CN106385709B

CN106385709B - Resource scheduling method and resource scheduling device

Info

Publication number: CN106385709B
Application number: CN201610977460.9A
Authority: CN
Inventors: 李明菊; 朱亚军; 张云飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2016-10-31
Filing date: 2016-10-31
Publication date: 2022-12-20
Anticipated expiration: 2036-10-31
Also published as: CN106385709A; WO2018076566A1

Abstract

The invention provides a resource scheduling method and a resource scheduling device, wherein the resource scheduling method comprises the following steps: informing a terminal of a subcarrier interval used during communication, the number of symbols contained in each time slot and the length of each symbol; when the communication resource needs to be allocated to the terminal, indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal so as to indicate the communication resource allocated to the terminal. The technical scheme of the invention can effectively reduce the signaling overhead during resource allocation under the condition that a plurality of terminals use different subcarrier intervals, and can ensure that users can accurately know the self allocated time resources, thereby improving the system throughput.

Description

Resource scheduling method and resource scheduling device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a resource scheduling method and a resource scheduling apparatus.

Background

Existing 4G and 4.5G mobile communication technologies are based on LTE (Long Term Evolution) and LTE-a (LTE-Advanced) radio access technologies, time-frequency resource granularity, frame structures, and the like. For example, the maximum single Carrier bandwidth that can be supported by the current LTE system is 20MHz, and if a larger bandwidth is to be supported, only Carrier Aggregation (CA) can be used. In addition, the current frame structure mainly includes: FDD (Frequency Division duplex) frame structure, TDD (Time Division duplex) frame structure, and dynamic frame structure used by an LAA (LTE Assisted Access) unlicensed carrier. No matter which frame structure, the method comprises 10 subframes, each subframe is 1ms, each subframe comprises two slots (one slot is 0.5 ms), and each slot comprises 7 symbols. In the frequency domain, in the LTE system, the subcarrier spacing is mainly 15KHz, and one RB (Resource Block) includes 12 subcarriers. A new 3.75KHz sub-carrier spacing is proposed in NB-IoT (Narrow Band Internet of Things based on cellular), and the carrier bandwidth of NB-IoT is only 180KHz.

In terms of resource allocation, both the FDD frame structure and the TDD frame structure use a subframe of 1ms as a Time-domain scheduling granularity, and the Time-domain scheduling granularity is less than 1ms except when DwPTS (Downlink Pilot Time Slot) in a special subframe in the TDD frame structure is used for transmitting data. Similarly, in the frame structure used by the LAA unlicensed carrier, the downlink scheduling time domain granularity which multiplexes DwPTS as a partial subframe also appears, and meanwhile, the scheduling granularity of the 1ms whole subframe is also used. In the FDD frame structure and the TDD frame structure, except for the special subframe in the TDD frame structure, which has both downlink transmission time and uplink transmission time, other subframes are uplink transmission or downlink transmission, or are separated in time domain or frequency domain.

It can be seen that, the current frame structure and the granularity of frequency domain resources both make the resource allocation inflexible, and the time intervals of the uplink scheduling mechanism and the HARQ (Hybrid Automatic Repeat Request) feedback mechanism, etc. make the time delay larger, and the 20MHz bandwidth also does not meet the requirement of high bandwidth.

The main scenes of the future 5G communication include the following three scenes: eMBBs (enhanced Mobile Broadband networks), mMTC (massive Machine Type Communication), and URLLC (Ultra-Reliable and Low Latency Communications). The three scenarios are different in the type of service and the requirements. Such as: two main indexes of the eMBB service are high bandwidth and low time delay, the eMBB service can support large bandwidth of 100MHz in future high-frequency communication, the whole bandwidth is probably directly distributed to one user at a certain moment for use, and uplink scheduling time delay and HARQ feedback time delay can bring time delay influence; the mMTC service needs a narrow-band service, and needs a long battery life, so that the service needs a frequency domain with smaller granularity and a time domain resource with wider granularity; for the URLLC service, it is also necessary to reduce the delay impact caused by the uplink scheduling delay and the HARQ feedback delay.

That is, due to the diversification of services, a larger uplink scheduling delay and a longer HARQ feedback delay are caused by a current fixed frame structure, a fixed frequency domain resource granularity and a time domain resource granularity, and a smaller carrier bandwidth cannot meet the diversified requirements of the services.

Currently, the following consensus has been reached for discussion conferences of 5G: the subframe length is defined as 1ms, the reference subcarrier interval is 15KHz, and the subframe length is used when the user terminal performs basic downlink subframe synchronization. And for a scheduling unit slot, when the subcarrier spacing is less than 60KHz, the slot is 7 or 14 symbols (Symbol) long; the slot is 14 symbols long when the subcarrier spacing is greater than 60 KHz. And may support data transmission aggregated over multiple slots.

Meanwhile, in future 5G communication, different users may use different subcarrier intervals, so when a plurality of users use different subcarrier intervals, how to ensure signaling minimization during resource allocation and ensure that users can accurately know allocated resources is an urgent technical problem to be solved.

Disclosure of Invention

Based on at least one of the above technical problems, the present invention provides a new resource scheduling scheme, so that when multiple terminals use different subcarrier intervals, signaling overhead during resource allocation can be effectively reduced, and users can be ensured to accurately know their own allocated time resources, thereby improving system throughput.

