CN114244382B - Signal processing method, device, equipment and readable storage medium - Google Patents
Signal processing method, device, equipment and readable storage medium Download PDFInfo
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- CN114244382B CN114244382B CN202111556251.4A CN202111556251A CN114244382B CN 114244382 B CN114244382 B CN 114244382B CN 202111556251 A CN202111556251 A CN 202111556251A CN 114244382 B CN114244382 B CN 114244382B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
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- H04J3/0635—Clock or time synchronisation in a network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the application provides a signal processing method, a signal processing device, a signal processing apparatus and a readable storage medium, wherein in response to receiving a first signal in a first time slot, whether the first signal meets a first preset condition is judged, and if the first signal meets the first preset condition, a synchronization signal is transmitted in a second time slot, wherein the second time slot is a time slot which is adjacent to the first time slot and is behind the first time slot. And if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition. The first signal meets a second preset condition, and a stop signal is transmitted in a second time slot. The first preset condition comprises that the first signal is a synchronous signal, the second preset condition comprises that the first signal is not a service signal, the synchronous signal is a synchronous frame with the time length smaller than the preset time slot duration, and the stop signal comprises a synchronous frame with the time length equal to the time slot duration.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal processing method, an apparatus, a device, and a readable storage medium.
Background
In a communication system, signals are affected by environmental noise, co-channel interference and hardware (such as a phase-locked loop, a voltage-controlled crystal oscillator, etc.) of equipment during transmission, forwarding and receiving, which often results in that service signals cannot be normally established. The same frequency interference includes different same frequency waves caused by the synchronization frame, and taking the forwarding station E1 as an example, the received synchronization frame performs the same frequency interference on the newly accessed service signal, so that the E1 cannot normally receive and forward the service signal. Therefore, how to avoid co-channel interference is an important way to improve the anti-interference capability of the equipment.
Disclosure of Invention
The application provides a signal processing method, a device, equipment and a readable storage medium, aiming at reducing signal interference, and the method comprises the following steps:
a signal processing method, comprising:
responding to a first signal received in a first time slot, and judging whether the first signal meets a first preset condition, wherein the first preset condition comprises that the first signal is a synchronous signal, and the synchronous signal is a synchronous frame of which the time length is less than the preset time slot duration;
if the first signal meets the first preset condition, transmitting a synchronous signal in a second time slot, wherein the second time slot is a time slot which is adjacent to the first time slot and is behind the first time slot;
if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition; the second preset condition comprises that the first signal is not a service signal;
and if the first signal meets the second preset condition, transmitting a stop signal in the second time slot, wherein the stop signal comprises a synchronous frame with the time length equal to the time length of the time slot.
Optionally, the method further comprises:
and if the first signal does not meet the second preset condition, transmitting a target service signal in the second time slot, wherein the target service signal is obtained by analyzing the first signal.
Optionally, the transmitting the synchronization signal in the second time slot includes:
and transmitting a synchronization signal in the first time section of the second time slot, wherein the time length of the first time section of the arbitrary time slot is equal to the time length of the synchronization signal.
Optionally, the determining whether the first signal satisfies a first preset condition includes:
acquiring a signal energy value in a second time period of the first time slot as a first energy value, wherein the second time period of the first time slot is a time period except for the first time period of the first time slot in the first time slot;
judging whether the first energy value is larger than a preset energy threshold value or not;
if the first energy value is not larger than the preset energy threshold value, determining that the first signal meets the first preset condition;
and if the first energy value is larger than the preset energy threshold value, determining that the first signal does not meet the first preset condition.
Optionally, after the transmitting the stop signal, the method further includes:
entering a stop state, the stop state indicating that transmission of the signal is stopped; and releasing the stop state until the received signal does not meet the first preset condition and the second preset condition.
Optionally, the second preset condition further includes:
the stop state is not entered.
A signal processing apparatus comprising:
the first signal processing unit is used for responding to a first signal received in a first time slot and judging whether the first signal meets a first preset condition, wherein the first preset condition comprises that the first signal is a synchronous signal, and the synchronous signal is a synchronous frame with the time length smaller than the preset time slot duration;
a first signal transmitting unit, configured to transmit a synchronization signal in a second time slot if the first signal satisfies the first preset condition, where the second time slot is a time slot after the first time slot and adjacent to the first time slot;
the second signal processing unit is used for judging whether the first signal meets a second preset condition or not if the first signal does not meet the first preset condition; the second preset condition comprises that the first signal is not a traffic signal;
and the second signal transmitting unit is used for transmitting a stop signal in the second time slot if the first signal meets the second preset condition, wherein the stop signal comprises a synchronous frame with the time length equal to the time length of the time slot.
