CN114143866A

CN114143866A - Method, apparatus and storage medium for preventing saturation of receiver uplink

Info

Publication number: CN114143866A
Application number: CN202010921559.3A
Authority: CN
Inventors: 李妍琳
Original assignee: Chengdu TD Tech Ltd
Current assignee: Chengdu TD Tech Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2022-03-04
Anticipated expiration: 2040-09-04
Also published as: CN114143866B

Abstract

The embodiment of the application provides a saturation prevention method, equipment and a storage medium for an uplink of a receiver, the method is started by electrifying an RRU of a base station, after carriers are established, RTWP power values of each carrier are periodically detected through uplink power control, when the RTWP power value of any carrier is greater than a first preset threshold, a G6 software compensation normalization value of the carrier is adjusted downwards, and when the RTWP power value of any carrier is less than or equal to a second preset threshold and the G6 software compensation normalization value of the carrier is less than a preset G6 initial value, the G6 software compensation normalization value of the carrier is adjusted upwards, so that the G6 outlet peak power of the carrier is less than or equal to zero, premature saturation of the uplink digital domain link of the receiver is prevented, and a hardware link of the base station receiver is protected.

Description

Method, apparatus and storage medium for preventing saturation of receiver uplink

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a method, equipment and a storage medium for preventing a receiver uplink from being saturated.

Background

With the development of mobile communication technology, the communication environment becomes more complex, the types of signals existing in space become more various, and the performance requirements on the receiver of the base station become more strict. At the receiver of the base station, if the large amplitude signal enters the receiver directly, there is a possibility that the hardware link of the receiver is damaged. When a hardware link of the receiver is partially damaged, the base station cannot work normally, user communication in an area covered by the base station is seriously affected, and maintenance cost is generated for the base station in a later period. It is therefore important to protect the hardware link of the receiver of the base station.

In the related art, an Analog Automatic Gain Control (AAGC) algorithm and a Digital Automatic Gain Control (DAGC) algorithm are generally used to prevent premature saturation of the uplink of the receiver.

However, the AAGC algorithm and the DAGC algorithm do not work well for saturation of the if digital domain, and therefore, how to prevent the receiver uplink digital domain link from being saturated too early becomes an urgent problem to be solved.

Disclosure of Invention

To solve the problems in the prior art, the present application provides a method, an apparatus, and a storage medium for preventing saturation of an uplink of a receiver.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

in a first aspect, an embodiment of the present application provides a method for preventing a receiver uplink from being saturated, where the method includes the following steps:

the method comprises the steps that a Remote Radio Unit (RRU) of a base station is powered on and started, after carriers are established, a Received Total Power (RTWP) Power value of each carrier is detected by uplink Power control with preset time as a period;

when the RTWP power value of any one carrier is detected to be larger than a first preset threshold value, downwards adjusting the G6 software compensation normalization value of any one carrier so as to enable the G6 outlet peak power of any one carrier to be smaller than or equal to zero;

when the RTWP power value of any one carrier is detected to be smaller than or equal to a second preset threshold, the second preset threshold is smaller than the first preset threshold, and the G6 software compensation normalization value of any one carrier is smaller than a preset G6 initial value, the G6 software compensation normalization value of any one carrier is adjusted upwards, so that the G6 outlet peak power of any one carrier is smaller than or equal to zero.

In a possible implementation manner, the preset G6 initial value is determined by:

and determining the preset G6 initial value according to the normalized gain scaling value and the radio frequency fixed attenuation value of the RRU uplink, and gain change of a G3_4 outlet caused by changing the bit width from a first preset value to a second preset value and gain change of a G6 outlet caused by changing the bit width from a third preset value to a fourth preset value, wherein the second preset value is larger than the first preset value, and the fourth preset value is smaller than the third preset value.

In one possible implementation, the adjusting the software compensation normalization value of G6 of the any one carrier downward so that the G6 peak outlet power of the any one carrier is less than or equal to zero includes:

and according to the preset G6 initial value, the RTWP power value of any one carrier and the first preset threshold, downwards adjusting the G6 software compensation normalization value of any one carrier so as to enable the G6 outlet peak power of any one carrier to be less than or equal to zero.

In one possible implementation, the adjusting the software compensation normalization value of G6 of the any one carrier upward to make the G6 outlet peak power of the any one carrier less than or equal to zero includes:

and adjusting the G6 software compensation normalization value of any carrier upwards according to the preset G6 initial value, the second preset threshold value and the RTWP power value of any carrier, so that the G6 outlet peak power of any carrier is smaller than or equal to zero.

