Loading patent…
AssigneeHuawei Technologies Co., Ltd.
InventorsYong Qiu, Min Huang, Ying Huang, Hongzhuo Zhang
Estimating the term…
A communication system, a network handover processing method and a network handover processing apparatus are disclosed. The method includes receiving, by a target evolution NodeB (T-eNB), identity information sent from a user equipment (UE), the identity information being allocated to the UE by a source evolution NodeB (S-eNB); and sending, by the T-eNB, parameters to the UE if identity information, matching the received identity information sent from the UE, is available in the T-eNB, wherein the parameters are allocated to the UE. The apparatus includes a receiving module and a sending module.
A method for performing a network handover process, the method comprising:
An evolved NodeB (eNB) in a communication network that is a target eNB in a handover process, the eNB comprising:
A method for performing a network handover process, the method comprising:
A user equipment configured to be in communication with a plurality of evolved NodeBs (eNBs) in a handover process, wherein at least one of the eNBs is a source eNB and at least one of the eNBs is a target eNB, the user equipment comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
For data sessions of end-to-end connection: with transfer of context information
Transmission or use of information for re-establishing the radio link: in case of hand-off failure or rejection
Connection setup: management of setup rejection or failure
Control or signalling for completing the hand-off: for data sessions of end-to-end connection
About 1 year 10 months of term left · ends 21 Aug 2028 (estimated)
The present invention relates to a wireless communication technology, and in particular, to a communication system, a network handover processing method and a network handover processing apparatus.
In evolved network architecture, the handover of an X2 interface takes place between Evolved NodeBs (eNodeBs). An eNodeB where a User Equipment (UE) is currently located is called a Source eNodeB (S-eNB). An eNodeB to which the UE is handed over is called a Target eNodeB (T-eNB). The handover is a process of handing over the UE from a cell controlled by the S-eNB to a cell controlled by the T-eNB.
The handover process in the prior art is as follows.
For a more complete understanding of the present invention, and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawing, in which:
FIG. 1 shows a first flowchart of a network handover processing method according to an embodiment of the present invention;
FIG. 2 shows a second flowchart of a network handover processing method according to an embodiment of the present invention;
The embodiments of the present invention are hereinafter described in detail with reference to the accompanying drawings.
During the handover preparation in an evolved network, if a radio link failure occurs between the S-eNB and the UE, the UE detects a cell with better signal quality and sends a cell update message to the T-eNB corresponding to the cell. If the cell previously received a handover request message sent from the UE during the handover preparation and the T-eNB stores the context of the UE, the T-eNB may send the parameters such as the air interface resource configuration information, security parameter, and C-RNTI to the UE through a cell update confirm message or other messages so that the handover process can be continued.
During the handover preparation in an evolved network, if a radio link failure occurs between the S-eNB and the UE, the UE detects a cell with better signal quality and sends a cell update message to the T-eNB corresponding to the cell. The ID information allocated by the S-eNB may be carried in the cell update message or other RRC layer access messages sent to the T-eNB. Alternatively, the cell update cause value may be carried in the cell update message or other RRC layer access messages to the T-eNB. The T-eNB checks whether identity information, matching the received identity information sent from the UE, is available in the T-eNB, if identity information is available in the T-eNB, it indicates that the context of the UE does exist in the T-eNB. In this case, the T-eNB delivers the relevant radio parameter information, security parameter, and C-RNTI to the UE. The handover process is continued. The specific process is described below with reference to FIG. 1.