CN1635816A - A method of network selection in shared network - Google Patents
A method of network selection in shared network Download PDFInfo
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- CN1635816A CN1635816A CN 200310123497 CN200310123497A CN1635816A CN 1635816 A CN1635816 A CN 1635816A CN 200310123497 CN200310123497 CN 200310123497 CN 200310123497 A CN200310123497 A CN 200310123497A CN 1635816 A CN1635816 A CN 1635816A
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Abstract
This invention discloses a method for selecting network in share network, which contains A, user terminal receiving the broadcasting information containing location area LA and route area RA parameter LA/RA from network side, then comparing the shared network area SND mark in LA/RA parameter with the SND mark in current LA/RA parameter, if it is not accordance, then executing step B otherwise jumping out said process, B, user terminal selecting mobile network according to received SND mark. In said invention the SND mark is no longer an independent parameter, but a part belonging to LA/RA parameter, and in the shared network the SND mark is unique, which simplifies the system and user terminal process.
Description
Technical field
The present invention relates to the network technology of sharing field in the mobile communication system, be meant a kind of method of in shared network, carrying out network selecting especially.
Background technology
Because the expensive expense that 3G license and 3G network are built, most of mobile operator shares with cost saving at the network by variety of way at present.Mobile operator shared network infrastructure provides a solution that reduces cost in the 3G network starting stage.
Wireless network is divided into access network and core network two parts, and business network and mainly provides professional by core net and service server then on core network.Main the sharing of Radio Access Network (RAN) of considering shared for network by overwhelming majority operator, comprise equipment and all infrastructure, because whole wireless network construction cost mainly concentrates on access network, so core network and the shared ratio of business network cost are lower.
At present, network is shared and is mainly comprised following dual mode:
Mode one: two or more mobile operator share radio access network RAN, also to share with the MSC/SGSN that Radio Access Network directly links to each other, other core network device and service server are independent.
Mode two: two or more mobile operator share radio infrastructure, and independently core net and service network equipment are arranged separately, promptly do not share with the MSC/SGSN that Radio Access Network directly links to each other.
Compare with mode two, mode one belongs to traditional shared network, be fit to for the network before the R6, and mode two is thoroughly separated access network with core network, sees more suitable employing from technology and operation angle.
Because it is agreement between the operator that network is shared, situation about not sharing with network is consistent, and network is shared the reply user transparent, needs the user can distinguish the different core network operator of sharing RAN.Therefore, core network carrier all has separately independently mobile network's sign and operator's sign, and wherein mobile network's sign comprises mobile national number and mobile network No..
In shared network, user terminal need be selected core network carrier, and core network carrier all has separately independently mobile network's sign.How to carry out core network and select, following three kinds of schemes are arranged at present:
Scheme based on user terminal (UE): operator identifies and relevant information at all shared network lane place (LA) configuration mobile networks in user ID (USIM) module, as network operation mode.After UE receives the lane place LA/RA sign that shared channel issues, obtain the mobile network identification list according to this LA/RA sign from the inquiry of USIM module, then to network registration and indicate selected mobile network sign.
Scheme based on broadcast channel: all sub-districts in the shared network under certain lane place LA/RA, broadcast available mobile network sign and relevant information, as network operation mode.Change when user terminal UE recognizes the lane place from broadcast channel, just resolve mobile network sign and relevant information in the broadcast message that broadcast channel issues, be used for network selecting.
Scheme based on connection mode: UE learns that according to the LA/RA sign that shared channel issues the lane place changes, and initiates the location area updating process.Connect (RRC) when setting up at Radio Resource, UE provides mobile network sign and other relevant information to network requests, as network operation mode, radio network controller (RNC) connects at RRC to be set up in the process or afterwards, return institute's information requested to UE immediately, UE is used for network selecting according to the information of receiving.
At above-mentioned three kinds of schemes, third generation wireless communication standard tissue (3GPP) is being discussed the prioritization scheme based on Shared Network Area (SND, Shared Network Domain).SND is meant the core network operators geographic area identical as network operation mode with configuration in the shared network, and SND comprises one or more lane place.SND whether study by unique being still waiting in the shared network.
After introducing the SND prioritization scheme in the prior art, need to dispose at network side in advance the corresponding relation of SND and LA/RA.Referring to shown in Figure 1, after prior art was introduced SND, the detailed process of carrying out network selecting was as follows:
Step 101: network side sends the broadcast that contains SND and LA/RA parameter to user terminal.Here, broadcast need be expanded so that transmit SND information.
Step 102: after user terminal is received broadcast, LA/RA wherein and the LA/RA current of living in that self preserves are compared, if LA/RA is inconsistent, then execution in step 103, otherwise, jump out this flow process;
Step 103: this user terminal judges whether the SND in the broadcast is consistent with the SND current of living in that self preserves, if inconsistent, execution in step 104, otherwise, jump out this flow process;
Step 104: this user terminal and network side carry out location update operations, and utilize the LA/RA and the SND that receive to upgrade LA/RA current of living in and the SND that self preserves, and utilize this SND to carry out network selecting then.
From said process as can be seen, SND sign will be broadcasted in each sub-district in the shared network, when UE utilizes broadcast message to detect own residing SND to change, needs to check available mobile network sign and network of relation configuration information.As further optimization, but these information of UE buffer memory when enter identical SND next time, obtain relevant information from USIM module or terminal equipment.Compare with the network selecting method of not introducing SND, because Shared Network Area is very big, whole country may only be divided two, three SND, each SND comprises a plurality of LA/RA, and UE does not need to resolve and checks that mobile network identifies and relevant information when each LA/RA upgrades, only need when SND changes, to check mobile network sign and relevant information, so network performance is improved a lot.
But the shortcoming of above-mentioned SND prioritization scheme mainly is: operator needs the corresponding relation of SND and LA/RA in the static configuration shared network; In the system broadcast message of each sub-district, issue SND, need expand the existing system broadcast; If SND is not unique in shared network, can not use the cache information of UE; UE needs to preserve separately SND sign, waste resource.
Summary of the invention
In view of this, main purpose of the present invention provides a kind of method of carrying out network selecting in shared network, makes it not need broadcast is expanded, and reduces complexity.
A kind of method of carrying out network selecting in shared network provided by the invention comprises:
A. after user terminal is received the broadcast message that contains lane place LA/ route district RA parameter that network side issues, SND sign in the LA/RA parameter current of living in of Shared Network Area SND sign in this LA/RA parameter and self preservation is compared, if it is inconsistent, execution in step B then, otherwise, do not handle, jump out this flow process;
B. user terminal identifies pairing mobile network sign according to the SND that receives and carries out network selecting, and described SND sign is the unique identification in the described Shared Network Area.
This method may further include: preserve corresponding network configuration information of mobile network sign and this mobile network sign and the corresponding relation between the SND sign in user terminal in advance;
User terminal is to obtain the mobile network sign according to the SND that receives sign from described corresponding relation among the step B, then to network registration and indicate selected mobile network sign.
The broadcast message that contains the LA/RA parameter in the steps A is that network side issues by broadcast channel, and comprise the pairing mobile network sign of SND in the broadcast message at least, then user terminal carries out network selecting according to sign of the mobile network in the broadcast message and the corresponding network configuration information of this mobile network sign among the step B.
Step B can comprise:
B1, user terminal are initiated the Radio Resource connection request; Set up in the process in the Radio Resource connection, user terminal provides the mobile network sign and the corresponding network configuration information of this mobile network sign of this SND correspondence to the network side request;
The radio network controller of B2, network side returns mobile network sign and the corresponding network configuration information of this mobile network sign to this user terminal;
B3, this user terminal carry out network selecting according to the information of receiving.
Step B may further include: the Subscriber Identity Module of the LA/RA parameter update that this user terminal utilization is received self.
Described network configuration information is a network operation mode.
In the shared network that the present invention proposes in the network selecting prioritization scheme, the SND sign no longer is an independent parameter, and belong to the part of LA and RA, and the SND sign is unique in shared network, for the processing of system and user terminal very big simplification is arranged all.Because SND belongs to the part among the LA/RA, UE parses the SND sign from the LA/RA sign that broadcast issues, system broadcast message no longer needs SND is expanded, and user terminal does not need to preserve separately the SND sign yet simultaneously, has simplified the complexity of handling.
Description of drawings
Fig. 1 is for introducing the schematic flow sheet that SND carries out network selecting in the prior art;
Fig. 2 introduces the schematic flow sheet that SND carries out network selecting for the present invention.
Embodiment
The present invention SND sign is set to the part of LA/RA parameter, and sends the LA/RA parameter that contains the SND sign to user terminal by broadcast; The mobile network sign of user terminal basis SND correspondence is wherein selected network.
Need to prove that as a part that is LA/RA, and the length of SND parameter and the position in LA/RA thereof can be planned definite according to the network concrete condition by operator voluntarily with SND in the present invention.If the situation of sharing is fairly simple, SND identifies negligible amounts, and SND length can be smaller, as 2 bits; If share the situation more complicated, SND sign quantity is more, and SND length can be greatly, as 5 bits; The position of SND in LA/RA generally from highest order, but also can be determined by operator.
Referring to shown in Figure 2, realize that the detailed process of the inventive method is as follows:
Step 201: network side sends to user terminal and contains the broadcast message of LA/RA parameter, and comprises the SND sign in the LA/RA parameter;
Step 202: after user terminal is received this broadcast message, the SND in the LA/RA parameter current of living in of the sign of the SND in this LA/RA parameter and self preservation is compared, if inconsistent, then execution in step 203, if consistent, then do not handle, jump out this flow process.
Step 203: user terminal identifies pairing mobile network sign according to the SND that receives and carries out network selecting.
Describe technical scheme of the present invention in detail below in conjunction with the drawings and specific embodiments.
In three kinds of schemes that the method that the present invention is optimized by SND can be applied to mention in the prior art, below introduce respectively.
First kind: based on the scheme of user terminal UE.Operator identifies corresponding network configuration information at each Shared Network Area configuration mobile network sign and this mobile network in the USIM module in this scheme, as network operation mode.
After UE receives the broadcast message that contains the LA/RA parameter that Access Network issues, utilize this LA/RA to parse corresponding SND, and compare with the SND among the LA/RA current of living in that self preserves, judge whether SND changes, if SND changes, then the USIM from self obtains mobile network sign and relevant information, then to network registration and indicate selected network, if SND does not change, then do not need to inquire about the mobile network sign and carry out network selecting.
Second kind: based on the scheme of broadcast channel.This scheme is network side all Cell Broadcast CB mobile networks sign and corresponding relevant information such as network configuration information of this mobile network sign in shared network, as network operation mode etc.
UE receives the broadcast message that contains LA/RA parameter, mobile network sign and relevant information that broadcast channel issues, from this LA/RA parameter, parse SND, and the SND among the LA/RA current of living in that preserves with self relatively, judge whether SND changes, if SND changes, then resolve broadcast message, obtain wherein mobile network sign and relevant information, carry out network selecting according to the mobile network sign then; If SND does not change, then do not resolve the broadcast message that comprises mobile network sign and relevant information that broadcast channel issues.
The third: is based on the scheme of connection mode.This scheme is to obtain corresponding mobile network sign and the corresponding network configuration information of this mobile network sign according to the SND that receives from network side, as network operation mode etc.
UE judges according to this LA/RA parameter whether current position district changes after receiving the broadcast message that contains the LA/RA parameter that Access Network issues, if change, then initiates the location area updating process, if do not change, does not handle;
In the process of carrying out location area updating, from the LA/RA parameter, parse SND, compare with the SND in the LA/RA parameter current of living in of self preserving, judge whether SND changes, if SND changes, then connect (RRC) when setting up at Radio Resource, UE provides other relevant informations such as mobile network sign and network operation mode to network requests, radio network controller (RNC) connects at RRC to be set up in the process or afterwards, return institute's information requested to UE immediately, UE carries out network selecting according to the mobile network sign of receiving.Certainly, if SND does not change, then UE can not provide the mobile network sign to network requests.
