CN114759950A - Signal processing method, signal processing apparatus, communication device, and medium - Google Patents
Signal processing method, signal processing apparatus, communication device, and medium Download PDFInfo
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- CN114759950A CN114759950A CN202011597232.1A CN202011597232A CN114759950A CN 114759950 A CN114759950 A CN 114759950A CN 202011597232 A CN202011597232 A CN 202011597232A CN 114759950 A CN114759950 A CN 114759950A
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- H—ELECTRICITY
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- 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
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
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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
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- 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
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Abstract
The application relates to a signal processing method, a signal processing device, communication equipment and a medium, which relate to the technical field of signal processing, wherein the signal processing method acquires frequency hopping information of a narrowband frequency hopping signal and determines a first time-frequency resource position required to be occupied by the narrowband frequency hopping signal according to the frequency hopping information; acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal; and under the condition that the second time frequency resource position needs to be punched, determining a punching position on the second time frequency resource position according to the first time frequency resource position and the second time frequency resource position, and punching on the second time frequency resource position according to the punching position. The embodiment of the application provides a mode of fusing a narrow-band frequency hopping signal and a wide-band fixed-frequency signal, so that the wide-band signal and the narrow-band signal can use frequency spectrum resources in a non-orthogonal mode, and the utilization rate of the frequency spectrum resources is improved. And the method has the advantages of large coverage distance, high communication speed, strong anti-interference capability and the like.
Description
Technical Field
The present application relates to the field of signal processing technologies, and in particular, to a signal processing method, an apparatus, a communication device, and a medium.
Background
The broadband communication method can provide a high-rate and low-delay communication service, but the coverage distance is limited. The narrow-band communication mode can provide long-distance coverage, but the communication speed is relatively low, and the communication time delay is relatively large. In order to achieve a better communication effect, it is a hot research direction in the field to merge a broadband communication mode and a narrowband communication mode.
In practical applications, fusing a broadband communication mode and a narrowband communication mode generally means: orthogonal networking is performed on the narrowband frequency hopping signal and the wideband frequency fixing signal, wherein, as shown in fig. 1, a schematic diagram of orthogonal networking of the narrowband frequency hopping signal and the wideband frequency fixing signal is shown. As can be seen from fig. 1, the narrowband frequency hopping signal is located in the low frequency region of the spectrum resource, and the wideband frequency hopping signal is distributed in the high frequency region of the spectrum resource. The networking mode has low frequency spectrum utilization rate.
Disclosure of Invention
In view of the above, it is necessary to provide a signal processing method, an apparatus, a communication device and a medium for solving the above technical problems.
A signal processing method is applied to target communication equipment, the target communication equipment can be used for sending a narrowband frequency hopping signal and a broadband frequency fixing signal, and the frequency band occupied by the narrowband frequency hopping signal and the frequency band occupied by the broadband frequency fixing signal are overlapped, the method comprises the following steps:
acquiring frequency hopping information of the narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and under the condition that the second time frequency resource position needs to be punched, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position.
In one embodiment, the determining, according to the frequency hopping information, a first time-frequency resource location that needs to be occupied by the narrowband frequency hopping signal includes:
determining a time domain resource position and a frequency domain resource position which are required to be occupied by the narrowband frequency hopping signal according to the frequency hopping table and the timing parameter;
and determining the first time-frequency resource position according to the time domain resource position and the frequency domain resource position.
In one embodiment, before determining the puncturing position on the second time-frequency resource position according to the first time-frequency resource position and the second time-frequency resource position, the method further includes:
detecting whether the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other according to the first time frequency resource position and the second time frequency resource position;
and if the narrowband frequency hopping signal and the broadband fixed frequency signal are interfered with each other, determining that the position of the second time frequency resource needs to be punched.
In one embodiment, puncturing at the second time-frequency resource position according to the puncturing position includes:
acquiring a target subcarrier positioned at a punching position on a second time-frequency resource position;
and carrying out silencing treatment on the target subcarrier.
In one embodiment, the method further comprises:
the frame length of the signal frame of the narrowband frequency hopping signal is integral multiple of the frame length of the signal frame of the broadband fixed frequency signal;
the time slot length of the signal frame of the narrowband frequency hopping signal is integral multiple of the time slot length of the signal frame of the wideband frequency-fixing signal.
In one embodiment, the method further comprises:
and modifying the uplink time slot and the downlink time slot of the punching position according to the uplink time slot and the downlink time slot of the narrowband frequency hopping signal.
In one embodiment, the method further comprises:
and sending the punching position to the signal receiving equipment so that the signal receiving equipment can receive the narrowband frequency hopping signal at the punching position.
