WO2010133157A1

WO2010133157A1 - Method, apparatus and system for communication

Info

Publication number: WO2010133157A1
Application number: PCT/CN2010/072843
Authority: WO
Inventors: 朱星; 郑宇轩; 司巍峰; 浦海
Original assignee: 华为技术有限公司
Priority date: 2009-05-18
Filing date: 2010-05-17
Publication date: 2010-11-25
Also published as: CN101568135A; CN101568135B

Abstract

The present invention relates to a method, an apparatus and a system for communication. Said method includes: a ground station unit and a satellite station unit both corresponding to a Base Transceiver Station (BTS) are set on a Base Station Controller (BSC), and parameters of communication by using a ground transmission link between the BSC and the BTS are stored in the ground station unit, and parameters of communication by using a satellite transmission link between the BSC and the BTS are stored in the satellite station unit; if the ground transmission link is available, according to parameters of communication by using a ground transmission link, the ground transmission link between the BSC and the BTS is utilized for communication; if the interrupt of ground transmission link is determined, according to parameters of communication by using a satellite transmission link, the satellite transmission link between the BSC and the BTS is automatically initiated for communication. The invention can automatically switch from the ground transmission link to the satellite transmission link after the ground transmission link has been interrupted, and automatically select corresponding control parameters for data communication. Thus the communication recovery time is shortened, and the system reliability is enhanced.

Description

Communication method, device and system

The present application claims priority to Chinese Patent Application No. 200910145372.2, entitled "A Communication Method, Apparatus and System", filed on May 18, 2009, the entire contents of in.

Technical field

The present invention relates to the field of wireless network communication technologies, and in particular, to a communication method, a base station, a base station controller, and a communication system.

Background technique

In a normal transmission network, the Abis (Abis interface) interface generally uses a cable/fiber-based terrestrial transmission link. The Abis interface is an interface between a base station (BTS, Base Transceiver Station) and a base station controller (BSC). If an Abis interface ground transmission link is interrupted due to an unexpected event such as a natural disaster, the ground needs to be restored. The transmission link, even maintenance personnel need to go to the corresponding site for manual operation, in order to restore the smoothness of the ground transmission link. However, after an emergency (such as an earthquake), the recovery of the terrestrial transmission link may take a long time, which is not conducive to the rapid recovery of communication in the relevant area.

In this regard, a method for recovering a transmission link is initiated when the primary link is faulty. Currently, the time division multiplexing (TDM) ring network and the Internet (IP, Internet Protocol) are mainly used. Route backup to achieve.

The process of recovering the transmission link by using the TDM ring network includes:

The two E1 transmission ports of the BTS (such as 0# and 1#) are respectively connected to the BSC, and the two transmission links constitute a so-called "ring". Among them, the 0##1 transmission port is connected to the BSC through the terrestrial transmission link, which is customarily called "positive ring"; wherein the E1 transmission port is connected to the BSC through the satellite transmission link, which is customarily called "reverse". ring". When the terrestrial transmission link is working normally, the communication data between the BSC and the BTS is all transmitted through the terrestrial transmission link. Once the terrestrial transmission is interrupted, the BTS will use the satellite transmission link to establish a connection with the BSC recovery. After the connection is restored, since the transmission delay of the satellite transmission link is significantly larger than the transmission delay of the terrestrial transmission link, it is necessary to manually adjust or modify the control parameters of the BSC after the ground transmission link is switched to the satellite transmission link. Subsequent communication with the BTS The data will be transmitted over the satellite transmission link. However, this method is only applicable to the case where the transmission link of the Abis interface is transmitted by TDM, and the control parameters on the BSC need to be manually configured or modified.

The process of recovering a transmission link by using IP route backup includes:

There are two routing paths between the BSC and the BTS: 0#route and 1#route, where 0#route corresponds to terrestrial transmission, and 1#route corresponds to satellite transmission. When the terrestrial transmission is normal, the BSC and BTS send and receive communication data through the 0# route; once the terrestrial transmission is interrupted, the BSC and BTS will detect the 0# route interruption, enable the backup 1# route, and transmit the communication through the satellite transmission link. Data, realizing the switching of the transmission link. After the successful handover, since the transmission delay of the satellite transmission link is significantly larger than the transmission delay of the terrestrial transmission link, it is necessary to manually switch from the terrestrial transmission link to the satellite transmission link. To configure or modify the control parameters of the BSC. However, this method is only applicable to the case where the transmission link of the Abis interface uses IP transmission. It is also necessary to manually configure or modify the control parameters on the BSC.

