CN217607977U

CN217607977U - Communication module applied to tunnel

Info

Publication number: CN217607977U
Application number: CN202221099425.9U
Authority: CN
Inventors: 梁成业; 蒙向慧; 覃磊; 陈流伟; 陈坚; 段佳玲; 吕译桁; 覃德林; 邓小梅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Guangxi Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Guangxi Co Ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-10-18
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses a be applied to communication module in tunnel for solve the low problem of communication quality in the tunnel, with improve the interior mobile phone communication uplink and downlink speed in the tunnel. The application includes: an indoor baseband processing unit (BBU); the system comprises at least one RRU, at least one RRU and a leakage cable, wherein the RRU is in communication connection with the BBU through an optical fiber and is arranged on the inner wall of a tunnel; the at least one antenna is in communication connection with the at least one RRU, and the at least one antenna and the leakage cable are adjacently arranged on the inner wall of the tunnel; a power supply for supplying power to at least one RRU. The leakage cable can radiate electromagnetic waves to the outside while transmitting radio frequency signals in the leakage cable, an external electromagnetic field can be converted into the radio frequency signals to be transmitted in the leakage cable, the leakage cable and an antenna are adjacently arranged by utilizing the characteristics of the leakage cable, and the multichannel combined receiving and transmitting technology of the RRU is combined, so that the communication quality in the tunnel is effectively improved, and the leakage cable has the advantages of low cost and low construction difficulty.

Description

Communication module applied to tunnel

Technical Field

The utility model relates to the field of communication, especially, relate to a be applied to communication module in tunnel.

Background

In the field of communication, because a tunnel has certain sealing performance, a wireless signal in the tunnel is often weak, so that a communication user in the tunnel cannot normally communicate.

For example, subways are often constructed based on tunnels and serve as the most important component of urban public rail transit, and the traveling and life quality of people are directly influenced. The method has the characteristics of high user density, strong personnel mobility, high multi-service concurrency, sensitive user perception and the like, belongs to a high-value and high-capacity scene, and is extremely challenging in network coverage.

How to improve the communication quality in the tunnel is a technical problem to be solved by the application.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a communication module applied to a tunnel, so as to solve the problem of low communication quality in the tunnel.

The embodiment of the application provides a be applied to communication module in tunnel, include:

an indoor baseband processing unit (BBU);

at least one RRU, wherein the at least one RRU is in communication connection with the BBU through an optical fiber;

the leakage cable is in communication connection with the at least one RRU and is arranged on the inner wall of the tunnel;

at least one antenna in communication connection with the at least one RRU, wherein the at least one antenna is arranged on the inner wall of the tunnel adjacent to the leaky cable;

and the power supply is electrically connected with the at least one RRU and is used for supplying power to the at least one RRU.

Optionally, the extending direction of the leaky cable is the same as the extending direction of the tunnel;

wherein the antenna communicatively connected to the at least one RRU comprises a first antenna and a second antenna, the first antenna and the second antenna are arranged parallel to the leaky cable, and the extension directions of the first antenna and the second antenna are opposite.

Optionally, the leaky cable is disposed at a top of the inner wall of the tunnel, which is far away from the ground, and the antenna in communication connection with the at least one RRU is disposed at a first position on the inner wall of the tunnel, where the first position is located between the leaky cable and the ground.

Optionally, the at least one RRU is disposed at a second position on the inner wall of the tunnel, and the second position is located on the inner wall of the tunnel between the antenna communicatively connected to the at least one RRU and the ground.

Optionally, the RRUs adjacently arranged in the tunnel are in communication connection through a first leaky cable and a second leaky cable;

the first antenna is in communication connection with the RRU through a first group of ports of the RRU, the first leaky cable and the second leaky cable are in communication connection with the RRU through a second group of ports of the RRU, the second antenna is in communication connection with the RRU through a third group of ports of the RRU, and the first group of ports, the second group of ports and the third group of ports are sequentially adjacent ports in the RRU.

