Method for processing medium access control entity, UE and communication system

Patent metadata

Field	Value
Publication number	US-10880872-B2
Application number	US-201916454630-A
Country	US
Kind code	B2
Filing date	Jun 27, 2019
Priority date	Apr 11, 2013
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A method for processing a medium access control entity, UE and a communication system. The method includes: establishing a corresponding medium access control entity by UE for a second connectivity, so that there exists dual connectivity between the UE and network side including a first connectivity and the second connectivity; wherein the medium access control entity of the second connectivity at least includes a multiplexing or de-multiplexing module and a logic channel prioritization module.

First claim

What is claimed is:

1. A method for processing a medium access control (MAC) entity, comprising:
establishing, by a User Equipment (UE), a corresponding MAC entity for a second connectivity, so that there exists dual connectivity between the UE and network side comprising a first connectivity and the second connectivity,
wherein PDCP entity and RLC entity both exist in the first and second connectivity or PDCP entity and RLC entity exist in the first connectivity, RLC entity exists in the second connectivity, and
wherein a radio resource control (RRC) exists in the first connectivity and signaling radio bearer(s) (SRB(s)) is/are always transferred via the first connectivity, while the MAC entity of the second connectivity comprises a multiplexing or de-multiplexing module, a logic channel prioritization module, a control module, a random access control module and a hybrid automatic repeat request module; and
releasing, by the UE, all radio resources related to the second connectivity, stopping timers related to the second connectivity and flushing hybrid automatic repeat request (HARQ) of the MAC entity of the second connectivity when the UE receives an instruction for releasing the second connectivity.

2. The method according to claim 1 , wherein the method further comprises:
releasing, by the UE, the MAC configuration of the second connectivity when the UE receives an instruction for releasing the second connectivity.

3. The method according to claim 1 , wherein the method further comprises:
performing, by the UE, an operation leaving a connected state instead of when the UE receives an instruction for releasing the second connectivity.

4. A User Equipment (UE), comprising:
a receiver configured to receive an instruction for releasing a second connectivity; and
processor circuitry configured to establish a corresponding medium access control (MAC) entity for the second connectivity, so that there exists dual connectivity between the UE and network side comprising a first connectivity and the second connectivity,
wherein PDCP entity and RLC entity both exist in the first and the second connectivity or PDCP entity and RLC entity exist in the first connectivity, RLC entity exists in the second connectivity, and
wherein a radio resource control (RRC) exists in the first connectivity and signaling radio bearer(s) (SRB(s)) is/are always transferred via the first connectivity, while the MAC entity of the second connectivity comprises a multiplexing or de-multiplexing module, a logic channel prioritization module, a control module, a random access control module and a hybrid automatic repeat request module,
the processor circuitry further configured to stop timers related to the second connectivity, to release all radio resources related to the second connectivity and to flush hybrid automatic repeat request (HARQ) of the MAC entity of the second connectivity.

5. The UE according to claim 4 , wherein the processor circuitry is further configured to release the MAC configuration of the second connectivity.

6. The UE according to claim 4 , wherein the processor circuitry is further configured to perform an operation leaving a connected state instead of receiving an instruction for releasing the second connectivity.

7. A base station communicates with a user equipment, the base station comprising:
a transmitter configured to transmit, to the user equipment, a message including an instruction for releasing a second connectivity; and
a receiver configured to receive a data from the user equipment,

the user equipment comprising:
a receiver configured to receive an instruction for releasing the second connectivity; or
a processor configured to establish a corresponding medium access control (MAC) entity for the second connectivity, so that there exists dual connectivity between the user equipment and network side comprising a first connectivity and the second connectivity,
wherein PDCP entity and RLC entity both exist in the first and second connectivity or PDCP entity and RLC entity exist in the first connectivity, RLC entity exists in the second connectivity, and
wherein a radio resource control (RRC) exists in the first connectivity and signaling radio bearer(s) (SRB(s)) is/are always transferred via the first connectivity, while the MAC entity of the second connectivity comprises a multiplexing or de-multiplexing module, a logic channel prioritization module, a control module, a random access control module and a hybrid automatic repeat request module,
the processor further configured to stop timers related to the second connectivity, to release all radio resources related to the second connectivity and to flush hybrid automatic repeat request (HARQ) of the MAC entity of the second connectivity.

Assignees

• Fujitsu Ltd

Inventors

• Lu Yanling
• Wang Weiwei

Classifications

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04W72/569 Primary

  of the traffic information · CPC title

• H04L2101/622

  Layer-2 addresses, e.g. medium access control [MAC] addresses · CPC title

• H04W92/10

  between terminal device and access point, i.e. wireless air interface · CPC title

• H04W88/02

  Terminal devices · CPC title