CN1293876A - A method and system for routing calls between cellular subsystems - Google Patents

Abstract

A communication system comprising a network switching system (MSC) and a conventional subsystem (BSS), which in addition to the conventional subsystem comprises a second subsystem (WIO, BTS) accessible to a first group of mobile subscribers of the communication system. Said second subsystem comprises means (ILR, GK) for translating a number identifying a mobile subscriber in the communication system to a network address of the second subsystem (WIO, BTS) when the mobile terminal of the mobile subscriber can communicate with a base station (BTS) of the second subsystem (WIO, BTS).

Description

Translated fromChinese

一种选择蜂窝子系统之间的呼叫的路由的方法和系统A method and system for routing calls between cellular subsystems

本发明涉及一种用于电信的方法和系统，尤其涉及公用和专用通信网的综合应用。The present invention relates to a method and system for telecommunication, especially to the comprehensive application of public and private communication networks.

随着第一代数字蜂窝电话进入市场，电信业得到了迅猛的发展。如今，象GSM那样的数字移动技术尽管话音质量不如普通固定有线电话，但基本相当。除了活动性这一显著优点之外，这也是越来越多的人使用蜂窝电话的一个原因。在很多情况下，甚至在办公室内，与固定有线电话相比人们更愿使用蜂窝电话。通常，移动通信连接无论如何都比固定连接费用高。因此，在办公室外使用无线连接可能会增加公司的总话费开支，因为用户通常采用能提供最佳工作效率的通信方法。With the first generation of digital cellular phones entering the market, the telecommunications industry has grown rapidly. Today, digital mobile technologies such as GSM have almost the same voice quality as ordinary fixed-line telephones, although the voice quality is not as good. Along with the obvious advantage of mobility, this is one reason why more and more people are using cellular phones. In many cases, even within the office, people prefer to use a cellular phone over a landline. In general, a mobile communication connection is in any case more expensive than a fixed connection. As a result, using a wireless connection outside the office can add to a company's overall airtime bill, as users typically use the communication method that provides the best productivity.

另一种值得注意的趋势是IP电话系统的许多新产品的推广。IP电话是能使话音、数据和视频协同通过现有的基于IP的局域网(LAN)、广域网(WAN)和因特网的一种新兴的技术装置。IP电话具有很多优点，其中一个优点是它可以按一种实现常规电话业务(例如打长途电话)的划算(cost-efficient)方式来使用。Another noteworthy trend is the promotion of many new products of IP telephony system. IP telephony is an emerging technical device that enables voice, data and video to pass through the existing IP-based local area network (LAN), wide area network (WAN) and the Internet. IP telephony has many advantages, one of which is that it can be used in a cost-efficient manner for conventional telephony services such as making long distance calls.

过去，各机构都推广应用了单独的网络来处理传统的话音、数据和视频业务。由于各种业务有不同的传送要求，因此，这些网络安装、维护和重新配置起来代价高。而且，一般来说，对于各种网络还需要单独的终端，从用户角度来看，这增加了费用同时使事情复杂化。再者，由于这些网络物理上是不同的，因此集成起来很难，从而限制了它们的潜在用处。In the past, organizations have deployed separate networks to handle traditional voice, data, and video traffic. These networks are expensive to install, maintain and reconfigure because of the different delivery requirements of the various services. Also, generally, separate terminals are required for the various networks, which increases costs and complicates things from the user's point of view. Furthermore, since these networks are physically disparate, integration is difficult, limiting their potential usefulness.

在专用小交换机(PBX)中，一种内部呼叫(无论是固定的还是移动的)中节省费用的常规方法是利用内部短拔号号码来选择路由。这种方法无论如何都需要号码信息，通常该信息在需要时并不是现存的。依赖于存储在其移动终端的存储器中的私人电话号码簿的用户通常不愿意保存和使用某个人的多个号码，而常用移动用户号码，因此要为办公室基础设施外的呼叫选择路由。这里以及以下各段落中，“办公室”代表一个具有多个用户的环境，这些用户与某个业务实体(比如公司)有关，并且永久地或暂时地有权接入该实体所提供的通信业务。In private branch exchanges (PBXs), a conventional method of cost savings in internal calls (whether fixed or mobile) is to use internal short dial numbers for routing. This method requires number information anyway, which is usually not present when needed. Users who rely on a private telephone directory stored in the memory of their mobile terminal are often reluctant to keep and use multiple numbers for a single person, and instead frequently use mobile subscriber numbers, thus routing calls outside the office infrastructure. Here and in the following paragraphs, "office" denotes an environment with users associated with a business entity (such as a company) and having permanent or temporary access to communication services provided by that entity.

另外还建议，双重方式电话在办公室时接入本地专用网(如DECT)，而在办公室外时接入公用网(如GSM)。在这种系统中，号码可以被变换，以便可以利用单一号码呼叫某个用户。这种情形无论如何都要求在办公室建造和维护相互重叠的通信网还有业务，例如离开某人的写字台的因特网接入被限制在相对较小的应用范围。It is also suggested that dual mode phones be connected to a local private network (such as DECT) when in the office and to a public network (such as GSM) when out of the office. In such a system, numbers can be changed so that a user can be called from a single number. This situation in any case requires the construction and maintenance of overlapping communication networks and services in the office, eg Internet access away from one's desk is limited to a relatively small range of applications.

将交换机与计算机系统连接的最新装置是采用计算机电话综合(CTI)网关。CTI最常用于这样的环境，其中信息存储库(如数据库)必须被每个呼入呼叫所访问。这使得人们可以根据呼入电话呼叫来接收有关客户的附加信息，例如以前的购买史、偏爱、地址等。然而，在采用这种CTI应用时，要求可通过网关提供的开放式应用程序接口接入交换机。再者，在现有的CTI系统中，话音和数据实际上不是被合并而是相互并行工作。A more recent means of connecting switches to computer systems is the use of computer telephony integration (CTI) gateways. CTI is most commonly used in environments where an information repository, such as a database, must be accessed by every incoming call. This allows one to receive additional information about the customer, such as previous purchase history, preferences, address, etc., based on incoming phone calls. However, when using this CTI application, it is required to access the switch through the open application program interface provided by the gateway. Furthermore, in existing CTI systems, voice and data are not actually merged but work in parallel with each other.

这里，发明了一种通信系统，在这种系统中，克服以上这些问题和限制，或者说明显减轻了它们的影响。在本发明的方案中，新的网络单元用来将办公室网络与公用移动网链接，使得，当用户在办公所在地时，通过办公室通信网将呼叫传送给他，而当用户在办公室外时，通过公用移动网将呼叫传送给他。到移动终端的接口不管路由如何情况仍然一样，使得，常规的移动终端在办公室内和在办公室外也都能使用。当用户在办公室时，移动网的移动用户号码被变换为相关的网络地址，从而使得可使用唯一一个用户号码，用于访问某个用户。局内呼叫(即接入到办公室网络的用户之间的呼叫)的路由通过办公室网络来选择，因此只在办公室基础设施内联系业务并花费相应的费用。Here, a communication system has been invented in which the above problems and limitations are overcome, or their effects are significantly mitigated. In the solution of the present invention, the new network unit is used to link the office network with the public mobile network, so that when the user is at the office, the call is delivered to him through the office communication network, and when the user is outside the office, through the The public mobile network forwards the call to him. The interface to the mobile terminal remains the same regardless of the routing, so that conventional mobile terminals can also be used inside and outside the office. When the user is in the office, the mobile subscriber number of the mobile network is transformed into the relevant network address, so that a unique subscriber number can be used for accessing a certain subscriber. Intra-office calls (ie, calls between users connected to the office network) are routed through the office network so that business is only contacted and charged within the office infrastructure.

