CN109788570B - Logic channel priority resource scheduling method and device - Google Patents
Logic channel priority resource scheduling method and device Download PDFInfo
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- CN109788570B CN109788570B CN201711122362.8A CN201711122362A CN109788570B CN 109788570 B CN109788570 B CN 109788570B CN 201711122362 A CN201711122362 A CN 201711122362A CN 109788570 B CN109788570 B CN 109788570B
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Abstract
The embodiment of the invention provides a method and a device for scheduling logic channel priority resources. The method comprises the steps that when new data transmission exists, if at least one type of resources distributed by a base station is obtained, the resources at least comprise resource types; judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed; if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to a token bucket variable and a priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
Description
Technical Field
The embodiment of the invention relates to the technical field of mobile communication, in particular to a logic channel priority resource scheduling method and device.
Background
With the increasing demand for new mobile devices, the need for users to diversify and face industry applications, requires communication systems that not only have higher rates, wider bandwidths, but also have higher reliability, lower latency, etc. Currently, 3GPP mainly discusses application scenarios of enhanced mobile bandwidth (eMBB) and high reliability low latency (URLLC), and introduces Grant-free (Grant-free) mechanism for high reliability low latency scenarios to guarantee traffic data transmission with very severe latency requirements. In the ebb scenario, there are also some services with strong burstiness, low transmission delay and small data packets that need to be transmitted, and for such services, unlicensed resources may be used for transmission.
In an LTE system, the main purpose of priority management between UEs is to determine the priority of resources allocated to different UEs according to the QoS of the logical channel in each UE, and the UE with the higher priority obtains resources preferentially. And the priority management in the UE is embodied in the uplink scheduling process, namely the logic channel priority processing is performed to ensure the reasonable allocation of resources among different logic channels in the UE. When the UE obtains the resources allocated by the eNB, the data in the logic channels with high priority are ensured to be sent preferentially according to a certain rule, and meanwhile, the phenomenon that the data in the logic channels with low priority are starved and dead because the transmission resources are not obtained for a long time is avoided. For logic channel priority processing of the LTE system, a token bucket algorithm is adopted. When the bearer is established, the RRC will configure parameters such as Priority, prioritized bit rate (Prioritised Bit Rate, PBR), and token bucket capacity duration (Buket Size Duration, BSD) for each logical channel according to QoS attributes. Where BSD PBR is the capacity of the token bucket.
For URLLC and eMBB scenarios, the uplink resources available to the UE include unlicensed resources and licensed resources. When new data is transmitted, the existing method cannot meet the requirement that different resources perform logic channel priority processing on the UE, and particularly, the method is used in a scene that different types of services with low transmission delay requirements commonly use unlicensed resources.
Disclosure of Invention
The embodiment of the invention provides a method and a device for scheduling logic channel priority resources, which are used for solving the problem that different uplink resources cannot meet the condition that the logic channel priority processing is carried out on UE (user equipment) in the prior art, particularly in the scene that different types of services with low transmission delay requirements commonly use unlicensed resources.
In a first aspect, an embodiment of the present invention provides a method for scheduling resources of a logical channel priority, including:
when new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types;
judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
and if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
In a second aspect, an embodiment of the present invention provides a logic channel priority resource scheduling apparatus, including:
the acquisition module is used for acquiring at least one type of resources allocated by the base station when new data transmission exists, wherein the resources at least comprise resource types;
the judging module is used for judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
and the allocation module is used for screening a logic channel corresponding to the unlicensed resource if the unlicensed resource exists, and allocating the unlicensed resource to the logic channel in sequence according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
In a third aspect, an embodiment of the present invention further provides an electronic device, including:
a processor, a memory, a communication interface, and a bus; wherein, the liquid crystal display device comprises a liquid crystal display device,
the processor, the memory and the communication interface complete the communication with each other through the bus;
the communication interface is used for information transmission between communication devices of the electronic device;
the memory stores program instructions executable by the processor, the processor invoking the program instructions capable of performing the method of:
When new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types;
judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
and if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
In a fourth aspect, embodiments of the present invention also provide a computer program comprising program code for performing the following operations:
the processor is used for calling logic instructions in the memory to execute the following method:
when new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types;
judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
and if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
In a fifth aspect, embodiments of the present invention also provide a storage medium storing a computer program as described above.
According to the embodiment of the invention, the resources are divided into the unlicensed resources and the licensed resources, and the unlicensed resource indication is set in the channel parameters of the logic channel, so that the unlicensed resources can be more reasonably and preferentially allocated in the resource scheduling process, the low-delay requirement of the unlicensed resources is met, and the resource scheduling efficiency is further increased.
Drawings
Fig. 1 is a flowchart of a method for scheduling logical channel priority resources according to an embodiment of the present invention;
FIG. 2 is a flowchart of another method for scheduling resources with priority of logical channels according to an embodiment of the present invention;
FIG. 3 is a flowchart of another method for scheduling resources with priority of a logical channel according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for scheduling resources of a priority class of logical channels according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a logical channel priority resource scheduling device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a flowchart of a method for scheduling logical channel priority resources according to an embodiment of the present invention, as shown in fig. 1, where the method includes:
step S01, when new data transmission exists, if at least one type of resources distributed by a base station is obtained, wherein the resources at least comprise resource types;
when the UE needs to transmit new data to be transmitted, the UE needs to determine, based on uplink resources allocated by the base station, how many resources each type of resources can be used for data on those logical channels and how many resources each logical channel allocates for data transmission.