A signal processing device is applied to a target communication device, the target communication device can be used for sending a narrowband frequency hopping signal and a broadband frequency fixing signal, and the frequency band occupied by the narrowband frequency hopping signal and the frequency band occupied by the broadband frequency fixing signal are overlapped, the device comprises:
the first acquisition module is used for acquiring frequency hopping information of the narrowband frequency hopping signal and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
the second acquisition module is used for acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and the processing module is used for determining the punching position on the second time-frequency resource position according to the first time-frequency resource position and the second time-frequency resource position under the condition that the second time-frequency resource position needs punching processing, and punching on the second time-frequency resource position according to the punching position.
A communication device comprising a memory and a processor, the memory storing a computer program, the processor when executing the computer program implementing the steps of:
acquiring frequency hopping information of the narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and under the condition that the second time frequency resource position is determined to need punching, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring frequency hopping information of the narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and under the condition that the second time frequency resource position needs to be punched, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position.
The signal processing method, the signal processing device, the computer equipment and the storage medium are applied to target communication equipment, the target communication equipment can be used for sending the narrowband frequency hopping signal and the broadband frequency fixing signal, and the frequency band occupied by the narrowband frequency hopping signal is overlapped with the frequency band occupied by the broadband frequency fixing signal. The signal processing method comprises the steps of obtaining frequency hopping information of a narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information; acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal; and under the condition that the second time frequency resource position needs to be punched, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position. The embodiment of the application provides a mode of fusing a narrow-band frequency hopping signal and a wide-band fixed-frequency signal, so that the wide-band signal and the narrow-band signal can use frequency spectrum resources in a non-orthogonal mode, and the utilization rate of the frequency spectrum resources is improved. And the method has the advantages of large coverage distance, high communication speed, strong anti-interference capability and the like.
Drawings
Fig. 1 is a schematic diagram of a prior art orthogonal networking of a narrowband frequency hopping signal and a wideband frequency fixed signal;
fig. 2 is a schematic distribution diagram of a narrowband frequency hopping signal and a wideband frequency fixing signal according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an implementation environment in which embodiments of the present application are related;
fig. 4 is a flowchart of a signal processing method according to an embodiment of the present application;
fig. 5 is a schematic diagram of a non-orthogonal network of a narrowband frequency hopping signal and a wideband frequency fixing signal provided in an embodiment of the present application;
fig. 6 is a schematic diagram of another non-orthogonal network of a narrowband frequency hopping signal and a wideband frequency-fixed signal according to an embodiment of the present application;
fig. 7 is a schematic diagram of a method for determining a first time-frequency resource location required to be occupied by a narrowband frequency hopping signal according to frequency hopping information according to an embodiment of the present application;
fig. 8 is a schematic diagram of a method for determining whether punching is required according to an embodiment of the present application;
fig. 9 is a schematic diagram illustrating a method for performing puncturing on a second time-frequency resource location according to an embodiment of the present application;
fig. 10 is a schematic diagram of a subcarrier provided in an embodiment of the present application;
fig. 11 is a schematic diagram illustrating a relationship between a punching position and a second time-frequency resource position according to an embodiment of the present application;
fig. 12 is a schematic diagram illustrating a relationship between a frame structure of a narrowband frequency hopping signal and a frame structure of a wideband frequency fixed signal according to an embodiment of the present application;
fig. 13 is a schematic diagram of another relationship between a puncturing position and a second time-frequency resource position according to an embodiment of the present application;
fig. 14 is a block diagram of a signal processing apparatus according to an embodiment of the present application;
fig. 15 is a block diagram of a communication device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In order to meet the differentiated requirements in terms of communication rate, communication distance, communication delay, user capacity, interference resistance and the like in different scenes, various communication standards have been formulated and used in the industry. However, these communication standards often have only a few better communication indexes, and in order to comprehensively improve communication capability and meet the requirements of communication services such as high-speed, long-distance, and low-delay, fusion of multiple standard signals is required. As shown in fig. 2, the narrowband signal with stronger coverage is fused with the wideband signal with higher communication rate, so that the requirements of wide-area coverage, strong anti-interference capability, high communication rate, large user capacity and low transmission delay can be met simultaneously.
In the current communication system, the signal bandwidth can be divided into two types, namely a broadband system and a narrowband system, and communication indexes which can be met by the broadband system and the narrowband system are greatly different. For example, the wideband standards such as LTE and WIMAX can provide high-rate and low-latency communication services, but the coverage distance is limited and the robustness is poor in a complex scenario; the narrow-band communication mode can provide long-distance coverage and has better connectivity, but the communication speed is relatively low and the communication time delay is relatively large. The requirements of users on good and far communication can be met only by fusing the broadband and narrowband signals.
