输入有用信号的信噪比的对应关系。 调制模式配置表也可以包括 全双工模式的输入有用信号功率和信干比二者与调制模式的对应关系, 以及 非全双工模式的输入有用信号功率和信干比二者与调制模式的对应关系。
表 1 调制模式配置表
Figure imgf000007_0001
128 QAM 33 28
256 QAM 36 32
512 QAM 39 35
1024QAM 42 38
• . . — • . . 自干扰隔离度为接收自干扰信号功率与发送自干扰信号功率之比, 由天 线和 /或模拟干扰抵消单元确定, 可以通过预先测量获得。
无线通信装置的收发信号信息可以包括发送信号功率和接收信号功率。 收发信号信息还可以包括均方误差等信息 。
步骤 S120, 根据当前双工模式、 自干扰隔离度和收发信号信息, 计算当 前双工模式的信号质量; 根据非当前双工模式、 自干扰隔离度和收发信号信 息, 预测非当前双工模式的信号质量。
本实施例中, 当前双工模式可以为全双工模式或者非全双工模式。 如果 当前双工模式为全双工模式, 则非当前双工模式为非全双工模式; 如果当前 双工模式为非全双工模式, 则非当前双工模式为全双工模式。
非全双工模式可以是频分双工 (Frequency Division Duplexing, FDD )或 者时分双工 (Time Division Duplexing, TDD )模式。
信号质量可以包括输入有用信号信噪比, 或者, 信号质量可以包括输入 有用信号功率和信干比。
步骤 S130,根据当前双工模式的信号质量和非当前双工模式的信号质量, 查询调制模式配置表, 获取当前双工模式的最大调制模式和非当前双工模式 的最大调制模式。
根据当前双工模式的信号质量, 查询调制模式配置表, 获得当前双工模 式的信号质量允许的最大调制模式; 根据非当前双工模式的信号质量, 查询 调制模式配置表, 获得非当前双工模式的信号质量允许的最大调制模式。
例如,当前双工模式为全双工模 · 算得到的有用信号信噪比为 36dB, 预测的非全双工模式的有用信号信噪比为 38dB。 查询表 1 , 满足当前信噪比 的全双工模式对应的最大调制模式为 256QAM, 满足预测信噪比的非全双工 模式对应的最大调制模式为 1024QAM。
步骤 S140, 根据当前双工模式的最大调制模式计算当前双工模式的最大 频谱效率, 根据非当前双工模式的最大调制模式计算非当前双工模式的最大 频-潜效率。
频谱效率为单位频谱带宽可传输的信息比特数, 与双工模式、 调制模式 和信号带宽有关。 假设全双工模式和非全双工模式的信号带宽相同, 则在相 同调制模式和信号带宽下, 全双工模式的频谱效率是非全双工模式的 2倍。 例如, 当前双工模式为全双工模式, 最大调制模式为 256QAM, 频谱效率可 等效为 2 * log2(256)=16bit。 非当前双工模式为非全双工模式, 最大调制模式 为 1024QAM, 频谱效率为 log2(1024)=10bit。
步骤 S150, 比较当前双工模式的最大频谱效率和非当前双工模式的最大 频谱效率, 选择频谱效率大的双工模式作为下一步双工模式; 下一步双工模 式的调制模式为下一步双工模式的最大调制模式。
例如, 当前双工模式为全双工模式, 其最大频谱效率为 16bit, 非当前双 工模式为非全双工模式, 其最大频谱效率为 lObit, 则下一步双工模式继续保 持为全双工模式。
步骤 S160, 将无线通信装置的双工模式切换为下一步双工模式。
本实施例中, 如果当前双工模式和下一步双工模式不同, 将无线通信装 置的双工模式切换为下一步双工模式; 否则保持当前双工模式不变。
可以向无线通信装置输出控制信号, 通过控制信号控制无线通信装置的 双工模式, 将无线通信装置的双工模式切换为下一步双工模式。 具体地, 通 过控制信号控制通信单元中的业务发送处理单元、 发送基带信号处理单元、 业务接收处理单元、 接收基带信号处理单元、 数字干扰抵消单元和模拟干扰 抵消单元。 如果当前双工模式和下一步双工模式不同, 控制信号用于指示将 无线通信装置的双工模式切换为下一步双工模式, 否则指示保持当前双工模 式不变。 本实施例中, 步骤 S110中的自干扰隔离度可以通过下述方法预先测量获 付。
