HIGH RELIABILITY LOW LATENCY MISSION CRITICAL COMMUNICATION

• US 20160128060A1
• Filed: 08/26/2015
• Published: 05/05/2016
• Est. Priority Date: 11/04/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Azarian Yazdi, Kambiz, Ji, Tingfang, Jiang, Jing
• Granted Patent: US 9,936,498 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0018 based on latency requirement
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Systems and methods for communicating mission-critical (MiCri) data in a network including a base station and user equipment (UE) are provided. The methods may include receiving a request message requesting MiCri data, and transmitting the MiCri data during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component. In various aspects, the TTI of the first carrier component may be staggered in time with respect to the TTI of the second carrier component. In another aspect, the UE may pre-report interference pattern information for a nominal TTI for use in communication of MiCri data.

Claims

1. A method for wireless communication, the method comprising:

receiving, at a first device, a request message from a second device requesting mission critical (MiCri) data; and

transmitting, from the first device, the MiCri data to the second device during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component, the TTI of the first carrier component being staggered in time with respect to the TTI of the second carrier component.

2. The method according to claim 1, wherein the transmitting the MiCri data includes transmitting the MiCri data over the first carrier component or the second carrier component based on a timing of the request message.

3. The method according to claim 2, wherein the transmitting the MiCri data includes transmitting a first hybrid automated repeat request (HARQ) block and a second HARQ block.

4. The method according to claim 3, further comprising:

scheduling transmission of the MiCri data over the first carrier component when it is determined that the first HARQ block and the second HARQ block can both be transmitted during the TTI of the first carrier component; and

scheduling transmission of the MiCri data over the second carrier component when it is determined that the first HARQ block and the second HARQ block cannot both be transmitted during the TTI of the first carrier component.

5. The method according to claim 3, wherein transmitting the second HARQ block comprises:

receiving a negative acknowledgment (NACK) from the second device in response to transmitting the first HARQ block; and

transmitting the second HARQ block in response to the receiving the NACK.

6. The method according to claim 1, further comprising:

transmitting, over a downlink control carrier component, a grant message granting the request for the MiCri data, wherein

the transmitting the MiCri data includes transmitting the MiCri data along with the grant message.

7. The method according to claim 1, wherein the first carrier component and the second carrier component are included in a common transmission band.

8. The method according to claim 1, wherein the first carrier component is included in a first transmission band and the second carrier component is included in a second transmission band different than the first transmission band.

9. The method according to claim 1, further comprising:

receiving, at the base station, another request message from the second device requesting non-MiCri data; and

transmitting, from the first device, the non-MiCri data to the UE during a next available TTI from among the TTI of the first carrier component and the TTI of a second carrier component.

10. A method for wireless communication, the method comprising:

transmitting, to a first device from a second device, a request message requesting mission critical (MiCri) data; and

receiving, at the second device, the MiCri data from the first device during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component, the TTI of the first carrier component being staggered in time with respect to the TTI of the second carrier component.

11. The method according to claim 10, wherein the receiving includes receiving the MiCri data over the first carrier component or the second carrier component based on a timing of the request message.

12. The method according to claim 11, wherein the receiving the MiCri data includes receiving a first hybrid automated repeat request (HARQ) block and a second HARQ block.

13. The method according to claim 12, wherein the receiving the MiCri data comprises:

receiving the MiCri data over the first carrier component when it is determined that the first HARQ block and the second HARQ block can both be received during the TTI of the first carrier component; and

receiving the MiCri data over the second carrier component when it is determined that the first HARQ block and the second HARQ block cannot both be received during the TTI of the first carrier component.

14. The method according to claim 12, wherein receiving the second HARQ block comprises:

transmitting a negative acknowledgment (NACK) to the base station in response to receiving the first HARQ block; and

receiving the second HARQ block in response to the transmitting the NACK.

15. The method according to claim 10, further comprising:

receiving, over a downlink control carrier component, a grant message granting the request for the MiCri data, wherein

the receiving the MiCri data includes receiving the MiCri data along with the grant message.

16. The method according to claim 10, wherein the first carrier component and the second carrier component are included in a common reception band.

17. The method according to claim 10, wherein the first carrier component is included in a first reception band and the second carrier component is included in a second reception band different than the first reception band.

18. The method according to claim 10, further comprising:

transmitting, from the second device, another request message to the first device requesting non-MiCri data; and

receiving, at the second device, the non-MiCri data from the first device during a next available TTI from among the TTI of the first carrier component and the TTI of a second carrier component.

19. A base station, comprising:

a receiver configured to receive a request message from a first device requesting mission critical (MiCri) data; and

a transmitter configured to transmit the MiCri data to the first device during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component, wherein

the TTI of the first carrier component is staggered in time with respect to the TTI of the second carrier component.

20. The base station according to claim 19, wherein the transmitter is configured to transmit the MiCri data over the first carrier component or the second carrier component based on a timing of the request message.

21. The base station according to claim 20, wherein, to transmit the MiCri data, the transmitter is configured to transmit a first hybrid automated repeat request (HARQ) block and a second HARQ block.

22. The base station according to claim 21, further comprising:

a scheduler configured to;

schedule transmission of the MiCri data over the first carrier component when it is determined that the first HARQ block and the second HARQ block can both be transmitted during the TTI of the first carrier component, and

schedule transmission of the MiCri data over the second carrier component when it is determined that the first HARQ block and the second HARQ block cannot both be transmitted during the TTI of the first carrier component.

23. The base station according to claim 19, wherein the receiver is configured to receive another request message from the first device requesting non-MiCri data;

and

the transmitter is configured to transmit the non-MiCri data during a next available TTI from among the TTI of the first carrier component and the TTI of a second carrier component.

24. A user equipment (UE), comprising:

a transmitter configured to transmit a request message to a first device requesting mission critical (MiCri) data; and

a receiver configured to receive the MiCri data from the first device during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component, wherein

the TTI of the first carrier component is staggered in time with respect to the TTI of the second carrier component.

25. The user equipment according to claim 24, wherein the receiver is configured to receive the MiCri data over the first carrier component or the second carrier component based on a timing of the request message.

26. The user equipment according to claim 25, wherein the receiver is configured to receive the MiCri data as a first hybrid automated repeat request (HARQ) block and a second HARQ block.

27. The user equipment according to claim 26, wherein the receiver is configured to receive the MiCri data over the first carrier component when it is determined that the first HARQ block and the second HARQ block can both be received during the TTI of the first carrier component, and to receive the MiCri data over the second carrier component when it is determined that the first HARQ block and the second HARQ block cannot both be received during the TTI of the first carrier component.

28. The user equipment according to claim 26, wherein

the transmitter is configured to transmit a negative acknowledgment (NACK) to the first device in response to receiving the first HARQ block;

and

receiver is configured to receive the second HARQ block in response to the transmitting the NACK.

29. The user equipment according to claim 24, wherein the receiver is configured to receive a grant message granting the request of the MiCri data, and to receive the MiCri data along with the grant message.

30. The user equipment according to claim 24, wherein

the transmitter is configured to transmit another request message to the first device requesting non-MiCri data;

and

the receiver is configured to receive the non-MiCri data from the first device during a next available TTI from among the TTI of the first carrier component and the TTI of a second carrier component.