A method and apparatus for improving the transmission performance of dual-band RRUs

Abstract

This disclosure relates to a method and apparatus for improving the transmission performance of a dual-band RRU. The method is executed in a dual-band RRU device that converts dual-band baseband signals to radio frequency signals. The dual-band RRU device has at least a dual-band interface unit and a dual-band power amplifier on a transmit link that serves as an uplink signal processing link. The method includes: a compensation value acquisition step, which acquires, based on the frequency band and bandwidth information of the dual-band signals to be processed received from the dual-band interface unit, compensation values ​​corresponding to the dual-band signals in their respective frequency bands and bandwidths, in a manner that equalizes the power spectral density of the dual-band radio frequency signals output from the dual-band power amplifier, for the gain characteristics of the dual-band power amplifier; and a dual-band gain compensation step, which compensates the gain characteristics in the frequency band and bandwidth of the dual-band signals based on the compensation values, and outputs the compensated gain characteristics to the dual-band power amplifier.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communications. More specifically, this disclosure relates to methods and apparatus for improving the transmission performance of a dual-band RRU (Remote Radio Unit). Background Technology

[0002] In recent years, with the rapid development of communication technology, fifth-generation mobile communication (5G) technology, the latest generation of cellular mobile communication technology, has become widely adopted and is further evolving towards 5G+ (5G and above). The radio spectrum used for mobile communication network coverage, as a non-renewable resource, has been gradually allocated to major telecommunications operators. With the continuous upgrading of communication standards and networks, in order to improve communication efficiency and provide users with greater communication capacity and coverage, the industry has introduced "spectrum refarming" technology to ensure the sustainable use of frequencies. This involves clearing the spectrum occupied by older mobile networks (such as 2G and 3G networks) and reallocating the original radio spectrum resources to newer mobile networks (such as 5G / 5G+ networks). At the same time, in order to reduce network investment, construction, and maintenance costs and improve network operation efficiency, network co-construction and sharing have been widely carried out among different telecommunications operators.

[0003] In the current 5G and 5G+ mobile communication fields, the allocated operating frequency bands and bandwidths vary among multiple different communication operators co-building and sharing networks. According to international standards such as 3GPP protocols, as well as industry and enterprise standards, equipment used for 5G spectrum refarming must meet various requirements regarding coexistence of different operating frequency bands and spurious emissions and congestion in co-site scenarios. This often leads to severe deterioration of insertion loss in edge bands, such as the edge 1-2MHz, potentially reducing it by as much as 8-10dB, failing to maintain adequate coverage and ensure a good user experience. Therefore, to ensure gain characteristics, a suitable power amplifier is needed. For example, in the NR RRU equipment of two operators co-building and sharing networks, even if their operating frequency bands are adjacent, their individual frequency bands and bandwidths are inconsistent. If only one power amplifier (single power amplifier mode) is used, the gain characteristics of that power amplifier cannot simultaneously meet the frequency band and bandwidth requirements of both adjacent dual-band systems. On the other hand, while using two independent power amplifiers for dual-band (dual-amplifier mode) is relatively easy to implement, it leads to a significant increase in the power consumption, size, weight, and cost of the dual-band NR RRU equipment, resulting in a decrease in overall system performance. Therefore, especially in scenarios involving network co-construction and sharing among multiple operators, the industry urgently needs feasible solutions to improve the transmission performance of dual-band RRUs. Summary of the Invention

[0004] To address the aforementioned problems with dual-band NR RRU devices, researchers in this field have conducted in-depth research and development, providing devices and methods for improving the transmission performance of dual-band RRUs.

[0005] A brief overview of this disclosure is given below to provide a basic understanding of some aspects of it. However, it should be understood that this overview is not an exhaustive summary of this disclosure. It is not intended to identify key or essential parts of this disclosure, nor is it intended to limit the scope of this disclosure. Its purpose is merely to present certain concepts of this disclosure in a simplified form as a prelude to the more detailed description that follows.

[0006] According to one aspect of this disclosure, an apparatus for improving the transmit performance of a dual-band RRU is provided. The apparatus is used in an RRU device that converts dual-band baseband signals to radio frequency signals. The RRU device includes at least a dual-band interface unit and a dual-band power amplifier on a transmit link serving as an uplink signal processing link. The apparatus may include: a dual-band controller connected to the dual-band interface unit, receiving frequency band and bandwidth information of the dual bands to be processed, and obtaining compensation values ​​corresponding to the power spectral density of the dual-band radio frequency signals output from the dual-band power amplifier, respectively, within their respective frequency bands and bandwidths, for the gain characteristics of the dual-band power amplifier; and a dual-band gain compensator connected to the dual-band power amplifier, compensating the gain characteristics within the frequency bands and bandwidths of the dual bands according to the compensation values ​​from the dual-band controller, and outputting the compensated gain characteristics to the dual-band power amplifier.

[0007] According to another aspect of this disclosure, a method for improving the transmission performance of a dual-band RRU is provided. This method is executed in a dual-band RRU device that converts dual-band baseband signals to radio frequency signals. The dual-band RRU device includes at least a dual-band interface unit and a dual-band power amplifier on a transmit link serving as an uplink signal processing link. The method may include: a compensation value acquisition step, which, based on frequency band and bandwidth information of the dual-band signals to be processed received from the dual-band interface unit, acquires compensation values ​​corresponding to the dual-band signals in their respective frequency bands and bandwidths, for the gain characteristics of the dual-band power amplifier, in a manner that equalizes the power spectral density of the dual-band radio frequency signals output from the dual-band power amplifier; and a dual-band gain compensation step, which, based on the compensation values, compensates the gain characteristics within the frequency band and bandwidth of the dual-band signals, and outputs the compensated gain characteristics to the dual-band power amplifier.

