WO2011003364A1 - 一种lte基站维护方法和设备 - Google Patents

一种lte基站维护方法和设备 Download PDF

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Publication number
WO2011003364A1
WO2011003364A1 PCT/CN2010/075096 CN2010075096W WO2011003364A1 WO 2011003364 A1 WO2011003364 A1 WO 2011003364A1 CN 2010075096 W CN2010075096 W CN 2010075096W WO 2011003364 A1 WO2011003364 A1 WO 2011003364A1
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WO
WIPO (PCT)
Prior art keywords
base station
maintenance device
network maintenance
connection
request message
Prior art date
Application number
PCT/CN2010/075096
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English (en)
French (fr)
Inventor
马卫国
刘兵
唐纪晔
王艳
Original Assignee
大唐移动通信设备有限公司
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
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Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to US13/382,521 priority Critical patent/US9622095B2/en
Priority to EP10796741.6A priority patent/EP2453693B1/en
Publication of WO2011003364A1 publication Critical patent/WO2011003364A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/04Interfaces between hierarchically different network devices
    • H04W92/12Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an LTE base station maintenance method and device. Background technique
  • the base station in the mobile communication system is mainly responsible for implementing various functions related to wireless, and provides an interface for the mobile station (Mobile Station, MS) to access the system, and directly connects with the MS through the wireless resource, and therefore, if in the mobile communication system
  • the base station fails, and the impact on the entire mobile communication system is four.
  • mobile communication is wireless communication, it is actually a combination of wireless and wired.
  • a large amount of data transmission is required between the network side and the base station. If there is a problem with the transmission channel or the data transmission and reception mechanism, problems such as out-of-step, slip code, and dead station will occur.
  • the software in the base station system is to direct and manage the components of the base station in an orderly and normal manner. If the base station IDB data does not match the base station condition, the base station must not work normally.
  • Interference in the mobile communication system also affects the normal operation of the base station, and has the same frequency interference, adjacent frequency interference, and intermodulation interference.
  • terrestrial cellular mobile communication systems use the same frequency reuse technology to improve frequency utilization and increase system capacity, but also introduce various interferences.
  • the new station and the new frequency of the expansion station are selected.
  • the unreasonable base station will not work normally.
  • the fault should be coordinated with the network. Considering various factors, select reasonable frequency points to eliminate the above interference.
  • the embodiments of the present invention provide a method and a device for maintaining an LTE base station, which rely on the characteristics of the LTE access network system and the air interface, and perform a small number of processing flow changes by using such methods or methods to establish a wireless communication link between the network and the NME. Maintenance and acquisition of data information by the NME to the eNB.
  • an embodiment of the present invention provides an LTE base station maintenance method, which is applied to a long-term evolution LTE system including a network maintenance device and a base station, and includes: the base station receiving a connection sent by the network maintenance device. a request message, where the connection request message includes identification information of the network maintenance device;
  • the base station determines whether there is currently an idle resource sufficient to receive the network maintenance device; If the base station determines that there is currently enough idle resources to receive the network maintenance device, the base station establishes a communication connection with the network maintenance device;
  • the base station communicates with the network maintenance device through the communication connection, and performs maintenance on the base station.
  • the base station before receiving the connection request message sent by the network maintenance device, the base station further includes:
  • the base station receives a random access request message sent by the network maintenance device; the base station sends a random access response message to the network maintenance device, and allocates an uplink resource to the network maintenance device.
  • the method further includes:
  • the network maintenance device performs wireless channel measurement
  • the network maintenance device determines that the result of the wireless channel measurement is higher than a preset threshold, the network maintenance device sends a random access request message to the base station.
  • connection request message includes the identifier information of the network maintenance device, specifically:
  • Initial device identifier of the connection request message Initial UE-ID field pseudo-random number value
  • the access reason enumeration value of the connection request message includes an operation and maintenance access identifier.
  • the method further includes:
  • the base station If the base station identifies that the device that sends the connection request message is not a network maintenance device, the base station processes according to an access processing procedure of the normal user equipment;
  • the base station If the base station identifies that the device that sends the connection request message is a network maintenance device, but the base station determines that there is currently insufficient idle resource for the network maintenance device, the base station sends a connection reject message to the network maintenance device. Rejecting the connection request message sent by the network maintenance device.
  • the base station establishes a communication connection with the network maintenance device, specifically: the base station sends a connection establishment message to the network maintenance device by using a common control channel, and establishing the communication connection; Receiving, by the base station, a connection establishment complete message sent by the network maintenance device by using a dedicated control channel, completing establishment of the communication connection;
  • connection reconfiguration message is further configured to configure each protocol layer in the network maintenance device
  • the base station determines that the communication connection is not established with the network maintenance device, the base station processes according to an access processing procedure of the normal user equipment.
  • the method further includes:
  • the base station If the base station receives the connection release request message sent by the network maintenance device, or the base station determines that there are not enough free resources to serve other user equipments, the base station sends a connection release message to the network maintenance device, releasing The communication connection; or, if the base station does not receive the information sent by the network maintenance device within a preset response time, the base station releases the communication connection.
  • the method further includes:
  • the network maintenance device performs wireless channel measurement, and when the network maintenance device determines that the wireless channel measurement result is lower than a preset threshold, the network maintenance device sends a connection release request message to the base station, and receives the a connection release message returned by the base station, releasing the communication connection; or
  • the embodiment of the present invention further provides a base station, which is applied to an LTE system including a network maintenance device and a base station, and includes: a communication module, configured to receive a connection request message sent by the network maintenance device, where the connection request message includes identifier information of the network maintenance device, and is used to communicate with the network maintenance device by using the established communication connection
  • the determining module is configured to be connected to the communication module, configured to identify, according to the identifier information received by the communication module, whether the device that sends the connection request message is a network maintenance device, and identify the When the device is a network maintenance device, it is determined whether there is an idle resource sufficient to receive the network maintenance device.
  • the base station further includes:
  • the embodiment of the present invention further provides a network maintenance device, which is applied to an LTE system including a network maintenance device and a base station, and includes:
  • a communication module configured to send a connection request message to the base station, where the connection request message includes identifier information of the network maintenance device, and receives a message returned by the base station, and is also used to establish a communication connection
  • the base station performs communication, and performs maintenance on the base station;
  • a establishing module configured to be connected to the communication module, configured to establish a communication connection with the base station when the message returned by the base station received by the communication module is a connection establishment message, so that the network maintenance device and the base station perform Communication.
  • connection request message includes the identifier information of the network maintenance device, specifically:
  • the Initial UE-ID field pseudo-random value of the connection request message
  • the access reason enumeration value of the connection request message includes an operation and maintenance access identifier.
  • the network maintenance device further includes:
  • a setting module configured to set a channel quality threshold of a network where the network maintenance device is located
  • a detection module connected to the setting module and the communication module, configured to perform wireless channel measurement on a network where the network maintenance device is located, And detecting whether the recording of the wireless channel measurement is higher than a channel quality threshold set by the setting module
  • the communication module is further configured to: when the detecting module determines that the result of the wireless channel measurement is higher than a channel quality threshold set by the setting module, send a random access request message to the base station.
  • the network maintenance device further includes:
  • the detecting module is further configured to: after the establishing module establishes a communication connection with the base station, continue to perform radio channel measurement on the network where the network maintenance device is located, and detect whether the measurement of the wireless channel measurement is lower than a channel quality threshold set by the setting module; the communication module is further configured to: when the detecting module determines that the result of the wireless channel measurement is lower than a channel quality threshold set by the setting module, send the signal to the base station Connecting a release request message, and receiving a connection release message returned by the base station, releasing the communication connection; or
  • the network maintenance device further includes:
  • the management module is connected to the communication module and the establishing module, and if the communication module does not receive the information sent by the base station within a preset response time, is used to release the communication connection established by the establishing module.
  • the technical solution provided by the embodiment of the present invention has the following advantages: By applying the technical solution proposed by the embodiment of the present invention, the process of acquiring the data information of the base station can be realized, and the network maintenance is reduced. Cost also prevents the damage and impact of human factors on the operation and maintenance of the base station. DRAWINGS
  • FIG. 1 is a schematic diagram of comparison between a network structure and an existing original network structure according to a technical solution of an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for maintaining an LTE base station according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for maintaining an LTE base station in a specific application scenario according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a network maintenance device according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a system architecture of an NME device in an actual application scenario according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a protocol stack and a functional structure of an NME device according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a data communication protocol between an NME and an eNB according to an embodiment of the present invention. detailed description
  • the maintenance work of the base station is a cumbersome and time-consuming task.
  • the staff wants to obtain the data information of the base station and needs to enter the equipment room.
  • the site of the base station is often located in a relatively remote and dangerous place, which is not conducive to The work of the staff, and the security of the base station room is also important, and the entry and exit of the personnel is not conducive to the security of the base station room itself.
