Method and device for communication between network entities in cloud LAN environment

Patent metadata

Field	Value
Publication number	US-11653396-B2
Application number	US-202117497580-A
Country	US
Kind code	B2
Filing date	Oct 8, 2021
Priority date	May 12, 2017
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

The present disclosure relates to a research that has been conducted with the support of the “Cross-Departmental Giga KOREA Project” funded by the government (the Ministry of Science and ICT) in 2017 (No. GK17N0100, millimeter wave 5G mobile communication system development). The present disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure may be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology.

First claim

The invention claimed is:

1. A method performed by a distributed unit (DU) in a wireless communication system, the method comprising:
transmitting, to a central unit (CU), a fronthaul interface setup request message for setting up a fronthaul interface with the CU;
receiving, from the CU, a fronthaul interface setup response message in response to the fronthaul interface setup request message;
receiving, from the CU, an update message for a control plane of the fronthaul interface, the update message including system information associated with the CU;
transmitting, to the CU, an acknowledgement message in response to the update message; and
performing a communication with -an-a user equipment (UE) based on the system information associated with the CU,
wherein the CU is associated with a radio resource control (RRC) protocol and a packet data convergence protocol (PDCP) protocol, and
wherein the DU is associated with a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical (PHY) layer.

2. The method of claim 1 , the method further comprising:
transmitting, to the CU, an uplink transfer message including an RRC container, wherein the RRC container includes an RRC message transferred from the UE to the CU.

3. The method of claim 1 , further comprising:
receiving, from the CU, a request message for a UE context;
transmitting, to the CU, a response message in response to the request message; and
performing a communication with the UE associated with the UE context,
wherein the request message includes RRC information for configuring the UE, and
wherein the RRC information includes at least one MAC layer parameter and at least one PHY layer parameter.

4. The method of claim 3 ,
wherein the request message includes general packet radio service tunnelling protocol (GTP) tunnel information for a data radio bearer (DRB), and
wherein the GTP tunnel information includes a tunnel endpoint identifier (TEID) and address information used for a user plane between the CU and the DU.

5. The method of claim 1 ,
receiving, from the CU, a downlink transfer message including an RRC container,
wherein the RRC container includes an RRC message transferred from the CU to the UE.

6. A distributed unit (DU) in a wireless communication system, the DU comprising;
a transceiver configured to transmit and receive a signal; and
at least one processor configured to:
transmit, to a central unit (CU) through the transceiver, a fronthaul interface setup request message for setting up a fronthaul interface with the CU,
receive, from the CU through the transceiver, a fronthaul interface setup response message in response to the fronthaul interface setup request message,
receive, from the CU through the transceiver, an update message for a control plane of the fronthaul interface, the update message including system information associated with the CU,
transmit, to the CU through the transceiver, an acknowledgement message in response to the update message, and
perform a communication with a user equipment (UE) based on the system information associated with the CU,

wherein the CU is associated with a radio resource control (RRC) protocol and a packet data convergence protocol (PDCP) protocol, and
wherein the DU is associated with a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical (PHY) layer.

7. The DU of claim 6 ,
wherein the at least one processor is further configured to:
transmit, to the CU through the transceiver, an uplink transfer message including an RRC container, and

wherein the RRC container includes an RRC message transferred from the UE to the CU.

8. The DU of claim 6 ,
wherein the at least one processor is further configured to:
receive, from the CU through the transceiver, a request message for a UE context,
transmit, to the CU through the transceiver, a response message in response to the request message, and
perform a communication with the UE associate with the UE context,

wherein the request message includes RRC information for configuring the UE, and
wherein the RRC information includes at least one MAC layer parameter and at least one PHY layer parameter.

9. The DU of claim 8 ,
wherein the request message includes general packet radio service tunnelling protocol (GTP) tunnel information for a data radio bearer (DRB), and
wherein the GTP tunnel information includes a tunnel endpoint identifier (TEID) and address information used for a user plane between the CU and the DU.

10. The DU of claim- 6 ,
wherein the at least one processor is further configured to:
receive, from the CU through the transceiver, a downlink transfer message including an RRC container, and

wherein the RRC container includes an RRC message transferred from the CU to the UE.

11. A method performed by a central unit (CU) in a wireless communication system, the method comprising:
receiving, from a distributed unit (DU), a fronthaul interface setup request message for setting up a fronthaul interface with the DU;
transmitting, to the DU, a fronthaul interface setup response in response to the fronthaul interface setup request message; and
transmitting, to the DU, an update message for a control plane of the fronthaul interface, the update message including system information associated with the CU,
wherein the system information associated with the CU is used for a communication with a user equipment (UE) via the DU.

12. The method of claim 11 , the method further comprising:
receiving, from the DU, an uplink transfer message including an RRC container,
wherein the RRC container includes an RRC message transferred from the UE to the CU.

13. The method of claim 11 , further comprising:
transmitting, to the DU, a request message for a UE context; and
receiving, from the DU, a response message in response to the request message,
wherein the UE context is used for a communication with the UE via the DU,
wherein the request message includes RRC information for configuring the UE, and
wherein the RRC information includes at least one MAC layer parameter and at least one PHY layer parameter.

14. The method of claim 13 ,
wherein the request message includes general packet radio service tunnelling protocol (GTP) tunnel information for a data radio bearer (DRB), and
wherein the GTP tunnel information includes a tunnel endpoint identifier (TEID) and address information used for a user plane between the CU and the DU.

15. The method of claim 11 , the method further comprising:
transmitting, to the DU, a downlink transfer message including an RRC container,
wherein the RRC container includes an RRC message transferred from the UE to the CU.

16. A central unit (CU) in a wireless communication system, the CU comprising:
a transceiver configured to transmit and receive a signal; and
at least one processor configured to:
receive, from a distributed unit (DU) through the transceiver, a fronthaul interface setup request message for setting up a fronthaul interface with the DU,
transmit, to the DU through the transceiver, a fronthaul interface setup response message in response to the fronthaul interface setup request message, and
transmit, to the DU through the transceiver, an update message for a control plane of the fronthaul interface, the update message including system information associated with the CU,

wherein the system information associated with the CU is used for a communication with a user equipment (UE) via the DU.

17. The CU of claim 16 ,
wherein the at least o

Assignees

• Samsung Electronics Co Ltd

Inventors

• Oak Jeongyeob
• Park Sejin
• Song Jisoo
• Lee Wonil

Classifications

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04W72/04

  Wireless resource allocation · CPC title

• H04W80/02

  Data link layer protocols · CPC title

• H04L69/321 Primary

  Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers · CPC title

• H04L67/10

  in which an application is distributed across nodes in the network (software deployment G06F8/60; multiprogramming arrangements G06F9/46) · CPC title