CN1852549A - Method for user terminal accessing in network - Google Patents
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- CN1852549A CN1852549A CNA2005100663299A CN200510066329A CN1852549A CN 1852549 A CN1852549 A CN 1852549A CN A2005100663299 A CNA2005100663299 A CN A2005100663299A CN 200510066329 A CN200510066329 A CN 200510066329A CN 1852549 A CN1852549 A CN 1852549A
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Abstract
The invention is applicable to system of an access network (RAN) connected to more than one nodes of core network. The method includes steps: user terminal (UT) sends access request including own user id to RAN; after receiving the request, RAN calculates a number by inputting the user id to a given algorithm; from the saved coincidence relation between the number and nodes of core network, RAN obtains the node of core network corresponding to the number, and sends the access request to the node; the node assigns temporary mobile station id TMSI/PTMSI including information of own network resource id (NRI) to the UT; through access network, sending successful response of access to the UT. In the invention, RAN node can assign message, which does not provide IDNNS or cannot provide correct IDNNS, from MS to different CN nodes. Being different from algorithm of selecting CN nodes based on IMSI, the invention does not need MS to take part in. Thus, the invention is simple and convenient.
Description
Technical field
The present invention relates to the mobile communication technology field, be meant a kind of method of accessing user terminal to network especially.
Background technology
Wideband Code Division Multiple Access (WCDMA) (WCDMA) system is made up of wireless access network (RAN) and core net (CN), wherein, RAN comprises one or several RNS (RNS Radio NetworkSubsystem), RNS comprises a radio network controller (RNC), one or several BSC again, and RAN node, be RNC and BSC, can be connected to a plurality of CN nodes.Networking from Fig. 1 as can be seen, RNC 101 links to each other by the Iu interface with CN 104 with CN 100, RNC 101 and Node B 102, Node B 103 link to each other by Iub interface, RNC can be connected to a plurality of CN nodes by the Iu interface.The situation that a this RAN links to each other with a plurality of CN can be called the Iu-Flex scheme.
In the Iu-Flex scheme, pool area (pool-area) is meant an area of wireless network coverage territory, is served concurrently by one or more CN nodes, and the work in this zone is shared jointly by these CN nodes, the MS that roams in this zone can not need to change service CN node.Also these CN nodes can be called SGSN pond or MSC pond.
Each CN node among the utilizable NRI unique identification pool-area.Which NRI value a CN node can use, and is configurable.
Referring to shown in Figure 2, prior art is under the Iu pattern, and promptly in the WCDMA system, the process of accessing user terminal to network is as follows:
Step 201:MS is before the RAN node sends the request of access, need be according to the IMSI of self and the certain algorithm value of deriving V, and RRC connection foundation request (RRC-Initial-direct-transfer) message that will contain value V sends to RAN, comprise the IDNNS cell in the AS part of this message, the IDNNS cell comprises one routing parameter that comprises the V value and the sign of fixing 10 bit lengths, it is from that this sign is used to refer to routing parameter for which sign (TMSI, IMSI, IMEI or the like) middle derivation.
Step 202: after RAN receives this RRC-Initial-direct-transfer message, according to sign wherein, from the pre-configured V/NRI value of body and the corresponding relation of CN node, determine the CN node of this MS correspondence, and send the RRC-Initial-direct-transfer of this MS to this CN node.
Step 203:CN node is this MS Resources allocation after receiving that request is set up in this connection, sets up signaling and connects, and insert response by this RAN to this MS transmission, wherein contains TMSI/PTMSI, comprises NRI among this TMSI/PTMSI.
Based on this, after MS is linked into network, if send message to the CN node by RAN, then need to analyze or derive to obtain NRI according to the TMSI/PTMSI that core net in the access procedure is distributed, and at every turn when core net sends message, comprise the IDNNS cell that carries NRI in the message, RAN transmits the message of MS according to the NRI in the IDNNS cell.
