CN1744761A

CN1744761A - Method for sharing wireless accessing net by multi operators

Info

Publication number: CN1744761A
Application number: CN 200410079047
Authority: CN
Inventors: 王广伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-09-04
Filing date: 2004-09-04
Publication date: 2006-03-08
Anticipated expiration: 2024-09-04
Also published as: CN100420331C

Abstract

The method includes steps: (1) when user initiates message of attachment request to wireless network controller at first time, using international mobile user ID as request ID of the user, the wireless network controller routes the request to a serving GPRS support node (SGSN node); (2) receiving attachment request, the SGSN node allocates a packet temporary mobile subscriber ID (P-TMSI) for user; network resource ID in P-TMSI is divided into two segments: one is ID of operation manager the user belongs to in order to distinguish different operation managers, and the other is ID of SGSN node of next continuous processing; (3) when initiating attachment request at next time, user sends P-TMSI to wireless network controller; based on ID of operation manager in network resource ID, wireless network controller routes user's message to SGSN node of operation manager the user belongs to for further process.

Description

The method of wireless access network is shared by a kind of a plurality of operator

Technical field

The present invention relates to the WCDMA moving communicating field, relate in particular to and a kind ofly realize that by NRI (NetworkResource Identifier network resource identifier) segmentation a plurality of operators share the method for RAN (RadioAccess Network, wireless access network).

Background technology

Along with the 3G mobile communication technology is day by day ripe, the construction of 3G net has put on the agenda.In the 3G technology standard, WCDMA is that gsm system can be smoothly transitted into the WCDMA system from the GSM development, because gsm system has accounted for the overwhelming majority in the world, so the WCDMA system has the very strong market advantage.

In the process of construction of WCDMA network, the situation that a plurality of operators use same RAN can appear, mainly based on following reason:

1, because establishing wireless network is located at the proportion maximum in the WCDMA networking, therefore owing to bankroll problem, a plurality of operators consider to use together wireless access network;

2, some operator does not have 3G license, can't be assigned to frequency spectrum resource, can only share the wireless access network of other operators, to reach the purpose of sharing frequency spectrum;

3, WCDMA 3G business is also not extensive uses, and the user is also fewer, and wireless network construction expense is bigger, and a plurality of operators use same Radio Access Network helpful for the recovery of fund.

Therefore, the RAN of cross operator shares the favor that is subjected to operator.

In RAN shares, mainly be the shared realization by RNC among the RAN (Radio Network Controller radio network controller).

In the R5 of 3GPP agreement version, same RAN node has been proposed by the technical scheme of a plurality of SGSN (ServingGPRS Support Node, Serving GPRS Support Node) nodes sharing, this technical scheme is IU FLEX (the flexible access of IU interface).

As shown in Figure 1, its processing procedure of this scheme is:

The user initiates to adhere to request by RNC first, and RNC is according to its loading condition, for request mark this message is routed to a SGSN node with user's IMSI (International Mobile Subscriber Identity, IMSI International Mobile Subscriber Identity);

SGSN receive the user adhere to request after, for this user distributes P-TMSI (Packet-TemporaryMobile Subscriber Identify, grouping temporarily moved subscriber identification number), it is NRI that the 0-10 position is arranged among the P-TMSI, is the sign of this SGSN node;

After mobile phone was received the P-TMSI of SGSN distribution, the P-TMSI with distribution when next time, request was adhered in transmission identified to send to RNC, and RNC is the SGSN node that the user serves according to the NRI among the P-TMSI for the user selects last time, realizes user's the request of adhering to.

But IU FLEX scheme can only be used for the situation of the same or a plurality of RNC of a plurality of SGSN nodes sharing in the same operator.When the SGSN of a plurality of operators node is shared one or more RNC simultaneously,, in this case, can not guarantee the uniqueness of NRI because the allocation strategy of NRI is that each operator is self-ordained.For example, the SGSN node identification NRI of a plurality of operators of shared certain RNC is identical, when the user who belongs to certain operator when the RNC that shares initiates to adhere to request, shared RNC just can't be routed to user's message on the SGSN node of this user's operator according to NRI.

At present, a RAN node is not also proposed by the core net node solution scheme shared of a plurality of operators.

Summary of the invention

The present invention realizes that by the network resource identifier segmentation a plurality of operators share the method for wireless access network, may further comprise the steps:

A: when radio network controller was initiated Attach Request message, radio network controller was that request mark is routed to a Serving GPRS Support Node (SGSN node) with this message with user's IMSI International Mobile Subscriber Identity to the user first;

B: described SGSN node receives the user and adheres to request, and for this user distribute one the grouping temporarily moved subscriber identification number (P-TMSI), network resource identifier among this P-TMSI is divided into two sections, one section is the operator's sign under this user, in order to distinguish different operators, another section is the current SGSN node identification that continues;

C: when the user initiates to adhere to request next time, P-TMSI is sent to radio network controller, radio network controller is handled the SGSN node that user message is routed to operator according to the sign of the operator in the network resource identifier.

According to said method of the present invention, the shared figure place of section that is used to identify operator in the network resource identifier is not more than 10, and what of the operator of sharing wireless access network are concrete figure place can determine according to.

According to said method of the present invention, described operator identification section is the former positions in the network resource identifier.

According to said method of the present invention, described operator identification section is back several in the network resource identifier.

According to said method of the present invention, each SGSN node can be configured one or more network resource identifiers, the corresponding wireless network district that is made of the different operators of sharing a RNC of each network resource identifier.

Consult shown in Figure 2ly, the RNC of the X of operator is respectively by the SGSN nodes sharing of the A of operator, the B of operator, the C of operator.Use IU FLEX technology shared RNC between three SGSN nodes of the B of operator.After the RNC that the user of the A of operator shares by the X of operator is attached to network, use method of the present invention, RNC is routed to user's message on the SGSN node of the A of operator, is handled by the A of operator, rather than is handled by B of operator or the C of operator.Therefore, can conveniently realize sharing between a plurality of operators one or more RAN by method of the present invention.

Description of drawings

Fig. 1 is the flow chart of a plurality of SGSN nodes sharing RNC of same operator in the prior art;

Fig. 2 is that RNC of the present invention is by the SGSN nodes sharing schematic diagram of a plurality of operators;

Fig. 3 is the flow chart of the inventive method;

Fig. 4 shares schematic diagram for the multi-operator of the present invention under roaming condition.

Embodiment

Below in conjunction with accompanying drawing the solution of the present invention is further elaborated.

Consult flow chart of the present invention shown in Figure 3, the user at first initiates to adhere to request to affiliated RNC when the registration start, and RNC is that request mark is routed to a SGSN node with this message with user's IMSI.Corresponding relation between user's IMSI and the SGSN node can be realized by the following method: RNC divided by 1000, obtains a remainder with user's IMSI, has disposed the corresponding relation of SGSN and remainder among the RNC.For example the scope of SGSN1 is 0-500, and the scope of SGSN2 is 500-999, just can find corresponding SGSN node by this corresponding relation.

After corresponding SGSN node reception user adheres to request, for this user distributes a P-TMSI, the NRI among this P-TMSI is divided into two sections, and one section is the operator's sign under this user, in order to distinguish different operators, another section is the current SGSN node identification that continues; Promptly in 10 of NRI, NRI is divided into the SGSN node identification section of operator's identification section and operator inside.As reach several operators of sharing agreement and appoint, the front three of NRI is operator's sign, back seven is the SGSN node identification of operator inside; Perhaps conversely, the first seven of NRI is the SGSN node identification of operator inside, and back three is operator's sign.Front three as NRI is operator's sign, then can identify 8 shared operators; Back seven node identifications as operator inside of NRI can identify 128 SGSN nodes at most to each operator.Concrete operator sign need take several, how much determines by reaching the operator of sharing agreement.

Different operators constitutes a POOL district by sharing a RNC.

Consult shown in Figure 4ly, be the schematic diagram of user when roaming.

3 POOL are shared by operator 1 and operator, and the user who belongs to operator 1 can roam into POOL3 by POOL1 or POOL2.The SGSN that operator is respectively POOL1 and POOL2 has disposed different NRI, NRI sign as operator 1 can be 00100000001, the NRI of operator 2 is designated 0020000001, and wherein the NRI front three is operator's sign, and back seven is the inner SGSN node identification of operator.At this moment, back seven SGSN node identification can be identical.

When the user who belongs to operator 1 roams into POOL3 by POOL1 or POOL2, can carry the NRI that on POOL1 or POOL2, distributed last time on this user's the MS, RNC3 is by analyzing the front three of NRI, promptly 001, know that this user belongs to operator 1, thereby this user's message is routed on the SGSN5 node of this operator.

Each SGSN node also can be configured to a plurality of NRI by operator, the corresponding POOL district of each NRI, and therefore, each SGSN node is corresponding a plurality of POOL district simultaneously.At this moment, the RNC of Gong Xianging can be routed to user's information the corresponding SGSN node of operator according to the sign of the operator among the NRI.

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 claims.

Claims

1, the method for wireless access network is shared by a kind of a plurality of operator, may further comprise the steps:

2, the method for claim 1 is characterized in that: the shared figure place of section that is used to identify operator in the network resource identifier is not more than 10, and what of the operator of sharing wireless access network are concrete figure place can determine according to.

3, method as claimed in claim 2 is characterized in that: described operator identification section is the former positions in the network resource identifier.

4, method as claimed in claim 2 is characterized in that: described operator identification section is back several in the network resource identifier.

5, the method for claim 1 is characterized in that: each SGSN node can be configured one or more network resource identifiers, the corresponding wireless network district that is made of the different operators of sharing a RNC of each network resource identifier.