Optionally, the method further comprises:
and a third signal transmitting unit, configured to transmit a target service signal at the second time slot if the first signal does not satisfy the second preset condition, where the target service signal is obtained by analyzing the first signal.
A signal processing apparatus comprising: a memory and a processor;
the memory is used for storing programs;
the processor is configured to execute the program to implement the steps of the signal processing method.
A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the signal processing method.
It can be seen from the foregoing technical solutions that, in response to receiving a first signal in a first timeslot, a signal processing method, an apparatus, a device, and a readable storage medium provided in embodiments of the present application determine whether the first signal satisfies a first preset condition, and if the first signal satisfies the first preset condition, transmit a synchronization signal in a second timeslot, where the second timeslot is a timeslot after the first timeslot and adjacent to the first timeslot. And if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition or not. And if the first signal meets a second preset condition, transmitting a stop signal in a second time slot. In the method, the first predetermined condition includes that the first signal is a synchronization signal, and the second predetermined condition includes that the first signal is not a traffic signal. That is, if the first signal satisfies the first predetermined condition, the synchronization signal is continuously transmitted, and since the synchronization signal is a synchronization frame having a time length shorter than the predetermined time slot duration, and the stop signal includes a synchronization frame having a time length equal to the time slot duration, it can be seen that the synchronization signal is different from other signals (the traffic signal and the stop signal) in terms of time length, thereby ensuring the identifiability of the synchronization signal. If the first signal does not satisfy the first preset condition and satisfies the second preset condition, the first signal is not a synchronization signal or a service signal, which indicates that a signal interference phenomenon exists at the moment and the service signal cannot be obtained through analysis, and therefore, the stop signal is transmitted.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of an embodiment of a signal processing method according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a signal processing method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another specific implementation of a signal processing method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a signal processing apparatus according to an embodiment of 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 embodiment of the application provides a signal processing method applied to, but not limited to, a scene of distinguishing interference signals during signal transceiving. For example, signal forwarding devices process received signals with the purpose of distinguishing traffic signals from other long-lived synchronization signals.
Fig. 1 is a schematic flow chart of a signal processing method according to an embodiment of the present application, and as shown in fig. 1, the method includes:
s101, responding to the first signal received in the first time slot, and judging whether the first signal meets a first preset condition.
In this embodiment, the first time slot is any one time slot, the first preset condition includes that the first signal is a synchronization signal, and the synchronization signal is a synchronization frame whose time length is less than a preset time slot duration. It should be noted that the synchronization signal is transmitted in a transmission time period of any time slot, where the transmission time period is less than a preset duration of the time slot, that is, a time length of the synchronization signal is equal to a time length of the transmission time period. Since the sync signal is a sync frame having a time length smaller than a preset time slot duration, that is, the time length of the sync signal is different from the stop signal (defined below), and the sync frame is frame data with sync words, the sync signal is different from the service signal. Therefore, the synchronization signal is distinctive with respect to the traffic signal and the stop signal. The specific method for determining whether the first signal satisfies the first preset condition includes various methods, which can be seen in the following embodiments.
And S102, if the first signal meets a first preset condition, transmitting a synchronous signal in a second time slot.
In this embodiment, the second time slot is a time slot adjacent to the first time slot after the first time slot. The method for transmitting the synchronization signal in the second time slot comprises the following steps: the first signal is directly forwarded or a synchronization signal is generated and transmitted.
S103, if the first signal does not meet the first preset condition, whether the first signal meets a second preset condition is judged.
In this embodiment, the second preset condition includes that the first signal is not a traffic signal. The specific method for determining whether the first signal meets the second preset condition includes multiple methods, which can be referred to in the prior art, and this embodiment is not described in detail.
And S104, if the first signal meets a second preset condition, transmitting a stop signal in a second time slot.
In this embodiment, the stop signal includes a synchronization frame having a time length equal to the time length of the slot. I.e. the stop signal is a full frame signal.
It can be seen from the foregoing technical solutions that, in the signal processing method provided in this embodiment of the present application, in response to receiving a first signal in a first time slot, it is determined whether the first signal meets a first preset condition, and if the first signal meets the first preset condition, a synchronization signal is transmitted in a second time slot, where the second time slot is a time slot after the first time slot and adjacent to the first time slot. And if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition or not. And if the first signal meets a second preset condition, transmitting a stop signal in a second time slot. In the method, the first preset condition includes that the first signal is a synchronization signal, and the second preset condition includes that the first signal is not a traffic signal. That is, if the first signal satisfies the first predetermined condition, the synchronization signal is continuously transmitted, and since the synchronization signal is a synchronization frame having a time length smaller than the predetermined time slot duration, and the stop signal includes a synchronization frame having a time length equal to the time slot duration, it can be seen that the synchronization signal is a synchronization frame different from the stop signal in terms of time length, thereby ensuring the distinctiveness of the synchronization signal from other signals. If the first signal does not satisfy the first preset condition and satisfies the second preset condition, the first signal is not a synchronization signal or a service signal, which indicates that a signal interference phenomenon exists at the moment and the service signal cannot be obtained through analysis, and therefore, the stop signal is transmitted.
Fig. 2 is a schematic flowchart of a specific implementation method of a signal processing method provided in an embodiment of the present application, and as shown in fig. 2, the method includes:
s201, in response to the first signal received in the first time slot, acquiring a signal energy value in a second time period of the first time slot as a first energy value.
In this embodiment, the second period of the first time slot is a period of the first time slot other than the first period of the first time slot. The first time segment of any time slot is a transmission time segment, that is, the time length of the first time segment of any time slot is equal to the time length of the synchronization signal.
S202, judging whether the first energy value is larger than a preset energy threshold value.
S203, if the first energy value is not larger than the preset energy threshold value, determining that the first signal meets a first preset condition.
In this embodiment, the first preset condition includes that the first signal is a synchronization signal.
It should be noted that the synchronization signal is a synchronization frame that is sent in a first time period of any timeslot and has a time length smaller than a preset time length of the timeslot. In the time slot for receiving the synchronous signal, the signal energy value of the time segment (second time segment) except the first time segment is the background noise value. Therefore, whether the received first signal is a synchronization signal can be determined by the first energy value and the preset energy threshold, and it is obvious that if the first energy value is not greater than the preset energy threshold, the signal strength is small in the second time period, and thus it is determined that the first signal is a synchronization signal. The preset energy threshold is obtained according to the background noise value, or the preset energy threshold is obtained according to a reference value, wherein the reference value is a signal energy value of a second time period in a time slot for receiving the synchronization signal for the first time.
And S204, transmitting a synchronous signal in the first time period of the second time slot.
In this embodiment, the time length of the first time segment of any time slot is equal to the time length of the synchronization signal, that is, in the first time segment of the second time slot, the transmission of the synchronization signal is a long-time transmission of the synchronization signal in the first time segment of the second time slot. Wherein the second time slot is a time slot adjacent to the first time slot after the first time slot.
S205, if the first energy value is larger than a preset energy threshold value, it is determined that the first signal does not meet a first preset condition.
S206, judging whether the first signal meets a second preset condition.
In this embodiment, the second preset condition includes that the first signal is not a traffic signal and has not entered a stop state. A specific method for determining whether any signal satisfies the second preset condition is referred to in the prior art.
And S207, if the first signal does not meet the second preset condition, transmitting the target service signal in the second time slot.
In this embodiment, the target service signal is obtained by analyzing the first signal. The method for analyzing the first signal to obtain the target service signal and transmitting the target service signal refers to the prior art.
And S208, if the first signal meets a second preset condition, transmitting a stop signal in a second time slot.
In this embodiment, the stop signal includes a synchronization frame having a time length equal to the time length of the slot.
And S209, entering a stop state until the received signal does not meet the first preset condition and the second preset condition, and releasing the stop state.
Wherein the stop state indicates that the transmission of the signal is stopped.
It can be seen from the foregoing technical solutions that, in the signal processing method provided in this embodiment of the present application, if the first signal satisfies the first preset condition, the synchronization signal is continuously transmitted, because the synchronization signal is a synchronization frame whose time length is less than the preset time slot duration, and the stop signal includes a synchronization frame whose time length is equal to the time slot duration, it can be seen that the synchronization signal is a synchronization frame that is different from the stop signal in time length, so that the distinctiveness of the synchronization signal from other signals (including the stop signal and/or the traffic signal) is ensured. If the first signal does not satisfy the first preset condition and satisfies the second preset condition, the first signal is not a synchronization signal or a service signal, which indicates that a signal interference phenomenon exists at the moment and the service signal cannot be obtained through analysis, and therefore, the stop signal is transmitted.
It should be noted that fig. 2 is only an optional specific implementation method of a signal processing method provided in the embodiment of the present application, and the present application also includes other specific implementation methods, for example, the method for determining whether the first signal is a synchronization signal includes multiple types, and for example, the specific implementation method for entering the stop state after the stop signal is transmitted in the second time slot includes multiple types. For another example, a specific application scenario selectable by the signal processing method provided in the embodiment of the present application is as follows: and a signal receiving and transmitting process of the two-way ad hoc network equipment in the narrow-band two-way ad hoc network. Taking the repeater as a two-way ad hoc network device as an example, the repeater is used for receiving and transmitting a service signal transmitted by a terminal (such as a mobile station) through two signal transceiving channels (hereinafter referred to as signal channels) in the service signal transmission process, thereby completing the forwarding of the service signal and achieving the purposes of increasing the communication distance and expanding the coverage range.
