WO2012062118A1

WO2012062118A1 - Method and system for switching broadcast control channel information

Info

Publication number: WO2012062118A1
Application number: PCT/CN2011/076132
Authority: WO
Inventors: 周慧明; 王书建
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-12
Filing date: 2011-06-22
Publication date: 2012-05-18
Also published as: CN102469482A

Abstract

A method, a system and an apparatus for switching broadcast control channel (BCCH) information are disclosed in the invention. The method includes: when determining that a first Transmitting and Receiving Unit (TRU) of a base station transceiver requires BCCH data switching, a base station controller switches the BCCH data of the first TRU to a second TRU, which belongs to the same cell as the first TRU and is in a normal transmitting and receiving status. The invention solves the problem that the reception of the cell information, to which cell the first TRU belongs, is failed due to the failure of the first TRU of the BCCH, and ensures the information reception of mobile terminals in the cell. The solutions of the invention can be completely integrated into the base station software, and the implementation is simple.

Description

Broadcast control channel information switching method and system

Technical field

The present invention relates to the field of mobile communications, and in particular, to a broadcast control channel information switching method and system. Background technique

Global System For Mobile Communication (GSM) is the most widely used communication standard in mobile communications. The radio access network of the GSM system is generally called a Base Station Subsystem (BSS), and is composed of a Base Station Controller (BSC) and a Base Transceiver Station (BTS). The base transceiver station includes a Transceiving and Receiving Unit (Transmitting and Receiving). Unit, referred to as TRU), the base station subsystem performs wireless signal transmission, reception, and radio resource management operations with the mobile station through the wireless interface.

On the one hand, the mobile terminal needs to know a large amount of network information in the idle mode, and the base station sends the information to the mobile terminal through a Broadcast Control Channel (BCCH), where the information includes all frequency points of the cell and the BCCH frequency of the neighboring cell. Points, LAI (LAC+MNC+MCC), Common Control Channel (CCCH) and Cell Broadcast Channel (CBCH) management, control and selection parameters and some option parameters of the cell. When some hardware and software failure occurs in the transceiver unit where the BCCH channel of the cell is located, the entire cell will not work properly. On the other hand, in the network operation and maintenance process, it is sometimes necessary to maintain the BCCH carrier frequency on site. How to realize the switching of broadcast control channel information and ensure the normal transmission of broadcast control channel information are technical problems that need to be solved.

Summary of the invention

The technical problem to be solved by the present invention is to provide a broadcast control channel information switching method and system, which solves the problem of receiving information failure of a cell in a cell due to a TRU fault of the BCCH.

In order to solve the above technical problem, the present invention provides a broadcast control channel information switching method, and the method includes: After the base station controller determines that the first transceiver unit on the base transceiver station needs to perform broadcast control channel data switching, the broadcast control channel data on the first transceiver unit is switched to belong to the same cell as the first transceiver unit and is in normal state. Transceiver state on the second transceiver unit.

The above method may further include:

The base station controller determines that the first transceiver unit needs to perform broadcast control channel data switching according to one of the following conditions:

Detecting an alarm that the advanced data link control link is disconnected on the first transceiver unit; detecting that a software or hardware failure occurs in the first transceiver unit;

A command is received that manually forces the first transceiver unit to perform a broadcast control channel switchover.

The foregoing method may further have the following feature: the step of switching the broadcast control channel data on the first transceiver unit to a second transceiver unit that belongs to the same transceiver unit and is in a normal transceiver state

In the case of carrier frequency intermixing, the base station controller preferentially selects a transceiver unit of the same carrier type as the first transceiver unit as the second transceiver unit.

The base station controller preferentially selects a transceiver unit that does not have a baseband frequency hopping configured as the second transceiver unit.

The above method may further include:

After detecting that the first transceiver unit fails, the base station controller starts a switching timer. If the failure of the first transceiver unit is not eliminated when the timing of the switching timer arrives, the base station controller determines that the transceiver unit needs to Perform broadcast control channel data switching.