Optionally, the at least one RRU includes 8 channel RRUs, the first antenna is a 4 channel antenna, and the second antenna is a 2 channel antenna;

the first port, the second port, the third port and the fourth port of the 8-channel RRU are respectively in communication connection with 4 ports of the first antenna, the fifth port of the 8-channel RRU is in communication connection with the first leaky cable, the sixth port of the 8-channel RRU is in communication connection with the second leaky cable, and the seventh port and the eighth port of the 8-channel RRU are respectively in communication connection with 2 ports of the second antenna.

Optionally, the first leaky cable is in communication connection with a fifth port of the 8-channel RRU through a first multi-system combiner platform, and the second leaky cable is in communication connection with a sixth port of the 8-channel RRU through a second multi-system combiner platform.

Optionally, the first multi-system combiner platform is in communication connection with a fifth port of the 8-channel RRU through an optical fiber, the second multi-system combiner platform is in communication connection with a sixth port of the 8-channel RRU through an optical fiber, and the 8-channel RRU is in communication connection with at least one antenna through an optical fiber.

Optionally, the at least one antenna communicatively connected to the at least one RRU includes a yagi antenna.

Optionally, the BBU is a BBU supporting 5G communication.

The communication module applied to the tunnel provided by the embodiment of the application comprises an indoor baseband processing unit (BBU); the RRU is in communication connection with the BBU through an optical fiber; the leakage cable is in communication connection with at least one RRU and is arranged on the inner wall of the tunnel; the at least one antenna is in communication connection with the at least one RRU, and the at least one antenna and the leakage cable are adjacently arranged on the inner wall of the tunnel; and the power supply is electrically connected with the at least one RRU and is used for supplying power to the at least one RRU. The scheme is based on that the radio frequency signals can be transmitted in the leakage cable and can also radiate electromagnetic waves to the outside, the external electromagnetic field can also be converted into the radio frequency signals to be transmitted in the leakage cable, the leakage cable and the antenna are adjacently arranged by utilizing the characteristics of the leakage cable, the multichannel combined receiving and transmitting technology of the RRU is combined, the communication quality in the tunnel is effectively improved, the advantages of low cost and low construction difficulty are achieved, and the uplink and downlink rates of mobile phone communication in the tunnel can be effectively improved.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic structural diagram of a communication module applied to a tunnel according to an embodiment of the present invention.

Fig. 2 is a second schematic structural diagram of a communication module applied to a tunnel according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of the positions of the antenna and the leaking cable in the communication module applied to the tunnel according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the positions of an antenna, a leakage cable and an RRU in a communication module applied to a tunnel according to an embodiment of the present invention.

Fig. 5 is a third schematic structural diagram of a communication module applied to a tunnel according to an embodiment of the present invention.

Fig. 6 is a fourth schematic structural diagram of a communication module applied to a tunnel according to an embodiment of the present invention.

Fig. 7 is a fifth schematic structural diagram of a communication module applied to a tunnel according to an embodiment of the present invention.

Fig. 8a is a schematic diagram of RSRP vs DL THP measurement curves based on a 2T24 leaky cable coverage scheme.

Fig. 8b is a schematic diagram of a cell RI ratio based on a 2T24 leaky cable coverage scheme.

Fig. 9a is a diagram of RSRP vs DL THP measurement curves based on a tunnel specific antenna coverage scheme.

Fig. 9b is a schematic diagram of cell RI occupation based on the tunnel-specific antenna coverage scheme.

Fig. 10a is a schematic diagram of RSRP vs DL THP measurement curve based on the present scheme.

Fig. 10b is a schematic diagram of the cell RI occupation situation based on the present scheme.

Fig. 11 is a schematic diagram of an upload/download rate comparison based on a 2T24 leaky cable coverage scheme, a tunnel-specific antenna coverage scheme, and a present scheme.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention. The reference numbers in the present application are only used for distinguishing the steps in the scheme and are not used for limiting the execution sequence of the steps, and the specific execution sequence is described in the specification.

In order to solve the problems in the prior art, an embodiment of the present application provides a communication module applied to a tunnel, as shown in fig. 1, including:

an indoor baseband processing Unit (BBU) 11;

at least one Remote Radio Unit (RRU) 12, where the at least one RRU12 is in communication connection with the BBU11 through an optical fiber;

the leakage cable 13 is in communication connection with the at least one RRU, and the leakage cable 13 is arranged on the inner wall of the tunnel;

at least one antenna 14 in communication connection with the at least one RRU12, the at least one antenna 14 being disposed adjacent to the leaky cable 13 on an inner wall of the tunnel;

a power supply 15 electrically connected to the at least one RRU12 for providing power to the at least one RRU 12.

Fig. 1 shows a communication module including two RRUs, and in practical application, a greater or lesser number of RRUs may be set according to factors such as a length and a structure of a tunnel, which is not limited in the present application.

In addition, two RRUs shown in fig. 1 are respectively connected to two antennas, and in practical application, the RRUs may also be connected to a greater or lesser number of antennas, which is not limited in the present application.

In the communication module provided in the embodiment of the present application, the indoor baseband processing unit is a distributed base station architecture capable of implementing a network service function. Wherein, one BBU can support multiple RRUs. Based on the structure of the tunnel, a plurality of communication modules provided by the embodiment of the present application may also be arranged in one tunnel to ensure signal coverage in the tunnel. In practical applications, the BBU may be communicatively connected to the RRU via a fiber box and optical fibers.

The leaky cable in the embodiment of the present application may also be referred to as a leaky coax (leaky coax) or a leaky cable. The structure of the cable is similar to that of a common coaxial cable, and the cable consists of an inner conductor, an insulating medium and an outer conductor provided with periodic grooves. Electromagnetic waves are longitudinally transmitted in the leakage cable and radiated to the outside through the slot holes, and the outside electromagnetic field can be induced into the leakage cable through the slot holes and transmitted to the receiving end. Therefore, the leaky coaxial cable has both functions of a transmission line and a transmitting/receiving antenna.

In the embodiment of the application, the RRUs are in communication connection with at least one antenna, and the connected RRUs are arranged on the inner wall of the tunnel adjacent to the antenna. Based on the slotted hole structure of leaky cable, leaky cable itself has the characteristic of receiving and dispatching signals, based on the characteristic of leaky cable, lay leaky cable and antenna adjacently, form the integrated configuration of leaky cable and antenna in this application embodiment. The signal intensity can be enhanced in coordination with the antenna and the leaky coaxial cable, and compared with the leaky coaxial cable which is arranged independently and the antenna which is arranged independently, the combined structure of the leaky coaxial cable and the antenna in the embodiment of the application can further enhance the signal intensity in the tunnel and optimize the signal coverage in the tunnel.

The communication module that this application embodiment provided is applicable to in the tunnel, can show signal coverage area and signal strength in the reinforcing tunnel. Moreover, the scheme can also be applied to communication optimization and modification in the tunnel. For example, if a leaky cable is already laid in a tunnel, communication service in the tunnel is provided only through the leaky cable. Under the condition, the antenna can be additionally arranged at the position adjacent to the laid leaky cable based on the scheme provided by the embodiment of the application, so that the structure of the leaky cable and the antenna in cooperation in the scheme of the embodiment of the application is obtained, the signal quality in the tunnel is effectively enhanced, and the optimized modification of the communication in the tunnel is realized. Compare with laying new communication module again, the scheme that this application embodiment provided is favorable to carrying out the communication optimization in the tunnel, and has the construction degree of difficulty and hang down, reform transform with low costsly, reform transform advantages such as effectual.

The scheme is based on that the radio frequency signals can be transmitted in the leakage cable and can also radiate electromagnetic waves to the outside, the external electromagnetic field can also be converted into the radio frequency signals to be transmitted in the leakage cable, the leakage cable and the antenna are adjacently arranged by utilizing the characteristics of the leakage cable, the multichannel combined receiving and transmitting technology of the RRU is combined, the communication quality in the tunnel is effectively improved, the advantages of low cost and low construction difficulty are achieved, and the uplink and downlink rates of mobile phone communication in the tunnel can be effectively improved.

Alternatively, as shown in fig. 2, the extension direction of the leaky cable 13 is the same as the extension direction of the tunnel;

wherein the antenna communicatively connected to the at least one RRU comprises a first antenna 141 and a second antenna 142, the first antenna 141 and the second antenna 142 are arranged parallel to the leaky cable 13, and the first antenna 141 and the second antenna 142 extend in opposite directions.

In the embodiment of the present application, one RRU is taken as an example for description. In fig. 2, the direction of extension of the tunnel is shown by a double arrow, the direction of extension of the leaky cable coinciding with the direction of extension of the tunnel. If the number of the leaked cables is multiple, the leaked cables are parallel to each other, and the extending directions of the leaked cables are consistent with the extending direction of the tunnel.

The first antenna and the second antenna which are in communication connection with the RRU are arranged in parallel with the leaky cable, and the extending directions of the first antenna and the second antenna are opposite. Taking fig. 2 as an example, the first antenna extends to the left, and the second antenna extends to the right. In practical application, the first antenna and the second antenna shown in fig. 2 may also be arranged at different heights according to a structure in the tunnel, that is, a linear distance between the first antenna and the leaky cable may be different from a linear distance between the second antenna and the leaky cable.

Through the scheme provided by the embodiment of the application, the first antenna and the second antenna are arranged in parallel with the leakage cable, the first antenna can form a cooperative communication structure with the leakage cable, and the second antenna can also form a cooperative communication structure with the leakage cable. And the extending directions of the first antenna and the second antenna are opposite, so that the communication signals can be enhanced along the two extending directions of the tunnel, the signal coverage range is further expanded, and the signal strength in the tunnel is optimized.

Optionally, as shown in fig. 3, the leaky cable is disposed at a top of the inner wall of the tunnel, which is far from the ground, and the antenna communicatively connected to the at least one RRU is disposed at a first position on the inner wall of the tunnel, where the first position is located between the leaky cable and the ground.

Only the leaky cable, the first antenna and the second antenna are shown in fig. 3 for indicating the positional relationship between the antenna and the leaky cable. Other components of the communication module provided in the embodiment of the present application may be set in positions according to actual requirements, and are not shown in fig. 3.

The ground position is shown in fig. 3 by diagonal line hatching, and the tunnel inner wall position is shown by a line-shaped broken line frame. Reveal the cable and establish on the tunnel inner wall with the antenna equipartition. The leakage cable is arranged at the top of the inner wall of the tunnel, and the first antenna and the second antenna are arranged at the first position between the leakage cable and the ground.

Through the scheme that this application embodiment provided, lay the antenna between revealing cable and ground, can be convenient for the construction operation, reduce the construction degree of difficulty, avoid causing the influence to revealing the cable. Moreover, the arranged antenna and the leakage cable can cooperate to realize signal coverage in the tunnel, and the signal intensity in the tunnel is optimized.

Optionally, as shown in fig. 4, the at least one RRU is disposed at a second position on the inner wall of the tunnel, where the second position is located on the inner wall of the tunnel between the antenna communicatively connected to the at least one RRU and the ground.

Based on the structure shown in fig. 3, the scheme provided in the embodiment of the present application further provides a location where RRUs are arranged. Wherein the RRU is disposed at a second location between the antenna and the ground. On the one hand, can be convenient for the construction operation, reduce the construction degree of difficulty, avoid causing the influence to revealing the cable. On the other hand, the RRU disposed at the second location can be conveniently in communication connection with the antenna and the leaky cable. And the RRU at the lower position is convenient to repair and replace, and is beneficial to communication maintenance.

Optionally, as shown in fig. 5, the RRUs 12 adjacently arranged in the tunnel are communicatively connected through a first leaky cable 131 and a second leaky cable 132;

the first antenna 141 is in communication connection with the RRU12 through a first group of ports a of the RRU, the first leaky cable 131 and the second leaky cable 132 are in communication connection with the RRU12 through a second group of ports B of the RRU, the second antenna 142 is in communication connection with the RRU12 through a third group of ports C of the RRU12, and the first group of ports a, the second group of ports B, and the third group of ports C are sequentially adjacent ports in the RRU 12.

In the example shown in fig. 5, one end of the first leaky cable 131 is connected to the second set of ports B of the RRUs, and the other end can be in communication connection with an adjacent RRU arranged in the tunnel.

In the solution provided in the embodiment of the present application, the first antenna, the leakage cable, and the second antenna are sequentially connected to a continuous port on the RRU. The construction difficulty can be reduced, the communication connection structure is optimized, and the maintenance and the replacement of communication parts are facilitated. And the leakage cable is connected between the first antenna and the second antenna, so that the first antenna and the leakage cable form a cooperative structure, and meanwhile, the second antenna and the leakage cable form a cooperative structure, so that the cooperative communication effect of the antenna and the leakage cable is further optimized, the signal strength in the tunnel is enhanced, the signal coverage range is enlarged, and the communication quality is optimized.

Optionally, as shown in fig. 6, the at least one RRU includes 8 channel RRUs, the first antenna is a 4 channel antenna, and the second antenna is a 2 channel antenna;

The RRUs in the embodiment of the present application include 8 channel RRUs, and specifically may be 8TR RRUs. The first antenna is a 4-channel antenna, and may be a 4TR antenna. The second antenna is a 2-channel antenna, and may be a 2TR antenna. The antenna and the leaky cable are connected to the RRU through 1-8 ports, as indicated by 1-8 labeled in fig. 6. Through the scheme provided by the embodiment of the application, each port of the 8TR RRU can be fully utilized, and the signal coverage range is enhanced through the 4TR antenna and the 2TR antenna.

Optionally, as shown in fig. 7, the first leaky cable is communicatively connected to the fifth port of the 8-channel RRU through a first multi-system combiner platform POI171, and the second leaky cable is communicatively connected to the sixth port of the 8-channel RRU through a second multi-system combiner platform POI 272.

The multi-system combiner platform (Point of interface, POI) enables a plurality of operator devices to share and use a leaky cable. Through the scheme provided by the embodiment of the application, the communication function of the leakage cable can be conveniently shared by a plurality of operator devices.

The optical fiber described in the embodiments of the present application may also be referred to as an optical fiber, which has good optical signal transmission performance and can be used to realize high-speed low-loss signal transmission. The RRU is connected with the multi-system combiner platform through the optical fiber, so that communication delay can be reduced, and communication quality can be improved.

The yagi antenna in the embodiment of the application is an end-fire antenna formed by arranging an active oscillator, a passive reflector and a plurality of passive directors in parallel. The yagi antenna has good directivity and higher gain than the dipole antenna, and can further optimize the communication coverage in the tunnel.

Optionally, the BBU is a BBU supporting 5G communication.

The 5G users have higher requirements on internet speed, time delay and flexibility, and the scheme provided by the embodiment of the application can further optimize the communication quality and meet the requirements of communication users. In practical application, if only two leaky cables are arranged in a tunnel, 2T2R can be realized at maximum, and the requirement of a 5G network 4T4R cannot be met.

If two leaky cables are additionally arranged on the basis of the two leaky cables, although 4T4R can be theoretically realized, the equipment cost and the construction cost for newly adding the leaky cables, POI (point of interest) and the like are relatively high, and a large amount of capital investment is needed for newly adding the leaky cable deployment in a large scale. Secondly, the leaky cable is installed at intervals of 50cm, engineering construction difficulty is high, the leaky cable cannot be installed or the installation position of the leaky cable is not appropriate due to the fact that design is not reserved in the early stage under the old-age scene, the best four-flow effect cannot be achieved, the terminal position cannot be distinguished through leaky cable covering, and the performance of a cell is difficult to improve.

The scheme provided by the embodiment of the application adopts the covering mode that the leaky cable and the antenna are combined, and can be installed on a tunnel wall by simultaneously utilizing two original leaky cables and combining a tunnel special antenna under the existing 4T4R scene of upgrading and transforming the two leaky cables, so that the upgrading and transforming of 5G 4T4R are realized at low cost, and the double promotion of network capacity and covering performance is realized.

The antenna described in the embodiment of the present application may specifically be a tunnel antenna. The technical effects of the embodiments of the present application are described below with reference to actual test results.

In this embodiment, the RRUs specifically include 8t8r RRUs (2.6G, bandwidth 160W), FDD1800 RRUs, E-band RRUs, and GSM900 RRUs. For convenience of explaining the technical effects of the present embodiment, two communication module schemes are provided:

the first scheme comprises the following steps:

the 2T2R leaky cable coverage scheme is that two leaky cables are used for providing a communication function in the tunnel. Tests show that the SS-RSRP value is about-67.82 dbm, the SS-SINR value is about 33.81dB, the coverage is good, the uploading average rate is 61.69Mbps, the downloading average rate is 345.61Mbps, and the 2-stream percentage is 100%.

2T2R RSRP vs DL THP measurement curves are shown in FIG. 8a, where NR Serving SS-RSRP is the upper curve in the graph, and NR PCC DL APP Throughput is the lower curve in the graph. The 2T24 cell RI ratio case is shown in fig. 8 b.

Scheme two is as follows:

the tunnel special type antenna coverage scheme, RRU (8 TR) + yagi tunnel adherent antenna (4 TR), is split into 2 RRUs with 4 channels through 8 RRUs, and each RRU is connected with two tunnel antenna tests with 4 TR. Tests show that the SS-RSRP value is about-70.69 dbm, the SS-SINR value is about 32.78dB, the coverage is good, the uploading average rate is about 83.55Mbps, the downloading average rate is about 478.57Mbps, the 3-stream proportion is 39.16%, and the 4-stream proportion is 60.84%.

The RSRP vs DL THP measurement curve is shown in FIG. 9a, where NR Serving SS-RSRP is the lower curve in the figure, and NR PCC DL APP Throughput is the upper curve in the figure. The cell RI occupation map is shown in fig. 9 b.

According to the scheme provided by the embodiment of the application, a leaky cable antenna combined coverage scheme-8 TR RRU +2TR leaky cable +4TR antenna +2TR antenna scheme is tested. The SS-RSRP value is about-55.12 dbm, the SS-SINR value is about 35.13dB, the coverage is good, the uploading average speed is 82.71Mbps, the downloading average speed is 523.6Mbps, the 3-flow ratio is 2.66 percent, and the 4-flow ratio can reach 97.24 percent.

The RSRP vs DL THP measurement curve is shown in fig. 10a, and the cell RI occupancy is shown in fig. 10 b.

Further, the comparison of the uploading/downloading rate of the above three tunnel coverage schemes is shown in fig. 11, and the special antenna of the tunnel is shown in table 1. The scheme of the present invention compares the improvement range of the uploading/downloading rate with the 2TR leaky cable scheme. Can see through fig. 11 and table 1 directly perceivedly, to the subway tunnel scene, the special type antenna scheme in tunnel and the utility model discloses the scheme all is superior to 2TR leaky cable scheme in the network quality. The special type antenna scheme in tunnel with the utility model discloses the scheme has promoted 35.44%, 34.07% than the last rate of 2TR leaky-cable respectively, and the down rate has promoted 38.5%, 51.5%. The utility model discloses the scheme goes up the speed performance basically the same with tunnel special type antenna scheme, and the speed performance is superior to tunnel special type antenna scheme down.

TABLE 1

In addition, in the aspects of construction cost, construction cost and construction scene, a 2TR leaky cable scheme is adopted for construction, and the actual total cost (including material cost, construction cost and the like) is about 20 ten thousand yuan/km. And when the tunnel yagi antenna covering mode is purchased, two novel tunnel yagi antennas are required to be added at the power failure position of every 400 m, and the total cost is estimated to be not more than 2 ten thousand yuan/km.

Under having two cable circumstances, 5G need upgrade and reform transform into 4 flows, adopts tunnel special type antenna perhaps the utility model discloses the leaky cable + antenna combination mode of proposal only needs newly-increased cost less than 10%, has brought about 30% promotion of the rate of going upward, and down rate promotes about 35%, 50% respectively (the utility model discloses the scheme).

Obviously, under the old scene of benefit, compare 2TR leaky cable scheme, tunnel special type antenna scheme with the utility model discloses the scheme can practice thrift the cost greatly, and the utility model provides a tunnel leaky cable and the special type antenna of tunnel supplement each other under the scheme, compare tunnel special type antenna scheme cost basically the same, but down the performance has promoted 10%, has further promoted 5G network capacity and user experience, is the tunnel and covers a preferred scheme of construction.

The scheme provided by the embodiment of the application can realize 5G 4T4R under the subway tunnel scene based on the combination of the tunnel leaky cable and the tunnel special-shaped antenna under the condition of utilizing old and upgrading four flows of the original two leaky cables. The scheme adopts a BBU (baseband unit) mode, an RRU (remote radio unit), a leaky cable mode and a tunnel special antenna mode, makes full use of existing network resources, and obtains a 5G network with higher performance at lower cost. The tunnel special-type antenna is used for realizing complementation, and the network capacity is effectively improved. Utilize the utility model provides a method can compromise leaky cable and antenna coverage advantage, carries out accurate planning and reasonable deployment to the network resource under the subway tunnel scene, compares newly-increased leaky cable scheme, and the realization cost is lower. Compared with a tunnel special type antenna coverage scheme, the performance is better under the condition of consistent cost.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises that element.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A communication module for a tunnel, comprising:

an indoor baseband processing unit (BBU);

2. The communication module of claim 1, wherein the leaky cable extends in a direction that is coincident with a direction in which the tunnel extends;

wherein the antenna communicatively coupled to the at least one RRU comprises a first antenna and a second antenna, the first antenna and the second antenna running parallel to the leaky cable, the first antenna and the second antenna extending in opposite directions.

3. The communication module of claim 2, wherein the leaky cable is routed in the tunnel interior wall at a top portion remote from the ground surface, and wherein the antenna in communication with the at least one RRU is routed at a first location on the tunnel interior wall, the first location being located between the leaky cable and the ground surface.

4. The communication module of claim 3, wherein the at least one RRU is disposed at a second location on the inner wall of the tunnel, the second location being located on the inner wall of the tunnel between an antenna communicatively coupled to the at least one RRU and the ground.

5. The communication module of claim 2, wherein adjacent RRUs in the tunnel are communicatively connected via a first leaky cable and a second leaky cable;

6. The communication module of claim 5, wherein the at least one RRU comprises an 8-channel RRU, the first antenna is a 4-channel antenna, and the second antenna is a 2-channel antenna;

7. The communication module of claim 6, wherein the first leaky cable is communicatively connected to the fifth port of the 8-channel RRU via a first multi-system combiner platform, and wherein the second leaky cable is communicatively connected to the sixth port of the 8-channel RRU via a second multi-system combiner platform.

8. The communication module of claim 7, wherein the first multi-system combiner platform is communicatively coupled to a fifth port of the 8-channel RRU via fiber optics, the second multi-system combiner platform is communicatively coupled to a sixth port of the 8-channel RRU via fiber optics, and the 8-channel RRU is communicatively coupled to at least one antenna via fiber optics.

9. The communication module of any of claims 1-8, wherein the at least one antenna communicatively coupled to the at least one RRU comprises a yagi antenna.

10. The communication module of any one of claims 1-8, wherein the BBU is a BBU that supports 5G communication.