CN114759950B - Signal processing method, device, communication equipment and medium - Google Patents

Signal processing method, device, communication equipment and medium Download PDF

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Publication number
CN114759950B
CN114759950B CN202011597232.1A CN202011597232A CN114759950B CN 114759950 B CN114759950 B CN 114759950B CN 202011597232 A CN202011597232 A CN 202011597232A CN 114759950 B CN114759950 B CN 114759950B
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frequency
signal
time
narrowband
resource position
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CN114759950A (en
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周雄
彭岳峰
张全君
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Guangzhou Haige Communication Group Inc Co
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Guangzhou Haige Communication Group Inc Co
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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
    • 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
    • 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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a signal processing method, a device, communication equipment and a medium, and relates 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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position. The embodiment of the application provides a method for fusing a narrowband frequency hopping signal and a broadband fixed frequency signal, so that the broadband signal can use spectrum resources in a non-orthogonal mode, and the utilization rate of the spectrum resources is improved. And the method has the advantages of large coverage distance, high communication rate, strong anti-interference capability and the like.

Description

Signal processing method, device, communication equipment and medium
Technical Field
The present disclosure relates to the field of signal processing technologies, and in particular, to a signal processing method, a device, a communication device, and a medium.
Background
Broadband communication can provide high-rate, low-latency communication services, but has limited coverage distances. Narrowband communication may provide long-range coverage, but may have a relatively low communication rate and a relatively large communication delay. In order to achieve better communication effect, the integration of a broadband communication mode and a narrowband communication mode is a hot research direction in the field.
In practical applications, the merging of the broadband communication mode and the narrowband communication mode generally refers to: the narrowband frequency hopping signal and the broadband frequency-fixing signal are orthogonally networked, wherein, as shown in fig. 1, a schematic diagram of orthogonal networking of the narrowband frequency hopping signal and the broadband frequency-fixing signal is shown. As can be seen from fig. 1, the narrowband hopping signal is located in the low frequency region of the spectrum resource and the wideband fixed frequency signal is distributed in the high frequency region of the spectrum resource. The above networking mode has low spectrum utilization rate.
Disclosure of Invention
Based on this, it is necessary to provide a signal processing method, apparatus, communication device, and medium in order to solve the above-mentioned technical problems.
A signal processing method is applied to a target communication device, the target communication device can be used for transmitting a narrowband hopping signal and a broadband fixed frequency signal, the frequency band occupied by the narrowband hopping signal overlaps with the frequency band occupied by the broadband fixed frequency signal, and the method comprises the following steps:
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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position.
In one embodiment, the frequency hopping information includes a frequency hopping table and timing parameters of a narrowband frequency hopping signal, and determining a first time-frequency resource position required to be occupied by the narrowband frequency hopping signal according to the frequency hopping information includes:
determining the time domain resource position and the 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 at the second time-frequency resource position according to the first time-frequency resource position and the second time-frequency resource position, the method further comprises:
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;
If the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other, determining the position of the second time-frequency resource needs to be perforated.
In one embodiment, the puncturing at the second time-frequency resource location according to the puncturing location includes:
acquiring a target subcarrier at a punching position on a second time-frequency resource position;
and carrying out silence processing on the target sub-carrier.
In one embodiment, the method further comprises:
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 broadband fixed frequency signal;
the time slot length of the signal frame of the narrowband hopping signal is an integer multiple of the time slot length of the signal frame of the wideband fixed frequency 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:
the puncturing position is transmitted to the signal receiving device for the signal receiving device to receive the narrowband frequency-hopped signal at the puncturing position.
A signal processing apparatus for use with a target communication device operable to transmit a narrowband frequency hopping signal and a wideband frequency-fixing signal, the narrowband frequency hopping signal occupying a frequency band that overlaps with the wideband frequency-fixing signal, the apparatus comprising:
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 required to be 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 is determined to need punching processing, and punching on the second time-frequency resource position according to the punching position.
A communication device comprising a memory storing a computer program and a processor which when executing the computer program performs the steps of:
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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position.