  • embodiments of the present invention provide a technical solution and a specific implementation process for performing the above work by using an air interface, which facilitates maintenance and operation of a base station, except
  • the necessary man-made operations can rely on this solution to complete the above work, reducing the need to enter the equipment room, greatly improving work efficiency and machine room security.
  • an embodiment of the present invention provides a device to complete the work, that is, a network maintenance equipment (NME), whose function is equivalent to a special function.
  • the UE wirelessly communicates with the base station to upload or download operation instructions and data information in a customized data format.
  • the NME only occupies idle radio resources, and the priority is lower than the normal service access, which has no impact on the operator's network revenue.
  • FIG. 1 A comparison of the network structure proposed by the technical solution of the embodiment of the present invention with the existing original network structure is shown in FIG. 1.
  • FIG. 2 is a schematic flowchart of a long term evolution (LTE) base station maintenance method according to an embodiment of the present invention. The method is applied to an LTE system including a network maintenance device and a base station, and specifically includes The following steps:
  • Step S201 The base station receives a connection request message sent by the network maintenance device.
  • connection request message includes the identifier information of the network maintenance device, where the identifier information is specifically included in the connection request message by:
  • the initial device identifier (Initial UE- Identity) field of the connection request message is pseudo-random value; the access cause enumeration value of the connection request message includes an operation and maintenance access identifier, and the specific operation and maintenance access identifier can be preset according to requirements. Changes in the form of operation and maintenance access identification do not affect the scope of protection of the present invention.
  • the base station before receiving the connection request message sent by the network maintenance device, the base station further includes:
  • the base station sends a random access response message to the network maintenance device to allocate uplink resources to the network maintenance device.
  • the penalties in this step also require the channel quality detection process of the network maintenance device, including: The network maintenance device performs wireless channel measurement;
  • the network maintenance device determines that the result of the wireless channel measurement is higher than a preset threshold, the network maintenance device sends a random access request message to the base station.
  • Step S202 The base station identifies, according to the identifier information, whether the device that sends the connection request message is a network maintenance device.
  • step S203 is performed;
  • step S206 is performed.
  • Step S203 The base station determines whether there is currently an idle resource sufficient to receive the network maintenance device.
  • step S204 is performed;
  • step S207 is performed.
  • Step S204 The base station establishes a communication connection with the network maintenance device.
  • this step is implemented in the following manner:
  • the base station sends a connection establishment message to the network maintenance device through the common control channel to establish a communication connection.
  • the base station receives the connection establishment completion message sent by the network maintenance device through the dedicated control channel, and completes the establishment of the communication connection.
  • the base station determines whether it is establishing a communication connection with the network maintenance device.
  • the base station determines that the communication connection is established with the network maintenance device, the base station sends a connection reconfiguration message to the network maintenance device to establish a user plane bearer RAB. If the base station determines that the communication connection is not established with the network maintenance device, the base station performs access processing according to the normal user equipment. Process processing.
  • the base station receives the connection reconfiguration complete message sent by the network maintenance device, and completes the establishment of the user plane load.
  • connection reconfiguration message is also used to configure each protocol layer in the network maintenance device.
  • Step S205 The base station communicates with the network maintenance device by using a communication connection, and performs maintenance on the base station.
  • the administrator or the base station maintenance personnel can receive the data information of the base station through the network maintenance device and send a control command to the base station to perform base station maintenance.
  • the process is terminated.
  • the process may be because the administrator or the base station maintenance personnel think that the base station maintenance process is terminated without further maintenance of the base station, or the current system cannot maintain the device for the network.
  • the reason for the provision of sufficient network resources can be divided into the termination process on the base station side and the termination process on the network maintenance device side:
  • Case 1 The maintenance process is terminated according to the network maintenance equipment application.
  • the base station If the base station receives the connection release request message sent by the network maintenance device, the base station sends a connection release message to the network maintenance device to release the communication connection.
  • the base station determines that there are not enough free resources to serve other user equipments, and the base station sends a connection release message to the network maintenance device to release the communication connection.
  • Case 3 The maintenance process is terminated because the network maintenance equipment side is not responding.
  • the base station does not receive the information sent by the network maintenance device within the preset response time, the base station releases the communication connection.
  • Case 1 The maintenance process is terminated due to insufficient current system resources.
  • the network maintenance device performs wireless channel measurement.
  • the network maintenance device determines that the result of the wireless channel measurement is lower than a preset threshold, the network maintenance device sends a connection release request message to the base station, and receives a connection release message returned by the base station, and releases the communication connection.
  • Case 2 The maintenance process is terminated according to the instructions on the base station side.
  • the network maintenance device directly receives the connection release message returned by the base station, and releases the communication connection.
  • Case 3 The maintenance process is terminated because there is no response from the base station side.
  • the network maintenance device does not receive the information returned by the base station within the preset response time, the network maintenance device releases the communication connection.
  • the specific termination process described above does not affect the scope of protection of the present invention.
  • Step S206 The base station processes according to an access processing procedure of the normal user equipment.
  • Step S207 The base station sends a connection reject message to the network maintenance device, and rejects the connection request message sent by the network maintenance device.
  • the base station side confirms the access or presence of the NME by using some identification convention field or identification means, thereby establishing a wireless link or communication with the NME, and performing data through the agreed data format. Transfer, complete the expected data transmission and maintenance work. And to ensure that the above work is completed without affecting the access requirements of normal UEs, and the system maintenance target is achieved.
  • the implementation proposed by the embodiment of the present invention is applicable to various protocol versions of the LTE system, and is applicable to Time Division Duplexing (TDD) and frequency division duplexing.
  • TDD Time Division Duplexing
  • frequency division duplexing frequency division duplexing
  • the network element can be maintained (including, but not limited to, upgrading, uploading control commands, downloading data information of the network element, receiving the abnormality report of the network element, etc.) ), and can provide real-time data information, realize the process of acquiring the data information of the base station, reduce the cost of network maintenance, and prevent the damage and influence of human factors on the operation and maintenance process of the base station.
  • the following describes the specific application scenario.
  • the eNB ie, the base station
  • the RRC Connection Request message RRC Connection Request
  • the initial UE-Identity in the request message uses a random number, and is defined as om-Access (Operation Maintenance Access) by using the spare3 in the enumeration value of the access reason, where om-access is the aforementioned operation and maintenance connection.
  • om-Access Operaation Maintenance Access
  • RRCConnectionRequest-r8-IEs SEQUENCE ⁇
  • the cell and frequency information under the jurisdiction of the target eNB that needs to be maintained are configured to the NME.
  • the NME finds a cell included in the above configuration information to camp by cell search.
  • the NME communicates with a target eNB by the following steps.
  • Step S301 The NME initiates a normal random access procedure.
  • Step S302 The eNB responds to the random access procedure initiated by the NME, and allocates an uplink resource.
  • the uplink resources mentioned in this step are mainly for subsequent communication messages (ie, RRC).
  • Connection Request which is assigned, can refer to CCCH in a specific application scenario.
  • Step S303 The NME sends an RRC Connection Request message to the eNB on the CCCH, and initiates an RRC connection establishment process.
  • Step S304 The base station completes the random access competition resolution.
  • Step S305 The eNB determines, according to the information in the RRC Connection Request message, whether it is a preset configuration information representing the NME, thereby determining whether it is an NME access.
  • step S306 is performed;
  • NME access that is, normal access of other network devices
  • Step S306 The eNB determines whether there is an idle resource currently accepting the access of the NME.
  • step S307 is performed;
  • Step S308 If the eNB determines that the currently available resource accepts the access of the NME, step S308 is performed. Step S307: The eNB sends an RRC Connection Reject message (RRC Connection Reject) to the NME on the CCCH, and denies access to the device.
  • RRC Connection Reject RRC Connection Reject
  • Step S308 The eNB sends an RRC Connection Setup message to the NME on the CCCH, and initiates a communication connection establishment process.
  • Step S309 The NME sends an RRC Connection Setup Complete message to the eNB on the DCCH, and the communication connection establishment is completed.
  • Step S310 After the communication connection is established, the eNB determines whether the establishment of the communication connection is an NME.
  • step S311 If it is not the NME, the communication process is performed according to the normal process, and step S311 is performed; if it is the NME, the RAB is actively established, and step S312 is performed.
  • Step S311 The eNB and the access device perform communication through the communication connection according to the normal processing procedure of the protocol.
  • Step S312 The eNB sends an RRC Connection Reconfiguration message (RRC Connection Reconfiguration) to the NME.
  • the RRC Connection Reconfiguration message is used to reconfigure the communication connection parameter information and coordinate the customized data structure.
  • the RRC Connection Reconfiguration message is also used to configure each protocol layer in the NME.
  • Step S313 The NME sends an RRC Reconfiguration Complete message (RRC Connection Reconfiguration complete) to the eNB.
  • RRC Reconfiguration Complete RRC Connection Reconfiguration complete
  • a communication connection is established between the eNB and the NME, and data communication and control message communication are realized, so that maintenance of the base station by the administrator or the base station maintenance personnel can be realized.
  • Step S315 The eNB receives an RRC Connection Release Request sent by the NME, and requests to release the communication connection.
  • Step S316 The eNB sends an RRC Connection Release message (RRC Connection Release) to the NME, and releases the communication connection.
  • RRC Connection Release RRC Connection Release
  • the above steps S315 and S316 represent the maintenance termination process performed by the NME active application.
  • the NME may apply for maintenance termination.
  • the administrator or the base station maintenance personnel may wish to terminate the maintenance or the NME may determine that the channel quality of the current system is poor. Unable to maintain the quality of the normal maintenance process and hope to terminate the maintenance process.
  • the eNB if the eNB has no idle resources to meet the requirements of other UEs, or because the NOUT signal is out of contact with the network, and the eNB finds that there is no data transmission within a period of time, the eNB can directly perform the above step S316 to release the communication connection.
  • the NME itself can also establish a trigger or termination mechanism for the maintenance process to better avoid the impact of NME access on the current system communication services, including the following:
  • Case 1 The trigger mechanism in the access process.
  • the NME performs radio channel measurement. If the signal quality is found to be poor, the access is not initiated, and the random access is initiated after the signal quality is good.
  • the NME performs radio channel measurement. If the signal quality is found to be poor, the service initiates a request for maintenance termination (for example, sending an Enumerated REQ RRC Connection Release Request message, requesting the eNB to release the RRC connection), and the NME waits for the eNB to respond and execute the RRC command.
  • a request for maintenance termination for example, sending an Enumerated REQ RRC Connection Release Request message, requesting the eNB to release the RRC connection
  • the NME waits for the eNB to respond and execute the RRC command.
  • the NME directly releases the RRC connection.
  • the eNB determines that the communication data is not received within the preset response time or the communication data is too small, the eNB performs RESET according to the protocol, and then performs the above step S316 to release the communication. connection.
  • the NME can also know the network condition by counting BER and BLER. If the NME judges that no communication data is received or the communication data is too small within the preset response time, the resource is released and the re-access is requested.
  • an embodiment of the present invention further provides a base station, as shown in FIG. 4, applied to an LTE system including a network maintenance device and a base station, including:
  • the communication module 41 is configured to receive a connection request message sent by the network maintenance device, where the connection request message includes the identifier information of the network maintenance device, and is used to communicate with the network maintenance device through the established communication connection, and perform maintenance on the base station;
  • the determining module 42 is connected to the communication module 41, and is configured to identify, according to the identification information received by the communication module 41, whether the device that sends the connection request message is a network maintenance device, and when the identification device is a network maintenance device, determine whether there is sufficient admission currently.
  • the network maintains idle resources of the device;
  • the establishing module 43 is connected to the communication module 41 and the determining module 42 for establishing a communication connection with the network maintenance device when the determining module 42 determines that there is sufficient idle resource for the network maintenance device, and the network maintenance device is enabled by the communication module 41.
  • the base station communicates.
  • the base station further includes:
  • the management module 44 is connected to the communication module 41 and the establishing module 43. If the communication module 41 does not receive the information sent by the network maintenance device within the preset response time, or does not currently have enough free resources to serve other user equipment, The communication connection established by the setup module 43 is released.
  • an embodiment of the present invention further provides a network maintenance device, as shown in FIG. Applicable to LTE systems including network maintenance equipment and base stations, including:
  • the communication module 51 is configured to send a connection request message to the base station, where the connection request message includes the identifier information of the network maintenance device, and receives the message returned by the base station, and is also used to communicate with the base station through the established communication connection, and perform the communication on the base station. Maintenance
  • connection request message includes the identifier information of the network maintenance device, which is specifically: a pseudo-random value of the Initial UE-ID field of the connection request message;
  • the access reason enumeration value of the connection request message includes an operation and maintenance access identifier, such as om-Acc6ss described above.
  • the establishing module 52 is connected to the communication module 51, and is configured to establish a communication connection with the base station when the message returned by the base station received by the communication module 51 is a connection establishment message, so that the network maintenance device communicates with the base station.
  • the network maintenance device further includes:
  • the setting module 53 is configured to set a channel quality threshold of the network where the network maintenance device is located;
  • the detecting module 54 is connected to the setting module 53 and the communication module 51 for performing wireless channel measurement on the network where the network maintenance device is located, and detecting whether the recording of the wireless channel measurement is higher than the channel quality threshold set by the setting module 53;
  • the communication module 51 is further configured to send a random access request message to the base station when the detecting module 54 determines that the result of the wireless channel measurement is higher than the channel quality threshold set by the setting module 53.
  • the detecting module 54 is further configured to: after the establishing module 52 establishes a communication connection with the base station, continue to perform wireless channel measurement on the network where the network maintenance device is located, and detect whether the recording of the wireless channel measurement is lower than that set by the setting module 53.
  • Channel quality threshold
  • the communication module 51 is further configured to: when the detecting module 54 determines that the result of the wireless channel measurement is lower than the channel quality threshold set by the setting module 53, send a connection release request message to the base station, and receive a connection release message returned by the base station, and release the communication connection. ; or,
  • the network maintenance device further includes:
  • the management module 55 is connected to the communication module 51 and the establishing module 52. If the communication module 51 does not receive the information sent by the base station within the preset response time, it is used to release the communication connection established by the establishing module 52.
  • the system architecture of the NME device is as shown in FIG. 6, which mainly includes a debug demodulator 61 and a computer 62.
  • the connection between the two is established by USB, Cardbus, network port wired mode or wireless mode such as Bluetooth or wifi.
  • the modem 61 includes main functional modules such as the RF unit 611, the DSP 612, and the MCU 613.
  • the MCU 613 and the DSP 612 jointly implement software protocol functions such as RRC, PDCP, RLC, MAC, and PHY, and the computer 62 implements operation and maintenance functions.
  • the above-mentioned NME device can form a functional structure division as shown in FIG. 7, and the specific description is as follows:
  • RRC Radio link control, the function is basically the same as the protocol.
  • PDCP Same as the L2 protocol stack.
  • PHY Physical layer protocol stack, consistent with the protocol.
  • RF RF unit, function the same as UE. Based on the above protocol layer structure, the data information transmission process in the foregoing step S314 is described as follows:
  • FIG. 8 it is a schematic diagram of a data communication protocol between the NME and the eNB.
  • the functions of the protocol layers such as PDCP, RLC, MAC, and PHY, and the processing flow are consistent with the protocol standards.
  • the application layer is located at the top of the stack of the protocol stack.
  • the structure is defined between the NME and the NB.
  • the configuration of each layer is completed by the inter-layer primitive configuration.
  • the communication interface between the application layer and the PDCP layer is customized. Data interface.
  • the PDCP layer receives the data of the link and sends it to the application layer, the PDCP layer and the RLC layer, the RLC layer and the MAC layer, and the communication interface between the MAC layer and the PHY layer.
  • the standards are consistent, and are sent through the air interface after being processed by each layer.
  • the signal received from the air interface is processed by the RF channel, PHY layer, MAC layer, RLC layer, and PDCP layer. After receiving data from the PDCP layer, the data is obtained through the agreed communication data structure.
  • the configuration is set by the RRC Connection Reconfiguration (RRC Connection Reconfiguration): 3 ⁇ 4.
  • an embodiment of the present invention provides an example of a data format definition of communication between an NME and an eNB, where the structure is used to describe a user data communication structure of downlink data (eNB to NME), and the NME uses this structure to receive each of the eNBs.
  • eNB to NME downlink data
  • the specific instructions are as follows:
  • SRC_IP_ADDR (SIZE 64) Source IP address (IP address of the eNB)
  • REQUEST_DATA_SIZE(SIZE 32) The size of the data field corresponding to the request type (appears in pairs with REQUEST_TYPE)
  • NME The application layer is located at the top of the stack of the protocol stack, and its structure is an agreement between NME and NB.
  • the configuration of each layer is RRC connection reconfiguration message (RRC Connection).
  • Reconfiguration is configured.
  • the interface between the application layer and the PDCP layer is implemented internally.
  • the communication interfaces between the PDCP layer and the RLC layer, the RLC layer and the MAC layer, and between the MAC layer and the PHY layer are consistent with the standard, and finally sent out through the air interface. .
  • Receiving end After the signal received from the air interface is processed by the radio channel, the PHY layer, the MAC layer, the RLC layer, and the PDCP layer, according to the configuration of establishing the link, the data is sent to the application layer, and the application layer receives the data through the contract.
  • the communication data structure gets the data information.
  • an embodiment of the present invention provides an example of a data format definition of communication between an NME and an eNB, where the structure is used to describe a user data communication structure of uplink data (NME to eNB), and the eNB uses this structure to receive each NME.
  • the specific instructions are as follows:
  • SRC_IP_ADDR (SIZE 64) Source IP address (IP address of NME)
  • DEST_IP_ADDR(SIZE 64) Destination IP address (IP address of the eNB that resides) CELL_ID(SIZE 8) Cell ID (Cell ID of the resident eNB)
  • CELL_FREQUENCE(SIZE 8) Cell frequency (frequency of resident eNB) TIME(SIZE 32) HH/MM/SS/SYS/SUB (point of time when this message is sent) REQUEST_DATA_SIZE(SIZE 32) Request data is large 'J,
  • the process of acquiring the data information of the base station can be implemented, the cost of network maintenance is reduced, and the damage and influence of human factors on the operation and maintenance process of the base station are also prevented.
  • the present invention can be implemented by hardware, and can also add the necessary general hardware platform by software.
  • the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (may be
  • a CD-ROM, a USB flash drive, a removable hard disk, etc. includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.
  • modules in the apparatus in the implementation scenario may be distributed in the apparatus for implementing the scenario according to the implementation scenario description, or may be correspondingly changed in one or more devices different from the implementation scenario.
  • the modules of the above implementation scenarios may be combined into one module, or may be further split into multiple sub-modules.

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Abstract

本发明实施例公开了一种LTE基站维护方法和设备,依赖于LTE接入网系统和空中接口特性,通过此类方式或方法的做少量处理流程变更,网络维护设备与基站建立无线通信链路,实现对基站的维护和数据通信。通过应用本发明实施例所提出的技术方案,实现通过无线的方式对基站进行维护和数据通信,降低了网络维护的成本,也防止了人为因素对基站运行和维护过程的破坏和影响。

Description

一种 LTE基站维护方法和设备 本申请要求于 2009 年 7 月 10 日提交中国专利局, 申请号为 200910088186.X, 发明名称为 "一种 LTE基站维护方法和设备" 的中国 专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域, 特别涉及一种 LTE基站维护方法和设备。 背景技术
移动通信系统中的基站主要负责与无线有关的各种功能的实现, 为 移动台 ( Mobile Station, MS )提供接入系统的接口, 直接和 MS通过无 线资源进行连接, 因此, 如果移动通信系统中的基站发生故障, 对整个 移动通信系统的影响是 4艮大的。
引起基站故障的原因很多, 但大多可归为以下四类:
一、 因传输问题引起的故障
移动通信虽属于无线通信, 但其实际为无线与有线的结合体。 网络 侧与基站之间需要进行大量的数据传输, 如果传输通道或数据收发机制 出现问题, 将会带来诸如失步、 滑码、 死站等问题。
二、 因基站软件问题引起的故障
基站系统中的软件是指挥和管理基站各部件有序, 正常工作的。 若 基站 IDB数据与基站情况不匹配, 则基站一定无法正常工作。
三、 因基站硬件引起的故障
此类故障较常见, 现象也较明显, 一般有故障的硬件其红色故障灯 会点亮, 但有时不能被表面假象所迷惑。
四、 因各种干扰引起的故障
移动通信系统中的干扰也会影响基站的正常工作, 有同频干扰, 邻 频干扰, 互调干扰等。 现在陆地蜂窝移动通信系统采用同频复用技术来 提高频率利用率, 增加系统容量, 但同时也引入了各种干扰。 日常维护中新建站以及扩容站新加载频的频点选取不合理基站将无 法正常工作, 对此类故障应与网络配合, 综合考虑各种因素, 选取合理 频点, 消除以上干扰。
由于存在上述的多种故障的可能性, 需要对基站的数据加以分析, 才能确定具体的故障种类, 因此, 在基站维护过程中, 基站数据的获取 变得十分重要。
在现有的基站数据获取方案中, 无论是设备商还是运营商, 所有的 工作人员获取基站的内部数据, 都需要上站进行抓取, 通过有线的方案 在机房的监视终端或远程登陆等方法与板卡之间通信以获取基站数据。
在实现本发明的过程中, 发明人发现现有技术至少存在以下问题: 现有的技术方案中大量通过上站方式所进行的数据采集, 需要大量 的人为操作, 一方面增大了人力成本投入, 另一方面也增加了人为误操 作的可能性, 即使是远程获取方式, 也需要提前布线, 工程成本高昂, 并且后续维护工作难度大。 发明内容
本发明实施例提供一种 LTE基站维护方法和设备,依赖于 LTE接入网 系统和空中接口特性, 通过此类方式或方法的做少量处理流程变更, 建 立网络与 NME的无线通信链路来实现通过 NME对 eNB的维护和获取数据 信息。
为达到上述目的, 本发明实施例一方面提供了一种 LTE基站维护方 法, 应用于包括网络维护设备和基站的长期演进 LTE系统中, 包括: 所述基站接收到所述网络维护设备发送的连接请求消息, 其中, 所 述连接请求消息中包含所述网络维护设备的标识信息;
所述基站根据所述标识信息识别所述发送连接请求消息的设备是否 为网络维护设备;
如果所述基站识别所述发送连接请求消息的设备是网络维护设备, 所述基站判断当前是否存在足够接纳所述网络维护设备的空闲资源; 如果所述基站判断当前存在足够接纳所述网络维护设备的空闲资 源, 所述基站与所述网络维护设备建立通信连接;
所述基站通过所述通信连接与所述网络维护设备进行通信, 对所述 基站进行维护。
优选的, 所述基站接收到所述网络维护设备发送的连接请求消息之 前, 还包括:
所述基站接收所述网络维护设备发送的随机接入请求消息; 所述基站向所述网络维护设备发送随机接入响应消息, 为所述网络 维护设备分配上行资源。
优选的, 所述方法还包括:
所述网络维护设备进行无线信道测量;
当所述网络维护设备判断所述无线信道测量的结果高于预设阈值 时, 所述网络维护设备向所述基站发送随机接入请求消息。
优选的, 所述连接请求消息中包含所述网络维护设备的标识信息, 具体为:
所述连接请求消息的初始设备标识 Initial UE- Identity字段伪随机数 值;
所述连接请求消息的接入原因枚举值中包含操作维护接入标识。 优选的, 所述方法还包括:
如果所述基站识别所述发送连接请求消息的设备不是网络维护设 备, 所述基站按照正常用户设备的接入处理流程处理;
如果所述基站识别所述发送连接请求消息的设备是网络维护设备, 但所述基站判断当前不存在足够接纳所述网络维护设备的空闲资源, 所 述基站向所述网络维护设备发送连接拒绝消息, 拒绝所述网络维护设备 发送的连接请求消息。
优选的, 所述基站与所述网络维护设备建立通信连接, 具体为: 所述基站通过公共控制信道向所述网络维护设备发送连接建立消 息, 建立所述通信连接; 所述基站接收所述网络维护设备通过专用控制信道发送的连接建立 完成消息, 完成所述通信连接的建立;
所述基站判断是否是与所述网络维护设备建立所述通信连接; 如果所述基站判断是与所述网络维护设备建立所述通信连接, 所述 基站向所述网络维护设备发送连接重配置消息, 建立用户平面承载 RAB; 所述基站接收所述网络维护设备发送的连接重配置完成消息, 完成 所述用户平面承载的建立。
优选的, 所述连接重配置消息, 还用于配置所述网络维护设备中的 各个协议层;
如果所述基站判断不是与所述网络维护设备建立所述通信连接, 所 述基站按照正常用户设备的接入处理流程处理。
优选的, 所述方法还包括:
如果所述基站接收到所述网络维护设备发送的连接释放请求消息, 或所述基站判断当前没有足够的空闲资源为其他用户设备服务, 所述基 站向所述网络维护设备发送连接释放消息, 释放所述通信连接; 或, 如果所述基站在预设的响应时间内没有接收到所述网络维护设备发 送的信息, 所述基站释放所述通信连接。
优选的, 所述方法还包括:
所述网络维护设备进行无线信道测量, 当所述网络维护设备判断所 述无线信道测量的结果低于预设阈值时, 所述网络维护设备向所述基站 发送连接释放请求消息, 并接收所述基站返回的连接释放消息, 释放所 述通信连接; 或,
所述网络维护设备直接接收所述基站返回的连接释放消息, 释放所 述通信连接; 或,
如果所述网络维护设备在预设的响应时间内没有接收到所述基站返 回的信息, 所述网络维护设备释放所述通信连接。 另一方面, 本发明实施例还提供了一种基站, 应用于包括网络维护 设备和基站的 LTE系统中, 包括: 通信模块, 用于接收所述网络维护设备发送的连接请求消息, 其中, 所述连接请求消息中包含所述网络维护设备的标识信息, 并用于通过建 立的通信连接与所述网络维护设备进行通信, 对所述基站进行维护; 判断模块, 与所述通信模块连接, 用于根据所述通信模块所接收的 标识信息识别所述发送连接请求消息的设备是否为网络维护设备, 并在 识别所述设备是网络维护设备时, 判断当前是否存在足够接纳所述网络 维护设备的空闲资源;
建立模块, 与所述通信模块和所述判断模块连接, 用于在所述判断 模块判断当前存在足够接纳所述网络维护设备的空闲资源时, 与所述网 络维护设备建立通信连接, 使所述网络维护设备与所述基站进行通信。
优选的, 所述基站还包括:
管理模块, 与所述通信模块和所述建立模块连接, 如果所述通信模 块在预设的响应时间内没有接收到所述网络维护设备发送的信息, 或当 前没有足够的空闲资源为其他用户设备服务, 用于释放所述建立模块所 建立的通信连接。 另一方面, 本发明实施例还提供了一种网络维护设备, 应用于包括 网络维护设备和基站的 LTE系统中, 包括:
通信模块, 用于向所述基站发送连接请求消息, 其中, 所述连接请 求消息中包含所述网络维护设备的标识信息, 并接收所述基站返回的消 息, 还用于通过建立的通信连接与所述基站进行通信, 对所述基站进行 维护;
建立模块, 与所述通信模块连接, 用于当所述通信模块接收的所述 基站返回的消息为连接建立消息时, 与所述基站建立通信连接, 使所述 网络维护设备与所述基站进行通信。
优选的, 所述连接请求消息中包含所述网络维护设备的标识信息, 具体为:
所述连接请求消息的 Initial UE- Identity字段伪随机数值;
所述连接请求消息的接入原因枚举值中包含操作维护接入标识。 优选的, 所述网络维护设备还包括:
设置模块, 用于设置所述网络维护设备所在的网络的信道质量阈值; 检测模块, 与所述设置模块和所述通信模块连接, 用于对所述网络 维护设备所在的网络进行无线信道测量, 并检测所述无线信道测量的记 过是否高于所述设置模块所设置的信道质量阈值;
所述通信模块, 还用于当所述检测模块判断所述无线信道测量的结 果高于所述设置模块所设置的信道质量阈值时, 向所述基站发送随机接 入请求消息。
优选的, 所述网络维护设备还包括:
所述检测模块, 还用于在所述建立模块与所述基站建立通信连接之 后, 继续对所述网络维护设备所在的网络进行无线信道测量, 并检测所 述无线信道测量的记过是否低于所述设置模块所设置的信道质量阈值; 所述通信模块, 还用于当所述检测模块判断所述无线信道测量的结 果低于所述设置模块所设置的信道质量阈值时, 向所述基站发送连接释 放请求消息, 并接收所述基站返回的连接释放消息, 释放所述通信连接; 或,
优选的, 所述网络维护设备, 还包括:
管理模块, 与所述通信模块和所述建立模块连接, 如果所述通信模 块在预设的响应时间内没有接收到所述基站发送的信息, 用于释放所述 建立模块所建立的通信连接。
与现有技术相比, 本发明实施例所提出的技术方案具有以下优点: 通过应用本发明实施例所提出的技术方案, 可以实现对基站数据信 息的获取流程的筒化, 降低了网络维护的成本, 也防止了人为因素对基 站运行和维护过程的破坏和影响。 附图说明
对实施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见 地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技 术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获 得其他的附图。
图 1 为本发明实施例的技术方案所提出的网络结构与现有的原始网 络结构的对比示意图;
图 2为本发明实施例的一个实施例所提出的一种 LTE基站维护方法 的流程示意图;
图 3为本发明实施例的一个实施例所提出的具体应用场景中的 LTE 基站维护方法的流程示意图;
图 4为本发明实施例的一个实施例所提出的一种基站的结构示意图; 图 5 为本发明实施例的一个实施例所提出的一种网络维护设备的结 构示意图;
图 6 为本发明实施例的一个实施例所提出的在实际的应用场景中 NME设备的系统架构示意图;
图 7为本发明实施例的一个实施例所提出的一种 NME设备的协议栈 和功能结构示意图;
图 8为本发明实施例的一个实施例所提出的 NME与 eNB之间数据 通信协议示意图。 具体实施方式
如背景技术所述, 基站维护工作是一项比较麻烦且耗费时间的工作, 工作人员想获取基站数据信息都需要进入机房, 而往往基站的站址都是 位于比较偏僻和危险的地方, 不利于工作人员工作, 并且, 基站机房的 安全性也同样重要, 人员进出站点不利于基站机房本身的安全。
为了解决以上困扰, 本发明的实施例提出一种利用空中接口来完成 以上工作的技术方案以及具体实现过程, 方便了基站的维护和操作, 除 必要的人为操作以外(例如: 更换硬件等), 均可以依靠此解决方案完成 上述工作, 减少了进入机房的需要, 大大提高工作效率和机房安全性。
另外, 即使是远程登陆的方式访问机房, 也需要布线, 增加运营商 成本且同样有安全隐患。 为了使运营商获取即时数据, 为设备商提供更 有价值的数据信息,为网络规划 /优化和维护人员提供实时的网络状态等。
为详细解释本发明实施例的技术方案的细节, 本发明的实施例提出 了一种设备来完成此工作, 即网络维护设备 ( Network Maintenance Equipment, NME ), 其功能相当于一种具有特殊功能的 UE, 以无线方式 和基站通信, 以自定义的数据格式上传或下载操作指令和数据信息。 而 且, NME仅占用空闲的无线资源, 优先级低于正常的业务接入, 对运营 商的网络营收没有任何影响。 本发明实施例的技术方案所提出的网络结 构与现有的原始网络结构的对比如图 1所示。
如图 2所示, 为本发明的实施例所提出的一种长期演进(Long Term Evolution , LTE )基站维护方法的流程示意图, 该方法应用于包括网络维 护设备和基站的 LTE系统中, 具体包括以下步骤:
步骤 S201、 基站接收到网络维护设备发送的连接请求消息。
其中, 连接请求消息中包含网络维护设备的标识信息, 该标识信息, 具体通过以下方式包含于连接请求消息中:
连接请求消息的初始设备标识( Initial UE- Identity )字段伪随机数值; 连接请求消息的接入原因枚举值中包含操作维护接入标识, 具体的 操作维护接入标识可以根据需要预先设定, 操作维护接入标识形式的变 化并不影响本发明的保护范围。
具体的, 基站接收到网络维护设备发送的连接请求消息之前, 还包 括:
基站接收网络维护设备发送的随机接入请求消息;
基站向网络维护设备发送随机接入响应消息, 为网络维护设备分配 上行资源。
在具体的应用场景中, 本步骤的处罚还需要网络维护设备的信道质 量检测流程, 具体包括: 网络维护设备进行无线信道测量;
当网络维护设备判断无线信道测量的结果高于预设阈值时, 网络维 护设备向基站发送随机接入请求消息。
步骤 S202、 基站根据标识信息识别发送连接请求消息的设备是否为 网络维护设备。
如果基站识别发送连接请求消息的设备是网络维护设备, 执行步骤 S203;
如果基站识别发送连接请求消息的设备不是网络维护设备, 执行步 骤 S206。
步骤 S203、 基站判断当前是否存在足够接纳网络维护设备的空闲资 源。
如果基站判断当前存在足够接纳网络维护设备的空闲资源, 执行步 骤 S204;
如果基站判断当前没有足够接纳网络维护设备的空闲资源, 执行步 骤 S207。
步骤 S204、 基站与网络维护设备建立通信连接。
在具体的应用场景中, 本步骤通过以下方式实现:
基站通过公共控制信道向网络维护设备发送连接建立消息, 建立通 信连接。
基站接收网络维护设备通过专用控制信道发送的连接建立完成消 息, 完成通信连接的建立。
基站判断是否是与网络维护设备建立通信连接。
如果基站判断是与网络维护设备建立通信连接, 基站向网络维护设 备发送连接重配置消息, 建立用户平面承载 RAB; 如果基站判断不是与 网络维护设备建立通信连接, 基站按照正常用户设备的接入处理流程处 理。
基站接收网络维护设备发送的连接重配置完成消息, 完成用户平面 载的建立。
其中, 连接重配置消息, 还用于配置网络维护设备中的各个协议层。 步骤 S205、 基站通过通信连接与网络维护设备进行通信, 对基站进 行维护。
通过本步骤, 管理员或基站维护人员可以通过网络维护设备接收基 站的数据信息并向基站发送控制指令, 进行基站维护。
在本步骤执行的过程中, 还包括终止流程, 这样的流程可以是由于 管理员或基站维护人员认为判断无需继续基站维护而终止上述的基站维 护流程, 也可以是由于当前系统不能为网络维护设备提供充足的网络资 源等原因导致的, 具体可以分为基站侧的终止流程和网络维护设备侧的 终止流程:
对于基站侧的终止流程, 包括以下两种情况:
情况一、 根据网络维护设备申请而终止维护流程。
如果基站接收到网络维护设备发送的连接释放请求消息, 基站向网 络维护设备发送连接释放消息, 释放通信连接。
情况二、 由于资源紧张而终止维护流程。
基站判断当前没有足够的空闲资源为其他用户设备服务, 基站向网 络维护设备发送连接释放消息, 释放通信连接
情况三、 由于网络维护设备侧无响应而终止维护流程。
如果基站在预设的响应时间内没有接收到网络维护设备发送的信 息, 基站释放通信连接。
对于网络维护设备侧的终止流程, 包括以下三种情况:
情况一、 由于当前系统资源不足而终止维护流程。
网络维护设备进行无线信道测量, 当网络维护设备判断无线信道测 量的结果低于预设阈值时, 网络维护设备向基站发送连接释放请求消息 , 并接收基站返回的连接释放消息, 释放通信连接。
情况二、 根据基站侧的指示而终止维护流程。
网络维护设备直接接收基站返回的连接释放消息, 释放通信连接。 情况三、 由于基站侧无响应而终止维护流程。
如果网络维护设备在预设的响应时间内没有接收到基站返回的信 息, 网络维护设备释放通信连接。 在具体的应用场景中, 具体应用上述哪种终止流程并不影响本发明 的保护范围。
步骤 S206、 基站按照正常用户设备的接入处理流程处理。
步骤 S207、 基站向网络维护设备发送连接拒绝消息, 拒绝网络维护 设备发送的连接请求消息。
通过应用本发明实施例的技术方案, 以某种标识约定字段或标识手 段使得基站侧确认 NME的接入或存在, 从而建立与 NME通信的无线链路 或通信, 并通过约定的数据格式进行数据传输, 完成预想的数据传输和 维护工作。 并保证在不影响正常 UE的接入需求情况下完成上述工作, 达 到系统维护目标。
本发明的实施例所提出的实现方案适用于各种协议版本的 LTE系统, 并适用于时分双工 (Time Division Duplexing, TDD )和频分双工
( Frequency Division Duplexing , FDD ) 的 LTE系统。
通过应用本发明实施例的技术方案, 只要维护人员在小区覆盖范围 内, 即可维护网元(包括且不限于升级、 上传控制指令、 下载网元的数 据信息、 收到网元异常报告等操作), 并可以提供实时的数据信息, 实现 对基站数据信息的获取流程的筒化, 降低了网络维护的成本, 也防止了 人为因素对基站运行和维护过程的破坏和影响。 为了进一步说明本发明技术方案的实现流程, 下面结合具体的应用 场景进行说明。
为了实现 eNB (即基站 )正确识别接入网络设备是 NME, 并保证与 现有的通信协议的兼容性, NME发起建立 RRC 连接请求时, RRC连接 请求消息 ( RRC Connection Request ), 即上述的连接请求消息中 Initial UE-Identity使用随机数, 利用接入原因的枚举值( Establishment Cause ) 中的 spare3 , 定义为 om- Access ( Operation Maintenance Access ), 其中, om- Access即为前述的操作维护接入标识在具体的应用场景中的一种示 例, 具体形式的变化并不影响本发明的保护范围。
更新 RRC Connection Request message结构如下: RRCConnectionRequest messagi
- ASNISTART RRCConnectionRequest:: = SEQUENCE {
criticalExtensions CHOICE {
rrcConnectionRequest-r8 RRCConnectionRequest-r8-IEs , criticalExtensionsFuture SEQUENCE { } }
RRCConnectionRequest-r8-IEs: = SEQUENCE {
ue-Identity InitialUE-Identity ,
establishmentCause EstablishmentCause ,
spare BIT STRING (SIZE (1))
InitialUE-Identity:: = CHOICE {
s-TMSI S-TMSI,
random Value BIT STRING (SIZE (40》
EstablishmentCause:: = ENUMERATED {
emergency , highPriority Access , mt- Access , mo-Signalling,
mo-Data, om- Access, spare2 , spare 1
- ASNISTOP 在具体的实现过程中, 首先,将需要维护的目标 eNB管辖的小区及频 点信息配置给 NME。
NME通过小区搜索, 找到上述配置信息中所包含的一个小区进行驻 留。
如图 3所示, 为具体应用场景中的 LTE基站维护方法的流程示意图, NME通过以下步骤与目标 eNB通信。
步骤 S301、 NME发起正常的随机接入过程。
步骤 S302、 eNB对 NME发起的随机接入过程做出响应, 并分配上行 资源。
本步骤中所提及的上行资源主要是为后续通信消息 (即 RRC
Connection Request ) 而分配的, 在具体的应用场景中, 可以指 CCCH。
步骤 S303、 NME在 CCCH上向 eNB发送 RRC Connection Request消息, 发起 RRC连接建立过程。
步骤 S304、 基站完成随机接入竟争解决。
步骤 S305、 eNB根据 RRC Connection Request消息中的信息判断是否 是预设的代表 NME的配置信息, 从而确定是否为 NME接入。
如果判断是 NME接入, 则执行步骤 S306;
如果判断不是 NME接入, 即是其他网络设备的正常接入, 按照正常 流程处理。
步骤 S306、 eNB判断当前是否有空闲的资源接纳 NME的接入。
如果 eNB判断当前没有空闲的资源接纳 NME的接入, 则执行步骤 S307;
如果 eNB判断当前有空闲的资源接纳 NME的接入,则执行步骤 S308。 步骤 S307、 eNB在 CCCH上发送 RRC连接拒绝消息( RRC Connection Reject )给 NME, 拒绝该设备的接入。
步骤 S308、 eNB在 CCCH上发送 RRC Connection Setup 消息给 NME, 发起通信连接建立流程。 步骤 S309、 NME在 DCCH上发送 RRC Connection Setup Complete 消 息给 eNB, 通信连接建立完成。
步骤 S310、 在通信连接建立完成后, eNB判断建立通信连接的是否 是 NME。
如果不是 NME, 则按照正常流程进行通信处理, 执行步骤 S311 ; 如果是 NME, 则主动建立 RAB, 执行步骤 S312。
步骤 S311、 eNB与接入设备按照协议正常处理流程,通过通信连接进 行通信。
步骤 S312、 eNB向 NME发送 RRC连接重配置消息 ( RRC Connection Reconfiguration )。
RRC Connection Reconfiguration消息用于进行通信连接参数信息的 重配置, 并可以协调自定义的数据结构。
其中, RRC Connection Reconfiguration消息,还用于配置 NME中的各 个协议层。
步骤 S313、 NME向 eNB发送 RRC重配置完成消息 ( RRC Connection Reconfiguration complete )。 具体的数据结构说明将结合 NME的结构构成在后续的实施例中进行 说明, 在此不再重复叙述。
到此为止, eNB和 NME之间建立了通信连接, 实现了数据信息和控 制消息的通信, 从而可以实现管理员或基站维护人员对基站的维护。
步骤 S315、 eNB收到 NME发送的 RRC连接释放消息( RRC Connection Release Request ), 请求释放通信连接。
步骤 S316、 eNB向 NME发送 RRC连接释放消息 ( RRC Connection Release ), 释放通信连接。
上述的步骤 S315和步骤 S316代表的是由于 NME主动申请而进行的维 护终止流程, NME之所以主动申请维护终止可能是管理员或基站维护人 员希望终止维护或 NME判断当前系统的信道质量不佳, 无法维持正常的 维护流程质量, 希望终止维护流程。 不仅如此, 如果 eNB没有空闲资源满足其它 UE的需求, 或由于空口 的信号不好 NME与网络失去联系, eNB在一段时间内发现没有数据传输, eNB都可以直接执行上述步骤 S316, 释放通信连接。
这里需要指出的是。 NME自身还可以建立维护过程的触发或终止机 制, 以便更好的避免 NME接入对当前系统通信服务的影响, 具体包括以 下几种情况:
情况一、 接入过程中的触发机制。
NME进行无线信道测量,如果发现信号质量比较差,则不发起接入, 待信号质量好再发起随机接入.
