CN101052206A - Mobile terminal network attaching method - Google Patents
Mobile terminal network attaching method Download PDFInfo
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- CN101052206A CN101052206A CNA2006100670916A CN200610067091A CN101052206A CN 101052206 A CN101052206 A CN 101052206A CN A2006100670916 A CNA2006100670916 A CN A2006100670916A CN 200610067091 A CN200610067091 A CN 200610067091A CN 101052206 A CN101052206 A CN 101052206A
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Abstract
The method comprises: radio access network knows the mobile terminal is attached with the broadcast system information about the invalidity of core network equipment and carries the ID of the invalid core network equipment; according to the ID of invalid core network equipment, the mobile terminal decides if it will be attached to the invalid core network equipment; if yes, then initiating an attachment; otherwise, not making process.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to after equipment of the core network lost efficacy, portable terminal attached to it carries out the method for network attachment again.
Background technology
(Universal Mobile Telecommunications System is a kind of third generation cordless communication network of 3GPP tissue definition UMTS) to universal mobile telecommunications system, and its network configuration as shown in Figure 1.The UMTS network is made up of core net, wireless access network and subscriber equipment.Core net comprises circuit domain and packet domain, and circuit domain provides based on Circuit-switched business (for example speech business), and packet domain provides the business based on packet switching (for example Internet visit).Wireless access network provides wireless air interface, and subscriber equipment is the terminal equipment that the user uses.
Packet domain core network by Serving GPRS Support Node (Serving GPRS Support Node, SGSN), Gateway GPRS Support Node (Gateway GPRS Support GGSN) forms; Circuit domain core net be moving exchanging center MSC (Mobile Switching Center, MSC); (Radio Network Controller RNC) forms with cell base station NodeB wireless access network by radio network controller.Each SGSN can be connected several RNC with MSC, and each RNC can connect several NodeB.The wireless access network of forming by RNC and NodeB in the UMTS network, be called as the UMTS Terrestrial radio access network network (UMTS Terrestrial Radio Access Network, UTRAN).
Current, 3GPP organizes and studies the UMTS network next generation network of evolution (being also referred to as evolvement network) backward, and formulates the technical standard of evolvement network.Evolvement network will have a lot of new characteristics, and for example: the packet-type business only is provided, and real time business such as voice, visual telephone also will provide in the mode of grouping; Realize complete IP network, each node device interconnects by IP network in the network, and each portable terminal adheres to distributing IP address, back.The topological structure of evolvement network can improve the reliability of network.
Referring to Fig. 2, be the chief component schematic diagram of evolvement network.Evolvement network is made up of three parts: evolution wireless access network E-RAN (Evolved Radio Access Network), evolution block core net (Evolved Packet Core, EPC) and travelling carriage (Mobile Station, MS) (travelling carriage is a portable terminal).Three logical functional entities are arranged in the evolution block core net: Mobility Management Entity (MobilityManagement Entity, MME), user entity (User Plane Entity, anchor point UPE) and between connecting system (Inter AS Anchor, IASA).
MME is used to realize mobile management, UPE is used to realize the processing of packet sessions management and user plane packets data, IASA is used to realize evolvement network and external packet data net (Packet Data Network, switching and roaming function between access PDN) and evolvement network and other the non-3GPP networks (as WLAN (wireless local area network) WLAN).The evolution wireless access network mainly provides wireless air interface (for example wireless channel), and the relevant function (for example power control, RRM) of Radio Resource.Be the S1 interface between evolution wireless access network and the evolution block core net, the interface between evolution block core net and the external packet data net is the Gi interface.
How three logical functional entity MME, UPE are deployed in different physical equipments with IASA, and the 3GPP tissue does not determine that at present four kinds of possible modes are arranged,
Three logical functional entities of mode one: MME/UPE/IASA are positioned at same physical equipment;
Mode two: MME/UPE is incorporated in a physical equipment, and IASA is positioned at another physical equipment;
Mode three: UPE and IASA are incorporated in a physical equipment, and MME is positioned at another physical equipment;
Three entities of mode four: MME/UPE/IASA are separated from each other;
The present invention is applicable to above four kinds of modes, and in order more clearly to describe technical characterictic of the present invention, the present invention is an example in mode one, and promptly as shown in Figure 2, three logical functional entities of MME/UPE/IASA are positioned at same physical equipment, i.e. EPC equipment.
