Abstract
A method for connection management by a user equipment includes transmitting a re-establishment request for a first connection of a first protocol layer in response to determining that a connection re-establishment condition is met, receiving a re-establishment response indicating if a re-establishment of the first connection of the first protocol layer is allowed, and completing the re-establishment of the first connection of the first protocol layer when the re-establishment of the first connection of the first protocol layer is allowed, wherein a context of a second protocol layer of the user equipment is unchanged.
Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A method for connection management, the method comprising:
transmitting, by a user equipment (UE), a re-establishment request for a first connection of a first protocol layer in response to determining that a connection re-establishment condition is met; receiving, by the UE, a re-establishment response indicating if a re-establishment of the first connection of the first protocol layer is allowed; and completing, by the UE, the re-establishment of the first connection of the first protocol layer when the re-establishment of the first connection of the first protocol layer is allowed, wherein a context of a second protocol layer of the UE is unchanged.
2. The method of claim 1, wherein the first protocol layer is a Layer 2 network layer.
3. The method of claim 1, wherein the re-establishment request for the first connection of the first protocol layer is transmitted to a first network device.
4. The method of claim 1, wherein completing the first connection of the first protocol layer comprises resetting, by the UE, a first protocol layer entity.
5. The method of claim 1, further comprising participating, by the UE, in a validity check of the UE with a first network device.
6. The method of claim 1, further comprising transmitting, by the UE, a re-establishment request for a second connection of the second protocol layer if the re-establishment of the first connection of the first protocol layer is not allowed.
7. The method of claim 6, wherein the second protocol layer is a Layer 3 network layer.
8. The method of claim 6, wherein the re-establishment request for the first connection of the second protocol layer is transmitted to a second network device.
9. The method of claim 1, wherein the connection re-establishment condition comprises at least one of a radio link failure, a lower layer failure, and a handover failure.
10. A method for connection management, the method comprising:
receiving, by a first network device, a re-establishment request for a first connection of a first protocol layer from a user equipment (UE); determining, by the first network device, if a context of the UE is available at the first network device; determining, by the first network device, if the context of the UE is retrievable from a second network device when the context of the UE is not available at the first network device; and transmitting, by the first network device, a re-establishment response indicating that a re-establishment of the first connection of the first protocol layer is allowed when the context of the UE is available at the first network device or is retrievable from the second network device when the context of the UE is not available at the first network device, wherein a context of a second protocol layer of the UE is unchanged during the re-establishment of the first connection of the first protocol layer.
11. The method of claim 10, further comprising completing, by the first network device, the re-establishment of the first connection of the first layer protocol.
12. The method of claim 10, further comprising transmitting, by the first network device, a re-establishment request for a second connection of the second protocol layer to the second network device.
13. The method of claim 10, wherein the first protocol layer is a Layer 2 network layer and the second protocol layer is a Layer 3 network layer.
14. The method of claim 10, further comprising checking, by the second network device, a validity of the UE.
15. The method of claim 14, wherein checking the validity of the UE comprises:
deriving, by the first network device, an authentication identifier for the UE in accordance with a radio resource control (RRC) integrity key and an identifier of the first network device; and determining, by the first network device, that the UE is valid when the derived authentication identifier of the UE matches an authentication identifier of the UE contained in the context of the UE.
16. A user equipment (UE) comprising:
a non-transitory memory storage comprising instructions; and one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to:
transmit a re-establishment request for a first connection of a first protocol layer in response to determining that a connection re-establishment condition is met,
receive a re-establishment response indicating if a re-establishment of the first connection of the first protocol layer is allowed, and
complete the re-establishment of the first connection of the first protocol layer when the re-establishment of the first connection of the first protocol layer is allowed, wherein a context of a second protocol layer of the UE is unchanged.
17. The UE of claim 16, wherein the non-transitory memory storage includes instructions to configure the UE to reset a first protocol layer entity.
18. The UE of claim 16, wherein the non-transitory memory storage includes instructions to configure the UE to transmit a re-establishment request for a second connection of the second protocol layer if the re-establishment of the first connection of the first protocol layer is not allowed.
19. The UE of claim 16, wherein the connection re-establishment condition comprises at least one of a radio link failure, a lower layer failure, and a handover failure.
20. A first network device comprising:
a non-transitory memory storage comprising instructions; and one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to:
receive a re-establishment request for a first connection of a first protocol layer from a user equipment (UE),
determine if a context of the UE is available at the first network device,
determine if the context of the UE is retrievable from a second network device when the context of the UE is not available at the first network device, and
transmit a re-establishment response indicating that a re-establishment of the first connection of the first protocol layer is allowed when the context of the UE is available at the first network device or is retrievable from the second network device, wherein a context of a second protocol layer of the UE is unchanged during the re-establishment of the first connection of the first protocol layer.
21. The first network device of claim 20, wherein the non-transitory memory storage includes instructions to configure the first network device to complete the re-establishment of the first connection of the first layer protocol.
22. The first network device of claim 20, wherein the non-transitory memory storage includes instructions to configure the first network device to transmit a re-establishment request for a second connection of the second protocol layer to the second network device.
23. The first network device of claim 20, wherein the first network device is a radio distributed unit (RDU), and wherein the second network device is a radio centralized unit (RCU).
Associated Portfolios
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Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.