CN111436035A - Method and device for selecting transmission style in 5G Internet of vehicles and user equipment - Google Patents
Method and device for selecting transmission style in 5G Internet of vehicles and user equipment Download PDFInfo
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- CN111436035A CN111436035A CN201910027297.3A CN201910027297A CN111436035A CN 111436035 A CN111436035 A CN 111436035A CN 201910027297 A CN201910027297 A CN 201910027297A CN 111436035 A CN111436035 A CN 111436035A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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Abstract
The invention provides a method and a device for selecting a transmission style in a 5G internet of vehicles and user equipment. The method comprises the following steps: in the 5G Internet of vehicles, determining whether the transmission mode selection is needed at the moment n; when transmission pattern selection is needed, if the current UE uses a transmission pattern in [ n-T, n ] to perform aperiodic service transmission, continuing to select the transmission pattern to perform service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission; the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation. The invention can reduce resource waste and resource collision caused by aperiodic service.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method and a device for selecting a transmission mode in a 5G vehicle networking system and user equipment.
Background
A new protocol is reached in RAN1#95 conference of 3GPP, for out of coverage operation, the modes 2-c can pre-configure a plurality of S L (Sidelink, direct communication link) transmission patterns (pattern) for UE, for in-coverage operation, the base station can configure a plurality of S L transmission patterns for UE, if a plurality of transmission patterns are configured, the UE needs to perform pattern selection based on perception.
According to the characteristics of CG (scheduled Grant) resources, the existing pattern selection process is as follows:
for the resource without scheduling, as shown in fig. 1 and fig. 2, T is the period of configuration without scheduling, and L is the length of the pattern pool, where T > L, in all the following figures, T ═ L (as shown in fig. 2) is taken as an example.
For periodic traffic (traffic) and aperiodic traffic: when a pattern is selected for transmission, the pattern is used for transmission in a subsequent period of time, a counter is randomly selected by a higher layer, the counter is decremented by 1 every time the pattern is used for transmission, and when the counter is decremented to 0, pattern selection is triggered.
When a data packet arrives at the time n, the UE performs SA (scheduling assignment) decoding and energy measurement within a sensing (sensing) window, then excludes occupied patterns whose RSRP (reference signal Receiving Power) exceeds a threshold within a pattern selection window, and then randomly selects one pattern among the remaining patterns for transmission.
The sensing window is n-2T, n, where the moment of trigger pattern selection is n. Since data is transmitted using the patterns defined in the pattern pool in mode2-c, sensing should operate based on the pattern pool, so the sensing window is 2 times as long as the period of the scheduling-free configuration. Because 2T is the minimum length that can contain a complete style pool; and a longer window does not need to be perceived, because the scheduling-free configuration period selected by the UE and the service period should be matched, and no data transmission in a plurality of continuous configuration periods can occur.
In order to reduce the complexity of the PSCCH (Physical downlink Control Channel) blind detection in the SA decoding process, the position of the PSCCH in each pattern is fixed. Since the positions of all patterns in the pattern pool are determined, and the position of the PSCCH in each pattern is fixed, the UE knows the specific position of the PSCCH, and can directly detect SCI (Sidelink Control Information) at those positions when blindly detecting the PSCCH. As shown in fig. 3, the center of the PSCCH and the center of the pattern are aligned.
For aperiodic traffic, since the traffic is bursty, it is possible that no data arrives for aperiodic traffic within the sensing window, but outside the sensing window the aperiodic traffic already occupies a pattern (e.g., pattern 2 in fig. 4), such that the occupied pattern is not excluded from the pattern selection window and collisions result. In addition, allocating semi-static patterns for aperiodic traffic results in a waste of resources, which are authorized but unused.
Disclosure of Invention
The method, the device and the user equipment for selecting the transmission mode in the 5G Internet of vehicles can reduce resource waste caused by aperiodic service and reduce resource collision.
In a first aspect, the present invention provides a method for selecting a transmission pattern in a 5G car networking, where the method is applied to a UE, and the method includes:
in the 5G vehicle networking process, determining whether transmission style selection is needed at the moment n;
when the transmission mode selection is determined to be needed, if the current UE uses one transmission mode in [ n-T, n ] to carry out aperiodic service transmission, the transmission mode is continuously selected to carry out service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission;
wherein the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation.
