CN1983874A - System and method for controlling network, network controlling apparatus, and mobile terminal - Google Patents
System and method for controlling network, network controlling apparatus, and mobile terminal Download PDFInfo
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Abstract
A network control system, which controls connections between a mobile terminal and multiple types of wireless systems accommodated in a network, includes a prescribed node provided on the network. The node comprises signal transmitting/receiving means that transmits and receives a control signal defined by each of the wireless systems, protocol converting means that converts the control signal to a common protocol independent of each of the wireless systems, and entity communication controlling means that communicates with multiple functional entities provided on the network, using the common protocol, to implement network control.
Description
The application is that the original bill application number is dividing an application of 200410006039.0 application for a patent for invention (applying date: on February 25th, 2004, denomination of invention: the system and method, net control device and the portable terminal that are used for Control Network).
Technical field
The present invention relates to a kind of network control system that is used to heterogeneous wireless communication system to realize unified network management.The invention still further relates to a kind of net control device and used portable terminal in this network control system.
Background technology
What expect is: following mobile communication system will be provided at isomery and insert under the environment, and this isomery inserts all kinds of wireless systems that environment accommodates the dissimilar wireless solution of use, except WCDMA (Wideband Code Division Multiple Access (WCDMA)) and WLAN (wireless local area network) as the wireless solution of 3-G (Generation Three mobile communication system), described wireless solution also comprises wireless solution of future generation.
Japanese patent application 2000-32032 and corresponding european patent application No.98301053.9 thereof disclose a kind of network technology that is used to manage the polytype wireless system.In these communiques, made up the network corresponding with each wireless system, and by at the handover of roaming between the network between the system that realized (handover).
, when all kinds of wireless systems being contained in the public network, just there are some shortcomings in this technology.
In general, wireless system and interference networks interface are one to one.For example, the switching technology that is used to be known as the personal digital cellular (PDC) of second generation mobile communication system is primarily aimed at voice conversation service, and it utilizes synchronous transfer module (STM) to make up.Therefore, the STM interface of PDC special use is provided for the PDC network.Similarly, use the switching technology of the 3-G (Generation Three mobile communication system) of WCDMA to utilize ATM(Asynchronous Transfer Mode) to make up, ATM(Asynchronous Transfer Mode) can be used such as the various communication formats of voice and audio/video data and carry out high-speed data exchange and transfer of data.Therefore, the atm interface of WCDMA special use is provided for the WCDMA network.
PDC network and WCDMA network are managed independently of one another, operation and maintenance.Therefore, between the transfer period between the heterogeneous wireless communication system, can't join Quality of Service.In addition, when when the WCDMA network adds the PDC wireless system, must add the STM interface of PDC system-specific to the WCDMA network again, this will cause complicated network management and will increase cost.
Summary of the invention
The present invention attempts to overcome the problems referred to above, and one object of the present invention just is a kind of network control system and network control method are provided, and is used for holding the unified network management of realization on the network of a plurality of heterogeneous wireless communication systems.
Another object of the present invention provides a kind of net control device that uses and portable terminal (or station) in this network control system.
In order to realize described purpose, in one aspect of the invention, provide a kind of network control system, be used for portable terminal is controlled to the connection of the network that holds the polytype wireless system.This network control system comprises a defining node that is arranged on the network.This node comprises: signal transmission is used to send and receive the control signal that is defined by each wireless system; Protocol conversion apparatus is used for this control signal is converted to a common protocol that does not rely on each wireless system; And the entity communication control unit, be used to use a plurality of functional entitys set on this common protocol and the network to communicate, so that use this common protocol to realize network control.
In another aspect of this invention, provide a kind of net control device that is arranged on the network, be used for the connection of passing the polytype mobile terminals of wireless systems is controlled.This net control device comprises: signal transmission is used to send and receive the control signal that is defined by each wireless system; Protocol conversion apparatus is used for this control signal is converted to a common protocol that does not rely on each wireless system; And the entity communication control unit, be used to use a plurality of functional entitys set on this common protocol and the network to communicate, so that realize network control.
The signal format that protocol conversion apparatus is analyzed received control signal and rule is changed this control signal according to the rules.
The entity communication control unit is regular according to the rules one that specifies and send to through the control signal after the protocol conversion in described a plurality of functional entity.
The entity communication control unit receives the control signal comprise about the information of the wireless quality of down link signal from portable terminal, and this down link signal is sent to described portable terminal by the WAP (wireless access point) from each wireless system.The entity communication control unit also selects to be used in described a plurality of functional entity realize a functional entity of Route Selection management based on information, and uses described common protocol to come to communicate with selected functional entity.