The signal processing method, the device, the computer equipment and the storage medium are applied to target communication equipment, and the target communication equipment can be used for sending a narrowband frequency hopping signal and a broadband frequency-fixing signal, wherein the frequency band occupied by the narrowband frequency hopping signal overlaps 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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position. The embodiment of the application provides a method for fusing a narrowband frequency hopping signal and a broadband fixed frequency signal, so that the broadband signal can use spectrum resources in a non-orthogonal mode, and the utilization rate of the spectrum resources is improved. And the method has the advantages of large coverage distance, high communication rate, strong anti-interference capability and the like.
Drawings
Fig. 1 is a schematic diagram of an orthogonal networking of a narrowband hopping signal and a wideband fixed frequency signal provided in the prior art;
fig. 2 is a schematic distribution diagram of a narrowband frequency hopping signal and a wideband fixed frequency signal according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an implementation environment according to an embodiment of the present application;
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 networking of a narrowband frequency hopping signal and a wideband fixed frequency signal provided in an embodiment of the present application;
fig. 6 is a schematic diagram of a non-orthogonal networking of another narrowband hopping signal and a wideband fixed-frequency signal according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of a method for determining a first time-frequency resource location 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 needed according to an embodiment of the present application;
fig. 9 is a schematic diagram of a method for punching 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 of 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 of a relationship between a frame structure of a narrowband frequency hopping signal and a frame structure of a wideband fixed frequency signal according to an embodiment of the present application;
fig. 13 is a schematic diagram of a relationship between a punching position and a second time-frequency resource position according to another embodiment of the present disclosure;
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 will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In order to meet the different demands in terms of different scene communication rates, communication distances, communication delays, user capacities, anti-interference capabilities and the like, various communication standards have been formulated and used in the industry. However, these communication standards often only have a few better communication indexes, and if the communication capability is improved comprehensively, the requirements of communication services such as high speed, long distance, low time delay and the like are met, fusion of various standard signals is required. As shown in fig. 2, the narrow-band signal with stronger coverage and the broadband signal with higher communication rate are fused, so that the requirements of wide-area coverage, strong anti-interference capability, high communication rate, large user capacity and low transmission delay can be simultaneously met.
In the current communication system, two types of communication indexes can be classified according to signal bandwidths, namely a broadband system and a narrowband system, and the communication indexes which can be met by the broadband system and the narrowband system have larger differences. For example, wideband communication standards such as LTE and WIMAX can provide high-rate, low-latency communication services, but have limited coverage distances and poor robustness in complex scenarios; the narrowband communication mode can provide long-distance coverage, has better communication performance, but has relatively low communication rate and relatively large communication time delay. The broadband signal and the narrowband signal are fused, so that the requirements of users on good communication and far communication can be met.
In the related art, on one hand, the narrowband frequency hopping signal and the wideband frequency-fixing signal need to be fused, and on the other hand, the narrowband frequency hopping signal and the wideband frequency-fixing signal need to be prevented from interfering with each other, so that the fusion of the narrowband frequency hopping signal and the wideband frequency-fixing signal generally adopts an orthogonal networking mode, wherein the orthogonal networking mode is shown in fig. 1, the narrowband frequency hopping signal is located in a low frequency region of a frequency spectrum resource, the wideband frequency-fixing signal is distributed in a high frequency region of the frequency spectrum resource, and the narrowband frequency hopping signal and the wideband frequency-fixing signal are distributed in different regions of the frequency spectrum, so that the frequency spectrum resources occupied by the signals are more. The demand for spectrum resources by the communication system increases. At present, as the frequency spectrum resources are increasingly tensed, the operability of the fusion mode of the orthogonal networking is lower.
Furthermore, for the narrowband frequency hopping signal, the frequency band of the corresponding frequency spectrum is relatively wide, but the actually occupied frequency spectrum resource is only a small part of the corresponding frequency band, and most of the frequency spectrum resource on the frequency band corresponding to the narrowband frequency hopping signal is not used for transmitting the signal, so that the frequency spectrum utilization rate of the orthogonal networking mode is relatively low.
Based on the above prior art problems, the embodiments of the present application provide a signal processing method, which is 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, where a frequency band occupied by the narrowband frequency hopping signal overlaps 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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position. The embodiment of the application provides a method for fusing a narrowband frequency hopping signal and a broadband fixed frequency signal, so that the broadband signal can use spectrum resources in a non-orthogonal mode, and the utilization rate of the spectrum resources is improved. And the method has the advantages of large coverage distance, high communication rate, strong anti-interference capability and the like.