The foregoing method may further have the following feature: the step of the base station controller switching the broadcast control channel data on the first fault transceiver unit to the second transceiver unit comprises: the base station controller selecting the After receiving the transceiver unit, sending an occlusion message to the first transceiver unit and the second transceiver unit, and when the second transceiver unit has traffic, transferring the service to another location After the transceiving unit in the normal transmitting and receiving state, the switching command is executed, and after the switching is completed, the base station controller sends a de-blocking message to the first transceiver unit and the second target transceiver unit.

In order to solve the above technical problem, the present invention further provides a broadcast control channel information switching system, including a base station controller and a base transceiver station, where the base transceiver station includes a first transceiver unit, wherein the base station controller is configured to: After the first transceiver unit needs to perform broadcast control channel data switching, the broadcast control channel data on the first transceiver unit is switched to a second transceiver unit that belongs to the same cell and is in a normal transceiver state.

The above system can also have the following characteristics:

The base station controller is further configured to determine that the transceiver unit needs to perform broadcast control channel data switching according to one of the following conditions:

Detecting an alarm that the advanced data link control link is disconnected on the transceiver unit;

Notifying that the transceiver unit is notified of a software or hardware failure;

A command is received that manually forces the transceiver unit to perform a broadcast control channel switchover. The above system can also have the following characteristics:

The base station controller is further configured to: in the case of carrier frequency intermixing, preferentially select a transceiver unit of the same carrier type as the off-site transceiver unit as the second transceiver unit.

The above system may also have the following features: The base station controller is further configured to preferentially select a transceiver unit that does not have a baseband frequency hopping configured as the second transceiver unit.

In order to solve the above technical problem, the present invention further provides a base station controller, which includes a determining unit and a switching unit, where:

The determining unit is configured to: trigger the switching unit to be triggered when the first transceiver unit on the base transceiver station needs to perform the broadcast control channel data switching;

The switching unit is configured to: switch the broadcast control channel data on the first transceiver unit to a second transceiver unit that belongs to the same cell as the first transceiver unit and is in a normal transceiver state.

The above base station controller may also have the following features:

The determining unit is further configured to determine that the first transceiver unit needs to enter according to one of the following conditions: Line broadcast control channel data switching:

The above base station controller may also have the following features:

The switching unit is further configured to: in the case of carrier frequency intermixing, preferentially select a transceiver unit of the same carrier type as the first transceiver unit as the second transceiver unit.

The above base station controller may also have the following features:

The switching unit is further configured to: preferentially select a transceiver unit that does not have a baseband frequency hopping configured as the second transceiver unit.

The above base station controller may also have the following features:

The determining unit is further configured to: determine that the first transceiver unit needs to perform broadcast control channel data switching in the following manner: after detecting that the first transceiver unit fails, start a switching timer, if the timing of the switching timer When the time arrives, the fault of the first transceiver unit is still not eliminated, and it is determined that the transceiver unit needs to perform broadcast control channel data switching.

The above base station controller may also have the following features:

The switching module is configured to: after selecting the second transceiver unit, send an occlusion message to the first transceiver unit and the second transceiver unit, and when the second transceiver unit has traffic, switching And sending a de-blocking message to the first transceiver unit and the second target transceiver unit.

The above solution solves the problem that the receiving information of the cell in the cell is faulty due to the TRU fault of the BCCH, and ensures the information receiving of the mobile terminal in the cell. The above solution can be completely integrated into the base station software, and the implementation is simple. BRIEF abstract FIG. 1 is a schematic diagram of a broadcast control channel information switching method in an embodiment.

Preferred embodiment of the invention

The broadcast control channel information switching system of the embodiment of the present invention includes a base station controller and a base station transceiver, and the base transceiver station includes a transceiver unit.

The base station controller is configured to: after determining that the transceiver unit needs to perform broadcast control channel data switching, the broadcast control channel data on the transceiver unit is switched to a target transceiver unit that belongs to the same cell as the transceiver unit and is in a normal transceiver state.

