CN111417207B - Resource allocation method and device, equipment and storage medium - Google Patents
Resource allocation method and device, equipment and storage medium Download PDFInfo
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- CN111417207B CN111417207B CN201910013277.0A CN201910013277A CN111417207B CN 111417207 B CN111417207 B CN 111417207B CN 201910013277 A CN201910013277 A CN 201910013277A CN 111417207 B CN111417207 B CN 111417207B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
- H04B17/327—Received signal code power [RSCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
Abstract
The embodiment of the application discloses a resource allocation method, a device, equipment and a storage medium, wherein the method comprises the following steps: the terminal determines an energy perception threshold of the terminal according to the terminal type of the terminal and the service type of the terminal transmission service; and the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold.
Description
Technical Field
The embodiments of the present application relate to, but are not limited to, internet of vehicles technology of all interconnections (Vehicle to Everything, V2X), and in particular, to a resource allocation method, a device, equipment, and a storage medium.
Background
When the long term evolution (Long Term Evolution, LTE) vehicle and the V2X internet of vehicles are allocated with spectrum, the same frequency may be allocated to a Road Side Unit (RSU) and an On Board Unit (OBU), and at this time, the RSU and the OBU compete for preempting the common resource may cause problems of increased time delay, lack of transmission resources in emergency, and possible co-channel interference. The mode3 (mode 3) terminal in a connection state can avoid the problems in a base station scheduling mode, but for the mode4 (mode 4) terminal, an effective scheme is lacking in the aspects of standard and enterprise standard at present, so that the problems caused by the competition of the same-frequency resources of the RSU and the OBU are avoided.
Disclosure of Invention
In view of this, embodiments of the present application provide a resource allocation method, apparatus, device, and storage medium for solving at least one problem existing in the related art.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the application provides a resource allocation method, which comprises the following steps:
the terminal determines an energy perception threshold of the terminal according to the terminal type of the terminal and the service type of the terminal transmission service;
and the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold.
An embodiment of the present application provides a resource allocation apparatus, including:
the determining unit is used for determining an energy perception threshold of the terminal according to the terminal type of the terminal and the service type of the terminal transmission service;
and the configuration unit is used for carrying out resource configuration according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold value.
The embodiment of the application provides resource allocation equipment, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor realizes the steps in the resource allocation method when executing the program.
The embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the resource allocation method described above.
In the embodiment of the application, a terminal determines an energy perception threshold of the terminal according to the terminal type of the terminal and the service type of the terminal transmission service; the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold; therefore, the terminal type with high priority is guaranteed to have higher resource preemption opportunities, the situation that the terminal with high priority has no available resources is avoided, and the frequency spectrum sharing of the terminals with different types can be realized, so that the frequency spectrum utilization rate is improved.
Drawings
Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an implementation flow of a resource allocation method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an implementation flow of a resource reconfiguration method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a composition structure of a resource allocation apparatus according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a hardware entity of a terminal in an embodiment of the present application.
Detailed Description
For LTE-V2X services, there are two resource allocation methods for a User Equipment (UE also called a terminal): a resource configuration is automatically selected based on the scheduled resource configuration (Automatic Resource Selection).
Wherein for a UE using an automatically selected resource configuration, the resource configuration is in resource pool units, one resource pool comprising a number of sub-channels (sub-channels), one sub-channel comprising a plurality of physical resource blocks (Physical Resource Block, PRBs).
The method of automatically selecting the resource configuration can be used regardless of whether the terminal is within the coverage of the large network. The terminal obtains the corresponding resource pool configuration information according to the different states in the following three modes:
mode 1) for terminals in the radio resource control (Radio Resource Control, RRC) IDLE (rrc_idle) state or RRC CONNECTED (rrc_connected) state within the coverage area of the large network, a system information block (System Information Block, SIB) 21 may be broadcasted by the base station, broadcasting a series of messages such as resource pool configuration for all terminals;
mode 2) for a terminal in the coverage area of the large network and in the rrc_connected state, the base station may include a resource pool configuration condition in the RRC reconfiguration message;
Mode 3) a series of resource pool configuration messages are preconfigured for the terminal through a preconfiguration form.
The terminal in the standard selects one resource pool among a set of configured resource pools for control and data transmission and reception. The selection method comprises the following steps: 1) If there is a geographical area configuration message (zone-config) in SIB21, the pre-configuration message and the RRC reconfiguration message, the terminal selects only one resource pool to control and data transmission according to its own geographical area using a one-to-one correspondence between the resource pools in the configuration message and the geographical area (zone). 2) If the geographical area configuration message does not exist in the configuration message, the UE randomly selects a first resource pool in the configured resource pool list for sending and receiving.
After the resource pool is defined, the UE can select a corresponding sub-channel based on a random selection or Partial Sensing (Partial Sensing) mode; in the physical layer sensing (sensing) process, the terminal selects a sub-channel (sub-channels) with reference signal received power (Reference Signal Receiving Power, RSRP) greater than a threshold and a smaller received signal strength indicator (Side-link Received Signal Strength Indication, S-RSSI) as a candidate sub-channel for transmission and reception.