Net control device also comprises: location registers ID management devices, be used to manage common point registration ID, and this common point registration ID is distributed to jointly by the defined a plurality of service areas of a plurality of WAP (wireless access point) of polytype wireless system; Broadcaster is used to make described a plurality of WAP (wireless access point) to broadcast this common point registration ID; With the location registers device, be used for:, use this common point registration ID to carry out location registers when the portable terminal that is currently located at one of described a plurality of service areas receives a position register request.
Utilize above-mentioned configuration, described net control device will receive and analyze described control signal, and this control signal is converted to a common protocol, the polytype wireless system that this common protocol does not rely in the public network to be held.Because this net control device uses common protocol and functional entity to communicate to carry out network control and handles, so just hidden difference between the heterogeneous wireless system to functional entity.Therefore, the specification (or increase by an interface for each wireless system) that need not change each functional entity just can guarantee interconnecting of control signal.
Description of drawings
Read following detailed description in conjunction with the drawings, the present invention is above-mentioned will to become clearer with other purposes, feature and advantage, among the figure:
Fig. 1 is the schematic diagram according to the topology example of the network control system of the embodiment of the invention;
Fig. 2 is the block diagram of portable terminal used in the network control system shown in Figure 1;
Fig. 3 is the schematic diagram that is used to explain according to the operation of the network control system of the embodiment of the invention;
Fig. 4 is the sequence chart of operation performed in the network control system, and described operation is used for for portable terminal best route being set during radio communication;
Fig. 5 is the schematic diagram that inserts that intersects that is used to illustrate between current couple in router and the new couple in router;
Fig. 6 is the example of the AP-AR admin table of network controller;
Fig. 7 is for upgrading the sequence chart of the operation that the Route Selection cache tables carries out in network control system;
The sequence chart that the QoS that Fig. 8 carries out between a portable terminal and an access point when being the communication beginning consults;
Fig. 9 is the sequence chart of consulting as QoS that portable terminal is carried out between a portable terminal and a new access point when communication period moves to a different wireless system;
Figure 10 is the schematic diagram of the system configuration example of network control system according to another embodiment of the present invention, and this network control system also comprises a location registers manager and a user preference management database;
Figure 11 is the schematic diagram that is used to illustrate when portable terminal performed location registers when existing wireless local area network (WLAN) system moves to new WCDMA system;
Figure 12 is the sequence chart of the operation carried out network control system when existing wireless local area network (WLAN) system moves to new WCDMA system when portable terminal;
Figure 13 is the example of the table managed by the location registers manager;
Figure 14 is the example of the table managed by network controller;
Figure 15 is the sequence chart of the operation carried out network control system when new wireless local area network (WLAN) system moves to new WCDMA system when portable terminal;
Figure 16 is the schematic diagram that is used for illustrating the paging that has wireless local area network (WLAN) system now;
Figure 17 is the sequence chart of the paging in the existing wireless local area network (WLAN) system; With
Figure 18 is the example form of the data of being managed in the user preference management database.
Embodiment
Specify the present invention below in conjunction with accompanying drawing.
Fig. 1 shows the structure according to the network control system of the embodiment of the invention.This network control system comprises: portable terminal 10; Various types of wireless communication systems 20-50; With IP network 100, it is positioned as the upper strata on the wireless system.Portable terminal 10 is the mixed wireless communication terminals that can handle multiple wireless solution, and multiple wireless solution comprises such as the Wideband Code Division Multiple Access (WCDMA) (WCDMA) of IMT-2000 standard, insert (HSDPA), IEEE802.11 WLAN standard and IMT-2000 wireless solution of future generation etc. as the high-speed downlink packet of WCDMA extended version.It on IP network 100 application layer 200.
In the example depicted in fig. 1, WCDMA wireless system 20 comprises: by the access point (for example, the wireless base station) 21 and 22 that inserts from portable terminal 10, and the radio network controller (RNC) 23 that is used to manage and control radio resource.HSDPA wireless system 30 comprises: by the access point 31 and 32 that inserts from portable terminal 10, and have with the WCDMA wireless system in the RNC33 of identical function of used RNC23.Wireless local area network (WLAN) system 40 comprises by the access point 41-43 that inserts from portable terminal 10.Similarly, wireless system 50 of future generation comprises by the access point 51-53 that inserts from portable terminal 10.
Network control platform (NCPF) 120 control IP main lines 130.NCPF120 comprises: is used to carry out the Route Selection manager 121 of Route Selection control, is used to carry out the QoS manager 122 of QoS control, be used to carry out the security manager 123 of security control, and the session manager 124 that is used to carry out session control.In NCPF120, each among network controller 125 and the manager 121-124 communicates, and controls the operation of these managers.
Manager 121-124 is known as functional entity, and they are respectively to be used for the network equipment that route selection, QoS, safety and session are managed.Can add other functional entity to NCPF120 according to the increase of business or modification.Business support platform (SSPF) 110 is supported application controls.