根据本发明的第一方面，提供一种通信系统，该系统包括：一个网络交换系统和一个包含一个或多个通过空中接口与移动终端通信的基站的第一子系统；和一个包含一个或多个通过空中接口与移动终端通信的基站的第二子系统。第二子系统可让通信系统的第一组移动用户接入，并且包括：一个或多个网络单元，用于将来自网络交换系统的信号转换为第二子系统的数据分组和用于将来自第二子系统的数据分组转换为网络交换系统的信号，一个或多个与第二子系统的一个或多个基站连接的网络单元，用于将来自基站的网络交换系统的信号转换为第二子系统的数据分组和用于将来自第二子系统的数据分组转换为基站的网络交换系统的信号。所述第二子系统还包括用于根据指定给第二子系统的网络单元的网络地址来传送第二子系统中的数据分组的装置；和用于当移动用户的移动终端可以与第二子系统的基站通信时将标识通信系统中的移动用户的号码变换为第二子系统的网络地址的装置。According to a first aspect of the present invention, there is provided a communication system comprising: a network switching system and a first subsystem comprising one or more base stations communicating with mobile terminals via an air interface; and a first subsystem comprising one or more A second subsystem of a base station that communicates with mobile terminals over an air interface. The second subsystem is accessible to the first group of mobile users of the communication system and includes: one or more network elements for converting signals from the network switching system into data packets for the second subsystem and for converting signals from the The data packets of the second subsystem are converted into signals of the network switching system, and one or more network units connected to one or more base stations of the second subsystem are used to convert the signals of the network switching system from the base stations into the second Data packets of the subsystem and signals for switching the data packets from the second subsystem to the network switching system of the base station. The second subsystem also includes means for transmitting data packets in the second subsystem according to the network address assigned to the network element of the second subsystem; A device that converts the number identifying a mobile user in the communication system into the network address of the second subsystem during communication between the base station of the system.

本发明的还有一个方面如独立权利要求9和14中所述的网络单元所说明，以及如独立权利要求16中所述的方法所说明。本发明的优选实施方式如附属权利要求所述。A further aspect of the invention is as described by the network element as stated in independent claims 9 and 14 and as described by the method as stated in independent claim 16 . Preferred embodiments of the invention are described in the dependent claims.

从用户角度来看，本发明的好处在于优选路由所需的功能对他来说是透明的。办公室内和办公室外的活动完全可得到支持，而雇员不再需要考虑使用不同的网络所带来的费用。一个用户可使用一个号码，而无需考虑呼叫是否在办公室内。再者，计算机电话综合允许高级业务的宽频谱。From the user's point of view, the invention has the advantage that the functions required for the preferred routing are transparent to him. In-office and out-of-office activities are fully supported, and employees no longer need to consider the costs of using different networks. One user can use one number regardless of whether the call is in the office or not. Furthermore, computer telephony integration allows a wide spectrum of advanced services.

从公司角度来看，本发明的还有一个好处在于在不增加费用的情况下可以提高业务的质量和数量。在许多情况下，甚至能减少费用。通过计算机电话综合，提高了业务的管理性和适应性，从而给客户带来了更好的服务，总之，这提高了生产率。From the perspective of the company, another advantage of the present invention is that the quality and quantity of business can be improved without increasing costs. In many cases, it can even reduce costs. Through the integration of computer and telephony, the management and adaptability of the business are improved, thereby bringing better service to customers, and in a word, this improves productivity.

办公室网络最好是一种基于IP(因特网协议)的网络，它可以是简单的LAN，也可以是复杂互连的公司WAN。公用移动网最好是一种运营者提供和维护的数字公用陆地移动网(PLMN)，它可以为比办公所在地大得多的区域内的移动终端提供蜂窝覆盖。尽管还可以使用支持任何标准的或任何多址联结方式(如时分多址，码分多址)的系统，但由于GSM系统广阔的全球覆盖，因此这里将该系统作为优选实施方式。The office network is preferably an IP (Internet Protocol) based network, which can be a simple LAN or a complex interconnected corporate WAN. The public mobile network is preferably a digital public land mobile network (PLMN) provided and maintained by an operator, which can provide cellular coverage to mobile terminals in an area much larger than the place of business. Although a system supporting any standard or any method of multiple access (eg time division multiple access, code division multiple access) could also be used, the GSM system is here used as the preferred embodiment due to its wide global coverage.

为了更好地理解本发明并为了说明本发明如何实施，下面将参照附图来举例说明，其中：In order to better understand the present invention and in order to illustrate how the present invention is implemented, the following will be illustrated with reference to the accompanying drawings, wherein:

图1说明了本发明系统的基本思想；Fig. 1 illustrates the basic idea of the system of the present invention;

图2说明了通过一个网络处理不同类型的业务；Figure 2 illustrates the processing of different types of traffic over a network;

图3说明了H．323技术要求的范围；Figure 3 illustrates the H. Scope of 323 technical requirements;

图4说明了本发明方案的各种核心功能以及这些功能对接入功能而言的配置方式；Figure 4 illustrates various core functions of the solution of the present invention and the configuration of these functions for the access function;

图5说明了本发明系统的结构；Fig. 5 illustrates the structure of the system of the present invention;

图6说明了关于内部网位置寄存器所管理的移动用户信息的存储和检索功能的实现；Fig. 6 illustrates the realization of the storage and retrieval functions about the mobile subscriber information managed by the intranet location register;

图7说明了A-网关单元的功能结构；Figure 7 illustrates the functional structure of the A-gateway unit;

图8说明了ISDN／IP网关的结构；Figure 8 illustrates the structure of the ISDN/IP gateway;

图9说明了内部网移动集群的功能结构；Figure 9 illustrates the functional structure of the intranet mobile cluster;

图10说明了WIO关卡(gatekeeper)的功能单元和接口；Figure 10 illustrates the functional units and interfaces of the WIO gatekeeper;

图11说明了内部网移动集群的功能单元；Figure 11 illustrates the functional units of the Intranet Mobile Cluster;

图12说明了本实施方式的接口；Figure 12 illustrates the interface of this embodiment;

图13说明了本发明系统中的选择呼叫路由的方法；Fig. 13 illustrates the method for selecting call routing in the system of the present invention;

图1中的框图说明了利用GSM作为公用移动网的本发明系统的基本思想。在常规的GSM系统中，移动台MS利用无线通信与基站BTS连接。基站BTS又通过所谓的Abis接口与基站控制器BSC连接，该基站控制器控制和管理多个基站。多个基站BTS与控制这些基站的单个基站控制器BSC构成的统一体称为基站子系统BSS。具体地说，基站控制器BSC管理无线通信信道以及越区切换。另一方面，基站控制器BSC还通过所谓的A接口与移动业务交换中心(MSC)连接，移动业务交换中心协调到移动台和来自移动台的连接的建立。通过移动业务交换中心MSC，还可以建立与不在移动通信网中工作的用户的连接。The block diagram in Figure 1 illustrates the basic idea of the inventive system using GSM as the public mobile network. In a conventional GSM system, a mobile station MS is connected to a base station BTS by radio communication. The base station BTS is in turn connected via a so-called Abis interface to a base station controller BSC, which controls and manages a plurality of base stations. The unity of a plurality of base stations BTS and a single base station controller BSC controlling these base stations is called a base station subsystem BSS. Specifically, the base station controller BSC manages radio communication channels and handovers. On the other hand, the base station controller BSC is also connected via the so-called A-interface to a mobile services switching center (MSC), which coordinates the establishment of connections to and from the mobile stations. Via the mobile services switching center MSC, connections to subscribers who are not operating in the mobile communication network can also be established.

在本发明的系统中，办公室WIO(无线因特网局)所在地的基站BTS功能上与办公室网络LAN连接，办公室网络LAN通过IP网与MSC连接。当MS在基站BTS的覆盖区内时，将通过办公室网络LAN处理移动呼入呼叫和移动始发呼叫，以及其他业务如GSM数据、传真和短消息。当MS不在基站BTS的覆盖区内时，将通过BSS按常规方式处理业务。In the system of the present invention, the base station BTS at the location of the office WIO (Wireless Internet Office) is functionally connected with the office network LAN, and the office network LAN is connected with the MSC through the IP network. When the MS is within the coverage area of the base station BTS, it will handle incoming and outgoing mobile calls, as well as other services such as GSM data, fax and short messages, through the office network LAN. When the MS is not in the coverage area of the base station BTS, the business will be handled in a conventional way through the BSS.

