CN110649954A - Communication method, device and equipment for same-frequency multi-level transfer - Google Patents
Communication method, device and equipment for same-frequency multi-level transfer Download PDFInfo
- Publication number
- CN110649954A CN110649954A CN201810680762.9A CN201810680762A CN110649954A CN 110649954 A CN110649954 A CN 110649954A CN 201810680762 A CN201810680762 A CN 201810680762A CN 110649954 A CN110649954 A CN 110649954A
- Authority
- CN
- China
- Prior art keywords
- air interface
- interface message
- frequency
- same
- transmitting power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0652—Synchronisation among time division multiple access [TDMA] nodes, e.g. time triggered protocol [TTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses a communication method, a device and equipment for same-frequency multi-level transfer, which comprises the following steps that first same-frequency transfer equipment receives an air interface message sent by second same-frequency transfer equipment; calculating the transmitting power of the air interface message in the same frequency transfer; updating the same-frequency transit link control frame carried in the air interface message, and generating an updated air interface message; and forwarding the updated air interface message by the transmitting power. Based on the method, the device and the equipment, the multi-stage forwarding of the signals can be realized, and the communication distance and the range are further expanded.
Description
Technical Field
The invention relates to the technical field of private network communication, in particular to a communication method, a device and equipment for same-frequency multi-level transfer.
Background
In the field of private network communication, when a digital interphone uses single-frequency-point direct communication, the direct mode communication distance cannot meet the requirement of remote communication due to the limitation of the transmitting power of the interphone. Under the condition that the rotary table is not used, the single frequency point is used for expanding the communication distance, and the requirement of saving frequency spectrum resources always exists.
As shown in fig. 1, the same-frequency relay technology implemented in TDMA (Time Division Multiple Access, chinese full name) system at present is shown, where a is a calling terminal, SFR1 is a relay device, B is a called terminal, and S1 and S2 are 2 Time slots required for same-frequency relay. Based on the scheme, a sends signals to SFRs 1 and B through a time slot S2, the SFR1 receives the signals sent by a through a time slot S1 and forwards the signals to B through a time slot S2, and B receives the signals sent by a through a time slot S1 and receives the signals forwarded by the SFR1 through a time slot S2, so that B can preferentially select one signal from the signals to process, and the coverage distance is increased by about twice.
However, in the prior art, although the technology of realizing the same-frequency relay by using a single relay device can increase the coverage distance by about twice, in some private network communication scenarios, such as a long and narrow tunnel, or a wide outdoor mountain area which cannot be powered, or a user who only has a single frequency point resource needs a longer communication distance. Under the above scenario, there is a place that can not be covered by a single relay device, so that the technology of realizing same-frequency relay by a single relay device cannot meet the requirement of further expanding the communication distance and range based on a single frequency point.
Therefore, there is a need in the art for a novel common-frequency relay technology to further extend the communication distance and range based on a single frequency point.
Disclosure of Invention
In view of this, embodiments of the present invention provide a communication method, apparatus, and device for same-frequency multi-level relay, which can implement multi-level forwarding of signals, and further extend a communication distance and range.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a communication method for same-frequency multi-level transfer, the method comprising:
the first co-frequency transfer equipment receives an air interface message sent by the second co-frequency transfer equipment;
calculating the transmitting power of the air interface message in the same frequency transfer;
updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message;
and forwarding the updated air interface message by the transmitting power.
Optionally, the calculating the transmission power of the air interface message in the same frequency includes:
detecting a field intensity value of an air interface message received by the first same-frequency transfer equipment;
acquiring a field intensity value of an air interface message received by the second same-frequency relay equipment from a same-frequency relay link control frame in the air interface message, and acquiring a transmitting power when the second same-frequency relay equipment transmits the air interface message;
calculating a field intensity difference value between the field intensity value of the air interface message received by the first same-frequency transfer equipment and the field intensity value of the air interface message received by the second same-frequency transfer equipment;
determining a target transmitting power adjusting stage number corresponding to the field intensity difference value according to a preset transmitting power adjusting strategy;
and adjusting the transmitting power of the second same-frequency transfer equipment when transmitting the air interface message based on the target transmitting power adjustment level, and obtaining the transmitting power of the first same-frequency transfer equipment for transferring the air interface message in the same frequency.
