WO2018049683A1 - Frequency point switching method and apparatus, and wireless base station - Google Patents

Frequency point switching method and apparatus, and wireless base station Download PDF

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WO2018049683A1
WO2018049683A1 PCT/CN2016/099343 CN2016099343W WO2018049683A1 WO 2018049683 A1 WO2018049683 A1 WO 2018049683A1 CN 2016099343 W CN2016099343 W CN 2016099343W WO 2018049683 A1 WO2018049683 A1 WO 2018049683A1
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narrowband
frequency point
frequency
base station
signal
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PCT/CN2016/099343
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French (fr)
Chinese (zh)
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洪晨
鲁志兵
焦富强
王志国
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海能达通信股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/06Reselecting a communication resource in the serving access point

Abstract

A frequency point switching method and apparatus, and a wireless base station, which are used for a wide and narrow band fused networking communication system so as to improve the narrow band communication performance of the wide and narrow band fused networking communication system. In the communication system, a wide band and a narrow band share a section of continuous frequency points, wherein a plurality of narrow band frequency points configured in the section of continuous frequency points are covered by the wide band. The method comprises: a wireless base station acquiring wide band channel measurement information; the wireless base station determining, according to the wide band channel measurement information, an optimal narrow band frequency point from the plurality of narrow band frequency points; and the wireless base station instructing a narrow band radio frequency module and a narrow band terminal to synchronously switch from a current working narrow band frequency point to the optimal narrow band frequency point.

Description

频点切换方法和装置以及无线基站Frequency point switching method and device and wireless base station 技术领域Technical field

本发明涉及通信技术领域,具体涉及一种频点切换方法和装置以及无线基站。The present invention relates to the field of communications technologies, and in particular, to a frequency point switching method and apparatus, and a wireless base station.

背景技术Background technique

宽窄带融合组网技术,既可以保留窄带可靠的话音通话以及短信息功能,又可以通过宽带接入技术进行多媒体信息传输,在专用集群通信中的应用越来越广泛。如何充分发挥宽窄带信号的优势互补,最大限度发挥系统组网性能以解决日益尖锐的频谱资源贫乏问题显得格外重要。宽窄带融合组网通信系统中,为了减少站点建设的开销,宽带与窄带融合的方法通常选择共站的形式,即宽带与窄带共用硬件处理单元或者是放在同一个站点的两套独立处理单元,两者可以通过本地接口完成非常低时延的信息交互,特别是控制信息的交互。Wide-narrowband and converged networking technology can not only maintain narrow-band reliable voice calls and short-message functions, but also transmit multimedia information through broadband access technology, and is widely used in private cluster communication. How to make full use of the advantages and advantages of wide and narrowband signals, and maximize the performance of system networking to solve the increasingly acute problem of poor spectrum resources is particularly important. In the broadband and narrowband converged networking communication system, in order to reduce the overhead of site construction, the method of broadband and narrowband convergence usually adopts the form of co-station, that is, broadband and narrowband shared hardware processing units or two independent processing units placed on the same site. The two can complete very low latency information interaction through the local interface, especially the control information interaction.

请参阅图1,现有宽窄带融合通信系统中,宽带与窄带两者工作在不同的带宽范围,工作频点没有交集。无法实现窄带工作频点在整个融合带宽内的切换,更不可能利用对方测量信息进行灵活的频率调度。Referring to FIG. 1 , in the existing wide and narrowband converged communication system, both the broadband and the narrowband operate in different bandwidth ranges, and the working frequency points do not intersect. It is impossible to realize the switching of the narrowband working frequency point in the entire fusion bandwidth, and it is even more impossible to use the measurement information of the other party for flexible frequency scheduling.

请参阅图2,现有的宽带通信技术,比如3GPP(Third Generation Partnership Project,第三代合作伙伴计划)的LTE(Long Term Evolution,长期演进)系统,对信道的测量和频点调度范围只是针对该信道内不同的子载波进行调度,不涉及宽带信道之外的其他信道(比如窄带信道)的频域资源调度问题。Referring to FIG. 2, the existing broadband communication technology, such as the 3GPP (Third Generation Partnership Project) LTE (Long Term Evolution) system, the measurement of the channel and the frequency point scheduling range are only for Different subcarriers in the channel are scheduled, and the frequency domain resource scheduling problem of other channels than the wideband channel (such as a narrowband channel) is not involved.

请参阅图3,现有宽窄带融合通信系统频点相对固定,由于受到信道传播多径的影响,在接收端获取的信号必然存在频率选择性衰落。受此影响,窄带原来工作的频点可能处于深衰落的频点范围,此时幅度衰减过大,导致接收端信噪比过低,传输的可靠性大大降低。现有的LTE宽带频域调度系统虽然能够进行频域调度,但是只限于对宽带信道内部的子载波进行调度,无法对宽带信道以外的其他信道进行频域调度,所以在解决窄带工作频点处于深衰落问题上也无能为力。 Referring to FIG. 3, the existing wide-narrowband converged communication system has relatively fixed frequency points. Due to the influence of channel propagation multipath, the signal acquired at the receiving end must have frequency selective fading. Affected by this, the frequency of the original narrow-band operation may be in the frequency range of deep fading. At this time, the amplitude attenuation is too large, resulting in too low signal-to-noise ratio at the receiving end, and the reliability of transmission is greatly reduced. Although the existing LTE broadband frequency domain scheduling system can perform frequency domain scheduling, it is limited to scheduling subcarriers inside the wideband channel, and cannot perform frequency domain scheduling on other channels other than the wideband channel, so it is in the solution of narrowband working frequency. There is nothing to do with the deep decline.

发明内容Summary of the invention

本发明实施例提供一种频点切换方法和装置以及无线基站,以提高宽窄带融合组网通信系统的窄带通信性能。Embodiments of the present invention provide a frequency point switching method and apparatus, and a radio base station, to improve narrowband communication performance of a wide-narrowband converged network communication system.

本发明第一方面提供一种频点切换方法,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述方法包括:无线基站获取宽带信道测量信息;所述无线基站根据所述宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;所述无线基站指示窄带射频模块与窄带终端,从当前工作的窄带频点同步切换至所述最佳窄带频点。A first aspect of the present invention provides a frequency point switching method, which is used in a wide-narrowband and converged network communication system, in which a wideband and a narrowband share a continuous frequency point, and a plurality of consecutive frequency points are configured. The narrowband frequency points are all covered by the broadband; the method includes: the wireless base station acquiring the wideband channel measurement information; the wireless base station determining the optimal narrowband frequency point from the plurality of narrowband frequency points according to the wideband channel measurement information; The wireless base station instructs the narrowband radio frequency module and the narrowband terminal to synchronously switch from the currently operating narrowband frequency point to the optimal narrowband frequency point.

本发明第二方面提供一种频点切换装置,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述装置包括:信息获取模块,用于获取宽带信道测量信息;算法处理模块,用于根据所述宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;时序指示模块,用于指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。A second aspect of the present invention provides a frequency point switching apparatus for a wide-narrowband and fusion network communication system, in which a wideband and a narrowband share a continuous frequency point, and the plurality of frequency points are configured in a plurality of consecutive frequency points. The narrowband frequency points are all covered by the broadband; the device includes: an information acquiring module, configured to acquire the broadband channel measurement information; and an algorithm processing module, configured to determine the best from the plurality of narrowband frequency points according to the broadband channel measurement information a narrowband frequency point; a timing indication module, configured to indicate that the narrowband radio frequency module and the narrowband terminal are synchronously switched from the currently operating narrowband frequency point to the optimal narrowband frequency point.

本发明第三方面提供一种无线基站,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述无线基站包括处理器和存储器以及射频电路,所述射频电路包括宽带射频模块和窄带射频模块;所述存储器用于存储程序,所述处理器与所述存储器通过总线连接,当所述无线基站运行时,所述处理器执行所述存储器存储的所述程序,以使所述无线基站执行如本发明第一方面所述的频点切换方法。A third aspect of the present invention provides a radio base station for a wide-narrowband converged network communication system, in which a wideband and a narrowband share a continuous frequency point, and a plurality of narrowband frequencies configured in the continuous frequency point The points are all covered by a broadband; the wireless base station includes a processor and a memory and a radio frequency circuit, the radio frequency circuit includes a broadband radio frequency module and a narrowband radio frequency module; the memory is used to store a program, and the processor and the memory pass through the bus Connecting, when the wireless base station is in operation, the processor executes the program stored by the memory to cause the wireless base station to perform the frequency point switching method according to the first aspect of the present invention.

由上可见,在本发明的一些可行的实施方式中,针对现有宽窄带组网的频点相对固定,无法解决窄带处于深衰落的问题,提出了一种宽窄带融合组网下的窄带自适应频点切换技术方案。该方案中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;无线基站可以根据宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;指示窄带射频模 块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点,实现了对窄带频点进行灵活调度分配。该技术方案使得窄带能够有效地避开深衰落的频点范围,以获得窄带信道的频率分集增益,大大提高了窄带通信性能,进一步保证了窄带通信的可靠性,提升了覆盖范围。It can be seen from the above that in some feasible implementation manners of the present invention, the frequency of the existing wide and narrowband networking is relatively fixed, and the problem that the narrowband is in deep fading cannot be solved, and a narrowband self-band under the wide-narrowband fusion networking is proposed. Adapt to the frequency point switching technology solution. In the solution, the broadband and the narrowband share a continuous frequency point, and the plurality of narrowband frequency points configured in the continuous frequency point are covered by the broadband; the wireless base station may use the broadband channel measurement information from the plurality of narrowband frequency points. Determining the best narrowband frequency point; indicating a narrowband RF mode The block and the narrowband terminal are synchronously switched from the currently operating narrowband frequency point to the optimal narrowband frequency point, thereby implementing flexible scheduling allocation for the narrowband frequency point. The technical solution enables the narrowband to effectively avoid the frequency range of the deep fading, thereby obtaining the frequency diversity gain of the narrowband channel, greatly improving the performance of the narrowband communication, further ensuring the reliability of the narrowband communication, and improving the coverage.

附图说明DRAWINGS

为了更清楚地说明本发明实施例技术方案,下面将对实施例和现有技术描述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的前提下,还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments and the prior art description will be briefly described below. Obviously, the drawings in the following description are only some implementations of the present invention. For example, other drawings may be obtained from those skilled in the art without any inventive effort.

图1是现有宽窄带频点分配结构示意图;1 is a schematic diagram of a conventional wide and narrow band frequency point distribution structure;

图2是现有宽带LTE频域调度示意图;2 is a schematic diagram of existing broadband LTE frequency domain scheduling;

图3是现有宽窄带频率选择性衰落示意图;3 is a schematic diagram of a conventional wide-narrowband frequency selective fading;

图4是本发明宽窄带频点分配结构示意图;4 is a schematic diagram of a wide and narrow band frequency point distribution structure of the present invention;

图5是本发明一个实施例提供的频点切换方法的流程示意图;FIG. 5 is a schematic flowchart of a frequency point switching method according to an embodiment of the present invention;

图6是本发明另一实施例提供的频点切换方法的流程示意图;6 is a schematic flowchart of a frequency point switching method according to another embodiment of the present invention;

图7是本发明一个实施例提供的频点切换装置的结构示意图;FIG. 7 is a schematic structural diagram of a frequency point switching apparatus according to an embodiment of the present invention; FIG.

图8是本发明一个实施例提供的无线基站的结构示意图。FIG. 8 is a schematic structural diagram of a radio base station according to an embodiment of the present invention.

具体实施方式detailed description

为了使本技术领域的人员更好地理解本发明方案,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分的实施例,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做出创造性劳动前提下所获得的所有其他实施例,都应当属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

本发明的说明书和权利要求书及上述附图中的术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的 过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。The terms "comprising" and "comprising" and variations of the invention are intended to be in the meaning For example, it contains a series of steps or units The processes, methods, systems, products, or devices are not limited to the listed steps or units, but may alternatively include steps or units not listed, or, optionally, also include those processes, methods, products, or devices Other steps or units inherent.

如本发明背景技术部分所述,现有宽窄带组网的频点相对固定,无法解决窄带处于深衰落的问题。而且,现有宽窄带融合通信系统中,宽带与窄带两者工作在不同的带宽范围,工作频点没有交集。无法实现窄带工作频点在整个融合带宽内的切换,更不可能利用对方测量信息进行灵活的频率调度。As described in the background of the present invention, the frequency of the existing wide and narrow band networking is relatively fixed, and the problem that the narrow band is in deep fading cannot be solved. Moreover, in the existing wide-narrowband converged communication system, both the wideband and the narrowband operate in different bandwidth ranges, and the working frequency points do not intersect. It is impossible to realize the switching of the narrowband working frequency point in the entire fusion bandwidth, and it is even more impossible to use the measurement information of the other party for flexible frequency scheduling.

针对上述问题,本发明提出一种宽窄带融合组网下的窄带自适应频点切换技术,以充分利用宽带信道测量信息对窄带频点进行灵活调度分配,使得窄带能够有效地避开深衰落的频点范围,最终获得窄带信道的频率分集增益,大大提高了现有的窄带通信性能,进一步保证窄带通信的可靠性,提升其覆盖范围。Aiming at the above problems, the present invention proposes a narrowband adaptive frequency point switching technology under a wide-narrowband fusion network to fully utilize wideband channel measurement information to flexibly schedule and distribute narrowband frequency points, so that the narrowband can effectively avoid deep fading. In the frequency range, the frequency diversity gain of the narrowband channel is finally obtained, which greatly improves the performance of the existing narrowband communication, further ensures the reliability of the narrowband communication, and improves the coverage thereof.

下面通过具体实施例,分别进行详细的说明。The detailed description will be respectively made below through specific embodiments.

本发明实施例提供一种频点切换方法,用于宽窄带融合组网通信系统。The embodiment of the invention provides a frequency point switching method for a wide-narrowband fusion networking communication system.

所述通信系统中,宽带和窄带共用一段连续的频点,所述一段连续的频点中配置多个窄带频点,且配置的多个窄带频点均被宽带所覆盖,例如图4所示,是本发明中宽窄带频点分配结构的一个示意图。并且,所述通信系统中,宽带和窄带采用共站方式,即宽带与窄带共用硬件处理单元或者是分别用放在同一个站点的两套独立的处理单元,两者可以通过本地接口完成非常低时延的信息交互,特别是控制信息的交互。In the communication system, the broadband and the narrowband share a continuous frequency point, and the plurality of narrowband frequency points are arranged in the continuous frequency point, and the configured plurality of narrowband frequency points are covered by the broadband, for example, as shown in FIG. It is a schematic diagram of the wide and narrow band frequency point distribution structure in the present invention. Moreover, in the communication system, the broadband and narrowband adopt a co-station mode, that is, a broadband and narrowband shared hardware processing unit or two independent processing units respectively placed at the same site, and the two can be completed through the local interface very low. Delayed information interaction, especially control information interaction.

请参考图5,所述频点切换方法可包括:Referring to FIG. 5, the frequency point switching method may include:

110、无线基站获取宽带信道测量信息。110. The wireless base station acquires broadband channel measurement information.

120、无线基站根据宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点。120. The wireless base station determines an optimal narrowband frequency point from the plurality of narrowband frequency points according to the wideband channel measurement information.

本发明实施例中,无线基站的宽带处理单元可以称为宽带基站,无线基站的窄带处理单元可以称为窄带基站。宽带基站可以根据宽带信道的测量信息获得宽带信道的基本统计信息,由于所述多个窄带频点均被宽带所覆盖,则宽带基站同时也获得了多个窄带频点的基本统计信息,从而可以根据获取的基本统计信息确定其中的最佳窄带频点。其中,所述基本统计信息包括信道估计信息 (Channel Estimation,CE),具体可以利用信道估计信息,尤其是频域上的信道估计信息,即信道频率响应信息,通过计算,来确定最佳窄带频点。In the embodiment of the present invention, the broadband processing unit of the radio base station may be referred to as a broadband base station, and the narrowband processing unit of the radio base station may be referred to as a narrowband base station. The broadband base station can obtain basic statistical information of the wideband channel according to the measurement information of the wideband channel. Since the plurality of narrowband frequency points are covered by the broadband, the broadband base station also obtains basic statistical information of the plurality of narrowband frequency points, thereby The best narrowband frequency points are determined based on the obtained basic statistical information. Wherein the basic statistical information includes channel estimation information (Channel Estimation, CE), specifically using channel estimation information, especially channel estimation information in the frequency domain, that is, channel frequency response information, by calculation, to determine the optimal narrowband frequency point.

一些实施例中,步骤120的具体实现过程可以包括:In some embodiments, the specific implementation process of step 120 may include:

121、无线基站根据宽带信道测量信息,计算每个窄带频点附近的若干个子载波的信道估计信息。121. The radio base station calculates channel estimation information of several subcarriers in the vicinity of each narrowband frequency point according to the wideband channel measurement information.

122、根据所述信道估计信息计算每个窄带频点的信干噪比,将信干躁比最高的窄带频点确定为最佳窄带频点。122. Calculate a signal to interference and noise ratio of each narrowband frequency point according to the channel estimation information, and determine a narrowband frequency point with a highest signal to the best narrowband frequency point.

窄带基站会使用窄带频点附近的若干个子载波与窄带终端进行通信。本步骤中,可以通过计算每个窄带频点附近的若干个子载波的信道估计信息,来进一步确定最佳窄带频点。确定方法是,根据每个窄带频点附近的若干个子载波的信道估计信息,计算每个窄带频点的信干噪比(Signal to Interference and Noise Ratio,SINR),将信干躁比最高的窄带频点确定为最佳窄带频点。其中,信干噪比是信号与干扰加噪声功率比的简称。The narrowband base station will communicate with the narrowband terminal using several subcarriers near the narrowband frequency point. In this step, the optimal narrowband frequency point can be further determined by calculating channel estimation information of several subcarriers near each narrowband frequency point. The determining method is to calculate a Signal to Interference and Noise Ratio (SINR) of each narrowband frequency point according to channel estimation information of several subcarriers near each narrowband frequency point, and to narrow the signal to the highest narrowband ratio The frequency point is determined as the best narrowband frequency point. Among them, the signal to interference and noise ratio is the abbreviation of the signal to interference plus noise power ratio.

需要说明的是,步骤120的具体实现过程包括但不限于步骤121、步骤122,还可以包括其他实现方法,在此不作限定。It should be noted that the specific implementation process of the step 120 includes, but is not limited to, the step 121 and the step 122, and may also include other implementation methods, which are not limited herein.

一些实施例中,步骤121的具体实现过程可以包括:In some embodiments, the specific implementation process of step 121 may include:

1211、无线基站对宽带信道接收到的时域信号进行时频域的转换得到频域信号;1211. The radio base station performs time-frequency domain conversion on the time domain signal received by the broadband channel to obtain a frequency domain signal.

1212、从得到的频域信号中提取每个窄带频点附近的若干个子载波的数据;1212. Extract, from the obtained frequency domain signal, data of several subcarriers near each narrowband frequency point;

1213、利用宽带信道中的导频信息和提取的子载波的数据,计算每个窄带频点附近的若干个子载波的信道估计信息。1213. Calculate channel estimation information of several subcarriers in the vicinity of each narrowband frequency point by using pilot information in the wideband channel and data of the extracted subcarriers.

需要说明的是,步骤121的具体实现过程包括但不限于步骤1211、步骤1212、步骤1213,还可以包括其他实现方法,在此不作限定。It should be noted that the specific implementation process of the step 121 includes, but is not limited to, the step 1211, the step 1212, and the step 1213, and may further include other implementation methods, which are not limited herein.

一些实施例中,步骤122的具体实现过程可以包括:In some embodiments, the specific implementation process of step 122 may include:

1221、利用信道估计信息和所述频域信号估计噪声功率;1221. Estimating noise power by using channel estimation information and the frequency domain signal;

1222、利用信道估计信息计算每个窄带频点附近的若干个子载波的传输功率; 1222. Calculate, by using channel estimation information, transmission power of several subcarriers in the vicinity of each narrowband frequency point;

1223、根据所述传输功率以及噪声功率计算每个窄带频点的信干躁比。1223. Calculate a signal to interference ratio of each narrowband frequency point according to the transmission power and the noise power.

需要说明的是,步骤122的具体实现过程包括但不限于步骤1221、步骤1222、步骤1223,还可以包括其他实现方法,在此不作限定。It should be noted that the specific implementation process of step 122 includes, but is not limited to, step 1221, step 1222, and step 1223, and may also include other implementation methods, which are not limited herein.

可选的,可以在多个时间段计算得到每个窄带频点的多个信干躁比,对每个窄带频点的在不同时间段的多个信干躁比进行时域平均处理,从而得到更精确的信干噪比。信干噪比越高,说明信道传输性能越好,信干噪比最高的窄带频点就是最佳窄带频点。Optionally, multiple signal to interference ratios of each narrowband frequency point may be calculated in multiple time periods, and time-domain averaging processing is performed on multiple signal-to-coherence ratios of each narrow-band frequency point in different time periods, thereby Get a more accurate signal to interference and noise ratio. The higher the signal to interference and noise ratio, the better the channel transmission performance, and the narrowband frequency point with the highest signal to interference and noise ratio is the best narrowband frequency point.

130、指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。130. Instruct the narrowband radio frequency module and the narrowband terminal to synchronously switch from the currently working narrowband frequency point to the optimal narrowband frequency point.

窄带基站会使用多个窄带频点中的一个与窄带终端进行通信,每次确定出最佳窄带频点时,无线基站就可以指示窄带基站中的窄带射频模块,以及窄带终端,从当前工作的窄带频点同步切换至所述最佳窄带频点。The narrowband base station communicates with the narrowband terminal using one of the plurality of narrowband frequency points, and each time the optimal narrowband frequency point is determined, the wireless base station can indicate the narrowband radio frequency module in the narrowband base station, and the narrowband terminal, from the current working The narrowband frequency points are synchronously switched to the optimal narrowband frequency point.

具体的指示方法可以包括:无线基站根据计算得到的最佳窄带频点的信息,同时发送频点切换指令至窄带射频模块与窄带终端,以指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。The specific indication method may include: the radio base station simultaneously sends the frequency point switching instruction to the narrowband radio frequency module and the narrowband terminal according to the calculated information of the optimal narrowband frequency point, to indicate the narrowband frequency point of the narrowband radio frequency module and the narrowband terminal from the current working. Synchronously switching to the optimal narrowband frequency point.

其中,无线基站的宽带基站,可通过本地控制接口,利用无线控制信道指令携带计算得到的最佳窄带频点的信息,同时发送至窄带基站无线资源管理单元以及窄带终端资源管理单元,窄带基站无线资源管理单元以及窄带终端资源管理单元可以分别发出包括最佳窄带频点的信息的指令给窄带射频模块与窄带终端,以指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。请参考图4,图4同时也是本发明对抗窄带频率选择性衰落示意图,从图中可以看出,已选择其中的最佳窄带频点作为当前工作的窄带频点。The broadband base station of the radio base station can carry the calculated information of the best narrowband frequency point by using the local control interface, and simultaneously transmit the information to the narrowband base station radio resource management unit and the narrowband terminal resource management unit, and the narrowband base station radio. The resource management unit and the narrowband terminal resource management unit may respectively send an instruction including the information of the optimal narrowband frequency point to the narrowband radio frequency module and the narrowband terminal to indicate that the narrowband radio frequency module and the narrowband terminal are synchronously switched from the currently operating narrowband frequency point to the The best narrowband frequency point. Please refer to FIG. 4. FIG. 4 is also a schematic diagram of the present invention against narrowband frequency selective fading. As can be seen from the figure, the best narrowband frequency point has been selected as the current working narrowband frequency point.

需要说明的是,宽带基站进行宽带信道的子载波调度时,避开窄带基站和窄带终端当前工作的最佳窄带频点,以避免宽窄带相互干扰。It should be noted that when the broadband base station performs subcarrier scheduling of the wideband channel, the best narrowband frequency point currently working of the narrowband base station and the narrowband terminal is avoided to avoid interference between the wide and narrow bands.

值得说明的是,随着终端移动,信道环境发生变化,最佳工作频点可能会随之发生变化,优选实施例中,可以设定经过周期(TS)后重复进行信道检测与频点切换,即按周期重复执行上述步骤110、120和130,实现动态频点切换,以保证窄带能够一直工作在最佳窄带频点,取得最佳传输性能。所说的周 期可以根据实际需要选择,例如一些具体实现中可以是十毫秒到百毫秒或者秒或者10秒或百秒之间的数值,例如50毫秒或100毫秒或500毫秒甚至5秒或50秒等,本文对此不予限制。It is worth noting that as the terminal moves, the channel environment changes, and the optimal operating frequency may change accordingly. In the preferred embodiment, the channel detection and frequency switching may be repeated after the period (TS). That is, the above steps 110, 120, and 130 are repeatedly performed in a cycle to implement dynamic frequency point switching to ensure that the narrowband can always operate at the optimal narrowband frequency point to achieve optimal transmission performance. Said week The period can be selected according to actual needs, for example, in some specific implementations, it may be a value between ten milliseconds to hundred milliseconds or seconds or between 10 seconds or hundreds of seconds, such as 50 milliseconds or 100 milliseconds or 500 milliseconds or even 5 seconds or 50 seconds, etc. There is no limit to this.

可以理解,本发明实施例的上述方案可以在无线基站设备具体实施。该方案中宽带和窄带共用一段连续的频点,一段连续的频点中配置的多个窄带频点均被宽带覆盖;无线基站可以根据宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点,实现了对窄带频点进行灵活调度分配。该方案使得窄带能够有效地避开深衰落的频点范围,以获得窄带信道的频率分集增益,大大提高了窄带通信性能,进一步保证了窄带通信的可靠性,提升了覆盖范围。It can be understood that the foregoing solution of the embodiment of the present invention may be specifically implemented in a wireless base station device. In the solution, the broadband and the narrowband share a continuous frequency point, and the plurality of narrowband frequency points configured in a continuous frequency point are covered by the broadband; the wireless base station may determine the most from the plurality of narrowband frequency points according to the wideband channel measurement information. The narrowband frequency point is indicated; the narrowband radio frequency module and the narrowband terminal are synchronously switched from the currently working narrowband frequency point to the optimal narrowband frequency point, thereby implementing flexible scheduling allocation for the narrowband frequency point. The scheme enables the narrowband to effectively avoid the frequency range of the deep fading, thereby obtaining the frequency diversity gain of the narrowband channel, greatly improving the performance of the narrowband communication, further ensuring the reliability of the narrowband communication, and improving the coverage.

为便于更好的理解本发明实施例提供的技术方案,下面结合具体的计算公式对本发明实施例方法进行介绍。To facilitate a better understanding of the technical solutions provided by the embodiments of the present invention, the method of the embodiments of the present invention is introduced in conjunction with a specific calculation formula.

本实施例提出一种应用于宽窄带融合组网的自适应信道频点切换技术,采用宽带与窄带融合共站形式,即宽带与窄带共用硬件处理单元或者是放在同一个站点的两套独立处理单元,两者可以通过本地接口完成非常低时延的控制信息交互。在频率分配上,宽窄带共用一段连续的频点,窄带的所有工作频点均被宽带所覆盖,是一种宽窄带站点与频谱双融合组网系统。This embodiment proposes an adaptive channel frequency point switching technique applied to a wide-narrowband fusion networking, which adopts a broadband and narrowband fusion co-station form, that is, a broadband and narrowband shared hardware processing unit or two independent sets placed on the same site. The processing unit can perform very low latency control information interaction through the local interface. In the frequency allocation, the wide and narrow bands share a continuous frequency point, and all the working frequency points of the narrow band are covered by the broadband, which is a wide-narrowband site and spectrum dual-fusion networking system.

请参考图6,本实施例的一种应用于宽窄带融合组网的自适应信道频点切换方法可以包括如下步骤:Referring to FIG. 6, an adaptive channel frequency point switching method applied to a wide-narrowband fusion networking in this embodiment may include the following steps:

步骤S1:无线基站通过对接收信号(时域信号)进行预处理,完成时频域的转换,将时域信号转换为频域信号,并且提取每个窄带可能工作频点附近的若干子载波的频域数据。其中,窄带可能工作频点即上文所述的窄带频点。Step S1: The radio base station performs pre-processing on the received signal (time domain signal) to complete time-frequency domain conversion, converts the time domain signal into a frequency domain signal, and extracts several subcarriers near each possible narrowband operating frequency point. Frequency domain data. Among them, the narrowband may work at a frequency point, that is, the narrowband frequency point described above.

步骤S2:利用已知的导频信息计算步骤S1中提取的子载波的信道估计信息,所述导频信息是宽带信道中已知的发射信号导频信息,计算公式如下:Step S2: Calculate channel estimation information of the subcarrier extracted in step S1 by using known pilot information, where the pilot information is known transmission signal pilot information in the wideband channel, and the calculation formula is as follows:

Figure PCTCN2016099343-appb-000001
Figure PCTCN2016099343-appb-000001

其中,Y为接收到的导频信号,S为已知的发射导频参考信号,H为信道估计信息,H的行向量H1,-K,t,H1,-K+1,t,H1,-K+2,t,...H1,0,t,...H1,K-1,t,H1,K,t指t时刻窄带频点1附近的、以频点1为中心的-K到K个子载波的信道估计值。由于接收到的信号已经转换为频域信号,这里的信道估计信息是频域上、即信道频率响应信息。Where Y is the received pilot signal, S is the known transmitted pilot reference signal, and H is the channel estimation information, H is the row vector H 1, -K, t , H 1, -K+1, t , H 1,-K+2,t ,...H 1,0,t ,...H 1,K-1,t ,H 1,K,t refer to the vicinity of the narrow band frequency point 1 at time t Point 1 is the channel estimate of the center-K to K subcarriers. Since the received signal has been converted into a frequency domain signal, the channel estimation information here is the frequency domain, that is, the channel frequency response information.

步骤S3:利用信道估计信息以及接收信号的信息估计噪声的功率Ni:Step S3: estimating the power of the noise Ni using the channel estimation information and the information of the received signal:

Figure PCTCN2016099343-appb-000002
Figure PCTCN2016099343-appb-000002

其中,Ni为噪声功率(含干扰),Y为接收到的导频信号,S为已知的发射导频参考信号,H为信道估计信息。Where Ni is the noise power (including interference), Y is the received pilot signal, S is the known transmitted pilot reference signal, and H is the channel estimation information.

步骤S4:利用信道估计信息计算传输功率P:Step S4: Calculating the transmission power P using the channel estimation information:

Figure PCTCN2016099343-appb-000003
Figure PCTCN2016099343-appb-000003

步骤S5:根据信道传输功率以及噪声功率计算所有窄带频点的信干噪比:Step S5: Calculate the signal to interference and noise ratio of all narrowband frequency points according to channel transmission power and noise power:

Figure PCTCN2016099343-appb-000004
Figure PCTCN2016099343-appb-000004

其中,SINR(n,t)表示第n个窄带频点在时刻t的信干噪比,n为正整数。Wherein, SINR(n, t) represents the signal to interference and noise ratio of the nth narrowband frequency point at time t, and n is a positive integer.

步骤S6:对信干噪比进行时域的平均,进一步获得精准的窄带频点的信干噪比:Step S6: Perform time domain averaging on the signal to interference and noise ratio to further obtain a precise signal to interference and noise ratio of the narrowband frequency point:

Figure PCTCN2016099343-appb-000005
Figure PCTCN2016099343-appb-000005

其中,SINR(n,t)为窄带频点n在t时刻的信干噪比估计值,

Figure PCTCN2016099343-appb-000006
是对多个时刻估计值取平均值。Where SINR(n,t) is the estimated value of the signal to interference and noise ratio of the narrowband frequency point n at time t,
Figure PCTCN2016099343-appb-000006
It is an average of the estimated values of multiple moments.

步骤S7:找出信噪比最大的频点位置nm作为窄带最佳工作频点: Step S7: Find the frequency position n m with the largest signal to noise ratio as the narrowband best working frequency point:

Figure PCTCN2016099343-appb-000007
Figure PCTCN2016099343-appb-000007

其中,nm处即为多径叠加后能量最大,频率选择性衰落最小的最佳窄带频点,m为不大于n的正整数。Where n m is the optimal narrow band frequency with the largest energy after multipath superposition and the smallest frequency selective fading, and m is a positive integer not greater than n.

步骤S8:无线基站通过本地控制接口,利用无线控制信道指令携带计算得到的窄带最佳工作频点信息,同时发送至窄带基站无线资源管理单元以及窄带终端资源管理单元。Step S8: The radio base station carries the calculated narrowband optimal working frequency point information by using the local control interface, and transmits the calculated narrowband optimal working frequency point information to the narrowband base station radio resource management unit and the narrowband terminal resource management unit.

步骤S9:由于窄带频点均位于宽带带宽之内,当窄带基站无线资源管理单元以及窄带终端资源管理单元分别收到频点切换指令后,指示窄带射频模块以及窄带终端同步无缝切换工作频率至上述计算得到的最佳窄带频点。此时,为了避免宽窄带的同频干扰,宽带载波调度将避开该频点。Step S9: Since the narrowband frequency points are all located within the broadband bandwidth, when the narrowband base station radio resource management unit and the narrowband terminal resource management unit respectively receive the frequency point switching instruction, the narrowband radio frequency module and the narrowband terminal are synchronized to seamlessly switch the operating frequency to The best narrowband frequency point calculated above. At this time, in order to avoid the co-channel interference of the wide and narrow bands, the wideband carrier scheduling will avoid the frequency.

随着终端移动,信道环境发生变化,最佳工作频点可能会随之发生变化,可设定经过周期TS后重复进行信道检测与切换,实现动态频点切换,以保证窄带能够一直工作在最佳窄带频点,取得最佳传输性能。As the terminal moves, the channel environment changes, and the optimal working frequency may change accordingly. It can be set to repeat channel detection and switching after the period TS to realize dynamic frequency point switching to ensure that the narrowband can work at the most. Good narrow band frequency for optimal transmission performance.

为便于更好的理解本发明实施例提供的技术方案,下面通过一个具体场景下的实施方式为例进行介绍。To facilitate a better understanding of the technical solutions provided by the embodiments of the present invention, the following describes an implementation manner in a specific scenario.

宽窄带融合通信系统中,宽带以带宽20MHz工作频点为350MHz的第四代移动通信系统如宽带OFDMA(Orthogonal Frequency Division Multiplexing,正交频分复用)系统为例,窄带以带宽为12.5kHz的PDT(Public Digital Trunking,公共数字集群)系统为例,设定窄带PDT系统可能工作频点为8路,8路窄带频点分别为346.25/347.50/348.75/350.00/351.25/352.50/353.75/355.50MHz。具体的实施步骤如下:In the wide-narrowband converged communication system, the broadband is a fourth-generation mobile communication system with a bandwidth of 20 MHz and a working frequency of 350 MHz, such as a wideband OFDMA (Orthogonal Frequency Division Multiplexing) system, and the narrowband has a bandwidth of 12.5 kHz. Take the PDT (Public Digital Trunking) system as an example. The possible operating frequency of the narrowband PDT system is 8 channels. The 8 narrowband frequencies are 346.25/347.50/348.75/350.00/351.25/352.50/353.75/355.50MHz. . The specific implementation steps are as follows:

首先,利用宽带基站对宽带终端发送来的时域信号进行频域转换,并提取所有窄带频点(346.25/347.50/348.75/350.00/351.25/352.50/353.75/355.50MHz)在内的、每个窄带频点附近的9个子载波数据,一共有8*9个基带子载波数据,可表示为: First, the wide-band base station is used to perform frequency domain conversion on the time domain signal transmitted by the broadband terminal, and extracts narrowband frequencies (346.25/347.50/348.75/350.00/351.25/352.50/353.75/355.50 MHz) for each narrowband. The 9 subcarrier data near the frequency point, a total of 8 * 9 baseband subcarrier data, can be expressed as:

Figure PCTCN2016099343-appb-000008
Figure PCTCN2016099343-appb-000008

利用已知的导频信息对8*9个基带子载波数据进行信道估计,获得信道频率响应:Channel estimation of 8*9 baseband subcarrier data using known pilot information to obtain channel frequency response:

Figure PCTCN2016099343-appb-000009
Figure PCTCN2016099343-appb-000009

计算信号传输能量、噪声与干扰能量,以及对窄带可能的工作频点附近9个子载波的信干噪比取平均,得到所有可能工作频点的信干噪比信息:Calculate the signal transmission energy, noise and interference energy, and average the signal-to-noise ratio of the nine subcarriers near the possible operating frequency of the narrowband to obtain the signal to interference and noise ratio information of all possible operating frequencies:

SINR(n,t)=[SINR1,t,SINR2,t,SINR3,t,...SINRn,t,...SINR7,t,SINR8,t]T SINR(n,t)=[SINR 1,t ,SINR 2,t ,SINR 3,t ,...SINR n,t ,...SINR 7,t ,SINR 8,t ] T

将不同时间t的多次测量结果取平均作为最终的信干噪比计算结果:The multiple measurements of different time t are averaged as the final signal to interference and noise ratio calculation results:

Figure PCTCN2016099343-appb-000010
Figure PCTCN2016099343-appb-000010

找出信干噪比最高的窄带频点,假设为nm=5,SINR(5)=20dBm,那么对应的频点351.25MHz即为最佳工作频点。无线基站通过本地控制接口和无线控制信道指令将该最佳工作频点信息nm=5同时发送至窄带基站无线资源管理单元以及窄带终端资源管理单元。Find the narrowband frequency point with the highest signal-to-noise ratio, assuming n m =5, SINR(5)=20dBm, then the corresponding frequency point 351.25MHz is the best working frequency point. The wireless base station simultaneously transmits the optimal working frequency point information n m =5 to the narrowband base station radio resource management unit and the narrowband terminal resource management unit through the local control interface and the wireless control channel command.

窄带基站和窄带终端收到指令nm=5后查表获得最佳工作频点351.25MHz,并且同步无缝切换工作频率至最佳频点351.25MHz。此时,为了避免宽窄带的同频干扰,宽带内部载波调度将避开该频点并且预留一定的频带保护。至此实现了一次自适应信道频点切换过程,保证了窄带获得信道的频率分集增益。随着终端移动,信道环境发生变化,最佳工作频点可能会随之变化,可设定经过周期100秒后重复进行信道检测与切换,实现动态切换过程,保证最佳的窄带呼叫性能。After receiving the command n m =5, the narrowband base station and the narrowband terminal obtain the best working frequency point of 351.25MHz, and synchronously switch the operating frequency to the optimal frequency point of 351.25MHz. At this time, in order to avoid co-channel interference of wide and narrow bands, the broadband internal carrier scheduling will avoid the frequency point and reserve a certain band protection. So far, an adaptive channel frequency point switching process is implemented, which ensures that the narrowband obtains the frequency diversity gain of the channel. As the terminal moves, the channel environment changes, and the optimal working frequency may change accordingly. It can be set to repeat the channel detection and switching after 100 seconds, to realize the dynamic switching process and ensure the optimal narrowband call performance.

由上可见,在本发明的一些可行的实施方式中,充分结合了宽窄带融合组 网的互补优势,利用宽带信道的测量信息对窄带若干可能工作频点进行信道参数的测量和估计,计算获得最佳的窄带频点,并且将其上报至窄带基站与窄带终端完成最佳窄带频点的切换,使得窄带能够有效地对抗频率选择性衰落,进一步保证窄带通信的可靠性,提升其覆盖范围。It can be seen from the above that in some feasible embodiments of the present invention, the wide and narrow band fusion group is fully integrated. The complementary advantage of the network, using the measurement information of the wideband channel to measure and estimate the channel parameters of several possible working frequency points in the narrowband, calculate the optimal narrowband frequency point, and report it to the narrowband base station and the narrowband terminal to complete the optimal narrowband frequency. The switching of the points enables the narrowband to effectively resist the frequency selective fading, further ensuring the reliability of the narrowband communication and improving its coverage.

为了更好的实施本发明实施例的上述方案,下面还提供用于配合实施上述方案的相关装置。In order to better implement the above solution of the embodiments of the present invention, related devices for cooperating to implement the above solutions are also provided below.

请参考图7,本发明实施例提供一种频点切换装置,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述装置700可包括:Referring to FIG. 7, an embodiment of the present invention provides a frequency point switching apparatus for a wide-narrowband and converged network communication system, in which a wideband and a narrowband share a continuous frequency point, and the continuous frequency point is The plurality of configured narrowband frequency points are all covered by the broadband; the apparatus 700 can include:

信息获取模块701,用于获取宽带信道测量信息;The information obtaining module 701 is configured to acquire broadband channel measurement information.

算法处理模块702,用于根据所述宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;The algorithm processing module 702 is configured to determine an optimal narrowband frequency point from the plurality of narrowband frequency points according to the wideband channel measurement information;

时序指示模块703,用于指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。The timing indication module 703 is configured to indicate that the narrowband radio frequency module and the narrowband terminal are synchronously switched from the currently operating narrowband frequency point to the optimal narrowband frequency point.

在一些实施例中,所述算法处理模块702可包括:In some embodiments, the algorithm processing module 702 can include:

信道估计子模块7021,用于根据宽带信道测量信息,计算每个窄带频点附近的若干个子载波的信道估计信息;The channel estimation sub-module 7021 is configured to calculate channel estimation information of several subcarriers in the vicinity of each narrowband frequency point according to the wideband channel measurement information;

信道测量子模块7022,用于根据所述信道估计信息计算每个窄带频点的信干噪比,将信干躁比最高的窄带频点确定为最佳窄带频点。The channel measurement sub-module 7022 is configured to calculate a signal to interference and noise ratio of each narrowband frequency point according to the channel estimation information, and determine a narrowband frequency point with the highest signal to the best narrowband frequency point.

在一些实施例中,所述信道估计子模块7021,还包括:In some embodiments, the channel estimation sub-module 7021 further includes:

接收基带信号预处理单元70211,用于对宽带信道接收到的时域信号进行时频域的转换得到频域信号;The receiving baseband signal pre-processing unit 70211 is configured to perform time-frequency domain conversion on the time domain signal received by the wideband channel to obtain a frequency domain signal;

提取子载波数据单元70212,用于从得到的频域信号中提取每个窄带频点附近的若干个子载波的数据;Extracting subcarrier data unit 70212, configured to extract data of several subcarriers in the vicinity of each narrowband frequency point from the obtained frequency domain signal;

所述信道估计单元70213,具体用于利用宽带信道中的导频信息和提取的子载波的数据,计算每个窄带频点附近的若干个子载波的信道估计信息。The channel estimation unit 70213 is specifically configured to calculate channel estimation information of several subcarriers in the vicinity of each narrowband frequency point by using pilot information in the wideband channel and data of the extracted subcarriers.

可见,可以利用宽带信道中已知的发射信号导频信息对接收信号进行处理计算,获得传输信道的基本统计信息,包括信道估计信息,特别是信道频率响 应信息。It can be seen that the received signal can be processed and calculated by using the known transmit signal pilot information in the wideband channel to obtain basic statistical information of the transport channel, including channel estimation information, especially the channel frequency response. Should be information.

在一些实施例中,所述信道测量子模块7022可包括:In some embodiments, the channel measurement sub-module 7022 can include:

噪声功率计算子单元70221,用于利用所述信道估计信息和所述频域信号估计噪声功率;a noise power calculation subunit 70221, configured to estimate noise power by using the channel estimation information and the frequency domain signal;

信号传输功率计算子单元70222,用于利用所述信道估计信息计算每个窄带频点附近的若干个子载波的传输功率;a signal transmission power calculation unit 72022, configured to calculate, by using the channel estimation information, transmission power of several subcarriers near each narrowband frequency point;

信干噪比计算子单元70223,用于根据所述传输功率以及所述噪声功率计算每个窄带频点的信干躁比。The signal to interference and noise ratio calculation subunit 70223 is configured to calculate a signal to interference ratio of each narrowband frequency point according to the transmission power and the noise power.

在一些实施例中,所述信道测量子模块7022还可包括:In some embodiments, the channel measurement sub-module 7022 can further include:

所述信干噪比计算子单元70224,还用于对每个窄带频点的信干躁比进行时域平均处理。The signal to interference and noise ratio calculation subunit 70224 is further configured to perform time domain averaging processing on the signal to interference ratio of each narrowband frequency point.

在一些实施例中,所述时序指示模块703可包括:In some embodiments, the timing indication module 703 can include:

频点切换指令发送子模块7031,用于根据计算得到的最佳窄带频点的信息,同时发送频点切换指令至窄带射频模块与窄带终端,以指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。The frequency point switching instruction sending sub-module 7031 is configured to send the frequency point switching instruction to the narrowband radio frequency module and the narrowband terminal according to the calculated information of the optimal narrowband frequency point, to indicate the narrowband radio frequency module and the narrowband terminal from the currently working narrowband The frequency point is synchronously switched to the optimal narrowband frequency point.

其中,频点切换指令发送子模块7031可通过本地控制接口和无线控制信道指令将计算得到的窄带最佳工作频点信息同时发送至窄带基站无线资源管理单元以及窄带终端资源管理单元。The frequency point switching instruction sending submodule 7031 can simultaneously send the calculated narrowband optimal working frequency point information to the narrowband base station radio resource management unit and the narrowband terminal resource management unit through the local control interface and the radio control channel command.

在一些实施例中,还可包括设置在窄带基站的频点切换执行射频模块7032,用于当收到频点切换指令后,指示窄带基站以及窄带终端同步切换工作频率至上述计算得到的最佳窄带频点。此时,为了避免宽窄带的同频干扰,宽带载波调度将避开该频点。In some embodiments, the frequency point switching execution radio frequency module 7032 disposed at the narrowband base station is configured to, after receiving the frequency point switching instruction, instruct the narrowband base station and the narrowband terminal to synchronously switch the operating frequency to the best calculated result. Narrowband frequency points. At this time, in order to avoid the co-channel interference of the wide and narrow bands, the wideband carrier scheduling will avoid the frequency.

在一些实施例中,装置700还可以包括:频点切换更新周期维护模块704;用于随着终端位置的移动,信道环境将发生变化,最佳窄带频点可能会随之发生变化,频点切换更新周期维护模块704还用于根据实际信道环境计算频点切换更新周期TS,支持重复进行信道检测与频点切换,实现动态频点切换,以保证窄带能够一直工作在最优窄带频点,获得最佳传输性能。In some embodiments, the apparatus 700 may further include: a frequency point switching update period maintenance module 704; for the movement of the terminal position, the channel environment will change, and the optimal narrowband frequency point may change accordingly, the frequency point The handover update period maintenance module 704 is further configured to calculate a frequency point handover update period TS according to the actual channel environment, support repeated channel detection and frequency point switching, and implement dynamic frequency point switching to ensure that the narrowband can always work at the optimal narrowband frequency point. Get the best transmission performance.

