WO2021017453A1

WO2021017453A1 - Scheduling method for multi-configuration resources

Info

Publication number: WO2021017453A1
Application number: PCT/CN2020/073698
Authority: WO
Inventors: 焦慧颖
Original assignee: 中国信息通信研究院
Priority date: 2019-07-30
Filing date: 2020-01-22
Publication date: 2021-02-04
Also published as: CN112312573B; CN112312573A

Abstract

The present application discloses a scheduling method for multi-configuration resources, used for business scheduling when N unauthorized resources are configured, and characterized by comprising the following steps: the configuration information comprising configuration identifiers which indicate the transmission priority of N configurations; when at least two of the N configuration resources are in conflict, configuring the priority of the identifiers according to at least one of such parameters as the period, the transmission duration, the starting time and the MCS level. The present application may solve the problem of conflicting resources scheduled by multiple configurations.

Description

Multi-configuration resource scheduling method

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 201910696594.7, and the invention title is "a method for scheduling multiple configuration resources" on July 30, 2019. The entire content of the earlier application is approved The reference is incorporated in this application.

Technical field

This application relates to the field of mobile communication technology, and in particular to a scheduling method for multiple configuration resources.

Background technique

To better support low-latency data transmission, NR introduces uplink scheduling-free transmission in the uplink. In the uplink data transmission based on the first type of configuration authorization, the configuration of the high-level parameter ConfiguredGrantConfig includes time domain resources, frequency domain resources, demodulation reference signal (DM RS), open loop power control, modulation and coding scheme (Modulation and Coding Scheme, That is, all transmission resources and transmission parameters including MCS, waveform, redundancy version (RV), number of repetitions, frequency hopping, HARQ process number, etc. After receiving the high-level parameters, the UE can immediately use the configured transmission parameters to perform uplink data transmission on the configured time-frequency resources.

Due to the diversity of business types, multiple configured resources are required to meet the needs of different businesses. There are two main types of services: the first is to support semi-persistent periodic services, such as LTE and NRV2X, and the second is to support enhanced low-latency and high-reliability (eURLLC) services, such as remote driving. The traffic models of these two types of services can be abstracted as half-period behaviors. For example, the period is constant, but the packet size changes rapidly, or both the packet size and period change so that it can be divided into multiple periods. It also facilitates quick activation and deactivation of certain configurations to better adapt to traffic conditions. Therefore, considering that multiple configurations meet different traffic conditions, the parameters of multiple different configurations, such as MCS and transmission length, are different, or because the arrival time and arrival period of the data stream are also different, so the period or data transmission length is also Different, use this method to meet the business quality requirements of different business flows.

In the existing Rel 15-stage 3GPP standard, when the configured and scheduled resources conflict with the dynamically scheduled resources, the MAC layer always prioritizes the dynamically scheduled resources, provided that the terminal has enough time to process the dynamic scheduling. In order to avoid the situation that the terminal does not have enough time to process the dynamic scheduling, the physical layer further defines that the terminal will not be scheduled for effective uplink configuration scheduling transmission timing before the dynamic scheduling is processed.

When multiple authorization-free resources are configured, the configured resources may overlap in time. For example, when eMBB and URLLC are scheduled separately, it is difficult to find the time and time for short-period URLLC services. Non-overlapping resources for eMBB services are configured. Therefore, when time resource conflicts should be considered, how does the terminal know which kind of service is allowed to be sent, that is, which configuration exempt scheduling resources can be used for sending.

Summary of the invention

This application proposes a multi-configuration resource scheduling method to solve the problem of multi-configuration scheduling resource conflict.

The embodiment of the present application provides a multi-configuration resource scheduling method, which is used for service scheduling when N unauthorized resources are configured, including the following steps:

The configuration information includes a configuration identification identifier, which indicates the sending priority of N configurations;

When at least two of the N configuration resources conflict:

Use the at least 2 resource allocation cycles to determine the priority,

If the at least two configured resource periods are the same, use at least one parameter (or a combination of parameters) among the transmission duration, start time, and MCS level of the two configured resources to determine the priority;

When the value of the at least one parameter (or a combination of parameters) is the same, the order in which the at least two configuration resources send services is determined according to the priority indicated by the configuration identification identifier.

