CN110972273A - Transmission resource configuration selection method, device and terminal - Google Patents
Transmission resource configuration selection method, device and terminal Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/04—Wireless resource allocation
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Abstract
The invention provides a transmission resource configuration selection method, which comprises the following steps: acquiring a resource configuration set, wherein the resource configuration set comprises at least one resource configuration; determining whether the value of a reserved counter of resource allocation in the resource allocation set is 0, if so, starting resource allocation selection or reselection; determining a resource allocation selection window, and removing unavailable resource allocation in a resource allocation set in the time range of the resource allocation selection window based on the sensing result in the sensing time window to obtain a plurality of candidate resource allocations; and randomly selecting one resource configuration from the candidate resource configurations, and sending a control signaling and data on the resource contained in the selected resource configuration, wherein the control signaling comprises the information of the resource configuration where the control signaling is sent and the reserved time information of the resource configuration. The invention can simultaneously meet the requirements of services with the same size of the periodic data packets, services with different sizes of the periodic data packets and aperiodic services on resource allocation.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a terminal for selecting transmission resource configuration.
Background
LTE (Long Term Evolution ) V2X (Vehicle-to-electrical communication technology) has two resource acquisition modes: the mode 3 allocates transmission resources to the base station, the mode 4 acquires transmission resources for the terminal through Sensing, and the specific working principle is described as follows:
the internet of vehicles terminal reselects the counter according to the resource isAnd if not, whether the resource selection or reselection is required is determined to be 0, the initial value of the resource reselection counter is randomly selected within a value range configured or preconfigured in a high layer by the Internet of vehicles terminal after the resource selection or reselection is performed each time, data is sent once per period, the counter is reduced by 1, and when the value of the counter is 0, the Internet of vehicles terminal performs the resource selection or reselection. As shown in fig. 1, the terminal in the internet of vehicles performs resource selection or reselection in a subframe n, and first determines a resource selection window in a time range of subframe n + T1To subframe n + T2(T1≤4，20≤T2≦ 100), and based on the sensing result from the subframe n-1000 to the subframe n-1 of the time window, removing the resource units which are not available in the resource pool configured or preconfigured at the high level within the time range of the resource selection window. The resource pool is a time-frequency domain resource pool, and comprises a time-domain end-to-end link (sidelink) subframe set and a frequency-domain subchannel set, wherein one subchannel is composed of a plurality of continuous resource blocks. One resource unit in the resource selection window is a subframe in a time domain and a plurality of continuous subchannels in a frequency domain. The removing method comprises the following steps: the method comprises the steps of obtaining information of reserved resource units in a resource selection window according to control signaling successfully decoded in a resource pool in a sensing time window, comparing RSRP (Reference Signal Receiving Power) of a data channel scheduled by the control signaling on the reserved resource units in the sensing time window with a preset threshold value, and removing the resource units reserved by the control signaling from the resource pool in the resource selection window when the RSRP exceeds the preset threshold value. Removing all resource units meeting the conditions according to the method, sequencing the rest resource units according to S-RSSI (S-Criterion Received Signal Strength Indication) corresponding to each resource unit measured in a sensing window, selecting the resource units with smaller values until the number of the selected resource units reaches 20 percent of all resource units in a resource selection window to form a candidate resource unit set, and reducing the preset threshold value of RSRP by 3dB if the number of the selected resource units is less than 20 percent until the number of the resource units in the candidate resource unit setThe amount meets the requirement of 20%. The vehicle networking terminal randomly selects a resource unit in the candidate resource unit set, randomly generates a resource reselection counter for the resource unit, and sends a control signaling and data on the selected resource unit, wherein the control signaling comprises the resource reselection counter for indicating the reserved time for the resource unit, frequency domain information of the resource unit and necessary information for decoding the scheduled data.
The 5G NR V2X has multiple traffic transmission types, which can be classified into three types: periodic traffic with the same packet size, periodic traffic with different packet sizes, and aperiodic traffic. In LTE V2X transmission mode 4, a sending end acquires sending time domain and frequency domain resources by using semi-static resource allocation based on sensing, and the mechanism has good performance for services with the same periodic data packet size, but has severe performance loss for services with different periodic data packet sizes and aperiodic services.