Optionally, after obtaining the transmission power of the air interface message in the co-frequency transfer of the first co-frequency transfer device, the method further includes:
and judging whether the transmitting power is in a preset power interval, and performing same-frequency transfer on the air interface message when the transmitting power is in the preset power interval.
Optionally, the common-frequency relay link control frame in the air interface message further includes satellite positioning data of the second common-frequency relay device, and the method further includes:
detecting satellite positioning data of the first coaxial transit equipment;
when the satellite positioning data of the first in-frequency transfer device and the satellite positioning data of the second in-frequency transfer device are effective, calculating the distance between the first in-frequency transfer device and the second in-frequency transfer device;
and when the distance between the first same-frequency relay equipment and the second same-frequency relay equipment is greater than a preset distance and the transmitting power is within a preset power interval, performing same-frequency relay on the air interface message.
Optionally, the control frame of the same-frequency transit link in the air interface message further includes the number of times of forwarding the air interface message, and the method includes:
and when the forwarding times of the air interface message reach a preset threshold value, not performing same-frequency transfer on the air interface message.
Optionally, the updating the control frame of the same-frequency transit link in the air interface message to generate an updated air interface message includes:
adding one to the forwarding times of the air interface message contained in the same-frequency transit link control frame in the air interface message;
updating the satellite positioning data of the second in-frequency relay device contained in the in-frequency relay link control frame in the air interface message to the satellite positioning data of the first in-frequency relay device;
updating the field intensity value of the air interface message received by the second same-frequency relay device, which is contained in the same-frequency relay link control frame in the air interface message, to the field intensity value of the air interface message received by the first same-frequency relay device;
and updating the transmitting power of the air interface message when the second same-frequency transfer equipment sends the air interface message, which is contained in the same-frequency transfer link control frame in the air interface message, to the transmitting power of the first same-frequency transfer equipment in the same-frequency transfer.
Optionally, the power step between two adjacent transmit power adjustment stages is 0.5W or 1W.
Optionally, the method further includes:
acquiring satellite system time;
and synchronizing the system time of the satellite system according to the satellite system time.
A communication device for same-frequency multi-level relay, the device comprising:
a receiving unit, configured to receive an air interface message sent by a second in-frequency transit device;
the calculating unit is used for calculating the transmitting power of the air interface message in the same frequency transfer;
an updating unit, configured to update the common-frequency transit link control frame in the air interface message, and generate an updated air interface message;
and a sending unit, configured to forward the updated air interface message with the transmission power.
An in-frequency transit device, the in-frequency transit device comprising:
a communication component for receiving an air interface message;
the processor is used for calculating the transmitting power of the air interface message in the same frequency transfer; updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message;
the communication component is further configured to forward the updated air interface message with the transmit power.