图 2所示为一种无线通信装置中的通信单元的结构框图, 无线通信装置 可以为微波设备。 业务发送处理单元和业务接收处理单元在全双工模式下同 时发送和接收业务, 在时分双工模式下按照时分复用的方式发送和接收业务, 在频分双工模式下按照频分复用的方式发送和接收业务。 模拟干扰抵消单元 和数字干扰抵消单元在全双工模式下进行干扰抵消, 在非全双工模式下不进 行干扰抵消。 发送基带信号处理单元和接收基带信号处理单元在控制信号控 制下调整调制和解调制模式。
图 3为通信单元中的模拟干扰抵消单元的结构框图。 Rin为接收信号, 来 自接收天线; Fin为自干扰参考信号,来自通信单元的发送射频信号处理单元; Rx为模拟干扰抵消之后的输出信号; 为模拟自适应干扰估计器对接收信号 Rin中自干扰信号 Iin的估计值。 开关在全双工模式下处于连接状态, 在非全双 工模式下处于断开状态。模拟自适应干扰估计器根据 Fit^pRx自适应的产生 I(n
在全双工模式下, Rin = Uin + Iin , 其中, Uin为接收信号 Rin中的接收有用 信号。 I(n随着输出信号 Rx自适应变化,使输出信号 Rx功率最小。理想情况下, 模拟自适应干扰估计器能完全估计接收信号 。中的自干扰信号 Iin, 使得干扰 抵消之后的输出信号等于接收有用信号 Uin。 但实际情况下, 由于器件的非理 想性, ^与^是有偏差的, 输出信号!^中还存在残余自干扰 Ix
在非全双工模式下, Rin = Uin , 模拟自适应干扰估计器产生的 I(n为零, 输出 Rx = Rin。 这里假设器件对接收信号 Rin没有插损, 如果考虑插损则输出 信号 Rx的功率为接收信号 Rin的功率减去插损。
自干扰隔离度 D 为模拟干扰抵消单元输出的自干扰信号 Ix的功率 B与发 送信号 Tx的功率 Pt之比, 即 D = 。 关闭对端无线通信装置的发射器, 由本端 无线通信装置发射信号, 并测试本端无线通信装置中模拟干扰抵消单元输出 的信号功率, 由此获得自干扰隔离度。 本实施例中, 步骤 S120中的当前双工模式的信号质量可以通过下述方法 计算获得。 以信号质量为输入有用信号信噪比为例, 图 2 中数字干扰抵消单 元的输入有用信号信噪比即当前双工模式的信号质量。 图 4 为通信单元中的 数字干扰抵消单元的结构框图。
数字干扰抵消单元的输入有用信号信噪比可以通过当前的无线通信装置 的发送信号功率和接收信号功率计算得到, 具体方法包括:
如果当前双工模式为全双工模式, 则天线接收信号中有自干扰信号, 模 拟干扰抵消单元和数字干扰抵消单元进行干扰抵消。
模拟干扰抵消单元中,模拟干扰抵消单元的输出信号!^中的自干扰信号 Ix 的功率 Pi为: Pi = Pt * D, 其中, Pt为发送信号 7^的功率; 接收有用信号 Ux的功 率 Pu为: Pu = Pr— Pi ,其中, Pr为模拟抵消单元输出信号 的功率;信干比 SIR为:
SIR =
Pi
模拟干扰抵消单元与数字干扰抵消单元之间的接收射频信号处理单元对 自干扰信号和有用信号的处理相同, 数字干扰抵消单元的输入信干比 SIR等 于模拟干扰抵消单元的输出信干比 SIR。 因模拟电路会对输入信号引入噪声, 且输入信号功率越大, 噪声功率越大。 数字干扰抵消单元的输入信号信噪比 SNR总与接收射频信号处理单元的输入信号 Rx的功率 Pr (即模拟抵消单元的输 出信号 Rx的功率 Pr )之间满足一定的函数关系。 因此, 数字干扰抵消单元中, 输入信号信噪比 SNR总为: SNR¾、 = f(Pr)。 根据输入信号信噪比 SNR总和信干 比 SIR 可获得当前双工模式的数字干扰抵消单元的输入有用信号 SNR为: 如果当前双工模式为非全双工模式, 则天线接收信号中没有自干扰信号, 模拟干扰抵消单元和数字干扰抵消单元不进行干扰抵消, 当前双工模式的输 入有用信号 SNR为: SNR = SNR总 = f(Pr)。
另外, 数字干扰抵消单元的输入有用信号信噪比也可以通过当前双工模 式输出信号的均方误差 ( Mean Square Error, MSE ) 的绝对值, 即 |MSE|, 加 上信噪比恶化量得到, SNR恶化量可以通过系统测试或仿真预先得到。
