Restriction on data communication during roaming

Patent metadata

Field	Value
Publication number	US-2025126661-A1
Application number	US-202419002608-A
Country	US
Kind code	A1
Filing date	Dec 26, 2024
Priority date	Jan 8, 2024
Publication date	Apr 17, 2025
Grant date	—

Abstract

This disclosure outlines systems, methods, and devices for roaming data restriction. A device receives a transition request frame from a non-access point multi-link device (non-AP MLD), detailing capabilities and operational parameters for establishing links as a target access point multi-link device (target AP MLD). It then sends a transition response frame to the non-AP MLD, including metadata for context transfer, such as authentication parameters, replay counters, reordering buffer states, and transmission sequence numbers. During the transition, the device communicates with the non-AP MLD as the target AP MLD, receiving forwarded data context from a current access point multi-link device (current AP MLD). It manages data transfer operations by forwarding uplink data from the current AP MLD to the non-AP MLD and transmitting downlink data directly to the non-AP MLD.

First claim

What is claimed is:

1 . A device, the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
receive a transition request frame from a non-access point multi-link device (non-AP MLD), the transition request frame including capabilities and operational parameters for establishing links with the device as a target access point multi-link device (target AP MLD); transmit a transition response frame to the non-AP MLD, the transition response frame including metadata for context transfer, wherein the metadata comprises authentication parameters, replay counters, reordering buffer states, and transmission sequence numbers; communicate with the non-AP MLD as the target AP MLD during a transition process, wherein the communication includes receiving forwarded data context from a current access point multi-link device (current AP MLD); and manage data transfer operations, based on uplink data being forwarded from the current AP MLD through the device to the non-AP MLD and downlink data being transmitted directly from the device to the non-AP MLD.

2 . The device of claim 1 , wherein the metadata further includes a duplicate receiver cache state for traffic identifiers (TIDs) associated with block acknowledgment (BA) and non-block acknowledgment (non-BA) operations.

3 . The device of claim 1 , wherein the authentication parameters comprise a pairwise master key security association (PMKSA) including a pairwise master key (PMK), a PMK identifier (PMKID), a lifetime, and an associated authentication and key management protocol (AKMP).

4 . The device of claim 1 , wherein the processing circuitry is further configured to establish a time-bound limit for completing the transition process with the non-AP MLD.

5 . The device of claim 1 , wherein the reordering buffer states include a start window (WinStartB), a buffer size (WinSizeB), and a bitmap indicating remaining data within the reordering buffer.

6 . The device of claim 1 , wherein the processing circuitry is further configured to terminate forwarding of uplink data from the current AP MLD upon completion of the transition process with the non-AP MLD.

7 . The device of claim 1 , wherein the metadata for transmission sequence numbers includes the latest packet number (PN) and sequence number (SN) to be assigned for each TID.

8 . The device of claim 1 , wherein the processing circuitry is further configured to receive indications from the non-AP MLD specifying completion of uplink and downlink data transfer for specific traffic identifiers (TIDs).

9 . A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:
receiving a transition request frame from a non-access point multi-link device (non-AP MLD), the transition request frame including capabilities and operational parameters for establishing links with the device as a target access point multi-link device (target AP MLD); transmitting a transition response frame to the non-AP MLD, the transition response frame including metadata for context transfer, wherein the metadata comprises authentication parameters, replay counters, reordering buffer states, and transmission sequence numbers; communicating with the non-AP MLD as the target AP MLD during a transition process, wherein the communication includes receiving forwarded data context from a current access point multi-link device (current AP MLD); and managing data transfer operations, based on uplink data being forwarded from the current AP MLD through the device to the non-AP MLD and downlink data being transmitted directly from the device to the non-AP MLD.

10 . The non-transitory computer-readable medium of claim 9 , wherein the metadata further includes a duplicate receiver cache state for traffic identifiers (TIDs) associated with block acknowledgment (BA) and non-block acknowledgment (non-BA) operations.

11 . The non-transitory computer-readable medium of claim 9 , wherein the authentication parameters comprise a pairwise master key security association (PMKSA) including a pairwise master key (PMK), a PMK identifier (PMKID), a lifetime, and an associated authentication and key management protocol (AKMP).

12 . The non-transitory computer-readable medium of claim 9 , wherein the operations further comprise establishing a time-bound limit for completing the transition process with the non-AP MLD.

13 . The non-transitory computer-readable medium of claim 9 , wherein the reordering buffer states include a start window (WinStartB), a buffer size (WinSizeB), and a bitmap indicating remaining data within the reordering buffer.

14 . The non-transitory computer-readable medium of claim 9 , wherein the operations further comprise terminating forwarding of uplink data from the current AP MLD upon completion of the transition process with the non-AP MLD.

15 . The non-transitory computer-readable medium of claim 9 , wherein the metadata for transmission sequence numbers includes the latest packet number (PN) and sequence number (SN) to be assigned for each TID.

16 . The non-transitory computer-readable medium of claim 9 , wherein the operations further comprise receiving indications from the non-AP MLD specifying completion of uplink and downlink data transfer for specific traffic identifiers (TIDs).

17 . A method comprising:
receiving a transition request frame from a non-access point multi-link device (non-AP MLD), the transition request frame including capabilities and operational parameters for establishing links with the device as a target access point multi-link device (target AP MLD); transmitting a transition response frame to the non-AP MLD, the transition response frame including metadata for context transfer, wherein the metadata comprises authentication parameters, replay counters, reordering buffer states, and transmission sequence numbers; communicating with the non-AP MLD as the target AP MLD during a transition process, wherein the communication includes receiving forwarded data context from a current access point multi-link device (current AP MLD); and managing data transfer operations, based on uplink data being forwarded from the current AP MLD through the device to the non-AP MLD and downlink data being transmitted directly from the device to the non-AP MLD.

18 . The method of claim 17 , wherein the metadata further includes a duplicate receiver cache state for traffic identifiers (TIDs) associated with block acknowledgment (BA) and non-block acknowledgment (non-BA) operations.

19 . The method of claim 17 , wherein the authentication parameters comprise a pairwise master key security association (PMKSA) including a pairwise master key (PMK), a PMK identifier (PMKID), a lifetime, and an associated authentication and key management protocol (AKMP).

20 . The method of claim 17 , further comprising establishing a time-bound limit for completing the transition process with the non-AP MLD.

Assignees

• Huang Po Kai
• Bravo Daniel F
• Cariou Laurent
• Ouzieli Ido

Inventors

• Huang Po-Kai
• Bravo Daniel F
• Cariou Laurent
• Ouzieli Ido

Classifications

• H04W12/0433

  Key management protocols · CPC title

• H04W8/22

  Processing or transfer of terminal data, e.g. status or physical capabilities · CPC title

• H04W12/06

  Authentication · CPC title

• H04W76/10 Primary

  Connection setup · CPC title