WO2008089660A1

WO2008089660A1 - Method, device and radio network system of unifying radio accessing

Info

Publication number: WO2008089660A1
Application number: PCT/CN2008/000134
Authority: WO
Inventors: Zhengfei Ren; Mingjiang Xie; Yong Qiu; Hongzhuo Zhang; Yongfeng Deng
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-01-19
Filing date: 2008-01-18
Publication date: 2008-07-31
Also published as: CN101227708A

Abstract

A method of unifying radio accessing is disclosed, and the method involves: a multi-mode base station supporting multiple radio accessing standards in radio accessing network accesses a user equipment supporting multiple radio accessing standards to the network; and the data based on the multiple radio accessing standards is transmitted through a transmission carrier network between the multi-mode base station and other network nodes. A multi-mode base station is also disclosed, and the base station involves: multiple protocol processing units are used for processing the data based on different radio accessing standards respectively; an interface unit is used for processing the data outputted from the multiple protocol management units according to the transmission carrier protocol supported by the transmitting network and transmitting to the transmission network, and receiving and managing the data received from the transmission network, and transmitting to the corresponding protocol management unit. A radio network system is also disclosed at the same time.

Description

Method, device and wireless network system for unified wireless access

The present invention relates to wireless communication technologies, and in particular, to a method, an apparatus, and a wireless network system for unified wireless access. Background technique

With the development of wireless communication technologies, more and more wireless access technologies (RAT: Radio Access Technology) have been applied. These different RAT technologies include GSM technology, WCDMA technology, WiMAX technology, LTE technology, AIE technology, CDMA2000 technology, and the like. Different radio access technologies constitute different base station systems, such as base station BTS in GSM technology; base station NodeB in WCDMA technology; base station BS in WiMAX technology; base station eNodeB in LTE technology.

In current mobile communication network systems, base stations typically form a single device node. As shown in Figure 1, in the GSM system, the base station BTS and the base station controller BSC are connected through an Abis interface, and the BSC and the MSC are connected through an A interface. Voice data and signaling on both the Abis and A interfaces are transmitted via PCM. In GSM, PCM code multiplexing is used to achieve multiplex transmission. Time division multiplexing TDM technology divides the sampling period into several time slots (TSn, n=0, 1 , 2, 3, . . . . ), and the sampling value of each signal occupies a certain time slot in a certain order. A technique that combines multiplexed digital signals and transmits them independently using the same channel.

As shown in FIG. 2, in the long-term evolution LTE system, each eNodeB is connected through an X2 interface, and the eNodeB and the mobility management entity/user plane entity MME/UPE are connected through an S1 interface. At present, the user service and signaling data on the S1 and X2 interfaces are packet data packets based on IP technology. Therefore, IP technology is used as the network layer technology at the network layer, because the IP network does not depend on the physical layer of the underlying network. And link layer technology, so 3GPP does not specify the physical layer and link layer of the packet or interface. As shown in FIG. 3, in the WiMAX system, the base stations BS are interconnected through the R8 interface, and the BS and the access service network-gateway ASN-GW are connected through the R6 interface, and the ASN-GW and the connection service network CSN are passed. The R3 interface is connected. At present, the user service and signaling data on the interface in the WiMAX system are packet data packets based on EP technology, so IP technology is used as the network layer technology at the network layer, because the IP network does not depend on the physics of the underlying network. Layer and link layer technologies, so IEEE 802.16 does not specify the physical layer and link layer of the packet domain interface.

As shown in Figure 4, in the CDMA2000 system, it is divided into two categories: circuit domain and packet domain according to the service type. Among them, the Al, A2, A5, A3, and A7 interfaces transmit circuit-type services and their signaling with high real-time requirements, while the A8, A9, A10, and All interfaces transmit user packet data packets and their signaling. For the interface reference point of the circuit domain, in order to ensure real-time and reliable transmission of service and signaling information, the physical layer technology adopts traditional circuit transmission technologies, such as: T1/E1, DS0 link, or higher rate T3, OC3 Etc., the data transmission layer uses the No. 7 signaling system or the asynchronous transmission mode ATM technology. For each interface reference point in the packet domain, the user service data is a packet data packet based on IP technology, so the A8, A9, A10, and All interfaces in the packet domain use IP technology as the network layer technology. Since the IP network does not depend on the physical layer and link layer technologies of the underlying network, the IOS standard does not specify the physical layer and link layer of the packet domain interface.

As shown in FIG. 5, in the WCDMA system, the base station NodeB and the radio network controller RNC are interconnected through the Iub interface, and the RNC and the RNC are connected through the Iur port, and the RC and the mobile switching center/visit location register MSC/VLR are connected. Connected through the Iu-CS interface, the RNC and the SGSN are connected by Iu-PS. At present, the data link layer in WCDMA is transmitted by ATM, and AAL5 and AAL2 are used as two ATM adaptation layer protocols to complete the data adaptation function, that is, the data structure of the high-level application is represented as the cell structure of the ATM layer, and Required operational and management features. AAL5 is used for non-real-time connection-oriented and connectionless data transmission. It is the bearer for ATM signaling and general data transmission. AAL2 is designed for variable bit rate data streaming and is used to transport voice services.

The interface technology adopted by the currently implemented multi-standard base station is a multi-standard interface, and the interface can Can be multiple independent distributed interfaces. That is, if the multi-standard base station is configured with an LTE base station, the base station supports an S1/X2 interface, which is transmitted by using an IP transmission network, and may be carried on an optical fiber or on an Ethernet. If the multi-standard base station is configured with a GSM base station, the base station supports the Abis interface and the A interface, and uses E1 physical medium transmission. If the multi-standard base station is configured with a WiMAX base station, the base station supports the R8 interface. For other wireless access technologies or some future access technology base station may be other interfaces.

When various single-mode base stations are combined to provide multi-access system support, various transmission bearers exist in parallel and are wired separately, which not only has a large workload and a high cost, but also increases the complexity of interface implementation and processing, possibly causing physical The waste of carrying. Summary of the invention

Embodiments of the present invention provide a method, a device, and a wireless network system for unified wireless access based on a multimode base station, so as to provide a unified transmission bearer in a radio access network, thereby conserving resources and reducing implementation complexity.

A method for unified wireless access, comprising the steps of:

A multimode base station supporting multiple radio access systems in a radio access network accesses a plurality of radio access system user equipments to the network;

A multi-mode base station and other network nodes employ a transport bearer to transmit data based on the plurality of radio access systems.

A method for unified wireless access, comprising the steps of:

Processing uplink data based on different wireless access systems by one transmission bearer in a multimode base station supporting multiple radio access systems;

And transmitting the uplink data to a transport bearer network based on the one type of transport bearer, and transmitting the data to a corresponding network node.

A method of processing data in a multimode base station, comprising the steps of:

A multimode base station supporting multiple radio access standards is processed according to a protocol adopted by the radio access system Upsizing data based on different radio access systems, and obtaining user data on the bearer layer; processing the user data separately according to the same transport bearer, and obtaining data that can be transmitted on the transport bearer network based on the same transport bearer .