Optionally, when aperiodic service arrives at time n, if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], continuing to select the transmission pattern for aperiodic service transmission; if the current UE senses that one or more transmission patterns are used by periodic services of other UEs in the sensing window and the current UE does not use the transmission patterns for aperiodic service transmission in [ n-T, n ], excluding the transmission patterns used by the periodic services sensed in the sensing window and the transmission patterns used by the aperiodic services sensed in [ n-T, n ] in the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for the transmission of the aperiodic services.
Optionally, when a new periodic service arrives at time n, if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], continuing to select the transmission pattern for the new periodic service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for transmission of the new periodic service.
Optionally, the transmission patterns excluded from the pattern selection window that are perceived to be used by periodic traffic are transmission patterns with RSRP greater than a preset threshold.
Optionally, the PSCCH position in each transmission pattern is fixed.
In a second aspect, the present invention provides an apparatus for selecting a transmission pattern in a 5G car networking, the apparatus being located at a UE, the apparatus comprising:
the determining unit is used for determining whether the transmission mode selection is needed at the moment n in the 5G vehicle networking process;
a selecting unit, configured to, when the determining unit determines that transmission pattern selection is required, continue to select a transmission pattern for service transmission if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ]; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission;
wherein the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation.
Optionally, the selecting unit is configured to, when an aperiodic service arrives at time n, continue to select a transmission pattern for aperiodic service transmission if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ]; if the current UE does not use the transmission pattern for the aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for the transmission of the aperiodic service.
Optionally, the selecting unit is configured to, when a new periodic service arrives at time n, continue to select the transmission pattern for transmitting the new periodic service if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ]; if the current UE does not use the transmission pattern for aperiodic service transmission in [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for transmission of the new periodic service.
Optionally, the transmission patterns excluded from the pattern selection window that are perceived to be used by periodic traffic are transmission patterns with RSRP greater than a preset threshold.
Optionally, the PSCCH position in each transmission pattern is fixed.
In a third aspect, the present invention provides a ue, where the ue includes a device for selecting a transmission format in the 5G car networking.
According to the method and the device for selecting the transmission pattern in the 5G internet of vehicles and the user equipment, when the transmission pattern is determined to be required to be selected, if the current UE uses one transmission pattern in [ n-T, n ] to perform aperiodic service transmission, the transmission pattern is continuously selected to perform service transmission; if the current UE does not use the transmission pattern in [ n-T, n ] for aperiodic service transmission, excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for service transmission, thereby reducing resource waste caused by the aperiodic service and reducing resource collision.
Drawings
FIGS. 1 and 2 are schematic diagrams of the configuration of a scheduling-free resource;
fig. 3 is a schematic diagram of the location of PSCCHs in a transmission pattern pool;
FIG. 4 is a diagram illustrating transmission pattern selection in the prior art;
fig. 5 is a flowchart of a method for selecting a transmission model in a 5G car networking according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a perceptual-based transmission pattern selection according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a device for selecting a transmission format in a 5G car networking system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for selecting a transmission pattern in a 5G car networking, where the method is applied to a UE, and as shown in fig. 5, the method includes:
and S51, in the 5G vehicle networking process, determining whether the transmission pattern selection is needed at the moment n.
S52, when determining that the transmission pattern selection is needed, if the current UE uses a transmission pattern for aperiodic service transmission in [ n-T, n ], continuing to select the transmission pattern for service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission;
wherein the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation.
According to the method for selecting the transmission pattern in the 5G internet of vehicles, provided by the embodiment of the invention, when the transmission pattern is determined to be required to be selected, if the current UE uses one transmission pattern in [ n-T, n ] to perform aperiodic service transmission, the transmission pattern is continuously selected to perform service transmission; if the current UE does not use the transmission pattern in [ n-T, n ] for aperiodic service transmission, excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for service transmission, thereby reducing resource waste caused by the aperiodic service and reducing resource collision.
The following describes in detail a method for selecting a transmission format in the car networking system in embodiment 5G of the present invention.
For aperiodic traffic, in order to reduce the waste of resources, the UE performs dynamic pattern selection for aperiodic traffic, that is, pattern selection is performed whenever aperiodic data arrives, and the selected pattern is only used for transmission of a current TB (transport block). For periodic traffic, when a pattern is selected for transmission, the pattern is used for transmission for a subsequent period of time until pattern selection is triggered.