According to a resource scheduling mechanism, for example, an authorized scheduling mode and an unlicensed scheduling mode, the UE may acquire various types of resources, where the resources at least include resource types. After the UE acquires at least one type of resource, the resource may be allocated to the corresponding logical channel according to the channel parameters of all the logical channels.
Step S02, judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
the resources can be at least divided into unlicensed resources and licensed resources according to the different resource types, wherein the unlicensed resources are unlicensed resources and the licensed resources are licensed resources. When the UE acquires new resources, whether unlicensed resources exist in the resources or not is judged. If yes, step S03 is performed, otherwise step S04 is performed.
And step S03, screening a logic channel corresponding to the unlicensed resource if the unlicensed resource exists, and sequentially distributing the unlicensed resource to the logic channel according to a token bucket variable and a priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
If the UE judges that the unlicensed resources exist in the acquired resources, the logical channels corresponding to the unlicensed resources are screened out according to the channel parameters of all the logical channels, wherein the channel parameters at least comprise unlicensed resource Indication (GrantFree-radio resource-Indication), token bucket variable and priority and data quantity to be transmitted. Wherein the token bucket variable is a variable Bj maintained for each logical channel j. Bj is initialized to 0 at logical channel setup and increases with the product of the priority bit rate (prioritisedBitRate, PBR) and the timentitervalofLCP every time an LCP time interval elapses (timentitervalofLCP). The value of Bj cannot exceed the token bucket size (bucket size), and if the calculated value of Bj is greater than the corresponding token bucket size on the logical channel j, setting Bj as the corresponding token bucket size on the logical channel j. The token bucket capacity of each logical channel is the product of the PBR and the token bucket duration (bucketSizeDuration, BSD), where PBR, BSD and timentitervaloflcp are the channel parameters of the logical channels, respectively. The settings for the PBR are related to specific traffic QoS requirements, which can range from 0 to infinity (infinity). Whereas if the PBR of logical channel j is set to affinity, the token bucket capacity bj=affinity of logical channel j.
When a logical channel corresponding to the unlicensed resource is screened, specifically, an unlicensed resource indication of a channel parameter in the logical channel can be checked, if the unlicensed resource indication is TRUE (TRUE), the unlicensed resource can be allocated to the data to be transmitted stored in the logical channel, and if the unlicensed resource indication is FALSE (FALSE), the unlicensed resource cannot be allocated to the logical channel. Therefore, the logic channel with the unlicensed resource indication being true can be screened out, then the allocation sequence of the logic channel is ordered according to the token bucket variable and the priority, and unlicensed resources are allocated to the logic channel in sequence. Until all the data to be transmitted in the logic channel of the UE are allocated to unlicensed resources, namely the data to be transmitted is 0 or the unlicensed resources are used up. At this time, if only the unlicensed resources exist in the resources acquired by the UE, the scheduling is ended.
When the UE acquires the resources, the UE judges whether the unlicensed resources exist and distributes the unlicensed resources to the data to be transmitted with high time delay requirements, so that the resources can be distributed more reasonably in the resource scheduling process, the unlicensed resources with high time delay requirements can be met preferentially, and the resource scheduling efficiency is improved.
Fig. 2 is a flowchart of another logic channel priority resource scheduling method according to an embodiment of the present invention, as shown in fig. 2, where after the step S03, the method further includes:
and step S04, if the authorized resources exist in the resources, sequentially distributing the authorized resources to all the logic channels according to the token bucket variable and the priority, wherein the resource type of the authorized resources is authorized.
If the authorized resources exist in the resources except the unlicensed resources, after the unlicensed resource scheduling is finished, the allocation of the authorized resources to the logic channel is started. And ordering the logic channels according to the token bucket variables and the priorities, and then sequentially allocating authorized resources to the logic channels. Until all the data to be transmitted in the logical channel of the UE is allocated to the grant resources or the grant resources are exhausted.
Of course, if there is no unlicensed resource in the UE acquired resources at first, step S03 is not present, and step S04 is directly performed, but for the sake of describing the square example, in the following embodiments, only step S03 is used before, and step S04 is illustrated later as an example.
After the authorized resource scheduling is finished, the resource scheduling process is finished, and the UE generates a corresponding MAC PDU and sends data.
After the UE acquires the resources, the unlicensed resources with higher time delay requirements are allocated first, and the licensed resources are reallocated, so that the resources can be allocated more reasonably in the resource scheduling process, the time delay requirements of various data to be transmitted are met, and the resource scheduling efficiency is further improved.
Based on the above embodiment, further, the resource further includes a parameter configuration requirement, and correspondingly, the channel parameter of the logical channel further includes parameter configuration information;
correspondingly, the step S04 specifically includes:
and if the authorized resources exist in the resources, screening the logic channels of which the parameter configuration information corresponds to the parameter configuration requirements, and sequentially distributing the authorized resources to the logic channels according to the token bucket variables and the priorities.
