WO2011069405A1 - Procédé de prétraitement de transfert intercellulaire - Google Patents

Procédé de prétraitement de transfert intercellulaire Download PDF

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Publication number
WO2011069405A1
WO2011069405A1 PCT/CN2010/078790 CN2010078790W WO2011069405A1 WO 2011069405 A1 WO2011069405 A1 WO 2011069405A1 CN 2010078790 W CN2010078790 W CN 2010078790W WO 2011069405 A1 WO2011069405 A1 WO 2011069405A1
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WIPO (PCT)
Prior art keywords
base station
terminal
cell
message
neighboring base
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Application number
PCT/CN2010/078790
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English (en)
Chinese (zh)
Inventor
陈琳
谢峰
江辉
褚丽
刘扬
鲁照华
Original Assignee
中兴通讯股份有限公司
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.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011069405A1 publication Critical patent/WO2011069405A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information

Definitions

  • TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a handover preprocessing method.
  • a base station with a large coverage.
  • Such a base station is generally called a macro base station (Macro BS), and its covered cell is usually called a macro cell, and a macro base station can cover an area of 2-3 kilometers.
  • the wireless communication system takes into account different needs of users and the use environment, and some base stations with small coverage and low transmission power are deployed to provide users with higher quality wireless communication services in certain specific environments or scenarios.
  • These small base stations include a small base station (Micro BS), a micro base station (Pico BS), and a child base station (Femto BS) (which may also be referred to as a home base station, a personal base station;).
  • a wireless communication system composed of base stations in order to ensure service continuity, the terminal often needs to switch between base stations and re-enter the target base station during the mobile process.
  • FIG. 1 is a schematic diagram of a base station handover of a wireless communication system according to the related art. As shown in FIG. 1, when terminal A moves from a coverage area of a child base station A to a coverage area of a macro base station A, the terminal needs to switch from the child base station A to the macro base station.
  • the handover shown in FIG. 1 includes: (1) acquisition and measurement of a network topology, the base station transmitting topology information of the network, providing the terminal with a nearby base station, and the terminal measuring and reporting the nearby base station; (2) switching Initiating, the terminal and the base station determine whether the handover needs to be triggered according to the handover threshold and the measurement result set by the system; (3) performing handover, and completing handover parameters between the terminal and the monthly base station and the target base station through a series of messages and The interaction of the status information; (4) The network re-enters, the terminal synchronizes with the target base station, acquires the uplink and downlink transmission parameters, and establishes a new data transmission connection.
  • the terminal In order to ensure the quality of the monthly service, the terminal must control the overhead as much as possible during the entire handover process, reducing useless scanning, message interaction, and re-entry to reduce overall switching overhead and delay.
  • the base station may set the cell barring information of the first sub-packet of the secondary superframe header to 1 for some reason (for example, the load is high or the backhaul connection is disconnected), that is, the base station is set to be in the The cell disables the state to prevent the terminal from entering or re-entering the base station during this period.
  • the terminal and the service base station do not fully consider the processing when the neighboring base station is in the cell-disabled state, and the traditional handover processing method causes the terminal to attempt handover and the network re-enters the base station forbidden by the cell, resulting in terminal handover.
  • the delay is long and even dropped, which seriously affects the quality of service.
  • a handover preprocessing method includes: the base station and/or the terminal receiving the cell prohibition indication information of the neighboring base station of the service base station, wherein the cell prohibition indication information is used to indicate whether the neighboring base station is in the cell prohibition State; the serving base station and/or the terminal processes the message exchanged during the scanning and/or handover process according to the cell prohibition indication information.
  • the method before the serving base station receives the cell prohibition indication information of the neighboring base station, the method includes: the predetermined network element transmitting the cell prohibition indication information of the neighboring base station of the monthly service base station to the monthly service base station, where the predetermined network element includes at least One of the following: Self-organizing network servers, terminals, neighboring base stations.
  • the method before the terminal receives the cell prohibition indication information of the neighboring base station of the service base station, the method further includes: the serving base station and/or the neighboring base station transmitting the cell prohibition indication information of the neighboring base station of the serving base station.