Based on the technical scheme, the embodiment of the invention discloses a communication method, a device and equipment for same-frequency multi-level transfer, which comprises the following steps that first same-frequency transfer equipment receives an air interface message sent by second same-frequency transfer equipment; calculating the transmitting power of the air interface message in the same frequency transfer; updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message; and forwarding the updated air interface message by the transmitting power. Based on the method, the device and the equipment, the multi-stage forwarding of the signals can be realized, and the communication distance and the range are further expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of an implementation of a common-frequency relay technology in the prior art;
fig. 2 is a schematic structural diagram of a novel common-frequency transit system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a communication method for same-frequency multi-level transfer according to an embodiment of the present invention;
fig. 4 is a timing diagram of an air interface for in-frequency forwarding according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a transmission method of a control frame of a same-frequency transit link according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a communication device for same-frequency multi-level transfer according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a common-frequency transit apparatus disclosed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to better utilize limited frequency spectrum resources and simultaneously expand communication distance and range, the invention provides a novel same-frequency transfer technology realized based on a TDMA (Time Division Multiple Access; Chinese full name: Time Division Multiple Access) system. The implementation of the novel same-frequency relay technology is based on a novel same-frequency relay system, please refer to fig. 2, fig. 2 is a schematic structural diagram of the novel same-frequency relay system provided by the embodiment of the present invention, the system includes A, N same-frequency relay devices SFR1, SFR2, SFR3, … …, SFRN (N is a positive integer greater than or equal to 2), and a receiver device B, in a normal situation, the initiator A, N same-frequency relay devices and the receiver device B can both search for satellites to obtain satellite data, the satellite data is used to indicate the geographical location of each device, the initiator A, N same-frequency relay devices and the receiver device B can also obtain satellite system time, and synchronize their own system time according to the satellite system time to synchronize the N same-frequency relay devices to forward signals, forming a signal superposition. It should be noted that the initiator device A, N co-frequency relay devices SFR1, SFR2, SFR3, and … …, SFRN (N is a positive integer greater than or equal to 2), and the receiver device B may be the same type of terminal device supporting the duplex operating mode, such as a handheld interphone, a vehicle interphone, and the like. The following embodiment will be used to describe the novel same-frequency relay technology provided by the present invention in detail.
Referring to fig. 3, fig. 3 is a schematic flow chart of a communication method of common-frequency multi-level relay according to an embodiment of the present invention, where an execution main body of the method is a first common-frequency relay device, the first common-frequency relay device is a common-frequency relay device that does not directly communicate with a sender device a among N common-frequency relay devices included in a novel common-frequency relay system, that is, the first common-frequency relay device has a higher-level common-frequency relay device, that is, a second common-frequency relay device, and the second common-frequency relay device can relay an air interface message to the first common-frequency relay device in common-frequency, and it should be noted that the implementation of this embodiment is based on the premise that the first common-frequency relay device itself starts a common-frequency multi-level relay function and is in an idle state, and the method:
step S100, receiving an air interface message;
the air interface message is initially initiated by an initiator, then is subjected to same-frequency multi-level transfer through same-frequency transfer equipment, and finally is obtained by receiver equipment. In this embodiment, the air interface message received by the first in-frequency relay device is sent by the second in-frequency relay device. As shown in fig. 4, an air interface message initiated by an initiator device includes six voice superframes HDR LC (Header Link Control Frame) and A, B, C, D, E, F, and an air interface message for performing Same-Frequency multi-level relay by the Same-Frequency relay device includes SFR LC (save Frequency relay Link Control Frame) in addition to six voice superframes HDR LC and A, B, C, D, E, F, according to an air interface timing diagram for Same-Frequency relay forwarding provided in the embodiment of the present invention. As shown in fig. 5, in the present invention, the sender may embed B, C, D, E the SFR _ LC into the four voice superframes for transmission, and after the four voice superframes are collected by the receiver B, C, D, E, the complete SFR _ LC may be parsed. The frame format of HDR _ LC is shown in table 1 below, and the frame format of SFR _ LC is shown in tables 2 and 3 below.
Table 1 frame format for HDR LC
TABLE 2SFR _ LC (1) frame Format
TABLE 3SFR _ LC (2) frame Format
It should be noted that, in practical application, the air interface message received by the first co-frequency relay device is not necessarily all sent by the second co-frequency relay device, and the air interface message received by the first co-frequency relay device may need to be processed by using a common terminal processing procedure, and may also need to be relayed by the same frequency. The present embodiment further provides a method for determining, by a first co-frequency relay device, whether the air interface message is an air interface message sent by a second co-frequency relay device, which includes:
judging whether the air interface message is the call of the first same-frequency transfer equipment or not to obtain a first judgment result;
specifically, it is determined whether the call type of the air interface message is a single call according to a field FLCO (full Link Control opcode) in the HDR _ LC, if the value of the field FLCO is 000000, it indicates that the call type of the air interface message is a group call, if the value of the field FLCO is 000011, it indicates that the call type of the air interface message is a single call, if the call type of the air interface message is a single call, it is continuously determined that the value of a field Target address (Target address) in the HDR _ LC is not matched with the ID of the air interface message itself (i.e., a first on-frequency relay device), and if the value of the field Target address is matched, it is determined that the air interface message is a single call of the air interface message itself.