Disclosure of Invention
The transmission resource allocation selection method, the device and the terminal provided by the invention can simultaneously meet the requirements of services with the same size of the periodic data packets, services with different sizes of the periodic data packets and aperiodic services on resource allocation.
In a first aspect, the present invention provides a method for selecting a transmission resource configuration, including:
acquiring a resource configuration set, wherein the resource configuration set comprises at least one resource configuration;
determining whether the value of a reserved counter of the resource configuration in the resource configuration set is 0, and if at least one of the reserved counter of the resource configuration set is 0, starting resource configuration selection or reselection;
determining a resource configuration selection window, and removing unavailable resource configurations in the resource configuration set within the time range of the resource configuration selection window based on the sensing result in the sensing time window to obtain a plurality of candidate resource configurations;
and randomly selecting one resource configuration from the candidate resource configurations, and sending a control signaling and data on the resource contained in the selected resource configuration, wherein the control signaling comprises the information of the resource configuration where the control signaling is sent and the reserved time information of the resource configuration.
Optionally, the time range of the resource configuration selection window is from time n + n1 to time n + n2, the time range of the sensing time window is from time n-x to time n, where n1, n2, and x are specific values configured or preconfigured by RRC signaling, or a range, a specific value is selected by the terminal, and the unit of n1, n2, and x is a slot or a symbol; and the time n is the time for determining to start the resource configuration selection or reselection.
Optionally, the removing, within the time range of the resource configuration selection window, the resource configuration that is unavailable in the resource configuration set to obtain a plurality of candidate resource configurations includes:
according to a first type of control signaling and a second type of control signaling which are blindly detected on the resources contained in the resource configuration set in the sensing time window, successfully decoding, and acquiring the reserved resource configuration information in the resource selection window;
comparing the RSRP of the DMRS of the data channel scheduled by the resource contained in the resource configuration reserved in the resource configuration selection window in the sensing time window with a preset threshold value, and removing the resource configuration reserved by the first type of control signaling from the resource configuration set in the resource selection window when the RSRP exceeds the preset threshold value;
sequencing the rest resource configurations according to the S-RSSI corresponding to each resource configuration measured in the sensing time window and according to the type of the control signaling, performing first sequencing on the resource configurations in which only the first type of control signaling is detected in a blind manner on the contained resources according to the S-RSSI, and performing second sequencing on the resource configurations in which the first type of control signaling and the second type of control signaling are detected in a blind manner or only the second type of control signaling is detected in a blind manner on the contained resources according to the S-RSSI;
and selecting the resource configuration with the smaller median in the second sorting until the number of the resource configurations in the selected second sorting reaches the first proportion of all the resource configurations in the resource configuration set, and then selecting the resource configuration with the smaller median in the first sorting until the number of the resource configurations in the selected first sorting reaches the second proportion of all the resource configurations in the resource configuration set, so as to obtain a plurality of candidate resource configurations.
Optionally, the first and second occupation ratios are a specific value configured or preconfigured by RRC signaling, or a range, and the terminal selects the specific value.
Optionally, the randomly selecting one resource configuration from the multiple candidate resource configurations, and sending the control signaling and the data on the resource included in the selected resource configuration includes:
when the sent service is periodic and the data packet size is the same, a first type of control signaling and data are sent in each resource period of the selected resource configuration;
when the sent data is a service with periodicity and different data packet sizes, selecting a plurality of resource configurations to transmit data packets with different sizes, wherein the size of each data packet corresponds to one resource configuration, sending a first type of control signaling and data only in the next nearest resource period of the corresponding resource configuration for an arriving data packet, and sending a second type of control signaling only in the resource period position of other resource configurations without data to be sent;
when the aperiodic service is sent, selecting a resource configuration to transmit data, and only when the data arrives, sending the first type of control signaling and the data in the next nearest resource period, and only sending the second type of control signaling in other resource periods without the data to be sent.
Optionally, the first type of control signaling includes information of resource configuration where the first type of control signaling is located, information of reserved time for the resource configuration, and necessary information of decoded data; the second type of control signaling contains information of the resource configuration and the reserved time information of the resource configuration, but does not contain necessary information of decoding data.