SND among the present invention is unique in certain shared network, can not repeat.And in the shared network that the present invention proposes in the network selecting prioritization scheme, SND no longer is an independently sign, and belong to the part of LA/RA, and in actual process, do not need to dispose again corresponding relation, for the processing of system and user terminal very big simplification is arranged all.Because SND belongs to the part among the LA/RA, UE parses SND information from the LA/RA sign that broadcast issues, and system broadcast message no longer needs SND is expanded, and user terminal does not need to preserve separately SND information yet simultaneously.
Claims (6)
1, a kind of method of carrying out network selecting in shared network is characterized in that, this method may further comprise the steps:
A. after user terminal is received the broadcast message that contains lane place LA/ route district RA parameter that network side issues, SND sign in the LA/RA parameter current of living in of Shared Network Area SND sign in this LA/RA parameter and self preservation is compared, if it is inconsistent, execution in step B then, otherwise, do not handle, jump out this flow process;
B. user terminal identifies pairing mobile network sign according to the SND that receives and carries out network selecting, and described SND sign is the unique identification in the described Shared Network Area.
2, method according to claim 1 is characterized in that, this method further comprises: preserve corresponding network configuration information of mobile network sign and this mobile network sign and the corresponding relation between the SND sign in user terminal in advance;
User terminal is to obtain the mobile network sign according to the SND that receives sign from described corresponding relation among the step B, then to network registration and indicate selected mobile network sign.
3, method according to claim 1, it is characterized in that, the broadcast message that contains the LA/RA parameter in the steps A is that network side issues by broadcast channel, and comprise the pairing mobile network sign of SND in the broadcast message at least, then user terminal carries out network selecting according to sign of the mobile network in the broadcast message and the corresponding network configuration information of this mobile network sign among the step B.
4, method according to claim 1 is characterized in that, step B comprises:
B1, user terminal are initiated the Radio Resource connection request; Set up in the process in the Radio Resource connection, user terminal provides the mobile network sign and the corresponding network configuration information of this mobile network sign of this SND correspondence to the network side request;
The radio network controller of B2, network side returns mobile network sign and the corresponding network configuration information of this mobile network sign to this user terminal;
B3, this user terminal carry out network selecting according to the information of receiving.
5, method according to claim 1 is characterized in that, step B further comprises: the Subscriber Identity Module of the LA/RA parameter update that this user terminal utilization is received self.
According to claim 2,3 and 4 described methods, it is characterized in that 6, described network configuration information is a network operation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101234978A CN100441026C (en) | 2003-12-26 | 2003-12-26 | A method of network selection in shared network |
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| CNB2003101234978A CN100441026C (en) | 2003-12-26 | 2003-12-26 | A method of network selection in shared network |
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| CN1635816A true CN1635816A (en) | 2005-07-06 |
| CN100441026C CN100441026C (en) | 2008-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101874421A (en) * | 2007-09-28 | 2010-10-27 | 株式会社Ntt都科摩 | User device and paging channel reception method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6334052B1 (en) * | 1997-03-07 | 2001-12-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Subscription-based mobile station idle mode cell selection |
| AU2000245676A1 (en) * | 2000-05-22 | 2001-12-03 | Nokia Corporation | System and method for providing a connection in a communication network |
| DE60110737T2 (en) * | 2001-02-06 | 2006-02-02 | Lucent Technologies Inc. | Calling for a cellular telecommunication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101874421A (en) * | 2007-09-28 | 2010-10-27 | 株式会社Ntt都科摩 | User device and paging channel reception method |
| US8364151B2 (en) | 2007-09-28 | 2013-01-29 | Ntt Docomo, Inc. | User apparatus and paging channel reception method |
| CN101874421B (en) * | 2007-09-28 | 2013-03-20 | 株式会社Ntt都科摩 | User device and paging channel reception method |
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| CN100441026C (en) | 2008-12-03 |
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