It should be noted that, in the application of the narrowband ad hoc network technology, the repeater station, as a two-way ad hoc network device, needs to keep the synchronous transceiving of two-way signals in the process of transceiving signals. That is, the first signal channel and the second signal channel of the repeater have the same reception time slot and the same transmission time slot (referred to as two-way signal synchronous transmission and reception). Taking a target forwarding station as an example, after a service is established in a first signal channel of the target forwarding station, a synchronization frame (also called a synchronization signal) is sent in a long time through a second signal channel to realize synchronous transceiving of two-way signals, but because a sending time slot of the target forwarding station is to be in the same time slot as a receiving time slot of an adjacent forwarding station, the adjacent forwarding station receives an interference signal (also called a synchronization frame sent in a long time slot by the target forwarding station) with different frequency and different wave from the service signal in the receiving time slot, and thus cannot normally receive the service signal. Therefore, the signal processing method provided by the embodiment of the application is applied to the repeater, and aims to identify the service signal and the synchronization signal in time, improve the anti-interference capability of a signal path, and enhance the stability of signal receiving and transmitting.
Fig. 3 illustrates a schematic flow chart of a specific implementation method of a signal processing method provided in an embodiment of the present application, where the flow illustrated in fig. 3 takes a narrowband two-way ad hoc network including a first forwarding station and a second forwarding station as an example, where the first forwarding station and the second forwarding station satisfy a preset communication condition, and the preset communication condition includes: the communication distance is smaller than the preset distance threshold value, namely, the first forwarding station and the second forwarding station are in the communication coverage range of the other party. The signal channel X of the first repeater station comprises a signal channel X1 and a signal channel X2, and the signal channel Y of the second repeater station comprises a signal channel Y1 and a signal channel Y2. It should be noted that, the timeslot n (n is greater than 1) is a timeslot that is adjacent to the timeslot n-1 after the timeslot n-1, and the time length of each timeslot is the same and is equal to the preset timeslot duration.
As shown in fig. 3, a specific implementation manner of the signal processing method provided in this embodiment includes:
s301, the first forwarding station responds to the first traffic signal received by X1 in the time slot 1, and transmits the first traffic signal in the time slot 2 through X1.
It should be noted that, the method for transmitting the first traffic signal in time slot 2 through X1 is referred to in the prior art.
S302, the first transmitting station determines that the preset synchronous signal transmitting condition is met, and transmits the synchronous signal in the first time period of the time slot 2 for a long time through X2.
In this embodiment, the synchronization signal transmission condition includes that X2 does not receive a signal in time slot 1, or that X2 receives a signal in time slot 1 as a synchronization signal.
In this embodiment, the duration of the first time period is less than the duration of the time slot (including the time slot 2, and the duration of each time slot is preset and consistent). For example, the duration of the slot is 30ms, and the first period is the first 25ms, i.e. the 25ms long synchronization signal from the beginning of the slot to the slot.
In this embodiment, the synchronization signal is a synchronization frame whose time length is less than the time length of the time slot (in this embodiment, the time length of the synchronization signal is the time length of the first time slot), the synchronization frame is a signal carrying a preset synchronization word, and a specific synchronization signal generation and transmission method refers to the prior art.
It should be noted that after the first service signal is transmitted in the time slot 2 by the X1, it indicates that the service is established by the X1, and the time slot 2 is a transmission time slot of the first forwarding station, at this time, the X1 is in a busy state of the service. When X1 is in the busy traffic state, the first transmitting station transmits the small frame data with the synchronous words as the synchronous signals in the transmitting time slot of the first transmitting station through X1.
Based on this, the adjacent repeater (including but not limited to the second repeater) will receive the first traffic signal and the synchronization signal in the time slot 2, thereby determining that the time slot 2 is the receiving time slot of the adjacent repeater. The mobile station (terminal equipment under the adjacent repeater) automatically adjusts to the time slot 2 to transmit the service signal, so that the adjacent repeater can receive the service signal.
Under the condition that no mobile station sends a service signal, the first signal channel of the adjacent forwarding station receives the first service signal to realize the forwarding of the service signal, and the second signal channel receives the synchronization signal and continues to transmit the synchronization signal.
Under the condition that the mobile station sends the service signal, the first signal channel of the adjacent repeater receives the first service signal to realize the retransmission of the service signal, and the second signal channel receives the synchronous signal and also receives the service signal, namely receives signals of different waves with the same frequency.
