METHOD, NETWORK DEVICE, COMPUTER PROGRAM AND COMUTER PROGRAM PRODUCT FOR DETERMINING POWER STATE PARAMETERS

• US 20150351030A1
• Filed: 11/14/2012
• Published: 12/03/2015
• Est. Priority Date: 11/14/2012
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: CSTER, Rickard, HUANG, Vincent, MATTI, Mona
• Granted Patent: US 9,510,284 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0258 controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method, performed by a network device, is disclosed for determining a set of power state parameters at least partly defining when a wireless terminal is to be in an active state or a power saving state. The method includes the steps of: detecting a present traffic type of a traffic flow to or from a wireless terminal; obtaining, from a power state parameter repository, a set of power state parameters corresponding to a plurality of traffic types, including the present traffic type; transmitting the set of power state parameters to the wireless terminal; detecting a further traffic type of a traffic flow to or from the wireless terminal; and modifying the power state parameters for the wireless terminal, only when the further traffic type does not comply with at least one expected future traffic type of the plurality of traffic types.

Claims

1. A method, performed by a network device, for determining a set of power state parameters at least partly defining when a wireless terminal is to be in an active state or a power saving state, the method comprising the steps of:

detecting a present traffic type of a traffic flow to or from a wireless terminal;

obtaining, from a power state parameter repository, a set of power state parameters corresponding to a plurality of traffic types, including the present traffic type;

transmitting the set of power state parameters to the wireless terminal;

detecting a further traffic type of a traffic flow to or from the wireless terminal; and

modifying the power state parameters for the wireless terminal, only when the further traffic type does not comply with at least one expected future traffic type of the plurality of traffic types.

2. The method according to claim 1, wherein in the step of obtaining a set of power state parameters, the plurality of traffic types is in the form of a sequence of traffic types, wherein an initial set of traffic types of the sequence of traffic types, comprises the present traffic type.

3. The method according to claim 2, wherein in the step of obtaining a set of power state parameters, the initial set of traffic types further comprises at least one previous traffic type.

4. The method according to claim 2, further comprising the step of:

for at least one initial set of traffic types, determining a sequence of most likely future traffic types.

5. The method according to claim 4, wherein in the step of determining the sequence, the sequence ends when a combined probability for the sequence, given the initial traffic type, is less than a threshold probability.

6. The method according to claim 4, wherein in the step of determining the sequence, the sequence ends at a predetermined number of traffic types.

7. The method according to claim 4, wherein in the step of determining the sequence, the sequence ends when an expected sequence duration exceeds a threshold value.

8. The method according to claim 4, wherein the step of determining a sequence comprises determining the sequence of most likely traffic types based on data associated with the wireless terminal which is associated with the traffic flow in the step of detecting a present traffic type.

9. The method according to claim 4, wherein the step of determining a sequence comprises determining the sequence of most likely traffic types based on data without discrimination on wireless terminals.

10. The method according to claim 4, wherein the step of determining a sequence comprises determining the sequence of most likely traffic types based on data for a subset of wireless terminals comprising the wireless terminal.

11. A network device arranged to determine a set of power state parameters at least partly defining when a wireless terminal is to be in an active state or a power saving state, the network device comprising:

a processor; and

a memory storing instructions that, when executed by the processor, causes the network device to;

detect a present traffic type of a traffic flow to or from a wireless terminal;

obtain, from a power state parameter repository, a set of power state parameters corresponding to a plurality of traffic types, including the present traffic type;

transmit the set of power state parameters to the wireless terminal;

detect a further traffic type of a traffic flow to or from the wireless terminal; and

modify the power state parameters for the wireless terminal, only when the further traffic type does not comply with at least one expected future traffic type of the plurality of traffic types.

12. The network device according to claim 11, wherein the plurality of traffic types is in the form of a sequence of traffic types, wherein an initial set of traffic types of the sequence of traffic types comprises the present traffic type.

13. The network device according to claim 12, wherein the initial set of traffic types further comprises at least one previous traffic type.

14. The network device according to claim 12, further comprising instructions to:

for at least one initial traffic type, determine a sequence of most likely traffic types, wherein the first traffic type is the respective initial traffic type.

15. The network device according to claim 14, wherein the instructions to determine the sequence comprise instructions to end the sequence when a combined probability for the sequence, given the initial traffic type, is less than a threshold probability.

16. The network device according to claim 14, wherein the instructions to determine the sequence comprise instructions to end the sequence at a predetermined number of traffic types.

17. The network device according to claim 14, wherein the instructions to determine the sequence comprise instructions to end the sequence when an expected sequence duration exceeds a threshold value.

18. The network device according to claim 14, wherein the instructions to determine the sequence comprise instructions to determine the sequence of most likely traffic types based on data associated with the wireless terminal which is associated with the traffic flow in the step of detecting a present traffic type.

19. The network device according to claim 14, wherein the instructions to determine the sequence comprise instructions to determine the sequence of most likely traffic types based on data without discrimination on wireless terminals.

20. The network device according to claim 14, wherein the instructions to determine the sequence comprise instructions to determine the sequence of most likely traffic types based on data for a subset of wireless terminals comprising the wireless terminal.

21. A computer program product comprising a non-transitory computer readable storage medium for determining a set of power state parameters at least partly defining when a wireless terminal is to be in an active state or a power saving state, the computer program comprising computer program code which, when run on processor of a network device, causes the network device to:

detect a present traffic type of a traffic flow to or from a wireless terminal;

obtain, from a power state parameter repository, a set of power state parameters corresponding to a plurality of traffic types, including the present traffic type;

transmit the set of power state parameters to the wireless terminal;

detect a further traffic type of a traffic flow to or from the wireless terminal; and

modify the power state parameters for the wireless terminal, only when the further traffic type does not comply with at least one expected future traffic type of the plurality of traffic types.

22. (canceled)