Preferably, when the periods of at least two configuration resources of the N configuration resources are different, the order of sending services of the at least two configuration resources is such that a shorter period has a higher priority.

Preferably, when the periods of at least two of the N configuration resources are the same, the order of sending services of the at least two configuration resources determines the priority according to the transmission duration, and the priority of the short data transmission duration is higher.

Preferably, when the period and transmission duration of at least two configuration resources among the N configuration resources are the same, the order of sending services of the at least two configuration resources determines the priority according to the data start time, and the earlier start time has priority High-level.

Preferably, when the period, transmission duration, and start time of at least 2 configuration resources among the N configuration resources are the same, the order of sending services of the at least 2 configuration resources determines the priority according to the MCS level. High priority.

Preferably, when the period, transmission duration, start time, and MCS level of at least 2 of the N configuration resources are the same, the order of sending services of the at least 2 configuration resources is determined according to the configuration identification identifier. .

Preferably, in at least one embodiment of the present application, the MAC layer first distinguishes the priorities; when the MAC layer cannot distinguish the priorities, the N scheduling resources are respectively generated into N corresponding PDUs, and then according to the aforementioned at least one embodiment Method to determine priority.

In the solution of the present application, preferably, the upper layer configures N independent resources, and the content of the configuration includes N configuration identification identifiers (IDs), which indicate the transmission priority of the N configurations. When the N configuration and scheduling resources are in the time domain In case of conflict, the priority selection of N configuration resources is performed in the following order:

First, the MAC layer distinguishes priority. When the terminal MAC layer can preferentially process the nth (n=1, 2, ..., N) configuration resource, the nth configuration resource is set to be sent with the highest priority;

When the MAC layer cannot distinguish the priority of N configuration resources, the MAC layer generates N corresponding PDUs for the N configuration resources, and the physical layer distinguishes them according to the configuration period of the N configuration resources. The shorter period has a higher priority;

When the cycle is the same, it is distinguished according to the data transmission duration of N configuration resources, and the priority of the data transmission duration of the configuration resource is short;

When the period and the transmission duration are the same, it is distinguished according to the data start time of the N configuration resources, and the start time of the configuration resource has a higher priority;

When the cycle, transmission duration, and start time are the same, they are distinguished according to the data MCS level of the N configuration resources, and the lower MCS level of the configuration resource has a higher priority;

When the period, transmission duration, start time, and MCS level are the same, they are distinguished according to the configuration identification identifiers of the N configuration resources. For example, a smaller configuration identification identifier has a higher priority.

The foregoing at least one technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

When configuring multiple authorized resources, if the time domain resources conflict, find the configuration with the highest priority and send the corresponding configuration business data.

Description of the drawings

Figure 1 is a schematic diagram of MAC layer prioritization;

Figure 2 is a schematic diagram of the MAC layer cannot distinguish priority;

Fig. 3 is a schematic diagram of the physical layer selecting a scheduling resource with a short period to send uplink data;

Figure 4 shows that the physical layer selects a scheduling resource with a short sending duration to send uplink data;

Figure 5 shows that the physical layer selects the scheduling resource with an early start symbol to send uplink data;

Figure 6 shows that the physical layer selects scheduling resources with a low MCS level to send uplink data;

Figure 7 shows that the physical layer selects and configures an ID with a small priority value to send uplink data.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The main idea of the present invention is to configure authorized scheduling ID information and priority information when configuring N authorized scheduling at a higher level. When the terminal receives N authorized scheduling configuration parameters, how to choose a high priority if there are sometimes domain resource conflicts The authorized scheduling resource for uplink data transmission solves the problem of multiple configuration scheduling resource conflicts.

