WO2015085572A1

WO2015085572A1 - Distributed antenna system and master block

Info

Publication number: WO2015085572A1
Application number: PCT/CN2013/089365
Authority: WO
Inventors: 邢宏伟; 龚兰平; 袁震
Original assignee: 华为技术有限公司
Priority date: 2013-12-13
Filing date: 2013-12-13
Publication date: 2015-06-18
Also published as: CN105229930A

Abstract

Provided are a distributed antenna system and a master block. The distributed antenna system of the present invention comprises a network management device and at least two master blocks, wherein at least one of the at least two master blocks is connected to at least one slave block; each master block is a repeater at a base station side in a mobile indoor distribution system, and each slave block is a repeater at a user side in the mobile indoor distribution system; the at least two master blocks are connected to each other; and the network management device is connected to at least one of the at least two master blocks. The embodiments of the present invention can achieve the reuse of the slave block and convenient expansion, and can achieve the cross scheduling of signals. Moreover, the network management device can conduct centralized management on all the slave and master block devices, so that the configuration and maintenance are convenient and flexible.

Description

Distributed antenna system and near-end machine

Technical field

Embodiments of the present invention relate to communication technologies, and in particular, to a distributed antenna system and a near-end machine. Background technique

With the continuous evolution of 2G, 3G, 4G wireless communication technologies, especially after the launch of smart terminals, the index of demand for data services has risen, and the rapid increase of mobile users and the number of high-rise buildings, traffic density and coverage requirements. It is also rising. The indoor extension coverage of base stations is becoming more and more important, and the requirements for indoor coverage systems of multi-band multi-mode multi-operators are also increasing.

Most of the existing indoor distributed antenna systems are composed of a near-end machine and a remote unit. The near-end machine accesses the operator signal and provides a network management interface for the user to configure the maintenance device, and the remote machine outputs the coverage signal. Most of the indoor coverage applications are multi-operator, multi-standard, multi-band access, and the access capability provided by a near-end machine is limited. To provide complete access, multiple near-end machines must be used. FIG. 1 is a schematic diagram of a conventional distributed antenna system. As shown in Figure 1, each near-end machine needs to access a set of remote machines to provide coverage signals. Each near-end machine needs to access a network management system for users to configure maintenance equipment.

The following problems exist in the prior art: 1. The network management system cannot be centrally managed, and the management is inconvenient; 2. The remote end machine cannot be reused, and cannot be expanded only by adding a near-end machine. Summary of the invention

The embodiments of the present invention provide a distributed antenna system and a near-end machine, which are used to implement re-use of the near-end machine, and facilitate centralized management of the network management.

In a first aspect, an embodiment of the present invention provides a distributed antenna system, including: a network management device, at least two near-end machines, and at least one of the at least two near-end machines is connected to at least one far

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3⁄4 machine;

The near-end machine is a repeater on the base station side that can be used in a mobile indoor distribution system, and the remote machine is a repeater on the user side that can be used in the mobile indoor distribution system;

Connecting between the at least two proximal machines, the network management device and at least the at least two proximal machines A near-end machine is connected.

With reference to the first aspect, in a first possible implementation manner of the first aspect, when there are two near-end machines or three near-end machines in the at least two near-end machines, the following uses between the near-end machines At least one connection connection:

Chain connection, ring connection;

Wherein the chain connection is connected in series to the near end machine;

The annular connection is that the proximal machines are connected in series in series and end to end.

With reference to the first aspect, in a second possible implementation manner of the first aspect, when there are at least four near-end machines in the at least two near-end machines, the at least one connection manner is adopted between the near-end machines Connection: star connection, chain connection, ring connection

Wherein, the star connection is centered on one of the near-end machines, and the remaining near-end machines are connected to the central node;

The chain connection is connected in series to the proximal end machine;

In combination with the first aspect, or the first and second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the at least two near-end machines have a primary near-end machine and At least one from the near end machine, the network management device is connected to the main near end machine or to the slave near end machine.

In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, the at least one from the near-end machine has at least two from the near-end machine, The end machine is the central node, and the rest of the slave end machines are connected to the central node.