Fig. 2 shows the structure of portable terminal shown in Figure 1 10.For the purpose of simplifying the description, portable terminal 10 shown in Figure 2 can communicate based on WCDMA and WLAN (wireless local area network).
CPU15 has radio resource management, and the radio resource information of the situation of the radio communication of collection expression and a plurality of access points, and this radio resource information is obtained via multi-band RF/IF transducer 12.Then, CPU15 determines the candidate access point of portable terminal 10 with the wireless system shifted to based on the information of collecting, so that the control handover.Radio resource information comprises: received power level, bit error rate, channel information and QoS information, these represent the signal receiving quality of the down link of each access point.Send to the current access point that portable terminal 10 is being communicated by letter with it via multi-band RF/IF transducer 12 handles about information by the definite candidate's access point of CPU15.Then, this information is transmitted to IP network 100.
Though in example shown in Figure 2, antenna 11 is and the mutually discrete assembly of network interface unit (NIC) that antenna also can be included among the NIC.In this case, the NIC antenna is carried out and separate antennas 11 identical functions.
Next, the basic operation of network control system is described with reference to Fig. 3.
In Fig. 3, portable terminal 10 is communicating with the access point that belongs to the heterogeneous wireless system (APa) 61 and access point (APb) 62 at present.With access point 61 and 62 communication period, portable terminal 10 collect expression from the information of the signal receiving quality of each access point 61 and 62 down link signals that send as radio resource information.Described portable terminal is determined candidate's access point that will insert in new position.For example, higher one of received signal power level can be selected as candidate's access point in access point (APa) 61 and the access point (APb) 62.
After definite candidate's access point, portable terminal 10 will comprise the network controller 125 that this control signal determining result's (indication candidate access point) and radio resource information sends to IP network 100.Network controller 125 extracts candidate's access point and radio resource information from this control signal, and according to the information and executing format conversion of a regulation rule to being extracted, so that be this information translation a kind of common format that does not rely on each wireless system.Be included in value in the information after the process format conversion of from described control signal, the extracting radio resource information of format conversion (for example, through) and further converted to another value according to described regulation rule.Network controller 125 is selected a suitable manager according to described the regulation among the regular manager from NCPF120 then, and the control signal after the described conversion is sent to selected manager.In this example, detect the necessity of Handoff Control in the information of network controller 125 from be included in described control signal.Therefore, network controller 125 selects Route Selection manager 121 to set up new route (comprising the distribution of the routing address corresponding with new route) for portable terminal 10 as the best management device.Then, Route Selection manager 121 sends to suitable router to routing information so that be that portable terminal 10 is set up best route in new position.
Depend on the target information that is included in the described control signal (for example access point address, couple in router address, with the information of the corresponding wireless qos parameter of required QoS rank, type of wireless system or expression wireless quality state), described regulation rule for example can comprise:
(1) is defined as an agreement (non-volatile);
(2) depend on local conditional, for example network configuration (physical configuration); Or
(3) for wanting controlled each user differently and according to the mode of The limited time (volatibility) to be set.
Fig. 4 shows the sequence of carrying out when having set up best route as the best management device and for the portable terminal 10 of communicating by letter with network control system when the Route Selection manager is selected in network control system.
The down link signal that portable terminal (MS) 10 is being monitored from each access point.When the received signal level from a certain access point surpassed a threshold value, described portable terminal was selected to be suitable for a wireless system of this access point as the candidate's wireless system (S11) in the reposition.Then, portable terminal 10 activates the broadcast message (S13) that (S12) sends from this candidate's access point with acquisition with the corresponding network interface unit of this candidate's wireless system (NIC).In this example, the NIC1 corresponding with WCDMA is activated.Mobile radio station 10 is determined the address (S14) of described candidate's access point according to the broadcast message that sends from described access point.Then, between portable terminal 10 and described candidate's access point, set up a Radio Link (S15).Portable terminal 10 is to the address (S16) of network controller 125 these candidate's access points of report.
The network controller 125 AP-AR admin table of the relation between each access point and the relevant couple in router of looing up the records, and determine between current couple in router and candidate access router, whether to exist and intersect access (S17).Insert if take place to intersect, then network controller 125 is to the address (S18) of the candidate access router of Route Selection manager report reposition.
Fig. 5 is the schematic diagram that inserts that intersects that is used to illustrate between current couple in router and described candidate access router.In Fig. 5, portable terminal is moving in the service area of access point (APc) 63 of wireless system B with current access point (APa) 61 communication period.Mobile terminal MS 10 monitoring are from the down link signal of APa61 and APc63 transmission.When the received power level from the signal of access point APc63 surpassed defined threshold, mobile terminal MS 10 was selected the candidate of this access point APc63 as the approaching new access point of portable terminal so.Mobile terminal MS 10 extracts the address of candidate's access point APc63 from received signal, and gives network controller 125 this address report by the current access point APa61 that is communicating by letter with relevant couple in router ARa141.After mobile terminal MS 10 receives the address of candidate's access point APc63, network controller 125 is consulted the AP-AR admin table.
Fig. 6 is the example of AP-AR admin table, this AP-AR admin table is each user record current access point (AP address) and relevant couple in router (AR address), and the wireless qos parameter corresponding with required QoS rank, type of wireless system and wireless quality state.
In this example, the user A of mobile terminal MS 10 is current just to communicate by letter with APa61, and user grouping is sent to upper layer node via ARa141.Therefore, the address of APa61 is registered as the AP address of user A in the AP-AR admin table.Similarly, the address of ARa63 is registered as the AR address of user A in the AP-AR admin table.
When network controller 125 received address from candidate's access point APc63 of mobile terminal MS 10, network controller 125 was searched for the corresponding AR address, address with access point APc63 in the AP-AR admin table.In this example, the AR address corresponding with access point APa63 is ARb142.From the AP-AR table as can be known, the current user grouping that is used to send from user X of couple in router ARb142.
After finding the address of candidate access router, whether network controller 125 is determined to exist between new couple in router ARb142 and current couple in router ARa141 and is intersected access.
There are two kinds of methods to be used for determining to intersect the generation that inserts.
First method is the definite corresponding a kind of method with handover between the heterogeneous wireless system, determines to intersect the generation that inserts based on the information of relevant type of wireless system.In example as shown in Figure 5, couple in router ARa141 and the ARb142 type of affiliated wireless system are respectively compared each other.If the type of these wireless systems differs from one another, then determine to intersect to insert to take place.
Second method is and definite corresponding a kind of method of handover between similar wireless system, determines the generation of intersection access for relatively coming between the prefix of each couple in router based on assignment.
Return Fig. 4, after determining that intersection inserts generation, give Route Selection manager 121 (S18) this address report of determining result and candidate's access point.Route Selection manager 121 sets up best route (S19) for portable terminal based on the address information of new couple in router.For example, by mobile anchor point (anchorpoint) dynamically to seek and to upgrade best route and carry out best route setting.In case set up best route, just the affirmation (ACK) of finishing of best route setting sent to network controller 125 (S20).
In this manner, occurring intersecting between current couple in router and the new couple in router when inserting when network controller 125 detects, the address report of the approaching new candidate's access point of portable terminal 10 to Route Selection manager 121.Route Selection manager 121 is carried out best route setting based on the address information of new access point.The process that best route is set comprises that the Route Selection cache tables to new couple in router ARb142 upgrades.
Fig. 7 is the sequence chart that is used to upgrade described Route Selection cache tables.After receiving from the address information of the new access point of network controller 125 (S18), Route Selection manager 121 sends to new couple in router ARb142 (S31) to an instruction that is used to upgrade described Route Selection cache tables.In couple in router ARb142, and the content of this Route Selection cache tables is upgraded (S32) by ARb142 to described Route Selection cache tables by high-speed cache (or interim storage).When this Route Selection cache tables had been updated, ARb142 reported to Route Selection manager 121 (S33) to finishing of table renewal.At last, the affirmation of this process being finished from Route Selection manager 121 sends to network controller 125 (S34).
Fig. 8 is the sequence chart of carrying out when QoS manager 122 is elected to be the best management device by network controller 125.In this case, between portable terminal and access point, carried out the QoS negotiation.In example as shown in Figure 8, carry out QoS at first in communication and consult.In Fig. 8, symbol M S represents portable terminal 10, and AP represents access point, and AR represents couple in router.
When mobile terminal MS 10 beginning radio communications, for a business-level is determined in the application of each hope.In order guaranteeing and selected business-level corresponding service quality, between mobile terminal MS 10 and access point AP, to carry out QoS and consult (S41).In order to consult, the information translation of each selected business-level of using of expression is become the QoS rank.Therefore, in consulting, QoS used the QoS class information.
When QoS consulted to finish, mobile terminal MS 10 reported to the QoS rank network controller 125 (S42) of IP network 100.
After the QoS class information that receives from portable terminal S10, network controller 125 need to determine whether QoS control (S43) based on the precedence information that is included in this QoS class information.When the QoS rank that receives a lower priority ((Best-Effort) type QoS for example does one's best), network controller 125 do not need to determine QoS control (choosing is not among the S43), and does not have QoS control to be sent to QoS manager 122 with instructing.On the other hand, when the QoS rank that receives a higher priority (for example bandwidth is guaranteed (Bandwidth Guarantee)), network controller 125 need to determine QoS control (choosing is among the S43), and the QoS rank that receives is reported to QoS manager 122 (S44).QoS manager 122 is converted to a qos parameter to the QoS rank that receives from network controller 125, and based on this qos parameter couple in router AR is carried out QoS control (S45).Then, QoS manager 122 is controlled the affirmation of finishing (ACK) to QoS and is sent to network controller 125 (S46).
Not only carry out QoS at first and consult, consult but also carry out QoS in communication period in communication.
Fig. 9 is the sequence chart that the QoS that carries out between portable terminal 10 and access point of communication period consults.In the example depicted in fig. 9, suppose that network controller 125 begins all to keep the QoS rank to end from communication, and have AP-AR admin table shown in Figure 6.In Fig. 9, symbol M S represents portable terminal 10, and APa represents access point to APc, and AR represents couple in router.
When the received power level of the signal that sends from a certain access point (AP) surpasses threshold value, mobile terminal MS 10 selects this access point as candidate's access point (S51), and the address (S52) that set network controller 125 is reported these candidate's access points on IP network 100.
From near access point APa, APb and APc receive the information of relevant idle wireless channel after (S55), network controller 125 selects one to be suitable for this other access point of QoS level (S56) based on this received channel information, and gives mobile terminal MS 10 (S57) address report of selected access point.
Mobile terminal MS 10 and appointment access point begin QoS and consult (S58), and report finish (S59) of QoS negotiation when QoS consults to finish to network controller 125.Then, communicate by letter (S60) of mobile terminal MS 10 beginning and this access point.
According to the embodiment shown in Fig. 8 and 9, network controller 125 selects the access point of a QoS who is suitable for previous demand so that suitably control the QoS manager.Therefore, Quality of Service is correctly being joined between transfer period between system.
For the foregoing description, the control signal that sends from portable terminal 10 is analyzed and convert a kind of common format that does not rely on wireless system to.In this embodiment, described control signal comprises the radio resource information such as QoS information or switching information needed.Use gives a suitable functional entity (that is suitable manager that is arranged on the NCPF) described control signal assignment based on an agreement of this common format (it is called as " public control format ").In other words, network controller 125 contains the difference of communication protocol, application, data format, data representation and attribute aspect, and fills the post of coordinator or the intermediary that is used for integrated a plurality of heterogeneous systems.Therefore, a plurality of functional entitys on the NCPF120 have been hidden the difference in the wireless system.
Utilize this configuration, a new wireless system can be contained in the public IP network, and do not change the specification of each functional entity or increase interface about each wireless system.Owing to can guarantee the compatibility of the control signal among the heterogeneous wireless system, so can realize rational network management.
In addition, improved network control performance or wireless access technology after the different wireless systems even in network, hold, also can to other functional entitys and wireless system hides because the influence that this improvement caused.
In this embodiment, Route Selection manager 121 is filled the post of mobile controlled entity.Yet the location manager that is used for the positional information of managing mobile terminal 10 can combine with Route Selection manager 121 and realize this mobile controlled entity.Location management is a kind of like this function: grasp the positional information that is not in the portable terminal of communications status on the network, call out this portable terminal based on this positional information, and this portable terminal is returned to communications status.
In order to realize this, network controller 125 is furnished with a table, and this table is used for when the paging request occurs a paging request being converted to an address of paging corresponding with each wireless system.When network controller 125 received paging request to current portable terminal of visiting wireless system A, it was consulted described conversion table and this paging request is converted to the paging form that is used for wireless system A.Then, network controller 125 sends to described location manager to this paging form.This location manager sends a paging signal to the access point of portable terminal present located wireless system A.
By being mobile control combination Route Selection management and location management, just carried out the management of customer position information and routing optimization with reasonable manner.
In the above-described embodiments, Route Selection manager 121 and the QoS manager 122 on the network controller 125 control NCPF120.Yet the present invention also is applicable to the control to security manager 123 and session manager 124.In addition, those managers that on the NCPF120 in Fig. 1, illustrate, the present invention also is applicable to the control of any manager, and described any manager for example has: authentication manager, accounting management device, link establishment manager, maintenance/Monitoring Manager, professional control manager, network control manager or location registers manager.In addition, user preference management database or upper layer application also can be controlled by described network controller.The following describes the example that network control of the present invention is applied to location registers manager and user preference management database.
Figure 10 shows the overall structure according to the network control system of second embodiment of the invention, in this network control system, has incorporated a location registers manager and a user preference management database into.The assembly identical with assembly shown in Figure 1 represented by identical symbol or label.Network control system comprises existing WCDMA system 20
1, existing HSDPA system 30
1, the WCDMA system 20 that increases newly
2With the existing HSDPA system 30 that increases newly
2Location registers manager 126 and user preference management database 127 are set on the NCPF120 of IP network 100.
Location registers manager 126 has the function that a common point registration ID who uses in each wireless system manages the location registers of user's (moving) terminal 10 concentratedly.Location registers manager 126 also has the function of the location registers management function of deleting the wireless system that increases newly.This system that increases newly comprises the wireless system of just being set up recently or will developing in the future.The location registers management function of this new system for example is the function of radio network controller (RNC) used in the WCDMA wireless system.
127 storages of user preference management database and the user's subscription information of managing mobile terminal 10 and the wireless solution of agreement.
By use location enrolment authority 126 and user preference management database 127, network controller 125 has been realized the location registers on the IP network 100 for portable terminal 10 and has been managed.
Figure 11 is the schematic diagram that is used to illustrate the location registration that is realized when portable terminal when existing wireless local area network (WLAN) system moves to the WCDMA system that increases newly.Thick line is represented the signal flow of position register request.
Wireless range (or sub-district) to each the access point AP44-46 that has wireless local area network (WLAN) system now provides a location registers ID.In the figure, each in AP44-46 provides location registers ID=α.Similarly, provide a location registers ID to each access point (corresponding) wireless zone that AP27-29 limited with the wireless base station by the WCDMA system that increases newly.In this example, each in AP27-29 provides position ID=1.In wireless local area network (WLAN) system and the WCDMA system each all comprises a radio network controller (RNC), and this radio network controller is filled the post of location registers manager and radio resource manager (RRM).Radio network controller (RNC) is called as control station in this example.
As shown in figure 11, overlap each other by the formed wireless zone of access point AP46 of existing wireless local area network (WLAN) system with by the formed wireless zone of access point AP27 of new WCDMA system.If portable terminal 10 is arranged in this overlapping region, then by switching between radio communication system, portable terminal 10 can be communicated by letter with the access point AP26 of wireless local area network (WLAN) system and the access point AP27 of WCDMA system.Radio communication system is switched by the CPU15 of portable terminal 10, portable terminal 10 obtains necessary wireless parameter from wireless lan network interface card (NIC) 17 or WCDMA network interface unit (NIC) 18, and is that RF, modulation scheme and base band signal process suitably are provided with parameter.
Figure 12 is the sequence chart according to the location registration of second embodiment of the invention, when portable terminal 10 carries out this process when existing wireless local area network (WLAN) system moves to new WCDMA system.
When portable terminal 10 beginnings were communicated by letter with existing wireless local area network (WLAN) system, the NIC17 of portable terminal 10 produced a position register request and this request is offered CPU15 (S101).After receiving this position register request, CPU15 is the state recording in memory (S102) of portable terminal 10 with respect to the location registers of existing wireless local area network (WLAN) system, and via the control station 47 of existing wireless local area network (WLAN) system this position register request sent to network controller 125 (S103).Network controller 125 extracts the peculiar location registers ID of this wireless local area network (WLAN) system from the position register request that is received from the control station 47 that has wireless local area network (WLAN) system now, and this distinctive location registers ID is converted to the common point registration ID (S104) that is managed by location registers manager 126.
Location registers manager 126 has and manages admin table shown in Figure 13, in this admin table, for each wireless communication system has write down a common point registration ID who does not rely on radio communication system.Network controller 125 has and manages another admin table shown in Figure 14, in this management, has stored the common point registration ID that is associated with peculiar each the location registers ID of each radio communication system.
If existing wireless local area network (WLAN) system uses radio communication system A, network controller 125 just is converted to public location registers ID=1 to location registers ID=α so.After dislocation registration, network controller 125 chosen position enrolment authority 126 (S104), and described position register request sent to location registers manager 126 (S105).
Based on the position register request that sends from network controller 125, location registers manager 126 realizes being used for the location registers (S106) of portable terminal 10, and via network controller 125 confirm (ACK) send to portable terminal 10 (S107, S108).Portable terminal 10 receives this ACK.
When portable terminal 10 when the service area of wireless local area network (WLAN) system moves to the service area of WCDMA system, CPU15 detects this and enters (S109), and provides an activation command (S110) to WCDMA network interface unit 18.In response to described activation command, WCDMA network interface unit 18 produces a position register request that is used to start the communication of adopting the WCDMA pattern, and this position register request is outputed to CPU15 (S111).After receiving this position register request, the information of the location registers state that CPU15 consults in the memory to be write down is to confirm whether location registers is finished.In this example, described location registers has just been finished when portable terminal begins to communicate by letter with existing wireless local area network (WLAN) system.Therefore, CPU15 does not send to IP network to the position register request that receives recently, but stops this position register request (S112).Then, CPU15 returns to WCDMA network interface unit 18 (S113) with a pseudo-affirmation ACK.
