Network node and method therein for managing radio resources

• US 9,942,899 B2
• Filed: 08/16/2013
• Issued: 04/10/2018
• Est. Priority Date: 08/21/2012
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Schliwa-Bertling, Paul, Nordstrm, Eric, Sundberg, Mrten
• Primary Examiner(s): Ly, Anh-Vu
• Assistant Examiner(s): REYES ORTIZ, HECTOR E
• Application Number:
  US14/407,847
• Publication Number:
  US 20150173078A1
• Time in Patent Office: 1,698 Days
• Field of Search: None
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0058 Allocation criteria
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Method in a network node for managing radio resources. The network node is comprised in a wireless radio network. A mobile station is configured to operate in the wireless radio network. The mobile station has a maximum bandwidth for simultaneous receptions, and a first carrier list comprising carriers. The carriers are radio carriers assigned to the mobile station. The maximum bandwidth cannot envelope all the carriers in the first carrier list. The network node removes one or more carriers from the first carrier list. The removing of the one or more carriers is performed, one carrier by one carrier, until the maximum bandwidth can envelope all remaining carriers after the removing. The one or more removed carriers have a lowest priority according to a priority list. The remaining carriers comprise carriers to receive for the mobile station.

Claims

1. A method in a network node for managing radio resources, the network node being comprised in a wireless radio network wherein a mobile station configured to operate in the wireless radio network has a maximum bandwidth for simultaneous receptions and a first carrier list comprising carriers, wherein the carriers are radio carriers assigned to the mobile station, and wherein the maximum bandwidth cannot envelope all the carriers in the first carrier list, the method comprising:

removing one or more carriers from the first carrier list, which removing of the one or more carriers is performed, one carrier by one carrier, until the maximum bandwidth can envelope all remaining carriers after the removing, the one or more removed carriers having a lowest priority according to a priority list, and

which remaining carriers comprise carriers to receive for the mobile station.

2. The method of claim 1, wherein the method further comprises calculating that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, and wherein the removing one or more carriers from the first carrier list further comprises:

removing one carrier from the first carrier list, the removed carrier having the lowest priority according to the priority list, wherein the removing one carrier results in a reduced carrier list comprising all remaining carriers after the removing the carrier having the lowest priority, and

calculating if the maximum bandwidth of the mobile station can envelope all the remaining carriers in the reduced carrier list, and

when the maximum bandwidth of the mobile station cannot envelope all the remaining carriers in the reduced carrier list, the removing one or more carriers from the first carrier list further comprises removing one or more further carriers having a lowest priority from the reduced carrier list, one by one, until the network node calculates that the maximum bandwidth can envelope all the remaining carriers after the removing the one or more further carriers.

3. The method of claim 2, further comprising determining, when the maximum bandwidth can envelope all the remaining carriers after the removing one or more carriers, that all the remaining carriers after the removing one or more carriers comprise carriers to receive for the mobile station.

4. The method of claim 1, wherein the network node is one of:

a base station, a base station controller and a core network node.

5. The method of claim 4, wherein the method further comprises prioritizing the carriers in the first carrier list in a process of resource assignment to the mobile station, the prioritizing being based on one or more quantities, the prioritizing resulting in a decision comprising the priority list.

6. The method of claim 4, further comprising receiving, from the mobile station, the maximum bandwidth supported by the mobile station for simultaneous receptions.

7. The method of claim 4, further comprising signaling the priority list to the mobile station, implicitly or explicitly.

8. The method of claim 5, wherein the one or more quantities comprise one of:

an explicit list with carriers to prioritize, a Mobile Allocation Index Offset (MAIO), an allocation, an Absolute Radio Frequency Channel Number (ARFCN), and an assignment order.

9. The method of claim 3, wherein the carriers assigned to the mobile station, are assigned for a plurality of bursts in a radio block period, the plurality of bursts comprising a first burst and one or more additional bursts, and wherein the calculating that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, the removing one or more carriers from the first carrier list, and the determining are performed for the first burst and then performed for each of the one or more additional bursts.

10. A method in a mobile station for managing radio resources, the mobile station being configured to operate in a wireless radio network, the mobile station having a maximum bandwidth for simultaneous receptions and a first carrier list comprising carriers, wherein the carriers are radio carriers assigned to the mobile station, and wherein the maximum bandwidth cannot envelope all carriers in the first carrier list, the method comprising:

removing one or more carriers from the first carrier list, which removing of the one or more carriers is performed, one carrier by one carrier, until the maximum bandwidth can envelope all remaining carriers after the removing, the one or more removed carriers having a lowest priority according to a priority list, and

which remaining carriers comprise carriers to receive for the mobile station, and

proceeding with radio reception on the remaining carriers.

11. The method of claim 10, wherein the method further comprises calculating that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, and wherein the removing one or more carriers from the first carrier list further comprises:

removing one carrier from the first carrier list, the removed carrier having the lowest priority according to the priority list, wherein the removing one carrier results in a reduced carrier list comprising all remaining carriers after the removing the carrier having the lowest priority, and

calculating if the maximum bandwidth of the mobile station can envelope all the remaining carriers in the reduced carrier list, and

when the maximum bandwidth of the mobile station cannot envelope all the remaining carriers in the reduced carrier list, the removing one or more carriers from the first carrier list further comprising, removing one or more further carriers having a lowest priority from the reduced carrier list, one by one, until the network node calculates that the maximum bandwidth can envelope all the remaining carriers after the removing the one or more further carriers.

12. The method of claim 10, further comprising disabling radio reception on one or more time slots associated with the removed one or more carriers.

13. The method of claim 11, further comprising determining, when the maximum bandwidth can envelope all the remaining carriers after the removing one or more carriers, that all the remaining carriers after the removing one or more carriers comprise carriers to receive for the mobile station.

14. The method of claim 10, further comprising obtaining the priority list of carriers from a network node comprised in the wireless radio network, implicitly or explicitly wherein the network node is one of a base station, a base station controller and a core network node, wherein the carriers in the carrier list have been prioritized by the network node in a process of resource assignment to the mobile station, the prioritizing being based on one or more quantities, wherein the one or more quantities comprise one of:

an explicit list with carriers to prioritize;

a Mobile Allocation Index Offset (MAIO);

an allocation;

an Absolute Radio Frequency Channel Number (ARFCN); and

a carrier assignment order.

15. The method of claim 10, further comprising sending, to the network node, the maximum bandwidth supported by the mobile station for simultaneous receptions.

16. The method of claim 13, wherein the carriers assigned to the mobile station, are assigned for a plurality of bursts in a radio block period, the plurality of bursts comprising a first burst and one or more additional bursts, and wherein the calculating that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, and the removing one or more carriers from the first carrier list are performed for the first burst and then performed for each of the one or more additional bursts.

17. A network node for managing radio resources, the network node being configured to be comprised in a wireless radio network, wherein a mobile station configured to operate in the wireless radio network has a maximum bandwidth for simultaneous receptions and a first carrier list comprising carriers, wherein the carriers are radio carriers assigned to the mobile station, and wherein the maximum bandwidth cannot envelope all the carriers in the first carrier list, the network node comprising:

a processing circuit; and

a memory;

wherein the processing circuit and memory are configured to remove one or more carriers from the first carrier list, one carrier by one carrier, until the maximum bandwidth can envelope all remaining carriers after the removing, the one or more removed carriers having a lowest priority according to a priority list, and which remaining carriers comprise carriers to receive for the mobile station.

18. The network node of claim 17, wherein the processing circuit and memory are further configured to calculate that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, and in response to said calculating, to remove one or more carriers from the first carrier list by:

removing one carrier from the first carrier list, the removed carrier having the lowest priority according to the priority list, wherein said removing of one carrier is configured to result in a reduced carrier list comprising all remaining carriers after the removing the carrier having the lowest priority; and

calculating whether the maximum bandwidth of the mobile station can envelope all the remaining carriers in the reduced carrier list; and

responsive to determining that the maximum bandwidth of the mobile station cannot envelope all the remaining carriers in the reduced carrier list, removing one or more further carriers having a lowest priority from the reduced carrier list, one by one, until the network node calculates that the maximum bandwidth can envelope all the remaining carriers after the removing the one or more further carriers.

19. The network node of claim 18, wherein the processing circuit and memory are further configured to determine, when the maximum bandwidth can envelope all the remaining carriers after the removing one or more carriers, that all the remaining carriers after the removing one or more carriers comprise carriers to receive for the mobile station.

20. The network node of claim 17, wherein the network node is one of:

a base station, a base station controller and a core network node.

21. The network node of claim 20, wherein the processing circuit and memory are further configured to:

prioritize the carriers in the first carrier list in a process of resource assignment to the mobile station, wherein to prioritize is based on one or more quantities, and to prioritize results in a decision comprising the priority list.

22. The network node of claim 20, wherein the processing circuit and memory are further configured to receive from the mobile station the maximum bandwidth supported by the mobile station for simultaneous receptions.

23. The network node of any of claim 20, wherein the processing circuit and memory are further configured to signal the priority list to the mobile station, implicitly or explicitly.

24. The network node of claim 21, wherein the one or more quantities comprise one of:

an explicit list with carriers to prioritize;

a Mobile Allocation Index Offset (MAIO);

an allocation;

an Absolute Radio Frequency Channel Number (ARFCN); and

an assignment order.

25. The network node of claim 19, wherein the carriers assigned to the mobile station, are assigned for a plurality of bursts in a radio block period, the plurality of bursts comprising a first burst and one or more additional bursts, and wherein the processing circuit and memory are configured to calculate that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, to remove one or more carriers from the first carrier list, and to determine for the first burst and then for each of the one or more additional bursts.

26. A mobile station for managing radio resources, the mobile station being configured to operate in a wireless radio network, the mobile station having a maximum bandwidth for simultaneous receptions and a first carrier list comprising carriers, wherein the carriers are radio carriers assigned to the mobile station, and wherein the maximum bandwidth cannot envelope all carriers in the first carrier list, the mobile station comprising:

a processing circuit;

a memory; and

a receiver circuit;

wherein the processing circuit and memory are configured to;

remove one or more carriers from the first carrier list, wherein to remove the one or more carriers is configured to be performed, one carrier by one carrier, until the maximum bandwidth can envelope all remaining carriers after the removing, the one or more removed carriers having a lowest priority according to a priority list, and

which remaining carriers comprise carriers to receive for the mobile station, and

wherein the receiver circuit is configured to;

proceed with radio reception on the remaining carriers.

27. The mobile station of claim 26, wherein the processing circuit and memory are further configured to:

calculate that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list,

remove the one or more carriers from the first carrier list by;

removing one carrier from the first carrier list, the removed carrier having the lowest priority according to the priority list, wherein said removing one carrier is configured to result in a reduced carrier list comprising all remaining carriers after the removing the carrier having the lowest priority, and

calculating whether the maximum bandwidth of the mobile station can envelope all the remaining carriers in the reduced carrier list, and

responsive to determining that the maximum bandwidth of the mobile station cannot envelope all the remaining carriers in the reduced carrier list, removing one or more further carriers having a lowest priority from the reduced carrier list, one by one, until the maximum bandwidth can envelope all the remaining carriers after the removing the one or more further carriers.

28. The mobile station of any of claim 26, wherein the processing circuit and memory are configured to disable radio reception on one or more time slots associated with the removed one or more carriers.

29. The mobile station of claim 27, wherein the processing circuit and memory are configured to determine, when the maximum bandwidth can envelope all the remaining carriers after the removing one or more carriers, that all the remaining carriers after the removing one or more carriers comprise carriers to receive for the mobile station.

30. The mobile station of claim 26, wherein the processing circuit and memory are configured to obtain the priority list of carriers from a network node comprised in the wireless radio network, implicitly or explicitly, wherein the network node is one of a base station, a base station controller and a core network node, wherein the carriers in the carrier list have been prioritized by the network node in a process of resource assignment to the mobile station, the prioritizing being based on one or more quantities, wherein the one or more quantities comprise one of:

an explicit list with carriers to prioritize;

a Mobile Allocation Index Offset (MAIO);

an allocation;

an Absolute Radio Frequency Channel Number (ARFCN); and

a carrier assignment order.

31. The mobile station of claim 26, wherein the processing circuit and memory are configured to send to the network node the maximum bandwidth supported by the mobile station for simultaneous receptions.

32. The mobile station of claim 29, wherein the carriers assigned to the mobile station, are assigned for a plurality of bursts in a radio block period, the plurality of bursts comprising a first burst and one or more additional bursts, and wherein the processing circuit and memory are configured to calculate that the maximum bandwidth of the mobile station cannot envelope all the carriers in the first carrier list, to remove one or more carriers from the first carrier list, and to determine for the first burst and then for each of the one or more additional bursts.