WO2003090490A1

WO2003090490A1 - A kind of remote maintain method and apparatus of direct amplifying station

Info

Publication number: WO2003090490A1
Application number: PCT/CN2003/000080
Authority: WO
Inventors: Weiming Duan; Yi Feng
Original assignee: Huawei Technologies Co. Ltd.
Priority date: 2002-04-19
Filing date: 2003-01-27
Publication date: 2003-10-30
Also published as: DE10392556T5; CN1199486C; CN1452421A; AU2003211821A1

Abstract

The present invention disclose a kind of remote maintain method of direct amplifying station. The method in which the direct amplifying station setup a wireless communication module, which goes to transmit-receive of wireless signal via upward and downward channel of direct amplifying station. By the network distribute identification, through simplex mobile station communication methods and protocols between the network and the direct amplifying station establishs a wireless communication link path. The wireless communication module receive radiofrequency signal from downward direction of direct amplifying station, obtain operating maintenance data through reception processing, and will going to send the data to operating maintenance unit of direct amplifying station, so as to realize operating maintenance of direct amplifying station. The operating maintenance data generated by direct amplifying station, which need to report to the network feed-in direct amplifying station, then via processing of the communication module, becoming upward radio-frequency signal, and send out to the base station. Adopting aforesaid scheme can just paid out fewer cost, so that can realize reliable remote maintenance of direct amplifying station, and without require for environments of direct amplifying station. The present invention also disclose a kind of remote maintain apparatus of direct amplifying station.

Description

Remote maintenance method and device of repeater

The present invention relates to a method and a device for remote maintenance of communication equipment in a mobile communication system, and in particular to a method and a device for maintaining a repeater in a mobile communication system.

Background technique

The repeater belongs to the same frequency amplification equipment, similar to a repeater, and is a wireless transmission relay device that enhances the signal during the wireless communication transmission process. It is mainly used for blind area coverage and suburban coverage of the system. In the existing mobile communication system, in order to solve the coverage problem, the repeater is widely used. In the downstream direction, the donor antenna picks up signals from the existing coverage area, filters out signals outside the signal band through a band-pass filter, and amplifies the filtered signal to the area to be covered after being amplified by the power amplifier. In the upstream direction, it covers The signals of the mobile stations in the area are transmitted to the corresponding base stations after similar processing, thereby realizing the signal transmission between the base stations and the mobile stations. Because the normal operation of the repeater affects the effective signal coverage of the entire base station, in order to ensure the normal operation of the network, the network urgently needs to perform remote operation and maintenance on many repeaters, and timely process the fault alarm and other information of the repeater. Adjust the working parameters of the repeater as needed. As the existing repeater does not have the capability of remote maintenance, maintenance can only be performed on site, which inevitably results in high maintenance costs and low efficiency.

Summary of the Invention

The object of the present invention is to provide a remote maintenance method and device for a repeater with lower cost, reliability and good environmental adaptability. To achieve the above objective, the remote maintenance method of the repeater provided by the present invention includes:

(1) A repeater is provided with a communication module for transmitting and receiving wireless signals through the repeater's uplink and downlink channels. The module receives a radio frequency signal transmitted by a base station from the downlink of the repeater. The uplink radio frequency signal generated by the module is transmitted from the repeater. The uplink direction of the repeater is fed into the repeater and transmitted to the base station;

(2) detecting the downlink radio frequency signal of the base station, completing downlink receiving synchronization, and maintaining receiving the broadcast and paging information of the network;

(3) The network initiates paging through the base station to the built-in communication module of the repeater; (4) The communication module initiates an access process after receiving the paging information, and establishes a repeater control entity between the repeater and the repeater in the network. Two-way wireless communication link;

(5) The network transmits the operation and maintenance information for controlling the repeater to the repeater through the downlink communication link. After receiving, the repeater performs the corresponding maintenance operation, and reports the operation and maintenance result to the network through the uplink communication link.

