CN110972327A - Signal transmission method and communication equipment based on unauthorized frequency band - Google Patents

Signal transmission method and communication equipment based on unauthorized frequency band Download PDF

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Publication number
CN110972327A
CN110972327A CN201811143427.1A CN201811143427A CN110972327A CN 110972327 A CN110972327 A CN 110972327A CN 201811143427 A CN201811143427 A CN 201811143427A CN 110972327 A CN110972327 A CN 110972327A
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transmission
transmission resource
parameter
signal
resource
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CN110972327B (en
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吴昱民
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The invention provides a signal transmission method and communication equipment based on an unauthorized frequency band, wherein the method comprises the following steps: under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal; wherein the preset condition at least comprises: and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal. In the invention, in a short time before the communication equipment transmits signals, if a certain transmission resource belonging to an unauthorized frequency band transmits a previous signal, the communication equipment can directly use the transmission resource to transmit signals without LBT (local binary transmission) on the transmission resource. Therefore, the frequency of LBT of the communication equipment in the communication process of the unauthorized frequency band can be reduced, and the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band can be reduced.

Description

Signal transmission method and communication equipment based on unauthorized frequency band
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal transmission method and a communication device based on an unlicensed frequency band.
Background
In a 5G (5th-generation, fifth generation mobile communication technology) system, if an unauthorized frequency band is to be used for data transmission, a signal transmitting end needs to satisfy the usage rule of the unauthorized frequency band. For an unlicensed frequency band, a transmitting end needs to monitor whether the frequency band is occupied (or idle) before transmitting a signal, and if the frequency band is not occupied (or idle), the transmitting end may transmit the signal. The procedure of the resource idle detection is LBT (Listen Before Talk) procedure.
For example, in the random access procedure of the unlicensed frequency band, when determining available random access resources, a User Equipment (UE) needs to perform resource vacancy detection (i.e., LBT) on multiple resource locations. Thus, the random access procedure of the unlicensed frequency band requires the UE to go through multiple LBT procedures. For another example, in the uplink (or downlink) scheduling request process of the unlicensed frequency band, the communication device (UE or network side device) also needs to go through multiple LBT processes.
As can be seen, in the communication process of the unlicensed frequency band, the communication device needs to perform multiple LBT processes, so that the communication device needs to consume more electric energy in the resource idle detection of the unlicensed frequency band.
Disclosure of Invention
The embodiment of the invention provides a signal transmission method and communication equipment based on an unauthorized frequency band, which are used for solving the problem that the communication equipment needs to consume more electric energy on the resource idle detection of the unauthorized frequency band due to the fact that the communication equipment needs to carry out multiple LBT processes in the communication process of the unauthorized frequency band.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a signal transmission method based on an unlicensed frequency band, where the method is applied to a user equipment or a network side device, and the method includes:
under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal;
the preset condition at least comprises that:
and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
In a second aspect, an embodiment of the present invention provides a communication device, where the communication device is a user equipment or a network side device, and the communication device includes:
the transmission module is used for directly transmitting the current signal by using the target transmission resource under the condition that the target transmission resource meets a preset condition;
the preset condition at least comprises that:
and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
In a third aspect, an embodiment of the present invention provides a communication device, where the communication device is a user equipment or a network side device, and the communication device includes: the signal transmission method comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps in the signal transmission method based on the unlicensed frequency band provided by the embodiment of the invention when being executed by the processor.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the signal transmission method based on an unlicensed frequency band provided in the embodiment of the present invention are implemented.
In the embodiment of the invention, in a short time before the communication equipment transmits signals, if a certain transmission resource belonging to an unauthorized frequency band transmits a previous signal, the communication equipment can directly use the transmission resource to transmit the signals without carrying out LBT on the transmission resource. Therefore, the frequency of LBT of the communication equipment in the communication process of the unauthorized frequency band can be reduced, and the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a structural diagram of a signal transmission system based on an unlicensed frequency band according to an embodiment of the present invention;
fig. 2 is a flowchart of a signal transmission method based on an unlicensed frequency band according to an embodiment of the present invention;
fig. 3 is a diagram of a transmission resource according to an embodiment of the present invention;
fig. 4 is a diagram of another transmission resource provided by an embodiment of the present invention;
fig. 5 is a block diagram of a communication device according to an embodiment of the present invention;
fig. 6 is a block diagram of another communication device provided by an embodiment of the present invention;
fig. 7 is a schematic hardware structure diagram of a user equipment according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a hardware structure of a network device according to an 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 some, not all, embodiments of the present invention. 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.
The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Embodiments of the present invention are described below with reference to the accompanying drawings. The signal transmission method and the communication equipment based on the unauthorized frequency band provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, an Evolved Long Term Evolution (lte) system, or a subsequent lte communication system. The communication device may be a user device or a network side device.
Fig. 1 is a structural diagram of a signal transmission system based on an unlicensed frequency band according to an embodiment of the present invention, as shown in fig. 1, including a user equipment 11 and a network side device 12, where the user equipment 11 may be a mobile communication device, for example: the user equipment may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like, and it should be noted that the specific type of the user equipment 11 is not limited in the embodiments of the present invention. The network side device 12 may be a 5G network side device (e.g., a gNB or a 5G NRNB), or may be a 4G network side device (e.g., an eNB), or may be a 3G network side device (e.g., an NB), or a network side device in a subsequent evolved communication system, and so on, it should be noted that a specific type of the network side device 12 is not limited in the embodiment of the present invention.
