JP2016116070A - Device connection method, communication system, and base station device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve to directly connect a new device and an old device installed at separate positions.SOLUTION: The communication system is a communication system for mutually communicating by directly connecting devices. The communication system includes: at least one functional block; and an inter-device resource sharing switch for sharing a resource by connecting between other devices. Into a connection path between devices, a connection changeover switch that changes over from other device connected before to other device added later is inserted.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a device connection method, a communication system, and a base station device, and more particularly to a device connection method, a communication system, and a device suitable for newly adding a device to a device having a limited connection between adjacent devices. And a base station apparatus.

  In recent years, an architecture called C-RAN (Cloud-Radio Access Network) has been proposed in which wireless communication processing units such as baseband signal processing for a plurality of base stations are integrated into one base station apparatus. The C-RAN architecture relates to future high density installations of small cell base stations to accommodate traffic surges.

  The concept of the C-RAN architecture is that the processing resources of the centralized wireless communication processing unit can be efficiently shared among a plurality of base stations, thereby reducing the cost and power consumption of the base station device. Technology. That is, since the wireless communication processing is integrated in one base station device, and ideally, it can be handled by implementing processing resources in accordance with the peak in the form of averaging traffic for all areas. Small scale and low cost are possible. In addition, this technology is a technology that can dramatically reduce the number of processing resources to be operated at the time of low traffic due to resource sharing, and can also reduce power consumption.

  Patent Document 1 relates to a base station apparatus having a plurality of baseband cards, and a method for controlling the number of operating baseband cards is proposed as a method for sharing resources. FIG. 12 is a block diagram of a base station apparatus proposed in Patent Document 1. This method includes a resource measurement unit 722 that measures resource usage of a plurality of baseband cards, and a card control unit 726 that performs resource accommodation switching of each baseband card based on the resource usage. . When the number of baseband card operations in the baseband processing unit 706 exceeds the expected minimum number of operations, the number of operating baseband cards is minimized by changing the resource accommodation to reduce power consumption. .

  However, since traffic tends to increase with time, in the future, a plurality of base station devices disclosed in Patent Document 1 will be introduced, and a new base will be provided each time traffic demand increases. It is possible to add station devices. When a plurality of base station apparatuses are introduced in this way to cope with an increase in traffic, it is preferable that resources be shared between base station apparatuses. However, as the number of devices increases, it is difficult to share resources by tightly coupling the entire device including newly added devices. For this reason, for example, it is more practical to connect all devices linearly or in a mesh form, and add new devices to the end points of linear connection or mesh connection, and share resources only between adjacent devices. Is.

  In a method of realizing resource sharing by connection limited between adjacent devices, it is considered to improve overall power efficiency by preferentially allocating processing to devices with high power efficiency. In this case, if the new device that is added later has higher power efficiency than the old device that is already installed, the old device that is already installed and has low power efficiency is used to improve the overall power efficiency. And a new device to be newly added are required to be connected. However, it is not always possible to install a new device with high power efficiency at a position adjacent to an old device with low power efficiency.

  The following three connection methods can be considered as connection methods corresponding to the case where a new device with high power efficiency cannot be installed at a position adjacent to an old device with low power efficiency. The first connection method is to install a new device by moving another old device that is installed adjacent to the old device with low power efficiency and connected to the device to another location. There is a way to prepare. As a second connection method, there is a method of leaving a place for adding a device in advance in consideration of a new device being installed later when the device is installed. As a third connection method, a new device is installed at a position away from the old device with low power efficiency, and a long-distance connection wiring is laid between the old device and the new device to connect them. is there.

JP 2011-101104 A

  Consider a case in which when a new device having higher power efficiency than the old device is introduced, there is a restriction that the new device cannot be installed at a position adjacent to the old device having lower power efficiency. In this case, in order to directly connect the new device and the old device, the following method can be considered. For example, there is a method in which an old device installed next to an old device to be directly connected is moved to another location, and the device is installed again so that the new device and the old device are adjacent to each other. Alternatively, a place for adding a new device is prepared in advance. Alternatively, a new apparatus is installed in a place away from the old apparatus with low power efficiency, and a long-distance connection wiring is laid from the place where the new apparatus is installed to the place where the old apparatus is installed.

  However, in order to replace the device including the old device, it is necessary to temporarily stop the power supply of the old device to stop resource sharing, or to move the old device and install the new device There is a problem that work to ensure the occurrence occurs. On the other hand, if the installation location for the new device has been reserved, there is a problem that the reserved space for the new device becomes excessive until the new device is additionally installed. is there. In addition, when an installation location for a new device is reserved and a change occurs in the introduction plan of the device, there is a problem that the location prepared for the new device is wasted.