In conjunction with the third possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the at least one from the near-end machine has at least two from the near-end machine, the at least two The proximal machines are connected in series in series.

In conjunction with the third possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the at least one from the near-end machine has at least two from the near-end machine, the at least two The proximal machines are connected in series and connected end to end.

In combination with the first aspect, or any one of the first to the sixth possible implementation manners of the first aspect, in the seventh possible implementation manner of the first aspect, the single-cable or multi-line is adopted between the near-end machines Cable connection.

In a second aspect, an embodiment of the present invention provides a near-end machine, which is a repeater on a base station side that can be used in a mobile indoor distribution system, and includes:

RF processing unit and digital processing unit; The radio frequency processing unit is configured to receive the radio frequency signal of the base station and convert the digital signal to the digital processing unit, and the radio frequency processing unit is further configured to receive the digital signal of the digital processing unit and convert the digital signal into a radio frequency signal and send the signal to the base station;

The radio processing unit further includes a data scheduling unit, configured to implement data interaction between the port of the near-end machine and the port of the other near-end machine; the digital processing unit is connected to the radio frequency processing unit, and configured to: Connected to other near-end machines or remote units through ports, the remote units are repeaters on the user side that can be used in the mobile indoor distribution system, and the digital signals of the data processing unit are scheduled among the plurality of optical ports ;

The digital processing unit is further configured to communicate with the radio frequency processing unit, the other near end machines, and the remote unit via a universal public wireless interface CPRI protocol.

In conjunction with the second aspect, in a first possible implementation of the second aspect, the port is a fiber optic interface.

In the embodiment of the present invention, the distributed antenna system and the near-end machine, the distributed antenna system includes at least two near-end machines, and the near-end machines are connected, and at least one of the near-end machines is connected with at least one remote machine. Providing an overlay signal, the network management device is connected to a near-end machine, and the connection signal of any one of the at least two near-end machines can pass at least one proximal end due to the connection between the at least two near-end machines At least one remote machine connected to the machine transmits a signal, which realizes remote machine reuse, reduces deployment cost, and can expand capacity only by adding a near-end machine, and because at least two near-end machines are connected, the network management device only needs to A near-end machine is connected, and the control management data sent by the network management device can reach all the near-end machines and the remote machines, thereby realizing centralized management of all the near-end machines and the remote machines by the network management equipment. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor. 4 is a schematic diagram 1 of a third embodiment of a distributed antenna system according to the present invention;

5 is a second schematic diagram of a third embodiment of a distributed antenna system according to the present invention;

6 is a schematic diagram 3 of a third embodiment of a distributed antenna system according to the present invention;

7 is a schematic diagram 4 of a third embodiment of a distributed antenna system according to the present invention;

8 is a first schematic diagram of Embodiment 4 of a distributed antenna system according to the present invention;

9 is a second schematic diagram of Embodiment 4 of a distributed antenna system according to the present invention;

10 is a schematic diagram 3 of Embodiment 4 of a distributed antenna system according to the present invention;

11 is a schematic diagram 4 of Embodiment 4 of a distributed antenna system according to the present invention;

12 is a schematic diagram of Embodiment 5 of a distributed antenna system according to the present invention;

FIG. 13 is a schematic structural view of an embodiment of a proximal end machine according to the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that, in all the figures of all embodiments of the present invention, the broken lines are all represented as access signal data streams, and the solid lines represent control management data streams; in all the figures, the control management data stream and the signal data stream only draw the downstream flow direction. , the upstream direction of the data stream is opposite to the downstream direction.

The network management device in the embodiment of the present invention may be a device that supports a browser and supports running management software, such as a computer, a network management server, and the like. The remote machine is a repeater on the user side that can be used in the mobile indoor distribution system, or can be a radio remote unit; the near end machine is a repeater on the base station side that can be used in the mobile indoor distribution system, and can be a distributed control unit, where the base station may be a Global System of Mobile communication (GSM) system or a Base Transceiver Station (BTS) in a Code Division Multiple Access (CDMA) system, or may be A base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station (Evolutional Node B, ENB or eNodeB) in a Long Term Evolution (LTE) system. The invention is not limited. The distributed antenna system can be a single distributed antenna system (Single Distributed Antenna System, SingleDAS) is a digital room division coverage solution that offers significant advantages in terms of load power, reliability, and noise suppression.