From said process, as can be seen, under the Iu pattern, use the MS of Iu interface for needs, the RAN node will be given different CN nodes from the forwards of MS if desired, then need MS to cooperate and handle, promptly MS need utilize IMSI or TMSI/PTMSI to calculate routing parameter according to certain algorithm, and sends to RAN by the message that comprises the IDNNS cell.Like this, could support the Iu-Flex characteristic at network equipment, promptly RAN connects the situation of a plurality of CN nodes, for the existing 3G mobile of not supporting IDNNS, network can't suitably be selected the CN node for MS, therefore, also just the message from MS can't be sent to different CN nodes, the Iu-Flex function lost efficacy in this case.In addition, for said method, if algorithm upgrades, for each MS, all will carry out once and upgrade, could continue to use, this makes the algorithm cost become very high undoubtedly, and poor operability.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method of accessing user terminal to network, it is connected at RAN under the situation of a plurality of CN nodes, do not need the cooperation of user terminal, can make user terminal insert different core net nodes.
In order to achieve the above object, the invention provides a kind of method of accessing user terminal to network, this method is applied in an Access Network RAN and the system that an above core net node links to each other, and this method comprises:
A. user terminal sends the request of access to Access Network, wherein contains self User Identity;
B. after Access Network is received this access request, select core net node according to this User Identity, and the request that should insert sends to described core net node;
C. described core net node distributes an interim moving station mark TMSI/PTMSI who contains self network resource identifier NRI information for this user terminal, and the access success response that will contain described TMSI/PTMSI sends to user terminal by Access Network.
Step b is described to be to obtain according to Subscriber Number section of preserving in advance and the corresponding relation between the core net according to this User Identity selection core net node, or, the certain algorithm computation of described User Identity input is gone out a numerical value, and from numerical value and the corresponding relation between the core net node that Access Network is preserved in advance, the core net node of this numerical value correspondence that obtains calculating, or by the polling acquisition, or according to the priority selection that sets in advance.
After step c, this method further comprises:
D1, Access Network obtain NRI according to TMSI/PTMSI after receiving the message that contains described TMSI/PTMSI of user terminal transmission, according to the NRI that self preserves and the corresponding relation of core net, determine the pairing core net node of this NRI;
D2, Access Network send to this message the core net node of determining in the steps d 1.
Directly comprise the NRI of one or more bits in TMSI/PTMSI described in the step c, the NRI in the steps d 1 directly obtains,
Comprise numerical value one or more bits, that can derive NRI in TMSI/PTMSI described in the step c, then the NRI in the steps d 1 derives NRI according to the certain algorithm of this numerical value utilization.
Message described in the steps d 1 is location update request message, or is call request message, or is handoff request message, or sends a request message for short message.
Certain algorithm is the HASH algorithm described in the step b.
User Identity described in the step a is IMSI International Mobile Subscriber Identity IMSI.
Described system is the WCDMA network.
The present invention is for the MS that uses the Iu interface, receives RRC-Initial-direct-transfer message from MS have TMSI/PTMSI to use in message when the RAN node, and the RAN node will be derived NRI from some bit of TMSI/PTMSI.Have IMSI to use in message, the RAN node will be from the IMSI value of deriving V close because RAN has preserved the correspondence of value V and CN node, so the RAN node pairing CN node of this value V that can obtain calculating, and with forwards to this CN node.
Use method of the present invention, support under the Iu-Flex characteristic situation at RAN node and CN node, for IDNNS not being provided or the message from MS of IDNNS can not correctly being provided, can be distributed to different CN nodes by the RAN node, avoid selecting the CN algorithm of nodes to want MS to participate in, if algorithm upgrading so only needs the network side update algorithm to get final product according to IMSI, end side need not to change, so handled easily.
Description of drawings
Fig. 1 is a WCDMA networking schematic diagram in the prior art;
Fig. 2 is the process of prior art accessing user terminal to network in the WCDMA system;
Fig. 3 is for realizing the schematic flow sheet of the inventive method;
Fig. 4 is for realizing the schematic flow sheet of the embodiment of the invention;
Fig. 5 is after using method user terminal access of the present invention, initiates the schematic flow sheet that the position is upgraded.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Method of the present invention is: in a RAN and system that an above CN node links to each other, MS sends the request of access to RAN, wherein contains self User Identity; RAN selects core net node according to this User Identity after receiving this access request, and the request that should insert sends to described CN node; Described CN node distributes a TMSI/PTMSI who contains self NRI information for this user terminal, and the access success response that will contain described TMSI/PTMSI sends to user terminal by RAN.