Before the embodiments of the present invention are specifically described, NR-U (New RAT Un-licensed, New air interface-unlicensed) is briefly introduced as follows.
In the 5G system, if an unlicensed frequency band is used for data transmission and reception, a transmitting end of a signal needs to satisfy a usage rule of the unlicensed frequency band. For an unlicensed frequency band, a transmitting end needs to monitor whether the frequency band is occupied (or idle) before transmitting a signal, and if the frequency band is not occupied (or idle), the transmitting end may transmit the signal. The above-mentioned resource idle detection procedure is an LBT procedure.
As can be seen from the above, in the communication process of the unlicensed frequency band, the communication device needs to perform multiple LBT processes, which results in that the communication device needs to consume more electric energy in the resource idle detection of the unlicensed frequency band.
In order to solve the above problem, an embodiment of the present invention provides a signal transmission system based on an unlicensed frequency band as shown in fig. 1, and provides a signal transmission method based on an unlicensed frequency band applied to the signal transmission system, as follows:
under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal; wherein the preset condition at least comprises: and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
The target transmission resource is a transmission resource belonging to an unlicensed frequency band.
The target transmission resource is a frequency domain resource, and the target transmission resource can transmit different signals in different time domains (or different time nodes). That is, the previous signal and the current signal are transmitted on different time domains of the same frequency domain resource (i.e., the target transmission resource).
The above-mentioned predetermined time before the transmission of the current signal may be understood as a short time before the scheduled transmission time of the current signal, for example, 16 microseconds before the scheduled transmission time of the current signal. The preset time can be configured by the network side device or can be agreed by a protocol.
The transmission resource belonging to the unlicensed frequency band is within a preset time before the current signal is transmitted, and if the previous signal is transmitted, the transmission resource can be considered to meet the preset condition. When the transmission resource meets the preset condition, the transmission resource may be understood as "a transmission resource not used for LBT", and the current signal may be transmitted without passing through the LBT process and directly using the transmission resource to transmit the current signal.
It will be appreciated that since the transmission resource transmits a preceding signal within a short time before transmitting a current signal, the transmission resource is not available for a short time or is less likely to be available for a short time. Thus, the transmission resource may be considered as an idle resource when transmitting the current signal. Thus, the communication device can directly use the transmission resource for signaling without LBT of the transmission resource.
In the embodiment of the invention, in a short time before the communication equipment transmits signals, if a certain transmission resource belonging to an unauthorized frequency band transmits a previous signal, the communication equipment can directly use the transmission resource to transmit the signals without carrying out LBT on the transmission resource. Therefore, the frequency of LBT of the communication equipment in the communication process of the unauthorized frequency band can be reduced, and the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band can be reduced.
Fig. 2 is a flowchart of a signal transmission method based on an unlicensed frequency band according to an embodiment of the present invention. As shown in fig. 2, the signal transmission method based on the unlicensed frequency band is applied to a UE or a network side device, and the method includes the following steps:
step 201: under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal; wherein the preset condition at least comprises: and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
The signal transmission method of the embodiment of the invention is not only suitable for the application scene that the UE uses the resources of the unauthorized frequency band to transmit the uplink signal, but also suitable for the application scene that the network side equipment uses the resources of the unauthorized frequency band to transmit the downlink signal.
When the current signal is an uplink signal, the previous signal may be an uplink signal or a downlink signal. Correspondingly, when the current signal is a downlink signal, the previous signal may be an uplink signal or a downlink signal.
As shown in fig. 3, at t2In a transmission resource A and a transmission resource B corresponding to the time node, the transmission resource A is at t1The time node transmits a preceding signal, t1To t2Is less than or equal to the preset time, then at t2In the time node, the transmission resource a may be considered as a transmission resource that is not used for LBT, and the communication device may preferentially select the transmission resource a and directly use the transmission resource a for signal transmission.
In the embodiment of the invention, if the communication equipment needs to transmit the current signal at a certain time node, the communication equipment can randomly select a transmission resource from the transmission resources corresponding to the time node, judge whether the selected transmission resource meets the preset condition or not, and if so, directly use the transmission resource to transmit the signal; otherwise, LBT is carried out on the transmission resource, if LBT is successful, the transmission resource is used for transmitting signals, otherwise, the selection is continued from the rest transmission resources, and the process is repeated.
In terms of statistics, the signal transmission process may reduce, at a certain probability, the number of times that the communication device performs LBT in the communication process of the unlicensed frequency band, so that the power consumed by the communication device in the resource idle detection of the unlicensed frequency band may be reduced at a certain probability.
The above signal transmission process is only an example, and the embodiment of the present invention does not limit this.
In the embodiment of the invention, in a short time before the communication equipment transmits signals, if a certain transmission resource belonging to an unauthorized frequency band transmits a previous signal, the communication equipment can directly use the transmission resource to transmit the signals without carrying out LBT on the transmission resource. Therefore, the frequency of LBT of the communication equipment in the communication process of the unauthorized frequency band can be reduced, and the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band can be reduced.