It is characterized in that the method further comprises:

The network assigns an identification number to the built-in communication module of the repeater connected to it, and the identification number is used to identify the repeater, and is used to establish a communication link between the network and the built-in communication module of the repeater, so as to achieve direct communication. Remote maintenance management of station.

After the network completes the maintenance control of the repeater, it releases the Chinese-oriented wireless communication link between the network and the repeater.

The repeater remote maintenance device provided by the present invention includes: a downlink receiving channel module, an uplink transmitting channel module, a radio link control and a radio resource management module, wherein: the downlink receiving channel module is configured to receive from the downlink direction of the repeater. Base station High-frequency signals to implement physical layer processing for receiving downlink signals, and to obtain the maintenance information of the control channel and service channel transmitted on the network;

The uplink transmission channel module is used to perform physical layer transmission processing on the uploaded control channel and service channel to carry the maintenance result feedback information of the repeater to generate an uplink radio frequency signal, which is fed into the repeater from the upstream direction of the repeater and transmitted to the repeater. Base station

A radio link control and radio resource management module, configured to implement media access control (MAC), radio link control (RLC), radio resource management, and an interface with an operation and maintenance module of a repeater; wherein, the media access control (MAC) Realize operations such as logical channel and transmission channel mapping, channel multiplexing and demultiplexing, and selecting a transmission format based on business traffic; Radio Link Control (RLC) implements data segmentation and reassembly, sequential transmission, error correction, and repeated detection , Flow control and other operations; wireless resource management to achieve the establishment and release of wireless links, the establishment and release of wireless bearers, the allocation, reconfiguration and release of wireless resources; the interface with the repeater's operation and maintenance module to achieve the repeater The operation and maintenance module sends remote maintenance data for the network and receives response data for the operation and maintenance of the repeater.

The downlink receiving channel module includes a down-conversion and analog-to-digital conversion (D) unit and a baseband reception processing unit, where:

A down-conversion and analog-to-digital conversion (A / D) unit, configured to receive a radio frequency signal from the downlink of the repeater, and perform down-conversion and analog-to-digital conversion (D) processing on the signal to form a digital baseband signal;

A baseband reception processing unit is configured to perform reception matching filtering, demodulation, and channel decoding processing on a digital baseband signal to obtain the information of a control channel and a service channel, and send the data to the radio link control and radio resource management. unit. The uplink transmission channel module includes a digital-to-analog conversion (D / A), an up-conversion unit, and a baseband transmission processing unit, where:

A baseband transmission processing unit, configured to perform channel coding, modulation, and shaping filtering on the uploaded control channel and service channel information;

Digital-to-analog conversion (D / A) and up-conversion unit, for performing digital-to-analog conversion (D / A) and frequency conversion on the modulation data of the baseband transmission processing unit to form an uplink radio frequency signal, and feeding the signal to the repeater's The uplink direction is sent to the base station.

The present invention sets a wireless communication module in the repeater, which transmits and receives wireless signals through the uplink and downlink channels of the repeater, and establishes a wireless communication chain with the repeater control entity of the network by using the communication protocol of the mobile station The remote maintenance information of the network is delivered to the repeater through this link to realize the remote maintenance of the repeater. The set wireless communication module is assigned a special identification number by the network, and the wireless link is established according to the standard protocol of the mobile station. In terms of implementation, the communication module is greatly simplified compared to ordinary mobile stations: The uplink and downlink channels of the repeater transmit and receive wireless signals, so no RF power amplifier and RF filtering are needed, which saves costs. Because the RF signal transmission between the repeater and the base station is transmitted by directional wireless transmission or fiber optic transmission, signal propagation conditions Good, so it can simplify signal reception and reduce implementation complexity. Since the wireless communication module only maintains a communication link with the fixed cell of the base station during one communication process, complex operations such as soft handover and handover-related measurements can be eliminated; It is only used to transmit data information, so high-level service processing functions, such as voice processing, may not be required. In this way, it is possible to achieve reliable remote maintenance of the repeater at a lower cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart of a method for performing maintenance on a repeater according to the present invention;

FIG. 2 is a block diagram of an embodiment of the device according to the present invention;

FIG. 3 is a block diagram of a repeater to which the embodiment described in FIG. 1 is applied.

detailed description

The essence of the present invention is to set a wireless communication module in the repeater. The module is similar in function to a simplified mobile station, but it does not need the mobile station's radio frequency power amplifier, radio frequency filtering and other units, and does not need high-level business functions such as voice. With the help of reliable wireless or fiber propagation conditions between the repeater and the base station, the radio resource management functions of the communication module can be simplified to a certain extent. Compared with a mobile station, the added communication module is simpler than a standard mobile station and the cost is relatively low. Since the wireless communication module integrated in the repeater needs to establish, maintain and release the wireless communication link according to the standard mobile station protocol, the network needs to assign a specific identification number to the repeater.

The wireless communication module receives downlink RF signals from the output terminal of the repeater, such as the output of a filter, and performs downlink reception processing. At the same time, the uplink RF signals generated from the input terminal of the repeater, such as low The input of the noise amplifier is fed into the repeater and transmitted to the base station via the uplink direction of the repeater. The wireless communication module can implement the physical layer function, the media access control (MAC) function, the radio link control (RLC) function, the radio resource management function, etc. of the radio interface of a specific mobile communication system, and provide operation with the repeater. The interface of the maintenance unit transmits the operation and maintenance information of the repeater. Specifically, the functions of the physical layer functional entity implemented by the wireless communication module include a physical layer processing procedure for receiving downlink signals and a physical layer processing procedure for transmitting uplink signals. Among them, the physical layer processing of receiving the downlink signal is the output from the repeater in the downlink direction. Terminal, for example, picking up the radio frequency signal issued by the base station at the output end of the filter, and performing frequency conversion processing, analog-to-digital conversion (A / D), receiving digital filtering, digital baseband demodulation, channel decoding and other processing on the radio frequency signal to obtain The downlink service channel (bearing the maintenance information of the network) and control channel information; the physical layer process of the uplink signal transmission is channel coding of the uplink service channel (bearing the maintenance feedback information of the repeater) and control channel information. , Digital baseband modulation, transmit shaping filtering, digital-to-analog conversion (D / A), frequency conversion and other processing to form an uplink RF signal, and feed it through the uplink input from the repeater, such as the input of a low-noise amplifier Repeater and then send it to the base station.

The media access control (MAC) functional entity implemented by the wireless communication module conforms to the media access control (MAC) protocol standard of a specific mobile communication system, interfaces downward with the physical layer functional entity, and upwards with the wireless link control function The physical interface implements functions such as mapping of logical channels and transmission channels, channel multiplexing / demultiplexing, and selecting a transmission format according to service traffic.

The radio link control (RLC) functional entity implemented by the radio management module conforms to a radio link control (RLC) protocol standard of a specific mobile communication system, interfaces downward with a media access control (MAC) entity, and upwards with The radio resource management function entity interface implements functions such as data segmentation / reassembly, sequential transmission, error correction, duplicate detection, and flow control.

The radio resource management function entity implemented by the radio management module conforms to the radio resource management protocol standard of a specific mobile communication system, interfaces downward with a radio link control (RLC) function entity, and operates and maintains with the repeater Functional entity interface to realize the functions of simplifying the establishment and release of the wireless link of the mobile station, the establishment and release of the wireless bearer, the allocation of the wireless resources, the reconfiguration and release, and the operation and maintenance of the repeater The functional entity provides a data communication interface.

The invention is described in further detail below with reference to the drawings.

FIG. 1 is a flowchart of the method for performing maintenance on a repeater according to the present invention. The maintenance of the repeater described in FIG. 1 is implemented based on the above wireless communication module. First, the module performs synchronization of downlink reception through the module in step 1 and monitors broadcasts and paging on the network. In step 2, the network initiates paging for the module, and the module initiates the access process to establish a wireless communication link. 3. The network sends the maintenance data of the repeater; in step 4, the repeater receives the maintenance data through the module to implement the maintenance operation; in step 5, the repeater feeds the operation and maintenance results to the network through the module; in step 6. Release the wireless communication link.

FIG. 1 is a block diagram of an embodiment of the device according to the present invention. The repeater maintenance device shown in FIG. 2 includes a downlink receiving channel module 1, an uplink transmitting channel module 2 and a radio link control and radio resource management module 3. The device communicates with the network in accordance with the standard mobile station communication protocol, and is integrated with the repeater when in use, and picks up and processes RF signals from the repeater. For example, it can pick up RF from the output of a band-pass filter in the downstream direction. The signal realizes the downlink signal reception of the base station, and at the same time, the radio frequency signal generated by the device is fed into the uplink direction of the repeater, for example, the low-noise amplifier in the uplink direction is processed by the repeater and sent to the base station. Specifically ₅

A downlink receiving channel module, configured to receive a radio frequency signal transmitted by a base station from a downlink direction of the repeater, to implement physical layer processing for receiving a downlink signal, and to obtain information of a control channel and a service channel (bearing network maintenance information) transmitted;

The uplink transmission channel module is configured to perform physical layer transmission processing on the uploaded control channel and service channel (bearing the maintenance feedback information of the repeater) to generate uplink radio frequency signals, and Enter the repeater's uplink direction and transmit to the base station;

Radio link control and radio resource management module, for implementing media access control function (MAC), radio link control function (RLC), radio resource management function, and operation and maintenance module interface 0 with repeater; among them, media access Control (MAC) implements operations such as mapping logical channels and transmission channels, multiplexing and demultiplexing channels, and selecting transmission formats based on business traffic; Radio Link Control (RLC) implements data segmentation and reassembly, sequential transmission, and correction Operations such as error detection, duplicate detection, and flow control; radio resource management to implement radio link establishment and release, radio bearer establishment and release, radio resource allocation, reconfiguration, and release operations; interface implementation with the operation and maintenance module of the repeater Send the remote maintenance data of the network to the operation and maintenance module of the repeater, and receive the response data of the operation and maintenance of the repeater.

The above-mentioned downlink receiving channel module 1 includes a down-conversion and analog-to-digital conversion (D) unit 11 and a baseband reception processing unit 12, wherein:

A down-conversion and analog-to-digital conversion / D) unit, configured to receive a radio frequency signal from the downlink of the repeater, and perform down-conversion and analog-to-digital conversion (A / D) processing on the signal to form a digital baseband signal;

A baseband reception processing unit is configured to perform reception matching filtering, demodulation, and channel decoding processing on a digital baseband signal to obtain a downlink control channel and a service channel (bearing network maintenance information); and send the data to a wireless link Control and radio resource management unit.

The above uplink receiving channel module 2 includes a digital-to-analog conversion (D / A) and up-conversion unit 21, and a baseband transmission processing unit 22, where:

The baseband transmission processing unit is configured to perform channel coding, modulation, and shaping filtering on the uploaded control channel and service channel information; Digital-to-analog conversion (D / A) and up-conversion unit, for performing digital-to-analog conversion (D / A) and frequency conversion on the modulation data of the baseband transmission processing unit to form an uplink radio frequency signal, and feeding the signal to the repeater's The uplink direction is sent to the base station.

The repeater maintenance device shown in Fig. 2 needs to be embedded in the repeater for practical use. It connects the up and down directions of the repeater with the operation and maintenance unit of the repeater. Refer to Figure 3. In Figure 3, it is specifically connected to the output of the downstream filter and the input of the upstream low noise amplifier. During the specific maintenance operation, the donor antenna picks up the radio frequency signal from the base station from the existing coverage area, and transmits it through the duplexer through the low-noise amplifier, band selector, and filter in the forward direction to the direct-current device of the present invention. Repeater maintenance device. The repeater maintenance data is processed by the device, and the repeater operation and maintenance is realized through the interface with the repeater operation and maintenance unit. The information transmitted also includes wireless communication signaling. The radio resource management entity of the device processes it. The device receives the operation and maintenance data that the repeater needs to upload, plus the signalling data attached to the device. These data become an uplink radio frequency signal through a series of processing. The low-noise amplifier, band selector, filter, power amplifier, duplexer, and donor antenna are fed back to the base station.

Finally, it needs to be explained that when the remote maintenance device of the repeater according to the present invention accesses different embedded positions of the repeater in the up-down direction, its module structure or function may change. Taking FIG. 3 as an example, when the downlink access point of the maintenance device is connected to the output of the frequency band selector, a filtering module needs to be added to the maintenance device; when the uplink access point of the maintenance device is connected to the frequency band selector When the input terminal is used, a low-noise amplifier module needs to be added to the maintenance device.

Claims

Rights request

1. A remote maintenance method for a repeater, including:

2. The remote maintenance method for a repeater according to claim 1, further comprising: a network assigning an identification number to a built-in communication module of the repeater connected to the network, the identification number being used to identify the repeater Repeater, and is used to establish a communication link between the network and the built-in communication module of the repeater to achieve remote maintenance management of the repeater.

3. The remote maintenance method for a repeater according to claim 1 or 1, further comprising: after the network completes the maintenance control of the repeater, releasing the two-way wireless communication between the network and the repeater. link.

4. A repeater remote maintenance device, comprising: a downlink receiving channel module and an uplink A transmitting channel module, a wireless link control and a wireless resource management module, wherein: a downlink receiving channel module is configured to receive a radio frequency signal transmitted by a base station from a downlink direction of a repeater to implement physical layer processing for receiving a downlink signal and obtain a downlink transmission Control channels and service channels carry network maintenance information;

The uplink transmission channel module is used to perform physical layer transmission processing on the uploaded control channel and service channel to carry the maintenance result feedback information of the repeater to generate an uplink RF signal, which is fed from the repeater to the repeater and transmitted to the repeater. Base station

A radio link control and radio resource management module, configured to implement media access control (AC) radio link control (RLC), radio resource management, and an interface with an operation and maintenance module of a repeater; wherein, a media access control (MAC) implementation Mapping of logical channels and transmission channels, channel multiplexing and demultiplexing, selecting transmission formats based on business traffic, and other operations; Radio Link Control (RLC) implements data segmentation and reassembly, sequential transmission, error correction, repeated detection, Operations such as flow control; wireless resource management to achieve the establishment and release of wireless links, the establishment and release of wireless bearers, the allocation, reconfiguration, and release of wireless resources; the interface with the repeater's operation and maintenance module to achieve the repeater The operation and maintenance module sends remote maintenance data of the network, and at the same time receives response data of the operation and maintenance of the repeater.

5. The remote maintenance device according to claim 4, wherein: the downlink receiving channel module comprises a down conversion and analog-to-digital conversion (D) unit, and a baseband reception processing unit, wherein:

A down-conversion and analog-to-digital conversion (A / D) unit, configured to receive a radio frequency signal from the downlink of the repeater, and perform down-conversion and analog-to-digital conversion (A / D) processing on the signal to form a digital baseband signal; A baseband reception processing unit is configured to perform reception matching filtering, demodulation, and channel decoding processing on a digital baseband signal to obtain the information of a control channel and a service channel, and send the data to the radio link control and radio resource management. unit.

6. The remote maintenance device according to claim 5, wherein the uplink transmission channel module comprises a digital-to-analog conversion (D / A), an up-conversion unit, and a baseband transmission processing unit, wherein: