WLAN与3GPP互通技术研究

介绍了WLAN与3GPP互通的背景,I-WLAN的应用场景及典型的网络架构,WLAN与3GPP互通的关键技术,I-WLAN相关的国际、国内标准及3GPP的最新研究进展。     

基于全IP的3GPP-WLAN网络互通体系结构

3GPP-WLAN互通是目前无线互联网的研究重点之一,目前,3GPP及其它相关组织正在积极制定3GPP-WLAN互通的规范.本文介绍了3GPP WLAN互通的基本架构、新增功能实体和接口的功能,并在最后给出了实例的信令流程.     

3G与WLAN网络互通技术及方案

主要介绍了目前3GPP R6中3G与VLAN互通标准化的进展情况，阐述了3GPP所提出的六种互通方案，重点介绍并分析了针对其中两种方案所提出的组网架构，并对这两种方案做了比较和展望。     

演进的3GPP系统架构分析

3GPP在对无线接入演进的同时,相应地对系统架构进行了演进,称为SAE。SAE是一个全新的核心网络架构,它采用全分组IP方式,支持异构网络的接入和互通,具有良好的兼容性,同时简化了功能实体。对SAE的架构结构、功能实体以及功能实体之间的接口进行了介绍,同时对SAE中的策略控制计费控制技术以及接入系统之间的切换技术进行了分析。     

Non-3GPP对EPS的安全接入研究

Non-3GPPN络安全接入EPS是未来异构网络融合的重要基础。本文介绍了Non-3GPPN络接入时EPS系统的安全架构、可信的Non-3GPP网络接入EPS系统的认证机制、密钥协商流程等。     

WiMAX与3GPP网络的互通互联

文章重点讨论了WiMAX和3GPP网络的互通互联关系和方案。首先从总体上阐述了WiMAX网络的漫游和互通的功能需求,然后分析了3GPP及WiMAX论坛正在讨论的互联互通方案,最后总结了当前WiMAX和3GPP网络的互通互联研究所关注的焦点。     

WiMAX与3GPP系统分组域互通研究

文章主要研究了WiMAX与3GPP系统的分组域之间如何互通,分析了现有的I-WLAN和EPC/SAE方案,提出了一种可应用于现网的基于移动IP并锚定于家乡代理(HA)的互通方案,介绍了该方案的架构、网元、接口和协议。最后,结合两个实例说明了当终端在WiMAX和3GPP网络之间切换时,该方案如何保证分组业务的连续性。     

WiMAX与3GPP系统分组域互遇研究

文章主要研究了WiMA×与3GPP系统的分组域之间如何互通,分析了现有的1-WLAN和EPC/SAE方案,提出了一种可应用于现网的基于移动IP并锚定于家乡代理(HA)的互通方案,介绍了该方案的架构、网元、接口和协议.最后,结合两个实例说明了当终端在WiMA×和3GPP网络之间切换时,该方案如何保证分组业务的连续性.     

UMTS与WLAN之间的IMS互通

在UMTSRelease5中,3GPP指定IMS提供多媒体业务。3GPP与LAN网络在业务层的连接需要IMS与WLAN功能之间的互通。文章在研究了几种互连情况和IMS的主要功能后,分析了3GPP与WLAN之间如何支持不同业务层的互通。重点对使用SIP协议(提供带有QoS和AAAC(AAA和计费)支持)的会话协商层的互通进行了论述。     

3GPP网络架构演进分析

3G系统的长期演进发展是业界研究的一个热点.本文对3GPP组织制定的网络架构演进进行了分析,包括网络架构的演进需求、SAE架构中的功能实体和接口以及SAE的候选方案,另外对SAE中存在的问题也进行了深入的分析.     

An access-aware pricing strategy for the evolved packet system

The evolved packet system (EPS) integrates third generation partnership project (3GPP) and non-3GPP wireless access networks to provide mobile users with ubiquitous access to a diverse set of multimedia services. As we know, 3GPP and non-3GPP access networks differ significantly with respect to bandwidth capacity, coverage range, and service cost. It is crucial to enable efficient load balancing between 3GPP and non-3GPP access networks to improve resource utilization, and still maximize revenue generation. From an economic point of view, pricing plays an important role in achieving load balancing in the EPS. This paper proposes an access-aware pricing strategy for the EPS to achieve load balancing between 3GPP and non-3GPP access networks and to maximize revenue generation for network operators. In addition, this paper develops an analytical model for the system using the proposed access-aware pricing strategy. With the analytical model, this paper also proposes an iterative method for determining the optimal pricing that maximizes revenue generation in the EPS. The analytical model is verified by simulation.     

Dynamic network composition for beyond 3G networks: a 3GPP viewpoint

The 3GPP network specification is currently undergoing major updates toward beyond 3G. The evolved 3GPP network will support interworking with multiple including non-3GPP - radio access networks, and support mobility between them. It will furthermore support personal area networks and moving networks. Generally, 3GPP is moving in the direction of an all-IP network. This article gives an overview of current beyond 3G trends in 3GPP, and particularly introduces a new 3GPP study item on network composition. The concept of network composition was developed by the EU project Ambient Networks. Whereas 3GPP until now assumes static networking relations, network composition addresses a dynamic, generic establishment of control-plane interworking between the heterogeneous network types of today, such as 3GPP core networks, non-3GPP operator networks, heterogeneous access networks, and personal area networks     

一种WLAN与LTE网络融合方案

3GPP23.234规范中提出研究WLAN等非3GPP接入EPC的互通架构。用户终端(UE)可以通过WLAN,以S2a、S2b或S2c等接口接入EPC。文章针对安全性低和改造复杂的问题,提出WGW-S2a融合网络架构——部署WGW网元支持EAP-AKA认证报文转发并具有MAG功能,采用EAP-SIM/AKAover802.1x实现安全的统一认证,WLAN用户接入EPC时IP地址分配由PDNGW分配。在WGW-S2a融合网络架构中,WLAN网络与EPC之间的接口仍然符合3GPP标准的S2a接口。     

WCDMA和WLAN的联合建设

本介绍了可能的WLAN同3GPP互联的场景，以及互联中要涉及到的网络结构、网元的功能及网络运行必不可少的漫游、鉴权、计费功能的实现。     

UMTS-WLAN异构网络互联的方案研究

通用移动通信系统(UMTS)为移动数据用户提供了较广阔的覆盖范围,而无线局域网(WLAN)能在局部热点地区提供较高的接入带宽.两种网络的显著优势能够相互结合,为处于异构网络覆盖地区的用户提供网间无缝连接.本文总结了目前UMTS-WLAN互联的三种实施方案:移动IP、互联网关和仿真器.在分别介绍三种方案的体系架构、互联机制和切换流程后从互联层次、信令和数据流向、对现有网络的改造、安全认证机制及用户管理方式等不同层面分析三种方案的特点.     

统一用户数据库的分析和设计

统一用户档案（GUP）是3GPP定义的一种融合用户数据访问框架,它的基本出发点是以用户为中心,解决多种不同网络、业务的用户数据统一访问的问题。本文以3GPP的研究为基础,结合中国运营商网络的特点,对同一用户档案（GUP）在中国运营商网络中的落地进行了分析,提出了统一用户档案数据库（GUPP）的架构、数据定义,并对实现难点进行了剖析。     

Seamless integration of mobile WiMAX in 3GPP networks

As the wireless industry makes its way to the next generation of mobile systems, it is important to engineer solutions that enable seamless integration of emerging 4G access technologies within the currently deployed and/or evolved 2G/3G infrastructures. In this article we address a specific case of such a seamless integration, that of mobile WiMAX in evolved 3GPP networks. In this context we investigate the architecture and the key procedures that enable this integration, and we also introduce a novel handover mechanism that enables seamless mobility between mobile WiMAX and legacy 3GPP access, such as UTRAN or GERAN. The core characteristic of this novel handover mechanism is that mobile terminals do not need to support simultaneous transmission on both WiMAX and 3GPP accesses; therefore, it mitigates the RF coexistence issues that exist otherwise and improves handover performance. In addition, we provide a brief overview of mobile WiMAX and the evolved 3GPP network technologies, and we set the appropriate background material before presenting our proposed handover mechanism. Our main conclusion is that integrating mobile WiMAX in evolved 3GPP networks is a compelling approach for providing wireless broadband services, and mobility across WiMAX and 3GPP access can become seamless and efficient with no need for mobile terminals to support simultaneous transmission on both types of access.     

Network aspects of integrating 5G and satellite communication

Since 2017, 3rd Generation Partnership Program (3GPP) is working on integration of satellite communication in 3GPP. This paper discusses the results of the work on service and network architecture aspects in 3GPP Technical Specification Group (TSG) Service and System Aspects (SA) and 3GPP TSG Core Networks and Terminals (CT). This paper does not discuss radio aspects as are specified in 3GPP TSG radio access network (RAN). 3GPP first specified requirements and use cases for satellite access. Subsequently, architecture and protocol specifications were created for integration scenarios, direct access, network selection, mobility management, and satellite backhaul with quality of service (QoS). Also, impacts of regulatory aspects on satellite integration have been discussed in 3GPP. With the completion of Release 17, 3GPP specifications are now ready for implementation of integrated 5G satellite networks. 3GPP will continue with further development of satellite integration in Release 18 and Release 19.     

异构网络的资源控制体系

TISPAN从固定接入角度出发,提出了资源接纳控制子系统来解决NGN承载网的QoS问题;3GPP则从移动接入角度出发,在最新的3GPPR7草案中,把R6版中的策略控制功能和基于流的计费功能合并,提出了策略控制和计费。随着固定移动的融合,资源接纳控制体系在架构和接口上的不一致性对NGN相关设备制造和网络实施将产生重大的影响。目前,3GPP和TISPAN都开展了Gq＇／Rx参考点融合的研究课题。下一代移动网络论坛提出了和谐PCC的概念和需求,即异构网络的协同资源控制体系架构,代表了异构网络的资源控制技术和体系的演进方向。