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1. (WO2019005703) MESURES DE RETARD UNIDIRECTIONNEL (OWD) DANS DES RÉSEAUX À ACCÈS MULTIPLES DE PROCHAINE GÉNÉRATION
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CLAIMS

What is claimed is:

1. An apparatus to be employed as a network multi-access data proxy (N-MADP), the apparatus comprising:

network interface circuitry to:

send an instruction to an access network, wherein the instruction is to instruct the access network to transmit a probe request (Probe-REQ) message; and

obtain a probe acknowledgment (Probe-ACK) message from the access network based on the Probe-REQ message; and

processor circuitry communicatively coupled with network interface circuitry, wherein the processor circuitry is to generate the Probe-REQ message to include a reverse connection identifier (R-CID) field, wherein the R-CID field is to include a connection identifier of a reverse path over which the Probe-ACK message is to be received.

2. The apparatus of claim 1 , wherein the Probe-REQ message is transmitted over a forward link of a first access network, and wherein the reverse path is a reverse link of the first access network.

3. The apparatus of claim 2, wherein the forward link is a downlink (DL) channel and the reverse link is an uplink (UL) channel.

4. The apparatus of claim 2, wherein the forward link is a UL channel and the reverse link is a DL channel.

5. The apparatus of claim 2, wherein the processor circuitry is further to determine a round-trip time (RTT) measurement for the first access network based on receipt of the Probe-ACK message;

wherein the network interface circuitry is to send another instruction to instruct a second access network to transmit, over a forward link of the second access network, a second Probe-REQ message including a second R-CID field to indicate the first access network as a network over which to receive a second Probe-REQ message; and

wherein the processor circuitry is further to:

identify the second Probe-ACK message received over the reverse link of the first access network;

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determine a RTT measurement for the second access network based on receipt of the second Probe-ACK message; and

measure a one-way delay (OWD) between the forward link of the first access network and the forward link of the second access network based on the RTT measurement for the first access network and the RTT measurement for the second access network.

6. The apparatus of claim 5, wherein the first access network is a Wi-Fi network and the second access network is a long-term evolution (LTE) network.

7. The apparatus of claim 5, wherein the first access network is an LTE network and the second access network is a Wi-Fi network.

8. The apparatus of claim 2, wherein the processor circuitry is further to:

transmit, over a forward link of a second access network, a second Probe-REQ message including a second R-CID field to indicate the first access network as a network over which to receive the Probe-ACK message, wherein the Probe-ACK message includes a one-way delay (OWD) measurement between the forward link of the first access network and the forward link of the second access network.

9. The apparatus of claim 8, wherein the Probe-REQ message and the second Probe-REQ message each include a probing flag field to indicate that the OWD is to be measured.

10. The apparatus of claim 8, wherein the Probe-REQ message and the second Probe-REQ message each include a probing flag field to indicate that the Probe-ACK message is to include the OWD measurement.

11. The apparatus of claim 8, wherein the Probe-REQ message includes a sequence number associated with the Probe-REQ message, and wherein the Probe-ACK message includes the sequence number associated with the Probe-REQ message.

12. The apparatus of claim 1, wherein the N-MADP is to be implemented using: an evolved Node-B (eNB), a next-generation Node-B (gNB), a next-generation Node-B central unit (gNB-CU), a serving gateway (Serving GW), a packet data network gateway (PDN GW), a user plane function (UPF) element, or a multi-access edge computing (MEC) element.

13. One or more non-transitory computer-readable media storing instructions, that, when executed by one or more processors, cause a Network Multi-Access Data Proxy (N- MADP) device to:

send an instruction to instruct a first access network to transmit, over a forward link of the first access network, a first probe request (Probe-REQ) message that includes a reverse connection identifier (R-CID) field to indicate the first access network as a network over which to receive a first probe acknowledge (Probe- ACK) message;

identify the first Probe- ACK message received over a reverse link of the first access network;

determine a round-trip time (RTT) measurement for the first access network based on receipt of the first Probe-ACK message;

send an instruction to instruct a second access network to transmit, over a forward link of the second access network, a second Probe-REQ message including a second R-CID field to indicate the first access network as a network over which to receive a second Probe-REQ message;

identify the second Probe-ACK message received over the reverse link of the first access network;

determine a RTT measurement for the second access network based on receipt of the second Probe-ACK message; and

measure one-way delay (OWD) between the forward link of the first access network and the forward link of the second access network based on the RTT measurement for the first access network and the RTT measurement for the second access network.