In the embodiment of the present invention, the establishment of the preset condition may be only related to the time of signal transmission, that is, as long as the target transmission resource transmits a previous signal within the preset time before the current signal is transmitted, it is considered that the target transmission resource does not need to perform the LBT operation.
However, in consideration of reliability of transmission, importance of transmission, and the like, the specific embodiment of the present invention may also limit the preset condition by using an additional parameter, so as to meet the service requirement. As in the specific embodiment of the present invention, the preset condition may be further constrained by the transmission parameter of the previous signal and/or the transmission parameter of the current signal, that is: the preset condition may also be related to a transmission parameter of a previous signal and/or a transmission parameter of the current signal.
Specifically, the transmission parameter of the previous signal may include at least one of the following parameters:
a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter;
the transmission parameter of the current signal may include at least one of:
the system comprises a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter.
The transmission parameters of the prior signals can be configured by network side equipment or agreed by a protocol; the transmission parameters of the current signal can also be configured by the network side equipment or agreed by a protocol.
The transmission direction parameter may represent uplink transmission or downlink transmission.
For example, based on the consideration of transmission reliability, the network side device may configure the following preset conditions: and when the transmission direction of the current signal is uplink transmission, the transmission direction of the previous signal is downlink transmission, and the target transmission resource transmits the previous signal within a preset time before the current signal is transmitted.
The channel type parameter may characterize an uplink channel or a downlink channel.
For example, the Uplink Channel may include any one of PRACH (Physical Random Access Channel), PUSCH (Physical Uplink Shared Channel), PUCCH (Physical Uplink Control Channel), and SRS (Sounding reference signal).
For the Downlink Channel, any one of a pdcch (Physical Downlink Control Channel) refers to a Physical Downlink Control Channel), a PDSCH (Physical Downlink Shared Channel), a CSI-RS (Channel State Information-Reference Signal), and an SSB (synchronization Signal Block) may be included.
In this embodiment, the channel type parameter may be flexibly configured or agreed according to the specific requirements and considerations of signal transmission, for example, from the aspects of reliability of signal transmission or importance of transmission signal.
The signal type parameter may represent an uplink signal or a downlink signal.
The transmission band parameter may represent specific band information, for example, the transmission band of the previous signal (or the current signal) is 20 MHz; the transmission band parameter may also characterize the relation of the previous signal and the current signal on the transmission band, for example, the transmission band of the previous signal is the same as the transmission band of the current signal.
For example, the network side device may configure the following preset conditions: the transmission band of the previous signal (or the current signal) satisfies the transmission band parameter, and the target transmission resource transmits the previous signal within a preset time before the current signal is transmitted.
In this embodiment, the transmission band parameters may be flexibly configured or agreed according to specific requirements and considerations of signal transmission, for example, from the aspects of reliability of signal transmission or importance of transmission signals.
The transmission frequency point parameters may represent specific frequency point information, for example, the transmission frequency point of a previous signal (or a current signal) is 2 GHz; the transmission frequency point parameter may also represent a relationship between the previous signal and the current signal on the transmission frequency point, for example, the transmission frequency point of the previous signal is the same as the transmission frequency point of the current signal.
In this embodiment, the transmission frequency point parameters may be flexibly configured or agreed according to specific requirements and considerations of signal transmission, for example, from the aspects of reliability of signal transmission, importance of transmission signals, and the like.
The bearer beam parameter may represent specific beam identification information, for example, the bearer beam of the previous signal (or the current signal) is a beam indicated by a combination of the CSI-RS identifier and/or the SSB identifier; the bearer beam parameter may also characterize a relationship between the previous signal and the current signal on the bearer beam, e.g., the bearer beam of the previous signal is the same as the bearer beam of the current signal.
In this embodiment, the bearer beam parameters may be flexibly configured or agreed according to specific requirements and considerations of signal transmission, for example, from the aspects of reliability of signal transmission or importance of transmission signals.
The bandwidth part BWP (bandwidth part) identification parameter may represent specific BWP identification information; the BWP identification parameter may also characterize the relationship of the previous signal to the current signal over BWP, e.g., the previous signal transmitted BWP is the same as the current signal transmitted BWP.
In this embodiment, the BWP identification parameters may be flexibly configured or agreed according to specific requirements and considerations of signal transmission, for example, reliability of signal transmission or importance of transmission signal.
The cell identity parameter may represent a specific cell identity, for example, the cell identity of a previous signal (or a current signal) is cell 1; the relationship between the previous signal and the current signal on the cell identity may also be characterized, e.g. the transmission cell of the previous signal is the same as the transmission cell of the current signal.
In this embodiment, the cell identification parameter may be flexibly configured or agreed according to specific requirements and considerations of signal transmission, for example, from the aspects of reliability of signal transmission or importance of transmission signal.
In summary, the various transmission parameters mentioned above may be arbitrarily combined to form different preset conditions according to the specific requirements and considerations of signal transmission, for example, from the aspects of reliability of signal transmission or importance of transmission signals. This is not described in detail since it is not exhaustive.