应当注意，图1是一个简单化的方案说明。可以有一个以上MSC，它们可以与多个其他通信网(如PLMN、PSTN和ISDN)连接。LAN可以与另一处的同一业务实体的另一LAN连接，并且它们可以通过IP／内部网连接。It should be noted that Figure 1 is a simplified scheme illustration. There can be more than one MSC, which can be connected to multiple other communication networks (eg PLMN, PSTN and ISDN). A LAN can be connected to another LAN of the same business entity at another location, and they can be connected via IP/intranet.

以往，不同类型的媒体即话音、数据和视频是分别传送的。IP电话的最新发展使得可集中通过单个网络来处理不同类型的业务，如图2所示。IP电话通过为各业务指定一种公共传输媒介IP来混合话音、视频和数据。具体地说，IP电话采用开放式IETF(因特网工程任务部)和ITU(国际电信联盟)标准，通过任何采用IP的网络传送多媒体业务，从而可为用户提供物理媒介方面(例如，普通老式电话业务线路、ADSL、ISDN、专用线路、同轴电缆卫星和绞合线对)的灵活性和物理位置方面的灵活性。因此，同样的普遍存在的载送网页、电子信函和数据业务的网络可用来连接到世界范围内的个人、企业、学校和政府。In the past, different types of media, namely voice, data and video, were transmitted separately. The latest development of IP telephony makes it possible to concentrate on handling different types of business through a single network, as shown in Figure 2. IP telephony mixes voice, video and data by specifying a common transmission medium IP for each business. Specifically, IP telephony uses open IETF (Internet Engineering Task Force) and ITU (International Telecommunication Union) standards to deliver multimedia services over any network using IP, thereby providing users with physical media aspects (for example, plain old telephone services) Line, ADSL, ISDN, Dedicated Line, Coax Satellite and Twisted Pair) flexibility and flexibility in physical location. Thus, the same ubiquitous network that carries web pages, e-mail and data traffic can be used to connect individuals, businesses, schools and governments worldwide.

作为一种办公室网络协议的优选实施方式，可采用ITU标准H．323。H．323是一种无连接网络上的开放式多媒体通信(话音、视频和数据)标准，常被认为是“因特网”会议电视标准，但实际上用来支持音频、视频和数据的任意组合，并以任一LAN协议(IPX、TCP／IP)来实现。图3的框图说明了H．323技术要求的范围(虚线所示)。H．323为点到点和点到多点会议规定了呼叫控制、多媒体管理和带宽管理。H．323委托支持标准音频和视频编解码器，并且通过T．120标准支持数据共享。H．323还是网络、平台和应用互相独立的，从而使任意符合H．323的终端可与任意其他终端联合操作。As a preferred implementation of an office network protocol, the ITU standard H. 323. H． 323 is an open multimedia communication (voice, video and data) standard on a connectionless network. Any LAN protocol (IPX, TCP/IP) to achieve. The block diagram in Figure 3 illustrates the H. The scope of 323 technical requirements (shown in dotted line). H． 323 specifies call control, multimedia management, and bandwidth management for point-to-point and point-to-multipoint conferences. H． 323 commissioned to support standard audio and video codecs, and through T. 120 standard supports data sharing. H． 323 is also independent of network, platform and application, so that any H. 323 terminals may operate in conjunction with any other terminal.

H．323允许多媒体流经现有分组交换网。为了抵销LAN等待时间的影响，H．323采用实时传送协议(RTP)，这是一种IETF标准，用来满足使实时音频和视频流经因特网的要求。H．323中每一分组的总开销是12字节的RTP报头，8字节的UDP，20字节的IP以及约1-3个字节的链路级报头和帧指示。保证任意H．323客户支持标准H．261和G．711。H．261是一种用于视频编解码器的ITU标准，用来以64kbps的速率和以176×44象素(QCIF)的分辨率发送压缩视频。G．711是一种用于音频编解码器的ITU标准，用来以48、56和64kbps的比特率发送A-律和μ-律的PCM音频。作为选项，H．323客户还可以支持附加编解码器，如H．263和G．723。H．263是一种ITU标准的视频编解码器而G．723是一种ITU标准的音频编解码器，用来以很低的比特率进行工作。H． 323 allows multimedia to flow over existing packet-switched networks. In order to offset the impact of LAN latency, H. The 323 uses the Real-time Transport Protocol (RTP), an IETF standard that addresses the requirements for streaming real-time audio and video over the Internet. H． The total overhead per packet in 323 is 12 bytes of RTP header, 8 bytes of UDP, 20 bytes of IP, and about 1-3 bytes of link level header and frame indication. Guaranteed any H. 323 Customer Support Standard H. 261 and G． 711. H． 261 is an ITU standard for video codecs used to send compressed video at a rate of 64kbps and at a resolution of 176×44 pixels (QCIF). G． 711 is an ITU standard for audio codecs used to transmit A-law and μ-law PCM audio at bit rates of 48, 56 and 64 kbps. As an option, H. 323 clients can also support additional codecs, such as H. 263 and G． 723. H． 263 is an ITU standard video codec and G. 723 is an ITU-standard audio codec designed to work at very low bit rates.

对于系统控制，H．323标准规定了三种命令和控制协议，其中，H．245负责控制H．323终端操作的控制消息，包括容量交换、命令和指示。H．225．0(Q．931)用来建立两个终端之间的连接，而RAS控制端点与关卡之间的注册、容许和带宽功能。For system control, H. The 323 standard specifies three command and control protocols, among which, H. 245 is responsible for controlling H. 323 Control messages for terminal operations, including capacity exchanges, commands, and instructions. H． 225.0 (Q.931) is used to establish the connection between two terminals, and RAS controls the registration, admission and bandwidth functions between the endpoint and the gate.

对于基于H．323的通信系统，标准规定了四个主要的组成部分。终端是网络上的客户端点。所有终端都必须支持话音通信；而视频和数据支持是可选的。For based on H. 323 communication system, the standard stipulates four main components. An endpoint is a client point on a network. All terminals must support voice communications; video and data support are optional.

网关将H．323会议桥接到其他网络或通信协议。如果不必连接到其他网络或非H．323终端，则不需要网关。Gateway will H. 323 conference bridging to other networks or communication protocols. If you do not have to connect to other networks or non-H. 323 terminals, the gateway is not required.

关卡执行两个重要功能：地址转换和带宽管理。这些功能有助于关卡保持良好的网络状态。关卡还运用呼叫控制功能，以将H．323连接的数量以及这些连接所用的总带宽限制在H．323“区”内。一个H．323区是单个关卡所管理的所有终端、网关和多点控制单元(MCU)的集合、在H．323系统中，不需要关卡。然而，如果有关卡，则终端必须使用其业务。Gatekeepers perform two important functions: address translation and bandwidth management. These features help levels stay in good network shape. The checkpoint also uses the call control function to transfer H. 323 connections and the total bandwidth used by those connections are limited in H. 323 "area". a h. Area 323 is a collection of all terminals, gateways and multipoint control units (MCUs) managed by a single checkpoint. In H. In the 323 system, no level is required. However, if a card is present, the terminal must use its services.

多点控制单元支持三个或三个以上的端点之间的会议。MCU包括一个所要求的多点控制器(MC)和多个(或没有)多点处理器(MP)。MC执行所有终端之间的H．245协商，以确定共同的音频和视频处理能力，而MP确定终端端点之间的音频、视频和数据流的路由。MCU也是可选的。The multipoint control unit supports conferences between three or more endpoints. The MCU includes a required multipoint controller (MC) and multiple (or none) multipoint processors (MP). MC performs H. 245 negotiation to determine common audio and video processing capabilities, while MP determines the routing of audio, video, and data streams between end-points. MCU is also optional.

