CN110035509B - Mobile communication uplink multi-slot scheduling method and system - Google Patents
Mobile communication uplink multi-slot scheduling method and system Download PDFInfo
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- CN110035509B CN110035509B CN201810029688.4A CN201810029688A CN110035509B CN 110035509 B CN110035509 B CN 110035509B CN 201810029688 A CN201810029688 A CN 201810029688A CN 110035509 B CN110035509 B CN 110035509B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The application discloses a mobile communication uplink multi-time slot scheduling method and a system, wherein the method comprises the following steps: the network equipment sends indication information to the terminal equipment, and the indication information is used for indicating the number of uplink time slots for continuous scheduling; preselecting a time slot set according to the number of the continuously scheduled uplink time slots; removing unavailable time slots from the preselected time slot set, and determining an available time slot set; and the terminal equipment occupies the available time slot set and sends service data to the network equipment. The application also includes a system for implementing uplink multi-slot scheduling. By the method and the system, the multi-time slot continuous resource scheduling and allocation can be completely realized on the basis of the existing new air interface standard, and the scheduling and the transmission of more resources can be realized by using less system overhead.
Description
Technical Field
The present application relates to the field of mobile communications, and in particular, to a method and a system for multi-slot scheduling for uplink information transmission.
Background
5G is the main direction of mobile communication network development, and the specification of a new 5G air interface is also in the process of preparation at present. For future communication systems, scenarios such as large data, low latency, and large connections need to be supported. To support different service features, different techniques and devices are also required at the physical layer to achieve corresponding performance enhancements. Wherein, the frame structure design is the basis of the whole system design. In the frame structure design, the scheduling of time domain resources is the most basic design. The current new air interface (NR) standard specified by 3GPP supports a scheduling scheme based on a single Slot (Slot) and a mini-Slot (mini-Slot) of lesser strength, where a Slot is defined as 14 consecutive symbols in time. In order to save scheduling resources and better support the transmission of large service packets or some services with higher reliability requirements, a new air interface standard will also support a scheduling scheme based on multiple time slots.
Disclosure of Invention
According to the international technical standard, multislot scheduling is semi-statically configured by a higher layer signaling uplink multislot aggregation factor (aggregation-factor-UL), but there is no standardized implementation. In order to solve the problem, the application provides a mobile communication uplink multi-slot scheduling method and a mobile communication uplink multi-slot scheduling system.
The method for scheduling uplink multi-time slots of mobile communication provided by the embodiment of the application comprises the following steps: the network equipment sends indication information to the terminal equipment, and the indication information is used for indicating the number of uplink time slots which are continuously scheduled; preselecting a time slot set according to the number of the continuously scheduled uplink time slots; removing unavailable time slots from the pre-selection time slot set, and determining an available time slot set; and the terminal equipment occupies the available time slot set and sends service data to the network equipment.
Preferably, the indication information includes a first indicator, which is used to indicate the number of uplink timeslots of the continuous scheduling; the number of the continuously scheduled uplink time slots is equal to or less than the value of the uplink multi-time-slot aggregation factor of the high-level signaling.
Further preferably, the indication information is further used to indicate that uplink multislot scheduling is disabled.
Specifically, embodiments of the present application include:
when the first indicator is 1 bit, the first indicator is used for representing 2 states, namely
Forbidding the uplink multi-time slot scheduling, wherein the number of the uplink time slots of the continuous scheduling is equal to the value of the uplink multi-time slot aggregation factor of the high-level signaling;
when the first indicator is 2 bits, the first indicator is used for representing 4 states, respectively
Forbidding uplink multi-time slot scheduling, wherein the number of uplink time slots for continuous scheduling is equal to 2, 3 or 4;
when the first indicator is 3 bits, the first indicator is used for representing 8 states, namely
The number of uplink time slots for which uplink multislot scheduling is disabled, continuous scheduling, is equal to 2, 3, 4, 5, 6, 7 or 8.
In the uplink multi-slot scheduling method for mobile communication provided in the embodiment of the present application, the unavailable slot includes at least one of the following:
part or all of the resources in the time slot are reserved for downlink service data;
part or all of the resources in the time slot are reserved for other terminal equipment or service data;
and part or all of the resources in the time slot are preempted by the signaling with high priority and used for other terminal equipment or service data.
In the method for scheduling uplink multi-slot in mobile communication provided by the embodiment of the present application, the manner in which the terminal device occupies the available slot set and sends service data to the network device includes at least one of the following:
in a first mode, in each time slot in the available time slot set, the terminal equipment sends the same data block;
in a second mode, in each time slot in the available time slot set, the terminal equipment sends different data blocks;
in a third aspect, in each timeslot of the set of available timeslots, the terminal device sends a different portion of a data block.