In view of this, according to a first aspect of the present invention, a resource scheduling method is provided, including: informing a terminal of subcarrier intervals used in communication, the number of symbols contained in each time slot and the length of each symbol; when communication resources need to be allocated to the terminal, indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal so as to indicate the communication resources allocated to the terminal.

In the technical scheme, when communication resources need to be allocated to the terminal, the position of the first time slot in the aggregated multiple time slots and the number of the aggregated multiple time slots are indicated to the terminal, so that the terminal can determine the communication resources allocated to the terminal by the base station according to the used subcarrier interval, the number of symbols contained in each time slot and the length of each symbol. Therefore, the technical scheme of the invention adopts a scheduling mode of aggregating a plurality of time slots to allocate communication resources to the terminal, and only needs to indicate the position of the first time slot in the aggregated plurality of time slots and the number of the aggregated plurality of time slots when the allocated communication resources are indicated to the terminal.

In the above technical solution, preferably, the resource scheduling method further includes: determining the maximum number of polymerizable time slots that the terminal can support; notifying the terminal of the determined maximum number of polymerisable time slots.

In the technical scheme, the determined maximum number of the polymerizable time slots which can be supported by the terminal is notified to the terminal, so that the terminal can determine the bit number of a DCI (Downlink Control Information) signaling when the base station indicates the number of the scheduled time slots subsequently, and can correctly decode the DCI signaling to acquire the scheduling Information of the base station. The terminal can be stored in a chip of the terminal after knowing the maximum polymerizable time slot number; in addition, if the maximum number of polymerizable slots that the terminal can support is determined in advance, it may be pre-stored in a chip of the terminal before the base station communicates with the terminal.

Further, the step of determining the maximum number of the aggregatable timeslots the terminal can support specifically includes: determining the number of time slots contained in one subframe according to the time length of one subframe and the length of each symbol; and taking the total number of time slots contained in the integral number of subframes or the total number of time slots contained in the non-integral number of subframes as the maximum polymerizable time slot number.

Wherein, in the case that the maximum number of the aggregatable time slots is the total number of the time slots contained in one subframe, the time slots capable of aggregation comprise time slots in a single subframe or time slots between adjacent subframes. Namely, the technical scheme of the invention supports time slot aggregation in the sub-frame and time slot aggregation between the sub-frames.

In one embodiment of the invention, the maximum number of aggregatable slots at different subcarrier spacings is the same or different; and/or

The time length corresponding to the maximum polymerizable time slot number in different subcarrier intervals is the same or different.

In any of the above technical solutions, preferably, the step of notifying the determined maximum number of the polymerizable timeslots to the terminal specifically includes: and notifying the maximum polymerizable time slot number to the terminal in a semi-static manner through RRC (Radio Resource Control) signaling.

In any of the above technical solutions, preferably, the maximum number of the polymerizable time slots determined for uplink scheduling is the same as or different from the maximum number of the polymerizable time slots determined for downlink scheduling.

In any of the above technical solutions, preferably, the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots are indicated to the terminal through a DCI signaling, where a format of the DCI signaling is different from a format of a DCI signaling sent when the terminal is scheduled by a single time slot.

In any of the above technical solutions, preferably, the coding and modulation modes used when transmitting data in the multiple time slots are the same; and/or

When indicating the HARQ process numbers corresponding to the multiple time slots, only indicating the HARQ process number corresponding to one time slot in the multiple time slots; and/or

And respectively transmitting new data indication information and/or redundancy version information for each of the plurality of time slots.

In an embodiment of the present invention, the resource scheduling method further includes:

if the partial resources in the frequency domain resources corresponding to the assigned time slots which are already assigned to the terminal need to be assigned to other terminals, after or at the same time of indicating the position of the first time slot in the plurality of time slots and the number of the plurality of time slots to the terminal, indicating the frequency domain resources corresponding to the assigned time slots and the partial resources assigned to the other terminals to the terminal, and/or indicating the frequency domain resources corresponding to the assigned time slots and the partial resources assigned to the other terminals to the terminal

If it is determined that a part of the frequency domain resources corresponding to the designated time slot allocated to the terminal needs to be allocated to other terminals in any time slot of the plurality of time slots, indicating the frequency domain resources corresponding to the designated time slot and the part of the frequency domain resources allocated to other terminals for use in the frequency domain resources to the terminal in any time slot,

wherein the designated time slot is one or more of the plurality of time slots.

In this embodiment, since the subcarrier intervals used by different terminals may be different, the base station may allocate part of the frequency domain resources already allocated to a certain terminal to other terminals for use based on the consideration of maximum resource utilization, for example, allocate part of the frequency domain resources allocated to a terminal using a larger subcarrier interval to other terminals using a smaller subcarrier interval, so that by the indication manner in this embodiment (indicating may be performed when indicating aggregated multiple time slots, or indicating may be performed in one of the aggregated multiple time slots), it may be ensured that the terminal accurately knows its allocated communication resources, so that the terminal may receive or transmit data through the allocated communication resources.