Optionally, before the directly using the target transmission resource to transmit the current signal, the method further includes:
and selecting the transmission resource meeting the preset condition from the alternative transmission resources as the target transmission resource.
In this embodiment, in order to enable the communication device to transmit signals on the transmission resources not used for LBT with as high probability as possible, the communication device may preferentially select the transmission resources not used for LBT from the alternative transmission resources for signal transmission when triggering signal transmission. Wherein, the alternative transmission resource can be configured by the network side equipment or agreed by a protocol.
As shown in fig. 3, at t2In the alternative transmission resources corresponding to the time node, if the transmission resource a is a transmission resource that does not need to be used as an LBT, the communication device may preferentially select the transmission resource a and directly use the transmission resource a for signal transmission.
When the UE triggers uplink signal transmission, for example, PRACH, PUCCH including SR, PUCCH including HARQ feedback, PUCCH including CSI information, SRs, or PUSCH, the UE may preferentially select a transmission resource that is not used for LBT for uplink signal transmission.
Or, when the network side device triggers downlink signal transmission, for example, PDCCH, PDSCH, CSI-RS, or SSB, the network side device may preferentially select a transmission resource that is not used for LBT for downlink signal transmission.
Two alternative transmission resource selection schemes and signaling schemes are exemplified below.
The first method is as follows: randomly selecting one transmission resource from the alternative transmission resources, judging whether the selected transmission resource meets a preset condition, and if so, directly using the transmission resource to transmit a signal; otherwise, one transmission resource is continuously and randomly selected for judgment until the transmission resource meeting the preset condition is found, and the transmission resource meeting the preset condition is directly used for transmitting the signal. If all transmission resources do not meet the preset conditions, one transmission resource is randomly selected for LBT, if the LBT is successful, the transmission resource is used for transmitting signals, otherwise, the processes are continuously selected and repeated.
The second method comprises the following steps: selecting a transmission resource from the alternative transmission resources according to a certain sequence, judging whether the selected transmission resource meets a preset condition, and if so, directly using the transmission resource to transmit a signal; otherwise, the next transmission resource is judged until the transmission resource meeting the preset condition is found, and the transmission resource meeting the preset condition is directly used for transmitting the signal. If all transmission resources do not meet the preset conditions, one transmission resource is randomly selected for LBT, if the LBT is successful, the transmission resource is used for transmitting signals, otherwise, the processes are continuously selected and repeated.
The above transmission resource selection method and signal transmission method are only examples, and the embodiments of the present invention do not limit this.
Therefore, the communication equipment can further reduce the frequency of LBT in the communication process of the communication equipment in the unauthorized frequency band by preferentially selecting the transmission resources which do not need to be LBT, thereby further reducing the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band.
Optionally, when the number of transmission resources that satisfy the preset condition in the candidate transmission resources is greater than or equal to 2, the selecting transmission resources that satisfy the preset condition as the target transmission resources at least includes:
randomly selecting one transmission resource from the transmission resources meeting the preset condition as the target transmission resource; alternatively, the first and second electrodes may be,
and selecting the target transmission resource from the transmission resources meeting the preset condition according to the measurement result.
A specific example of how the communication device selects a target transmission resource based on the measurement results is given below.
Example one: selecting the uplink transmission resource with the best or better downlink measurement result corresponding to the uplink transmission resource as a target transmission resource from a plurality of (including two) uplink transmission resources meeting the preset condition for sending the uplink signal.
For example, the PRACH resource 1 and the PRACH resource 2 both satisfy the preset condition, and a measurement result of RSRP (Reference Symbol Received Power) of a downlink CSI-RS or SSB corresponding to the PRACH resource 1 is better, then the UE may preferentially select the PRACH resource 1 as the target transmission resource.
Example two: selecting the downlink transmission resource with the best or better downlink measurement result corresponding to the downlink transmission resource as a target transmission resource from a plurality of (including two) downlink transmission resources meeting the preset condition for sending the downlink signal.
For example, PDCCH resource 1 and PDCCH resource 2 simultaneously satisfy the preset condition, and the measurement result of RSRP of the downlink CSI-RS or SSB corresponding to PDCCH resource 1 is better, then the network side device may preferentially select PDCCH resource 1 as the target transmission resource.
The above method for selecting the target transmission resource according to the measurement result is only an example, and the embodiment of the present invention does not limit this.
As shown in fig. 4, at t2In the alternative transmission resources corresponding to the time node, if the transmission resource C and the transmission resource D are transmission resources not used for LBT, the communication device may randomly select one of the transmission resources from the transmission resource C and the transmission resource D; and selecting the transmission resource with better measurement result from the transmission resources C and D according to the measurement result.
Optionally, the selection manner of the target transmission resource at least includes:
selecting the target transmission resource through a Media Access Control (MAC) layer; alternatively, the first and second electrodes may be,
selecting the target transmission resource through a physical PHY layer.
Wherein the selecting the target transmission resource through a media access control, MAC, layer comprises:
the MAC layer judges whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
if the transmission resources meet the preset conditions, the MAC layer selects the target transmission resources from the transmission resources meeting the preset conditions;
the MAC layer indicates the target transmission resource to the PHY layer.
