IP Library › Granted Patent US 11,026,238

Granted Patent B2

US 11,026,238 · App. 16/318,585 · Granted Jun 1, 2021

Method and device for configuring semi-persistent scheduling

Inventors: Jinhua Liu (Beijing, CN); Rui Fan (Beijing, CN)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

H04W72/085 H04L5/0082 H04W72/042 H04W72/0446 H04W72/12

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Quick Facts

Patent No.: US 11,026,238
App. No.: 16/318,585
Granted: Jun 1, 2021
Kind: B2

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USPTO Patent Center↗ Full Patent PDF↗

Abstract

A method and device for configuring semi-persistent scheduling (SPS). Information on transmission or reception opportunity is included in SPS configuration when a network device configures the SPS for a terminal device. Therefore, SPS operation with multiple duration (such as slot and/or mini-slot) is enabled and there may be match between the network device and the terminal device when SPS transmission occupy just slots or mini-slots within one subframe.

Claims (52)

1. A method in a network device, comprising:

determining a semi-persistent scheduling configuration for a terminal device, wherein the semi-persistent scheduling configuration includes a plurality of transmission or reception opportunity configurations, each transmission or reception opportunity configuration including information on one or more transmission or reception opportunities;

transmitting the semi-persistent scheduling configuration to the terminal device; and

transmitting, to the terminal device, an index indicating a particular one of the transmission or reception opportunity configurations,

wherein the information on transmission or reception opportunities comprises information on slot and/or mini-slot configuration, and the information on slot and/or mini-slot configuration indicates a number of orthogonal frequency division multiplexing symbols in a slot and/or min-slot.

2. The method according to claim 1 , wherein the information on transmission or reception opportunity comprises a time duration and occurrence time.

3. The method according to claim 1 , wherein the semi-persistent scheduling configuration includes a semi-persistent scheduling interval based on one of the following time units: frame, subframe, slot, mini-slot, orthogonal frequency division multiplexing symbol, and transmission time interval.

4. The method according to claim 1 , wherein the information on slot and/or mini-slot configuration is further used to indicate a numerology configuration over which the semi-persistent scheduling configuration is to be operated.

5. The method according to claim 1 , wherein the slot and/or mini-slot are/is defined by a number of orthogonal frequency division multiplexing symbols of an indicated numerology.

6. The method according to claim 1 , wherein the method further comprises:

based on the index and the semi-persistent scheduling configuration, determining one or more transmission opportunities for downlink or one or more reception opportunities for uplink.

7. The method according to claim 6 , wherein the transmission opportunities or the reception opportunities are determined based on the index and one or more of the following: a slot, mini-slot and orthogonal frequency division multiplexing symbol.

8. The method according to claim 7 , wherein the transmission opportunities for downlink within a semi-persistent scheduling period are determined based on the following formula:

( X*SFN +slot)=[( X *SFNstart time+slotstart time)+ N *semiPersistSchedIntervalDL]modulo(1024* X );

where X is a total number of slots or mini-slots in a radio frame, SFN indicates system frame number, semiPersistSchedIntervalDL indicates a downlink semi-persistent scheduling interval included in the semi-persistent scheduling configuration, slot indicates an index of a slot or mini-slot, N indicates the index of the particular transmission or reception opportunity configuration.

9. The method according to claim 7 , wherein the reception opportunities for uplink within a semi-persistent scheduling period are determined based on the following formula:

( X*SFN +slot)=[( X *SFNstart time+slotstart time)+ N *semiPersistSchedIntervalUL+Slot_Offset*( N modulo 2)]modulo(1024* X );

where X is a total number of slots or mini-slots in a radio frame, SFN indicates system frame number, Slot_Offset is a predefined value according to a radio frame or subframe structure, semiPersistSchedIntervalUL indicates an uplink semi-persistent scheduling interval included in the semi-persistent scheduling configuration, slot indicates an index of a slot or mini-slot, N indicates the index of the particular transmission or reception opportunity configuration.

10. The method according to claim 6 , wherein:

an index of a slot and/or mini-slot is defined within a radio frame or within a subframe;

when the index of the slot and/or mini-slot is defined within a subframe, the index is transmitted by downlink control information that activates the semi-persistent scheduling configuration; and

the index is predefined when the transmission or reception opportunities are determined based on a subframe.

11. A method in a terminal device, comprising:

receiving semi-persistent scheduling configuration from a network device, wherein the semi-persistent scheduling configuration includes a plurality of transmission or reception opportunity configurations, each transmission or reception opportunity configuration including information on one or more transmission or reception opportunities; and

receiving, from the network device, an index indicating a particular one of the transmission or reception opportunity configurations,

12. The method according to claim 11 , wherein the information on transmission or reception opportunity comprises a time duration and occurrence time.

13. The method according to claim 12 , wherein the semi-persistent scheduling configuration includes a semi-persistent scheduling interval based on one of the following time units: frame, subframe, slot, mini-slot, orthogonal frequency division multiplexing symbol, and transmission time interval.

14. The method according to claim 11 , wherein the information on slot and/or mini-slot configuration is further used to indicate a numerology configuration over which the semi-persistent scheduling configuration is to be operated.

15. The method according to claim 11 , wherein the slot and/or mini-slot are/is defined by a number of orthogonal frequency division multiplexing symbols of an indicated numerology.

16. The method according to claim 11 , wherein the method further comprises:

based on the index and the semi-persistent scheduling configuration, determining one or more transmission opportunities for uplink or one or more reception opportunities for downlink.

17. The method according to claim 16 , wherein the transmission opportunities or the reception opportunities are determined based on the index and one or more of the following: a slot, mini-slot and orthogonal frequency division multiplexing symbol.

18. The method according to claim 17 , wherein the reception opportunities for downlink within a semi-persistent scheduling period are determined based on the following formula:

( X*SFN +slot)=[( X *SFNstart time+slotstart time)+ N *semiPersistSchedIntervalDL]modulo(1024* X );

19. The method according to claim 18 , wherein the transmission opportunities for uplink within a semi-persistent scheduling period are determined based on the following formula:

( X*SFN +slot)=[( X *SFNstart time+slotstart time)+ N *semiPersistSchedIntervalUL+Slot_Offset*( N modulo 2)]modulo(1024* X );

20. The method according to claim 17 , wherein:

an index of a slot and/or mini-slot is defined within a radio frame or within a subframe;

when the index of the slot and/or mini-slot is defined within a subframe, the index is received by downlink control information that activates the semi-persistent scheduling configuration; and

the index is predefined when the transmission or reception opportunities are determined based on a subframe.

21. A network device, comprising a processor and a memory, wherein the memory contains instructions executable by the processor whereby the network device is configured to:

determine a semi-persistent scheduling configuration for a terminal device, wherein the semi-persistent scheduling configuration includes a plurality of transmission or reception opportunity configurations, each transmission or reception opportunity configuration including information on one or more transmission or reception opportunities;

transmit the semi-persistent scheduling configuration to the terminal device; and

transmit, to the terminal device, an index indicating a particular one of the transmission or reception opportunity configurations,

22. A terminal device, comprising a processor and a memory, wherein the memory contains instructions executable by the processor whereby the terminal device is configured to:

receive semi-persistent scheduling configuration from a network device, wherein the semi-persistent scheduling configuration includes a plurality of transmission or reception opportunity configurations, each transmission or reception opportunity configuration including information on one or more transmission or reception opportunities; and

receive, from the network device, an index indicating a particular one of the transmission or reception opportunity configurations,

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 17, 2019

From: LIU, JINHUA; FAN, RUI

To: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Reel/Frame 048051/0609 →

Priority Claims (1)

WO PCT/CN2017/083249 · May 5, 2017 · international

Continuity (1)

Related Publication 20190281606A1 · Sep 12, 2019