A multi-mode base station supporting multiple radio access systems processes uplink data based on different radio access systems according to a protocol used by the radio access system, and obtains data of the bearer layer;

The data of the bearer layer is separately processed according to the same transport bearer, and data that can be transmitted on the transport bearer network based on the same transport bearer is obtained.

A multimode base station comprising:

a plurality of protocol processing units, respectively configured to process data based on different wireless access technologies; and an interface unit, connected to the plurality of protocol processing units, configured to process the plurality of transmission bearer protocols supported by the transport network The data output by the protocol processing unit is sent to the transport network, and the data received from the transport network is received and processed and transmitted to the corresponding protocol processing unit.

An interface conversion device includes:

a receiving module, configured to receive data;

a determining module, configured to determine whether the received data is based on a transport bearer that is the same as a transport bearer network that transmits the data or a transport bearer supported by a target node that receives the data;

a processing module, configured to adapt the received data to a transport bearer supported by the transport network support or the target node when determining that the transport bearer is different;

And a sending module, configured to send data to the transport bearer network and the target node.

A base station controller includes:

a receiving module, configured to receive data based on a GSM system;

a determining module, configured to determine whether the received bearer based on the received data is the same as the transport bearer supported by the device, and determining whether the data to be sent is the same as the transport bearer supported by the transport network;

a processing module, configured to: when the transmission bearer is different from the transmission bearer of the device, Adapting to the transport bearer supported by the device, and adapting the data to be transmitted to the transport bearer supported by the transport network when determining the transport bearer different from the transport bearer network;

Send module, used to send data.

A communication device comprising:

a receiving module, configured to receive data based on a UMTS system;

a determining module, configured to determine whether the data to be sent is the same as the transmission bearer supported by the transport network; and the processing module, configured to adapt the data to be sent to the transport supported by the transport network when determining that the transport bearer is different from the transport bearer of the transport bearer network Carrying

Send module, used to send data.

A wireless network system, comprising:

a transport bearer network for transmitting data through a unified transport bearer;

a first network node, connected to the transport network, is configured to access user equipments of different radio access technologies to the network, where the user equipments based on different radio access technologies are processed according to the transport bearer manner supported by the transport network Transmitting and transmitting the data to the transport bearer network, and collecting data from the bearer bearer network and transmitting the data to the user equipment;

The second network node includes a plurality of network nodes supporting different wireless access technologies, configured to receive uplink data transmitted by the transmission network, and send downlink data to the first network node by using the transmission network.

The use of a unified transmission bearer to transmit data in a wireless access network not only facilitates the deployment of the network, but also reduces the complexity of implementation. If you upgrade to a multimode base station based on the original site, you can make full use of the original transmission resources and significantly reduce operating costs. DRAWINGS

1 is a schematic structural diagram of a GSM network system in the prior art;

2 is a schematic structural diagram of an LTE network system in the prior art;

3 is a schematic structural diagram of a WiMAX network system in the prior art; 4 is a schematic structural diagram of a CDMA2000 network system in the prior art;

5 is a schematic structural diagram of a WCDMA network system in the prior art;

6A is a schematic diagram of networking of a bearer of a radio access network by using IP technology in an embodiment of the present invention;

FIG. 6B is a schematic structural diagram of a multimode base station implementing an IP transmission bearer according to an embodiment of the present invention; FIG. 7A and FIG. 7B are respectively schematic diagrams of a user plane protocol stack and a control plane protocol of an LTE and WiMAX network system according to an embodiment of the present invention; ;

7C is a schematic diagram of networking in which an IP technology is used as a bearer of a radio access network and data protocol matching is completed by an interface conversion apparatus according to an embodiment of the present invention;

7D and FIG. 7E are schematic diagrams showing the mutual conversion between the user plane protocol stack and the control plane protocol stack of the ATM bearer protocol and the user protocol stack and the control plane protocol stack of the IP bearer protocol according to the embodiment of the present invention; FIG. 7F and FIG. 7G are respectively FIG. The user plane protocol stack and the control plane protocol stack of the PCM bearer protocol and the user protocol stack and the control plane protocol stack of the IP bearer protocol are mutually converted according to the embodiment of the present invention; FIG. 8 is a schematic structural diagram of an interface conversion apparatus according to an embodiment of the present invention; ;

9A is a schematic diagram of networking in which an Ethernet is used as a transmission bearer of a wireless network according to an embodiment of the present invention; and FIG. 9B is a schematic diagram of networking in which a xDSL is used as a transmission bearer of a wireless network according to an embodiment of the present invention; A schematic diagram of a TDM system as a group of wireless network transmission bearers;

10B and 10C are respectively schematic structural diagrams of a multi-mode base station for implementing a TDM transmission bearer according to an embodiment of the present invention;

11 and FIG. 12 are schematic diagrams of carrying an IP protocol stack on a TDM and an ATM protocol stack on a TDM according to an embodiment of the present invention;

13 is a schematic diagram of a TDM access network architecture using an independent interface conversion device according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of a TDM access network architecture using microwave as a relay transmission according to an embodiment of the present invention; Figure

15A is a schematic diagram of a group of an ATM system as a wireless network transmission bearer according to an embodiment of the present invention;

15B and FIG. 15C are schematic structural diagrams of a multimode base station implementing an ATM transmission bearer according to an embodiment of the present invention;

16 is a schematic diagram of converting a GSM transport protocol stack into an ATM transport protocol stack in an embodiment of the present invention;

17 is a schematic diagram of a WCDMA transmission protocol stack in an embodiment of the present invention;

18 is a schematic diagram of a layered structure of an IP over ATM protocol according to an embodiment of the present invention;

FIG. 19 is a schematic diagram of converting an A1 interface protocol stack into an ATM transport protocol stack according to an embodiment of the present invention; FIG.

FIG. 20 is a schematic diagram of converting an A2 interface protocol stack into an ATM transport protocol stack according to an embodiment of the present invention. detailed description

In this embodiment, a unified transmission bearer is used to transmit data between the multimode base station and the upper node. The multi-mode base station (or multi-standard base station) refers to a protocol processing module corresponding to multiple access technologies respectively, and includes base stations formed in the same node device, and the protocol processing modules can share part of device resources, such as node devices. Backplane bus, CPU of the node device, memory of the node device, and even some board resources. The node device includes the physical expansion of the node device, for example, the capacity of the node device is expanded by a chassis stack or the like. The multimode base station and its superior nodes are collectively referred to as network nodes, and each protocol processing module within the multimode base station is similar to a logical base station.

The protocol processing module included in the multi-mode base station is a GSM protocol processing module corresponding to the GSM system, corresponding to the UMTS protocol processing module of the UMTS system, corresponding to the LTE protocol processing module of the LTE system, corresponding to the WiMAX protocol processing module of the WiMAX system, And corresponding to it Two or more of the protocol processing modules of the wireless system; correspondingly, the upper node of the multimode base station may include a wireless network controller of the GSM base station controllers BSC, UMTS (including WCDMA and TD-SCDMA systems) The RNC, the LTE access gateway aGW (possibly corresponding specific nodes are the mobility management entity MME and the user plane entity UPE), the WiMAX gateway GW, and two or more of the other possible upper nodes. In addition, the upper node may also be a multi-mode upper node, that is, the upper node includes multiple logical upper nodes, such as BS (, aGW RNC, etc.).