2 is a schematic diagram of Embodiment 1 of a distributed antenna system according to the present invention. As shown in FIG. 2, the distributed antenna system of this embodiment may include: a network management device, at least two near-end machines, for example, a near-end machine 1 and a near The at least one of the at least two proximal machines is connected to at least one remote machine; the at least two proximal machines are connected, and the network management device and at least one of the at least two proximal machines are connected Machine connection. The direction of the solid arrow in Figure 2 indicates the direction of the control management data flow, and the direction of the dotted arrow indicates the direction of the signal data flow.

In the existing distributed antenna system shown in FIG. 1, each near-end machine needs to access one or a group of remote machines to provide coverage signals, and each near-end machine needs to access a network management device for users. Configure maintenance devices. The remote machine cannot be reused, and cannot be expanded only by adding a near-end machine; the network management device cannot centrally manage the near-end machine and the remote machine.

To this end, in the distributed antenna system of this embodiment, as shown in FIG. 2, at least two near-end machines are included, and the near-end machines are connected, and at least one of the near-end machines is connected with at least one remote end. To provide an overlay signal, the network management device is connected to a near-end machine.

Thus, in the distributed antenna system of the present invention, the control management data stream output by the network management device can reach all the near-end machines and the remote units, and the access signal data stream of any one of the near-end units can be scheduled to any one or more fars. Output on the terminal.

When multiple operators or single operators have more access signals, one near-end machine can't meet the demand, and the remote machine can meet the coverage requirement. By using the existing remote machine, multiple near-end machines can be connected. The access signal is aggregated to the near-end machine connected to the remote machine, and the coverage signal is output by the same or multiple remote machines, thereby realizing the reuse of the remote machine and increasing the near-end machine for capacity expansion.

Figure 2 shows the network device configuration access signal transmission process:

(1) The network management device sends the configuration command 1 to the near-end machine 1, 2, and sets the access signal of the near-end machine 2 (for example, the access signal provided by the operator A) to be dispatched to the near-end machine 1 and connected to the remote machine. On the port.

(2) The network management device sends the configuration command 2 to the remote machine, and sets the remote machine to transmit the access signal of the near-end machine 2.

(3) The network management device sends the configuration command 3 to the near-end machine 1, and sets the access signal of the near-end machine 1 (for example, the access signal provided by the operator B) to the port connected to the remote machine 1 and the remote machine. on.

(4) The network management device sends configuration command 4 to the remote machine, and sets the remote machine to transmit the access signal of the near-end machine 1. In this embodiment, the distributed antenna system includes at least two near-end machines, and the near-end machines are connected, and at least one of the near-end machines is connected with at least one remote machine, and the remote machine is used for providing coverage. The signal, the network management device is connected to a near-end machine, and the connection signal of any one of the at least two near-end machines can be connected through at least one near-end machine due to the connection between the at least two near-end machines At least one remote machine transmits signals, realizes remote machine reuse, reduces deployment cost, and can expand capacity only by adding a near-end machine, and because at least two near-end machines are connected, the network management device only needs to be close to one The terminal management connection and the control management data sent by the network management device can reach all the near-end machines and the remote machines, and realize centralized management of all the near-end machines and the remote machines by the network management equipment.

The technical solution of the embodiment of the distributed antenna system shown in Fig. 2 will be described in detail below by using several specific embodiments.

3 is a schematic diagram of Embodiment 2 of the distributed antenna system of the present invention. As shown in FIG. 3, the near end machine 1 and the network management equipment are directly connected, the near end machine 2 and the near end machine 1 are connected; the near end machine 1 and the near end machine 2 Each chain is connected to a plurality of remote machines. The direction of the solid arrow in Figure 3 indicates the direction of the control management data flow, and the direction of the dotted arrow indicates the direction of the signal data flow. On the basis of the embodiment shown in FIG. 2, when multiple operator equipment rooms are not in the same building, but all need to cover the buildings of other operators, then all the near-end machines of all operators can be connected and can be The signal is cross-distributed to the remote machine of the other party, and the coverage signal is output through the remote machine of the other party, thus realizing the cross-covering of the off-site deployment.

Figure 3 shows the network management device configuration access signal transmission process:

(1) The network management device sends configuration command 1 to the near end 1, 2, and sets the access signal of the near-end machine 2 (for example, the access signal provided by the operator A, in ^ A) to the near-end machine 1 On the port that is connected to the remote unit.

(2) The NMS sends the configuration command 2 to the near end 1, 2, and sets the access signal of the near-end machine 1 (for example, the access signal provided by the operator B, in the B:) to the near-end machine. 2 On the port connected to the remote unit.

(3) The network management device sends the configuration command 3 to the near end; . 1 on the connected remote machine, set the remote machine to transmit the access signals of the near-end machines 1 and 2.

(4) The network management device sends the configuration command. 4 To the remote machine connected to the near-end machine 2, set the remote machine to transmit the access signals of the near-end machines 1 and 2.

Among them, the cables can be connected between the near-end machines, for example, cables or optical fibers.

In this embodiment, by connecting all the local devices of multiple operators that are not in the same geographical area, the signals can be cross-distributed to the remote machine of the other party, and the coverage signal is output through the remote machine of the other party. No., realized cross-over coverage in off-site deployment.

4 is a schematic diagram 1 of a third embodiment of a distributed antenna system according to the present invention; FIG. 5 is a second schematic diagram of a third embodiment of a distributed antenna system according to the present invention; 4, 5, 6, on the basis of the system embodiment 1 shown in FIG. 2, further, in the distributed antenna system of the embodiment, at least two near-end machines have two near-end machines or three For a near-end machine, the near-end machines are connected by at least one of the following connections:

Chain connection, ring connection;

Wherein, the chain connection is connected in series to the near end machine;

The ring connection is connected in series to the near end machine and connected end to end;

And, when there are at least four near-end machines in at least two proximal machines, the near-end machines are connected by at least one of the following connection methods:

Connection method 1: Star connection

The star connection is centered on one near-end machine, and the other near-end machines are connected to the central node. Specifically, as shown in FIG. 4, the near-end machine directly connected to the network management device is used as a central node, and the other near-end machines are connected to the near-end machine as the central node, and the other near-end machines can be connected to each other. It can be disconnected. The network management device can be connected to any one of the near-end machines. Any one of the near-end machines can be connected to one or more remote units, or no remote unit can be connected.

Connection method 2: chain connection

The chain connection is connected in series for the near-end machines.

Specifically, as shown in FIG. 5, the near-end machines are sequentially connected in series, and the network management device can be connected to any one of the near-end machines, and any one of the near-end machines can be connected to one or more remote machines, or can be connected without any connection. Remote machine.

Connection method 3: ring connection

The ring connection is a series connection of the near-end machines in series and end to end.

Specifically, as shown in FIG. 6, the proximal end machines are connected in series and end to end to form a ring shape, and the network management device can be connected to any one of the proximal end machines, and any one of the near end machines can be connected to one or more remote ends. It is also possible to connect to any remote unit. The direction of the solid arrow in Figure 4-6 indicates the direction of the control management data flow, and the direction of the dotted arrow indicates the direction of the signal data flow. In any of the near-end machines in Figure 6, for example, the near-end machine 1 can transmit signal data through the near-end devices connected to the two sides, which is equivalent to two cables transmitting signals, which can support hot backup and cold backup, and can improve System reliability, because the cable capacity is limited, only the control management data is transmitted in one direction in Figure 6, if multiple cable transmission is used. When the data is input, the control management data can also be transmitted in both directions as the signal data in FIG. Hot backup refers to multiple cables between devices transmitting signals at the same time. When some cables fail, the remaining cables can also transmit signals. Cold backup refers to the use of a part of cables between devices to transmit signals. When this part of the cable fails, enable the remaining cable transmission signals.

The ring connection can support hot backup and cold backup, which can improve system reliability.

FIG. 7 is a schematic diagram 4 of Embodiment 3 of the distributed antenna system of the present invention. As shown in FIG. 7, the connection manner between the near-end machines includes the above three connection modes, namely, a star connection, a chain connection, and a ring connection.

In this embodiment, the transmission process of all configuration access signals of the network management device in FIG. 7 is similar to that in FIG. 2, and details are not described herein again.

In this embodiment, at least two of the near-end machines in the distributed antenna system are connected by at least one of a star connection, a chain connection, or a ring connection, and the star connection is centered on a near-end machine. The other proximal-end machines are connected to the central node, and the proximal-end machines in the chain connection are connected in series, and the proximal-end machines in the ring-shaped connection are connected in series and connected end to end, which is similar to the technical effects of the first embodiment and the second embodiment. The ring connection also increases the reliability of the system.

8-12 are schematic diagrams of further five embodiments of the distributed antenna system of the present invention, wherein the direction of the solid arrow in the figure indicates the direction of the control management data flow, and the direction of the dotted arrow indicates the direction of the signal data flow.

FIG. 8 is a first schematic diagram of Embodiment 4 of the distributed antenna system according to the present invention. As shown in FIG. 8, based on Embodiments 1 and 3, further, in the distributed antenna system of this embodiment, at least two near ends are provided. The machine includes: a main near-end machine and at least one slave near-end machine, wherein the near-end machine can transmit control management data directly received from the network management device to the main near-end machine, and the main near-end machine selects an optimal according to the layout of the system. The transmission strategy will control the management data more efficiently to all from the near-end and far-end machines.

The network management device is connected to the main near-end machine or to the near-end machine.

As shown in FIG. 8, the distributed antenna system includes: a main near-end machine and at least one slave near-end machine, and the network management device can be connected to the main near-end machine or connected from the near-end machine, when the network management device and the main near-end machine When connected, the control management data can be sent to other devices that need to be controlled by the main near-end machine. When the network management device is connected with the near-end machine, the control management data can be first passed between the master and the slave through the near-end machine. The transparent transmission channel sends the control management data to the main near-end machine, and then sends it from the main near-end machine to other devices that need to be controlled. 9 is a schematic diagram 2 of Embodiment 4 of the distributed antenna system of the present invention. The system shown in FIG. 9 can be based on the system shown in FIG. 2 to FIG. 8. In this embodiment, FIG. 9 As shown, at least one of the slaves includes: at least two slaves, wherein one is centered on the slave and the rest is connected to the slave.

As shown in FIG. 9, at least two slave proximal machines are included, wherein the proximal end machine 1 is a central node, and the rest from the proximal end machine are connected to the proximal end machine 1, and the rest from the near end machine can mutually Connected or not connected. The cascading structure from the near-end machine shown in Figure 9 allows more access to the signal source due to more access from the near-end machine.

10 is a schematic diagram 3 of Embodiment 4 of the distributed antenna system of the present invention. The system shown in FIG. 10 can be based on the system shown in FIG. 2 to FIG. 9. In this embodiment, as shown in FIG. 10, at least one The proximal machine includes: at least two from the near end machine, and at least two from the near end machine in series.

Further, FIG. 11 is a schematic diagram 4 of Embodiment 4 of the distributed antenna system of the present invention, and the system shown in FIG. 11 can be based on the system shown in FIG. 2 to FIG. 10, in this embodiment, as shown in FIG. 11, at least one The near-end machine includes: at least two from the near-end machine, and at least two from the near-end machine in series and connected end to end. The ring structure from the proximal end machine shown in Fig. 11 in which at least one effective communication link can be formed in addition to the failure of the proximal end machine other than the proximal end machine 1 to improve the reliability of the system. Sex.

In this embodiment, by setting the near-end machine as a main near-end machine and at least one from the near-end machine, the network management device is connected to the main near-end machine or connected to the near-end machine, thereby implementing control and management by the main near-end machine pair. Scheduling of data.

12 is a schematic diagram of Embodiment 5 of the distributed antenna system according to the present invention. Based on the systems shown in FIG. 1 to FIG. 11, further, in this embodiment, as shown in FIG. Cable or multi-cable connection, multiple lines between the near-end machine 1 and the near-end machine 2 indicate that multiple cable connections are used between the two near-end machines, so that the transmission data capacity is increased to support more cells. . The single-cable or multi-cable connection between the near-end machines can be used for load sharing and cold and hot backup of data transmission when multi-cable connection is used, which can improve system transmission capacity and stability.

Figure 12 shows the network device configuration access signal transmission process:

(1) The network management device sends configuration commands 1 to the near-end machine 1, 2, and sets two cable transmission access signals.

(2) The network management device sends the configuration command 2 to the near-end machine 1, 2, set two cables as the cold backup, and enable the two cables to transmit data when the other two cables are faulty.

(3) The network management device sends configuration commands 3 to the near-end machines 1, 2, and 3, and sets the access signals of the near-end machine 1 and the near-end machine 3 to the ports connected to the remote unit 2 and the remote unit. (4) The network management device sends configuration command 4 to the near-end machine 2, and sets the access signal of the near-end machine 2 to the port where the near-end machine 2 is connected to the remote machine.

(5) The network management device sends the configuration command 5 to the remote machine connected to the near-end machine 2, and sets the remote machine to transmit the access signals of the near-end machine 1, the near-end machine 2 and the near-end machine 3.

In this embodiment, the single-cable or multi-cable connection can be used between the near-end machines. When multi-cable connection is used, it can be used for load sharing and cold and hot backup, which can improve system transmission capacity and stability.

FIG. 13 is a schematic structural diagram of an embodiment of a proximal end machine according to the present invention. As shown in FIG. 13, the near-end machine 130 in this embodiment includes:

The radio frequency processing unit 1301 and the digital processing unit 1302 are configured to receive the radio frequency signal of the base station in the downlink and convert the digital radio signal into a digital processing unit 1302. The radio frequency processing unit 1301 is further configured to receive the digital processing unit 1302 in the uplink. Converting the digital signal to a radio frequency signal and transmitting the signal to the base station;

The radio processing unit 1301 further includes a data scheduling unit 1303, configured to implement data interaction between the port of the near-end machine and ports of other near-end machines; and the digital processing unit 1302 is connected to the radio frequency processing unit 1301. Connected to other near-end or remote units through a fiber optic interface, the remote unit is a repeater on the user side that can be used in the mobile indoor distribution system, and the digital signal of the data processing unit 1302 can be on multiple fiber interfaces. Inter-scheduling

The digital processing unit 1302 is configured to communicate with the radio frequency processing unit 1301, the other near-end machines, and the remote unit via a universal public radio interface CPRI protocol.

The digital processing unit is the core processing control unit of the entire distributed antenna system, and can be connected to the cascaded near-end machine or the remote machine through a port such as a fiber interface, which can be an optical port of the near-end machine in the SingleDAS, the light The number of ports can be determined according to the required data capacity, the number of remote machines and the number of near-end machines. In addition, connections can also be made via cable ports.

The digital processing unit communicates and transmits data streams with the radio frequency processing unit, other near-end machines, and the remote unit through the common public wireless interface CPRI protocol at the physical link layer. The digital processing unit of the near-end machine is connected to the network management device through a Fast Ethernet (FE) network port. The control management data flow of the network management device is sent to the near-end machine through the Ethernet, and the near-end machine can also be connected via Ethernet. The system status information is reported to the network management device. The interconnected near-end machine and the near-end machine and the remote machine control the data flow and the interaction of the access signal data stream information through the slow C&M channel or the fast FE channel in the CPRI. The digital signal of the digital processing unit (including the access signal data stream and the control management data stream) can be arbitrarily scheduled between multiple fiber interfaces, thereby implementing the near-end machine on the basis of The connection between the two. The data scheduling unit in the RF processing unit may be a Field Programmable Gate Array (FPGA) or an Application-Specific Integrated Circuit (ASIC), and the data scheduling unit may be used for the near-end machine. The various data transmitted between them are scheduled to implement data interaction between ports of any near-end machine.

For example, as shown in FIG. 2, the access signal data stream transmitted by the fiber optic interface of the near-end machine 1 and the near-end machine 2 can be scheduled to the fiber interface of the near-end machine 1 and the remote machine, that is, the connection of the near-end machine 2 The incoming signal data stream can be transmitted through the remote machine of the near-end machine 1; the control management data stream of the fiber interface of the near-end machine 1 and the network management device can be scheduled to the fiber interface of the near-end machine 1 and the near-end machine 2. In the distributed antenna system, the main near-end machine and the slave near-end machine can be included, and the main near-end machine is the control center of the whole system, which is responsible for scheduling the system data flow, and the control data flow of the main near-end machine and the network management device passes the C&M. The channel or FE channel is delivered to the slave or remote unit.