In a possible implementation manner, the determining the preset G6 initial value according to the normalized gain scaling value and the fixed attenuation value of the radio frequency of the RRU uplink, and the gain variation introduced by the G3_4 outlet due to the change of the bit width from the first preset value to the second preset value and the gain variation introduced by the G6 outlet due to the change of the bit width from the third preset value to the fourth preset value includes:

calculating the radio frequency fixed attenuation value and the sum of the gain change introduced by the G3_4 outlet due to the bit width changing from the first preset value to the second preset value and the gain change introduced by the G6 outlet due to the bit width changing from the third preset value to the fourth preset value;

and determining the initial value of the preset G6 according to the difference value of the normalized gain calibration value and the calculated sum value.

In a possible implementation manner, the downward adjustment of the G6 software compensation normalization value of any one carrier according to the preset G6 initial value, the RTWP power value of any one carrier, and the first preset threshold includes:

calculating the difference value between the RTWP power value of any one carrier and the first preset threshold;

and adjusting the G6 software compensation normalization value of any carrier downwards according to the difference value between the preset G6 initial value and the calculated difference value.

In a possible implementation manner, the adjusting the G6 software compensation normalization value of any one carrier upwards according to the preset G6 initial value, the second preset threshold value, and the RTWP power value of any one carrier includes:

calculating a difference value between the second preset threshold value and the RTWP power value of any carrier;

and adjusting the G6 software compensation normalization value of any carrier upwards according to the sum of the preset G6 initial value and the calculated difference value.

In a second aspect, an embodiment of the present application provides an anti-saturation apparatus for an uplink of a receiver, including:

the detection module is used for electrifying and starting the RRU of the base station, and detecting the RTWP power value of each carrier by uplink power control with preset time as a period after the carriers are established;

a first adjusting module, configured to, when it is detected that an RTWP power value of any one carrier is greater than a first preset threshold, adjust a G6 software compensation normalization value of the any one carrier downward, so that a G6 outlet peak power of the any one carrier is less than or equal to zero;

a second adjusting module, configured to adjust the G6 software compensation normalization value of any carrier upward when detecting that the RTWP power value of any carrier is smaller than or equal to a second preset threshold, where the second preset threshold is smaller than the first preset threshold, and the G6 software compensation normalization value of any carrier is smaller than a preset G6 initial value, so that the G6 outlet peak power of any carrier is smaller than or equal to zero.

In one possible design, the second adjusting module is further configured to:

In one possible design, the first adjusting module is specifically configured to:

In a possible design, the second adjusting module is specifically configured to:

In one possible design, the second adjusting module is further configured to:

In a third aspect, an embodiment of the present application provides an anti-saturation device for a receiver uplink, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method for receiver uplink anti-saturation as set forth in the first aspect and various possible designs of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method for preventing saturation of an uplink of a receiver according to the first aspect and various possible designs of the first aspect is implemented.

In a fifth aspect, the present application provides a computer program or computer program product comprising computer instructions. Optionally, the computer instructions are stored in a computer readable storage medium. The computer instructions may be readable by a processor of a computing device from a computer-readable storage medium, the processor executing the computer instructions to cause the computing device to perform the method of anti-saturation of a receiver uplink provided by the first aspect described above or the various possible designs of the first aspect.

In a sixth aspect, embodiments of the present application provide a chip including at least one processor and a communication interface. Further optionally, the chip further comprises at least one memory for storing computer instructions. Wherein the communication interface is configured to provide information input and/or output to the at least one processor. The at least one processor is configured to execute instructions to implement a method for receiver uplink anti-saturation in the implementation manner of the first aspect and any possible implementation manner of the first aspect. Optionally, the at least one processor includes at least one of a Digital Signal Processor (DSP), a Central Processing Unit (CPU), or a Graphics Processing Unit (GPU).

The method, the device and the storage medium for preventing saturation of an uplink of a receiver provided by the embodiment of the application are characterized in that an RRU of a base station is powered on and started, after carriers are established, RTWP power values of each carrier are periodically detected through uplink power control, when the RTWP power value of any carrier is greater than a first preset threshold, a G6 software compensation normalization value of the carrier is adjusted downwards, and when the RTWP power value of any carrier is less than or equal to a second preset threshold, and the G6 software compensation normalization value of the carrier is less than a preset G6 initial value, the G6 software compensation normalization value of the carrier is adjusted upwards, so that the G6 outlet peak power of the carrier is less than or equal to zero, premature saturation of the uplink digital domain link of the receiver is prevented, and a hardware link of the base station receiver is protected.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a product form diagram of a DBS3900 Discrete Spectrum Aggregation (DSA) according to an embodiment of the present disclosure;

fig. 2 is a physical diagram of the entire uplink of an RRU according to an embodiment of the present application;

fig. 3 is a schematic diagram of an anti-saturation system architecture of a receiver uplink according to an embodiment of the present application;

fig. 4 is a flowchart illustrating an anti-saturation method for an uplink of a receiver according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating another method for preventing saturation of an uplink of a receiver according to an embodiment of the present disclosure;

FIG. 6 is a diagram of a physical connection provided by an embodiment of the present application;

fig. 7 is a schematic structural diagram of an uplink anti-saturation device of a receiver according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of a basic hardware architecture of an anti-saturation device for a receiver uplink provided in the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," and "fourth," if any, in the description and claims of this application and the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the related art, a DBS3900 DSA distributed base station is taken as an example, and the base station includes two basic functional modules, namely a BaseBand Control Unit (BBU) 3910 and an RRU. The two basic functional modules have small volume and light weight, are convenient to flexibly install according to site environment, realize quick deployment and can meet different capacity requirements through flexible configuration. The product morphology of DBS3900 DSA is shown in fig. 1.

When the DSA product is oriented to overseas markets, radio frequency indexes need to meet DSA overseas spectrum regulations, an ETSI/FCC single carrier is taken as a main part, and multiple carriers are taken as supplements. ETSI EN300113 certification is the basis for some regions. In the related art, "EN _300113v020201 p" is an authentication standard document of the ENSI EN300113, wherein in section 8.4Error background at high input levels, in order to examine the dynamic range of an RRU receiver and the receiving AGC performance of a link, it is required that the bit Error rate of uplink demodulation is not higher than 10e-4 and a packet loss phenomenon is not required to exist when a high-power useful signal of-10 dBm is input in the uplink.

Taking the DSA 230M project as an example, because the DSA 230M project is oriented to the domestic market and does not need to meet overseas regulations, the index can only achieve that the uplink demodulation bit error rate is not higher than 10e-4 when the high-power useful signal is-34 dBm, and completely depends on the uplink AAGC algorithm, so that correct demodulation of the higher-power useful signal cannot be supported. Currently, for an overseas DSA 400M project, hardware is subjected to frequency change on the basis of 230M, the actual measurement of the index is the same as 230M, only DSA overseas regulations have requirements on the index of such a large signal at present, and the industry has no feasible algorithm.

In related items, an intermediate frequency chip of the RRU is a digital chip of SD6219, and a physical diagram of the entire uplink of the RRU is shown in fig. 2. Here, fig. 2 only shows parameters related to RRU uplink premature saturation, such as ADC egress data bit width and G3_4 egress data bit width.

The ADC outlet data bit width is 16bit, the G3_4 outlet data bit width is 24bit, the high bit is 8bit, the gain is 8-6-48 dB, the G6 outlet is 18bit, and the method is completed by cutting 10bit and saturating 12bit through the configuration of a chip manual. Where 10 bits are actually multiplied by 24 bits of data with (u,16,6), the bit width is extended to 30 bits. The saturated 20bit is cut 12bit at the high bit to obtain G6 outlet 18 bit. This process is generally equivalent to 6 bits truncated for the high bits and a gain boost of 6 x6 to 36 dB.

The chip handbook is described in the following:

the 0 th carrier gain normalized bit width is truncated and has an address of 0x2C12 — 0000+0x2051, and the specific configuration value is provided by the receive gain soft characteristics document.

0x 9: cutting 9 bits; 0 xA: cutting off 10 bits; 0 xB: cutting 11 bits; and others: invalid;

the 0 th carrier gain normalized saturation bit width has an address of 0x2C12 — 0000+0x2052, and the specific configuration value is provided by the receive gain soft profile.

0x 5: 5 bits of saturation; 0x 6: 6 bits of saturation; 0x 7: 7 bits are saturated; 0x 9: 9 bits are saturated; 0 xA: 10 bits of saturation; 0 xB: 11 bits are saturated; 0 xC: 12 bits are saturated; 0 xD: saturated 13 bit; and others: and (4) invalidation.

A bit width processing module is arranged behind the DAGC, the lower 3 bits can be cut off, and finally, the 15bit width is output to the CPRI. The cut-off bit has little effect on power.

Under the current link budget, the normalized gain is 24dB, and the starting control threshold peak value of the AAGC algorithm is-11 dBfs. The link playing process after combining the gain caused by the bit width change and the software normalized gain compensation value according to different power gears of the air interface is shown in the following table 1:

table 1 DSA RRU uplink power deduction table

As can be seen from the table, although the AAGC algorithm can prevent premature saturation of the uplink radio frequency link, and the DAGC algorithm can automatically adjust the gain of CPRI ingress baseband data, both of them are ineffective for saturation of the if digital domain. If the software does not perform other intervention, the current link budget, when the air interface is-34 dBm, the peak power of the G6 outlet is already 0dBfs and is saturated, the air interface power is saturated again, as shown by-10 dBm and-28 dBm of the first row and the second row in the table, the peak power of the G6 outlet is already a positive value, that is, is saturated. The requirements of-10 dBm large signals and correct demodulation required by the regulation ETSI EN300113 cannot be met. Wherein, the RTWP power statistic in the table is the power value (in dbfs) at the RTWP position of the data field minus the power value (in dBm) reversely pushed to the upstream gap by the link budget.

Therefore, the embodiment of the present application provides a method for preventing saturation of an uplink of a receiver, which dynamically adjusts a G6 software compensation normalization value according to an RTWP power value through periodic statistics of the uplink RTWP power value, so that a G6 outlet peak power is less than or equal to zero, that is, the uplink digital domain link of the receiver is prevented from being saturated too early, and a hardware link of a base station receiver is protected.

The method for preventing saturation of the uplink of the receiver provided in the embodiment of the present application may be applied to the receiver uplink saturation prevention, and further, the method may also be applied to the receiver downlink saturation prevention, which is not particularly limited in the embodiment of the present application.

Optionally, the method for preventing the receiver uplink from being saturated provided by the embodiment of the present application may be applied to an application scenario as shown in fig. 3. Fig. 3 only illustrates one possible application scenario of the receiver uplink anti-saturation method provided in the embodiment of the present application by way of example, and the application scenario of the receiver uplink anti-saturation method provided in the embodiment of the present application is not limited to the application scenario illustrated in fig. 3.

Fig. 3 is a schematic diagram of an anti-saturation system architecture for the uplink of a receiver. In fig. 3, the above-described architecture includes at least one of a receiving device 301, a processor 302, and a display device 303.

It is understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the architecture of the anti-saturation system for the uplink of the receiver. In other possible embodiments of the present application, the foregoing architecture may include more or less components than those shown in the drawings, or combine some components, or split some components, or arrange different components, which may be determined according to practical application scenarios, and is not limited herein. The components shown in fig. 3 may be implemented in hardware, software, or a combination of software and hardware.

In a specific implementation process, the receiving device 301 may be an input/output interface or a communication interface.

The processor 302 can periodically count the uplink RTWP power value, and further dynamically adjust the G6 software compensation normalization value according to the RTWP power value, so that the G6 outlet peak power is less than or equal to zero, that is, the uplink digital domain link of the receiver is prevented from being saturated too early, and the hardware link of the base station receiver is protected.

The display device 103 may be used to display the adjustment result and the like.

The display device may also be a touch display screen for receiving user instructions while displaying the above-mentioned content to enable interaction with a user.

It should be understood that the processor may be implemented by reading instructions in the memory and executing the instructions, or may be implemented by a chip circuit.

In addition, the system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that along with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The technical solutions of the present application are described below with several embodiments as examples, and the same or similar concepts or processes may not be described in detail in some embodiments.

Fig. 4 is a flowchart illustrating a method for preventing saturation of an uplink of a receiver according to an embodiment of the present disclosure, where an execution subject of the embodiment of the present disclosure may be the processor 302 in the embodiment of fig. 3. As shown in fig. 4, the method may include:

s401: and powering on and starting the RRU of the base station, and detecting the RTWP power value of each carrier by taking preset time as a period through uplink power control after the carriers are established.

The preset time may be determined according to an actual situation, for example, 100ms, and this is not particularly limited in the embodiment of the present application.

Here, after the RRU is powered on, the processor counts the uplink RTWP power value with a preset time, for example, 100ms as a period, and counts the power of all carriers within one period.

S402: when the RTWP power value of any carrier is detected to be larger than a first preset threshold value, the G6 software compensation normalization value of the carrier is adjusted downwards, so that the G6 outlet peak power of the carrier is smaller than or equal to zero.

Wherein the first preset threshold value may be determined according to actual conditions, for example, -16 dBfs. Upon detecting that the RTWP power value for any one carrier is greater than a first preset threshold, e.g., -16dBfs, the processor may adjust the G6 software compensation normalization value for that carrier downward such that the G6 outlet peak power for that carrier is less than or equal to zero, i.e., not saturated.

