CN114257348A

CN114257348A - Method and device for acquiring scheduling delay

Info

Publication number: CN114257348A
Application number: CN202011029828.1A
Authority: CN
Inventors: 赵思聪
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-03-29

Abstract

The embodiment of the application discloses a method and a device for acquiring scheduling time delay, wherein the method comprises the following steps: and when the process number of the hybrid automatic repeat request meets a first condition, acquiring the scheduling delay of the first physical downlink shared channel according to the first indication domain and/or the second indication domain in the downlink control information. According to the method and the device, through designing the indication mode of the downlink control information, after introducing an additional HARQ process number and an additional scheduling delay, the waste of resources can be effectively reduced, and the utilization rate of the resources is improved.

Description

Method and device for acquiring scheduling delay

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for acquiring scheduling delay.

Background

The current system uses 10 parallel Hybrid Automatic Repeat reQuest (HARQ) process numbers (process numbers are from 0 to 9), and the data is scheduled with a fixed scheduling delay, which is 2 sub-frames. When a terminal is switched to 2 subframes before uplink data transmission in a Half Duplex Frequency Division Duplex (HD-FDD) mode, a base station cannot transmit scheduling information; however, when the terminal switches to the first two subframes after the downlink after completing the uplink transmission, the base station cannot transmit the scheduling data due to the fixed scheduling delay, and in order to avoid the waste of the resources and increase the data rate, an additional HARQ process number and an additional scheduling delay need to be introduced. After introducing additional scheduling delay, the terminal has multiple scheduling delays, and how to indicate/determine the current scheduling delay is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for acquiring scheduling delay, which can effectively reduce resource waste and improve the utilization rate of resources after introducing an additional HARQ process number and additional scheduling delay.

In a first aspect, an embodiment of the present application provides a method for acquiring a scheduling delay, where the method includes:

and when the process number of the hybrid automatic repeat request meets a first condition, acquiring the scheduling delay of the first physical downlink shared channel according to the first indication domain and/or the second indication domain in the downlink control information.

In a second aspect, an embodiment of the present application provides an apparatus for acquiring a scheduling delay, where the apparatus includes:

and the obtaining unit is used for obtaining the scheduling delay of the first physical downlink shared channel according to the first indication domain and/or the second indication domain in the downlink control information when the hybrid automatic repeat request process number meets the first condition.

In a third aspect, embodiments of the present application provide a network device, which includes a processor, a memory, a communication interface, and one or more programs, which are stored in the memory and configured to be executed by the processor, and which include instructions for performing some or all of the steps described in the method of the second aspect.

In a fourth aspect, the present invention provides a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform some or all of the steps described in the method of the first or second aspect.

In a fifth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps described in the method according to the first or second aspect of the embodiments of the present application. The computer program product may be a software installation package.

It can be seen that, in the method for obtaining scheduling delay provided in the embodiment of the present application, when the harq process number satisfies the first condition, the scheduling delay of the first physical downlink shared channel is obtained according to the first indication field and/or the second indication field in the downlink control information. According to the method and the device, through designing the indication mode of the downlink control information, after introducing an additional HARQ process number and an additional scheduling delay, the waste of resources can be effectively reduced, and the utilization rate of the resources is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2A is a schematic diagram of scheduling delay according to an embodiment of the present application;

fig. 2B is a schematic diagram of another scheduling delay provided in the embodiment of the present application;

fig. 2C is a schematic diagram of another scheduling delay provided in the embodiment of the present application;

fig. 2D is a schematic diagram of another scheduling delay provided in the embodiment of the present application;

fig. 3 is a schematic diagram of another scheduling delay provided in the embodiment of the present application;

fig. 4 is a schematic flowchart of a method for acquiring scheduling delay according to an embodiment of the present application;

fig. 5A is a schematic diagram of another scheduling delay according to an embodiment of the present application;

fig. 5B is a schematic diagram of another scheduling delay according to an embodiment of the present application;

fig. 5C is a schematic diagram of another scheduling delay according to an embodiment of the present application;

fig. 5D is a schematic diagram of another scheduling delay according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an apparatus for acquiring scheduling delay according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

It should be understood that the technical solutions provided in the embodiments of the present application may be applied to various communication systems, for example: a 5G communication system (e.g., New Radio, NR)), where the 5G mobile communication system includes a 5G mobile communication system of a non-independent Network (NSA) and/or a 5G mobile communication system of an independent network (SA), and a main application scenario of the 5G communication system is as follows: enhanced Mobile broadband (eMBB) traffic, massive Machine-type Communication (mMTC) traffic, and high-reliability Low-Latency Communication (URLLC). The technical solution provided in the present application may also be applied to a communication system with a convergence of multiple communication technologies (for example, a communication system with a convergence of an LTE technology and an NR technology), or may be applied to various future new communication systems, for example, a 6G communication system, a 7G communication system, and the like, which is not limited in this embodiment of the present application. The technical solution of the embodiment of the present application is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-any-object communication (Vehicle-to-event) architecture, and the like.

Referring to fig. 1, fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present disclosure. As shown in fig. 1, the wireless communication system may include a network device and a terminal device. The network device may communicate with the terminal device through wireless communication. In the process of sending data to the terminal device by the network device, if the network device needs to retransmit, the network device may carry an HARQ process number by sending a Physical Downlink Control Channel (PDCCH), schedule a Physical Downlink Shared Channel (PDSCH) to transmit Downlink data, and the terminal device may feedback one or more PDSCHs by sending a Physical Uplink Control Channel (PUCCH). The form and number of the network devices and the terminal devices shown in fig. 1 are only for example and do not constitute a limitation to the embodiments of the present application.

The terminal device related to the embodiment of the present application includes a device with a wireless communication function, and the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in smart home (smart home), and the like. The terminal device may also be a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, a Network device or other processing device connected to a wireless modem, a terminal device in a future 5G Network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like. The terminal devices in different networks may be called different names, for example: a user equipment, an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a user terminal, a Wireless communication device, a user agent or a user equipment, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) Station, a Personal Digital Assistant (PDA), a terminal device in a 5G network or a future evolution network, etc., which are not limited in this embodiment.

The network device according to the embodiment of the present application may be a Base Station (BS), which may also be referred to as a Base Station device, and is a device deployed in a radio access network to provide a wireless communication function. For example, the device providing the Base Station function in the 2G Network includes a Base Transceiver Station (BTS) and a Base Station Controller (BSC), the device providing the Base Station function in the 3G Network includes a node B (NodeB) and a Radio Network Controller (RNC), the device providing the Base Station function in the 4G Network includes an evolved node B (eNB), the device providing the Base Station function in the Wireless Local Area Network (WLAN) is an Access Point (Access Point, AP), the device providing the Base Station function in the 5G New Radio (New Radio, NR) includes a node B (gnb) that continues to evolve, and the device providing the Base Station function in a future New communication system, and the like.

Downlink transmission of a current machine-type communication (MTC) system adopts 10 parallel HARQ process numbers (HARQ IDs), and Scheduling delay (Scheduling delay) of a PDSCH is fixed to 2 subframes, as shown in fig. 2A. A machine type Physical Downlink Control Channel (MPDCCH) M0 on subframe 0 with a scheduled PDSCH D0 in subframe 2; MPDCCH M1 on subframe 1, its scheduled PDSCH D1 is on subframe 3. In order to improve the data rate, the MTC system introduces HARQ bundling technology in rel.14 version, that is, feedback information of multiple PDSCHs can be sent on one uplink subframe through logic and combination to form 1-bit feedback information, so that it is avoided that each downlink data needs one uplink feedback subframe, thereby increasing the number of downlink PDSCH subframes. As shown in fig. 2A, feedback information for PDSCH of subframe 2, subframe 3, subframe 4, subframe 5 (D0, D1, D2, D4, respectively) is transmitted on subframe 13, corresponding to a 0. Therefore, the subframe 10 and the subframe 11 cannot transmit the MPDCCH, because according to the rule that the scheduling delay is 2, data scheduled by the subframe 10 and the subframe 11 is in the subframe 12 and the subframe 13, the subframe 12 is an uplink/downlink switching subframe, and the subframe 13 is an uplink subframe, at this time, the terminal device is in a switching state or an uplink transmission state, and cannot receive the data.