In order to further effectively implement uplink multi-slot scheduling, the indication information includes a second indicator for indicating the type of the scheme.
Specifically, embodiments of the present application include:
when the length of the second indicator is 1 bit, the second indicator is used for representing 2 states and respectively corresponds to a preset mode, and the preset mode comprises any 2 of a mode one, a mode two and a mode three;
and when the length of the second indicator is 2 bits, the second indicator is used for representing 4 states, which respectively correspond to a mode one state, a mode two state, a mode three state and an invalid state.
The embodiment of the present application further provides a mobile communication uplink information transmission system, which implements the method according to any one of the embodiments of the present application, and the system includes a network device and at least one terminal device.
The network device is used for sending the indication information to the terminal device;
the network equipment is used for preselecting a time slot set according to the number of the continuously scheduled uplink time slots;
the network equipment is used for removing unavailable time slots from the preselected time slot set and determining an available time slot set;
the terminal equipment is used for receiving the indication information;
the terminal device is configured to occupy the available timeslot set and send service data to the network device;
the network device is further configured to receive the service data in the set of available timeslots.
In the system of the embodiment of the present application, preferably, the indication information includes the first indicator and/or the second indicator.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: by the method and the system, multi-time slot continuous resource scheduling and allocation can be completely realized on the basis of the existing new air interface standard, and more resources can be scheduled and transmitted by using less system overhead.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flowchart illustrating an uplink multi-slot scheduling method for mobile communication according to an embodiment of the present invention;
FIG. 2 is a diagram of unavailable slots for resource conflicts;
FIG. 3 is a schematic diagram of an unavailable timeslot being preempted by high priority signaling;
fig. 4 is a schematic diagram of a system for uplink multislot scheduling in mobile communication according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of an embodiment of a mobile communication uplink multi-slot scheduling method according to the present invention. The method for scheduling uplink multi-time slots of mobile communication provided by the embodiment of the application comprises the following steps:
12, preselecting a time slot set according to the number of the continuously scheduled uplink time slots;
and step 14, the terminal device occupies the available time slot set and sends service data to the network device.
The steps 11 to 14 will be specifically described below.
In step 11, preferably, the indication information includes a first indicator, which is used to indicate the number of uplink timeslots of the continuous scheduling; the number of the continuously scheduled uplink time slots is equal to or less than the value of the uplink multi-time-slot aggregation factor of the high-level signaling. For example, the aggregation-factor-UL is defined in 3GPP TS 38.214 v1.3.0 as having a value of 1, 2, 4, or 8.
It should be noted that continuous multi-slot scheduling is possible only in the case of aggregation-factor-UL > 1; when aggregation-factor-UL =1, there is no uplink multislot scheduling.
It should also be noted that even when aggregation-factor-UL >1, multislot scheduling may not be employed. Therefore, it is further preferable that the indication information is also used to indicate that uplink multislot scheduling is disabled.
Embodiments of the first indicator are described in detail below. Adding the indication information into Downlink Control Information (DCI) sent by a network device side, wherein the indication information comprises a first indicator, and the bit length and the content of the first indicator can be configured.
When aggregation-factor-UL =1, the first indicator is 0 bit, i.e., there is no uplink multislot scheduling.
When the aggregation-factor-UL >1,
for example, when the first indicator is 1 bit, it is used to indicate 2 states, which are: forbidding the uplink multi-time slot scheduling, wherein the number of the uplink time slots of the continuous scheduling is equal to the value of the uplink multi-time slot aggregation factor of the high-level signaling;
for example, when the first indicator is 2 bits, the first indicator is used to indicate 4 states, which are respectively: forbidding uplink multi-time slot scheduling, wherein the number of uplink time slots for continuous scheduling is equal to 2, 3 or 4;
for example, when the first indicator is 3 bits, the first indicator is used to indicate 8 states, which are respectively: the number of uplink time slots for which uplink multislot scheduling is disabled, continuous scheduling, is equal to 2, 3, 4, 5, 6, 7 or 8.
In a special case, if the first indicator is not included or is 0 bit, it indicates that the number of uplink timeslots consecutively scheduled is equal to the value of the uplink multislot aggregation factor of the higher layer signaling.
In step 12, after the uplink multi-slot scheduling is adopted in step 11, for example, in the case of aggregation-factor-UL >1, the indication information determines that the terminal device transmits the service data in consecutive aggregation-factor-UL (or less than the aggregation-factor-UL) slots, and it needs to determine which slots are actually used for data transmission. The concrete mode is as follows: a time slot set a is preselected, wherein the elements are time slots for continuous time slot scheduling, and the number in a is aggregation-factor-UL.