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments.

The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The embodiment of the application provides a multi-configuration resource scheduling method, which is used for service scheduling when N unauthorized resources are configured. The configuration information includes a configuration identification identifier, which indicates the transmission priority of the N configurations; the scheduling can be configured for the N configurations by a higher layer The resource (referred to as "configuration resource" in this application) configuration ID information corresponds to the corresponding priority. The smaller the ID value, the higher the priority. For example, in the high-level configuration ConfiguredGrantConfig to increase the ID parameter, the defined value is INTEGER (1..N), the smaller the ID value, the higher the priority.

Figure 1 is a schematic diagram of MAC layer prioritization.

Embodiment 1: First, the MAC layer distinguishes priority. For example, the base station is configured with a maximum of 8 authorized scheduling, and 8 sets of high-level parameters are configured for authorized scheduling. The terminal device sends uplink data on the resources corresponding to the two sets of parameters. When the two sets of resources conflict in time, the terminal device The MAC layer priority is used to determine the specific resource to send uplink data.

The LCP of the MAC layer distinguishes priority. The terminal device maps different services to different logical channels, and configures different priorities of the logical channels to distinguish. As shown in Figure 1, LCP1 is mapped to URLLC data transmitted based on mini-slot scheduling, and LCP2 is used to map to eMBB data scheduled with time slot, so that priorities can be distinguished. The two shaded parts in the time slot in Figure 1 represent two types of scheduled resources.

For clarity of description, this application uses the abbreviation "configuration resource" to indicate configured scheduling resources, that is, resources that can be used to schedule uplink data after configuration.

Figure 2 is a schematic diagram of the MAC layer being unable to distinguish priorities.

As shown in Figure 2, when LCP2 is mapped to the physical resources of URLLC and eMBB service data, there is no way to distinguish them by the MAC layer. At this time, the physical layer distinction method needs to be enabled.

In the terminal device, using the physical layer distinction method, when at least two configuration resources among the N configuration resources conflict: first use the periods of the at least two configuration resources to determine the priority, and the at least two configuration resource periods Similarly, at least one parameter (or a combination of parameters) among the transmission duration, start time, and MCS level of the at least two configuration resources is used to determine the priority; when the at least one parameter (or parameter When the combination) has the same value, the order in which the at least two configuration resources send services is determined according to the priority indicated by the configuration identification identifier.

Fig. 3 is a schematic diagram of the physical layer selecting a scheduling resource with a short period to send uplink data.

Embodiment 2: When the MAC layer cannot distinguish the priority, the N scheduling resources are respectively generated N corresponding PDUs, and the physical layer distinguishes according to the configuration period of the N configuration resources, and the shorter period has a higher priority. Among them, the specific value of N is configured by the base station, and may be 8, 2, or 16, for example. For example, the base station is configured with up to N=8 authorized scheduling, and 8 sets of high-level parameters are configured for authorized scheduling. The terminal device sends uplink data on the resources corresponding to the two sets of parameters. When the two sets of resources conflict in time, and When the MAC layer cannot distinguish the priority of the two sets of resources, the terminal device judges the priority according to the configured period, and selects the resource with the higher priority to send uplink data. As shown in FIG. 3, the resource period of the first configuration scheduling is short. When the resources of the two configuration scheduling conflicts, the resources scheduled by the first configuration are sent first, because the period is shorter than the resources scheduled by the second configuration.

Figure 4 shows that the physical layer selects the configuration resource with a short sending duration to send uplink data.