Because the requirements of each type of data to be transmitted on parameters such as time delay, channel state and the like are different, in order to more reasonably allocate resources in the resource scheduling process, the resource acquired by the UE is also added with parameter configuration requirements, and simultaneously, the channel parameters of the logical channel are added with parameter configuration information.
At this time, if the UE has finished the allocation of unlicensed resources and the resources have licensed resources, the UE may start to allocate the licensed resources to the logical channel. And screening logic channels with parameter configuration information meeting the parameter configuration requirements from all logic channels, sorting the screened logic channels according to the token bucket variables and the priorities, and sequentially distributing authorized resources to the logic channels. Until all pending data in the logical channel of the UE is allocated or the grant resources are exhausted.
According to the embodiment of the invention, the parameter configuration requirement is added into the resource, and the authorized resource is only allocated to the logic channel of which the parameter configuration information meets the parameter configuration requirement during resource scheduling, so that the resource can be allocated more reasonably and effectively.
Fig. 3 is a flowchart of another method for scheduling logical channel priority resources according to an embodiment of the present invention, as shown in fig. 3, where step S03 specifically includes:
step S31, if the unlicensed resource exists, sorting the logic channels meeting a first condition according to the priority to form a first logic channel list, wherein the first condition is that the unlicensed resource indication is true and the token bucket variable is >0, and the channel configuration parameters of the logic channels at least comprise the unlicensed resource indication, the token bucket variable and the priority, and the unlicensed resource further comprises an unlicensed resource amount to be allocated;
if the UE judges that the unlicensed resource exists in the acquired resources, the unlicensed resource also comprises unlicensed resource quantity to be allocated, logic channels with unlicensed resource indication of true and token bucket variable >0 in the channel parameters are required to be screened out to form a first logic channel list, and the first logic channel list is ordered according to the priority of the screened logic channels, wherein the priority is higher and lower. The two logical channels with the same priority may be ranked in a random manner, or ranked according to the order of logical channel establishment, or treated equally, which is not limited herein.
Step S32, sequentially obtaining a first to-be-allocated logical channel according to the ordering of the first logical channel list, allocating the unlicensed resource to the first to-be-allocated logical channel according to the token bucket variable, updating the token bucket variable and the to-be-allocated unlicensed resource amount, deleting the first to-be-allocated logical channel from the first logical channel list, and then obtaining a next first to-be-allocated logical channel from the first logical channel list until the first logical channel list is empty or the to-be-allocated unlicensed resource amount is 0.
The UE sequentially acquires the logic channels in the first logic channel list as a first logic channel to be allocated according to the ordering of the first logic channel list, and allocates unlicensed resources to the first logic channel to be allocated according to the token bucket variable and the data quantity to be transmitted of the first logic channel to be allocated. And the maximum amount of the resources which can be allocated in the first logic channel to be allocated is determined by the smaller value in the token bucket variable and the amount of data to be transmitted. Of course, the amount of the unlicensed resource to be allocated in the current unlicensed resource is also dependent on the amount of the unlicensed resource to be allocated, and if the amount of the unlicensed resource to be allocated to the first logic channel to be allocated is sufficient, the amount of the unlicensed resource to be allocated is the maximum amount of the resource that can be allocated to the logic channel; otherwise, the unlicensed resource amount allocated to the first to-be-allocated logical channel is the remaining to-be-allocated unlicensed resource amount of the unlicensed resource. And subtracting the allocated unlicensed resource amount from the token bucket variable, the data amount to be transmitted and the unlicensed resource amount to be allocated respectively to form a new token bucket variable, a new data amount to be transmitted and a new unlicensed resource amount to be allocated, wherein the token bucket variable can be a negative value. If the PBR of the first to-be-allocated logical channel is set to be index, that is, when the token bucket variable=index, the UE allocates the unlicensed resource to all the to-be-transmitted data in the first to-be-allocated logical channel if the to-be-allocated unlicensed resource is sufficiently large. And deleting the first to-be-allocated logical channel from the first logical channel list after the unlicensed resource scheduling of the first to-be-allocated logical channel is completed. And then acquiring a next first logic channel to be allocated from the first logic channel list to perform unlicensed resource scheduling until the logic channels in the first logic channel list are all subjected to unlicensed resource scheduling or the unlicensed resources are used up, namely the unlicensed resources to be allocated are 0.
According to the embodiment of the invention, the resources are divided into the unlicensed resources and the licensed resources, and the unlicensed resource indication is set in the channel parameters of the logic channel, so that the unlicensed resources can be more reasonably and preferentially allocated in the resource scheduling process, the low-delay requirement of the unlicensed resources is met, and the resource scheduling efficiency is further increased.
Fig. 4 is a flowchart of a method for scheduling logical channel priority resources according to another embodiment of the present invention, as shown in fig. 4, where after step S32, the method further includes:
step S33, if the first logical channel list is empty and the to-be-allocated unlicensed resource amount is >0.