[0008] According to another aspect of this disclosure, an apparatus for improving the transmission performance of a dual-band RRU is provided. The apparatus may include: a memory storing instructions thereon; and a processor configured to execute the instructions stored in the memory to perform the method for improving the transmission performance of a dual-band RRU according to another aspect of this disclosure.

[0009] According to another aspect of this disclosure, a computer-readable storage medium is provided. This computer-readable storage medium may include computer-executable instructions, which, when executed by one or more processors, cause the one or more processors to perform the method described above for improving the transmission performance of a dual-band RRU according to another aspect of this disclosure.

[0010] According to another aspect of this disclosure, a computer program product is provided. This computer program product may include a computer program / instructions that, when executed by a processor, implement the steps of the method for improving the transmission performance of a dual-band RRU according to another aspect of this disclosure.

[0011] According to the technical solution disclosed herein, the performance of dual-band NR RRU equipment can be effectively improved by acquiring and compensating for the inherent gain characteristics of a broadband power amplifier covering adjacent dual-band frequencies, thereby reducing the construction, operation, maintenance, and optimization and upgrade costs of 5G / 5G+ network equipment. By promoting the implementation and promotion of dual-band NR RRU equipment, the overall adaptability, flexibility, and resource utilization of the system are improved, which is conducive to enabling 5G / 5G+ networks to play a greater role and better enhance the user experience. Attached Figure Description

[0012] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0013] This disclosure will be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0014] Figure 1 This is an exemplary schematic diagram illustrating a dual-frequency RRU device 100 according to the prior art;

[0015] Figure 2 This is an exemplary overall structural diagram illustrating an apparatus 200 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure;

[0016] Figure 3 This is an exemplary overall flowchart illustrating a method 300 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure;

[0017] Figure 4This is an exemplary overall structural diagram showing a dual-frequency RRU device 400 according to Embodiment 1 of this disclosure;

[0018] Figure 5 This is an exemplary flowchart illustrating the specific execution process of a method 300 for improving the transmission performance of a dual-band RRU according to Embodiment 1 of this disclosure;

[0019] Figure 6 This is an exemplary overall structural diagram showing a dual-frequency RRU device 600 according to Embodiment 2 of this disclosure;

[0020] Figure 7 An exemplary block diagram of an apparatus 700 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure is shown;

[0021] Figure 8 An exemplary configuration diagram of a computing device 800 is shown, which can implement a method 300 for improving the transmission performance of a dual-band RRU according to embodiments of the present disclosure. Detailed Implementation

[0022] Preferred embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure. Furthermore, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. The following description of at least one exemplary embodiment is merely illustrative and is not intended to limit the scope of the present disclosure or its application or use.

[0023] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. The techniques disclosed herein can be applied to a wide variety of products.

[0024] For ease of understanding and explanation, the methods and apparatus for improving the transmission performance of dual-band RRUs according to embodiments of this disclosure are mainly described using the current 5G network architecture in the telecommunications industry as an example, with multiple operators operating in two different configurations. However, this is not limiting. The technical principles of this disclosure can be applied not only to any general network architecture, such as any existing network architecture, but also to the network architecture of future communication systems; and of course, it can also be applied to any suitable scenario involving two or more operators.

[0025] The following is a reference, firstly Figure 1 An example of a dual-frequency RRU device based on existing technology will be described. For example... Figure 1As shown, the dual-band RRU device 100 is used to convert dual-band baseband signals and radio frequency signals. The dual-band interface unit IU 110 serves as the interface between the baseband module and the radio frequency module, and can be connected to two single-band BBU (Baseband Unit) devices (not shown), or to a dual-band combined BBU device. The dual-band RRU device 100 communicates with the BBU device through the dual-band interface unit IU 110 to perform the baseband signal and radio frequency signal conversion. The dual-band RRU device here can be, for example, a dual-band RRU device consisting of 800MHz and 900MHz frequency bands, or a dual-band RRU device consisting of 1.8GHz and 2.1GHz frequency bands, but is not limited to these; it can also be a dual-band RRU device including any other frequency band.

[0026] In the exemplary dual-band RRU device 100, on the transmit link, which serves as the uplink signal processing link, the baseband signal from the BBU device is input to the dual-band digital intermediate frequency unit (DIF) 120 via the dual-band interface unit (IU) 110, then passes through the dual-band transceiver (TRX) 130 and enters the dual-band transmit bandpass filter (TBPF) 140. The filtered RF signal is then amplified by the dual-band power amplifier (PA) 150 and transmitted by the dual-band transmit antenna (TA) 160. As mentioned above, the existing technology uses either a single wideband power amplifier (single power amplifier mode) whose operating frequency band covers both dual-band frequencies as the dual-band power amplifier (PA) 150, or two independent power amplifiers for the dual frequencies (dual power amplifier mode). On the other hand, in the receiving link, which serves as the downlink signal processing link, the radio frequency signal enters the dual-band RRU device 100 via the dual-band receiving antenna RA 190, and then sequentially passes through the dual-band low-noise amplifier LNA 180, the dual-band receiving bandpass filter RBPF 170, the dual-band transceiver TRX 130, the dual-band digital intermediate frequency unit DIF 120, and the dual-band interface unit IU 110, where it is converted into the corresponding baseband signal and output to the BBU device. In the following description, unless otherwise stated, common structures or steps that are the same as or corresponding to those already described are appended and the same reference numerals are used, omitting repeated descriptions.