If the first judgment result indicates that the air interface message is not the call of the first same-frequency transfer equipment, judging whether the air interface message is transferred from the initiator equipment or second same-frequency transfer equipment to obtain a second judgment result; if the second judgment result indicates that the air interface message is forwarded from the initiator device, adding a same-frequency forwarding link control frame in the air interface message and then forwarding the same-frequency forwarding link control frame;
specifically, in this embodiment, whether the air interface message is forwarded from an intra-frequency relay device may be determined through manufacturer numbers (i.e., field Manufacturers IDs in table 1, table 2, and table 3) in HDR _ LC and reserved bits (i.e., field Service Options in table 1) in HDR _ LC in the air interface message, where if the manufacturer number is an ID of a preset manufacturer (e.g., 0X68 shown in table 1, table 2, and table 3) and the reserved bit 2bit is all 1, it indicates that the air interface message is forwarded from the intra-frequency relay device, if the manufacturer number is 0X00 and the reserved bit 2bit is all 0, it indicates that the air interface message is forwarded from an initiator device, and otherwise, it indicates that the air interface message is forwarded from an ordinary terminal or indicates invalid data that cannot be analyzed when the air interface message is forwarded.
And if the second judgment result indicates that the air interface message is forwarded from the second same-frequency forwarding device, determining that the air interface message received by the first same-frequency forwarding device is sent by the second same-frequency forwarding device.
Step S110, calculating the transmitting power of the air interface message in the same frequency;
specifically, the following method may be adopted to calculate the transmission power of the air interface message in the same frequency:
detecting a field intensity value of an air interface message received by the first same-frequency transfer equipment;
acquiring a field intensity value of an air interface message received by the second same-frequency relay equipment from a same-frequency relay link control frame in the air interface message, and acquiring a transmitting power when the second same-frequency relay equipment transmits the air interface message;
calculating a field intensity difference value between the field intensity value of the air interface message received by the first same-frequency transfer equipment and the field intensity value of the air interface message received by the second same-frequency transfer equipment;
determining a target transmitting power adjusting stage number corresponding to the field intensity difference value according to a preset transmitting power adjusting strategy (shown in table 4);
and adjusting the transmitting power of the second same-frequency transfer equipment when transmitting the air interface message based on the target transmitting power adjustment level, and obtaining the transmitting power of the first same-frequency transfer equipment for transferring the air interface message in the same frequency.
TABLE 4 transmit power adjustment strategy
It should be noted that, in this embodiment, the transmit power when the second in-frequency relay device sends the air interface message is adjusted based on the target transmit power adjustment level is linearly adjusted, specifically, the power step between two adjacent transmit power adjustment levels is a specific value, and in this embodiment, 0.5W or 1W is preferred.
Step S120, updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message;
specifically, in this step, the number of times of forwarding the air interface message included in the control frame of the same-frequency relay link in the air interface message needs to be increased by one; updating the satellite positioning data of the second in-frequency relay device contained in the in-frequency relay link control frame in the air interface message to the satellite positioning data of the first in-frequency relay device; updating the field intensity value of the air interface message received by the second same-frequency relay device, which is contained in the same-frequency relay link control frame in the air interface message, to the field intensity value of the air interface message received by the first same-frequency relay device; and updating the transmitting power of the air interface message when the second same-frequency transfer equipment sends the air interface message, which is contained in the same-frequency transfer link control frame in the air interface message, to the transmitting power of the first same-frequency transfer equipment in the same-frequency transfer.