By SA decoding and energy measurement, only those patterns occupied by other UEs periodic traffic whose RSRP is greater than a threshold are excluded from the pattern selection window. Among the remaining styles, there are three styles of selection:
1. random selection, i.e. randomly selecting one pattern for transmission among the remaining patterns.
2. L BT (L isten Before Talk), determines whether the pattern is in an idle state by L BT Before selecting pattern transmission, thereby reducing collision.
3. The patterns within the pattern selection window in which collisions are likely to occur are further determined by the following method, so that collisions can be further reduced by excluding these patterns:
when a data packet arrives at a time n and a pattern selection is needed by the UE, if the UE occupies a certain pattern in [ n-T, n ] for aperiodic service transmission, the pattern is selected for transmission; otherwise, those patterns occupied by the aperiodic traffic of other UEs within [ n-T, n ] are further excluded from the remaining patterns, and then one pattern is randomly selected for transmission among the remaining patterns.
Specific example 1:
and at the moment n, the UE has aperiodic service arrival and needs to perform pattern selection.
As shown in fig. 6, the sensing window is n-2T, n, and the pattern selection window is n + T1, n + T, where T is a scheduling free configuration period and T1 depends on the UE implementation. Pattern 1 and pattern 7 are perceived to be occupied by periodic traffic in the perception window, so pattern 1 and pattern 7 are excluded in the pattern selection window.
When a UE has a data packet arriving at time n and needs to perform pattern selection, if the UE transmits aperiodic services by using a pattern 13 or a pattern 5 in [ n-T, n ], the UE continues to select the pattern for transmitting the aperiodic services; otherwise, patterns 13 and 5 are further excluded from the pattern selection window, and then one pattern is randomly selected among the remaining patterns for transmission of the aperiodic service.
Specific example 2:
and when the UE has new periodic service arrival at the time n, the pattern selection is needed.
As shown in fig. 6, the sensing window is n-2T, n, and the pattern selection window is n + T1, n + T, where T is a scheduling free configuration period and T1 depends on the UE implementation. Pattern 1 and pattern 7 are perceived to be occupied by periodic traffic in the perception window, so pattern 1 and pattern 7 are excluded in the pattern selection window.
When a UE has a data packet arriving at time n and needs to make pattern selection, if the UE transmits aperiodic traffic using pattern 13 or pattern 5 within [ n-T, n ], the UE will continue to select the pattern for transmission of the new periodic traffic; otherwise, patterns 13 and 5 are further excluded from the pattern selection window, and then one pattern is randomly selected among the remaining patterns for transmission of the new periodic service.
An embodiment of the present invention further provides a device for selecting a transmission format in a 5G car networking, where the device is located in a UE, and as shown in fig. 7, the device includes:
the determining unit 51 is used for determining whether the transmission pattern selection is needed at the moment n in the 5G vehicle networking process;
a selecting unit 52, configured to, when the determining unit 51 determines that transmission pattern selection is required, if a current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], continue to select the transmission pattern for service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission;
wherein the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation.
According to the device for selecting the transmission pattern in the 5G Internet of vehicles, provided by the embodiment of the invention, when the transmission pattern is determined to be required to be selected, if the current UE uses one transmission pattern in [ n-T, n ] to perform aperiodic service transmission, the transmission pattern is continuously selected to perform service transmission; if the current UE does not use the transmission pattern in [ n-T, n ] for aperiodic service transmission, excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for service transmission, thereby reducing resource waste caused by the aperiodic service and reducing resource collision.
Optionally, the selecting unit 52 is configured to, when an aperiodic service arrives at time n, if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], continue to select the transmission pattern for aperiodic service transmission; if the current UE does not use the transmission pattern for the aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for the transmission of the aperiodic service.
Optionally, the selecting unit 52 is configured to, when a new periodic service arrives at time n, if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], continue to select the transmission pattern for transmitting the new periodic service; if the current UE does not use the transmission pattern for aperiodic service transmission in [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for transmission of the new periodic service.
Optionally, the transmission patterns excluded from the pattern selection window that are perceived to be used by periodic traffic are transmission patterns with RSRP greater than a preset threshold.
