WO2008074232A1 - Système réseau ayant divers types de systèmes d'accès sans fil - Google Patents

Système réseau ayant divers types de systèmes d'accès sans fil Download PDF

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Publication number
WO2008074232A1
WO2008074232A1 PCT/CN2007/003728 CN2007003728W WO2008074232A1 WO 2008074232 A1 WO2008074232 A1 WO 2008074232A1 CN 2007003728 W CN2007003728 W CN 2007003728W WO 2008074232 A1 WO2008074232 A1 WO 2008074232A1
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WIPO (PCT)
Prior art keywords
wireless
network
base station
access
radio
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PCT/CN2007/003728
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English (en)
Chinese (zh)
Inventor
Wu Lv
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Huawei Technologies Co., Ltd.
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Publication of WO2008074232A1 publication Critical patent/WO2008074232A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a network system having multiple wireless access systems coexisting. Background technique
  • GSM Global System for Mobile communications
  • the global CDMA network is the second largest mobile communication network in the 2G era. At present, many networks are developing CDMA1X in the future. The future support for higher-speed data services is also a hot spot for equipment vendors and operators.
  • the industry GSM generally adopts WCDMA technology for subsequent evolution.
  • the continuity of voice services is achieved through interoperability between WCDMA and GSM.
  • the GSM network provides voice services as the mainstay, and the data services are supplemented.
  • the voice services provided by the GSM network are very comprehensive.
  • the WCDMA system is the voice service and the data service capability.
  • the two systems cover the same area, and the WCDMA voice service bearer is obvious.
  • the capacity and the GSM voice service carrying capacity are duplicated and invested in construction. The complementarity between the two is not strong, resulting in very high costs.
  • the embodiments of the present invention provide a network system with multiple wireless access systems coexisting, to improve the complementarity of voice services and data, and low networking costs in a network system composed of multiple wireless networks.
  • a network system having multiple wireless access systems coexisting including:
  • the first wireless system has a plurality of base stations supporting the first wireless access system, and the multiple base stations implement continuous service coverage in a certain area, and are used to access the network of the first wireless access system in the certain area.
  • a second wireless system having one or more base stations supporting a second radio access system, implementing continuous coverage in a local area in the certain area, for selecting a user of the second radio access system in the partial area Access the network to provide data services.
  • a network system having multiple wireless access systems coexisting including: a long term evolution LTE system, and other wireless systems different from the wireless access system adopted by the long term evolution system; wherein, the plurality of other wireless systems
  • the base station implements continuous coverage in a certain area, and is used to access users of the other wireless systems in the certain area to the network to provide voice services;
  • the base station of the long term evolution system implements continuous coverage in a local area within a certain area for providing data services to users of the long term evolution system in the partial area.
  • the plurality of base stations in the other wireless system implement continuous coverage in a certain area, and are used to access users of the other wireless systems in the certain area to provide voice services;
  • the base station of the WiMAX system implements continuous coverage in a local area within the certain area for providing data services to users of the WiMAX system within the local area.
  • a network system having multiple wireless access systems coexisting including: an air interface evolved AIE system, and other wireless systems different from the wireless access system adopted by the AIE system; wherein, the plurality of base stations in the other wireless systems Implementing continuous coverage in a certain area for accessing users of the other wireless systems in the certain area to the network to provide voice services
  • the base station of the AIE system implements continuous coverage in a local area within the certain area for providing data services to users of the AIE system in the local area.
  • the data service coverage is implemented in a local area in the area where the voice service is continuously covered, and the coverage of the voice service requirement is fully considered, the demand capacity of the hot data service is maximized, and the performance is optimized to meet different service requirements.
  • the complementarity of voice services and data services in the network system is improved, and the minimum network construction cost is realized.
  • FIG. 2 is a schematic structural diagram of a network system composed of a GSM system and an LTE system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a core network device independent device in a network composed of a GSM system and an LTE system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a core network device in a network composed of a GSM system and an LTE system according to an embodiment of the present invention
  • FIG. 5 is a structural diagram of a network system composed of a WiMAX system and a GSM system according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network system composed of an AIE system and a CDMA system according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a core network of CDMA and AIE according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of centralized management of radio resources according to an embodiment of the present invention. detailed description
  • the high-speed data is selected according to the local area (ie, the hotspot area) in the voice service coverage area.
  • the service needs to implement service coverage for the local area by using a network that mainly provides high-speed data services.
  • the network system providing the voice service and the network system providing the high speed service data may adopt one of a plurality of wireless networks of different wireless access systems.
  • network systems providing voice services such as GSM systems, CDMA systems, etc.
