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A wireless access network system and centralized unit

A wireless access network and centralized unit technology, applied in the field of communication, can solve the problem of no clear division of CU and DU functions, and achieve the effect of improving QOE and flexible deployment

Active Publication Date: 2022-04-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a wireless access network system and a centralized unit to solve the problem in the prior art that there is no measure to clearly divide the functions of CU and DU

Method used

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  • A wireless access network system and centralized unit
  • A wireless access network system and centralized unit
  • A wireless access network system and centralized unit

Examples

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no. 1 example

[0026] An embodiment of the present invention provides a wireless access network system, such as figure 2 As shown, the wireless access network system includes a centralized unit CU and a distributed unit DU. Among them, the CU includes a control plane unit (referred to as CU-C) and a user plane unit (abbreviated as CU-U); the control plane unit is used to process the control plane protocol, and the user plane unit is used to process the user plane protocol; the DU is used to process Low-level protocols other than those handled by the CU. in, figure 2 Communication is possible between the various units that have a connection relationship shown in .

[0027] It is worth noting that in this embodiment, CU-C and CU-U can be deployed separately / independently from DU, that is, CU-C and DU can be located in different physical locations, and CU-U and DUs can originate from different physical locations.

[0028] In a specific example, for option 1 (option 1) of the CU / DU archite...

no. 2 example

[0032]This embodiment provides a centralized unit, that is, a CU in a RAN system, and the centralized unit is divided into a control plane unit (CU-C) and a user plane unit (CU-U). Wherein, the control plane unit is used for processing the control plane protocol, and the user plane unit is used for processing the user plane protocol.

[0033] In a specific example, the CU-C is used to process the PDCP signaling bearer, the radio resource management RRM protocol and the radio resource control RRC protocol, and the user plane unit is used to process the PDCP data bearer; on this basis, the At least one of the RLC protocol, the MAC protocol and the PHY protocol is allocated to be processed by the CU-U.

[0034] The solution provided by the embodiment of the present invention not only provides flexible segmentation and flexible deployment between CU and DU, but also can obtain the benefits of separating the control plane and the user plane, which meets the diverse service requirem...

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Abstract

The present invention provides a wireless access network system and a centralized unit to solve the problem that there is no measure for clearly dividing the functions of CU and DU in the prior art. The system includes: a centralized unit CU and a distributed unit DU; , the CU includes a control plane unit and a user plane unit; the control plane unit is used to process the control plane protocol, and the user plane unit is used to process the user plane protocol. This solution not only provides flexible segmentation and flexible deployment between CU and DU, but also can obtain the benefits of separating the control plane and user plane, which meets the diverse business requirements of 5G and improves the QOE of users.

Description

technical field [0001] The invention relates to the communication field, in particular to a wireless access network system and a centralized unit. Background technique [0002] In terms of 5G RAN (Radio Access Network, wireless access network) architecture, 3GPP passed the CU / DU (Central Unit, centralized unit / Distributed Unit distributed unit) architecture solution, based on the E-UTRA protocol stack. The function split (segmentation), the segmentation method is as follows figure 1 shown. Through flexible splitting of RAN functions, various and varied 5G service requirements can be better met; network construction costs and operating costs can also be saved, and better collaboration and coordination between cells and DUs can be achieved , improve system capacity and spectrum efficiency, better manage load, and optimize performance. [0003] CU and DU are two independent logical units that can be deployed independently. The CU is an interface anchor point between the acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/10H04W36/12H04W36/16
CPCH04W36/10H04W36/12H04W36/165H04W36/16
Inventor 徐岱郑涛袁知贵姚强
Owner ZTE CORP
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