Next, an implementation environment related to the signal processing method provided in the embodiment of the present application will be briefly described.
Referring to fig. 3, fig. 3 is a schematic diagram of an implementation environment related to a signal processing method according to an embodiment of the present application, and as shown in fig. 1, the implementation environment may include a base station 301 and a signal receiving device 302.
In this embodiment, the base station 301 and the signal receiving device 302 both have the capability of transmitting a narrowband frequency hopping signal and a wideband frequency-fixing signal, and the frequency band occupied by the narrowband frequency hopping signal overlaps the frequency band occupied by the wideband frequency-fixing signal.
The base station 301 may be, but not limited to, a macro base station, a micro base station, a small base station, or other base station devices, and may be a base station (Base Transceiver Station, BTS) in global mobile communications (Global System of Mobile communication, abbreviated GSM) or code division multiple access (Code Division Multiple Access, abbreviated CDMA), a base station (NodeB, NB) in wideband code division multiple access (Wideband Code Division Multiple Access, abbreviated WCDMA), an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an access point, or a base station, a customer premise equipment (Customer Premise Equipment, CPE) in a future 5G network, or the like.
The signal receiving apparatus 302 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, portable wearable devices, and the like.
Referring to fig. 4, a flowchart of a signal processing method provided by an embodiment of the present application is shown, where the method is applied to a target communication device, and the target communication device may be used to send 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 overlapping of the frequency band occupied by the narrowband frequency hopping signal and the frequency band occupied by the wideband frequency-fixing signal may refer to a partial overlapping, or an entire overlapping, where the case of the entire overlapping may be as shown in fig. 5, and the case of the 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 step 401, the target communication device obtains frequency hopping information of the narrowband frequency hopping signal, and determines a first time-frequency resource position occupied by the narrowband frequency hopping signal according to the frequency hopping information.
In the embodiment of the application, the narrowband frequency hopping system of the target communication device can avoid the interfered frequency point by selecting the frequency point for communication, and in practical application, the target communication device can generally determine the frequency point to be avoided and the frequency point to be used by the narrowband frequency hopping signal through the frequency hopping technology. The frequency points to be avoided are frequency hopping information of the usable frequency points, namely the narrowband frequency hopping signals. The target communication device may determine, according to the usable frequency points, a frequency domain resource location to be occupied by the narrowband frequency hopping signal.
The target communication device may then determine the time domain resource locations that the narrowband frequency hopping signal needs to occupy based on the preset signal clock. And determining a first time-frequency resource position which is required to be occupied by the narrowband frequency hopping signal according to the frequency domain resource position and the time domain resource position.
In the embodiment of the present application, the target communication device needs to perform time synchronization on the wideband fixed frequency system and the narrowband frequency hopping system before sending the wideband fixed frequency signal and the narrowband frequency hopping signal, so as to ensure that the wideband fixed frequency 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 fixed frequency signal and the narrowband frequency hopping signal are the same. The clock of the broadband fixed frequency signal and the clock of the narrowband frequency hopping signal are strictly synchronous.
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 form a first time-frequency resource position required to be occupied by the narrowband frequency hopping signal a.
In step 402, the target communication device obtains a second time-frequency resource location occupied by the wideband fixed frequency signal.
As can be seen from fig. 5 and fig. 6, the frequency domain resources occupied by the wideband fixed frequency signal are fixed, and the target communication device may acquire wideband information of the wideband fixed frequency system, where the wideband information includes a frequency band occupied by the wideband fixed frequency signal in the frequency domain, and a timing parameter of the wideband fixed frequency signal, where the timing parameter is used to determine a time domain resource of the wideband fixed frequency signal and a time interval of the wideband fixed frequency signal in two adjacent periods.
As shown in fig. 5, the second time-frequency resource position occupied by the wideband fixed-frequency signal B refers to the time-domain position and the occupied frequency band corresponding to the wideband fixed-frequency signal B.
In step 403, when determining that the second time-frequency resource position needs to be subjected to the puncturing processing, the target communication device determines a puncturing position on the second time-frequency resource position according to the first time-frequency resource position and the second time-frequency resource position, and punctures the second time-frequency resource position according to the puncturing position.
