WO2003063531A1 - Procede de detection d'un circuit terrestre dans un systeme bss - Google Patents

Procede de detection d'un circuit terrestre dans un systeme bss Download PDF

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Publication number
WO2003063531A1
WO2003063531A1 PCT/CN2003/000064 CN0300064W WO03063531A1 WO 2003063531 A1 WO2003063531 A1 WO 2003063531A1 CN 0300064 W CN0300064 W CN 0300064W WO 03063531 A1 WO03063531 A1 WO 03063531A1
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WO
WIPO (PCT)
Prior art keywords
trau
carrier frequency
processing unit
maintenance
baseband processing
Prior art date
Application number
PCT/CN2003/000064
Other languages
English (en)
Chinese (zh)
Inventor
Zhili Xia
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CNB021106363A external-priority patent/CN1167297C/zh
Priority claimed from CN 02100468 external-priority patent/CN1190097C/zh
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2003063531A1 publication Critical patent/WO2003063531A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices

Definitions

  • the invention relates to the technical field of GSM mobile communication systems, in particular to a method for automatically detecting a ground circuit of a base station subsystem (BSS) in a GSM mobile communication system.
  • BSS base station subsystem
  • BSS base station subsystems
  • BSC base station controller
  • the position of the code conversion rate adaptation processor is flexible and can be placed on the BTS side, BSC side, and mobile switching center (MSC) side.
  • MSC mobile switching center
  • ⁇ TRAU Generally placed on the MSC side or the BSC side, so in this case, multiplexing and demultiplexing equipment should be used between the TRAU and the base station controller.
  • the ground connection In order to expand the capacity of the BSS system, the ground connection often adopts a multi-level switching structure, which makes the links of transmission, relay and transfer more complicated.
  • the GSM system is a circuit-switched system, in the ground transmission, the signaling link and the service link are performed by different circuits, and serious transmission occurs in the signaling link or the control and maintenance circuit.
  • the system can still identify it; and when there is a software or hardware problem in the circuit transmission, relay, and transfer of the GSM. Service layer, the system is difficult to identify, causing a serious transmission problem in the ground service circuit, such as : One-way, two-way, noise, some data services cannot communicate normally, etc.
  • the system is still unknown.
  • the transmission, relay, and transfer links of the BSS ground circuit are extremely complicated, it is very inconvenient to find out if there is a problem, especially manual maintenance inspection.
  • the purpose of the present invention is to provide a base station subsystem BSS ground circuit detection method.
  • the ground circuit connection between the carrier frequency baseband time slot processing unit and TRAU is effectively and automatically Detect, quickly detect and locate transmission, relay, and transfer problems on ground circuits.
  • a mobile communication base station subsystem (BSS) ground circuit detection method is characterized in that the method includes at least the following steps:
  • the base station controller connects the uplink and downlink ground circuits between the carrier frequency slot baseband processing unit and the code conversion rate processing unit (TRAU) to be detected, and saves the connection letter. ir ⁇
  • the BSC issues a channel activation or maintenance detection command to the carrier frequency slot baseband processing unit;
  • the carrier frequency slot baseband processing unit After the carrier frequency slot baseband processing unit is activated or receives a maintenance command, it continuously sends normal TRAU frames to the TRAU unit through the uplink ground circuit to perform in-band control on the TRAU unit and start a timer;
  • the TRAU unit is activated in-band or receives the maintenance detection command issued by the BSC through the TRAU downlink maintenance pass, and then sends the corresponding TRAU frame to the carrier frequency slot baseband processing unit through the downlink ground circuit;
  • a mobile communication base station subsystem (BSS) ground circuit detection method is characterized in that the method includes the following steps:
  • the base station controller connects the uplink ground circuit between the carrier frequency slot baseband processing unit and the code conversion rate processing unit (TRAU) to be detected, and saves the connection information of the uplink ground circuit;
  • the BSC issues an activation or maintenance detection command to the carrier frequency slot baseband processing unit through the carrier frequency downlink maintenance channel;
  • the carrier frequency slot baseband processing unit After the carrier frequency slot baseband processing unit receives the maintenance detection command, it continuously sends a normal TRAU frame to the TRAU through the uplink ground circuit;
  • the TRAU unit is activated in-band or receives a BSC downlink maintenance through TRAU to issue a maintenance detection command and starts a timer;
  • TRAU unit Determine whether the TRAU unit receives a TRAU frame before the timer expires, and if it can When a TRAU frame is received, it indicates that the uplink ground circuit is normal. If a TRAU frame cannot be received, it indicates that the uplink ground circuit is abnormal. TRAU reports the detection result to the BSC through the TRAU uplink maintenance channel.
  • a mobile communication base station subsystem (BSS) ground circuit detection method is characterized in that the method includes at least the following steps:
  • the base station controller connects the downlink ground circuit between the carrier frequency slot baseband processing unit and the code conversion rate processing unit (TRAU) to be detected, and saves the connection information;
  • the BSC issues a channel activation or maintenance detection command to the carrier frequency slot baseband processing unit.
  • the TRAU unit After the TRAU unit receives the maintenance detection command, it continuously sends TRAU frames to the carrier frequency time slot baseband processing unit through the downlink ground circuit;
  • the invention can efficiently detect the ground circuit connection problem between the TRAU unit in the BSS system and the baseband processing unit of the base station transceiver carrier frequency time slot, and can accurately locate the uplink ground circuit failure, the downlink ground circuit failure, or the uplink and downlink
  • the ground circuit as a logical overall ground circuit fails, which improves the maintainability of the BSS system, guarantees the service quality of the GSM network, and reduces the risk of human operation.
  • Figure 1 is a schematic diagram of the structure of the BSS system.
  • Figure 2 is a schematic diagram of the detection of the uplink ground circuit and the downlink ground circuit of the BSS system as a whole.
  • Figure 3 is a schematic diagram of the uplink ground circuit detection of the BSS system.
  • FIG. 4 is a schematic diagram of the downlink ground circuit detection of the BSS system. Mode of Carrying Out the Invention
  • the BSS system includes a code conversion rate adaptation processing unit (TRAU) 2, a base station controller (BSC) 3, and a base transceiver station (BTS) 4, and a code conversion rate adaptation process.
  • the unit (TRAU) 2 is the interface of the BSS system facing the mobile switching center (MSG) 1
  • the base transceiver station (BTS) 4 is the wireless-oriented interface of the BSS system.
  • the code conversion rate adaptation processing unit (TRAU) 2 and the switching unit of the base station controller (BSC) 4 are connected through a TRAU maintenance channel 5.
  • the control unit 31 of the base station controller (BSC) 3 and the base transceiver station (BTS) 4 are connected through a carrier frequency maintenance channel 6.
  • the uplink ground circuit 71 Between the carrier frequency slot baseband processing unit 41 of the base transceiver station (BTS) 4 and the corresponding code conversion rate adaptation processing unit (TRAU) 2.
  • the uplink ground circuit 71 covers the ground of most BSS systems Circuit.
  • a base transceiver station (BTS) 4 and a code conversion rate adaptation processing unit (TRAU) 2 are each drawn.
  • the number of base transceiver stations (BTS) 4 is large and widely distributed, and the base transceiver station (BTS) 4 and the base station controller (BSC) 3 often need to pass through optical transmission relay equipment.
  • Code conversion rate adaptation processing unit (TRAU) 2 is numerous, although the code conversion rate adaptation processing unit (TRAU) 2 is maintained and managed by the base station controller (BSC) 3, in order to save transmission resources, the code conversion rate Adaptation processing unit (TRAU) 2 as close as possible On the mobile switching center (MSC) 1 side, the code conversion rate adaptation processing unit (TRAU) 2 and the base station controller (BSC) 3 need to be multiplexed and demultiplexed.
  • FIG. 2 is a schematic diagram of the principle of detecting the uplink ground circuit and the downlink ground circuit of the BSS system as a logical whole.
  • the information between the control unit 31 in the base station controller (BSC) 3 and the carrier frequency slot baseband processing unit 41 in the base transceiver station 4 (BTS) is transmitted through the carrier frequency maintenance channel 6.
  • the carrier frequency maintenance channel is Signalling link or operation and maintenance link; TRAU frames are transmitted between the carrier frequency slot baseband processing unit 41 and the TRAU unit 2 through a ground circuit 7, which is a voice service or a circuit data service channel, covering the BSS System ground circuit;
  • the control unit 31 and TRAU unit 2 in the BSC perform detection using a single ground circuit as a logical unit, and take the uplink ground circuit and the downlink ground circuit as a whole. The results of the test do not include the uplink ground circuit and the downlink ground circuit. Anomalies are distinguished.
  • the detection method of the BSS ground detection circuit is explained as follows:
  • the base station controller connects the uplink ground circuit 71 and the downlink ground circuit 72 between the carrier frequency slot baseband processing unit 41 and the corresponding TRAU unit 2 to be detected, and usually completes the carrier frequency slot baseband processing unit.