In a second embodiment, network controller 125 the peculiar location registers ID of a wireless communication system is converted to the dissimilar wireless communication systems that are contained in the network shared common point registration ID.Owing to be corresponding between management common point registration ID and each wireless system location registers ID in network, so even under the heterogeneous wireless communication environment, when the switching wireless solution, portable terminal also needn't carry out location registers.Because portable terminal needn't send new position register request for new wireless communication system, so reduced power consumption of mobile terminals during the wireless system handoff procedure.
Figure 15 is the sequence chart that is illustrated in another example of the location registers under the heterogeneous wireless communication environment.In Figure 15, the access point AP1 of wireless local area network (WLAN) system is broadcasting one common point registration ID (ID=1) constantly, and portable terminal 10 receives this broadcast singal (S201) then.Similarly, the access point AP of WCDMA system constantly broadcasts common point registration ID (ID=1).In other words, common point registration ID (ID=1) distributes to the sub-district of the access point AP of the sub-district of access point AP1 of wireless local area network (WLAN) system and WCDMA system with being shared.
In this case, the portable terminal 10 that is currently located in the AP1 sub-district of wireless local area network (WLAN) system will send a position register request.Network controller 125 receives this position register request and this position register request is offered location registers manager 126 (S202).Location registers manager 126 is portable terminal 10 executing location registrations (S203).
When portable terminal 10 moves to AP regional of WCDMA system from the zone of the AP1 of wireless local area network (WLAN) system, the CPU15 that WCDMA network interface unit 18 is moved terminal 10 activates, and WCDMA network interface unit 18 begins to monitor the broadcast singal that sends from the AP of WCDMA system, and this broadcast singal comprises common point registration ID (S204).In the legacy system of the different location registers ID of each wireless communication system broadcasting, when portable terminal received the new location registers ID of the wireless communication system of making a fresh start, this portable terminal just must send a position register request.On the contrary, for present embodiment, a common point is registered the sub-district that ID distributes to the different wireless communication system, therefore, in case finished the location registers of registering ID (ID=1) about common point, then portable terminal 10 just needn't send position register request again.Adopt this mode, the sub-district that a common point registration ID is distributed to dissimilar wireless systems can prevent repeatable position registration process when switching wireless solution.Thereby, reduced the power consumption of portable terminal 10.
In addition, location registers manager 126 is that dissimilar wireless systems is controlled the also location registers of managing user terminal with a kind of centralized system.When a new wireless communication system was merged in the network, the control station of the wireless communication system that this increases newly (or relay station) needn't have the location registers management function.Like this, can reduce the cost of control station.
This advantage can also be applied to already present wireless system in the network.For example, when registered completing place among the S106 at Figure 12, network controller 125 can send an instruction that is used for delete position registration management function to the control station (or relay station) of existing wireless local area network (WLAN) system.Described control station is in response to from this instruction of network controller 125 and delete position registration management program.Alternatively, when the control station of wireless communication system received the confirmation, it can come delete position registration management function itself.
Next the paging of carrying out in a second embodiment is described.Figure 16 is used for illustrating that paging is positioned at the schematic diagram of the paging of the portable terminal that has wireless local area network (WLAN) system now.In Figure 16, the assembly identical with assembly shown in Figure 11 represented by identical symbol or label.Thick line is represented paging signal stream.
Figure 17 is the sequence chart of paging.When network controller 125 receives paging signal from location registers manager 126 (S120), whether it consults user preference management database 127 (S121) can communicate (S121) with existing wireless communication system or new wireless communication system with the portable terminal determining to want paged 10.Figure 18 shows an example of user preference management database 127.User preference management database 127 is stored the existence in wireless solutions, the relevant peculiar location registers of wireless solution zone or is not had, is used for user's subscription information of every kind of wireless solution and the user preference information of the preferential wireless solution that expression is used.
After dislocation registration ID, network controller 125 is given the control station 47 (S123) that has wireless local area network (WLAN) system now the paging signal assignment that comprises location registers ID=α, and this paging signal is sent to this control station 47 (S124).After this, send a paging signal (S125) from portable terminal 10 residing access point AP to portable terminal 10.After receiving this paging signal, portable terminal 10 returns to location registers manager 126 (S126) to affirmation ACK via network controller 125.
If in the overlapping region of portable terminal 10 between wireless solution A and wireless solution B, the wireless solution of determining to carry out paging then based on the set user preference of the user of portable terminal 10.For example, the highlyest carrying out paging with the wireless solution of frequency if the user is configured such that preference with having, then basis is carried out paging in the order with frequency.This configuration will be illustrated below in more detail.