According to the second aspect of the present invention, a resource scheduling method is further provided, including: receiving a subcarrier interval used by a terminal notified by a base station during communication, the number of symbols contained in each time slot and the length of each symbol; receiving scheduling information sent by the base station; if the scheduling information indicates the position of a first time slot in the aggregated multiple time slots and the number of the multiple time slots, determining the communication resources allocated by the base station according to the position of the first time slot, the number of the multiple time slots, the number of symbols contained in each time slot and the length of each symbol; and performing communication based on the communication resources allocated by the base station.

In the technical scheme, when the scheduling information sent by the base station indicates the position of the first time slot in the aggregated multiple time slots and the number of the aggregated multiple time slots, it indicates that the base station allocates the communication resource to the terminal by the scheduling mode of aggregation of the multiple time slots, and when the allocated communication resource is indicated to the terminal, only the position of the first time slot in the aggregated multiple time slots and the number of the aggregated multiple time slots need to be indicated.

Further, the resource scheduling method further includes: while or after the scheduling information is received, if frequency domain resources corresponding to a specified time slot allocated to the terminal and partial resources allocated to other terminals and indicated by the base station are received, determining frequency domain resources which are not used by other terminals in the frequency domain resources corresponding to the specified time slot, wherein the specified time slot is one or more time slots in the plurality of time slots; and in the appointed time slot, performing communication based on the frequency domain resources which are not used by other terminals in the frequency domain resources corresponding to the appointed time slot.

Specifically, since the subcarrier intervals used by different terminals may be different, the base station may allocate part of the frequency domain resources already allocated to a terminal to other terminals for use based on the consideration of maximum resource utilization, for example, allocate part of the frequency domain resources allocated to terminals using larger subcarrier intervals to other terminals using smaller subcarrier intervals, so that when the terminals receive the frequency domain resources corresponding to the specified time slot allocated to the terminal and the part of the resources allocated to other terminals indicated by the base station (the part of the information indicated by the base station may be indicated in multiple time slots indicating aggregation or may be indicated in one of the multiple time slots of aggregation), the terminals need to acquire the frequency domain resources that can be used by themselves according to the part of the information indicated by the base station, so as to ensure that data is received or transmitted through the frequency domain resources that can be used by themselves in the specified time slots.

According to the third aspect of the present invention, there is further provided a resource scheduling apparatus, including: a first notifying unit, configured to notify a subcarrier interval used by a terminal in communication, the number of symbols included in each slot, and a length of each symbol; and the indicating unit is used for indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal when the communication resources are required to be allocated to the terminal, so as to indicate the communication resources allocated to the terminal.

In the foregoing technical solution, preferably, the resource scheduling apparatus further includes: a determining unit, configured to determine a maximum number of polymerizable timeslots that can be supported by the terminal; a second notifying unit, configured to notify the terminal of the maximum number of the polymerizable time slots determined by the determining unit.

In the technical scheme, the number of the maximum polymerizable time slots which can be supported by the determined terminal is notified to the terminal, so that the terminal can determine the bit number of the DCI signaling of the base station when the number of the scheduled time slots is indicated subsequently, and further can correctly decode the DCI signaling to acquire the scheduling information of the base station. The terminal can be stored in a chip of the terminal after knowing the maximum polymerizable time slot number; in addition, if the maximum number of aggregatable timeslots that the terminal can support is determined in advance, it may be pre-stored in the chip of the terminal before the base station communicates with the terminal.

Further, the determining unit is specifically configured to: determining the number of time slots contained in one subframe according to the time length of one subframe and the length of each symbol; and taking the total number of time slots contained in the integral number of subframes or the total number of time slots contained in the non-integral number of subframes as the maximum polymerizable time slot number.

Wherein, in the case that the maximum number of the polymerizable slots is the total number of slots included in one subframe, the slots capable of being polymerized include slots within a single subframe or slots between adjacent subframes. Namely, the technical scheme of the invention supports time slot aggregation in the sub-frame and time slot aggregation between the sub-frames.

The maximum number of the polymerizable time slots in different subcarrier intervals corresponds to the same or different time length.

In any of the above technical solutions, preferably, the second notification unit is specifically configured to: the maximum number of polymerisable time slots is communicated to the terminal semi-statically by RRC signalling.

In any one of the above technical solutions, preferably, the indicating unit is specifically configured to: and indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal through DCI signaling, wherein the format of the DCI signaling is different from the format of the DCI signaling sent when the terminal is subjected to single time slot scheduling.

When indicating the HARQ process numbers corresponding to the plurality of time slots, only indicating the HARQ process number corresponding to one time slot in the plurality of time slots; and/or

In an embodiment of the invention, the indication unit is further configured to:

wherein the designated time slot is one or more of the plurality of time slots.

According to the fourth aspect of the present invention, there is also provided a resource scheduling apparatus, including: a first receiving unit, configured to receive a subcarrier interval used by a terminal for communication, the number of symbols included in each slot, and a length of each symbol, which are notified by a base station; a second receiving unit, configured to receive scheduling information sent by the base station; a determining unit, configured to determine, when the scheduling information indicates a position of a first time slot in the aggregated multiple time slots and the number of the multiple time slots, a communication resource allocated by the base station according to the position of the first time slot, the number of the multiple time slots, the number of symbols included in each time slot, and a length of each symbol; a communication unit, configured to perform communication based on the communication resource allocated by the base station.

In the technical scheme, when the scheduling information sent by the base station indicates the position of the first time slot in the aggregated multiple time slots and the number of the aggregated multiple time slots, it indicates that the base station allocates the communication resource to the terminal by the scheduling mode of aggregation of multiple time slots, and when the allocated communication resource is indicated to the terminal, only the position of the first time slot in the aggregated multiple time slots and the number of the aggregated multiple time slots need to be indicated.

Further, the determining unit is configured to, at the same time as or after the second receiving unit receives the scheduling information, if the frequency domain resource corresponding to the specified time slot allocated to the terminal and the partial resource allocated to other terminals and indicated by the base station are received, determine a frequency domain resource that is not used by the other terminals in the frequency domain resource corresponding to the specified time slot, where the specified time slot is one or more time slots in the multiple time slots; the communication unit is specifically configured to, in the specified time slot, perform communication based on a frequency domain resource that is not used by the other terminal in the frequency domain resource corresponding to the specified time slot.

By the technical scheme, under the condition that a plurality of terminals use different subcarrier intervals, signaling overhead during resource allocation can be effectively reduced, users can be ensured to accurately know self allocated time resources, and system throughput is improved.

Drawings

Fig. 1 shows a schematic flow chart of a resource scheduling method according to a first embodiment of the invention;

fig. 2 shows a schematic structural diagram of a resource scheduling apparatus according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a resource scheduling apparatus according to a second embodiment of the present invention;

FIG. 4 is a flowchart illustrating a resource scheduling method according to a second embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a resource scheduling apparatus according to a third embodiment of the present invention;

fig. 6 shows a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 7 shows a schematic block diagram of a terminal according to an embodiment of the invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Fig. 1 is a flowchart illustrating a resource scheduling method according to a first embodiment of the present invention, which is applicable to a base station.

As shown in fig. 1, a resource scheduling method according to a first embodiment of the present invention includes:

step S10 is to notify the terminal of the subcarrier interval used for communication, the number of symbols included in each slot, and the length of each symbol.

And step S12, when the communication resource needs to be allocated to the terminal, indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal so as to indicate the communication resource allocated to the terminal.

Preferably, the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots may be indicated to the terminal through DCI signaling, where a format of the DCI signaling is different from a format of the DCI signaling sent when the terminal is scheduled by a single time slot.

In the technical scheme shown in fig. 1, when communication resources need to be allocated to a terminal, the terminal is enabled to determine the communication resources allocated to the terminal by the base station according to the used subcarrier spacing, the number of symbols included in each slot and the length of each symbol by indicating the position of the first slot in the aggregated multiple slots and the number of the aggregated multiple slots to the terminal. Therefore, the technical scheme of the invention adopts a scheduling mode of aggregating a plurality of time slots to allocate communication resources to the terminal, and only needs to indicate the position of the first time slot in the aggregated plurality of time slots and the number of the aggregated plurality of time slots when the allocated communication resources are indicated to the terminal.

In the above technical solution, preferably, the resource scheduling method further includes: determining the maximum number of polymerizable time slots that the terminal can support; notifying the terminal of the determined maximum number of polymerizable slots. Preferably, the determined maximum number of aggregatable slots may be informed to the terminal semi-statically through RRC signaling.

Wherein, in the case that the maximum number of the aggregatable time slots is the total number of the time slots contained in one subframe, the time slots capable of aggregation comprise time slots in a single subframe or time slots between adjacent subframes. Namely, the technical scheme of the invention supports time slot aggregation in subframes and time slot aggregation among subframes.

In one embodiment of the invention, the maximum number of polymerisable time slots at different subcarrier intervals is the same or different; and/or

if the partial resources in the frequency domain resources corresponding to the specified time slot allocated to the terminal need to be allocated to other terminals, after or at the same time of indicating the position of the first time slot in the plurality of time slots and the number of the plurality of time slots to the terminal, indicating the frequency domain resources corresponding to the specified time slot and the partial resources allocated to the other terminals to be used in the frequency domain resources and/or the frequency domain resources and the partial resources allocated to the other terminals to be used in the frequency domain resources to the terminal

wherein the designated time slot is one or more of the plurality of time slots.

In this embodiment, since the subcarrier intervals used by different terminals may be different, the base station may allocate, based on consideration of resource maximum utilization, part of the frequency domain resources already allocated to a terminal to be used by other terminals, for example, allocate part of the frequency domain resources allocated to a terminal using a larger subcarrier interval to other terminals using a smaller subcarrier interval, so that by the way of indicating in this embodiment (indicating may be performed when indicating aggregated multiple time slots, or indicating may be performed in one of the aggregated multiple time slots), it may be ensured that the terminal knows its allocated communication resources accurately, so that the terminal may receive or transmit data through the allocated communication resources.

Fig. 2 shows a schematic structural diagram of a resource scheduling apparatus according to a first embodiment of the present invention.

As shown in fig. 2, a resource scheduling apparatus 200 according to a first embodiment of the present invention includes: a first notification unit 202 and an indication unit 204.

The first notification unit 202 is configured to notify a terminal of a subcarrier interval used in communication, the number of symbols included in each slot, and a length of each symbol; the indicating unit 204 is configured to indicate, to a terminal, a position of a first timeslot in the aggregated multiple timeslots and the number of the multiple timeslots when a communication resource needs to be allocated to the terminal, so as to indicate, to the terminal, the communication resource allocated to the terminal.