可以理解,本发明实施例的频点切换装置的各个功能模块的功能可根据上 述方法实施例中的方法具体实现,其具体实现过程可参照上述方法实施例中的相关描述,此处不再赘述。It can be understood that the functions of the various functional modules of the frequency point switching device according to the embodiment of the present invention may be based on The method in the method embodiment is specifically implemented. For the specific implementation process, reference may be made to the related description in the foregoing method embodiments, and details are not described herein again.

由上可见,在本发明的一些可行的实施方式中,针对现有宽窄带组网的频点相对固定,无法解决窄带处于深衰落的问题,提出了一种宽窄带融合组网下的窄带自适应频点切换技术方案。该方案中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;无线基站可以根据宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点,实现了对窄带频点进行灵活调度分配。该技术方案使得窄带能够有效地避开深衰落的频点范围,以获得窄带信道的频率分集增益,大大提高了窄带通信性能,进一步保证了窄带通信的可靠性,提升了覆盖范围。It can be seen from the above that in some feasible implementation manners of the present invention, the frequency of the existing wide and narrowband networking is relatively fixed, and the problem that the narrowband is in deep fading cannot be solved, and a narrowband self-band under the wide-narrowband fusion networking is proposed. Adapt to the frequency point switching technology solution. In the solution, the broadband and the narrowband share a continuous frequency point, and the plurality of narrowband frequency points configured in the continuous frequency point are covered by the broadband; the wireless base station may use the broadband channel measurement information from the plurality of narrowband frequency points. Determining an optimal narrowband frequency point; indicating that the narrowband radio frequency module and the narrowband terminal are synchronously switched from the currently operating narrowband frequency point to the optimal narrowband frequency point, thereby implementing flexible scheduling allocation for the narrowband frequency point. The technical solution enables the narrowband to effectively avoid the frequency range of the deep fading, thereby obtaining the frequency diversity gain of the narrowband channel, greatly improving the performance of the narrowband communication, further ensuring the reliability of the narrowband communication, and improving the coverage.

请参考图8,本发明实施例还提供一种无线基站80;该无线基站80可用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;Referring to FIG. 8, an embodiment of the present invention further provides a radio base station 80. The radio base station 80 can be used in a wide-narrowband converged networking communication system. In the communication system, a wideband and a narrowband share a continuous frequency point, and the continuous sequence is continuous. Multiple narrowband frequency points configured in the frequency point are covered by the broadband;

所述无线基站80包括处理器801和存储器802以及射频电路803,所述射频电路803可包括宽带射频模块和窄带射频模块;所述存储器802用于存储程序805,所述处理器801与所述存储器8002通过总线804连接,当所述无线基站80运行时,所述处理器801执行所述存储器802存储的所述程序805,以使所述无线基站80执行如上文方法实施例所述的频点切换方法。The wireless base station 80 includes a processor 801 and a memory 802, and a radio frequency circuit 803. The radio frequency circuit 803 can include a broadband radio frequency module and a narrowband radio frequency module. The memory 802 is configured to store a program 805, the processor 801 and the The memory 8002 is connected by a bus 804, and when the wireless base station 80 is in operation, the processor 801 executes the program 805 stored by the memory 802 to cause the wireless base station 80 to perform the frequency as described in the above method embodiment. Point switching method.

由上可见,在本发明的一些可行的实施方式中,无线基站可以执行上述方法实施例公开的频点切换方法,并取得上述方法实施例所取得的技术效果。It can be seen that, in some possible implementation manners of the present invention, the radio base station can perform the frequency point switching method disclosed in the foregoing method embodiment, and obtain the technical effects obtained by the foregoing method embodiments.

本发明实施例还提供一种存储一个或多个程序的计算机可读存储介质,所述一个或多个程序包括指令,所述指令当被包括一个或多个处理器的无线基站执行时使所述无线基站执行如上文方法实施例所述的频点切换方法。Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a wireless base station including one or more processors The radio base station performs the frequency point handover method as described in the above method embodiment.

在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详细描述的部分,可以参见其它实施例的相关描述。In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment can be referred to the related description of other embodiments.

需要说明的是,对于前述的各方法实施例,为了简单描述,故将其都表述 为一系列的动作组合,但是本领域技术人员应该知悉,本发明并不受所描述动作顺序的限制,因为依据本发明,某些步骤可以采用其它顺序或者同时进行。其次,本领域技术人员也应该知悉,说明书中所描述的实施例均属于优选实施例,所涉及的动作和模块并不一定是本发明所必须的。It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed. The present invention is not limited by the order of the actions described, as some steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

需要说明的是,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。It should be noted that the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

以上对本发明实施例所提供的频点切换方法和装置以及无线基站进行了详细介绍,本文中应用了具体几个实施例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。 The frequency point switching method and apparatus and the wireless base station provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the present invention are described in the following embodiments. The description of the above embodiments is only used for To help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in specific embodiments and application scopes. It should not be construed as limiting the invention.

Claims (14)