Step S130, forwarding the updated air interface message with the transmission power.
It should be noted that, before forwarding the updated air interface message with the transmission power, it is required to detect whether a signal exists in another time slot, and when no signal exists in another time slot, the updated air interface message is forwarded with the transmission power.
The embodiment discloses a communication method of same-frequency multi-level transfer, which comprises the following steps that first same-frequency transfer equipment receives an air interface message sent by second same-frequency transfer equipment; calculating the transmitting power of the air interface message in the same frequency transfer; updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message; and forwarding the updated air interface message by the transmitting power. Based on the method, the multi-stage forwarding of the signals can be realized, and the communication distance and range are further expanded.
It should be noted that the first co-frequency relay device does not perform co-frequency relay on the air interface message sent by the second co-frequency relay device as long as the air interface message is received, which is described in detail below.
If the same-frequency transfer link control frame in the air interface message does not include the satellite positioning data of the second same-frequency transfer device, after the transmitting power of the same-frequency transfer of the air interface message by the first same-frequency transfer device is obtained, whether the transmitting power is in a preset power interval is judged, when the transmitting power is in the preset power interval, the same-frequency transfer is carried out on the air interface message, otherwise, the same-frequency transfer is not carried out on the air interface message.
If the same-frequency transfer link control frame in the air interface message comprises satellite positioning data of a second same-frequency transfer device, detecting and detecting the satellite positioning data of the first same-frequency transfer device; when the satellite positioning data of the first in-frequency transfer device and the satellite positioning data of the second in-frequency transfer device are effective, calculating the distance between the first in-frequency transfer device and the second in-frequency transfer device; and when the distance between the first same-frequency relay equipment and the second same-frequency relay equipment is greater than a preset distance and the transmitting power is within a preset power interval, performing same-frequency relay on the air interface message.
It should be noted that whether the satellite data of the previous co-frequency relay device (i.e., the second co-frequency relay device) is valid may be determined through a field GPS valid in the SFR _ LC of the air interface message, in this embodiment, if the value of the field GPS valid is 0, it indicates that the satellite data of the previous co-frequency relay device is invalid, and if the value of the field GPS valid is 1, it indicates that the satellite data of the previous co-frequency relay device is valid; in addition, if the satellite signal can be searched by the user, the satellite data of the user is valid, and if the satellite signal cannot be searched by the user, the satellite data of the user is invalid. And when the satellite data of the previous co-frequency transfer equipment and the satellite data of the own are effective, calculating the distance between the own and the previous co-frequency transfer equipment.
Due to the blind forwarding characteristic of the same-frequency forwarding, a plurality of same-frequency forwarding devices are used for forwarding mutual interference which easily causes the same frequency point transmission, and in this embodiment, the mutual interference of the same frequency point transmission can be effectively avoided by judging whether the distance between the first same-frequency forwarding device and the second same-frequency forwarding device is greater than a preset distance.
If the same-frequency relay link control frame in the air interface message also comprises the forwarding times of the air interface message, when the forwarding times of the air interface message reach a preset threshold value, the same-frequency relay is not performed on the air interface message.
Specifically, the serial number of the forwarding device node carried in the SFR _ LC in the air interface message (that is, the value of the field SFR number in table 2) is obtained, and it is determined whether the serial number of the forwarding device node carried in the SFR _ LC exceeds the maximum forwarding node number (MAX _ NUM) or not, so as to determine whether the forwarding frequency of the air interface message exceeds the maximum forwarding frequency or not.
It should be noted that, in the present invention, the size of the field SFR number in table 2 is 4 bits, so in the present invention, the maximum forwarding node number may be set to 15, and in practical application, the maximum forwarding node number is not limited to this, and an appropriate value may be set according to practical situations.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device for same-frequency multi-level relay disclosed in an embodiment of the present invention, where the device is applied to a first piece of coaxial relay equipment, and the device includes:
a receiving unit 10, configured to receive an air interface message sent by a second in-frequency transit device;
a calculating unit 11, configured to calculate transmit power of the air interface message in the same frequency;
an updating unit 12, configured to update the common-frequency transit link control frame in the air interface message, and generate an updated air interface message;
a sending unit 13, configured to forward the updated air interface message with the transmission power.