In the technical scheme, when communication resources need to be allocated to the terminal, the position of the first time slot in the aggregated multiple time slots and the number of the aggregated multiple time slots are indicated to the terminal, so that the terminal can determine the communication resources allocated to the terminal by the base station according to the used subcarrier interval, the number of symbols contained in each time slot and the length of each symbol. Therefore, the technical scheme of the invention adopts a scheduling mode of aggregation of a plurality of time slots to allocate communication resources to the terminal, and when the allocated communication resources are indicated to the terminal, only the position of the first time slot in the aggregated plurality of time slots and the number of the aggregated plurality of time slots need to be indicated.

Further, as shown in fig. 3, the resource scheduling apparatus 300 according to the second embodiment of the present invention, on the basis of having the first notification unit 202 and the indication unit 204 as shown in fig. 2, further includes: a determination unit 302 and a second notification unit 304.

Wherein the determining unit 302 is configured to determine a maximum number of polymerizable timeslots that can be supported by the terminal; the second notifying unit 304 is configured to notify the terminal of the maximum polymerizable number of timeslots determined by the determining unit 302.

In the technical scheme, the determined maximum polymerizable time slot number which can be supported by the terminal is notified to the terminal, so that the terminal can determine the bit number of the DCI signaling when the base station indicates the scheduled time slot number subsequently, and further can correctly decode the DCI signaling to acquire the scheduling information of the base station. The terminal can be stored in a chip of the terminal after knowing the maximum polymerizable time slot number; in addition, if the maximum number of aggregatable timeslots that the terminal can support is determined in advance, it may be pre-stored in the chip of the terminal before the base station communicates with the terminal.

Further, the determining unit 302 is specifically configured to: determining the number of time slots contained in one subframe according to the time length of one subframe and the length of each symbol; and taking the total number of time slots contained in the integral number of subframes or the total number of time slots contained in the non-integral number of subframes as the maximum polymerizable time slot number.

In any one of the above technical solutions, preferably, the second notification unit 304 is specifically configured to: the maximum number of polymerisable time slots is communicated to the terminal semi-statically by RRC signalling.

In any of the above technical solutions, preferably, the indicating unit 204 is specifically configured to: and indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal through DCI signaling, wherein the format of the DCI signaling is different from the format of the DCI signaling sent when the terminal is subjected to single time slot scheduling.

In an embodiment of the present invention, the indication unit 204 is further configured to:

If it is determined that a part of the frequency domain resources corresponding to the assigned time slot allocated to the terminal needs to be allocated to other terminals in any time slot of the plurality of time slots, indicating the frequency domain resources corresponding to the assigned time slot and the part of the frequency domain resources allocated to other terminals for use in the any time slot to the terminal,

wherein the designated time slot is one or more of the plurality of time slots.

The invention also provides a base station, comprising: such as the resource scheduling apparatus 200 shown in fig. 2, or the resource scheduling apparatus 300 shown in fig. 3.

Fig. 4 shows a flowchart of a resource scheduling method according to a second embodiment of the present invention, and the resource scheduling method is applied to a terminal.

As shown in fig. 4, a resource scheduling method according to a second embodiment of the present invention includes:

step S40 is to receive the subcarrier interval used by the terminal in communication notified by the base station, the number of symbols included in each slot, and the length of each symbol.

And step S42, receiving the scheduling information sent by the base station.

Step S44, if the scheduling information indicates the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots, determining the communication resource allocated by the base station according to the position of the first time slot, the number of the multiple time slots, the number of symbols included in each time slot, and the length of each symbol.

And step S46, communication is carried out based on the communication resources distributed by the base station.

Further, the resource scheduling method further includes: while or after the scheduling information is received, if frequency domain resources corresponding to a specified time slot allocated to the terminal and part of resources allocated to other terminals are received, wherein the frequency domain resources are indicated by the base station and are not used by other terminals, determining the frequency domain resources which are not used by other terminals in the frequency domain resources corresponding to the specified time slot, wherein the specified time slot is one or more time slots in the plurality of time slots; and in the appointed time slot, performing communication based on the frequency domain resources which are not used by other terminals in the frequency domain resources corresponding to the appointed time slot.

Specifically, since the subcarrier spacing used by different terminals may be different, the base station may allocate part of the frequency domain resources already allocated to a terminal to other terminals for use based on the consideration of resource maximum utilization, for example, allocate part of the frequency domain resources allocated to terminals using larger subcarrier spacing to other terminals using smaller subcarrier spacing, so that when the terminal receives the frequency domain resources corresponding to the designated time slot allocated to the terminal and the part of the resources allocated to other terminals for use by the base station, the terminal needs to acquire the frequency domain resources that can be used by itself according to the frequency domain resources, so as to ensure that data is received or transmitted through the frequency domain resources that can be used by itself in the designated time slot.

Fig. 5 shows a schematic structural diagram of a resource scheduling apparatus according to a third embodiment of the present invention.

As shown in fig. 5, a resource scheduling apparatus 500 according to a third embodiment of the present invention includes: a first receiving unit 502, a second receiving unit 504, a determining unit 506 and a communication unit 508.