In a second aspect, the present invention provides a transmission resource configuration selection apparatus, including:
an obtaining unit, configured to obtain a resource configuration set, where the resource configuration set includes at least one resource configuration;
a starting unit, configured to determine whether a value of a reserved counter of resource allocation in the resource allocation set is 0, and if at least one of the values is 0, start resource selection or reselection;
the selection unit is used for determining a resource configuration selection window, and removing unavailable resource configurations in the resource configuration set within the time range of the resource configuration selection window based on a sensing result in the sensing time window to obtain a plurality of candidate resource configurations;
and the transmission unit is used for randomly selecting one resource configuration from the candidate resource configurations and sending a control signaling and data on the resource contained in the selected resource configuration, wherein the control signaling comprises the information of the resource configuration where the control signaling is sent and the reserved time information of the resource configuration.
Optionally, the time range of the resource configuration selection window is from time n + n1 to time n + n2, the time range of the sensing time window is from time n-x to time n, where n1, n2, and x are specific values configured or preconfigured by RRC signaling, or a range, a specific value is selected by the terminal, and the unit of n1, n2, and x is a slot or a symbol; and the time n is the time for determining to start the resource configuration selection or reselection.
Optionally, the selecting unit includes:
an obtaining module, configured to obtain the reserved resource configuration information in the resource selection window according to a first type control signaling and a second type control signaling that are blindly detected on the resource included in the resource configuration set in the sensing time window and are successfully decoded;
a removing module, configured to compare an RSRP of a DMRS of a data channel scheduled by the first type of control signaling using resources included in the resource configuration reserved in the resource configuration selection window within the sensing time window with a predetermined threshold, and remove the resource configuration reserved by the first type of control signaling from the resource configuration set within the resource selection window when the RSRP exceeds the predetermined threshold;
the sequencing module is used for sequencing the rest resource configurations according to the type of the control signaling and the S-RSSI corresponding to each resource configuration measured in the sensing time window, performing first sequencing on the resource configurations in which only the first type of control signaling is detected in a blind mode on the contained resources according to the S-RSSI, and performing second sequencing on the resource configurations in which the first type of control signaling and the second type of control signaling are detected in a blind mode or only the second type of control signaling is detected in a blind mode on the contained resources according to the S-RSSI;
and the selection module is used for selecting the resource configuration with the smaller second ranking median until the number of the selected resource configurations in the second ranking reaches the first percentage of all the resource configurations in the resource configuration set, and then selecting the resource configuration with the smaller first ranking median until the number of the selected resource configurations in the first ranking reaches the second percentage of all the resource configurations in the resource configuration set, so as to obtain a plurality of candidate resource configurations.
Optionally, the first and second occupation ratios are a specific value configured or preconfigured by RRC signaling, or a range, and the terminal selects the specific value.
Optionally, the transmission unit is configured to send the first type of control signaling and the data in each resource period of the selected resource configuration when the sent services are periodic and the sizes of the data packets are the same; when the sent data is a service with periodicity and different data packet sizes, selecting a plurality of resource configurations to transmit data packets with different sizes, wherein the size of each data packet corresponds to one resource configuration, sending a first type of control signaling and data only in the next nearest resource period of the corresponding resource configuration for an arriving data packet, and sending a second type of control signaling only in the resource period position of other resource configurations without data to be sent; when the aperiodic service is sent, selecting a resource configuration to transmit data, and only when the data arrives, sending the first type of control signaling and the data in the next nearest resource period, and only sending the second type of control signaling in other resource periods without the data to be sent.
Optionally, the first type of control signaling includes information of resource configuration where the first type of control signaling is located, information of reserved time for the resource configuration, and necessary information of decoded data; the second type of control signaling contains information of the resource configuration and the reserved time information of the resource configuration, but does not contain necessary information of decoding data.
In a third aspect, the present invention provides a terminal, where the terminal includes the above transmission resource configuration selection apparatus.
The method, the device and the terminal for selecting the transmission resource allocation provided by the embodiment of the invention obtain a resource allocation set comprising at least one resource allocation, when the value of a reserved counter of at least one resource allocation in the resource allocation set is 0, the resource selection or reselection is started, the unavailable resource allocation in the resource allocation set is removed in the time range of a resource allocation selection window based on the sensing result in the sensing time window, a plurality of candidate resource allocations are obtained, one resource allocation is randomly selected from the candidate resource allocations, and a control signaling and data are sent on the resource included in the resource allocation, so that the requirements of services with the same periodic data packet size, services with different periodic data packet sizes and non-periodic services on the resource allocation can be met at the same time.
