CN201004628Y - Multi-mode wireless transmission/receiving unit and wireless LAN base station - Google Patents

Abstract

The utility model includes a mobile control device for the different wireless techniques, which is realized according to the setting parameters of the place and the network policy, discovered via effective implementation of the exchanging network, in the mode of making the mobile station choose the most necessary candidate wireless accessing techniques.

Description

Multi-mode wireless transmission/receiving element and WLAN base station

Technical field

The utility model is relevant for wireless telecommunications, and more particularly, the utility model is relevant for finding and select can obtaining more than the network in the geographic area of one cellular and/or IEEE 802 wireless telecommunication systems.

Background of invention

In known technology, wired and wireless telecommunication system has been known category, and in recent years, but the broad development of the network of different kenels then is to have caused to obtain the geographic area of access more than a kind of network of kenel, and, communication device has also developed two, or the more network access technique is integrated among single the network equipment, for example, had that integrated can be via more than a kind of wireless standard (for example, the IEEE 802.X of compliant wireless local area networks network (WLAN) standard, and cellular technology, for example, code division multiple access (CodeDivision Multiple Access, CDMA), global system for mobile communications (Global System for Mobilecommunications, GSM), and integration package radio system (General Packet Radio System, GPRS) standard) carry out the communication device of the ability of communication, wherein, communication system via each standard is referred to as a kind of communication mode, and, can via the device that carries out communication more than a kind of communication standard then claimed for multi-mode device (multi mode devices).

Yet, support with two or the multiple network access technique be integrated in an existing system among the device and but be not provided at reciprocation (interworking) between the different access techniques, which kind of in addition, one support the communication device of multi-mode function also can further not provide to be accessible ability for setting position access technique or also not provide in order to assessment in the validity of these effective different access techniques in setting position place and in order to select the best can utilize the ability of technology in order to decision.

In a known method; one multimode phone can be opened the multiple radio modulator-demodulator; and scan each wireless access technology is effective network, frequency and cell element; yet; having this two or multiple radio and modulator-demodulator that scans function of execution but is to consume quite a large amount of power and system resource; and the method also can't be found the effective service on each active block and then select preferable network.

Therefore, be the needs that have in a plurality of effective networks, are not subject to the assessment of known technology ground and select a preferable network.

Summary of the invention

The purpose of this utility model provides a kind of device that comprises the mobility control that helps leap different radio technology, and it is the parameter of setting according to as demand for services, effectively service, position and policy, and by finding that effectively to a wireless transmission/receive unit (WTRU) be effective network, decision is effective service on those networks, and selects the mode of optimal effective radio access technology and reached.

The purpose of this utility model provides a kind of multi-mode wireless transmission unit (WTRU), itself and a cellular network communication, can receive and handle information about in its vicinity at least one WLAN, can determine a plurality of may communications in conjunction with in which respectively be preferable combination, and can set up preferable communication combination, this multi-mode wireless transmission unit comprises cellular network transceiver, WLAN transceiver and media independent handover device.WLAN (WLAN) scanning can be closed in this multi-mode wireless transmission unit when the user has been connected to a cellular network, therefore and preserve the WTRU battery electric power, improving a large amount of power of consumption in the known technology and the shortcoming of system resource, under the situation of the efficient that the wlan system that do not need to compromise is found, extend in the battery electric power among this WTRU.

Another purpose of the present utility model provides a kind of WLAN base station, comprises media independent handover device and transceiver.Wherein said media independent handover device provides the media independent handover information about LAN, and the communication that described transceiver is used to set up with a cellular network combines, and this media independent handover information is sent to this cellular network.

Description of drawings

Can be from next being obtained to the more detailed understanding of the utility model by narration that example carried out, and can be by accompanying drawing as related and understand, wherein:

Fig. 1: it is an accompanying drawing that shows the wireless transmission/receive unit (WTRU) of position in a geographic area that both are served by a WLAN and a cellular network;

Fig. 2: it is a calcspar that shows a bimodulus WTRU;

Fig. 3: it is to show when 3GPP BS to a WLAN BS handing-over of the conversational communication between a bimodulus WTRU and a communication node (CoN);

Fig. 4: it is the signal transmission accompanying drawing that shows by the initial/system discovery that WTRU controlled of network institute;

Fig. 5: its be show a kind of in order to find to integrate and across a flow chart of other service method of a plurality of effective wireless access technologies;

Fig. 5 A: it is the signal transmission accompanying drawing in order to a display system discovery and a bimodulus WTRU access;

Fig. 6: its for show a kind of when system discovery is failed the flow chart of employed signaling method;

Fig. 7 A and Fig. 7 B: its for show a kind of when system authentication is failed the flow chart of employed signaling method; And

Fig. 8 A and Fig. 8 B: it is to send accompanying drawing in order to a signal that shows 802.x and 3GPP system with interaction access failure.

