Policy provisioning at a user equipment (ue)

Patent metadata

Field	Value
Publication number	US-2019116520-A1
Application number	US-201816158206-A
Country	US
Kind code	A1
Filing date	Oct 11, 2018
Priority date	Oct 15, 2017
Publication date	Apr 18, 2019
Grant date	—

Abstract

Aspects of the disclosure relate to a method of operating a user equipment for wireless communication with a network. In some aspects, the UE establishes a connection to a network and obtains a control plane message from the network. The control plane message may include one or more types of policy information if a size of the one or more types of policy information is less than or equal to a maximum payload size of the control plane message, or information indicating at least a network location from where the one or more types of policy information may be obtained by the UE over a user plane if the size of the one or more types of policy information is greater than the maximum payload size of the control plane message, or a combination thereof. Other aspects, embodiments, and features are also claimed and described.

First claim

What is claimed is:

1 . A method of wireless communication, comprising:
establishing a connection to a network; and obtaining, at a user equipment (UE), a control plane message from the network, the control plane message comprising:
one or more types of policy information if a size of the one or more types of policy information is less than or equal to a maximum payload size of the control plane message, or
information indicating at least a network location from where the one or more types of policy information may be obtained by the UE over a user plane if the size of the one or more types of policy information is greater than the maximum payload size of the control plane message, or
a combination thereof.

2 . The method of claim 1 , further comprising:
updating, at the UE, at least one policy based on the one or more types of policy information.

3 . The method of claim 1 , wherein the one or more types of policy information comprises a public land mobile network (PLMN)/radio access technologies (RATs) list, a UE route selection policy (URSP), an access network discovery and selection policy (ANDSP), one or more mobility restrictions, a quality of service (QoS) policy, or some combination thereof.

4 . The method of claim 1 , wherein the control plane message comprises a non-access stratum (NAS) transport message.

5 . The method of claim 1 , wherein the control plane message is obtained from a home public land mobile network (HPLMN) or from a visited home public land mobile network (VPLMN).

6 . The method of claim 2 , wherein the network location comprises a uniform resource locator (URL), and wherein the updating the at least one policy comprises:
establishing an Internet Protocol (IP) connection to a server using the URL, and obtaining the one or more types of policy information from the server via the IP connection.

7 . The method of claim 1 , wherein the control plane message is provided by a server that implements a policy control function (PCF) in the network.

8 . The method of claim 1 , wherein the UE has roamed to a visited home public land mobile network (VPLMN), and wherein the one or more types of policy information includes a public land mobile network (PLMN)/radio access technologies (RATs) list provided by a home public land mobile network (HPLMN), the method further comprising:
verifying, at the UE, an integrity of the contents of the control plane message; updating, at the UE, at least one policy based on the one or more types of policy information if the verification is successful; and obtaining a different PLMN/RAT list if the verification is not successful.

9 . The method of claim 8 , wherein verifying the integrity of the contents of the control plane message comprises:
obtaining a message authentication code (MAC) from a MAC field in a payload information element (IE) of the control plane message; and using the obtained MAC to determine whether the contents of the control plane message have been modified.

10 . An apparatus for wireless communication with a network, comprising:
a processor; a transceiver communicatively coupled to the processor; and a memory communicatively coupled to the processor, wherein the processor is configured to:
establish a connection to the network; and
obtain a control plane message from the network, the control plane message comprising:
one or more types of policy information if a size of the one or more types of policy information is less than or equal to a maximum payload size of the control plane message, or
information indicating at least a network location from where the one or more types of policy information may be obtained by the apparatus over a user plane if the size of the one or more types of policy information is greater than the maximum payload size of the control plane message, or
a combination thereof.

11 . The apparatus of claim 10 , wherein the processor is further configured to:
update at least one policy based on the one or more types of policy information.

12 . The apparatus of claim 11 , wherein the network location comprises a uniform resource locator (URL), and wherein the processor configured to update the at least one policy is further configured to:
establish an Internet Protocol (IP) connection to a server using the URL, and obtain the one or more types of policy information from the server via the IP connection.

13 . The apparatus of claim 10 , wherein the one or more types of policy information comprises a public land mobile network (PLMN)/radio access technologies (RATs) list, a UE route selection policy (URSP), an access network discovery and selection policy (ANDSP), one or more mobility restrictions, a quality of service (QoS) policy, or some combination thereof.

14 . The apparatus of claim 10 , wherein the apparatus has roamed to a visited home public land mobile network (VPLMN), and wherein the one or more types of policy information includes a public land mobile network (PLMN)/radio access technologies (RATs) list provided by a home public land mobile network (HPLMN), wherein the processor is further configured to:
verify an integrity of the contents of the control plane message; update at least one policy based on the one or more types of policy information if the verification is successful; and obtain a different PLMN/RAT list if the verification is not successful.

15 . The apparatus of claim 14 , wherein the processor configured to verify the integrity of the contents of the control plane message is further configured to:
obtain a message authentication code (MAC) from a MAC field in a payload information element (IE) of the control plane message; and use the obtained MAC to determine whether the contents of the control plane message have been modified.

16 . The apparatus of claim 10 , wherein the control plane message is provided by a server that implements a policy control function (PCF) in the network.

17 . A method of wireless communication, comprising:
establishing, at a user equipment (UE), a connection to a server based on a network location preconfigured at the UE; obtaining one or more types of policy information from the server; and updating, at the UE, at least one policy based on the obtained one or more types of policy information.

18 . The method of claim 17 , wherein the UE is configured to update the at least one policy if the UE is roaming in a visited home public land mobile network (VPLMN).

19 . The method of claim 17 , wherein the one or more types of policy information comprises a public land mobile network (PLMN)/radio access technologies (RATs) list, a UE route selection policy (URSP), an access network discovery and selection policy (ANDSP), one or more mobility restrictions, a quality of service (QoS) policy, or some combination thereof.

20 . The method of claim 17 , wherein the control plane message comprises a non-access stratum (NAS) transport message.

21 . The method of claim 17 , wherein the control plane message is obtained from a home public land mobile network (HPLMN) or from a visited home public land mobile network (VPLMN).

22 . The method of claim 17 , wherein the network location comprises a uniform resource locator (URL), and wherein the connection comprises an Internet Protocol (IP) connection.

23 . The method of claim 17 , wherein the control plane message is provided by a server implementing a policy control function (PCF) in the

Assignees

• Qualcomm Inc

Inventors

• Chaponniere Lenaig Genevieve
• Abraham Santosh
• Faccin Stefano
• Cheng Hong
• Zisimopoulos Haris
• Griot Miguel

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W28/06 Primary

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title

• H04W4/20

  Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel · CPC title