  • the processing of the message exchanged in the scanning and/or handover process by the service base station and/or the terminal according to the cell prohibition indication information comprises: excluding information of the neighboring base station in the cell-disabled state in the exchanged message.
  • the processing of the message exchanged during the scanning and/or the handover process by the service base station and/or the terminal according to the cell prohibition indication information includes: carrying the message in the interaction message to indicate that the neighboring base station is in the 'J, the zone is forbidden Status indication.
  • the serving base station receives the cell prohibition indication information of the neighboring base station, where: the serving base station receives the message that is sent by the ad hoc network server and carries the information of the neighboring base station; The cell prohibition indication information of the neighboring base station is obtained in the message of the neighboring base station information.
  • the serving base station receiving the cell prohibition indication information of the neighboring base station comprises: the serving base station scanning the neighboring base station to receive the cell prohibition indication information of the neighboring base station.
  • the receiving, by the service base station, the cell prohibition indication information of the neighboring base station comprises: the terminal or the monthly base station initiating the handover; the serving base station transmitting the message to the handover candidate target base station, and receiving the response message from the candidate target base station;
  • the cell prohibition indication information of the candidate target base station is obtained in the response message.
  • the serving base station processing the message exchanged during the scanning and/or the handover process comprises: the serving base station excluding information of the neighboring base station in the cell-disabled state in at least one of the following messages sent to the terminal: a neighbor list message, Scan response messages, switch command messages.
  • the serving base station processes the message that is exchanged during the scanning and/or the switching process, the method includes: the serving base station carrying the indication information in the message sent to the terminal, where the message sent to the terminal includes a neighboring area list message, where the indication information is used Indicates a neighboring base station in a cell-disabled state among neighboring base stations of the serving base station.
  • the receiving, by the terminal, the cell prohibition indication information of the neighboring base station comprises: the terminal scanning the neighboring base station to receive the cell prohibition indication information of each neighboring base station.
  • the scanning of the neighboring base station by the terminal includes at least one of the following: the terminal selects a frequency, and starts a blind scan search; the serving base station selects a neighboring base station that needs to be scanned according to the information of the neighboring base station that is saved this time, and starts scanning.
  • the serving base station sends a message of the information of the neighboring base station to be scanned to the terminal by scanning the response message, and the terminal scans the neighboring base station that needs to be scanned.
  • the terminal processing the message exchanged during the scanning and/or the handover process comprises: the terminal prohibiting the cell of the neighboring base station in the cell-disabled state by using the scan report message
  • the information is sent to the serving base station.
  • the terminal processes the message exchanged during the scanning and/or the handover process, where the terminal sends the predetermined message to the serving base station, where the predetermined message is excluded from the cell prohibition state.
  • the information of the neighboring base station, the predetermined message includes at least one of the following: a handover indication information, a scan report message, and a handover request message.
  • the receiving, by the terminal, the cell prohibition indication information of the neighboring base station includes: receiving, by the terminal, the cell prohibition indication information of the target base station re-entered by the network when the network re-enters, where the target base station is adjacent
  • the method further includes: determining, by the terminal from the candidate target base station, another base station as the target base station.
  • the network re-entry is attempted, where the candidate target base station is a subset or a set of neighboring base stations; if the candidate target base station determined by the terminal is in an accessible state, the terminal completes the network re-entry to the determined candidate target base station.
  • the base station and/or the terminal receiving the neighboring base station information in the cell-disabled state during the scanning and/or handover process and processing the cell prohibition information of the neighboring base station in the interactive message,
  • the problem that the handover time of the terminal is long or even dropped due to the processing of the base station in the cell-disabled state is not advanced in the related art, thereby realizing reliable target base station access, thereby improving the base station of the wireless communication system.