In this embodiment of the present application, the target communication device may determine whether to perform puncturing processing on the second time-frequency resource location according to whether the wideband fixed-frequency signal and the narrowband frequency-hopping signal on the same time domain interfere with each other.
If the two time-frequency resources interfere with each other, determining that the second time-frequency resource position needs to be punched.
If the second time-frequency resource positions are not interfered with each other, the second time-frequency resource positions are determined without punching processing.
In this embodiment of the present application, the process of determining, by the target communication device, the puncture location at the second time-frequency resource location according to the first time-frequency resource location and the second time-frequency resource location includes the following contents:
the target communication device may determine the first time-frequency resource location as a puncture 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 puncturing location.
Optionally, the target communication device may perform contraction and expansion on the first time-frequency resource location to determine the contracted time-frequency resource location as the puncturing 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. Such that only narrowband hopping signals are present at that location. Thereby avoiding the mutual interference of the narrowband frequency hopping signal and the broadband frequency-fixing signal.
The method for fusing the narrow-band frequency hopping signal and the wide-band fixed-frequency signal enables the wide-band signal and the narrow-band signal to use spectrum resources in a non-orthogonal mode, and improves the utilization rate of the spectrum resources. And the method has the advantages of large coverage distance, high communication rate, strong anti-interference capability and the like.
Optionally, in an embodiment of the present application, after the target communication device punctures the second time-frequency resource location, the puncture location may be sent to the signal receiving device, so that the signal receiving device receives the narrowband frequency hopping signal at the puncture location.
When the signal receiving device receives a signal, the signal receiving device may receive the narrowband frequency hopping signal in a signal processing manner based on the narrowband frequency hopping signal at the punching position, and receive the wideband frequency hopping signal in a signal processing manner based on the width frequency hopping signal in a frequency band except for the punching position in the second time-frequency resource position.
The target communication device may employ different signal transceiving links to respectively transmit and receive narrowband frequency hopping signals and wideband frequency fixing signals. Correspondingly, the signal receiving device can also adopt different signal receiving and transmitting links to receive and transmit the narrowband frequency hopping signal and the broadband fixed frequency signal.
Alternatively, if the target communication device uses the same signal transceiving link to send and receive the narrowband frequency hopping signal and the wideband frequency hopping signal, the uplink time slot and the downlink time slot at the punching position need to be processed in this case.
When the second time-frequency resource position is punctured, the original wideband fixed-frequency signal is replaced by the narrowband frequency-hopping signal, and the time slot configuration of the narrowband frequency-hopping signal may not be the same as the time slot configuration of the wideband fixed-frequency signal, the signal receiving device originally receives and transmits data based on the time slot configuration of the wideband fixed-frequency signal, and after the puncturing position is punctured, if the narrowband frequency-hopping signal at the puncturing position is still received and transmitted according to the time slot configuration of the wideband fixed-frequency signal, the signal cannot be normally received or transmitted at the puncturing position.
Based on this, in the embodiment of the present application, after the puncturing processing, 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 comprises a time slot configuration, wherein the time slot configuration is used for indicating an uplink time slot and a downlink time slot of the narrowband frequency hopping signal. After the target communication device obtains the time slot configuration of the frequency hopping signal, the uplink time slot and the downlink time slot of the punching position can be modified, so that the uplink time slot of the punching position is identical to the uplink time slot of the narrowband frequency hopping signal, and the downlink time slot of the punching position is identical to the downlink time slot of the narrowband frequency hopping signal.
Optionally, in the embodiment of the present application, the target communication device may send time-frequency resource deduction information in a next period on a broadcast channel or a synchronization channel, where the time-frequency resource deduction information includes a number of a target subcarrier at a puncturing position and a time slot configuration of the puncturing position. Optionally, the target communication device may also inform the signal receiving device of time-frequency resource information to be deducted in advance through system information; and transmitting the time-frequency resource deduction information through dynamic scheduling information or activation signaling.
