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WO2011069405A1 - 切换预处理方法 - Google Patents

切换预处理方法 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
Authority
WO
WIPO (PCT)
Prior art keywords
base station
terminal
cell
message
neighboring base
Prior art date
Application number
PCT/CN2010/078790
Other languages
English (en)
French (fr)
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.)
Filing date
Publication date
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/zh

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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

本发明公开了一种切换预处理方法，该方法包括：服务基站和/或终端接收服务基站的相邻基站的小区禁止指示信息，其中，小区禁止指示信息用于指示相邻基站是否处于小区禁止状态；服务基站和/或终端根据小区禁止指示信息对扫描和/或切换过程中交互的消息进行处理。通过本发明改善了无线通信系统基站切换效率，降低了通信和终端开销。

Description

切换预处理方法 技术领域 本发明涉及通信领域， 具体而言， 涉及一种切换预处理方法。 背景技术 通常， 无线通信系统为了能够大范围的为用户提供无线通信， 需要部署 覆盖范围大的基站。 这种基站通常称为宏基站 （Macro BS ), 其覆盖的小区 通常称为宏区 （Macro Cell ), —个宏基站最大可覆盖方圓 2-3公里的区域。 同时， 无线通信系统考虑到用户不同的需求以及使用环境，一些覆盖范围小、 发射功率较低的基站被部署从而为用户在某些特定环境或者场景下提供更高 质量的无线通信服务。 这些小型基站包括小基站 （ Micro BS )、 微基站 （Pico BS )、 和仔基站 （ Femto BS ) (也可以称为家庭基站、 个人基站；)。 在一个由基站构成的无线通信系统中， 为了保证服务连续性， 终端在移 动过程中往往需要在基站之间进行切换并重进入目标基站。 图 1是根据相关 技术的无线通信系统基站切换的示意图， 如图 1所示， 终端 A从仔基站 A的 覆盖区域移动到宏基站 A的覆盖区域时，终端需要从仔基站 A切换到宏基站 A;相似的，当终端 B从宏基站 A的覆盖区域移动到宏基站 B的覆盖区域时， 终端需要从宏基站 A切换到宏基站 B。 图 1中示出的切换包括： （ 1 ) 网络拓朴的获取和测量， 由基站发送网络 的拓朴信息， 为终端提供附近基站的情况， 终端对附近基站进行测量并上报； ( 2 ) 切换的发起， 终端和基站才艮据系统设定的切换门限及测量结果判断是 否需要触发切换； （3 ) 执行切换， 终端和月艮务基站以及目标基站之间通过一 系列的消息完成切换参数以及状态信息的交互； （ 4 ) 网络重入， 终端与目标 基站进行同步， 获取上下行的传输参数， 建立新的数据传输连接。 为了保证 月艮务质量， 终端在整个切换过程中必须尽可能控制开销， 减少无用的扫描、 消息交互、 和重入以减小整体切换开销和延迟。 在系统运行中基站可能因为某些原因 （例如， 负载较高或者回程连接断 开等）， 在一段时间内将辅超帧头第一子包的小区禁止信息设置为 1 , 即将基 站设置为处于小区禁止状态， 以防止终端在此期间进入或者重入到该基站。 目前， 终端及艮务基站在切换时未充分考虑相邻基站处于小区禁止状态 时的处理， 而釆用传统的切换处理方法会导致终端尝试切换以及网络重入到 小区禁止的基站， 导致终端切换时延较长甚至出现掉话， 从而严重影响服务 质量。 发明内容 针对相关技术中在切换时未对处于小区禁止状态的基站进行处理而导致 的终端切换时延较长甚至掉话的问题而提出本发明， 为此， 本发明的主要目 的在于提供一种切换预处理方法， 以解决上述问题。 为了实现上述目的， 根据本发明的一个方面， 提供了一种切换预处理方 法。 