IP Library › Granted Patent US 10,064,188
Granted Patent B2
US 10,064,188 · App. 15/645,591 · Granted Aug 28, 2018

Methods and apparatuses for radio resource management

Inventors: Stefano Sorrentino (Solna, SE); Stefan Parkvall (Bromma, SE)
Assignee: Telefonaktiebolaget LM Ericsson (publ)
H04W72/0453H04B7/2656H04L5/001H04L27/2655H04W56/001H04W56/0045H04W72/12H04L5/0091
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Quick Facts
Patent No.
US 10,064,188
App. No.
15/645,591
Granted
Aug 28, 2018
Kind
B2
Abstract

A radio resource allocation method in a communication node is disclosed. The method comprises determining that a first time reference has a time shift compared to a second time reference. The method further comprises determining a duration of a communication sub-frame based on the time shift, and scheduling the determined communication sub-frame on a first component carrier to a first communication device. Corresponding computer program product, arrangement, communication node and first communication device are also disclosed.

Claims (58)

1. A method in a communication node, the method comprising:

determining that a first time reference of a first communication device has a time shift compared to a second time reference of a second communication device;

determining a duration of a shortened communication sub-frame based on the time shift, the duration of the shortened communication sub-frame being smaller than a duration of a regular communication sub-frame; and

scheduling the first communication device for data communication during the determined shortened communication sub-frame.

2. The method of claim 1 , further comprising transmitting a scheduling message to the first communication device, the scheduling message indicating the duration of the shortened communication sub-frame.

3. The method of claim 2 , wherein the scheduling message further comprises at least one of:

an ending time of the shortened communication sub-frame;

a starting time of the shortened communication sub-frame; and

a time offset of the shortened communication sub-frame.

4. The method of claim 1 , further comprising at least one of:

transmitting data to the first communication device during the shortened communication sub-frame; and

receiving data from the first communication device during the shortened communication sub-frame.

5. The method of claim 1 , wherein scheduling the first communication device comprises scheduling the determined shortened communication sub-frame to start at an indicated beginning or ending of a transmission time interval of the second communication device.

6. The method of claim 1 , wherein the duration of the shortened communication sub-frame is equal to the time shift.

7. The method of claim 1 , wherein the duration of the shortened communication sub-frame is equal to the duration of a regular communication sub-frame minus the time shift.

8. The method of claim 1 , wherein the duration of the shortened communication sub-frame is equal to a smaller number of symbols than a number of symbols in a regular communication sub-frame.

9. The method of claim 1 , wherein the communication node is a first network node of a wireless communication network.

10. The method of claim 1 , wherein the first communication device and the second communication device are the same communication device.

11. The method of claim 1 , wherein the first communication device and the second communication device are different communication devices.

12. A communication node comprising a processor and a memory, the memory containing instructions executable by the processor whereby the communication node is configured to:

determine that a first time reference of a first communication device has a time shift compared to a second time reference of a second communication device;

determine a duration of a shortened communication sub-frame based on the time shift, the duration of the shortened communication sub-frame being smaller than a duration of a regular communication sub-frame; and

schedule the first communication device for data communication during the determined shortened communication sub-frame.

13. The communication node of claim 12 , further configured to transmit a scheduling message to the first communication device, the scheduling message indicating the duration of the shortened communication sub-frame.

14. The communication node of claim 13 , wherein the scheduling message further comprises at least one of:

an ending time of the shortened communication sub-frame;

a starting time of the shortened communication sub-frame; and

a time offset of the shortened communication sub-frame.

15. The communication node of claim 12 , further configured to at least one of:

transmit data to the first communication device during the shortened communication sub-frame; and

receive data from the first communication device during the shortened communication sub-frame.

16. The communication node of claim 12 , further configured to, when scheduling the first communication device, schedule the determined shortened communication sub-frame to start at an indicated beginning or ending of a transmission time interval of the second communication device.

17. The communication node of claim 12 , wherein the duration of the shortened communication sub-frame is equal to the time shift.

18. The communication node of claim 12 , wherein the duration of the shortened communication sub-frame is equal to the duration of a regular communication sub-frame minus the time shift.

19. The communication node of claim 12 , wherein the duration of the shortened communication sub-frame is equal to a smaller number of symbols than a number of symbols in a regular communication sub-frame.

20. The communication node of claim 12 , wherein the communication node is a first network node of a wireless communication network.

21. The communication node of claim 12 , wherein the first communication device and the second communication device are the same communication device.

22. The communication node of claim 12 , wherein the first communication device and the second communication device are different communication device.

23. A method in a first communication device, the method comprising:

receiving a scheduling message from a communication node, the scheduling message indicating a duration of a shortened communication sub-frame, the duration shortened communication sub-frame being based on a time shift between a first time reference of the first communication device and a second time reference of a second communication device, the duration of the shortened communication sub-frame being smaller than a duration of a regular communication sub-frame; and

performing at least one of transmitting data to the communication node and receiving data from the communication node during the shortened communication sub-frame.

24. The method of claim 23 , wherein the scheduling message further comprises at least one of:

an ending time of the shortened communication sub-frame;

a starting time of the shortened communication sub-frame; and

a time offset of the shortened communication sub-frame.

25. The method of claim 23 , wherein the duration of the shortened communication sub-frame is equal to the time shift.

26. The method of claim 23 , wherein the duration of the shortened communication sub-frame is equal to the duration of a regular communication sub-frame minus the time shift.

27. The method of claim 23 , wherein the duration of the shortened communication sub-frame is equal to a smaller number of symbols than a number of symbols in a regular communication sub-frame.

28. A first communication device comprising a processor and a memory, the memory containing instructions executable by the processor whereby the first communication device is configured to:

receive a scheduling message from a communication node, the scheduling message indicating a duration of a shortened communication sub-frame, the duration shortened communication sub-frame being based on a time shift between a first time reference of the first communication device and a second time reference of a second communication device, the duration of the shortened communication sub-frame being smaller than a duration of a regular communication sub-frame; and

perform at least one of transmitting data to the communication node and receiving data from the communication node during the shortened communication sub-frame.

29. The first communication device of claim 28 , wherein the scheduling message further comprises at least one of:

an ending time of the shortened communication sub-frame;

a starting time of the shortened communication sub-frame; and

a time offset of the shortened communication sub-frame.

30. The first communication device of claim 28 , wherein the duration of the shortened communication sub-frame is equal to the time shift.

31. The first communication device of claim 28 , wherein the duration of the shortened communication sub-frame is equal to the duration of a regular communication sub-frame minus the time shift.

32. The first communication device of claim 28 , wherein the duration of the shortened communication sub-frame is equal to a smaller number of symbols than a number of symbols in a regular communication sub-frame.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2017
From: PARKVALL, STEFAN; SORRENTINO, STEFANO
To: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
Reel/Frame 042955/0228 →
CHANGE OF NAME Recorded Jul 10, 2017
From: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
To: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Reel/Frame 043140/0817 →
Continuity (2)
Continuation 14442185
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