LTE M2M网络的轻量级协议

Mukesh Taneja
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引用次数: 1

摘要

当设备试图连接到LTE网络时,LTE M2M设备、基站和核心网络节点交换几个协议消息。LTE附加过程包括:M2M设备与网络的相互认证、各种安全密钥的计算和会话的建立。这些过程会在LTE M2M设备上产生很高的处理开销,并且还会在LTE空中接口上产生很高的控制平面开销。由于一些LTE M2M设备可能只是偶尔发送数据,因此它们会进入睡眠(或空闲)状态以节省电力。当M2M设备从活动状态转换到睡眠状态时(反之亦然),将交换额外的LTE协议消息以用于重新身份验证和其他目的。我们提出了一种解决方案,可以减少LTE空中接口的协议开销,减少LTE M2M设备的处理开销,并允许M2M设备在更长的时间内处于睡眠模式。这可能有助于降低LTE M2M设备的能耗。我们在网络中提出了一个新的(逻辑)实体,它部分地模拟了附加过程的UE的状态(或上下文)。这个新实体由网络(运营商)控制。UE按常规方式启动Attach过程。我们拦截了LTE eNodeB附加过程的一些消息,并使用这个新的网络实体,MME, LTE eNodeB和身份验证中心执行部分附加处理。完成后,终端与网络节点之间进行相互认证。我们还将协议开销与现有协议进行了比较,并展示了该方案的优点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lightweight protocols for LTE M2M networks
LTE M2M device, base station and core network nodes exchange several protocol messages when a device tries to attach in an LTE network. LTE Attach procedure includes the following: mutual authentication of M2M device (UE) and network, computation of various security keys and session establishment. These procedures incur high processing overhead at LTE M2M devices and also create high control plane overhead across the LTE air-interface. As some LTE M2M devices may only send data sporadically, they move to sleep (or idle) state to conserve power. As an M2M device transitions from active to sleep state (or vice versa), additional LTE protocol messages are exchanged for re-authentication and other purposes. We propose a solution that reduces protocol overhead across the LTE air-interface, reduces processing overhead at LTE M2M devices and allows the M2M devices to be in sleep mode for longer duration. This potentially helps to reduce energy consumption at LTE M2M devices. We propose a new (logical) entity in the network that partially simulates state (or context) of the UE for the Attach procedure. This new entity is controlled by the network (operator). UE starts Attach procedure in the usual way. We intercept some of the messages of the Attach procedure at LTE eNodeB and do part of the Attach processing using this new network entity, MME, LTE eNodeB and Authentication Centre. UE and network nodes are mutually authenticated after that. We also compare protocol overhead with the existing protocol and show benefits of this scheme.
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