In step 13, the uplink multi-slot scheduling method for mobile communication provided in the embodiment of the present application traverses each element in the slot set a, and deletes the element from the set a if the current element meets the unavailability condition. The unavailable time slot includes at least one of:
part or all of the resources in the time slot are reserved for downlink service data;
part or all of the resources in the time slot are reserved for other terminal equipment or service data;
and part or all of the resources in the time slot are preempted by the signaling with high priority and used for other terminal equipment or service data.
Fig. 2 is a diagram of unavailable slots for resource conflicts. The "Slot" in the figure indicates a time Slot. Fig. 2 shows two examples in this case, when aggregation-factor-UL =4, all the time frequency resources in Slot 4 are not uplink resources but downlink resources (fig. 2. A), or part of the time frequency resources in Slot 4 are not uplink resources (fig. 2. B), so that the same time frequency resources as Slot 1 cannot be used for continuous data transmission. At this time, slot 4 does not transmit uplink data as a continuous Slot even if it is one of 4 elements in set a.
In fig. 2.B, the direction of the partial resources is different, resulting in that the partial time slots cannot be used for continuous data transmission. Part of the resources in the current time slot are reserved for other services/terminals. This is typically the case when the system has semi-statically reserved the current slot part resources for some specific terminals or services before multi-slot scheduling.
In the scenario shown in fig. 2, slot 4 is only one example of a Slot in which resources collide. Similarly, if there is a resource conflict in Slot 3, slot 3 is discarded.
Fig. 3 is a schematic diagram of an unavailable timeslot preempted by high priority signaling. The base station (network equipment) calls partial time slots or resources to other terminal equipment or calls to other service data. As shown in fig. 3, when Slot 1 includes DCI 1, it is used to instruct multi-Slot continuous scheduling through Slot N to Slot N + 3; however, slot 2 contains DCI 2 again, which indicates that the terminal device Slot N +1 is used for other terminal devices or other service data of the terminal device, at this time, the scheduling of DCI 2 is obeyed, and Slot N +1 does not participate in data transmission in this multi-Slot scheduling process any more. Although Slot N +1 is used for uplink data in aggregation-factor-UL =4 consecutive slots, the resource of the Slot is preempted by high-priority signaling, and therefore Slot N +1 does not transmit data as a consecutive Slot. In this case, only Slot N, slot N +2, and Slot N +3 perform continuous data transmission.
In the situation shown in fig. 3, slot N +1 is only one example of a Slot that is preempted by high priority signaling. Similarly, if the time frequency resource of the Slot N +3 is preempted by the signaling with high priority, the Slot N +3 is abandoned.
When the number of the continuously scheduled uplink time slots = aggregation-factor-UL, the time slot set a' actually used for data transmission in the aggregation-factor-UL time slots is obtained through step 13.
In step 14, in the method for scheduling uplink multi-slot in mobile communication provided in this embodiment of the present application, the manner in which the terminal device occupies the available slot set and sends service data to the network device includes at least one of the following:
in a first mode, in each time slot in the available time slot set a', the terminal device sends the same data block;
in a second mode, in each time slot in the available time slot set a', the terminal device sends different data blocks;
in a third mode, in each time slot in the available time slot set a', the terminal device transmits different parts of one data block.
In order to further effectively implement uplink multi-slot scheduling, the indication information includes a second indicator for indicating the type of the scheme. For example, an indication symbol is added to DCI to indicate the actual data transmission scheme per slot. When the number of the continuously scheduled uplink time slots = aggregation-factor-UL and all the continuously scheduled uplink-factor-UL time slots are available time slots, the selectable mode is as follows: and the terminal equipment continuously aggregation-factor-UL time slots adopt the information indicated by the current DCI to carry out the same data transmission, or the terminal equipment continuously aggregation-factor-UL time slots adopt the information indicated by the current DCI to carry out different data block transmission, or the terminal equipment continuously aggregation-factor-UL time slots adopt the information indicated by the current DCI to transmit different parts of the same data block (TB).
Specifically, embodiments of the second indicator in the present application include:
when the length of the second indicator is 1 bit, the second indicator is used for representing 2 states and respectively corresponds to a preset mode, and the preset mode comprises any 2 of a mode one, a mode two and a mode three;
and when the length of the second indicator is 2 bits, the second indicator is used for representing 4 states, which respectively correspond to a mode one state, a mode two state, a mode three state and an invalid state.
In a special case, the indicator symbol length is 0 bits. One of three ways is selected by default at this time.
Fig. 4 is a schematic diagram of a system for uplink multi-slot scheduling in mobile communication according to an embodiment of the present invention. The embodiment of the present application further provides a mobile communication uplink information transmission system, which implements the method according to any one of the embodiments of the present application, and the system includes a network device 1 and at least one terminal device 2.
The network device is configured to send the indication information 101 to the terminal device; preselecting a time slot set A according to the number of the continuously scheduled uplink time slots; for removing unavailable time slots from the preselected set of time slots, determining a set of available time slots a'.
The terminal equipment is used for receiving the indication information; and is configured to occupy the available timeslot set and send service data 201 to the terminal device.
The network device is further configured to receive the service data in the set of available timeslots.
In the system of the embodiment of the present application, preferably, the indication information is included in Downlink Control Information (DCI); the indication information includes the first indicator and or the second indicator.
It should be noted that, in all embodiments of the present application, preferably, the indication information further includes an available timeslot set. When the indication information includes a set of available timeslots, the execution order of the steps may be: and 12, 13, 11 and 14.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus comprising the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (9)
1. A mobile communication uplink multi-time slot scheduling method is characterized by comprising the following steps:
the network equipment sends indication information to the terminal equipment, and the indication information is used for indicating the number of uplink time slots for continuous scheduling;
preselecting a time slot set according to the number of the continuously scheduled uplink time slots;
removing unavailable time slots from the preselected time slot set, and determining an available time slot set;
the terminal device occupies the available time slot set and sends service data to the network device;
the number of the continuously scheduled uplink time slots is equal to or less than the value of the uplink multi-time-slot aggregation factor of the high-level signaling; and the value of the uplink multi-slot aggregation factor of the high-layer signaling is greater than 1.
2. The method of claim 1,
the indication information comprises a first indicator used for representing the number of the continuously scheduled uplink time slots.
3. The method of claim 1,
the indication information is also used for indicating that the uplink multi-slot scheduling is forbidden.
4. The method of claim 1,
the unavailable time slot includes at least one of:
part or all of the resources in the time slot are reserved for other terminal equipment or service data;
part or all of the resources in the time slot are reserved for downlink service data;
and part or all of the resources in the time slot are preempted by the signaling with high priority and are used for other terminal equipment or service data.
5. The method as claimed in claim 1, wherein the manner for the terminal device to transmit the traffic data to the network device by occupying the set of available timeslots comprises at least one of:
in a first mode, in each time slot in the available time slot set, the terminal equipment sends the same data block;
in a second mode, in each time slot in the available time slot set, the terminal equipment sends different data blocks;
in a third aspect, in each timeslot of the set of available timeslots, the terminal device sends a different portion of a data block.
6. The method of claim 5,
the indication information includes a second indicator for indicating a type of the mode.
7. The method of claim 6, wherein the step of determining the target position is performed using a computer system
When the length of the second indicator is 1 bit, the second indicator is used for representing 2 states and respectively corresponds to a preset mode, and the preset mode comprises any 2 of a mode one, a mode two and a mode three;
and when the length of the second indicator is 2 bits, the second indicator is used for representing 4 states, which respectively correspond to a mode one state, a mode two state, a mode three state and an invalid state.
8. The method of claim 2, wherein the step of determining the target is performed in a batch process
When the first indicator is 1 bit, it is used to indicate 2 states, which are:
forbidding the uplink multi-time slot scheduling, wherein the number of the uplink time slots of the continuous scheduling is equal to the value of the uplink multi-time slot aggregation factor of the high-level signaling;
when the first indicator is 2 bits, it is used to indicate 4 states, which are:
forbidding uplink multi-time slot scheduling, wherein the number of uplink time slots for continuous scheduling is equal to 2, 3 or 4;
when the first indicator is 3 bits, it is used to indicate 8 states, which are:
the number of uplink time slots for which uplink multislot scheduling is disabled, continuous scheduling, is equal to 2, 3, 4, 5, 6, 7 or 8.
9. A mobile communication uplink information transmission system for the method according to any one of claims 1 to 8, comprising a network device and at least one terminal device;
the network device is used for sending the indication information to the terminal device;
the network equipment is used for preselecting a time slot set according to the number of the continuously scheduled uplink time slots;
the network equipment is used for removing unavailable time slots from the preselected time slot set and determining an available time slot set;
the terminal device is used for receiving the indication information;
the terminal device is configured to occupy the available timeslot set and send service data to the network device;
the network device is configured to receive the service data in the available timeslot set.
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