图 4为数字干扰抵消单元的结构框图。 R(n)为接收信号, 来自于 A/D转 换单元; F(n)为自干扰参考信号, 来自于发送基带信号处理单元; d(n)为期望 接收信号, 可以是训练码; Γ(η)为数字自适应干扰估计器输出的自干扰估计 信号; Υ(η)为经过干扰抵消之后的输出信号; e(n)为输出信号与期望接收信号 之间的误差; MSE 为均方误差, MSE = 10 * log10 ( |e(n)|2 ) , |MSE|等价于 输出信噪比 SNR。 开关在全双工模式下处于连接状态, 在非全双工模式下处 于断开状态。数字自适应干扰估计器根据参考信号 F(n)和误差信号 e(n)自适应 的产生接收自干扰信号的估计值 Γ(η)。
在全双工模式下, 接收信号 R(n)为: R(n)= U(n)+ I(n)+ N(n)。 其中, U(n) 为有用信号, I(n)为自干扰信号, N(n)为噪声信号。数字干扰抵消器产生的 Γ(η) 随着误差信号 e(n)自适应变化, 使输出 MSE最小。
理想情况下, 自适应干扰估计器能完全估计出接收信号中自干扰信号, 即 Γ(η) = I(n) , 则输出信号 Y(n) = U(n) + N(X)。 但由于自适应干扰估计器的 非理想性, 估计的自干扰信号 Γ(η)与接收信号中的自干扰信号 Ι(η)存在偏差, 残余干扰信号就成为输出信号 Υ(η)中的噪声。 在非全双工模式下, 接收信号 R(n)= U(n)+ N(n), 数字干扰抵消器产生的 Γ(η)为零, 输出信号 Y(n) = R(n)。
全双工模式的接收信号 R(n)的 SNR 为: SNR = ^i, 有用信号 U(n) 的 SNR为: SNR = ^, 其中, Pu为有用信号 U(n)的功率, B为自干扰信号 I(n) 的功率, Pn为噪声信号 N(n)的功率。 非全双工模式的接收信号 R(n)的 SNR总等 于有用信号 U(n)的 SNR, 即5 1总 = 5 1 = ^。 由于自适应干 4尤估计器的非理 想性,估计的自干扰信号 Γ(η)与接收信号中的自干扰信号 I(n)存在偏差, 残余 干扰信号 I(n) - Γ(η)就成为输出信号 Υ(η)中的噪声, 使得输出有用信号 SNR 相对输入有用信号 SNR恶化。 SNR恶化量可以通过系统测试或仿真预先得到。 本实施例中, 步骤 S120中的非当前双工模式的信号质量可以通过下述方 法预测获得。 以信号质量为输入有用信号信噪比为例, 图 2 中数字干扰抵消 单元的输入有用信号信噪比即非当前双工模式的信号质量。
当前非双工模式的输入有用信号信噪比 SNR'可以通过预测的无线通信装 置的发送信号功率和接收信号功率计算得到, 具体方法包括:
如果当前双工模式为全双工模式, 则非当前双工模式为非全双工模式。 若保持当前本端和对端发射功率不变, 则全双工模式切换成非全双工模式后, 天线接收信号中没有自干扰信号, 模拟干扰抵消单元和数字干扰抵消单元不 进行干扰抵消。模拟抵消单元的输出信号功率 为: = Pr— Pt * D。根据 P可 以获得非当前双工模式的输入有用信号信噪比 SNR'为: SNR' = SNR'¾ = f(Pr')0 如果当前双工模式为非全双工模式, 则非当前双工模式为全双工模式。 若保持当前本端和对端发射功率不变, 则非全双工模式切换成全双工模式后, 天线接收信号中有自干扰信号, 模拟干扰抵消单元和数字干扰抵消单元进行 干扰抵消操作。 模拟干扰抵消单元输出自干扰信号功率 P为: P = Pt * D, 模 拟抵消单元的输出信号功率 P为: P = Pr + Pt * D, 模拟干扰抵消单元输出信 干比 SIR'为: SIR' = 。 数字干扰抵消单元的输入信干比 SIR'等于模拟干扰抵
Pi
消单元输出信干比 SIR' , 输入信号信噪比 SNR' = f(Pr')。 根据 SIR'和 SNR' 可
SNR',
获得非当前双工模式的输入有用信号信噪比 SNR' = λ 1+ r(i1/SIR,'、)。
另外, 非当前双工模式的输入有用信号信噪比 SNR'也可以通过当前双工 模式的输入有用信号信噪比加上或减去两种模式的信噪比偏差得到。 如果当 前双工模式为全双工模式, 则非当前双工模式的输入有用信号信噪比为当前 输入有用信噪比加上信噪比偏差; 如果当前双工模式为非全双工模式, 则非 当前双工模式的输入有用信号信噪比为当前输入有用信噪比减去信噪比偏差。
接收射频信号处理单元在输入有用信号功率相同的情况下, 全双工模式 的输入信号功率大于非全双工模式的输入信号功率, 其引入的噪声功率也大 于非全双工模式的噪声功率, 因此全双工模式的数字干扰抵消单元的输入有 用信号信噪比小于非全双工模式的输入有用信号信噪比。 两种模式的输入有 用信号信噪比的偏差值可以通过系统测试得到。 本发明实施例提供的一种双工模式自适应方法, 实现全双工模式和非全 双工模式的自适应切换,在信道条件好时以全双工模式工作,提高系统容量, 在信道条件不好时以非全双工模式工作, 保证业务的可靠传输。 本发明实施例提供了一种双工模式自适应装置 500, 其结构如图 5所示, 包括:
获取单元 510, 用于获取无线通信装置的调制模式配置表、 自干扰隔离度 和收发信号信息; 根据当前双工模式的信号质量和非当前双工模式的信号质 量, 查询调制模式配置表, 获取当前双工模式的最大调制模式和非当前双工 模式的最大调制模式;
计算单元 520, 用于根据当前双工模式、 自干扰隔离度和收发信号信息, 计算当前双工模式的信号质量; 根据非当前双工模式、 自干扰隔离度和收发 信号信息, 预测非当前双工模式的信号质量; 根据当前双工模式的最大调制 模式计算当前双工模式的最大频谱效率, 根据非当前双工模式的最大调制模 式计算非当前双工模式的最大频谱效率;
选择单元 530,用于比较当前双工模式的最大频谱效率和非当前双工模式 的最大频谱效率, 选择频谱效率大的双工模式作为下一步双工模式; 切换单元 540, 用于将无线通信装置的双工模式切换为下一步双工模式。 进一步地, 当前双工模式可以为全双工模式或者非全双工模式。 当前双 工模式为全双工模式, 非当前双工模式为非全双工模式; 或者, 当前双工模 式为非全双工模式, 非当前双工模式为全双工模式。
进一步地, 切换单元 540可以具备包括:
判断子单元 541 , 用于判断当前双工模式和下一步双工模式是否相同; 切换子单元 542, 用于如果当前双工模式和下一步双工模式不同, 将无线 通信装置的双工模式切换为下一步双工模式; 否则保持当前双工模式不变。
进一步地,切换子单元 542可以具体用于向无线通信装置输出控制信号, 通过控制信号控制无线通信装置的双工模式, 将无线通信装置的双工模式切 换为下一步双工模式。 具体地, 通过控制信号控制通信单元中的业务发送处 理单元、 发送基带信号处理单元、 业务接收处理单元、 接收基带信号处理单 元、 数字干扰抵消单元和模拟干扰抵消单元。 如果当前双工模式和下一步双 工模式不同, 控制信号用于指示将无线通信装置的双工模式切换为下一步双 工模式, 否则指示保持当前双工模式不变。
进一步地, 无线通信装置的收发信号信息可以包括发送信号功率和接收 信号功率。
进一步地, 信号质量可以包括输入有用信号信噪比, 或者, 信号质量可 以包括输入有用信号功率和信干比。 本发明实施例提供了另一种双工模式自适应装置, 其结构如图 6所示, 包括:
接收器 610, 用于接收无线通信装置的调制模式配置表、 自干扰隔离度和 收发信号信息;
存储器 620, 用于存储包括程序例程的信息; 处理器 630,与存储器 620和接收器 610耦合,用于控制程序例程的执行, 具体包括:
根据当前双工模式、 自干扰隔离度和收发信号信息, 计算当前双工模式 的信号质量; 根据非当前双工模式、 自干扰隔离度和收发信号信息, 预测非 当前双工模式的信号质量;
根据当前双工模式的信号质量和非当前双工模式的信号质量, 查询调制 模式配置表, 获取当前双工模式的最大调制模式和非当前双工模式的最大调 制模式;
根据当前双工模式的最大调制模式计算当前双工模式的最大频谱效率, 根据非当前双工模式的最大调制模式计算非当前双工模式的最大频谱效率; 比较当前双工模式的最大频谱效率和非当前双工模式的最大频谱效率, 选择频谱效率大的双工模式作为下一步双工模式;
将无线通信装置的当前双工模式切换为下一步双工模式。
进一步地, 当前双工模式为全双工模式或者非全双工模式。
进一步地, 无线通信装置的收发信号信息包括发送信号功率和接收信号 功率。
进一步地, 信号质量可以包括输入有用信号信噪比, 或者, 信号质量可 以包括输入有用信号功率和信干比。 上述实施例一种双工模式自适应装置, 其内部各单元之间的信息交互、 执行过程等内容, 由于与本发明方法实施例基于同一构思, 具体内容可参见 本发明方法实施例中的叙述, 此处不再贅述。