If the above unlicensed resource scheduling is completed, that is, if the first logical channel list is empty, it is determined whether the unlicensed resource is already used up, that is, whether the amount of unlicensed resource to be allocated is 0.
And step S34, sorting the logic channels meeting the second condition according to the priority to form a second logic channel list, wherein the second condition is that the unlicensed resource indication is true.
When it is determined that the unlicensed resources are not used up, i.e., the amount of unlicensed resources to be allocated is >0, the logical channels with the unlicensed resource indication of true can be directly screened out regardless of the token bucket variables of the logical channels, and are ordered according to their priorities to form a second logical channel list.
Step 35, sequentially obtaining a second logic channel to be allocated according to the ordering of the second logic channel list, allocating the unlicensed resource to the second logic channel to be allocated, updating the unlicensed resource amount to be allocated, deleting the second logic channel to be allocated from the second logic channel list, and obtaining a next logic channel to be allocated from the second logic channel list until the second logic channel list is empty or the unlicensed resource amount to be allocated is 0.
And sequentially screening the logic channels in the second logic channel list to be second logic channels to be allocated according to the ordering of the second logic channel list, then allocating unlicensed resources to all the rest waiting data in the second logic channels to be allocated under the condition that the unlicensed resources to be allocated are large enough, updating the waiting data quantity and the unlicensed resources to be allocated, and deleting the second logic channels to be allocated from the second logic channel list. And then acquiring a next second logic channel to be allocated from the second logic channel list, continuing to allocate the unlicensed resource, and so on. Until the second logical channel list is empty or the unlicensed resources are exhausted.
According to the embodiment of the invention, the resources are divided into the unlicensed resources and the licensed resources, and the unlicensed resource indication is set in the channel parameters of the logic channel, so that the unlicensed resources can be more reasonably and preferentially allocated in the resource scheduling process, the low-delay requirement of the unlicensed resources is met, and the resource scheduling efficiency is further increased.
Based on the above embodiment, further, the step S04 specifically includes:
step S41, if authorized resources exist in the resources, sorting the logic channels meeting a third condition according to the priority to form a third logic channel list, wherein the third condition is that the parameter configuration information corresponds to the parameter configuration requirement and the token bucket variable is >0, and the authorized resources further comprise the amount of authorized resources to be allocated;
when the UE has completed the unlicensed resource scheduling and the obtained resources still have licensed resources, the licensed resources still comprise the amount of licensed resources to be allocated, or the UE does not have unlicensed resources in the resources obtained at the beginning, the UE screens all logic channels for the parameter configuration information to meet the parameter configuration requirement and sorts the logic channels with token bucket variable >0 according to the priority level so as to form a third logic channel list.
Step S42, a third logic channel to be allocated is sequentially obtained according to the ordering of the third logic channel list, authorized resources are allocated to the third logic channel to be allocated according to the token bucket variable, the token bucket variable and the authorized resource quantity to be allocated are updated, meanwhile, the third logic channel to be allocated is deleted from the third logic channel list, and then the next third logic channel to be allocated is obtained from the third logic channel list until the third logic channel list is empty or the authorized resource quantity to be allocated is 0;
sequentially acquiring logic channels from a third logic channel list before and after sorting to serve as a third logic channel to be allocated, then allocating authorized resources to the third logic channel to be allocated according to the token bucket variable of the third logic channel to be allocated and the size of the data quantity to be transmitted, and updating the token bucket variable, the data quantity to be transmitted and the data quantity to be allocated authorized resources of the authorized resources. The specific allocation process is the same as the process of allocating unlicensed resources to the first logical channel, and will not be described herein. And deleting the third logic channel to be allocated from the third logic channel list, acquiring the next third logic channel to be allocated from the third logic channel list, and allocating authorized resources to the next third logic channel to be allocated. Until the third logical channel list is empty or the grant resources are exhausted, that is, the amount of grant resources to be allocated for the grant resources is 0.
Step S43, if the third logic channel list is empty and the amount of authorized resources to be allocated is greater than 0, sorting the logic channels corresponding to the parameter configuration information and the parameter configuration requirements according to priority to form a fourth logic channel list;
if the third logical channel list is empty, the authorized resources still remain, and then the logical channels with the parameter configuration information meeting the parameter configuration requirement can be screened from all the logical channels without regard to the variable bucket variables of the logical channels, and then the logical channels are ordered according to the priority level to form a fourth logical channel list.
Step S44, sequentially obtaining a fourth logic channel to be allocated according to the order of the fourth logic channel list, allocating authorized resources to the fourth logic channel to be allocated, updating the amount of authorized resources to be allocated, deleting the fourth logic channel to be allocated from the fourth logic channel list, and obtaining the next fourth logic channel to be allocated from the fourth logic channel list until the fourth logic channel list is empty or the amount of authorized resources to be allocated is 0.
Sequentially acquiring logic channels before and after the sorting of the fourth logic channel list to serve as fourth logic channels to be allocated, then allocating authorized resources to all the remaining data to be transmitted in the fourth logic channels to be allocated under the condition that the remaining amount of the authorized resources to be allocated is large enough, and deleting the fourth logic channels to be allocated from the fourth logic channel list. And then acquiring a next fourth logic channel to be allocated from the fourth logic channel list until the fourth logic channel list is empty or the authorized resources are used up.