The near-end machine of this embodiment can be applied to the solution of any distributed antenna system embodiment, and the implementation principle is similar to the technical effect, and details are not described herein again.

In this embodiment, the near-end machine communicates with other near-end machines through the optical fiber interface, and the digital signal sent by the digital processing unit 1302 can be scheduled between the plurality of near-end machines and the remote machine, so that the near-end machines are interconnected. Therefore, the expansion of the near-end machine can be realized by the near-end machine, that is, the remote machine connected to different near-end machines can be reused through the interconnected near-end machines, thereby reducing the deployment cost.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are only schematic. For example, the division of the unit or module is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or modules may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or module, and may be in electrical, mechanical or other form.

The modules described as separate components may or may not be physically separate. The components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be performed by hardware related to the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the various method embodiments described above; The foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims

1. A distributed antenna system, characterized in that it includes: a network management device, at least two proximal machines, at least one of the at least two proximal machines is connected to at least one remote machine;

The near-end machine is a repeater on the base station side that can be used in the mobile indoor distribution system, and the remote machine is a repeater on the user side that can be used in the mobile indoor distribution system;

The at least two proximal machines are connected to each other, and the network management device is connected to at least one of the at least two proximal machines.

2. The system according to claim 1, characterized in that, when there are two proximal machines or three proximal machines among the at least two proximal machines, at least one of the following is used between the proximal machines. Connection methods:

Chain connection, ring connection;

Wherein, the chain connection is that the proximal machines are connected in series in sequence;

The ring connection is that the proximal machines are connected in series and connected end to end.

3. The system according to claim 1, characterized in that, when there are at least four proximal machines among the at least two proximal machines, the proximal machines are connected using at least one of the following connection methods:

Star connection, chain connection, ring connection

Wherein, the star connection uses one of the proximal machines as the central node, and the other proximal machines are connected to the central node;

The chain connection is that the proximal machines are connected in series in sequence;

4. The system according to any one of claims 1 to 3, characterized in that, among the at least two local machines, there is a master local machine and at least one slave local machine, and the network management device and the master machine are The proximal machine is connected to or connected to the slave proximal machine.

5. The system according to claim 4, characterized in that, when the at least one slave proximal machine has at least two slave proximal machines, one of the slave proximal machines is the central node, and the remaining slave proximal machines are All terminals are connected to the central node.

6. The system according to claim 4, characterized in that when the at least one slave proximal machine has at least two slave proximal machines, the at least two slave proximal machines are connected in series in sequence.

7. The system according to claim 4, wherein when the at least one slave proximal machine has at least two slave proximal machines, the at least two slave proximal machines are connected in series and connected end to end.

8. The system according to any one of claims 1 to 7, characterized in that the proximal machines are connected using a single cable or multiple cables.

9. A near-end machine. The near-end machine is a repeater on the base station side that can be used in a mobile indoor distribution system. It is characterized in that it includes:

RF processing unit and digital processing unit;

The radio frequency processing unit is used to receive base station radio frequency signals and convert them into digital signals and send them to the digital processing unit. The radio frequency processing unit is also used to receive the digital signals from the digital processing unit and convert them into radio frequency signals and send them to the digital processing unit. The base station;

The radio frequency processing unit also includes a data scheduling unit, which is used to realize data interaction between the port of the near-end machine and the ports of other near-end machines; the digital processing unit and the The radio frequency processing unit connection is used to connect with other near-end machines or remote machines through the port. The remote machine is a repeater on the user side that can be used in the mobile indoor distribution system. The data processing unit digital signals are scheduled among a plurality of said optical ports;

The digital processing unit is also used to communicate with the radio frequency processing unit, the other near-end machines and the remote machine through the common public wireless interface CPRI protocol.

10. The near-end machine according to claim 9, characterized in that the port is an optical fiber interface.