The transmission bearer used by different technologies in a single-mode base station is different. For example, PCM is used as a transmission bearer in the GSM system, and ATM or IP can be used as a transmission bearer in UMTS, in LTE or WiMAX. IP is used as the transport bearer. Therefore, in this embodiment, a unified transmission bearer is used to transmit data between the multi-mode base station and the upper-level node, and the unified transmission bearer may be an IP transmission bearer, an asynchronous transmission mode ATM transmission bearer, and a time division multiplexing TDM transmission bearer. A transmission bearer.

Fig. 6A shows an example of a network system for transmitting data between the multimode base station and its upper node in the IP transmission network in this embodiment. The multimode base station 60 is interconnected by the IP bearer network 61 and the base station controller BSC 62. The access gateway aGW 63, the gateway GW 64 and the radio network controller RNC 65 and various possible superior nodes 66 are interconnected. The IP bearer network 61 may be an Ethernet or a leased subscriber digital line xDSL; user data and control data of each logical base station in the multimode base station 60 are carried over the IP.

FIG. 6B shows the structure of a multimode base station 60 in this embodiment, which includes a GSM protocol processing unit 600, a UMTS protocol processing unit 601, an LTE protocol processing unit 602, a WiMAX protocol processing unit 603, and an IP interface unit 604. The GSM protocol processing unit 600, the LTE protocol processing unit 602, and the WiMA protocol processing unit 603 respectively process the received uplink data and downlink data according to the protocol of the corresponding wireless access system; the IP interface unit 604 is configured to send and receive data according to the IP protocol. Process the transmitted data and the received data. Of course, the multimode base station 60 is not limited to the above. The protocol processing unit may also include other possible protocol processing units, such as the Air Interface Evolution AIE protocol processing unit.

A variation of the multimode base station shown in FIG. 6B is that the IP interface unit is independently set up with a plurality of protocol processing units, that is, the IP interface unit exists as a separate device, and between multiple protocol processing units in the multimode base station. Interacting through the communication interface, which treats the data in the same way.

Between the protocol processing unit and the interface unit of the multi-mode base station, the data encapsulated according to the bearer layer protocol may be transmitted according to the transport bearer protocol used by the wireless system corresponding to the protocol processing unit, and the user data on the bearer layer may also be transmitted. If the data is loaded according to the bearer layer protocol, the IP interface unit completes the conversion between the IP protocol and its protocol. For example, GSM protocol processing unit 600 transmits protocol data based on PCM bearers to IP interface unit 604, which translates it into protocol data based on IP bearers. If the user data on the bearer layer is transmitted, the IP interface unit performs IP encapsulation on the uplink data and correspondingly decapsulates the received downlink data. For example, the GSM protocol processing unit 600 transmits the user data that is not encapsulated by the bearer layer to the IP interface unit 604, and the interface unit 604 encapsulates it into an IP packet and transmits it to the bearer network; correspondingly, the IP interface unit 604 receives the downlink. After the IP packet is packetized, it is decapsulated and transmitted to the corresponding protocol processing unit.

The protocol processing unit of the multimode base station 60 is similar to a logical base station. Each protocol processing unit can be assigned an IP address, or the entire multimode base station can be assigned an IP address.

When an IP address is assigned to each of the protocol processing units in the multimode base station 60, the source IP address and the destination IP address may be determined according to the source of the data (each protocol processing unit) according to the unit 604, and then the user data is encapsulated into The IP data packet is sent to the IP bearer network; for the received downlink data, since the IP address of each protocol processing unit is different, the data packet can be distinguished according to the destination IP address, and each data packet is sent to the corresponding protocol processing unit. Go in.

When the multimode base station 60 has only one IP address, the IP interface unit 604 will depend on the source of the data. Determine the destination IP address, that is, the source can be learned based on the port. For the uplink data packet, the IP interface unit 604 determines the destination IP address according to the source of the data (determined by the interface of each protocol processing unit and the IP interface unit), and the source IP address uniformly fills in the IP address of the multimode base station. For example, when the IP interface unit 604 determines that the uplink data is from the GSM protocol processing unit 600, the IP address of the corresponding upper-level node base station controller 62 is used as the target address, and the IP address of the multi-mode base station 60 is used as the source address; for example, determining the uplink When the data comes from the LTE protocol processing unit 602, the IP address of the corresponding upper node gateway 64 is used as the target address, and the IP address of the multimode base station 60 is used as the source address.

For the downlink data packet, although the destination IP address is the IP address of the multimode base station 60, the data packets of the respective protocol processing units can be distinguished according to the source IP address therein. For example, if the downlink data packet is determined to be from the base station controller 62 according to the source IP address, the downlink data packet is transmitted to the GSM protocol processing unit; for example, the downlink data packet is determined to be from the wireless network according to the source IP address. When the controller 65, the downlink data packet is transmitted to the UMTS protocol processing unit.

When IP is used as the unified transport, the user plane protocol stack is shown in Figure 7A. User data is used to negotiate UDP as the transport protocol on the IP layer, and an encapsulation protocol is used on the UDP layer to encapsulate user data. The specific encapsulation protocol The GTP protocol, the GRE protocol, or the FP protocol can be used, and the user data is encapsulated in the encapsulation protocol. Since the GTP protocol is adopted in UMTS, the GTP protocol is also planned in the LTE/SAE system. Therefore, the GTP protocol is recommended as the encapsulation protocol. The protocol stack of the control plane is shown in Figure 7B. The transport layer can use the SCTP protocol and the application layer protocol on top of the SCTP layer. The corresponding application layer protocols of different wireless systems are different. For example, for UMTS, the application layer protocol is NBAP protocol, and for LTE, the application layer protocol is eRANAP protocol. However, the interface unit does not need to distinguish the application layer protocol, and only needs to send the application layer data packet to each protocol processing unit according to the IP address.

Since the protocol stacks of LTE and WIMAX are identical to the protocol stacks described in FIG. 7A and FIG. 7B, the corresponding upper node access gateway 63 and gateway 62 need not be modified. For UMTS, the access bearer may be an IP transport bearer or an ATM transport bearer; if IP transport is used The bearer has the same protocol stack as that of Figures 7A and 7B. For GSM, the transmission mode adopted by the upper-level node base station controller 62 is non-IP mode, or the upper-layer node radio network controller 65 of the UMTS adopts the ATM transmission bearer mode, and implements the IP bearer mode and other transmissions through an interface conversion device. Mutual conversion of protocol stacks between bearer modes.

As shown in Fig. 7C, the multimode base station 70 is used with the independently arranged interface switching device 72.