  Also, install a new device at a location away from the old device with low power efficiency, and use a method of laying long-distance connection wiring that reaches the location where the old device is installed from the location where the new device is installed. If so, there are the following problems. That is, since the existing connection wiring that has been used for the connection between the old devices becomes an unused wiring, there is a problem that the connection wiring is removed from the connection path between the old devices and discarded.

(Object of invention)
The objective of this invention is providing the apparatus connection method, communication system, and base station apparatus which implement | achieve the direct connection of the new apparatus installed in the distant position, and an old apparatus.

In order to achieve the above object, a device connection method according to the present invention is a connection method between devices that are directly connected and communicate with each other,
Connecting the first and second devices by inserting a first connection changeover switch into the connection path between the devices,
The first connection selector switch has at least first to fourth contacts, connects the first contact and the third contact, connects the second contact and the fourth contact, and the first contact. It is possible to connect between the contacts by switching to the intersection mode in which the fourth contact is connected and the second contact is connected to the third contact, and the connection path is connected between the first and third contacts, The second and fourth contacts, the first and fourth contacts, or the second and third contacts are connected,
A third device is connected to an unused contact among the first to fourth contacts of the first connection changeover switch,
The first device is connected from the second device to the third device by switching the mode of the first connection changeover switch from the parallel mode to the cross mode or from the cross mode to the parallel mode. Switch.

The communication system according to the present invention is a communication system in which devices are directly connected to communicate with each other, and an inter-device resource sharing switch that connects at least one functional block and another device to share resources. And
A connection changeover switch for switching the connection from another device connected earlier to another device added later is inserted into the connection path between the devices.

The base station apparatus according to the present invention includes a radio unit, a baseband processing unit, and an inter-device resource sharing switch that connects other base station devices to be connected to perform resource sharing.
A connection changeover switch for switching the connection from another base station apparatus connected earlier to another base station apparatus added later is inserted into the connection path between the base station apparatuses.

  The present invention can realize a direct connection between a new apparatus installed at a distant position and an old apparatus. As a result, it is not necessary to secure a place for installing the new apparatus adjacent to the old apparatus by replacing the old apparatus, and it is also necessary to prepare a place for installing the new apparatus in advance. No. Furthermore, it can be utilized as an extension wiring without removing the connection wiring that has been used to connect the old devices.

It is a block diagram which shows the structure of the base station apparatus to which the apparatus connection method of embodiment of the high-order concept of this invention is applied. It is a block diagram which shows the structure of the base station apparatus to which the apparatus connection method of 1st Embodiment is applied. (A) is a block diagram which shows the connection changeover switch used for 1st Embodiment, (b) is a figure which shows the truth table of a connection changeover switch. It is a flowchart which shows the apparatus connection procedure of 1st Embodiment. It is a flowchart which shows the apparatus connection procedure of 1st Embodiment following FIG. 4A. It is a block diagram which shows the first connection structure of 1st Embodiment. It is a block diagram which shows the connection structure at the time of adding the new apparatus of 1st Embodiment. It is a block diagram which shows the connection structure at the time of adding the new apparatus of 1st Embodiment. It is a block diagram which shows the structure of the base station apparatus to which the apparatus connection method of 2nd Embodiment is applied. It is a flowchart which shows the apparatus connection procedure of 2nd Embodiment. It is a flowchart which shows the apparatus connection procedure of 2nd Embodiment following FIG. 9A. It is a block diagram which shows the first connection structure of 2nd Embodiment. It is a block diagram which shows the connection structure at the time of adding the new apparatus of 2nd Embodiment. It is a block diagram of the base station apparatus proposed by patent document 1. FIG.

  Preferred embodiments of the present invention will be described in detail with reference to the drawings.

  The apparatus connection method of the present invention is applied to, for example, a base station apparatus including a radio unit and a baseband processing unit. FIG. 1 is a block diagram illustrating a configuration of a base station apparatus 10 to which a device connection method according to an embodiment of the superordinate concept of the present invention is applied. In this case, an inter-device resource sharing switch 13 is provided between the radio unit 11 and the baseband processing unit 12 in the base station device 10. The inter-device resource sharing switch 13 is used to connect the base station devices to share resources. The inter-device resource sharing switch 13 connects a connection between the radio unit 11 and the baseband unit 12 in the base station device 10 to a baseband processing unit in another base station device connected to the base station device. It has the feature that it can be switched to connection. Further, connection switching for switching the connection from another base station device connected earlier to another base station device added later to the inter-device resource sharing switch 13 and the connection paths 14 and 15 between the base station devices. Switches 21 and 22 are provided.

