JP3813242B2 - Wireless base station system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  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. Wireless base station system that forms a wireless transmission path with a mobile stationMuAbout.
[0002]
[Prior art]
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.
[0003]
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.
[0004]
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 amplifier 93, and the antenna terminals of the common amplifier 93 are one or more antennas 94.₁~ 94_NIs connected to the power feed end. 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.
[0005]
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 corresponding to a plurality of radio frequencies are individually provided corresponding to these radio frequencies.₁~ 102_nVia the transmission / reception unit 103₁~ 103_nConnected to the modem terminal. Transmission / reception unit 103₁~ 103_nAre divided for each predetermined combination, and are respectively combined.₁~ 104_NConnected to the inputs of these transceivers 103₁~ 103_nAre input to the distributor 105 for each similar combination.₁~ 105_NThe corresponding output of is connected. Synthesizer 104₁~ 104_NOutput and distributor 105₁ ~ 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 ports described above 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 via the control bus 107.₁~ 102_nConnected to the bus terminal. 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.
[0006]
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.
[0007]
The main control unit 108 also includes a communication link 91 connected via the line terminating device 90 and the voice / control signal input / output unit 100, its interface unit 106, and the radio control unit 102.₁~ 102_nIs 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.
[0008]
In such a radio channel setting control process, the main control unit 108₁~ 102_NAnd the transmitting / receiving unit 103₁~ 103_nSends and receives information related to control and monitoring. In addition, the wireless control unit 102₁~ 102_nRespectively, the wireless control unit 102₁~ 102_nOn the basis of the control procedure performed by₁ ~ 103_n Synthesizer 104₁~ 104_N, Distributor 105₁~ 105_N, Common amplifier 93 and antenna 94₁~ 94_NVia the mobile station, various control information in place of the above-described radio channel setting control is transmitted and received opposite to the mobile station located in the radio zone of the own station. The common amplifying device 93 is connected to the transmitting / receiving unit 103.₁~ 103_nTo Synthesizer 104₁ ~ 104_N By amplifying the transmission waves applied individually through the antenna 94 with a predetermined gain, the antenna 94₁~ 94_NThe position, size and shape of the radio zone to be formed by the local station are determined under the gain and directivity.
[0009]
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”.
[0010]
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 gives binary information indicating whether any item among the items to be monitored is abnormal to the monitoring control device 95. In the following, the processing performed by the monitoring control unit 110 in this way is referred to as “monitoring control inside the base station transmission / reception apparatus”.
[0011]
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, the process performed by the main control unit 108 in this way is referred to as “overall control process”.
[0012]
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 termination 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”.
[0013]
By the way, in the above-described conventional example, the combiner 104 is used.₁~ 104_N, Distributor 105₁ ~ 105_N There is an individually corresponding antenna 94₁~ 94_NAre connected via a common amplifying device 93, and these antennas 94 are connected.₁~ 94_NThus, a plurality of sectors (minimal zones) are formed. However, for example, as shown in FIG.₁ ~ 104_N Instead of a single combiner 104 and a distributor 105₁ ~ 105_N Instead, a single antenna 94 connected via a common amplifying device 93 to a single distributor 105 formed by merging them.₁ A common wireless zone may be formed.
[0014]
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.
In the above-described conventional example, the transmission / reception unit 103 is used.₁~ 103_nHowever, for the sake of simplicity, a TDMA scheme in which three time slots are multiplexed is applied.
[0015]
[Problems to be solved by the invention]
However, in the conventional base station transceiver described above, the radio control unit 102₁~ 102_nAnd transceiver 103₁~ 103_nSince the number n of the standard was standardized for the purpose of being installed in all the radio base stations, it was set to a large value “72”.
Therefore, for a base station transmitting / receiving apparatus installed in a small-sized radio base station having 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 apparatus 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.
[0016]
Also, the synthesizer 104₁~ 104_N, Distributor 105₁~ 105_NAs for the cables connected to them, all of them are mounted and laid in advance in order to be adaptable even if they are expanded to “72” which is the maximum number regardless of the number n described above. There were many.
[0017]
However, these synthesizers 104₁~ 104_N, Distributor 105₁~ 105_NSince the cable and the cable are not supposed to be essentially replaceable components, for example, a base station transmission / reception apparatus that has once started operating in a configuration suitable for a sector base station is used as an omni base station. When it is required to switch, a major modification is required, and the process of the modification requires a quick limit because the number of radio channels that can continue operation is limited or the operation is interrupted. It was difficult to respond to.
[0018]
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.
[0019]
  The present invention is a radio base station system that can flexibly adapt to various placement conditions and can form a minimal zone at low cost.MuThe purpose is to provide.
[0020]
[Means for Solving the Problems]
  According to the first aspect of the present invention, “in a radio base station system having a plurality of transmission / reception devices each forming a radio zone, one of the plurality of transmission / reception devices is wirelessly connected via a communication link.Line control stationAnd the one transmission / reception device and another transmission / reception device are connected in cascade, and the other transmission / reception device transmits the wireless signal via the one transmission / reception device according to the cascade connection.Line control stationTransmitting / receiving means for transmitting / receiving transmission information to / fromThe transmission / reception apparatus transmits / receives to / from the radio network controller with transmission information divided into sector units or transmission information based on a frame configuration configured without being divided into sector units.A wireless base station system characterized by.
  FIG. 1 is a principle block diagram of first and second inventions related to the present invention.
[0021]
  firstAccording to the present invention, a plurality of radio frequencies assigned to the own station are individually applied to form a radio zone, and a plurality of transmission / reception units transmit and receive transmission information to and from a mobile station located in the radio zone. Mean 11₁~ 11_nAnd a plurality of transmission / reception means 11 based on a command given through the communication link by the radio network controller connected through the communication link.₁~ 11_nChannel control means 12 for performing radio channel setting control opposite to the mobile station via a plurality of transmission / reception means 11₁~ 11_nAnd monitoring control means 13 for monitoring the operating status of the channel control means 12 and outputting the monitoring results, and transmission / reception means 11₁~ 11_nIn the base station transmission / reception apparatus including the overall control means 14 for maintaining the operation rate by supervising the channel control means 12 and the monitoring control means 13, a plurality of transmission / reception means 11₁~ 11_nThe number n of the maximum number of sectors when a radio zone constitutes a plurality of sectors, and the maximum number of radio frequencies that can be allocated to the radio zone when a single radio zone is constituted. The channel control means 12, the monitoring control means 13, and the overall control means 14 are merged as a single control means.
[0022]
  secondThe invention ofAccording to the first inventionOf the control information and transmission information transmitted and received via a communication link and a relay line extending the same in the base station transmission / reception apparatus, a transmission method applied to the communication link and the relay line and a preset transmission Control information and transmission information whose destination is the local station are extracted and given to a single control means under either one of channel assignment and a pre-selected communication procedure, and the destination is the other station. The communication control means 21 for relaying information and transmission information to the subsequent transmission section is provided.
[0023]
  FIG.Third related to the present inventionIt is a principle block diagram of this invention.
  ThirdThe invention ofConsists of the second invention described aboveThe base station transmitter / receiver 31 and the base station transmitter / receiver 31 via the trunk lineContinuedConnected andConsists of the second inventionSingle or multiple base station transceivers 32₁~ 32_nIt is characterized by comprising.
  firstIn the base station transmitting / receiving apparatus according to the invention, a plurality of radio frequencies assigned to the own station are individually applied to form a radio zone, and transmission information is mutually transmitted facing a mobile station located in these radio zones. A plurality of transmission / reception means 11 for wirelessly transmitting₁~ 11_nThe maximum number of sectors when the radio zone is configured as a plurality of sectors, and the maximum number of radio frequencies that can be assigned when configured as a single radio zone. Is set to a larger value.
[0024]
The transmission / reception means 11 is based on a command given from the radio network controller via the communication link.₁~ 11_nChannel control means 12 for performing wireless channel setting control via these, and these transmission / reception means 11₁~ 11_nIn addition to the monitoring control means 13 that monitors the operation status of the channel control means 12 and outputs the result, these transmission / reception means 11₁~ 11_nThe overall control means 14 that manages the channel control means 12 and the monitoring control means 13 to maintain the operating rate is combined as a single control means.
[0025]
That is, the transmission / reception means 11₁~ 11_nIs 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 11₁~ 11_nAnd a means for performing radio channel setting control and monitoring control of each unit interposed between the communication link and the communication link. 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.
[0026]
  secondIn the base station transmitting / receiving apparatus according to the invention, the communication control means 21 is applied to 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. Control information and transmission information for which the destination is the local station based on one of the determined transmission method and pre-set transmission channel assignment and a pre-selected communication procedure, to a single control means The control information and transmission information whose destination is another station are relayed to the subsequent transmission section.
[0027]
  That is, among the control information and transmission information given from the radio network controller via the communication link,First mentionedIn the same manner as in the present invention, it is given to a single control means for performing radio channel setting control and monitoring control, and a destination whose destination is another station is appropriately relayed to a relay line.
[0028]
  Therefore, a plurality of base station transmission / reception apparatuses according to the present invention are not connected to the radio network controller individually via a communication link, but are connected via the above-described relay line.ContinuedThe number and length of communication links that are connected and should be laid along with the installation of the base station are greatly reduced.
  ThirdIn the radio base station according to the present invention, the base station transceiver 31 is connected to the radio network controller via the communication link, and the base station transceiver 32 is connected.₁~ 32_nIs vertical via a trunk lineContinuedConnected.
[0029]
That is, the base station transceivers 31, 32₁~ 32_nIs installed at a low cost without being connected to a radio network controller via a separate communication link, and a desired number of radio zones, sectors and radio channels are formed by the building block system by these base station transceivers. Thus, it becomes possible to flexibly install radio base stations having various configurations.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
  FIG.First and second of the present inventionIt is a figure which shows embodiment.
  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.
[0031]
The difference between the present embodiment and the conventional example shown in FIG.₁ ~ 103_n And wireless control unit 102₁~ 102_nIs set to “4”, the voice / control signal input / output unit 40 is provided instead of the voice / control signal input / output unit 100, and the clock / timing generation unit is replaced with the time division switch 101. 41, a main control unit 43 is provided instead of the interface unit 106, the main control unit 108, the monitoring control unit 110, and the main memory 111, and the transmission / reception unit 103 is provided.₁~ 103_nThe antenna terminal of the amplifying unit 44₁~ 44_FourThrough the antenna 94₁~ 94_FourConnected to the feeding end of the synthesizer 104₁~ 104_NAnd distributor 105₁~ 105_NIt is in the point which was constituted without being provided.
[0032]
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) 50₁ Via the synchronization control unit (SYNC) 51₁ And elastic memory 52₁ Connected to the input. Elastic memory 52₁ Output and multiplexing unit (MUX) 53₁ Is connected to the first port of the time division switch 54 built in the clock / timing generator 41, and the multiplexer 53₁ Output is unbalanced / balanced conversion unit (B / U) 55₁ To the upstream link of the main line.
[0033]
On the other hand, the second port of the time division switch 54 is an elastic memory 52.₂ Output and multiplexing unit 53₂ The multiplexer 53 is connected to the input of the₂ Output of the unbalance / balance conversion unit 55₂ Is connected to the downlink of the relay line that extends the transmission section of the main line described above. Further, the upstream link of the trunk line is connected to the balanced / unbalanced conversion unit 50.₂ Via the synchronization control unit 51₂ And elastic memory 52₂ Connected to the input.
[0034]
The correspondence between the present invention and the block diagram shown in FIG.₁~ 103_Four, Amplification unit 44₁~ 44_FourAnd antenna 94₁~ 94_FourIs a transmission / reception means 11₁~ 11_nCorresponding to the wireless control unit 102₁~ 102_FourThe 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 unit 12, and the main control unit 43 and the main memory 111 correspond to the monitoring control unit 13. Corresponding to the overall control means 14, the voice / control signal input / output unit 40 corresponds to the communication control means 21.
[0035]
  Hereinafter, referring to FIG. 3 and FIG.The first of the present inventionThe operation of the embodiment will be described.
  As shown in FIG. 5 (a), the main line includes a plurality of radio channels TCH to be used for a call on a sector basis.₁, TCH₂Control information D to be transmitted and received opposite to the radio network controller₁, D₂, ... and multiple time lots TS assigned individually₁, TS₂A time division multiplex transmission scheme having a frame structure in which. It is assumed that the transmission rate of the transmission channel formed by individual time slots is 64 kbps for simplicity.
[0036]
In the voice / control signal input / output unit 40, the synchronization control unit 51₁ The balanced / unbalanced conversion unit 50 converts transmission information provided via the main line based on such a time division multiplex transmission system.₁ And frame synchronization and bit synchronization for these transmission information are established. 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 Wireless control unit 102 via the communication path set by 43₁~ 102_FourIs given to either.
[0037]
On the contrary, the time division switch 54 is connected to these radio control units 102.₁~ 102_FourAs for the transmission information given from, the multiplexing unit 53 via the above-described speech path.₁ To give. Multiplexer 53₁ Multiplexes the transmission information thus given as a frame adapted to the time division multiplex transmission system described above, and the frame is unbalanced / balanced conversion unit 55.₁ To the main line. 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. The transmission / reception unit 103₁~ 103_FourBetween the communication control station 102 and the radio network controller is a full-duplex transmission path used for transmitting a call signal.₁~ 102_FourAnd the voice / control signal input / output unit 40.
[0038]
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, monitoring performed by the monitoring control device 95 Perform control processing in parallel.
[0039]
However, the wireless control unit 102₁~ 102_nAnd transceiver 103₁~ 103_nSince the maximum value of the number n is set to “4”, which is significantly smaller than “72” in the conventional example, the size of the hardware and information to be subjected to all the above-described processes is significantly 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.
[0040]
Further, in the conventional example, the common amplifying device 93 housed in a rack separate from the base station transmitting / receiving device 92 has₁~ 103_FourIt is housed in a common rack.
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
[0041]
  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.
  Hereinafter, referring to FIGS.Second of the present inventionThe operation of the embodiment will be described.
[0042]
In the voice / control signal input / output unit 40, the time division switch 54 includes a balanced / unbalanced converting unit 50.₁ And elastic memory 52₁ Among the transmission information received from the main line via the transmission line, the transmission information obtained via the time lot assigned in advance to other stations₂ To give. Multiplexer 53₂ Multiplexes these pieces of transmission information to form a frame in accordance with the frame structure described above, and relays the frame as shown by the dotted line in FIG. Send to the line.
[0043]
Also, with respect to transmission information received under the same time division multiplex transmission system via such a relay line, the balanced / unbalanced conversion unit 50 is used.₂ Via elastic memory 52₂ And synchronization control unit 51₂ Given to. Synchronization control unit 51₂ Is the synchronization control unit 51 described above.₁ The synchronization is established in the same manner as the elastic memory 52₂ Accumulates individual transmission information under the synchronization. In this way, the time division switch 54 is connected to the elastic memory 52.₂ The transmission information stored in the multiplex unit 53₁ To give.
[0044]
On the other hand, the radio base station adjacent via the trunk line connects the balanced / unbalanced conversion unit 50 to the trunk line.₁ And unbalance / balance conversion section 55₁ Are connected to the other, and the unbalanced / balanced conversion unit 55 is connected to a trunk line formed between other adjacent radio base stations.₂ And balanced / unbalanced converter 50₂ Are connected to each other, and the same operation is performed in each part.
[0045]
  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.Third of the present inventionIt is a figure which shows embodiment.
  In the figure, base station transceiver 61₁ Is connected to a communication link 91 via a line terminating device 90, and its base station transceiver 61₁ In the base station transceiver 61₂ ~ 61_m In turn through trunk linesContinuedConnected. Base station transceiver 61₁~ 61_mA rectifier 96 and a battery 97 are connected in parallel to the power supply terminals of the base station transceiver unit 61.₁~ 61_mThe rectifier 96 and the battery 97 are both installed in a common station.
[0046]
  Also, base station transceiver 61₁~ 61_mWhenThe first and second mentionedThe difference in configuration from the embodiment is that the vertical direction as shown by the dotted line in FIG.ContinuedThe connected distribution / combination unit 45, common amplification unit 46, and antenna 47 are connected to the amplification unit 44.₁~ 44_FourAnd antenna 94₁~ 94_FourIs provided instead of the transmission / reception unit 103.₁~ 103_FourThe antenna terminal is connected to the corresponding terminal of the distribution / combination unit 45.
[0047]
  Note that the correspondence between the present embodiment and the block diagram shown in FIG.₁ Corresponds to the base station transceiver 31 and 61₂~ 61_mIs 32₁~ 32_nCorresponding to
  Hereinafter, referring to FIGS.ThirdThe operation of the embodiment will be described.
[0048]
Base station transceiver 61₁~ 61_mThen, the common amplifying unit 46 and the distribution / combining unit 45 are connected to the amplifying unit 44.₁~ 44_FourThese amplifying units 44 are mounted at the mounting position of₁~ 44_FourAnd the antenna 47 has 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.
[0049]
  Further, a multiplexing unit 53 included in the voice / control signal input / output unit 40.₁, 53₂The time division switch 54 included in the clock / timing generation unit 41 performs a relay process related to the main line and the relay line by adapting to such a frame configuration.
  Thus, according to this embodiment, the same stationConfigure the second embodiment described aboveMultiple base station transceivers 61₁~ 61_mIs installed, these base station transceivers 61₁~ 61_mA wireless base station can be installed at low cost without separately establishing a communication link between the wireless network controller and the wireless network controller, and a desired number of wireless zones, sectors and wireless channels are secured by the building block method. It is possible to flexibly install a radio base station having a configuration.
[0050]
Also, 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. For example, instead of the antenna 47, the antenna 94 is used.₁~ 94_FourIn place of the common amplification unit 46 and the distribution / synthesis unit 45.₁~ 44_Four6 is implemented, a desired number of sectors can be formed in a building block format as shown in FIG. 6B.
Further, in each of the above-described embodiments, the time division multiplex transmission system is applied to the main line and the relay line. However, the present invention is not limited to such a transmission system, and between the main line and the relay line. Any transmission method and communication procedure may be applied as long as the relay is reliably performed at a desired transmission rate.
Further, in each of the above-described embodiments, the time division switch 54 is included in the clock / timing generation unit 41. For example, the order of time slots in the frame configuration in which the order in which radio channels are arranged is applied to the main line is used. , Such a time division switch 54 may not be included.
[0051]
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 is available. 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.
[0052]
【The invention's effect】
  BookIn the 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 configuration of the hardware is simplified and the scale is reduced.
  BookIn the invention, the number and length of communication links to be laid down with the installation of a plurality of base stations are greatly reduced.
[0053]
  BookIn the invention, radio base stations having various configurations can be 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 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.
[Brief description of the drawings]
[Figure 1]First and second related to the present inventionIt is a principle block diagram of this invention.
[Figure 2]Third related to the present inventionIt is a principle block diagram of this invention.
[Fig. 3]The figure which shows 1st and 2nd embodiment of this inventionIt is.
FIG. 4 is a diagram illustrating a configuration of an audio / control signal input / output unit.
FIG. 5 is a diagram illustrating a frame configuration applied to the present embodiment.
FIG. 6 is a diagram showing a configuration of a line connecting between a plurality of base station transmission / reception apparatuses and a radio network controller.
[Fig. 7]Third of the present inventionIt is a figure which shows embodiment.
FIG. 8 is a diagram illustrating a configuration example of a conventional radio base station.
FIG. 9 is a diagram illustrating a configuration of a conventional base station transceiver device.
FIG. 10 is a diagram showing a list of monitoring control items in a conventional example.
FIG. 11 is a diagram showing another configuration of the distribution synthesizer.
[Explanation of symbols]
11 Transmission / reception means
12 channel control means
13 Monitoring control means
14 General control means
21 Communication control means
31, 32, 61, 92 Base station transceiver
40,100 Voice / control signal input / output section
41 Clock timing generator
43 Main control unit
44 Amplifier
45 Distribution and synthesis unit
46 Common amplifier
47,94 antenna
50 Balance / unbalance converter (B / U)
51 Synchronous control unit (SYNC)
52 Elastic Memory (ES)
53 Multiplexer (MUX)
54,101 Time division switch
55 Unbalance / balance conversion section (U / B)
91 Communication link
92 Base station transceiver
93 Common amplifier
95 Monitoring and control equipment
96 Rectifier
97 battery
98 door
99 Air conditioner
102 Radio control unit
103 transceiver
104 Synthesizer
105 distributor
106 Interface section
107 Control bus
108 Main control unit
109 System data storage
110 Monitoring control unit
111 Main memory

Claims (1)

In a radio base station system having a plurality of transmission / reception devices each forming a radio zone,
One transmission / reception device among the plurality of transmission / reception devices is connected to a radio network controller via a communication link, and the one transmission / reception device and another transmission / reception device are connected in cascade,
The other transmission / reception device includes transmission / reception means for transmitting / receiving transmission information to / from the radio network controller via the one transmission / reception device according to the cascade connection ,
The transmission / reception apparatus transmits / receives data to / from the radio network controller with transmission information divided in units of sectors or transmission information based on a frame configuration configured without being divided into units of sectors.
The radio base station system comprising a call.

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