  • FIG. 1 is a schematic diagram of a base station handover of a wireless communication system according to the related art
  • FIG. 2 is a flowchart of a handover preprocessing method according to an embodiment of the present invention
  • FIG. 3 is a base station according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of excluding neighboring base station information in a cell-disabled state when a base station transmits an NBR-ADV message according to an embodiment of the present invention;
  • 6 is a flowchart of excluding neighboring base station information in a cell-disabled state when a base station transmits a HO-CMD message according to an embodiment of the present invention;
  • FIG. 7 is a diagram of a terminal scanning and processing neighboring neighboring base stations according to an embodiment of the present invention;
  • FIG. 8 is a base station according to an embodiment of the present invention, according to received received cell prohibition information
  • FIG. 9 is a flowchart of processing a neighbor base station information according to a received HO-RSP message including cell barring information according to an embodiment of the present invention
  • FIG. 9 is a flowchart of processing a neighbor base station information according to a received HO-RSP message including cell barring information according to an embodiment of the present invention
  • 10 is a flowchart of a base station performing direct scan on a neighboring base station to obtain cell prohibition state related information and processing neighbor base station information according to an embodiment of the present invention
  • FIG. 11 is a block according to an embodiment of the present invention. Flowchart of processing NBR-ADV message of information to neighbor base station information
  • FIG. 9 is a flowchart of processing a neighbor base station information according to a received HO-RSP message including cell barring information according to an embodiment of the present invention
  • 10 is a flowchart of a base station performing direct scan on a neighboring base station to obtain cell prohibition state related information and processing neighbor base station information according to an embodiment of the present invention
  • FIG. 12 is a flowchart of excluding neighboring base station information in a cell-disabled state when a terminal transmits an SCN-REQ message according to an embodiment of the present invention
  • FIG. 14 is a flowchart for excluding a cell in a cell when transmitting a HO-REQ message according to an embodiment of the present invention
  • FIG. 12 is a flowchart of excluding neighboring base station information in a cell-disabled state when a terminal transmits an SCN-REQ message according to an embodiment of the present invention
  • FIG. 14 is
  • FIG. 15 is a diagram of the neighboring base station in the cell-disabled state when the terminal transmits the HO-IND message according to the embodiment of the present invention
  • FIG. 16 is a flowchart of processing a neighbor base station according to the received cell barring information when the network re-enters according to an embodiment of the present invention
  • FIG. 17 is a terminal and a target base station according to an embodiment of the present invention
  • the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some In this case, the steps shown or described may be performed in a different order than the ones described herein.
  • the base station in the following embodiments may include a macro base station, a small base station, a micro base station, and a small base station.
  • the serving base station refers to a base station that the terminal currently accesses. In the following embodiments, the cell is prohibited from being sent by the base station.
  • a handover pre-processing method includes: receiving, by a base station and/or a terminal, cell prohibition indication information of a neighboring base station, and processing, and FIG. 2 is a handover pre-operation according to an embodiment of the present invention.
  • Step S202 The service base station and/or the terminal processes the message exchanged during the scanning and/or switching according to the cell prohibition indication information.
  • the base station and/or the terminal can know whether the neighboring base station is in the cell-disabled state, and can perform corresponding processing according to whether the serving base station and/or the terminal is in the cell-disabled state according to whether the neighboring base station is in the cell-disabled state.
  • the process of the inter-exchange message may be: excluding information of the neighboring base station in the cell-disabled state in the message, or carrying the message in the message to indicate whether the neighboring base station is in the cell.
  • the indication of the forbidden state ie, the active indication of the neighboring base station in the cell-inhibited state;
  • the serving base station may receive the cell barring state information of the neighboring base station by using at least one of the following: the serving base station acquires information about whether the neighboring base station is in the cell barring state by using the automatic neighbor cell update; and the serving base station receives the handover response sent by the target base station.
  • HO-RSP home-related resource plan
  • the serving base station acquires information about whether the neighboring base station is in a cell-disabled state by receiving a scan report (SCN-REP) message sent by the terminal;
  • SCN-REP scan report
  • the neighboring base station performs scanning to obtain information about whether the neighboring base station is in a cell-disabled state.