As shown in fig. 2B, since the subframe 10 and the subframe 11 cannot transmit MPDCCH, PDSCH cannot be transmitted in the first two subframes (subframe 17 and subframe 18) after switching to downlink after uplink transmission is completed, because the MPDCCH should be located in subframe 15 and subframe 16 when subframe 17 and subframe 18 transmit PDSCH according to the specification that the scheduling delay is 2 subframes, subframe 15 is an uplink subframe, subframe 16 is an uplink and downlink switching subframe, and at this time, the terminal device is in an uplink transmission state or a switching state and cannot receive data.

In order to enable subframe 10 and subframe 11 to transmit MPDCCH and subframe 17 and subframe 18 to transmit PDSCH, the PDSCH on subframe 17 and subframe 18 is scheduled by using MPDCCH transmitted on subframe 10 and subframe 11, in which case a new scheduling delay needs to be introduced: 7 subframes as shown in fig. 2C. In this case, 12 HARQ processes are needed, but considering that the PDSCH feedback scheduled by the newly introduced 2 HARQ processes is at or after subframe 30, at which time subframe 27 and subframe 28 cannot reuse the newly introduced 2 HARQ ids, because the PDSCH is not scheduled before for feedback, as shown in fig. 2D, if a retransmission occurs, it cannot be determined whether the newly introduced 2 HARQ ids are for the retransmission of the first transmission or the retransmission of the second transmission. Therefore, a total of 4 HARQ IDs needs to be newly introduced.

For the newly introduced HARQ ID and scheduling delay (7 subframes), two methods for indicating the scheduling delay have been disclosed. The first is to reuse a field of Downlink Control Information (DCI) and to redefine the indication meaning of the DCI field. The second is to add a 1-bit field in the DCI to indicate whether the current scheduling delay is 2 or 7.

For the first method, if the HARQ ID indicated by the 'HARQ-ID' field in the DCI is less than 10, the scheduling delay is fixed to 2 subframes, i.e. the current indication mode is reused; if the HARQ ID indicated by the 'HARQ-ID' field in the DCI is greater than or equal to 10, it means that the newly introduced 4 HARQ IDs are used, and its scheduling delay and HARQ ID are determined by the indication of the 'HARQ-ACK delay' field in the DCI and the restrictions of the following table, and the pseudo code form is as shown in table 1.

TABLE 1

TABLE 2

"HARQ-ACK delay" field in DCI	HARQ ID	PDSCH scheduling delay
			000	10	2
001	10	7
			010	11	2
011	11	7
			100	12	2
101	12	7
			110	13	2
111	13	7

TABLE 3

The second method (adding a 1-bit field in the DCI) may cause some coverage problems, and generally, the longer the bit of the DCI, the worse the coverage, so the second method is not considered in the present invention from the coverage point of view. The first method does not increase the bit length of DCI, but limits some scheduling flexibility, for example, when the number of scheduled Transport Blocks (TBs) is less, for example, when 8 TBs, 4 TBs, or less TBs are used, the number of subframes used for uplink transmission when HARQ bundling is used is further reduced, so that a newly introduced scheduling delay 7 also causes a waste of subframe resources, as shown in fig. 3, when the scheduling delay is 7, a waste of 1 subframe and 2 subframes is caused due to a reduction of required uplink feedback subframes. In fig. 3 a, when data scheduling is performed on subframe 10 and subframe 11 according to scheduling delay 7, PDSCH thereof is on subframe 17 and subframe 18, and thus subframe 16 cannot be scheduled. In addition, subframe 17 and subframe 18 are scheduled, resulting in no MPDCCH being sent on subframe 16, since subframe 10 is already occupied at the scheduling interval of 2. In b of fig. 3, when subframe 5 and subframe 6 are scheduled with the scheduling delay 7, the PDSCH thereof is in subframe 12 and subframe 13, so that subframe 10 and subframe 11 cannot be scheduled. In addition, subframe 12 and subframe 13 are scheduled, which results in that MPDCCH cannot be transmitted on subframe 10 and subframe 11, because subframe 12 and subframe 13 are already occupied according to the scheduling interval of 2.