It can be seen that the prior art can only adopt a single transmission mode for the terrestrial transmission link and the satellite transmission link, and after the link is restored, it needs to be manually completed and related to the transmission link type (ground link/satellite link). The configuration or modification of the control parameters and the long time to resume communication. For the terrestrial transmission link and the satellite transmission link, different transmission modes are adopted respectively, and the above technology cannot automatically enable the backup transmission link.

Summary of the invention

The embodiments of the present invention provide a communication method, a base station, a base station controller, and a communication system, to reduce the time for restoring communication and improve the reliability of the system after the ground transmission link is interrupted.

In order to solve the above technical problem, an embodiment of the present invention provides a communication method, where the method includes: if it is determined that the terrestrial link is normal, the ground between the base station controller and the base station stored according to the ground station unit of the base station controller The parameters of the transmission link communication are communicated by using a terrestrial transmission link between the base station controller and the base station;

If it is determined that the terrestrial transmission link is interrupted, automatically starting the base station controller and the base station according to a parameter of the satellite transmission link communication between the base station controller and the base station stored by the satellite station unit of the base station controller The satellite transmission link communicates.

Correspondingly, an embodiment of the present invention further provides a base station controller, including:

a ground station unit, configured to store the base station controller and the base station to communicate through a terrestrial transmission link Parameter

a satellite station unit, configured to store parameters of the base station controller and the base station communicating through a satellite transmission link;

a link initiation unit, configured to use the ground transmission link between the base station controller and the base station to communicate according to parameters stored by the ground station unit when the terrestrial link is normal, and determine a terrestrial transmission link When the notification of the interruption is interrupted, the satellite transmission link between the base station controller and the base station is automatically started to communicate according to the parameters stored by the satellite station unit.

Correspondingly, the embodiment of the present invention further provides a communication system, including a first base station controller and a second base station controller corresponding to one base station, where

The first base station controller includes:

a ground station unit, configured to store parameters of the first base station controller and the base station communicating through a ground transmission link;

a first link initiation unit, configured to perform communication by using a ground transmission link between the first base station controller and the base station according to a parameter stored by the ground station unit when the terrestrial transmission link is normal;

The second base station controller includes:

a satellite station unit, configured to store parameters of the second base station controller and the base station communicating through a satellite transmission link;

a second link initiation unit, configured to automatically start the second base station controller according to a parameter stored by the satellite station unit when determining that the ground transmission link between the first base station controller and the base station is interrupted Communicating with a satellite transmission link between the base stations.

Correspondingly, an embodiment of the present invention further provides a base station, including:

The terrestrial transmission link initiates a communication unit, configured to initiate and utilize the terrestrial transmission link to communicate when a terrestrial transmission link between the base station and the base station controller is normal;

a detecting unit, configured to detect an on/off state of the terrestrial transmission link after transmitting the ground transmission link, and send a notification that the terrestrial transmission link is interrupted;

And a satellite transmission link activation unit, configured to start a satellite transmission link between the base station and the base station controller to communicate when receiving the notification of the ground transmission link interruption sent by the detection unit. As can be seen from the above technical solution, the embodiment of the present invention sets a ground station unit and a satellite station unit corresponding to one base station on the base station controller. The ground station unit stores configuration parameters when the base station controller communicates with the base station by using a terrestrial transmission link, and the configuration parameters of the base station controller and the base station when using the satellite transmission link for communication are stored in the satellite station unit. In the case, the base station and the base station controller communicate through the terrestrial transmission link, and in the case that the terrestrial transmission link is interrupted, the base station or the base station controller automatically uses the satellite transmission link to restore the connection between the two, and automatically selects the corresponding The configuration parameters are communicated to shorten the time for restoring communication and improve the reliability of the system.