  The apparatus connection method of the present invention is to perform resource sharing by connecting base station apparatuses using the inter-apparatus resource sharing switch 13, for example. In this case, the base station device that is the resource sharing partner is switched from “parallel” to “intersection” by switching the connection changeover switches 21 and 22 added on the connection path between the base station devices. It changes to the added base station apparatus with high power efficiency, It is characterized by the above-mentioned.

  According to the apparatus connection method of the present invention, it is not necessary to secure a place for replacing the old apparatus and installing the new apparatus at a position adjacent to the old apparatus. It is not necessary to prepare a place for installing a new device in advance. In addition, it is possible to provide a direct connection between a new device installed at a distant position and the old device without removing the wiring used to connect the existing old devices. In the following, the invention will be described with reference to more detailed embodiments.

  In the first embodiment, a device connection method including an inter-device resource sharing switch that realizes resource sharing between two adjacent base station devices, and a connection changeover switch provided on a connection wiring between the base stations The configuration of will be described. As a result, the new device installed in the linearly expanded area is directly connected to the first installed device.

  In the second embodiment, a device connection including an inter-device resource sharing switch that realizes resource sharing with N adjacent base station devices, and a connection changeover switch provided on a connection wiring between the base stations. The configuration of the method will be described. As a result, the new device installed in the area expanded in N / 2 dimensions is directly connected to the device installed first. The second embodiment corresponds to an implementation method when the number of connections between devices is expanded to N.

[First Embodiment]
First, a device connection method according to the first embodiment of the present invention and a base station device to which this device connection method is applied will be described. FIG. 2 is a block diagram illustrating a configuration of a base station apparatus to which the apparatus connection method according to the first embodiment of the present invention is applied. FIG. 3A is a block diagram showing the connection changeover switch used in the first embodiment, and FIG. 3B is a diagram showing a truth table of the connection changeover switch. FIG. 5 is a block diagram illustrating an initial connection configuration according to the first embodiment. FIG. 6 is a block diagram illustrating a connection configuration when the new apparatus according to the first embodiment is added. FIG. 7 is a block diagram illustrating a connection configuration when a new device is further added according to the first embodiment.

(Description of configuration)
The apparatus connection method according to the first embodiment of the present invention is applied to, for example, connection between base station apparatuses when resources are shared among a plurality of base station apparatuses. The apparatus connection method according to the present embodiment is applied to the base station apparatus 100 including the radio unit 610 and the baseband processing unit 606. Radio section 610 includes cell # 1, cell # 2 to cell #m. The baseband processing unit 606 includes a plurality of baseband cards. One functional block of the communication system of the present invention corresponds to the radio unit 610 or the baseband processing unit 606, for example. As shown in FIG. 2, the inter-device resource sharing switch 200 is provided between the radio unit 610 and the baseband unit 606 in the base station device 600.

  The base station apparatus 100 further includes a line processing unit 602, a call processing unit 608, a resource measurement unit 622, a determination unit 624, a card control unit 626, a switch 632 (SW632), and a monitoring control unit 604. . The line processing unit 602 is connected to a higher-level device outside the base station device 100 and performs termination processing for data transmitted and received between the devices. The call processing unit 608 includes a resource management unit, and sets hardware resources for communication with the mobile station in the baseband processing unit 606. The resource measurement unit 622 measures the resource usage of each baseband card of the baseband processing unit 606. The determination unit 624 determines whether or not the resource accommodation can be changed. The card control unit 626 performs resource accommodation change control and power supply control. The card control unit 626 changes the resource accommodation of each baseband card based on the resource usage measured by the resource measurement unit 622. The switch 632 performs power supply or power supply stop from the primary power supply to each baseband card of the baseband processing unit 606 based on an instruction from the monitoring control unit 604 or the card control unit 626. The monitoring control unit 604 performs monitoring control for each processing unit in the base station apparatus 100.

  Base station apparatus 100 is connected to the mobile station via an antenna (ANT) connected to each cell of radio section 610. When the number of baseband card operations in the baseband processing unit 606 exceeds the expected minimum number of operations, the base station apparatus 100 minimizes the number of baseband cards that operate by performing resource accommodation and reduces power consumption. Realize reduction.

  The inter-device resource sharing switch 200 has two connection ends 201 and 202 that perform bi-directional data communication for connecting to linearly adjacent base station devices. As illustrated in FIG. 2, the connection ends 201 and 202 of the inter-device resource sharing switch 200 are connected to the connection changeover switches 101 and 102 outside the base station device 100. In other words, the connection changeover switch 101 is inserted in the connection path between the connection end 201 of the inter-device resource sharing switch 200 and another base station device, and the connection between the connection end 202 of the inter-device resource sharing switch 200 and the other base station device. A connection changeover switch 102 is inserted in the path.

  When performing processing on the uplink side of wireless communication in the base station device on the operating side by resource accommodation switching, the inter-device resource sharing switch 200 receives the uplink signal output from the wireless unit 610 of the base station device 100, The data is output to the baseband processing unit 606. Alternatively, the inter-device resource sharing switch 200 outputs an uplink signal output from the radio unit 610 of the base station apparatus connected adjacently and input via the connection ends 201 and 202 to the baseband processing unit 606. To do.

  Similarly, when processing on the downlink side of radio communication is performed, the inter-device resource sharing switch 200 uses the downlink signal output from the baseband processing unit 606 of the base station device 100 as the radio unit 610 of the base station device 100. Output to. Along with this output, the inter-device resource sharing switch 200 outputs to the radio unit 610 of the adjacent base station device via the connection ends 201 and 202.

  When processing on the uplink side of wireless communication is performed in the base station apparatus on the side to be stopped by resource accommodation switching, one of the connection ends 201 and 202 is selected. Then, the inter-device resource sharing switch 200 processes the uplink signal output from the radio unit 610 of the base station device 100 via the selected connection end and the baseband processing of the base station device connected adjacently. To the unit 606.

  Similarly, when processing on the downlink side of wireless communication is performed, the inter-device resource sharing switch 200 uses the downlink signal output from the baseband processing unit 606 of the base station device connected adjacent thereto as the base station device. To 100 wireless units 610. Here, the downlink signal is input via the connection ends 201 and 202.

  The connection changeover switches 101 and 102 will be described in more detail. As shown in FIG. 3A, the connection changeover switches 101 and 102 have four connection ends 01, 02, 03, and 04 that perform bidirectional data communication. For example, the four connection ends 01, 02, 03, 04 of the connection changeover switches 101, 102 correspond to the first contact, the second contact, the third contact, and the fourth contact, respectively. The connection changeover switches 101 and 102 include two operation modes of “parallel” and “intersection” shown in the truth table of FIG. 3B for the respective connection ends 01, 02, 03 and 04.

  In the “parallel” mode of the connection changeover switches 101 and 102, the connection end 01 and the connection end 03 are connected, and the connection end 02 and the connection end 04 are connected. In the “intersection” mode of the connection changeover switches 101 and 102, the connection end 01 and the connection end 04 are connected, and the connection end 02 and the connection end 03 are connected.

(Description of operation)
Next, the device connection method according to the first embodiment will be described in detail with reference to FIGS. 4A, 4B, 5 and 6. FIG. FIG. 4A is a flowchart illustrating an example of a connection procedure of the apparatus connection method according to the first embodiment. FIG. 4B is a flowchart illustrating an example of a connection procedure of the apparatus connection method according to the first embodiment, following FIG. 4A.

  FIG. 5 shows a connection when base station apparatuses 110 and 120 are newly added on both sides of base station apparatus 100. As shown in FIG. 4A, a new base station apparatus 110 and a base station apparatus 120 are installed on both sides of the base station apparatus 100, for example (step S1). The connection changeover switches 101 and 102 of the base station apparatus 100 are set to the “intersection” mode (step S2). The connection change-over switches 111 and 122 of the base station apparatus 110 and the base station apparatus 120 are set to the “parallel” mode (step S3). And the base station apparatus 100, the base station apparatus 110, and the base station apparatus 120 are each connected (step S4). Here, the base station apparatus 100 is connected to the base station apparatus 120 and the base station apparatus 110 via the connection changeover switches 101 and 102 in the “intersection” mode.

  FIG. 6 shows a connection when a new base station apparatus 130 is added by expanding a place for installing the base station apparatus next to the base station apparatus 110 of FIG. For example, a new base station apparatus 130 is installed on the right side of the base station apparatus 110 (step S5). The connection changeover switch 111 of the base station apparatus 110 that is in the “parallel” mode is set to the “intersection” mode (step S6). The connection changeover switch 131 of the base station apparatus 130 is set to the “parallel” mode (step S7). Further, the base station apparatus 130 is connected to each empty terminal of the connection changeover switch 111 via the connection changeover switches 131 and 132 (step S8).

  With this setting, the base station apparatus 130 is directly connected to the base station apparatus 100 installed at a remote position via the connection changeover switch 111. More specifically, the base station apparatus 130 is directly connected to the first installed base station apparatus 100 via the connection switching switch 111 in the “intersection” mode (step S9). At this time, the wiring between the connection changeover switches 102 and 111 does not need to be changed.

