SIG MESH Profile 2.3.5 Addresses 翻译

An address may be a unicast address, a virtual address, or a group address. There is also a special value to represent an unassigned address that is not used in messages.

地址可以是单播地址、虚拟地址或组地址。还有一个特殊值表示未在消息中使用的未分配地址。

 

A unicast address is allocated to an element and always represents a single element of a node. There are 32767 unicast addresses per mesh network.

单播地址分配给一个元素，并且始终表示一个节点的单个元素。每个mesh网络有32767个单播地址。

A virtual address is a multicast address and can represent multiple elements on one or more nodes. Each virtual address logically represents a Label UUID, which is a 128-bit value that does not have to be managed centrally. Each message sent to a Label UUID includes the full Label UUID in the message integrity check value that is used to authenticate the message. To reduce the overhead of checking every known Label UUID, a hash of the Label UUID is used. There are 16384 hash values, each of which codifies a set of virtual addresses. While there are only 16384 hash values used in a virtual address, each hash value can represent millions of possible Label UUIDs; therefore, the number of virtual addresses is considered very large.

虚拟地址是一个多播地址，可以表示一个或多个节点上的多个元素。每个虚拟地址在逻辑上表示一个标签UUID，它是一个128位的值，不需要集中管理。发送到标签UUID的每个消息都包含用于验证消息的消息完整性检查值中的完整标签UUID。为了减少检查每个已知标签UUID的开销，使用标签UUID的HASH值。有16384个HAS

HG值，每个HASH值编码一组虚拟地址。虽然虚拟地址中只有16384个HASH值，但每个HASH值可以表示数百万个可能的标签uuid;因此，虚拟地址的数量被认为是非常大的。

A group address is a multicast address and can represent multiple elements on one or more nodes.There are 16384 group addresses per mesh network. There are a set of fixed group addresses that are used to  address a subset of all primary elements of nodes based on the functionality of those nodes. All other group addresses are known as dynamically assigned group addresses. There are 256 fixed group addresses and 16128 dynamically assigned group addresses.

组地址是一个多播地址，可以表示一个或多个节点上的多个元素。每个mesh网络有16384个组地址。有一组固定的组地址，用于根据节点的功能,定位节点的所有主要元素的子集。所有其他组地址都称为动态分配的组地址。固定组地址256个，动态组地址16128个。