The following specifically describes the process of selecting a target transmission resource through the MAC layer in the two application scenarios, i.e., UE transmits an uplink signal using a resource in an unlicensed frequency band, and network-side device transmits a downlink signal using a resource in an unlicensed frequency band.
When the UE triggers uplink signal transmission, the MAC layer selects a plurality of uplink transmission resource locations, for example, resource 1: the PRACH resource is at a frequency point 1 and a subframe 2; resource 2: the PRACH resource is at a frequency point 2 and a subframe 2; resource 3: the PRACH resources are in frequency point 3 and subframe 3. The positions of the uplink transmission resources can be configured by the network side equipment or agreed by a protocol.
The MAC layer judges whether the uplink transmission resources meeting the preset conditions exist in the plurality of uplink transmission resources, and if the uplink transmission resources meeting the preset conditions exist, the MAC layer preferentially selects the uplink transmission resources. For example, resource 1: the PRACH resource is at frequency point 1 and subframe 2, and the UE receives the downlink channel PDCCH signal at frequency point 1 and subframe 1, the MAC layer preferentially selects the resource 1 for the transmission of PRACH.
The MAC layer indicates the selected uplink transmission resource to the PHY layer for transmission of the uplink signal.
Additionally, when a plurality of uplink transmission resources simultaneously satisfy a preset condition, the MAC layer randomly selects an available uplink transmission resource for uplink signal transmission, or selects an uplink transmission resource with the best downlink measurement corresponding to the uplink transmission resource from the plurality of uplink transmission resources.
Correspondingly, when the network side device triggers downlink signal transmission, the MAC layer selects a plurality of downlink transmission resource locations, for example, resource 1: PDCCH resources are at a frequency point 1 and a subframe 2; resource 2: PDCCH resources are at frequency point 2 and subframe 2; resource 3: the PDCCH resources are in frequency point 3 and subframe 3. The positions of the downlink transmission resources can be configured by network side equipment or agreed by a protocol.
The MAC layer judges whether the downlink transmission resources meet preset conditions or not in the plurality of downlink transmission resources, and if the downlink transmission resources meet the preset conditions, the MAC layer preferentially selects the downlink transmission resources. For example, resource 1: the PDCCH resources are in a frequency point 1 and a subframe 2, and the network side equipment receives an uplink channel PUCCH signal in the frequency point 1 and the subframe 1, the MAC layer preferentially selects the resource 1 for sending the PDCCH.
And the MAC layer indicates the selected downlink transmission resource to the PHY layer for transmitting the downlink signal.
Additionally, when a plurality of downlink transmission resources simultaneously satisfy a preset condition, the MAC layer randomly selects an available downlink transmission resource for transmitting a downlink signal, or selects a downlink transmission resource corresponding to the downlink transmission resource and having the best downlink measurement from the plurality of downlink transmission resources.
Wherein the selecting the target transmission resource through the physical PHY layer comprises:
the PHY layer receives the alternative transmission resources indicated by the MAC layer;
the PHY layer judges whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
and if so, the PHY layer selects the target transmission resource from the resources meeting the preset condition.
The following specifically describes the process of selecting the target transmission resource through the PHY layer for two application scenarios, i.e., UE transmits an uplink signal using the resource in the unlicensed frequency band, and network-side device transmits a downlink signal using the resource in the unlicensed frequency band.
When the UE triggers uplink signal transmission, the MAC layer indicates multiple uplink transmission resources to the PHY layer, for example, resource 1: the PRACH resource is at a frequency point 1 and a subframe 2; resource 2: the PRACH resource is at a frequency point 2 and a subframe 2; resource 3: the PRACH resources are in frequency point 3 and subframe 3. The positions of the uplink transmission resources can be configured by the network side equipment or agreed by a protocol.
The PHY layer judges whether the uplink transmission resources meeting the preset conditions exist in the plurality of uplink transmission resources indicated by the MAC layer, and if the uplink transmission resources meeting the preset conditions exist, the PHY layer preferentially selects the uplink transmission resources for transmitting the uplink signals. For example, resource 1: the PRACH resource is at frequency point 1 and subframe 2, and the UE receives the downlink channel PDCCH signal at frequency point 1 and subframe 1, the PHY layer preferentially selects the resource 1 for the transmission of the PRACH.
Additionally, when a plurality of uplink transmission resources simultaneously satisfy a preset condition, the PHY layer randomly selects an available uplink transmission resource for transmission of an uplink signal, or selects an uplink transmission resource corresponding to the uplink transmission resource and having the best downlink measurement for transmission of the uplink signal from the plurality of uplink transmission resources.
Correspondingly, when the network side device triggers downlink signal transmission, the MAC layer indicates a plurality of downlink transmission resources to the PHY layer, for example, resource 1: PDCCH resources are at a frequency point 1 and a subframe 2; resource 2: PDCCH resources are at frequency point 2 and subframe 2; resource 3: the PDCCH resources are in frequency point 3 and subframe 3. The positions of the downlink transmission resources can be configured by network side equipment or agreed by a protocol.
The PHY layer judges whether a downlink transmission resource meeting a preset condition exists in a plurality of downlink transmission resources indicated by the MAC layer, and if the downlink transmission resource meeting the preset condition exists, the PHY layer preferentially selects the downlink transmission resource for transmitting a downlink signal. For example, resource 1: the PDCCH resources are in frequency point 1 and subframe 2, and the network side equipment receives an uplink channel PUCCH signal in frequency point 1 and subframe 1, the PHY layer preferentially selects the resource 1 for transmitting the PDCCH.
Additionally, when a plurality of downlink transmission resources simultaneously satisfy a preset condition, the PHY layer randomly selects an available downlink transmission resource for transmitting a downlink signal, or selects a downlink transmission resource corresponding to the downlink transmission resource and having the best downlink measurement from the plurality of downlink transmission resources for transmitting the downlink signal.
In summary, in a short time before the communication device performs signal transmission, if a certain transmission resource belonging to an unlicensed frequency band transmits a previous signal, the communication device may directly use the transmission resource for signal transmission without performing LBT on the transmission resource. In addition, the communication device may also preferentially select, among the alternative transmission resources, a transmission resource that does not require LBT for transmission of the signal. Therefore, the frequency of LBT of the communication equipment in the communication process of the unauthorized frequency band can be reduced, and the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band can be reduced.
Fig. 5 is a structural diagram of a communication device according to an embodiment of the present invention, where the communication device is a user equipment or a network side device, and as shown in fig. 5, the communication device 500 includes:
a transmission module 501, configured to transmit a current signal directly using a target transmission resource when the target transmission resource meets a preset condition;
wherein the preset condition at least comprises:
and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
Optionally, as shown in fig. 6, the communication device 500 further includes:
a selecting module 502, configured to select, from the candidate transmission resources, a transmission resource that meets the preset condition as the target transmission resource.
Optionally, when the number of transmission resources satisfying the preset condition in the alternative transmission resources is greater than or equal to 2, the selecting module 502 is at least configured to:
randomly selecting one transmission resource from the transmission resources meeting the preset condition as the target transmission resource; alternatively, the first and second electrodes may be,
and selecting the target transmission resource from the transmission resources meeting the preset condition according to the measurement result.
Optionally, the selecting module 502 is disposed in a MAC layer; alternatively, the first and second electrodes may be,
the selection module is arranged at a physical PHY layer.
Optionally, the selecting module 502 is disposed in the MAC layer, and is specifically configured to:
judging whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
if yes, selecting the target transmission resource from the transmission resources meeting the preset condition;
indicating the target transmission resource to the PHY layer.
Optionally, the selecting module 502 is disposed in the PHY layer, and is specifically configured to:
receiving the alternative transmission resource indicated by the MAC layer;
judging whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
and if so, selecting the target transmission resource from the resources meeting the preset condition.
Optionally, the preset condition is further related to a transmission parameter of the previous signal and/or a transmission parameter of the current signal.
Optionally, the transmission parameter of the previous signal includes at least one of the following parameters:
a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter;
the transmission parameters of the current signal include at least one of:
the system comprises a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter.
Optionally, the preset condition is configured by the network side device or agreed by a protocol.
Optionally, the alternative transmission resource is configured by the network side device or agreed by a protocol.
It should be noted that, in the embodiment of the present invention, the communication device 500 may be a communication device of any implementation manner in the method embodiment, and any implementation manner of the communication device in the method embodiment may be implemented by the communication device 500 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.
The following is a detailed description of two communication devices, namely, a user device and a network device.
Referring to fig. 7, fig. 7 is a schematic diagram of a hardware structure of a user equipment for implementing various embodiments of the present invention, where the user equipment 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the user equipment configuration shown in fig. 7 does not constitute a limitation of the user equipment, which may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the user equipment includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted user equipment, a wearable device, a pedometer, and the like.
Wherein the processor 610 is configured to:
under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal;
wherein the preset condition at least comprises:
and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
Optionally, the processor 610 is further configured to:
and selecting the transmission resource meeting the preset condition from the alternative transmission resources as the target transmission resource.
Optionally, when the number of transmission resources satisfying the preset condition in the candidate transmission resources is greater than or equal to 2, the processor 610, when performing the step of selecting the transmission resource satisfying the preset condition as the target transmission resource, at least includes:
randomly selecting one transmission resource from the transmission resources meeting the preset condition as the target transmission resource; alternatively, the first and second electrodes may be,
and selecting the target transmission resource from the transmission resources meeting the preset condition according to the measurement result.
Optionally, the selection manner of the target transmission resource at least includes:
the processor 610 selects the target transmission resource through a media access control, MAC, layer; alternatively, the first and second electrodes may be,
the processor 610 selects the target transmission resource through a physical PHY layer.
Optionally, the processor 610 selects the target transmission resource through the MAC layer, including:
the processor 610 determines whether there is a transmission resource satisfying the preset condition in the alternative transmission resources through the MAC layer;
if the transmission resource exists, the processor 610 selects the target transmission resource from the transmission resources meeting the preset condition through the MAC layer;
the processor 610 indicates the target transmission resource to the PHY layer through the MAC layer.
Optionally, the processor 610 selects the target transmission resource through the PHY layer, including:
the processor 610 receives the alternative transmission resource indicated by the MAC layer through the PHY layer;
the processor 610 determines whether there is a transmission resource satisfying the preset condition in the alternative transmission resources through the PHY layer;
if the target transmission resource exists, the processor 610 selects the target transmission resource from the resources meeting the preset condition through the PHY layer.
Optionally, the preset condition is further related to a transmission parameter of the previous signal and/or a transmission parameter of the current signal.
Optionally, the transmission parameter of the previous signal includes at least one of the following parameters:
a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter;
the transmission parameters of the current signal include at least one of:
the system comprises a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter.
Optionally, the preset condition is configured by the network side device or agreed by a protocol.
Optionally, the alternative transmission resource is configured by the network side device or agreed by a protocol.
In the embodiment of the invention, in a short time before the communication equipment transmits signals, if a certain transmission resource belonging to an unauthorized frequency band transmits a previous signal, the communication equipment can directly use the transmission resource to transmit the signals without carrying out LBT on the transmission resource. In addition, the communication device may also preferentially select, among the alternative transmission resources, a transmission resource that does not require LBT for transmission of the signal. Therefore, the frequency of LBT of the communication equipment in the communication process of the unauthorized frequency band can be reduced, and the electric energy consumed by the communication equipment in the resource idle detection of the unauthorized frequency band can be reduced.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.
The user device provides wireless broadband internet access to the user via the network module 602, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.
The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 may also provide audio output related to a specific function performed by the user equipment 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.
The user device 600 also includes at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 6061 and the backlight when the user equipment 600 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the user equipment posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the user device. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 7, the touch panel 6071 and the display panel 6061 are two independent components to implement the input and output functions of the user equipment, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the user equipment, and is not limited herein.
The interface unit 608 is an interface for connecting an external device to the user equipment 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the user equipment 600 or may be used to transmit data between the user equipment 600 and the external device.
The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 610 is a control center of the user equipment, connects various parts of the entire user equipment using various interfaces and lines, and performs various functions of the user equipment and processes data by running or executing software programs and modules stored in the memory 609 and calling data stored in the memory 609, thereby performing overall monitoring of the user equipment. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.
The user equipment 600 may further include a power supply 611 (such as a battery) for supplying power to various components, and preferably, the power supply 611 may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.
In addition, the user equipment 600 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides a user equipment, which includes a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program is executed by the processor 610 to implement each process of the signal transmission method embodiment based on the unlicensed frequency band, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
Referring to fig. 8, fig. 8 is a structural diagram of a network side device according to an embodiment of the present invention. As shown in fig. 8, the network-side device 800 includes: a processor 801, a transceiver 802, a memory 803, and a bus interface, wherein:
the transceiver 802 is configured to:
under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal;
wherein the preset condition at least comprises:
optionally, the target transmission resource transmits a previous signal within a preset time before transmitting the current signal.
Before the transceiver 802 transmits the current signal directly using the target transmission resource, the processor 801 is configured to:
and selecting the transmission resource meeting the preset condition from the alternative transmission resources as the target transmission resource.
Optionally, when the number of transmission resources satisfying the preset condition in the candidate transmission resources is greater than or equal to 2, the processor 801, when performing the step of selecting the transmission resource satisfying the preset condition as the target transmission resource, at least includes:
randomly selecting one transmission resource from the transmission resources meeting the preset condition as the target transmission resource; alternatively, the first and second electrodes may be,
and selecting the target transmission resource from the transmission resources meeting the preset condition according to the measurement result.
Optionally, the selection manner of the target transmission resource at least includes:
the processor 801 selects the target transmission resource through a Media Access Control (MAC) layer; alternatively, the first and second electrodes may be,
the processor 801 selects the target transmission resource through the physical PHY layer.
Optionally, the processor 801 selects the target transmission resource through the MAC layer, including:
the processor 801 determines, by the MAC layer, whether a transmission resource meeting the preset condition exists in the candidate transmission resources;
if the transmission resource exists, the processor 801 selects the target transmission resource from the transmission resources meeting the preset condition through the MAC layer;
the processor 801 indicates the target transmission resource to the PHY layer through the MAC layer.
Optionally, the processor 801 selects the target transmission resource through the PHY layer, including:
the processor 801 receives the alternative transmission resource indicated by the MAC layer through the PHY layer;
the processor 801 determines, by the PHY layer, whether a transmission resource meeting the preset condition exists in the candidate transmission resources;
if the target transmission resource exists, the processor 801 selects the target transmission resource from the resources meeting the preset condition through the PHY layer.
Optionally, the preset condition is further related to a transmission parameter of the previous signal and/or a transmission parameter of the current signal.
Optionally, the transmission parameter of the previous signal includes at least one of the following parameters:
a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter;
the transmission parameters of the current signal include at least one of:
the system comprises a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter.
Optionally, the preset condition is configured by the network side device or agreed by a protocol.
Optionally, the alternative transmission resource is configured by the network side device or agreed by a protocol.
In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 803, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.
It should be noted that, in this embodiment, the network-side device 800 may be a network-side device according to any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment of the present invention may be implemented by the network-side device 800 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the signal transmission method embodiment based on the unlicensed frequency band corresponding to the network side device or the user equipment, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a user equipment (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (22)

1. A signal transmission method based on an unlicensed frequency band is applied to user equipment or network side equipment, and is characterized in that the method comprises the following steps:
under the condition that the target transmission resource meets a preset condition, the target transmission resource is directly used for transmitting the current signal;
wherein the preset condition at least comprises:
and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
2. The method of claim 1, wherein prior to said transmitting a current signal directly using said target transmission resource, said method further comprises:
and selecting the transmission resource meeting the preset condition from the alternative transmission resources as the target transmission resource.
3. The method according to claim 2, wherein when the number of transmission resources satisfying the preset condition in the alternative transmission resources is greater than or equal to 2, the selecting the transmission resource satisfying the preset condition as the target transmission resource comprises at least:
randomly selecting one transmission resource from the transmission resources meeting the preset condition as the target transmission resource; alternatively, the first and second electrodes may be,
and selecting the target transmission resource from the transmission resources meeting the preset condition according to the measurement result.
4. The method according to claim 2 or 3, wherein the selection of the target transmission resource at least comprises:
selecting the target transmission resource through a Media Access Control (MAC) layer; alternatively, the first and second electrodes may be,
selecting the target transmission resource through a physical PHY layer.
5. The method of claim 4, wherein selecting the target transmission resource through a Medium Access Control (MAC) layer comprises:
the MAC layer judges whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
if the transmission resources meet the preset conditions, the MAC layer selects the target transmission resources from the transmission resources meeting the preset conditions;
the MAC layer indicates the target transmission resource to the PHY layer.
6. The method of claim 4, wherein selecting the target transmission resource by a physical PHY layer comprises:
the PHY layer receives the alternative transmission resources indicated by the MAC layer;
the PHY layer judges whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
and if so, the PHY layer selects the target transmission resource from the resources meeting the preset condition.
7. The method according to claim 1, characterized in that said preset condition is also related to transmission parameters of said previous signal and/or transmission parameters of said current signal.
8. The method of claim 7, wherein the transmission parameters of the prior signal comprise at least one of:
a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter;
the transmission parameters of the current signal include at least one of:
the system comprises a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter.
9. The method of claim 1, wherein the preset condition is configured by the network side device or agreed by a protocol.
10. The method of claim 2, wherein the alternative transmission resource is configured by the network side device or agreed upon by a protocol.
11. A communication device, which is a user equipment or a network side device, the communication device comprising:
the transmission module is used for directly transmitting the current signal by using the target transmission resource under the condition that the target transmission resource meets a preset condition;
wherein the preset condition at least comprises:
and within a preset time before the current signal is transmitted, the target transmission resource transmits a previous signal.
12. The communications device of claim 11, further comprising:
and the selection module is used for selecting the transmission resource meeting the preset condition from the alternative transmission resources as the target transmission resource.
13. The communications device according to claim 12, wherein when the number of transmission resources satisfying the preset condition in the alternative transmission resources is greater than or equal to 2, the selecting module is at least configured to:
randomly selecting one transmission resource from the transmission resources meeting the preset condition as the target transmission resource; alternatively, the first and second electrodes may be,
and selecting the target transmission resource from the transmission resources meeting the preset condition according to the measurement result.
14. The communication device according to claim 12 or 13, wherein the selection module is disposed at a Medium Access Control (MAC) layer; alternatively, the first and second electrodes may be,
the selection module is arranged at a physical PHY layer.
15. The communications device according to claim 14, wherein the selection module is disposed at the MAC layer, and is specifically configured to:
judging whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
if yes, selecting the target transmission resource from the transmission resources meeting the preset condition;
indicating the target transmission resource to the PHY layer.
16. The communication device according to claim 14, wherein the selection module is disposed in the PHY layer, and is specifically configured to:
receiving the alternative transmission resource indicated by the MAC layer;
judging whether the transmission resources meeting the preset conditions exist in the alternative transmission resources or not;
and if so, selecting the target transmission resource from the resources meeting the preset condition.
17. The communication device according to claim 11, wherein the preset condition is further related to a transmission parameter of the previous signal and/or a transmission parameter of the current signal.
18. The communications device of claim 17, wherein the transmission parameters of the prior signal comprise at least one of:
a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter;
the transmission parameters of the current signal include at least one of:
the system comprises a transmission direction parameter, a channel type parameter, a signal type parameter, a transmission frequency band parameter, a transmission frequency point parameter, a bearing beam parameter, a bandwidth part identification parameter and a cell identification parameter.
19. The communication device according to claim 11, wherein the preset condition is configured by the network side device or agreed by a protocol.
20. The communications device of claim 12, wherein the alternative transmission resource is configured by the network side device or agreed upon by a protocol.
21. A communication device, which is a user equipment or a network side device, the communication device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps in the unlicensed frequency band based signal transmission method according to any one of claims 1 to 10.
22. A computer-readable storage medium, having a computer program stored thereon, which, when being executed by a processor, implements the steps of the unlicensed frequency band based signal transmission method according to any one of claims 1 to 10.
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