  • the terminal may receive the cell prohibition indication information of the neighboring base station by using one of the following:
  • the terminal obtains information about whether the neighboring base station is in a cell-disabled state by receiving a message sent by the serving base station, for example, a neighboring cell list (NBR-ADV) message; the terminal itself scans the neighboring base station to obtain whether the neighboring base station is in the cell bar. Status information;
  • the terminal receives information as to whether the neighboring base station of the target base station is in the cell-disabled state when the network re-enters.
  • NBR-ADV neighboring cell list
  • the serving base station may exclude neighboring base stations in a cell-blocking state in, but not limited to, an NBR-ADV message, a scanning response (SCN-RSP), and a handover command (HO-CMD) (ie, excluding Information about neighboring base stations in a cell-blocking state).
  • the terminal may be, but not limited to, a scan request (SCN-REQ) message, a scan 4 (SCN-REP) message, a handover request (HO-REQ), a handover indication (HO-IND) message.
  • the monthly service base station may indicate, in but not limited to, a neighboring base station in a cell-disabled state when transmitting an NBR-ADV message to the terminal; the terminal may send, but not limited to, the SCN-REP to the serving base station.
  • the message indicates the neighboring base station in the cell-disabled state. Description will be made below in conjunction with the preferred embodiments.
  • the base station maintains a neighbor relationship with neighboring base stations through an automatic update mechanism, that is, when a new base station joins or some base stations fail to work, the base stations pass the self-organizing network server.
  • ( SON Server ) Complete the neighbor list update.
  • the automatic neighbor list update interaction message sent by the self-organizing server to the base station should include the cell prohibition information.
  • 3 is a flowchart of processing, by a base station, information about neighboring base stations according to automatic update information including cell barring information according to an embodiment of the present invention. As shown in FIG.
  • Step S301 The base station receives the automatically updated neighbor list information including the cell barring information
  • Step S302 The base station processes the neighboring base station information, for example, updating the locally saved neighboring node The cell barring information of the base station.
  • the serving base station needs to send an NBR-ADV message, it may not be included in the NBR-ADV message.
  • the neighboring base station information in the cell-disabled state is included.
  • Step 4 is a flowchart of excluding the neighboring base station information in the cell-disabled state when the base station sends the NBR-ADV message according to the embodiment of the present invention.
  • the process includes the following steps.
  • the serving base station After the serving base station sends the NBR-ADV message, it is found by the automatic update mechanism that a new neighboring base station has entered the cell barring state, and the serving base station correspondingly updates the locally stored neighboring base station information. During this period, the terminal sends the SCN-REQ message to the serving base station according to the list of neighboring base stations included in the previously received NBR-ADV message, and includes the newly appearing neighboring base station that enters the cell prohibition state. After receiving the SCN-REQ message sent by the terminal, the server base station does not include the base station entering the cell prohibition state when transmitting the SCN-RSP message according to the current latest neighbor base station information.
  • Step S501 The base station checks a locally saved phase. Neighboring base station information
  • Step S502 The base station excludes neighboring base station information in a cell-disabled state when transmitting the SCN-RSP message. After receiving the SCN-RSP message that excludes the neighboring base station from the cell, the terminal can directly avoid scanning the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • the serving base station finds that the signal of the terminal is getting weaker and needs to be switched to other neighboring base stations.
  • the serving base station sends a HO-REQ message request handover to the neighboring base station, and it is noted that the service base station locally stores the latest neighbor base station information according to the automatic update mechanism, and the HO-REQ message is only sent to the neighboring node that is not currently in the cell prohibition state.
  • Base station After the serving base station selects the target base station of the candidate, the master Initiate a switch.
  • the monthly base station sends the HO-CMD message to the terminal, the same time, the monthly base station should pay attention to exclude the neighboring base stations in the cell-disabled state from the HO-CMD message.
  • Step S601 The base station checks a locally saved phase. Neighboring base station information; Step S602: When the base station sends the HO-CMD message, the neighboring base station information in the cell-disabled state is excluded. After receiving the HO-CMD message that excludes the neighboring base station from the cell, the terminal can avoid attempting to re-enter the network to the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • the preferred embodiment 4 finds that the signal from the serving base station is getting weaker and needs to be switched to other neighboring base stations to continue working.
