CN113497658A - Anti-interference method and device for complex communication scene, storage medium and terminal - Google Patents

Anti-interference method and device for complex communication scene, storage medium and terminal Download PDF

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CN113497658A
CN113497658A CN202010266858.8A CN202010266858A CN113497658A CN 113497658 A CN113497658 A CN 113497658A CN 202010266858 A CN202010266858 A CN 202010266858A CN 113497658 A CN113497658 A CN 113497658A
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CN113497658B (en
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陈咪咪
周化雨
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract

An anti-interference method and device, a storage medium and a terminal for a complex communication scene are provided, wherein the method comprises the following steps: transmitting a first type signal to indicate that a current channel is in an idle state; wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent. The scheme of the invention can effectively solve the hidden node problem in the complex communication scene such as the coexistence scene of multiple communication systems, and improve the reliability of the communication system.

Description

Anti-interference method and device for complex communication scene, storage medium and terminal
Technical Field
The invention relates to the technical field of communication, in particular to an anti-interference method and device for a complex communication scene, a storage medium and a terminal.
Background
The device adopting a New wireless-Unlicensed Spectrum (NR-U) technology works in an Unlicensed frequency band, and since devices of other systems such as Wi-Fi devices also work in the Unlicensed frequency band, the NR-U device needs to consider the interference problem of devices of other systems during communication.
As shown in fig. 1, in the NR-U system, a base station (g-NodeB, gNB)11 wants to perform downlink communication with a User Equipment (UE) 12, and a wireless Access Point (AP) 13 is communicating with a UE 12. The signal coverage of the base station 11 is shown as a range a1 in the figure, the signal coverage of the UE12 is shown as a range a2 in the figure, and the signal coverage of the AP13 is shown as a range a3 in the figure.
Since the base station 11 is too far away from the AP13, it is not in the listening range of the other party. Therefore, the bs 11 does not sense that the AP13 is occupying the channel when sensing first and then sending (Listen Before Talk, LBT for short), and the bs 11 starts downlink communication with the UE12 after LBT is successful.
As such, the AP13 and the base station 11 have collided at the receiving UE12, resulting in the UE12 failing to successfully receive the message of the base station 11.
Alternatively, the AP13 sends a short Request To Send (RTS) frame when it wants To communicate with the UE12, and the UE12 feeds back a short Clear To Send (CTS) frame because it does not know the base station 11 To communicate with. When the AP13 is communicating with the UE12, the base station 11 is also in downlink communication with the UE 12. At this time, a collision is also generated at the receiving end UE 12.
In the above scenario, AP12 is its hidden node for base station 11.
The prior art can not provide a better solution to the problem of hidden nodes, and the communication reliability is influenced.
Disclosure of Invention
The technical problem solved by the invention is how to solve the hidden node problem in a complex communication scene such as a multi-communication system coexistence scene and the like, and the reliability of the communication system is improved.
In order to solve the above technical problem, an embodiment of the present invention provides an interference prevention method for a complex communication scenario, including: transmitting a first type signal to indicate that a current channel is in an idle state; wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
Optionally, before sending the first type of signal, the interference prevention method further includes: and receiving channel state request information sent by first equipment, wherein the channel state request information is used for confirming the channel state of the current channel.
Optionally, the third-party device is a receiving device other than the first device.
Optionally, the first type of signal is a first preamble, where a sequence format of the first preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by both the third party device and a first device, where the first device is a device that uses the current channel for communication.
Optionally, the interference prevention method further includes: and after the communication with the first equipment is finished, sending a second type of signal to indicate that the channel occupation is finished, wherein the second type of signal can be identified by one or more equipment, and the first equipment is the equipment which uses the current channel for communication.
Optionally, the second type of signal is a second preamble, where a sequence format of the second preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by both the third party device and the first device.
Optionally, the first type of signal and the second type of signal are both preambles, and the sequences of the first type of signal and the second type of signal are orthogonal.