The first receiving unit 502 is configured to receive a subcarrier interval used by the terminal for performing communication, the number of symbols included in each slot, and a length of each symbol, which are notified by the base station; the second receiving unit 504 is configured to receive scheduling information sent by the base station; the determining unit 506 is configured to determine, when the scheduling information indicates the position of a first time slot in the aggregated multiple time slots and the number of the multiple time slots, a communication resource allocated by the base station according to the position of the first time slot, the number of the multiple time slots, the number of symbols included in each time slot, and the length of each symbol; the communication unit 508 is configured to perform communication based on the communication resources allocated by the base station.

Further, the determining unit 506 is further configured to, while or after the second receiving unit 504 receives the scheduling information, if the frequency domain resource corresponding to the specified time slot allocated to the terminal and the partial resource allocated to other terminals and indicated by the base station are received, determine a frequency domain resource that is not used by the other terminals in the frequency domain resource corresponding to the specified time slot, where the specified time slot is one or more time slots in the multiple time slots; the communication unit 508 is specifically configured to, in the specified timeslot, perform communication based on frequency domain resources that are not used by the other terminals in the frequency domain resources corresponding to the specified timeslot.

Specifically, since the subcarrier intervals used by different terminals may be different, the base station may allocate part of the frequency domain resources already allocated to a terminal to other terminals for use based on the consideration of maximum resource utilization, for example, allocate part of the frequency domain resources allocated to terminals using a larger subcarrier interval to other terminals using a smaller subcarrier interval, so that when the terminal receives the frequency domain resources corresponding to the designated time slot allocated to the terminal and the part of the resources allocated to other terminals for use by the base station, the terminal needs to acquire the frequency domain resources that can be used by itself according to the frequency domain resources, so as to ensure that data is received or transmitted through the frequency domain resources that can be used by itself in the designated time slot.

The invention also provides a terminal, comprising: such as the resource scheduling apparatus 500 shown in fig. 5.

In summary, the technical solution of the present invention is mainly directed to a signaling design problem of aggregation scheduling of multiple timeslots in 5G NR (New Radio, new Radio technology), and specifically includes the following aspects:

1. the base station needs to inform the user through RRC signaling what the subcarrier interval used for scheduling is, each slot includes several symbols, and how long each symbol is. Furthermore, the user can determine the time length of each slot according to the number of symbols contained in each slot and the length of each symbol, and then can determine the number value of the slots contained in one subframe, namely 1 ms.

Specific examples are listed below:

1. for example, if the subcarrier spacing is 15KHz, a subframe contains 14 symbols within 1ms, and if a slot is 7 or 14 symbols, a subframe contains 2 or 1 slot.

2. For example, if the subcarrier spacing is 30KHz, a subframe contains 28 symbols within 1ms, and if a slot is 7 or 14 symbols, a subframe contains 4 or 2 slots.

3. For example, if the subcarrier spacing is 60KHz, a subframe contains 56 symbols within 1ms, and if a slot is 7 or 14 symbols, a subframe contains 8 or 4 slots.

4. For example, if the subcarrier spacing is 120KHz, a subframe includes 112 symbols within 1ms, and if a slot is 14 symbols, a subframe includes 8 slots.

2. The base station needs to identify the maximum number of slots that can be aggregated that the terminal can support.

1. If aggregation of slots within 1ms of one subframe is only supported, then the maximum number of slots that can be aggregated may be the number of slots contained within one subframe. Of course, if the maximum number of slots to be aggregated is the number of slots contained within a subframe, then it may also be a slot aggregation between subframes.

2. If aggregation of slots beyond 1ms can be supported, it can be either aggregation of slots within a subframe or aggregation of slots between subframes. In this case, the maximum number of slots that can be supported in the aggregate may be the number of slots contained in an integer number of subframes or may be the number of slots in a non-integer number of subframes.

3. The maximum polymerizable slot numbers corresponding to different subcarrier intervals may be the same or different, and the durations of the maximum polymerizable slot numbers corresponding to different subcarrier intervals may be the same or different.

3. After determining the maximum polymerizable slot number which can be supported by the terminal, the base station notifies the user through an RRC (radio resource control) signaling, so that the user can determine the bit number of the DCI signaling used by the base station when the polymerized slot number is subsequently indicated according to the maximum polymerizable slot number, and the terminal can be ensured to correctly analyze the DCI signaling sent by the base station.

For example, if the maximum number of slots that can be aggregated is 4, then 2 bits may indicate that 1, 2, 3, or 4 slots are supported;

for example, if the maximum number of polymerisable slots is 8, then 3 bits may indicate support of 1, 2, 3 of 8230, or 8;

……

it should be noted here that the format of DCI signaling supporting 1 slot scheduling and the format of DCI signaling supporting more than 1 slot (i.e., aggregation slot) scheduling may be different, and the two formats are independently activated or deactivated using RRC signaling.

4. When the polymerizable slots supported by the terminal are a plurality of continuous slots, the base station indicates to the user that the DCI signaling used by the resource allocated to the user only needs to indicate the position of the first scheduled slot and the number of the aggregated slots, and then the user can determine the communication resource allocated to the user by the base station according to the used subcarrier interval, the number of symbols contained in each slot and the length of each symbol.

5. The MCS (Modulation and Coding Scheme, modulation and Coding strategy) adopted when transmitting data in the aggregated slots is the same; only one of the HARQ IDs in the aggregated slots needs to be indicated, and the others are obtained according to a predefined rule (there is one HARQ in each slot, so after one of the HARQ IDs is indicated, the HARQ IDs in the other slots can be known accordingly); the aggregated slots need to send new data indications respectively, and the new data indication sent by each slot occupies 1bit; RV (Redundancy Version) corresponding to a plurality of slots of the aggregation are respectively indicated.

6. The maximum number of slots supported by the upstream and downstream channels may be the same or different.

Fig. 6 shows a schematic structural diagram of a base station according to an embodiment of the present invention.

As shown in fig. 6, the base station according to the embodiment of the present invention includes: a processor 1, an output device 3 and a memory 5. In some embodiments of the invention, the processor 1, the output device 3 and the memory 5 may be connected by a bus 4 or other means, as exemplified by the connection by the bus 4 in fig. 6.

Wherein the memory 5 is used for storing a set of program codes, and the processor 1 calls the program codes stored in the memory 5 to execute the following operations:

informing the terminal of the subcarrier interval used in communication, the number of symbols included in each slot and the length of each symbol through the output device 3;

when communication resources need to be allocated to the terminal, the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots are indicated to the terminal through the output device 3, so as to indicate the communication resources allocated to the terminal.

As an alternative embodiment, the processor 1 calls the program code stored in the memory 5 and is further configured to perform the following operations:

determining the maximum number of polymerizable time slots that the terminal can support;

the determined maximum number of polymerisable time slots is communicated to the terminal by output means 3.

As an alternative implementation, the processor 1 calls the program code stored in the memory 5, in particular to perform the following operations:

determining the number of time slots contained in one subframe according to the time length of one subframe and the length of each symbol;

and taking the total number of time slots contained in the integral number of subframes or the total number of time slots contained in the non-integral number of subframes as the maximum polymerizable time slot number.

As an alternative embodiment, the processor 1 calls the program code stored in the memory 5, in particular to perform the following operations:

the step of notifying the determined maximum number of the polymerizable timeslots to the terminal through the output device 3 specifically includes:

the maximum number of polymerisable time slots is communicated to the terminal semi-statically by RRC signalling.

and indicating the position of the first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal through DCI signaling, wherein the format of the DCI signaling is different from the format of the DCI signaling sent when the terminal is subjected to single time slot scheduling.

if it is necessary to allocate part of the frequency domain resources corresponding to the designated time slot allocated to the terminal to other terminals, after or at the same time of indicating the position of the first time slot of the plurality of time slots and the number of the plurality of time slots to the terminal through the output device 3, indicating the frequency domain resources corresponding to the designated time slot and the part of the resources allocated to the other terminals to the terminal through the output device 3, and/or

If it is determined that a part of the frequency domain resources corresponding to the assigned time slot allocated to the terminal needs to be allocated to other terminals in any time slot of the plurality of time slots, the frequency domain resources corresponding to the assigned time slot and the part of the frequency domain resources allocated to other terminals are indicated to the terminal in the any time slot through the output device 3,

wherein the designated time slot is one or more of the plurality of time slots.

As shown in fig. 7, a terminal according to an embodiment of the present invention includes: a processor 1', an input device 2' and a memory 5'. In some embodiments of the invention, the processor 1', the input device 2' and the memory 5' may be connected by a bus 4' or other means, as exemplified by the connection by the bus 4' in fig. 7.

Wherein the memory 5' is used for storing a set of program codes, and the processor 1' calls the program codes stored in the memory 5' for performing the following operations:

receiving, by an input device 2', a subcarrier interval used when a terminal notified by a base station performs communication, the number of symbols included in each slot, and a length of each symbol;

receiving scheduling information transmitted by the base station through an input device 2';

if the scheduling information indicates the position of a first time slot in the aggregated multiple time slots and the number of the multiple time slots, determining the communication resources allocated by the base station according to the position of the first time slot, the number of the multiple time slots, the number of symbols contained in each time slot and the length of each symbol;

and performing communication based on the communication resources allocated by the base station.

As an alternative embodiment, the processor 1 'calls the program code stored in the memory 5' and is further configured to perform the following operations:

at the same time or after receiving the scheduling information through the input device 2', if receiving, through the input device 2', a frequency domain resource corresponding to a specified time slot allocated to the terminal and a part of resources allocated to other terminals and indicated by the base station, determining a frequency domain resource that is not used by the other terminals in the frequency domain resource corresponding to the specified time slot, wherein the specified time slot is one or more time slots in the plurality of time slots;

and in the appointed time slot, performing communication based on the frequency domain resources which are not used by other terminals in the frequency domain resources corresponding to the appointed time slot.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

The resource scheduling device, the terminal and the units in the base station of the embodiment of the invention can be combined, divided and deleted according to actual needs.

It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be implemented by program instructions associated with hardware, and the program may be stored in a computer-readable storage medium, which includes Read-Only Memory (ROM), random Access Memory (RAM), programmable Read-Only Memory (PROM), erasable Programmable Read-Only Memory (EPROM), one-time Programmable Read-Only Memory (OTPROM), electrically Erasable Programmable Read-Only Memory (EEPROM), an optical Disc-Read-Only Memory (CD-ROM) or other storage medium, a magnetic tape, or any other medium capable of storing data for a computer or other computer.