Optionally, the PSCCH position in each transmission pattern is fixed.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
The embodiment of the invention also provides the user equipment which comprises the device for selecting the transmission style in the 5G Internet of vehicles.
It will be understood by those skilled in the art that all or part of the processes of the embodiments of the methods described above may be implemented by a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in 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 (11)
1. A method for selecting a transmission mode in a 5G Internet of vehicles is applied to a UE, and is characterized by comprising the following steps:
in the 5G Internet of vehicles, determining whether the transmission mode selection is needed at the moment n;
when the transmission mode selection is determined to be needed, if the current UE uses one transmission mode in [ n-T, n ] to carry out aperiodic service transmission, the transmission mode is continuously selected to carry out service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission;
wherein the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation.
2. The method of claim 1, wherein when aperiodic traffic arrives at time n, if the current UE uses one transmission pattern for aperiodic traffic transmission in [ n-T, n ], the transmission pattern is continuously selected for aperiodic traffic transmission; if the current UE does not use the transmission pattern for the aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for the transmission of the aperiodic service.
3. The method of claim 1, wherein when a new periodic service arrives at time n, if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], the transmission pattern is continuously selected for the new periodic service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for transmission of the new periodic service.
4. The method according to any of claims 1 to 3, wherein the transmission patterns excluded from the pattern selection window that are perceived to be used by periodic traffic are transmission patterns with an RSRP greater than a preset threshold.
5. The method according to any of claims 1 to 3, wherein the position of the PSCCH in each transmission pattern is fixed.
6. An apparatus for selecting transmission mode in 5G Internet of vehicles, the apparatus is located in UE, the apparatus comprises:
the determining unit is used for determining whether the transmission mode selection is needed at the moment n in the 5G internet of vehicles;
a selecting unit, configured to, when the determining unit determines that transmission pattern selection is required, continue to select a transmission pattern for service transmission if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ]; if the current UE does not use the transmission pattern for aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service and the transmission pattern used by the aperiodic service sensed in the sensing window and the transmission pattern used by the aperiodic service in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for service transmission;
wherein the sensing window is [ n-2T, n ], the pattern selection window is [ n + T1, n + T ], T is a scheduling-free configuration period, and T1 depends on UE implementation.
7. The apparatus of claim 6, wherein the selecting unit is configured to, when aperiodic traffic arrives at time n, continue to select the transmission pattern for transmission of the aperiodic traffic if the current UE uses one transmission pattern for transmission of the aperiodic traffic within [ n-T, n ]; if the current UE does not use the transmission pattern for the aperiodic service transmission in the [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in the [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the rest transmission patterns in the pattern selection window for the transmission of the aperiodic service.
8. The apparatus of claim 6, wherein the selecting unit is configured to, when a new periodic service arrives at time n, if the current UE uses one transmission pattern for aperiodic service transmission in [ n-T, n ], continue to select the transmission pattern for the new periodic service transmission; if the current UE does not use the transmission pattern for aperiodic service transmission in [ n-T, n ], excluding the transmission pattern used by the periodic service sensed in the sensing window and the transmission pattern used by the aperiodic service sensed in [ n-T, n ] from the pattern selection window, and then randomly selecting one transmission pattern from the remaining transmission patterns in the pattern selection window for transmission of the new periodic service.
9. The apparatus according to any of claims 6 to 8, wherein the excluded transmission patterns within a pattern selection window that are perceived to be used by periodic traffic are transmission patterns with an RSRP larger than a preset threshold.
10. The apparatus according to any of claims 6 to 8, wherein the position of the PSCCH in each transmission pattern is fixed.
11. A user equipment, characterized in that the user equipment comprises a selection device of transmission patterns in a 5G car networking according to any of claims 6 to 10.
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| CN108024318A (en) * | 2016-10-31 | 2018-05-11 | 普天信息技术有限公司 | A kind of part-time cognitive method and device suitable for V2P scenes PUE |
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| CN108024318A (en) * | 2016-10-31 | 2018-05-11 | 普天信息技术有限公司 | A kind of part-time cognitive method and device suitable for V2P scenes PUE |
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| WO2022082670A1 (en) * | 2020-10-22 | 2022-04-28 | 富士通株式会社 | Sidelink resource selection method and apparatus |
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