Optionally, the computing unit is specifically configured to detect a field strength value of an air interface message received by the first coaxial transit device;
acquiring a field intensity value of an air interface message received by the second same-frequency relay equipment from a same-frequency relay link control frame in the air interface message, and acquiring a transmitting power when the second same-frequency relay equipment transmits the air interface message;
calculating a field intensity difference value between the field intensity value of the air interface message received by the first same-frequency transfer equipment and the field intensity value of the air interface message received by the second same-frequency transfer equipment;
determining a target transmitting power adjusting stage number corresponding to the field intensity difference value according to a preset transmitting power adjusting strategy;
and adjusting the transmitting power of the second same-frequency transfer equipment when transmitting the air interface message based on the target transmitting power adjustment level, and obtaining the transmitting power of the first same-frequency transfer equipment for transferring the air interface message in the same frequency.
Optionally, the apparatus further comprises:
a determining unit, configured to determine whether the transmit power is within a preset power interval after obtaining the transmit power of the air interface message in the same-frequency relay by the first same-frequency relay device, and perform the same-frequency relay on the air interface message when the transmit power is within the preset power interval.
Optionally, the same-frequency relay link control frame in the air interface message further includes satellite positioning data of the second same-frequency relay device, and the determining unit is further configured to detect the satellite positioning data of the first same-frequency relay device; when the satellite positioning data of the first in-frequency transfer device and the satellite positioning data of the second in-frequency transfer device are effective, calculating the distance between the first in-frequency transfer device and the second in-frequency transfer device; and when the distance between the first same-frequency relay equipment and the second same-frequency relay equipment is greater than a preset distance and the transmitting power is within a preset power interval, performing same-frequency relay on the air interface message.
Optionally, the common-frequency relay link control frame in the air interface message further includes the number of times of forwarding the air interface message, and the determining unit is further configured to not perform common-frequency relay on the air interface message when the number of times of forwarding the air interface message reaches a preset threshold.
Optionally, the updating unit is specifically configured to: adding one to the forwarding times of the air interface message contained in the same-frequency transit link control frame in the air interface message;
updating the satellite positioning data of the second in-frequency relay device contained in the in-frequency relay link control frame in the air interface message to the satellite positioning data of the first in-frequency relay device;
updating the field intensity value of the air interface message received by the second same-frequency relay device, which is contained in the same-frequency relay link control frame in the air interface message, to the field intensity value of the air interface message received by the first same-frequency relay device;
and updating the transmitting power of the air interface message when the second same-frequency transfer equipment sends the air interface message, which is contained in the same-frequency transfer link control frame in the air interface message, to the transmitting power of the first same-frequency transfer equipment in the same-frequency transfer.
It should be noted that specific function implementation of each unit is already described in detail in the method embodiment, and this embodiment is not described again.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a common-frequency relay device disclosed in an embodiment of the present invention, where the common-frequency relay device specifically includes: a communication section 20 and a processor 21.
The processor is used for executing the same-frequency multi-level transfer method disclosed by the embodiment of the invention;
the communication component is further configured to forward the updated air interface message with the transmit power.
In summary, the following steps:
the embodiment of the invention discloses a communication method, a device and equipment for same-frequency multi-level transfer, which comprises the following steps that first same-frequency transfer equipment receives an air interface message sent by second same-frequency transfer equipment; calculating the transmitting power of the air interface message in the same frequency transfer; updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message; and forwarding the updated air interface message by the transmitting power. Based on the method, the device and the equipment, the multi-stage forwarding of the signals can be realized, and the communication distance and the range are further expanded.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A communication method for same-frequency multi-level transfer is characterized in that the method comprises the following steps:
the first co-frequency transfer equipment receives an air interface message sent by the second co-frequency transfer equipment;
calculating the transmitting power of the air interface message in the same frequency transfer;
updating the same-frequency transit link control frame in the air interface message, and generating an updated air interface message;
and forwarding the updated air interface message by the transmitting power.