DRAWINGS

1 is a flowchart of a communication method provided in an embodiment of the present invention;

2 is a schematic structural diagram of a base station controller according to an embodiment of the present invention;

3 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

4 is a schematic structural diagram of a base station provided in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another communication system according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an application example 1 according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of an application example 2 according to an embodiment of the present invention.

detailed description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart of a communication method provided in an embodiment of the present invention. In this embodiment, two logical base stations, that is, a ground station unit, are set on a network element on a network side, for example, a base station controller. And a satellite station unit, which may also be referred to as a ground station and a satellite station. For example, the ground station unit and the satellite station unit are set on the same base station controller, but it is not limited thereto, and may be set on different base station controllers. In this embodiment, the ground station unit and the satellite station unit are set in For example, a base station controller is configured to set two logical base stations corresponding to one physical base station on a base station controller: a ground station unit and a satellite station unit, where the base station controller and the base station are stored in the ground station unit through the ground. a parameter of the transmission link communication, storing, in the satellite station unit, a parameter for communication between the base station controller and the base station through the satellite transmission link, the method comprising: Step 101: If the terrestrial link is normal, according to the The parameters of the terrestrial transmission link communication are communicated by using a terrestrial transmission link between the base station controller and the base station; Step 102: If it is determined that the terrestrial transmission link is interrupted, the parameter of the satellite transmission link communication automatically starts communication with the satellite transmission link between the base station controller and the base station.

In this embodiment, when the terrestrial link is normal, the ground transmission link between the base station controller and the base station is used to communicate according to the parameter of the terrestrial transmission link communication, and it is determined whether the terrestrial transmission link is interrupted. And automatically starting a satellite transmission link between the base station controller and the base station according to the parameter of the satellite transmission link communication. Otherwise, continue to use the terrestrial transmission link for communication.

In step 102, determining whether the terrestrial transmission link is interrupted may include three situations, wherein one case is: the operation and maintenance system confirms whether the terrestrial transmission link is interrupted, and specifically includes: under normal circumstances, the terrestrial transmission link remains unblocked. At this time, the operation and maintenance system runs a monitoring program to detect whether the ground transmission link is interrupted. When the ground transmission link is detected to be interrupted, the operation and maintenance system sends a notification of the ground transmission link interruption to the BSC, and receives the notification at the BSC. After the notification of the ground transmission link interruption, the satellite transmission link between the base station controller and the base station is automatically started to communicate according to the stored parameters of the satellite transmission link communication;

In one case, the BSC confirms whether the ground transmission link is interrupted, including: Under normal circumstances, the ground transmission link remains clear. At this time, the BSC starts its own detection procedure. If the ground transmission link is detected to be interrupted, The stored parameters of the satellite transmission link communication automatically initiate communication with the satellite transmission link between the base station controller and the base station;

In another case, the BTS confirms whether the terrestrial transmission link is interrupted, including: Under normal circumstances, the terrestrial transmission link remains unblocked. At this time, the BTS starts its own monitoring procedure to monitor whether the terrestrial transmission link is interrupted. When the ground transmission link is detected to be interrupted, the satellite transmission link between the base station controller and the base station is automatically started to communicate according to the parameters of the satellite transmission link communication.

The automatically starting the communication between the base station controller and the base station based on the parameters of the satellite transmission link communication may include two situations:

In one case, when the BTS detects that the terrestrial transmission link is interrupted, it sends a connection establishment message to the BSC through the satellite transmission link; the BSC sends a connection establishment response message to the BTS through the satellite transmission link; after that, the BTS and the BSC pass the satellite. Transmission link for communication; In another case: after receiving the notification of the ground transmission link interruption or detecting the interruption of the terrestrial transmission link, the BSC sends a connection establishment message to the BTS through the satellite transmission link; the BTS sends the connection establishment to the BSC through the satellite transmission link. In response to the message, the BTS and the BSC then communicate via the satellite transmission link.

