1. Towards_Massive_Connectivity_Support_for_Scalable_mMTC_Communications_in_5G_Networks
时间: 2023-10-16 17:07:05 浏览: 47
该论文提出了在5G网络中支持大规模物联网通信的解决方案。随着物联网设备数量的增加,需要一种能够支持连接大量设备的通信机制。作者提出了一种基于突发传输的机制,称为Bursty Random Access (BRA)。该机制允许设备随机访问网络,并使用短时间突发传输的方式发送数据。该机制还使用了一种称为Successive Interference Cancellation (SIC)的技术,用于解决传输冲突的问题。通过模拟实验,作者证明了该机制的有效性和可扩展性。
总的来说,该论文提供了一种有前途的解决方案,可以支持大规模物联网通信,并且在5G网络中具有很好的应用前景。
相关问题
BigDecimal.ROUND_FLOOR
ROUND_FLOOR is a rounding mode constant in the BigDecimal class in Java. It represents rounding towards negative infinity. When the ROUND_FLOOR mode is used, the value will be rounded down to the next whole number or the nearest lower value.
Here's an example of how to use ROUND_FLOOR with BigDecimal in Java:
```java
import java.math.BigDecimal;
import java.math.RoundingMode;
public class Main {
public static void main(String[] args) {
BigDecimal value = new BigDecimal("3.14159");
BigDecimal roundedValue = value.setScale(2, RoundingMode.FLOOR);
System.out.println("Rounded value: " + roundedValue);
}
}
```
Output:
Rounded value: 3.14
In this example, the value 3.14159 is rounded down to 3.14 using the ROUND_FLOOR mode.
string.find_last_of
As an AI language model, I don't know which programming language you are referring to. However, I can explain the general concept of the "find_last_of" function.
In many programming languages, "find_last_of" is a string function that returns the index of the last occurrence of a character or substring in a string. It searches the string from the end towards the beginning until it finds the specified character or substring. If the character or substring is not found, it returns a special value such as -1.
For example, in Python, the "find_last_of" function is called "rfind". Here is an example of how to use it:
```
string = "hello world"
index = string.rfind("o")
print(index) # prints 7
```
In this example, the "rfind" function returns the index of the last occurrence of the letter "o" in the string "hello world", which is 7.
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