Embodiment 3: When at least two of the N configuration resources have the same period, the order of sending services of the at least two configuration resources determines the priority according to the transmission duration, and the priority of the short data transmission duration is higher. Figure 4 shows that under the same period, the physical layer selects the configured resource with a short transmission duration to transmit uplink data. For example, the base station is configured with up to 8 authorized schedules, and 8 sets of high-level parameters are configured for authorized scheduling. The terminal device sends uplink data on the resources corresponding to the two sets of parameters. When the two sets of resources conflict in time, the MAC layer When the priority of the two sets of resources cannot be distinguished, and the period of configuring the two sets of resources is the same, the terminal device judges the priority according to the configured uplink transmission duration, and selects the resource with the higher priority to send uplink data. As shown in the figure, the resource duration of the second configuration scheduling is short. When the resources of the two configuration scheduling conflicts, the resources scheduled by the second configuration are sent first, because the sending duration is longer than the resource duration of the second configuration scheduling. short.

In this embodiment, the at least one parameter refers to the transmission duration. Of course, the at least one parameter may also be the data start time and MCS level.

Figure 5 shows that the physical layer selects the configuration resource with an early start symbol to send uplink data.

Embodiment 4: When at least 2 of the N configuration resources have the same period and transmission duration, the order of sending services of the at least 2 configuration resources determines the priority according to the data start time, and the one with the earlier start time High priority. Fig. 5 shows that when the period and the transmission duration are the same, the physical layer selects the configuration resource with the start symbol in front to transmit the uplink data. For example, the base station is configured with up to 8 authorized schedules, and 8 sets of high-level parameters are configured for authorized scheduling. The terminal device sends uplink data on the resources corresponding to the two sets of parameters. When the two sets of resources conflict in time, the MAC layer When the priority of the two sets of resources cannot be distinguished, and the period of configuring the two sets of resources is the same, the duration of the uplink transmission for configuring the two sets of resources is also the same. The terminal device determines the priority according to the configured start symbol of the uplink transmission, and selects The resources with the first start symbol send uplink data. As shown in the figure, the resource scheduled by the first configuration sends the start symbol earlier. When the resources scheduled by the two configurations conflict, the resource scheduled by the first configuration is sent first, because the start symbol time is relative to the second configuration. The scheduled resources are high.

In this embodiment, the combination of the at least one parameter refers to a combination of two parameters: transmission duration and data start time. In the combination of the two parameters, in combination with the foregoing embodiment, the priority is first determined by the transmission duration, and then the priority is determined by the data start time.

Figure 6 shows that the physical layer selects a configuration resource with a low MCS level to send uplink data.

Embodiment 5: When at least 2 of the N configuration resources have the same period, transmission duration, and start time, the order of sending services of the at least 2 configuration resources determines the priority according to the MCS level, and the MCS level is low The priority is high. Fig. 6 shows that when the period and the transmission duration are the same, the physical layer selects a configuration resource with a low MCS level to transmit uplink data. For example, the base station is configured with up to 8 authorized schedules, and 8 sets of high-level parameters are configured for authorized scheduling. The terminal device sends uplink data on the resources corresponding to the two sets of parameters. When the two sets of resources conflict in time, the MAC layer When the priority of the two sets of resources cannot be distinguished, and the period of configuring the two sets of resources is the same, the duration of uplink transmission for configuring the two sets of resources is also the same, and the start symbol time is also the same. The terminal device adjusts the demodulation level according to the configured Judge the priority and select the configuration resource with low MCS level to send uplink data. As shown in the figure, the MCS level of the first configuration (MCS=10) is lower than the MCS level of the second configuration (MCS=15). When the resources scheduled by two configurations conflict, the resources scheduled by the first configuration are sent first , Because the MCS level is lower than the resources scheduled by the second configuration.

In this embodiment, the combination of the at least one parameter refers to a combination of three parameters: transmission duration, data start time, and MCS level. In combination with the foregoing embodiments, in the combination of the three parameters, the priority can be determined by the transmission duration first, then by the data start time, and finally by the MCS level.