Preferably, after determining the ground transmission link interruption, in order to avoid the erroneous switching caused by the flashing of the ground transmission link, the method may further include:

The base station or the base station controller starts a corresponding timer, and if the ground transmission link is still in an interrupted state when the timer exceeds a preset value, step 102 is performed to start the satellite transmission link for communication.

In the embodiment of the present invention, the ground station unit and the satellite station unit may be integrated on the same base station controller, or may be integrated in different two base station controllers. The embodiment of the invention is not limited.

Based on the implementation process of the foregoing method, the embodiment of the present invention further provides a base station controller. The structure of the base station is shown in FIG. 2. In this embodiment, two logical base stations, that is, a ground station unit and The satellite station unit, the ground station unit and the satellite station unit may also be referred to as a ground station and a satellite station. The ground station unit and the satellite station unit may be set on the same base station controller, but it is not limited thereto, and may be set on different base station controllers. In this embodiment, the ground station unit and the satellite station unit are set in For example, a base station controller is configured to set two logical base stations corresponding to one physical base station on the base station controller. The base station controller may include: a ground station unit 21, a link initiation unit 22, and a satellite station unit 23. The ground station unit 21 is configured to store a parameter that the base station controller communicates with the base station through a terrestrial transmission link, and the satellite station unit 23 is configured to store the base station controller and the base station to communicate through a satellite transmission link. a link initiation unit 22, configured to use the ground transmission link between the base station controller and the base station to communicate according to parameters stored by the ground station unit when the terrestrial link is normal, and determine the ground transmission chain When the road is interrupted, the satellite transmission link between the base station controller and the base station is automatically started to communicate according to parameters stored by the satellite station unit.

Preferably, the base station controller may further include: a detecting unit, configured to detect a communication state of the terrestrial transmission link after the ground transmission link between the base station controller and the base station communicates, and detect When the communication state of the terrestrial transmission link is interrupted, the link initiation unit is A notification to send a ground transmission link interruption.

The base station controller may further include: a timing unit, configured to start timing when the detecting unit detects that the communication state of the terrestrial transmission link is interrupted, and When the timing exceeds a preset value, the detecting unit is notified to send a notification that the ground transmission link is interrupted to the link activation unit.

The link initiation unit may include: a sending unit, configured to send, by the ground transmission link between the base station controller and the base station, a connection establishment message to the base station when the terrestrial link is normal; or in the ground transmission chain When the path is interrupted, the connection establishment message is sent to the base station through the satellite transmission link between the base station controller and the base station; the receiving unit is configured to receive the setup response message sent by the base station by using the ground transmission link between the base station controller and the base station; Or receiving a connection establishment response message sent by the base station by using a satellite transmission link between the base station controller and the base station.

Correspondingly, the embodiment of the present invention further provides a communication system, and a schematic structural diagram of the system is shown in FIG. 3. The system includes: a first base station controller 31 and a second base station controller 32, and a first base station controller 31 and The second base station controller 32 corresponds to one base station 33. among them,

The first base station controller 31 includes: a ground station unit 311 and a first link activation unit 312, where the ground station unit 311 is configured to store parameters of the first base station controller and the base station communicating through the ground transmission link. The first link initiation unit 312 is configured to use the ground transmission link between the first base station controller and the base station to communicate according to parameters stored by the ground station unit when the terrestrial link is normal;

The second base station controller 32 includes: a satellite station unit 321 and a second link activation unit 322, where the satellite station unit 321 is configured to store the second base station controller and the base station through a satellite transmission chain The second link activation unit 322 is configured to automatically initiate satellite transmission between the second base station controller and the base station according to parameters stored by the satellite station unit when determining that the ground transmission link is interrupted The link communicates.

The system may further include: a detecting unit, configured to detect a communication state of the terrestrial transmission link after the ground transmission link between the first base station controller and the base station communicates, and detect the ground When the communication state of the transmission link is interrupted, a notification of the ground transmission link interruption is sent to the second link activation unit. The system may further include: a timing unit, configured to start timing when the detecting unit detects that the communication state of the ground transmission link is interrupted, and notify the detecting unit to the second link when the timing exceeds a preset value The initiating unit sends a notification that the terrestrial transmission link is broken.

The detecting unit, or the detecting unit and the timing unit, may also be integrated in the operation and maintenance system.

Correspondingly, an embodiment of the present invention further provides a base station, which is shown in FIG. 4, and the base station includes: a ground transmission link initiation communication unit 41, a detection unit 42, and a satellite transmission link activation unit 43, where The transmission link initiation communication unit 41 is configured to start when the terrestrial transmission is normal and use the ground transmission link between the base station and the base station controller to communicate; and the detecting unit 42 is configured to perform communication after the starting the ground transmission link Detecting the on/off state of the terrestrial transmission link, and transmitting a notification that the terrestrial transmission link is interrupted; the satellite transmission link activation unit 43 is configured to: when receiving the notification of the terrestrial transmission link interruption sent by the detection unit, start the base station and The satellite transmission link between the base station controllers communicates.

Preferably, the base station may further include: a timing unit, configured to start timing when the detecting unit detects that the ground transmission link is interrupted, and the timing exceeds the pre-time When the value is set, the detecting unit is notified to send a notification that the ground transmission link is interrupted to the link activation unit.

The satellite transmission link activation unit includes: a sending unit and a receiving unit, where the sending unit is configured to: when receiving the notification of the ground transmission link interruption sent by the detecting unit, to the base station by using a satellite transmission link The controller sends a connection establishment message, and the receiving unit is configured to receive a connection establishment response message sent by the base station controller by using a satellite transmission link.

Correspondingly, the embodiment of the present invention further provides a communication system, which is shown in FIG. 5, and the system includes: a base station 51 and a base station controller 52, where the base station controller 52 is configured to store the base station control. Parameters for communicating with the base station over the terrestrial transmission link, and storing parameters for communication between the base station controller and the base station via the satellite transmission link; when the terrestrial link is normal, utilizing the parameters according to the terrestrial transmission link communication Communicate with a terrestrial transmission link between the base station controller and the base station, and when determining that the terrestrial transmission link is interrupted, automatically initiate satellite transmission between the base station controller and the base station according to parameters of the satellite transmission link communication The link communicates; the base station 51, When the ground link is normal, start and use the ground transmission link between the base station and the base station controller for communication; after starting the ground transmission link for communication, if the on/off state of the ground transmission link is detected as an interruption When the satellite transmission link between the base station and the base station controller is started to communicate.

Of course, in the specific application of the embodiment, the base station controller or the base station needs to be set to start the corresponding detection process.

The specific structure and function of the base station controller and the base station in this embodiment are described in detail in the foregoing embodiments, and details are not described herein again.

It can be seen that, in the embodiment of the present invention, the base station controller on the network side sets the ground station unit and the satellite station unit corresponding to one base station, wherein the base station is a physical entity, and the ground station unit and the satellite station unit are logical entities. The ground station unit stores parameters for ground transmission with the base station, and the satellite station unit stores parameters for performing satellite transmission between the base station controller and the base station. Under normal circumstances, the base station and the base station controller communicate through the ground transmission link. When the terrestrial transmission link is interrupted, the base station or the base station controller automatically starts the satellite transmission link between the satellite station unit and the base station, and selects corresponding control parameters for communication. In addition, in order to avoid the erroneous switching caused by the flashing of the terrestrial transmission link, the embodiment of the present invention also proposes a timing mechanism, that is, when determining the ground transmission link interruption, the start timer starts timing, and the timing exceeds When the preset value is reached, the satellite transmission link is activated for communication. Therefore, the embodiment of the present invention shortens the time for restoring communication and improves the reliability of the system, that is, improves the reliability of the mobile communication system: When a major natural disaster or an unexpected event causes the ground transmission link to be interrupted, the satellite backup link is enabled to ensure Mobile communication systems are able to resume communication in a shorter period of time. In the meantime, embodiments of the present invention can support various scenarios in which a terrestrial transmission link and a satellite transmission link use different transmission technologies (TDM/IP) networking. According to the transmission characteristics of the transmission link, after the link is switched, the corresponding system configuration parameters (for example, transmission control parameters and call control parameters) can be adopted, thereby optimizing system performance.