Referring to shown in Figure 3, realize that the detailed process of the inventive method is as follows:
Step 301: user terminal sends the request of access to Access Network, wherein contains self User Identity;
Step 302: Access Network is selected core net node according to this User Identity after receiving this access request, and the request that should insert sends to described core net node;
Step 303: described core net node distributes an interim moving station mark TMSI/PTMSI who contains self network resource identifier NRI information for this user terminal, and the access success response that will contain described TMSI/PTMSI sends to user terminal by Access Network.
Selecting the step of core net node according to this User Identity in the above-mentioned steps 302 can be directly to obtain in the corresponding relation according to Subscriber Number section of preserving among the RAN and CN node, also can calculate according to User Identity by certain algorithm, also can be by polling, or select according to the priority that sets in advance.
Preferable a kind of mode is with described User Identity input HASH algorithm, calculates a numerical value (being called value V among the embodiment), and from numerical value and the corresponding relation between the CN node that RAN preserves in advance, the CN node of this numerical value correspondence that obtains calculating.
Need to prove: " HASH " generally is translated into " hash ", also has direct transliteration to be " Hash ", is exactly the input with random length, be called pre-mapping (pre-image) again, by hashing algorithm, be transformed into the output of regular length, this output is exactly hashed value.This conversion is a kind of compressing mapping, and just, much smaller than the space of input, different inputs may hash to identical output usually in the space of hashed value, and can not come unique definite input value from hashed value.Formulation is: h=H (M), and wherein H () is an one-way hash function, and M is the random length plaintext, and h is the regular length hashed value.
After MS is linked into network, when MS carries out Signalling exchange by RAN and CN, MS can send the message that contains described TMSI/PTMSI to RAN, the TMSI/PTMSI that contains in the message of RAN according to the MS transmission analyzes and draws NRI, again according to the NRI that self preserves and the corresponding relation of CN node, determine the pairing CN node of NRI in this temporary identity sign, and then RAN can send to this signaling message determined CN node.
And MS can be that location update request message, call request message, handoff request message or short message send a request message or the like to the signaling message that the CN node sends by RAN, so long as need get final product with the CN interactive messages.
Referring to shown in Figure 4, the present invention realizes that the detailed process of accessing user terminal to network is as follows:
Step 401:MS sends the RRC signaling contain self IMSI to RAN and connects (RRC-Initial-direct-transfer) message.
After step 402:RAN receives this RRC-Initial-direct-transfer message, determine to serve the CN node of MS according to the IMSI of this MS.
Because the IMSI number is long, directly preserve the complexity of the corresponding relation increase RAN between IMSI and the CN node, in order to guarantee MS is tried one's best uniform distribution to the CN node simultaneously, therefore in step 402, can adopt following way:
After RAN receives RRC-Initial-direct-transfer message, can from RRC-Initial-direct-transfer message, obtain IMSI, and IMSI is imported the HASH algorithm, thereby obtain a value V, as V=IMSI mod 1000, and each value V is corresponding to a single CN node.And, also need on the RAN node, dispose the corresponding relation of V and CN node.Like this, the corresponding relation between IMSI and the CN node is presented as: the corresponding relation of IMSI and value V, and the corresponding relation of value V and CN node.Like this, after MS is linked into network, when RAN receives the signaling message of MS transmission, if IMSI can use, the HASH algorithm that RAN can directly utilize the IMSI input of this user terminal self to be provided with, the value of obtaining V, the corresponding relation of the V of utilization value then index value V and CN node, thus obtain the CN node of this MS correspondence.
Step 403:RAN sends to selected CN node with RRC-Initial-direct-transfer message.
After step 404:CN node is received this RRC-Initial-direct-transfer message, this user terminal carried out authentication after, be that this user terminal distributes a TMSI/PTMSI, and this access success response that contains TMSI/PTMSI sent to RAN.
