WO2009026814A1 - Procédé de configuration de cellules voisines, dispositif de communication et terminal sans fil - Google Patents

Procédé de configuration de cellules voisines, dispositif de communication et terminal sans fil Download PDF

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Publication number
WO2009026814A1
WO2009026814A1 PCT/CN2008/071870 CN2008071870W WO2009026814A1 WO 2009026814 A1 WO2009026814 A1 WO 2009026814A1 CN 2008071870 W CN2008071870 W CN 2008071870W WO 2009026814 A1 WO2009026814 A1 WO 2009026814A1
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Prior art keywords
wireless terminal
neighboring
neighboring area
network side
measurement
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PCT/CN2008/071870
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English (en)
Chinese (zh)
Inventor
Jiancheng Du
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Huawei Technologies Co., Ltd.
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Publication of WO2009026814A1 publication Critical patent/WO2009026814A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a neighboring cell configuration method, a communication device, and a wireless terminal. Background technique
  • GSM Global System for Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access Mobile Communication System
  • LTE Long Term Evolution
  • WIMAX Global Interoperability for Microwave Access
  • the basic conditions for implementing the fast handover include: switching the control point (anchor point) as far as possible to be close to the air interface, for example, close to the base station controller, the LTE base station, etc.; performing neighbor cell measurement before the handover to lock the target cell of the handover, and advance The target cell is notified to prepare the corresponding channel resources, which requires configuring a neighbor list for each cell in the system.
  • the method for configuring a neighbor list for a cell includes: determining a neighboring cell of each cell by using a related road test work and adding necessary network planning tools, and then preparing a neighbor list file related to each cell, Import the network system and activate it.
  • the system network side notifies the wireless terminal to perform monitoring, measurement, etc. of the neighboring area through system messages or other related signaling.
  • the embodiments of the present invention provide a neighboring cell configuration method, a communication device, and a wireless terminal, which are used to solve the problem that the neighboring cell configuration cannot be automatically performed in the prior art.
  • a neighboring area configuration method comprising:
  • the network side notifies the wireless terminal to perform neighbor cell measurement in the idle state
  • the wireless terminal performs the neighboring area measurement and reports the neighboring area information according to the system setting rule; the network side receives the neighboring area information reported by the wireless terminal, and performs the neighboring area configuration.
  • a communication device comprising:
  • a notification unit configured to notify the wireless terminal to perform neighboring area measurement in an idle state
  • a receiving unit configured to receive neighboring area information reported by the wireless terminal, and send a configuration message according to a system formulating rule
  • a configuration unit configured to receive a configuration message sent by the receiving unit, and perform neighboring area configuration according to the neighboring area information.
  • a wireless terminal comprising:
  • a parsing unit configured to receive and parse a neighboring cell measurement command sent by the network side, and send a neighboring cell measurement message
  • a measuring unit configured to receive a neighboring cell measurement message sent by the parsing unit, perform neighbor cell measurement in an idle state, and send a report message
  • the reporting unit is configured to receive the report message sent by the measurement unit, and report the neighboring area information to the network side according to the system formulation rule.
  • the network side notifies the wireless terminal to perform the neighboring area measurement in the idle state, and receives the neighboring area information reported by the wireless terminal to perform the neighboring area configuration.
  • the scheme provided by the embodiment of the present invention can automatically generate and maintain the neighbor list, greatly reducing the cumbersome configuration of the neighboring area, and at the same time, the neighboring configuration is no longer the manual configuration in the prior art. It is easy to make mistakes.
  • FIG. 1 is a flowchart of a main implementation principle of Embodiment 1 of the present invention
  • 2 is a flowchart of a main implementation principle of Embodiment 2 of the present invention
  • Embodiment 3 is a flowchart of a main implementation principle of Embodiment 3 of the present invention.
  • FIG. 4 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a configuration unit 43 in a communication device according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a wireless terminal according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a parsing unit 61 in a wireless terminal according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a reporting unit in a wireless terminal according to an embodiment of the present invention.
  • the state of a wireless terminal can generally be divided into two types: idle state and connected state.
  • the connection state generally refers to the network side allocating and retaining related radio resources (such as a wireless channel, etc.) for the wireless terminal, and the wireless terminal establishes a wireless link with the network side by using the wireless resource to perform related signaling interaction or service exchange.
  • the idle state generally means that the network side does not establish a wireless link with the wireless terminal, and the network side does not allocate and reserve a specific wireless resource (such as a wireless channel, etc.) for the wireless terminal.