Drawings
Fig. 1 is a schematic diagram of an LTE internet-of-vehicle terminal performing resource selection or reselection;
FIG. 2 is a flow chart of a method for transmission resource allocation selection according to an embodiment of the present invention;
FIG. 3 is a diagram of pre-configured time-frequency domain resources under 5G NR;
fig. 4 is a schematic diagram of resource selection or reselection performed by a 5G NR internet-of-vehicles terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a transmission resource allocation selection apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a transmission resource allocation selection apparatus according to another 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 resource configuration, as shown in fig. 2, the method includes:
s21, acquiring a resource configuration set, wherein the resource configuration set comprises at least one resource configuration.
S22, determining whether the value of the reserved counter of the resource configuration in the resource configuration set is 0, if at least one of the reserved counter of the resource configuration set is 0, starting the resource configuration selection or reselection.
S23, determining a resource allocation selection window, and removing unavailable resource allocation in the resource allocation set in the time range of the resource allocation selection window based on the sensing result in the sensing time window to obtain a plurality of candidate resource allocations.
S24, randomly selecting one resource allocation from the candidate resource allocations, and sending control signaling and data on the resource included in the selected resource allocation, wherein the control signaling includes information of the resource allocation where the control signaling is sent and reserved time information of the resource allocation.
The transmission resource allocation selection method provided by the embodiment of the invention comprises the steps of obtaining a resource allocation set comprising at least one resource allocation, starting resource selection or reselection when the value of a reserved counter of at least one resource allocation in the resource allocation set is 0, removing unavailable resource allocation in the resource allocation set within the time range of a resource allocation selection window based on the sensing result in a sensing time window to obtain a plurality of candidate resource allocations, randomly selecting one resource allocation from the candidate resource allocations, and sending a control signaling and data on the resources contained in the resource allocation, so that the requirements of services with the same periodic data packet size, services with different periodic data packet sizes and non-periodic services on resource allocation can be met simultaneously.
The following describes a transmission resource allocation selection method according to an embodiment of the present invention in detail.
The 5G NR supports two uplink transmission modes based on configuration authorization: configuration grant type I (configurable grant type I) and configuration grant type II (configurable grant type II). In the configuration authorization type I, the base station configures, through an RRC (Radio Resource Control) signaling, a time-frequency domain Resource configuration for uplink transmission to the terminal, and the Resource is periodically repeated. When the terminal has uplink data to send, the terminal directly adopts the pre-configured transmission parameters to carry out data transmission on the next configured time frequency resource period without sending a request and waiting for authorization to the base station. As shown in fig. 3, the preconfigured time-frequency domain resource includes a time-domain starting timeslot position of the first time-frequency resource, a starting symbol and length in the starting timeslot, a resource period, a resource block position of the frequency domain, a frequency hopping manner, and other transmission parameters.
As shown in fig. 4, the specific process of the embodiment of the present invention is as follows:
(1) the vehicle networking terminal obtains a resource configuration set configured or pre-configured by the RRC signaling, wherein the set comprises at least one resource configuration. One resource allocation set at least comprises a time domain resource position, a frequency hopping mode and a time-frequency domain resource repetition period, and one resource allocation set can also comprise other data transmission parameters.
(2) And the vehicle networking terminal determines whether the value of a reserved counter of the resource configuration in the resource configuration set is 0 or not, and if at least one of the reserved counter of the resource configuration set is 0, the vehicle networking terminal starts resource configuration selection or reselection at the moment n.
(3) And determining a resource selection window with the time range from the time n + n1 to the time n + n2, and removing unavailable resource allocation in the resource allocation set in the time range of the resource selection window based on the sensing result from the time n-x to the time n of the sensing time window. Wherein, the values of n1, n2, and x can be configured or preconfigured with a specific value or a range by RRC signaling, a specific value is selected by the terminal, and the unit of n1, n2, and x is a slot or a symbol; the time n is the time when it is determined that resource configuration selection or reselection is initiated.
