skill pcell如何设置layer层次

Posted 2023-05-11

参考技术A 打开设置选择控制面板找到画质选择layer
Pcell也就是参数化单元，可以看作是一种可编程单元，允许用户通过定义参数创建实例。在调用Pcell的过程中为参数赋不同的值，可以创建不同的Pcell实例。
比如，可以在版图中调用PDK中的MOS器件，然后根据设计参数修改MOS器件的W、L、是否添加Gate过孔、是否添加源漏连接等，这些都可以通过Pcell实现。
可以使用skill程序创建Pcell，也可以使用VirtuosoPcell应用程序以图形方式创建Pcell.
使用skill程序创建Pcell更加灵活，也是Cadence推荐的Pcell创建方式，使用VirtuosoPcell应用程序以图形方式创建Pcell更加方便，并且需要很少的skill编程基础，适合初学者，往往也能满足大部分的设计需求，以下内容都是以图形化方式创建Pcell.

5G NR 中的 PCell / SCell / PScell / SpCell

文章目录

• • • • 四种 cell 之间的区别和联系
      • 两种 Cell Group - Master & Secondary
      • 两种 Node - Master & Secondary

四种 cell 之间的区别和联系

abbre	name	condition	properties
PCell	Primary Cell	under MCG	* Under MCG there may be many Cells, * PCell is used to initiate the initial access. * As the name implies, PCell is the most “main” cell in MCG.
PSCell	Primary Secondary Cell	under SCG	* Most important cell under the SCG. * PSCell Performs the initial access under the SCG
SCell	Secondary Cell	under MCG / SCG	* PCell is the cell which UE initially finds and connects to, * One or more SCells can be configured once the UE is in Connected mode. * SCell can be rapidly activated or deactivated to meet the variations in the traffic Pattern.
SpCell	Special Cell		* SpCell = PCell + PSCell * a lot of signaling is only sent on PCell and PSCell. * SpCell supports PUCCH transmission and contention based Random access. * It is always activated

两种 Cell Group - Master & Secondary

abbre	name	properties	primary cell
MCG	Master Cell group	group of serving cells associated with the Master Node comprising of the PCell and optionally one or more SCells	PCell
SCG	Secondary Cell group	SpCell = PCell + PSCell group of serving cells associated with the Secondary Node comprising of the SpCell (PSCell) and optionally one or more SCells.	PSCell

两种 Node - Master & Secondary

Name	Tags
Master Node	The node (radio access node) that provides the control plane connection to the core network in case of multi radio dual connectivity (MR-DC).
Secondary Node	The radio access node, with no control plane connection to the core network, providing additional resources to the UE in case of MR-DC."

• Under MCG: The PCell under MCG and the SCell under MCG are united together by Carrier Aggregation (CA) technology.
• Under SCG: The PSCell under SCG and SCell under SCG are united by CA technology.

Summary:
MCG and SCG are concepts under DC (Dual connectivity). It can be simply understood that the group where the initiates random access (RACH) is performed is the MCG. If there is no dual link, there is no concept of MCG and SCG. It can also be understood that when link is performed, the cell group corresponds to the MCG.

这是参考文章 表示感谢 !