The IP network 71 transmits data, with IP as a unified physical layer bearer; between the interface switching device 72 and the base station controller BSC 73 is a PCM transport bearer (transmission voice), and between the interface switching device 72 and the radio network controller RC 74 The ATM transport bearer, between the interface switching device 72 and the gateway GW 75, is an IP transport bearer. The function performed by the interface switching device 72 includes: performing protocol conversion on the data transmission bearer to the PCM transmission bearer for the data sent to the base station controller BSC 73 according to the target IP address in the uplink data, and then transmitting the data to the base station in the PCM transmission bearer manner. The controller BSC73 performs protocol conversion on the data transmission bearer to the ATM transmission bearer for the data sent to the radio network controller RNC 74, and then transmits the data to the radio network controller 74 in the ATM transport bearer manner; for the gateway GW 75 The number of uplinks is not directly converted to the protocol and sent directly to the gateway GW75. According to the source of the downlink data, the data from the base station controller BSC73 is subjected to protocol conversion of the PCM transmission bearer to the IP transmission bearer, and the data from the radio network controller RNC 74 is subjected to protocol conversion of the ATM transmission bearer to the IP transmission bearer, and then The converted data is sent to the IP network. When it is difficult to modify the interface of the superior node, it is a better way to set the interface conversion device independently.

The mutual conversion of the user plane protocol stack between the ATM bearer protocol and the IP bearer protocol is shown in FIG. 7D, and the mutual conversion of the control plane protocol stack between the ATM bearer protocol and the IP bearer protocol is as shown in FIG. 7E. The mutual conversion of the user plane protocol between the PCM bearer protocol and the IP bearer protocol is shown in Fig. 7F, and the mutual conversion of the control plane protocol between the PCM bearer protocol and the IP bearer protocol is as shown in Fig. 7G.

FIG. 8 is a schematic structural diagram of an interface conversion apparatus according to the embodiment, which mainly includes: a receiving module 800, a determining module 810, a processing module 820, and a sending module 830; the receiving module 800 receives data; and the determining module 810 receives the received information according to the identifier. The transmission bearer used by the data; When the received data carries the transmission bearer different from the transport node supported by the upper node (ie, the target network element) or the transport network, the data is transmitted to the processing module 820; otherwise, the data is directly transmitted to the sending module 830; 820 performs protocol conversion on data (the conversion process is as described above) or performs protocol encapsulation processing on the data; the sending module 830 is configured to send the data to the bearer network.

Although the interface switching device and the upper node corresponding to the multimode base station 70 are independent of each other in FIG. 7C, the interface conversion device may be disposed as a module inside the upper node. In this configuration, it may be existing. A determination module and a processing module are added to the base station controller or the radio network controller, and the receiving module and the sending module may be existing modules in the base station controller or the radio network controller. For example, the switching means is provided inside the base station control BSC 37, and at this time, the functions of the judging module and the processing module are the same as those of the aforementioned converting means. For example, the conversion device is disposed inside the radio network controller RNC74. At this time, the data received from the bearer network does not need to be judged, and the judging module only judges whether the transmission bearer supported by the device and the transport network is the same. The data to be sent is adapted to the transport bearer supported by the transport bearer network. When the conversion device is set in the GW and aGW, it is the same as the setting in the RNC.

In another implementation, the interface conversion device may also be disposed in the same physical entity as the upper node, and each device interacts through the internal interface. In this structure, the protocol conversion performed by the interface conversion device on the data is the same as the foregoing, and will not be described again.

Figure 9A shows a specific example of using Ethernet as an access bearer. The multimode base station 90 is linked to each other via the Ethernet 91 and the superior nodes BSC92, aGW93 GW94, NC95 and various possible superior nodes 96. In this example, the IP interface unit of the multimode base station 90 provides an Ethernet interface network card function, data buffering, and pre-processing functions. The IP interface unit determines the received data stream according to the destination IP address or according to the source IP address. It is sent to each protocol processing unit. For the data packets sent from each protocol processing unit, the IP interface unit encapsulates and adds the corresponding source IP address and destination IP address to the transmission network.

The interface conversion module that completes the protocol conversion function in this example is placed in each upper node. Due to In a single-mode base station, a PCM link is used between the BSC and the base station. Therefore, in this example, an interface switching device 920 is added to the BSC for protocol stack conversion (the interface board of the BSC can also be directly modified); An interface conversion module 950 is added to the RNC that only provides the ATM for protocol stack conversion (the interface board of the RNC can also be directly modified).

Figure 9B shows an example of using xDSL as an access network bearer. Modem Modem, DSLAM uses xDSL to the broadband access server BRAS to provide an access bearer between the multimode base station and the network. From the Modem to the multimode base station, an Ethernet network port is provided, so the multimode base station can still It is considered to be linked to each superior node through an IP network. In this example, the functional requirements of each node are the same as those of FIG. 9A, and will not be described again. This example provides a solution that can be used in practical applications, that is, if the operator has difficulty in network cabling or is too costly, the IP link can be provided by renting an xDSL line.

The IP transmission network is used as a unified access bearer between the multi-mode base station and its upper-level nodes, which facilitates the deployment of the network by the operator. In addition, from the perspective of development trend, the IP transmission bearer will be the development direction, and the WiMAX technology for providing data services and The latest evolution technologies of LTE, such as LTE, use IP as a bearer, and its operating cost is low. Operators can even lease xDSL lines as bearers.

FIG. 10A shows an example of a network system for transmitting data between a multimode base station and its upper node in the TDM transmission network in the embodiment, including: a multimode base station 100, a time division multiplexing TDM system 101, and a corresponding upper node 102, a superior The node 102 includes upper nodes corresponding to base stations in a plurality of wireless access systems.

If the multimode base station 100 is upgraded based on the original site, there is generally a transmission medium such as E1 or optical fiber. It is necessary to consider the reuse of these transmission media. Therefore, it can be used in a time division multiplexing TDM system 101. Time division multiplexing is used to provide different transmission bearers.

The TDM system 101 multiplexes different transmission bearers into the same TDM system by time division. For example, part of the time slot 1010 is used to carry PCM voice, part of the time slot 1011 carries IP data traffic, and part of the time slot 1012 carries ATM data. Unified cooperation between the multimode base station 100 and the superior node 102 Tune resources. For example, a time slot for transmitting PCM voice is uniformly determined, and a time slot for transmitting an IP data packet. The unified coordination resources can be implemented in various ways. For example, the time slots for transmitting PCM voice, ATM data packets, and IP data packets can be configured in a static configuration manner, and the allocated time slots are fixed in the service process; The time slot is configured in a dynamic manner. If the traffic between different bearers changes, for example, the IP service is increased and the PCM voice service is reduced, the resources are adjusted on the TDM transmission bearer between the multimode base station and the upper node. .

When using TDM to carry IP data packets, it is recommended to avoid allocating resources for users or for logical base stations. For example, user A should not be assigned a certain time slot to carry user A's IP data, and user B is allocated another time. The gap carries the IP data of User B, and these resources should be uniformly scheduled. For example, if some time slot allocations are used as IP transmissions, then all users can use these time slot resources, and the nodes can use a unified scheduling. The reason for this is that the IP transmission itself utilizes the principle of statistical multiplexing, so a unified scheduling of resources is required.

