Inter-layer communications in wireless networks including a high latency connection

• US 10,455,475 B1
• Filed: 12/20/2018
• Issued: 10/22/2019
• Est. Priority Date: 05/29/2018
• Status: Active Grant

• Current Assignee: Hughes Network Systems LLC (Echostar Corporation)
• Original Assignee: Hughes Network Systems LLC (Echostar Corporation)
• Inventors: Ahluwalia, Sandeep, Ravishankar, Channasandra, Barnett, Charles
• Primary Examiner(s): Obayanju, Omoniyi
• Application Number:
  US16/228,662
• Time in Patent Office: 306 Days
• CPC Class Codes: H04B 7/185 Space-based or airborne stations; Stations for satellite systemsH04B7/204 takes precedence
• CPC Class Codes: H04B 7/18558 Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
• CPC Class Codes: H04B 7/195 Non-synchronous stations
• CPC Class Codes: H04W 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/32 by location or mobility data, e.g. speed data
• CPC Class Codes: H04W 84/06 Airborne or Satellite Networks space-based or airborne stations H04B7/185
• CPC Class Codes: H04W 92/12 between access points and access point controllers

Abstract

A system and method for interfacing a User Equipment (UE) to a Core Network (CN) is disclosed. The method including: providing a high latency connection; providing a satellite network portal (SNP) to connect to the UE via a satellite link, wherein the SNP includes a Media Access Control (MAC) layer for managing the satellite link and a Radio Layer Control (RLC) layer of the UE; interfacing the UE to the CN with a Point of Presence (POP) including a Radio Resource Control (RRC) layer of the UE and a Packet Data Convergence Protocol (PDCP) layer of the UE; and establishing a session between the CN and the UE via the RRC layer, the PDCP layer and the RLC layer. In the method, network traffic, between the SNP and the POP, over the high latency connection has a latency greater than 10 milliseconds (ms), the session does not timeout due to the latency of the high latency connection, and the MAC layer schedules bandwidth for the establishing over the satellite link.

Claims

1. A method for interfacing a User Equipment (UE) to a Core Network (CN), the method comprising:

providing a high latency connection;

providing a satellite network portal (SNP) to connect to the UE via a satellite link, wherein the SNP comprises a Media Access Control (MAC) layer for managing the satellite link and a Radio Layer Control (RLC) layer of the UE;

interfacing the UE to the CN with a Point of Presence (POP) comprising a Radio Resource Control (RRC) layer of the UE and a Packet Data Convergence Protocol (PDCP) layer of the UE; and

establishing a session between the CN and the UE via the RRC layer, the PDCP layer and the RLC layer,

wherein

network traffic, between the SNP and the POP, over the high latency connection has a latency greater than 10 milliseconds (ms),

the session does not timeout due to the latency of the high latency connection, and

the MAC layer schedules bandwidth for the establishing over the satellite link.

2. The method of claim 1, further comprising communicating the network traffic for the session;

and handing over the satellite link from a first beam of the MAC layer to a second beam of the MAC layer.

3. The method of claim 2, wherein the handing over is due to a relative movement between the UE and a satellite.

4. The method of claim 2, wherein the handing over does not result in updates to the PDCP layer servicing the UE.

5. The method of claim 2, wherein a satellite providing the satellite link belongs to a satellite constellation that is not geosynchronous.

6. The method of claim 2, wherein the SNP comprises a first SNP and a second SNP,

the first SNP comprises the first beam,

the second SNP comprises the second beam, and

the session is moved from the RLC layer of the first SNP to the RLC layer of the second SNP.

7. The method of claim 2, wherein a satellite providing the satellite comprises a first satellite and a second satellite,

the first satellite comprises the first beam, and

the second satellite comprises the second beam.

8. The method of claim 2, wherein the establishing comprises using one or more of a parallel protocol layer configuration, a proxy-based protocol layer configuration or an access proxy-based protocol layer configuration for communications between the RRC layer and the RLC layer.

9. The method of claim 1, wherein the POP and the SNP, jointly, are configured to operate as an enhanced Node B (eNB) when connected to the CN.

10. The method of claim 1, wherein the establishing comprises using a parallel protocol layer configuration for communications between the RRC layer and the RLC layer.

11. The method of claim 1, wherein the establishing comprises using a proxy-based protocol layer for communications between the RRC layer and the RLC layer.

12. The method of claim 1, wherein the establishing comprises using an access proxy-based protocol layer for communications between the RRC layer and the RLC layer.

21. The system of claim 11, wherein the POP and the SNP, jointly, are configured to operate as an enhanced Node B (eNB) when connected to the CN.

13. A system to interface a User Equipment (UE) to a Core Network (CN), the system comprising:

a high latency connection;

a satellite network portal (SNP) to connect to the UE via a satellite link, wherein the SNP comprises a Media Access Control (MAC) layer for managing the satellite link and a Radio Layer Control (RLC) layer of the UE;

a Point of Presence (POP), to interface the UE to the CN, comprising a Radio Resource Control (RRC) layer of the UE and a Packet Data Convergence Protocol (PDCP) layer of the UE; and

a session established between the CN and the UE via the RRC layer, the PDCP layer and the RLC layer,

wherein

network traffic, between the SNP and the POP, over the high latency connection has a latency greater than 10 milliseconds (ms),

the session does not timeout due to the latency of the high latency connection, and

the MAC layer schedules bandwidth for the session over the satellite link.

14. The system of claim 13, wherein the POP and the SNP communicate the network traffic for the session, and the SNP hands over the satellite link from a first beam of the MAC layer to a second beam of the MAC layer.

15. The system of claim 14, wherein the SNP hands over due to a relative movement between the UE and a satellite.

16. The system of claim 14, wherein the SNP hand over does not result in updates to the PDCP layer servicing the UE.

17. The system of claim 14, wherein a satellite providing the satellite link belongs to a satellite constellation that is not geosynchronous.

18. The system of claim 14, wherein the SNP comprises a first SNP and a second SNP,

the first SNP comprises the first beam,

the second SNP comprises the second beam, and

the session is moved from the RLC layer of the first SNP to the RLC layer of the second SNP.

19. The system of claim 14, wherein a satellite providing the satellite link comprises a first satellite and a second satellite,

the first satellite comprises the first beam, and

the second satellite comprises the second beam.

20. The system of claim 14, wherein the session is established using one or more of a parallel protocol layer configuration, a proxy-based protocol layer configuration or an access proxy-based protocol layer configuration for communications between the RRC layer and the RLC layer.