The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and the invention provides a new resource scheduling scheme, so that under the condition that a plurality of terminals use different subcarrier intervals, the signaling overhead during resource allocation can be effectively reduced, users can be ensured to accurately know the time resources allocated to the users, and the system throughput is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A resource scheduling apparatus, comprising:

a first notifying unit, configured to notify a subcarrier interval used by a terminal in communication, the number of symbols included in each slot, and a length of each symbol;

an indicating unit, configured to indicate, to the terminal, a position of a first timeslot in the aggregated multiple timeslots and the number of the multiple timeslots when communication resources need to be allocated to the terminal, so as to indicate, to the terminal, the communication resources allocated to the terminal;

the resource scheduling apparatus further includes:

a determining unit, configured to determine a maximum number of polymerizable slots that can be supported by the terminal;

a second notifying unit configured to notify the terminal of the maximum polymerizable number of timeslots determined by the determining unit;

the determining unit is specifically configured to:

taking the total number of time slots contained in an integer number of subframes or the total number of time slots contained in a non-integer number of subframes as the maximum polymerizable number of time slots;

in the case where the maximum number of slots that can be aggregated is the total number of slots included in one subframe, the slots that can be aggregated include slots within a single subframe or slots between adjacent subframes.

2. The apparatus for resource scheduling according to claim 1, wherein:

the maximum polymerizable time slot numbers under different subcarrier intervals are the same or different; and/or

3. The apparatus according to claim 1, wherein the second notification unit is specifically configured to:

4. The apparatus according to claim 1, wherein the maximum number of time slots that can be aggregated determined for uplink scheduling is the same as or different from the maximum number of time slots that can be aggregated determined for downlink scheduling.

5. The apparatus according to claim 1, wherein the indication unit is specifically configured to:

6. The resource scheduling apparatus according to any one of claims 1 to 5, wherein:

the coding and modulation modes adopted when the data are transmitted in the plurality of time slots are the same; and/or

7. The resource scheduling apparatus according to any of claims 1 to 5, wherein the indication unit is further configured to:

wherein the designated time slot is one or more of the plurality of time slots.

8. A resource scheduling apparatus, comprising:

a first receiving unit, configured to receive a subcarrier interval used by a terminal for communication, the number of symbols included in each slot, and a length of each symbol, which are notified by a base station;

a second receiving unit, configured to receive scheduling information sent by the base station;

a determining unit, configured to determine, when the scheduling information indicates a position of a first time slot in the aggregated multiple time slots and the number of the multiple time slots, a communication resource allocated by the base station according to the position of the first time slot, the number of the multiple time slots, the number of symbols included in each time slot, and a length of each symbol;

a communication unit configured to perform communication based on the communication resource allocated by the base station;

the determining unit is further configured to, while or after the second receiving unit receives the scheduling information, if the frequency domain resource corresponding to the specified time slot allocated to the terminal and the partial resource allocated to other terminals and indicated by the base station are received, determine a frequency domain resource that is not used by the other terminals in the frequency domain resource corresponding to the specified time slot, where the specified time slot is one or more time slots in the multiple time slots;

the communication unit is specifically configured to, in the specified time slot, perform communication based on the frequency domain resources that are not used by the other terminals in the frequency domain resources corresponding to the specified time slot.

9. A method for scheduling resources, comprising:

informing a terminal of subcarrier intervals used in communication, the number of symbols contained in each time slot and the length of each symbol;

when communication resources need to be allocated to the terminal, indicating the position of a first time slot in the aggregated multiple time slots and the number of the multiple time slots to the terminal so as to indicate the communication resources allocated to the terminal;

the resource scheduling method further comprises:

notifying the terminal of the determined maximum number of polymerizable timeslots;

the step of determining the maximum number of the polymerizable timeslots that the terminal can support specifically includes:

10. The method of claim 9, wherein:

11. The method according to claim 9, wherein the step of notifying the determined maximum number of the polymerizable timeslots to the terminal specifically comprises:

12. The method according to claim 9, wherein the maximum number of time slots that can be aggregated determined for uplink scheduling is the same as or different from the maximum number of time slots that can be aggregated determined for downlink scheduling.

13. The method of claim 9, wherein a position of a first slot of the aggregated multiple slots and the number of the multiple slots are indicated to the terminal through DCI signaling, and wherein a format of the DCI signaling is different from a format of the DCI signaling transmitted when the terminal is scheduled for a single slot.

14. The method according to any of claims 9 to 13, wherein:

the coding and modulation modes adopted when the data are transmitted in the time slots are the same; and/or

15. The method according to any of claims 9 to 13, further comprising:

wherein the designated time slot is one or more of the plurality of time slots.

16. A method for scheduling resources, comprising:

receiving a subcarrier interval used by a terminal notified by a base station during communication, the number of symbols contained in each time slot and the length of each symbol;

receiving scheduling information sent by the base station;

performing communication based on the communication resources allocated by the base station;

the resource scheduling method further comprises:

while or after the scheduling information is received, if frequency domain resources corresponding to a specified time slot allocated to the terminal and partial resources allocated to other terminals and indicated by the base station are received, determining frequency domain resources which are not used by other terminals in the frequency domain resources corresponding to the specified time slot, wherein the specified time slot is one or more time slots in the plurality of time slots;