S403: when the RTWP power value of any carrier is detected to be smaller than or equal to a second preset threshold which is smaller than the first preset threshold and the G6 software compensation normalization value of the carrier is smaller than a preset G6 initial value, the G6 software compensation normalization value of the carrier is adjusted upwards to enable the G6 outlet peak power of the carrier to be smaller than or equal to zero.

For example, the initial value of the preset G6 may be determined by:

and determining the preset G6 initial value according to the normalized gain scaling value and the radio frequency fixed attenuation value of the RRU uplink, and the gain change of the G3_4 outlet caused by the change of the bit width from the first preset value to the second preset value and the gain change of the G6 outlet caused by the change of the bit width from the third preset value to the fourth preset value, wherein the second preset value is larger than the first preset value, and the fourth preset value is smaller than the third preset value.

The first preset value, the second preset value, the third preset value and the fourth preset value can be determined according to actual conditions, for example, the first preset value is 16 bits, the second preset value is 24 bits, the third preset value is 24 bits, and the fourth preset value is 18 bits, which is not limited in this embodiment of the present application.

Optionally, the determining a preset G6 initial value according to the normalized gain scaling value and the radio frequency fixed attenuation value of the RRU uplink, and the gain variation introduced by the G3_4 outlet due to the change of the bit width from the first preset value to the second preset value and the gain variation introduced by the G6 outlet due to the change of the bit width from the third preset value to the fourth preset value includes:

calculating the sum of the RF fixed attenuation value and the gain variation introduced by the G3_4 outlet due to the bit width changing from the first preset value to the second preset value and the gain variation introduced by the G6 outlet due to the bit width changing from the third preset value to the fourth preset value;

and determining the initial value of the preset G6 according to the difference value between the normalized gain calibration value and the calculated sum value.

For example, by expression

G_{6_init}＝G_unify-(G_Rf+G_34bit+G_6bit)

Determining the initial value G of the preset G6_{6_init}Wherein G is_unifyIs the normalized gain scaling value (24dB), G_RfFor fixed attenuation (30dB) at radio frequency, G_34bitThe gain variation (-48dB), G, introduced by the change in bit width from a first preset value, e.g. 16 bits, to a second preset value, e.g. 24 bits, is exported for G3_4_6bitThe exit for G6 is the gain variation (36dB) introduced by the bit width changing from the third preset value, e.g. 24bit, to the fourth preset value, e.g. 18 bit. These fixed values are substituted into the above formula to obtain G_{6_init}＝24-(30-48+36)＝6dB。

Here, the second preset threshold may be determined according to actual conditions, for example, -19 dBfs.

When it is detected that the RTWP power value of any one carrier is less than or equal to a second preset threshold, for example, -19dBfs, and the G6 software compensation normalization value of the carrier is less than a preset G6 initial value, for example, 6dB, the processor may adjust the G6 software compensation normalization value of the carrier upward, so that the G6 outlet peak power of the carrier is less than or equal to zero, i.e., not saturated.

In addition, when it is detected that the RTWP power value of any one carrier is greater than the second preset threshold and is less than or equal to the first preset threshold, the processor may perform the step of detecting the RTWP power value of each carrier again by the uplink power control with a preset time as a period by taking the uplink power control as a period, for example, with a period of 500 ms.

As can be seen from the above description, in the embodiment of the present application, after the RRU of the base station is powered on and started, and the carriers are established, the RTWP power value of each carrier is periodically detected through uplink power control, when the RTWP power value of any carrier is greater than a first preset threshold, the G6 software compensation normalization value of the carrier is adjusted downward, and when the RTWP power value of any carrier is less than or equal to a second preset threshold and the G6 software compensation normalization value of the carrier is less than a preset G6 initial value, the G6 software compensation normalization value of the carrier is adjusted upward, so that the G6 outlet peak power of the carrier is less than or equal to zero, thereby preventing the uplink digital domain link of the receiver from being saturated prematurely and protecting the hardware link of the base station receiver.

In addition, in the embodiment of the present application, when the G6 software compensation normalization value of the carrier is adjusted downward, the preset G6 initial value, the RTWP power value of the carrier, and the first preset threshold are considered, and when the G6 software compensation normalization value of the carrier is adjusted upward, the preset G6 initial value, the second preset threshold, and the RTWP power value of the carrier are considered, and fig. 5 is a flowchart of another method for preventing saturation of an uplink of a receiver according to the embodiment of the present application. As shown in fig. 5, the method includes:

s501: and powering on and starting the RRU of the base station, and detecting the RTWP power value of each carrier by taking preset time as a period through uplink power control after the carriers are established.