Optionally, the first type of signal further includes: channel occupancy information, wherein the channel occupancy information is identifiable by one or more devices, and the channel occupancy information is at least used for indicating a channel occupancy duration of a current channel.
Optionally, the step of transmitting the first type of signal is performed periodically and repeatedly; and/or the step of transmitting the channel occupation information is periodically and repeatedly executed at the same time of transmitting the first type of signals and within the channel occupation duration.
Optionally, the complex communication scenario includes a multiple communication system coexistence scenario, where the multiple communication system includes an NR-U system and a Wi-Fi system.
Optionally, the one or more devices are devices belonging to different communication systems, or the one or more devices are devices belonging to different cells of the same communication system.
Optionally, the third-party device and the first device belong to different communication systems, or the third-party device and the first device belong to different cells in the same communication system, where the first device is a device that uses the current channel for communication.
In order to solve the above technical problem, an embodiment of the present invention further provides an anti-interference method for a complex communication scenario, including: in response to receiving the first type of signal, keeping silent; wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
Optionally, the first type of signal is a first preamble, where a sequence format of the first preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by both the third party device and a first device, where the first device is a device that uses the current channel for communication.
Optionally, the interference prevention method further includes: in response to receiving a second type of signal, the muting is disarmed, wherein the second type of signal is recognizable by one or more devices.
Optionally, the second type of signal is a second preamble, where a sequence format of the second preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by the third party device and a first device together, where the first device is a device that uses the current channel for communication.
Optionally, the first type of signal and the second type of signal are both preambles, and the sequences of the first type of signal and the second type of signal are orthogonal.
Optionally, the first type of signal further includes: channel occupancy information, wherein the channel occupancy information is identifiable by one or more devices, and the channel occupancy information is at least used for indicating a channel occupancy duration of a current channel; the interference prevention method further comprises: and starting timing from the reception of the first type of signals, and removing the silence when the timing duration exceeds the channel occupation duration indicated by the channel occupation information.
Optionally, the first type of signal is sent repeatedly on a periodic basis; and/or, the channel occupation information is sent repeatedly periodically while the first type of signal is sent and within the channel occupation time period.
Optionally, the complex communication scenario includes a multiple communication system coexistence scenario, where the multiple communication system includes an NR-U system and a Wi-Fi system.
Optionally, the one or more devices are devices belonging to different communication systems, or the one or more devices are devices belonging to different cells of the same communication system.
Optionally, the third-party device and the first device belong to different communication systems, or the third-party device and the first device belong to different cells in the same communication system, where the first device is a device that uses the current channel for communication.
In order to solve the above technical problem, an embodiment of the present invention further provides an interference preventing device for a complex communication scenario, including: a sending module, configured to send a first type of signal to indicate that a current channel is in an idle state; wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
In order to solve the above technical problem, an embodiment of the present invention further provides an interference preventing device for a complex communication scenario, including: a keep silent module, responsive to receiving a first type of signal, keeping silent; wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
To solve the above technical problem, an embodiment of the present invention further provides a storage medium having stored thereon computer instructions, which, when executed by a processor, perform the steps of the above method.
In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to perform the steps of the method.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
on the UE side, an embodiment of the present invention provides an interference prevention method for a complex communication scenario, including: transmitting a first type signal to indicate that a current channel is in an idle state; wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
By adopting the scheme of the embodiment, the problem of hidden nodes in complex communication scenes such as a multi-communication system coexistence scene can be effectively solved, and the reliability of the communication system is improved. Specifically, since the first type of signal can be identified by the third-party device, the third-party device can accurately acquire the immediate state of the UE and enter the silent state in time, so as to avoid becoming a hidden node of the device communicating with the UE through the current channel.
Further, in a scene of coexistence of multiple communication systems, since the first-type signal can be identified by devices of different communication systems, the devices of each communication system can accurately acquire the instant state of the UE, and select a suitable response mechanism according to their own roles, thereby eliminating potential hidden nodes.
On the third-party device side, an embodiment of the present invention further provides an anti-interference method for a complex communication scenario, including: in response to receiving the first type of signal, keeping silent; wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
Therefore, in response to receiving the first type of signals, the third-party equipment can accurately acquire the instant state of the UE and keep silent in time, so as to avoid conflict at the UE end, and improve the communication reliability.
Drawings
FIG. 1 is a diagram of a multiple communication system coexistence scenario of the prior art;
fig. 2 is a flowchart of an interference prevention method for a complex communication scenario according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an interference preventing device for a complex communication scenario according to a second embodiment of the present invention;
fig. 4 is a flowchart of an interference prevention method for a complex communication scenario according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an interference preventing device for a complex communication scenario according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of an exemplary application scenario according to an embodiment of the present invention.
Detailed Description
As background art, in a scenario where multiple communication systems coexist, the prior art cannot provide a better solution to the hidden node problem, which affects communication reliability.
Specifically, in the existing Wi-Fi system, the hidden node problem is solved through an RTS/CTS mechanism. Wherein, the RTS and CTS frames contain the address and duration of the receiving end. After receiving RTS and CTS, nodes near the transmitting end and the receiving end maintain a silent state for the duration of the communication to prevent interference.
The hidden node problem exists in the NR-U system or under the coexistence of the NR-U and Wi-Fi systems. Although similar RTS/CTS mechanisms can be introduced, the existing RTS/CTS frames are not directly applicable due to the difference of two different systems.
The inventor of the present application has analyzed and found that, in addition to the aforementioned multi-communication system coexistence scenario, similar hidden node problems may exist between devices belonging to different cells of an NR-U system even in a single NR-U system. For convenience of description, the present embodiment scheme collectively refers to the foregoing two scenarios as complex communication scenarios.
In order to solve the above technical problem, an embodiment of the present invention provides an interference prevention method for a complex communication scenario, including: transmitting a first type signal to indicate that a current channel is in an idle state; wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
By adopting the scheme of the embodiment, the problem of hidden nodes in complex communication scenes such as a multi-communication system coexistence scene can be effectively solved, and the reliability of the communication system is improved. Specifically, since the first type of signal can be identified by the third-party device, the third-party device can accurately acquire the immediate state of the UE and enter the silent state in time, so as to avoid becoming a hidden node of the device communicating with the UE through the current channel.
Further, in a scene of coexistence of multiple communication systems, since the first-type signal can be identified by devices of different communication systems, the devices of each communication system can accurately acquire the instant state of the UE, and select a suitable response mechanism according to their own roles, thereby eliminating potential hidden nodes.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 2 is a flowchart of an interference prevention method for a complex communication scenario according to a first embodiment of the present invention.
The complex communication scenario may include: multiple communication system coexistence scenarios. Wherein the multi-communication system may include an NR-U system and a Wi-Fi system.
The complex communication scenario may further include: the devices in a single communication system that need to communicate with the UE implementing the solution of the present embodiment belong to different cell scenarios of the communication system.
The scheme of this embodiment may be applied to a User Equipment side, for example, executed by a User Equipment (UE), where in this embodiment, the UE is a receiving end. The processing logic similar to RTS/CTS mechanism ensures that the devices of different communication systems can accurately know the instant state of the receiving end so as to eliminate hidden nodes.
Specifically, referring to fig. 2, the interference prevention method for a complex communication scenario according to this embodiment may include the following steps:
step S101, sending a first type signal to indicate that a current channel is in an idle state;
wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
In one implementation, the step S101 may be performed in response to receiving Channel State request information (ch sta _ request) sent by the first device. Wherein the channel state request information is for requesting downlink communication with the UE. For example, the first device may be a base station.
Specifically, before the step S101, the interference preventing method according to this embodiment may further include the steps of: receiving channel state request information sent by the first equipment; and detecting the channel state of the current channel in response to the channel state request information. The channel status may be a busy-idle status of the channel.
Further, when the detection result indicates that the channel state of the current channel is idle, the step S101 is executed.
For example, a first device wants to communicate downlink with a UE. The base station performs LBT before sending the downlink control information. After the LBT is successful, a signal requesting feedback of a Channel state, i.e., Channel state request information ChSta _ request, is sent to the UE at the beginning of a Channel Occupied Time (called a Channel Occupied Time for short, COT, also called a Channel Occupied duration) to trigger the UE to perform Channel detection. The Channel state request information may be carried by a Physical Downlink Control Channel (PDCCH for short), a GC-PDCCH, and the like.
In one implementation, the first type of signal (Channel State _ clear, ChSta _ clear) may include an identity of the UE.
In response to receiving the first type of signal, the first device may begin downlink communication with the UE using the current channel while the third party device begins to remain silent.
In one implementation, the third party device is a receiving device other than the first device of the one or more devices.
In particular, the third party device and the first device may belong to different communication systems. For example, the third-party device may be an AP of a Wi-Fi system, and the first device may be a base station of an NR-U system.
Or, the embodiment is also applicable to a scenario in which the third-party device and the first device belong to different cells of the same communication system. For example, the first device may be a base station of an NR-U system, and the third-party device may be another adjacent base station.
In one implementation, the first type of signal may be a first preamble. The sequence format of the first preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third-party device belongs, so as to ensure that the third-party device can successfully decode.
Taking the third-party device as an AP of a Wi-Fi system as an example, the first preamble may be designed as a similar preamble of the Wi-Fi system, that is, the first preamble includes a Short Training Field (STF) and a Long Training Field (LTF).
The short training field in the first preamble may be generated by a sequence cyclic shift of a short training field employed by a Wi-Fi system and repeated 10 times.
E.g., a short training field S in the first preamble1Can be shown as equation 1:
Figure BDA0002441604250000091
alternatively, the first preamble may also be determined by the third party device and the first device together to ensure that both devices can efficiently decode the first type of signal.
In one implementation, the step S101 may be performed repeatedly periodically.
In a specific implementation, the interference preventing method according to this embodiment may further include the steps of: after communication with the first device is over, a second type of signal (COT _ end) is transmitted to indicate the end of channel occupation, wherein the second type of signal is recognizable by one or more devices.
In particular, the end of communication with the first device may refer to a COT end.
Thus, by transmitting the second type of signal, the third party device is made aware that the channel occupation has ended.
In one implementation, the second type of signal may be a second preamble. The sequence format of the second preamble can be determined according to a preamble sequence format that can be decoded by a communication system to which the third-party device belongs, so as to ensure that the third-party device can successfully decode the preamble sequence.
Taking the third party device as an AP of a Wi-Fi system as an example, the second preamble may be designed as a similar preamble of the Wi-Fi system, that is, including an STF and an LTF.
The STF in the second preamble may be generated by a sequence cyclic shift of the STF employed by the Wi-Fi system and repeated 10 times, and is different from the STF in the first preamble.
E.g. STFS in the second preamble2Can be shown as equation 2:
Figure BDA0002441604250000092
alternatively, the second preamble may be determined by the third party device and the first device together.
In one implementation, the sequences of the first type of signal and the second type of signal are orthogonal to avoid mutual interference. For example, the aforementioned STFS1And STFS2Are orthogonal.
In one implementation, the first type of signal may further include: channel occupancy information, wherein the channel occupancy information is identifiable by one or more devices, and the channel occupancy information is at least used for indicating a channel occupancy duration of a current channel.
Therefore, the UE can inform the third-party equipment that the third-party equipment is to communicate with the first equipment and how long the channel is occupied by only sending the first type of signals.
For example, the first type of signal may comprise the aforementioned STFS1And an LTF, which may further include the channel occupancy information.
The channel occupancy information may be sent by the first device to the UE through the GC-PDCCH at the start of the COT.
The channel occupancy information may be sent via an uplink control channel and/or an uplink data channel.
In one implementation, the step of transmitting the channel occupancy information may be repeated periodically while the first type of signal is being transmitted and for the duration of the channel occupancy.
For example, in transmitting the STFS1And LTF, and within the COT, the channel occupancy information may be sent repeatedly on a periodic basis.
As another example, the STFS1And LTF may also be delivered repeatedly on a periodic basis.
Therefore, at the UE side, the problem of hidden nodes in complex communication scenes such as a multi-communication system coexistence scene can be effectively solved, and the reliability of the communication system is improved. Specifically, since the first type of signal can be identified by the third-party device, the third-party device can accurately acquire the immediate state of the UE and enter the silent state in time, so as to avoid becoming a hidden node of the device communicating with the UE through the current channel.
Further, in a scene of coexistence of multiple communication systems, since the first-type signal can be identified by devices of different communication systems, the devices of each communication system can accurately acquire the instant state of the UE, and select a suitable response mechanism according to their own roles, thereby eliminating potential hidden nodes.
Fig. 3 is a schematic structural diagram of an interference preventing apparatus for a complex communication scenario according to a second embodiment of the present invention. Those skilled in the art understand that the interference preventing device 2 for a complex communication scenario (hereinafter, referred to as the interference preventing device 2) described in this embodiment may be used to implement the method technical solution described in the embodiment of fig. 2.
Specifically, referring to fig. 3, the interference preventing device 2 of the present embodiment may include: a sending module 21, configured to send a first type of signal to indicate that a current channel is in an idle state; wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
For more details of the operation principle and the operation mode of the interference preventing device 2, reference may be made to the description in fig. 2, and details are not repeated here.
Fig. 4 is a flowchart of an interference prevention method for a complex communication scenario according to a third embodiment of the present invention.
The scheme of the embodiment can be applied to a third-party device side, such as executed by an AP of a Wi-Fi system. To avoid the third party device to become a hidden node for the first device through processing logic similar to the RTS/CTS mechanism.
Specifically, referring to fig. 4, the interference prevention method for a complex communication scenario according to this embodiment may include the following steps:
step S301, responding to the first kind of signals, keeping silent;
wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
Those skilled in the art will understand that the step S301 is regarded as an execution step corresponding to the step S101 in the embodiment shown in fig. 2, and the two steps complement each other in specific implementation principle and logic. Therefore, the explanation of the terms in this embodiment can refer to the description of the embodiment shown in fig. 2, and will not be repeated here.
In one implementation, the first type of signal may be a first preamble, where a sequence format of the first preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by both the third party device and the first device.
In a specific implementation, the interference preventing method according to this embodiment may further include the steps of: in response to receiving a second type of signal, the muting is disarmed, wherein the second type of signal is recognizable by one or more devices.
In one implementation, the second type of signal may be a second preamble, where a sequence format of the second preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by both the third party device and the first device.
Further, the sequences of the first type signal and the second type signal are orthogonal.
In one implementation, the first type of signal may further include: channel occupancy information, wherein the channel occupancy information is identifiable by one or more devices, and the channel occupancy information is at least used for indicating a channel occupancy duration of a current channel.
Correspondingly, the interference prevention method of the embodiment may further include the steps of: and starting timing from the reception of the first type of signals, and removing the silence when the timing duration exceeds the channel occupation duration indicated by the channel occupation information.
Thus, it is not necessary to wait for the second type of signal, but it is calculated when the first device finishes occupying the channel directly from the channel occupancy information in the first type of signal.
In one implementation, the first type of signal may be sent repeatedly on a periodic basis.
In one implementation, the channel occupancy information may be sent repeatedly on a periodic basis while the first type of signal is being sent and for the channel occupancy duration.
Therefore, at the third-party equipment side, in response to receiving the first-class signal, the third-party equipment can accurately acquire the instant state of the UE and keep silent in time, so as to avoid conflict at the UE side, and improve the communication reliability.
Fig. 5 is a schematic structural diagram of an interference preventing apparatus for a complex communication scenario according to a fourth embodiment of the present invention. Those skilled in the art understand that the interference preventing device 4 for a complex communication scenario (hereinafter, referred to as the interference preventing device 4) described in this embodiment may be used to implement the method technical solution described in the embodiment of fig. 4.
Specifically, referring to fig. 5, the interference preventing device 4 of the present embodiment may include: a keep silent module 41, responsive to receiving the first type of signal, keeping silent; wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
For more details of the operation principle and the operation mode of the interference preventing device 4, reference may be made to the description in fig. 4, and details are not repeated here.
In a typical application scenario, referring to fig. 6, the base station 51 belongs to an NR-U system, the AP53 belongs to a Wi-Fi system, the signal coverage of the base station 51 is shown as a range b1, the signal coverage of the UE52 is shown as a range b2, and the signal coverage of the AP53 is shown as a range b 3. The base station 51 and the AP53 are hidden nodes of each other, limited by the signal coverage.
In the present application scenario, for downlink communication with the UE52, the base station 51 may perform operation s1 to send channel state request information to trigger the UE52 to perform channel detection.
When the UE52 performs channel detection and finds that the channel is idle, operation s2 may be performed to feed back the first type signal. The first type of signal may be received by any node in the vicinity of the UE 52.
In response to receiving the first type of signal, the base station 51 determines that the UE52 has idle side channels, and may start downlink transmission.
In response to receiving the first type of signal, the AP53 begins to remain silent.
Further, when the base station 51 and the UE52 complete communication, i.e., the COT ends, in order to enable the AP53 to know that the channel occupancy has ended. At the end of the COT, the UE52 may perform operation s3 to send a second type of signal to indicate the end of the channel occupancy.
In response to receiving the second type of signal, the AP53 knows that the channel occupancy is over and unmutes.
The first type of signal and the second type of signal may both be sent repeatedly on a periodic basis.
In a variant, said operation s3 may be omitted. At this time, the first type signal may include the channel occupancy information. Thus, in response to receiving the first type of signal, the AP53 may determine that silence needs to be started and determine the duration of silence to be maintained.
Further, the AP53 may automatically unmute when the duration of muting reaches the COT indicated by the channel occupancy information.
Further, the embodiment of the present invention further discloses a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the technical solution of the method described in the embodiment shown in fig. 2 or fig. 4 is executed. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transient) memory. The storage medium may include ROM, RAM, magnetic or optical disks, etc.
Further, an embodiment of the present invention further discloses a terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the technical solution of the method in the embodiment shown in fig. 2 or fig. 4 when executing the computer instructions. Preferably, the terminal may be a 5G user terminal, a base station, or an AP.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (26)

1. An interference prevention method for complex communication scenarios, comprising:
transmitting a first type signal to indicate that a current channel is in an idle state;
wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
2. The tamper-proof method of claim 1, further comprising, prior to transmitting the first type of signal:
and receiving channel state request information sent by first equipment, wherein the channel state request information is used for confirming the channel state of the current channel.
3. The tamper-proof method of claim 2, wherein the third-party device is a receiving device other than the first device.
4. The interference prevention method according to claim 1, wherein the first type of signal is a first preamble, wherein a sequence format of the first preamble is determined according to a preamble sequence format decodable by a communication system to which the third party device belongs, or is determined by the third party device and a first device together, wherein the first device is a device communicating using the current channel.
5. The tamper-proof method according to claim 1, further comprising:
and after the communication with the first equipment is finished, sending a second type of signal to indicate that the channel occupation is finished, wherein the second type of signal can be identified by one or more equipment, and the first equipment is the equipment which uses the current channel for communication.
6. The interference prevention method according to claim 5, wherein the second type of signal is a second preamble, and wherein the sequence format of the second preamble is determined according to a preamble sequence format that can be decoded by a communication system to which the third party device belongs, or is determined by both the third party device and the first device.
7. The interference prevention method according to claim 5, wherein the first type of signal and the second type of signal are both preambles, and the sequences of the two are orthogonal.
8. The tamper-proof method of claim 1, wherein the first type of signal further comprises: channel occupancy information, wherein the channel occupancy information is identifiable by one or more devices, and the channel occupancy information is at least used for indicating a channel occupancy duration of a current channel.
9. The tamper-proof method of claim 8, wherein the step of transmitting the first type of signal is performed repeatedly on a periodic basis; and/or the step of transmitting the channel occupation information is periodically and repeatedly executed at the same time of transmitting the first type of signals and within the channel occupation duration.
10. The tamper-proof method according to any one of claims 1 to 9, wherein the complex communication scenario comprises a multiple communication system coexistence scenario, wherein the multiple communication system comprises an NR-U system and a Wi-Fi system.
11. Interference prevention method according to any of claims 1 to 9, characterized in that said one or more devices are devices belonging to different communication systems or devices belonging to different cells of the same communication system.
12. The interference prevention method according to any of claims 1 to 9, wherein the third party device belongs to a different communication system than the first device, or wherein the third party device belongs to a different cell in the same communication system than the first device, wherein the first device is a device that communicates using the current channel.
13. An interference prevention method for complex communication scenarios, comprising:
in response to receiving the first type of signal, keeping silent;
wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
14. The interference prevention method according to claim 13, wherein the first type of signal is a first preamble, wherein a sequence format of the first preamble is determined according to a preamble sequence format decodable by a communication system to which the third party device belongs, or is determined by the third party device and a first device together, wherein the first device is a device communicating using the current channel.
15. The tamper-proof method of claim 13, further comprising:
in response to receiving a second type of signal, the muting is disarmed, wherein the second type of signal is recognizable by one or more devices.
16. The interference prevention method according to claim 15, wherein the second type of signal is a second preamble, wherein a sequence format of the second preamble is determined according to a preamble sequence format decodable by a communication system to which the third party device belongs, or is determined by the third party device and a first device together, wherein the first device is a device communicating using the current channel.
17. The interference prevention method of claim 15, wherein the first type of signal and the second type of signal are both preambles, and wherein the sequences of the first type of signal and the second type of signal are orthogonal.
18. The tamper-proof method of claim 13, wherein the first type of signal further comprises:
channel occupancy information, wherein the channel occupancy information is identifiable by one or more devices, and the channel occupancy information is at least used for indicating a channel occupancy duration of a current channel;
the interference prevention method further comprises:
and starting timing from the reception of the first type of signals, and removing the silence when the timing duration exceeds the channel occupation duration indicated by the channel occupation information.
19. The tamper-proof method of claim 18, wherein the first type of signal is sent repeatedly on a periodic basis; and/or, the channel occupation information is sent repeatedly periodically while the first type of signal is sent and within the channel occupation time period.
20. The tamper-proof method according to any one of claims 13 to 19, wherein the complex communication scenario comprises a multiple communication system coexistence scenario, wherein the multiple communication system comprises an NR-U system and a Wi-Fi system.
21. The interference prevention method according to any of claims 13 to 19, characterized in that said one or more devices are devices belonging to different communication systems or devices belonging to different cells of the same communication system.
22. The tamper-proof method according to any of claims 13 to 19, wherein the third-party device belongs to a different communication system than the first device, or wherein the third-party device belongs to a different cell in the same communication system than the first device, wherein the first device is a device that communicates using the current channel.
23. An interference prevention apparatus for complex communication scenarios, comprising:
a sending module, configured to send a first type of signal to indicate that a current channel is in an idle state;
wherein the first type of signal is identifiable by one or more devices and is used to instruct third party devices other than the device communicating using the current channel to remain silent.
24. An interference prevention apparatus for complex communication scenarios, comprising:
a keep silent module, responsive to receiving a first type of signal, keeping silent;
wherein the first type of signal is used to indicate that a current channel is in an idle state, the first type of signal being recognizable by one or more devices and used to indicate that third party devices other than devices communicating using the current channel remain silent.
25. A storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method of any one of claims 1 to 22.
26. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 22.
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