2. The method according to claim 1, wherein the calculating the transmission power of the air interface message in the same frequency includes:
detecting a field intensity value of an air interface message received by the first same-frequency transfer equipment;
acquiring a field intensity value of an air interface message received by the second same-frequency relay equipment from a same-frequency relay link control frame in the air interface message, and acquiring a transmitting power when the second same-frequency relay equipment transmits the air interface message;
calculating a field intensity difference value between the field intensity value of the air interface message received by the first same-frequency transfer equipment and the field intensity value of the air interface message received by the second same-frequency transfer equipment;
determining a target transmitting power adjusting stage number corresponding to the field intensity difference value according to a preset transmitting power adjusting strategy;
and adjusting the transmitting power of the second same-frequency transfer equipment when transmitting the air interface message based on the target transmitting power adjustment level, and obtaining the transmitting power of the first same-frequency transfer equipment for transferring the air interface message in the same frequency.
3. The method according to claim 2, wherein after the obtaining of the transmission power for the air interface message in the co-frequency relay by the first co-frequency relay device, the method further includes:
and judging whether the transmitting power is in a preset power interval, and performing same-frequency transfer on the air interface message when the transmitting power is in the preset power interval.
4. The method according to claim 3, wherein the intra-frequency transit link control frame in the air interface message further includes satellite positioning data of the second intra-frequency transit apparatus, and the method further includes:
detecting satellite positioning data of the first coaxial transit equipment;
when the satellite positioning data of the first in-frequency transfer device and the satellite positioning data of the second in-frequency transfer device are effective, calculating the distance between the first in-frequency transfer device and the second in-frequency transfer device;
and when the distance between the first same-frequency relay equipment and the second same-frequency relay equipment is greater than a preset distance and the transmitting power is within a preset power interval, performing same-frequency relay on the air interface message.
5. The method according to claim 1, wherein the same-frequency relay link control frame in the air interface message further includes the number of times of forwarding the air interface message, and the method includes:
and when the forwarding times of the air interface message reach a preset threshold value, not performing same-frequency transfer on the air interface message.
6. The method according to any one of claims 1 to 5, wherein the updating the in-channel relay link control frame in the air interface message includes:
adding one to the forwarding times of the air interface message contained in the same-frequency transit link control frame in the air interface message;
updating the satellite positioning data of the second in-frequency relay device contained in the in-frequency relay link control frame in the air interface message to the satellite positioning data of the first in-frequency relay device;
updating the field intensity value of the air interface message received by the second same-frequency relay device, which is contained in the same-frequency relay link control frame in the air interface message, to the field intensity value of the air interface message received by the first same-frequency relay device;
and updating the transmitting power of the air interface message when the second same-frequency transfer equipment sends the air interface message, which is contained in the same-frequency transfer link control frame in the air interface message, to the transmitting power of the first same-frequency transfer equipment in the same-frequency transfer.
7. The method of claim 2, wherein the power step between two adjacent transmit power adjustment stages is 0.5W or 1W.
8. The method of claim 1, further comprising:
acquiring satellite system time;
and synchronizing the system time of the satellite system according to the satellite system time.
9. A communication device for same-frequency multi-level relay, the device comprising:
a receiving unit, configured to receive an air interface message sent by a second in-frequency transit device;
the calculating unit is used for calculating the transmitting power of the air interface message in the same frequency transfer;
an updating unit, configured to update the common-frequency transit link control frame in the air interface message, and generate an updated air interface message;
and a sending unit, configured to forward the updated air interface message with the transmission power.