本发明实施例提供的一种双工模式自适应装置, 实现全双工模式和非全 双工模式的自适应切换,在信道条件好时以全双工模式工作,提高系统容量, 在信道条件不好时以非全双工模式工作, 保证业务的可靠传输。 本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于一计 算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施例的 流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体(Read-Only Memory, ROM )或随机存^ ^己忆体 ( Random Access Memory, RAM )等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保 护范围应以权利要求的保护范围为准。

Claims

权利 要求 书
1、 一种双工模式自适应方法, 其特征在于, 包括:
获取无线通信装置的调制模式配置表、 自干扰隔离度和收发信号信息; 根据当前双工模式、 所述自干扰隔离度和所述收发信号信息, 计算当前双 工模式的信号质量; 根据非当前双工模式、 所述自干扰隔离度和所述收发信号 信息, 预测非当前双工模式的信号质量;
根据所述当前双工模式的信号质量和所述非当前双工模式的信号质量, 查 询所述调制模式配置表, 获取当前双工模式的最大调制模式和非当前双工模式 的最大调制模式;
根据所述当前双工模式的最大调制模式计算当前双工模式的最大频谱效率, 根据所述非当前双工模式的最大调制模式计算非当前双工模式的最大频谱效率; 比较所述当前双工模式的最大频谱效率和所述非当前双工模式的最大频谱 效率, 选择频谱效率大的双工模式作为下一步双工模式;
将所述无线通信装置的双工模式切换为所述下一步双工模式。
2、 根据权利要求 1所述的方法, 其特征在于, 所述当前双工模式为全双工 模式或者非全双工模式。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述将所述无线通信装 置的双工模式切换为所述下一步双工模式, 具体包括:
如果所述当前双工模式和所述下一步双工模式不同, 将所述无线通信装置 的双工模式切换为所述下一步双工模式; 否则保持所述当前双工模式不变。
4、 根据权利要求 1-3任一项所述的方法, 其特征在于, 所述收发信号信息 包括发送信号功率和接收信号功率。
5、 根据权利要求 1-4任一项所述的方法, 其特征在于, 所述信号质量包括 输入有用信号信噪比。
6、 根据权利要求 1-4任一项所述的方法, 其特征在于, 所述信号质量包括 输入有用信号功率和信干比。
7、 一种双工模式自适应装置, 其特征在于, 包括:
获取单元, 用于获取无线通信装置的调制模式配置表、 自干扰隔离度和收 发信号信息; 根据当前双工模式的信号质量和非当前双工模式的信号质量, 查 询所述调制模式配置表, 获取当前双工模式的最大调制模式和非当前双工模式 的最大调制模式;
计算单元, 用于根据当前双工模式、 所述自干扰隔离度和所述收发信号信 息, 计算所述当前双工模式的信号质量; 根据非当前双工模式、 所述自干扰隔 离度和所述收发信号信息, 预测所述非当前双工模式的信号质量; 根据所述当 前双工模式的最大调制模式计算当前双工模式的最大频谱效率, 根据所述非当 前双工模式的最大调制模式计算非当前双工模式的最大频谱效率;
选择单元, 用于比较所述当前双工模式的最大频谱效率和所述非当前双工 模式的最大频谱效率, 选择频谱效率大的双工模式作为下一步双工模式;
切换单元, 用于将所述无线通信装置的双工模式切换为所述下一步双工模 式。
8、 根据权利要求 7所述的装置, 其特征在于, 所述当前双工模式为全双工 模式或者非全双工模式。
9、根据权利要求 7或 8所述的装置,其特征在于,所述切换单元具备包括: 判断子单元, 用于判断所述当前双工模式和所述下一步双工模式是否相同; 切换子单元, 用于如果所述当前双工模式和所述下一步双工模式不同, 将 所述无线通信装置的双工模式切换为所述下一步双工模式; 否则保持所述当前 双工模式不变。
10、根据权利要求 7-9任一项所述的装置, 其特征在于, 所述收发信号信息 包括发送信号功率和接收信号功率。
11、 根据权利要求 7-10任一项所述的装置, 其特征在于, 所述信号质量包 括输入有用信号信噪比。
12、 根据权利要求 7-10任一项所述的装置, 其特征在于, 所述信号质量包 括输入有用信号功率和信千比。
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