Referring to Fig. 3, be the networking structure of evolvement network.In evolvement network networking structure shown in Figure 3, by the interconnection of IP bearer network, i.e. the transmission of S1 interface is provided by the IP transmission network between EPC equipment and the E-RAN, so EPC equipment and the interconnection of E-RAN multi-to-multi.Some EPC equipment are formed an EPC equipment pond, and the area of coverage of all E-RAN that are attached thereto forms pool area (Pool Area).When MS enters this pool area for the first time, select a suitable EPC equipment to provide service (for example selecting the lighter EPC equipment of load) for this MS by E-RAN.In pool area, will provide service for MS by same EPC equipment, this EPC equipment is service EPC equipment.Only under abnormal conditions when restarting (for example EPC apparatus overload or), MS will be transferred to other EPC equipment, and service EPC equipment just changes.
With the UMTS network class seemingly, in evolvement network, must at first select network and carry out network registry after the MS start, the business that MS could use evolvement network to provide after the successfully registration is provided.Network registry is exactly the process that MS is attached to the evolution core net, evolvement network carries out authentication to MS, authentication success back evolution block core net is that MS distributes temporary mark and IP address, creates communication context information, sets up default IP carrying (default IP carrying is used to carry some special business, for example the SIP signaling data of the business that need not charge, IMS business etc.).The overlay area of evolvement network is divided into different tracking areas, and (Tracking Area, TA), each tracking area is by tracking area identification (Tracking Area Identity, TA ID) unique identification.MS has the one-period timer, is used for regularly (about 40 minutes～several hrs) and triggers periodically TA renewal.Overtime or the MS of cycle timer moves to new tracking area, will trigger more new technological process of TA, and flow process and network registry flow process that TA upgrades are similar.Carry out network attachment or TA more during new technological process, if service EPC equipment failure, E-RAN can select new EPC equipment as service EPC equipment.
Referring to Fig. 4, be the network attachment schematic flow sheet of evolvement network, the step that MS carries out network attachment comprises:
1, after the start, the MS search network.If (for example find plurality of network; UMTS network, evolvement network), MS need select suitable network.At this, MS has selected evolvement network (having exceeded the scope of the invention about how selecting network, this ominous stating).
2, MS sends Attach Request message to EPC equipment, carries user ID in the message.After E-RAN received Attach Request message, E-RAN was that MS selects a suitable EPC equipment, and Attach Request message is routed to this EPC equipment (how selecting EPC equipment to exceed the scope of the invention about E-RAN, this ominous stating).
3, (Home Subscriber Server HSS) carries out authentication (having exceeded the scope of the invention about authentication process, this ominous stating) with EPC equipment to MS to home subscriber servers.
4, after the authentication success, EPC equipment sends login request message to HSS, carries the EPC equipment mark in the message at least.
5, HSS stores the EPC equipment mark and replys a registration confirmation message, carries this mobile subscriber's subscription data in message;
6, after HSS succeeded in registration, EPC equipment was that MS distributes temporary mark and IP address, for MS creates communication context information and sets up default IP carrying.
7, EPC equipment is replied one to MS and is adhered to and accept message, carries temporary mark and the IP address distributed into MS in the message, also carries period T A in the message and upgrades timer duration.(Network Resource Identity NRI), as in P-TMSI, has 10Bit to be used to represent NRI to carry the network resource identifier of EPC equipment in EPC equipment pond in the temporary mark.
8, parameters such as the temporary mark accepting to carry in the message, IP address are adhered in MS storage.Carry new temporary mark or IP address in the acknowledge message if adhere to, MS need adhere to acknowledge message to one of EPC device acknowledge, indicates new temporary mark or IP address to be used.So far, MS successfully has been registered to evolvement network, has obtained temporary mark and IP address.
If 9 MS have IP Multimedia System (IP Multimedia System, IMS) ability and user need use the IMS business, MS will carry out IMS registration.(having exceeded the scope of the invention about the IMS registration process) this ominous stating
In the evolvement network, MS has two states: Idle state LTE-Idle and activated state LTE-Active.MS finishes network registry afterwards if there is not transfer of data, then is discharged into the LTE-Idle attitude by the LTE-Active attitude.Under the LTE-Idle attitude, EPC equipment is preserved contextual information, IP address and the default IP carrying of MS, and E-RAN will discharge the Internet resources of MS, the contextual information of deletion MS, not have data link between EPC equipment and the MS.If when needing to transmit data or carrying out other signaling activities (for example position renewal activity) between MS and the network, MS is moved to the LTE-Active attitude again.Under the LTE-Active attitude, E-RAN has the contextual information of MS, and MS is assigned radio channel resource, transmitting grouped data and signaling message at any time between MS and the network.
