CN100484334C - Radio honeycomb base station device with VDSL interface - Google Patents

Abstract

The invention discloses a base station device with a VDSL transmission interface, which includes a radio frequency unit 201, a base station control unit 215, a baseband processing unit 207 and a VDSL transmission interface unit 200. The invention also discloses a method for the base station equipment to send data to the base station controller through the VDSL transmission interface, and a method for the base station equipment to receive data from the base station controller through the VDSL transmission interface. The base station equipment and the method for sending data and receiving data described in the present invention can make full use of existing transmission resources, save investment in the construction of the third-generation mobile communication network, reduce the difficulty for operators to find base station sites, and make operators Providers can quickly and efficiently build third-generation mobile communication networks.

Description

A kind of wireless cellular base station equipment with VDSL interface

technical field

The invention relates to a wireless cellular communication base station equipment, in particular to a base station equipment in the field of mobile communication, which has a VDSL interface and communicates with a base station controller through the interface.

Background technique

The future world will be an information society dominated by mobile communications. In the future information society, various wireless personal communications will become more and more common. At the same time, mobility will be extended to the Internet and organically combined with the Internet to form a new high-speed wireless multimedia communication platform. The third-generation mobile communication technology (3G) is the inevitable product of this development trend. Through high-speed wireless access and efficient core switching, it provides a fast information channel for future mobile multimedia terminals. 3G is a system that can provide various types and qualities of multimedia services, has global roaming capabilities, is compatible with fixed networks, and can perform any kind of communication at any time and any place with a small portable terminal. Due to its many advantages, it has deeply attracted the attention of operators, equipment suppliers and users all over the world since its birth. Compared with the second generation mobile communication technology (2G), the advantages of 3G can be summarized as follows:

(1) Global roaming can be realized: users can roam in the whole system or even in the whole world, and can obtain quality-guaranteed services at different speeds and different motion states;

(2) Can provide multiple services: provide voice, variable rate data, dynamic video services, especially multimedia services;

(3) It can adapt to various environments: it can provide seamless coverage in combination with the existing public telephone network (PSTN), integrated service digital network, cordless system, ground mobile communication system, and satellite communication system;

(4) Sufficient system quality: powerful multi-user management capabilities, high confidentiality and high service quality.

A base station device is a logical node responsible for transmitting (receiving) wireless signals to (from) a UE in one or more cells in a wireless subnet in a 3G cellular communication system. This logical node terminates at an interface to a base station controller.

The main function of the base station equipment is to complete the processing of the air wireless interface physical layer protocol. Its main functions include spread spectrum, modulation, channel coding and despreading, demodulation and channel decoding, in addition to the conversion between baseband signals and radio frequency signals.

The architecture of general base station equipment consists of four modules. They are radio frequency module, baseband processing module, base station control module and interface module respectively. The main function of the radio frequency module is to complete the interface with the antenna, modulate the downlink signal, up-convert the frequency, amplify the downlink signal, amplify the uplink signal, down-convert the frequency, and demodulate the uplink received signal. filtering and duplexing capabilities. The main functions of the baseband processing module are to process the baseband signals of the uplink and downlink public and dedicated channels, terminate the frame protocol at the interface between the base station and the base station controller, and schedule resources in the baseband processing module. The function of the base station control module is to control and coordinate the normal operation of the base station equipment, and complete the allocation of resources according to the instructions of the base station controller. The main function of the interface module is to complete the interface between the base station and the base station controller and other external interface functions of the system, control the signaling processing and operation and maintenance of the base station, and perform system clock generation, synchronization and transmission of user plane data in the baseband module. Inside the existing base station system, the physical transmission of the interface module only supports E1, STM-1 and microwave transmission.

Since the existing 3G base station equipment uses STM-1, E1/T1, J1 and other physical transmission bearers for data transmission between the base station and the base station controller, not all buildings suitable for site sites have E1/T1 , J1 or STM-1 and other physical transmission lines, which have caused great difficulties for operators to find suitable base station equipment rooms. The construction of the transmission network can be improved by laying optical fiber or coaxial cables in buildings suitable for station construction, but since the laying of optical cables or cables requires digging cable trenches and even crossing roads, the construction of the third-generation mobile communication transmission network requires a lot of investment and time.

Therefore, how to quickly and efficiently solve the transmission problems of many base stations and save a lot of investment in 3G construction has become an important issue for operators and equipment manufacturers to consider. For existing fixed telephone operators, due to their years of operation, a large number of twisted pair transmission media have been laid. If the twisted pair transmission medium can be used for data transmission between the base station and the base station controller, it can save a lot of investment for the operator to build a 3G network.