In order to solve the above problem, the present application provides a method for obtaining scheduling delay, where when a harq process number satisfies a first condition, a first physical downlink shared channel scheduling delay is obtained according to a first indication field and/or a second indication field in downlink control information. According to the method and the device, through designing the indication mode of the downlink control information, after introducing an additional HARQ process number and an additional scheduling delay, the waste of resources can be effectively reduced, and the utilization rate of the resources is improved.

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part 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.

Referring to fig. 4, fig. 4 is a flowchart illustrating a method for acquiring a scheduling delay according to an embodiment of the present application, and the method is applied to the wireless communication system shown in fig. 1. As shown in fig. 4, the method includes the steps of:

s410, when the number of the hybrid automatic repeat request process meets a first condition, acquiring the scheduling delay of the first physical downlink shared channel according to the first indication domain and/or the second indication domain in the downlink control information.

Wherein the first condition may be that the harq process number is greater than or equal to 10. When the HARQ ID is greater than or equal to 10, it indicates that the network device uses the newly introduced HARQ ID, and its scheduling delay is not 2 subframes which are fixed. The method for determining the first condition is that the terminal reads the HARQ-ID field, if the HARQ-ID indicated by the HARQ-ID field is greater than or equal to 10, the HARQ-ID field no longer indicates the HARQ ID but indicates, for example, HARQ feedback delay and/or other information, and the HARQ ID is indicated according to other fields. When the scheduled TB is relatively few, setting the newly introduced scheduling delay to 7 subframes also causes a waste of subframe resources. Therefore, when the HARQ ID is greater than or equal to 10 and there are few TBs for transmitting the PDSCH, it is necessary to acquire a newly introduced HARQ ID and a PDSCH delay corresponding to the HARQ ID.

Optionally, the first indication field is a hybrid automatic repeat request feedback delay field, and the second indication field is a repetition number indication field.

Specifically, the Repetition number indicates that the Repetition number field is invalid when the HARQ bundling technique is employed, and the value thereof is fixed to 1. Therefore, in the embodiment of the present application, when the HARQ ID is greater than or equal to 10, the value of the PDSCH scheduling delay may be indicated by redefining two bits of the Repetition number field. Wherein, the newly introduced 4 HARQ IDs adopt the HARQ binding technology and do not support retransmission again.

The first indication domain may also be another existing domain or a newly added domain in the DCI, and the existing domain may redefine bits in the existing domain to indicate a mapping relationship between the HARQ ID and the PDSCH scheduling delay when the HARQ ID is greater than or equal to 10; the newly added field may be used to indicate a mapping relationship between the HARQ ID and the PDSCH scheduling delay when the HARQ ID is greater than or equal to 10.

Further, the second indication field may also be an existing field or a newly added field in the DCI, and the existing field may redefine bits in the existing field to indicate a value of the PDSCH scheduling delay when the HARQ ID is greater than or equal to 10; the added field may be used to indicate a value of PDSCH scheduling delay when the HARQ ID is greater than or equal to 10.

In a possible embodiment, the obtaining, according to the first indication field and/or the second indication field in the downlink control information, the scheduling delay of the first physical downlink shared channel includes:

determining a mapping table corresponding to the first indication domain based on the value of the second indication domain; and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and the mapping table.

In the embodiment of the application, for HARQ IDs greater than or equal to 10, other PDSCH scheduling delays are introduced on the basis that the PDSCH scheduling delay is 7, a mapping table corresponding to the first indication field is determined according to the value of the second indication field, that is, a mapping table indicating HARQ IDs and PDSCH scheduling delays in the HARQ ACK delay field is determined according to the value of the Repetition number field, and HARQ IDs and PDSCH scheduling delays corresponding to the value of the second indication field are determined according to the mapping table.

The pseudo code form for determining the HARQ ID and the PDSCH scheduling delay according to the Repetition number field and the HARQ ACK delay field is shown in table 4.

TABLE 4

Specifically, when the Repetition number field is the first code point (for example, 00), the HARQ ACK time delay field is used to indicate that scheduling with PDSCH scheduling time delay of 2 and DSCH scheduling time delay of 7 is supported, and a mapping table corresponding to the HARQ ACK time delay field is shown in table 2. When the Repetition number field is the second code point (e.g. 01), the HARQ ACK delay field is used to indicate that the scheduling with PDSCH scheduling delay of 2 and DSCH scheduling delay of 5 is supported, and a mapping table corresponding to the HARQ ACK delay field is shown in table 5.