10. The same-frequency transfer equipment is characterized by comprising the following components:
a communication component for receiving an air interface message;
a processor for performing the method of any one of claims 1 to 8;
the communication component is further configured to forward the updated air interface message with the transmit power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810680762.9A CN110649954B (en) | 2018-06-27 | 2018-06-27 | Communication method, device and equipment for same-frequency multi-level transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810680762.9A CN110649954B (en) | 2018-06-27 | 2018-06-27 | Communication method, device and equipment for same-frequency multi-level transfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110649954A true CN110649954A (en) | 2020-01-03 |
| CN110649954B CN110649954B (en) | 2021-12-24 |
Family
ID=68988717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810680762.9A Active CN110649954B (en) | 2018-06-27 | 2018-06-27 | Communication method, device and equipment for same-frequency multi-level transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110649954B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070249283A1 (en) * | 2006-04-21 | 2007-10-25 | Richard Neil Braithwaite | System and method for estimation and compensation of radiated feedback coupling in a high gain repeater |
| CN104378290A (en) * | 2014-10-31 | 2015-02-25 | 北京盈进科技有限公司 | Message forwarding method and device |
| CN104735628A (en) * | 2013-12-18 | 2015-06-24 | 易讯科技股份有限公司 | Wireless support component system and method for fire scene in special area |
-
2018
- 2018-06-27 CN CN201810680762.9A patent/CN110649954B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070249283A1 (en) * | 2006-04-21 | 2007-10-25 | Richard Neil Braithwaite | System and method for estimation and compensation of radiated feedback coupling in a high gain repeater |
| CN104735628A (en) * | 2013-12-18 | 2015-06-24 | 易讯科技股份有限公司 | Wireless support component system and method for fire scene in special area |
| CN104378290A (en) * | 2014-10-31 | 2015-02-25 | 北京盈进科技有限公司 | Message forwarding method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110649954B (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9532325B2 (en) | Method of forming N-hop synchronous network for D2D communication and devices using the same | |
| US11832225B2 (en) | Method and device for configuring relay resource | |
| JP4875156B2 (en) | Repeater | |
| US8040898B2 (en) | Wireless terminal, access point, system provided with the same, and wireless communication method | |
| WO2024000193A1 (en) | Relay communication method and apparatus, device, and storage medium | |
| US20100261479A1 (en) | Radio terminal and radio communication method | |
| CN107124363B (en) | Message broadcasting method and device | |
| US20230156756A1 (en) | Method and apparatus for sending auxiliary information, method and apparatus for receiving auxiliary information, terminal, and network side device | |
| US20100285825A1 (en) | Communication | |
| JP2006121696A (en) | Communication system and traffic transmission method thereof | |
| CN110649954B (en) | Communication method, device and equipment for same-frequency multi-level transfer | |
| US20200296650A1 (en) | Electronic apparatus, wireless communication method and computer-readable medium | |
| JP2020518180A (en) | Method and apparatus for signal processing | |
| US10368388B2 (en) | Method for peer to peer communication and related communication device | |
| CN106888436A (en) | A kind of method of reliable broadcast in wireless Ad Hoc network | |
| US11134443B2 (en) | Systems and methods for generating and transmitting short low power wake-up request (WUR) frames in a wireless communication system | |
| CN113891393A (en) | Link self-adaptive transmission method, device, equipment and storage medium | |
| US11394487B2 (en) | Non-orthogonal multiple access (NOMA) using rate based receivers | |
| CN106686645B (en) | Method and system for improving throughput of multi-hop transmission link | |
| CN101466104A (en) | Method, system and device for detecting down interference source | |
| JP2005124121A (en) | Radio communication apparatus | |
| CN113473481B (en) | Efficient communication networking access system for resource-limited scene | |
| WO2024060296A1 (en) | Method and apparatus of supporting state transition of network node | |
| WO2023065260A1 (en) | Wireless apparatus and method for mobile network power saving | |
| CN118646474A (en) | Communication method, communication device, and computer storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |