CN102088745B - Switching pre-processing method - Google Patents
Switching pre-processing method Download PDFInfo
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- CN102088745B CN102088745B CN200910211966.9A CN200910211966A CN102088745B CN 102088745 B CN102088745 B CN 102088745B CN 200910211966 A CN200910211966 A CN 200910211966A CN 102088745 B CN102088745 B CN 102088745B
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- 238000000034 method Methods 0.000 title claims abstract description 116
- 238000007781 pre-processing Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 57
- 230000004044 response Effects 0.000 claims description 10
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical group CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 7
- 238000004891 communication Methods 0.000 abstract description 17
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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
Abstract
The present invention discloses a switching pre-processing method, the method comprises the steps as follows: a service base station and/or a terminal receive a cell bar indication message from an adjacent base station of the service base station, wherein the cell bar indication message is used for indicating whether the adjacent base station is in a cell bar state; and the service base station and/or the terminal process the interactive messages in the process of scanning and/or switching according to the cell bar indication message. The switching pre-processing method of the present invention improves base station switching efficiency of a wireless communication system, and reduces the cost of communication as well as the cost of terminal.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of switching pre-processing method.
Background technology
In wireless communication system, base station (Base Station, referred to as BS) is the equipment showing Terminal for service, carries out radio communication between base station and terminal by electromagnetic wave.Wireless communication system can provide wireless coverage for the terminal of managing scope definitely by base station, and this geographic range is called community.
Usually, wireless communication system is in order to can, on a large scale for user provides radio communication, need to dispose the large base station of coverage.This base station is commonly referred to macro base station (MacroBS), and its community covered is commonly referred to Hong Qu (Macro Cell), a maximum region covering circumference 2-3 kilometer of macro base station.Meanwhile, wireless communication system considers the demand that user is different and environment for use, and the base station that some coverages are little, transmitting power is lower is deployed thus under some specific environment or scene, provides higher-quality radio communication service for user.These small base stations comprise little base station (Micro BS), micro-base station (Pico BS) and sub-base stations (Femto BS) (also can be called Home eNodeB, personal base station).
At one by the wireless communication system that base station is formed, in order to Deterministic service continuity, terminal often needs to carry out between the base stations switching and to lay equal stress on target approach base station in moving process.Fig. 1 is the schematic diagram switched according to the radio communication system base station of correlation technique, and as shown in Figure 1, when terminal A moves to the overlay area of macro base station A from the overlay area of sub-base stations A, terminal needs to be switched to macro base station A from sub-base stations A; Similar, when terminal B moves to the overlay area of macro base station B from the overlay area of macro base station A, terminal needs to be switched to macro base station B from macro base station A.
Switching shown in Fig. 1 comprises: the acquisition of (1) network topology and measurement, and sent the topology information of network by base station, for terminal provides the situation of neighbouring base station, terminal is measured neighbouring base station and reported; (2) initiation switched, terminal and base station judge whether to need to trigger to switch according to the handoff threshold of default and measurement result; (3) perform switching, between terminal and serving BS and target BS, complete the mutual of handoff parameter and state information by a series of message; (4) network is reentried, and terminal is carried out synchronous with target BS, obtains the transformation parameter of up-downgoing, sets up new transfer of data and connects.In order to guarantee service quality, terminal must control overhead as far as possible in whole handoff procedure, reduces useless scanning, interacting message and reentries to reduce overall handover overhead and delay.
In system cloud gray model, base station may because of some reason (such as, higher or the backhaul of load connect disconnect), within a period of time, the community prohibition information of auxiliary superframe header first attached bag is set to 1, be set to be in cell bar status by base station, enter to prevent terminal or reentry this base station during this period.
At present, process when terminal and serving BS do not take into full account when switching that adjacent base station is in cell bar status, and adopt traditional switching handling method that terminal can be caused to attempt switching and network is reentried the base station that community forbids, cause that terminal switch time delay is longer even occurs call drop, thus have a strong impact on service quality.
Summary of the invention
The problem of the longer even call drop of terminal switch time delay caused for not processing the base station being in cell bar status when switching in correlation technique and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of switching pre-processing method, to solve the problem.
To achieve these goals, according to an aspect of the present invention, a kind of switching pre-processing method is provided.
Switching pre-processing method according to the present invention comprises: indication information is forbidden in the community that serving BS and/or terminal receive the adjacent base station of serving BS, and wherein, community forbids that indication information is used to indicate adjacent base station and whether is in cell bar status; According to community, serving BS and/or terminal forbid that indication information processes mutual message in scanning and/or handoff procedure.
Preferably, before indication information is forbidden in the community of serving BS receiving neighbor bs, the method comprises: indication information is forbidden in predetermined network element sends community from the adjacent base station of serving BS to serving BS, wherein, predetermined network element at least comprises one of following: self-organizing network server, terminal, adjacent base station.
Preferably, before indication information is forbidden in the community of adjacent base station that terminal receives serving BS, the method also comprises: indication information is forbidden in the community that serving BS and/or adjacent base station send the adjacent base station of serving BS.
Preferably, according to community, serving BS and/or terminal forbid that indication information carries out process to mutual message in scanning and/or handoff procedure and comprises: in mutual message, get rid of the information being in the adjacent base station of cell bar status.
Preferably, according to community, serving BS and/or terminal forbid that indication information carries out process to mutual message in scanning and/or handoff procedure and comprises: carry in mutual message and be used to indicate the indication information that adjacent base station is in cell bar status.
Preferably, the community of serving BS receiving neighbor bs forbids that indication information comprises: serving BS is received from the message carrying adjacent base station information that organization network server sends; Indication information is forbidden in the community that serving BS obtains adjacent base station from the message carrying adjacent base station information.
Preferably, the community of serving BS receiving neighbor bs forbids that indication information comprises: serving BS scans adjacent base station, forbids indication information with the community of receiving neighbor bs.
Preferably, the community of serving BS receiving neighbor bs forbids that indication information comprises: terminal or serving BS initiate to switch; Serving BS sends message to the candidate target base station switched, and receives the response message from candidate target base station; Indication information is forbidden in the community that serving BS obtains candidate target base station from response message.
Preferably, serving BS carries out process comprise mutual message in scanning and/or handoff procedure: serving BS the following message sent to terminal one of at least in get rid of the information being in the adjacent base station of cell bar status: Neighboring Cell List message, scan response message, switching command message.
Preferably, serving BS carries out process to mutual message in scanning and/or handoff procedure and comprises: serving BS carries indication information in the message sent to terminal, wherein, the message sent to terminal comprises Neighboring Cell List message, and indication information is used to indicate the adjacent base station being in cell bar status in the adjacent base station of serving BS.
Preferably, the community of terminal receiving neighbor bs forbids that indication information comprises: terminal scans adjacent base station, forbids indication information with the community receiving each adjacent base station.
Preferably, terminal to adjacent base station scan at least comprise one of following: terminal selects frequency, and starts blindly to sweep search; Serving BS selects the adjacent base station needing to carry out scanning according to this adjacent base station information preserved, and starts to scan; Serving BS sends the message of the information of the adjacent base station needing scanning to terminal by scanning response message, terminal scans needing the adjacent base station of scanning.
Preferably, after indication information is forbidden in the community of terminal receiving neighbor bs, terminal is carried out process to mutual message in scanning and/or handoff procedure and is comprised: the community of the adjacent base station being in cell bar status is forbidden that indication information sends to serving BS by scan report message by terminal.
Preferably, after indication information is forbidden in the community of terminal receiving neighbor bs, terminal is carried out process to mutual message in scanning and/or handoff procedure and is comprised: terminal sends predetermined message to serving BS, wherein, get rid of the information of the adjacent base station of cell bar status of being in predetermined message, predetermined message at least comprises one of following: indication message, scan report message, handover request message.
Preferably, the community of terminal receiving neighbor bs forbids that indication information comprises: terminal is when network is reentried, and indication information is forbidden in the community receiving the target BS that network is reentried, and wherein, target BS is one of adjacent base station.
Preferably, when according to the community of target BS, terminal forbids that the state of Indication message determination target BS is cell bar status, said method also comprises: terminal determines that from candidate target BS another base station is carried out trial network as target BS and reentried, wherein, candidate target base station is subset or the set of adjacent base station; If the candidate target base station that terminal is determined is in accessible state, then terminal completes network and to reentry to the candidate target base station determined.
Pass through the present invention, the reception in scanning and/or handoff procedure of serving BS and/or terminal is adopted to be in the adjacent base station information of cell bar status and to process the community prohibition information of adjacent base station in mutual message, solve and in advance the base station being in cell bar status is not processed when switching in correlation technique and the problem of the longer even call drop of terminal switch time delay that causes, and then achieve the access of reliable target BS, thus improve radio communication system base station switching efficiency, reduce communication and terminal overheads.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram switched according to the radio communication system base station of correlation technique;
Fig. 2 is the flow chart of the switching pre-processing method according to the embodiment of the present invention;
Fig. 3 is the flow chart processed adjacent base station information according to the automatic lastest imformation comprising community prohibition information according to the base station of the embodiment of the present invention;
Fig. 4 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending NBR-ADV message according to the base station of the embodiment of the present invention;
Fig. 5 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending SCN-RSP message according to the base station of the embodiment of the present invention;
Fig. 6 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-CMD message according to the base station of the embodiment of the present invention;
Fig. 7 to scan adjacent base station according to the terminal of the embodiment of the present invention and processes the flow chart of adjacent base station information;
Fig. 8 is the flow chart processed adjacent base station information according to the SCN-REP message comprising community prohibition information received according to the base station of the embodiment of the present invention;
Fig. 9 is the flow chart processed adjacent base station information according to the HO-RSP message comprising community prohibition information received according to the base station of the embodiment of the present invention;
Figure 10 carries out directly scanning according to the base station of the embodiment of the present invention to adjacent base station get cell bar status relevant information and process the flow chart of adjacent base station information;
Figure 11 is the flow chart processed adjacent base station information according to the NBR-ADV message comprising community prohibition information received according to the terminal of the embodiment of the present invention;
Figure 12 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending SCN-REQ message according to the terminal of the embodiment of the present invention;
Figure 13 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending SCN-REP message according to the terminal of the embodiment of the present invention;
Figure 14 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-REQ message according to the terminal of the embodiment of the present invention;
Figure 15 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-IND message according to the terminal of the embodiment of the present invention;
Figure 16 be according to the terminal of the embodiment of the present invention when network is reentried according to the flow chart obtaining the community prohibition information process adjacent base station information received;
According to the terminal of the embodiment of the present invention and target BS and serving BS, Figure 17 determines that suitable target BS carries out the flow chart of network reentry alternately.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
In the examples below, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
It should be noted that, base station alleged in following examples can comprise macro base station, little base station, micro-base station, sub-base stations, serving BS refers to the base station of the current access of terminal, community forbids that the prohibition information position, community in the auxiliary superframe header referring to that base station sends is 1 in the examples below, but is not limited thereto.
According to embodiments of the invention, provide a kind of switching pre-processing method, the method comprises: the community of serving BS and/or terminal receiving neighbor bs is forbidden indication information and processed, Fig. 2 is the flow chart of the switching pre-processing method according to the embodiment of the present invention, as shown in Figure 2, the method comprises the steps:
Step S201, indication information is forbidden in the community that serving BS and/or terminal receive the adjacent base station of this serving BS, and wherein, community forbids that indication information is used to indicate adjacent base station and whether is in cell bar status.
Step S202, serving BS and/or terminal process mutual message in scanning and/or handoff procedure.
Preferably, in step S202, the process carried out mutual message can be the information getting rid of the adjacent base station being in cell bar status within the message, also can be carry within the message to be used to indicate the indication information (that is, initiatively instruction is in the adjacent base station of cell bar status) whether adjacent base station is in cell bar status.
Preferably, serving BS can by the cell bar status information of following one of at least receiving neighbor bs: serving BS is upgraded by automatic adjacent section and obtains the information whether adjacent base station is in cell bar status; Handoff response (HO-RSP) message that serving BS is sent by receiving target base station obtains the information whether adjacent base station is in cell bar status; Scan report (SCN-REP) message that serving BS is sent by receiving terminal obtains the information whether adjacent base station is in cell bar status; Serving BS scans adjacent base station oneself, obtains the information whether adjacent base station is in cell bar status.
Preferably, terminal can forbid indication information by the community of one of following receiving neighbor bs: the message that terminal sends by receiving serving BS, such as, Neighboring Cell List (NBR-ADV) message, obtains the information whether adjacent base station is in cell bar status; Terminal scans adjacent base station oneself, obtains the information whether adjacent base station is in cell bar status; Whether the terminal adjacent base station received when network is reentried as target BS is in the information of cell bar status.
Preferably, in step S204, serving BS can but be not limited to NBR-ADV message, scanning response (SCN-RSP), get rid of the adjacent base station (that is, getting rid of the information being in the adjacent base station of cell bar status) being in cell bar status in switching command (HO-CMD).
Preferably, in step S204, terminal can but be not limited to scan request (SCN-REQ) message, scan report (SCN-REP) message, handover request (HO-REQ), switch in instruction (HO-IND) message the adjacent base station (that is, getting rid of the information of the adjacent base station of cell bar status of being in) got rid of and be in cell bar status.
Preferably, in step S204, serving BS can but be not limited to the instruction when sending NBR-ADV message to terminal and be in the adjacent base station of cell bar status; Terminal can but be not limited to the instruction when sending SCN-REP message to serving BS and be in the adjacent base station of cell bar status.
Be described in detail below in conjunction with the implementation procedure of example to the embodiment of the present invention.
Example 1
In this example, the neighborhood between peripheral base station is safeguarded by automatic update mechanism in base station, that is, when have new base station to add or some base station break down cannot work time, complete adjacent-area list renewing by self-organizing network server (SON Server) between base station.When adjacent base station is due to when load is higher or backhaul connects disconnection and temporarily forbids that terminal accesses, hoc service device is issued in the automatic neighbor list renewal interaction message of base station should comprise community prohibition information.
Fig. 3 is the flow chart processed adjacent base station information according to the automatic lastest imformation comprising community prohibition information according to the base station of the embodiment of the present invention, as shown in Figure 3, after base station receives the community prohibition information of adjacent base station, the local adjacent base station information preserved of corresponding process, this flow process comprises the following steps:
Step S301: base station receives the automatic renewal neighbor list information comprising community prohibition information;
Step S302: base station process adjacent base station information, such as, upgrades the community prohibition information of the local adjacent base station preserved.
When serving BS needs to send NBR-ADV message, the adjacent base station information being in cell bar status can not be comprised in NBR-ADV message, Fig. 4 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending NBR-ADV message according to the base station of the embodiment of the present invention, as shown in Figure 4, this flow process comprises the following steps:
Step S401: base station checks the local adjacent base station information preserved;
Step S402: get rid of the adjacent base station information being in cell bar status when base station sends NBR-ADV message.
Receiving in terminal eliminates after community forbids the NBR-ADV message of adjacent base station, directly can avoid scanning the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 2
After serving BS sends NBR-ADV message, find to have occurred that new adjacent base station enters cell bar status by automatic update mechanism, serving BS upgrades the local adjacent base station information preserved accordingly.And terminal, according to adjacent bast station list contained in the NBR-ADV message received before, sends SCN-REQ message to containing the emerging adjacent base station entering cell bar status during serving BS during this period.After server basestation receives the SCN-REQ message of terminal transmission, according to current up-to-date adjacent base station information, do not comprise when sending SCN-RSP message the base station entering cell bar status.
Fig. 5 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending SCN-RSP message according to the base station of the embodiment of the present invention, and as shown in Figure 5, this flow process comprises the following steps:
Step S501: base station checks the local adjacent base station information preserved;
Step S502: get rid of the adjacent base station information being in cell bar status when base station sends SCN-RSP message.
Terminal receives and eliminates after community forbids the SCN-RSP message of adjacent base station, directly can avoid scanning the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 3
Serving BS finds that the signal of terminal is more and more weak, needs to be switched on other adjacent base stations.Serving BS sends HO-REQ message request to adjacent base station and switches, and it should be noted that the up-to-date adjacent base station information that serving BS is preserved in this locality according to automatic update mechanism, HO-REQ message only sends to the current adjacent base station not being in cell bar status.After serving BS selects the target BS of some candidates, initiatively initiate to switch.When serving BS sends HO-CMD message to terminal, same, serving BS should be noted to be got rid of the adjacent base station being in cell bar status from HO-CMD message.
Fig. 6 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-CMD message according to the base station of the embodiment of the present invention, and as shown in Figure 6, this flow process comprises the following steps:
Step S601: base station checks the local adjacent base station information preserved;
Step S602: get rid of the adjacent base station information being in cell bar status when base station sends HO-CMD message.
Terminal receives and eliminates after community forbids the HO-CMD message of adjacent base station, can avoid attempting network and to reentry the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 4
Terminal finds more and more weak from serving BS signal, needs to be switched on other adjacent base stations just can work on.Terminal sends HO-REQ message to serving BS and initiatively initiates to switch.After serving BS receives the HO-REQ message of terminal transmission, serving BS sends HO-REQ message request to adjacent base station and switches, it should be noted that the up-to-date adjacent base station information that serving BS is preserved in this locality according to automatic update mechanism, HO-REQ message only sends to the current adjacent base station not being in cell bar status.After serving BS selects the target BS of some candidates, serving BS sends HO-CMD message to terminal, and same, serving BS should be noted to be got rid of the adjacent base station being in cell bar status from HO-CMD message.
Fig. 6 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-CMD message according to the base station of the embodiment of the present invention, and as shown in Figure 6, this flow process comprises the following steps:
Step S601: base station checks the local adjacent base station information preserved;
Step S602: get rid of the adjacent base station information being in cell bar status when base station sends HO-CMD message.
Terminal receives and eliminates after community forbids the HO-CMD message of adjacent base station, can avoid attempting network and to reentry the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 5
When automatic update mechanism is not supported in base station, base station is issued in the NBR-ADV message of terminal and SCN-RSP message and is not got rid of the adjacent base station information being in cell bar status at present.Terminal scans one by one to the adjacent base station comprised in SCN-RSP message after receiving the SCN-RSP message that serving BS sends, and judges whether to meet the trigger condition scanning and report.In addition, terminal also may select frequency carry out blind sweep search adjacent base station or when being in idle mode (Idle Mode) according to the spontaneous selection adjacent base station of the adjacent base station information received before and to selection adjacent base station scan.If scanning certain adjacent base station is be in cell bar status at present, terminal processes also upgrades the local adjacent base station information preserved.
Fig. 7 to scan adjacent base station according to the terminal of the embodiment of the present invention and processes the flow chart of adjacent base station information, and as shown in Figure 7, this flow process comprises the following steps:
Step S701: terminal scans adjacent base station, obtains the information whether adjacent base station is in cell bar status;
Step S702: terminal processes adjacent base station information.
Then, terminal comprises when sending SCN-REP message the adjacent base station information being in cell bar status, and indicates it to be in cell bar status.When base station receive that terminal sends comprise the SCN-REP message of community prohibition information after, base station processes the local adjacent base station information preserved accordingly.
Fig. 8 is the flow chart processed adjacent base station information according to the SCN-REP message comprising community prohibition information received according to the base station of the embodiment of the present invention, and as shown in Figure 8, this flow process comprises the following steps:
Step S801: base station receives the SCN-REP message comprising community prohibition information that terminal is sent;
Step S802: base station process adjacent base station information.
Scanning according to terminal reports, if find that there is the base station being originally in cell bar status to be in now community and to can be accessed by state, or being originally in the fierce fighting that community can be accessed by state is in cell bar status now, base station will upgrade the adjacent base station information of oneself accordingly, and needs transmission when base station after this and switch relevant message as got rid of the adjacent base station information being in cell bar status during HO-CMD.Terminal receives and eliminates after community forbids the HO-CMD message of adjacent base station, can avoid attempting network and to reentry the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 6
When base station is not supported automatic update mechanism and terminal not to report in SCN-REP message to be in cell bar status base station, issue in the NBR-ADV message of terminal and SCN-RSP message in base station and all comprise all relevant adjacent base station informations, do not get rid of the adjacent base station information being in cell bar status at present.Same, terminal sends to the adjacent base station information also do not got rid of in SCN-REQ and the SCN-REP message of base station and be in cell bar status.When terminal initiatively sends when the initiation of HO-REQ message switches or when initiatively being initiated to switch by base station, the adjacent base station information that base station is preserved according to oneself, to each possible target BS transmission HO-REQ message, by the mutual handover information of backbone network.For the base station being in cell bar status at present, after receiving the HO-REQ message sent other base stations, directly show to lay oneself open to cell bar status when HO-RSP message is replied in base station.
When serving BS receive that the target BS of candidate sends comprise the HO-RSP message of community prohibition information time, serving BS processes accordingly and upgrades oneself adjacent base station information, Fig. 9 is the flow chart upgraded adjacent base station information according to the HO-RSP message comprising community prohibition information received according to the base station of the embodiment of the present invention, as shown in Figure 9, this flow process comprises the following steps:
Step S901: base station receives the HO-RSP message comprising community prohibition information that target BS is sent;
Step S902: base station process adjacent base station information.
Base station, when sending HO-CMD message to terminal thereafter, does not comprise the base station being in cell bar status.Terminal receives and eliminates after community forbids the HO-CMD message of adjacent base station, can avoid attempting network and to reentry the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 7
Base station can be scanned adjacent base station in certain special cases, such as, sub-base stations and can be in low load model (Low Duty Mode) time and scans adjacent base station in initialization, thus obtains the information which adjacent base station is in cell bar status.Sub-base stations processes accordingly according to scanning result and upgrades oneself local adjacent base station information preserved.Figure 10 carries out directly scanning according to the base station of the embodiment of the present invention to adjacent base station get cell bar status relevant information and process the flow chart of adjacent base station information, and as shown in Figure 10, this flow process comprises the following steps:
Step S1001: base station is scanned adjacent base station;
Step S1002: base station obtains the indication information whether adjacent base station is in cell bar status;
Step S1003: base station process adjacent base station information.
When serving BS needs to send NBR-ADV message, in message, do not comprise the adjacent base station information being in cell bar status.When server basestation needs initiatively to send SCN-RSP message to terminal, in message, do not comprise the adjacent base station information (carried out detailed description in the above-described example, and do not repeat them here) being in cell bar status.Terminal receives and eliminates after community forbids NBR-ADV and the SCN-RSP message of adjacent base station, directly can avoid scanning the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Preferably, sub-base stations can mutual simultaneously by handover information between target BS, thus obtain which target BS and be in cell bar status, and sub-base stations, when sending HO-CMD message to terminal thereafter, does not comprise the base station being in cell bar status.Terminal receives and eliminates after community forbids the HO-CMD message of adjacent base station, can avoid attempting network and to reentry the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching further.
Example 8
Base station safeguards adjacent base station information by automatic update mechanism or terminal by SCN-REP information reporting.When serving BS needs to send NBR-ADV message, explicitly in message point out which adjacent base station is in cell bar status.After terminal receives the NBR-ADV message sent base station, upgrade the local adjacent base station information preserved.
Figure 11 is the flow chart processed adjacent base station information according to the NBR-ADV message comprising community prohibition information received according to the terminal of the embodiment of the present invention, and as shown in figure 11, this flow process comprises the following steps:
Step S1101: terminal receives the NBR-ADV message comprising community prohibition information that serving BS is sent;
Step S1102: terminal processes adjacent base station information.
When terminal sends SCN-REQ message to base station, in message, do not comprise the adjacent base station information being in cell bar status.Figure 12 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending SCN-REQ message according to the terminal of the embodiment of the present invention, and as shown in figure 12, this flow process comprises the following steps:
Step S1201: terminal checks adjacent base station information;
Step S1202: get rid of the adjacent base station information being in cell bar status when terminal sends SCN-REQ message.
Accordingly, the adjacent base station information being in cell bar status is not comprised yet in the SCN-RSP message that base station returns.Terminal receives and eliminates after community forbids the SCN-RSP message of adjacent base station, directly can avoid scanning the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 9
Terminal scans one by one to the adjacent base station comprised in SCN-RSP message after receiving the SCN-RSP message that serving BS sends, and judges whether to meet the trigger condition scanning and report.If scanning certain adjacent base station is be in cell bar status at present, terminal processes also upgrades the local adjacent base station information preserved.The adjacent base station information being in cell bar status is not comprised when terminal sends SCN-REP message.
Figure 13 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending SCN-REP message according to the terminal of the embodiment of the present invention, and as shown in figure 13, this flow process comprises the following steps:
Step S1301: terminal checks adjacent base station information;
Step S1302: get rid of the adjacent base station information being in cell bar status when terminal sends SCN-REP message.
When terminal sends HO-REQ message active triggering switching, in HO-REQ message, do not comprise the adjacent base station being in cell bar status.Figure 14 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-REQ message according to the terminal of the embodiment of the present invention, and as shown in figure 14, this flow process comprises the following steps:
Step S1401: terminal checks adjacent base station information;
Step S1402: get rid of the adjacent base station information being in cell bar status when terminal sends HO-REQ message.
After serving BS receives HO-REQ message, when mutual with target BS and in the HO-CMD message issuing terminal, do not comprise the current base station being in cell bar status accordingly.Terminal receives and eliminates after community forbids the HO-CMD message of adjacent base station, can avoid attempting network and to reentry the current adjacent base station being in cell bar status, save time delay and the terminal overheads of switching.
Example 10
When terminal receives the HO-CMD message of serving BS transmission, terminal judges whether the target BS comprised in message can be accessed by one by one.Judge whether the indexs such as the condition that can be accessed by comprises signal to noise ratio (CINR), received signal strength indicator (RSSI).If find that certain target BS meets switching condition, and the information of adjacent base station that terminal is preserved according to oneself, this target BS is current is not in cell bar status, then terminal sends HO-IND message and informs its target BS chosen to serving BS, Figure 15 gets rid of the flow chart being in cell bar status adjacent base station information when being and sending HO-IND message according to the terminal of the embodiment of the present invention, as shown in figure 15, this flow process comprises the following steps:
Step S1501: terminal checks adjacent base station information;
Step S1502: get rid of the adjacent base station information being in cell bar status when terminal sends HO-IND message.
Figure 16 be according to the terminal of the embodiment of the present invention when network is reentried according to the flow chart of the community prohibition information process adjacent base station information got, as shown in figure 16, this flow process comprises the following steps:
Step S1601: terminal obtains the information whether target BS is in cell bar status when network is reentried;
Step S1602: terminal processes adjacent base station information.
If terminal finds that when network is reentried the prohibition information position, community of the auxiliary superframe header of target BS is 0, then complete network re-entry procedure further, terminal finds that target BS is in cell bar status else if, terminal upgrades adjacent base station information, and continues to judge whether other target BS can be accessed by.If terminal finds that all target BS not can be accessed by, then terminal transmission HO-IND message indicates all target BS all cannot access to serving BS.
According to the terminal of the embodiment of the present invention and target BS and serving BS, Figure 17 determines that suitable target BS carries out the flow chart of network reentry alternately, as shown in figure 17, this flow process comprises the following steps:
Step S1701, terminal obtains the HO-CMD information that serving BS sends;
Step S1702, terminal selects the suitable target BS indicated in HO-CMD message according to switching condition;
Step S1703, terminal sends HO-IND message and informs the target BS that its plan is reentried to serving BS;
Step S1704, terminal starts network and to reentry target BS, is obtained the community prohibition information of this target BS by scanning
Step S1705, if access is forbidden in current goal base station, then enters step S 1707, otherwise enters step S1706;
Step S1706, terminal network is reentried target BS;
Step S1707, whether terminal judges also has other target BS, if yes then enter step S1702, otherwise enters step S1708;
Step S1708, terminal sends HO-IND message to serving BS, informs its all target BS of cannot reentrying.
In this example, terminal judges further when network is reentried whether target BS is in cell bar status, ensure that the correct and effective of switching.
In sum, by above-described embodiment, serving BS and/or terminal obtain forbidding relevant indication information with community and carrying out corresponding process of adjacent base station.Thus in handoff procedure, the target BS forbidding accessing in community can be got rid of in advance, realize the access of reliable target BS, thus improve radio communication system base station switching efficiency, reduce communication and terminal overheads.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a switching pre-processing method, is characterized in that, comprising:
Indication information is forbidden in the community that serving BS and/or terminal receive the adjacent base station of described serving BS, and wherein, described community forbids that indication information is used to indicate described adjacent base station and whether is in cell bar status;
According to described community, described serving BS and/or described terminal forbid that indication information processes mutual message in scanning and/or handoff procedure;
Wherein, described community is forbidden that indication information refers to, within a period of time, the community prohibition information of auxiliary superframe header first attached bag is set to 1, be set to be in cell bar status by described adjacent base station, enter to prevent described terminal or reentry described serving BS during this period;
Before indication information is forbidden in the community that described serving BS receives described adjacent base station, described method also comprises: indication information is forbidden in predetermined network element sends community from the adjacent base station of described serving BS to described serving BS, wherein, described predetermined network element at least comprises one of following: self-organizing network server, described terminal, described adjacent base station;
Before indication information is forbidden in the community that described terminal receives the adjacent base station of described serving BS, described method also comprises: indication information is forbidden in the community that described serving BS and/or described adjacent base station send the adjacent base station of described serving BS.
2. method according to claim 1, is characterized in that, according to described community, described serving BS and/or described terminal forbid that indication information carries out process to mutual message in scanning and/or handoff procedure and comprises:
The information being in the adjacent base station of cell bar status is got rid of in described mutual message.
3. method according to claim 1, is characterized in that, according to described community, described serving BS and/or described terminal forbid that indication information carries out process to mutual message in scanning and/or handoff procedure and comprises:
Carry in described mutual message and be used to indicate the indication information that adjacent base station is in cell bar status.
4. method according to claim 1, is characterized in that, the community that described serving BS receives described adjacent base station forbids that indication information comprises:
Described serving BS receives the message carrying described adjacent base station information that described self-organizing network server sends;
Described serving BS forbids indication information from the described community obtaining described adjacent base station the message of described adjacent base station information that carries.
5. method according to claim 1, is characterized in that, the community that described serving BS receives described adjacent base station forbids that indication information comprises:
Described serving BS scans described adjacent base station, forbids indication information with the community receiving described adjacent base station.
6. method according to claim 1, is characterized in that, the community that described serving BS receives described adjacent base station forbids that indication information comprises:
Described terminal or described serving BS initiate to switch;
Described serving BS sends message to the candidate target base station switched, and receives the response message from described candidate target base station;
Indication information is forbidden in the community that described serving BS obtains described candidate target base station from described response message.
7. the method according to claim 1,2,4,5 or 6, is characterized in that, described serving BS carries out process to mutual message in scanning and/or handoff procedure and comprises:
Described serving BS the following message sent to described terminal one of at least in get rid of the information being in the adjacent base station of cell bar status: Neighboring Cell List message, scanning response message, switching command message.
8. the method according to claim 1,3,4,5 or 6, is characterized in that, described serving BS carries out process to mutual message in scanning and/or handoff procedure and comprises:
Described serving BS carries described indication information in the message sent to described terminal, wherein, the message sent to described terminal comprises Neighboring Cell List message, and described indication information is used to indicate the adjacent base station being in cell bar status in the adjacent base station of described serving BS.
9. method according to claim 1, is characterized in that, the community that described terminal receives described adjacent base station forbids that indication information comprises:
Described terminal scans described adjacent base station, forbids indication information with the community receiving each adjacent base station.
10. method according to claim 9, is characterized in that, described terminal to described adjacent base station scan at least comprise one of following:
Described terminal selects frequency, and starts blindly to sweep search;
Described serving BS selects the adjacent base station needing to carry out scanning according to this adjacent base station information preserved, and starts to scan;
Described serving BS sends the message of the information of the adjacent base station needing scanning to described terminal by scanning response message, described terminal scans the described adjacent base station of scanning that needs.
11. methods according to claim 9 or 10, is characterized in that, after indication information is forbidden in the community that described terminal receives described adjacent base station, described terminal is carried out process to mutual message in scanning and/or handoff procedure and comprised:
The community of the adjacent base station being in cell bar status is forbidden that indication information sends to described serving BS by scan report message by described terminal.
12. methods according to claim 9 or 10, is characterized in that, after indication information is forbidden in the community that described terminal receives described adjacent base station, described terminal is carried out process to mutual message in scanning and/or handoff procedure and comprised:
Described terminal sends predetermined message to described serving BS, wherein, get rid of the information of the adjacent base station of cell bar status of being in described predetermined message, described predetermined message at least comprises one of following: indication message, scan report message, handover request message.
13. methods according to claim 1, is characterized in that, the community that described terminal receives described adjacent base station forbids that indication information comprises:
Described terminal is when network is reentried, and indication information is forbidden in the community receiving the target BS that network is reentried, and wherein, described target BS is one of described adjacent base station.
14. methods according to claim 13, is characterized in that, when according to the community of described target BS, described terminal forbids that Indication message determines that the state of described target BS is cell bar status, described method also comprises:
Described terminal determines that from candidate target BS another base station is carried out trial network as target BS and reentried, and wherein, described candidate target base station is subset or the set of described adjacent base station;
If the candidate target base station that terminal is determined is in accessible state, then terminal completes network and to reentry the described candidate target base station determined.
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| CN200910211966.9A CN102088745B (en) | 2009-12-08 | 2009-12-08 | Switching pre-processing method |
| PCT/CN2010/078790 WO2011069405A1 (en) | 2009-12-08 | 2010-11-16 | Handover preprocessing method |
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| CN102869051A (en) * | 2011-07-07 | 2013-01-09 | 中兴通讯股份有限公司 | Method and device for switching and reporting measurement information in adjacent cells |
| US8798633B2 (en) * | 2012-08-22 | 2014-08-05 | Intel Corporation | Positioning-assisted cell selection and handover for LTE |
| EP3649806B1 (en) | 2017-07-07 | 2022-11-02 | Sony Group Corporation | Selection of target cell from candidate cells based on access restrictions including at least one respective regulated repetition level for each candidate cell |
| CN110798845B (en) * | 2018-08-01 | 2023-05-02 | 中国电信股份有限公司 | Network equipment state information opening method and system, source base station and external server |
| CN114423056A (en) * | 2020-10-28 | 2022-04-29 | 大唐移动通信设备有限公司 | Cell switching method, source base station and target base station |
| CN117544989A (en) * | 2024-01-09 | 2024-02-09 | 荣耀终端有限公司 | Redirection method, access network equipment and terminal equipment |
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| CN101370269A (en) * | 2007-08-13 | 2009-02-18 | 华为技术有限公司 | Cell selection method, user terminal and access network control node |
| CN101426255A (en) * | 2007-10-30 | 2009-05-06 | 华为技术有限公司 | Cell access control method, system and apparatus |
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| CN101547495A (en) * | 2008-03-27 | 2009-09-30 | 华为技术有限公司 | Method for reselecting cell, terminal and system |
| CN101583137A (en) * | 2008-05-12 | 2009-11-18 | 华为技术有限公司 | Method and device for transmitting and receiving adjacent cell information |
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| CN101370269A (en) * | 2007-08-13 | 2009-02-18 | 华为技术有限公司 | Cell selection method, user terminal and access network control node |
| CN101426255A (en) * | 2007-10-30 | 2009-05-06 | 华为技术有限公司 | Cell access control method, system and apparatus |
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