CN1984485A - Method for selecting switch object residence - Google Patents

Method for selecting switch object residence Download PDF

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Publication number
CN1984485A
CN1984485A CNA2006100836470A CN200610083647A CN1984485A CN 1984485 A CN1984485 A CN 1984485A CN A2006100836470 A CNA2006100836470 A CN A2006100836470A CN 200610083647 A CN200610083647 A CN 200610083647A CN 1984485 A CN1984485 A CN 1984485A
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China
Prior art keywords
district
sub
terminal
cell
location area
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CNA2006100836470A
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Chinese (zh)
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CN1984485B (en
Inventor
朱江
傅雪冬
谭晖
杨长东
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Global Innovation Polymerization LLC
Gw Partnership Co ltd
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Huawei Technologies Co Ltd
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Publication of CN1984485B publication Critical patent/CN1984485B/en
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Abstract

The key ideal of method is: based on a rule which is all cells in active network are comprised in a same location area and all cells in standby network are comprised in another location area, the location area ID of each cell is set; when a cell switch is made for terminal, according to the location area ID of the cell and the measurement information, the network side selects the destination cell to be switched into.

Description

Select the method for switching target small area
Technical field
The present invention relates to the communications field, relate in particular to the selection of switching target small area.
Background technology
For the cluster wireless communication system of vital area or important application, the reliability requirement height need carry out two net backups, is illustrated in figure 1 as the two net position views under two net backup environment.Under the normal condition, communication system is carried out work in major network, and behind the part network element failure in the major network, whole communication system can be selected and utilize and be equipped with net and carry out work.Described major network and the signal strength signal intensity of netting fully are same at any point homogeneous phase.The situation of two net backups generally has two kinds of situations:
First kind, the equipment to network side and wireless access side backs up simultaneously; The equipment of network side in the major network and wireless access side be equipped with the network side in the net and the equipment of wireless access side and keep independent.
Second kind, only back up the wireless access side apparatus, and network equipment is shared.In this case, the wireless access side apparatus in the major network keeps independent as BTS (Base Transceiver Station, base transceiver station) and BSC (Base Station Controller, base station controller) with the wireless access side apparatus that is equipped with in the net.
In order the user to be guaranteed the favorable service quality, reduce cutting off rate, improve voice quality, to reduce network congestion, need indicate terminal on the dedicated channel to switch to the process of another sub-district from a sub-district by network.Before indicating, network needs judgement that network is switched, to select only switching target small area.
For the judgement that can switch, network must obtain for information about various from terminal, comprises the distance etc. of received signal intensity, speech quality and the base station of terminal.Terminal goes up with per 480 milliseconds speed at SACCH (channel associated signalling channel at a slow speed) and sends measurement report to network, the required various information of network have been comprised in the described measurement report, network can be well understood to the wireless link condition of each terminal by described measurement report, thereby carry out switch decision, select only switching target small area.
The prior art one relevant with the present invention is a kind ofly to select the method for switching target small area according to cell signal strength, and its main thought is: in the Target cell of terminal to report, select signal strength signal intensity the highest as switching target small area.Concrete determine that the power of signal strength signal intensity has a lot of situations, for example determine the signal strength signal intensity etc. of Target cell according to distance.
There is following defective in prior art one:
Because the signal strength signal intensity of active and standby network at any point homogeneous phase together, adopt signal strength signal intensity to select the method for sub-district in the prior art one if adopt, can accurately not select the major network of communication system operation or be equipped with net, so the method that provides of prior art one, can not be useful under the environment of two net backups.
The prior art two relevant with the present invention provides the method for selecting switching target small area according to the load of sub-district, and its main thought is: when the load of a sub-district is heavier, the load of this sub-district is suitably shared the light sub-district of contiguous load.
Utilize the method for prior art two, though it is more even to make that load distributes in whole network, to reduce congestion ratio, it still can not or select switching target small area in the net fully accurately at the major network of communication system operation.
Summary of the invention
The purpose of this invention is to provide a kind of method of selecting switching target small area,, solved prior art can not correctly not selected switching target small area under the environment of two nets backups drawback by the present invention.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method of selecting switching target small area, it comprises:
A, foundation are included into the same position sub-district with all sub-districts under the major network, are included into the principle in another location district with being equipped with all sub-districts off the net, and the Location Area Identification of each sub-district is set;
B, need carry out the sub-district when switching when terminal, network side is selected switching target small area according to the Location Area Identification of described sub-district and the metrical information of terminal.
Wherein, described steps A also comprises:
Set the switch decision principle of each terminal based on the Location Area Identification of described sub-district.
Wherein, described switch decision principle comprises:
The sub-district of preferential selection and current service cell same position district sign is as switching target small area;
Or,
The sub-district of preferential selection and current service cell diverse location district sign is as switching target small area;
Or,
Preferential selection has the sub-district of specific location area sign as switching target small area.
Wherein, described sub-district with specific location area sign comprises: possess the sub-district that identifies with major network same position district, or, possess and the sub-district that is equipped with net same position district sign.
Wherein, before described step B, comprise:
B1, network side sending system broadcast, and in message, carry the identification information that needs the neighbor cell that terminal measures;
After the neighbor cell that B2, terminal are measured needs according to described system broadcast message is measured, the metrical information that obtains is reported network side by measurement report;
B3, network side obtain the handover information of corresponding neighbor cell according to the metrical information of terminal.
Wherein, described step B specifically comprises:
B3, need carry out Target cell when switching when terminal, network side is selected the switch decision principle of corresponding described terminal;
B4, select the Target cell that switches according to the metrical information of described switch decision principle and described terminal.
As seen from the above technical solution provided by the invention, among the present invention,, be included into the principle in another location district, the Location Area Identification of each sub-district is set being equipped with all sub-districts off the net according to the same position sub-district is included in all sub-districts under the major network; When terminal need be carried out the sub-district switching, network side was selected switching target small area according to the Location Area Identification of described sub-district and the metrical information of terminal.By the present invention, network side can be selected the Target cell that switches according to the Location Area Identity of sub-district, thereby can correctly choose the Target cell of switching under the environment of two nets backups.
Description of drawings
Fig. 1 is the two net position views under two net backup environment in the prior art;
Fig. 2 is the structural representation of CGI sign in the prior art;
Fig. 3 is the flow chart of first embodiment provided by the invention.
Embodiment
CGI (Cell Global Identification, whole world cell identification) be all GSM (GlobeSystem of Mobile Communication, the Global Link mobile communcations system) unique identification of sub-district in, its structure as shown in Figure 2, by constituting with the lower part:
MCC (Mobile Country Code, Mobile Country Code MCC), it is made up of thirty system numeral, is 460 as China.
It is made up of MNC (Mobile Network Code, mobile network No.) thirty system numeral, is 000 as the MNC of China Mobile.
LAC (Location Area Code, Location Area Identity please provide Chinese) is made up of the hexadecimal number of 2 byte longs, wherein 0000 and FFFE can not use.
CI (Cell Identity, cell id) is made up of the hexadecimal number of 2 byte longs.
In actual applications, the MCC of particular operator and MNC are unique, and for example China Mobile is 460000, and LAC and CI are then decided in its sole discretion by operator.
Described MCC, MNC and LAC are collectively referred to as LAI (Location Area Identification).Same lane place is formed in sub-district with identical LAI.
Based on above-mentioned theory, first embodiment provided by the invention, its core is: the Location Area Identification by the sub-district is selected switching target small area.Specific implementation process comprises the steps: as shown in Figure 3
Step 1, according to the same position sub-district is included in all sub-districts under the major network, promptly the CGI of the sub-district on the major network has identical LAI; And the sub-district that will net fully is included into the another location district, and the CGI that promptly is equipped with online sub-district has the principle of identical LAI, and the LAI of each sub-district is set.
Step 2 is set the switch decision principle of each terminal based on the Location Area Identification of described sub-district.
In the step 2, described switch decision principle comprise following any one, but be not limited to following several:
1, preferentially selects to have sub-district with current service cell same position district sign as switching target small area;
2, preferentially select to have sub-district with current service cell diverse location district sign as switching target small area;
3, preferential selection has the sub-district of specific location area sign as switching target small area.Wherein, described sub-district with specific location area sign can be to possess the sub-district that identifies with major network same position district, also can be to possess and the sub-district that is equipped with net same position district sign.
Above-mentioned switch decision principle needs to set in advance at network side.
The 1st or the 2nd switch decision principle are relevant with each terminal present located state, for example, when the Location Area Identification of the sub-district under the Location Area Identification of the residing current service cell of described terminal and the major network is identical, if according to the 1st switch decision principle select target sub-district, preferentially the sub-district under the selection major network is as switching target small area; If according to the 2nd switch decision principle select target sub-district, need preferential the selection to be equipped with sub-district off the net as switching target small area.
The 3rd switch decision principle and each terminal present located state are irrelevant, for example, preferentially select to have the sub-district of network location region sign fully if specify as switching target small area, then no matter the current Serving cell in described terminal place is the sub-district in the major network or is equipped with sub-district in the net, and network side all can be in being equipped with sub-district off the net be selected the Target cell that switches for described terminal.
Step 3, network side be the sending system broadcast in real time or periodically, and carries the identification information that needs the neighbor cell that terminal measures in message.
Step 4 after the neighbor cell that terminal is measured needs according to described system broadcast message is measured, reports network side by measurement report with the metrical information that obtains.
Step 5, network side obtain the handover information of corresponding neighbor cell according to the metrical information of terminal.
Owing to when network side issues the handover information of the neighbor cell that needs the terminal measurement, generally provided the sequencing of described neighbor cell; After terminal is finished measurement, metrical information is reported network side, described network side obtains the handover information of corresponding described neighbor cell along pagination according to the priority of neighbor cell.Described handover information comprises: terminal is in distance of received signal intensity, speech quality and the base station of each neighbor cell of the current service cell at its place etc.
Step 6, when terminal need be carried out the Target cell switching, network side was selected the switch decision principle of corresponding described terminal, and selected the Target cell of switching according to the metrical information of described switch decision principle and described terminal.
In step 6, if the current service cell of described terminal is a major network, and the sub-district that the switch decision principle of corresponding described terminal identifies with current service cell same position district for preferential selection has is as switching target small area, and then network side is that the highest neighbor cell of described terminal select signal intensity is the target switching cell of described terminal in major network.
If the current service cell of described terminal is a major network, and the switch decision principle of corresponding described terminal selects to have sub-district with current service cell diverse location district sign as switching target small area for preferential, and then network side is the target switching cell of described terminal for the highest neighbor cell of described terminal select signal intensity in being equipped with net.
If the current service cell of described terminal is a major network, and the switch decision principle of corresponding described terminal for the preferential sub-district of selecting to have the specific location area sign as switching target small area, then network side is the target switching cell of described terminal for the highest neighbor cell of described terminal select signal intensity in the sub-district with specific location area sign.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (6)

1, a kind of method of selecting switching target small area is characterized in that, comprising:
A, foundation are included into the same position sub-district with all sub-districts under the major network, are included into the principle in another location district with being equipped with all sub-districts off the net, and the Location Area Identification of each sub-district is set;
B, need carry out the sub-district when switching when terminal, network side is selected switching target small area according to the Location Area Identification of described sub-district and the metrical information of terminal.
2, method according to claim 1 is characterized in that, described steps A also comprises:
Set the switch decision principle of each terminal based on the Location Area Identification of described sub-district.
3, method according to claim 2 is characterized in that, described switch decision principle comprises:
The sub-district of preferential selection and current service cell same position district sign is as switching target small area; Or,
The sub-district of preferential selection and current service cell diverse location district sign is as switching target small area; Or,
Preferential selection has the sub-district of specific location area sign as switching target small area.
4, method according to claim 3 is characterized in that, described sub-district with specific location area sign comprises:
The sub-district that possesses the Location Area Identification identical with major network, or, possess and the sub-district of netting identical Location Area Identification fully.
5, method according to claim 1 is characterized in that, comprises before described step B:
B1, network side sending system broadcast, and in message, carry the position region identification information that needs the neighbor cell that terminal measures;
After the neighbor cell that B2, terminal are measured needs according to described system broadcast message is measured, the metrical information that obtains is reported network side by measurement report;
B3, network side obtain the handover information of corresponding neighbor cell according to the metrical information of terminal.
6, according to any described method of claim 2 to 5, it is characterized in that described step B specifically comprises:
B3, need carry out Target cell when switching when terminal, network side is selected the switch decision principle of corresponding described terminal;
B4, select the Target cell that switches according to the metrical information of described switch decision principle and described terminal.
CN2006100836470A 2006-05-31 2006-05-31 Method for selecting switch object residence Expired - Fee Related CN1984485B (en)

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CN1984485B CN1984485B (en) 2010-12-15

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009089777A1 (en) * 2008-01-14 2009-07-23 Huawei Technologies Co., Ltd. Method, apparatus for updating location area during network switch
CN101094502B (en) * 2006-06-23 2010-06-16 大唐移动通信设备有限公司 Network architecture, and switching method based on the network architecture
CN102474747A (en) * 2009-08-18 2012-05-23 阿尔卡特朗讯公司 Ue measurements for hot spot detection
CN104602306A (en) * 2009-06-16 2015-05-06 黑莓有限公司 Method for accessing a service unavailable through a network cell
CN106879009A (en) * 2017-03-24 2017-06-20 电信科学技术研究院 A kind of residence reselecting, user equipment and network side equipment
US11096095B2 (en) 2009-06-16 2021-08-17 Blackberry Limited Method for accessing a service unavailable through a network cell
US11546807B2 (en) 2009-06-16 2023-01-03 Blackberry Limited Method for accessing a service unavailable through a network cell

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI109513B (en) * 1997-05-13 2002-08-15 Nokia Corp Cell load based handover on mobile communication systems
KR100259846B1 (en) * 1997-08-22 2000-06-15 윤종용 Semi-soft handoff
US6201969B1 (en) * 1998-06-02 2001-03-13 Lucent Technologies Inc. Control of handoff in CDMA cellular systems
EP1738605B1 (en) * 2004-04-13 2015-07-08 Telefonaktiebolaget LM Ericsson (publ) Method and arrangement for handling soft handover in a mobile telecommunication system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101094502B (en) * 2006-06-23 2010-06-16 大唐移动通信设备有限公司 Network architecture, and switching method based on the network architecture
WO2009089777A1 (en) * 2008-01-14 2009-07-23 Huawei Technologies Co., Ltd. Method, apparatus for updating location area during network switch
US11096095B2 (en) 2009-06-16 2021-08-17 Blackberry Limited Method for accessing a service unavailable through a network cell
CN104602306A (en) * 2009-06-16 2015-05-06 黑莓有限公司 Method for accessing a service unavailable through a network cell
CN104602306B (en) * 2009-06-16 2020-06-26 黑莓有限公司 Method for accessing services that cannot be used through a network cell
US11039344B2 (en) 2009-06-16 2021-06-15 Blackberry Limited Method for accessing a service unavailable through a network cell
US11546807B2 (en) 2009-06-16 2023-01-03 Blackberry Limited Method for accessing a service unavailable through a network cell
US11546809B2 (en) 2009-06-16 2023-01-03 Blackberry Limited Method for accessing a service unavailable through a network cell
US11832132B2 (en) 2009-06-16 2023-11-28 Blackberry Limited Method for accessing a service unavailable through a network cell
US12028755B2 (en) 2009-06-16 2024-07-02 Malikie Innovations Limited Method for accessing a service unavailable through a network cell
US12075291B2 (en) 2009-06-16 2024-08-27 Malikie Innovations Limited Method for accessing a service unavailable through a network cell
CN102474747B (en) * 2009-08-18 2016-03-16 诺基亚技术有限公司 For obtaining the method and apparatus of wireless measured data in mobile communication system
US9414272B2 (en) 2009-08-18 2016-08-09 Nokia Technologies Oy UE measurements for hot spot detection
CN102474747A (en) * 2009-08-18 2012-05-23 阿尔卡特朗讯公司 Ue measurements for hot spot detection
CN106879009A (en) * 2017-03-24 2017-06-20 电信科学技术研究院 A kind of residence reselecting, user equipment and network side equipment

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Granted publication date: 20101215