In the related art, on one hand, a narrowband frequency hopping signal and a broadband fixed frequency signal need to be fused, and on the other hand, the narrowband frequency hopping signal and the broadband fixed frequency signal need to be prevented from interfering with each other, so that the fusion of the narrowband frequency hopping signal and the broadband fixed frequency signal generally adopts an orthogonal networking mode, wherein the orthogonal networking mode is as shown in fig. 1, the narrowband frequency hopping signal is located in a low-frequency region of a frequency spectrum resource, the broadband fixed frequency signal is distributed in a high-frequency region of the frequency spectrum resource, and the narrowband frequency hopping signal and the broadband fixed frequency signal are distributed in different regions of the frequency spectrum, so that the frequency spectrum resource occupied by the signals is more. The demand for spectrum resources by the communication system increases. At present, as spectrum resources are increasingly tense, the operability of the fusion mode of orthogonal networking is low.
Furthermore, for the narrowband frequency hopping signal, the frequency band of the corresponding frequency spectrum is relatively wide, the actually occupied frequency spectrum resource is only a small part of the corresponding frequency band, and most frequency spectrum resources on the frequency band corresponding to the narrowband frequency hopping signal are not used for transmitting signals, so that the frequency spectrum utilization rate of the orthogonal networking mode is relatively low.
Based on the above prior art problems, an embodiment of the present application provides a signal processing method, where the method is applied to a target communication device, the target communication device may be configured to send a narrowband frequency hopping signal and a wideband frequency fixing signal, and a frequency band occupied by the narrowband frequency hopping signal overlaps with a frequency band occupied by the wideband frequency fixing signal. Acquiring frequency hopping information of a narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information; acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal; and under the condition that the second time frequency resource position needs to be punched, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position. The embodiment of the application provides a mode of fusing a narrow-band frequency hopping signal and a wide-band fixed-frequency signal, so that the wide-band signal and the narrow-band signal can use frequency spectrum resources in a non-orthogonal mode, and the utilization rate of the frequency spectrum resources is improved. And the method has the advantages of large coverage distance, high communication speed, strong anti-interference capability and the like.
In the following, a brief description will be given of an implementation environment related to the signal processing method provided in the embodiment of the present application.
Referring to fig. 3, fig. 3 is a schematic diagram of an implementation environment related to a signal processing method provided in the embodiment of the present application, and as shown in fig. 1, the implementation environment may include a base station 301 and a signal receiving apparatus 302.
In this embodiment, both the base station 301 and the signal receiving device 302 have the capability of sending a narrowband frequency hopping signal and a wideband frequency fixing signal, and a frequency band occupied by the narrowband frequency hopping signal and a frequency band occupied by the wideband frequency fixing signal are overlapped.
The Base Station 301 may be, but not limited to, a macro Base Station, a micro Base Station, a small Base Station, and other types of Base Station devices, and may be a Base Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or eNodeB) in LTE, a relay Station or an Access point, a Base Station in a future 5G network, a Customer Premise Equipment (CPE), and the like, and is not limited herein.
The signal receiving device 302 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, portable wearable devices, and the like.
Please refer to fig. 4, which shows a flowchart of a signal processing method provided in an embodiment of the present application, where the method is applied to a target communication device, and the target communication device may be configured to transmit a narrowband frequency hopping signal and a wideband frequency fixing signal, where a frequency band occupied by the narrowband frequency hopping signal overlaps a frequency band occupied by the wideband frequency fixing signal, where the frequency band occupied by the narrowband frequency hopping signal overlaps the frequency band occupied by the wideband frequency fixing signal, and may refer to that the frequency band occupied by the narrowband frequency hopping signal partially overlaps the frequency band occupied by the wideband frequency fixing signal, or the frequency band occupied by the wideband frequency fixing signal completely overlaps the frequency band occupied by the narrowband frequency hopping signal, where the case of complete overlapping may be as shown in fig. 5, and the case of partial overlapping may be as shown in fig. 6.
Based on the above two cases, as shown in fig. 4, the signal processing method may include the steps of:
In the embodiment of the application, the narrowband frequency hopping system of the target communication equipment can avoid interfered frequency points by selecting the frequency points for communication, and in practical application, the target communication equipment can generally determine the frequency points to be avoided by narrowband frequency hopping signals and the available frequency points through a frequency hopping technology. The frequency points to be avoided and the frequency points which can be used are the frequency hopping information of the narrowband frequency hopping signal. The target communication device can determine the frequency domain resource position occupied by the narrowband frequency hopping signal according to the available frequency point.
Then, the target communication device may determine the time domain resource location that the narrowband frequency hopping signal needs to occupy based on the preset signal clock. And determining a first time-frequency resource position required to be occupied by the narrowband frequency hopping signal according to the frequency domain resource position and the time domain resource position.