The removing method comprises the following steps: according to the first type control signaling and the second type control signaling which are blindly detected on the resources contained in the resource configuration set in the successful decoding sensing time window, the information of the resource configuration contained in the first type control signaling and the second type control signaling, the reserved time information of the resource configuration and the necessary information of decoding data contained in the first type control signaling are obtained. And comparing the RSRP of the DMRS of the data channel scheduled by the resource contained in the resource configuration reserved in the resource configuration selection window in the sensing time window of the first type of control signaling with a preset threshold value, and removing the resource configuration reserved by the first type of control signaling from a resource configuration set in the resource selection window when the RSRP exceeds the preset threshold value. And after removing all resource configurations meeting the conditions according to the mode, sequencing the rest resource configurations according to the control signaling type and the S-RSSI corresponding to each resource configuration measured in the sensing window. And carrying out first sequencing on the resource configuration in which only the first type of control signaling is detected in a blind mode on the contained resources according to the S-RSSI. And performing second sequencing on the resource configuration of blind detection of the first type of control signaling and the second type of control signaling or blind detection of only the second type of control signaling on the contained resources according to the S-RSSI. Selecting those resource configurations with smaller values in the second ordering until the number of resource configurations in the selected second ordering reaches all resource configurations in the resource configuration set
Selecting those resource configurations with smaller values in the first ordering until the number of resource configurations in the selected first ordering reaches all resource configurations in the resource configuration set
If not satisfied with
And
the predetermined threshold for RSRP is reduced by 3dB until the requirement is met. Where X and Y may be configured or preconfigured by RRC signaling with a specific value, or a range, selected by the terminal.
(4) The terminal of the Internet of vehicles meets
And
randomly selecting one resource configuration from a plurality of required candidate resource configurations, randomly generating a resource reselection counter for the resource configuration, and sending a control signaling and data by the Internet of vehicles terminal on the selected resource unit, wherein the control signaling comprises the resource reselection counter for indicating the reserved time for the resource unit, frequency domain information of the resource unit, and necessary information for decoding the scheduled data.
The control signaling is of two types: the first type of control signaling comprises information of the resource configuration, information of reserved time for the resource configuration and necessary information of decoding data; the second type of control signaling contains information of the resource configuration and the reserved time information of the resource configuration, but does not contain necessary information for decoding data. The reserved time information can be obtained according to high-level configuration or a mode determined by the terminal, the reserved time information can be in a counter mode, the timer is decreased by 1 every resource period, when the timer is 0, the sending end stops transmitting on the resource configuration, and the resource configuration is selected again, so that resource collision is reduced, and the resource utilization rate and the fairness among multiple terminals are improved.
The second type of control signaling may use a transmission format having the same size as the first type of control signaling, except that a field indicating information necessary for decoding data may be set to a specific value, such as all 1 s or all 0 s.
When the sending end sends the services with periodicity and the same data packet size, the sending end sends the first type of control signaling and data in each resource period of the selected resource configuration.
When the sending end sends services with different sizes of periodic data packets, the sending end selects a plurality of resource configurations to transmit the data packets with different sizes, and the size of each data packet corresponds to one resource configuration. And for an arriving data packet, only transmitting the first type of control signaling and data in the next nearest resource period of the corresponding resource configuration, and only transmitting the second type of control signaling in the resource period position of other resource configurations without data to be transmitted.
When the sending end sends aperiodic service, the sending end selects a resource allocation to transmit data, and only when data arrives, the sending end sends the first type of control signaling and data in the next nearest resource period, and only sends the second type of control signaling in other resource periods without data to be sent.
Before the reserved time arrives, the sending end can set a reserved time counter contained in the first type of control signaling or the second type of control signaling to a 0 form according to needs, and terminate the reserved resources in advance.
Before the sending end sends data on the time-frequency domain resource in one resource period of the selected resource configuration, it may also determine whether to transmit on the time-frequency domain resource or directly transmit in a manner of LBT (Listen Before Talk).
An embodiment of the present invention further provides a transmission resource allocation selection apparatus, as shown in fig. 5, the apparatus includes:
an obtaining unit 21, configured to obtain a resource configuration set, where the resource configuration set includes at least one resource configuration;
a starting unit 22, configured to determine whether a value of a reserved counter of resource allocation in the resource allocation set is 0, and if at least one of the values is 0, start resource selection or reselection;
a selecting unit 23, configured to determine a resource configuration selection window, and based on a sensing result in a sensing time window, remove, in a time range of the resource configuration selection window, an unavailable resource configuration in the resource configuration set to obtain multiple candidate resource configurations;
a transmission unit 24, configured to randomly select a resource configuration from the multiple candidate resource configurations, and send a control signaling and data on a resource included in the selected resource configuration, where the control signaling includes information of the resource configuration where the control signaling is sent and information of reserved time of the resource configuration.
The transmission resource allocation selection device provided in the embodiment of the present invention obtains a resource allocation set including at least one resource allocation, starts resource selection or reselection when the value of a reservation counter of at least one resource allocation in the resource allocation set is 0, removes an unavailable resource allocation in the resource allocation set within the time range of a resource allocation selection window based on a sensing result in a sensing time window, obtains a plurality of candidate resource allocations, randomly selects one resource allocation from the candidate resource allocations, and sends a control signaling and data on a resource included in the resource allocation, so that the requirements of services with the same periodic data packet size, services with different periodic data packet sizes, and aperiodic services on resource allocation can be simultaneously satisfied.
Optionally, the time range of the resource configuration selection window is from time n + n1 to time n + n2, the time range of the sensing time window is from time n-x to time n, where n1, n2, and x are specific values configured or preconfigured by RRC signaling, or a range, a specific value is selected by the terminal, and the unit of n1, n2, and x is a slot or a symbol; and the time n is the time for determining to start the resource configuration selection or reselection.
Alternatively, as shown in fig. 6, the selecting unit 23 includes:
an obtaining module 231, configured to obtain the reserved resource configuration information in the resource selection window according to the first type control signaling and the second type control signaling that are blindly detected on the resource included in the resource configuration set in the sensing time window and are decoded successfully;
a removing module 232, configured to compare an RSRP of a DMRS of a data channel scheduled by a resource included in the first type of control signaling in the sensing time window using the resource configuration reserved in the resource configuration selection window with a predetermined threshold, and remove the resource configuration reserved in the first type of control signaling from the resource configuration set in the resource selection window when the RSRP exceeds the predetermined threshold;
a sorting module 233, configured to sort the remaining resource configurations according to the type of the control signaling and according to the S-RSSI corresponding to each resource configuration measured in the sensing time window, perform a first sorting on the resource configurations where only the first type of control signaling is blind-detected on the included resources according to the S-RSSI, and perform a second sorting on the resource configurations where only the first type of control signaling and the second type of control signaling are blind-detected on the included resources or the second type of control signaling is blind-detected according to the S-RSSI;
the selecting module 234 is configured to select the resource configuration with the smaller second ranking median until the number of the resource configurations in the selected second ranking reaches the first percentage of all the resource configurations in the resource configuration set, and then select the resource configuration with the smaller first ranking median until the number of the resource configurations in the selected first ranking reaches the second percentage of all the resource configurations in the resource configuration set, so as to obtain a plurality of candidate resource configurations.
Optionally, the first and second occupation ratios are a specific value configured or preconfigured by RRC signaling, or a range, and the terminal selects the specific value.
Optionally, the transmission unit 24 is configured to send the first type of control signaling and data in each resource period of the selected one resource configuration when the sent service is periodic and the data packets have the same size; when the sent data is a service with periodicity and different data packet sizes, selecting a plurality of resource configurations to transmit data packets with different sizes, wherein the size of each data packet corresponds to one resource configuration, sending a first type of control signaling and data only in the next nearest resource period of the corresponding resource configuration for an arriving data packet, and sending a second type of control signaling only in the resource period position of other resource configurations without data to be sent; when the aperiodic service is sent, selecting a resource configuration to transmit data, and only when the data arrives, sending the first type of control signaling and the data in the next nearest resource period, and only sending the second type of control signaling in other resource periods without the data to be sent.
Optionally, the first type of control signaling includes information of resource configuration where the first type of control signaling is located, information of reserved time for the resource configuration, and necessary information of decoded data; the second type of control signaling contains information of the resource configuration and the reserved time information of the resource configuration, but does not contain necessary information of decoding data.
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 a terminal which comprises the transmission resource configuration selection device.
In the embodiment of the present invention, the terminal is a car networking terminal, but is not limited thereto.
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 (13)
1. A method for transmission resource configuration selection, comprising:
acquiring a resource configuration set, wherein the resource configuration set comprises at least one resource configuration;
determining whether the value of a reserved counter of the resource configuration in the resource configuration set is 0, and if at least one of the reserved counter of the resource configuration set is 0, starting resource configuration selection or reselection;
determining a resource configuration selection window, and removing unavailable resource configurations in the resource configuration set within the time range of the resource configuration selection window based on the sensing result in the sensing time window to obtain a plurality of candidate resource configurations;
and randomly selecting one resource configuration from the candidate resource configurations, and sending a control signaling and data on the resource contained in the selected resource configuration, wherein the control signaling comprises the information of the resource configuration where the control signaling is sent and the reserved time information of the resource configuration.
2. The method of claim 1, wherein the resource configuration selection window has a time range from time n + n1 to time n + n2, and the sensing window has a time range from time n-x to time n, wherein n1, n2 and x are specific values configured or preconfigured by RRC signaling, or a range, wherein a specific value is selected by the terminal, and wherein the unit of n1, n2 and x is a slot or a symbol; and the time n is the time for determining to start the resource configuration selection or reselection.
3. The method according to claim 1 or 2, wherein the removing the unavailable resource configuration from the set of resource configurations within the time range of the resource configuration selection window to obtain a plurality of candidate resource configurations comprises:
according to a first type of control signaling and a second type of control signaling which are blindly detected on the resources contained in the resource configuration set in the sensing time window, successfully decoding, and acquiring the reserved resource configuration information in the resource selection window;
comparing the RSRP of the DMRS of the data channel scheduled by the resource contained in the resource configuration reserved in the resource configuration selection window in the sensing time window with a preset threshold value, and removing the resource configuration reserved by the first type of control signaling from the resource configuration set in the resource selection window when the RSRP exceeds the preset threshold value;
sequencing the rest resource configurations according to the S-RSSI corresponding to each resource configuration measured in the sensing time window and according to the type of the control signaling, performing first sequencing on the resource configurations in which only the first type of control signaling is detected in a blind manner on the contained resources according to the S-RSSI, and performing second sequencing on the resource configurations in which the first type of control signaling and the second type of control signaling are detected in a blind manner or only the second type of control signaling is detected in a blind manner on the contained resources according to the S-RSSI;
and selecting the resource configuration with the smaller median in the second sorting until the number of the resource configurations in the selected second sorting reaches the first proportion of all the resource configurations in the resource configuration set, and then selecting the resource configuration with the smaller median in the first sorting until the number of the resource configurations in the selected first sorting reaches the second proportion of all the resource configurations in the resource configuration set, so as to obtain a plurality of candidate resource configurations.
4. The method of claim 3, wherein the first and second ratios are a specific value, or a range, configured or preconfigured by RRC signaling, the specific value being selected by the terminal.
5. The method of claim 3, wherein the randomly selecting one of the candidate resource configurations, and wherein sending control signaling and data on the resources included in the selected resource configuration comprises:
when the sent service is periodic and the data packet size is the same, a first type of control signaling and data are sent in each resource period of the selected resource configuration;
when the sent data is a service with periodicity and different data packet sizes, selecting a plurality of resource configurations to transmit data packets with different sizes, wherein the size of each data packet corresponds to one resource configuration, sending a first type of control signaling and data only in the next nearest resource period of the corresponding resource configuration for an arriving data packet, and sending a second type of control signaling only in the resource period position of other resource configurations without data to be sent;
when the aperiodic service is sent, selecting a resource configuration to transmit data, and only when the data arrives, sending the first type of control signaling and the data in the next nearest resource period, and only sending the second type of control signaling in other resource periods without the data to be sent.
6. The method according to claim 3, wherein the first type of control signaling includes information of resource configuration, information of reserved time for the resource configuration, and information necessary for decoding data; the second type of control signaling contains information of the resource configuration and the reserved time information of the resource configuration, but does not contain necessary information of decoding data.
7. A transmission resource configuration selection apparatus, comprising:
an obtaining unit, configured to obtain a resource configuration set, where the resource configuration set includes at least one resource configuration;
a starting unit, configured to determine whether a value of a reserved counter of resource allocation in the resource allocation set is 0, and if at least one of the values is 0, start resource selection or reselection;
the selection unit is used for determining a resource configuration selection window, and removing unavailable resource configurations in the resource configuration set within the time range of the resource configuration selection window based on a sensing result in the sensing time window to obtain a plurality of candidate resource configurations;
and the transmission unit is used for randomly selecting one resource configuration from the candidate resource configurations and sending a control signaling and data on the resource contained in the selected resource configuration, wherein the control signaling comprises the information of the resource configuration where the control signaling is sent and the reserved time information of the resource configuration.
8. The apparatus of claim 7, wherein the resource configuration selection window has a time range from time n + n1 to time n + n2, and the sensing time window has a time range from time n-x to time n, wherein n1, n2, and x are specific values configured or preconfigured by RRC signaling, or a range, wherein a specific value is selected by the terminal, and wherein the unit of n1, n2, and x is a slot or a symbol; and the time n is the time for determining to start the resource configuration selection or reselection.
9. The apparatus according to claim 7 or 8, wherein the selection unit comprises:
an obtaining module, configured to obtain the reserved resource configuration information in the resource selection window according to a first type control signaling and a second type control signaling that are blindly detected on the resource included in the resource configuration set in the sensing time window and are successfully decoded;
a removing module, configured to compare an RSRP of a DMRS of a data channel scheduled by the first type of control signaling using resources included in the resource configuration reserved in the resource configuration selection window within the sensing time window with a predetermined threshold, and remove the resource configuration reserved by the first type of control signaling from the resource configuration set within the resource selection window when the RSRP exceeds the predetermined threshold;
the sequencing module is used for sequencing the rest resource configurations according to the type of the control signaling and the S-RSSI corresponding to each resource configuration measured in the sensing time window, performing first sequencing on the resource configurations in which only the first type of control signaling is detected in a blind mode on the contained resources according to the S-RSSI, and performing second sequencing on the resource configurations in which the first type of control signaling and the second type of control signaling are detected in a blind mode or only the second type of control signaling is detected in a blind mode on the contained resources according to the S-RSSI;
and the selection module is used for selecting the resource configuration with the smaller second ranking median until the number of the selected resource configurations in the second ranking reaches the first percentage of all the resource configurations in the resource configuration set, and then selecting the resource configuration with the smaller first ranking median until the number of the selected resource configurations in the first ranking reaches the second percentage of all the resource configurations in the resource configuration set, so as to obtain a plurality of candidate resource configurations.
10. The apparatus of claim 9, wherein the first and second ratios are a specific value or a range configured or preconfigured by RRC signaling, and wherein the specific value is selected by the terminal.
11. The apparatus of claim 9, wherein the transmission unit is configured to transmit the first type of control signaling and data in each resource period of the selected one resource configuration when the transmission is periodic and the data packets have the same size; when the sent data is a service with periodicity and different data packet sizes, selecting a plurality of resource configurations to transmit data packets with different sizes, wherein the size of each data packet corresponds to one resource configuration, sending a first type of control signaling and data only in the next nearest resource period of the corresponding resource configuration for an arriving data packet, and sending a second type of control signaling only in the resource period position of other resource configurations without data to be sent; when the aperiodic service is sent, selecting a resource configuration to transmit data, and only when the data arrives, sending the first type of control signaling and the data in the next nearest resource period, and only sending the second type of control signaling in other resource periods without the data to be sent.
12. The apparatus of claim 9, wherein the first type of control signaling includes information of resource configuration, information of reserved time for the resource configuration, and information necessary for decoding data; the second type of control signaling contains information of the resource configuration and the reserved time information of the resource configuration, but does not contain necessary information of decoding data.
13. A terminal, characterized in that it comprises transmission resource configuration selection means according to any one of claims 7 to 12.
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| CN201811141560.3A CN110972273B (en) | 2018-09-28 | 2018-09-28 | Transmission resource configuration selection method, device and terminal |
| PCT/CN2019/107491 WO2020063578A1 (en) | 2018-09-28 | 2019-09-24 | Transmission resource configuration selection method and apparatus, and terminal |
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| WO2020063578A1 (en) | 2020-04-02 |
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