In each resource scheduling process in the above embodiments, the following principles need to be complied with:
1) If the whole radio link control service data unit (Radio Link Control Service Data Unit, RLC SDU) (or partially transmitted SDU or retransmitted RLC PDU) and the remaining resources to be allocated are matched in size, it should not be segmented;
2) If the RLC SDU of a certain logical channel is segmented, the length of the segment should be maximized as much as possible to fill up the uplink resources;
3) As much data as possible is transmitted
After the unlicensed resource in the logic channel is scheduled, if the resource still has the licensed resource, the embodiment of the invention can start to allocate the licensed resource to the logic channel, thereby more reasonably allocating the resource scheduling and improving the efficiency.
Based on the above embodiment, further, the method further includes:
and receiving RRC signaling, and setting channel parameters of each logic channel according to the RRC signaling, wherein the channel parameters at least comprise unlicensed resource indication, priority bit rate, token bucket capacity duration, LCP time interval and available parameter set configuration index.
Upon each logical channel establishment, a radio resource control (Radio Resource Control, RRC) signaling sent by the base station is received, with logical channel configuration cells carried in the signaling. The logical channel configuration cell includes a channel configuration parameter for the logical channel. The scheduling of the UE uplink data is controlled by configuring logical channel configuration parameters for each logical channel of the UE. The channel parameters of the logical channel can be specifically set according to the RRC signaling, where the channel parameters include at least unlicensed resource indication, priority bit rate, token bucket capacity duration, LCP time interval, and available parameter set configuration index. The function of each parameter is as follows:
The grant free resource Indication (GrantFree-radio resource-Indication) is used for setting whether the grant free resource can be used for data transmission in the logical channel of the UE.
Priority (priority) for setting a priority level for the logical channel. The higher its value, the lower the priority. Considering the MAC CE and data of different logical channels, in the logical channel priority handling procedure, the following priorities may be considered in descending order:
grantfree-radio resource-Indication is set as data of logical channels of TRUE;
a C-RNTI MAC control unit or data from the UL-CCCH;
a BSR MAC control element other than the padding BSR;
PHR MAC control unit;
data of other logical channels except for the UL-CCCH;
padding BSR MAC control elements.
It should be noted that the priority order decreasing relationship is an illustration. The MAC CEs with other different functions may be designed for subsequent use, and the present invention is not limited to the above examples.
A priority bit rate (priority bit rate) for setting a priority bit rate PBR for the logical channel.
Token bucket capacity duration (bucketSizeDuration) for setting the token bucket capacity duration BSD for the logical channel.
LCP time interval (timeimtervaloflcp) is used to set the time interval for the UE to process the logical channel priority procedure. The UE is instructed by the timeimtervaloflcp to process the logical channel priority procedure internally in one absolute time interval in view of supporting different numerologies/TTIs.
The list of available parameter set configuration index information is a set of lists containing available parameter set configuration index information, in which one or more available parameter set configuration indexes are contained.
An available parameter set configuration index (numerologies index-Allowed) is used to indicate parameter set configuration information corresponding to the index value that data transmission on the logical channel is Allowed to use.
In addition, for the correspondence between the parameter set configuration and the parameter set configuration index value, the network side configures related information, such as MIB or SIB, for the UE in the cell through broadcasting. One or more parameter set configuration information will be included in the configuration. The parameter set index value, the subcarrier interval, the time slot length or the number of OFDM symbols per time slot, the frequency domain resource position indication and the like are included in each parameter set configuration information.
For ease of understanding, an example of a cell structure design for configuring logical channels is given below. The logical channel allocation cells (LogicalChannelConfig IE) are used to configure logical channel parameters, and include ul-specific parameters cells, including grant-radio resource-Indication (GrantFree-radio resource-Indication), priority (priority), priority bit rate (priority), token bucket capacity duration (bucketSizeduration), LCP time interval (LCP), and available parameter set configuration index information list (numerologies-Alloweinfollist) parameters. The specific parameter configuration is as follows:
Wherein the LogicalChannelConfig domain is described as follows:
grantFree-RadioResource-Indication: indicating whether unlicensed resources can be used for data transmission in a particular logical channel of the UE. Where a value of TRUE indicates that data transmission in a particular logical channel of the UE allows use of unlicensed resources. A value of FALSE indicates that data transmission in a specific logical channel of the UE does not allow use of unlicensed resources.
timentitervaloflcp: the UE is instructed to process the logical channel priority procedure at time intervals of timentitervaloflcp. The value is in ms, the value fourteen UT corresponds to 14 x UT, the sevenut corresponds to 7 x UT, and so on, UT is 1/14ms.
bucketsizedduration: token bucket capacity duration in logical channel priority. The value is in ms, the value ms0dot5 corresponds to 0.5ms, the value ms1 corresponds to 1ms, and so on.
numerologies index-allowedindolist: the parameter set configuration index value list indicating that data transmission on a specific logical channel of the UE is allowed to use. When the cell is included, the index value is configured according to a parameter set indicating that data transmission on a specific logical channel of the configured UE is allowed to use. When this cell is not included, it is considered that data transmission on a specific logical channel of the UE allows using all parameter set index values configured at the network side.
numerologies index-Allowed: a parameter set configuration corresponding to the index value indicating that data transmission on a specific logical channel of the UE is allowed to be used.
priority: indicating the priority of the logic channel, and the value is an integer.
prioritisedbittrate: the priority bit rate in the logical channel priority. The unit of value is klobytes/second. The value KBps0 corresponds to 0kB/s, KBps8 corresponds to 8kB/s, and so on. The definition is an ultra low latency service in SRB and URLLC scenarios.