It should be noted that, in this embodiment of the present application, before sending the wideband frequency-fixing signal and the narrowband frequency-hopping signal, the target communication device needs to perform time synchronization on the wideband frequency-fixing system and the narrowband frequency-hopping system, so as to ensure that the wideband frequency-fixing system and the narrowband frequency-hopping system have a uniform time reference, and thus, the signal start time and the signal end time of the wideband frequency-fixing signal and the narrowband frequency-hopping signal are the same. And the strict synchronization of the clocks of the broadband fixed frequency signal and the narrowband frequency hopping signal is ensured.
Taking the narrowband frequency hopping signal a in fig. 5 as an example, the frequency domain position and the time domain position corresponding to the narrowband frequency hopping signal a constitute a first time-frequency resource position that the narrowband frequency hopping signal a needs to occupy.
As can be seen from fig. 5 and 6, the frequency domain resources occupied by the wideband frequency-fixed signal are fixed, and the target communication device may obtain the wideband information of the wideband frequency-fixed system, where the wideband information includes the frequency band occupied by the wideband frequency-fixed signal in the frequency domain and the timing parameter of the wideband frequency-fixed signal, and the timing parameter is used to determine the time domain resources of the wideband frequency-fixed signal and the time interval of the wideband frequency-fixed signals in two adjacent periods.
As shown by the wideband frequency-fixed signal B in fig. 5, the second time-frequency resource location occupied by the wideband frequency-fixed signal B refers to the time domain location and the frequency band occupied by the wideband frequency-fixed signal.
In this embodiment, the target communication device may determine whether to perform puncturing on the second time-frequency resource location according to whether the wideband frequency-fixing signal and the narrowband frequency-hopping signal in the same time domain interfere with each other.
And if the interference is caused, determining that the position of the second time-frequency resource needs to be punched.
And if the interference is avoided, determining that the second time-frequency resource position does not need to be punched.
In this embodiment, the process of the target communication device determining the position of the hole on the second time-frequency resource location according to the first time-frequency resource location and the second time-frequency resource location includes the following steps:
the target communications device may determine the first time frequency resource location as a punch-out location.
Optionally, the target communication device may perform frequency domain expansion on the first time-frequency resource location to determine the expanded time-frequency resource location as a punching location.
Optionally, the target communications device may perform contraction and expansion on the first time-frequency resource location to determine the contracted time-frequency resource location as the hole punching location.
In this embodiment, the target communication device performs puncturing on the second time-frequency resource location, that is, deducts the time-frequency resource occupied by the first time-frequency resource location from the second time-frequency resource location. This allows only a narrowband hopping signal to be present at that location. Therefore, mutual interference of the narrowband frequency hopping signal and the broadband fixed frequency signal is avoided.
The method for fusing the narrow-band frequency hopping signal and the wide-band fixed-frequency signal enables the wide-band signal to use the frequency spectrum resource in a non-orthogonal mode, and improves the utilization rate of the frequency spectrum resource. And the method has the advantages of large coverage distance, high communication speed, strong anti-interference capability and the like.
Optionally, in an embodiment of the present application, after the target communication device performs puncturing on the second time-frequency resource location, the puncturing location may be sent to the signal receiving device, so that the signal receiving device receives the narrowband frequency hopping signal at the puncturing location.
When receiving the signal, the signal receiving device may receive the narrowband frequency hopping signal in the puncturing position based on the signal processing manner of the narrowband frequency hopping signal, and receive the wideband frequency hopping signal in the second time frequency resource position based on the signal processing manner of the wideband frequency hopping signal in the frequency band other than the puncturing position.
The target communication device can respectively transmit and receive the narrowband frequency hopping signal and the broadband fixed frequency signal by adopting different signal transceiving links. Correspondingly, the signal receiving device can also receive and transmit the narrowband frequency hopping signal and the broadband fixed frequency signal by adopting different signal transceiving links.
Optionally, if the target communication device uses the same signal transceiving link to transmit and receive the narrowband frequency hopping signal and the wideband frequency fixing signal, the uplink time slot and the downlink time slot at the punching position need to be processed in this case.
After the second time frequency resource position is punched, the original broadband fixed frequency signal is replaced by a narrowband frequency hopping signal, the time slot configuration of the narrowband frequency hopping signal may not be the same as the time slot configuration of the broadband fixed frequency signal, the signal receiving device receives and transmits data originally based on the time slot configuration of the broadband fixed frequency signal, and after the punching position is punched, if the narrowband frequency hopping signal at the punching position is received and transmitted according to the time slot configuration of the broadband fixed frequency signal, the signal cannot be normally received or transmitted at the punching position.
Based on this, in the embodiment of the present application, after the puncturing process, the target communication device may modify the uplink time slot and the downlink time slot of the puncturing position according to the uplink time slot and the downlink time slot of the narrowband frequency hopping signal.
The frequency hopping information further includes a timeslot configuration, where the timeslot configuration is used to indicate an uplink timeslot and a downlink timeslot of the narrowband frequency hopping signal. After acquiring the time slot configuration of the frequency hopping signal, the target communication device may modify the uplink time slot and the downlink time slot at the punching position, so that the uplink time slot at the punching position is the same as the uplink time slot of the narrowband frequency hopping signal, and the downlink time slot at the punching position is the same as the downlink time slot of the narrowband frequency hopping signal.
Optionally, in this embodiment of the present application, the target communication device may send, in a broadcast channel or a synchronization channel, time-frequency resource deduction information in a next period, where the time-frequency resource deduction information includes a number of a target subcarrier at a puncturing position and a timeslot configuration of the puncturing position. Optionally, the target communication device may also notify the signal receiving device of the time-frequency resource information to be deducted in advance through the system information; and sending time-frequency resource deduction information through dynamic scheduling information or activation signaling.
Optionally, the signal receiving device may obtain time-frequency resource deduction information from different channels according to different states of the signal receiving device, and may obtain the time-frequency resource deduction information through a broadcast channel or a synchronization channel for a terminal that does not access a network and a signal receiving device in a non-connected state; the method can also obtain the system information for the connected signal receiving equipment, and can also obtain the dynamic scheduling information/activation signaling for the signal receiving equipment with service transmission.
In an embodiment of the present application, the frequency hopping information includes a hopping table and timing parameters of a narrowband hopping signal, as shown in fig. 7, fig. 7 is a schematic diagram illustrating a method for determining a location of a first time-frequency resource that needs to be occupied by the narrowband hopping signal according to the frequency hopping information, where the method includes the following steps:
In this embodiment, a narrowband frequency hopping system in a target communication device may determine, in advance, frequency hopping information of a narrowband frequency hopping signal within a certain time length in the future, where the frequency hopping information may be used to represent frequency domain resources that the narrowband frequency hopping signal needs to occupy in different time domains within the certain time length in the future.
The hopping table is used to assign a hopping sequence to each narrowband hopping signal in the narrowband hopping system to specify the frequencies used by the narrowband hopping signal at different points in time. In this embodiment, the target communication device may determine, according to the frequency hopping table, a frequency domain resource occupied by the narrowband frequency hopping signal.
The timing parameter is used for determining the time interval between two adjacent narrowband frequency hopping signals, so as to ensure the synchronization of the start time points of the narrowband frequency hopping signals and the broadband frequency-fixing signals. In the embodiment of the application, the target communication device may determine the time domain resource occupied by the narrowband frequency hopping signal according to the timing parameter.
In step 702, the target communication device determines a first time-frequency resource location according to the time-domain resource location and the frequency-domain resource location.
In this embodiment, the target communication device may determine the first time-frequency resource location according to the time-domain resource location and the frequency-domain resource location.
In the embodiment of the application, accurately determining the position of the first time-frequency resource is a key step of determining the time-frequency resource needing to be removed. If the first time-frequency resource position is inaccurate, the time-frequency resource position of the keying-out is inaccurate, so that the broadband fixed-frequency signal and the narrowband frequency-hopping signal are interfered with each other, and the communication quality is influenced. In the embodiment of the application, the mutual interference of the broadband fixed frequency signal and the narrowband frequency hopping signal can be avoided by accurately determining the position of the first time frequency resource, and the communication quality of the communication equipment is improved.
In one embodiment of the present application, as shown in fig. 8, the process of the target communication device determining whether puncturing is required comprises the steps of:
In the embodiment of the application, after the target communication device acquires the first time-frequency resource position and the second time-frequency resource position, whether the narrowband frequency hopping signal and the broadband fixed-frequency signal interfere with each other needs to be detected.
The first time-frequency resource position and the second time-frequency resource position are overlapped, namely, the first time-frequency resource position and the second time-frequency resource position represent that a narrowband frequency hopping signal and a broadband fixed frequency signal exist at the first time-frequency resource position at the same time. Thus, the signal receiving device cannot identify the signal at the first video resource location, i.e. the narrowband frequency hopping signal and the wideband frequency fixed signal interfere with each other. And if the first time-frequency resource position and the second time-frequency resource position are not overlapped, determining that the narrowband frequency hopping signal and the broadband fixed-frequency signal are not interfered.
As shown in the region C by the dotted line in fig. 6, C1 represents a first time-frequency resource position occupied by the narrowband frequency hopping signal, C2 represents a second time-frequency resource position occupied by the wideband frequency fixing signal, and since C1 and C2 do not overlap, it is determined that the narrowband frequency hopping signal does not interfere with the wideband frequency fixing signal.