情况二、 数据通信过程中的维护终止机制
NME进行无线信道测量, 如发现信号质量比较差, 则主动发起维护 终止的请求 (例^口,发送 Enumerated REQ RRC Connection Release Request 消息, 请求 eNB释放 RRC连接), NME等待 eNB回应并执行 RRC命令。
在实际的应用场景中, 如业务面是 AM模式, 且收到业务面的 ARQ回 应传输失败, 或业务面是 UM/TM模式, 但一段时间未收到数据, NME则 直接释放 RRC连接。
不仅如此, 结合上述的 eNB侧的维护终止机制, 如果 eNB判断在预设 的响应时间内没有收到通信数据或通信数据过少,则 eNB会按照协议会执 行 RESET, 然后执行上述步骤 S316释放通信连接。 同样, NME也可以通 过统计 BER和 BLER等知道网络情况,如果 NME判断在预设的响应时间内 没有收到通信数据或通信数据过少, 则释放资源, 并请求重新接入。
通过应用本发明实施例的技术方案, 实现对基站数据信息的获取流 程的筒化, 降低了网络维护的成本, 也防止了人为因素对基站运行和维 护过程的破坏和影响。 为了实现上述的方法, 本发明的实施例还提供了一种基站, 如图 4所 示, 应用于包括网络维护设备和基站的 LTE系统中, 包括: 通信模块 41 , 用于接收网络维护设备发送的连接请求消息, 其中, 连接请求消息中包含网络维护设备的标识信息, 并用于通过建立的通信 连接与网络维护设备进行通信, 对基站进行维护;
判断模块 42, 与通信模块 41连接, 用于根据通信模块 41所接收的标 识信息识别发送连接请求消息的设备是否为网络维护设备, 并在识别设 备是网络维护设备时, 判断当前是否存在足够接纳网络维护设备的空闲 资源;
建立模块 43 , 与通信模块 41和判断模块 42连接, 用于在判断模块 42 判断当前存在足够接纳网络维护设备的空闲资源时, 与网络维护设备建 立通信连接, 通过通信模块 41使网络维护设备与基站进行通信。
在具体的应用场景中, 基站还包括:
管理模块 44, 与通信模块 41和建立模块 43连接, 如果通信模块 41在 预设的响应时间内没有接收到网络维护设备发送的信息, 或当前没有足 够的空闲资源为其他用户设备服务, 用于释放建立模块 43所建立的通信 连接。
另一方面,本发明的实施例还提供了一种网络维护设备,如图 5所示。 应用于包括网络维护设备和基站的 LTE系统中, 包括:
通信模块 51 , 用于向基站发送连接请求消息, 其中, 连接请求消息 中包含网络维护设备的标识信息, 并接收基站返回的消息, 还用于通过 建立的通信连接与基站进行通信, 对基站进行维护;
其中, 连接请求消息中包含网络维护设备的标识信息, 具体为: 连接请求消息的 Initial UE- Identity字段伪随机数值;
连接请求消息的接入原因枚举值中包含操作维护接入标识, 例如前 述的 om-Acc6ss。
建立模块 52, 与通信模块 51连接, 用于当通信模块 51接收的基站返 回的消息为连接建立消息时, 与基站建立通信连接, 使网络维护设备与 基站进行通信。
在具体的应用场景中, 网络维护设备还包括:
设置模块 53 , 用于设置网络维护设备所在的网络的信道质量阈值; 检测模块 54, 与设置模块 53和通信模块 51连接, 用于对网络维护设 备所在的网络进行无线信道测量, 并检测无线信道测量的记过是否高于 设置模块 53所设置的信道质量阈值;
通信模块 51 , 还用于当检测模块 54判断无线信道测量的结果高于设 置模块 53所设置的信道质量阈值时, 向基站发送随机接入请求消息。
优选的, 检测模块 54, 还用于在建立模块 52与基站建立通信连接之 后, 继续对网络维护设备所在的网络进行无线信道测量, 并检测无线信 道测量的记过是否低于设置模块 53所设置的信道质量阈值;
通信模块 51 , 还用于当检测模块 54判断无线信道测量的结果低于设 置模块 53所设置的信道质量阈值时, 向基站发送连接释放请求消息, 并 接收基站返回的连接释放消息, 释放通信连接; 或,
优选的, 网络维护设备还包括:
管理模块 55 , 与通信模块 51和建立模块 52连接, 如果通信模块 51在 预设的响应时间内没有接收到基站发送的信息, 用于释放建立模块 52所 建立的通信连接。
在实际的应用场景中, NME设备的系统架构如图 6所示, 主要包括 调试解调器 61和计算机 62。 两者之间通过 USB、 Cardbus, 网口有线方式 或者蓝牙、 wifi等无线方式建立连接。
调制解调器 61包括 RF单元 611、 DSP612及 MCU613等主要功能模块, MCU613与 DSP612共同实现 RRC、 PDCP、 RLC、 MAC, PHY等软件协议 功能, 计算机 62实现操作维护功能。
根据协议层, 上述的 NME设备可以形成如图 7所示的功能结构划分, 具体说明如下:
Application (应用层): 用于处理应用层的数据及 NME的内部维护, 相当于上述的计算机 62。
RRC: 无线链路控制, 功能同协议基本一致。
PDCP、 RLC、 MAC: 同 L2协议栈功能一致。
PHY: 物理层协议栈, 同协议一致。
RF: 射频单元, 功能同 UE。 基于上述的协议层结构, 对前述的步骤 S314中的数据信息传输流程 进行说明如下:
如图 8所示, 为 NME与 eNB之间数据通信协议示意图。 其中, PDCP、 RLC, MAC, PHY等协议层的功能, 处理流程同协议标准一致。
下面, 进一步的按照上行数据和下行数据分别说明本发明的实施例 所提出的技术方案。
1、 下行数据 (eNB至 NME )
发送端 (eNB ): 应用层位于协议栈的栈顶, 其结构为 NME与 NB之 间约定, 各个层的配置由层间原语配置完成, 应用层与 PDCP层之间的通 信接口为自定义数据接口, 同样, 根据链路建立时的配置, PDCP层接收 到此链路的数据发送给应用层, PDCP层与 RLC层, RLC层与 MAC层, MAC层与 PHY层之间等通信接口与标准一致, 经过各层处理后通过空中 接口发送出去。
接收端 (NME ): 从空口收到的信号经过射频通道、 PHY层、 MAC 层、 RLC层、 PDCP层处理, 从 PDCP层接收数据后通过约定的通信数据 结构, 获取到数据信息, 各个层的配置由 RRC连接重配置消息 (RRC Connection Reconfiguration ) 酉己置: ¾成。
相应的, 本发明的实施例给出 NME与 eNB之间通信的数据格式定义 示例, 此结构用来描述下行数据(eNB至 NME ) 的用户数据通信结构, NME用此结构来接收到 eNB的各种数据或应答消息和 NB内部的信息等。 具体说明如下:
NME—ANSWER
SRC_IP_ADDR(SIZE 64) 源 IP地址 (eNB的 IP地址)
DEST_IP_ADDR(SIZE 64) 目的 IP地址 (NME的 IP地址)
TIME(SIZE 32) HH/MM/SS/SYS/SUB (发送此消息的时间点) REQUEST_DATA_SIZE(SIZE 32) 应答数据大 'J、
NUMBER_OF_REQUEST(SIZE 16) 应答类型个数 REQUEST_TYPE(SIZE 32) 对应的请求类型值 (个数与此值—— 对应)
REQUEST_DATA_SIZE(SIZE 32) 对应请求类型的数据域大小 (与 REQUEST_TYPE成对出现)
DATA 数据域 (与非 0的 REQUESTED ATA_SIZE成对出现)
2、 上行数据 (NME至 eNB )
发送端 (NME ): 应用层位于协议栈的栈顶, 其结构为 NME与 NB之 间约定, 各个层的配置由 RRC连接重配置消息 ( RRC Connection
Reconfiguration )配置完成, 应用层的数据与 PDCP层的接口为内部实现, PDCP层与 RLC层, RLC层与 MAC层, MAC层与 PHY层之间等通信接口 与标准一致, 最后通过空中接口发送出去。
接收端(eNB ): 从空口收到的信号经过射频通道、 PHY层、 MAC层、 RLC层、 PDCP层处理后, 根据建立链路的配置, 数据发送给应用层, 应 用层接收到数据通过约定的通信数据结构获取到数据信息 .