[0027] As mentioned earlier, in the transmit link of the dual-band RRU device 100, if the dual-band power amplifier PA 150 is used in single-amplifier mode, it often cannot simultaneously meet the gain characteristics requirements of the frequency bands and bandwidths of the two adjacent dual bands. If a dual-amplifier mode is used, it will lead to a significant increase in the power consumption, size, weight, and cost of the device. In response to this, the inventors of this disclosure have proposed an apparatus and method for improving the transmit performance of a dual-band RRU. Hereinafter, the overall structure of the apparatus for improving the transmit performance of a dual-band RRU according to an embodiment of this disclosure will be described.

[0028] Figure 2 An exemplary overall structural diagram of an apparatus 200 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure is shown. Preferably, the apparatus 200 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure is used in the aforementioned dual-band RRU device for converting dual-band baseband signals and radio frequency signals. The apparatus 200 may include: a dual-band controller C210, connected to a dual-band interface unit IU 110, receiving frequency band and bandwidth information of the dual bands as the processing target, and obtaining compensation values ​​corresponding to the dual bands in their respective frequency bands and bandwidths in a manner that equalizes the power spectral density of the dual-band radio frequency signals output from the dual-band power amplifier PA 150; and a dual-band gain compensator GC 220, connected to the dual-band power amplifier PA 150, compensating the gain characteristics of the dual bands in their respective frequency bands and bandwidths according to the compensation values ​​from the dual-band controller C210, and outputting the compensated gain characteristics to the dual-band power amplifier PA 150.

[0029] Accordingly, Figure 3 An exemplary overall flowchart of a method 300 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure is shown. Preferably, the method 300 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure is executed in the aforementioned dual-band RRU device that converts baseband signals and radio frequency signals of dual bands. The method 300 may include: a compensation value acquisition step S310, which acquires, based on the frequency band and bandwidth information of the dual bands to be processed received from the dual-band interface unit IU 110, in a manner that equalizes the power spectral density of the dual-band radio frequency signals output from the dual-band power amplifier PA 150, compensation values ​​corresponding to the dual bands and within their respective frequency bands and bandwidths for the gain characteristics of the dual-band power amplifier PA 150; and a dual-band gain compensation step S320, which compensates the gain characteristics within the frequency band and bandwidth of the dual bands according to the compensation values, and outputs the compensated gain characteristics to the dual-band power amplifier PA 150.

[0030] The apparatus 200 and / or method 300 for improving the transmission performance of a dual-band RRU according to embodiments of this disclosure, based on the inherent gain characteristics of a single wideband power amplifier PA 150 whose operating frequency band covers both frequency bands, obtains the gain characteristics of the dual-band power amplifier within the dual frequency bands for each of the different operating frequency bands and bandwidths of the two frequencies. According to the principle of dual-band power spectral density equivalence, different gain characteristic compensation values ​​are used to compensate for the dual-band gain characteristics of the power amplifier within the dual frequency bands and bandwidths, so that the power spectral density of the dual-band radio frequency signals output from the dual-band power amplifier reaches equilibrium in their respective frequency bands and bandwidths. Therefore, compared with the prior art, it achieves essentially the same coverage range under dual-band conditions without increasing the power consumption, size, weight, and cost of the dual-band RRU device, effectively improving the performance and user experience of the RRU device, increasing wireless frequency utilization efficiency, and helping to effectively reduce network construction, operation, maintenance, and optimization costs and improve operation and maintenance efficiency.

[0031] The solution for improving the transmission performance of dual-band RRUs according to embodiments of this disclosure can be directly applied to scenarios such as 800MHz NR refarming, and is particularly suitable for applications such as 800MHz and 900MHz NR spread spectrum refarming and low-frequency co-construction and sharing. In this case, practical verification has shown that good gain compensation is achieved in both the 800MHz and 900MHz dual-band RF signals. Only a single wideband power amplifier is needed, whose gain characteristics can simultaneously meet the frequency band and bandwidth requirements of adjacent dual bands, offering advantages such as saving power consumption, size, weight, and cost. This improves the transmission performance of dual-band RRUs, enhances the spectral efficiency and user experience of adjacent dual-band NR RRUs, reduces site construction costs, ensures system diversity, adaptability, flexibility, and resource utilization, and facilitates the implementation of dual-band NR RRU equipment.

[0032] For ease of understanding, the apparatus 200 and method 300 for improving the transmission performance of a dual-band RRU according to embodiments of the present disclosure will be described in detail below through several specific embodiments.

[0033] Example 1

[0034] Figure 4 This is an exemplary overall structural diagram illustrating a dual-frequency RRU device 400 according to Embodiment 1 of this disclosure. The following is based on... Figure 1 The differences between this and the existing dual-frequency RRU device 100 will be explained primarily. Furthermore, in order to... Figure 2 Distinguish between the expressions, Figure 4 The dual-frequency controller in the designation is labeled C 211, as... Figure 2 A specific example of the dual-frequency controller C 210 in the example; Figure 4 The dual-frequency gain compensator in the design is labeled GC 221, as... Figure 2A specific example of the dual-frequency gain compensator GC 220.