Optionally, the signal receiving device may acquire time-frequency resource deduction information from different channels according to different states thereof, and may acquire the signal receiving device in a non-network-connected state or a broadcast channel or a synchronization channel for the signal receiving device in a non-network-connected state; the system information can be obtained for the connected signal receiving equipment, and the dynamic scheduling information/activation signaling can be obtained for the signal receiving equipment with service transmission.
In one embodiment of the present application, the frequency hopping information includes a frequency hopping table and timing parameters of the narrowband frequency hopping signal, as shown in fig. 7, and a schematic diagram of a method for determining a first time-frequency resource position required to be occupied by the narrowband frequency hopping signal according to the frequency hopping information is shown in fig. 7, and the method includes the following steps:
in step 701, the target communication device determines the time domain resource position and the frequency domain resource position occupied by the narrowband frequency hopping signal according to the frequency hopping table and the timing parameter.
In the embodiment of the application, the narrowband frequency hopping system in the target communication device can predetermine frequency hopping information of the narrowband frequency hopping signal within a certain time length in the future, wherein the frequency hopping information can be used for representing frequency domain resources required to be occupied by the narrowband frequency hopping signal on 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 frequencies used by the narrowband hopping signals at different points in time. In the embodiment of the application, the target communication device may determine the frequency domain resource occupied by the narrowband frequency hopping signal according to the frequency hopping table.
The timing parameter is used for determining the time interval between two adjacent narrowband frequency hopping signals, so as to ensure that the starting time points of the narrowband frequency hopping signals and the broadband frequency hopping signals are synchronous. 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 based on the time-domain resource location and the frequency-domain resource location.
In the embodiment of the present application, 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 present application, accurately determining the position of the first time-frequency resource is a key step for determining the time-frequency resource that needs to be scratched. If the first time-frequency resource position is inaccurate, the scratched time-frequency resource position is inaccurate, so that the broadband fixed-frequency signal and the narrowband frequency-hopping signal are mutually interfered, and the communication quality is affected. 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 first time-frequency resource position, so that the communication quality of the communication equipment is improved.
In one embodiment of the present application, as shown in fig. 8, the process of determining, by the target communication device, whether puncturing is required includes the following steps:
in step 801, the target communication device detects whether the narrowband hopping signal and the wideband fixed frequency signal interfere with each other according to the first time-frequency resource location and the second time-frequency resource location.
In this embodiment of the present application, after the target communication device acquires the first time-frequency resource location and the second time-frequency resource location, it needs to detect whether the narrowband frequency hopping signal and the wideband fixed frequency signal interfere with each other.
Wherein the first time-frequency resource position and the second time-frequency resource position overlap, namely, the first time-frequency resource position is indicated to exist a narrowband frequency hopping signal and a broadband frequency-fixing signal at the same time. Such that the signal receiving device cannot identify the signal at the first video asset location, i.e. the narrowband frequency hopping signal and the wideband frequency fixing 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 indicated by a dashed line in fig. 6, C1 represents a first time-frequency resource position occupied by the narrowband hopping signal, C2 represents a second time-frequency resource position occupied by the wideband fixed-frequency signal, and since C1 and C2 do not overlap, it is determined that the narrowband hopping signal does not interfere with the wideband fixed-frequency signal.
As shown in the dashed line D area in fig. 6, where D1 represents a first time-frequency resource location occupied by the narrowband frequency hopping signal, D2 represents a second time-frequency resource location occupied by the wideband frequency hopping signal, and since D1 is located in D2, that is, the first time-frequency resource location and the second time-frequency resource location overlap, it is determined that the narrowband frequency hopping signal and the wideband frequency hopping signal interfere with each other.
In step 802, if the narrowband hopping signal and the wideband fixed-frequency signal interfere with each other, the target communication device determines that the second time-frequency resource location needs to be punctured.
In this embodiment of the present application, under the condition that the narrowband frequency hopping signal and the wideband frequency-fixing signal will interfere with each other, the target communication device determines that the second time-frequency resource position needs to be subjected to the punching processing, and through the punching processing, only the narrowband frequency hopping signal exists at the punching position, thereby avoiding the mutual interference between the narrowband frequency hopping signal and the wideband frequency-fixing signal.
In the embodiment of the present application, in different time domains, whether there is interference between the narrowband frequency hopping signal and the wideband frequency hopping signal may not be the same, if they do not interfere with each other, the target communication device may continue signal processing in the next signal period, without punching the second time-frequency resource in each signal processing period, thereby reducing the data operand.
In an alternative implementation, as shown in fig. 9, fig. 9 shows a schematic diagram of a method for puncturing at a second time-frequency resource location. The method comprises the following steps:
in step 901, the target communication device acquires the target sub-carrier located at the puncturing position at the second time-frequency resource position.
In this embodiment of the present application, both 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 in connection with fig. 6, the time-frequency resources of the second time-frequency resource location are made up of a plurality of subcarriers arranged consecutively. The target communication device may determine a target subcarrier in the second video resource location at the puncture location based on the puncture location.
Alternatively, 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, where the wideband frequency hopping signal needs to be in a multi-carrier mode.
Alternatively, 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 target subcarriers.
Since the puncturing positions in fig. 11 do not fully occupy the sub-carriers E and F, and according to the above method, the sub-carriers E and F need to be determined as target sub-carriers, which causes unnecessary waste of carriers of the wideband fixed frequency signal. Based on this, the embodiment of the present application designs a frame structure for the narrowband hopping signal and the wideband fixed frequency signal, respectively.
As shown in fig. 12, the frame length of the signal frame of the narrowband hopping signal is an integer multiple of the frame length of the signal frame of the wideband fixed-frequency signal. The time slot length of the signal frame of the narrowband hopping signal is an integer multiple of the time slot length of the signal frame of the wideband fixed frequency signal. The frame structures of the two signals can be aligned in an 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 sub-carriers in an integer multiple manner, in which case, the relation 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 sub-carriers in the area covered by the puncturing position as the target sub-carriers.
In step 902, the target communication device performs muting processing on the target subcarriers.
In the embodiment of the present application, the target communication device performs silence processing on the target subcarrier in the wideband fixed-frequency signal, that is, the target subcarrier in the wideband fixed-frequency signal does not carry a signal. Only a narrowband frequency hopping signal is arranged at the punching position, and a broadband frequency fixing signal is not arranged, 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 steps in the flowcharts of fig. 4 to 9 are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps of fig. 4 to 9 may include a plurality of steps or stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the execution of the steps or stages is not necessarily sequential, but may be performed in turn or alternately with at least a portion of the steps or stages of other steps or other steps.
In one embodiment, as shown in fig. 14, a signal processing apparatus 1400 is provided, where the signal processing apparatus is 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 a frequency band occupied by the wideband frequency-fixing signal, where the signal processing apparatus includes: a first acquisition module 1401, a second acquisition module 1402 and a processing module 1403, wherein:
a first obtaining module 1401, configured to obtain frequency hopping information of a narrowband frequency hopping signal, and determine a first time-frequency resource location that needs to be occupied by the narrowband frequency hopping signal according to the frequency hopping information;
a second obtaining module 1402, configured to obtain a second time-frequency resource location occupied by the wideband fixed-frequency signal;
a processing module 1403, configured to determine, when it is determined that the second time-frequency resource location needs to be subjected to the puncturing process, 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 perform puncturing on 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 acquiring module 1401 is specifically configured to:
Determining the time domain resource position and the 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 or not according to the first time-frequency resource position and the second time-frequency resource position;
if the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other, determining the position of the second time-frequency resource needs to be perforated.
In one embodiment, the processing module 1403 is specifically configured to:
acquiring a target subcarrier at a punching position on a second time-frequency resource position;
and carrying out silence processing on the target sub-carrier.
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 an integer 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 hopping signal is an integer multiple of the time slot length of the signal frame of the wideband 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:
the puncturing position is transmitted to the signal receiving device for the signal receiving device to receive the narrowband frequency-hopped signal at the puncturing position.
For specific limitations of the signal processing apparatus, reference may be made to the above limitations of the signal processing method, and no further description is given here. Each of the modules in the above-described signal processing apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the communication device, or may be stored in software in a memory in the communication device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment of the present application, a communication device is provided, the internal structure of which 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 configured to transmit a narrowband hopping signal and a wideband fixed frequency signal. The processor is configured to provide computing and control capabilities. The memory includes a non-volatile 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 the operating system and computer programs in the non-volatile storage media. The computer program is executed by a processor to implement a signal processing method.
It will be appreciated by those skilled in the art that the structure shown in fig. 15 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the communication device to which the present application is applied, and that a particular communication device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a communication device is provided that includes a memory and a processor, the memory storing a computer program that when executed by the processor implements:
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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position.
In one embodiment, the frequency hopping information includes a frequency hopping table and timing parameters of the narrowband frequency hopping signal, and the computer program when executed by the processor is further executable to:
Determining the time domain resource position and the 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;
if the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other, determining the position of the second time-frequency resource needs to be perforated.
In one embodiment, the computer program when executed by the processor may further implement:
acquiring a target subcarrier at a punching position on a second time-frequency resource position;
and carrying out silence processing on the target sub-carrier.
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 an integer 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 hopping signal is an integer multiple of the time slot length of the signal frame of the wideband fixed frequency 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:
the puncturing position is transmitted to the signal receiving device for the signal receiving device to receive the narrowband frequency-hopped signal at the puncturing position.
The implementation principle and technical effects of the communication device provided in the embodiment of the present application are similar to those of the foregoing method embodiment, and are not described herein again.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position.
In one embodiment, the frequency hopping information includes a frequency hopping table and timing parameters of the narrowband frequency 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 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 may further implement the following steps when executed by a processor:
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;
if the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other, determining the position of the second time-frequency resource needs to be perforated.
In one embodiment, the computer program may further implement the following steps when executed by a processor:
acquiring a target subcarrier at a punching position on a second time-frequency resource position;
and carrying out silence processing on the target sub-carrier.
In one embodiment, the computer program may further implement the following steps when executed by a processor:
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 broadband fixed frequency signal;
The time slot length of the signal frame of the narrowband hopping signal is an integer multiple of the time slot length of the signal frame of the wideband fixed frequency signal.
In one embodiment, the computer program may further implement the following steps when executed by a processor:
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 may further implement the following steps when executed by a processor:
the puncturing position is transmitted to the signal receiving device for the signal receiving device to receive the narrowband frequency-hopped signal at the puncturing position.
The computer readable storage medium provided in this embodiment has similar principles and technical effects to those of the above method embodiment, and will not be described herein.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A signal processing method, applied to a target communication device, where the target communication device is configured to send a narrowband hopping signal and a wideband fixed frequency signal, and a frequency band occupied by the narrowband hopping signal overlaps a frequency band occupied by the wideband fixed frequency signal, where the method includes:
acquiring frequency hopping information of a narrowband frequency hopping signal, and determining 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 is determined to need to be subjected to punching processing, 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, and punching on the second time-frequency resource position according to the punching position.
2. The method of claim 1, wherein the hopping information includes a hopping table and timing parameters for the narrowband hopping signal, and wherein the determining the first time-frequency resource location to be occupied by the narrowband hopping signal based on the hopping information comprises:
determining the time domain resource position and the 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 puncture 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 or not according to the first time-frequency resource position and the second time-frequency resource position;
if the narrowband frequency hopping signal and the broadband fixed frequency signal interfere with each other, determining that the second time-frequency resource position needs to be subjected to punching processing.
4. The method of claim 1, wherein said puncturing at said second time-frequency resource location based on said puncturing location comprises:
acquiring a target subcarrier at the punching position on the second time-frequency resource position;
and carrying out silence processing on the target sub-carrier.
5. The method according to claim 1 or 4, characterized in that the method further comprises:
the frame length of the signal frame of the narrowband frequency hopping signal is an 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 an integer multiple of the time slot length of the signal frame of the broadband fixed frequency signal.
6. The method according to claim 1, wherein 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.
7. The method according to claim 1, wherein the method further comprises:
and transmitting the punching position to a signal receiving device so that the signal receiving device receives the narrowband frequency hopping signal at the punching position.
8. A signal processing apparatus, applied to a target communication device, the target communication device configured to transmit a narrowband hopping signal and a wideband fixed frequency signal, where a frequency band occupied by the narrowband hopping signal overlaps a frequency band occupied by the wideband fixed frequency signal, the apparatus comprising:
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 required to be 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 is determined to need 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, implements the method of any of claims 1 to 7.
10. A computer readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, implements the method according to any of claims 1 to 7.
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