  • the broadcast channel here refers to a channel used for system message broadcast, or may be a channel for performing related service broadcasts (e.g., multimedia broadcast, etc.).
  • a wireless terminal can perform a search for a neighboring cell (inter-frequency neighboring cell, a different-frequency neighboring cell, a different-system neighboring cell, etc.), searching for a network (such as finding a home network thereof, or finding a network with better signal quality, etc.) ).
  • a neighboring cell inter-frequency neighboring cell, a different-frequency neighboring cell, a different-system neighboring cell, etc.
  • searching for a network such as finding a home network thereof, or finding a network with better signal quality, etc.
  • the network side of the wireless communication network notifies the wireless terminal to perform the neighboring area measurement, and receives the neighboring area information reported by the wireless terminal, and performs the automatic configuration of the neighboring area according to the neighboring area information reported by the wireless terminal.
  • the wireless terminal described herein refers to a wireless terminal that enters the network and is in an idle state.
  • some wireless communication systems in a wireless communication system are capable of performing neighboring area measurement and reporting functions even in a connected state. For example, many wireless terminals can perform measurement in the same frequency neighboring area in a connected state.
  • the wireless terminal that can perform the measurement of the neighboring cell in the connected state can also perform the neighboring area measurement and report by using the solution provided by the embodiment of the present invention.
  • the network side can automatically configure the neighboring cells for all cells in the network, or perform automatic neighboring cell configuration only for some cells.
  • the network side may send the system message to notify the wireless terminal in the cell to perform the neighboring cell measurement, and perform the neighboring zone automatic configuration according to the neighboring cell information reported by the wireless terminal.
  • the network side does not need to notify all wireless terminals in the network to perform neighbor cell measurement and reporting, but may select some wireless terminals to perform neighbor cell measurement and reporting according to a certain selection mechanism.
  • the selection mechanism of the wireless terminal and the number of selected wireless terminals can be determined according to the network operation status, the number of wireless terminals in the network, and the congestion of the wireless resources, and can be adjusted as needed.
  • the network side sends a neighboring cell measurement command through the system message, and selects a part of the idle wireless terminal to perform neighbor cell measurement and reporting by using a probability factor.
  • the main implementation process of Embodiment 1 of the present invention includes:
  • Step 1 1 The network side of the wireless communication network sends a neighboring cell measurement command by using the cell system message, where the neighboring cell measurement command carries a probability factor X, and the maximum value of the probability factor X is 1.
  • the probability factor X can take a value of 0.1, which means that 10% of the wireless terminals in the cell should perform neighboring cell measurements and uplinks.
  • the neighboring cell measurement command can also be specified to measure the category of the neighboring cell, for example, the same-frequency neighboring cell, Inter-frequency neighbors, different system neighbors, or neighbors of all categories;
  • the neighboring cell measurement command may also specify the number and type of neighboring cells in the neighboring cell information reported by the wireless terminal. For example, the wireless terminal may report only the five intra-frequency neighboring cells with the strongest signal, or the wireless terminal reports the most signal. Strong 3 inter-frequency neighbors, etc.;
  • the neighboring cell measurement command may also specify a manner in which the wireless terminal reports the neighboring cell information. For example, the wireless terminal reports the neighboring cell information immediately after performing the neighboring cell measurement, or delays the random zone time period and then reports the neighboring cell information, or The wireless terminal may also wait for the neighbor information of the measurement to be reported when the next service connection establishment (such as location update or actual service) is performed.
  • the next service connection establishment such as location update or actual service
  • the probability factor X can be determined based on the network operating conditions, the number of wireless terminals in the network, and the congestion of the wireless resources. If the network side only needs to perform automatic configuration of the neighboring cell in a cell in the network, the network side only needs to send the neighboring cell measurement command in the cell through the system message.
  • Step 1 2 After receiving the neighboring area measurement command, the wireless terminal parses the probability factor X therein; and according to its own random number generator, generates a random number Y that is not greater than 1, and compares the probability factor X with the random number Y. Size, if the random number Y is less than the probability factor X, then step 1 3 is performed; if the random number Y is greater than the probability factor X, step 14 is performed.
  • the probability factor X carried in the neighboring cell measurement command currently sent by the network side is 0.1. If a wireless terminal receives the neighboring cell measurement command, the generated random number Y is 0.05, and the random number Y is satisfied. If the wireless terminal receives the neighboring area measurement command, the generated random number Y is 0.8, and the random number Y is greater than the probability factor X, and step 14 is performed;
  • Step 1 3 The wireless terminal is selected to perform neighbor cell measurement and reporting.
  • the wireless terminal determines the neighboring area information and reports it to the network side (such as the wireless network controller MC on the network side) by searching for a new frequency point, a new scrambling code, a new codeword, and the like.
  • each wireless terminal may start performing neighbor cell measurement after a random time period, and may report neighboring cell information according to a system formulating rule, or may obtain a neighbor in the measurement.
  • the area information is postponed to a neighboring area information after a random period of time.
  • Step 14 The wireless terminal is not selected for neighboring area measurement and reporting, and thus the wireless terminal continues to monitor system messages.
  • Step 15 After receiving the neighboring area information reported by the wireless terminal, the network side performs classification, merging, and sorting to obtain a new neighboring cell list.
  • the network side needs to determine whether the neighbor list is complete. If the obtained neighbor list is complete, perform step 16; otherwise, continue to wait for whether the wireless terminal reports the neighbor information, and does not receive it within a set time period. After the neighboring cell information is reported to the other wireless terminal, it is determined whether the neighboring cell list is complete. If the neighboring cell list is incomplete, the process returns to step 1 1 , and the network side retransmits the neighboring cell measurement command through the system message.
  • a method for determining whether a neighbor list is complete for example:
  • Step 16 After establishing a complete neighbor list, the network side completes the automatic configuration and maintenance of the neighbor according to the neighbor list.
  • the network side can notify the wireless terminal to perform the process of measuring and reporting the neighboring cell.
  • the network side can determine the length of the interval for the neighboring cell to measure and report the neighboring cell according to the network operation status and the congestion of the wireless resource.
  • the network side can send a neighboring cell measurement command through the system message every time the neighboring cell measurement and reporting of the wireless terminal is performed, and notify some or all of the wireless terminals to perform neighbor cell measurement and uplink.
  • the network side can also send the system message only once, and the selected wireless terminal repeats the measurement and reporting of the neighboring cell in a certain period. At this time, the network side can adjust the period length of the neighboring area measurement and reporting by the wireless terminal through the system message. .
  • the neighboring cell measurement and reporting process of the wireless terminal may be suspended, or the period for measuring and reporting the neighboring cell of the wireless terminal may be lengthened.
  • the network structure may be adjusted, and the neighboring area of a cell may change.
  • the network side needs to restart the neighboring area measurement and reporting of the wireless terminal in the cell.
  • the process of the neighboring area measurement and reporting by the wireless terminal may also be periodically set, and the period is set by the network side, which may be fixed, and the second embodiment is also applied.
  • the neighboring area measurement command is sent by the network side, and the neighboring area measurement command carries the idle state wireless terminal identifier that is selected for the neighboring area measurement and reporting.
  • the main implementation process of Embodiment 2 of the present invention includes:
  • Step 21 The network side of the wireless communication network selects some of the wireless terminals to perform neighboring area measurement and reporting, and sends a neighboring area measurement command to notify the selected wireless terminal to perform neighboring area measurement and reporting.
  • the network side may specify part of the wireless terminal to perform neighbor cell measurement and reporting according to the network operation status, the number of wireless terminals in the network, and the congestion of the wireless resources.
  • the neighboring area measurement command sent by the network side carries the identification information of the selected wireless terminal to notify the selected wireless terminal to start the neighboring area measurement and reporting process.
  • Step 22 After receiving the neighboring area measurement command, the wireless terminal determines that it is selected for the neighboring area measurement and reporting, and then starts the neighboring area measurement and reporting process, and performs neighboring area measurement and reporting.
  • the wireless terminal may start performing neighbor cell measurement after a random time period, or immediately perform neighbor cell measurement, and start reporting neighbor cell information after delaying a random time period.
  • the neighboring cell type that the wireless terminal performs the measurement and the neighboring cell type and quantity reported by the wireless terminal may be specified by the network side, and the network side may send the system message to adjust the reported neighboring cell type and quantity at any time according to the need; the wireless terminal reports the neighboring area information.
  • the timing may also be specified by a system message, or determined by the wireless terminal. For example, the wireless terminal may report the neighbor information immediately after obtaining the neighbor information, or start reporting again after delaying a random time period, or at the network side. The connection is established and converted to the connected state before being reported.
  • Step 23 After receiving the neighboring area information reported by the wireless terminal, the network side performs classification, merging, and Organize and get a list of new neighborhoods. Further, the network side needs to determine whether the neighbor list is complete. If the obtained neighbor list is complete, go to step 24. Otherwise, go back to step 21. The network side re-issues the system message and selects some wireless terminals to perform neighbor measurement again. With the report.
  • a method for determining whether the neighboring cell list is complete for example: determining whether the number of neighboring cells in the neighboring cell list of each cell that has been established has reached the preset maximum number of neighboring cells of the cell, or determining the latest reported neighboring cell Whether the districts all fall within the list of established neighborhoods.
  • Step 24 After establishing a complete neighbor list, the network side completes the automatic configuration and maintenance of the neighbor according to the neighbor list.
  • the network structure may be adjusted.
  • the neighboring area of a cell may change.
  • the network side needs to restart the neighboring area measurement and reporting process of the wireless terminal in the cell to establish the network.
  • the new neighbor list of the cell completes the configuration of the neighboring area.
  • the process of measuring and reporting the neighboring area of the wireless terminal can also be periodically set. The period is set by the network side, and can be fixed or dynamically adjusted.
  • the network side determines that the specific wireless terminal performs neighboring cell measurement and uplink, and sends a neighboring cell measurement command to the corresponding wireless terminal by using the system message.
  • the wireless terminal determines whether it is selected for neighboring area measurement and reporting according to the received neighboring cell measurement command.
  • the network side selects the wireless terminal in the idle state to perform the neighboring area measurement and the upper side.
  • the network side can also select the wireless terminal in the connected state to perform the neighboring area measurement and reporting.
  • the network side selects a part of the wireless terminal in the connected state, and sends a neighboring area measurement command through the communication link established with the wireless terminal to instruct the neighboring area measurement and reporting.
  • the main implementation process of Embodiment 3 of the present invention includes:
  • Step 31 The network side selects the wireless terminal in the connected state to perform the neighboring area measurement and reporting, and sends the neighboring area measurement command by using the established communication link with the selected wireless terminal.
  • the network side can be based on network operating conditions, the number of wireless terminals in the network, and In the case of wireless resource congestion, a part of the wireless terminals are designated to perform neighbor cell measurement and reporting.
  • Step 32 After receiving the neighboring area measurement command, the wireless terminal starts the neighboring area measurement and reporting process, and performs neighboring area measurement and reports.
  • the wireless terminal may start performing neighbor cell measurement after a random time period, or immediately perform neighbor cell measurement, and start reporting neighbor cell information after delaying a random time period.
  • the neighboring cell type that the wireless terminal performs the measurement and the neighboring cell type and quantity reported by the wireless terminal may be specified by the network side, and the network side may send the system message to adjust the reported neighboring cell type and quantity at any time according to the need; the wireless terminal reports the neighboring area information.
  • the timing may also be specified by a system message, or determined by the wireless terminal. For example, the wireless terminal may report the neighbor information immediately after obtaining the neighbor information, or start reporting again after delaying a random time period, or at the network side. The connection is established and converted to the connected state before being reported.
  • Step 33 After receiving the neighboring area information reported by the wireless terminal, the network side performs classification, merging, and sorting to obtain a new neighboring cell list. Further, the network side needs to determine whether the neighbor list is complete. If the obtained neighbor list is complete, go to step 24, otherwise, go back to step 21, and the network side reselects the wireless terminal to send the neighbor measurement command.
  • the method for determining whether the neighboring cell list is complete includes: determining whether the number of neighboring cells in the neighboring cell list of each cell that has been established has reached the preset maximum number of neighboring cells of the cell, or determining the newly reported neighboring cell Whether all fall within the list of established neighborhoods.
  • Step 34 After establishing a complete neighbor list, the network side completes the automatic configuration and maintenance of the neighbor according to the neighbor list.
  • the network structure may be adjusted.
  • the neighboring area of a cell may change.
  • the network side needs to restart the neighboring area measurement and reporting process of the wireless terminal in the cell to establish the network.
  • the new neighbor list of the cell completes the configuration of the neighboring area.
  • the process of the neighboring area measurement and reporting by the wireless terminal can also be periodically set, and the period is set by the network side, and can be fixed or dynamically adjusted.
  • the network side selects the wireless terminal in the connected state to perform neighboring area measurement and reporting, and sends a neighboring area measurement command through the communication link established with the wireless terminal to notify the selected wireless terminal to perform neighboring area measurement and reporting. .
  • the embodiment of the present invention further provides a communication device, and a schematic structural diagram thereof is shown in FIG. 4, including:
  • the notification unit 4 1 is configured to notify the wireless terminal to perform neighboring area measurement in an idle state
  • the network side may send a neighboring cell measurement command in the system message, or may send a neighbor cell measurement command through a communication link established between the network side and the wireless terminal.
  • the neighboring area measurement command may carry a probability factor for selecting a wireless terminal with a certain probability to perform neighbor cell measurement and uplink, or directly designate all or part of the wireless terminals to perform neighbor cell measurement.
  • the wireless terminal After receiving the system message, the wireless terminal performs neighbor cell measurement and reports neighbor information.
  • the receiving unit 42 is configured to receive neighboring area information reported by the wireless terminal, and send a configuration message according to a system formulating rule;
  • the configuration unit 4 3 is configured to receive the configuration message sent by the receiving unit 42 and perform neighboring area configuration according to the configuration message.
  • the configuration unit 43 in the foregoing embodiment further includes: a determining subunit 4 31, configured to receive a configuration message, obtain a neighboring cell information generated by the receiving unit 42, and generate a neighboring cell list, and determine Whether the neighbor list is complete; when it is determined that the neighbor list is complete, the neighbor configuration message is sent;
  • the method for determining whether the neighbor list is complete includes: determining whether the number of neighbors in the neighbor list of each cell that has been established has reached the preset maximum number of neighbors of the cell, or determining the latest report. Whether the neighbors are all within the list of established neighbours.
  • the configuration subunit 4 32 is configured to receive a neighboring area configuration message and perform neighboring area configuration.
  • the communication device in the foregoing embodiment may be applied to any network that needs to perform automatic configuration of a neighboring area, for example, a wireless communication system network such as LTE, WIMAX, UMTS, CDMA, GSM, or the like.
  • a wireless communication system network such as LTE, WIMAX, UMTS, CDMA, GSM, or the like.
  • an embodiment of the present invention provides a wireless terminal, and a schematic structural diagram thereof is shown in FIG. 6 , including:
  • the parsing unit 61 is configured to receive and parse a neighboring cell measurement command sent by the network side, and send a neighbor cell measurement message;
  • the measuring unit 62 is configured to receive a neighboring cell measurement message, perform neighbor cell measurement in an idle state, and send a report message;
  • the reporting unit 63 is configured to receive the report message of the neighboring area, and report the neighboring area information to the network side according to the system formulating rules.
  • the parsing unit 61 in the foregoing embodiment further includes: a command parsing sub-unit 611, configured to parse the neighboring area measurement command sent by the network side, and determine that the neighboring area measurement is performed by itself. Send a notification message;
  • a sending subunit 612 configured to receive a notification message, and send a neighboring cell measurement message
  • the random number generating comparison sub-unit 613 is configured to generate a random number not greater than 1 when the neighboring area measurement command includes the probability factor, and compare the generated random number with the size of the probability factor, when the random number is smaller than In the case of the probability factor, the notification message is sent to the sending sub-unit 612; in particular, the command parsing sub-unit 611 parses the neighboring area measurement command to include the probability factor, and then notifies the random number generating comparison sub-unit 613.
  • the reporting unit 63 in the above embodiment further includes: a reporting manner determining sub-unit 631, configured to determine whether the reporting manner is immediate reporting, delayed reporting, or reporting neighboring area information along with service data. One, and send a notification of the determined reporting method;
  • the report execution sub-unit 632 is configured to receive the report mode notification sent by the report mode determining sub-unit 631.
  • the report message sent by the receive measurement unit 62 is sent to the network side by using the determined report mode.
  • the network side notifies all or part of the wireless terminals in the network to perform the measurement of the neighboring area and reports the status, and completes the automatic configuration of the neighboring area according to the reported neighboring area information.

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

Abstract

L'invention concerne un procédé de configuration de cellules voisines, un dispositif de communication et un terminal sans fil. Un côté réseau notifie à un terminal sans fil d'effectuer une mesure de cellules voisines lorsque le terminal sans fil est dans un état de veille ; le terminal sans fil effectue la mesure de cellules voisines et rapporte le message de cellules voisines sur la base d'une règle de personnalisation de système ; le côté réseau reçoit le message de cellules voisines rapporté provenant du terminal sans fil et effectue la configuration des cellules voisines. La solution proposée par la présente invention permet de réaliser une génération et une maintenance automatiques de la liste des cellules voisines et de réduire fortement le niveau de complexité de la configuration des cellules voisines. Simultanément, le travail de la configuration des cellules voisines n'est pas le même que celui de la configuration manuelle qui fait facilement une erreur dans l'art antérieur.
PCT/CN2008/071870 2007-08-27 2008-08-05 Procédé de configuration de cellules voisines, dispositif de communication et terminal sans fil WO2009026814A1 (fr)

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