If in the area that the wireless zone that portable terminal is currently located at wireless solution A and wireless solution B overlaps each other, and this portable terminal is had a calling, and then network controller 125 is consulted the user preference information that is stored in the user preference management database 127.Network controller 125 is chosen in a wireless solution with limit priority of usefulness, and it is at first carried out paging.In example shown in Figure 180, for wireless solution A be provided with than wireless solution B higher using priority, correspondingly, at first carry out paging to wireless solution A.Owing in described table, defined paging order, thus paging when having avoided to a plurality of wireless solution, and used radio resource effectively.
In this manner, when when being currently located at portable terminal 10 in the zone that is covered by a plurality of heterogeneous wireless schemes and calling out, network controller 125 is consulted user preference management database 127, and the wireless solution with limit priority (or preference) of Xiang Zaiyong sends described paging signal, and does not worsen the operation convenience of portable terminal 10.
In the above-described embodiments, a location registers ID has been converted to common point registration ID, this common point registration ID is common for a plurality of sub-districts that a plurality of access point AP by a plurality of heterogeneous wireless system are controlled.Yet the present invention is not limited to this example.Location registers ID can be converted into common point registration ID, and this common point registration ID is common to a unit registration zone of being made up of a plurality of sub-districts.
In described embodiment, portable terminal 10 is equipped with a plurality of network interface unit (NIC), the out of Memory of communication protocol of each network interface unit storage and one of them wireless communication system, and realize and the communicating by letter of dissimilar communication protocol by switching NIC.Yet the present invention is not limited to this example.For example, can be from an external server download network interface software.In this case, the software of describing a proper protocol that is suitable for this situation is downloaded to portable terminal 10 automatically, and the user needn't carry a plurality of network interface unit.Therefore, the operability and the operation convenience of portable terminal 10 have further been improved.
The coordination of network controller 125 (or intermediary) function has realized signal transmission, protocol conversion apparatus, entity communication control unit, entity selection device, format conversion apparatus, value of information conversion equipment, signal assignment device, location registers ID management devices, location registers ID conversion equipment, broadcaster, location registers device and paging signal assignment device.
The combination of network controller 125 and location registers manager 126 has realized Location Registration Function.Portable terminal 10 has a radio resource information collection/function of reporting.The CPU15 of portable terminal 10 fills the post of location registers condition managing device.Radio network controller (RNC) is filled the post of control station.
Utilize the present invention, analyze by regulation network node (that is, the network controller in described embodiment) from the control signal that portable terminal sends, and be converted into a kind of common format of the wireless solution that does not rely on the heterogeneous wireless system.Network node uses this common format to communicate by letter with the various functional entitys of realizing network control.Therefore, hidden difference in the heterogeneous wireless system.Under the heterogeneous wireless environment, guarantee to use the interconnecting property of described control signal, and the functional entity of each wireless system has not been increased special purpose interface.In a word, adopt reasonable manner to realize network management.
By utilizing a common point registration ID to come the control position registration, even in the heterogeneous wireless environment, also reduced power consumption of mobile terminals, and on network, location registers has been managed according to uniform way.
Present patent application is based on following patent application: the Japanese patent application No.2003-47762 of application on February 25th, 2003, Japanese patent application No.2003-179814 with application on June 24th, 2003, and require the rights and interests of date of application early of the two, the full content of these two applications all is incorporated into this to do reference.
Claims (2)
1, a kind of portable terminal that is connected with network and can communicates with the polytype wireless system, each wireless system has a WAP (wireless access point), and this portable terminal comprises:
Receiving system, it is used for receiving a down link signal from the described WAP (wireless access point) of any one described wireless system; With
The radio resource information annunciator, it is used for the information of the wireless quality of the down link signal of relevant this WAP (wireless access point) is reported to a defining node on the network as radio resource information.
2, portable terminal according to claim 13, this portable terminal also comprises:
Location registers condition managing device, it is used to manage the information of handling about whether executed location registers; With
Position register request stops device, and it is used for terminating as a position register request that wireless system produced of its motion of portable terminal forward in described a plurality of wireless system when executing location registration process.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP047762/2003 | 2003-02-25 | ||
| JP2003047762 | 2003-02-25 | ||
| JP179814/2003 | 2003-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100060390A Division CN1306763C (en) | 2003-02-25 | 2004-02-25 | System and method for controlling network, network controlling apparatus, and mobile terminal |
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| CN1983874A true CN1983874A (en) | 2007-06-20 |
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| CN 200710008201 Pending CN1983874A (en) | 2003-02-25 | 2004-02-25 | System and method for controlling network, network controlling apparatus, and mobile terminal |
| CNA200710004400XA Pending CN1992984A (en) | 2003-02-25 | 2004-02-25 | System and method for controlling network, network controlling apparatus, and mobile terminal |
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| CN108632307B (en) * | 2017-03-17 | 2020-06-26 | 电信科学技术研究院 | Session connection establishing method and SMF entity |
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