  • One-level or multi-level circuit exchange with the corresponding TRAU unit, and save the connection information of related links, where the connection information contains detailed resource occupation information in the carrier frequency slot base station;
  • the control unit 41 of the base station controller issues a channel activation or ground circuit maintenance detection command to the carrier frequency time slot baseband processing unit through the carrier frequency downlink maintenance channel 62;
  • the carrier frequency slot baseband processing unit 41 After the carrier frequency slot baseband processing unit 41 is activated or accepts the maintenance detection command of the ground circuit, it sends the normal TRAU to the TRAU unit 2 through the uplink ground circuit 71 continuously.
  • a frame, the TRAU frame includes a voice service frame, or a data service frame, or an operation and maintenance frame, or a large number of idle bits (BITs) of the operation and maintenance frame carrying a random sequence and a frame sequence number sequence, or the above-mentioned various frames and / or sequences
  • the in-band control is performed on the TRAU unit 2 and a ground circuit detection timer is started.
  • the ground circuit detection timer may be set in the carrier frequency slot baseband processing unit 41;
  • the TRAU unit 2 After the TRAU unit 2 is activated in-band or receives the maintenance detection command of the ground circuit, it sends a corresponding TRAU frame to the carrier frequency slot baseband processing unit 41 through the downlink ground circuit 72;
  • the carrier frequency uplink maintenance channel 61 reports the carrier frequency to the control unit 31 in the BSC.
  • the carrier frequency uplink maintenance channel 61 is used.
  • the control unit 31 in the BSC reports information about the abnormality of the ground circuit between the carrier frequency slot baseband processing unit and the TRAU unit; the control unit 31 in the BSC reports the detection result of the measured ground circuit together with the saved connection information of the related links. Notify maintenance personnel after handling.
  • the time setting of the above ground circuit detection timer should be greater than twice the one-way transmission time of the TRAU frame between the carrier frequency baseband processing unit and the TRAU unit; for the sake of insurance, the time of the ground circuit detection timer can be set to the TRAU frame on-load
  • the one-way transmission time between the frequency slot baseband processing unit and the TRAU unit is more than four times.
  • the thresholds for receiving downlink voice service frames, data service frames, or operation and maintenance frames need to be considered.
  • the one-way transmission time of the TRAU frame between the carrier frequency baseband processing unit and the TRAU unit is approximately 40 to 60 milliseconds, which does not simply mean that the physical transmission time of the TRAU frame between the carrier frequency baseband processing unit and the TRAU unit is 20 milliseconds.
  • This test can be performed in the maintenance state as a function of the ground circuit test of the special BSS system. Style.
  • the BSC traverses all the base station transceiver carrier frequency time slot baseband processing units and all TRAU units under its jurisdiction in a certain way, and can detect most of the ground circuits of the BSS system;
  • some base station transceiver carrier frequency time slot baseband processing units and some TRAU units can be traversed to perform maintenance testing on some BSS ground circuits; or on other networks
  • it is used to specifically detect and locate all or part of the ground circuit of the BSS system.
  • the control unit of the base station controller when the control unit of the base station controller sends the maintenance detection command of the ground circuit to the carrier frequency slot baseband processing unit, it can carry the identification information of the corresponding TRAU unit in the form of command parameters, and the TRAU unit uses the maintenance detection mode. When activated, it can carry the identification information of the TRAU unit in the idle BIT in its downlink operation and maintenance frame.
  • the carrier frequency slot baseband processing unit receives the TRAU, the identification information is used to determine whether it is sent by the TRAU unit corresponding to the detection circuit.
  • the operation and maintenance frame is used to detect whether the connection function of the switching mechanism between the carrier frequency slot baseband processing unit and the TRAU unit is correct.
  • the identification information of the TRAU unit can be issued to the TRAU unit through the base station controller during network data configuration, or the TRAU unit can be automatically identified by the physical configuration location of the device.
  • the detection method of the BSS ground circuit can also be performed during the normal operation of the network. That is, when the carrier frequency slot baseband processing unit is implemented during normal services, such as when the assignment or switching is activated, the above-mentioned ground circuit detection timer is started. If a certain number of response TRAU frames are received by the TRAU unit before the timer expires, It is considered that the corresponding ground circuit is normal. In order not to increase the processing load of the BSC control processing unit, during the network operation, all ground circuits are transmitted normally by default, and no information is reported at this time; otherwise, the corresponding ground circuit is considered to be faulty.
  • the corresponding ground circuit problem is reported to the BSC host, so that if the BSS ground circuit problem occurs during the operation of the network, the BSS system can immediately know which ground circuits are faulty.
  • This function can also be set as a switch in the baseband processing unit of the carrier frequency slot and turned on when necessary. Or off.
  • the detection of the ground circuit in this operating state not only maintains regular monitoring of the ground circuit, but also does not increase the system processing and transmission load. If this scheme is adopted, the time setting of the ground circuit detection timer should be greater than the sum of the round-trip time for transmitting TRAU frames between the baseband processing unit and the TRAU unit of the carrier frequency slot and the lag time between the two.
  • the lag time is Compared to the carrier frequency slot baseband processing unit activation time.
  • the BSS system should provide detailed information of the detected ground circuit as much as possible, such as: Information about the resources occupied in each link; it can also be information about the resources of the transmission, relay, and switching equipment, such as the time slots occupied in each physical link of the Abis interface. The above information is related to the accuracy of the ground circuit positioning detection.
  • This embodiment provides a special detection for the uplink ground circuit of the BSS system when the network is abnormal or when it is considered necessary to perform an inspection. As shown in FIG. 3, the principle diagram of the uplink ground circuit detection of the BSS system is shown.
  • the base station controller (BSC) 3 connects the uplink ground circuit 71, which usually completes one or more levels of circuit switching in the uplink ground circuit 71, and saves connection information of related links.
  • the connection information includes the uplink ground circuit. Resource occupation information in transmission, relay and transfer equipment.
  • the base station controller (BSC) 3 issues an activation or maintenance detection command to the carrier frequency slot baseband processing unit 41 through the carrier frequency downlink maintenance channel 62.
  • TRAU maintenance channel 5 includes TRAU uplink maintenance channel 51 and TRAU downlink maintenance channel 52.
  • the carrier frequency slot baseband processing unit 41 receives the maintenance issued by the base station controller (BSC) 3 After detecting the command, the TRAU frame is continuously sent to the code conversion rate adaptation processing unit (TRAU) 2 through the uplink ground circuit 71, and a large number of idle BITs can be used to carry a random sequence and a frame sequence number sequence for transmission.
  • the above-mentioned TRAU frame can identify the operation maintenance frame and the normal service frame according to the control BIT therein.
  • the code conversion rate adaptation processing unit (TRAU) 2 After receiving the maintenance detection command from the base station controller (BSC) 3, the code conversion rate adaptation processing unit (TRAU) 2 starts the detection timer of the uplink ground circuit 71. Before the timer expires, if it can receive a slave The TRAU frame sent by the frequency slot baseband unit 41 indicates that the uplink ground circuit 71 is normal, and the detection timer is cleared, and the test is ended.
  • the operation and maintenance frames conform to the random sequence and frame sequence number sequence rules of the sender.
  • the code conversion rate adaptation processing unit (TRAU) 2 sends a request to the TRAU uplink maintenance channel 51.
  • the BSC 3 reports the detection result of the uplink ground circuit 71.
  • the connection information of the relevant links of the road is reported to the BSC 3 maintenance station, and the maintenance station will process it.
  • the channel of the maintenance platform and the control processing unit 31 of the BSC 3 is used for displaying the ground circuit detection information, and is not the main body for implementing the ground circuit detection mechanism.
  • the above detection timer is set in the TRAU unit.
  • the base station controller (BSC) 3 traverses the carrier frequency service time slot baseband processing unit 41 and the code conversion rate adaptation processing unit (TRAU) under test under its jurisdiction in a certain manner, and can analyze most of the The uplink ground circuit of the BSS system performs detection. For example, in the case of system expansion and upgrade, data configuration modification, and network ground circuit equipment changes, the new partial carrier frequency time slot unit 41 and the new partial code conversion rate adaptation processing unit (TRAU) are traversed twice to perform Part of the uplink ground circuit of the BSS system for maintenance inspection; or in the case of other network actions or problems found on the ground circuit, used for all or part of the BSS system Perform special inspections on the uplink ground circuit, and locate relevant links where problems occur.
  • the new partial carrier frequency time slot unit 41 and the new partial code conversion rate adaptation processing unit (TRAU) are traversed twice to perform Part of the uplink ground circuit of the BSS system for maintenance inspection; or in the case of other network actions or problems found on the ground circuit, used for all or part of the BSS system
  • the identification information of the corresponding carrier frequency slot baseband processing unit may be carried in the form of command parameters, and the operation of the carrier frequency slot baseband processing unit is sent upward.
  • the idle BIT in the maintenance frame can carry the identification information of the carrier frequency slot baseband processing unit.
  • the identification information of the carrier frequency time slot baseband processing unit can be delivered to the carrier frequency time slot baseband processing unit through the base station controller during network data configuration, or the carrier frequency time slot baseband processing unit can be automatically identified by the physical configuration location of the device.
  • the BSC control mechanism is not required to issue the identification information to the carrier frequency slot baseband processing unit.
  • the generation and detection mechanism of a random BIT sequence and a TRAU frame sequence can be added to detect the uplink ground circuit. Transmission quality problems, including high bit error problems and sliding frame problems.
  • the TRAU frame between the carrier frequency slot baseband processing unit and the code conversion rate adaptation processing unit (TRAU) 2 is unidirectionally transmitted between the carrier frequency baseband slot processing unit 41 and the code conversion rate adaptation processing unit (TRAU) 2
  • the time is about 40 to 60 milliseconds, which does not simply refer to the physical transmission time of the TRAU frame between the code conversion rate adaptation processing unit (TRAU) 2 and the carrier frequency slot baseband processing unit 41.
  • the time period is 20 milliseconds.
  • the time of the uplink ground circuit timer is generally set to be more than twice the unidirectional transmission time of the TRAU frame in the uplink ground circuit 71.
  • the time of the uplink ground circuit timer is set to 80 milliseconds to 120 milliseconds.
  • this method can be used to regularly detect the uplink ground circuit of the BSS system during normal operation.
  • the specific method is as follows: Code conversion rate adaptation processing unit (TRAU) 2
  • the uplink ground circuit detection timer is started at the same time. If a certain number of TRAU frames are received before the timer expires, the corresponding uplink ground circuit is considered normal.
  • the processing load of the control processing unit 31 of the (BSC) 3 may not report information at this time (but there is no such limitation). Then, during the network operation, all ground circuits are transmitted normally by default.
  • the BSS system considers that the corresponding uplink ground circuit is faulty, and reports the corresponding uplink ground circuit problem to the host of the base station controller (BSC) 3. In this way, the BSS system can keep regular monitoring of the uplink ground circuit 71 during network operation.
  • the time of the detection timer is generally set to be more than twice the one-way transmission time of the TRAU frame in the uplink ground circuit 71. In this embodiment, the time of the uplink ground circuit timer is set to 80 milliseconds to 120 milliseconds.
  • a switch can also be set in the code conversion rate adaptation processing unit (TRAU) 2.
  • the control unit of the base station controller (BSC) 3 controls the opening and closing of the detection timer through the TRAU downlink maintenance channel. shut down.
  • This embodiment provides a method for detecting a downlink ground circuit.
  • FIG. 4 is a schematic diagram of a detection method of a downlink ground circuit.
  • the specific detection methods are as follows:
  • the base station controller (BSC) 3 connects the downlink terrestrial circuit 72 between the baseband processing unit and the code conversion rate processing unit (TRAU) 2 of the carrier frequency slot to be detected, which usually completes a stage in the downlink terrestrial circuit 72. Or multi-level circuit switching, and save connection information of related links, and the connection information includes resource occupancy information of the downlink ground circuit in transmission, relay, and switching equipment.
  • BSC base station controller
  • the control unit 31 in the BSC 3 issues a channel activation or A maintenance detection command, and issues a maintenance detection command to the TRAU through the TRAU downlink maintenance channel 52;
  • a downlink ground circuit detection timer After the carrier frequency slot baseband processing unit 41 is activated or receives a maintenance command, it starts.
  • the TRAU unit 2 After the TRAU unit 2 receives the maintenance detection command, it continuously sends TRAU frames to the carrier frequency slot baseband processing unit through the downlink ground circuit 72;
  • the carrier frequency slot baseband processing unit 41 determines whether a TRAU frame is received before the downlink terrestrial circuit 72 detects that the timer expires. If so, the downlink terrestrial circuit between the carrier frequency slot baseband processing unit 41 and the TRAU unit 2 is considered normal. Otherwise, it is considered that the downlink ground circuit 72 is abnormal, and the carrier frequency slot baseband processing unit 41 reports the detection result to the control unit 31 in the BSC 3 through the carrier frequency uplink maintenance channel 61.
  • the downlink ground circuit detection timer is cleared, and the BSC 3 reports the detection result of the measured uplink ground circuit together with the connection information of the processed ground circuit related links to the maintenance station of the BSC 3 for processing by the maintenance station.
  • the channel of the maintenance station and its control processing unit 31 of BSC 3 is used for displaying the ground circuit detection information, and is not the main body of the ground circuit detection mechanism.
  • the time setting of the above ground circuit detection timer should be greater than twice the unidirectional transmission time of the TRAU frame between the carrier frequency baseband processing unit and the TRAU unit.
  • BSC 3 traverses the baseband processing unit 41 of the carrier frequency service slot under test and the TRAU 2 under test under its jurisdiction to detect the ground circuits of most BSS systems.
  • the traversal of the newly added carrier frequency time slot unit 41 and the newly added TRAU 2 can perform maintenance inspection on some downlink ground circuits of the BSS system. ; Or when other network actions occur or a ground circuit problem has been found, it is used to specifically detect all or part of the downlink ground circuit of the BSS system and locate the relevant links where the problem occurs.
  • the control unit of the base station controller sends the maintenance detection command of the downlink ground circuit to the carrier frequency slot baseband processing unit, it can carry the identification information of the corresponding TRAU unit in the form of command parameters.
  • the TRAU unit When the TRAU unit is activated in the maintenance detection mode, it can Operation and maintenance in its downstream
  • the idle BIT in the frame carries the identification information of the TRAU unit.
  • the carrier frequency slot baseband processing unit receives the TRAU, the identification information is used to determine whether it is an operation and maintenance frame sent by the TRAU unit corresponding to the detection circuit. It is used to detect the carrier frequency. Whether the connection function of the switching mechanism between the time slot baseband processing unit and the TRAU unit is correct.
  • the identification information of the TRAU unit can be transmitted to the TRAU unit through the base station controller during network data configuration, or the TRAU unit can be automatically identified by the physical configuration location of the device. At this time, the BSC control mechanism is not required to issue the identification information to the TRAU unit.
  • the generation and detection mechanism of a random BIT sequence and a TRAU frame sequence can be added to detect the uplink ground circuit. Transmission quality problems, including high bit error problems and sliding frame problems.
  • the TRAU unit Since the TRAU unit needs to receive a maintenance detection command or a TRAU frame from a carrier frequency baseband time slot processing unit, it can send a TRAU frame to the carrier frequency baseband time slot processing unit. Therefore, when performing downlink ground circuit detection, generally Testing is not performed during normal operation, but is usually performed during maintenance.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé permettant de détecter un circuit terrestre dans un système BSS. Dans un système de communication mobile cellulaire tel que le GSM, la connexion physique entre une station de base et un contrôleur de station de base est très complexe. A ce jour, il n'existe pas de procédé de détection permettant de déterminer l'efficacité d'une transmission terrestre. Lorsqu'une transmission terrestre est défaillante, des techniciens de maintenance sont nécessaires. Le procédé de la présente invention permet de détecter le statut d'une connexion par transmission d'une trame TRAU à un circuit terrestre entre une unité de traitement en bande de base de la fréquence porteuse et une unité d'adaptation de débit/transcodage situé dans un émetteur-récepteur de station de base. La connexion avec un circuit terrestre de liaison montante peut être localisée plus efficacement et automatiquement, ceci permettant d'améliorer la capacité de maintenance du système BSS.
PCT/CN2003/000064 2002-01-24 2003-01-23 Procede de detection d'un circuit terrestre dans un systeme bss WO2003063531A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CNB021106363A CN1167297C (zh) 2002-01-24 2002-01-24 基站子系统bss中上行地面电路的检测方法
CN02110636.3 2002-01-24
CN 02100468 CN1190097C (zh) 2002-02-01 2002-02-01 移动通信基站子系统地面电路的检测方法
CN02100468.4 2002-02-01

Publications (1)

Publication Number Publication Date
WO2003063531A1 true WO2003063531A1 (fr) 2003-07-31

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720596A1 (de) * 1997-05-16 1998-11-19 Siemens Ag Konfigurationsverfahren für ein Mobilfunksystem und Basisstationssteuereinheit zur Durchführung
CN1262020A (zh) * 1997-07-02 2000-08-02 西门子公司 移动无线电网的运行和维护系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720596A1 (de) * 1997-05-16 1998-11-19 Siemens Ag Konfigurationsverfahren für ein Mobilfunksystem und Basisstationssteuereinheit zur Durchführung
CN1262020A (zh) * 1997-07-02 2000-08-02 西门子公司 移动无线电网的运行和维护系统

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