As shown in the D region shown by the dotted line in fig. 6, D1 represents a first time-frequency resource position occupied by the narrowband frequency hopping signal, D2 represents a second time-frequency resource position occupied by the wideband frequency fixed signal, and since D1 is located in D2, that is, the first time-frequency resource position and the second time-frequency resource position are overlapped, it is determined that the narrowband frequency hopping signal and the wideband frequency fixed signal interfere with each other.
In the embodiment of the application, under the condition that the narrowband frequency hopping signal and the broadband fixed frequency signal can interfere with each other, the target communication device determines that the second time-frequency resource position needs to be punched, and only the narrowband frequency hopping signal exists at the punching position through punching, so that the narrowband frequency hopping signal and the broadband fixed frequency signal are prevented from interfering with each other.
In the embodiment of the application, in different time domains, whether interference exists between the narrowband frequency hopping signal and the broadband fixed frequency signal may not be the same, and if the narrowband frequency hopping signal and the broadband fixed frequency signal do not interfere with each other, the target communication device may continue to process the signal in the next signal period without punching the second time-frequency resource position in each signal processing period, thereby reducing the data computation amount.
In an alternative implementation, as shown in fig. 9, fig. 9 is a schematic diagram illustrating a method for puncturing in a second time-frequency resource location. The method comprises the following steps:
in step 901, the target communication device obtains a target subcarrier located at a puncturing position on a second time-frequency resource position.
In the embodiment of the present application, each of the narrowband frequency hopping signal and the wideband frequency fixing signal may include a plurality of subcarriers, where the subcarriers may be as shown in fig. 10. As can be seen from fig. 6, the time frequency resource of the second time frequency resource location is composed of a plurality of subcarriers arranged consecutively. The target communication device may determine a target subcarrier of the second video resource location at the puncture location based on the puncture location.
Optionally, in the frequency domain, the narrowband frequency hopping signal may be in a single carrier mode, or may be in a multi-carrier mode OFDM, and the wideband frequency hopping signal needs to adopt a multi-carrier mode.
Optionally, the relationship between the puncturing position and the second time-frequency resource position may be as shown in fig. 11, in which case, the subcarriers involved in the area covered by the puncturing position may be determined as the target subcarriers.
Since the puncturing positions in fig. 11 do not completely occupy the subcarriers E and F, according to the above method, the subcarriers E and F need to be determined as the target subcarriers, which may cause unnecessary waste of the carriers of the wideband fixed-frequency signal. Based on this, the embodiments of the present application respectively design frame structures for the narrowband frequency hopping signal and the wideband frequency fixing signal.
As shown in fig. 12, the frame length of the signal frame of the narrowband frequency hopping signal is an integer multiple of the frame length of the signal frame of the wideband frequency-fixed signal. The time slot length of the signal frame of the narrow-band frequency hopping signal is integral multiple of the time slot length of the signal frame of the broadband fixed-frequency signal. In this way, the frame structures of the two signals can be aligned in integer multiple in the time domain, so that it can be ensured that the starting point and the ending point of the puncturing position determined according to the first time-frequency resource position can cover the subcarrier in integer multiple, in this case, the relationship between the puncturing position and the second time-frequency resource position can be as shown in fig. 13, and the target communication device can determine the subcarrier in the area covered by the puncturing position as the target subcarrier.
In step 902, the target communication device performs muting processing on the target subcarrier.
In the embodiment of the application, the target communication device performs the silent processing on the target subcarrier in the broadband fixed-frequency signal, that is, the target subcarrier in the broadband fixed-frequency signal does not carry a signal. Therefore, only the narrowband frequency hopping signal exists at the punching position, and the broadband frequency fixing signal does not exist, so that the mutual interference of the narrowband frequency hopping signal and the broadband frequency fixing signal is avoided.
It should be understood that, although the respective steps in the flowcharts of fig. 4 to 9 are sequentially shown as indicated by arrows, the steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 4 to 9 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternatively with other steps or at least some of the steps or stages in other steps.
In one embodiment, as shown in fig. 14, a signal processing apparatus 1400 is provided, which is applied to a target communication device, where the target communication device may be configured to transmit a narrowband frequency hopping signal and a wideband frequency fixing signal, and a frequency band occupied by the narrowband frequency hopping signal overlaps with a frequency band occupied by the wideband frequency fixing signal, including: a first obtaining module 1401, a second obtaining module 1402 and a processing module 1403, wherein:
a first obtaining module 1401, configured to obtain frequency hopping information of the narrowband frequency hopping signal, and determine, according to the frequency hopping information, a first time-frequency resource position that the narrowband frequency hopping signal needs to occupy;
a second obtaining module 1402, configured to obtain a second time-frequency resource location occupied by the wideband frequency-fixed signal;
and a processing module 1403, configured to, when it is determined that the second time frequency resource location needs to be punctured, determine a puncturing position on the second time frequency resource location according to the first time frequency resource location and the second time frequency resource location, and puncture the second time frequency resource location according to the puncturing position.
