JP2006191694A - Base station transmitting and receiving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a minimum zone flexibly matching a variety of station installation conditions at low cost for a base station transmitting and receiving device, which forms a minimum zone in a mobile communications system. <P>SOLUTION: The base station transmitting and receiving device, including a plurality of transmitting and receiving means which face a mobile station positioned in a radio zone and mutually transmits transmitted information by radio; a channel control means of performing radio channel setting control; and a supervisory control means of monitoring the operation states of the plurality of transmitting and receiving means and the channel control means is characterized in that the number (n) of the plurality of transmitting and receiving means is set to the larger of the values between the maximum value of the number of a plurality of sectors, when the radio zone constitutes the plurality of sectors and the maximum value of the number of a radio frequency which can be allocated to a radio zone, when the single radio zone is constituted and the channel control means, supervisory control means, and an integrated control means are merged into a single control means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a mobile communication system under a radio channel setting control performed by a radio network controller that is installed in an area where traffic is locally large or in a dead zone to form a minimum zone and is connected via a communication link. The present invention relates to a base station transmission / reception apparatus that forms a wireless transmission path with a mobile station.

In recent years, in the mobile communication system, the number of subscribers has increased with the progress of market liberalization and competition conducted by a plurality of communication entities, and further according to the expansion of the service area covered by these communication entities. Demand is increasing.
In addition, each telecommunications carrier applies a radio frequency of 1.5 GHz band in addition to the 800 MHz band allocated to the current system in order to adapt to such demand, and also uses a dynamic channel assignment (DCA) system, a micro zone. By adopting configuration and other technologies, effective use of radio frequencies is being pursued.

Furthermore, for a radio base station to be installed in order to secure a service area in a mobile communication system to which such a minimum zone configuration is applied, the number is a large value that is inversely proportional to the square of the average radius of each minimum zone. Therefore, the development of technology that realizes low cost and downsizing is underway.
FIG. 8 is a diagram illustrating a configuration example of a conventional radio base station.

In the figure, a line terminator 90 is connected to a radio channel control station (not shown) via a communication link 91, and one port of the line terminator 90 is connected to a communication port of a base station transceiver 92. The plurality of antenna terminals of the base station transceiver 92 are individually connected to the corresponding terminals of the common amplifying device 93, and the antenna terminals of the common amplifying device 93 are connected to the feeding terminals of _one or more antennas 94 _{1 to} 94 _N. Is done. The other port of the line termination device 90 is connected to the communication port of the monitoring control device 95, and the monitoring outputs of the common amplification device 93 and the base station transmission / reception device 92 are input to the first to sixth inputs of the monitoring control device 95, Rectifier 96, battery 97, door 98, and air conditioner 99 are connected to corresponding output terminals.

FIG. 9 is a diagram illustrating a configuration of a conventional base station transceiver device.
In the figure, the communication port of the voice / control signal input / output unit 100 is connected to one port of the line terminating device 90 described above, and the voice / control signal input / output unit 100 has an input / output terminal corresponding to the communication port. Are connected to corresponding input / output terminals of the time division switch 101. The ports that the time division switch 101 has individually corresponding to a plurality of radio frequencies are respectively transmitted / received units 103 _{1 to} 103 via radio control units 102 _{1 to} 102 _n provided individually corresponding to these radio frequencies. Connected to _n modulation / demodulation terminal. The outputs of the transceivers 103 _{1 to} 103 _n are divided into predetermined combinations and connected to the inputs of the synthesizers 104 _{1 to} 104 _N , respectively. The inputs of these transceivers 103 _{1 to} 103 _n are similar combinations. The corresponding outputs of the distributors 105 _{1 to} 105 _N are connected to each other. The outputs of the combiners 104 _{1 to} 104 _N and the inputs of the distributors 105 _{1 to} 105 _N are connected to corresponding input / output terminals of the common amplifier 93. Among the ports of the time division switch 101, specific ports other than the above-described ports are connected to the communication port of the interface unit 106, and one bus terminal of the interface unit 106 is connected to the wireless control unit 102 ₁ via the control bus 107. It is connected to the bus terminals of the to 102 _n. The other bus terminal of the interface unit 106 is connected to bus terminals of the main control unit 108, the system data storage unit 109, the monitoring control unit 110, and the main memory 111 via an internal bus.

  In the radio base station having such a configuration, the system data storage unit 109 provided in the base station transmission / reception device 92 is assigned to one or a plurality of radio zones to be formed by the own station and these radio zones. In addition to a control radio channel (hereinafter simply referred to as “control channel”), control information (hereinafter simply referred to as “control channel”) related to radio channel setting control to be performed facing a mobile station located in each radio zone. Station information ”) is stored in advance.

The main control unit 108 connects the communication link 91 connected via the line terminating device 90 and the voice / control signal input / output unit 100 to the interface unit 106 and the radio control units 102 _{1 to} 102 _n. A speech path is formed inside the time division switch 101.
Further, the main control unit 108 executes the program in the same manner in a steady operation state, thereby referring to the communication link 91, the line terminating device 90, and the voice / control signal input / output unit 100 while referring to the station information. Then, radio channel setting control is performed based on an instruction given from the radio channel control station via the communication path formed in the time division switch 101.

In the process of such radio channel setting control, the main control unit 108 transmits and receives information related to control and monitoring of the transmission / reception units 103 _{1 to} 103 _n facing the radio control units 102 _{1 to} 102 _N , respectively. The wireless control units 102 _{1 to} 102 _n are based on the control procedures performed by the wireless control units 102 _{1 to} 102 _n , respectively, and the transmission / reception units 103 _{1 to} 103 _n , the combiners 104 _{1 to} 104 _N , and the distributor 105 _1. to 105 _N, through a common amplifier unit 93 and the antenna 94 ₁ to 94 _N, for transmitting and receiving various control information to replace the radio channel setting control described above so as to face the mobile station located in the radio zone of own station. The common amplifying device 93 amplifies transmission waves individually given from the transmission / reception units 103 _{1 to} 103 _n via the combiners 104 _{1 to} 104 _N with a predetermined gain, so that the antennas 94 _{1 to} 94 _N are amplified. The position, size and shape of the radio zone to be formed by the local station are determined under the gain and directivity.

  Further, the main control unit 108 analyzes the control information received from the mobile station in this way, and appropriately generates information including such control information and information indicating that the control information has been identified. At the same time, the information is transmitted to the radio network controller via the time division switch 101, the voice / control signal input / output unit 100, the network termination device 90, and the communication link 91. Hereinafter, a series of processes performed by the main control unit 108 in this way is referred to as “radio channel setting control process”.

  Further, the monitoring control unit 110 recognizes what constitutes the base station transmission / reception device 92 among the hardware constituting the own station based on the station information stored in the system data storage unit 109, and the hardware is preliminarily determined. A predetermined item is monitored at a predetermined frequency and timing. Furthermore, the monitoring control unit 110 provides the monitoring control device 95 with binary information indicating whether any of the items to be monitored is abnormal. Hereinafter, the process performed by the monitoring control unit 110 in this way is referred to as “monitoring control inside the base station transmission / reception apparatus”.

  On the other hand, the main control unit 108 executes the program stored in the main memory 111 to control all the components constituting the base station transmitting / receiving apparatus 92, thereby controlling the operation status and maintenance of the own station. Collect information to be used for operation and output the information to a terminal (not shown) or via the interface unit 106, the time division switch 101, the voice / control signal input / output unit 100, the line terminator 90, and the communication link 91. Send to the radio network controller. Hereinafter, processing performed by the main control unit 108 in this way is referred to as “overall control processing”.

  Further, the monitoring control device 95 monitors each item shown in FIG. 10 for the rectifier 96, the battery 97, the door 98, the air conditioner 99, the line terminating device 90 and others, and in accordance with the monitoring result, as described above. The binary information given from the base station transmission / reception device 92 is appropriately notified to the radio network controller via the network termination device 90 and the communication link 91. In the following, the processing performed by the monitoring control device 95 in this way is referred to as “monitoring control processing”.

By the way, in the above-described conventional example, the antennas 94 _{1 to} 94 _N individually connected to the combiners 104 _{1 to} 104 _N and the distributors 105 _{1 to} 105 _N are connected via the common amplifier 93, and these antennas 94 are connected. a plurality of sectors (minimum zone) is formed by a ₁ to 94 _N. However, for example, as shown in FIG. 11, a single combiner 104 in which these are merged instead of the combiners 104 _{1 to} 104 _N and these are merged in place of the distributors 105 _{1 to} 105 _N. A common radio zone may be formed by a single antenna 94 ₁ connected to a single distributor 105 via a common amplifier 93.

Hereinafter, as described above, the configuration of the base station transmission / reception apparatus including a plurality of sectors is simply referred to as “sector configuration”, and conversely, the configuration in which a common radio zone is formed is simply referred to as “omni configuration”. That's it.
Further, in the above-described conventional example, there is no description about the multiple access method of the wireless transmission path formed via the transmission / reception units 103 _{1 to} 103 _n , but in the following, for simplicity, 3 time slots are multiplexed. The applied TDMA scheme is applied.

However, in the conventional base station transmission / reception apparatus described above, the number n of the radio control units 102 _{1 to} 102 _n and the transmission / reception units 103 _{1 to} 103 _n has been standardized for the purpose of being installed in all radio base stations. And “72” was set to a large value.
Therefore, for a base station transceiver device installed in a small-sized radio base station with a small number n, useless space in which no units are mounted in units of slots or shelves is generated inside the rack in which the device is accommodated. In addition, due to the large size and weight of the rack, the mounting efficiency is low and the cost is high. In addition, it takes a lot of man-hours for installation and relocation. In many cases, there were restrictions on the height of the car, the loading path, and so on.

Further, the synthesizers 104 _{1 to} 104 _N , the distributors 105 _{1 to} 105 _N and the cables connected to them may be increased up to “72” which is the maximum number regardless of the number n described above. In order to be adaptable, mounting and laying were often performed in advance for all.
However, since these combiners 104 _{1 to} 104 _N , distributors 105 _{1 to} 105 _N and cables are not supposed to be essentially replaceable components, for example, they are adapted to a base station having a sector configuration once. If it is required to convert a base station transmitter / receiver that has started operating in the above configuration to an omni-configured base station, significant modifications are required. It was difficult to respond quickly because the number of channels was limited or the operation was interrupted.

Further, in the conventional example, the radio base station is provided with a door 98, an air conditioner 99 and many other incidental facilities, and a monitoring control device 95 is separately provided for monitoring these incidental facilities. The relocation required many man-hours.
Further, in the radio network controller and the radio base station, as described above, communication control of the communication link 91 is realized in order for the monitoring controller 95 to send and receive monitoring control information regarding many items in opposition to the radio network controller. It is required to perform the processing to be performed and the processing to identify and generate the monitoring control information in parallel, and the software configuration is often complicated and the scale increases.

  An object of the present invention is to provide a base station transmission / reception apparatus that can flexibly adapt to various placement conditions and can form a minimal zone at low cost.

  According to the first aspect of the present invention, “a plurality of radio frequencies assigned to the own station are individually applied to form a radio zone, and transmission information is transmitted to each other facing mobile stations located in these radio zones. Based on a plurality of transmission / reception means for wireless transmission and a command given via the communication link by a radio network controller connected via the communication link, facing the mobile station via the plurality of transmission / reception means Channel control means for performing radio channel setting control, monitoring control means for monitoring operating states of the plurality of transmission / reception means and the channel control means, and outputting the monitoring results, the plurality of transmission / reception means, and the channel control means And a base station transmission / reception apparatus comprising an overall control unit that manages the monitoring control unit and maintains an operating rate, wherein the number n of the plurality of transmission / reception units is the wireless The maximum number of these sectors when a single zone constitutes a plurality of sectors and the maximum number of radio frequencies that can be assigned to that radio zone when constituting a single radio zone, A base station transmission / reception apparatus that is set to a large value and in which the channel control means, the monitoring control means, and the overall control means are merged as a single control means is used.

FIG. 1 is a principle block diagram of first and second inventions related to the present invention.
The first invention forms a radio zone by individually applying a plurality of radio frequencies assigned to the own station, and transmits a plurality of transmission information to each other in a wireless manner facing mobile stations located in these radio zones. Mobile station via a plurality of transmission / reception means 11 _{1 to} 11 _n based on a command given via the communication link by the transmission / reception means 11 _{1 to} 11 _n and the radio network controller connected via the communication link A channel control unit 12 that performs radio channel setting control opposite to the monitor unit, a monitoring control unit 13 that monitors the operation status of the plurality of transmission / reception units 11 _{1 to} 11 _n and the channel control unit 12, and outputs the monitoring results; transmitting and receiving means 11 ₁ to 11 _n, the base station transceiver that includes a centralized control unit 14 to maintain the overall to operating ratio of the channel control unit 12 and the monitoring control unit 13, feeding a plurality of Number n of signal means 11 ₁ to 11 _n has a maximum value of the number of sectors in a case where the radio zones constituting a plurality of sectors, assigned to the radio zone in case of configuring a single radio zone on the opposite The channel control means 12, the monitoring control means 13, and the overall control means 14 are merged as a single control means, which is set to a larger value among the maximum number of radio frequencies to be obtained.

  2nd invention is the base station transmission / reception apparatus which concerns on 1st invention, With respect to the communication link and relay line among the control information and transmission information which are transmitted / received via a communication link and the trunk line which extends this Single control by extracting control information and transmission information whose destination is the own station under either one of the transmission method applied in advance and the allocation of the preset transmission channel and the communication procedure selected in advance The communication control means 21 is provided for relaying control information and transmission information, which are given to the means, to other stations, to the subsequent transmission section.

FIG. 2 is a principle block diagram of the third invention related to the present invention.
The third invention is a base station transmission / reception apparatus 31 constituting the second invention described above, and a single or a plurality of base stations transmission / reception apparatuses 31 connected in cascade via a relay line and constituting the second invention. Base station transceivers 32 _{1 to} 32 _n are provided.
In the base station transmitting / receiving apparatus according to the first invention, a plurality of radio frequencies assigned to the own station are individually applied to form a radio zone, and the mobile stations located in these radio zones are opposed to each other. The number of the transmission / reception means 11 _{1 to} 11 _n for wirelessly transmitting the transmission information is configured as a single wireless zone on the contrary to the maximum value of the number of sectors when the wireless zone is configured as a plurality of sectors. In this case, it is set to a larger value from the maximum value of the number of radio frequencies that can be assigned.

Also, channel control means 12 for performing radio channel setting control via transmission / reception means 11 _{1 to} 11 _n based on a command given from the radio network controller via the communication link, and these transmission / reception means 11 _{1 to} 11 _n and Together with the monitoring control means 13 that monitors the operating status of the channel control means 12 and outputs the result, the transmission / reception means 11 _{1 to} 11 _n , the channel control means 12 and the monitoring control means 13 are integrated to operate. Are integrated as a single control means.

That is, the number n of the transmission / reception means 11 _{1 to} 11 _n is set to a minimum value adapted to the form and scale of the radio zone to be formed by the radio base station to which the present invention is applied, and these transmission / reception means 11 _1. ˜11 _n and the communication link are combined with means for performing radio channel setting control and monitoring control of each unit. Accordingly, such a number n is set to a value that can be adapted to the maximum scale of the radio zone to be formed by the radio base station, and the same radio channel setting control and monitoring control are distributed among a plurality of control means. Compared to the conventional example in which a large load is distributed, the hardware configuration can be simplified and the scale can be reduced.

  In the base station transmitting / receiving apparatus according to the second aspect of the invention, the communication control means 21 controls the communication link and the relay line among the control information and the transmission information transmitted / received via the communication link and the relay line extending the communication link. Single control by extracting the control information and the transmission information to which the destination is based on either the transmission method applied in advance and the allocation of the preset transmission channel or the communication procedure selected in advance. The control information and transmission information whose destination is the other station are relayed to the subsequent transmission section.

That is, among the control information and transmission information given from the radio network controller via the communication link, the radio channel setting control and monitoring control is performed for the destination addressed to the own station in the same manner as the first invention described above. Given to a single control means to perform, those destined for other stations are appropriately relayed to the trunk line.
Therefore, the plurality of base station transmission / reception apparatuses according to the present invention are cascade-connected via the above-described relay line without being individually connected to the radio network controller via the communication link, and are installed in the base station. This greatly reduces the number and length of communication links to be laid.

In the radio base station according to the third aspect of the invention, the base station transceiver 31 is connected to the radio network controller via a communication link, and the base station transceivers 32 _{1 to} 32 _n are cascaded via a relay line.
That is, the base station transmission / reception devices 31, 32 _{1 to} 32 _n are installed at low cost without being connected to the radio network controller via individual communication links, and a desired number of radio zones, Since the sector and the radio channel are formed by the building block method, it is possible to flexibly install radio base stations having various configurations.

In the present invention, the number of transmission / reception means is set to a minimum value suitable for the maximum scale of the radio zone to be formed, and the hardware configuration can be simplified and the scale can be reduced.
In the present invention, the number and length of communication links to be laid along with the installation of a plurality of base stations are greatly reduced.
In the present invention, radio base stations having various configurations are flexibly installed while adapting to both the omni configuration and the sector configuration.

  Therefore, in the mobile communication system to which these inventions are applied, the cost required for the installation, expansion, renovation and operation of the base station is greatly reduced while maintaining high performance and reliability, and the service quality for the user is improved. I can take off.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 3 is a diagram showing the first and second embodiments of the present invention.
In the figure, components having the same functions and configurations as those shown in FIG. 9 are given the same reference numerals, and description thereof is omitted here.
The difference between the present embodiment and the conventional example shown in FIG. 9 is that the maximum value of the number n of the transmission / reception units 103 _{1 to} 103 _n and the radio control units 102 _{1 to} 102 _n is set to “4”. A voice / control signal input / output unit 40 is provided instead of the control signal input / output unit 100, a clock / timing generation unit 41 is provided instead of the time division switch 101, an interface unit 106, a main control unit 108, and a supervisory control. The main control unit 43 is provided instead of the unit 110 and the main memory 111, and the antenna terminals of the transmission / reception units 103 _{1 to} 103 _n are connected to the feeding terminals of the antennas 94 _{1 to} 94 ₄ via the amplification units 44 _{1 to} 44 _4. The synthesizers 104 _{1 to} 104 _N and the distributors 105 _{1 to} 105 _N are not provided.

FIG. 4 is a diagram showing the configuration of the voice / control signal input / output unit.
In the figure, the downstream link of the route (hereinafter referred to as “main line”) to be connected to the radio network controller via the line terminator 90 and the communication link 91 is a balanced / unbalanced conversion unit (B / U) Connected to the inputs of the synchronization control unit (SYNC) 51 ₁ and the elastic memory 52 ₁ via 50 ₁ . The output of the elastic memory 52 _{1 and} the input of the multiplexer (MUX) 53 ₁ are connected to the first port of the time division switch 54 built in the clock timing generator 41, and the output of the multiplexer 53 ₁ It is connected to the up link of the main line via the unbalanced-balanced converting unit (B / U) 55 _1.

On the other hand, when the second port of the dividing switch 54 is connected to the input of the elastic memory 52 and _second output and multiplexing unit 53 _2, the output of the multiplexer 53 ₂ via the unbalanced-balanced converter 55 ₂ Thus, it is connected to the downlink of the relay line that extends the transmission section of the main line described above. Further, the uplink of the relay line is connected to the inputs of the synchronization control unit 51 ₂ and the elastic memory 52 ₂ via the balanced / unbalanced converting unit 50 ₂ .

As for the correspondence between the present invention and the block diagram shown in FIG. 1, the transmission / reception units 103 _{1 to} 103 ₄ , the amplification units 44 _{1 to} 44 ₄ and the antennas 94 _{1 to} 94 ₄ correspond to the transmission / reception means 11 _{1 to} 11 _n . The radio control units 102 _{1 to} 102 ₄ , the main control unit 43, the clock / timing generation unit 41, the voice / control signal input / output unit 40, and the main memory 111 correspond to the channel control means 12, and the main control unit 43 and the main control unit 43 The storage 111 corresponds to the monitoring control unit 13 and the overall control unit 14, and the voice / control signal input / output unit 40 corresponds to the communication control unit 21.

The operation of the first embodiment of the present invention will be described below with reference to FIG. 3 and FIG.
In the main line, as shown in FIG. 5 (a), a plurality of radio channels TCH ₁ and TCH _{2 used} for a call and control information D to be transmitted and received opposite to the radio line control station in a sector unit. A time-division multiplex transmission system having a frame structure in which a plurality of time lots TS ₁ , TS ₂ ,... Individually allocated to ₁ , D ₂ ,. It is assumed that the transmission rate of the transmission channel formed by individual time slots is 64 kbps for simplicity.

In the voice / control signal input / output unit 40, the synchronization control unit 51 ₁ takes in the transmission information given via the main line based on such a time division multiplex transmission method via the balanced / unbalanced converting unit 50 ₁ , In addition, frame synchronization and bit synchronization are established for these pieces of transmission information. The elastic memory 52 extracts and stores these pieces of transmission information under the synchronization thus established. The time division switch 54 sequentially takes in the transmission information stored in the elastic memory 52, and among these transmission information, the main control unit This is given to any _{one of} the wireless control units 102 _{1 to} 102 ₄ via the communication path set by 43.

On the other hand, the time division switch 54 gives the transmission information given from these radio control units 102 _{1 to} 102 ₄ to the multiplexing unit 53 ₁ via the above-described speech path. The multiplexing unit 53 ₁ multiplexes the transmission information thus given as a frame adapted to the time division multiplex transmission method described above, and directs the frame to the main line via the unbalance / balance conversion unit 55 _1. And send it out. Therefore, a full-duplex transmission path used for transmission / reception of control information is provided between the main control unit 43 and the radio network controller via the voice / control signal input / output unit 40 and the clock / timing generation unit 41. In addition, a full-duplex transmission path used for transmission of speech signals is provided between the transmission / reception units 103 _{1 to} 103 ₄ and the radio network controller, and the radio control units 102 _{1 to} 102 ₄ and the voice It is formed via the control signal input / output unit 40.

  Further, as described above, the main control unit 43 is configured by degenerating the interface unit 106, the main control unit 108, the monitoring control unit 110, and the main memory 111 that constitute the conventional example. In addition to the radio channel setting control processing performed, the overall control processing performed by the main control unit 108, and the monitoring control inside the base station transmission / reception device performed by the monitoring control unit 110, the monitoring performed by the monitoring control device 95 Perform control processing in parallel.

However, since the maximum value of the number n of the radio control units 102 _{1 to} 102 _n and the transmission / reception units 103 _{1 to} 103 _n is set to “4” which is significantly smaller than “72” in the conventional example, The size of hardware and information to be processed is greatly reduced. Furthermore, in the software that gives these processing procedures, each event to be processed is registered in a queue in association with a priority adapted to its importance and required responsiveness. A task configuration that is sequentially processed in descending order is adopted.

In the conventional example, the common amplifier 93 accommodated in a rack separate from the base station transceiver 92 is accommodated in a common rack together with the transceivers 103 _{1 to} 103 ₄ .
That is, with respect to the main control unit 43, the hardware scale is reduced and the configuration thereof is simplified as compared with the conventional example in which these processes are performed by distributing functions to a plurality of processors in parallel. The

Therefore, the number and scale of devices including the auxiliary equipment constituting the radio base station are reduced, the mounting efficiency is improved, the cost is reduced, and the hardware scale and weight are reduced, which is required for installation and relocation. Reduction of man-hours and elimination of restrictions related to the selection of a station building are realized.
The operation of the second embodiment of the present invention will be described below with reference to FIGS.
In the voice / control signal input / output unit 40, the time division switch 54 is assigned in advance to other stations in the transmission information received from the main line via the balanced / unbalanced converting unit 50 ₁ and the elastic memory 52 _1. for transmission information obtained through the time lot, giving the multiplexer 53 _2. The multiplexing unit 53 ₂ multiplexes these pieces of transmission information to form a frame in accordance with the frame configuration described above, and the frame is shown in FIG. 6 (a) as a dotted line based on the time division multiplex transmission method described above. As shown in Fig. 5, it is sent to the trunk line.

Further, the transmission information received under similar time division multiplex transmission method through such trunk line, elastic memory 52 ₂ via the balanced-unbalanced conversion unit 50 ₂ and the synchronous control unit 51 ₂ Given to. Synchronization control unit 51 ₂ establishes synchronization in the same manner as the synchronization control unit 51 ₁ described above, the elastic memory 52 ₂ stores the individual transmission information under its synchronization. The time division switch 54 takes in the transmission information stored in the elastic memory 52 ₂ in this way and gives it to the multiplexing unit 53 ₁ .

On the other hand, the radio base stations neighboring via trunk line, the relay circuit and the balanced-unbalanced converter 50 ₁ and the converter 55 ₁ unbalanced-balanced is connected further with other neighboring radio base station The unbalanced / balanced conversion unit 55 ₂ and the balanced / unbalanced conversion unit 50 ₂ are connected to a relay line formed between them, and the same operation is performed in each unit.
As described above, according to the present embodiment, a plurality of radio base stations with a small number of allocated radio channels do not provide individual communication links with the radio network controller, and the performance deteriorates. It is installed securely.

FIG. 7 is a diagram showing a third embodiment of the present invention.
In the figure, the base station transceiver 61 ₁ communications link 91 via the line terminal 90 is connected, its base station transceiver 61 ₁ by the base station transceiver 61 ₂ to 61 _m in sequence via the trunk line Cascade connected. The power supply terminal of the base station transceiver 61 ₁ to 61 _m rectifier 96 and the battery 97 are connected in parallel, these base stations transmitting and receiving apparatus 61 ₁ to 61 _m, both rectifier 96 and the battery 97 are common to the station Installed.

Further, the difference in configuration between the base station transceivers 61 _{1 to} 61 _m and the above-described first and second embodiments is that, as indicated by the dotted line in FIG. An amplifying unit 46 and an antenna 47 are provided in place of the amplifying units 44 _{1 to} 44 ₄ and the antennas 94 _{1 to} 94 ₄ , and antenna terminals of the transmitting / receiving units 103 _{1 to} 103 ₄ are connected to corresponding terminals of the distribution / combining unit 45. In the point.

In addition, regarding the correspondence between this embodiment and the block diagram shown in FIG. 3, the base station transmission / reception device 61 ₁ corresponds to the base station transmission / reception device 31, and 61 ₂ to 61 _m correspond to 32 _{1 to} 32 _n .
The operation of the third embodiment will be described below with reference to FIGS.
In the base station transmission / reception devices 61 _{1 to} 61 _m , the common amplification unit 46 and the distribution / synthesis unit 45 are mounted in place of the amplification units 44 _{1 to} 44 _{4 at} the mounting positions of the amplification units 44 _{1 to} 44 ₄ , and the antenna 47 Has a non-directional directivity in the horizontal direction.

Further, as shown in FIG. 5 (b), transmission information and control information are transmitted between the radio network controller and the radio base station based on a frame configuration in which time slots are not divided into sectors. Sent and received.
Further, the multiplexing units 53 ₁ and 53 ₂ included in the voice / control signal input / output unit 40 and the time division switch 54 included in the clock / timing generation unit 41 are adapted to such a frame configuration, thereby A relay process related to the line and the trunk line is performed.

As described above, according to this embodiment, a plurality of base station transmission / reception devices 61 _{1 to} 61 _m constituting the second embodiment described above are installed in the same station, so that these base station transmission / reception devices. A wireless base station is installed at low cost without individually establishing a communication link between 61 _{1 to} 61 _m and the radio network controller, and a desired number of radio zones, sectors, and radio channels are formed by a building block system. As a result, it is possible to flexibly install radio base stations having various configurations.

In addition, in such a radio base station, it is possible to smoothly switch between the sector configuration and the omni configuration without requiring a lot of man-hours, and in any of these configurations, unnecessary power consumption is ensured. Avoided.
In this embodiment, an omni configuration is applied. However, for example, antennas 94 _{1 to} 94 ₄ are mounted instead of the antenna 47, and the amplification units 44 ₁ to 44 ₁ are replaced with the common amplification unit 46 and the distribution synthesis unit 45. When 44 ₄ is implemented, it is possible to form a desired number of sectors in a building block format as shown in FIG. 6 (b). A time division multiplex transmission method is applied to the line, but the present invention is not limited to such a transmission method, and the relay between the main line and the relay line can be reliably performed at a desired transmission rate. Any transmission method and communication procedure may be applied. Further, in each of the above-described embodiments, the time division switch 54 is included in the clock timing generation unit 41. If equal to the order of the time slot order in which location is in the application frame structure in the main line, it may not be included such time division switch 54.

In each of the above-described embodiments, the TDMA scheme is applied. However, the present invention is not limited to such a scheme, and any transmission scheme (including a multiple access scheme) of both a digital scheme and an analog scheme. May be applied.
Further, in each of the above-described embodiments, nothing is described about the procedure of channel arrangement and radio channel setting control, but the present invention can be applied regardless of these.

It is a principle block diagram of the 1st and 2nd invention related to this invention. It is a principle block diagram of the 3rd invention related to the present invention. It is a figure which shows 1st and 2nd embodiment of this invention. It is a figure which shows the structure of an audio | voice and control signal input / output part. It is a figure which shows the flame | frame structure applied to this embodiment. It is a figure which shows the structure of the line | wire which connects between several base station transmission / reception apparatuses and a radio network controller. It is a figure which shows 3rd embodiment of this invention. It is a figure which shows the structural example of the conventional wireless base station. It is a figure which shows the structure of the conventional base station transmission / reception apparatus. It is a figure which shows the list of the monitoring control items in a prior art example. It is a figure which shows the other structure of a distribution synthesizer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Transmission / reception means 12 Channel control means 13 Monitoring control means 14 Overall control means 21 Communication control means 31, 32, 61, 92 Base station transmission / reception apparatus 40,100 Voice / control signal input / output part 41 Clock / timing generation part 43 Main control part 44 Amplifying unit 45 Distribution combining unit 46 Common amplifying unit 47, 94 Antenna 50 Balance / unbalance conversion unit (B / U)
51 Synchronous control unit (SYNC)
52 Elastic Memory (ES)
53 Multiplexer (MUX)
54,101 Time division switch 55 Unbalance / balance conversion unit (U / B)
91 Communication link 92 Base station transceiver 93 Common amplifier 95 Monitoring controller 96 Rectifier 97 Battery 98 Door 99 Air conditioner 102 Radio controller 103 Transmitter / receiver 104 Synthesizer 105 Distributor 106 Interface unit 107 Control bus 108 Main controller 109 System Data storage unit 110 Monitoring control unit 111 Main memory

Claims (1)

A plurality of transmission / reception means for individually applying a plurality of radio frequencies assigned to the own station to form a radio zone, and transmitting transmission information to each other in a wireless manner opposite to mobile stations located in these radio zones;
Channel control means for performing radio channel setting control opposite to the mobile station via the plurality of transmission / reception means based on a command given via the communication link by a radio network controller connected via the communication link When,
Monitoring control means for monitoring operating states of the plurality of transmission / reception means and the channel control means, and outputting a result of the monitoring;
In a base station transmission / reception apparatus comprising: a plurality of transmission / reception means, an overall control means for maintaining the operating rate by supervising the channel control means and the monitoring control means,
The number n of the plurality of transmission / reception means is:
Among the maximum value of the number of sectors when the radio zone constitutes a plurality of sectors, and the maximum value of the number of radio frequencies that can be assigned to the radio zone when the radio zone constitutes a single radio zone. Is set to a large value,
The base station transmission / reception apparatus, wherein the channel control means, the monitoring control means, and the overall control means are merged as a single control means.

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