Embodiment

The utility model will be narrated as reference with accompanying drawing, and wherein, in the text, same numeral is the identical assembly of representative.

When in after when mentioning, this proper noun " wireless transmission/receive unit (WTRU) " promptly includes, but are not limited to, one user's equipment (UE), mobile platform (MS), fixing or moving user unit, calling set, or any other kenel device that can in a wireless environment, operate.As for this proper noun " base station (BS) " in after when mentioning, promptly include, but not limited to a base station, Node B (Node-B), positioner, access point (AP), or in a wireless environment interface arrangement of any other kenel.

The utility model comprises a kind of device and method of assisting in the mobility of crossing over the different radio technology is controlled, it is to find by the highly-efficient implementation network, decision is effective service in the network of being found, and assist a WTRU in a plurality of effective wireless access technologies, to select a preferable radio access, foundation is as service request, effectively service, position, and the parameter of network policy setting.

The utility model makes a multi-mode WTRU, for example, support the bimodulus WTRU of a cellular network and a WLAN (WLAN) simultaneously for a moment, can close WLAN when the user has been connected to a cellular network scans, therefore and preserve the WTRU battery electric power, at this, this cellular network is to indicate this bimodulus WTRU when understanding near a WLAN is in it, and, can indicate it should begin scanning of this WLAN, in a preferred embodiment of the present utility model, this cellular network is the geographical position that can be appreciated that these WLANss of position in its coverage scope, and, this cellular network also can be followed the trail of the position of this WTRU, wherein, method in order to the position that determines this WTRU has of all kinds, for example, triangulation, universal geographical area is described (UniversalGeographical Area Descriptions), or with the method for global positioning system (GPS) as assistance, then, with this cellular network discovering for the position of the position of these WLANs and this WTRU as the basis, this cellular network just can determine whether have a WLAN in the near zone of this WTRU, in the time of if yes, this cellular network will send to the signal that this WTRU has a WLAN in its vicinity in the zone, then, this WTRU can begin the WLAN discovery procedure, and in a preferred embodiment, this cellular network is can be a 3GPP network, and this WLAN can be an IEEE 802.X wireless network.Because the method can't scan a WLAN, unless it is to be subjected to the indication of this cellular network and to be engaged in so behavior, therefore, the method is the battery electric power that can extend under the situation of the efficient that the wlan system that do not need to compromise is found among this WTRU.

Fig. 1 has shown a bimodulus WTRU 150 that can carry out communication between the two at a WLAN and a 3GPP network, and WTRU 150 has just moved among the WLAN coverage 110.The WLAN Communications service is provided at by WLAN BS 120 among the scope of WLAN coverage 110, this WLAN coverage 110 is surrounded by 130 of 3GPP cell elements, and the 3GPP Communications service is provided among the scope of cell element 130 by 3GPP BS 140.At the beginning, WTRU 150 is via the conducting communication with the wireless connections of 3GPP BS 140, and according to the utility model, in the time of among WTRU 150 moves into this WTRU coverage 110, WTRU150 can become to recognize that an effective WLAN is arranged, as meeting in after discussed, that is, WTRU 150 can find which the service that can obtain via WLAN BS 120 has, then, WTRU 150 can determine whether it should be handover to WLAN BS 120 from 3GPP BS 140 with its communication, if it will initially should join.

Fig. 2 is the calcspar of this bimodulus WTRU 150.WTRU 150 comprises a 3GPP member 240, and it can utilize the 3GPP communication standard and carry out communication with 3GPP BS 140; One WLAN member 220, it can utilize the WLAN communication standard and carry out communication with WLAN BS 120; And the handing-over of a media independent handover (mediaindependent handover-handover, MIHHO) member 230, it is correlated with and is connected in a MIH function, this MIH function then is to make the discovery of active block become easier, can decision which in a plurality of active blocks be preferable network, and can make that the handing-over to another becomes easier from a network.

Fig. 3 in order to be presented at a bimodulus WTRU150 and a communication node (correspondent node, CoN) carry out one of between 300 in the icon of conversational communication.At the beginning, this conversational communication is the in addition conducting via the 3GPP member 240 in WTRU 150 and 3GPP BS 140, as for extra network structure (not shown) then be typically can the position between 3GPP BS 140 and CoN 300.Potential alternative communication path system between WTRU 150 and CoN 300 is shown as dotted line, comprises WLAN BS 120, as for extra network structure (not shown) then be typically can the position between WLAN BS 120 and CoN 300.Among a preferred embodiment, this 3GPP network is the database that can maintain the position of the overlapping WLANs in coverage, and, can follow the trail of the position of WTRU 150, WLAN member 220 in WTRU 150 then is to maintain closed condition, WTRU 150 has a WLAN to occur in its vicinity up to this 3GPP network indication, then, by position of comparing WTRU 150 and the Last Known Location of WLANs, when will having a WLAN in the near zone of WTRU 150, this 3GPP network makes decision, then, this 3GPP network can send information about this effective WLAN to WTRU 150, and this information then is can be with the form of a proprietary information, the form of a beacon frame, or similar form and being sent, whether moreover WTRU 150 can read this system information, and can determine to have and need be handover to this WLAN, if answer is to be, then WTRU 150 will initial handover procedure.

Information system in order to the position that determines this WTRU 150 can comprise derived from triangulation, universal geographical area is described (Universal Geographical Area Descriptions), with the method for GPS as assistance, and the information of similar approach, in addition, this 3GPP system can be for the Path selection zone of supporting WLAN, the band of position, or a special interim mobile platform designator (Temporary MobileStation Identifier is distributed in the coverage, TMSI), perhaps, be alternatively, this WTRU can use wireless frequency (RF) feature (signature), or fingerprint decides the availability of a wlan system, and in this case, this WTRU one of can set up in being placed on this cellular network scope this a GPP wireless frequency channels feature of a channel at privileged site place and a based WLAN that is covered by this 3GPP RF channel coverage, for example, one WLAN, between one the relation, this relation is when this WTRU detects existing of this RF feature, be used to existence to this this wlan network of WTRU flag, and this information is among the database that can be maintained in this WTRU scope, and can dynamically upgrade this relation and whether should do correction.

Now, please point to Fig. 4, the progress system of one conversational communication 40 is presented between a bimodulus WTRU 150 and the communication node (CoN) 300, user's data flow (User data flow) be see through this comprise a 3GPP radio access network (radio acces s network, RAN) and the 3GPP network 44 of a core network (CN) and between this WTRU 150 and this CXoN 300, carrying out.In step 1, this 3GPP network 44 can send the information that meets effective IEEE 802.x of WLAN 46 that is relevant to, comprise a medium access point (MA) and an access gateway (AG), this WTRU 150 in this WTRU 150, this 3GPP member 240 then is to read this wlan system information, and can determine its content whether can be used for system to this wlan system 46 to reselect.In step 2, this 3GPP member 240 in this WTRU 150 is to capture the system information that can whether can be authorized to be relevant to WLAN 46 with the handing-over that decides an arrival one wlan system 46, then, this information can be delivered to this MIHHO member 230 among WTRU 150 forward, wherein, this WLAN46 system information can comprise that this WTRU 150 need be with the information that decides a handing-over that arrives this WLAN 46 whether can be authorized to, and, WTRU 150 can be delivered to its MIHHO member 230 forward with this information, then, this WTRU150 can scan this WLAN 46 in its vicinity, perhaps, be alternatively, as the dotted line in step 2 shown, this WLAN member 220 among WTRU 150 also can execution cycle property scan, continuously, or in the time of the promotion of the system information that be subjected to being received from this 3GPP member 240.

In step 3, acquisition can be delivered to this MIHHO member 230 forward with the form of an information from relevant wlan system 46 information of the information that this 3GPP system 44 sent, at this, be denoted as a LINK SYSTEMINFORMATION information, perhaps, alternatively, as the dotted line in step 3 shown, the information that this WTRU 150 is obtained during periodically scanning can be delivered to this MIHHO member 230 forward with the form of an information, at this, be denoted as a LINK DETECTED information.If when but a WLAN is access, then this WTRU 150 will detect these WLAN 46 beacon frames, these beacon frames can be used to identification and join distinctive information, for example, whether support whole, or the media independent handover service of part (for example, broadcast indicated person as peculiar 802.21 flags that see through on this beacon frame, or the fellow is the same), in addition, beacon frame can also be used to indication effectively other service on this WLAN 46, and, this joins distinctive information can be manually, or dynamically upgrade, perhaps, as an alternative, this WTRU 150 can see through a probe requirement/response message to (Probe Request/Response message pair), or attempt to obtain WLAN 46 system informations by being accessed in the database in this candidate system.

In step 4, this MIHHO member 230 among this WTRU 150 is can be based on effective information (for example, detailed indication, the RF feature, the geographical position, manually or automatically scan, special TMSI distributes, or fellow) and the decision may be suitable for reselecting one, or several wlan networks, in step 5, this MIHHO member 230 can estimation be used to join the potential candidate's that selects tabulation, in step 6,230 of this MIHHO members are can be with various criterions, for example, system's operator, and known wlan system 46 abilities, for example, service quality (QoS), data transmission bauds, and the fellow, assess the preferable candidate that these MIHHO member 230 meeting decisions are used to join as the basis, and, can trigger the wlan system access to this medium access control (MAC) layer by sending a signal (, being denoted as a MIH_SWITCH information), and then require the action relevant with handing-over at this.

Fig. 5 is that wherein, this MIHHO member 230 in this WTRU 150 is receiving system information via the WLAN beacon in order to a flow chart of the discovery that shows other service of integrating and cross over a plurality of effective radio access technology.WTRU 150 can carry out these and scan program, to find wlan network, step 510, wherein, scanning can be initiatively, or it is passive, and the found WLAN more than can be arranged, then, when the WLAN beacon frame is subjected to detecting, whether WTRU 150 can decision support MIH handing-over information, step 520, if words, WTRU 150 will read its content, step 530, and the distinctive information of MI H promptly can be set by a MIH function that belongs to this WLAN access network (AN) and be upgraded, manually, or dynamically, and, any MIH information of being found in a beacon frame (for example, system's operator identity, W-APN, neighbor map, and System Privileges) all can see through an information (at this, be denoted as a LINK SYSTEM INFORMATION information) and be delivered to the MIHHO member 230 of this WTRU, step 540, then, this information is to handle, and WTRU 150 one is suitable for the candidate of system access, step 550, then, this MIH function can be assessed this WLAN and other valid memory access network (ANs), and determine that it is this preferable AN, step 560, then, this MIH function meeting triggering authentication, and see through one arrive this MAC layer MIH_SWITCH information and with this preferable AN produce connection (that is, the WLAN of this discovery), step 570, moreover, distinctive authentication of WLAN and connection program can be carried out on this selected wlan system, step 580, wherein, authentication system can be via EAPOL (Extensible Authentication Protocol over LAN, see through the Extensible Authentication Protocol of LAN), what should note then is that except this WTRU scans the WLAN when being subjected to the promotion of a 3GPP network, this WTRU also can scan when activating.

During the WLAN authentication, WTRU 150 can offer this WLAN with a network access ID (NAI), then, with this NAI as the basis, one access gateway (AG) just can trigger EAP-AKA (ExtensibleAuthentication Protocol-Authentication and Key Agreement, Extensible Authentication Protocol and authentication and golden key agreement) authentication, and divide journey to transmit authentication information to 3GPP AAA (Authentication, Authorization, and Accounting, authentication, authorize and charging) server, wherein, this AG can also be sent to AAA information route other server, so that service to be provided, this AG can use this NAI to decide WTRU 150 whether to need the service of a special level, for example, basic, or high-grade service, this NAI can also be used to the information route is sent to can provide the special port of special good fortune (ports), for example, this special user or the effective network capabilities of user's classification.

This AG can also trigger the NAI of this authentication procedure based on this, or based on this authentication procedure itself and determine the level of the needed service of this WTRU, and, even the authentication procedure to a high-grade good fortune thing level has been failed, this AG can determine that still this WTRU can receive basic service, if and this AG is when can't route transmitting this authentication requesting, then it just can respond this WTRU by indication one authentication requesting can carry out effective aaa server of route transmission, if without any one when suitable, then it just can determine to get back to the stage that scans in them in this WTRU decision.