Here, include the specific bit position among the TMSI/PTMSI, be used to represent the NRI of this CN node correspondence, as: as NRI, or utilize the value of some bit can directly utilize certain algorithm to derive the NRI of this CN node correspondence 10 bits between the 14th bit to the 23 bits of TMSI/PTMSI.
After step 405:RAN receives this response, this response is sent to this MS.If RAN does not have the corresponding relation between pre-configured NRI and the CN node, can in this step, preserve the corresponding relation between NRI and the CN node.
After this, when user terminal when RAN sends signaling message, if TMSI/PTMSI can use, then RAN can directly utilize TMSI/PTMSI to draw NRI, this signaling message is sent to the CN node of this NRI correspondence again.
Below with MS insert successfully the back initiate the position more new technological process be example, illustrate for inserting RAN afterwards for processing procedure from the signaling message of MS.
Referring to shown in Figure 5, its particular location renewal process is as follows:
Step 501:MS sends position updating request to RAN, wherein contains the TMSI/PTMSI of self.
Step 502: after RAN receives this position updating request, from TMSI/PTMSI, obtain NRI, and utilize the NRI that self preserves and the corresponding relation between the CN node, obtain the CN node of this NRI correspondence, then this position updating request is sent to this CN node.
If directly comprise NRI among the TMSI/PTMSI, the value that this moment, RAN can directly read the specific bit position can obtain, if TMSI/PTMSI has included only the information of the NRI that can derive, then need will from certain bits, read information draw according to certain algorithm computation that sets in advance and get final product.
Step 503: receive this position updating request when the CN node, this MS is carried out the position updating process of standard.
In addition, for RAN, if comprise effective IDNNS cell in the Initial-direct-transfer message, RAN is to use the routing parameter field in the IDNNS cell still to utilize IMSI/PTMSI/TMSI parameter in the NASmessage cell to select CN node with this MS contact, is configurable.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1, a kind of method of user terminal access of radio network is applied to it is characterized in that this method may further comprise the steps in an Access Network RAN and the system that an above core net node links to each other:
A. user terminal sends the request of access to Access Network, wherein contains self User Identity;
B. after Access Network is received this access request, select core net node according to this User Identity, and the request that should insert sends to described core net node;
C. described core net node distributes an interim moving station mark TMSI/PTMSI who contains self network resource identifier NRI information for this user terminal, and the access success response that will contain described TMSI/PTMSI sends to user terminal by Access Network.
2, method according to claim 1, it is characterized in that: step b is described to be to obtain according to Subscriber Number section of preserving in advance and the corresponding relation between the core net according to this User Identity selection core net node, or, the certain algorithm computation of described User Identity input is gone out a numerical value, and from numerical value and the corresponding relation between the core net node that Access Network is preserved in advance, the core net node of this numerical value correspondence that obtains calculating, or by the polling acquisition, or according to the priority selection that sets in advance.
3, method according to claim 1 is characterized in that: after step c, this method further comprises:
D1, Access Network are derived NRI according to TMSI/PTMSI after receiving the message that contains described TMSI/PTMSI of user terminal transmission, according to the NRI that self preserves and the corresponding relation of core net, determine the pairing core net node of this NRI;
D2, Access Network send to this message the core net node of determining in the steps d 1.
4, method according to claim 1 is characterized in that: directly comprise the NRI of one or more bits in TMSI/PTMSI described in the step c, the NRI in the steps d 1 directly obtains,
Comprise numerical value one or more bits, that can derive NRI in TMSI/PTMSI described in the step c, then the NRI in the steps d 1 derives NRI according to the certain algorithm of this numerical value utilization.
5, method according to claim 3 is characterized in that: message described in the steps d 1 is location update request message, or is call request message, or is handoff request message, or sends a request message for short message.
6, method according to claim 2 is characterized in that: certain algorithm is the HASH algorithm described in the step b.
7, method according to claim 1 is characterized in that: User Identity described in the step a is IMSI International Mobile Subscriber Identity IMSI.