In order to facilitate the understanding of those skilled in the art, the following is a specific application example.

Please refer to FIG. 6 , which is a schematic structural diagram of an application example 1 according to an embodiment of the present invention. In this embodiment, the BSC 61 and the BTS 62 are included, wherein the BSC 61 includes a ground station unit 611, a satellite station unit 612, and a link activation unit 613. The BTS 62 passes through the satellite transmission link 2 (shown by a broken line in the figure) and the ground transmission chain, respectively. The road 1 is connected to the same BSC 51; the link starting unit 613 is used for the ground When the surface link is normal, the ground transmission link between the base station controller and the base station is used for communication, and when the notification of the ground transmission link interruption is received, the satellite transmission between the base station controller and the base station is started. The link communicates. The ground transmission link 1 is the primary transmission link, and the satellite transmission link 2 is the alternate transmission link. When the primary transmission link is interrupted, the standby link is started. The networking scenario of the transmission link is shown in Table 1:

Table 1

In this embodiment, for the same physical BTS, there are two logical base stations on the BSC: a satellite station unit and a ground station unit, and the transmission links of the two logical base stations are a satellite transmission link and a terrestrial transmission link, respectively. Since the transmission delay of the satellite transmission link is significantly larger than the transmission delay of the terrestrial transmission link, the configuration of the two logical base stations needs to be completed on the BSC, that is, the parameter configuration of the satellite station unit needs to meet the requirements of the satellite transmission, and the ground is The parameter configuration of the station unit needs to meet the requirements of terrestrial transmission, that is, the configuration parameters of the two logical base stations are different. After the configuration is completed, the transmission links corresponding to the two logical base stations can be in working state once they are connected.

Of course, under normal circumstances, the base station and the base station controller use the terrestrial transmission link for data transmission without using the satellite transmission link for data transmission, unless the ground transmission link is interrupted, that is, the determining unit determines the terrestrial transmission. When the link is interrupted, the satellite transmission link is initiated to transmit data. That is to say, under normal circumstances, the ground transmission link remains clear. At this time, communication data between the BSC and the BTS is transmitted through the terrestrial transmission link. The BSC shows that the ground station unit is working properly. The BSC and BTS do not transmit any data over the satellite transmission link. In the BSC's view, the transmission link of the satellite station unit was interrupted and could not work.

Once the terrestrial transmission link is interrupted, the system will automatically switch to the satellite transmission link to ensure that the communication between the BSC and the BTS can continue normally. According to different switching initiators, the specific switching scheme can be further divided into a BSC initiated transmission switching and a BTS initiated transmission switching: Initiate transmission switching for the BSC:

In the current transmission link, the system (such as the operation and maintenance system) runs a monitoring program to periodically check the on/off status of the terrestrial transmission link; if the terrestrial transmission link is detected to be interrupted by the monitoring program, the ground transmission chain will be sent to the BSC. The notification of the road interruption, after the BSC receives the notification of the ground transmission link interruption, in order to avoid the erroneous switching caused by the ground transmission flash, a protection timer can be set in the monitoring program. Once the monitor finds that the terrestrial transmission link is down, the timer will be started immediately. If the terrestrial transmission is still interrupted after the timer expires, the monitoring program will inform the BSC that the ground transmission link is down.

Of course, it is also possible to install the monitoring program on the base station controller, and the base station controller detects the on-off state of the terrestrial transmission link through the monitoring program.

After receiving the notification of the ground transmission link interruption or detecting the interruption of the terrestrial transmission link, the BSC will send a connection establishment message (for example, a link frame of the LAPD link) to the BTS through the satellite transmission link. After receiving the BSC connection setup message, the BTS will reply via the satellite transmission link. In this way, the BSC and BTS will transmit communication data over the satellite transmission link.

In the BSC's view, the transmission link of the satellite station unit is restored, and the satellite station unit is working normally, that is, the transmission link switching is completed.