In one embodiment, the frequency hopping information includes a frequency hopping table and timing parameters of the narrowband frequency hopping signal, and the first obtaining module 1401 is specifically configured to:
determining a time domain resource position and a frequency domain resource position which are required to be occupied by the narrowband frequency hopping signal according to the frequency hopping table and the timing parameter;
and determining the first time-frequency resource position according to the time domain resource position and the frequency domain resource position.
In one embodiment, the processing module 1403 is specifically configured to:
detecting whether the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other according to the first time frequency resource position and the second time frequency resource position;
and if the narrowband frequency hopping signal and the broadband fixed frequency signal are interfered with each other, determining that the position of the second time frequency resource needs to be punched.
In one embodiment, the processing module 1403 is specifically configured to:
acquiring a target subcarrier positioned at a punching position on a second time-frequency resource position;
and carrying out silencing treatment on the target subcarrier.
In one embodiment, the processing module 1403 is specifically configured to:
the frame length of the signal frame of the narrowband frequency hopping signal is integral multiple of the frame length of the signal frame of the broadband fixed frequency signal;
the time slot length of the signal frame of the narrow-band frequency hopping signal is integral multiple of the time slot length of the signal frame of the broadband fixed-frequency signal.
In one embodiment, the processing module 1403 is specifically configured to:
and modifying the uplink time slot and the downlink time slot of the punching position according to the uplink time slot and the downlink time slot of the narrowband frequency hopping signal.
In one embodiment, the processing module 1403 is specifically configured to:
and sending the punching position to the signal receiving equipment so that the signal receiving equipment can receive the narrowband frequency hopping signal at the punching position.
For specific limitations of the signal processing apparatus, reference may be made to the above limitations of the signal processing method, which is not described herein again. The respective modules in the signal processing apparatus can be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the communication device, and can also be stored in a memory in the communication device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment of the present application, a communication device is provided, and an internal structure diagram of the communication device may be as shown in fig. 15. The communication device includes a receiver, a transmitter, a processor, and a memory connected by a system bus. The receiver is used for receiving a narrowband frequency hopping signal and a broadband frequency fixing signal. The transmitter is used for transmitting a narrowband frequency hopping signal and a wideband frequency fixing signal. The processor is used to provide computing and control capabilities. The memory comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a signal processing method.
Those skilled in the art will appreciate that the structure shown in fig. 15 is a block diagram of only a portion of the structure associated with the present application, and does not constitute a limitation on the communication devices to which the present application applies, and that a particular communication device may include more or fewer components than shown, or combine certain components, or have a different arrangement of components.
In one embodiment, there is provided a communication device comprising a memory and a processor, the memory storing a computer program that when executed by the processor performs:
acquiring frequency hopping information of the narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and under the condition that the second time frequency resource position needs to be punched, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position.
In one embodiment, the frequency hopping information comprises a hopping table and timing parameters of the narrowband hopping signal, and the computer program when executed by the processor further implements:
determining a time domain resource position and a frequency domain resource position which are required to be occupied by the narrowband frequency hopping signal according to the frequency hopping table and the timing parameter;
and determining the first time-frequency resource position according to the time domain resource position and the frequency domain resource position.
In one embodiment, the computer program when executed by the processor may further implement:
detecting whether the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other or not according to the first time frequency resource position and the second time frequency resource position;
and if the narrowband frequency hopping signal and the broadband fixed frequency signal are interfered with each other, determining that the second time frequency resource position needs to be subjected to punching processing.
In one embodiment, the computer program when executed by the processor further implements:
acquiring a target subcarrier positioned at a punching position on a second time-frequency resource position;
and carrying out silencing treatment on the target subcarrier.
In one embodiment, the computer program when executed by the processor may further implement:
the frame length of the signal frame of the narrowband frequency hopping signal is integral multiple of the frame length of the signal frame of the broadband fixed frequency signal;
the time slot length of the signal frame of the narrowband frequency hopping signal is integral multiple of the time slot length of the signal frame of the wideband frequency-fixing signal.
In one embodiment, the computer program when executed by the processor may further implement:
and modifying the uplink time slot and the downlink time slot of the punching position according to the uplink time slot and the downlink time slot of the narrowband frequency hopping signal.
In one embodiment, the computer program when executed by the processor may further implement:
and sending the punching position to the signal receiving equipment so that the signal receiving equipment can receive the narrowband frequency hopping signal at the punching position.
The communication device provided in the embodiment of the present application has similar implementation principles and technical effects to those of the method embodiments described above, and is not described herein again.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, performs the steps of:
acquiring frequency hopping information of the narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and under the condition that the second time frequency resource position needs to be punched, the punching position on the second time frequency resource position is determined according to the first time frequency resource position and the second time frequency resource position, and punching is carried out on the second time frequency resource position according to the punching position.