  • network systems providing high speed data services such as Long Term Evolution LTE systems, WiMAX systems, and Air Interface Evolution AIE systems. .
  • the evolution of the WCDMA system developed by the 3GPP standards organization is WCDMA -> HSPA -> EHSPA - > LTE.
  • LTE is the evolution direction of WCDMA, which is mainly to enhance the future wireless communication market of UMTS (including WCDMA system and CDMA2000 system) system.
  • the LTE system mainly provides high-speed data services.
  • the benefits compared to WCDMA systems are reduced latency, increased user data rates, increased system capacity and coverage, reduced operator costs, and flexible use of spectrum resources.
  • the independent LTE system network is composed of an LTE base station BTS100 and an LTE access gateway AGW101, and the base stations 100 can interact through the X2 interface.
  • the LTE network bearer capability goal is to provide a downlink rate of 100 Mbps and an uplink rate of 50 Mbps, with very powerful capacity capabilities.
  • FIG. 2 shows a network system structure in which the LTE system and the GSM system are mixed in this embodiment.
  • the GSM system includes a base station BTS200, a base station controller BSC201, and a GSM core network 203;
  • the LTE system includes a base station 210 and an access gateway AGW 211.
  • base station controller 201 controls and manages base station 200; GSM users in area A access base station 200 and base station controller 201 to the GSM core network.
  • the GSM system primarily provides voice services to GSM subscribers in Region A.
  • the base station 210 in the LTE system implements service coverage in the hotspot area in the area A, that is, the local area A1 and the local area A2 (of course, it may also be three or more local areas, or even only one local area), and access
  • the gateway 211 controls and manages the base station 210; the LTE users of the local area A1 and the local area A2 access the access gateway 211 in the packet core network 213 through the base station 210.
  • the LTE system mainly provides high-speed data services to LTE. users in the local areas Al, A2.
  • the base station deployment of the GSM system and the LTE system can be implemented in various ways.
  • the LTE base station and the GSM base station are separately set to perform overlapping coverage; the LTE base station and the GSM base station are set in a co-station manner to jointly cover the site; the base station processing board supporting LTE is directly inserted into the existing GSM network base station device; setting a new form of GSM + LTE dual-mode base station, etc.
  • the base stations of the local area Al and A2 can adopt different deployment modes, such as: LTE base station and GSM base station are separately set in the local area A1, and a new form of GSM + LTE dual mode base station is set in the local area A2.
  • the packet core network 213 and the GSM core network 203 are independent of each other and interoperate through the communication interface 204.
  • the GSM core network forwards data service requests to the LTE network for bearer; for example: performs unified radio resource management R M, quality of service QoS control, and maintenance functions such as O&M.
  • FIG. 3 shows the simplified block diagram of the network system.
  • the base stations in the four local areas are respectively deployed in different ways (of course, all of them can be the same, or the local areas are the same, and some local areas are different.
  • the deployment mode); the LTE core network and the GSM core network are independent of each other and interoperate through the communication interface.
  • the upgraded GSM core network can implement the AGW with the LTE system by upgrading the existing GSM core network equipment. Interoperability function, supporting unified RRM, QoS, O&M functions between LTE system and GSM system.
  • Interoperability satisfies the harmonious and unified resource management mechanism between the two intergenerational systems, and realizes the network of different standards as the same network, which can realize the access request, service allocation and information identification of the terminal between the two standard core networks.
  • Interacting to realize the advantages of different wireless access systems that is, the GSM network provides voice services, and the LTE network provides high-speed wireless data services, thereby achieving the best bearer strategy between the two systems and improving complementarity.
  • the base station in the hotspot area carries different user services through the GSM network or the LTE network according to the service type initiated by the user equipment UE.
  • the service initiated by the GSM user is a voice service, for the circuit-switched voice service, the service request is forwarded to the core network of the GSM, and is directly managed by the core network of the GSM, and the bearer of the service is completed through the GSM network.
  • the service initiated by the GSM user is the data service of the packet domain, if the rate is relatively low, the request initiated by the user may be implemented by using the GSM network bearer, or may be implemented by the interoperation function between the GSM core network and the AGW.
  • the bearer of the service is allocated to the LTE network bearer. If the rate is relatively high, the GSM core network directly implements the request initiated by the user through the LTE network bearer through the interoperation function between the GSM core network and the AGW.
  • FIG. 4 shows another network system structure of the hybrid network of the GSM system and the LTE system in this embodiment.
  • the core network device 400 is A new form of GSM/LTE integrated core network equipment includes an MSC functional entity 4000, a GSM packet domain entity 4001, and an LTE access gateway entity 4002.
  • the MSC entity 4000 completes the circuit domain core network function of the GSM network, and is used for voice and circuit type data services.
  • the main functions include completing voice service and basic circuit type data bearer service, system roaming and switching between GSM and LTE, and guaranteeing The security features of the network, support for relocation between the GSM access network and the LTE base station, and the like.
  • the GSM packet domain entity 4001 mainly performs the functions of the GPRS GGSN and the SGSN.
  • the main functions include resource grant control, routing and forwarding functions, mobility management functions, user data management functions, and logical link management functions.
  • the access gateway entity 4002 supports the core network access gateway function of LTE.
  • the core network mode of GSM and LTE as shown in FIG. 4 has powerful network capabilities, good system cooperation, flexible deployment, simple architecture, convenient porting, unified coordination of radio resource management, etc. Advantage.
  • the above-mentioned GSM system and the LTE system are integrated in the networking mode, and the high-speed data service is carried on the access network device implemented by the LTE technology according to the type of the service request initiated by the user terminal, and the voice service is carried on the GSM device, and the voice service is carried over the GSM device.
  • the mechanism for unified management and optimization of different standards can ensure that different systems will not affect each other within the same coverage, and the utilization of wireless resources will be optimized.
  • the above networking method also breaks the step-by-step evolution step of GSM->GPRS->EDGE->WCDMA->HSPA->EHSPA->LTE, and utilizes the capacity of LTE based on the perfect coverage capability of the existing GSM network. Capabilities, complementing voice and data services.
  • the adoption of this new intergenerational networking model avoids the problem of overcosting due to the construction of a simple data network.
  • Fig. 5 shows a network system structure in which the WiMAX system and the GSM system are mixed in this embodiment.
  • the GSM system comprises a base station BTS 500, a base station controller BSC 501 and a GSM core network 512;
  • the WiMAX system comprises a base station BS 510 and an access service network - gateway ASN-AGW 511. ;
  • the plurality of base stations 500 in the GSM system implement continuous coverage in the area M, the base station controller 501 controls and manages the base station 500; the GSM users in the area M access the GSM core network 512 through the base station 500 and the base station controller 501.
  • the GSM system mainly provides voice services to GSM users in the area M.
  • the base station BS 510 in the WiMAX system implements service coverage in the hotspot area in the area M, that is, the local area M1 (of course, may also be two or more local areas), and the access service network-gateway 511 controls the base station 510.
  • the WiMAX user of the local area M1 accesses the service network (such as the Internet network) through the base station 510 and the access service network-gateway 511.
  • the WiMAX system mainly provides high-speed data services to WiMAX users in local area M1.
  • the base station BS in the WiMA system and the base station of the GSM system can be deployed in various ways as described above.
  • the base station controller 501 of the GSM system and the access service network-gateway ASN-GW in the WiMAX system respectively access the entities in the packet domain network to unify WiMAX users and GSM users.
  • Management such as: WiMAX users and GSM users
  • the information is uniformly stored on the HSS.
  • the unified AAA server performs authentication and charging on WiMAX users and GSM users to ensure continuity between WiMAX and GSM services and support mobility between WiMAX and GSM.
  • the above GSM + WiMAX networking mode can not only fully utilize the existing coverage of the GSM network, but also fully utilize the high-speed data service capability of WiMAX.
  • Fig. 6 shows a network system structure in which the AIE system and the CDMA system are mixed in this embodiment.
  • the base station BTS600 of the CDMA system, the base station NodeB601 of the AIE system, the base station controller 602 and the core network 603 are included.
  • the plurality of base stations 600 in the CDMA system implement continuous coverage in the area X
  • the base station 601 in the AIE system implements service coverage in the hotspot area in the area X, that is, the local area XI (of course, it may also be two or more partial areas)
  • the base station controller and the core network device of the CDMA system and the AIE system are integrated.
  • the core network supporting CDMA and AIE integration includes: a Packet Data Serving Node (PDSN), a Mobile Switching Center (MSC), a Service Control Point SCP, an AAA Server, and a Home Location Register (HLR).
  • PDSN Packet Data Serving Node
  • MSC Mobile Switching Center
  • SCP Service Control Point SCP
  • AAA Server an AAA Server
  • HLR Home Location Register
  • the CDMA system is mainly used to provide voice services to the CDMA users in the area X.
  • the AIE system adopts advanced air interface technology in the base station part, and adopts OFDM and MIMO technologies in the uplink and downlink, and can provide broadband mobile network data with a data rate of up to 210 Mbps in a 20 MHz bandwidth. Service, therefore, AIE mainly provides data services to AIE users in local area XI. Since the core network devices are all unified, the message flow is the same for the user-initiated service request, whether it is a voice service or a data service. Therefore, in the system, the voice service is mainly allocated to the CDMA base station according to the type of the service request. On the bearer, the data service is carried to the AIE base station.
  • the base station in the AIE system and the base station of the CDMA system can be deployed in various ways as described above.
  • the base station controller and the core network equipment of the CDMA system and the AIE system adopt an integrated structure, which facilitates unified management of CDMA users and AIE users, and is easy to implement for the CDMA system and 8
  • the wireless resources of the AIE system are uniformly controlled and managed.
  • the corresponding base station controller and core network of the CDMA system and the AIE system can also be independently set, and the core networks interoperate through the communication interface, and the implementation is similar to the implementation of the network system shown in FIG. 2.
  • the networking method of Figure 6 also breaks the gradual evolution step of CDMA- > CDMA2000 lx _ > CDMA2000 EV-DO -> CDMA2000 EV-DV -> AIE, skipping the EV-DO, EV-DV phase.
  • This kind of networking method fully considers how to solve the coverage seamlessness of voice service requirements, maximize the demand capacity of hot data services, and realize the minimum network construction cost requirement based on the performance optimization that meets different service requirements.
  • the radio resources of the multi-standard communication network can be managed by setting a Centralized Radio Resource Management (CRRM) unit.
  • CRRM Centralized Radio Resource Management
  • FIG. 8 An implementation in this embodiment is shown in FIG. 8.
  • the CRRM unit is connected to the radio resource management unit 1 and the radio resource management unit 2 (not limited to two radio resource management units, such as three or more), and the radio resource management units 1, 2 are respectively single-standard communication networks.
  • a unit for performing radio resource management, for reporting radio resource information of each single-standard communication network to the CRRM unit (the radio resource information may be load information, cell information, radio parameters, access parameters, etc.), such as BSC in GSM , AGW in LTE.
  • the CRRM unit is configured to perform unified management on radio resources of the multi-standard communication network according to the radio resource information reported by the radio resource management unit; the CRRM interfaces the information of various radio access systems, that is, various radio access systems are adopted.
  • the information reported by the RRC unit is converted into a identifiable format, and the delivered information is converted into a format that can be recognized by the RRC unit of the corresponding radio access system; the CRRM unit can be added independently in the multi-standard communication network.
  • the physical entity which can also be a logical functional entity, is combined with a network element already in the multi-standard communication network.
  • the unified management of radio resources that CRRM can implement can include centralized load control, centralized power control, centralized handover control, and the like.
  • Radio resources are optimized, for example: CRRM based on configured optimization algorithms and radio resource information
  • the parameters related to the radio resources of each standard communication network are configured and adjusted to optimize the multi-standard communication network.
  • the above-mentioned hybrid networking and similar networking modes can achieve the lowest network construction cost under the premise of satisfying the coverage requirements of voice service requirements, maximizing the demand capacity of hotspot data services, and optimizing the performance of different service requirements. Demand.
  • GSM network Take a typical city GSM network as an example: The GSM network now has 1000 sites for GSM base stations and supports a network capacity of 8 million users. At present, voice traffic accounts for 95% of the network, and data traffic is 5%. In the next five years, voice traffic accounts for only 70%, and data traffic increases by 30%. In order to meet this market demand in the future. Adopting the traditional evolution of the industry is to build a hybrid networking mode of GSM + WCDMA. Considering that the coverage capability of WCDMA is weaker than GSM, it is estimated that more than 1000 base stations should be invested in WCDMA networks to achieve continuous coverage of WCDMA.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système réseau ayant divers types de systèmes d'accès sans fil coexistant. Dans le système réseau, un premier système sans fil contient de multiples stations de base supportant un premier mode d'accès. Les multiples stations de base réalisent une couverture continue dans une zone particulière et permettent aux utilisateurs sélectionnant le premier mode d'accès dans la zone particulière d'accéder au réseau et fournissent aux utilisateurs un trafic à faible débit. Un second système sans fil contient une ou plusieurs stations de base supportant un second mode d'accès. L'une ou les stations de base réalisent une couverture continue dans des zones locales à l'intérieur de la zone particulière et permettent aux utilisateurs sélectionnant le second mode d'accès dans la zone locale d'accéder au réseau et fournissent aux utilisateurs un trafic à haut débit.
PCT/CN2007/003728 2006-12-21 2007-12-21 Système réseau ayant divers types de systèmes d'accès sans fil WO2008074232A1 (fr)

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CNA2006101702492A CN101207913A (zh) 2006-12-21 2006-12-21 具有多种无线接入***共存的网络***

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