Pre-Emption and Resource Allocation Prioritization for D2D Communications

Patent metadata

Field	Value
Publication number	US-2016150520-A1
Application number	US-201414399359-A
Country	US
Kind code	A1
Filing date	Aug 11, 2014
Priority date	Aug 11, 2014
Publication date	May 26, 2016
Grant date	—

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.

First claim

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.

2 . (canceled)

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.

7 . (canceled)

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.

9 .- 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.

16 . (canceled)

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

Assignees

• Ericsson Telefon Ab L M

Inventors

• Fodor Gabor
• Belleschi Marco
• Kazmi Muhammad

Classifications

• H04W72/56

  based on priority criteria · CPC title

• H04W72/51 Primary

  based on terminal or device properties · CPC title

• H04W72/10

  Electricity · mapped topic

• H04W28/0215

  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 title

• H04W72/048 Primary

  Electricity · mapped topic