FIG. 10B shows the structure of a multimode base station 100 in this embodiment, which includes a GSM protocol processing unit 1000, a UMTS protocol processing unit 1001, an LTE protocol processing unit 1002, a WiMAX protocol processing unit 1003, and a TDM interface unit 1004. The functions of the protocol processing units are the same as those of the protocol processing unit in the aforementioned multimode base station. Of course, other multi-mode base stations 100 may also include other possible protocol processing units.

The protocol processing module in the multi-module base station 100 and the TDM interface unit 1004 transmit non-protocol data, and the interface unit 1004 includes a PCM bearer processing module 1004-1, an ATM bearer processing module 1004-2, and an IP bearer processing module 1004-3. And the TDM interface processing module 1004-4. The PCM bearer processing module 1004-1 connects the PCM time slot to the associated switching network board; the ATM bearer processing module 1004-2 is configured to process the ATM bearer on the TDM; and the IP bearer processing module 1004-3 is configured to process the TDM. The IP bearer is used; the TDM interface processing module 1004-4 is configured to send data to and receive data from the bearer network, that is, as an external communication interface.

For uplink data: the bearer processing module in the TDM interface unit 1004 receives the uplink The data is processed in advance, and then the TDM interface processing module 1004-4 transmits the processed data to the corresponding TDM time slot for transmission. For example, the data sent from the LTE protocol processing unit 1002, the data will be firstly processed in the IP bearer processing module 1004-3 in the interface unit, and the IP bearer processing module 1004-3 performs packet processing on the data, and adds data. The source IP address and the destination IP address of the packet, and then the data packet is encapsulated into the link layer frame; after the frame is completed, the data of the frame is sent to the TDM interface processing module 1004-4, and the TDM interface processing module 1004-4 These data frames are sent to the corresponding TDM time slot for transmission. The processing of the uplink data sent by the remaining protocol processing units is the same as that, and will not be described again.

For the downlink data: the TDM interface processing module 1004-4 identifies the transmission bearer of the received downlink data according to the slot number (the downlink data sent by different upper nodes uses different time slots, and their slot numbers are different), and then Send to the corresponding bearer processing module for processing. For example, if the downlink data is an IP data packet sent to the LTE protocol processing module, the TDM interface processing module 1004-4 distinguishes the IP data packet transmitted on the time slot according to the time slot number, and sends the information flow on the time slot. In the IP bearer processing module 1004-3, the link layer of the IP bearer processing module 1004-3 completes the reorganization of the link layer, recovers the IP data packet, and then the destination IP address or source IP in the IP data packet. The address is determined to require the packet to be sent to the LTE protocol processing unit.

When the data of the transport layer is transmitted between the protocol processing unit and the interface unit in the multimode base station, the structure of the multimode base station shown in FIG. 10B can be evolved into the multimode base station shown in FIG. 10C, the main difference being shown in FIG. 10C. The function of the bearer processing module is completed by the protocol processing unit in the multi-mode base station, and the rest of the processing is the same as that of FIG. 10B, and details are not described herein again.

A variation of the multimode base station shown in FIG. 10B and FIG. 10C is that the TDM interface unit is independently set up with a plurality of protocol processing units, that is, the TDM interface unit exists as a separate device, and multiple protocol processing units in the multimode base station The interaction between the data is performed through the communication interface, and the processing of the data is the same as the multi-mode base station shown in FIG. 10B and FIG. 10C.

In order to provide different transmission bearers on the same transmission line, in the multimode base station 100 and the superior section Different protocol stacks are provided on the interfaces at both ends of point 102. In this embodiment, the protocol conversion is provided by setting an interface conversion device in front of the upper node. The interface conversion device cooperates with the interface unit in the multimode base station, and first separates the transmission bearer according to the configuration of the time slot, and then for each The transmission lifetime L forwards the corresponding data to the corresponding superior node, so that the upper node can match the protocol to parse the uplink data. The interface conversion apparatus can adopt the structure shown in FIG. 8, and the processing of the protocol is the same as the foregoing.

For a time slot providing an IP transmission bearer, a data link layer protocol is provided between the interface unit and the upper node to provide segmentation and reassembly of the frame data to carry IP layer data; the link layer protocol may be The PPP protocol or the HDLC protocol can also be other data link layer protocols. The protocol stack is shown in FIG.

If multiple protocol processing units use the IP transmission bearer in the multimode base station, the source IP address or the destination IP address can be used to distinguish these protocol processing units. The distinguishing method is the same as the foregoing method of using IP bearers. Let me repeat.

When the TDM time slot is used to carry the ATM, the processing function of the ATM protocol stack is provided between the interface unit and the upper node, and the protocol stack of the time slot providing the ATM link is as shown in FIG.

When PCM voice information is transmitted using TDM time slots, these time slots are directly connected to the switching network board.

FIG. 13 shows an example of a network system for transmitting data between a multimode base station and a higher-level node using a TDM transmission network in this embodiment. The TDM is used as the unified physical layer bearer between the multi-mode base station 130 and the independent interface switching device 132. The interface conversion device 132 and the upper-level node 133 are between the PCM bearers, and the interface between the interface switching device 132 and the upper node 134 is an ATM. The transmission bearer, the interface conversion device 132 and the upper node 135 are IP transmission bearers. The function of the interface conversion device 132 includes: identifying the corresponding data stream type according to the configuration, and sending various data streams to the corresponding protocol stack for processing; for the IP data stream, implementing the link layer on the interface conversion device Protocol function, recovering IP packets through the link layer protocol; for IP packets, according to their purpose The end IP address sends the data packet to the corresponding superior node; for the ATM data stream, it will be forwarded directly to the corresponding node; for the PCM data stream, the time slot is switched to the corresponding node.

The association relationship established between the interface conversion device 132 and the multimode base station 130 includes: configuring the same data to specify time slot resources for PCM transmission, ATM transmission, and IP transmission, respectively; for IP transmission, in the multimode base station 130 and A data link layer is established between the interface switching devices 132 to carry the IP layer protocol.

The network architecture of the independent interface conversion device can not only provide the ATM transmission bearer, but also does not need to make any changes to the peer node.

Obviously, the interface conversion device 132 of Fig. 13 can be disposed in one of the upper nodes. For example, the interface conversion device 132 is disposed in the upper node 133, and the upper node 134, 135 is connected to the upper node 133. Even the interface conversion device 132 and the upper nodes, 133, 134, 135 can be disposed within the same physical entity.

FIG. 14 shows an example of a network structure in which a multimode base station and its upper node use microwave as a TDM transmission bearer to transmit data in this embodiment. Since it is difficult to lay ground circuits such as optical fibers or E1 lines in many cases, it is necessary to use microwaves as relay transmissions in some application scenarios. When using microwave as the relay transmission, E1 can be used for short-distance transmission from the multi-mode base station to the microwave transceiver station, and between the microwave transceiver station and the interface conversion device, and microwave transmission is used between the ^: wave transceiver stations. . If the middle section of the microwave transmission is opened, it is substantially the same as that shown in Fig. 13 only from the transmitting and receiving ends of the multimode base station and the interface switching device.

The TDM transmission network is used as a unified access bearer between the multi-mode base station and its upper-level nodes, which can reuse existing transmission resources and provide a good synchronization function by using the TDM system. In addition, support for multiple bearer modes can be provided, even without any changes to the node 4 (such as when using a separate interface conversion device).

Fig. 15A shows an example of a network system for transmitting data between the multimode base station and its upper node in the ATM transmission network in this embodiment. Between the multimode base station 150 and the independent interface switching device 152 Connected through the optical network 151, the ATM is used as a unified physical layer bearer; the interface switching device 152 performs protocol conversion between different transport bearers. Between the interface switching device 152 and the upper node 153 is a PCM bearer voice, the interface switching device 152 and the upper node 154 are ATM transport bearers, and the interface switching device 152 and the upper node 155 are IP transport bearers.

Fig. 15B shows a structure of the multimode base station 150 in this embodiment, which includes a GSM protocol processing unit 1500, a UMTS protocol processing unit 1501, an LTE protocol processing unit 1502, a WiMAX protocol processing unit 1503, and an ATM interface unit 1504. Of course, other multi-mode base stations 150 may also include other possible protocol processing units. The functions of the respective protocol processing units are the same as those of the protocol processing unit in the aforementioned multimode base station.

The user processing data on the bearer layer is transmitted between the protocol processing module and the ATM interface unit 1504 in the multi-module base station 150. The interface unit 1504 includes a PCM bearer processing module 1504-1, an ATM bearer processing module 1504-2, and an IP bearer processing. Module 1504-3 and ATM interface processing module 1504-4. The PCM bearer processing module 1504-1 is configured to process the PCM bearer on the ATM; the ATM bearer processing module 1504-2 directly forwards the data to the ATM interface processing module 1504-4; and the IP bearer processing module 1504-3 is configured to process IP bearer on the ATM; The ATM interface processing module 1504-4 is configured to send data to and receive data from the bearer network.

For the uplink data: processed by the protocol processing unit and then transmitted to the ATM interface unit, the bearer processing module processes the received data according to the transmission bearer mode, and then transmits the data to the ATM interface processing module, and the ATM interface processing module adds each data frame header. The VPI/VCI value is sent and sent out. Different virtual connections are allocated to data of different protocol processing units, and the virtual connection is composed of a virtual path VP and a virtual channel VC. On a transmission link, the virtual connection is uniquely identified by the values of the VPI and VCI. For example, after the data transmitted by the LTE protocol processing unit 1502 reaches the IP bearer processing module 1504-3 in the interface unit 1540, the IP bearer processing module 1504-3 performs packet processing on the data, and adds the source IP address and the destination IP address of the data packet. Then, the data packet is encapsulated into a link layer frame; after the frame is completed, the data of the frame is sent to the ATM interface processing module 1504-4, and the ATM interface processing module 1504-4 allocates the corresponding virtual link for the data, and sends the data frame header to the bearer network after adding the VPI/VCI value.

For the downlink data: the ATM interface processing module 1504-4 identifies the transmission bearer mode of the data according to the value of the VPI/VCI of the data frame header, that is, identifies which one of the IP, ATM, and PCM transmission bearers; and then, the ATM The interface processing module 1504-4 sends the data to the corresponding bearer processing module for processing, and then transfers the processing to the corresponding protocol processing unit. For example, if the downlink data is an IP data packet sent to the processing unit of the LTE protocol, the ATM interface processing module 1504-4 distinguishes the IP data packet transmitted on the link according to the value of the VPI/VCI, and then on the link. The data packet is sent to the IP bearer processing module 1504-3. The link layer in the IP bearer processing module 1504-3 completes the reorganization of the link layer, recovers the IP data packet, and then according to the destination IP address or source IP of the IP data packet. The address is determined to be sent to the LTE protocol processing unit 1502.

The structure of the multimode base station shown in FIG. 15B can be evolved into the multimode base station shown in FIG. 15C. In the multimode base station shown in FIG. 15C, the transport layer can be transmitted between the protocol processing unit and the interface unit in the multimode base station. Data, can also transfer user data above the transport layer. If the data of the transport layer is transmitted, the main difference is that the function of the bearer processing module is completed by the protocol processing unit in the multimode base station shown in Fig. 15C, and the rest of the processing is the same as that of Fig. 10B. If the user data above the transport layer is transmitted, the received data is adapted by the ATM interface unit to the ATM transport bearer, and the received ATM data is adapted to the user data on the transport layer and then transmitted to the corresponding Protocol processing unit.

A variation of the multimode base station shown in FIG. 15B and FIG. 15C is that the ATM interface unit is independently set up with a plurality of protocol processing units, that is, the ATM interface unit exists as an independent device, and multiple protocol processing units in the multimode base station The interaction between the data is performed through the communication interface, and the processing of the data is the same as the multi-mode base station shown in FIG. 10B and FIG. 10C.

In order to provide different transmission bearers on the same transmission line, different protocol stacks are provided on the interfaces at both ends of the multimode base station and the upper node. In the network system shown in FIG. 15A, protocol conversion, interface conversion means 152 and multimode base station are provided by setting interface conversion means 152 in front of the upper node. In the ATM interface unit, the transmission bearer mode is first separated according to the configuration of the VPI/VCI, and then the corresponding data is forwarded to the corresponding upper node for each transport bearer, so that the upper node can match the protocol to parse the uplink data.

In the GSM system, the base station BTS and the base station controller BSC are connected through the Abis interface, and the BSC and the MSC are connected through the A interface, and the voice data and signaling on the Abis interface and the A interface are transmitted through the PCM, therefore, In this embodiment, the transport layer protocol in GSM can be adapted to the ATM layer through the AAL2 adaptation layer protocol, as shown in FIG. AAL2 is an ATM adaptation layer protocol. The function of data adaptation is completed. The high-level data structure is represented as an ATM cell, and corresponding operation and management functions are provided. AAL2 is designed for variable bit data transmission and is mainly used to transmit voice services.

In the WCDMA system, the implementation of the current transport layer protocol stack framework includes two schemes: an ATM-based transmission technology and an IP-based transmission technology. To provide an IP transmission bearer, a data link is provided between the interface unit and the superior node. A layer protocol, which provides segmentation and reassembly of frame data to carry IP layer data, as shown in FIG. For the ATM-based transport protocol stack, it can be applied to the unified ATM as a transport bearer without any modification. For the IP-based transport protocol stack, IP Over ATM technology can be used for protocol stack migration, and the ATM adaptation layer is coordinated.

The main function of SAR is to split and assemble cells. CS provides a unified interface for high-level applications. The protocol stack is shown in Figure 18.

For the LTE system, the user traffic and signaling data on the Sl and X2 interfaces are all packet data packets based on IP technology. Therefore, IP technology is used as the network layer technology at the network layer, so reference can be made to the implementation method in WCDMA. IP data is adapted to the ATM transport bearer by IP Over ATM technology. The transport protocol stack is shown in Figure 18.

For the WiMAX system, the user traffic and signaling data on the interface in the WiMAX system are all packet data packets of the IP technology, so IP technology is used as the network at the network layer. Layer technology, so the IP over ATM technology can be used to adapt the IP data to the ATM transport bearer by referring to the implementation method in WCDMA. The transport protocol stack can be seen in FIG. 18.

For CDMA2000 systems, it is divided into two categories, circuit domain and packet domain, according to the type of service. For the interface reference point of the circuit domain, in order to ensure real-time and reliable transmission of service and signaling information, the physical layer technology adopts traditional circuit transmission technology, such as: T1/E1, DS0 link, or higher rate T3, OC3 Etc., the data transmission layer uses the nickname signaling system or ATM technology. For each interface reference point in the packet domain, the user service data is packet data packets based on IP technology, so the interfaces in the packet domain use IP technology as the network layer technology.

Therefore, for circuit-type services using ATM technology, the transport protocol stack can be directly carried on ATM technology without modification, such as A3 and A7 interfaces; for packet domain interfaces using IP technology, such as A8, A9, A10, All, etc., IP over ATM technology can be used to adapt IP data to the ATM transport bearer. The transport protocol stack can refer to FIG. 18.

For the data transmission layer, the circuit domain interface of the No. 7 signaling system is adopted, and the following signaling protocol stack can be used:

For the A1 interface (the signaling interface between the BS and the MSC), the corresponding protocol stack is converted into an A1 interface protocol stack based on ATM transmission. When ATM is used to carry A1 interface signaling, the processing function of the ATM protocol stack is provided between the interface unit and the upper node, and the protocol stack is as shown in FIG.

For the A2 interface (the voice service interface between the BS and the MSC), the protocol stack is converted to an A2 interface protocol stack based on ATM transmission. When ATM is used to carry PCM voice information, the processing function of the ATM protocol stack is provided between the interface unit and the upper node. The main functions of the ATM layer are general flow control, cell multiplexing and switching, and generation of cell headers. extract. The ATM Adaptation Layer (AAL) is further divided into a Disassembly Sublayer (SAR) and a Convergence Sublayer (CS). The main function of SAR is to split and assemble cells. CS provides a unified interface for high-level applications. The protocol stack is shown in Figure 20.

Similarly, the transport layer for the A5 interface (the interface of the circuit type data service between the BS and the MSC) can use a transport protocol stack structure similar to the A2 interface. N2008/000134 Obviously, for the interface conversion device 152 of Fig. 15A, it can be placed in one of the upper nodes. For example, the interface conversion means 152 is disposed in the upper node 153, and the upper nodes 154, 155 are connected to the upper node 153. Even, the interface conversion device 152 and the upper nodes, 153, 154, 155 can be disposed within the same physical entity. The implementation is the same as the foregoing, and will not be described again.

The ATM transmission network is used as a unified access bearer between the multi-mode base station and its upper-level nodes, which can reuse existing transmission resources and fully utilize ATM as a transmission bearer for broadband and quality of service guarantee.

Although the above describes the GSM access system, the UMTS access system, the WiMAX access system, and the LTE access system as an example, the present invention is not limited thereto, and is equally applicable to other emerging access systems, such as AIE. Similarly, the transport bearer is not limited to the TDM transport bearer, the ATM transport bearer, and the IP transport bearer, and is equally applicable to other emerging transport bearers, and the implementation manner is the same as the above.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Therefore, it is intended that the present invention cover the modifications and variations of the invention as claimed.

Claims

Rights request

A method for unified wireless access, comprising the steps of:

A multi-mode base station and other network nodes employ a transport to carry data based on the plurality of radio access systems.

2. The method according to claim 1, wherein the plurality of radio access systems comprise part or all of the GSM access system, the UMTS access system, the WiMAX access system, and the LTE access system. System.

The method according to claim 1, wherein before the data is sent to the one type of transport bearer network, the data to be sent is adapted to be suitable for the transport bearer according to the transport bearer supported by the transport bearer network. Data transmitted over the network.

The method according to claim 3, wherein, if the target node receiving the data is different from the transport bearer supported by the transport bearer network, the transport bearer supported by the target node is adapted from the transport bearer. The data received by the network is then transmitted to the target node; or, when the target node determines that the transport bearer supported by the transport bearer network is different, the data is adapted in the target node.

The method according to any one of claims 1 to 4, wherein the one type of transmission bearer is an IP transport bearer, a TDM transport bearer or an ATM transport bearer.

The method according to claim 5, wherein, when the one type of transmission bearer is an IP transmission bearer, an IP is allocated to the multimode base station, and the multimode base station determines a target IP of the received data according to the source of the data. address.

The method according to claim 5, wherein when the one type of transmission bearer is an IP transmission bearer, the multi-mode base station is allocated a plurality of IP addresses, wherein each IP address corresponds to one radio access system.

8. The method of claim 5, wherein the Ethernet and/or user data lines are The road network provides the IP transport bearer.

The method according to claim 5, wherein, when the one type of transmission bearer is a TDM bearer network, different time slot resources are allocated to transmit data based on different radio access systems, and the receiving is determined according to the slot number. The transport bearer used by the data.

10. The method according to claim 9, wherein the time slot resource is allocated by static configuration; or the time slot resource is allocated dynamically.

The method according to claim 5, wherein when the one type of transmission bearer is an ATM bearer network, different virtual connections are allocated to transmit data based on different radio access systems, and the identifier is identified according to the virtual link identifier. The transport bearer used by the received data.

12. A method for unified wireless access, comprising the steps of:

13. The method of claim 12, further comprising the steps of:

The network node processes downlink data based on different radio access systems according to the one type of transmission bearer, and sends the processed downlink data to the transmission network for transmission to the multimode base station.

The method according to claim 12, wherein the multiple radio access systems include some or all of the GSM access system, the UMTS access system, the WiMAX access system, and the LTE access system. System.

The method according to claim 12, wherein, if the target node receiving the data is different from the transport bearer supported by the transport bearer network, the transport bearer supported by the target node is adapted from the transport bearer The data received by the network is then transmitted to the target node; or, when the target node determines that the transport bearer supported by the transport bearer network is different, the data is adapted in the target node.

The method according to any one of claims 12 to 15, wherein the one type of transmission bearer is an IP transmission bearer, a TDM transmission bearer or an ATM transport bearer.

The method according to claim 16, wherein, when the one type of transmission bearer is an IP transmission bearer, an IP is allocated to the multimode base station, and the multimode base station determines a target IP of the received data according to the source of the data. address.

The method according to claim 16, wherein the one type of transmission bearer is an IP transmission bearer, and the multi-mode base station is allocated a plurality of IP addresses, wherein each IP address corresponds to a wireless access system.

19. The method of claim 16 wherein the IP transport bearer is provided over an Ethernet and/or user data line network.

The method according to claim 16, wherein, when the one of the transmission bearer networks is a TDM bearer network, different time slot resources are allocated to transmit data based on different radio access systems, and are identified according to the slot number. The received data is carried by the transport bearer.

21. The method according to claim 20, wherein the time slot resource is allocated by static configuration; or the time slot resource is allocated dynamically.

The method according to claim 16, wherein, when the one of the transmission bearer networks is an ATM bearer network, different virtual connections are allocated to transmit data based on different radio access systems, and the receiving and identifying are received according to the virtual link identifier. The transport bearer used by the data.

A method for processing data in a multimode base station, comprising the steps of: supporting a multimode base station supporting multiple radio access systems to process uplinks based on different radio access systems according to a protocol used by the radio access system Data, and get user data on the bearer layer;

The user data is separately processed according to the same transport bearer, and data that can be transmitted on the transport bearer network based on the same transport bearer is obtained.

24. The method of claim 23, further comprising the steps of:

Processing downlink data received from the transport bearer network according to the same transport bearer protocol, and obtaining user data on the bearer layer;

The user data is processed according to a protocol employed by the wireless access system.

The method according to claim 23, wherein the multiple radio access systems include a GSM access system, a UMTS access system, a W1MAX access system, and an LTE access system. Part or all access to the system.

The method according to claim 23, wherein the user data on the transport bearer layer is directly processed into data that can be transmitted on the transport bearer network according to the same transport bearer; or, according to the wireless connection The bearer protocol used by the ingress system processes the data to obtain data of the bearer layer, and then processes the data of the bearer layer into data that can be transmitted on the transport bearer network according to the same transport bearer.

The method according to any one of claims 23 to 26, wherein the transmission bearer network is an IP bearer network, a TDM bearer network or an ATM bearer network.

A method for processing data in a multimode base station, comprising the steps of: a multimode base station supporting multiple radio access systems processing uplinks based on different radio access systems according to a protocol adopted by the radio access system Data, and get the data of the bearer layer;

The data of the bearer layer is separately processed according to the same transport bearer, and data that can be transmitted on the transport network based on the same transport bearer is obtained.

29. The method of claim 28, further comprising the steps of:

Processing downlink data received from the transport bearer network according to the same transport bearer protocol, and obtaining data of the bearer layer;

The data of the bearer layer is processed according to a protocol adopted by the wireless access system.

The method according to claim 29, wherein the multiple radio access systems include some or all of the GSM access system, the UMTS access system, the WiMAX access system, and the LTE access system. System.

The method according to any one of claims 28 to 30, wherein the transmission bearer network is an IP bearer network, a TDM bearer network or an ATM bearer network.

32. A multi-mode base station, comprising:

a plurality of protocol processing units, respectively configured to process data based on different wireless access technologies; and an interface unit, connected to the plurality of protocol processing units, configured to process the plurality of transmission bearer protocols supported by the transport network The data output by the protocol processing unit is sent to the transmission network, and the data received from the transmission network is received and processed, and transmitted to the corresponding protocol processing list. Yuan.

The multimode base station according to claim 32, wherein the plurality of protocol units comprise a GSM protocol processing unit, a UMTS protocol processing unit, a WiMAX protocol processing unit, an LTE protocol processing unit, and an AIE protocol processing unit. Some or all of the units.

The multi-mode base station according to claim 33, wherein the interface unit comprises: a plurality of bearer processing modules, each bearer processing module being respectively connected to a protocol processing unit for processing according to different transport bearer protocols Data received from a corresponding protocol processing unit, and processing data sent to a corresponding protocol processing unit;

An interface processing module, configured to process data output by the multiple bearer processing modules according to the one type of transport bearer protocol, and receive data from the transport bearer network, process the data according to the one type of transport bearer protocol, and then transmit the data to the corresponding bearer. Processing module.

35. The multimode base station according to claim 34, wherein the plurality of bearer processing modules comprise: a PCM processing module that processes data according to a PCM bearer protocol, an ATM module that processes data according to an ATM bearer protocol, and An IP bearer processing module that carries protocol processing data.

The multimode base station according to any one of claims 32 to 35, wherein the interface unit is an IP interface unit that transmits and receives data based on an IP transmission bearer, and the ATM transmits and receives data based on the ATM transmission bearer. An interface unit, or a TDM interface unit that transmits and receives data based on a TDM transmission bearer.

37. An interface conversion device, comprising:

a receiving module, configured to receive data;

a processing module, configured to adapt the received data to a transport bearer supported by the transport network or the target node when determining that the transport bearer is different;

The interface conversion device according to claim 37, wherein the transport bearer comprises a TDM transport bearer, an ATM transport bearer, and an IP transport bearer.

The interface conversion device according to claim 38, wherein, when the transport bearer supported by the transport network or the target node is an IP transport bearer, the processing module sends the transport bearer to the transport bearer network through TDM over IP or The data of the target node and based on the TDM transport bearer is adapted to the IP transport bearer.

The interface conversion device according to claim 38, wherein when the transmission bearer supported by the transmission network or the target node is an asynchronous transmission mode ATM transmission, the conversion module transmits by using an IP over ATM method. Adapting data to the transport bearer network or the target node and based on the IP transport bearer to the ATM transport bearer, and adapting the data to the transport bearer network or the target node and based on the TDM transport bearer through the AAL2 adaptation layer protocol Go to the ATM transport bearer.

41. A base station controller, comprising:

a receiving module, configured to receive data based on a GSM system;

a processing module, configured to: when the transmission bearer is different from the transmission bearer of the local device, adapt the received data to a transport bearer supported by the device, and when it is determined that the transport bearer is different from the transport bearer network, The transmitted data is adapted to the transport bearer supported by the transport network;

Send module, used to send data.

42. A communication device, comprising:

a receiving module, configured to receive data based on a UMTS system;

Send module, used to send data.

43. The communication device of claim 42, wherein the communication device is a wireless network controller in a UMTS system, an access gateway in an LTE system, or a gateway in a WiMAX system.

44. A wireless network system, comprising: WO 2008/089660 _ ^ , , _ , _L , x ^ - , , PCT/CN2008/000134 transmission network for transmitting data through the same transmission bearer;

a first network node, connected to the transport network, is configured to access user equipments of different radio access technologies to the network, where the user equipments based on different radio access technologies are processed according to the transport bearer manner supported by the transport network Transmitting data and transmitting to the transmission bearer network, and receiving data from the transmission bearer network and transmitting the data to the user equipment;

The wireless network system according to claim 44, further comprising: a third network node, connected to the transmission network, configured to transmit uplink data transmitted by the transmission network to the second network node, And transmitting the downlink data sent by the second network node to the transport network, where the data is suitable when the transport bearer used for determining the data to be transmitted is different from the transport bearer supported by the second network node or the transport network It is allocated to the transmission bearer supported by the second network node or the transmission network.

The wireless network system according to claim 45, wherein the third network node is an independent physical entity; or, one of the third network node and the second network node is set to One.

The wireless network system according to any one of claims 44 to 46, wherein the wireless access system supported by the first network node comprises a GSM access system, a UMTS access system, a WiMAX access system, and Correspondingly, the second network node includes a base station controller BSC in the GSM system, a radio network controller RNC in the UMTS system, a connection service network CSN and an LTE system in the WiMAX system. Multiple of the access gateways aGW.

48. The wireless network system according to claim 47, wherein the transmission network is based on a TDM transmission bearer, an ATM transmission bearer, or an IP transmission bearer.