When EPC apparatus overload or preparation were restarted, part or all of mobile subscriber wherein can be transferred in other the EPC equipment, provided service by other EPC equipment.But if service EPC equipment failure (for example equipment fault, device damage, systemic breakdown or power down), ongoing communication service is interrupted in the EPC equipment.At this moment, if MS does not initiate new service call, and network is when having downlink data need send to MS (having grouped data will send to MS as the external packet data network), because service EPC equipment is unavailable, can't connect with MS, data can not be sent to MS by EPC equipment and be dropped, so downlink business can not be set up.Only when MS carries out tracing section updating, could select another available EPC equipment as service EPC equipment, set up descending called service by re-executing the network attachment process.
Usually, MS can upgrade by execution cycle property TA, but cycle time long (40 minutes～several hrs), therefore, a very long time after the EPC equipment failure, the called service of MS can't be set up.
Equally, in the UMTS network, when SGSN lost efficacy, there is not solution to solve affected portable terminal can not be set up downlink business in a period of time problem yet.Therefore, lost efficacy at UMTS server net (SGSN in circuit domain core net MSC or the packet domain core network), and after the EPC equipment failure in evolvement network, how to guarantee that affected portable terminal keeps follow-up business, be the problem that UMTS network and evolvement network need solve.
Summary of the invention
The invention provides a kind of method of re-attaching network of mobile terminal, in order to solve in the prior art after the equipment of the core network inefficacy, network can't be set up the problem of downlink business for affected user in a period of time.
The inventive method comprises:
Wireless access network is known the equipment of the core network inefficacy back broadcast system information that portable terminal adheres to, and carries inefficacy equipment of the core network sign;
Portable terminal identifies the equipment of the core network that judges whether to be attached to this inefficacy according to this equipment of the core network, if then initiate network attachment; Otherwise, do not deal with.
Described inefficacy equipment of the core network is designated the unique identification of this equipment of the core network in network, or the sign in affiliated equipment of the core network pond.
According to said method of the present invention, described portable terminal identifies the equipment of the core network that judges whether to be attached to this inefficacy according to described inefficacy equipment of the core network, comprises step:
The local equipment of the core network sign of preserving of described inefficacy equipment of the core network sign and portable terminal is compared,, judge that then this portable terminal is attached to the equipment of the core network of described inefficacy if identical; Otherwise, judge that this portable terminal is not attached to the equipment of the core network of described inefficacy.
According to said method of the present invention, described wireless access network knows that described equipment of the core network lost efficacy, and comprised step:
When described wireless access network detects the transmission link fault of described equipment of the core network, judge that described equipment of the core network lost efficacy; Or
When described wireless access network is not received the detecting periodically message that described equipment of the core network sends at the appointed time, judge that described equipment of the core network lost efficacy; Or
When described wireless access network is received the information of the described equipment of the core network inefficacy that Operation ﹠ Maintenance System sends, determine that described equipment of the core network lost efficacy.
After described wireless access network knows that equipment of the core network lost efficacy, immediately or postpone the described system information of broadcasting.
According to said method of the present invention, carry network attachment time limit parameter in the described system information of described wireless access network broadcasting, indicating mobile terminal is initiated network attachment in the time of this time limit parameter appointment.
After described portable terminal is received described system information, be no more than the random time length of this time limit parameter value according to one of the described network attachment time limit parameter generating of carrying, and pick up counting;
When timing time reached this random time length, described portable terminal was initiated network attachment.
The cycle that described network attachment time limit parameter value upgrades less than the period tracking district.
If described network attachment time limit parameter value is zero, then portable terminal is initiated network attachment immediately after receiving the system information of broadcasting.
According to said method of the present invention, after portable terminal is initiated network attachment, select the service core net equipment of a new equipment of the core network in the equipment of the core network pond of described wireless access network under the inefficacy equipment of the core network as described portable terminal;
Described portable terminal is attached on this new equipment of the core network.