Step S501 is the same as the implementation of step S401, and is not described herein again.

S502: when the RTWP power value of any carrier is detected to be larger than a first preset threshold value, the G6 software compensation normalization value of the carrier is adjusted downwards according to the preset G6 initial value, the RTWP power value of the carrier and the first preset threshold value, so that the G6 outlet peak power of the carrier is smaller than or equal to zero.

For example, the adjusting the G6 software compensation normalization value of the carrier downward according to the preset G6 initial value, the RTWP power value of the carrier, and the first preset threshold may include:

calculating a difference value between the RTWP power value of the carrier and the first preset threshold;

and adjusting the G6 software compensation normalization value of the carrier downwards according to the difference value between the preset G6 initial value and the calculated difference value.

For example, the G6 software compensated normalization value for the carrier is adjusted downward to the difference between the default G6 initial value and the calculated difference.

In some possible embodiments, the first preset threshold is 16dBfs, which can be expressed by the following expression

G_{6_i}＝G_{6_init}-(P_RTWP,i-(-16))

Adjusting downwards G6 software compensation normalization value of carrier i, wherein G_{6_i}Software compensation of the normalization value, G6, for the carrier i after downward adjustment_6-initFor the above-mentioned predetermined initial value of G6, P_RTWP,iThe RTWP power value of the carrier i.

S503: when the RTWP value of the carrier is detected to be smaller than or equal to a second preset threshold which is smaller than a first preset threshold and the G6 software compensation normalization value of the carrier is smaller than a preset G6 initial value, the G6 software compensation normalization value of the carrier is adjusted upwards according to the preset G6 initial value, the second preset threshold and the RTWP value of the carrier, so that the G6 outlet peak power of the carrier is smaller than or equal to zero.

For example, the adjusting the G6 software compensation normalization value of the carrier upward according to the preset G6 initial value, the second preset threshold value, and the RTWP power value of the carrier may include:

calculating the difference value between the second preset threshold value and the RTWP power value of the carrier wave;

and adjusting the G6 software compensation normalization value of the carrier wave upwards according to the sum of the preset G6 initial value and the calculated difference value.

For example, the G6 software compensation normalization value of the carrier wave is adjusted upward to the sum of the preset G6 initial value and the calculated difference value.

In some possible embodiments, taking the second preset threshold as 19dBfs as an example, the second preset threshold may be expressed by the following expression

G_6-i＝G_6-init+((-19)-P_RTWP,i)

Adjusting the G6 software compensation normalization value of the carrier i upwards, wherein G_{6_i}Software compensation of the normalization value, G6, for the carrier i after upward adjustment_{6_init}For the above-mentioned predetermined initial value of G6, P_RTWP,iThe RTWP power value of the carrier i.

Here, if the actual interference model is considered, there will be a frequently occurring large interference scenario, and it is necessary to add a step limit when adjusting G6 down, and one adjustment does not exceed-5 dB at most. Corresponding to a period, for example, 500ms can only adjust 5dB, and when the air interface power changes from-110 dBm to-10 dBm, 10s of time is needed. This is a concern when testing assay sensitivity. Meanwhile, when the large interference disappears quickly, the service is recovered quickly, the speed is high when G6 is required to be adjusted up for recovery, and no step limitation exists.

In the embodiment of the application, by the above anti-saturation method for the uplink of the receiver, under high power, that is, the digital domain is greater than a first preset threshold, for example, -16dBfs, corresponding to an air interface of-40 dBm, the G6 adjustment algorithm is started; when the power drops to a second preset threshold, for example, -19dBfs, corresponding to-43 dBm air interface, G6 falls back to the initial value.

Exemplary, as shown in table 2:

table 2 DSA RRU uplink power deduction table processed by the above method of the present application

It can be seen from the table, and can be seen from comparing with table 1, after the method of the present application is used for processing, when the power of the air interface is-34 dBm, because the RTWP power statistic value is-10 dBm and is greater than the threshold TH-16dBfs, the software adjusts G6 from 6dB to 0dB, so that the RTWP power statistic value is restored to be near TH. Similarly, when the air interface power is-28 dBm and-10 dBm, G6 is adjusted to-6 dB and-24 dB, the peak power of the outlet of the upstream G6 is ensured to be about-6 dBfs, and the RTWP power value is about-16 dBm. And the undersaturation of the uplink intermediate frequency digital domain link under the large signal is ensured.

According to the embodiment of the application, when the RTWP power value of any carrier is greater than a first preset threshold, the G6 software compensation normalization value of the carrier is adjusted downwards according to the preset G6 initial value, the RTWP power value of the carrier and the first preset threshold, and when the RTWP power value of any carrier is less than or equal to a second preset threshold and the G6 software compensation normalization value of the carrier is less than a preset G6 initial value, the G6 software compensation normalization value of the carrier is adjusted upwards according to the preset G6 initial value, the second preset threshold and the RTWP power value of the carrier, so that the G6 outlet peak power of the carrier is less than or equal to zero, premature saturation of an uplink digital domain link of a receiver is prevented, and a hardware link of a base station receiver is protected.

In addition, in order to further verify that the receiver uplink anti-saturation method provided by the embodiment of the present application can make the G6 outlet peak power of the carrier less than or equal to zero, and prevent the receiver uplink digital domain link from being saturated too early, when the embodiment of the present application tests a large useful signal injected into an actual uplink air interface through the physical connection diagram of fig. 6, the error rate processed by the method of the present application is reflected by the error rate on the 141 tool. In the figure, a signal source output signal reaches an RRU uplink air interface through a 10dB attenuator, uplink data is demodulated after being transmitted to a BBU L1, and the demodulated error rate is displayed through a 141 tool. Here, the first preset threshold is-16 dbfs, and the second preset threshold is-19 dbfs.

The signal source outputs a useful signal of-29 dBm, the useful signal reaching the RRU gap is-39 dBm after passing through the 10dB attenuator, the attenuation value of G6 is observed at the moment and is an initial value of 6dB, and the value counted by RTWP power is-17.1 dBm. The 141 tool at this point counted 99.99% unpacking accuracy.

And increasing the output signal of the signal source to-31 dBm, wherein the signal reaching the air interface of the RRU is-41 dBm, observing the attenuation value of G6, wherein the attenuation value is 5dB, and the value counted by the RTWP power is-16.2 dBm. The 141 tool at this point counted 99.99% unpacking accuracy.

And continuously increasing the output signal of the signal source to-20 dB, wherein the signal reaching the air interface of the RRU is-10 dBm, observing the attenuation value of G6 to be-24 dB, and obtaining the value of-16.1 dBm by RTWP power statistics. The 141 tool at this point counted 99.99% unpacking accuracy.

In conclusion, the test results are in line with the link budget and can meet the regulatory requirements for useful signals that are-10 dBm large.

Fig. 7 is a schematic structural diagram of an anti-saturation apparatus for a receiver uplink according to an embodiment of the present application, corresponding to the anti-saturation method for a receiver uplink according to the foregoing embodiment. For convenience of explanation, only portions related to the embodiments of the present application are shown. Fig. 7 is a schematic structural diagram of an uplink anti-saturation device of a receiver according to an embodiment of the present disclosure. As shown in fig. 7, the uplink anti-saturation device 70 of the receiver includes: a detection module 701, a first adjustment module 702, and a second adjustment module 703. The anti-saturation device of the uplink of the receiver can be the processor itself or a chip or an integrated circuit for realizing the functions of the processor. It should be noted here that the division of the detection module, the first adjustment module, and the second adjustment module is only a division of logical functions, and the two may be integrated or independent physically.

The detection module 701 is configured to power on an RRU of a base station to start, and after a carrier is established, detect an RTWP power value of each carrier by uplink power control with a preset time as a period.

A first adjusting module 702, configured to, when it is detected that the RTWP power value of any one carrier is greater than a first preset threshold, adjust the G6 software compensation normalization value of any one carrier downward, so that the G6 outlet peak power of any one carrier is less than or equal to zero.

A second adjusting module 703, configured to adjust the G6 software compensation normalization value of any carrier upward when detecting that the RTWP power value of any carrier is smaller than or equal to a second preset threshold, where the second preset threshold is smaller than the first preset threshold, and the G6 software compensation normalization value of any carrier is smaller than a preset G6 initial value, so that the G6 outlet peak power of any carrier is smaller than or equal to zero.

In one possible design, the second adjusting module 703 is further configured to:

In one possible design, the first adjusting module 702 is specifically configured to:

In a possible design, the second adjusting module 703 is specifically configured to:

The apparatus provided in the embodiment of the present application may be configured to implement the technical solution of the method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again in the embodiment of the present application.

Alternatively, fig. 8 schematically provides one possible basic hardware architecture of an anti-saturation device for a receiver uplink as described herein.

Referring to fig. 8, an anti-saturation device 800 for a receiver uplink includes at least one processor 801 and a communication interface 803. Further optionally, a memory 802 and a bus 804 may also be included.