This AG (for example can get permission the basic service of access, Internet service) or access one can provide WTRU150 the further entry network site of information (portal), in addition, this AG can also select to provide a default value PDG (Packet Data Gateway, sealed packet data gateway) address, if words, then this WTRU just can determine to be connected to this default value PDG, at this, this program can be for automatically, or can be with the configuration parameters among this AG and/or this WTRU as the basis, and be that access can be rejected alternatively.

According to the utility model, the information of relevant System Privileges is by this MAC layer and utilizes a LI NKSYSTEM INFORMATION information and be delivered to this MIH function among this WTRU 150, this MIH function can determine to satisfy one or a plurality of numerical value that are relevant to the effective WLAN of one in these system information parameters of one of system access necessary condition, for example, this system's operator stops up, a service that needs can't be obtained, or this service quality (QoS) can't be satisfied.When if these parameters that this MIH function determines this information service to provide can't satisfy the demand of interior construction, then this MIH function will be utilized a MIH_SCAN information and command this MAC layer to come back to this and scan the stage.

Fig. 5 A is the system discovery of demonstration one bimodulus WTRU 150 and the signal transmission icon of access.In step 1, when activating, or system is when selecting again, this WTRU 150 can carry out to scan program (initiatively, or it is passive), to find a wlan network, and when beacon frame is subjected to detecting, whether this WTRU 150 at first can identification MIH function be supported, if words, this WTRU 150 will read its content, the distinctive information of MIH then is can be by an access network MIHHO member 500 manually, or dynamically set and upgrade, and, any MIH information of in a beacon frame, being found (for example, system's operator identity, W-APN, neighbor map, and System Privileges) all can see through a LINK SYSTEM INFORMATION information and be delivered to the MIHHO member 230 of this WTRU.

In step 2, this information is to handle, and, this WTRU 150 can determine that a wlan system 46 is one to be suitable for the candidate of system access, so the result is, MIHHO member 230 can commander WLAN authentication and with the association of an information (, being denoted as a MIH-SWITCH information) that arrives this MAC layer at this.

In step 3, distinctive authentication of WLAN and connection program are to carry out on this selected wlan system, and this MIHHO member 230 can be notified this 3GPP side, and handing-over is about to take place.

In step 4, this WLAN access gateway (AG) MIHHO member 500 is to utilize this EAP-AKA agreement to trigger WLAN 3GPP authentication and mandate, and 240 of the 3GPP members of this WTRU are the 3GPP aaa servers that the meeting use network access ID (NAI) that it distributed indicates these WLAN AG 46 its associated.The result of successful route then is can set up one and carry the IPsec tunnel of EAP-AKA information.

In step 5, according to successful authentication and mandate, this WTRU 150 just can obtain an area I P address from this region D HCP server.

Fig. 6 is the flow chart in order to show that employed signal sends when system discovery is failed.As what narrated in the preamble, the MIH information of being found in a beacon frame (for example, system's operator identity, W-APN, neighbor map, and System Privileges) can see through a LINK SYSTEM INFORMATION information and be delivered to this WTRUMIHHO member 230, this MIHHO member 230 can decision can't satisfy system access this necessary condition in these system information parameters, provided one, or a plurality of numerical value, for example, this system's operator stops up, can't satisfy this service quality (QoS), or identification has a better candidate among the potential contiguous set that is provided in this information, step 610, then, this MI H function will be commanded this MAC layer to come back to this and be scanned stage, step 620.

Fig. 7 A to Fig. 7 B is the flow chart in order to show that employed signal sends when system authentication is failed.See also Fig. 7 A, this MIH function has determined and need carry out communication via a WLAN who has found, step 710, then, this WTRU MIH function can be by a MIH_SWITCH information is sent to this MAC layer and the triggering authentication program, step 720, wherein, these authentication procedures can comprise uses wired equity to encrypt (wired equivalencyprivacy, WEP), but, be noted that, in order to determine whether this user needs (for example further to allow the access special service, the EAP-AKA authentication of 3GPP internet multimedia service (Internet multimedia service, IMS)), this WTRU can use a special WEP default value gold key (WEP defaultkey), and this AG can use this default value gold key to determine whether proceeding the EAPOL authentication, or whether can authorize basic the Internet access.

If during authentification failure, then system access will be rejected step 730, for example, this can occur in, if the WEP authentification failure, when perhaps if the NAI that this provided can't obtain to differentiate to any 3GPP server, then, this WTRU can get back to this and scan the stage, step 740, perhaps, alternatively, when if this NAI can't differentiate, then this AG can point to this WTRU one region server, further to handle, for example, with the service that is used to provide basic, this AG MAC can provide this MIH function the relevant information that is used for this gold key of this WEP program, and then, this MIH function just can determine, for example, based on employed this default value gold key during the WEP authentication, whether to authorize further authentication procedure, step 750, at this, be noted that the WEP in this context is not the authentication procedure that is regarded as a safety, more precisely, at this, it is to be used to identification to need the further user of authentication.

If authorize when carrying out further authentication procedure, then this MIH function will trigger a cellular authentication attempt, for example, use the EAPOL authentication procedure, step 760, this AAA AG member then is an authentication that can act as between this WTRU requestor and this aaa authentication server, for example, utilize an IPsec tunnel, wherein, this AG can use this NAI that is provided between this start information commutation period to decide this aaa server that can carry out this authentication procedure, when if this AG can't route sends this authentication requesting, then the cellular authentication attempt of this EAPOL will be failed, step 770, and this AG can make by where these these requirements of effective aaa server of indication can route be sent to response, if this WTRU decision in them without any one when suitable, then it just can determine that will return this scans the stage, step 780, find if this AG can utilize this NAI that this WTRU provides one be fit to certificate server the time, then this WTRU just can attempt the authentication for this server, step 715, and in this case, this AG can the branch journey be delivered in the authentication between this WTRU and this certificate server, step 725.

See also Fig. 7 B, then, this WTRU may fail when this cellular authentication procedure, step 735 is if then all accesses can be rejected, and this WTRU then can come back to this and scan stage, step 736, or, only have for special service, for example, the 3GPP service, access refused, then be can obtain step 737 is provided for the access of basic service.

But, this cellular aaa server also may can successfully authenticate this WTRU, step 745, if words, then this WTRU will continue to obtain an area I P address, for example, via DHCP (dynamic host controlprotoco, Dynamic Host Control Protocol), or ARP is (address resolution protocol, address resolution protocol), step 755, at this, utilize a W-APN (WLAN access point name, the WLAN access point name) network ID and operator ID, this WTRU just can construction one FQDN (Fully Qualified DomainName, fully qualified domain name), then, this WTRU can require the IP address resolution, with the access of acquisition for a sealed packet data gateway (PDG), step 765, then, this WTRU can attempt and will obtain a PDG address as the basis with this FQDN, for example, a W-APN, or PLMN (public land mobile network, public land mobile net network) ID, when if this name server (DNS) can't be distinguished this FQDN to any PDG IP address, then this WTRU just can't be accessed in this and both deposit a PDG in the wlan network, step 775, then, this WTRU just can select to come back to this and scan the stage, step 776, or select only arrangement region WLAN server, step 777.

Yet, when if this DNA comes back to effective PDG IP address, then this WTRU can set up a tunnel towards this PDG, for example, one L2TP Tunnel, step 785, then, this WTRU accepts the agent advertisement information (Agent Advertisement messages) from this PDG, step 713, if when not receiving any agent advertisement information, then this WTRU can send agency's request (Agent Solicitation), step 723, but, if having when this PDG receives agent advertisement information, then this WTRU just can obtain direct Care-of Address (care of address from these information, COA), need not act on behalf of solicited message and under the situation that claims especially via one.

If when not receiving any response for this proxy requests, for example, when if MIP does not obtain to support, then this WTRU just can use its area I P address, to be used for the access of cannot see for this Internet of basic I SP service, or just can require to move packet data agreement (PDP) context, step 733, wherein, WTRU-PDG tunnel UP flow can be directly from this WTRU, route arrives the Internet via this PDG tunnel, just, this communication definition also can't provide seamless mobility (seamless mobility) outside this PDG territory, but, if received the words of acting on behalf of request responding for one, then this WTRU just can upgrade its COA, step 724 in its home agent (HomeAgent).Any information that is intended to be used for this WTRU all will be pointed to new COA again by this home agent.

Fig. 8 A and Fig. 8 B system have comprised one in order to show the signal transmission icon of 802.x and 3GPP interaction system access failure.In step 1, when activating or system when selecting again, this WTRU 150 can carry out these to scan program (initiatively or passive), to find a wlan network, and when beacon frame is subjected to detecting, whether this WTRU 150 at first can identification MIH function be supported, if words, this WTRU 150 will read its content, and the distinctive information of MIH then is can be by this AG MIHHO member 500 manually (seeing through a management system) or dynamically set and upgrade.

