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Paging method, device and system, CU, AMF and storage medium

A technology of paging device and paging message, which is applied in the field of communication and can solve problems such as inability to repeat paging

Active Publication Date: 2020-05-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a paging method, device, system, CU, AMF and storage medium to solve the problem in the prior art that repeated paging cannot be performed in the mode of CU / DU separation

Method used

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  • Paging method, device and system, CU, AMF and storage medium
  • Paging method, device and system, CU, AMF and storage medium
  • Paging method, device and system, CU, AMF and storage medium

Examples

Experimental program
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Embodiment 1

[0080] During the current 5G research process, possible 5G network deployments on the radio access network (RAN) side include:

[0081] Deployment structure 1:

[0082] Figure 1(A) is a typical LTE architecture. There are multiple cells under the eNB. The eNB and EPC are connected through the S1 interface, and the eNBs are connected through the X2 interface. In the connected state, the UE and the cell perform air interface data transmission and reception. , wherein multiple cells adopt the same DRX cycle.

[0083] Deployment structure 2:

[0084] As shown in Figure 1(B), the nodes on the network side, ie, the base station, are divided into CUs and DUs, and the nodes on the user side are UEs, where one CU can be connected to multiple DUs. The interface (NG) between the base station and the core network terminates at the CU, and the interface (Xn) between the base stations also terminates at the CU.

[0085] Considering that interface control signaling requires high reliabili...

Embodiment 2

[0110] In order to ensure that the CU can determine the target DU that needs to be paging for the second time, on the basis of the above embodiments, in the embodiment of the present invention, before receiving the first paging message sent by the AMF, the method further includes:

[0111] receiving information about the second DRX cycle supported by each DU sent by each DU connected to the CU;

[0112] A DRX cycle list for each DU is generated according to the received information of each second DRX cycle.

[0113] Since in the CU / DU separation mode, each CU may be connected to multiple DUs, and each DU will be configured with a different DRX cycle, in order to ensure that in this mode, the target DRX cycle for paging can be determined, the CU will itself The DRX cycles supported by each included DU are stored in the form of a list.

[0114] Each DU sends the information of the second DRX cycle supported by itself to the CU connected to it, and the CU receives the informatio...

Embodiment 3

[0122] In order to ensure that the paging of other CUs can be stopped immediately after the paging of the UE is successful, so as to avoid the waste of network resources, on the basis of the above-mentioned embodiments, in the embodiment of the present invention, the method further includes:

[0123] If the CU receives the paging response from the UE, it sends to the AMF first prompt information indicating that at least one existing DU is successfully paged, so that the AMF sends the first prompt information to other CUs to stop paging according to the first prompt information 2. Prompt information.

[0124] When the AMF performs paging for the UE, according to the location information of the UE, it may determine multiple target CUs to ensure that the UE can be quickly and successfully paged. Therefore, after the target CU controls the DU to initiate paging to the UE, if a certain target CU receives the paging response from the UE, it is considered that at least one DU contain...

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PUM

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Abstract

The invention discloses a paging method, device and system, a CU, an AMF and a storage medium, which are used for solving the problem that repeated paging cannot be performed in a CU / DU separation mode in the prior art. The method comprises the following steps: through a central unit CU, receiving a first paging message sent by a core network AMF, wherein the first paging message carries information of a first discontinuous reception DRX period of terminal UE to be paged; sending the information of the first DRX period of the UE to each distributed unit DU according to the first paging message, so that each DU pages the UE; and if the CU determines that a target DU performing second paging exists, sending a second paging message for the target DU to the target DU, the target DU not receiving a paging response for the target DU after a target DRX period corresponding to the target DU.

Description

technical field [0001] The present invention mainly relates to the technical field of communication, and in particular to a paging method, device, system, CU, AMF and storage medium. Background technique [0002] In the LTE system, the 4G mobile communication radio network (E-UTRAN) is composed of multiple 4G base stations (eNodeBs), where the eNodeB and the 4G core network (EPC) are connected through the S1 interface, and the eNodeBs are connected through the X2 interface. Now when studying 5G systems, it is considered to introduce a central unit (CU, Central Unit) for centralized control and scheduling. The radio resource control (RRC) function of the base station and some layer 2 or / and layer 1 functions are in the central node. Other functions of the base station are deployed on a distributed unit (DU, Distribute Unit). [0003] In consideration of power saving in the existing paging mechanism, a terminal (UE) adopts a Discontinuous Reception (DRX) principle when receiv...

Claims

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Application Information

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IPC IPC(8): H04W68/02H04W76/28
CPCH04W68/02H04W76/28
Inventor 刘爱娟汪颖王胡成孙建成
Owner DATANG MOBILE COMM EQUIP CO LTD