The anti-saturation device 800 of the uplink of the receiver may be the above-mentioned processor, and the application is not limited thereto. In the anti-saturation device 800 of the uplink of the receiver, the number of the processors 801 may be one or more, and fig. 8 only illustrates one of the processors 801. Alternatively, the processor 801 may be a CPU, GPU, or DSP. If the receiver uplink anti-saturation device 800 has multiple processors 801, the types of the multiple processors 801 may be different, or may be the same. Optionally, the plurality of processors 801 of the anti-saturation device 800 of the receiver uplink may also be integrated as a multi-core processor.

Memory 802 stores computer instructions and data; the memory 802 may store computer instructions and data required to implement the receiver uplink anti-saturation methods provided herein, e.g., the memory 802 stores instructions for implementing the steps of the receiver uplink anti-saturation methods described above. The memory 802 may be any one or any combination of the following storage media: nonvolatile memory (e.g., Read Only Memory (ROM), Solid State Disk (SSD), hard disk (HDD), optical disk), volatile memory.

The communication interface 803 may provide information input/output for the at least one processor. Any one or any combination of the following devices may also be included: a network interface (e.g., an ethernet interface), a wireless network card, etc. having a network access function.

Optionally, the communication interface 803 may also be used for the receiver uplink anti-saturation device 800 to communicate data with other computing devices or terminals.

Further alternatively, fig. 8 shows bus 804 as a thick line. A bus 804 may connect the processor 801 with the memory 802 and the communication interface 803. Thus, via bus 804, processor 801 may access memory 802 and may also interact with other computing devices or terminals using communication interface 803.

In the present application, the anti-saturation apparatus 800 of the receiver uplink executes computer instructions in the memory 802, so that the anti-saturation apparatus 800 of the receiver uplink implements the above-mentioned anti-saturation method of the receiver uplink provided in the present application, or so that the anti-saturation apparatus 800 of the receiver uplink deploys the above-mentioned anti-saturation device of the receiver uplink.

From the viewpoint of logical function division, for example, as shown in fig. 8, the memory 802 may include a detection module 701, a first adjustment module 702, and a second adjustment module 703. The inclusion herein merely refers to that the instructions stored in the memory may, when executed, implement the functionality of the detection module, the first adjustment module and the second adjustment module, respectively, and is not limited to a physical structure.

In addition, the above-mentioned receiver uplink anti-saturation device may be implemented by software as in fig. 8, or may be implemented by hardware as a hardware module or as a circuit unit.

A computer-readable storage medium is provided, the computer program product comprising computer instructions that instruct a computing device to perform the above-described receiver uplink anti-saturation method provided herein.

The present application provides a chip comprising at least one processor and a communication interface providing information input and/or output for the at least one processor. Further, the chip may also include at least one memory for storing computer instructions. The at least one processor is configured to invoke and execute the computer instructions to perform the above-described method for preventing saturation of the uplink of a receiver provided by the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Claims

1. A method for receiver uplink anti-saturation, comprising:

the method comprises the steps that a radio remote unit RRU of a base station is powered on and started, and after carriers are established, the power value of the total broadband receiving power RTWP of each carrier is detected by uplink power control with preset time as a period;

2. The method of claim 1, wherein the preset G6 initial value is determined by:

3. The method of claim 1, wherein the adjusting the software compensation normalization value of G6 for the any one carrier downward to make the G6 outlet peak power of the any one carrier less than or equal to zero comprises:

4. The method of claim 1, wherein the adjusting the software compensation normalization value of G6 for the any one carrier upward to make the G6 peak exit power of the any one carrier less than or equal to zero comprises:

5. The method of claim 2, wherein the determining the preset G6 initial value according to the normalized gain scaling value, the radio frequency fixed attenuation value, and the gain variation introduced by the G3_4 outlet due to the bit width changing from the first preset value to the second preset value and the gain variation introduced by the G6 outlet due to the bit width changing from the third preset value to the fourth preset value comprises:

6. The method of claim 3, wherein the adjusting downward the G6 software compensated normalization value of the any one carrier according to the preset G6 initial value, the RTWP power value of the any one carrier, and the first preset threshold comprises:

7. The method as claimed in claim 4, wherein the adjusting upwards the G6 soft compensation normalization value of any one of the carriers according to the preset G6 initial value, the second preset threshold value and the RTWP power value of any one of the carriers comprises:

8. An apparatus for preventing saturation of a receiver uplink, comprising:

9. An anti-saturation apparatus for an uplink of a receiver, the apparatus comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method for anti-saturation of a receiver uplink as claimed in any one of claims 1 to 7.

10. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, implement the method of anti-saturation of a receiver uplink according to any one of claims 1 to 7.