According to said method of the present invention, described wireless access network is evolution wireless access network E-RAN, and described equipment of the core network is an evolution block core net EPC equipment; Or
Described wireless access network is wireless access network RAN or UMTS network wireless Access Network UTRAN, and described equipment of the core network is service universal grouping wireless business supporting node SGSN or moving exchanging center MSC.
Beneficial effect of the present invention is as follows:
(1) adopts the present invention, after equipment of the core network lost efficacy, can in time initiate network attachment again attached to the portable terminal in this equipment of the core network, transferred to by wireless access network and to continue as the user in other equipments of the core network and provide professional, avoid network in a period of time, can't set up downlink business for affected user.
(2) after wireless access network knows that equipment of the core network lost efficacy, delay a period of time is the portable terminal broadcast system information in its overlay area again, thereby has avoided causing network over loading because of the network attachment request that the equipment of the core network inefficacy causes wireless access network to handle a large amount of affected portable terminals when discharging a large amount of Internet resources.
(3) wireless access network carries in the system information of broadcasting to portable terminal and adheres to the time limit parameter, makes the portable terminal that is subjected to the equipment of the core network failure effect initiate network attachment in the time of this time limit appointment.
(4) be subjected to the portable terminal of equipment of the core network failure effect according to network attachment time limit parameter generating random time value, and when timing time reaches this random time, initiate network attachment, thereby avoided synchronization to have a large amount of portable terminals to initiate network attachment and cause wireless access network and the core net overload.
Description of drawings
Fig. 1 is a UMTS schematic network structure of the prior art;
Fig. 2 is the chief component schematic diagram of evolvement network in the prior art;
Fig. 3 is the networking structure schematic diagram of evolvement network in the prior art;
Fig. 4 is the network attachment flow chart of evolvement network in the prior art;
Fig. 5 is the schematic flow sheet of equipment of the core network of the present invention network attachment after losing efficacy;
Fig. 6 is the network attachment flow chart during the EPC equipment failure in the evolvement network of the present invention.
Embodiment
Thinking of the present invention is: after Access Network knows that equipment of the core network lost efficacy, indicate all affected portable terminals to carry out network attachment by broadcast system information, after portable terminal completes successfully network attachment, be transferred in other equipments of the core network.
Referring to Fig. 5, be the schematic flow sheet of the network attachment after the equipment of the core network inefficacy of the present invention, concrete steps comprise:
S1, wireless access network know that equipment of the core network lost efficacy.
Wireless access network knows that the method that equipment of the core network lost efficacy has three kinds at least:
1) judges by the transmission link that detects the S1 interface whether equipment of the core network lost efficacy.For example, if all transmission link fault or interruptions of S1 interface can think that then this equipment of the core network lost efficacy.
2) judge by detecting the detecting periodically message that sends between Access Network and the equipment of the core network whether equipment of the core network lost efficacy.If Access Network is not received the probe message of equipment of the core network in a period of time, think that then this equipment of the core network lost efficacy.
3) by Operation and Maintenance O﹠amp; The M order knows that equipment of the core network lost efficacy.Lost efficacy in case Operation ﹠ Maintenance System detects equipment of the core network, Operation ﹠ Maintenance System sends O﹠amp to all wireless access networks that link to each other with the equipment of the core network of this inefficacy; The M order indicates this equipment of the core network and lost efficacy.
S2, wireless access network are after postponing a period of time, and the portable terminal in its overlay area is broadcasted specific system information.
Usually, wireless communication system all provides broadcast channel, is used for the system information of all portable terminal radio networks in the overlay area, for example operator's informaiton, network characteristic information, wireless access parameters etc.After wireless access network knows that certain equipment of the core network lost efficacy, all the portable terminal broadcasting specific system information of wireless access network in the overlay area, this system information is used to refer to the portable terminal that is subjected to the equipment of the core network failure effect and carries out network attachment.
Because after equipment of the core network lost efficacy, wireless access network will discharge the shared resource of all portable terminals that influenced by it.When Access Network knows that certain equipment of the core network lost efficacy, wireless access network is being carried out a large amount of resource releasing processing, discharge those and before equipment of the core network loses efficacy, carrying out the professional shared Radio Resource of portable terminal, if this moment, the broadcast system message indicating mobile terminal was carried out network attachment, a large amount of mobile terminal request are carried out network attachment will sharply increase the load of wireless access network and equipment of the core network.Therefore, wireless access network can detect a period of time that equipment of the core network lost efficacy (for example 5 minutes, specific implementation can be by passing through O﹠amp; M disposes) after, broadcast specific system information again, can effectively avoid network over loading like this.
The system information of broadcasting is carried following parameter at least:
1) inefficacy equipment of the core network sign
This sign can be the unique identification of equipment of the core network in whole network, it also can be the sign of this equipment of the core network of identification in the equipment of the core network pond that only is used under it, network resource identifier (NetworkResource Identity for example, NRI), the unique corresponding equipment of the core network of each NRI.Must carry this inefficacy equipment of the core network sign in the system information, otherwise also can carry out network attachment according to the indication of system information attached to the portable terminal in other equipments of the core network.
2) network attachment time limit value
This time limit value is used to indicate the portable terminal that is subjected to the equipment of the core network failure effect, from receiving the system information of broadcasting, must initiate network registry in the time of appointment.Be set to 0 if will be worth in the time limit, then indicating mobile terminal is initiated network attachment immediately after receiving the system information of broadcasting.The time limit value should be not more than the cycle that TA of following cycle of normal condition upgrades.
After S3, portable terminal are received specific system information, judge self whether attached on the equipment of the core network that lost efficacy, if, execution in step S5 then; Otherwise, execution in step S4.
After portable terminal is received specific system information, the inefficacy equipment of the core network sign of carrying in the system information is made comparisons with the equipment of the core network sign of mobile terminal stores, if both are identical, illustrate that then the equipment of the core network that this portable terminal adheres to lost efficacy, this portable terminal can be subjected to the influence that equipment of the core network lost efficacy, and need initiate network attachment according to the indication of system information; If both differences then illustrate the influence that this portable terminal was not lost efficacy by equipment of the core network, portable terminal is not done any processing.
S4, portable terminal are not then done any processing if judge the influence that it was not lost efficacy by equipment of the core network.
S5, portable terminal judge that whether network attachment time limit value is zero, if, execution in step S8 then; Otherwise, execution in step S6.
S6, portable terminal produce the random time number according to network attachment time limit value, and the opening timing device are set.
If in step S3, portable terminal judges that the equipment of the core network that adheres to lost efficacy, and then also wants the network attachment time limit value (supposition numerical value is K) of carrying in the further check system information.If K=0, then portable terminal is initiated network attachment immediately; Otherwise portable terminal produces the random time length of a 0～K, and uses this random time value setting and start a timer and pick up counting.The timer that starts can be the cycle timer that control cycle TA upgrades, and also can be the specific timing device, or other timers.
S7, portable terminal judge whether timer is overtime, if, execution in step S8 then; Otherwise continuation keeps the time status of timer.
Network attachment is initiated and finished to S8, portable terminal.
If the timer expiry that portable terminal starts in step S7 then in this step, need stop timer, concurrent network adheres to.If judge network attachment time limit parameter value K=0 in step S5, then portable terminal can be initiated network attachment immediately after receiving the system information of broadcasting.
The process of network attachment, the network attachment process during with mobile terminal-opening is identical.Because the service core net equipment failure of current mobile terminal, therefore in the network attachment process, wireless access network selects a new equipment of the core network to provide service for portable terminal in the equipment of the core network pond, and selected equipment of the core network becomes the new service core net equipment of portable terminal.New service core net equipment is that portable terminal distributes temporary mark, distributing IP address, creates communication context information, sets up default IP carrying.
Portable terminal successfully is attached to after the new equipment of the core network, if this portable terminal has the IMS ability and the user need use the IMS business, then portable terminal is carried out the IMS registration.The IMS registration of this moment is identical with the IMS registration that carry out the start back.After finishing the IMS registration, the service core net device address of portable terminal and the IP address of portable terminal successfully are registered to the IMS system.
So far, be subjected at the appointed time interior other equipments of the core network of successfully being transferred in the equipment of the core network pond of portable terminal of equipment of the core network failure effect.
Portable terminal successfully is attached to after new equipment of the core network and the IMS system, and all business of this portable terminal can normally be set up.When network has downlink data to send to MS, can be sent to MS by the data link that current service core net equipment is set up, descending called service is normally carried out.