本发明的系统基于利用综合通信系统的最新发展，这种综合通信系统用于将公用移动网与专用网联结，这对处理过程中的不同用户大有好处。再者，为了实现所述的本发明的系统，还发明了一些新的单元。The system of the invention is based on the use of the latest developments in integrated communication systems for linking public mobile networks with private networks, which greatly benefits the different users in the process. Furthermore, in order to realize the system of the present invention described, some new units have been invented.

图4中，说明了本发明方案的各种核心功能以及这些功能对接入功能而言的配置方式。从公司角度来看，本发明的系统使得公司可利用数据通信资源在内部提供广泛的电信业务。对于公共接入，与本地电信运营者合作是必要的。从运营者角度来看，本发明系统的用户可以共享公用TCP／IP互连业务、电信网和最终用户业务接入点的资源，而且可利用专用LAN访问公用网一方以及公司WAN中的其他用户。意识到影响CTI的PBX工业正推动着最终用户业务和应用向着计算机环境发展，因此，在发展增值业务和多媒体业务时，潜在的协同作用是很显然的。本发明系统的核心功能包括查号业务、呼叫控制业务、活动性管理、操作和维护、计费、业务质量保证和安全业务。比方说，本发明系统可被看作是一种新型的具有特定位置寄存器的GSM BSS／NSS，或看作是H．323建议中所述的基于分组的多媒体通信系统的扩充。In FIG. 4 , various core functions of the solution of the present invention and how these functions are configured for the access function are illustrated. From a company's point of view, the system of the present invention enables the company to use data communication resources to provide a wide range of telecommunication services internally. For public access, cooperation with local telecom operators is necessary. From the point of view of the operator, the users of the system of the present invention can share the resources of the public TCP/IP interconnection service, the telecommunication network and the service access point of the end user, and can use the private LAN to access one party of the public network and other users in the company WAN . Realizing that the PBX industry influencing CTI is driving end-user services and applications towards the computer environment, potential synergies are evident in the development of value-added services and multimedia services. The core functions of the system of the invention include directory inquiry service, call control service, activity management, operation and maintenance, billing, service quality assurance and security service. For example, the system of the present invention can be regarded as a new type of GSM BSS/NSS with a specific location register, or as a H. Extension of the packet-based multimedia communication system described in Recommendation 323.

图5中，说明了本发明系统的结构。如图所示，所有新网络单元都位于A-接口和Abis接口之间。下面，用术语WIO(无线因特网局)来表示包括本发明系统中的新功能和新单元的这一实体，总之，不将保护范围限定在与本发明系统有关的任何产品名称。WIO至少有三个不同的网关AGW、IGW、IMC，它们每个都有不同接口，以区分GSM或H．323网的部件。应当注意，根据H．323的网关功能仅是这些组成部分所负责的功能之一。In Fig. 5, the structure of the system of the present invention is illustrated. As shown, all new network elements are located between the A-interface and the Abis interface. In the following, the term WIO (Wireless Internet Office) is used to denote this entity comprising new functions and new units in the system of the invention, in any case without limiting the scope of protection to any product name related to the system of the invention. WIO has at least three different gateways AGW, IGW, and IMC, each of which has different interfaces to distinguish GSM or H. 323 net components. It should be noted that according to H. The gateway function of 323 is only one of the functions that these components are responsible for.

在运营者一侧，该WIO块包括网络单元AGW、IGW和ILR，下面将详述这些网络单元的用途和功能。On the operator's side, the WIO block includes network elements AGW, IGW and ILR, and the purposes and functions of these network elements will be described in detail below.

A-接口网关AGW的用途是通过MSC处理办公室网络与公用移动网之间的通信。AGW提供办公室网络与MSC之间的信令和业务路由，从而形成到MSC的BSS接口。因此，从MSC角度来看，WIO看上去就象是一个或多个具有一定位置区码(LAC)的BSS。AGW可以直接利用A-接口连接到MSC。总之，AGW未必需要提供变码功能，因此，此外它还可以利用Ater-接口连接到一般安排在MSC与BSC之间的变码器(如诺基亚变码器TCSM2)。因此，变码功能不在AGW单元本身中执行，而AGW的功能是将基于PCM的业务转换成IP，反之亦然。The purpose of the A-interface gateway AGW is to handle the communication between the office network and the public mobile network through the MSC. The AGW provides signaling and service routing between the office network and the MSC, thereby forming a BSS interface to the MSC. Therefore, from the perspective of MSC, WIO looks like one or more BSSs with a certain location area code (LAC). The AGW can directly connect to the MSC using the A-interface. In a word, the AGW does not necessarily need to provide the transcoding function, therefore, it can also use the Ater-interface to connect to the transcoder (such as the Nokia transcoder TCSM2) generally arranged between the MSC and the BSC. Therefore, the transcoding function is not performed in the AGW unit itself, but the function of the AGW is to convert PCM-based traffic into IP and vice versa.

图7中，说明了AGW的功能结构。由于AGW与MSC之间的信令遵循标准的信令和接口，因此MSC的使用没有限制。AGW最好用计算机如NT服务器来实现。AGW的性能与服务器的配置以及所用的LAN(IP堆栈容许能力、以太网等)有关。然而，一个逻辑AGW可以认为是一组服务器。所支持的话音业务信道数随配置的变化而变化。例如，为了支持一个复用的E1连接，需要两个服务器的配置，因此产生大约120个业务信道。In Fig. 7, the functional structure of the AGW is illustrated. Since the signaling between the AGW and the MSC follows standard signaling and interfaces, there is no limit to the use of the MSC. AGW is preferably implemented with a computer such as an NT server. The performance of the AGW is related to the configuration of the server and the LAN used (IP stack capacity, Ethernet, etc.). However, a logical AGW can be considered as a group of servers. The number of voice traffic channels supported varies with configuration. For example, to support a multiplexed E1 connection, a configuration of two servers is required, thus generating approximately 120 traffic channels.

AGW的功能至少包括下列功能中的大多数：The functions of AGW include at least most of the following functions:

·信令转换和终止：A-接口-WIO·Signaling conversion and termination: A-interface-WIO

·业务路由选择：Ater接口-WIO·Service routing selection: Ater interface-WIO

·Ater／A-接口信道管理·Ater/A-interface channel management

·TRAU(变码和速率适配单元)帧处理· TRAU (Transcoding and Rate Adaptation Unit) frame processing

·IP DTX(IP上的不连续语音)· IP DTX (Discontinuous Voice over IP)

·变码器(TCSM2E)控制·Transcoder (TCSM2E) control

·对WIO操作和管理(O&M)的支持· Support for WIO operations and management (O&M)

·产生业务和负载的统计Generate business and load statistics

·集群选择(将服务器集群在一起的可能性)。• Cluster selection (possibility to cluster servers together).

所有WIO组成部分之间的信令最好被加密，并且这还涉及实现O&M的单元与AGW之间的通信。AGW一般收集其主要事务尤其是检测到的错误和干扰的统计信息。WIO关卡单元(将在后面说明)不断地控制其他WIO网络单元的状态，因此，AGW也向那些查询作出响应。于是，MSC中断进行中的WIO呼叫。万一WIO网络连接有故障，那么AGW也暂时关闭MSC信令链路。Signaling between all WIO components is preferably encrypted, and this also involves communication between the O&M implementing unit and the AGW. The AGW generally collects statistics on its main transactions, especially detected errors and disturbances. The WIO Gatekeeper Unit (described later) constantly controls the status of other WIO Network Units, so the AGW also responds to those queries. The MSC then disconnects the ongoing WIO call. In case the WIO network connection fails, the AGW also temporarily closes the MSC signaling link.