  • the terminal sends a HO-REQ message to the serving base station to initiate a handover.
  • the serving base station After receiving the HO-REQ message sent by the terminal, the serving base station sends a HO-REQ message request handover to the neighboring base station.
  • the latest neighbor base station information stored locally by the serving base station according to the automatic update mechanism, HO-REQ The message is only sent to neighboring base stations that are not currently in the cell-disabled state.
  • the serving base station selects the target base station of the candidate, the serving base station sends a HO-CMD message to the terminal.
  • FIG. 6 is a flowchart of excluding the neighboring base station information in the cell-disabled state when the base station sends the HO-CMD message according to the embodiment of the present invention. As shown in FIG. 6, the process includes the following steps: Step S601: The base station checks the locally saved phase. Neighboring base station information; Step S602: When the base station sends the HO-CMD message, the neighboring base station information in the cell-disabled state is excluded.
  • the terminal After receiving the HO-CMD message that excludes the neighboring base station from the cell, the terminal can avoid attempting to re-enter the network to the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • the neighboring base station information currently in the cell-disabled state is not excluded from the NBR-ADV message and the SCN-RSP message sent by the base station to the terminal.
  • the terminal After receiving the SCN-RSP message sent by the serving base station, the terminal scans the neighboring base stations included in the SCN-RSP message one by one to determine whether the trigger condition for the scan report is met.
  • the terminal may also select a frequency for blind scanning to search for a neighboring base station or, when in an idle mode (Idle Mode), spontaneously select a neighboring base station according to previously received neighboring base station information and scan the selected neighboring base station. If scanning to a neighboring base station is currently in a cell-disabled state, the terminal processes and updates the locally stored neighbor base station information.
  • FIG. 7 is a flowchart of a method for a terminal to scan and process neighboring base stations according to an embodiment of the present invention. As shown in FIG. 7, the process includes the following steps: Step S701: The terminal scans neighboring base stations to obtain phases.
  • Step 4 S702: The terminal processes the neighboring base station information. Then, the terminal includes the information of the neighboring base station in the cell-disabled state when transmitting the SCN-REP message, and indicates that it is in the cell-disabled state. After receiving the SCN-REP message sent by the terminal and including the cell prohibition information, the base station correspondingly processes the locally stored neighbor base station information.
  • FIG. 8 is a flowchart of processing, by the base station, the neighbor base station information according to the received SCN-REP message including the cell barring information according to the embodiment of the present invention. As shown in FIG.
  • Step S801 The base station receives the SCN-REP message sent by the terminal and includes the cell prohibition information.
  • the neighboring base station information is updated, and after that, when the base station needs to transmit a handover related message such as HO-CMD, the neighbor base station information in the cell prohibited state is excluded.
  • the terminal After the terminal receives the HO-CMD message that excludes the neighboring base station from the cell, the terminal can avoid attempting to re-enter the network to the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • Preferred Embodiment 6 When the base station does not support the automatic update mechanism and the terminal does not report the base station in the SCN-REP message, the NBR-ADV message and the SCN-RSP message sent by the base station to the terminal are all included. The information about the neighboring base stations does not exclude the information of the neighboring base stations that are currently in the cell-disabled state.
  • the neighbor base station information in the cell-disabled state is not excluded from the SCN-REQ and SCN-REP messages sent by the terminal to the base station.
  • the terminal actively sends a HO-REQ message to initiate a handover or when the base station actively initiates the handover, the base station sends an HO-REQ message to each possible target base station according to the information of the neighboring base station saved by itself, and exchanges information through the bone thousand network. .
  • the base station that is currently in the cell-disabled state directly indicates that the base station is in the cell-disabled state when replying to the HO-RSP message.
  • FIG. 9 is a base station according to the embodiment of the present invention.
  • the flow includes the following steps: Step S901: The base station receives the HO that includes the cell prohibition information sent by the target base station, and the flowchart of the HO-RSP message including the cell barring information is updated. - RSP message; Step S902: The base station processes the neighbor base station information. When the base station subsequently transmits the HO-CMD message to the terminal, the base station does not include the base station in the cell-disabled state.
  • the terminal can avoid attempting to re-enter the network to the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • the base station can scan neighboring base stations in certain specific situations. For example, the base station can scan neighboring base stations during initialization and in Low Duty Mode to obtain which neighboring base stations. Information that is in the forbidden state of the cell. The base station performs the corresponding processing of the scan result and updates its locally stored neighbor base station information.
  • Step S 1001: The base station scans the neighboring base station;
  • Step SI 002 The base station acquires indication information of whether the neighboring base station is in a cell-disabled state.
  • the server base station When the server base station needs to actively send an SCN-RSP message to the terminal, the message does not include the information of the neighboring base station in the cell-disabled state (described in detail in the above example, and is not further described herein).
  • the terminal After receiving the NBR-ADV and the SCN-RSP message for the neighboring base station, the terminal can directly avoid scanning the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • the base station can acquire the target base station in the cell-disabled state by the interaction of the information with the target base station at the same time, and the base station does not include the cell-disabled state after transmitting the HO-CMD message to the terminal thereafter. Base station.
  • the terminal After receiving the HO-CMD message of the neighboring base station, the terminal can avoid attempting to re-enter the network to the neighboring base station that is currently in the cell-disabled state, further saving the delay of the handover and the terminal overhead.
  • the base station maintains the information of the neighboring base station through the automatic update mechanism or the terminal reports the SCN-REP message.
  • the serving base station needs to send an NBR-ADV message, the message explicitly indicates which neighboring base stations are in the cell barring state.
  • the terminal After receiving the NBR-ADV message sent by the base station, the terminal updates the locally stored neighbor base station information.
  • Step S 1101: The terminal receives the NBR-ADV message that is sent by the serving base station and includes the cell barring information.
  • the terminal sends an SCN-REQ message to the base station, the neighboring base station information in the cell-disabled state is not included in the message.
  • Step S1201 The terminal checks the neighboring base station information.
  • Step S1202 The terminal excludes the information of the neighboring base station in the cell-disabled state when the terminal sends the SCN-REQ message.
  • the SCN-RSP message returned by the base station does not include the neighbor base station information in the cell-disabled state.
  • the terminal After receiving the SCN-RSP message for the neighboring base station, the terminal can directly avoid scanning the neighboring base station that is currently in the cell-disabled state, which saves the delay of the handover and the terminal overhead.
  • the preferred embodiment 9 receives the SCN-RSP message sent by the base station, and scans the neighboring base stations included in the SCN-RSP message one by one to determine whether the trigger condition for the scan report is met. If scanning to a neighboring base station is currently in a cell-disabled state, the terminal processes and updates the locally stored neighbor base station information. When the terminal sends the SCN-REP message, the neighbor base station information in the cell prohibition state is not included.
  • Step S1301 The terminal checks the phase Neighbor base station information
  • Step S1302 When the terminal sends the SCN-REP message, the neighbor base station information in the cell prohibition state is excluded.
  • the terminal sends a HO-REQ message to actively trigger the handover the HO-REQ message does not include the neighboring base station in the cell-disabled state.
  • Step S 1401 Terminal Checking the information of the neighboring base station
  • Step S1402 Excluding the information of the neighboring base station in the cell-disabled state when the terminal sends the HO-REQ message.
  • the serving base station After receiving the HO-REQ message, the serving base station does not include the base station currently in the cell-disabled state when interacting with the target base station and the HO-CMD message sent to the terminal.
  • the terminal receives the HO-CMD message sent by the serving base station, the terminal determines whether the target base station included in the message is accessible.
  • the conditions for judging whether access is possible include a signal-to-noise ratio (CINR), a received signal strength indicator (RSSI), and the like.
  • Step S1501 The terminal checks neighbors. Base station information; Step S1502: When the terminal sends the HO-IND message, the neighbor base station information in the cell-disabled state is excluded.
  • Step S 1601 The terminal acquires information about whether the target base station is in the cell-disabled state when the network re-enters;
  • FIG. 17 is a flowchart of determining, by the terminal in the embodiment of the present invention, the target base station and the monthly base station to determine a suitable target base station to perform network reentry. As shown in FIG.
  • Step S1701 terminal acquisition The HO-CMD information sent by the serving base station; in step S1702, the terminal selects the appropriate target indicated in the HO-CMD message according to the handover condition. a base station; Step S 1703, the terminal sends a HO-IND message to the serving base station to notify the target base station that it plans to re-enter; Step S 1704, the terminal starts network re-entry to the target base station, and acquires the cell prohibition information of the target base station by scanning.
  • Step S 1705 If the current target base station prohibits access, go to step S 1707, otherwise go to step S 1706; step S 1706, the terminal network re-enters the target base station; step S 1707, the terminal determines whether there are other target base stations, and if yes, enters Step S1702, otherwise proceeding to step S 1708; Step S 1708, the terminal sends a HO-IND message to the serving base station, informing that it cannot reenter all the target base stations. In this example, the terminal further determines whether the target base station is in a cell-disabled state when the network re-enters, ensuring that the handover is correct and valid.
  • the serving base station and/or the terminal acquires indication information about the cell barring of the neighboring base station and performs corresponding processing. Therefore, the target base station that is forbidden to access in the "J, the area can be excluded in advance in the handover process, and reliable target base station access can be realized, thereby improving the handover efficiency of the base station of the wireless communication system, and reducing communication and terminal overhead.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de prétraitement de transfert intercellulaire. Le procédé comprend les étapes suivantes : une station de base serveuse et/ou un terminal reçoivent des informations d'indication de cellule interdite de stations de base voisines de la station de base serveuse, les informations d'indication de cellule interdite étant utilisées pour indiquer si les stations de base voisines sont dans un état de cellule interdite ; et la station de base serveuse et/ou le terminal traite des messages interactifs pendant le processus d'analyse et/ou de transfert intercellulaire conformément aux informations d'indication de cellule interdite. Conformément à la présente invention, l'efficacité du transfert intercellulaire d'une station de base d'un système de communication sans fil est améliorée et le surplus de données utilisées dans les communications et le terminal est réduit.
PCT/CN2010/078790 2009-12-08 2010-11-16 Procédé de prétraitement de transfert intercellulaire WO2011069405A1 (fr)

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CN200910211966.9A CN102088745B (zh) 2009-12-08 2009-12-08 切换预处理方法
CN200910211966.9 2009-12-08

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WO2011069405A1 true WO2011069405A1 (fr) 2011-06-16

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CN102869051A (zh) * 2011-07-07 2013-01-09 中兴通讯股份有限公司 一种邻区切换、上报测量信息的方法及设备
US8798633B2 (en) * 2012-08-22 2014-08-05 Intel Corporation Positioning-assisted cell selection and handover for LTE
WO2019008143A1 (fr) 2017-07-07 2019-01-10 Sony Mobile Communications Inc. Sélection de cellule cible à partir de cellules candidates sur la base de restrictions d'accès comprenant au moins un niveau de répétition régulé respectif pour chaque cellule candidate
CN110798845B (zh) * 2018-08-01 2023-05-02 中国电信股份有限公司 网络设备状态信息开放方法和系统、源基站和外部服务器
CN114423056A (zh) * 2020-10-28 2022-04-29 大唐移动通信设备有限公司 小区切换方法、源基站和目标基站

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WO2009043002A2 (fr) * 2007-09-28 2009-04-02 Interdigital Patent Holdings, Inc. Procédé et appareil pour la prise en charge des services de nœud local b
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CN101547495A (zh) * 2008-03-27 2009-09-30 华为技术有限公司 小区重选的方法、终端及系统
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CN102088745B (zh) 2015-05-20

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