In one embodiment, the hopping information comprises a hopping table and timing parameters of the narrowband hopping signal, and the computer program when executed by the processor further implements the steps of:
determining the time domain resource position and the frequency domain resource position which need to be occupied by the narrowband frequency hopping signal according to the frequency hopping table and the timing parameter;
and determining the first time-frequency resource position according to the time domain resource position and the frequency domain resource position.
In one embodiment, the computer program when executed by the processor further performs the steps of:
detecting whether the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other or not according to the first time frequency resource position and the second time frequency resource position;
and if the narrowband frequency hopping signal and the broadband fixed frequency signal are interfered with each other, determining that the position of the second time frequency resource needs to be punched.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring a target subcarrier positioned at a punching position on a second time-frequency resource position;
and carrying out silencing treatment on the target subcarrier.
In one embodiment, the computer program when executed by the processor further performs the steps of:
the frame length of the signal frame of the narrowband frequency hopping signal is integral multiple of the frame length of the signal frame of the broadband fixed frequency signal;
the time slot length of the signal frame of the narrow-band frequency hopping signal is integral multiple of the time slot length of the signal frame of the broadband fixed-frequency signal.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and modifying the uplink time slot and the downlink time slot of the punching position according to the uplink time slot and the downlink time slot of the narrowband frequency hopping signal.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and sending the punching position to the signal receiving equipment so that the signal receiving equipment can receive the narrowband frequency hopping signal at the punching position.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A signal processing method, applied to a target communication device, where the target communication device may be configured to send a narrowband frequency hopping signal and a wideband frequency fixing signal, and a frequency band occupied by the narrowband frequency hopping signal overlaps with a frequency band occupied by the wideband frequency fixing signal, the method includes:
acquiring frequency hopping information of a narrowband frequency hopping signal, and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and under the condition that the second time frequency resource position needs to be punched, determining a punching position on the second time frequency resource position according to the first time frequency resource position and the second time frequency resource position, and punching on the second time frequency resource position according to the punching position.
2. The method of claim 1, wherein the frequency hopping information includes a frequency hopping table and timing parameters of the narrowband frequency hopping signal, and wherein the determining the first time-frequency resource location required to be occupied by the narrowband frequency hopping signal according to the frequency hopping information includes:
determining a time domain resource position and a frequency domain resource position which are required to be occupied by the narrowband frequency hopping signal according to the frequency hopping table and the timing parameter;
and determining the first time-frequency resource position according to the time domain resource position and the frequency domain resource position.
3. The method of claim 1, wherein prior to determining the puncturing location at the second time-frequency resource location based on the first time-frequency resource location and the second time-frequency resource location, the method further comprises:
detecting whether the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other according to the first time frequency resource position and the second time frequency resource position;
and if the narrow-band frequency hopping signal and the broadband fixed-frequency signal are interfered with each other, determining that the second time-frequency resource position needs to be punched.
4. The method of claim 1, wherein the puncturing over the second time-frequency resource location according to the puncturing position comprises:
acquiring a target subcarrier located at the punching position on the second time-frequency resource position;
and carrying out silencing treatment on the target subcarrier.
5. The method of claim 1 or 4, further comprising:
the frame length of the signal frame of the narrowband frequency hopping signal is integral multiple of the frame length of the signal frame of the broadband fixed frequency signal;
and the time slot length of the signal frame of the narrowband frequency hopping signal is integral multiple of the time slot length of the signal frame of the broadband fixed frequency signal.
6. The method of claim 1, further comprising:
and modifying the uplink time slot and the downlink time slot of the punching position according to the uplink time slot and the downlink time slot of the narrowband frequency hopping signal.
7. The method of claim 1, further comprising:
and sending the punching position to a signal receiving device so that the signal receiving device can receive the narrowband frequency hopping signal at the punching position.
8. A signal processing apparatus, applied to a target communication device, wherein the target communication device can be used to transmit a narrowband frequency hopping signal and a wideband frequency fixing signal, and a frequency band occupied by the narrowband frequency hopping signal and a frequency band occupied by the wideband frequency fixing signal overlap, the apparatus includes:
the first acquisition module is used for acquiring frequency hopping information of a narrowband frequency hopping signal and determining a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information;
the second acquisition module is used for acquiring a second time-frequency resource position occupied by the broadband fixed-frequency signal;
and the processing module is used for determining the punching position on the second time-frequency resource position according to the first time-frequency resource position and the second time-frequency resource position under the condition that the second time-frequency resource position needs punching processing, and punching on the second time-frequency resource position according to the punching position.
9. A communication device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, carries out the method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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