Configurable timing relationship and HARQ operational parameters

Patent metadata

Field	Value
Publication number	US-10931409-B2
Application number	US-201716336757-A
Country	US
Kind code	B2
Filing date	Sep 26, 2017
Priority date	Sep 26, 2016
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

Systems and methods for determining configurable timing relationships and operational parameters are provided. In some embodiments, a method of operation of a wireless device in a wireless system includes determining round-trip propagation delay information between the wireless device and a network node. This round-trip propagation delay information may be a round-trip propagation delay a quantized round-trip propagation delay, or any other value indicative of the round-trip propagation delay. The in method also includes determining a Hybrid Automatic Retransmission Request (HARQ) operational parameter based on the round-trip propagation delay information between the wireless device and the network node. In this way, HARQ is extended to work for deployments with large round-trip propagation delays, such as satellite systems. This may increase the throughput and reliability of data transmission.

First claim

What is claimed is:

1. A method of operation of a wireless device in a wireless system, the method comprising:
receiving a System Information Block (SIB), from a network node, comprising round-trip propagation delay information between the wireless device and the network node;
determining a Hybrid Automatic Retransmission Request (HARQ) timing relationship based on the round-trip propagation delay information between the wireless device and the network node; and
determining a number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship.

2. The method of claim 1 , wherein determining the HARQ timing relationship based on the round-trip propagation delay information between the wireless device and the network node comprises receiving a signal comprising the HARQ timing relationship.

3. The method of claim 2 , wherein receiving the signal comprising the HARQ timing relationship comprises receiving the SIB, from the network node comprising the HARQ timing relationship.

4. The method of claim 1 , wherein determining the number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship comprises receiving a signal comprising the number of parallel stop-and-wait HARQ processes.

5. The method of claim 4 , wherein receiving the signal comprising the number of parallel stop-and-wait HARQ processes comprises receiving the SIB from the network node comprising the number of parallel stop-and-wait HARQ processes.

6. The method of claim 1 , wherein determining the number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship comprises:
determining the number of parallel stop-and-wait HARQ processes implicitly from the HARQ timing relationship and/or the round-trip propagation delay information between the wireless device and the network node.

7. The method of claim 1 , further comprising performing a HARQ operation using the determined HARQ timing relationship.

8. The method of claim 1 , wherein the network node is a radio access node.

9. The method of claim 1 , wherein the network node is a radio access node that is in the sky.

10. The method of claim 1 , wherein the network node is a satellite.

11. The method of claim 1 , wherein the network node is a ground earth station that is connected to the wireless device via a satellite.

12. The method of claim 1 , wherein the round-trip propagation delay information between the wireless device and the network node is greater than four milliseconds.

13. A wireless device, comprising:
at least one transceiver; and
circuitry operable to:
receive a System Information Block (SIB), from a network node comprising round-trip propagation delay information between the wireless device and the network node;
determine a Hybrid Automatic Retransmission Request (HARQ) timing relationship based on the round-trip propagation delay information between the wireless device and the network node; and
determine a number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship.

14. A method of operation of a network node in a wireless system, the method comprising:
transmitting a System Information Block (SIB), to a wireless device, comprising round-trip propagation delay information between the wireless device and the network node;
determining a Hybrid Automatic Retransmission Request (HARQ) timing relationship based on the round-trip propagation delay information between the wireless device and the network node; and
determining a number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship.

15. The method of claim 14 , wherein determining the HARQ timing relationship based on the round-trip propagation delay information between the wireless device and the network node comprises transmitting a signal to the wireless device comprising the HARQ timing relationship.

16. The method of claim 15 , wherein transmitting the signal comprising the HARQ timing relationship comprises transmitting the SIB, to the wireless device, comprising the HARQ timing relationship.

17. The method of claim 14 , wherein determining the number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship comprises:
transmitting a signal to the wireless device comprising the number of parallel stop-and-wait HARQ processes.

18. The method of claim 17 , wherein transmitting the signal comprising the number of parallel stop-and-wait HARQ processes comprises transmitting the SIB, to the wireless device, comprising the number of parallel stop-and-wait HARQ processes.

19. The method of claim 14 , further comprising performing a HARQ operation using the determined HARQ timing relationship.

20. The method of claim 14 , wherein the network node is a radio access node.

21. The method of claim 14 , wherein the network node is a radio access node that is in the sky.

22. The method of claim 14 , wherein the network node is a satellite.

23. The method of claim 14 , wherein the network node is a ground earth station that is connected to the wireless device via a satellite.

24. The method of claim 14 , wherein the round-trip propagation delay information between the wireless device and the network node is greater than four milliseconds.

25. A network node, comprising:
at least one processor; and
memory comprising instructions executable by the at least one processor whereby the network node is operable to:
transmit a System Information Block (SIB), to a wireless device comprising round-trip propagation delay information between the wireless device and the network node;
determine a Hybrid Automatic Retransmission Request (HARQ) timing relationship based on the round-trip propagation delay information between the wireless device and the network node; and
determine a number of parallel stop-and-wait HARQ processes based on the HARQ timing relationship.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Lin Xingqin
• Adhikary Ansuman
• Khayrallah Ali S
• Prytz Mikael
• Stattin Magnus
• Wang Yi-Pin Eric

Classifications

• H04W72/542

  using measured or perceived quality · CPC title

• H04L1/1825 Primary

  Adaptation of specific ARQ protocol parameters according to transmission conditions · CPC title

• H04L1/1822 Primary

  involving configuration of automatic repeat request [ARQ] with parallel processes · CPC title

• H04B17/364

  Delay profiles · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title