TABLE 5

"HARQ-ACK delay" field in DCI	HARQ ID	PDSCH scheduling delay
			000	10	2
001	10	5
			010	11	2
011	11	5
			100	12	2
101	12	5
			110	13	2
111	13	5

When the Repetition number field is the third code point (e.g. 10), the HARQ ACK delay field is used to indicate that the scheduling with PDSCH scheduling delay of 2 and DSCH scheduling delay of 6 is supported, the mapping table corresponding to the HARQ ACK delay field is shown in table 6,

TABLE 6

For example, as shown in fig. 5A, 8 TBs, D0, D1, D2, D3, D4, D5, D6, and D7, need to be scheduled on a PDSCH, and the 8 TBs need two feedback subframes (each subframe feeds back 4 PDSCHs), so a scheduling delay of 6 subframes is needed. In this case, in DCI M10 on subframe 10, the Repetition number field is indicated as 10, and table 6 is used. As can be seen from table 6, the HARQ ID corresponding to the HARQ-ACK delay field 001 is 10, and the scheduling delay is 6; the HARQ-ACK delay domain is 011, the corresponding HARQ ID is 11, and the scheduling delay is 6. In this way, D10 can be scheduled on subframe 16, avoiding the waste of subframe 16. As shown in fig. 5B, 4 TBs, D0, D1, D2, and D3, need to be scheduled on the PDSCH, and the 4 TBs only need 1 feedback subframe (each subframe feeds back 4 PDSCHs), so a scheduling delay of 5 subframes is needed. In this case, in DCI M10 on subframe 5, the Repetition number field is indicated as 01, indicating that table 5 above is used. As can be seen from table 5, the HARQ ID corresponding to the HARQ-ACK delay field 001 is 10, and the scheduling delay is 5; the HARQ-ACK delay domain is 011, the corresponding HARQ ID is 11, and the scheduling delay is 5. In this way, D10 can be scheduled on subframe 10, avoiding the waste of subframe 10.

It should be noted that the first code point, the second code point, and the third code point may be any one of 00, 01, 10, and 11, and the first code point, the second code point, and the third code point are not equal to each other. For example, when the first code point is 01, the second code point may be 10, and the third code point may be 11; when the first code point is 10, the second code point may be 00, and the third code point may be 11.

determining the hybrid automatic repeat request process number and a second physical downlink shared channel scheduling delay set based on the first indication domain; and determining the first physical downlink shared channel time delay based on the second physical downlink shared channel scheduling time delay set and the second indication domain.

Specifically, to avoid the waste of subframe resources, different PDSCH scheduling delays may be configured according to different system requirements. When the HARQ ID is greater than or equal to 10, determining, according to a mapping table of the HARQ ACK delay domain, a HARQ ID corresponding to the first indication domain and a second PDSCH scheduling delay set X, where the mapping table of the HARQ ACK delay domain is shown in table 7 and is used to indicate a mapping relationship between the HARQ ACK delay domain and the HARQ ID and the second PDSCH scheduling delay set X, the second PDSCH scheduling delay set is a set of PDSCH scheduling delays that can be selected by the HARQ ID that is greater than or equal to 10, and the second PDSCH scheduling delay set X may be {5,6,7 }. The corresponding first set of PDSCH scheduling delays is 2.

TABLE 7

"HARQ-ACK delay" field in DCI	HARQ ID	PDSCH scheduling delay
			000	10	2
001	10	X
			010	11	2
011	11	X
			100	12	2
101	12	X
			110	13	2
111	13	X

After determining the HARQ ID, determining the PDSCH scheduling delay corresponding to the HARQ ID from the second PDSCH scheduling delay set according to the value of the Repetition number field, where a mapping relationship between the Repetition number field and the second PDSCH scheduling delay set is shown in table 8.

TABLE 8

Repetition number field	Second PDSCH scheduling delay set X
		00	5
01	6
		10	7
11	Retention

and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and a preset mapping table.

For HARQ IDs greater than or equal to 10, in order to reduce the waste of subframe resources, HARQ IDs and PDSCH scheduling delays corresponding to the value of the HARQ ACK delay field may be determined according to a preset mapping table. The preset mapping table may be the above tables 1 to 3.

Optionally, the method further includes: when the first physical downlink shared channel scheduling delay is a third physical downlink shared channel scheduling delay, calculating a fourth physical downlink shared channel scheduling delay based on the third physical downlink shared channel scheduling delay and the number of first uplink feedback subframes, wherein the first uplink feedback subframes are the number of uplink subframes used for uplink feedback between a control channel and the physical downlink shared channel when the first physical downlink shared channel scheduling delay is used for scheduling the physical downlink shared channel; and determining the fourth physical downlink shared channel scheduling delay as the first physical downlink shared channel scheduling delay.

And when the PDSCH scheduling time delay corresponding to the value of the HARQ ACK time delay domain is determined to be 7 according to the mapping table, namely the third PDSCH scheduling time delay is 7, performing implicit calculation on the basis that the PDSCH scheduling time delay is 7. And when the number of the first uplink feedback subframes is less than 3, re-determining the PDSCH scheduling time delay used by the HARQ ID according to the number of the first uplink feedback subframes.

Optionally, the calculating the scheduling delay of the fourth physical downlink shared channel includes: calculating the fourth physical downlink shared channel scheduling delay based on a first formula, where the first formula is represented as: and the fourth physical downlink shared channel scheduling delay is equal to the third physical downlink shared channel scheduling delay- (3-the number of the first uplink feedback subframes).

Specifically, when the scheduled TB is less, the number L of the first uplink feedback subframes may be less than 3 subframes, and the scheduling delay that may be required is less than 7 subframes, so to reduce the waste of subframe resources, the HARQ ID and the first PDSCH scheduling delay may be obtained according to the above tables 1 to 3, and then the first PDSCH scheduling delay and the uplink feedback subframe number L required for scheduling the TB are substituted into the first formula to calculate the PDSCH delay actually required for the HARQ ID, that is, when the third PDSCH scheduling delay (the PDSCH scheduling delay obtained according to the current indication mode) is 7, the first PDSCH scheduling delay (the actually adopted PDSCH scheduling delay) is re-determined according to the number of uplink feedback subframes.

The pseudo code form for determining the HARQ ID and the first PDSCH scheduling delay according to the number L of the first uplink feedback subframes and the HARQ ACK delay field is shown in table 9.

TABLE 9

For example, as shown in fig. 5C, the number of the scheduled TBs before switching to uplink is 8, which are D0, D1, D2, D3, D4, D5, D6, and D7, and the 8 TBs require two feedback subframes (each uplink subframe feeds back 4 PDSCHs), so that a scheduling delay of 6 subframes is required. The HARQ-ACK delay fields in the subframe 10 and the subframe 11 are 001 and 011 respectively, which can be obtained from tables 1 to 3, the HARQ IDs indicated by the HARQ-ACK delay fields 001 and 011 are 10 and 11 respectively, and the indicated PDSCH scheduling delay is 7, but actually there are only 2 uplink feedback subframes, i.e., L ═ 2, so that the actual PDSCH scheduling delay of the subframe 10 and the subframe 11 is PDSCH scheduling delay- (3-L) ═ 7-3+2 ═ 6. As shown in fig. 5D, when the number of scheduled TBs before switching to uplink is 4, which are D0, D1, D2, and D3, the 4 TBs only need 1 uplink feedback subframe (each subframe feeds back 4 PDSCHs), and therefore, a scheduling delay of 5 subframes is needed. The HARQ-ACK delay fields in subframe 5 and subframe 6 are 001 and 011 respectively, which can be obtained from tables 1 to 3, HARQ IDs indicated by the HARQ-ACK delay fields 001 and 011 are 10 and 11 respectively, and the indicated PDSCH scheduling delay is 7, but actually there are only 1 uplink feedback subframe, i.e., L equals to 1, so that the actual PDSCH scheduling delay of subframe 5 and subframe 6 is PDSCH scheduling delay- (3-L) ═ 7-3+1 equals to 5.

It can be seen that the present application provides a method for obtaining scheduling delay, when a harq process number satisfies a first condition, obtaining a scheduling delay of a first physical downlink shared channel according to a first indication field and/or a second indication field in downlink control information. According to the method and the device, through designing the indication mode of the downlink control information, after introducing an additional HARQ process number and an additional scheduling delay, the waste of resources can be effectively reduced, and the utilization rate of the resources is improved.

The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the network device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Referring to fig. 6, fig. 6 is a block diagram illustrating functional units of an apparatus 600 for acquiring scheduling delay according to an embodiment of the present application, where the apparatus 600 includes: an acquisition unit 610.

In a possible implementation manner, the apparatus 600 is configured to execute each flow and step corresponding to the network device in the above method for acquiring the scheduling delay.

Optionally, the obtaining unit 610 is specifically configured to: determining a mapping table corresponding to the first indication domain based on the value of the second indication domain; and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and the mapping table.

Optionally, the obtaining unit 610 is specifically configured to: determining the hybrid automatic repeat request process number and a second physical downlink shared channel scheduling delay set based on the first indication domain; and determining the first physical downlink shared channel time delay based on the second physical downlink shared channel scheduling time delay set and the second indication domain.

Optionally, the obtaining unit 610 is specifically configured to: and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and a preset mapping table.

Optionally, the apparatus further includes a calculating unit 620 and a determining unit 630, where the calculating unit 620 is configured to: when the first physical downlink shared channel scheduling delay is a third physical downlink shared channel scheduling delay, calculating a fourth physical downlink shared channel scheduling delay based on the third physical downlink shared channel scheduling delay and the number of first uplink feedback subframes, wherein the first uplink feedback subframes are the number of uplink subframes used for uplink feedback between a control channel and the physical downlink shared channel when the first physical downlink shared channel scheduling delay is used for scheduling the physical downlink shared channel;

the determining unit 630 is configured to: determining the fourth physical downlink shared channel scheduling delay as the first physical downlink shared channel scheduling delay

Optionally, the calculating unit 620 is specifically configured to: calculating the fourth physical downlink shared channel scheduling delay based on a first formula, where the first formula is represented as: and the fourth physical downlink shared channel scheduling delay is equal to the third physical downlink shared channel scheduling delay- (3-the number of the first uplink feedback subframes).

Optionally, the first condition is: the hybrid automatic repeat request process number is greater than or equal to 10.

It should be appreciated that the apparatus 600 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 600 may be embodied as the terminal device and the network device in the foregoing embodiment, and the apparatus 600 may be configured to execute each procedure and/or step corresponding to the terminal device and the network device in the foregoing method embodiment, and details are not described here again to avoid repetition.

The apparatus 600 of each of the above schemes has functions of implementing corresponding steps executed by the terminal device and the network device in the above methods; the functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions; for example, the obtaining unit 610 may be replaced by a processor, and perform the transceiving operation and the related processing operation in each method embodiment, respectively.

In an embodiment of the present application, the apparatus 600 in fig. 6 may also be a chip or a chip system, for example: system on chip (SoC). Correspondingly, the transceiver unit may be a transceiver circuit of the chip, and is not limited herein.

Referring to fig. 7, fig. 7 is a network device according to an embodiment of the present application, where the network device includes: one or more processors, one or more memories, one or more communication interfaces, and one or more programs; the one or more programs are stored in the memory and configured to be executed by the one or more processors.

The program includes instructions for performing the steps of:

Optionally, in terms of obtaining the scheduling delay of the first physical downlink shared channel according to the first indication field and/or the second indication field in the downlink control information, the program includes an instruction further configured to perform the following steps: determining a mapping table corresponding to the first indication domain based on the value of the second indication domain; and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and the mapping table.

Optionally, in terms of obtaining the scheduling delay of the first physical downlink shared channel according to the first indication field and/or the second indication field in the downlink control information, the program includes an instruction further configured to perform the following steps: determining the hybrid automatic repeat request process number and a second physical downlink shared channel scheduling delay set based on the first indication domain; and determining the first physical downlink shared channel time delay based on the second physical downlink shared channel scheduling time delay set and the second indication domain.

Optionally, in terms of obtaining the scheduling delay of the first physical downlink shared channel according to the first indication field and/or the second indication field in the downlink control information, the program includes an instruction further configured to perform the following steps: and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and a preset mapping table.

Optionally, the program includes instructions for performing the following steps: when the first physical downlink shared channel scheduling delay is a third physical downlink shared channel scheduling delay, calculating a fourth physical downlink shared channel scheduling delay based on the third physical downlink shared channel scheduling delay and the number of first uplink feedback subframes, wherein the first uplink feedback subframes are the number of uplink subframes used for uplink feedback between a control channel and the physical downlink shared channel when the first physical downlink shared channel scheduling delay is used for scheduling the physical downlink shared channel; and determining the fourth physical downlink shared channel scheduling delay as the first physical downlink shared channel scheduling delay.

Optionally, in terms of calculating the fourth physical downlink shared channel scheduling delay, the program includes instructions further configured to perform the following steps: calculating the fourth physical downlink shared channel scheduling delay based on a first formula, where the first formula is represented as: and the fourth physical downlink shared channel scheduling delay is equal to the third physical downlink shared channel scheduling delay- (3-the number of the first uplink feedback subframes).

It will be appreciated that the memory described above may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information.

In the embodiment of the present application, the processor of the above apparatus may be a Central Processing Unit (CPU), and the processor may also be other general processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field Programmable Gate Arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It is to be understood that reference to "at least one" in the embodiments of the present application means one or more, and "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first information and the second information are different information only for distinguishing them from each other, and do not indicate a difference in the contents, priority, transmission order, importance, or the like of the two kinds of information.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software elements in a processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods as described in the above method embodiments.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributed by the prior art to be embodied in the form of a software product, which is stored in a memory and includes instructions for causing a network device (which may be a personal computer, a server, or a TRP, etc.) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash disk, ROM, RAM, magnetic or optical disk, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A method for acquiring scheduling delay is characterized in that the method comprises the following steps:

2. The method according to claim 1, wherein the obtaining a scheduling delay of a first physical downlink shared channel according to a first indication field and/or a second indication field in downlink control information comprises:

determining a mapping table corresponding to the first indication domain based on the value of the second indication domain;

and determining the hybrid automatic repeat request process number and the scheduling delay of the first physical downlink shared channel based on the first indication domain and the mapping table.

3. The method of claim 1, wherein the obtaining the scheduling delay of the first physical downlink shared channel according to the first indication field and/or the second indication field in the downlink control information comprises:

determining the hybrid automatic repeat request process number and a second physical downlink shared channel scheduling delay set based on the first indication domain;

and determining the first physical downlink shared channel time delay based on the second physical downlink shared channel scheduling time delay set and the second indication domain.

4. The method according to claim 1, wherein the obtaining a scheduling delay of a first physical downlink shared channel according to a first indication field and/or a second indication field in downlink control information comprises:

5. The method of claim 4, further comprising:

when the first physical downlink shared channel scheduling delay is a third physical downlink shared channel scheduling delay, calculating a fourth physical downlink shared channel scheduling delay based on the third physical downlink shared channel scheduling delay and the number of first uplink feedback subframes, wherein the first uplink feedback subframes are the number of uplink subframes used for uplink feedback between a control channel and the physical downlink shared channel when the first physical downlink shared channel scheduling delay is used for scheduling the physical downlink shared channel;

and determining the fourth physical downlink shared channel scheduling delay as the first physical downlink shared channel scheduling delay.

6. The method of claim 5, wherein the calculating the fourth physical downlink shared channel scheduling delay time comprises:

calculating the fourth physical downlink shared channel scheduling delay based on a first formula, where the first formula is represented as: and the fourth physical downlink shared channel scheduling delay is equal to the third physical downlink shared channel scheduling delay- (3-the number of the first uplink feedback subframes).

7. The method according to any of claims 1-6, wherein the first indication field is a hybrid automatic repeat request feedback delay field and the second indication field is a repetition indication field.

8. The method according to any one of claims 1 to 7, wherein the first condition is: the hybrid automatic repeat request process number is greater than or equal to 10.

9. An apparatus for acquiring scheduling delay, the apparatus comprising:

10. A network device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-8.

11. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the steps of the method according to any one of claims 1-8.