Specifically, taking an adjacent repeater as a second repeater as an example, fig. 3 further illustrates a signal processing flow after the second repeater receives a signal in a receiving time slot, as follows:
s303, the second forwarding station responds to the signal channel Y to receive the first signal in the time slot 2, and obtains a signal energy value in the second time period of the time slot 2 as the first energy value.
In this embodiment, Y includes Y1 and Y2. The second period of any slot is a period other than the first period of that slot. In the above example, the second time period of the timeslot 2 is from 26ms in the timeslot 2 to the end of the timeslot.
As shown in fig. 3, the second repeater station obtains the signal energy value N1 in the second period of time slot 2 in response to the first signal C1 being received by Y1 in time slot 2. The second repeater station obtains a signal energy value N2 in the second time period of time slot 2 in response to Y2 receiving the first signal C2 in time slot 2.
S304, the second forwarding station judges whether the first energy value is larger than a preset energy threshold value.
As shown in fig. 3, the second forwarding station respectively determines whether N1 and N2 are greater than a preset energy threshold, in this embodiment, the preset energy threshold is a preset small value, and specifically, may obtain the first energy value according to the synchronization signal, for example, obtain the first energy value when it is determined that the first signal is the synchronization signal, as the preset energy threshold.
S305, if the first energy value is not larger than the preset energy threshold, the second repeater determines that the first signal is a synchronous signal, and sends the synchronous signal for a long time in the first time period of the time slot 3 through Y.
In this embodiment, since the synchronization signal is a synchronization frame having a time length equal to that of the first time period and the synchronization signal is transmitted in the first time period of the time slot 2, according to a general situation, it is assumed that the time length of a signal (a traffic signal or a stop signal) other than the synchronization signal is greater than that of the first time period, and therefore, if the first energy value is not greater than the preset energy threshold, it is determined that the first preset condition is satisfied, that is, the first signal is the synchronization signal.
Specifically, as shown in fig. 3, if the second repeater determines that N1 is not greater than the preset energy threshold, the synchronization signal is transmitted for a long time in the first time period of the time slot 3 through Y1.
S306, if the first energy value is larger than the preset energy threshold value, the second forwarding station analyzes the first signal to obtain a signal judgment result.
As described above, when the first energy value is greater than the preset energy threshold, it is determined that the first signal does not satisfy the first preset condition, that is, the first signal is not a synchronization signal.
Specifically, as shown in fig. 3, if the second forwarding station determines that N2 is greater than the preset energy threshold, Y2 is analyzed, and a signal determination result is obtained. In this embodiment, the signal determination result indicates whether the first signal is a service signal. The specific resolution process can be found in the prior art.
It should be noted that, if the signal determination result indicates that the first signal is not the traffic signal, it indicates that the first signal is a mixed signal, and the mixed signal includes a synchronization signal and a traffic signal, or the first signal is a stop signal.
And S307, if the signal judgment result indicates that the first signal is a service signal, the second forwarding station transmits a second service signal in the time slot 3 through Y.
In this embodiment, the signal determination result indicates that the first signal is a service signal, that is, does not satisfy the second preset condition, and the second service signal is a target service signal obtained by analyzing the first signal. That is, at this time, no synchronization signal interferes with the service signal reception, and the mobile station service is normally established and forwarded.
Specifically, as shown in fig. 3, if the signal determination result indicates that C2 is a service signal, the second forwarding station transmits a second service signal in time slot 3 through Y2, and the second service signal is obtained through C2 analysis. Analytical methods are known from the prior art.
And S308, if the signal judgment result indicates that the first signal is not a service signal and the signal state of the Y is not a stop state, the second forwarding station sends a stop signal in the time slot 3 through the Y for a long time.
In this embodiment, the signal determination result indicates that the first signal is not a service signal, that is, meets a second preset condition, and the stop signal is a synchronous frame whose time length is equal to the time length of the time slot, that is, a full frame signal.
Specifically, as shown in fig. 3, if the signal determination result indicates that C2 is not a traffic signal and the signal status of Y2 is not a stop status, the second relay station transmits a stop signal in time slot 3 through Y2.
S309, after the second repeater transmits the stop signal for the long time in time slot 3 by Y, the signal status of the flag Y is the stop status.
Specifically, as shown in fig. 3, after the second repeater transmits the stop signal for a long time in the time slot 3 through the signal Y2, the signal state of the flag Y2 is in the stop state. It should be noted that, the signal channel is marked as a stop state, which indicates that the signal channel enters the stop state, and the stop state indicates to stop transmitting any signal until the received signal does not satisfy the first preset condition and the second preset condition, and then enters the service state.