The base station controller is further configured to determine, according to one of the following conditions, that the transceiver unit needs to perform broadcast control channel data switching: detecting an alarm that the high-level data link control link is disconnected on the transceiver unit; detecting that the transceiver unit is A notification of a software or hardware failure occurs; a command is received that manually forces the transceiver unit to perform a broadcast control channel switchover.

The base station controller is further configured to select, as the target transceiver unit, a transceiver unit having the same carrier type as the fault transceiver unit in the case of carrier frequency mixing and insertion.

The base station controller is further configured to preferentially select a transceiver unit that does not have a baseband frequency hopping configured as a target transceiver unit.

The base station controller of the embodiment of the present invention includes a determining unit and a switching unit.

The determining unit is configured to: trigger the switching unit when determining that the first transceiver unit on the base transceiver station needs to perform broadcast control channel data switching.

The determining unit may be further configured to determine that the first transceiver unit needs to perform broadcast control channel data switching according to one of the following conditions:

The determining unit may be further configured to determine that the first transceiver unit needs to perform broadcast control channel data switching in the following manner: After detecting that the first transceiver unit is faulty, the switching timer is started. If the failure of the first transceiver unit is not eliminated when the timing of the switching timer arrives, it is determined that the transceiver unit needs to perform broadcast control channel data switching. .

The switching unit can also be set to:

In the case of carrier frequency intermixing, a transceiver unit of the same carrier type as the first transceiver unit is preferentially selected as the second transceiver unit.

The switching unit can also be set to:

A transceiver unit that does not have a baseband frequency hopping is preferentially selected as the second transceiver unit.

The switching module can be configured to switch the broadcast control channel data on the first transceiver unit in the following manner:

After selecting the second transceiver unit, sending an occlusion message to the first transceiver unit and the second transceiver unit, and when the second transceiver unit has traffic, transferring the service to another normal After the transceiver unit of the transmitting and receiving state, the switching command is executed, and after the switching is completed, the base station controller sends a de-blocking message to the first transceiver unit and the second target transceiver unit.

As shown in FIG. 1, the broadcast control channel information switching method in the embodiment of the present invention includes: Step 101: The base station controller determines that the transceiver unit on the base transceiver station needs to perform broadcast control channel data switching.

When the BTS fails on the transceiver unit (the advanced data link control link is disconnected or a software or hardware failure occurs in the transceiver unit), the BSC reports to the BSC via the "Status Changed Message". In the case of artificial forced reversal, the BSC can learn the command to manually force the broadcast control channel switching.

The base station controller determines that the transceiver unit needs to perform broadcast control channel data switching according to one of the following conditions:

Notifying that the transceiver unit is notified of a software or hardware failure; A command is received that manually forces the transceiver unit to perform a broadcast control channel switchover. When the base station controller receives the foregoing alarm or notification, if the base station controller is performing BCCH switching on the transceiver unit, the base station controller is abandoning the trigger information caused by the current alarm or the notification, if the base station controller is performing the independent dedicated control channel (Separate) Dedicated Control Channel (SDCCH for short) Dynamic configuration, the relevant information is recorded in the data area, and the BCCH switching is performed after the SDCCH dynamic configuration is executed.

After detecting that the transceiver unit on the base transceiver station fails, the base station controller starts the switching timer (TIME1), and selects the target transceiver unit when the failure of the transceiver unit is not eliminated when the timing of the switching timer arrives. If the fault of the transceiver unit is cleared within the valid time of the switching timer, the switching process ends.

When the timing of the switching timer arrives, the BSC determines that the faulty transceiver unit is the only transceiver unit in the cell to which it belongs, the transceiver unit of the local cell participates in frequency hopping, the cell does not allow BCCH switching, or the OMU of the BTS at this time. When the LAPD is blocked, the switching process ends.

When the timing of the switching timer arrives, the target transceiver unit that is in the same cell as the transceiver unit and is in the normal receiving and receiving state cannot be turned on to restart the switching timer for the next inquiry.

Step 102: The broadcast control channel data on the transceiver unit is switched to a target transceiver unit that is in the same cell as the transceiver unit and is in a normal transceiver state.

The essence of performing BCCH data switching is that when a transceiver unit needs to perform BCCH data switching, the target transceiver unit that belongs to the same cell as the transceiver unit and is in the normal transmission and reception state inherits the logical configuration on the transceiver unit, so that the wireless data transmitted by the base station is transmitted. Continue to be effective. The BCCH data to be switched includes the state of the carrier frequency, the logical position of the carrier frequency, and the channel data. During the switching process, the following parameters are not switched: Amplifier class, carrier frequency type, frequency point, frequency hopping mode, and terminal equipment number (TEI).

When the target transceiver unit is selected, in the case of carrier frequency intermixing, the base station controller preferentially selects the transceiver unit with the same carrier type (ie, the BCCH carrier frequency is the single carrier carrier frequency or the dual carrier carrier frequency) as the target transceiver unit. In the absence of the same type of TRU, other types of TRUs are used.

When the target transceiver unit is selected, the base station controller can also preferentially select the baseband frequency hopping without configuration. The transceiver unit acts as a target transceiver unit. If the candidate TRU in the BCCH switching selects the TRU participating in the baseband frequency hopping, after the BCCH switching is successfully completed (that is, when the BCCH switching of the BTS reply is successful and the TRU of the BCCH is delayed, the baseband frequency hopping is started) The TRU is switched, the faulty TRU is removed from the original baseband frequency hopping group, and the baseband hopping table is updated.

After the base station controller selects the target transceiver unit, it sends an occlusion message to the fault transceiver unit and the target transceiver unit. When there is traffic on the target transceiver unit, the traffic is transferred to other transceiver units in the normal transmission and reception state, and the switching command is executed. After the completion of the switching, the base station controller sends a de-blocking message to the fault transceiver unit and the target transceiver unit.

In a specific implementation, the BSC occludes the TRU of the original BCCH and the candidate TRU that will be configured as the new BCCH in the database, switches or shuts down the service of the associated TRU, sets a timer (TIME2), and is at the timing of the timer (TIME2). When the time arrives, the acknowledgment message is sent to the faulty transceiver unit and the target transceiver unit, and the timer (TIME3) is set. After the BTS occlusion is successfully replied within the time of the timer (TIME3), the BCCH switching command is issued, and the timer is started. (TIME4), the BTS performs a BCCH switching operation, and changes the correspondence between the two logical TRUs and the physical TRUs that are involved in the BCCH switching, and exchanges the logical parameters of the two TRUs that are involved in the BCCH switching, and reports the "BCCH switching confirmation message" after the successful switching. " ", when the switching fails, the "BCCH switching failure message" is reported. After the BSC receives the "BCCH switching confirmation message" in the timer (TIME4), the BSC sends the TRU solution to the BCCH switching process. Blocking; after receiving the "BCCH switching failure message" in the timer (TIME4), the BSC knows that the switchover is successful, and ends the switchover. Cheng.

Manual forced BCCH switching is a special method of BCCH switching. The following describes the "manual forced BCCH switching trigger" and "manual forced BCCH switching check". The other contents are the same as the above methods. Manual forced BCCH switching is initiated by the background. Manual forced BCCH switching supports two modes: Mode 1: When the foreground selects a candidate TRU, that is, when the BCCH switching is manually initiated, the BSC selects the target TRU to perform BCCH switching. For a single TRU cell, the BCCH switch is not enabled. There is no other TRU in the cell where the BCCH is located. The manual cannot force the BCCH switchover. In the second mode, the candidate TRU is specified in the background, that is, when the BCCH switching is manually initiated, the candidate TRU is selected by the operator, and the candidate TRU must be in the same rack as the TRU of the BCCH. The foreground switches the BCCH to the TRU specified in the background. For a single TRU cell, the BCCH switch is not hit. When the candidate TRU and the BCCH are not in the same chassis, and the carrier frequency type of the candidate TRU is different from the carrier frequency of the BCCH, the manual forced BCCH switching cannot be initiated in the background.

After receiving the command to manually perform the broadcast control channel switching, the BSC checks whether the current TCCH switch is enabled, and if the BCCH switch is enabled, and if the TRU mode is specified in the foreground, it is determined whether the delivered TRU is the TRU of the BCCH. If the TRU mode is specified in the background, it is determined whether the TRU frame slot is valid, and whether the carrier frequency of the TRU of the BCCH is the same, whether it is in the same rack, if the check fails, the response is rejected and the error reason code is carried. . If the check is passed, the information about this switch is recorded in the data area.

It is a matter of course that the invention may be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

Industrial applicability

The above solution solves the problem that the information receiving in the cell is faulty due to the TRU fault of the BCCH, and ensures the information receiving of the mobile terminal in the cell. The above solution can be completely integrated into the base station software, and the implementation is simple.

Claims

Claim

A broadcast control channel information switching method, the method comprising:

After the base station controller determines that the first transceiver unit on the base transceiver station needs to perform broadcast control channel data switching, the broadcast control channel data on the first transceiver unit is switched to belong to the same cell as the first transceiver unit and is in normal state. Transceiver state on the second transceiver unit.

2. The method of claim 1 further comprising:

The method according to claim 1, wherein the switching the broadcast control channel data on the first transceiver unit to the second transceiver unit that belongs to the same transceiver unit and is in a normal transceiver state In the steps above,

5. The method of claim 1, the method further comprising:

6. The method of claims 1-5, wherein The step of the base station controller switching the broadcast control channel data on the first fault transceiver unit to the second transceiver unit comprises: after the base station controller selects the second transceiver unit, to the The first transceiver unit and the second transceiver unit send an occlusion message, and the second transceiver performs a switching command, and after the switching is completed, the base station controller sends a occlusion to the first transceiver unit and the second target transceiver unit. Message.

A broadcast control channel information switching system, comprising a base station controller and a base transceiver station, wherein the base transceiver station comprises a first transceiver unit, wherein

The base station controller is configured to: after determining that the first transceiver unit needs to perform broadcast control channel data switching, the broadcast control channel data on the first transceiver unit is switched to belong to the same cell as the transceiver unit, and is in normal transmission and reception. State of the second transceiver unit.

8. The system of claim 7, wherein

A command is received that manually forces the transceiver unit to perform a broadcast control channel switchover.

9. The system of claim 7, wherein

10. The system of claim 7, wherein

The base station controller is further configured to preferentially select a transceiver unit that does not have a baseband frequency hopping configured as the second transceiver unit.

11. A base station controller comprising a determining unit and a switching unit, wherein:

The determining unit is configured to: trigger the switching unit to be triggered when the first transceiver unit on the base transceiver station needs to perform broadcast control channel data switching; and the switching unit is configured to:: broadcast control channel on the first transceiver unit Data switching And to a second transceiver unit that belongs to the same cell as the first transceiver unit and is in a normal transceiver state.

12. The base station controller according to claim 11, wherein

The determining unit is further configured to determine that the first transceiver unit needs to perform broadcast control channel data switching according to one of the following conditions:

The base station controller according to claim 11, wherein the switching unit is further configured to: in a case of carrier frequency intermixing, preferentially selecting a transceiver unit of the same carrier type as the first transceiver unit as the The second transceiver unit.

The base station controller according to claim 11, wherein the switching unit is further configured to: preferentially select a transceiver unit that does not have a baseband frequency hopping configured as the second transceiver unit.

The base station controller according to claim 11, wherein the determining unit is further configured to determine that the first transceiver unit needs to perform broadcast control channel data switching in the following manner:

After detecting that the first transceiver unit is faulty, the switching timer is started. If the failure of the first transceiver unit is not eliminated when the timing of the switching timer arrives, it is determined that the transceiver unit needs to perform broadcast control channel data switching. .

The base station controller according to any one of claims 11-15, wherein the switching module is configured to:

After selecting the second transceiver unit, sending an occlusion message to the first transceiver unit and the second transceiver unit, and when the second transceiver unit has traffic, transferring the service to another normal After the transmitting and receiving unit of the transmitting and receiving state, the switching command is executed, and after the switching is completed, the unblocking message is sent to the first transceiver unit and the second target transceiver unit.