Contents of the invention

An object of the present invention is to overcome the deficiency that existing base stations cannot communicate with base station controllers using widely distributed twisted pair resources, and to invent a new type of base station equipment capable of communicating with base station controllers through twisted pair physical media.

Another object of the invention is to propose a method involving sending data in base station equipment to a base station controller via VDSL transmission. The method utilizes the VDSL interface unit to carry the wireless network protocol data unit and the control signaling to the VDSL physical signal and send it to the base station controller through the twisted pair transmission medium.

A third object of the present invention is to invent a method involving the reception of data from a base station controller via VDSL transmission in a base station device. The method uses the VDSL interface unit to carry the wireless network protocol data unit and control signaling with the VDSL physical signal transmitted from the base station controller through the twisted pair.

For reaching the purpose of the invention, a kind of novel base station equipment with VDSL transmission interface of the present invention comprises radio frequency unit, base station control unit, baseband processing unit, it is characterized in that: also comprise VDSL transmission interface unit; Described VDSL transmission interface unit and baseband The processing unit, the base station control unit, and the external twisted pair physical transmission medium are connected; the radio frequency unit is connected with the antenna, the base station control unit, and the baseband processing unit; the baseband processing unit is connected with the radio frequency unit, the base station control unit, and the VDSL transmission interface The unit is connected; the VDSL transmission interface unit is connected with the base station control unit, the baseband processing unit and the twisted-pair physical transmission medium; the "connection" mentioned above and below has the following different meanings due to different specific use occasions: 1. Physical connection, that is, tangible connections such as circuits and magnetic circuits between entities; 2. Logical connection, referring to intangible communications or connections such as signals, information, and control signaling interactions between logical entities.

In the base station equipment of the present invention as described above, the VDSL transmission interface unit includes: a wireless network protocol processor, a VDSL transmission protocol adapter, and a VDSL transceiver; the wireless network protocol processor communicates with the baseband processing unit and the VDSL transmission protocol adapter Connect; the VDSL transmission protocol adapter is connected with the wireless network protocol processor and the VDSL transceiver; the VDSL transceiver is connected with the VDSL transmission protocol adapter and the twisted pair physical transmission medium;

In the base station equipment of the present invention as described above, the VDSL transmission protocol adapter includes: an ATM protocol adapter; the ATM protocol adapter is connected with the wireless network protocol processor and the ATM-TC of the VDSL transceiver;

In the base station equipment of the present invention as described above, the VDSL transmission protocol adapter includes: an IPOA protocol adapter; the IPOA protocol adapter is connected with the wireless network protocol processor and the ATM-TC of the VDSL transceiver;

In the base station equipment of the present invention as described above, the VDSL transmission protocol adapter includes: an IPOP protocol adapter; the IPOP protocol adapter is connected with the wireless network protocol processor and the PTM-TC of the VDSL transceiver;

In order to achieve the second purpose of the present invention, the base station equipment of the present invention transmits the method for sending data to the base station controller by VDSL transmission, comprises the following steps:

(1), the wireless network protocol processor of the base station equipment multiplexes the control information to be sent to the base station controller, user data and operation and maintenance information of the base station into a wireless network transmission service data unit (SDU) and hands it to the VDSL transmission protocol adapter;

(2) The VDSL transmission protocol adapter of the base station equipment encapsulates the wireless network protocol data unit into ATM cells or (and) PTM data packets respectively according to the prior agreement with the central office VDSL equipment (VTU-O) and the base station controller Send to the VDSL transceiver;

(3), the VDSL transceiver of the base station equipment processes the ATM cell or (and) PTM data packet of the VDSL transmission protocol adapter into a VDSL physical signal and sends it to the central office VDSL equipment (VTU-O) through the twisted pair physical medium, VDSL The central office equipment then transmits to the base station controller;

A method for base station equipment of the present invention to receive data from a base station controller through VDSL transmission, comprising the following steps:

(1), the VDSL transceiver of the base station equipment demodulates and decodes the received physical signal sent by the VDSL equipment (VTU-O) at the central office, and decodes it into a VDSL transmission frame, and then according to the VDSL equipment (VTU-O) and The base station controller pre-agrees to process the VDSL transmission frame into ATM cells or (and) PTM data packets and send them to the VDSL transmission protocol adapter;

(2) The VDSL transmission protocol adapter of the base station equipment processes the received ATM cell or (and) PTM data packet sent by the VDSL transceiver into The wireless network transmission protocol data unit is sent to the wireless network protocol processor;

(3) The wireless network protocol processor of the base station equipment demultiplexes the received wireless transmission service data unit into control information, user data and operation maintenance information and sends them to the base station control unit and the baseband processing unit.

Compared with the existing base station equipment, using the invented base station equipment and the invented receiving and sending method can make full use of existing transmission resources, save the construction investment of the third generation mobile communication network, and reduce the difficulty for operators to find the base station site. It enables operators to quickly and efficiently build third-generation mobile communication networks.

Description of drawings

Figure 1 illustrates the architecture of the third generation mobile communication network;

Figure 2 illustrates a possible block diagram of a device according to the invention;

Figure 3 illustrates a block diagram of an example of a VDSL transport interface unit;

Figure 4 illustrates a block diagram of an example of a VDSL transport protocol adapter;

Figure 5 illustrates a block diagram of an example of a VDSL transceiver.

Detailed ways

The preferred embodiment is described in more detail below in conjunction with the examples of the accompanying drawings,

The method and equipment of the present invention will be described in detail below by taking UMTS, one of the 3G standards, as an example. However, the present invention can also be used in other wireless access technologies. It is obvious to those skilled in the art based on the following description, so the description of the present invention does not Not limited to UMTS radio access technology.

The architecture of the UMTS network will be described in detail below with reference to FIG. 1 . As shown in FIG. 1 , the UMTS system is composed of core network 100 , radio access network 101 and user equipment (UE) and other network elements. The core network 100 adds the core network function of the packet domain on the basis of retaining the circuit domain service characteristics of the second generation communication network, so as to provide users with high-speed data service services. The access network 101 implements access service management of user services, such as completing user service switching, radio resource management, and so on.

The wireless access network 101 is composed of several wireless network subsystems 104, 105, and each wireless network subsystem is composed of a base station controller 106 and several base stations 110, 111. The base station controller 106 controls the base stations 110 and 111 to realize three major functions: first, it is responsible for managing the establishment, allocation, deletion and measurement of public wireless resources; second, it controls the base stations 110 and 111 to complete the establishment and deletion of user services; third, it controls the base station 110 , 111 to complete the switching of services; Fourth, control the base stations 110, 111 to complete the establishment of service data, synchronization and transmission, and so on. The UMTS system architecture includes network elements such as the core network, base station controller, and base station, as well as interfaces between network elements. The interface between the core network and the base station controller is called the Iu interface, and the interface between the base station controller and the base station The interface between the base station controller and the base station controller is called the Iur interface, and the air interface between the radio access network and the user equipment (UE) is called the Uu interface.

As shown in Figure 1 of the specification, the base station equipment and access method of the present invention realize the functions of the base stations 110, 111, 114, 115 shown in the mobile network wireless access network systems 104, 105 in Figure 1 . The access device of the present invention may be one or more of the base station devices 110 , 111 , 114 , and 115 . The following uses the base station equipment 110 as an example to illustrate the system structure and technical solution of the base station device of the present invention.

As shown in accompanying drawing 2, base station equipment 110 according to the present invention comprises radio frequency unit 201, base station control unit 215, baseband processing unit 207, one or more VDSL transmission interface units 200, its function is to complete base station 110 and base station controller 106 , transmission of control signaling, user data and operation and maintenance information between 107; said VDSL transmission interface unit 200 is connected with baseband processing unit 207, base station control unit 215, external twisted pair physical transmission medium 213,214; said The radio frequency unit 201 is connected to the antenna 202, the base station control unit 215, and the baseband processing unit 207; the baseband processing unit 207 is connected to the radio frequency unit 207, the base station control unit 215, and the VDSL transmission interface unit 200;

As shown in FIG. 2 , the base station control unit 215 is the control center of the base station 110 and realizes the control of modules such as the radio frequency unit 201 , the baseband processing unit 207 , and the VDSL transmission interface unit 200 . The base station control unit 215 implements functions such as frequency and power setting of the radio frequency unit 201 through the control interface 206 , and implements control response check, air radio wave intensity monitoring and status management of the radio frequency unit 201 through the control interface 205 . Implementations of the control interfaces 205, 206 include but are not limited to control and data buses, interrupt messages and other forms.

As shown in FIG. 2, the base station control unit 215 implements the initialization, establishment, deletion and modification of the wireless link in the baseband processing unit 207 through the control interface 216, and realizes functions such as measurement control of the wireless link. The measurement report of the wireless link in the baseband processing unit 207 or the response message of the monitoring control interface 216 is received through the control interface 210 . Implementations of the control interfaces 210 and 216 include, but are not limited to, message queues, interface function calls, and the like.

As shown in accompanying drawing 2, base station control unit 215 realizes the control to VDSL transmission interface unit 200 through control interface 211, and its function includes: 1, realize the initialization of VDSL transmission interface unit 200; 2, realize the user service transmission network link Configure, establish and delete functions; 3. Realize the establishment and transmission of the wireless network public signaling link with the base station controllers 106 and 107. The base station control unit 215 realizes the following three types of functions through the control interface 212: one, the base station 110 receives the wireless network dedicated signaling message of the base station controller 106,107 from the input interface 214 and sends the wireless network to the base station controller 106,107 through the output interface 213. Network-specific signaling message; two, the base station 110 receives the wireless network public signaling message of the base station controller 106,107 from the input interface 214 and sends the wireless network public signaling message to the base station controller 106,107 through the output interface 213; three, When the network needs to manage the base station 110, receive a network status management command from the input interface 214, report the status of the base station from the output interface 213, etc.;

As shown in Figure 2, under the control of the base station control unit 215, the VDSL transmission interface unit 200 adapts the downlink user service data in the input interface 214 and sends it to the input interface 209 of the baseband processing unit 207; The user uplink service data in the uplink output interface 208 of the unit 207 is adapted and sent to the output interface 213 of the VDSL transmission interface unit 200 .

As shown in Figure 2, the baseband processing unit 207, under the control of the base station control unit 215, performs the following operations on the downlink user service data in the downlink input interface 209: downlink transmission channel multiplexing, coding, interleaving, rate matching, spreading with scrambling. After the above operations, the downlink user service data becomes a baseband signal. Then, the baseband processing unit 207 superimposes the baseband signals of different users, and superimposes the baseband signals of the downlink common channel. The baseband processing unit 207 sends the combined baseband signal to the input interface 204 of the radio frequency unit 201; the baseband processing unit 207, under the control of the base station control unit 215, performs the following operations on the uplink user baseband signal in the uplink input interface 203: despreading and descrambling, deinterleaving, decoding, demultiplexing, etc. The uplink user signal processed above is converted into uplink user data, and sent to the uplink output interface 208 of the baseband processing unit 207 .

As shown in FIG. 2 , the radio frequency unit 201 performs radio frequency modulation on the baseband signal in the downlink input interface 204 under the control of the base station control unit 215 , and outputs it to the air through the antenna port. Under the control of the base station control unit 215, the radio frequency unit 201 performs radio frequency low-noise amplification, automatic gain control, down-conversion demodulation, etc. on the uplink radio frequency signal to complete the conversion of the user uplink radio frequency signal into an uplink baseband signal.

Now consider the operation of the VDSL interface unit in detail in conjunction with accompanying drawing 3. As shown in FIG. 3 , the VDSL transmission interface unit 200 includes: a wireless network protocol processor 300 , a VDSL transmission protocol adapter 301 and a VDSL transceiver 302 .

Under the action of the base station control unit 215 through the control interfaces 211 and 212, the VDSL transmission interface unit 200 completes the initialization processing of functional modules such as the wireless network protocol processor 300, the VDSL transmission protocol adapter 301 and the VDSL transceiver 302.

After completing the initialization, the wireless network protocol processor 300 receives or sends the wireless network service data unit of the base station control unit 215 through the interfaces 211 and 212; receives or sends the Uu interface from the baseband processing unit 207 through the interfaces 208 and 209 to the baseband processing unit 207 Business and control data. The signal process and functions of the wireless network protocol processor 300 are: 1. Under the control of the base station control unit 215, the control signaling information is encoded into NBAP (Node B ApplicationPart) service data unit and then sent to the base station by the VDSL transmission protocol adapter for control device 106 or 107, or receive the NBAP protocol data unit sent by the base station controller from the VDSL transmission protocol adapter and decode it as control signaling and hand it over to the base station control unit; The Uu interface service and control data are encapsulated into different wireless data frames and then sent to the base station controller 106 or 107 by the VDSL protocol adapter, or the Uu interface service and control data sent by the VDSL transmission protocol adapter are adapted into Uu interface data Handed over to the baseband processing unit 207 for processing.

The VDSL transmission protocol adapter 301 is initialized under the control of the base station control unit. Then receive the NBAP protocol data unit (NBAP-PDU) and the Uu interface data frame that the wireless network protocol processor 300 submits to send through the interface 303,306,307, according to the agreement with the base station controller and the VDSL central office equipment (VTU-O) , and according to the 3GPP TS25.43x series protocol, respectively encapsulated into ATM cells or Ethernet frames, which are delivered to the VDSL transceiver 302 through the interface 304 or 305 and sent to the base station controller 106, 107; or receive the VDSL transceiver 302 through 304 or 305 The submitted ATM cells or Ethernet frames are adapted into NBAP protocol data units and wireless data frames, and then submitted to the wireless network protocol processor 300 through interfaces 303, 306, and 307.

The VDSL transmission protocol adapter 301 exchanges ATM cell data with the VDSL transceiver 302 through the interface 304 , and performs IP type data exchange with the VDSL transceiver 302 through the interface 305 .

The operation of the VDSL transmission protocol adapter 301 will be described in detail below with reference to FIG. 4 . As shown in FIG. 4 , the VDSL transmission protocol adapter 301 is composed of an ATM protocol adapter 401 , an IPOA protocol adapter 402 and an IPOP protocol adapter 403 . The ATM protocol adapter 401 is connected with the wireless network protocol processor 300 through the interface 307 , and connected with the VDSL transceiver 302 through the interfaces 407 and 304 . In general, if the base station controllers 106, 107 support the ATM interface and the VDSL central office equipment network side (VTU-O) supports the ATM interface, the base station system selects the ATM protocol adapter 401 for data transmission during initialization. The function of the ATM protocol adapter 401 is to realize the functions of the wireless network control plane protocol stack SAAL-NNI/ATM and the user plane protocol stack AAL2/ATM, and the transmission network control plane protocol stack ALCAP/Q.2150.2/SAAL-NNI/ATM. The IPOA protocol adapter 402 is connected with the wireless network protocol processor 300 through the interface 303 , and connected with the VDSL transceiver 302 through 408 and 304 . If the base station controllers 106, 107 only support IP mode and the VDSL central office equipment network side (VTU-O) only supports the ATM interface, the IPOA protocol adapter 402 is selected for data transmission when the base station system is initialized. The function of IPOA protocol adapter is to realize wireless network control plane protocol stack SCTP/IP/PPP/AAL5/ATM, SCTP/IP/PPP/AAL2/ATM, MPLS/ATM and wireless network user plane protocol stack UDP/IP/PPP/AAL5 /ATM, UDP/IP/PPP/AAL2/ATM, UDP/IP/MPLS/ATM and transport network control plane protocol stack functions and map ATM cells to ATM-TC. The IPOP protocol adapter 403 is connected with the wireless network protocol processor through the interface 306 and connected with the VDSL transceiver through the interface 305 . If the base station controllers 106, 107 support the IP mode, and the VDSL central office equipment side (VTU-O) supports the Ethernet interface, the IPOP protocol adapter 403 is selected for data transmission when the base station system is initialized. The function of the IPOP protocol adapter is to realize the wireless network control plane transmission protocol stack SCTP/IP/PPP/PPPOE/Ethernet function and the wireless network user plane protocol stack UDP/IP/PPP/PPPOE/Ethernet function and the transmission network control plane protocol stack IP- ALCAP/IP/PPP/PPPOE/Ethernet function and map Ethernet frame to PTM-TC.

As shown in Figure 5, the main function of the VDSL transceiver is to realize the function of VDSL user equipment (VTU-R).

The VDSL transceiver consists of modules such as ATM-TC, PTM-TC, fast channel multiplexer, slow channel multiplexer, PMS-TC and PMD. ATM-TC is connected with VDSL transmission protocol adapter through interface 304, and is connected with fast channel multiplexer and slow channel multiplexer through interfaces 506 and 507 respectively; PTM-TC is connected with VDSL transmission protocol adapter through interface 305, The fast channel multiplexer and the slow channel multiplexer are respectively connected through interfaces 508 and 509; the fast channel multiplexer is connected with the PMS-TC through the interface 510, and the slow channel multiplexer is connected with the PMS-TC through the interface 511 The PMS-TC is connected to the PMD module through the interface 512; the PMD is connected to the twisted pair physical medium through the interfaces 213 and 214.

ATM-TC receives or transmits ATM type data through interface 304 and VDSL transmission protocol adapter, and PTM-TC performs reception and transmission of IP type data through interface 305 and VDSL transmission protocol adapter; ATM-TC completes ATM cell rate decoupling , delimitation, HEC verification and generation, etc., and according to the different requirements of the bearer data (initialization settings), the interfaces 506 and 507 are respectively adapted to the fast channel multiplexer and the slow channel multiplexer. The PTM-TC transparently transmits IP data packets, and is respectively adapted to a fast channel multiplexer, a slow channel multiplexer, etc. through interfaces 508 and 509 according to different requirements of bearer data.

The fast channel multiplexer multiplexes the fast channel data into data that has nothing to do with the bearer application, and sends it to the PMS-TC through the interface 510, or demultiplexes the fast channel data at the interface 510 into data of different bearer applications, and sends it to the PMS-TC through the interface 510 506 or 508 is sent to ATM-TC or PTM-TC. The slow channel multiplexer multiplexes the data of the slow channel into data irrelevant to the bearer application, and sends it to the PMS-TC through the interface 511, or demultiplexes the slow channel data of the interface 511 into data of different bearer applications, And send to ATM-TC or PTM-TC through interface 507 or 509;

The PMS-TC module performs scrambling and descrambling, forward error correction coding and decoding, interleaving and deinterleaving processing on the two-way data of the slow channel, and performs scrambling and descrambling and forward error correction coding on the two-way data of the fast channel deal with decoding etc. The fast and slow channel data processed above are multiplexed and sent to the PMD module by the interface 512, or the data of the interface 512 is demultiplexed into coded and scrambled data of the fast and slow channels.

The PMD module is a unit that processes physical link signals in a VDSL transceiver. The PMD module performs constellation encoding, modulation, analog signal processing, etc. on the data of the interface 512, and transmits the data to the base station controller through the interfaces 213 and 214. After the PMD module filters, demodulates, constellation decodes, etc. the analog signals of the interfaces 213 and 214, the interface 512 sends them to the PMS-TC module.

The method for the base station device of the present invention to send data to the base station controller 106 through VDSL transmission will now be described in detail with reference to FIG. 6 . As shown in FIG. 6 of the description of the invention, the base station control unit 215 includes a system controller 600 , an operation maintenance and network manager 604 . The operation maintenance and network manager 604 is an optional module of the base station control unit 215 . The system controller 600 has interfaces 205, 206, 210, 216, 211, and 212 with the same functions as those in FIG. 206, 210, 216, 211, and 212 realize the control, status and measurement report, and control response message processing between the base station control unit 215 and the radio frequency unit 201, the baseband processing unit 207, and the VDSL transmission interface unit 200 in FIG. 2 . The operation maintenance and network management unit 604 has interfaces 211, 212, 601, 602, wherein the interfaces 211, 212 implement management communication with the network management center, and the interfaces 601, 602 implement the network management center to block local resources, suspend operations and local Resource status reporting and other functions.

Now in conjunction with accompanying drawing 7 describe in detail a kind of base station equipment of the present invention transmits the method steps to base station controller (106) by VDSL transmission:

The system controller 215 of the base station equipment sends the control, status and measurement reports, control response messages, etc. to be sent to the base station controller to the wireless network protocol processor 300 of the VDSL transmission interface unit 200 through the interface 211, and the wireless network protocol processor 300 Encapsulate these control information into NBAP (Node B Application Protocol) protocol data units (frames), and then deliver them to the VDSL transmission protocol adapter 301 for transmission; the baseband processing unit 207 sends the generated Uu interface data frames to the VDSL transmission interface unit through the interface 208 The wireless network protocol processor 300 of 200, the wireless network protocol processor 300 adapts these Uu interface data frames into transmission channel data frames, and then transfers them to the VDSL transmission protocol adapter 301 for transmission. The wireless network protocol processor 300 responds to the downlink node synchronization and transmission synchronization commands of the base station controller (106), generates uplink frame synchronization and uplink node synchronization control frames, etc., or according to the timing relationship of the downlink transmission channel frame of the base station controller (106) A transmission channel timing adjustment control frame is generated, and the node and transmission channel synchronization control frame is delivered to the VDSL transmission protocol adapter 301 for transmission.

As the method shown in accompanying drawing 7 of the description of the invention, the process of the signal flow step 702 transmitting NBAP control message is: the transmission protocol adapter 301 supports the NBAP protocol data unit according to the interface protocol of the base station controller end and the VDSL central office equipment (VTU-O) According to the protocol situation, the NBAP protocol data unit is mapped into ATM cell (ATM Cell) or Ethernet frame respectively; If the ATM interface is supported, the ATM protocol adapter 401 is selected to transmit the NBAP control message. The ATM protocol adapter 401 is processed by the SSCF-UNI protocol to form a SSCF-UNI protocol data unit, and then processed by the SSCOP protocol to form an SSCOP protocol data unit, and then processed by the AAL5 protocol. Process to form AAL5 protocol data unit and add the sequence of ATM protocol header to form ATM cell, which is handed over to VDSL transceiver for transmission; if the Iub interface of the base station controller supports IP mode, and the network side of the VDSL central office equipment supports Ethernet interface, then select the IPOP protocol Adapter 403 carries out the transmission of NBAP control message, and IPOP protocol adapter 403 forms SCTP protocol data unit through SCTP protocol processing, adds IP protocol processing to form the sequence processing of Ethernet frame and then hands it over to VDSL transceiver for transmission; if the base station controller only supports IP mode, and the VDSL central office equipment network side only supports the ATM interface, then select the IPOA protocol adapter 402 to carry out the transmission of the NBAP control message, the IPOA protocol adapter 402 is processed by the SCTP protocol, and then processed by the IP protocol to form Ethernet frame sequence processing, After IPOA (IPOverATM) protocol processing, ATM cells are formed and then transmitted by VDSL transceivers.

As the method shown in accompanying drawing 7 of the description of the invention, the process of signal flow step 702 transmitting user data is: the transmission protocol adapter 301 supports various transmission channel frames according to the interface protocol of the base station controller end and the VDSL central office equipment (VTU-O) According to the protocol situation, various transmission channel frames are mapped into ATM cells (ATMCell) or Ethernet frames respectively; the three situations of mapping are as follows: if the Iub interface of the base station controller only supports If the ATM interface is supported, the ATM protocol adapter 401 is selected to transmit various transmission channel frames. The ATM protocol adapter 401 is processed by the AAL2 protocol to form an AAL2 protocol data unit, and the order of the ATM protocol header is added to form an ATM cell, which is sent and received by VDSL If the base station controller Iub interface supports the IP mode, and the VDSL central office equipment network side supports the Ethernet interface, then select the IPOP protocol adapter 403 to carry out the transmission of various transmission channel frames, and the IPOP protocol adapter 403 forms UDP protocol data through UDP protocol processing Unit, and then through the IP protocol to form the sequence of Ethernet frames and then handed over to the VDSL transceiver for transmission; if the Iub interface of the base station controller only supports IP mode, and the network side of the VDSL central office equipment only supports ATM interface, then select the IPOA protocol adapter 402 carries out various transmission channel frame transmissions, and the IPOA protocol adapter 402 forms a UDP protocol data unit through UDP protocol processing, and then after IP protocol processing forms Ethernet frame sequence processing, then forms ATM signal through IPOA (IP OverATM) protocol processing After the yuan is transmitted by the VDSL transceiver.

The ATM protocol adapter 401, IPOA protocol adapter and IPOP protocol adapter in the transmission protocol adapter 301 not only complete the transmission of NBAP messages and user data, but also complete the control function of the transmission network.

As the method shown in accompanying drawing 7 of the description of the invention, the method of signal flow step 704 is: the ATM cell or (and) Ethernet frame that step 702 produces is sent to VDSL transceiver 302, according to main control unit to VDSL transmission interface unit 200 In the initialization setting, the three types of VDSL uplink bearer data (wireless network control information, transmission network control information and user data) in process 702 are aggregated into fast and slow channel data frames in the VDSL transceiver. Then, the fast and slow channel data frames are respectively framed, scrambled, and modulated into physical layer signals suitable for twisted pair transmission and sent to the base station controller VDSL office equipment (VTU-O), and then the VDSL office equipment Send to the base station controller 106,107.

Now in conjunction with accompanying drawing 8, a kind of base station equipment of the present invention is described in detail the method step of receiving data from base station controller (106) by VDSL transmission:

As the method shown in accompanying drawing 8 of the description of the invention, the method of the signal flow step 800 is: the PMS-TC module 504 and the PMD module 505 of the VDSL transmission interface unit 200 demodulate and descramble the downlink speed from the twisted pair physical medium Then the VDSL transmission frame is demultiplexed into an ATM cell or (and) an Ethernet frame according to the system initialization agreement and sent to the VDSL transmission protocol adapter 302, and then submitted to a higher layer ATM cell or Ethernet frame is Determined by the Iub interface type of the base station controller and the transmission protocol supported by the network side interface type of the VDSL central office equipment: if the Iub interface of the base station controller supports the ATM interface and the network side of the VDSL central office equipment supports the ATM interface, the ATM cell is submitted Give ATM protocol adapter; If the interface of base station controller Iub supports IP mode, and the VDSL central office equipment network side only supports ATM interface, then ATM cell is submitted to IPOA protocol adapter; If the Iub interface of base station controller supports IP mode, If the network side of the VDSL central office equipment supports the Ethernet interface, the Ethernet frame is submitted to the IPOP protocol adapter;

As the method shown in accompanying drawing 8 of the description of the invention, the method of signal flow step 802 is: after the Ethernet frame and (or) ATM cell that step 802 produces are submitted to the transmission protocol adapter, the transmission protocol adapter is according to the reverse processing sequence with 702 Adapt ATM cells or Ethernet frames into NBAP protocol service data units and user data frames and submit them to the wireless network protocol processor; the wireless network protocol processor data units are then demultiplexed into control information, operation and maintenance information and user data frames The data is sent to the base station control unit 215 or the band processing unit 207 respectively.

Claims (7)

1. the base station equipment (110) with VDSL coffret comprises radio frequency unit (201), base station control unit (215), baseband processing unit (207); It is characterized in that: also comprise VDSL coffret unit (200); Described VDSL coffret unit (200) is connected with baseband processing unit (207), base station control unit (215), outer twisted pairs physical transmission medium (213,214); Described radio frequency unit (201) is connected with antenna (202), base station control unit (215), baseband processing unit (207); Described baseband processing unit (207) is connected with radio frequency unit (201), base station control unit (215), VDSL coffret unit (200).

2. base station equipment as claimed in claim 1 is characterized in that: VDSL coffret unit (200) comprising: wireless network protocol processor (300), VDSL transmsision protocol adaptor (301), VDSL transceiver (302); Described wireless network protocol processor (300) is connected with baseband processing unit (207), VDSL transmsision protocol adaptor (301); Described VDSL transmsision protocol adaptor (301) is connected with wireless network protocol processor (300), VDSL transceiver (302); Described VDSL transceiver (302) is connected with VDSL transmsision protocol adaptor, twisted-pair feeder physical transmission medium (213,214).

3. base station equipment as claimed in claim 2 is characterized in that the VDSL transmsision protocol adaptor comprises: ATM protocol adaptor (401); Described ATM protocol adaptor (401) is connected with ATM-TC (500) with wireless network protocol processor (300); Described ATM-TC (500) is a functional unit of VDSL transceiver (302).

4. base station equipment as claimed in claim 2 is characterized in that the VDSL transmsision protocol adaptor comprises: IPOA protocol adaptor (402); Described IPOA protocol adaptor (402) is connected with ATM-TC (500) with wireless network protocol processor (300).

5. base station equipment as claimed in claim 2 is characterized in that the VDSL transmsision protocol adaptor comprises: IPOP protocol adaptor (403); Described IPOP protocol adaptor (403) is connected with PTM-TC (501) with wireless network protocol processor (300); Described PTM-TC (501) is a functional unit of VDSL transceiver (302).

6. a base station equipment comprises the following steps: by the method for VDSL coffret to base station controller transmission data

(1), the system controller of base station equipment is delivered to control report, status report, measurement report, the control response message that will send to base station controller the wireless network protocol processor of VDSL coffret unit by interface, the wireless network protocol processor is packaged into NBAP (Node B ApplicationProtocol) protocol Data Unit to described control report, status report, measurement report, control response message, transfers to the transmission of VDSL transmsision protocol adaptor then;

(2), the VDSL transmsision protocol adaptor of base station equipment according to the prior agreement of local side VDSL equipment (VTU-O) and base station controller, the wireless network protocol data cell is packaged into ATM cell and/or ethernet frame is given the transmission of VDSL transceiver respectively;

(3), the VDSL transceiver of base station equipment the ATM cell of VDSL transmsision protocol adaptor and/or ethernet frame pooled soon at the VDSL transceiver, the slow channel Frame, then, hurry up, the slow channel Frame respectively by framing, scrambling, be modulated into the VDSL physical signalling and send to local side VDSL equipment (VTU-O) by the twisted-pair feeder physical medium, local side VDSL equipment (VTU-O) is transferred to base station controller again.

7. a base station equipment comprises the following steps: by the method for VDSL coffret from base station controller reception data

(1), the physical signalling demodulation that the local side VDSL equipment (VTU-O) that receives is sended over of the VDSL transceiver of base station equipment, be decoded into the VDSL transmission frame, according to prior agreement the VDSL transmission frame is demultiplexed into ATM cell again and/or ethernet frame sends to the VDSL transmsision protocol adaptor with local side VDSL equipment (VTU-O) and base station controller;

(2), after ethernet frame and/or ATM cell submit to the VDSL transmsision protocol adaptor, the VDSL transmsision protocol adaptor is submitted to the wireless network protocol processor after with the prior agreement of local side VDSL equipment (VTU-O) and base station controller the ATM cell of the VDSL transceiver transmission that receives or ethernet frame being adapted to NBAP protocol Data Unit, user data frame; The wireless network protocol processor the NBAP protocol Data Unit received, user data frame more respectively demultiplexing be that control information, user data and Operation and Maintenance information send to base station control unit or baseband processing unit.

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