才艮据本发明的切换预处理方法包括：月艮务基站和 /或终端接收艮务基站的 相邻基站的小区禁止指示信息， 其中， 小区禁止指示信息用于指示相邻基站 是否处于小区禁止状态；服务基站和 /或终端根据小区禁止指示信息对扫描和 /或切换过程中交互的消息进行处理。 优选地，服务基站接收相邻基站的小区禁止指示信息之前，该方法包括： 预定网元向月艮务基站发送月艮务基站的相邻基站的小区禁止指示信息， 其中， 预定网元至少包括以下之一： 自组织网络服务器、 终端、 相邻基站。 优选地， 终端接收艮务基站的相邻基站的小区禁止指示信息之前， 该方 法还包括： 服务基站和 /或相邻基站发送服务基站的相邻基站的小区禁止指示 信息。 优选地， 艮务基站和 /或终端才艮据小区禁止指示信息对扫描和 /或切换过 程中交互的消息进行处理包括： 在交互的消息中排除处于小区禁止状态的相 邻基站的信息。 优选地， 艮务基站和 /或终端才艮据小区禁止指示信息对扫描和 /或切换过 程中交互的消息进行处理包括： 在交互的消息中携带用于指示相邻基站处于 'J、区禁止状态的指示信息。 优选地， 服务基站接收相邻基站的小区禁止指示信息包括： 服务基站接 收自组织网络服务器发送的携带有相邻基站信息的消息； 服务基站从携带有 相邻基站信息的消息中获取相邻基站的小区禁止指示信息。 优选地， 服务基站接收相邻基站的小区禁止指示信息包括： 服务基站对 相邻基站进行扫描， 以接收相邻基站的小区禁止指示信息。 优选地， 艮务基站接收相邻基站的小区禁止指示信息包括： 终端或月艮务 基站发起切换； 服务基站向切换的候选目标基站发送消息， 并接收来自候选 目标基站的响应消息； 服务基站从响应消息中获取候选目标基站的小区禁止 指示信息。 优选地， 服务基站对扫描和 /或切换过程中交互的消息进行处理包括： 服 务基站在向终端发送的以下消息至少之一中排除处于小区禁止状态的相邻基 站的信息： 邻区列表消息、 扫描响应消息、 切换命令消息。 优选地， 服务基站对扫描和 /或切换过程中交互的消息进行处理包括： 服 务基站在向终端发送的消息中携带指示信息， 其中， 向终端发送的消息包括 邻区列表消息， 指示信息用于指示服务基站的相邻基站中处于小区禁止状态 的相邻基站。 优选地， 终端接收相邻基站的小区禁止指示信息包括： 终端对相邻基站 进行扫描， 以接收每个相邻基站的小区禁止指示信息。 优选地， 终端对相邻基站进行扫描至少包括以下之一： 终端选择频率， 并开始盲扫搜寻； 服务基站根据本次保存的相邻基站信息选择需要进行扫描 的相邻基站， 并开始进行扫描； 服务基站通过扫描响应消息向终端发送需要 扫描的相邻基站的信息的消息， 终端对需要扫描的相邻基站进行扫描。 优选地， 在终端接收相邻基站的小区禁止指示信息之后， 终端对扫描和 / 或切换过程中交互的消息进行处理包括： 终端通过扫描报告消息将处于小区 禁止状态的相邻基站的小区禁止指示信息发送给服务基站。 优选地， 在终端接收相邻基站的小区禁止指示信息之后， 终端对扫描和 / 或切换过程中交互的消息进行处理包括： 终端向服务基站发送预定消息， 其 中， 预定消息中排除处于小区禁止状态的相邻基站的信息， 预定消息至少包 括以下之一： 切换指示信息、 扫描报告消息、 切换请求消息。 优选地， 终端接收相邻基站的小区禁止指示信息包括： 终端在网络重入 时， 接收网络重入的目标基站的小区禁止指示信息， 其中， 目标基站是相邻 基站之一 优选地， 在终端 -据目标基站的小区禁止指示消息确定目标基站的状态 为小区禁止状态的情况下， 上述方法还包括： 终端从侯选目标基站中确定另 一基站作为目标基站进行尝试网络重入， 其中， 候选目标基站是相邻基站的 子集或集合； 如果终端确定的候选目标基站处于可接入状态， 则终端完成网 络重入到确定的候选目标基站。 通过本发明， 釆用月艮务基站和 /或终端在扫描和 /或切换过程中接收处于 小区禁止状态的相邻基站信息并在交互的消息中对相邻基站的小区禁止信息 进行处理， 解决了相关技术中在切换时未提前对处于小区禁止状态的基站进 行处理而导致的终端切换时延较长甚至掉话的问题， 进而实现了可靠的目标 基站接入，从而改善了无线通信系统基站切换效率， 降低了通信和终端开销。 本发明的其它特征和优点将在随后的说明书中阐述， 并且， 部分地从说 明书中变得显而易见， 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是根据相关技术的无线通信系统基站切换的示意图； 图 2是 居本发明实施例的切换预处理方法的流程图； 图 3是根据本发明实施例的基站根据包含小区禁止信息的自动更新信息 对相邻基站信息进行处理的流程图； 图 4是才艮据本发明实施例的基站发送 NBR-ADV消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 5是根据本发明实施例的基站发送 SCN-RSP消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 6是根据本发明实施例的基站发送 HO-CMD消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 7是才艮据本发明实施例的终端对相邻基站扫描并处理相邻基站信息的 流程图； 图 8 是根据本发明实施例的基站根据接收到的包含小区禁止信息的
SCN-REP消息对相邻基站信息进行处理的流程图； 图 9 是根据本发明实施例的基站根据收到的包含小区禁止信息的 HO-RSP消息对相邻基站信息进行处理的流程图； 图 10 是根据本发明实施例的基站对相邻基站进行直接扫描获取到小区 禁止状态相关信息并处理相邻基站信息的流程图； 图 11 是根据本发明实施例的终端根据收到的包含小区禁止信息的 NBR-ADV消息对相邻基站信息进行处理的流程图； 图 12是才艮据本发明实施例的终端发送 SCN-REQ消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 13是才艮据本发明实施例的终端发送 SCN-REP消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 14是才艮据本发明实施例的终端发送 HO-REQ消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 15是 居本发明实施例的终端发送 HO-IND消息时排除处于小区禁 止状态相邻基站信息的流程图； 图 16 是根据本发明实施例的终端在网络重入时根据获取接收到的小区 禁止信息处理相邻基站信息的流程图； 图 17 是 居本发明实施例的终端与目标基站以及月艮务基站交互确定合 适的目标基站进行网络重入的流程图。 具体实施方式 需要说明的是， 在不冲突的情况下， 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 在以下实施例中， 在附图的流程图示出的步 4聚可以在诸如一组计算机可 执行指令的计算机系统中执行， 并且， 虽然在流程图中示出了逻辑顺序， 但 是在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤。 需要说明的是， 以下实施例中所称的基站可以包括宏基站、 小基站、 微 基站、 仔基站， 服务基站是指终端当前接入的基站， 在以下实施例中小区禁 止指基站发送的辅超帧头中的小区禁止信息位为 1 , 但不限于此。 在本实施例中， 提供了一种切换预处理方法， 该方法包括： 月艮务基站和 / 或终端接收相邻基站的小区禁止指示信息并处理， 图 2是根据本发明实施例 的切换预处理方法的流程图， 如图 2所示， 该方法包括如下步^^ 步骤 S201 , 服务基站和 /或终端接收该服务基站的相邻基站的小区禁止 指示信息， 其中， 小区禁止指示信息用于指示相邻基站是否处于小区禁止状 态。 步骤 S202, 艮务基站和 /或终端， 根据小区禁止指示信息对扫描和 /或切 换过程中交互的消息进行处理。 通过上述步骤，月艮务基站和 /或终端可以获知相邻基站是否处于小区禁止 状态，进行可以使服务基站和 /或终端根据相邻基站是否处于小区禁止状态而 进行相应的处理。 优选地， 在步骤 S202 中， 对交互的消息进行的处理可以是在该消息中 排除处于小区禁止状态的相邻基站的信息， 也可以是在该消息中携带用于指 示相邻基站是否处于小区禁止状态的指示信息 （即， 主动指示处于小区禁止 状态的相邻基站；)。 优选地， 服务基站可以通过以下至少之一接收相邻基站的小区禁止状态 信息： 服务基站通过自动邻区更新获取相邻基站是否处于小区禁止状态的信 息； 服务基站通过接收目标基站发送的切换响应 （HO-RSP ) 消息获取相邻 基站是否处于小区禁止状态的信息； 服务基站通过接收终端发送的扫描报告 ( SCN-REP ) 消息获取相邻基站是否处于小区禁止状态的信息； 服务基站自 己对相邻基站进行扫描， 获取相邻基站是否处于小区禁止状态的信息。 优选地， 终端可以通过以下之一接收相邻基站的小区禁止指示信息： 终 端通过接收服务基站发送的消息， 例如， 邻区列表 （NBR-ADV ) 消息， 获 取相邻基站是否处于小区禁止状态的信息； 终端自己对相邻基站进行扫描， 获取相邻基站是否处于小区禁止状态的信息； 终端在网络重入时接收作为目 标基站的相邻基站是否处于小区禁止状态的信息。 优选地， 在步骤 S204中， 服务基站可以在但不限于 NBR-ADV消息、 扫描响应 （SCN-RSP )、 切换命令 （HO-CMD ) 中排除处于小区禁止状态的 相邻基站 （即， 排除处于小区禁止状态的相邻基站的信息）。 优选地， 在步骤 S204中， 终端可以在但不限于扫描请求 （SCN-REQ ) 消息、扫描 4艮告 ( SCN-REP )消息、切换请求（ HO-REQ )、切换指示（ HO-IND ) 消息中排除处于小区禁止状态的相邻基站 （即， 排除处于小区禁止状态的相 邻基站的信息）。 优选地， 在步骤 S204 中， 月艮务基站可以在但不限于在向终端发送 NBR-ADV 消息时指示处于小区禁止状态的相邻基站； 终端可以在但不限于 在向服务基站发送 SCN-REP消息时指示处于小区禁止状态的相邻基站。 下面将结合优选实施例进行描述。 优选实施例 1 在本实例中， 基站通过自动更新机制维护与周围基站之间的邻居关系， 即， 当有新基站加入或是某些基站发生故障无法工作时， 基站之间通过自组 织网络服务器 （ SON Server ) 完成邻区列表更新。 当相邻基站由于负载较高 或者回程连接断开而暂时禁止终端接入时， 自组织 艮务器发给基站的自动邻 居列表更新交互消息中应包含小区禁止信息。 图 3是根据本发明实施例的基站根据包含小区禁止信息的自动更新信息 对相邻基站信息进行处理的流程图， 如图 3所示， 基站收到相邻基站的小区 禁止信息后， 相应的处理本地保存的相邻基站信息， 该流程包括以下步骤： 步骤 S301 : 基站接收到包含小区禁止信息的自动更新邻居列表信息； 步骤 S302: 基站处理相邻基站信息， 例如， 更新本地保存的相邻基站的 小区禁止信息。 当服务基站需要发送 NBR-ADV消息时， 可以在 NBR-ADV消息中不包 括处于小区禁止状态的相邻基站信息， 图 4是根据本发明实施例的基站发送 NBR-ADV消息时排除处于小区禁止状态相邻基站信息的流程图， 如图 4所 示， 该流程包括以下步 4聚： 步骤 S401： 基站检查本地保存的相邻基站信息； 步骤 S402:基站发送 NBR-ADV消息时排除处于小区禁止状态的相邻基 站信息。 在终端收到排除了小区禁止相邻基站的 NBR-ADV消息后， 可直接避免 扫描当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端开销。 优选实施例 2 服务基站发送 NBR-ADV消息之后， 通过自动更新机制发现出现了新的 相邻基站进入了小区禁止状态， 服务基站相应的更新本地保存的相邻基站信 息。而在此期间终端根据之前收到的 NBR-ADV消息中所含的相邻基站列表， 发送 SCN-REQ消息给服务基站时包含了新出现的进入小区禁止状态的相邻 基站。 当服务器基站收到终端发送的 SCN-REQ消息后， 根据当前最新的相 邻基站信息， 在发送 SCN-RSP消息时不包含进入小区禁止状态的基站。 图 5是根据本发明实施例的基站发送 SCN-RSP消息时排除处于小区禁 止状态相邻基站信息的流程图， 如图 5所示， 该流程包括以下步骤： 步骤 S501 : 基站检查本地保存的相邻基站信息； 步骤 S502: 基站发送 SCN-RSP消息时排除处于小区禁止状态的相邻基 站信息。 终端接收到排除了小区禁止相邻基站的 SCN-RSP 消息后， 可直接避免 扫描当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端开销。 优选实施例 3 服务基站发现终端的信号越来越弱， 需要被切换到其他相邻基站上。 服 务基站向相邻基站发送 HO-REQ消息请求切换，需要注意的是服务基站根据 自动更新机制在本地保存的最新相邻基站信息， HO-REQ消息只发送给当前 不处于小区禁止状态的相邻基站。 服务基站选择若千候选的目标基站后， 主 动发起切换。 在月艮务基站发送 HO-CMD 消息给终端时， 同样的， 月艮务基站 需注意将处于小区禁止状态的相邻基站从 HO-CMD消息中排除。 图 6是根据本发明实施例的基站发送 HO-CMD消息时排除处于小区禁 止状态相邻基站信息的流程图， 如图 6所示， 该流程包括以下步骤： 步骤 S601 : 基站检查本地保存的相邻基站信息； 步骤 S602: 基站发送 HO-CMD消息时排除处于小区禁止状态的相邻基 站信息。 终端接收到排除了小区禁止相邻基站的 HO-CMD 消息后， 可避免尝试 网络重入到当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端 开销。 优选实施例 4 终端发现来自服务基站信号越来越弱， 需要切换到其他相邻基站上才能 继续工作。 终端向服务基站发送 HO-REQ消息主动发起切换。 服务基站收到 终端发送的 HO-REQ消息后， 服务基站向相邻基站发送 HO-REQ消息请求 切换， 需要注意的是服务基站根据自动更新机制在本地保存的最新相邻基站 信息， HO-REQ消息只发送给当前不处于小区禁止状态的相邻基站。 服务基 站选择若千候选的目标基站后， 服务基站发送 HO-CMD 消息给终端， 同样 的， 服务基站需注意将处于小区禁止状态的相邻基站从 HO-CMD 消息中排 除。 图 6是 居本发明实施例的基站发送 HO-CMD消息时排除处于小区禁 止状态相邻基站信息的流程图， 如图 6所示， 该流程包括以下步骤： 步骤 S601 : 基站检查本地保存的相邻基站信息； 步骤 S602: 基站发送 HO-CMD消息时排除处于小区禁止状态的相邻基 站信息。 终端接收到排除了小区禁止相邻基站的 HO-CMD 消息后， 可避免尝试 网络重入到当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端 开销。 优选实施例 5 在基站不支持自动更新机制的情况下， 基站发给终端的 NBR-ADV消息 以及 SCN-RSP 消息中并未排除目前处于小区禁止状态的相邻基站信息。 终 端收到服务基站发来的 SCN-RSP消息后， 对 SCN-RSP消息中包含的相邻基 站逐个进行扫描， 判断是否满足扫描上报的触发条件。 此外， 终端也可能选 择频率进行盲扫搜寻相邻基站或是在处于闲置模式（ Idle Mode ) 时根据之前 接收到的相邻基站信息自发选择相邻基站并对选择的相邻基站进行扫描。 如 果扫描到某个相邻基站目前是处于小区禁止状态， 终端处理并更新本地保存 的相邻基站信息。 图 7是根据本发明实施例的终端对相邻基站扫描并处理相邻基站信息的 流程图， 如图 7所示， 该流程包括以下步骤： 步骤 S701 : 终端对相邻基站进行扫描， 获取相邻基站是否处于小区禁止 状态的信息； 步 4聚 S702: 终端处理相邻基站信息。 然后， 终端在发送 SCN-REP 消息时包含处于小区禁止状态的相邻基站 信息， 并指示其正处于小区禁止状态。 当基站收到终端发来的包含小区禁止 信息的 SCN-REP消息后， 基站相应的处理本地保存的相邻基站信息。 图 8 是根据本发明实施例的基站根据接收到的包含小区禁止信息的 SCN-REP消息对相邻基站信息进行处理的流程图， 如图 8所示， 该流程包括 以下步 4聚： 步骤 S801 :基站接收到终端发来的包含小区禁止信息的 SCN-REP消息； 步 4聚 S802: 基站处理相邻基站信息。 才艮据终端的扫描上 ·ί艮， 如果发现有原本处于小区禁止状态的基站现在处 于小区可接入状态， 或是原本处于小区可接入状态的激战现在处于小区禁止 状态， 基站要相应的更新自己的相邻基站信息， 并在此之后当基站需要发送 与切换相关的消息如 HO-CMD 时排除处于小区禁止状态的相邻基站信息。 终端收到排除了小区禁止相邻基站的 HO-CMD 消息后， 可避免尝试网络重 入到当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端开销。 优选实施例 6 在基站不支持自动更新机制以及终端在 SCN-REP 消息中并不上报处于 小区禁止状态基站的情况下， 在基站发给终端的 NBR- ADV 消息以及 SCN-RSP消息中都包含所有相关相邻基站信息，并未排除目前处于小区禁止 状态的相邻基站信息。 同样的， 终端发送给基站的 SCN-REQ以及 SCN-REP 消息中也并未排除处于小区禁止状态的相邻基站信息。 当终端主动发送 HO-REQ消息发起切换时或是由基站主动发起切换时， 基站根据自己保存的 相邻基站信息， 向每个可能的目标基站发送 HO-REQ消息， 通过骨千网交互 切换信息。对于目前处于小区禁止状态的基站，收到其他基站发来的 HO-REQ 消息后， 基站回复 HO-RSP消息时直接表明自己处于小区禁止状态。 当服务基站收到候选的目标基站发来的包含小区禁止信息的 HO-RSP消 息时， 服务基站相应的处理并更新自己的相邻基站信息， 图 9是根据本发明 实施例的基站根据收到的包含小区禁止信息的 HO-RSP消息对相邻基站信息 进行更新的流程图， 如图 9所示， 该流程包括以下步骤： 步骤 S901 :基站接收到目标基站发来的包含小区禁止信息的 HO-RSP消 息； 步骤 S902: 基站处理相邻基站信息。 基站在其后给终端发送 HO-CMD 消息时， 不包括处于小区禁止状态的 基站。 终端收到排除了小区禁止相邻基站的 HO-CMD 消息后， 可避免尝试 网络重入到当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端 开销。 优选实施例 7 基站可以在某些特定情况下对相邻基站进行扫描， 例如， 仔基站可以在 初始化以及处于低负载模式 （ Low Duty Mode ) 时对相邻基站进行扫描， 从 而获得哪些相邻基站处于小区禁止状态的信息。 仔基站 居扫描结果相应的 处理并更新自己本地保存的相邻基站信息。 图 10 是根据本发明实施例的基 站对相邻基站进行直接扫描获取到小区禁止状态相关信息并处理相邻基站信 息的流程图， 如图 10所示， 该流程包括以下步 4聚： 步骤 S 1001 : 基站对相邻基站进行扫描; 步骤 S I 002: 基站获取相邻基站是否处于小区禁止状态的指示信息； 步 4聚 S 1003: 基站处理相邻基站信息。 当服务基站需要发送 NBR-ADV消息时， 消息中不包括处于小区禁止状 态的相邻基站信息。 当服务器基站需要主动发送 SCN-RSP 消息给终端时， 消息中不包括处于小区禁止状态的相邻基站信息 （在上述实例中已经进行过 详细说明， 在此不再赞述）。 终端接收到排除了小区禁止相邻基站的 NBR-ADV以及 SCN-RSP消息后，可直接避免扫描当前处于小区禁止状态的 相邻基站， 节省了切换的时延以及终端开销。 优选地， 仔基站可同时通过与目标基站之间切换信息的交互， 从而获取 哪些目标基站正处于小区禁止状态， 仔基站在其后给终端发送 HO-CMD 消 息时， 不包括处于小区禁止状态的基站。 终端收到排除了小区禁止相邻基站 的 HO-CMD 消息后， 可避免尝试网络重入到当前处于小区禁止状态的相邻 基站， 进一步节省了切换的时延以及终端开销。 优选实施例 8 基站通过自动更新机制或是终端通过 SCN-REP 消息上报维护相邻基站 信息。 当服务基站需要发送 NBR-ADV消息时， 消息中显式的指出哪些相邻 基站处于小区禁止状态。 终端收到基站发来的 NBR-ADV消息后， 更新本地 保存的相邻基站信息。 图 11 是根据本发明实施例的终端根据收到的包含小区禁止信息的 NBR-ADV消息对相邻基站信息进行处理的流程图， 如图 11所示， 该流程包 括以下步 4聚： 步骤 S 1101 :终端接收到服务基站发来的包含小区禁止信息的 NBR-ADV 消息； 步 4聚 S 1102: 终端处理相邻基站信息。 当终端发送 SCN-REQ消息给基站时， 消息中不包括处于小区禁止状态 的相邻基站信息。 图 12是根据本发明实施例的终端发送 SCN-REQ消息时排 除处于小区禁止状态相邻基站信息的流程图， 如图 12 所示， 该流程包括以 下步骤： 步骤 S 1201： 终端检查相邻基站信息； 步骤 S 1202: 终端发送 SCN-REQ 消息时排除处于小区禁止状态的相邻 基站信息。 相应的， 基站返回的 SCN-RSP 消息中也不包含处于小区禁止状态的相 邻基站信息。 终端收到排除了小区禁止相邻基站的 SCN-RSP 消息后， 可直 接避免扫描当前处于小区禁止状态的相邻基站， 节省了切换的时延以及终端 开销。 优选实施例 9 终端接收到月艮务基站发来的 SCN-RSP消息后， 对 SCN-RSP消息中包含 的相邻基站逐个进行扫描， 判断是否满足扫描上报的触发条件。 如果扫描到 某个相邻基站目前是处于小区禁止状态， 终端处理并更新本地保存的相邻基 站信息。 在终端发送 SCN-REP 消息时不包含处于小区禁止状态的相邻基站 信息。 图 13是才艮据本发明实施例的终端发送 SCN-REP消息时排除处于小区禁 止状态相邻基站信息的流程图， 如图 13所示， 该流程包括以下步骤： 步骤 S 1301： 终端检查相邻基站信息； 步骤 S 1302:终端发送 SCN-REP消息时排除处于小区禁止状态的相邻基 站信息。 当终端发送 HO-REQ消息主动触发切换时， HO-REQ消息中不包含处于 小区禁止状态的相邻基站。 图 14是才艮据本发明实施例的终端发送 HO-REQ 消息时排除处于小区禁止状态相邻基站信息的流程图， 如图 14 所示， 该流 程包括以下步 4聚： 步骤 S 1401： 终端检查相邻基站信息； 步骤 S 1402: 终端发送 HO-REQ消息时排除处于小区禁止状态的相邻基 站信息。 服务基站接收到 HO-REQ消息后，相应的在跟目标基站交互时以及发给 终端的 HO-CMD 消息中不包括当前处于小区禁止状态的基站。 终端收到排 除了小区禁止相邻基站的 HO-CMD 消息后， 可避免尝试网络重入到当前处 于小区禁止状态的相邻基站， 节省了切换的时延以及终端开销。 优选实施例 10 当终端收到服务基站发送的 HO-CMD 消息时， 终端逐个判断消息中包 含的目标基站是否可接入。 判断是否可接入的条件包括信噪比 （CINR ), 接 收信号强度指示 (RSSI)等指标。 如果发现某个目标基站满足切换条件， 且终 端根据自己保存的相邻基站的信息， 该目标基站当前不处于小区禁止状态， 则终端发送 HO-IND消息给服务基站告知其选中的目标基站， 图 15是根据 本发明实施例的终端发送 HO-IND消息时排除处于小区禁止状态相邻基站信 息的流程图， 如图 15所示， 该流程包括以下步 4聚： 步骤 S 1501 : 终端检查相邻基站信息； 步骤 S 1502: 终端发送 HO-IND消息时排除处于小区禁止状态的相邻基 站信息。 图 16 是才艮据本发明实施例的终端在网络重入时才艮据获取到的小区禁止 信息处理相邻基站信息的流程图， 如图 16所示， 该流程包括以下步骤： 步骤 S 1601 : 终端在网络重入时获取目标基站是否处于小区禁止状态的 信息； 步 4聚 S 1602: 终端处理相邻基站信息。 如果终端在网络重入时发现目标基站的辅超帧头的小区禁止信息位为 0, 则进一步完成网络重入过程， 否则如果终端发现目标基站处于小区禁止 状态， 终端更新相邻基站信息， 并继续判断其他的目标基站是否可接入。 如 果终端发现所有的目标基站都不可接入， 则终端发送 HO-IND消息给服务基 站指示所有目标基站都无法接入。 图 17 是 居本发明实施例的终端与目标基站以及月艮务基站交互确定合 适的目标基站进行网络重入的流程图， 如图 17所示， 该流程包括以下步骤： 步骤 S 1701 , 终端获取服务基站发送的 HO-CMD信息； 步骤 S 1702,终端才艮据切换条件选择 HO-CMD消息中指示的合适的目标 基站; 步骤 S 1703 , 终端发送 HO-IND消息给服务基站告知其计划重入的目标 基站； 步骤 S 1704, 终端开始网络重入到目标基站， 通过扫描获取该目标基站 的小区禁止信息 步骤 S 1705 , 如果当前目标基站禁止接入， 则进入步骤 S 1707, 否则进 入步骤 S 1706; 步骤 S 1706, 终端网络重入到目标基站； 步骤 S 1707,终端判断是否还有其他目标基站，如果是则进入步骤 S 1702, 否则进入步骤 S 1708; 步骤 S 1708, 终端发送 HO-IND消息给服务基站， 告知其无法重入所有 的目标基站。 在该实例中， 终端在网络重入时进一步判断目标基站是否处于小区禁止 状态， 保证了切换的正确和有效。 综上所述， 通过上述实施例， 服务基站和 /或终端获取相邻基站的与小区 禁止有关的指示信息并进行相应的处理。 从而可以在切换过程中提前排除 'J、 区禁止接入的目标基站， 实现可靠的目标基站接入， 从而改善无线通信系统 基站切换效率， 降低通信和终端开销。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或 者将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软 件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对 于本领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1. 一种切换预处理方法， 其特征在于， 包括：
月艮务基站和 /或终端接收所述月艮务基站的相邻基站的小区禁止指示 信息， 其中， 所述小区禁止指示信息用于指示所述相邻基站是否处于小 区禁止状态； 所述艮务基站和 /或所述终端才艮据所述小区禁止指示信息对扫描和 / 或切换过程中交互的消息进行处理。
2. 居权利要求 1所述的方法， 其特征在于， 所述艮务基站接收所述相邻 基站的小区禁止指示信息之前， 所述方法还包括：
预定网元向所述月艮务基站发送所述月艮务基站的相邻基站的小区禁止 指示信息， 其中， 所述预定网元至少包括以下之一： 自组织网络服务器、 所述终端、 所述相邻基站。
3. 居权利要求 1所述的方法， 其特征在于， 所述终端接收所述艮务基站 的相邻基站的小区禁止指示信息之前， 所述方法还包括：
所述艮务基站和 /或所述相邻基站发送所述艮务基站的相邻基站的 小区禁止指示信息。
4. 居权利要求 1所述的方法， 其特征在于， 所述艮务基站和 /或所述终端 根据所述小区禁止指示信息对扫描和 /或切换过程中交互的消息进行处 理包括：
在所述交互的消息中排除处于小区禁止状态的相邻基站的信息。
5. 居权利要求 1所述的方法， 其特征在于， 所述艮务基站和 /或所述终端 根据所述小区禁止指示信息对扫描和 /或切换过程中交互的消息进行处 理包括：
在所述交互的消息中携带用于指示相邻基站处于小区禁止状态的指 示信息。
6. 居权利要求 2所述的方法， 其特征在于， 所述艮务基站接收所述相邻 基站的小区禁止指示信息包括： 所述服务基站接收所述自组织网络服务器发送的携带有所述相邻基 站信息的消息；
所述服务基站从所述携带有所述相邻基站信息的消息中获取所述相 邻基站的小区禁止指示信息。
7. 居权利要求 2所述的方法， 其特征在于， 所述艮务基站接收所述相邻 基站的小区禁止指示信息包括：
所述艮务基站对所述相邻基站进行扫描， 以接收所述相邻基站的小 区禁止指示信息。
8. 居权利要求 2所述的方法， 其特征在于， 所述艮务基站接收所述相邻 基站的小区禁止指示信息包括：
所述终端或所述艮务基站发起切换；
所述服务基站向切换的候选目标基站发送消息， 并接收来自所述候 选目标基站的响应消息； 所述服务基站从所述响应消息中获取所述候选目标基站的小区禁止 指示信息。
9. 才艮据权利要求 3、 4、 6、 7或 8所述的方法， 其特征在于， 所述月艮务基站 对扫描和 /或切换过程中交互的消息进行处理包括：
所述服务基站在向所述终端发送的以下消息至少之一中排除处于小 区禁止状态的相邻基站的信息： 邻区列表消息、 扫描响应消息、 切换命 令消息。
10. 才艮据权利要求 3、 5、 6、 7或 8所述的方法， 其特征在于， 所述月艮务基站 对扫描和 /或切换过程中交互的消息进行处理包括：
所述服务基站在向所述终端发送的消息中携带所述指示信息，其中， 向所述终端发送的消息包括邻区列表消息， 所述指示信息用于指示所述 服务基站的相邻基站中处于小区禁止状态的相邻基站。
11. 居权利要求 1所述的方法， 其特征在于， 所述终端接收所述相邻基站 的小区禁止指示信息包括：
所述终端对所述相邻基站进行扫描， 以接收每个相邻基站的小区禁 止指示信息。
12. 居权利要求 11所述的方法， 其特征在于， 所述终端对所述相邻基站进 行扫描至少包括以下之一：
所述终端选择频率， 并开始盲扫搜寻；
所述服务基站根据本次保存的相邻基站信息选择需要进行扫描的相 邻基站， 并开始进行扫描；
所述艮务基站通过扫描响应消息向所述终端发送需要扫描的相邻基 站的信息的消息， 所述终端对所述需要扫描的相邻基站进行扫描。
13. 根据权利要求 11或 12所述的方法， 其特征在于， 在所述终端接收所述 相邻基站的小区禁止指示信息之后， 所述终端对扫描和 /或切换过程中交 互的消息进行处理包括：
所述终端通过扫描 4艮告消息将处于小区禁止状态的相邻基站的小区 禁止指示信息发送给所述服务基站。
14. 根据权利要求 11或 12所述的方法， 其特征在于， 在所述终端接收所述 相邻基站的小区禁止指示信息之后， 所述终端对扫描和 /或切换过程中交 互的消息进行处理包括：
所述终端向所述服务基站发送预定消息， 其中， 所述预定消息中排 除处于小区禁止状态的相邻基站的信息， 所述预定消息至少包括以下之 一： 切换指示信息、 扫描报告消息、 切换请求消息。
15. 居权利要求 1所述的方法， 其特征在于， 所述终端接收所述相邻基站 的小区禁止指示信息包括：
所述终端在网络重入时， 接收网络重入的目标基站的小区禁止指示 信息， 其中， 所述目标基站是所述相邻基站之一。
16. 居权利要求 15所述的方法， 其特征在于， 在所述终端 -据所述目标基 站的小区禁止指示消息确定所述目标基站的状态为小区禁止状态的情况 下， 所述方法还包括：
所述终端从所述侯选目标基站中确定另一基站作为目标基站进行尝 试网络重入， 其中， 所述候选目标基站是所述相邻基站的子集或集合； 如果终端确定的候选目标基站处于可接入状态， 则终端完成网络重 入到所述确定的候选目标基站。
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