  1. 一种频点切换方法,其特征在于,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述方法包括:A frequency point switching method is characterized in that it is used in a wide-narrowband fusion networking communication system, in which a wideband and a narrowband share a continuous frequency point, and a plurality of narrowband frequencies configured in the continuous frequency point Points are covered by broadband; the methods include:
    无线基站获取宽带信道测量信息;The wireless base station acquires broadband channel measurement information;
    所述无线基站根据所述宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;Determining, by the radio base station, an optimal narrowband frequency point from the plurality of narrowband frequency points according to the wideband channel measurement information;
    所述无线基站指示窄带射频模块与窄带终端,从当前工作的窄带频点同步切换至所述最佳窄带频点。The wireless base station instructs the narrowband radio frequency module and the narrowband terminal to synchronously switch from the currently operating narrowband frequency point to the optimal narrowband frequency point.
  2. 根据权利要求1所述的方法,其特征在于,所述无线基站根据所述宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点包括:The method according to claim 1, wherein the determining, by the radio base station, the best narrowband frequency points from the plurality of narrowband frequency points according to the wideband channel measurement information comprises:
    所述无线基站根据宽带信道测量信息,计算每个窄带频点附近的若干个子载波的信道估计信息;The radio base station calculates channel estimation information of several subcarriers in the vicinity of each narrowband frequency point according to the wideband channel measurement information;
    所述无线基站根据所述信道估计信息计算每个窄带频点的信干噪比,将信干噪比最高的窄带频点确定为最佳窄带频点。The radio base station calculates a signal to interference and noise ratio of each narrowband frequency point according to the channel estimation information, and determines a narrowband frequency point with the highest signal to interference and noise ratio as the optimal narrowband frequency point.
  3. 根据权利要求2所述的方法,其特征在于,所述无线基站根据宽带信道测量信息,计算每个窄带频点附近的若干个子载波的信道估计信息包括:The method according to claim 2, wherein the radio base station calculates channel estimation information of several subcarriers in the vicinity of each narrowband frequency point according to the wideband channel measurement information, including:
    所述无线基站对宽带信道接收到的时域信号进行时频域的转换得到频域信号;The radio base station performs time-frequency domain conversion on the time domain signal received by the wideband channel to obtain a frequency domain signal;
    所述无线基站从得到的频域信号中提取每个窄带频点附近的若干个子载波的数据;The radio base station extracts data of several subcarriers in the vicinity of each narrowband frequency point from the obtained frequency domain signal;
    所述无线基站利用宽带信道中的导频信息和提取的子载波的数据,计算每个窄带频点附近的若干个子载波的信道估计信息。The radio base station calculates channel estimation information of several subcarriers near each narrowband frequency point by using pilot information in the wideband channel and data of the extracted subcarriers.
  4. 根据权利要2所述的方法,其特征在于,所述无线基站根据所述信道估计信息计算每个窄带频点的信干噪比包括:The method according to claim 2, wherein the calculating, by the radio base station, the signal to interference and noise ratio of each narrowband frequency point according to the channel estimation information comprises:
    所述无线基站利用所述信道估计信息和所述频域信号估计噪声功率;The wireless base station estimates noise power by using the channel estimation information and the frequency domain signal;
    所述无线基站利用所述信道估计信息计算每个窄带频点附近的若干个子载波的传输功率; The radio base station calculates, by using the channel estimation information, transmission power of several subcarriers in the vicinity of each narrowband frequency point;
    所述无线基站根据所述传输功率以及所述噪声功率计算每个窄带频点的信干躁比。The wireless base station calculates a signal to interference ratio of each narrowband frequency point according to the transmission power and the noise power.
  5. 根据权利要求4所述的方法,其特征在于,还包括:The method of claim 4, further comprising:
    所述无线基站对每个窄带频点的信干躁比进行时域平均处理。The radio base station performs time domain averaging processing on the signal to interference ratio of each narrowband frequency point.
  6. 根据权利要求1至5中任一所述的方法,其特征在于,所述无线基站指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点包括:The method according to any one of claims 1 to 5, wherein the wireless base station instructing the narrowband radio frequency module to switch synchronously from the currently operating narrowband frequency point to the optimal narrowband frequency point comprises:
    所述无线基站根据计算得到的最佳窄带频点的信息,同时发送频点切换指令至窄带射频模块与窄带终端,以指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。The radio base station simultaneously transmits the frequency point switching command to the narrowband radio frequency module and the narrowband terminal according to the calculated information of the optimal narrowband frequency point, to indicate that the narrowband radio frequency module and the narrowband terminal synchronously switch from the currently working narrowband frequency point to the The best narrowband frequency point.
  7. 一种频点切换装置,其特征在于,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述装置包括:A frequency point switching device is characterized in that it is used in a wide-narrowband fusion networking communication system, in which a wideband and a narrowband share a continuous frequency point, and a plurality of narrowband frequencies configured in the continuous frequency point Points are covered by broadband; the device includes:
    信息获取模块,用于获取宽带信道测量信息;An information acquiring module, configured to acquire broadband channel measurement information;
    算法处理模块,用于根据所述宽带信道测量信息从所述多个窄带频点中确定最佳窄带频点;An algorithm processing module, configured to determine an optimal narrowband frequency point from the plurality of narrowband frequency points according to the wideband channel measurement information;
    时序指示模块,用于指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。The timing indication module is configured to indicate that the narrowband radio frequency module and the narrowband terminal synchronously switch from the currently operating narrowband frequency point to the optimal narrowband frequency point.
  8. 根据权利要求7所述的装置,其特征在于,所述算法处理模块包括:The apparatus according to claim 7, wherein the algorithm processing module comprises:
    信道估计子模块,用于根据宽带信道测量信息,计算每个窄带频点附近的若干个子载波的信道估计信息;a channel estimation submodule, configured to calculate channel estimation information of several subcarriers in the vicinity of each narrowband frequency point according to the wideband channel measurement information;
    信道测量子模块,用于根据所述信道估计信息计算每个窄带频点的信干噪比,将信干躁比最高的窄带频点确定为最佳窄带频点。The channel measurement submodule is configured to calculate a signal to interference and noise ratio of each narrowband frequency point according to the channel estimation information, and determine a narrowband frequency point with the highest signal to the best narrowband frequency point.
  9. 根据权利要求8所述的装置,其特征在于,所述信道估计子模块包括:The apparatus according to claim 8, wherein the channel estimation submodule comprises:
    接收基带信号预处理单元,用于对宽带信道接收到的时域信号进行时频域的转换得到频域信号;a receiving baseband signal pre-processing unit, configured to perform time-frequency domain conversion on the time domain signal received by the wideband channel to obtain a frequency domain signal;
    提取子载波数据单元,用于从得到的频域信号中提取每个窄带频点附近的若干个子载波的数据; Extracting a subcarrier data unit, configured to extract data of several subcarriers in the vicinity of each narrowband frequency point from the obtained frequency domain signal;
    所述信道估计子模块,具体用于利用宽带信道中的导频信息和提取的子载波的数据,计算每个窄带频点附近的若干个子载波的信道估计信息。The channel estimation sub-module is specifically configured to calculate channel estimation information of several sub-carriers in the vicinity of each narrow-band frequency point by using pilot information in the wideband channel and data of the extracted sub-carriers.
  10. 根据权利要求8所述的装置,其特征在于,所述信道测量子模块包括:The apparatus according to claim 8, wherein the channel measurement sub-module comprises:
    噪声功率计算子单元,用于利用所述信道估计信息和所述频域信号估计噪声功率;a noise power calculation subunit, configured to estimate noise power by using the channel estimation information and the frequency domain signal;
    信号传输功率计算子单元,用于利用所述信道估计信息计算每个窄带频点附近的若干个子载波的传输功率;a signal transmission power calculation subunit, configured to calculate, by using the channel estimation information, transmission power of several subcarriers near each narrowband frequency point;
    信干噪比计算子单元,用于根据所述传输功率以及所述噪声功率计算每个窄带频点的信干躁比。And a signal to interference and noise ratio calculation subunit, configured to calculate a signal to interference ratio of each narrowband frequency point according to the transmission power and the noise power.
  11. 根据权利要求10所述的装置,其特征在于,The device of claim 10 wherein:
    所述信干噪比计算子单元,还用于对每个窄带频点的信干躁比进行时域平均处理。The signal to interference and noise ratio calculation subunit is further configured to perform time domain averaging processing on the signal to interference ratio of each narrowband frequency point.
  12. 根据权利要求7至11中任一所述的装置,其特征在于,所述时序指示模块包括:The apparatus according to any one of claims 7 to 11, wherein the timing indication module comprises:
    频点切换指令发送子模块,用于根据计算得到的最佳窄带频点的信息,同时发送频点切换指令至窄带射频模块与窄带终端,以指示窄带射频模块与窄带终端从当前工作的窄带频点同步切换至所述最佳窄带频点。The frequency point switching instruction sending submodule is configured to send the frequency point switching instruction to the narrowband radio frequency module and the narrowband terminal according to the calculated information of the optimal narrowband frequency point, to indicate the narrowband frequency of the narrowband radio frequency module and the narrowband terminal from the current working Point synchronization switches to the optimal narrowband frequency point.
  13. 一种无线基站,其特征在于,用于宽窄带融合组网通信系统,所述通信系统中宽带和窄带共用一段连续的频点,所述一段连续的频点中配置的多个窄带频点均被宽带覆盖;所述无线基站包括处理器和存储器以及射频电路,所述射频电路包括宽带射频模块和窄带射频模块;所述存储器用于存储程序,所述处理器与所述存储器通过总线连接,当所述无线基站运行时,所述处理器执行所述存储器存储的所述程序,以使所述无线基站执行如权利要求1-6中任一项所述的频点切换方法。A radio base station, characterized in that it is used in a wide-narrowband converged networking communication system, in which a wideband and a narrowband share a continuous frequency point, and a plurality of narrowband frequency points configured in the continuous frequency point are Covered by a broadband; the wireless base station includes a processor and a memory, and a radio frequency circuit, the radio frequency circuit includes a broadband radio frequency module and a narrowband radio frequency module; the memory is used to store a program, and the processor is connected to the memory through a bus. The processor executes the program stored in the memory to cause the wireless base station to perform the frequency point switching method according to any one of claims 1-6 when the wireless base station is in operation.
  14. 一种存储一个或多个程序的计算机可读存储介质,所述一个或多个程序包括指令,所述指令当被包括一个或多个处理器的无线基站执行时使所述无线基站执行如权利要求1-6中任一项所述的频点切换方法。 A computer readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a wireless base station comprising one or more processors, cause the wireless base station to perform as claimed The frequency point switching method according to any one of claims 1 to 6.
PCT/CN2016/099343 2016-09-19 2016-09-19 Frequency point switching method and apparatus, and wireless base station WO2018049683A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101409577A (en) * 2007-10-10 2009-04-15 北京信威通信技术股份有限公司 Intelligent antenna wireless system based on code-spreading OFDMA (CS-OFDMA)
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