[0035] More specifically, with Figure 1 In comparison, the newly added components, besides the dual-band controller C 211 and the dual-band gain compensator GC221, include the dual-band signal generator SG 230, the dual-band gain detector GD 240, and the switching switch SW_GD. For ease of understanding, the original components, except for the antenna, are shown with dashed lines, while the added components are shown with solid lines.

[0036] Preferably, the dual-frequency signal generator SG 230 generates a dual-frequency radio frequency signal that meets the corresponding frequency band and bandwidth requirements based on the frequency band and bandwidth information output by the dual-frequency controller C 211, and outputs it to the dual-frequency power amplifier PA150 and the dual-frequency gain detector GD 240. The dual-frequency gain detector GD 240 receives the dual-frequency radio frequency signal from the dual-frequency signal generator SG 230 and the output of the dual-frequency power amplifier PA150 for the dual-frequency radio frequency signal, in order to detect the instantaneous gain characteristics of the dual-frequency power amplifier PA150 within the respective frequency bands of the dual frequencies. The dual-frequency controller C 211 calculates the respective compensation values ​​based on the instantaneous gain characteristics from the dual-frequency gain detector GD 240 and the frequency band and bandwidth information of the dual frequencies.

[0037] Preferably, the switching switch SW_GD switches between the dual-frequency normal operation mode and the dual-frequency gain detection mode. More specifically, the dual-frequency controller C 211 compares the newly received frequency band and bandwidth information of the dual frequencies with the previously stored frequency band and bandwidth information of the dual frequencies. If the comparison result shows no change, the dual-frequency controller C 211 instructs the switching switch SW_GD to switch to the dual-frequency normal operation mode, turning off the dual-frequency signal generator SG 230 and the dual-frequency gain detector GD 240. If the comparison result shows a change, the dual-frequency controller C 211 instructs the switching switch SW_GD to switch to the dual-frequency gain detection mode, activating the dual-frequency signal generator SG 230 and the dual-frequency gain detector GD 240.

[0038] On the other hand, correspondingly, in the method 300 for improving the transmission performance of a dual-band RRU according to Embodiment 1 of this disclosure, it is preferable that, in the compensation value acquisition step S310, a dual-band radio frequency signal that meets the corresponding frequency band and bandwidth requirements is generated based on the frequency band and bandwidth information of the dual-band signal, and then, based on the dual-band radio frequency signal and the output of the dual-band power amplifier PA 150 for the dual-band radio frequency signal, the instantaneous gain characteristics of the dual-band power amplifier PA 150 in the frequency band of the dual-band signal are detected, and then, based on the instantaneous gain characteristics and the frequency band and bandwidth information of the dual-band signal, the respective compensation values ​​are calculated.

[0039] Furthermore, preferably, the method 300 for improving the transmission performance of a dual-band RRU according to Embodiment 1 of this disclosure may further include a switching step S330, which compares the newly received frequency band and bandwidth information of the dual band with the previously stored frequency band and bandwidth information of the dual band, and switches between a dual-band normal operation mode and a dual-band gain detection mode based on the comparison result; wherein, if the comparison result is unchanged, the method switches to the dual-band normal operation mode, so that in the dual-band gain compensation step S320, the method continues to operate based on the various compensation values ​​previously obtained in the compensation value acquisition step S310; if the comparison result is changed, the method switches to the dual-band gain detection mode, and the compensation value acquisition step S310 and the dual-band gain compensation step S320 are repeated based on the newly received frequency band and bandwidth information of the dual band.

[0040] Next, regarding the dual-frequency RRU device 400 according to Embodiment 1 of this application, refer to Figure 4 Furthermore, the structure and function of each module will be explained in conjunction with the newly added or modified signals.

[0041] The dual-band signal generator SG 230 is configured to generate adjacent dual-band signals. Its input SGin is connected to output 1, Cout1, of the dual-band controller C 211. Based on the frequency band and bandwidth information output by the dual-band controller C 211, it generates dual-band radio frequency signals that meet the corresponding frequency band and bandwidth requirements. Its output SGout is divided into two paths: one path is connected to the first input terminal 1 of the switching switch SW_GD, and the other path is connected to the input terminal 1, GDin1, of the dual-band gain detector GD 240, serving as the signal source for the dual-band power amplifier PA 150 and the dual-band gain detector GD 240.

[0042] When the dual-band controller C 211 controls the switching switch SW_GD to switch from endpoint 2 to endpoint 1, and the dual-band controller C 211 controls the dual-band signal generator SG 230 to output a dual-band RF signal, the function of the dual-band gain detector GD 240 is activated. Input signal 1 (GDin1) of the dual-band gain detector GD 240 is connected to the output terminal SGout of the dual-band signal generator SG 230, which is also the input terminal of the dual-band power amplifier PA 150. Input signal 2 (GDin2) is connected to the output terminal of the dual-band power amplifier PA 150. This allows the detection of the instantaneous gain characteristics of the dual-band power amplifier PA 150 within the dual-band frequency band, and the instantaneous gain characteristics within the dual-band frequency band are input to input signal 2 (Cin2) of the dual-band controller C 211 through the output signal GDout.