For BTS initiated transmission switching:

After the BTS communicates with the BSC through the terrestrial transmission link, the BTS monitors the on/off state of the terrestrial transmission link. If the ground transmission link is interrupted, the BTS can start the protection timer to avoid erroneous switching caused by the transmission flicker. If the BTS finds that the terrestrial transmission link is still in an interrupted state after the protection timer expires, a connection setup message (for example, a link-building frame for the LAPD link) will be sent over the satellite transmission link to the BSC.

After receiving the connection establishment request message sent by the BTS, the BSC will reply through the satellite transmission link. In this way, the BSC and BTS will transmit communication data over the satellite transmission link.

In the BSC's view, the transmission link of the satellite station unit is restored and the satellite station unit is working normally. At this point, the transmission link switching is completed.

FIG. 7 is a schematic structural diagram of Application Example 2 according to an embodiment of the present invention. In this embodiment, the BSC 71, the BSC 72, and the BTS 73 are included, and the BTS 73 passes through the terrestrial transmission link 1 and The satellite transmission link 2 is connected to the BSC 71 and the BSC 72, that is, connected to the existing network BSC 71 through a terrestrial transmission link, and connected to the emergency BSC 72 via a satellite transmission link. The networking scenario of the transmission link is shown in Table 1. For details, refer to the above, and details are not described here.

The logical base station-ground station unit 711 corresponding to the BTS 73 is established on the BSC 71, and the parameter configuration of the ground station unit satisfies the requirements for terrestrial transmission; the logical base station-satellite station unit 721 corresponding to the BTS 73 is established on the BSC 72, and the parameter configuration of the satellite station unit is configured. Meet the requirements of satellite transmission. The ground station unit 711 is connected to the first link activation unit 722, and the first link activation unit 722 is configured to: according to the parameters of the terrestrial transmission link communication stored by the ground station unit 721 unit when the terrestrial link is normal. Communicating with the terrestrial transmission link between the first base station controller and the base station; the satellite station unit 721 is coupled to the second link initiation unit 722, wherein the second link initiation unit 722 is configured to determine the terrestrial transmission link Interrupting, for example, receiving a notification of a ground transmission link interruption sent by the operation and maintenance system, thereby determining a ground transmission link interruption, automatically starting the second base station control according to parameters of satellite transmission link communication stored in the satellite station unit Communicate with the satellite transmission link between the base station and the base station. Under normal circumstances, BSC71 and BTS73 transmit communication data through terrestrial transmission link 1, and the ground station unit is normally operated on BSC71; and BSC72 and BTS73 do not transmit any data through the satellite transmission link, so the satellite is displayed on BSC72. The transmission link of the station unit is interrupted and the satellite station unit cannot operate due to a transmission link failure.

However, once the BTS 73 detects a ground transmission link interruption, the system will automatically switch to the satellite transmission link to ensure that the communication between the BSC and the BTS can continue normally. The specific switching mechanism and implementation process are the same as the single BSC solution, and can also be divided into two types: BSC initiation and BTS initiation. The specific implementation process is detailed above, and will not be described here.

It should be noted that the embodiments of the present invention can be applied not only to communication systems such as CDMA and UMTS, but also to communication systems such as LTE. The satellite station unit and the ground station unit in the embodiments of the present invention may also be referred to as a ground station unit and a satellite station unit.

Therefore, the embodiment of the present invention establishes a ground station unit and a satellite station unit corresponding to one base station in the BSC, wherein the base station is a physical entity, and the ground station unit and the satellite station unit are logical entities, and the transmission is configured for the ground station unit and the satellite station unit. When the required control parameters, under normal circumstances, the base station and The base station controller communicates through the terrestrial transmission link, and in the case that the terrestrial transmission link is interrupted, the base station or the base station controller automatically activates the satellite transmission link between the satellite station unit and the base station, and selects corresponding control The parameters are communicated. In addition, in order to avoid the erroneous switching caused by the flashing of the terrestrial transmission link, the embodiment of the present invention also proposes a timing mechanism, that is, when determining the ground transmission link interruption, the start timer starts timing, and the timing exceeds the preset. When the value is reached, the satellite transmission link is initiated for communication. The embodiment of the invention improves the reliability of the mobile communication system: When a major natural disaster or an unexpected event causes the ground transmission link to be interrupted, the satellite communication link is enabled to ensure that the mobile communication system can resume communication in a shorter time. In the meantime, embodiments of the present invention can support various scenarios in which the terrestrial transmission link and the satellite transmission link use different transmission technologies (TDM/IP) networking. According to the transmission characteristics of the transmission link, after the link is switched, the corresponding system configuration parameters (for example, transmission control parameters and call control parameters) can be adopted, thereby optimizing system performance.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on the understanding, the computer software product of the present invention may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, Or the above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