  FIG. 7 shows a connection when a new base station apparatus 140 is added by further expanding the place for installing the base station apparatus next to the base station apparatus 130. For example, a new base station apparatus 140 is installed on the right side of the base station apparatus 130 (step S10). The connection changeover switch 131 of the base station apparatus 130 in the “parallel” mode is set to the “intersection” mode (step S11). The connection changeover switch 141 of the base station apparatus 140 is set to the “parallel” mode (step S12). Furthermore, the base station apparatus 140 is connected to each empty terminal of the connection changeover switch 131 via the connection changeover switches 141 and 142 (step S13).

  With this setting, the base station apparatus 140 is directly connected to the base station apparatus 100 installed at a remote location via the connection changeover switches 131 and 111. More specifically, the base station apparatus 140 is directly connected to the first installed base station apparatus 100 via the connection switches 131 and 111 in the “intersection” mode (step S14). The wiring used between the existing base station apparatuses, for example, the wiring connecting the connection changeover switches 131 and 111 is an extension wiring. At this time, the wiring between the connection changeover switches 101 and 111 and the wiring between the connection changeover switches 111 and 131 need not be changed. In this way, installation and connection of a new base station device is completed.

  In FIG. 7, direct connection between the base station apparatuses 100 and 140 is realized by connecting the connection switch 131 between the base station apparatus 140 and the base station apparatus 130. By connecting the connection changeover switch 132 between the base station apparatus 140 and the base station apparatus 130 in the same manner, it is also possible to realize direct connection between the base station apparatus 140 and the base station apparatus 110. In this case, the base station apparatus 140 may be connected to the empty terminal of the connection changeover switch 132 via the connection changeover switches 141 and 142, respectively.

  As described above, the position of the connection changeover switch for connecting to the base station apparatus 100 that is connected first directly connects the new apparatus installed in the expanded place and the base station apparatus 100 installed first. It may be arranged on the side of the connection switch attached to the new device each time. Even when a new device is added to the expanded location, it is installed first at a remote location by simply connecting to the connection switch of the device installed at a location relatively close to the expanded location. It is possible to connect directly to the old device.

(Explanation of effect)
As described above, in the apparatus connection method according to the first embodiment of the present invention, by introducing a changeover switch for connection between base station apparatuses, the wiring used between the existing base station apparatuses can be extended. It can be reused as a wiring. Thereby, the direct connection of the new base station apparatus installed in the newly extended position and the first installed base station apparatus is realizable. At that time, it is not necessary to change the wiring between the connection changeover switches.

  The apparatus connection method of the first embodiment having such a feature does not require securing a place for replacing the old apparatus and installing the new apparatus at a position adjacent to the old apparatus. Furthermore, it is not necessary to prepare a place for installing a new device in advance. In addition, it is possible to realize a direct connection between a new device installed at a distant position and an old device without removing the wiring used for the connection between existing devices.

[Second Embodiment]
Next, a device connection method according to the second embodiment of the present invention and a base station device to which this device connection method is applied will be described. FIG. 8 is a block diagram illustrating a configuration of a base station apparatus to which the apparatus connection method of the second embodiment is applied. FIG. 9A and FIG. 9B are flowcharts showing the apparatus connection procedure of the second embodiment. FIG. 10 is a block diagram illustrating an initial connection configuration according to the second embodiment. FIG. 11 is a block diagram illustrating a connection configuration when a new apparatus according to the second embodiment is added.

(Description of configuration)
Next, a device connection method according to the second embodiment of the present invention will be described in detail with reference to FIG. The apparatus connection method according to the second embodiment of the present invention is applied to connection between base station apparatuses when resources are shared among a plurality of base station apparatuses, as in the first embodiment. The apparatus connection method according to the present embodiment is applied to a base station apparatus 300 including a radio unit 610 and a baseband processing unit 606. Similar to the first embodiment, the radio unit 610 includes cell # 1, cell # 2 to cell #m. Similar to the first embodiment, the baseband processing unit 606 includes a plurality of baseband cards. One functional block of the communication system of the present invention corresponds to the radio unit 610 or the baseband processing unit 606, for example. As illustrated in FIG. 8, the inter-device resource sharing switch 400 is provided between the radio unit 610 and the baseband unit 606 in the base station device 300.

  When n = N / 2, the inter-device resource sharing switch 400 according to the present embodiment performs N data communication in both directions for connecting to base stations adjacent in the n dimension. It has ~ 40N. N connection change-over switches 301 and 302 to 30N are inserted in connection paths between the connection ends 401 and 402 to 40N of the inter-device resource sharing switch 400 and other base station devices, respectively.

  Similar to the first embodiment, the base station apparatus 300 of this embodiment includes a line processing unit 602, a call processing unit 608, a resource measurement unit 622, a determination unit 624, a card control unit 626, and a switch 632. (SW632) and a monitoring control unit 604. Base station apparatus 300 is connected to the mobile station via an antenna (ANT) connected to each cell of radio section 610.

  In the base station apparatus on the operating side by performing resource accommodation, when processing on the uplink side of wireless communication is performed, the inter-device resource sharing switch 400 receives an uplink signal output from the radio unit 610 of the base station apparatus 300. The data is output to the baseband processing unit 606. Alternatively, the inter-device resource sharing switch 400 outputs, to the baseband processing unit 606, an uplink signal output from the radio unit 610 of the base station connected adjacently and input via the connection terminals 401 to 40N. To do.

  Similarly, when processing on the downlink side of radio communication is performed, the inter-device resource sharing switch 400 uses the downlink signal output from the baseband processing unit 606 of the base station device 300 as the radio unit 610 of the base station device 300. Output to. Along with the output to the radio unit 610, a downlink signal is output to the radio unit 610 of the base station apparatus connected adjacently via the connection terminals 401 to 40N.

  In the base station apparatus on the side to be stopped due to resource accommodation switching, when processing on the uplink side of radio communication is performed, the inter-device resource sharing switch 400 receives the uplink signal output from the radio unit 610 of the base station apparatus 300. Any one of the connection ends 401 to 40N is selected. And it outputs to the baseband process part 606 of the base station apparatus connected adjacently via the selected connection end.

  Similarly, when processing on the downlink side of wireless communication is performed, the following is performed. The inter-device resource sharing switch 400 outputs a downlink signal output from the baseband processing unit 606 of the base station connected adjacently and input via the connection terminals 401 to 40N to the radio unit of the base station device 300. Output to 610.

  Similar to the connection change-over switches 101 and 102 of the first embodiment, the connection change-over switches 301 to 30N have four connection ends that perform bidirectional data communication, and each connection end similarly to the first embodiment. On the other hand, two operation modes of “parallel” and “intersection” shown in FIG. 2 are included. The connection terminals 401 to 40N of the inter-device resource sharing switch 400 are connected to the connection changeover switches 301 to 30N outside the base station device 300.

  Thus, the number of connection ends of the two base station apparatuses in the first embodiment is N in the second embodiment.

(Description of operation)
Next, a device connection method according to the second embodiment will be described in detail with reference to FIGS. 9A, 9B, 10 and 11. FIG. FIG. 9A is a flowchart illustrating an example of a connection procedure of the apparatus connection method according to the second embodiment. FIG. 9B is a flowchart illustrating an example of a connection procedure of the apparatus connection method according to the first embodiment, following FIG. 9A.

  FIG. 10 shows connections when base station apparatuses 310 and 320 to 3N0 are newly added at positions adjacent to the n-dimensional base station apparatus 300. As shown in FIG. 9A, base station apparatuses 310 and 320 to 3N0 are newly installed at positions adjacent to the n-dimensional base station apparatus 300 (step S21).

  The connection changeover switches 301 and 302 to 30N of the base station apparatus 300 are set to the “intersection” mode (step S22). The connection changeover switches 311 and 321 to 3N1 of the base station devices 310 and 320 to 3N0 are set to the “parallel” mode (step S23). Then, the base station apparatus 300 and the base station apparatuses 310 and 320 to 3N0 are connected to each other (step S24). N connection change-over switches 311 and 312 to 31N are connected to the base station apparatus 310. The base station apparatus 320 is connected with N connection changeover switches 321 and 322 to 32N. N connection change-over switches 3N1, 3N2 to 3NN are connected to the base station device 3N0.

  FIG. 11 shows a connection when a new base station device 500 is added by expanding a place for installing the base station device next to the base station device 310. Connection switching switches 501 and 502 to 50N are connected to the base station device 500. As shown in FIG. 9B, a base station apparatus 500 is newly installed next to the base station apparatus 310 (step S25). The connection changeover switch 311 of the base station apparatus 310 in the “parallel” mode is set to the “intersection” mode (step S26). The connection changeover switches 501 and 502 of the base station device 500 are set to the “parallel” mode (step S27). Furthermore, the base station device 500 is connected to each empty terminal of the connection changeover switch 311 via the connection changeover switches 501 and 502 (step S28). In this way, the base station device 500 is directly connected to the base station device 300 installed at a remote position via the connection changeover switch 311. In other words, the base station device 500 is directly connected to the first installed base station device 300 via the connection changeover switch 311 (step S29). The wiring used between the existing base station apparatuses, for example, the wiring connecting the connection changeover switches 301 and 311 is an extension wiring. At this time, it is not necessary to change the connection between the connection changeover switches 301 and 311.

  Similarly to the first embodiment, when a base station device is further added after the base station device 500, the newly added base station device passes through the connection changeover switch of the base station device 500. Thus, direct connection with the base station apparatus 300 installed first can be realized.

(Explanation of effect)
As described above, the apparatus connection method of the second embodiment introduces a connection changeover switch for connection between base station apparatuses connected in n dimensions. As a result, by reusing the wiring used between the existing base station devices as the extension wiring, the new base station device installed in the newly expanded position and the first installed base station Direct connection of devices can be realized.

  The apparatus connection method of the second embodiment having such a feature does not require a place for installing the new apparatus by replacing the old apparatus, and provides a place for additionally installing the new apparatus. It is not necessary to prepare in advance. In addition, there is an effect of providing a direct connection between a new device installed at a distant position and an old device without removing the wiring used for the connection between existing devices.

  Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. It goes without saying that various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention, and these are also included in the scope of the present invention.

A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.
(Appendix 1) A communication system in which devices are directly connected to communicate with each other,
Comprising at least one functional block and an inter-device resource sharing switch for connecting other devices to share resources;
A communication system in which a connection changeover switch for switching connection from another device connected earlier to another device added later is inserted in a connection path between the devices.
(Supplementary note 2) The communication system according to supplementary note 1, wherein the inter-device resource sharing switch performs inter-device resource sharing by switching to a connection with a functional block in another connected device.
(Supplementary note 3) The communication system according to supplementary note 1 or supplementary note 2, wherein the inter-device resource sharing switch has a plurality of contacts which are connection paths between the devices.
(Supplementary note 4) The communication system according to Supplementary note 1 or Supplementary note 2, wherein the inter-device resource sharing switch has N contacts which are connection paths between the devices.
(Supplementary Note 5) The connection change-over switch has at least first to fourth contacts, connects the first contact and the third contact, and connects the second contact and the fourth contact; It is possible to connect between the contacts by switching to a crossing mode in which the contact and the fourth contact are connected, and the second contact and the third contact are connected. Communications system.
(Supplementary Note 6) A radio unit, a baseband processing unit, and an inter-device resource sharing switch that performs resource sharing by connecting another connected base station device,
A base station apparatus, wherein a connection changeover switch for switching connection from another base station apparatus connected earlier to another base station apparatus added later is inserted in a connection path between the base station apparatuses.
(Supplementary note 7) The base station apparatus according to supplementary note 6, wherein the inter-apparatus resource sharing switch performs inter-apparatus resource sharing by switching to a connection with a radio unit or a baseband processing unit in another connected base station apparatus. .
(Supplementary note 8) The base station device according to supplementary note 6 or supplementary note 7, wherein the inter-device resource sharing switch has a plurality of contact points that are connection paths between the base station devices.
(Supplementary note 9) The base station device according to supplementary note 6 or supplementary note 7, wherein the inter-device resource sharing switch has N contacts that serve as a connection path between the base station devices.
(Supplementary Note 10) The connection change-over switch has at least first to fourth contacts, connects the first contact and the third contact, and connects the second contact and the fourth contact; The contact point according to any one of appendix 6 to appendix 9, wherein the contact point and the fourth contact point can be connected and the contact point can be connected by switching to a crossing mode in which the second contact point and the third contact point are connected. Base station device.
(Supplementary Note 11) A method for connecting devices that are directly connected and communicate with each other,
Connecting the first and second devices by inserting a first connection changeover switch into the connection path between the devices;
The first connection selector switch has at least first to fourth contacts, connects the first contact and the third contact, connects the second contact and the fourth contact, and the first contact. It is possible to connect between the contacts by switching to a crossing mode in which a fourth contact is connected and a second contact is connected to a third contact, and the connection path is connected between the first and third contacts, The second and fourth contacts, the first and fourth contacts, or the second and third contacts are connected,
A third device is connected to an unused contact among the first to fourth contacts of the first connection changeover switch,
The first device is connected from the second device to the third device by switching the mode of the first connection changeover switch from the parallel mode to the intersecting mode or from the intersecting mode to the parallel mode. Switch the device connection method.
(Supplementary Note 12) The second and third devices are connected by inserting a second connection changeover switch into the connection path between the devices,
The second connection change-over switch has at least first to fourth contacts, connects the first contact and the third contact, connects the second contact and the fourth contact, and the first contact. It is possible to connect between the contacts by switching to a crossing mode in which a fourth contact is connected and a second contact is connected to a third contact, and the connection path is connected between the first and third contacts, The second and fourth contacts, the first and fourth contacts, or the second and third contacts are connected,
A fourth device is connected to an unused contact among the first to fourth contacts of the second connection changeover switch,
By switching the mode of the second connection changeover switch from the parallel mode to the intersection mode or from the intersection mode to the parallel mode, the first device is connected to the fourth device from the third device. The apparatus connection method according to appendix 11, wherein:
(Supplementary note 13) The device connection method according to supplementary note 12, wherein the first device includes at least one functional block and an inter-device resource sharing switch that connects another device to perform resource sharing.
(Supplementary note 14) The device connection method according to supplementary note 13, wherein the inter-device resource sharing switch switches the connection to a functional block in another connected device and performs inter-device resource sharing.
(Supplementary Note 15) The device connection method according to Supplementary Note 13 or Supplementary Note 14, wherein the inter-device resource sharing switch has a plurality of contact points that are connection paths between the devices.
(Supplementary note 16) The device connection method according to supplementary note 13 or supplementary note 14, wherein the inter-device resource sharing switch has N contacts which are connection paths between the devices.

  The present invention can be applied not only to base station devices related to wireless communication processing, but also to systems in which devices are directly connected to communicate with each other.

01, 02, 03, 04 Connection terminal 10, 100, 110, 120, 130, 140 Base station device 101, 102, 111, 112, 121, 122, 131, 132, 141, 142 Connection changeover switch 200 Inter-device resource sharing Switch 201, 202 Connection end of inter-device resource sharing switch 300, 310, 320, 3N0 Base station device 301-30N, 311-3N1, 321-32N, 3N1-3NN Connection changeover switch 400 Inter-device resource sharing switch 401, 402- 40N Inter-device resource sharing switch connection end 500 Base station apparatus 501, 502 to 50N Connection changeover switch 602 Line processing unit 604 Monitoring control unit 606 Baseband processing unit 608 Call processing unit 610 Radio unit 622 Resource measurement unit 624 Determination unit 626 Card Control unit 632 switch

Claims (10)

A communication system in which devices are directly connected to communicate with each other,
Comprising at least one functional block and an inter-device resource sharing switch for connecting other devices to share resources;
A communication system in which a connection changeover switch for switching connection from another device connected earlier to another device added later is inserted in a connection path between the devices.   The communication system according to claim 1, wherein the inter-device resource sharing switch performs inter-device resource sharing by switching to a connection with a functional block in another connected device.   The communication system according to claim 1, wherein the inter-device resource sharing switch has a plurality of contacts that are connection paths between the devices.   The communication system according to claim 1, wherein the inter-device resource sharing switch has N contacts that serve as a connection path between the devices.   The connection change-over switch has at least first to fourth contacts, connects the first contact and the third contact, connects the second contact and the fourth contact, the first contact and the fourth contact. The communication system according to any one of claims 1 to 4, wherein the contacts can be connected to each other by switching to a crossing mode in which the contacts are connected and the second contact and the third contact are connected. . A radio unit, a baseband processing unit, and an inter-device resource sharing switch that performs resource sharing by connecting another connected base station device;
A base station apparatus, wherein a connection changeover switch for switching connection from another base station apparatus connected earlier to another base station apparatus added later is inserted in a connection path between the base station apparatuses.   The base station apparatus according to claim 6, wherein the inter-apparatus resource sharing switch performs inter-apparatus resource sharing by switching to a connection with a radio unit or a baseband processing unit in another connected base station apparatus.   The base station apparatus according to claim 6 or 7, wherein the inter-apparatus resource sharing switch has a plurality of contacts that are connection paths between the base station apparatuses.   The base station apparatus according to claim 6 or 7, wherein the inter-apparatus resource sharing switch has N contacts that serve as a connection path between the base station apparatuses. A connection method between devices that are directly connected and communicate with each other,
Connecting the first and second devices by inserting a first connection changeover switch into the connection path between the devices;
The first connection selector switch has at least first to fourth contacts, connects the first contact and the third contact, connects the second contact and the fourth contact, and the first contact. It is possible to connect between the contacts by switching to a crossing mode in which a fourth contact is connected and a second contact is connected to a third contact, and the connection path is connected between the first and third contacts, The second and fourth contacts, the first and fourth contacts, or the second and third contacts are connected,
A third device is connected to an unused contact among the first to fourth contacts of the first connection changeover switch,
The first device is connected from the second device to the third device by switching the mode of the first connection changeover switch from the parallel mode to the intersecting mode or from the intersecting mode to the parallel mode. Switch the device connection method.

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