[0043] The dual-band controller C211 is configured to connect its input signal 1, Cin1, to the output signal IUout of the dual-band interface unit IU 110. It receives dual-band frequency band and bandwidth information from two single-band BBU devices or a dual-band combined BBU device, and compares it with previously stored dual-band frequency band and bandwidth information. If there is no change, the output signal Cout2 controls the switch SW_GD to switch from endpoint 1 to endpoint 2 to maintain the normal dual-band operation mode. Otherwise, the output signal Cout2 controls the switch SW_GD to switch from endpoint 2 to endpoint 1 to switch to dual-band gain detection mode. The output signal Cout1 is connected to the input terminal SGin of the dual-band signal generator SG 230, used to control the dual-band signal generator SG 230 to generate a dual-band radio frequency signal with the frequency band and bandwidth required by the output signal Cout1 of the dual-band controller C211. Input signal 2, Cin2, is connected to the output signal GDout of the dual-band gain detector GD 240, representing the detected instantaneous gain characteristic of the dual-band power amplifier PA 150 within the dual-band frequency range. Output signal Cout3 is connected to the input terminal GC_Gin of the dual-band gain compensator GC 211. In the dual-band controller C 211, based on the instantaneous gain characteristic within the dual-band frequency range, as well as the dual-band frequency range and bandwidth information, and according to the principle of dual-band power spectral density equivalence, the compensation values ​​for the dual-band gain characteristic of the dual-band power amplifier PA 150 are calculated in a way that balances the power spectral density of the dual-band RF signal output from the dual-band power amplifier PA 150 within the dual-band frequency range and bandwidth. These compensation values ​​are then output through output signal Cout3 as the control input signal GC_Cin for the dual-band gain compensator GC 211, thereby controlling the dual-band gain compensator GC 211.

[0044] The dual-band gain compensator GC 221 is inserted into the transmit link inside the dual-band RRU device 400 after the dual-band transmit bandpass filter TBPF 140. It is connected to the dual-band power amplifier PA 150 via the second input terminal (terminal 2) of the switch SW_GD. Its input signal GCin comes from the output of the dual-band bandpass filter TBPF 140. After the internal dual-band compensation network compensates the gain characteristics of the dual-band power amplifier PA 150 in both the dual-band frequency band and bandwidth, the output signal GCout is input to the input terminal of the dual-band power amplifier PA 150. The compensation value of the dual-band gain characteristics of the internal dual-band compensation network comes from the control input signal (GC_Cin) of the dual-band gain compensator C 211, that is, the dual-band controller output signal 3 (Cout3).

[0045] The switching switch SW_GD is inserted into the transmit link inside the dual-frequency RRU device, between the dual-frequency gain compensator GC211 and the dual-frequency power amplifier PA150. Terminal 2 is connected to the output signal of the dual-frequency gain compensator GC211, terminal 1 is connected to the output SGout of the dual-frequency signal generator SG230 (i.e., input 1, GDin1, of the dual-frequency gain detector GD240), and terminal 3 is connected to the input signal of the dual-frequency power amplifier PA150. Its input signal SW_Cin comes from output 2 (Cout2) of the dual-frequency controller C211. After receiving a control command from the dual-frequency controller C211, the switching switch SW_GD switches between the normal dual-frequency operation mode and the dual-frequency gain detection mode, thereby ensuring the timeliness of dual-frequency gain detection and the effectiveness of normal operation.

[0046] The following is for reference Figure 5 An exemplary process for the system operation of the dual-frequency RRU device 400 according to Embodiment 1 of this disclosure will be described. Figure 5 This is an exemplary flowchart illustrating the specific execution process of a method 500 for improving the transmission performance of a dual-frequency RRU according to Embodiment 1 of this disclosure. The dual-frequency RRU device 400 can be configured to perform the following steps:

[0047] Step S501: Power on and initialize the dual-frequency RRU device 400;

[0048] Step S502: The dual-frequency interface unit IU 110 in the dual-frequency RRU device 400 outputs dual-frequency band and bandwidth information through the IUout signal;

[0049] Step S503: The dual-band controller C 211 receives the latest dual-band frequency band and bandwidth information and compares it with the previously saved dual-band frequency band and bandwidth information;

[0050] Step S504: If the dual-band frequency and bandwidth information remain unchanged, proceed to step S505, "Dual-band normal operation mode". If there are changes, proceed to step S508, "Dual-band gain detection mode".

[0051] Step S505: The dual-frequency controller C211 outputs signal 2 (Cout2) to control the switching switch SW_GD to switch to endpoint 2, and enters the normal dual-frequency operation mode;

[0052] Step S506: Disable the functions of the dual-frequency signal generator SG 230 and the dual-frequency gain detector GD 240;

[0053] Step S507: The dual-frequency gain compensator GC 221 operates based on the previously configured dual-frequency gain characteristic compensation value, and then proceeds to step S512;

[0054] Step S508: The dual-frequency controller C211 outputs signal 2 (Cout2) to control the switching switch SW_GD to switch to endpoint 1, which is in dual-frequency gain detection mode;

[0055] Step S509: The dual-frequency signal generator SG 230 generates and outputs a dual-frequency radio frequency signal that meets the frequency band and bandwidth requirements;

[0056] Step S510: The dual-frequency gain detector GD 240 detects and outputs the instantaneous gain characteristics of the dual-frequency power amplifier PA 150 in the dual-frequency band;

[0057] Step S511: The dual-frequency controller C211 calculates the dual-frequency gain characteristic compensation value based on the instantaneous gain characteristics within the dual-frequency band, as well as the dual-frequency band and bandwidth information, according to the dual-frequency power spectral density equivalence principle, and outputs it to the dual-frequency gain compensator.

[0058] Step S512: Continuously cycle through steps S502 to S511 to dynamically acquire and compensate for the instantaneous gain characteristics within the dual-frequency bands, so as to balance the dual-frequency power spectral density.

[0059] According to Embodiment 1 of this application, the dual-band RRU device 400 and / or the method 300 for improving the transmission performance of the dual-band RRU, by dynamically acquiring the instantaneous gain characteristics of the dual-band power amplifier in the dual-band frequency band, and thereby obtaining the corresponding gain characteristic compensation value, it is possible to ensure that the coverage range of adjacent dual bands is almost the same, which can effectively improve the transmission performance of the dual-band RRU device. On the other hand, only five components are added: dual-band controller C 211, dual-band gain compensator GC 221, dual-band signal generator SG230, dual-band gain detector GD 240, and switching switch SW_GD. Compared with the case of adding a power amplifier (dual power amplifier mode) with high volume, power consumption and cost, the system only uses a simple structure and workflow, with almost no increase in power consumption, volume, weight and cost, thereby improving the system adaptability, flexibility and resource utilization.

[0060] Furthermore, the SW_GD switch allows for convenient switching between dual-frequency normal operation mode and dual-frequency gain detection mode. Switching to dual-frequency gain detection mode can be done at fixed intervals (e.g., weekly, monthly, quarterly) to update the compensation value of the dual-frequency gain input to the dual-frequency gain compensator GC 211. Alternatively, operators can manually switch to dual-frequency gain detection mode for updates based on actual operating conditions. In particular, when external environmental factors, such as aging or hot weather, cause drift in the components of the dual-frequency RRU device 400, especially the characteristic parameters of the dual-frequency power amplifier PA 150, the switching and update cycle can be set to be shorter. This allows for more accurate dual-frequency gain compensation values, further improving the operational stability of the dual-frequency RRU device 400, extending its service life, and reducing maintenance and replacement costs.

[0061] Example 2

[0062] Figure 6 This is an exemplary overall structural diagram illustrating a dual-frequency RRU device 600 according to Embodiment 2 of this disclosure. The following is in conjunction with... Figure 4 The differences between the dual-frequency RRU device 400 in Embodiment 1 will be described primarily. Furthermore, in order to... Figure 4 Distinguish between the expressions, Figure 6 The dual-frequency controller in the middle is labeled C 212, as Figure 2 A specific example of the dual-frequency controller C 210 in the example; Figure 6 The dual-frequency gain compensator in the design is labeled GC 222, as... Figure 2 A specific example of the dual-frequency gain compensator GC 220.

[0063] More specifically, with Figure 4In comparison, apart from the dual-frequency controller C 212 and the dual-frequency gain compensator GC 222, the dual-frequency signal generator SG 230, the dual-frequency gain detector GD 240, and the switching switch SW_GD are omitted. For ease of understanding, the original components, except for the antenna, are shown with dashed lines, and the added components are shown with solid lines.

[0064] Preferably, the dual-frequency controller C 212 can pre-store compensation values ​​for the gain characteristics of the dual-frequency circuit under different frequency bands and bandwidths calculated in advance. Based on the frequency band and bandwidth information of the dual-frequency circuit received from the output signal IUout of the dual-frequency interface unit IU 110, it selects the corresponding compensation values ​​for the gain characteristics under the pre-stored compensation values. The operation of the dual-frequency gain compensator GC 222 is roughly the same as that of the dual-frequency gain compensator GC221 in Embodiment 1. Using the compensation value of the gain characteristics from the output signal Cout3 of the dual-frequency controller C 212, the gain characteristics of the dual-frequency power amplifier PA 150 are compensated in the dual-frequency band and bandwidth respectively through its internal dual-frequency compensation network, and then the compensation value is used as the output signal GCout and input to the input terminal of the dual-frequency power amplifier PA 150.

[0065] Accordingly, in the method for improving the transmission performance of a dual-band RRU according to Embodiment 2 of this disclosure, in the compensation value acquisition step S310, the compensation values ​​of the gain characteristics of the dual-band under different frequency bands and bandwidths can be referenced in advance. Based on the frequency band and bandwidth information of the dual-band received from the output signal IUout of the dual-band interface unit IU 110, each compensation value of the gain characteristics under the corresponding frequency band and bandwidth can be selected from the pre-stored compensation values.

[0066] Compared to Embodiment 1 of this disclosure, by omitting at least three components—the dual-band signal generator SG 230, the dual-band gain detector GD 240, and the switching switch SW_GD—the device size can be further reduced and manufacturing costs saved. As a cost-effective solution, it provides a compromise between "high precision / high cost" and "lower precision / lower cost" for application scenarios involving spread spectrum refarming and low-frequency co-construction and sharing among multiple operators.

[0067] Next, Figure 7 An exemplary block diagram of an apparatus 700 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure is shown.

[0068] like Figure 7As shown, the apparatus 700 for improving the transmission performance of a dual-band RRU according to an embodiment of the present disclosure includes: a memory 710 and a processor 720 coupled to the memory 710. The processor 720 is configured to execute the method 300 for improving the transmission performance of a dual-band RRU according to any embodiment of the present disclosure based on instructions stored in the memory 710.

[0069] The memory 710 may include, for example, system memory, fixed non-volatile storage media, etc. The system memory stores, for example, the operating system, application programs, boot loader, database, and other programs.

[0070] Figure 8 An exemplary configuration diagram of a computing device 800 is shown, which is capable of implementing a method 300 for improving the transmission performance of a dual-band RRU according to an exemplary embodiment of the present disclosure.

[0071] Computing device 800 is an example of a hardware device capable of applying the above aspects of this disclosure. Computing device 800 can be any machine configured to perform processing and / or computation. Computing device 800 can be, but is not limited to, a workstation, server, desktop computer, laptop computer, tablet computer, personal data assistant (PDA), smartphone, in-vehicle computer, or a combination thereof.

[0072] like Figure 8 As shown, computing device 800 may include one or more components that can be connected to or communicate with bus 802 via one or more interfaces. Bus 802 may include, but is not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, Enhanced ISA (EISA) bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus. Computing device 800 may include, for example, one or more processors 804, one or more input devices 806, and one or more output devices 808. The one or more processors 804 may be any type of processor and may include, but is not limited to, one or more general-purpose processors or special-purpose processors (such as dedicated processing chips). Processor 804 may, for example, be configured to implement method 300 for improving the transmission performance of dual-band RRU according to the exemplary embodiments described above in this disclosure. Input device 806 may be any type of input device capable of inputting information to the computing device and may include, but is not limited to, a mouse, keyboard, touchscreen, microphone, and / or remote controller. Output device 808 may be any type of device capable of presenting information and may include, but is not limited to, a display, speaker, video / audio output terminal, vibrator, and / or printer.

[0073] The computing device 800 may also include or be connected to a non-transitory storage device 814, which may be any non-transitory storage device capable of storing data, and may include, but is not limited to, disk drives, optical storage devices, solid-state storage, floppy disks, flexible disks, hard disks, magnetic tapes or any other magnetic media, compressed disks or any other optical media, cache memory and / or any other storage chips or modules, and / or any other media from which a computer may read data, instructions and / or code. The computing device 800 may also include random access memory (RAM) 810 and read-only memory (ROM) 812. ROM 812 may store executable programs, utilities, or processes in a non-volatile manner. RAM 810 provides volatile data storage and stores instructions related to the operation of the computing device 800. The computing device 800 may also include a network / bus interface 816 coupled to a data link 818. The network / bus interface 816 can be any kind of device or system capable of enabling communication with external devices and / or networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication devices and / or chipsets (such as Bluetooth™ devices, 802.11 devices, WiFi devices, WiMax devices, cellular communication facilities, etc.).

[0074] This disclosure can be implemented as any combination of apparatus, system, integrated circuit, and computer program on a non-transitory computer-readable medium. One or more processors can be implemented as integrated circuits (ICs), application-specific integrated circuits (ASICs), or large-scale integrated circuits (LSIs), system LSIs, super LSIs, or ultra LSI components that perform some or all of the functions described in this disclosure.

[0075] This disclosure includes the use of software, application programs, computer programs, or algorithms. Software, application programs, computer programs, or algorithms may be stored on a non-transitory computer-readable medium to cause a computer, such as one or more processors, to perform the steps described above and in the accompanying drawings. For example, one or more memories may store the software or algorithm in executable instructions, and one or more processors may be associated with executing a set of instructions of the software or algorithm to provide various functionalities according to embodiments described in this disclosure.

[0076] Software and computer programs (also referred to as programs, software applications, applications, components, or code) include machine instructions for programmable processors and can be implemented in high-level procedural languages, object-oriented programming languages, functional programming languages, logic programming languages, assembly languages, or machine languages. The term "computer-readable medium" means any computer program product, apparatus, or device used to provide machine instructions or data to a programmable data processor, such as magnetic disks, optical disks, solid-state storage devices, memories, and programmable logic devices (PLDs), including computer-readable media that receive machine instructions as computer-readable signals.

[0077] For example, computer-readable media may include dynamic random access memory (DRAM), random access memory (RAM), read-only memory (ROM), electrically erasable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium that can be used to carry or store required computer-readable program code in the form of instructions or data structures, and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. As used herein, a disk or disc includes compact discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy disks, and Blu-ray discs, wherein a disk typically copies data magnetically, while a disc copies data optically using a laser. Combinations of the above are also included within the scope of computer-readable media.

[0078] The subject matter of this disclosure is provided as examples of apparatus, systems, methods, and programs for performing the features described herein. However, other features or variations are contemplated in addition to those described above. It is anticipated that components and functions of this disclosure may be implemented using any emerging techniques that may replace any of the above-described implementations.

[0079] Furthermore, the above description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the spirit and scope of this disclosure. Various processes or components may be appropriately omitted, substituted, or added in various embodiments. For example, features described with respect to certain embodiments may be combined in other embodiments.

[0080] Furthermore, although operations are depicted in a specific order in the accompanying drawings in this disclosure, this should not be construed as requiring such operations to be performed in the specific order shown or in sequential order, or requiring the execution of all illustrated operations to achieve the desired result. In some cases, multitasking and parallel processing can be advantageous.

Claims

1. An apparatus for improving the transmission performance of a dual-band RRU, used in an RRU device that converts dual-band baseband signals to radio frequency signals, wherein the RRU device has at least a dual-band interface unit and a dual-band power amplifier on the transmission link serving as an uplink signal processing link, the apparatus comprising: A dual-frequency controller, connected to the dual-frequency interface unit, receives frequency band and bandwidth information of the dual frequencies as the processing objects, and obtains compensation values ​​corresponding to the gain characteristics of the dual-frequency power amplifier in their respective frequency bands and bandwidths in a way that equalizes the power spectral density of the dual-frequency radio frequency signals output from the dual-frequency power amplifier. as well as A dual-frequency gain compensator, connected to the dual-frequency power amplifier, compensates for the gain characteristics within the frequency band and bandwidth of the dual frequencies according to the various compensation values ​​from the dual-frequency controller, and outputs the compensated gain characteristics to the dual-frequency power amplifier.

2. The apparatus according to claim 1, further comprising: A dual-frequency signal generator generates a dual-frequency radio frequency signal that meets the requirements of the corresponding frequency band and bandwidth based on the frequency band and bandwidth information output by the dual-frequency controller, and outputs it to the dual-frequency power amplifier and the dual-frequency gain detector. A dual-band gain detector receives a dual-band radio frequency signal from the dual-band signal generator and the output of the dual-band power amplifier for the dual-band radio frequency signal, in order to detect the instantaneous gain characteristics of the dual-band power amplifier within the respective frequency bands of the dual-band signal generator. The dual-frequency controller calculates each compensation value based on the instantaneous gain characteristics from the dual-frequency gain detector and the frequency band and bandwidth information of the dual frequencies.

3. The apparatus according to claim 2, further comprising: Use the toggle switch to switch between dual-frequency normal operation mode and dual-frequency gain detection mode. The dual-band controller compares the newly received frequency band and bandwidth information of the dual band with the previously saved frequency band and bandwidth information of the dual band. If the comparison result shows no change, the dual-frequency controller instructs the switch to switch to normal dual-frequency operation mode, thereby turning off the dual-frequency signal generator and the dual-frequency gain detector. If the comparison result changes, the dual-frequency controller instructs the switch to switch to dual-frequency gain detection mode, thereby activating the dual-frequency signal generator and the dual-frequency gain detector.

4. The apparatus according to claim 1, wherein, The dual-band controller pre-stores compensation values ​​for the gain characteristics of the dual-band under different frequency bands and bandwidths, and selects each compensation value from the pre-stored compensation values ​​based on the frequency band and bandwidth information of the dual-band received from the dual-band interface unit.

5. The apparatus according to claim 1, wherein, The dual-band frequency is either a combination of an 800MHz band and a 900MHz band, or a combination of a 1.8GHz band and a 2.1GHz band.

6. A method for improving the transmission performance of a dual-band RRU, executed in a dual-band RRU device that converts dual-band baseband signals to radio frequency signals, the dual-band RRU device having at least a dual-band interface unit and a dual-band power amplifier on a transmission link serving as an uplink signal processing link, the method comprising: The compensation value acquisition step involves obtaining, based on the frequency band and bandwidth information of the dual-frequency signals being processed, received from the dual-frequency interface unit, in a manner that equalizes the power spectral density of the dual-frequency radio frequency signals output from the dual-frequency power amplifier, each compensation value corresponding to the dual-frequency signals and within their respective frequency bands and bandwidths, for the gain characteristics of the dual-frequency power amplifier. as well as The dual-frequency gain compensation step involves compensating the gain characteristics within the frequency band and bandwidth of the dual frequencies according to the various compensation values, and then outputting the compensated gain characteristics to the dual-frequency power amplifier.

7. The method of claim 6, wherein In the compensation value acquisition step, Based on the frequency band and bandwidth information of the dual frequencies, a dual-frequency radio frequency signal that meets the corresponding frequency band and bandwidth requirements is generated. Then, based on the dual-frequency radio frequency signal and the output of the dual-frequency power amplifier for the dual-frequency radio frequency signal, the instantaneous gain characteristics of the dual-frequency power amplifier within the respective frequency bands of the dual frequencies are detected. Then, based on the instantaneous gain characteristics and the frequency band and bandwidth information of the dual frequencies, the compensation values ​​are calculated.

8. The method according to claim 7, further comprising: The switching process involves comparing the newly received dual-band frequency band and bandwidth information with the previously saved dual-band frequency band and bandwidth information, and switching between the dual-band normal operation mode and the dual-band gain detection mode based on the comparison result. If the comparison result shows no change, the system switches to normal dual-frequency operation mode, allowing the dual-frequency gain compensation step to continue operating based on the compensation values ​​previously obtained in the compensation value acquisition step. If the comparison result shows a change, switch to dual-frequency gain detection mode, and repeat the compensation value acquisition step and the dual-frequency gain compensation step based on the latest received frequency band and bandwidth information of the dual frequencies.

9. The method of claim 6, wherein In the compensation value acquisition step, the compensation values ​​are selected from the pre-stored compensation values ​​of the gain characteristics of the dual-band under different frequency bands and bandwidths, based on the frequency band and bandwidth information of the dual-band received from the dual-band interface unit.

10. The method according to claim 6, wherein, The dual-band frequency is either a combination of an 800MHz band and a 900MHz band, or a combination of a 1.8GHz band and a 2.1GHz band.

11. An apparatus for improving the transmission performance of a dual-band RRU, comprising: A memory that stores instructions; as well as The processor is configured to execute instructions stored in the memory to perform the method according to any one of claims 6 to 10.

12. A computer-readable storage medium comprising computer-executable instructions, which, when executed by one or more processors, cause the one or more processors to perform the method according to any one of claims 6 to 10.

13. A computer program product comprising a computer program / instructions that, when executed by a processor, implement the steps of the method according to any one of claims 6 to 10.

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