According to the configuration condition of the received resource pool, the mode4 terminal in the current standard uses a sensing method to select the sub-channel resource position required by the self MAC layer to transmit, and performs data transmission. Sensing means that the terminal measures the power of the DMRS reference signal in the uplink subframe exclusive to the Internet of vehicles, and the measured power value is defined as an RSRP value in a standard. The UE determines an index value in a threshold value list according to the priority Prio_TX of own service and the Prio_RX in the demodulated SCI format1, then finds a corresponding RSRP threshold value in the threshold value list, compares the measured RSRP with the RSRP threshold value, and considers that the resource can be preempted although being occupied at the moment if the measured RSRP is smaller than the threshold value; if the threshold is greater, the resources are considered to be occupied at the moment and cannot be preempted.
The problems in the related art are as follows: in 11 months 2018, the ministry of industry promulgates LTE-V2X internet of vehicles spectrum planning, prescribing that RSUs and OBUs share 20MHz spectrum resources in 5905-5925 MHz. The RSU and the OBU occupy the common resource through competition, which causes the problems of increased time delay, lack of transmission resources in emergency, possible co-channel interference, packet loss, and the like. The mode3 terminal in a connection state can avoid the problems in a base station scheduling mode, but for the mode4 terminal, an effective scheme is lacking in the aspects of standard and enterprise standard at present to avoid the problems caused by the competition of the same-frequency resources of the RSU and the OBU, and a system simulation result shows that when the system load is 60%, the packet loss rate of the terminal is increased, and the coverage area cannot be ensured.
The technical solutions of the present application are further described in detail below with reference to the drawings and examples.
In this embodiment, a network architecture is provided first, fig. 1 is a schematic diagram of a composition structure of the network architecture in this embodiment, and as shown in fig. 1, the network architecture includes two or more terminals 11 to 1N and a base station 31, where the terminals 11 to 1N and the base station 31 interact through a network 21.
The present embodiment proposes a resource allocation method, which is applied to a terminal, where the functions implemented by the method may be implemented by a processor in the terminal invoking program codes, and of course the program codes may be stored in a computer storage medium, where the terminal at least includes a processor and a storage medium.
Fig. 2 is a schematic implementation flow chart of a resource allocation method according to an embodiment of the present application, as shown in fig. 2, where the method includes:
step S201, a terminal determines an energy perception threshold of the terminal according to the terminal type of the terminal and the service type of the terminal transmission service;
here, the terminal type includes a transmitting device type and a receiving device type;
here, the energy sensing threshold may be an RSRP threshold.
Step S202, the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold.
In some embodiments, the resource allocation performed by the terminal according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold includes: if the energy value measured by the terminal is greater than or equal to the energy sensing threshold, determining that the resources to be configured cannot be preempted continuously; and if the energy value measured by the terminal is smaller than the energy sensing threshold value, determining that the resources to be configured can be preempted continuously.
In some embodiments, the determining, by the terminal, the energy perception threshold of the terminal according to the terminal type and the service type of the service to be sent by the terminal includes:
the terminal inquires a preset first mapping relation table according to the terminal type and the service type of the service to be sent by the terminal to obtain an energy perception threshold of the terminal;
or alternatively, the process may be performed,
the terminal inquires a preset second mapping relation table according to the terminal type and the service type of the service to be sent by the terminal, and an index value in a preset threshold list is obtained; and determining the energy perception threshold of the terminal according to the index value in the threshold list.
In some embodiments, the method further comprises: the receiving base station indicates the priority of the terminal type in the following message: the system comprises a resource configuration message, a through mode control indication message and a system message.
The terminal type comprises a sending device type and a receiving device type, wherein the priority of the terminal device type refers to whether the priority of the receiving device type is higher than that of the sending device type.
Wherein, the following messages are also used for indicating the following information: for the same class of traffic, the priority difference between the priority of the transmitting device type and the priority of the transmitting device type.
Wherein the priority of the terminal type is related to the frequency point.
In some embodiments, the determining, by the terminal, the energy perception threshold of the terminal according to the terminal type and the service type of the service to be sent by the terminal includes: the terminal determines an index value in a preset threshold list according to the terminal type and the service type of the service to be sent by the terminal; and determining the energy perception threshold of the terminal according to the index value in the threshold list.
The embodiment of the application provides a resource configuration method, wherein the terminal type comprises a sending equipment type and a receiving equipment type, and the method comprises the following steps:
step S211, the terminal inquires a preset first mapping relation table according to the terminal type and the service type of the service to be sent by the terminal, and an energy perception threshold of the terminal is obtained;
Here, step S221 provides a way to implement step S201. The terminal type comprises a sending equipment type and a receiving equipment type; the energy sensing threshold may be an RSRP threshold.
In some embodiments, the first mapping table further includes a first table, a second table, and a third table, where the first table is used to represent a mapping table when the priority of the type of transmitting device is higher than the priority of the type of transmitting device, the second table is used to represent a mapping table when the priority of the type of transmitting device is lower than the priority of the type of transmitting device, and the third table is used to represent a mapping table when the priority of the type of transmitting device is equal to the priority of the type of transmitting device, and the method further includes: determining the high-low relation between the priority of the sending equipment type and the priority of the sending equipment type, and if the relation is higher than the priority of the sending equipment type, inquiring the first table; and if the energy sensing threshold value is lower than the threshold value, the second lookup table is searched, and if the energy sensing threshold value is equal to the threshold value, the third lookup table is searched, and finally the energy sensing threshold value is obtained.
And step S212, the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold.
In some embodiments, the resource allocation performed by the terminal according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold includes: if the energy value measured by the terminal is greater than or equal to the energy sensing threshold, determining that the resources to be configured cannot be preempted continuously; and if the energy value measured by the terminal is smaller than the energy sensing threshold value, determining that the resources to be configured can be preempted continuously.
In some embodiments, the terminal type includes a sending device type and a receiving device type, where the first mapping relation table is used to indicate a mapping table between a service priority corresponding to the sending device type and a service priority corresponding to the receiving device type and an energy perception threshold of the terminal;
wherein the first mapping relation table comprises:
the first mapping relation sub-table is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is higher than that of the sending equipment type;
the first mapping relation sub-table II is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is lower than the priority of the sending equipment type;
and the first mapping relation sub-table III is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is equal to the priority of the sending equipment type.
The embodiment of the application provides a resource configuration method, wherein the terminal type comprises a sending equipment type and a receiving equipment type, and the method comprises the following steps:
step S221, the terminal inquires a preset second mapping relation table according to the terminal type and the service type of the service to be sent by the terminal, and an index value in a preset threshold list is obtained;
step S222, determining an energy sensing threshold of the terminal according to the index value in the threshold list.
Here, step S221 and step S222 provide a way to implement step S201. The terminal type comprises a sending equipment type and a receiving equipment type; the energy sensing threshold may be an RSRP threshold.
In some embodiments, the second mapping table further includes a first table, a second table, and a third table, where the first table is used to represent a mapping table when the priority of the type of transmitting device is higher than the priority of the type of transmitting device, the second table is used to represent a mapping table when the priority of the type of transmitting device is lower than the priority of the type of transmitting device, and the third table is used to represent a mapping table when the priority of the type of transmitting device is equal to the priority of the type of transmitting device, and the method further includes: determining the high-low relation between the priority of the sending equipment type and the priority of the sending equipment type, and if the relation is higher than the priority of the sending equipment type, inquiring the first table; if the index value is lower than the first index value, the second index value is queried, and if the index value is equal to the first index value, the third index value is queried.
In step S223, the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy sensing threshold.
In some embodiments, the resource allocation performed by the terminal according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold includes: if the energy value measured by the terminal is greater than or equal to the energy sensing threshold, determining that the resources to be configured cannot be preempted continuously; and if the energy value measured by the terminal is smaller than the energy sensing threshold value, determining that the resources to be configured can be preempted continuously.
The terminal type comprises a sending equipment type and a receiving equipment type, wherein the second mapping relation table is used for indicating a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value;
wherein the second mapping relation table comprises:
a second mapping relation table one, which is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is higher than the priority of the sending equipment type;
A second mapping relation sub-table is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is lower than the priority of the sending equipment type;
and the second mapping relation sub-table III is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is equal to the priority of the sending equipment type.
The embodiment of the application provides a resource configuration method, wherein the terminal type comprises a sending equipment type and a receiving equipment type, and the method comprises the following steps:
step S231, for the same kind of service, determining a priority difference between the priority of the transmission equipment type and the priority of the transmission equipment type;
step S232, inquiring a preset third mapping relation table according to the priority difference value, the service priority corresponding to the type of the sending equipment and the service priority corresponding to the type of the receiving equipment to obtain an energy perception threshold of the terminal;
here, step S231 and step S232 provide a way to implement step S201. The terminal type comprises a sending equipment type and a receiving equipment type; the energy sensing threshold may be an RSRP threshold.
In some embodiments, the third mapping table may be a mapping table (similar to the first mapping table) about an energy perception threshold, or may be a mapping table (similar to the second mapping table) about an index value, so that the third mapping table is used to indicate a mapping table between a service priority corresponding to a transmitting device type and a service priority corresponding to a receiving device type and the energy perception threshold of the terminal; the third mapping relation table is used for indicating a mapping table between the service priority corresponding to the type of the sending equipment, the service priority corresponding to the type of the receiving equipment and the index value. Although the third mapping table is the same as the first or second mapping table in the kind of contents, the third mapping table is longer in sequence length than the first or second, and the first and third mapping tables are exemplified, the first mapping table may be referred to tables 1 to 3 of the following embodiments, and the third mapping table may be referred to tables 4 to 6 of the following embodiments, and it can be seen that although the meaning of the row or column representation in the table and the contents in the table are the same, table 4 is larger than table 6. The length of the sequence with more rows or columns is exactly the value of the priority difference X.
In step S233, the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy sensing threshold.
The embodiment of the application provides a resource configuration method, wherein the terminal type comprises a sending equipment type and a receiving equipment type, and the method comprises the following steps:
step S241, the terminal determines a service priority priodx corresponding to a receiving device type and a service priority priodx corresponding to a transmitting device type;
step S242, calculating an index value i in the threshold list according to the following formula by using the priodx and the priodx:
if the service priority PrioTX corresponding to the transmitting device type is higher than the service priority priodx corresponding to the receiving device type, i= (priotx+x) X8+priodx+1;
if the service priority priodx corresponding to the transmitting device type is equal to the service priority priodx corresponding to the receiving device type, i=priodx×8+priodx+1;
if the service priority priodx corresponding to the transmitting device type is lower than the service priority priodx corresponding to the receiving device type, i=priodx×8+priodx+x+1.
The terminal determines an index value in a preset threshold list according to the terminal type and the service type of the service to be sent by the terminal;
Here, steps S241 and S242 provide a way to implement the step of determining, by the terminal, an index value in a preset threshold list according to the terminal type and the service type of the service to be transmitted by the terminal.
Step S243, determining an energy sensing threshold of the terminal according to the index value in the threshold list.
In step S244, the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy sensing threshold.
In some embodiments, the resource allocation performed by the terminal according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold includes: if the energy value measured by the terminal is greater than or equal to the energy sensing threshold, determining that the resources to be configured cannot be preempted continuously; and if the energy value measured by the terminal is smaller than the energy sensing threshold value, determining that the resources to be configured can be preempted continuously.
In some embodiments, the method further comprises:
the receiving base station indicates the priority of the terminal type in the following message:
resource configuration message, pass-through mode control indication message, system message.
In some embodiments, the terminal types include a transmitting device type and a receiving device type, wherein,
the priority of the terminal device type refers to whether the priority of the receiving device type is higher than the priority of the transmitting device type.
In some embodiments, the following messages are also used to indicate the following information: for the same class of traffic, the priority difference between the priority of the transmitting device type and the priority of the transmitting device type.
In some embodiments, the priority of the terminal type is related to a frequency bin.
In some embodiments, if the priority difference is X and the index value is included in the third mapping table, the sequence length of the threshold list is 8 2 Long expansion (8+X) 2 。
A first part:
example 1
According to a resource pool configured by a system message, a mode4 terminal in the current standard uses a sensing method to select the number of sub-channels required by the transmission of an own MAC layer, and performs data transmission. Sensing means that the terminal measures the power of the DMRS reference signal in the uplink subframe exclusive to the Internet of vehicles, and the measured power value is defined as an RSRP value in a standard.
The UE decides an index value in a threshold value list according to the priority Prio_TX of own service and Prio_RX in the demodulated SCI format1, then finds a corresponding RSRP threshold value in the threshold value list, compares the measured RSRP with the RSRP threshold value, and considers that the resource can be preempted although being occupied at the moment if the measured RSRP is smaller than the threshold value. It should be noted that, the UE is used as a transmitting terminal or a sensing terminal, and the terminal obtained by demodulation is used as a receiving terminal or a sensed terminal, so if the terminal type of the terminal is the transmitting terminal type, it indicates that the terminal is the transmitting terminal, and correspondingly, the priority of the terminal is prio_tx; if the terminal type of the terminal is the receiving terminal type, the terminal is indicated to be the receiving terminal, and accordingly, the priority of the terminal is Prio_RX.
According to the scheme, the fact that the priority of the RSU and the OBU in different frequency points in the actual operation process is different is considered, and the terminals of the high priority type need to be guaranteed to obtain corresponding resources first. Thus, in addition to determining RSRP threshold according to traffic priority (PPPP) in the standard, embodiments of the present application will introduce a method of RSRP threshold selection according to OBU and RSU type and traffic priority.
An embodiment of the present application provides a resource reconfiguration method, and fig. 3 is a schematic implementation flow diagram of the resource reconfiguration method in the embodiment of the present application, as shown in fig. 3, where the method includes:
here, the base station transmits a system message (for example, SIB 21) or a reconfiguration message (for example, RRC reconfiguration message) to each terminal including UE1, UE2 and UE3 in the internet of vehicles, and in this embodiment, UE1 to UE3 are described as an example.
The base station indicates the following information within SIB21 or RRC reconfiguration message: the information of the type of the high-priority terminal and the priority difference information of the preempting resources of the high-priority terminal and the low-priority terminal of the same service. The former is represented by 1bit, which is used to indicate which type of terminal has higher priority; the latter is used to indicate how much higher the higher priority terminal type is than the lower priority terminal type, competing for resources, for the same traffic, this value being denoted by X. The two kinds of information are related to specific frequency points, and therefore can be placed in the SIB21, the resource pool configuration of the RRC reconfiguration message, and the resource pool configuration message of the frequency point corresponding to v2x-inter freqinfo.
The present embodiment requires expanding the threshold value columnThe sequence length of the table (thresist) is extended from 64 to (8+X) according to the length X 2 To ensure that the added terminal type corresponds to the sequence length of the threshold list; the terminal of the internet of vehicles needs to add its own terminal type in the SCI message, which is represented by 1bit, for example, 1 represents RSU,0 represents OBU, and vice versa.
in step 303, the internet of vehicle UE1 selects a resource pool based on SIB21 or RRC reconfiguration message.
The method comprises the following steps:
1) The terminal UE1 demodulates the service priority PrioRX obtained by the SCI format1 in the sensing process based on the service priority PrioTX to be sent by the terminal UE and the mode4 terminal;
2) The index value i of the threshold list is calculated using PrioTX and priodx according to the following formula.
If the terminal type priodx of the current UE is higher than the terminal type priodx indicated by the demodulated SCI, i= (priodx+x) X8+priodx+1;
if the terminal type priodx of the current UE is equal to the terminal type priodx indicated by the demodulated SCI, i=priodx 8+priodx+1;
if the terminal type priodx of the current UE is lower than the terminal type priodx indicated by the demodulated SCI, i=priodx 8+priodx+x+1;
3) The ith numerical value (i.e. index value i) is found in the SL-ThresPSSCH-RSRP obtained through the SIB21 and the RRC reconfiguration message and is used as an RSRP threshold, if the perceived RSRP is smaller than the RSRP threshold, the resource is considered to be available, otherwise, the resource is considered to be unavailable, and the subsequent perception operation is continued.
Example two
Assuming that the terminal type of UE1 is a, the priority of data to be transmitted is 1, i.e., the priority PrioTX of the receiving terminal type is 1. After UE1 enters the cell, the received SIB21 and RRC reconfiguration message indicate that the RSU has a higher priority than the OBU on the frequency point of interest to UE1, and x=2 (i.e. the priority difference is 2).
If UE1 has data to transmit at this time and detects that rsrp=x of UE2 in the sensing process, the priority field included in the corresponding demodulation SCI format1 is 3 (priosx is 3) and the terminal type of UE2 is B, UE1 calculates a corresponding i according to the following table, and selects a corresponding i-th RSRP value in SL-threspsch-RSRP as an RSRP threshold to compare with the detected rsrp=x, if x < RSRP threshold, it is considered that UE1 can select the resource to transmit data at this time, otherwise, it is considered that the resource is unavailable.
The UE1 calculates the S-RSSI of all the residual available resources, and selects the 20% resources with the minimum S-RSSI, and selects the resources required by the UE1 from the resources for data transmission.
Table 0: RSRP threshold selection table
In the embodiment of the application, the mode4 type internet of vehicles terminal performs resource selection based on the perception method. The method is characterized in that the interference sensing threshold of the internet of vehicles mode4 terminal is determined by combining the terminal type and the service type, so that the high priority terminal is ensured to obtain higher resource preemption opportunity.
In the embodiment of the application, 1) determining an energy perception threshold of a vehicle networking terminal by combining a terminal type and a service type, and distributing different resource preemption probabilities for different types of terminals; 2) Specific terminal types need to be specified in SCI format 1; 3) The system message and the configuration message contain the type of the high-priority terminal and the priority difference of the preempting resources of the high-priority terminal and the low-priority terminal of the same service.
Compared with the prior art, the embodiment of the application has the following advantages: 1) The high-priority terminal type is guaranteed to have higher resource preemption opportunities, and the situation that the high-priority terminal has no available resources is avoided. 2) And the spectrum sharing of different types of terminals is realized, and the spectrum utilization rate is improved.
A second part:
example III
The technical scheme of the embodiment of the application is as follows:
1) Different resource-aware RSRP thresholds are configured for different priorities, wherein the priorities include a priority of a terminal type and a traffic priority.
To implement claim 1), the resource configuration message may include a table of priorities of terminal types, service priorities, and RSRP threshold mapping relationships; the specific mapping relation table representation method comprises the following steps:
a) Different sending and receiving equipment types correspond to different service priority and RSRP threshold mapping tables; there are three different threshold mapping tables, including:
table a1: a mapping table of service priorities corresponding to the high-priority transmitting device type and the low-priority receiving device type and RSRP threshold, see table 2 in the fourth embodiment;
table a2: a mapping table of service priorities corresponding to a low priority transmitting device type and a high priority receiving device type and RSRP threshold, see table 3 in the fourth embodiment;
table a3: service priority and RSRP threshold mapping tables corresponding to the same transmitting and receiving terminal types, see table 1 in the fourth embodiment;
b) And configuring a mapping relation table between the priority and the RSRP threshold, wherein the priority comprises the terminal type priority and the service priority. For the same service priority, defining the priority difference between the high-priority terminal equipment and the low-priority terminal equipment, and if the priorities are the same, only considering different RSRP thresholds corresponding to different service priorities;
To implement claim 1), it is necessary to include a high priority terminal type indication in the resource configuration message and the through mode control indication information. The high-priority terminal type corresponding to the requirement is related to the frequency point, and the priorities corresponding to different terminal types are different from each other at different frequency points.
Embodiment four:
different mapping relation tables between different service priorities and RSRP threshold values are allocated to different sending equipment types and receiving equipment types, and the RSRP threshold values at the same position in the three tables of the following tables 1 to 3 are different.
Table 1: mapping relation between service priority and RSRP threshold corresponding to same terminal type equipment
Table 2: mapping relation between corresponding service priority and RSRP threshold when transmitting terminal type is higher than receiving terminal type
Table 3: mapping relation between corresponding service priority and RSRP threshold when transmitting terminal type is lower than receiving terminal type priority
In the above tables 1 to 3, the row represents the reception traffic priority, and the column represents the transmission traffic priority. Of course, in other embodiments, columns may represent receive traffic priorities and rows may represent transmit traffic priorities.
Fifth embodiment:
and configuring a mapping relation table between the priority and the RSRP threshold, wherein the priority comprises the priority of the terminal type and the service priority.
Assuming the same service priority, the priority difference between the high priority terminal type and the low priority device type is 2; wherein the hatched table in table 4 represents the mapping relationship between the service priority corresponding to the device of the same terminal type and the RSRP threshold (8 types of different service priorities are taken as a whole), the hatched table in table 5 represents the mapping relationship between the service priority corresponding to the sending terminal with higher priority than the receiving terminal type and the RSRP threshold, and the hatched table in table 6 represents the mapping relationship between the service priority corresponding to the sending terminal with lower priority than the receiving terminal type and the RSRP threshold.
TABLE 4 Table 4
TABLE 5
TABLE 6
In the embodiment of the application, 1) different resource-aware RSRP thresholds are configured for different priorities, wherein the priorities include a terminal type priority and a service priority. 2) Different sending and receiving equipment types correspond to different service priority and RSRP threshold mapping tables; 3) And configuring a mapping relation table between the priority and the RSRP threshold, wherein the priority comprises the terminal type priority and the service priority. For the same service priority, defining the priority difference between the high-priority terminal equipment and the low-priority terminal equipment, and if the priorities are the same, only considering different RSRP thresholds corresponding to different service priorities; 4) The resource allocation message and the through mode control indication information need to contain high-priority terminal type indication; 5) The priority of the terminal type is related to the frequency point, and the priorities corresponding to different terminal types are different from each other at different frequency points.
Compared with the prior art, the application has the following technical advantages: 1) The high-priority terminal type is guaranteed to have higher resource preemption opportunities, and the situation that the high-priority terminal has no available resources is avoided. 2) The same-frequency interference problem of the RSU and the OBU when sharing the same resource is effectively reduced, the spectrum sharing of different types of terminals is realized, and the spectrum utilization rate is improved.
Based on the foregoing embodiments, the embodiments of the present application provide a resource allocation apparatus, where the apparatus includes each unit included, and each module included in each unit may be implemented by a processor in a terminal; of course, the method can also be realized by a logic circuit; in an implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
Fig. 4 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present application, as shown in fig. 4, where the apparatus 400 includes:
a determining unit 401, configured to determine an energy perception threshold of the terminal according to the terminal type and a service type of the terminal transmission service;
and the configuration unit 402 is configured to perform resource configuration according to a magnitude relation between the energy value measured by the terminal and the energy sensing threshold.
In some embodiments, the determining unit is configured to query a preset first mapping relationship table according to the terminal type and a service type of a service to be sent by the terminal, so as to obtain an energy sensing threshold of the terminal.
The terminal type comprises a sending equipment type and a receiving equipment type, wherein the first mapping relation table is used for indicating a mapping table between service priorities corresponding to the sending equipment type and the receiving equipment type and the energy perception threshold of the terminal;
wherein the first mapping relation table comprises:
the first mapping relation sub-table is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is higher than that of the sending equipment type;
the first mapping relation sub-table II is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is lower than the priority of the sending equipment type;
and the first mapping relation sub-table III is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is equal to the priority of the sending equipment type.
In some embodiments, the determining unit includes a first determining module, configured to determine an index value in a preset threshold list according to the terminal type and a service type of a service to be sent by the terminal; and the second determining module is used for determining the energy perception threshold of the terminal according to the index value in the threshold list.
In some embodiments, the first determining module is configured to query a preset second mapping relationship table according to the terminal type and a service type of a service to be sent by the terminal, so as to obtain an index value in a preset threshold list.
The second mapping relation table is used for indicating a mapping table between the service priority corresponding to the type of the sending equipment, the service priority corresponding to the type of the receiving equipment and the index value;
wherein the second mapping relation table comprises:
a second mapping relation table one, which is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is higher than the priority of the sending equipment type;
a second mapping relation sub-table is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is lower than the priority of the sending equipment type;
And the second mapping relation sub-table III is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is equal to the priority of the sending equipment type.
In some embodiments, the terminal type includes a transmitting device type and a receiving device type, wherein the determining unit is configured to: for the similar service, determining a priority difference value between the priority of the type of the sending equipment and the priority of the type of the sending equipment; and inquiring a preset third mapping relation table according to the priority difference value, the service priority corresponding to the type of the sending equipment and the service priority corresponding to the type of the receiving equipment to obtain the energy perception threshold of the terminal.
In some embodiments, the apparatus further comprises:
a receiving unit, configured to receive a priority of an indicated terminal type in the following message by the base station:
resource configuration message, pass-through mode control indication message, system message.
Wherein the terminal type includes a transmitting device type and a receiving device type, wherein,
the priority of the terminal type refers to whether the priority of the receiving device type is higher than the priority of the transmitting device type.
Wherein, the following messages are also used for indicating the following information: for the same class of traffic, the priority difference between the priority of the transmitting device type and the priority of the transmitting device type.
Wherein the priority of the terminal type is related to the frequency point.
In some embodiments, if the priority difference is X and the index value is included in the third mapping table, the sequence length of the threshold list is extended from 82 to (8+X) 2.
In some embodiments, the first determining module comprises:
a determining submodule, configured to determine a service priority priodx corresponding to a receiving device type and a service priority priodx corresponding to a sending device type;
a calculating sub-module, configured to calculate an index value i in the threshold list according to the following formula by using PrioTX and priodx:
if the service priority PrioTX corresponding to the transmitting device type is higher than the service priority priodx corresponding to the receiving device type, i= (priotx+x) ×8+priodx+1; if the service priority priodx corresponding to the transmitting device type is equal to the service priority priodx corresponding to the receiving device type, i=priodx×8+priodx+1; if the service priority priodx corresponding to the transmitting device type is lower than the service priority priodx corresponding to the receiving device type, i=priodx×8+priodx+x+1.
In some embodiments, the configuration unit is configured to: if the energy value measured by the terminal is greater than or equal to the energy sensing threshold, determining that the resources to be configured cannot be preempted continuously; and if the energy value measured by the terminal is smaller than the energy sensing threshold value, determining that the resources to be configured can be preempted continuously.
The description of the apparatus embodiments above is similar to that of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the device embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.
In the embodiment of the present application, if the above-mentioned resource allocation method is implemented in the form of a software functional module, and sold or used as a separate product, the resource allocation method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or part contributing to the related art, and the computer software product may be stored in a storage medium, including several instructions for causing a terminal to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
Correspondingly, the embodiment of the application provides a resource allocation device (such as a terminal) which comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor realizes the steps in the resource allocation method when executing the program.
Correspondingly, the embodiment of the application provides a computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the resource allocation method described above.
It should be noted here that: the description of the storage medium and apparatus embodiments above is similar to that of the method embodiments described above, with similar benefits as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present application, please refer to the description of the method embodiments of the present application for understanding.
It should be noted that, fig. 5 is a schematic diagram of a hardware entity of a terminal in an embodiment of the present application, and as shown in fig. 5, the hardware entity of the terminal 500 includes: a processor 501, a communication interface 502 and a memory 503, wherein
The processor 501 generally controls the overall operation of the terminal 500.
The communication interface 502 may enable a terminal to communicate with other terminals or servers over a network.
The memory 503 is configured to store instructions and applications executable by the processor 501, and may also cache data (e.g., image data, audio data, voice communication data, and video communication data) to be processed or processed by each module in the processor 501 and the terminal 500, and may be implemented by a FLASH memory (FLASH) or a random access memory (Random Access Memory, RAM).
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the integrated units described above may be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or part contributing to the related art, and the computer software product may be stored in a storage medium, including several instructions for causing a terminal to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
The foregoing is merely an embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (14)
1. A method of resource allocation, the method comprising:
The terminal determines an energy perception threshold of the terminal according to the priority of the terminal type of the terminal and the service type of the service to be sent by the terminal; the terminal type comprises a sending equipment type and a receiving equipment type; the priority of the terminal type refers to whether the priority of the receiving equipment type is higher than the priority of the sending equipment type;
and the terminal performs resource allocation according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold.
2. The method according to claim 1, wherein the determining, by the terminal, the energy perception threshold of the terminal according to the priority of the terminal type and the service type of the service to be transmitted by the terminal, comprises:
the terminal inquires a preset first mapping relation table according to the priority of the terminal type and the service type of the service to be sent by the terminal to obtain an energy perception threshold of the terminal;
the terminal type comprises a sending equipment type and a receiving equipment type, wherein the first mapping relation table is a mapping table used for indicating the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold of the terminal;
Wherein the first mapping relation table comprises:
the first mapping relation sub-table is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is higher than the priority of the receiving equipment type;
the first mapping relation sub-table II is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is lower than the priority of the receiving equipment type;
the first mapping relation sub-table III is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the energy perception threshold when the priority of the sending equipment type is equal to the priority of the receiving equipment type.
3. The method according to claim 1, wherein the determining, by the terminal, the energy perception threshold of the terminal according to the priority of the terminal type and the service type of the service to be transmitted by the terminal, comprises:
the terminal determines an index value in a preset threshold list according to the priority of the terminal type and the service type of the service to be sent by the terminal;
And determining the energy perception threshold of the terminal according to the index value in the threshold list.
4. A method according to claim 3, wherein the determining, by the terminal, an index value in a preset threshold list according to the priority of the terminal type and the service type of the service to be transmitted by the terminal, includes:
the terminal inquires a preset second mapping relation table according to the priority of the terminal type and the service type of the service to be sent by the terminal, and an index value in a preset threshold list is obtained;
the terminal type comprises a sending equipment type and a receiving equipment type, wherein the second mapping relation table is a mapping table between the index value and the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type;
wherein the second mapping relation table comprises:
the second mapping relation sub-table I is used for representing a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is higher than the priority of the receiving equipment type;
the second mapping relation sub-table is a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is lower than the priority of the receiving equipment type;
And the second mapping relation sub-table III is a mapping table between the service priority corresponding to the sending equipment type and the service priority corresponding to the receiving equipment type and the index value when the priority of the sending equipment type is equal to the priority of the receiving equipment type.
5. The method of claim 1, wherein the terminal type comprises a transmitting device type and a receiving device type, wherein
The terminal determines an energy perception threshold of the terminal according to the priority of the terminal type and the service type of the service to be sent by the terminal, and the method comprises the following steps:
for the similar service, determining a priority difference value between the priority of the type of the sending equipment and the priority of the type of the sending equipment;
and inquiring a preset third mapping relation table according to the priority difference value, the service priority corresponding to the type of the sending equipment and the service priority corresponding to the type of the receiving equipment to obtain the energy perception threshold of the terminal.
6. The method according to any one of claims 1 to 5, further comprising:
the receiving base station indicates the priority of the terminal type in the following message:
resource configuration message, pass-through mode control indication message, system message.
7. The method of claim 6, wherein the following messages are further used to indicate the following information: for the same class of traffic, the priority difference between the priority of the transmitting device type and the priority of the transmitting device type.
8. The method of claim 6, wherein the priority of the terminal type is frequency point dependent.
9. The method of claim 7, wherein if the priority difference is X and the index value is included in the third mapping table, the sequence length of the threshold list is 8 2 Long expansion (8+X) 2 。
10. The method according to claim 9, wherein the determining, by the terminal, an index value in a preset threshold list according to the priority of the terminal type and the service type of the service to be transmitted by the terminal, includes:
the terminal determines a service priority PrioRX corresponding to the type of the receiving equipment and a service priority PrioTX corresponding to the type of the sending equipment;
the terminal calculates an index value i in the threshold list according to the following formula according to PrioTX and PrioRX:
if the service priority PrioTX corresponding to the transmitting device type is higher than the service priority priodx corresponding to the receiving device type, i= (priotx+x) ×8+priodx+1;
If the service priority priodx corresponding to the transmitting device type is equal to the service priority priodx corresponding to the receiving device type, i=priodx×8+priodx+1;
if the service priority priodx corresponding to the transmitting device type is lower than the service priority priodx corresponding to the receiving device type, i=priodx×8+priodx+x+1.
11. The method according to any one of claims 1 to 5, wherein the terminal performs resource allocation according to a magnitude relation between the energy value measured by the terminal and the energy perception threshold, and the method comprises:
if the energy value measured by the terminal is greater than or equal to the energy sensing threshold, determining that the resources to be configured cannot be preempted continuously;
and if the energy value measured by the terminal is smaller than the energy sensing threshold value, determining that the resources to be configured can be preempted continuously.
12. A resource allocation apparatus, the apparatus comprising:
the determining unit is used for determining an energy perception threshold of the terminal according to the priority of the terminal type of the terminal and the service type of the service to be sent by the terminal; the terminal type comprises a sending equipment type and a receiving equipment type; the priority of the terminal type refers to whether the priority of the receiving equipment type is higher than the priority of the sending equipment type;
And the configuration unit is used for carrying out resource configuration according to the magnitude relation between the energy value measured by the terminal and the energy perception threshold value.
13. A resource allocation device comprising a memory and a processor, said memory storing a computer program executable on the processor, characterized in that the processor implements the steps of the resource allocation method according to any of claims 1 to 11 when said program is executed.
14. A computer readable storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the resource allocation method according to any of claims 1 to 11.
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