In step 2, any MIH information of being found in a beacon frame (for example, system's operator identity, W-APN, neighbor map, and System Privileges) all can see through a LINK SYSTEM INFORMATION information and be delivered to the MIHHO member 230 of this WTRU, this MIHHO member 230 then be can decision can't satisfy this necessary condition of being used for system access in that these system information parameters provided one, or a plurality of numerical value, for example, this system's operator may be stopped up, this service quality (QoS) can't obtain to satisfy, or identification has a better candidate among the potential contiguous set that is provided in this information.This communication define and represent first kind of failure example, this is to be depicted among Fig. 8 A, be subjected to around 1 (0 1) expressions.

In step 3, if when this MIHHO member 230 decision these parameters that this information service provided can't satisfy the interior construction demand, then this MIHHO member 230 will be commanded this MAC layer to come back to this by a MIH_SCAN information and be scanned the stage.

In step 4, if it is opposite, when these these MIHHO member 230 these interior construction demands of decision obtain to satisfy, then this MIHHO member 230 will utilize one to trigger the WEP authentication towards the MIH_SWITCH of its MAC layer information, at this, it should be noted that, in order to determine whether this user needs (for example further to allow the access special service, 3GPP IMS) EAP-AKA authentication, this WTRU can use a special WEP default value gold key (WEPdefault key), and this AG can use this default value gold key to decide it whether should proceed the EAPOL authentication, or whether can authorize basic the Internet access.

In step 5, this WTRU 150 authenticates according to 802.11 current WEP programs.

In step 6, if during the WEP authentification failure, then system access can be rejected, and then, this WTRU 150 just can come back to this and scan the stage.This communication define and represent second kind of failure example, this is to be depicted among Fig. 8 B, be subjected to around 2 (0 2) expressions.

In step 7, if this WTRU 150 can come back to the situation that this scans the stage when replacing the WEP authentification failure, this AG MAC 800 can provide these AG MIHHO member 500 relevant these to be used for the information of the golden key of this WEP program, this is to make this MIH function to determine, for example, with employed this default value gold key during WEP authentication as the basis, whether need to authorize further authentication procedure, at this, be noted that, WEP is not the authentication procedure that is regarded as a safety, and among this context, it is mainly to be used to identification to need the further special user of authentication.If the NAI that is provided is all and can't differentiates any 3GPP server, then this AC46 just can to return certainly access or in order further handling this WTRU 150 to be pointed to a region server, for example, and so that basic service to be provided.This is depicted among Fig. 8 A, be subjected to around 3 (0 3) expressions.

In step 8, AG MIHHO member 500 can use an information, at this, is denoted as a MIH_SYSCAP information, triggers the EAPOL authentication procedure.

Among step 9, this AG 46 can carry out the EAPOL program, this AG AAA member 800 will act as the authentication of one between this requestor (WTRU 150) and this certificate server 810 (AAA), this AG 46 can use this NAI that is provided between this start information commutation period to decide more this aaa server 810 of sound of sighing this authentication procedure of execution, when if this AG 46 can't route sends this authentication requesting, it is to make by where these these requirements of effective aaa server of indication can route be sent to response, if without any one when suitable, then it just can determine that will return this scans the stage in them in this WTRU 150 decisions.This is depicted among Fig. 8 B, be subjected to around 4 (0 4) expressions.

Though feature of the present utility model and assembly tie up among the preferred embodiment to be combined into line description especially, but, each feature or assembly all be can be independent use (not needing under the situation of the further feature of these preferred embodiments and assembly) or can with or do not carry out various the combination with further feature of the present utility model and assembly.

Claims (22)

1. multi-mode wireless transmission unit, itself and a cellular network communication, and construction is to receive and to handle the information about in its vicinity at least one WLAN, can determine a plurality of may communications in conjunction with in which be preferable combination, and can set up preferable communication combination, this multi-mode wireless transmission unit is characterised in that and comprises:

One cellular network transceiver, with this cellular network communication, the cellular information that provides about this cellular communication combination is provided described cellular network transceiver via communication combination;

One WLAN transceiver, with a WLAN communication, the WLAN information that provides about this communication combination is provided described WLAN transceiver via communication combination; And

One media independent handover device, itself and this cellular network transceiver and this WLAN transceiver communication, described media independent handover device is constructed as this cellular information of reception and this WLAN information, and assists the handing-over of this wireless transmission/receive unit of position between this cellular network and this WLAN.