14. The one or more computer-readable media of claim 13, wherein the N-MADP is to be implemented using: an evolved Node-B (eNB), a next-generation Node-B (gNB), anext-generation Node-B central unit (gNB-CU), a serving gateway (Serving GW), a packet data network gateway (PDN GW), a user plane function (UPF) element, or a multi-access edge computing (MEC) element.

15. The one or more computer-readable media of claim 13, wherein the forward link is a downlink (DL) and the reverse link is an uplink (UL).

16. The one or more computer-readable media of claim 13, wherein the forward link is a UL and the reverse link is a DL.

17. The one or more computer-readable media of claim 13, wherein the first access network is a Wi-Fi network and the second access network is a long-term evolution (LTE) network.

18. The one or more computer-readable media of claim 13, wherein the first access network is an LTE network and the second access network is a Wi-Fi network.

19. An apparatus of a user equipment (UE), the apparatus comprising:

communication circuitry to:

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receive, over a first link of a first access network, a first probe request (Probe-REQ) message that includes a reverse connection identifier (R-CID) field to indicate the first access network as a network over which to receive a probe acknowledge (Probe- ACK) message; and

receive, over a first link of a second access network, a second Probe-REQ message including a second R-CID field to indicate the first access network as a network over which to receive the Probe- ACK message; and

processor circuitry communicatively coupled to the communication circuitry to: generate a one-way delay (OWD) measurement between the first link of the first access network and the first link of the second access network; and

send an instruction to cause a first access technology to transmit the Probe-ACK message over a second link of the first access network, or the instruction to cause a second access technology to transmit the Probe-ACK message over a second link of the second access network, wherein the Probe-ACK message includes the one-way delay (OWD) measurement between the first link of the first access network and the first link of the second access network.

20. The apparatus of claim 19, wherein the first Probe-REQ message and the second Probe-REQ message each include a probing flag field to indicate that the OWD is to be measured.

21. The apparatus of any of claims 19-20, wherein the first Probe-REQ message and the second Probe-REQ message each include a probing flag field to indicate that the Probe-ACK message is to include the OWD measurement.

22. One or more non-transitory computer-readable media storing instructions, that, when executed by one or more processors, cause a Network Multi-Access Data Proxy (N-MADP) device to:

transmit, over a first link of a first access network, a probe request (Probe-REQ) message that includes a reverse connection identifier (R-CID) field to indicate the first access network as a network over which to receive a probe acknowledge (Probe-ACK) message;

identify a first Probe-ACK message received over a second link of the first access network;

identify a second Probe-ACK message received over a second link of a second access network;

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measure one-way delay (OWD) between the second link of the first access network and the second link of the second access network based on the first Probe-ACK message and the second Probe-ACK message.

23. The one or more computer-readable media of claim 22, wherein the Probe-REQ message includes a probing flag field to indicate that the first Probe-ACK message and the second Probe-ACK message are to be transmitted simultaneously.

24. The one or more computer-readable media of any of claims 22-23, wherein the N-MADP is to be implemented using: an evolved Node-B (eNB), a next-generation Node-B (gNB), a next-generation Node-B central unit (gNB-CU), a serving gateway (Serving GW), a packet data network gateway (PDN GW), a user plane function (UPF) element, or a multiaccess edge computing (MEC) element.

25. The one or more computer-readable media of any of claims 22-24, wherein to measure the OWD between the second link of the first access network and the second link of the second access network, execution of the instructions is to cause the N-MADP device to:

determine a round-trip time (RTT) measurement for the first access network based on receipt of the first Probe-ACK message;

determine a round-trip time (RTT) measurement for the second access network based on receipt of the second Probe-ACK message;

determine the one-way delay (OWD) between the second link of the first access network and the second link of the second access network based on a difference between the RTT measurement for the first access network and the RTT measurement for the second access network.