For a list of available parameter set configuration index information, one or more available parameter set configuration indexes are contained in the list, and the indexes are used for indicating available parameter set configurations corresponding to index values for data transmission on a specific logical channel. The UE is configured with the parameter set configuration and the index value corresponding to the parameter set configuration through the MIB or the SIB by the network side. One or more parameter set configuration information will be included in a particular configuration. The parameter set index value, the subcarrier spacing, the slot length or the number of OFDM symbols per slot, the RB resource configuration and the like are included in each parameter set configuration information. The following diagram gives an illustration of the relevant cell structure, taking the SIB containing radio resource configuration information as an example.
The RadioResourceConfigCommonSIB field is described as follows:
numerologies configmnfo: and configuring parameter set related information.
numerologies configindex: index values indicating parameter set configurations.
subtearrierspacengindex: indicating the subcarrier spacing. The different index values correspond to respective subcarrier spacings. For example, the value 0 corresponds to a subcarrier spacing of 15kHz, the value 1 corresponds to a subcarrier spacing of 30kHz, the value 2 corresponds to a subcarrier spacing of 60kHz, etc.
slotLength: indicating the slot length. n1 represents 1 OFDM symbol, n2 represents 2 OFDM symbols, and so on. The length of one OFDM symbol is determined by the subcarrier spacing corresponding to the subsearrierspaceingindex.
Based on the above embodiment, further, the pending data to which the unlicensed resource may be allocated includes at least URLLC service data and eMBB service data.
Considering low latency URLLC traffic and eMBB traffic with strong burstiness, low transmission latency and small packets, both types of traffic can be transmitted using unlicensed resources. The network side controls the uplink scheduling of the UE to the unlicensed resource by configuring the channel parameters of different logical channels.
For low-delay URLLC traffic, the channel parameters of the logical channel where the traffic is located are configured as follows: grantfree-radio resource-Indication is set to TRUE, priority is set to 0, and priority is set to infinity.
For the eMBB service with strong burstiness, low transmission time delay and small data packet, setting the channel parameters of the logical channel where the service is located to be configured as follows: if the network side allows the service to use the unlicensed resource, the grantFree-radio resource-Indication is set to TRUE, otherwise, the grantFree-radio resource-Indication is set to FALSE. The priority is set to other values than 0 (the priority is lower than that of the URLLC service), and the priority is set to be equal to the priority of the URLLC service, and the priority and the bucketsizedduration can be configured by considering the capacity of the token bucket according to the actual service requirements, or the priority can be set to be equal to the infinity.
It should be noted that, when the network side sets the configuration of the priority parameters of the relevant logical channels of the logical channels where the other eMBB services are located, except the eMBB service with strong burstiness, low transmission delay and small data packets, the network side does not allow the network side to use unlicensed resources, and then sets the grant-radio resource-Indication as FALSE.
After the above parameter configuration, if the UE has the low-delay URLLC service to be transmitted and the eMBB service with strong burstiness, low transmission delay and small data packet at the same time, according to the above logic channel priority processing procedure, the UE allocates resources for the logic channel (i.e., the logic channel with grant-radio resource-Indication set as TRUE) that can use unlicensed resources. For the logical channel where the URLLC service is located, the configuration parameter priority is set to be index, and the Bj of the logical channel is always greater than 0, and the priority is configured to be the highest priority, so that the logical channel where the URLLC service is located can allocate unlicensed resources preferentially. That is, when there are unlicensed resources, it is preferable to allocate all unlicensed resources that need to be sent on the logical channel where the URLLC service is located, and if there are remaining unlicensed resources, it is then allocated resources of the logical channel where the ebmb service is located.
In addition, for the eMBB service with strong burstiness, low transmission delay and small data packet, when the grant-radio resource-Indication of the logical channel where the service is located is set to TRUE, not only unlicensed resources but also uplink licensed resources meeting the condition that the parameter configuration information applicable to the allocation of the numerologies index-Allowed for the logical channel corresponds to the parameter configuration requirement corresponding to the resource scheduling instruction can be used.
The embodiment of the invention can more reasonably allocate the uplink resources in the following resource scheduling process by setting the channel parameters when the logic channel is established so as to increase the efficiency of resource scheduling.
Fig. 5 is a schematic structural diagram of a logical channel priority resource scheduling apparatus according to an embodiment of the present invention, as shown in fig. 5, where the apparatus includes: an acquisition module 10, a judgment module 11 and an allocation module 12, wherein:
the acquiring module 10 is configured to, when there is a new data transmission, acquire at least one type of resource allocated by the base station, where the resource at least includes a resource type; the judging module 11 is configured to judge whether an unlicensed resource exists in the resources, where a resource type of the unlicensed resource is unlicensed; the allocation module 12 is configured to screen a logical channel corresponding to the unlicensed resource if the unlicensed resource exists, and allocate the unlicensed resource to the logical channel in sequence according to a token bucket variable and a priority, where a channel parameter of the logical channel at least includes the token bucket variable and the priority.
When the UE needs to transmit new data to be transmitted, the UE needs to determine which logical channels can be used by each type of resources based on uplink resources allocated by the base station, and how many resources are allocated for data transmission by each logical channel. The obtaining module 10 obtains various resources according to a resource scheduling mechanism, for example, an authorized scheduling mode, an unlicensed scheduling mode, etc., where the resources at least include resource types. When the acquiring module 10 acquires at least one type of resource, the resource can be allocated to the corresponding logical channel according to the channel parameters of all the logical channels. The acquiring module 10 sends the acquired information of the resource to the judging module 11, and sends the resource to the scheduling module 12.
When the judging module 11 acquires a new resource, it will first judge whether there is an unauthorized resource in the resources. An unauthorized allocation instruction is sent to the allocation module 12 if present and an authorized allocation instruction is sent to the allocation module 12 if not present.
The allocation module 12, after receiving the unlicensed allocation instruction, needs to screen the logical channels corresponding to the unlicensed resources according to the channel parameters of all the logical channels, specifically, may check the unlicensed resource indication of the channel parameters in the logical channels, if the unlicensed resource indication is TRUE (TRUE), consider that the unlicensed resources may be allocated to the pending data stored in the logical channels, and if the unlicensed resource indication is FALSE (FALSE), the unlicensed resources may not be allocated to the logical channels. Therefore, the logic channel with the unlicensed resource indication being true can be screened out, then the allocation sequence of the logic channel is ordered according to the token bucket variable and the priority, and unlicensed resources are allocated to the logic channel in sequence. Until all the data to be transmitted in the logic channel of the UE are allocated to unlicensed resources, namely the data to be transmitted is 0 or the unlicensed resources are used up. And if only the unlicensed resources exist in the resources acquired by the UE, the scheduling is finished.
The device provided in the embodiment of the present invention is used for executing the above method, and the function of the device specifically refers to the above method embodiment, and the specific method flow is not repeated herein.
When the acquisition module 10 acquires the resources, the judgment module 11 judges whether the unlicensed resources exist or not and distributes the unlicensed resources to the to-be-transmitted data with high time delay requirements by the distribution module 12, so that the resources can be distributed more reasonably in the resource scheduling process, the unlicensed resources with higher time delay requirements can be preferentially met, and the resource scheduling efficiency is further improved.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the invention. As shown in fig. 6, the electronic device includes: a processor (processor) 601, a memory (memory) 602, and a bus 603;
wherein the processor 601 and the memory 602 perform communication with each other through the bus 603;
the processor 601 is configured to invoke program instructions in the memory 602 to perform the methods provided in the above method embodiments, for example, including: when new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types; judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed; and if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
Further, embodiments of the present invention disclose a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the methods provided by the above-described method embodiments, for example comprising: when new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types; judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed; and if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
Further, embodiments of the present invention provide a non-transitory computer readable storage medium storing computer instructions that cause a computer to perform the methods provided by the above-described method embodiments, for example, including: when new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types; judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed; and if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to the token bucket variable and the priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority.
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 associated with program instructions, where the foregoing program may be stored in a computer readable storage medium, and when executed, the program performs steps including the above method embodiments; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
The embodiments of the testing device etc. of the display apparatus described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for scheduling logical channel priority resources, comprising:
when new data transmission exists, if at least one type of resources allocated by the base station is obtained, wherein the resources at least comprise resource types;
judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
if the unlicensed resources exist, screening a logic channel corresponding to the unlicensed resources, and sequentially distributing the unlicensed resources to the logic channel according to token bucket variables and priorities, wherein channel parameters of the logic channel at least comprise the token bucket variables and priorities;
And if the unlicensed resource exists, screening a logic channel corresponding to the unlicensed resource, and sequentially distributing the unlicensed resource to the logic channel according to a token bucket variable and a priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority, and specifically comprise:
if the unlicensed resource exists, ordering the logic channels meeting a first condition according to the priority to form a first logic channel list, wherein the first condition is that the unlicensed resource indication is true and the token bucket variable is >0, and the channel parameters of the logic channels at least comprise the unlicensed resource indication, the token bucket variable and the priority, and the unlicensed resource further comprises an unlicensed resource amount to be allocated;
sequentially obtaining a first logic channel to be allocated according to the ordering of the first logic channel list, allocating the unlicensed resource to the first logic channel to be allocated according to the token bucket variable, updating the token bucket variable and the unlicensed resource amount to be allocated, deleting the first logic channel to be allocated from the first logic channel list, and obtaining the next first logic channel to be allocated from the first logic channel list until the first logic channel list is empty or the unlicensed resource amount to be allocated is 0.
2. The method according to claim 1, wherein the method further comprises:
and if the authorized resources exist in the resources, sequentially distributing the authorized resources to all the logic channels according to the token bucket variable and the priority, wherein the resource type of the authorized resources is authorized.
3. The method of claim 2, wherein the resources further comprise parameter configuration requirements, and wherein the channel parameters of the logical channels correspondingly further comprise parameter configuration information;
correspondingly, if the authorized resource exists in the resources, sequentially allocating the authorized resource to all the logic channels according to the token bucket variable and the priority, wherein the method specifically comprises the following steps:
and if the authorized resources exist in the resources, screening the logic channels of which the parameter configuration information corresponds to the parameter configuration requirements, and sequentially distributing the authorized resources to the logic channels according to the token bucket variables and the priorities.
4. The method according to claim 1, wherein the method further comprises:
if the first logic channel list is empty and the to-be-allocated unlicensed resource amount is greater than 0;
ordering the logical channels meeting a second condition by the priority to form a second logical channel list, wherein the second condition is that the unlicensed resource indication is true;
Sequentially obtaining a second logic channel to be allocated according to the ordering of the second logic channel list, allocating the unlicensed resource to the second logic channel to be allocated, updating the unlicensed resource amount to be allocated, deleting the second logic channel to be allocated from the second logic channel list, and obtaining the next logic channel to be allocated from the second logic channel list until the second logic channel list is empty or the unlicensed resource amount to be allocated is 0.
5. The method of claim 3, wherein if there is an authorized resource in the resources, screening the logical channels of the parameter configuration information corresponding to the parameter configuration requirement, and sequentially allocating the authorized resource to the logical channels according to the token bucket variable and the priority, specifically:
if the authorized resources exist in the resources, sorting the logic channels meeting a third condition according to the priority to form a third logic channel list, wherein the third condition is that the parameter configuration information corresponds to the parameter configuration requirement and the token bucket variable is >0, and the authorized resources further comprise the amount of authorized resources to be allocated;
Sequentially acquiring a third logic channel to be allocated according to the ordering of the third logic channel list, allocating authorized resources to the third logic channel to be allocated according to the token bucket variable, updating the token bucket variable and the amount of authorized resources to be allocated, deleting the third logic channel to be allocated from the third logic channel list, and acquiring the next third logic channel to be allocated from the third logic channel list until the third logic channel list is empty or the amount of authorized resources to be allocated is 0;
if the third logical channel list is empty and the amount of authorized resources to be allocated is greater than 0, sorting the logical channels corresponding to the parameter configuration information and the parameter configuration requirements according to priority to form a fourth logical channel list;
sequentially obtaining a fourth logic channel to be allocated according to the ordering of the fourth logic channel list, allocating authorized resources to the fourth logic channel to be allocated, updating the amount of authorized resources to be allocated, deleting the fourth logic channel to be allocated from the fourth logic channel list, and obtaining the next fourth logic channel to be allocated from the fourth logic channel list until the fourth logic channel list is empty or the amount of authorized resources to be allocated is 0.
6. The method according to claim 1, wherein the method further comprises:
and receiving RRC signaling, and setting channel parameters of each logic channel according to the RRC signaling, wherein the channel parameters at least comprise unlicensed resource indication, priority bit rate, token bucket capacity duration, LCP time interval and available parameter set configuration index.
7. A logical channel priority resource scheduling apparatus, comprising:
the acquisition module is used for acquiring at least one type of resources allocated by the base station when new data transmission exists, wherein the resources at least comprise resource types;
the judging module is used for judging whether an unlicensed resource exists in the resources, wherein the resource type of the unlicensed resource is unlicensed;
the allocation module is used for screening a logic channel corresponding to the unlicensed resource if the unlicensed resource exists, and allocating the unlicensed resource to the logic channel in sequence according to a token bucket variable and a priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority;
and if the unlicensed resource exists, screening a logic channel corresponding to the unlicensed resource, and sequentially distributing the unlicensed resource to the logic channel according to a token bucket variable and a priority, wherein the channel parameters of the logic channel at least comprise the token bucket variable and the priority, and specifically comprise:
If the unlicensed resource exists, ordering the logic channels meeting a first condition according to the priority to form a first logic channel list, wherein the first condition is that the unlicensed resource indication is true and the token bucket variable is >0, and the channel parameters of the logic channels at least comprise the unlicensed resource indication, the token bucket variable and the priority, and the unlicensed resource further comprises an unlicensed resource amount to be allocated;
sequentially obtaining a first logic channel to be allocated according to the ordering of the first logic channel list, allocating the unlicensed resource to the first logic channel to be allocated according to the token bucket variable, updating the token bucket variable and the unlicensed resource amount to be allocated, deleting the first logic channel to be allocated from the first logic channel list, and obtaining the next first logic channel to be allocated from the first logic channel list until the first logic channel list is empty or the unlicensed resource amount to be allocated is 0.
8. An electronic device comprising a memory and a processor, said processor and said memory completing communication with each other via a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1-6.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method according to any one of claims 1 to 6.
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