相应的, 本发明的实施例给出 NME与 eNB之间通信的数据格式定义 示例, 此结构用来描述上行数据(NME至 eNB ) 的用户数据通信结构, eNB用此结构来接收到 NME的各种请求消息, NME所在的小区部分信息, 和 NME内部的信息等。 具体说明如下:
NME_REQUEST(SIZE bit)
SRC_IP_ADDR(SIZE 64) 源 IP地址 (NME的 IP地址)
DEST_IP_ADDR(SIZE 64) 目的 IP地址 (驻留的 eNB的 IP地址) CELL_ID(SIZE 8) 小区 ID (驻留的 eNB的小区 ID)
CELL_FREQUENCE(SIZE 8) 小区频点 (驻留的 eNB的频点) TIME(SIZE 32) HH/MM/SS/SYS/SUB (发送此消息的时间点) REQUEST_DATA_SIZE(SIZE 32) 请求数据大 'J、
NUMBER_OF_REQUEST(SIZE 16) 请求类型个数 REQUEST_TYPE(SIZE 32) 请求类型值 (个数与此值——对应) REQUEST_DATA_SIZE(SIZE 32) 请求类型的数据域大小(与 REQUEST_TYPE成对出现)
DATA 数据域 (与非 0的 REQUESTED ATA_SIZE成对出现) 不同的请求类型有不同的含义, 通过不同 REQUEST_TYPE值表示不 同的请求类型
REQUEST_TYPE(SIZE 32)
ENUMERATED REQ_SYS_RST = 0
ENUMERATED REQ—SYS—UPDATA
ENUMERATED REQ_RRC_CONNECTION_RELEASE_REQUEST ENUMERATED REQ_RRU—ALARM
ENUMERATED REQ—BBU—ALARM
ENUMERATED REQ—CCU—ALARM
ENUMERATED REQ_PW—ALARM 需要进一步指出的是, 上述说明中的设备结构和数据结构均是本发 明的优选实施例, 任何可以达到类似技术效果的通信目的协议或数据结 构都适用于本方法。
进一步的 ,上述的网元和 NME的处理过程也是本发明的优选实施例 , 任何能够达到类似技术效果的技术方案都适用于本发明的保护范围。 任 何实现类似功能的设备都属于本发明保护范围内。
通过应用本发明实施例的技术方案, 可以实现对基站数据信息的获 取流程的筒化, 降低了网络维护的成本, 也防止了人为因素对基站运行 和维护过程的破坏和影响。 通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到 本发明可以通过硬件实现, 也可以借助软件加必要的通用硬件平台的方 式来实现。 基于这样的理解, 本发明的技术方案可以以软件产品的形式 体现出来, 该软件产品可以存储在一个非易失性存储介质 (可以是
CD-ROM, U盘, 移动硬盘等)中, 包括若干指令用以使得一台计算机设 备(可以是个人计算机, 服务端, 或者网络设备等)执行本发明各个实 施场景所述的方法。
本领域技术人员可以理解附图只是一个优选实施场景的示意图, 附 图中的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施场景中的装置中的模块可以按照实施 场景描述进行分布于实施场景的装置中, 也可以进行相应变化位于不同 于本实施场景的一个或多个装置中。 上述实施场景的模块可以合并为一 个模块, 也可以进一步拆分成多个子模块。
上述本发明序号仅仅为了描述, 不代表实施场景的优劣。
以上公开的仅为本发明的几个具体实施场景, 但是, 本发明并非局 限于此, 任何本领域的技术人员能思之的变化都应落入本发明的保护范 围。

Claims

权利要求
1、 一种 LTE基站维护方法, 其特征在于, 应用于包括网络维护 设备和基站的长期演进 LTE系统中, 包括:
所述基站接收到所述网络维护设备发送的连接请求消息, 其中, 所述连接请求消息中包含所述网络维护设备的标识信息;
所述基站根据所述标识信息识别所述发送连接请求消息的设备 是否为网络维护设备;
如果所述基站识别所述发送连接请求消息的设备是网络维护设 备,所述基站判断当前是否存在足够接纳所述网络维护设备的空闲资 源;
如果所述基站判断当前存在足够接纳所述网络维护设备的空闲 资源, 所述基站与所述网络维护设备建立通信连接;
所述基站通过所述通信连接与所述网络维护设备进行通信,对所 述基站进行维护。
2、 如权利要求 1所述的方法, 其特征在于, 所述基站接收到所 述网络维护设备发送的连接请求消息之前, 还包括:
所述基站接收所述网络维护设备发送的随机接入请求消息; 所述基站向所述网络维护设备发送随机接入响应消息,为所述网 络维护设备分配上行资源。
3、 如权利要求 2所述的方法, 其特征在于, 还包括:
所述网络维护设备进行无线信道测量;
当所述网络维护设备判断所述无线信道测量的结果高于预设阈 值时, 所述网络维护设备向所述基站发送随机接入请求消息。
4、 如权利要求 1所述的方法, 其特征在于, 所述连接请求消息 中包含所述网络维护设备的标识信息, 具体为:
所述连接请求消息的初始设备标识 Initial UE- Identity字段伪随 机数值;
所述连接请求消息的接入原因枚举值中包含操作维护接入标识。
5、 如权利要求 1所述的方法, 其特征在于, 还包括:
如果所述基站识别所述发送连接请求消息的设备不是网络维护 设备, 所述基站按照正常用户设备的接入处理流程处理;
如果所述基站识别所述发送连接请求消息的设备是网络维护设 备,但所述基站判断当前不存在足够接纳所述网络维护设备的空闲资 源, 所述基站向所述网络维护设备发送连接拒绝消息, 拒绝所述网络 维护设备发送的连接请求消息。
6、 如权利要求 1所述的方法, 其特征在于, 所述基站与所述网 络维护设备建立通信连接, 具体为:
所述基站通过公共控制信道向所述网络维护设备发送连接建立 消息, 建立所述通信连接;
所述基站接收所述网络维护设备通过专用控制信道发送的连接 建立完成消息, 完成所述通信连接的建立;
所述基站判断是否是与所述网络维护设备建立所述通信连接; 如果所述基站判断是与所述网络维护设备建立所述通信连接,所 述基站向所述网络维护设备发送连接重配置消息,建立用户平面承载 RAB;
所述基站接收所述网络维护设备发送的连接重配置完成消息, 完 成所述用户平面承载的建立。
7、 如权利要求 6所述的方法, 其特征在于, 所述连接重配置消 息, 还用于配置所述网络维护设备中的各个协议层;
如果所述基站判断不是与所述网络维护设备建立所述通信连接, 所述基站按照正常用户设备的接入处理流程处理。
8、 如权利要求 1所述的方法, 其特征在于, 还包括:
如果所述基站接收到所述网络维护设备发送的连接释放请求消 息, 或所述基站判断当前没有足够的空闲资源为其他用户设备服务, 所述基站向所述网络维护设备发送连接释放消息, 释放所述通信连 接; 或,
如果所述基站在预设的响应时间内没有接收到所述网络维护设 备发送的信息, 所述基站释放所述通信连接。
9、 如权利要求 1所述的方法, 其特征在于, 还包括:
所述网络维护设备进行无线信道测量, 当所述网络维护设备判断 所述无线信道测量的结果低于预设阈值时,所述网络维护设备向所述 基站发送连接释放请求消息, 并接收所述基站返回的连接释放消息, 释放所述通信连接; 或,
所述网络维护设备直接接收所述基站返回的连接释放消息,释放 所述通信连接; 或,
如果所述网络维护设备在预设的响应时间内没有接收到所述基 站返回的信息, 所述网络维护设备释放所述通信连接。
10、 一种基站, 其特征在于, 应用于包括网络维护设备和基站的 LTE系统中, 包括:
通信模块, 用于接收所述网络维护设备发送的连接请求消息, 其 中, 所述连接请求消息中包含所述网络维护设备的标识信息, 并用于 通过建立的通信连接与所述网络维护设备进行通信,对所述基站进行 维护;
判断模块, 与所述通信模块连接, 用于根据所述通信模块所接收 的标识信息识别所述发送连接请求消息的设备是否为网络维护设备, 并在识别所述设备是网络维护设备时,判断当前是否存在足够接纳所 述网络维护设备的空闲资源;
建立模块, 与所述通信模块和所述判断模块连接, 用于在所述判 断模块判断当前存在足够接纳所述网络维护设备的空闲资源时,与所 述网络维护设备建立通信连接,使所述网络维护设备与所述基站进行 通信。
11、 如权利要求 10所述的基站, 其特征在于, 还包括: 管理模块, 与所述通信模块和所述建立模块连接, 如果所述通信 模块在预设的响应时间内没有接收到所述网络维护设备发送的信息, 或当前没有足够的空闲资源为其他用户设备服务,用于释放所述建立 模块所建立的通信连接。
12、 一种网络维护设备, 其特征在于, 应用于包括网络维护设备 和基站的 LTE系统中, 包括:
通信模块, 用于向所述基站发送连接请求消息, 其中, 所述连接 请求消息中包含所述网络维护设备的标识信息,并接收所述基站返回 的消息, 还用于通过建立的通信连接与所述基站进行通信, 对所述基 站进行维护;
建立模块, 与所述通信模块连接, 用于当所述通信模块接收的所 述基站返回的消息为连接建立消息时, 与所述基站建立通信连接, 使 所述网络维护设备与所述基站进行通信。
13、 如权利要求 12所述的网络维护设备, 其特征在于, 所述连 接请求消息中包含所述网络维护设备的标识信息, 具体为:
所述连接请求消息的 Initial UE- Identity字段伪随机数值; 所述连接请求消息的接入原因枚举值中包含操作维护接入标识。
14、 如权利要求 12所述的网络维护设备, 其特征在于, 还包括: 设置模块,用于设置所述网络维护设备所在的网络的信道质量阈 值;
检测模块, 与所述设置模块和所述通信模块连接, 用于对所述网 络维护设备所在的网络进行无线信道测量,并检测所述无线信道测量 的记过是否高于所述设置模块所设置的信道质量阈值;
所述通信模块,还用于当所述检测模块判断所述无线信道测量的 结果高于所述设置模块所设置的信道质量阈值时,向所述基站发送随 机接入请求消息。
15、 如权利要求 14所述的网络维护设备, 其特征在于, 还包括: 所述检测模块,还用于在所述建立模块与所述基站建立通信连接 之后, 继续对所述网络维护设备所在的网络进行无线信道测量, 并检 测所述无线信道测量的记过是否低于所述设置模块所设置的信道质 量阈值; 所述通信模块,还用于当所述检测模块判断所述无线信道测量的 结果低于所述设置模块所设置的信道质量阈值时,向所述基站发送连 接释放请求消息, 并接收所述基站返回的连接释放消息, 释放所述通 信连接; 或,
16、 如权利要求 12所述的网络维护设备, 其特征在于, 还包括: 管理模块, 与所述通信模块和所述建立模块连接, 如果所述通信 模块在预设的响应时间内没有接收到所述基站发送的信息,用于释放 所述建立模块所建立的通信连接。
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