8, method according to claim 1 is characterized in that, described system is the WCDMA network.
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| CNB2005100663299A CN100477859C (en) | 2005-04-22 | 2005-04-22 | Method for user terminal accessing in network |
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| CN101184114B (en) * | 2007-10-31 | 2010-06-02 | 中兴通讯股份有限公司 | Method of distributing packet domain temporary mobile subscriber sign |
| WO2010097001A1 (en) * | 2009-02-24 | 2010-09-02 | 中兴通讯股份有限公司 | Data service processing method, system and access network |
| CN102355688A (en) * | 2011-09-05 | 2012-02-15 | 大唐移动通信设备有限公司 | Equipment testing system and method |
| US9408255B2 (en) | 2010-01-08 | 2016-08-02 | Huawei Technologies Co., Ltd. | Method for migrating user plane from Iur-g interface to A interface and corresponding apparatus |
| US9510178B2 (en) | 2012-01-09 | 2016-11-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for allowing a successful first mobile terminated call towards a mobile subscriber initially assigned to a failing core network node |
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- 2005-04-22 CN CNB2005100663299A patent/CN100477859C/en active Active
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| US8238909B2 (en) | 2007-07-27 | 2012-08-07 | Huawei Technologies Co., Ltd. | Method and apparatus for identifying user equipment, and method for transmitting and allocating a temporary identifier |
| CN101355793B (en) * | 2007-07-27 | 2011-08-31 | 华为技术有限公司 | Method and apparatus for recognizing user equipment as well as method for transferring and distributing temporary mark |
| US11991777B2 (en) | 2007-07-27 | 2024-05-21 | Huawei Technologies Co., Ltd. | Communication method and apparatus |
| US8200220B2 (en) | 2007-07-27 | 2012-06-12 | Huawei Technologies Co., Ltd. | Method and apparatus for identifying user equipment, and method for transmitting and allocating a temporary identifier |
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| US9288779B2 (en) | 2007-07-27 | 2016-03-15 | Huawei Technologies Co., Ltd. | Method and apparatus for identifying user equipment, and method for transmitting and allocating a temporary identifier |
| WO2009015595A1 (en) * | 2007-07-27 | 2009-02-05 | Huawei Technologies Co., Ltd. | Method and device for identifying user device and method for transmitting and allocating temporary identity |
| US11979938B2 (en) | 2007-07-27 | 2024-05-07 | Huawei Technologies Co., Ltd. | Communication method and apparatus |
| US11363442B2 (en) | 2007-07-27 | 2022-06-14 | Huawei Technologies Co., Ltd. | Method and apparatus for identifying user equipment, and method for transmitting and allocating a temporary identifier |
| CN101184114B (en) * | 2007-10-31 | 2010-06-02 | 中兴通讯股份有限公司 | Method of distributing packet domain temporary mobile subscriber sign |
| WO2010097001A1 (en) * | 2009-02-24 | 2010-09-02 | 中兴通讯股份有限公司 | Data service processing method, system and access network |
| US9408255B2 (en) | 2010-01-08 | 2016-08-02 | Huawei Technologies Co., Ltd. | Method for migrating user plane from Iur-g interface to A interface and corresponding apparatus |
| CN102355688A (en) * | 2011-09-05 | 2012-02-15 | 大唐移动通信设备有限公司 | Equipment testing system and method |
| US9510178B2 (en) | 2012-01-09 | 2016-11-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for allowing a successful first mobile terminated call towards a mobile subscriber initially assigned to a failing core network node |
| US10779262B2 (en) | 2015-12-30 | 2020-09-15 | Huawei Technologies Co., Ltd. | Communication method and apparatus |
| CN106937356B (en) * | 2015-12-30 | 2020-12-01 | 华为技术有限公司 | Communication method and device |
| CN106937356A (en) * | 2015-12-30 | 2017-07-07 | 华为技术有限公司 | A kind of communication means and device |
| WO2020000174A1 (en) * | 2018-06-26 | 2020-01-02 | Oppo广东移动通信有限公司 | Core network selection method and apparatus, terminal device and network device |
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Effective date of registration: 20211228 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |