Pre-Emption and Resource Allocation Prioritization for D2D Communications

• US 20160150520A1
• Filed: 08/11/2014
• Published: 05/26/2016
• Est. Priority Date: 08/11/2014
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Fodor, Gabor, BELLESCHI, Marco, KAZMI, Muhammad
• Granted Patent: US 9,516,652 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 47/245 using preemption
• CPC Class Codes: H04L 47/745 Reaction in network
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 28/0215 based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• 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 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/36 for reassigning the resources associated with the released connections
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

A network node assigns resources for use in wireless communication based on priority. The network node receives, from a wireless communication device, a service request message that requests connection of a communication session. The network node determines a priority level for the requested communication session. The priority level comprises a cellular layer admission priority of whether the network node can preempt cellular resources of an existing communication session in order to admit the requested communication session on the cellular layer, and a device-to-device (D2D) layer admission priority of whether the network node can preempt D2D resources of an existing communication session in order to admit the requested communication session on the D2D layer. The network node assigns resources based at least in part on the priority level. The resources are used for D2D communication or cellular communication.

Claims

1. A network node for wireless communication between a wireless communication device and a network operable to assign resources for use in wireless communication, whereby the network node is operable to:

receive, from a wireless communication device, a service request message that requests connection of a communication session;

characterized in that the network node is further operable to

determine a priority level for the requested communication session, the priority level comprising;

a cellular layer admission priority of whether the network node can preempt cellular resources of an existing communication session in order to admit the requested communication session on the cellular layer; and

a device-to-device (D2D) layer admission priority of whether the network node can preempt D2D resources of an existing communication session in order to admit the requested communication session on the D2D layer; and

assign resources based at least in part on the priority level, wherein the resources are used for D2D communication or cellular communication.

3. The network node of claim 1, wherein the priority level further comprises:

a cellular layer pre-emptible priority of whether the network node can preempt the requested communication session in order to admit a subsequent communication session on the cellular layer; and

a D2D layer pre-emptible priority of whether the network node can preempt the requested communication session in order to admit a subsequent communication session on the D2D layer.

4. The network node of claim 3, wherein:

if the cellular layer pre-emptible priority of the requested communication session is lower than a cellular layer admission priority of a subsequent cellular communication session, the network node is allowed to preempt the requested communication session from the cellular layer to the D2D layer in order to admit the subsequent cellular communication session on the cellular layer.

5. The network node of claim 1, wherein:

if the cellular layer admission priority of the requested communication session is higher than a cellular layer pre-emptible priority of an existing cellular communication session, the network node is allowed to preempt the existing cellular communication session or an existing D2D communication session in order to admit the requested communication session on the cellular layer; and

if the D2D layer admission priority of the requested communication session is higher than a D2D layer pre-emptible priority of an existing D2D communication session, the network node is allowed to preempt the existing D2D communication session, but the network node is not allowed to preempt the existing cellular communication session, in order to admit the requested communication session on the D2D communication layer.

6. The network node of claim 1, wherein:

if the cellular layer admission priority of the requested communication session is lower than cellular layer pre-emptible priorities of existing cellular communication sessions and the D2D layer admission priority of the requested communication session is lower than D2D layer pre-emptible priorities of existing D2D communication sessions, the network node rejects the requested communication session, does not preempt the existing cellular communication sessions, and does not preempt the existing D2D communication sessions.

8. The network node of claim 1, wherein to assign the resources based at least in part on the priority level, the network node is further operable to:

monitor a monitored system resource (MSR) utilization;

determine that the MSR utilization is below a D2D threshold;

assign D2D resources to the requested communication session;

after assigning the D2D resources to the requested communication session, determine that the MSR utilization exceeds the D2D threshold and is below a cellular threshold (804);

preempt resources from existing low priority D2D communication sessions and reallocate the resources to the cellular layer; and

move the requested communication session from the D2D layer to the cellular layer if the requested communication session has high enough priority with respect to the cellular layer.

2. (canceled)

7. (canceled)

9-10. -10. (canceled)

11. A method in a network node for assigning resources for use in wireless communication, comprising:

receiving, from a wireless communication device, a service request message that requests connection of a communication session;

characterized in

determining a priority level for the requested communication session, the priority level comprising;

a cellular layer admission priority of whether the network node can preempt cellular resources of an existing communication session in order to admit the requested communication session on the cellular layer; and

a device-to-device (D2D) layer admission priority of whether the network node can preempt D2D resources of an existing communication session in order to admit the requested communication session on the D2D layer; and

assigning resources based at least in part on the priority level, wherein the resources are used for D2D communication or cellular communication.

12. The method of claim 11, wherein the priority level further comprises:

a cellular layer pre-emptible priority of whether the requested communication session can be preempted in order to admit a subsequent communication session on the cellular layer; and

a D2D layer pre-emptible priority of whether the requested communication session can be preempted in order to admit a subsequent communication session on the D2D layer.

13. The method of claim 12, further comprising:

if the cellular layer pre-emptible priority of the requested communication session is lower than a cellular layer admission priority of a subsequent cellular communication session, the network node is allowed to preempt the requested communication session from the cellular layer to the D2D layer in order to admit the subsequent cellular communication session on the cellular layer.

14. The method of any of claim 11, further comprising:

if the cellular layer admission priority of the requested communication session is higher than a cellular layer pre-emptible priority of an existing cellular communication session, the network node is allowed to preempt the existing cellular communication session or an existing D2D communication session in order to admit the requested communication session on the cellular layer; and

if the D2D layer admission priority of the requested communication session is higher than a D2D layer pre-emptible priority of an existing D2D communication session, the network node is allowed to preempt the existing D2D communication session, but the network node is not allowed to preempt the existing cellular communication session, in order to admit the requested communication session on the D2D communication layer.

15. The method of claim 11, further comprising:

if the cellular layer admission priority of the requested communication session is lower than cellular layer pre-emptible priorities of existing cellular communication sessions and the D2D layer admission priority of the requested communication session is lower than D2D layer pre-emptible priorities of existing D2D communication sessions, the network node rejects the requested communication session, does not preempt the existing cellular communication sessions, and does not preempt the existing D2D communication sessions.

17. The method of claim 11, wherein to assign the resources based at least in part on the priority level, the method further comprises:

monitoring a monitored system resource (MSR) utilization;

determining that the MSR utilization is below a D2D threshold;

assigning D2D resources to the requested communication session;

after assigning the D2D resources to the requested communication session, determining that the MSR utilization exceeds the D2D threshold and is below a cellular threshold;

preempting resources from existing low priority D2D communication sessions and reallocate the resources to the cellular layer; and

moving the requested communication session from the D2D layer to the cellular layer if the requested communication session has high enough priority with respect to the cellular layer.

16. (canceled)

18-19. -19. (canceled)

20. A wireless communication device operable to:

send a service request message to a network node, wherein the service request message requests connection of a communication session and includes a priority level indicator for the requested communication session, the priority level indicator indicating;

a cellular layer admission priority to be used by the network node for determining whether the network node can preempt cellular resources of an existing communication session in order to admit the requested communication session on the cellular layer; and

a device-to-device (D2D) layer admission priority to be used by the network node for determining whether the network node can preempt D2D resources of an existing communication session in order to admit the requested communication session on the D2D layer.

22. The wireless communication device of claim 20, wherein the priority level indicator further indicates:

a cellular layer pre-emptible priority to be used by the network node for determining whether the network node can preempt the requested communication session in order to admit a subsequent communication session on the cellular layer; and

a D2D layer pre-emptible priority to be used by the network node for determining whether the network node can preempt the requested communication session in order to admit a subsequent communication session on the D2D layer.

23. The wireless communication device of claim 22, wherein:

if the cellular layer pre-emptible priority of the requested communication session is lower than a cellular layer admission priority of a subsequent cellular communication session, the network node is allowed to preempt the requested communication session from the cellular layer to the D2D layer in order to admit the subsequent cellular communication session on the cellular layer.

24. The wireless communication device of claim 20, wherein:

if the cellular layer admission priority of the requested communication session is higher than a cellular layer pre-emptible priority of an existing cellular communication session, the network node is allowed to preempt the existing cellular communication session or an existing D2D communication session in order to admit the requested communication session on the cellular layer; and

if the D2D layer admission priority of the requested communication session is higher than a D2D layer pre-emptible priority of an existing D2D communication session, the network node is allowed to preempt the existing D2D communication session, but the network node is not allowed to preempt the existing cellular communication session, in order to admit the requested communication session on the D2D communication layer.

25. The wireless communication device of claim 20, wherein:

if the cellular layer admission priority of the requested communication session is lower than cellular layer pre-emptible priorities of existing cellular communication sessions and the D2D layer admission priority of the requested communication session is lower than D2D layer pre-emptible priorities of existing D2D communication sessions, the network node rejects the requested communication session, does not preempt the existing cellular communication sessions, and does not preempt the existing D2D communication sessions.

21. (canceled)

26. A method in a wireless communication device, comprising:

sending a service request message to a network node, wherein the service request message requests connection of a communication session and includes a priority level indicator for the requested communication session, the priority level indicator indicating;

a cellular layer admission priority to be used by the network node for determining whether the network node can preempt cellular resources of an existing communication session in order to admit the requested communication session on the cellular layer; and

a device-to-device (D2D) layer admission priority to be used by the network node for determining whether the network node can preempt D2D resources of an existing communication session in order to admit the requested communication session on the D2D layer.

27. The method of claim 26, wherein the priority level indicator further indicates:

a cellular layer pre-emptible priority to be used by the network node for determining whether the network node can preempt the requested communication session in order to admit a subsequent communication session on the cellular layer; and

a D2D layer pre-emptible priority to be used by the network node for determining whether the network node can preempt the requested communication session in order to admit a subsequent communication session on the D2D layer.

28. The method of claim 27, wherein:

if the cellular layer pre-emptible priority of the requested communication session is lower than a cellular layer admission priority of a subsequent cellular communication session, the network node is allowed to preempt the requested communication session from the cellular layer to the D2D layer in order to admit the subsequent cellular communication session on the cellular layer.

29. The method of claim 26, wherein:

if the cellular layer admission priority of the requested communication session is higher than a cellular layer pre-emptible priority of an existing cellular communication session, the network node is allowed to preempt the existing cellular communication session or an existing D2D communication session in order to admit the requested communication session on the cellular layer; and

if the D2D layer admission priority of the requested communication session is higher than a D2D layer pre-emptible priority of an existing D2D communication session, the network node is allowed to preempt the existing D2D communication session, but the network node is not allowed to preempt the existing cellular communication session, in order to admit the requested communication session on the D2D communication layer.

30. The method of claim 26, wherein:

if the cellular layer admission priority of the requested communication session is lower than cellular layer pre-emptible priorities of existing cellular communication sessions and the D2D layer admission priority of the requested communication session is lower than D2D layer pre-emptible priorities of existing D2D communication sessions, the network node rejects the requested communication session, does not preempt the existing cellular communication sessions, and does not preempt the existing D2D communication sessions.