And S310, if the signal judgment result indicates that the first signal is not a service signal and the signal state of Y is a stop state, Y stops transmitting signals in a time slot 3 and waits for receiving signals.
Specifically, as shown in fig. 3, C2 is not a traffic signal, and the signal state of Y2 is a stop state, and Y2 stops transmitting signals in time slot 3.
That is, the method determines that the mobile station service is accessed at the repeater, sends a signal synchronization frame (also called stop signal) of complete time slot data at the next transmission time slot to notify the adjacent repeater, and then stops sending the synchronization frame (including the synchronization signal and the stop signal) until the received signal is the service signal, thereby forwarding the service signal and establishing a service channel.
It can be seen from the foregoing technical solutions that, when the signal processing method provided by the present application is applied to a scenario where a relay station receives and transmits a signal, at least the following beneficial effects are achieved:
after the first and second forwarding stations forward the service signal in time slot 2 through X1, the first and second forwarding stations transmit the synchronization signal in the first time period of time slot 2 through X2, so as to implement synchronous transceiving of the two signal channels, that is, time slot alignment.
Secondly, since the time length of the synchronization signal, that is, the time length of the first time segment is less than the time length of any time slot (therefore, the synchronization signal is also called a small frame synchronization frame), compared to the traffic signal of a full frame and the full frame synchronization frame transmitted in the prior art, the time slot of the received small frame synchronization frame has a distinct energy characteristic, so that when the repeater receives a signal in any channel, it can identify the nature of the received signal through energy detection, for example, the signal is a synchronization signal, the signal is a traffic signal, and the signal is another signal (a mixed signal of the traffic signal and the synchronization signal or a stop signal).
Thirdly, because the stop state is entered after the stop signal is sent until the received signal is a service signal, the adjacent forwarding stations and other forwarding stations in the forwarding link can both realize the stop state and can both stop transmitting the synchronous frame, thereby avoiding the situation that the synchronous signal always interferes with the service signal, and thus improving the anti-interference capability of the forwarding stations.
Fourthly, whether the received signal is the synchronous signal or not can be confirmed only by energy detection, and if not, the received signal is the service signal only by conventional service signal analysis.
And fifthly, the scheme is applied to the forwarding station, and the forwarding station can be compatible with a non-customized terminal (such as a mobile station), so that the terminal is not required to be modified, and the normal use of the service function of the terminal is ensured.
It should be noted that, in this embodiment, only the two-way ad hoc network device is taken as an example of the forwarding station, and the method may also be applied to other two-way ad hoc network devices, so as to at least achieve the above beneficial effects.
Fig. 4 shows a schematic structural diagram of a signal processing apparatus provided in an embodiment of the present application, and as shown in fig. 4, the apparatus may include:
a first signal processing unit 401, configured to determine, in response to receiving a first signal in a first time slot, whether the first signal meets a first preset condition, where the first preset condition includes that the first signal is a synchronization signal, and the synchronization signal is a synchronization frame whose time length is smaller than a preset time slot duration;
a first signal transmitting unit 402, configured to transmit a synchronization signal in a second time slot if the first signal satisfies the first preset condition, where the second time slot is a time slot after the first time slot and adjacent to the first time slot;
a second signal processing unit 403, configured to determine whether the first signal satisfies a second preset condition if the first signal does not satisfy the first preset condition; the second preset condition comprises that the first signal is not a traffic signal;
a second signal transmitting unit 404, configured to transmit a stop signal in the second time slot if the first signal meets the second preset condition, where the stop signal includes a synchronization frame with a time length equal to the time length of the time slot.
Optionally, the method further comprises:
and a third signal transmitting unit, configured to transmit a target service signal at the second time slot if the first signal does not satisfy the second preset condition, where the target service signal is obtained by analyzing the first signal.
Optionally, the first signal transmitting unit is configured to transmit the synchronization signal in the second time slot, and includes: the first signal transmitting unit is specifically configured to: and transmitting a synchronization signal in the first time segment of the second time slot, wherein the time length of the first time segment of the arbitrary time slot is equal to that of the synchronization signal.
Optionally, the first signal processing unit is configured to determine whether the first signal satisfies a first preset condition, and includes:
acquiring a signal energy value in a second time period of the first time slot as a first energy value, wherein the second time period of the first time slot is a time period except for the first time period of the first time slot in the first time slot;
judging whether the first energy value is larger than a preset energy threshold value or not;
if the first energy value is not greater than the preset energy threshold, determining that the first signal meets the first preset condition;
and if the first energy value is larger than the preset energy threshold value, determining that the first signal does not meet the first preset condition.