Said method can be applicable to the 3G system, as UMTS, also can be applied to evolvement network.In the UMTS network, after core net MSC or SGSN inefficacy, know that by wireless access network UTRAN core net MSC or SGSN lost efficacy, carry out system message broadcasting, and the processing of network attachment.In evolvement network, after core net EPC equipment failure, know the EPC equipment failure, carry out system message broadcasting by evolution wireless access network E-RAN, and the processing of network attachment.
Be example below with the evolvement network, the network attachment process of portable terminal after the EPC equipment failure is described in detail.
Referring to Fig. 6, be the network attachment flow chart during the EPC equipment failure in the evolvement network of the present invention.This EPC equipment is MME/UPE/IASA equipment.Suppose by K EPC equipment and form EPC equipment pond have N E-RAN and EPC equipment pond to interconnect, M MS arranged attached to EPC by IP network
1In the EPC equipment pond, EPC
1Operation is normal.At EPC
1Be attached with M MS, these MS comprise MS that is in Idle state and the MS that is in connected state.E-RAN is not the MS distributing radio resource of Idle state, and is that the MS of connected state is assigned Radio Resource.EPC
1After the inefficacy, attached to EPC
1On M MS be attached to EPC again
KProcess, comprising:
1, EPC
1Lost efficacy, reason may be equipment fault, device damage, systemic breakdown.
2, E-RAN is known EPC
1Lost efficacy.For example, Operation ﹠ Maintenance System is through O﹠amp; All E-RAN, EPC are notified in the M order
1Lost efficacy, perhaps, can judge EPC by detecting the bearing link of S1 interface
1Fault.
3, know EPC
1Lost efficacy after a period of time, E-RAN increases special indication information in the system information of broadcasting, comprise inefficacy EPC equipment mark and network attachment time limit value in the indication information.E-RAN is continuous transmitting system information on broadcast channel.
4, after MS received system information, the parameter that check system information is carried was if carry inefficacy EPC equipment mark (for example, EPC in the system information
1NRI sign), and identical with the EPC equipment mark of MS storage, the EPC that this MS adheres to is described
1Lost efficacy, MS will be subjected to EPC
1The influence of losing efficacy needs to initiate network attachment according to the system information that receives.If two EPC device identifications are inequality, illustrate that MS is not attached to EPC
1, then MS no longer carries out follow-up flow process.
5, be subjected to EPC
1The network attachment time limit value of carrying in the further check system information of the MS of failure effect (hypothetical network setting stage limit value is K), MS produces the random time value of a 0～K, and MS uses this random time value setting and starts a timer.
6, timer expiry is subjected to EPC
1The MS of failure effect initiates the network attachment flow process.
The network attachment flow process of carrying out when the implementation of network attachment flow process and MS start identical (referring to the step 1 among Fig. 4～8).Carry out in the new network attachment process, E-RAN is that MS selects new EPC equipment as service EPC equipment.In the present embodiment, EPC
KSelected conduct new service EPC equipment.For different MS, E-RAN may select the service EPC equipment of different EPC equipment as each MS, selects the algorithm of service EPC equipment to realize relevant with E-RAN.When MS initiates the network attachment flow process, also timer to be stopped timing.
7, be subjected to EPC
1The MS of failure effect successfully is attached to EPC
KAfterwards, if this MS has the IMS ability and the user need use the IMS business, then this MS also will carry out the IMS registration.The IMS registration process of this moment, the IMS registration process of carrying out when starting shooting with MS is identical.
In above-mentioned flow process, if in step 5, MS judges network attachment time limit value position K=0, and then MS carries out network attachment immediately.
In addition, E-RAN can stop the broadcasting of customizing messages broadcasting specific system information after a period of time, and the time span of E-RAN broadcasting can be set or configuration according to the experience of the network operation.
Describe as can be known by above flow process, after equipment of the core network lost efficacy, can in time initiate network attachment again attached to the portable terminal in this equipment of the core network, transferred to by wireless access network and to continue as the user in other equipments of the core network and provide professional, avoid network in a period of time, can't set up downlink business for affected user.In addition, wireless access network, is handled and is caused network over loading thereby avoided Access Network to carry out a large amount of network attachment when discharging a large amount of Internet resources again to the portable terminal broadcast system information through the delay of short time after knowing that equipment of the core network lost efficacy.Wireless access network carries in the system information of portable terminal broadcasting and adheres to the time limit parameter, the portable terminal that is subjected to the equipment of the core network failure effect is according to this time limit parameter generating random time value, and according to this random time value initiation network attachment, guaranteed that portable terminal all initiates network attachment again in the network attachment of appointment in the time limit, and the load of simultaneously balanced wireless access network and equipment of the core network, avoid synchronization to have a large amount of portable terminals to initiate network attachment and strengthened offered load.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1, a kind of method of re-attaching network of mobile terminal comprises:
Wireless access network is known the equipment of the core network inefficacy back broadcast system information that portable terminal adheres to, and carries inefficacy equipment of the core network sign;
Portable terminal identifies the equipment of the core network that judges whether to be attached to this inefficacy according to this equipment of the core network, if then initiate network attachment; Otherwise, do not deal with.
2, the method for claim 1 is characterized in that, described inefficacy equipment of the core network is designated the unique identification of this equipment of the core network in network, or the sign in affiliated equipment of the core network pond.
3, the method for claim 1 is characterized in that, described portable terminal identifies the equipment of the core network that judges whether to be attached to this inefficacy according to described inefficacy equipment of the core network, comprises step:
The local equipment of the core network sign of preserving of described inefficacy equipment of the core network sign and portable terminal is compared,, judge that then this portable terminal is attached to the equipment of the core network of described inefficacy if identical; Otherwise, judge that this portable terminal is not attached to the equipment of the core network of described inefficacy.
4, the method for claim 1 is characterized in that, described wireless access network knows that described equipment of the core network lost efficacy, and comprised step:
When described wireless access network detects the transmission link fault of described equipment of the core network, judge that described equipment of the core network lost efficacy; Or
When described wireless access network is not received the detecting periodically message that described equipment of the core network sends at the appointed time, judge that described equipment of the core network lost efficacy; Or
When described wireless access network is received the information of the described equipment of the core network inefficacy that Operation ﹠ Maintenance System sends, determine that described equipment of the core network lost efficacy.
5, method as claimed in claim 4 is characterized in that, after described wireless access network knows that equipment of the core network lost efficacy, immediately or postpone the described system information of broadcasting.
6, the method for claim 1 is characterized in that, carries network attachment time limit parameter in the described system information of described wireless access network broadcasting, and indicating mobile terminal is initiated network attachment in the time of this time limit parameter appointment.
7, method as claimed in claim 6 is characterized in that, after described portable terminal is received described system information, is no more than the random time length of this time limit parameter value according to one of the described network attachment time limit parameter generating of carrying, and picks up counting;
When timing time reached this random time length, described portable terminal was initiated network attachment.
8, method as claimed in claim 6 is characterized in that, the cycle that described network attachment time limit parameter value upgrades less than the period tracking district.
9, method as claimed in claim 6 is characterized in that, if described network attachment time limit parameter value is zero, then portable terminal is initiated network attachment immediately after receiving the system information of broadcasting.
10, the method for claim 1, it is characterized in that, after portable terminal is initiated network attachment, select the service core net equipment of a new equipment of the core network in the equipment of the core network pond of described wireless access network under the inefficacy equipment of the core network as described portable terminal;
Described portable terminal is attached on this new equipment of the core network.
11, the method for claim 1 is characterized in that, described wireless access network is evolution wireless access network E-RAN, and described equipment of the core network is an evolution block core net EPC equipment; Or
Described wireless access network is the wireless access network UTRAN of wireless access network RAN or UMTS network, and described equipment of the core network is service universal grouping wireless business supporting node SGSN or moving exchanging center MSC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100670916A CN101052206B (en) | 2006-04-04 | 2006-04-04 | Mobile terminal network attaching method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100670916A CN101052206B (en) | 2006-04-04 | 2006-04-04 | Mobile terminal network attaching method |
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| Publication Number | Publication Date |
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| CN101052206A true CN101052206A (en) | 2007-10-10 |
| CN101052206B CN101052206B (en) | 2010-09-29 |
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| CN2006100670916A Expired - Fee Related CN101052206B (en) | 2006-04-04 | 2006-04-04 | Mobile terminal network attaching method |
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| CN (1) | CN101052206B (en) |
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