运营者一侧的第二个单元是ISDN、IP网关(IGW)，该网关管理WIO与公用电话网之间的通信，它是一个通常按CTI概念定义的网关。最好采用一号数字信令系统(DSS．1)。8中，说明了IGW的功能结构。IGW有一个到MSC和PSTN接口。从MSC角度来看，IGW看上去就象是一个PBX。IGW支持ITU-T标准G．711与G．723之间以及G．711与GSM 06．10之间的变码。IGW收集其主要事务尤其是检测到的错误和干扰的统计信息，并通过WIO关卡(将在后面说明)将该信息转发到O&M应用中。IGW的结构基于与AGW类似的硬件。The second unit on the operator's side is the ISDN, IP Gateway (IGW), which manages the communication between WIO and the public telephone network, a gateway usually defined by the concept of CTI. It is best to use Digital Signaling System No. 1 (DSS.1). 8, the functional structure of the IGW is described. IGW has an interface to MSC and PSTN. From the perspective of MSC, IGW looks like a PBX. IGW supports ITU-T standard G． 711 and G． Between 723 and G. Code change between 711 and GSM 06.10. The IGW collects statistical information on its main transactions, especially detected errors and disturbances, and forwards this information to the O&M application via the WIO gate (described later). The structure of IGW is based on hardware similar to AGW.

运营者一侧的第三个单元是内部网位置寄存器ILR，它负责WIO中的查号业务。GSM提供一个归属位置寄存器(HLR)，这是一个永久存储移动用户的所有用户参数的寄存器，和一个或多个访问者位置寄存器(VLR)，在这种寄存器中暂时存储呼叫建立的所有用户参数，只要用户在该寄存器所控制的位置区内。对于这些寄存器，有关该技术的主要情况通常是熟练技术人员所熟知的。The third unit on the operator's side is the intranet location register ILR, which is responsible for the directory service in the WIO. GSM provides a Home Location Register (HLR), which is a register which permanently stores all subscriber parameters of a mobile subscriber, and one or more Visitor Location Registers (VLR), which temporarily stores all subscriber parameters of call setup in such registers , as long as the user is within the location area controlled by the register. For these registers, the general facts about the technology are generally known to those skilled in the art.

内部网位置寄存器(ILR)是负责WIO中永久用户数据存储的一个数据库，而另一方面，它是一个访问HLR中的用户数据和计费系统的入口管理程序。ILR的用途是提供一个存储库，用于检索为WIO系统所配置的移动台(MS)的特定信息。在该数据库中，所有配置给WIO的MS的特定信息都有一个固定的入口。这些MS的特定设置只有当MS登录到WIO系统中时有效。Intranet Location Register (ILR) is a database responsible for permanent subscriber data storage in WIO, and on the other hand, it is an entry management program for accessing subscriber data and billing system in HLR. The purpose of the ILR is to provide a repository for retrieving mobile station (MS) specific information configured for the WIO system. In this database, there is a fixed entry for all specific information of MS configured to WIO. These MS-specific settings are only valid when the MS is logged into the WIO system.

再者，在办公室一侧，WIO关卡(将在后面详述)修改号码簿中的WIO范围内的每一MS的当前地址的变换。ILR通过MAP接口与HLR和VLR连接。针对HLR，ILR的主要任务是从HLR中检索用户的业务简要信息，例如补充业务设置等。ILR例如涉及基于工业标准Pentium技术的Windows NT服务器。为了很好地完成其任务，该服务器将提供高实用性、容错和快速恢复。Furthermore, on the office side, the WIO Gatekeeper (described in detail later) modifies the translation of the current address of each MS within the WIO range in the directory. ILR connects with HLR and VLR through MAP interface. For the HLR, the main task of the ILR is to retrieve the user's business brief information from the HLR, such as supplementary business settings. ILR involves, for example, Windows NT servers based on industry standard Pentium technology. To do its job well, the server will provide high availability, fault tolerance, and fast recovery.

图6中，更详细地说明了关于ILR所管理的移动用户信息的存储和检索功能的实现。应当注意，所示的接口适用于本实施方式，但不排除包括更多或更少接口的等效实现方式。ILR接口实现关于ILR所管理的移动用户信息的存储和检索功能。该功能使涉及细节的数据库对WIO关卡来说是透明的，因此，位于下面存储方法中的变化不要求WIO关卡作任何变化。ILR提供了WIO关卡所提出的请求的编码和解码，并且还返回WIO关卡所请求的信息。In Fig. 6, the implementation of the storage and retrieval functions of mobile subscriber information managed by the ILR is illustrated in more detail. It should be noted that the interfaces shown are suitable for this embodiment, but equivalent implementations comprising more or fewer interfaces are not excluded. The ILR interface implements the storage and retrieval functions of mobile subscriber information managed by the ILR. This functionality makes the database of details transparent to the WIO Gatekeeper, so changes in the underlying storage methods do not require any changes to the WIO Gatekeeper. The ILR provides encoding and decoding of requests made by the WIO Gatekeeper, and also returns information requested by the WIO Gatekeeper.

HLR接口用于从HLR中检索移动用户的基本信息及其补充业务设置。MS关卡位置地址存储在ILR中，并且还对位置更新进行检索。来自WIO关卡的移动位置更新请求作为HLR信息检索的触发事件。The HLR interface is used to retrieve the basic information of the mobile subscriber and its supplementary service settings from the HLR. MS checkpoint location addresses are stored in the ILR and location updates are also retrieved. A mobile location update request from a WIO gate acts as a trigger event for HLR information retrieval.

VLR接口用于请求用户的IMSI(国际移动用户标识符)，如果在对于WIO区的第一位置更新期间移动台与TMSI(临时移动用户标识符)有关。在这两种情况下，都要采用MAP协议。The VLR interface is used to request the subscriber's IMSI (International Mobile Subscriber Identity) if the mobile station is associated with a TMSI (Temporary Mobile Subscriber Identity) during the first location update for the WIO zone. In both cases, the MAP protocol is used.

LDAP接口提供一种装置，用于检索和保留MS特定信息，该信息存储在与ILR连接的查号业务数据库中。这一信息从象HLR接口和IN接口那样的不同信源中收集到。与查号业务通信中所采用的协议是轻便号码簿接入协议(LDAP)。The LDAP interface provides a means for retrieving and retaining MS specific information stored in a directory service database connected to the ILR. This information is gathered from different sources like the HLR interface and the IN interface. The protocol used in communicating with directory services is the Lightweight Directory Access Protocol (LDAP).

IN接口是一个可选接口，它提供一种装置，用于从智能网中检索用户的附加业务信息，例如使得能使用WIO内的短码的专用编号方式。这一接口例如基于IN所提供的业务管理接口(SMI)。The IN interface is an optional interface that provides a means for retrieving additional service information for the subscriber from the Intelligent Network, eg enabling the use of private numbering of short codes within the WIO. This interface is eg based on the Service Management Interface (SMI) provided by IN.

计费接口提供一种装置，用于将计费有关的原始数据发送到计费系统，以便进行后处理。在这一实施方式中，本地数据库ILR作为一个WIO关卡所收集的计费信息的中间存储器。The billing interface provides a means for sending billing-related raw data to the billing system for post-processing. In this embodiment, the local database ILR acts as an intermediate storage for charging information collected by a WIO gatekeeper.

在WIO的办公室一侧，网络单元内部网移动集群IMC和WIO关卡GK如图5中所示。如前面所述，在H．323术语中，内部网移动集群(IMC)实质上是一个网关，并且在WIO环境中它模拟BSC的作用。IMC利用基于LAPD的Q．931和GSM特定信令，并为Abis接口产生语音和数据的TRAU帧。它还管理无线资源和信道配置，并管理BTS的配置。IMC向其他WIO组成部分提供GSM信令和流变换。在呼叫期间，它还检测可能的越区切换和功率控制动作的需要。On the office side of the WIO, the network unit intranet mobile cluster IMC and the WIO gateway GK are shown in Figure 5 . As mentioned earlier, in H. In 323 terms, Intranet Mobile Cluster (IMC) is essentially a gateway, and it simulates the role of BSC in the WIO environment. IMC uses LAPD-based Q. 931 and GSM-specific signaling, and generate TRAU frames for voice and data for the Abis interface. It also manages radio resources and channel configuration, and manages the configuration of the BTS. The IMC provides GSM signaling and stream transformation to other WIO components. It also detects the need for possible handover and power control actions during a call.

针对WIO，图9中的功能层所示的IMC核心功能包括：运行具有GSM信令协议的CVOPS，运行WIO系统控制和IP加密，控制针对WIO关卡的插孔接口，和控制针对LAPD服务器上GSM／IP业务选项的插孔接口。针对BTS，IMC的主要功能是：For WIO, the IMC core functions shown in the functional layer in Figure 9 include: running CVOPS with GSM signaling protocol, running WIO system control and IP encryption, controlling jack interfaces for WIO checkpoints, and controlling GSM for LAPD servers Jack interface of /IP service option. For BTS, the main functions of IMC are:

·BTS控制和管理·BTS control and management

·无线资源控制和管理·Radio resource control and management

·无线网络控制和管理· Wireless network control and management

·无线信道配置和管理·Wireless channel configuration and management

·IP DTX·IP DTX

·射频跳频·RF Frequency Hopping

·越区切换算法和目标小区表报告·Handover algorithm and target cell table report

·越区切换管理· Handover management

·从IP业务到G．703的语音转换和到Abis端的TRAU帧形成·From IP business to G． 703 voice conversion and TRAU frame formation to Abis

·IMC状态管理·IMC status management

·无线目标状态管理·Wireless target state management

·IMC和无线接入差错管理· IMC and wireless access error management

·状态报告形成。• Formation of status reports.

IMC通常被实现成一种无线控制的单元，它例如基于具有E1接口卡的Pentium^PC。The IMC is usually implemented as a wirelessly controlled unit, eg based on a Pentium^(R) PC with an E1 interface card.

IMC实际上包括如图11中所示的三个功能单元，。无线接入部分111包括一个无线接收机112和发射单元113、E1接口141。数据处理单元116一般用计算机来实现；例如基于Pentium^的NT计算机。DPU116还包括三个功能单元：无线资源管理单元117，操作和维护单元118和电信单元119。WIO接口单元120最好是一个支持若干个物理连接的LAN接口卡。The IMC actually consists of three functional units, as shown in Figure 11. Thewireless access part 111 includes awireless receiver 112 , a transmittingunit 113 , and an E1 interface 141 . Thedata processing unit 116 is typically implemented by a computer; for example a Pentium^(R) based NT computer. TheDPU 116 also includes three functional units: a radioresource management unit 117 , an operation andmaintenance unit 118 and atelecommunication unit 119 .WIO interface unit 120 is preferably a LAN interface card supporting several physical connections.

图5中办公室一侧所示的第二个单元是WIO关卡。关卡一般是一个用于提供业务(例如呼叫转移，自动重新路由选择和IP网中的详细部门记帐)的单元。WIO系统中WIO关卡的任务还包括向WIO端点提供呼叫控制业务。The second unit shown on the office side in Figure 5 is the WIO checkpoint. A gate is generally a unit for providing services such as call forwarding, automatic rerouting and detailed departmental billing in IP networks. The task of the WIO gate in the WIO system also includes providing call control services to the WIO endpoints.

关卡的任务至少包括下列任务中的大多数：Missions for a level include at least most of the following missions:

·地址转换功能·Address conversion function

·带宽管理·Bandwidth management

·呼叫管理·Call management

·活动性管理·Activity management

·向IMC发出寻呼请求(将在后面说明)Send a paging request to IMC (will be explained later)

·检查WIO业务的业务概况和授权· Check the business profile and authorization of WIO business

·收集呼叫数据记录(CDR)Collect Call Data Records (CDR)

·将呼叫数据记录转发到ILR· Forward call data records to ILR

·为O&M应用提供的支持接口·Support interfaces for O&M applications

·检查其他WIO组成部分的功能· Check the functionality of other WIO components

·负责终端注册和状态控制。·Responsible for terminal registration and status control.

这些任务中，有些对熟练技术人员而言是众所周知的，有些将在这里进行详细说明。关卡包括如图10中所示的一些功能单元和接口。Some of these tasks are well known to those skilled in the art, and some are described in detail here. A level includes some functional units and interfaces as shown in Figure 10.

设备管理101负责其他WIO实体的状态控制以及终端注册。设备管理程序将WIO特定信息存储到设备数据库102中。Device management 101 is responsible for status control of other WIO entities and terminal registration. The device manager stores WIO specific information into thedevice database 102 .

操作和维护103包括一个可选的WIO关卡计费功能，它收集呼叫的信息，从中形成计费记录(CDR)并将计费记录发送到ILR。Operations andMaintenance 103 includes an optional WIO Gatekeeper Charging function which collects call information, forms a Charging Record (CDR) from it and sends the Charging Record to the ILR.

呼叫管理104可被定义为启动和控制两个或两个以上的用户之间的电信的一组功能。在本发明方案中，呼叫管理提供一定规模的基本结构，并为新的高级业务产生一个可扩充的平台。呼叫管理要能支持诸如将IP地址和电话号码互相变换的信息。WIO关卡可用来管理不同的呼叫类型(如话音、数据、传真、SMS和会议呼叫)。这些呼叫可在下列中的两者之间建立：移动台、网络终端和固定电话。只要PBX与WIO基础结构之间没有网关，就可通过MSC建立固定和移动电话之间的呼叫。Call management 104 may be defined as a set of functions that initiate and control telecommunications between two or more users. In the solution of the present invention, call management provides a basic structure of a certain scale and creates an expandable platform for new advanced services. Call management should be able to support information such as converting IP addresses and telephone numbers to each other. WIO gates can be used to manage different call types (such as voice, data, fax, SMS and conference calls). These calls can be established between two of the following: mobile stations, network terminals and fixed telephones. Calls between fixed and mobile phones can be established through the MSC as long as there is no gateway between the PBX and the WIO infrastructure.

关卡既管理内部呼叫又管理外部呼叫。内部呼叫是指在同一WIO关卡内发出的或在一个局的两个不同的WIO关卡内的用户之间发出的呼叫。外部呼叫是指两个用户都没有接入办公室网络的呼叫。Gates manage both internal and external calls. Internal calls refer to calls made within the same WIO gate or between users within two different WIO gates of an office. An external call is one in which neither user is connected to the office network.

WIO关卡管理位置区。当办公室内的用户被外部网络呼叫时，该呼叫被IGW或AGW发送到该被呼移动台当前所处的WIO关卡。IGW或AGW从ILR中查询位置数据。然后，WIO关卡将广播寻呼消息发送到它控制的区内的各个IMC，并将呼叫发送给真正的IMC。WIO checkpoints manage location areas. When a user in the office is called by an external network, the call is sent by the IGW or AGW to the WIO gate where the called mobile station is currently located. The IGW or AGW queries the ILR for location data. The WIO gatekeeper then sends a broadcast paging message to each IMC in the area it controls, and sends the call to the real IMC.

在另一种情况下，两个用户都在同一关卡的区域中。那么，WIO关卡如果检测到B用户在同一WIO关卡内，则将寻呼广播消息发送给该关卡内的各个IMC。注册了该用户的IMC将它的应答发送给WIO关卡，于是关卡将呼叫发送给这一IMC。In another case, both users are in the area of the same level. Then, if the WIO gate detects that user B is in the same WIO gate, it will send a paging broadcast message to each IMC in the gate. The IMC with which the user is registered sends its answer to the WIO gatekeeper, which then forwards the call to this IMC.

在办公室内的用户正在呼叫办公室外的用户的情况下，WIO关卡检查用户B的位置。如果它没有发现用户B，那么WIO关卡通过AGW将呼叫发送到移动业务交换中心MSC。In the case where a user in the office is calling a user outside the office, the WIO checkpoint checks the location of user B. If it does not find User B, the WIO Gatekeeper sends the call to the Mobile Services Switching Center MSC via the AGW.

活动性管理105包括与用户的活动性有关的任务，如位置更新和越区切换。每当已接入办公室网络的一个新用户到达该办公室环境，便进行位置更新。另外，最好还允许其他用户(例如访问者)在WIO中进行位置更新，不过，他们的呼叫通过MSC被发送。最好配置这一功能，以便运营者可允许外部用户也使用与WIO连接的基站。在WIO内，从ILR中接收用户信息。Activity management 105 includes tasks related to the user's activity, such as location updates and handoffs. A location update occurs each time a new user, already connected to the office network, arrives at the office environment. In addition, other users (eg visitors) are also preferably allowed to make location updates in WIO, however their calls are routed through the MSC. It is preferable to configure this function so that the operator can allow external users to also use the WIO-connected base station. In WIO, user information is received from ILR.

越区切换请求消息由IMC发送到WIO关卡。这一消息包括最佳目标小区目录。在常规GSM网中进行的越区切换也在WIO中进行。然而，一种例外情况是从WIO到外部非WIO小区的越区切换。如果电话呼叫是内部的非MSC控制的呼叫，那么这种情况是不可能的。如果电话呼叫是MSC控制的呼叫，那么这意味着A用户在办公室内，而B用户在办公室外，因此这种情况下越区切换是可行的。这种例外情况规定了费率方案，对局内呼叫而言(低费率甚至免费)，该费率方案是不同的。这是有好处的，主叫或被叫移动台无论何时移动到办公室覆盖区外，都可使装置控制这种特定费率的实现方式。The Handover Request message is sent by the IMC to the WIO Gatekeeper. This message includes a list of best target cells. Handovers performed in conventional GSM networks are also performed in WIO. An exception, however, is handover from WIO to an external non-WIO cell. This is not possible if the telephone call is an internal non-MSC controlled call. If the telephone call is a call controlled by the MSC, this means that the A subscriber is in the office and the B subscriber is out of the office, so handover is possible in this case. This exception defines a tariff scheme which is different for intra-office calls (low tariff or even free). It is advantageous to have the device control the implementation of this particular tariff whenever the calling or called mobile station moves outside the office coverage area.

关卡最好收集来自WIO中所进行的所有事务(即话音和数据呼叫、传真、SMS、失败的呼叫，等等)的统计信息。如果需要利用这一信息来计费，则将该信息存储到文件中，然后传送到ILR中。ILR中的计费接口收集关于“呼叫数据记录”(CDR)的信息，并将该信息发送到计费系统中。The gatekeeper preferably collects statistics from all transactions made in the WIO (ie, voice and data calls, faxes, SMS, failed calls, etc.). If this information needs to be used for billing, the information is stored in a file and then sent to the ILR. The billing interface in the ILR collects information on "Call Data Records" (CDRs) and sends this information to the billing system.

应当注意，IMC与WIO关卡之间的功能分配适合这里所示的实施方式。通过改变功能或将这些功能不同地分配到这两个单元中的一个中或这两个单元中，可以实现等效的应用。It should be noted that the distribution of functions between the IMC and WIO gates is suitable for the embodiment shown here. Equivalent applications can be achieved by changing the functions or allocating these functions differently in one or both of the units.

如上所述，与WIO有关的接口实际上包括一些标准接口。图12中，说明了本实施方式的接口。针对MSC，WIO有两个接口。一个用IGW实现而另一个用AGW实现。通过提供第2层(LAPD)和第3层(Q．931)协议业务，IGW符合DSS．1标准的要求。MSC接口符合多个标准，象E1，2048Mbit／s(基于G．703和G．704)，LAPD(Q．921)，以及采用标准Q．931和Q．932的第3层。另外针对PBX和PSTN，IGW还采用D″″．1标准。针对移动台，采用蜂标准如GSM。针对HLR和VLR，ILR实现MAP接口。WIO关卡采用H．323协议，以便按如下方式与其他WIO实体通信：As mentioned above, the interfaces related to WIO actually include some standard interfaces. In FIG. 12, the interface of this embodiment is demonstrated. For MSC, WIO has two interfaces. One is implemented with IGW and the other is implemented with AGW. By providing the second layer (LAPD) and the third layer (Q. 931) protocol services, IGW complies with DSS. 1 standard requirements. MSC interface conforms to multiple standards, like E1, 2048Mbit/s (based on G.703 and G.704), LAPD (Q.921), and adopts standard Q. 931 and Q. 3rd floor of 932. In addition, for PBX and PSTN, IGW also adopts D "". 1 standard. For mobile stations, cellular standards such as GSM are used. For HLR and VLR, ILR implements MAP interface. WIO level adopts H. 323 protocol in order to communicate with other WIO entities as follows:

·通过RAS信道将PC终端和WIO实体注册到WIO关卡·Register PC terminal and WIO entity to WIO gate through RAS channel

·在呼叫建立期间使用Q．931信道• Use Q during call setup. 931 channel

·在呼叫期间，容量、编解码和多点呼叫控制采用H．245·During the call, capacity, codec and multipoint call control adopt H. 245

·WIO采用基于H．323标准的已选择路径的信令模式。WIO关卡与其他WIO单元之间的所有信令最好都被加密。·WIO uses H. 323 standard signaling mode of the selected path. All signaling between the WIO Gatekeeper and other WIO units is preferably encrypted.

在这一实施方式的WIO单元中，支持以下接口：In the WIO unit of this embodiment, the following interfaces are supported:

·LAN接口·LAN interface

·Windows套接口·Windows sockets

·UDP数据报中控制话音分组传输的RTP／RTCP· RTP/RTCP for controlling voice packet transmission in UDP datagram

图13中，说明了本发明系统中的选择呼叫路由的方法。作为一个例子，示出了办公室环境中与来自WIO用户的移动始发端呼叫有关的步骤。在步骤131中，IMC接收来自用户A的含有用户B的号码的呼叫建立请求。该请求被传送到WIO关卡，WIO关卡根据ILR(步骤132)检查用户B是否是WIO用户(步骤133)。如果用户B是WIO用户，那么WIO关卡寻呼它所控制的所有IMC(步骤134)，并检查它是否接收到应答(步骤135)。如果由于某种原因没有接收到应答，则取消该呼叫(步骤136)。如果IMC对与用户A的MS通信的BTS有应答，则通过用户A和用户B的IMC单元建立连接(步骤137)。如果用户B不是WIO用户，那么WIO关卡通过AGW将呼叫发送到MSC(步骤139)，并以常规方式实现呼叫建立(步骤140)，尽管数据传送既涉及GSM又涉及H．323。In Fig. 13, the method of selecting call routing in the system of the present invention is illustrated. As an example, the steps related to a mobile originating call from a WIO user in an office environment are shown. In step 131, the IMC receives a call setup request from user A containing user B's number. This request is passed to the WIO Gatekeeper, which checks against the ILR (step 132) whether user B is a WIO user (step 133). If User B is a WIO user, the WIO Gatekeeper pages all the IMCs it controls (step 134) and checks if it receives a reply (step 135). If for some reason no answer is received, the call is canceled (step 136). If the IMC responds to the BTS communicating with user A's MS, a connection is established through user A and user B's IMC units (step 137). If user B is not a WIO subscriber, then the WIO gatekeeper sends the call to the MSC via the AGW (step 139), and call setup is effected in a conventional manner (step 140), although the data transfer involves both GSM and H. 323.

尽管根据一种优选实施方式展现和描述了本发明，然而对那些普通熟练技术人员而言，显然在不背离后面权利要求书所述的本发明范围的情况下，可以对这一优选实施方式进行修改。While the invention has been shown and described in terms of a preferred embodiment, it will be apparent to those of ordinary skill that modifications to the preferred embodiment can be made without departing from the scope of the invention as set forth in the following claims. Revise.

Claims (19)

1. communication system, this system comprise an internet exchange system (MSC) and

First subsystem (BSS) that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface; With

Second subsystem that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface (WIO, BTS), described second subsystem (WIO BTS) can allow first group of mobile subscriber of communication system insert, and comprise:

One or more first network element (AGW; IGW), be used in the future the conversion of signals of automatic network switching system (MSC) and be second subsystem (WIO, packet BTS) and be used for from second subsystem (WIO, packet BTS) is converted to the signal of internet exchange system (MSC),

One or more and the second subsystem (WIO, BTS) second network element (IMC) that one or more base stations (BTS) connect, being used for will be from the second subsystem (WIO, the conversion of signals of base station BTS) (BTS) is the second subsystem (WIO, BTS) packet and being used for from the second subsystem (WIO, BTS) packet is converted to second subsystem (WIO, the signal of base station BTS) (BTS);

The device (IP, LAN), be used for according to be assigned to second subsystem (WIO, second subsystem (WIO, BTS) packet in are transmitted in the network address of first and second network element BTS); With

(ILR GK), is used for when mobile subscriber's portable terminal can (WIO, the FH-number transform that will identify the mobile subscriber in the communication system during base station BTS) (BTS) communication be second subsystem (WIO, network address BTS) with second subsystem device.

2. communication system as claimed in claim 1, the wherein said second subsystem (WIO, BTS) comprise device (GK, ILR), be used for the second subsystem (WIO, BTS) Route Selection is carried out in the calling between first group the user in, as (WIO, each of network address BTS) identifies the response of mobile subscriber's number described in communication system to being transformed to second subsystem.

3. communication system as claimed in claim 1, the wherein said second subsystem (WIO, BTS) comprise the user register (ILR) of the user position information that is used to store first group, described positional information comprises the data about the network address of the network element that is connected with the current base station that can communicate by letter with it of user's portable terminal.

4. communication system as claimed in claim 1, (WIO, BTS) (IP LAN) comprises the IP protocol network to the described device of the packet in wherein to be used to transmit second subsystem.

5. communication system as claimed in claim 4 is characterized in that, first group of mobile subscriber comprises the employee of the office that inserts described IP protocol network.

6. communication system as claimed in claim 1, (WIO, BTS) (IP LAN) supports H.323 standard to the described device of the packet in wherein to be used to transmit second subsystem.

7. communication system as claimed in claim 2, wherein be used for the second subsystem (WIO, BTS) calling between first group the user in carry out Route Selection described device (GK, ILR) be used for local paging from or the calling of the user terminal of first group of incoming call.

8. communication system as claimed in claim 2, described device (the GK that wherein is used for Route Selection, ILR) be used for this calling is sent to internet exchange system (MSC), as to any response in two conditions of discontented foot row: each is with belonging to first group per family, each described user's FH-number transform is second subsystem (WIO, network address BTS) in the sign communication system.

9. a kind of network element (ILR) in the communication system, this system comprise an internet exchange system (MSC) and

First subsystem (BSS) that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface; With

Second subsystem that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface (WIO, BTS), described second base station sub-system (WIO BTS) can allow first group of mobile subscriber of communication system insert, and comprise:

One or more first network element (AGW; IGW), be used in the future the conversion of signals of automatic network switching system (MSC) and be second subsystem (WIO, packet BTS) and be used for from second subsystem (WIO, packet BTS) is converted to the signal of internet exchange system (MSC),

One or more and the second subsystem (WIO, BTS) second network element (IMC) that one or more base stations (BTS) connect, being used for will be from the second subsystem (WIO, the conversion of signals of base station BTS) (BTS) is the second subsystem (WIO, BTS) packet and being used for from the second subsystem (WIO, BTS) packet is converted to second subsystem (WIO, the signal of base station BTS) (BTS);

The device (IP, LAN), be used for according to be assigned to second subsystem (WIO, second subsystem (WIO, BTS) packet in are transmitted in the network address of first and second network element BTS); And

Described network element (ILR) comprises some interfaces, in order to collect and to store from internet exchange system (MSC) and second subsystem (WIO, first group user's BTS) permanent and variable user information.

10. network element as claimed in claim 9 (ILR), wherein said variable information comprise second subsystem (WIO, the network address of network element BTS) (IMC) that is connected with user's the current base station that can communicate by letter with it of portable terminal (MS) (BTS).

11. network element as claimed in claim 10 (ILR), wherein unit (ILR) is used for collecting at least and storing described user with respect to second subsystem (WIO, the user profile that position BTS) is upgraded during the signaling between base station (BTS) and the portable terminal (MS).

12. network element as claimed in claim 9 (ILR) response is used for sending described user profile from the inquiry of another network element (GK).

13. network element as claimed in claim 9 (ILR), described interface comprise this network element and following MAP interface between one of at least: the attaching position register (HLR) of GSM net, the visitor location register (VLR) of GSM net.

14. a kind of network element (GK) in the communication system, this system comprise a network subsystem (MSC) and

First subsystem (BSS) that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface; With

Second subsystem that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface (WIO, BTS), described second base station sub-system (WIO BTS) can allow first group of mobile subscriber of communication system insert, and comprise:

One or more first network element (AGW; IGW), be used in the future the conversion of signals of automatic network switching system (MSC) and be second subsystem (WIO, packet BTS) and be used for from second subsystem (WIO, packet BTS) is converted to the signal of internet exchange system (MSC),

One or more and the second subsystem (WIO, BTS) second network element (IMC) that one or more base stations (BTS) connect, being used for will be from the second subsystem (WIO, the conversion of signals of base station BTS) (BTS) is the second subsystem (WIO, BTS) packet and being used for from the second subsystem (WIO, BTS) packet is converted to second subsystem (WIO, the signal of base station BTS) (BTS);

The device (IP, LAN), be used for according to be assigned to second subsystem (WIO, second subsystem (WIO, BTS) packet in are transmitted in the network address of network element BTS); And

Described unit comprises the device of the network address of the network element (IMC) that is used for second subsystem (WIO) that is connected with user's the current base station that can communicate by letter with it of portable terminal (MS) (BTS) from another network element (ILR) inquiry.

15. network element as claimed in claim 14, wherein this network element is used for realizing the H.323 function at the outpost of the tax office.

16. network element as claimed in claim 14 (GK), it is characterized in that device (116), be used for when mobile subscriber's portable terminal can (FH-number transform that will identify the mobile subscriber in the communication system when WIO, BTS) base station communication be the network address of second subsystem (WIO) with second subsystem.

17. network element as claimed in claim 14, it is characterized in that device (116), be used for the second subsystem (WIO, BTS) Route Selection is carried out in the calling between first group the user in, as (WIO, each of network address BTS) identifies the response of mobile subscriber's number described in communication system to being transformed to second subsystem.

18. a kind of method for communicating that is used in the communication system, this system comprise an internet exchange system (MSC) and

First subsystem (BSS) that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface; With

Second subsystem that comprises one or more base stations (BTS) of communicating by letter with portable terminal (MS) by air interface (WIO, BTS), described second base station sub-system (WIO BTS) can allow first group of mobile subscriber of communication system insert, and described method comprises:

With the conversion of signals of the base station (BTS) of internet exchange system (MSC) and described second subsystem is the second subsystem (WIO, BTS) packet and being used for the second subsystem (WIO, BTS) packet is converted to the signal of the base station (BTS) of internet exchange system (MSC) and described second subsystem

According to be assigned to second subsystem (WIO, second subsystem (WIO, BTS) packet in are transmitted in the network address of network element BTS); With

When mobile subscriber's portable terminal can (when WIO, BTS) base station communication, be the network address of second subsystem (WIO) with the FH-number transform of the mobile subscriber in the sign communication system with second subsystem.

19. method as claimed in claim 18 also comprises, to the second subsystem (WIO, BTS) Route Selection is carried out in the calling between first group the user in, as (WIO, each of network address BTS) identifies the response of mobile subscriber's number described in communication system to being transformed to second subsystem.

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