Optionally, the wireless communication device further comprises a state updating unit, configured to enter a stop state after transmitting a stop signal, where the stop state indicates that transmission of the signal is stopped; and releasing the stop state until the received signal does not meet the first preset condition and the second preset condition.
Optionally, the second preset condition further includes: the stop state is not entered.
Fig. 5 shows a schematic structural diagram of the signal processing apparatus, which may include: at least one processor 501, at least one communication interface 502, at least one memory 503, and at least one communication bus 504;
in the embodiment of the present application, the number of the processor 501, the communication interface 502, the memory 503 and the communication bus 504 is at least one, and the processor 501, the communication interface 502 and the memory 503 complete the communication with each other through the communication bus 504;
the processor 501 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement embodiments of the present invention, etc.;
the memory 503 may include a high-speed RAM memory, and may further include a non-volatile memory (non-volatile memory) or the like, such as at least one disk memory;
the memory stores a program, and the processor can execute the program stored in the memory, so as to realize the steps of the signal processing method provided by the embodiment of the application, as follows:
a method of signal processing, comprising:
responding to a first signal received in a first time slot, and judging whether the first signal meets a first preset condition, wherein the first preset condition comprises that the first signal is a synchronous signal, and the synchronous signal is a synchronous frame of which the time length is less than the preset time slot duration;
if the first signal meets the first preset condition, transmitting a synchronous signal in a second time slot, wherein the second time slot is a time slot which is adjacent to the first time slot and is behind the first time slot;
if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition or not; the second preset condition comprises that the first signal is not a traffic signal;
and if the first signal meets the second preset condition, transmitting a stop signal in the second time slot, wherein the stop signal comprises a synchronous frame with the time length equal to the time length of the time slot.
Optionally, the method further comprises:
and if the first signal does not meet the second preset condition, transmitting a target service signal in the second time slot, wherein the target service signal is obtained by analyzing the first signal.
Optionally, transmitting the synchronization signal in the second time slot includes:
and transmitting a synchronization signal in the first time segment of the second time slot, wherein the time length of the first time segment of the arbitrary time slot is equal to that of the synchronization signal.
Optionally, the determining whether the first signal satisfies a first preset condition includes:
acquiring a signal energy value in a second time period of the first time slot as a first energy value, wherein the second time period of the first time slot is a time period except for the first time period of the first time slot in the first time slot;
judging whether the first energy value is larger than a preset energy threshold value or not;
if the first energy value is not larger than the preset energy threshold value, determining that the first signal meets the first preset condition;
and if the first energy value is larger than the preset energy threshold value, determining that the first signal does not meet the first preset condition.
Optionally, after the step of transmitting the stop signal, the method further includes:
entering a stop state, the stop state indicating that transmission of the signal is stopped; and releasing the stop state until the received signal does not meet the first preset condition and the second preset condition.
Optionally, the second preset condition further includes:
the stop state is not entered.
The embodiment of the present application further provides a readable storage medium, where the readable storage medium may store a computer program adapted to be executed by a processor, and when the computer program is executed by the processor, the computer program implements the steps of a signal processing method provided in the embodiment of the present application, as follows:
a signal processing method, comprising:
responding to a first signal received in a first time slot, and judging whether the first signal meets a first preset condition, wherein the first preset condition comprises that the first signal is a synchronous signal, and the synchronous signal is a synchronous frame of which the time length is less than the preset time slot duration;
if the first signal meets the first preset condition, transmitting a synchronous signal in a second time slot, wherein the second time slot is a time slot which is adjacent to the first time slot and is behind the first time slot;
if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition; the second preset condition comprises that the first signal is not a service signal;
and if the first signal meets the second preset condition, transmitting a stop signal in the second time slot, wherein the stop signal comprises a synchronous frame with the time length equal to the time length of the time slot.
Optionally, the method further comprises:
and if the first signal does not meet the second preset condition, transmitting a target service signal in the second time slot, wherein the target service signal is obtained by analyzing the first signal.
Optionally, transmitting the synchronization signal in the second time slot includes:
and transmitting a synchronization signal in the first time section of the second time slot, wherein the time length of the first time section of the arbitrary time slot is equal to the time length of the synchronization signal.
Optionally, the determining whether the first signal satisfies a first preset condition includes:
acquiring a signal energy value in a second time period of the first time slot as a first energy value, wherein the second time period of the first time slot is a time period except for the first time period of the first time slot in the first time slot;
judging whether the first energy value is larger than a preset energy threshold value or not;
if the first energy value is not greater than the preset energy threshold, determining that the first signal meets the first preset condition;
and if the first energy value is larger than the preset energy threshold value, determining that the first signal does not meet the first preset condition.
Optionally, after the step of transmitting the stop signal, the method further includes:
entering a stop state, the stop state indicating that transmission of the signal is stopped; and releasing the stop state until the received signal does not meet the first preset condition and the second preset condition.
Optionally, the second preset condition further includes:
the stop state is not entered.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A signal processing method, comprising:
responding to a first signal received in a first time slot, and judging whether the first signal meets a first preset condition, wherein the first preset condition comprises that the first signal is a synchronous signal, and the synchronous signal is a synchronous frame of which the time length is less than the preset time slot duration;
if the first signal meets the first preset condition, transmitting a synchronous signal in a second time slot, wherein the second time slot is a time slot which is adjacent to the first time slot and is behind the first time slot;
if the first signal does not meet the first preset condition, judging whether the first signal meets a second preset condition; the second preset condition comprises that the first signal is not a traffic signal;
and if the first signal meets the second preset condition, transmitting a stop signal in the second time slot, wherein the stop signal comprises a synchronous frame with the time length equal to the time length of the time slot.
2. The method of claim 1, further comprising:
and if the first signal does not meet the second preset condition, transmitting a target service signal in the second time slot, wherein the target service signal is obtained by analyzing the first signal.
3. The method of claim 1, wherein transmitting the synchronization signal in the second time slot comprises:
and transmitting a synchronization signal in the first time section of the second time slot, wherein the time length of the first time section of any time slot is equal to that of the synchronization signal.
4. The method of claim 3, wherein the determining whether the first signal satisfies a first predetermined condition comprises:
acquiring a signal energy value in a second time period of the first time slot as a first energy value, wherein the second time period of the first time slot is a time period except for the first time period of the first time slot in the first time slot;
judging whether the first energy value is larger than a preset energy threshold value or not;
if the first energy value is not greater than the preset energy threshold, determining that the first signal meets the first preset condition;
and if the first energy value is larger than the preset energy threshold value, determining that the first signal does not meet the first preset condition.
5. The method of claim 1, wherein after transmitting the stop signal, further comprising:
entering a stop state, the stop state indicating that transmission of the signal is stopped; and releasing the stop state until the received signal does not meet the first preset condition and the second preset condition.
6. The method of claim 5, wherein the second preset condition further comprises:
the stop state is not entered.
7. A signal processing apparatus, characterized by comprising:
the first signal processing unit is used for responding to a first signal received in a first time slot and judging whether the first signal meets a first preset condition, wherein the first preset condition comprises that the first signal is a synchronous signal, and the synchronous signal is a synchronous frame with the time length smaller than the preset time slot duration;
a first signal transmitting unit, configured to transmit a synchronization signal in a second time slot if the first signal satisfies the first preset condition, where the second time slot is a time slot after the first time slot and adjacent to the first time slot;
the second signal processing unit is used for judging whether the first signal meets a second preset condition or not if the first signal does not meet the first preset condition; the second preset condition comprises that the first signal is not a service signal;
and the second signal transmitting unit is used for transmitting a stop signal in the second time slot if the first signal meets the second preset condition, wherein the stop signal comprises a synchronous frame with the time length equal to the time length of the time slot.
8. The apparatus of claim 7, further comprising:
and a third signal transmitting unit, configured to transmit a target service signal at the second time slot if the first signal does not satisfy the second preset condition, where the target service signal is obtained by analyzing the first signal.
9. A signal processing apparatus characterized by comprising: a memory and a processor;
the memory is used for storing programs;
the processor, which executes the program, realizes the steps of the signal processing method according to any one of claims 1 to 6.
10. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the signal processing method according to any one of claims 1 to 6.
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| CN102916775A (en) * | 2012-10-11 | 2013-02-06 | 广州海格通信集团股份有限公司 | Wireless wideband data transmission method and system |
| CN104427520A (en) * | 2013-08-26 | 2015-03-18 | 普天信息技术研究院有限公司 | Adjacent region detection method under co-channel interference |
| WO2020129790A1 (en) * | 2018-12-19 | 2020-06-25 | 日本電信電話株式会社 | Radio communication system, access point device, radio station device, and radio communication method |
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| JP6478613B2 (en) * | 2014-12-16 | 2019-03-06 | 株式会社東芝 | Reception device, communication system, and interference detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102916775A (en) * | 2012-10-11 | 2013-02-06 | 广州海格通信集团股份有限公司 | Wireless wideband data transmission method and system |
| CN104427520A (en) * | 2013-08-26 | 2015-03-18 | 普天信息技术研究院有限公司 | Adjacent region detection method under co-channel interference |
| WO2020129790A1 (en) * | 2018-12-19 | 2020-06-25 | 日本電信電話株式会社 | Radio communication system, access point device, radio station device, and radio communication method |
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