2. multi-mode wireless transmission as claimed in claim 1 unit, it is characterized in that, this cellular information is the media independent handover information about this cellular network, and this WLAN information is to be the media independent handover information about this WLAN, this media independent handover device also is used for construction and obtains a plurality of each media independent handover information through identification network through identification network, and this media independent handover information comprises network identification symbol, one network site, one system operator identification symbol, one System Privileges, one quality of service parameters, and a radio access kenel.

3. multi-mode wireless transmission as claimed in claim 1 unit is characterized in that this media independent handover information also comprises a data transmission bauds of each network.

4. multi-mode wireless transmission as claimed in claim 1 unit is characterized in that, this media independent handover information more comprises the network policy setting of each network.

5. multi-mode wireless transmission as claimed in claim 1 unit is characterized in that this media independent handover information is to be received in a beacon frame.

6. as claim the 1 described multi-mode wireless transmission unit, it is characterized in that this media independent handover information is to be received in an exclusive frame.

7. multi-mode wireless transmission as claimed in claim 1 unit is characterized in that this media independent handover information is to be received in a broadcasting channel.

8. multi-mode wireless transmission as claimed in claim 1 unit, it is characterized in that, this cellular network is a code division multiple access system, one global system for mobile communications, one integrates the package radio system, and an one in the 3GPP compatible system, and this WLAN is the compatible WLAN of an IEEE 802.X.

9. multi-mode wireless transmission as claimed in claim 1 unit is characterized in that, also comprises a GPS receiver, so that this cellular network information about the position of this wireless transmission/receive unit to be provided.

10. multi-mode wireless transmission as claimed in claim 1 unit, it is characterized in that, this media independent handover device also via from information that this cellular network received at least one of them and obtain information about this WLAN, and wherein said information comprises the information about this WLAN, one probe requirement/response message of relevant this WLAN is right, and be accessed in a database in this WLAN, and capture this WLAN information from it.

11. multi-mode wireless transmission as claimed in claim 10 unit, it is characterized in that, when this media independent handover device determine this preferable communication in conjunction be for a communication of this WLAN in conjunction with the time, what this media independent handover device can initial this WLAN scans.

12. multi-mode wireless transmission as claimed in claim 11 unit is characterized in that, in this scans and is initiatively or passive.

13. multi-mode wireless transmission as claimed in claim 11 unit is characterized in that this scans is periodically to carry out, till this wireless transmission/receive unit detects this WLAN.

14. multi-mode wireless transmission as claimed in claim 11 unit, it is characterized in that, near this wireless transmission/receive unit, can detect and a plurality ofly can set up effective WLAN that a communication combines, and this media independent handover device decision can be set up the preferable WLAN that a communication combines with it with this wireless transmission/receive unit.

15. multi-mode wireless transmission as claimed in claim 14 unit, it is characterized in that, this media independent handover device is to determine this preferable WLAN via assessment WLAN information, this WLAN information comprises system's operator, service quality, and one at least in the data transmission bauds.

16. a WLAN base station is characterized in that comprising:

One media independent handover device, it provides the media independent handover information about this WLAN; And

One transceiver, itself and this media independent handover device communication, described transceiver is constructed as to set up and combines with a communication of a cellular network, and this media independent handover information is sent to this cellular network.

17. WLAN as claimed in claim 16 base station is characterized in that, this media independent handover information comprises network identification symbol, one network site, system operator identification symbol, a System Privileges, one quality of service parameters, and a radio access kenel.

18. WLAN as claimed in claim 17 base station is characterized in that, this media independent handover information comprises a data transmission bauds.

19. WLAN as claimed in claim 17 base station is characterized in that, this media independent handover information comprises network policy setting.

20. WLAN as claimed in claim 16 base station is characterized in that, this transceiver sends this media independent handover information in a beacon frame.

21. WLAN as claimed in claim 16 base station is characterized in that, this transceiver sends this media independent handover information in an exclusive frame.

22. WLAN as claimed in claim 16 base station is characterized in that, this transceiver sends this media independent handover information in a broadcasting channel.

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