Rights request

A communication method, the method comprising:

If it is determined that the terrestrial link is normal, the ground transmission chain between the base station controller and the base station is utilized according to parameters of terrestrial transmission link communication between the base station controller and the base station stored by the ground station unit of the base station controller Road communication;

2. The method of claim 1, wherein the determining the ground transmission link interruption comprises:

The base station controller detects that the terrestrial transmission link is interrupted; or

Receiving, by the base station controller, a notification that the ground transmission link is sent by the operation and maintenance system; or

The base station detects a ground transmission link interruption.

3. The method of claim 2, wherein

When the base station controller detects that the ground transmission link is interrupted, the method further includes: the base station controller starts a corresponding timer, and when the timer exceeds a preset value, performs the automatic startup. a step of communicating by a satellite transmission link; or

When the base station detects that the ground transmission link is interrupted, the method further includes:

The base station starts a corresponding timer, and when the timer exceeds a preset value, performs the step of automatically starting the satellite transmission link for communication.

4. A base station controller, comprising:

a ground station unit, configured to store parameters of the base station controller and the base station communicating through a terrestrial transmission link;

a link initiation unit, configured to: when the terrestrial link is normal, use a ground transmission link between the base station controller and the base station according to parameters stored by the ground station unit, and determine the ground When the transmission link is interrupted, the satellite transmission link between the base station controller and the base station is automatically started to communicate according to parameters stored by the satellite station unit.

The base station controller according to claim 4, further comprising:

And a detecting unit, configured to detect a communication state of the terrestrial transmission link, and send a notification that the terrestrial transmission link is interrupted to the link initiation unit when detecting that the communication state of the terrestrial transmission link is interrupted.

The base station controller according to claim 5, further comprising:

a timing unit, configured to start timing when the detecting unit detects that the communication state of the ground transmission link is interrupted, and notify the detecting unit to send the ground transmission to the link activation unit when the timing exceeds a preset value Notification of link interruption.

A communication system, comprising: a first base station controller and a second base station controller corresponding to one base station, wherein

The first base station controller includes:

The second base station controller includes:

The system according to claim 7, wherein the system further comprises: a detecting unit, configured to detect, in communication, a communication state of a terrestrial transmission link between the first base station controller and the base station And transmitting, when the communication state of the terrestrial transmission link is interrupted, a notification that the terrestrial transmission link is interrupted to the second link initiation unit of the second base station controller.

The system according to claim 8, wherein the system further comprises: a timing unit, configured to start timing when the detecting unit detects that the communication state of the terrestrial transmission link is interrupted, and When the timing exceeds the preset value, the detecting unit is notified to send a notification of the ground transmission link interruption to the second link activation unit of the second base station controller.

10. The system according to claim 9, wherein the detecting unit, or the detecting unit and the timing unit are located in the operation and maintenance system.

A base station, comprising:

The terrestrial transmission link initiates a communication unit, configured to perform communication by using the terrestrial transmission link when a terrestrial transmission link between the base station and the base station controller is normal;

a detecting unit, configured to detect an on/off state of the terrestrial transmission link after the ground transmission link communicates, and send a notification that the terrestrial transmission link is interrupted;

And a satellite transmission link activation unit, configured to automatically initiate a satellite transmission link between the base station and the base station controller to communicate when receiving the notification of the ground transmission link interruption sent by the detection unit.

The base station according to claim 11, wherein the base station further includes: a timing unit, configured to start timing when the detecting unit detects that the ground transmission link is interrupted, and exceeds a pre-time When the value is set, the detecting unit is notified to send a notification that the terrestrial transmission link is interrupted to the satellite transmission link activation unit.