Embodiment 6: When at least two of the N configuration resources have the same period, transmission duration, start time, and MCS level, the order of sending services of the at least two configuration resources determines the priority according to the configuration identifier . Figure 7: When the cycle, transmission duration, start symbol and MCS level are the same, the physical layer selects and configures an ID with a small priority value to send uplink data. For example, the base station is configured with up to 8 authorized schedules, and 8 sets of high-level parameters are configured for authorized scheduling. The terminal device sends uplink data on the resources corresponding to the two sets of parameters. When the two sets of resources conflict in time, the MAC layer When the priority of the two groups of resources cannot be distinguished, and the period of configuring the two groups of resources is the same, the duration of the uplink transmission for configuring the two groups of resources is also the same, the start symbol time is also the same, the configured MCS level is the same, and the terminal equipment is configured To determine the priority, select a resource with a small priority ID to send uplink data. As shown in the figure, the priority ID of the first configuration scheduling resource is small, indicating that the priority is high. When the resources of the two configuration scheduling conflicts, the first configuration scheduling resource is sent first, because the priority ID is compared with the first configuration scheduling resource. 2. The resource value for configuration scheduling is small.

In this embodiment, the combination of the at least one parameter refers to a combination of three parameters: transmission duration, data start time, and MCS level. In combination with the foregoing embodiments, in the combination of the three parameters, the priority can be determined by the transmission duration first, then by the data start time, and finally by the MCS level. When the three parameters When the combined values of the at least two configuration resources are the same, the order of sending services of the at least two configuration resources determines the priority according to the configuration identification identifier.

In the solution of the present application, considering all the solutions of the foregoing embodiments, the following methods can be best used:

The upper layer configures N independent resources, and the content of the configuration includes N configuration identification (ID), which indicates the transmission priority of the N configuration. When at least two of the N configuration resources conflict in the time domain , The priority selection of the at least two configuration resources is performed in the following order:

First, the MAC layer distinguishes priority. When the MAC layer of the terminal can preferentially process the nth (n=1, 2, ..., N) configuration scheduling resource, the nth configuration scheduling resource is set to be sent with the highest priority;

When the MAC layer cannot distinguish the priority of the at least two configuration resources, the MAC layer generates at least two corresponding PDUs for the at least two configuration resources respectively, and the physical layer distinguishes according to the configuration period of the at least two configuration resources , The priority of short cycle is high;

When the periods are the same, they are distinguished according to the data transmission duration of the at least two configuration resources, and the priority of the short data transmission duration of the configuration resource is higher;

When the period and the transmission duration are the same, they are distinguished according to the data start time of the at least two configuration resources, and the start time of the configuration resource has a higher priority;

When the period, the transmission duration, and the start time are the same, they are distinguished according to the data MCS levels of the two configured resources, and the lower MCS level of the configured resources has a higher priority;

When the period, the transmission duration, the start time, and the MCS level are the same, they are distinguished according to the configuration identification identifiers of the at least two configuration resources. For example, a smaller configuration identification identifier has a higher priority.

Further, when N configuration resources are used, the following schemes can be adopted in this application:

The upper layer configures N independent resources. The content of the configuration includes N configuration identification (ID), which indicates the transmission priority of the N configurations. When the N configuration scheduling resources conflict in the time domain, the N configuration resources Priority selection is carried out in the following order:

When the MAC layer cannot distinguish the priority of N configuration resources, the MAC layer generates N corresponding PDUs from the N configuration resources, and the physical layer distinguishes them according to the configuration period of the N configuration resources. The shorter period has a higher priority;

When the period, transmission duration, and start time are the same, they are distinguished according to the data MCS levels of the N configuration resources, and the lower MCS level of the configuration resources has a higher priority;

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, product or equipment including a series of elements not only includes those elements, but also includes Other elements that are not explicitly listed, or include elements inherent to this process, method, commodity, or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, commodity, or equipment that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation. the way. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A terminal device (which may be a mobile phone, a personal computer, a server, or a network device, etc.) executes the method described in each embodiment of the present invention.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also The protection scope of the present invention should be considered.

Claims

A multi-configuration resource scheduling method, used for service scheduling when N unauthorized resources are configured, is characterized in that it includes the following steps:

The configuration information includes a configuration identification identifier, which indicates the sending priority of N configurations;

When at least two of the N configuration resources conflict:

Use the at least 2 resource allocation cycles to determine the priority,

If the period of the at least two configuration resources is the same, at least one of the transmission duration, the start time, and the MCS level of the at least two configuration resources or a combination of parameters are used to determine the priority;

When the at least one parameter or the combination value of the parameters is the same, the order in which the at least two configuration resources send services is determined according to the priority indicated by the configuration identification identifier.
The method of claim 1, wherein:

When the periods of at least two of the N configuration resources are different, the order of sending services of the two configuration resources is that the shorter period has a higher priority.
The method of claim 1, wherein:

When the periods of at least two of the N configuration resources are the same, the order of sending services of the at least two configuration resources determines the priority according to the transmission duration, and the priority of the short data transmission duration is higher.
The method of claim 1, further comprising the following steps:

When the period and transmission duration of at least two configuration resources among the N configuration resources are the same, the order of sending services of the at least two configuration resources determines the priority according to the data start time, and the priority with the earlier start time is higher.
The method of claim 1, further comprising the following steps:

When the period, transmission duration, and start time of at least 2 configuration resources among the N configuration resources are the same, the order of sending services of the at least 2 configuration resources is determined according to the MCS level, and the priority is higher if the MCS level is lower .
The method of claim 1, further comprising the following steps:

When the period, transmission duration, start time, and MCS level of at least two configuration resources among the N configuration resources are the same, the order of sending services of the at least two configuration resources is determined according to the configuration identification identifier.
The method according to at least one of claims 1 to 6, characterized in that:

First, the MAC layer distinguishes priority;

When the MAC layer cannot distinguish the priority, the N configuration resources are respectively generated into N corresponding PDUs, and then the priority is determined according to the method of at least one of claims 1 to 6.
The method according to claim 1, wherein:

The upper layer configures N independent resources, and the content of the configuration includes N configuration identification identifiers, indicating the transmission priority of the N configurations. When at least two configuration resources of the N configuration resources conflict in the time domain, the at least The priority of the 2 configuration resources is in the following order:

First, the MAC layer distinguishes the priority;

When the MAC layer cannot distinguish the priority of the at least two configuration resources, the MAC layer generates at least two corresponding PDUs for the at least two configuration resources respectively, and the physical layer distinguishes according to the configuration period of the at least two configuration resources, The priority of short cycle is high;

When the periods are the same, they are distinguished according to the data transmission duration of the at least two configuration resources, and the priority of the short data transmission duration of the configuration resource is higher;

When the period and the transmission duration are the same, they are distinguished according to the data start time of the at least two configuration resources, and the start time of the configuration resource has a higher priority;

When the period, the transmission duration, and the start time are the same, they are distinguished according to the data MCS levels of the two configured resources, and the lower MCS level of the configured resources has a higher priority;

When the period, the transmission duration, the start time and the MCS level are the same, they are distinguished according to the configuration identification identifiers of the at least two configuration resources.
The method according to claim 8, wherein:

When the MAC layer cannot distinguish the priority of N configuration resources, the MAC layer generates N corresponding PDUs from the N configuration resources;

The physical layer is distinguished according to N resource allocation cycles, and the shorter cycle has a higher priority;

When the cycle is the same, it is distinguished according to the data transmission duration of N configuration resources, and the priority of the data transmission duration of the configuration resource is short;

When the period and the transmission duration are the same, it is distinguished according to the data start time of the N configuration resources, and the start time of the configuration resource has a higher priority;

When the cycle, transmission duration, and start time are the same, they are distinguished according to the data MCS level of the N configuration resources, and the lower MCS level of the configuration resource has a higher priority;

When the period, transmission duration, start time, and MCS level are the same, they are distinguished according to the configuration identification identifiers of the N configuration resources.