CN101084681B - Wireless communication methods and components for facilitating multiple network type compatibility - Google Patents
Wireless communication methods and components for facilitating multiple network type compatibility Download PDFInfo
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Abstract
This invention relates to wireless local area networks (WLANs), and the interoperability of networks of different types or conforming to different standards, and to methods and apparatus to allow a multimode wireless transmit/receive unit (WTRU), which is able to operate in more than one type of network, to handover from one network type to another without adversely affecting service, utilizing a mechanism and information flows implemented in a new protocol stack.
Description
Technical field
The reciprocation of related network communication of the present invention and different network type or heterogeneous networks specification and the means of communication and the device of allowing various modes wireless transmission/receive unit (WTRU), and unlikely generation negative effect.Particularly, the present invention is relevant wireless transmission/receive unit, these wireless transmission/receive units can operate in more than a kind of network type, wherein, this more than a kind of network type comprises following network, such as: be compatible to the radio area network (WLAN) of IEEE 802 specification families or be compatible to the cellular system of third generation cooperative programme (3GPP) or relevant specification.
Background technology
Wireless telecommunication system is known by the personage who is engaged in the technique field.Generally speaking, this wireless telecommunication system can comprise communication base station, and communication base station can transmit and receive wireless communication signal each other.According to the type of wireless telecommunication system, communication base station can be divided into following two kinds of wireless devices usually, also namely: base station (BS) and transportable user radio transmission/reception unit.
In the present invention's explanation, term " base station " is including, but not limited to base station, access point (AP), B node, positioner or in wireless environment, makes other wireless transmission/receive units be able to other interface arrangements of wireless access base station connection network.
In addition, in the present invention explanation, term " wireless transmission/receive unit " is including, but not limited to subscriber equipment (UE), mobile workstation, fixing or moving user unit, beeper or operated in any other types of devices in wireless environment.This wireless transmission/receive unit comprises personal communication device, such as: phone, video phone and the world-wide web phone with network connections.In addition, wireless transmission/receive unit comprises the Portable personal computing device, such as personal digital assistant (PDA) and the notebook computer with wireless modem, wherein, personal digital assistant and the notebook computer with wireless modem have the similar network function.Portable wireless transmission/reception unit or the wireless transmission/receive unit that is changed position can be called mobile unit.
Generally speaking, network can have a plurality of base stations, and wherein, the synchronous radio communication can be carried out with many wireless transmission/receive units of suitable configuration and a plurality of base stations of suitably configuration in each base station.Perhaps, the part wireless transmission/receive unit also can carry out direct wireless telecommunications with other wireless transmission/receive units, and need to be via network and by base station relaying (relay).Generally speaking, this wireless telecommunications can be called point-to-point (peer-to-peer) wireless telecommunications.When a certain wireless transmission/receive unit and other wireless transmission/receive units carried out direct wireless telecommunications, self also can be configured to or act as base station this wireless transmission/receive unit.In addition, wireless transmission/receive unit can be for plurality of wireless networks, and wireless transmission/receive unit can have the function of network and point-to-point wireless telecommunications simultaneously.
The wireless telecommunication system of one type, such wireless telecommunication system is called radio area network, it can carry out direct wireless telecommunications with the wireless transmission/receive unit that is equipped with the radio area network modem, in addition, the wireless transmission/receive unit that is equipped with the radio area network modem also can carry out point-to-point wireless telecommunications with the wireless transmission/receive unit of similar outfit.In existing market, indivedual manufacturers by radio area network modem actual syndicated in various traditional communications and calculation element.For instance, mobile phone, personal digital assistant, and desktop computer the inside built-in single or multiple radio area network modem mostly.
In the example of mobile phone, a kind of existing specification of extensively having passed through is namely global system for mobile communications (GSM).Global system for mobile communications can be called second generation mobile communcations system (2G) specification, and the correcting of second generation mobile communcations system specification can be called the 2nd, five generations mobile communcations system (2.5G) specification.It is the example of the 2nd, five generations mobile communcations system (2.5G) specification that data (EDGE) are strengthened in general packet wireless service (GPRS) and general packet wireless service evolution, and, with respect to the global system for mobile communications of second generation mobile communcations system specification, the general packet wireless service of the 2nd, five generations mobile communcations system specification and general packet wireless service are evolved and are strengthened the data, services that data can provide relative high speed.In addition, general packet wireless service and general packet wireless service evolution reinforcement data are utilize various features and strengthen to improve existing specification.In January, 1998, Europe mobile communication ANSI-special mobile communication group (ETSI-SMG) reaches an agreement for the wireless access means of No.3 generation mobile communication system (3G) finally, wherein, No.3 generation mobile communication system can be called Universal Mobile Telecommunications System (UMTS).In order further to improve the Universal Mobile Telecommunications System specification, third generation cooperative programme is found in December, 1998.Third generation cooperative programme is to continue to be devoted to general No.3 generation mobile communication system.Except third generation cooperative programme, the also sustainable development of third generation cooperative programme II (3GPP2) specification, and third generation cooperative programme II specification is to utilize core network mobile internet network communication protocol (Mobile IP in a Core Network) to reach movement.
Have the popular WLAN environments of single or multiple radio area network base station, popular WLAN environments is commonly referred to access point, is to set up according to IEEE 802 specification families.Generally speaking, this radio area network of access needs user au-thentication procedure.In addition, wireless telecommunication system is also standardized in the communications protocol of radio area network, such as: the communications protocol configuration that IEEE 802 specification families provide.
Set of basic (BSS) is the basic comprising square of the radio area network of IEEE 802.11 specifications, and set of basic comprises the wireless transmission/receive unit that also can be called work station (STA).Basically, the work station set that can talk to each other can form set of basic.In addition, a plurality of set of basic can be by being called the structural detail of distribution system (DS), so as to forming Extension Services set (ESS).Access point can the wireless access distribution system wireless transmission/receive unit of service, and generally speaking, access point allows that multiple workstation is able to synchronous radio access distribution system.
Take access point in basic radio area network, and wireless transmission/receive unit need to carry out wireless telecommunications with near located particular access point.That is to say: this wireless transmission/receive unit is to close to be connected in particular access point.Once in a while, wireless transmission/receive unit may need maybe to want to change its connection access point, that is to say, wireless transmission/receive unit may need or preferably can " re-connect (re-association) ".For instance, wireless transmission/receive unit may experience severe signal conditioning because shifting out the covering geographic areas of original access point (original AP).In addition, severe signal conditioning also may be led the crowded state because of the covering base set of service in original access point.
Wireless transmission/receive unit can be set up with the communication of world-wide web server and talk with via the connection access point, and then obtains unique Internet protocol addresses, is able to carry out wireless telecommunications via world-wide web so as to making radio area network.Generally speaking, the communication of this network type is to set up route (routing) information, is able to transmission information to world-wide web so as to making wireless transmission/receive unit, and then receives the information that world-wide web is sent to its Internet protocol addresses.In addition, when wireless transmission/receive unit re-connects to new access point (new AP), maintaining communication dialogue also needs a kind of mechanism to talk with to new access point to shift communication, and then new routing information more.
In addition, wireless transmission/receive unit also can be configured, and then carries out wireless telecommunications with the wireless telecommunication system of two or more different network types.This device can be called the various modes wireless transmission/receive unit.For instance, wireless transmission/receive unit can be configured, and then carry out wireless telecommunications with the wireless telecommunication system of three kinds of different network types, and such as: IEEE 802.11 (WiFi) specification network, IEEE 802.16 (WiMAX) specification network and mobile telephone network.In addition, the various modes wireless transmission/receive unit also can be configured, and then operates independently in the wireless telecommunication system of variety of network types.For instance, the early stage publication of the U.S. has just disclosed one kind of multiple mode wireless transmission/reception units No. US20040248615, and it is to be disclosed in early days December 9 2004, and to be held by common assignee of the present invention.
In independent various modes is implemented, although wireless transmission/receive unit can carry out single or multiple wireless telecommunications in different radio communication specification, yet wireless transmission/receive unit but only can handover specific wireless communication in the wireless telecommunication system of same wireless communication type.For additional functionality and elasticity are provided, the present invention wants to provide a kind of handover mechanism, is able to from utilizing the network type work station of the network type work station handover of a certain wireless telecommunications specification to another different radio communication specification so as to making the various modes wireless transmission/receive unit.
Summary of the invention
The present invention is to provide a kind of means of communication, system and element, so as to the wireless transmission/receive unit that makes via the first wireless telecommunications specification to carry out wireless telecommunications with origination base station (original BS), be able to handover to target BS (target BS), and, so as to the wireless transmission/receive unit that makes via the first wireless telecommunications specification to carry out wireless telecommunications with origination base station, be able to target BS, carry out wireless telecommunications via the second wireless telecommunications specification, and the unlikely usefulness that affects.
Further understanding of the present invention is that detailed description, the cooperation accompanying drawing that can utilize preferred embodiment are described in detail as follows, and wherein, similar elements is to mean with same numeral.
The accompanying drawing explanation
Fig. 1 means the system overview figure of the existing wireless telecommunications of radio area network (WLAN);
Fig. 2 means the schematic diagram of the existing radio area network handover of wireless transmission/receive unit (WTRU) wireless telecommunications, wherein, the wireless transmission/receive unit wireless telecommunications are another access points to the radio area network of identical network type from access point (AP) handover;
Fig. 3 means system overview figure of the present invention, so as to the wireless transmission/receive unit that means world-wide web and cellular network, provides wireless communication to the handover of radio area network;
Fig. 4 means the schematic diagram interrelated of various modes wireless transmission/receive unit of the present invention and radio area network network element;
Fig. 5 means the schematic diagram of radio area network network workstation, and wherein, the radio area network network workstation can carry out interaction with world-wide web, cellular network, and the radio area network network workstation can be for management function;
Fig. 6 means the schematic diagram of the present invention's information flow to radio area network from the cellular network handover;
Fig. 7 means the schematic diagram of the present invention's information flow to cellular network from the radio area network handover; And
Fig. 8 means the schematic diagram of another preferred embodiment of various modes wireless transmission/receive unit of the present invention.
Embodiment
Term " base station (BS) " reaches " wireless transmission/receive unit (WTRU) " and illustrates as above.The present invention is to provide a kind of wireless access environment of applying many wireless telecommunications specification, and whereby, any wireless network services (comprising the Internet services) just can offer wireless transmission/receive unit.In addition, when coordinating the various modes wireless transmission/receive unit to use, and when the various modes wireless transmission/receive unit passed through the covering service geographic areas of indivedual base stations, the present invention was particularly useful.Yet, advantage of the present invention is to utilize fixed wireless transmission/receive unit between the specific wireless communication period to reach, because any type of service quality (QoS) of specific wireless communication reduce all may via handover to wireless transmission/receive unit want communication another different radio communication type wireless telecommunication system and point out, so as to the better service quality of specific wireless communication is provided.In preferred embodiment, wireless transmission/receive unit can have the wireless communication apparatus of integrating or installing, such as: honeycomb and/or IEEE 802 specification phase capacitance devices, and then enforcement wireless telecommunications, in addition, the wireless communication apparatus of integrating or installing also can have the handover option of direct line communication function with for line the time.
In addition, in the present invention's explanation, term " frame (frame) " is including, but not limited to package (packet), block (block), frame or cell (cell).Frame is to utilize the ad hoc fashion tissue, so as to the one-tenth beam data transmitted each other.Main element with frame is to comprise: gauge outfit (header), and wherein, gauge outfit comprises control information, such as: synchronous, source, purpose, and length information; Load (payload), wherein, load comprises the transmission data; And mark tail (trailer), wherein, the mark tail comprises package ending, error detection and correction mechanism.
In addition, in the present invention's explanation, term " communications protocol (protocol) " is rule and the program of definition frame form and signal sequence, and whereby, individual device is wireless telecommunications each other.In addition, in the present invention's explanation, term " communications protocol stacking (protocol stack) " is relevant protocol family or the set that definition is worked in coordination and moved.
Please refer to Fig. 1, it means a kind of wireless communication environments, and wherein, wireless transmission/receive unit can be implemented wireless telecommunications via network workstation, and in this example, network workstation is the access point (AP) of radio area network (WLAN).Access point can be connected to each other with other network facilitiess of radio area network, such as: access point controller (AC).As shown in FIG., access point can be implemented wireless telecommunications with five wireless transmission/receive units.These wireless telecommunications can utilize access point to be in harmonious proportion and be synchronous.In addition, this configuration also can be called the set of basic (BSS) of radio area network.
Please refer to Fig. 2, it means the radio area network with two access points, and wherein, two access points can be expressed as respectively original access point (original AP) and target access (target AP).Wireless transmission/receive unit can be placed on the area that original access point and target access all can cover, whereby, when wireless transmission/receive unit when target access is advanced and leave original access point scope maybe when other reasons occurs, wireless transmission/receive unit just can be by wireless telecommunications by original access point " handover (hand off) " to target access.In the wireless telecommunication system of variety of network types, the standard of this internal network handover (infra-network hand off) is all formulated out.Yet the interference networks handover of different network type may go wrong.
In existing market, particularly, in the example of mobile internet network communication protocol (Mobile IP), mutually technology moves (inter-technology mobility) and take application software/3rd layer (Layer 3) to be basic solution.Yet, the quite slow and easy missing data of the transmission speed of this solution.In view of this, as following detailed description, the present invention is to provide a kind of novel processing layer that triggers, also namely: the 2.5th layer (Layer 2.5), be exclusively used in the low communication protocol layer of direct-coupling, such as physical layer and media access control layer (Layer 1 and Layer 2), interference networks wireless telecommunications (inter-network communication) and utilize the higher protocol layer that mutual technology moves to trigger to improve processing speed.
Please refer to Fig. 3, it means can implement via the multiple network type various modes wireless transmission/receive unit of wireless telecommunications.As shown in FIG., wireless transmission/receive unit is to be moved to by the area coverage of honeycomb base station the area coverage of radio area network access point.Now, (inter-network communication hand off) transferred in the interference networks wireless telecommunications to be needed to implement, and is connected, also sets up and be connected with the new of access point with the old of base station so as to termination.
Fig. 3 means two kinds of different paths, so as to continuing wireless transmission/receive unit in the wireless telecommunications of wireless network side.As shown in Figure 3, a kind of path means via cellular system (such as the wireless telecommunications implemented of core network third generation cooperative programme (3GPP) system), such as voice or other data communications.In addition, another kind of path means the wireless telecommunications of implementing via world-wide web, such as: Internet Protocol voice (VoIP) or other data communications.In this example, the world-wide web dialogue of wireless transmission/receive unit preferably can remain the mobile internet network communication protocol family expenses generations (Mobile IP Home Agent) of honeycomb controller, wherein, target is that the Internet Protocol package of wireless transmission/receive unit is to be sent to via mobile internet network communication protocol passage (Mobile IPtunneling) the connection mobile internet network communication protocol external agent (Mobile IP Foreign Agent) of access point controller, immediately, access point controller can be again via new connection the with access point foundation, and then the Internet Protocol package that is wireless transmission/receive unit by target is sent to wireless transmission/receive unit.
According to the present invention, the related service that the interference networks wireless telecommunications are transferred can be implemented to be called the novel protocol layer of the 2.5th layer at least one radio area network communications protocol element, and then is implemented on different nodes.The preferably, access point controller can be implemented the 2.5th layer of communications protocol, and then the mobile related service of processing wireless network side, and the various modes wireless transmission/receive unit can be implemented the 2.5th layer of communications protocol, and then process the mobile related service of user's side and implement wireless telecommunications with the 2.5th layer of communications protocol of access point controller.Optionally, access point is to implement the 2.5th layer of communications protocol, and then implement the wireless telecommunications of wireless transmission/receive unit to the low communication protocol layer information of access point controller, or wireless telecommunications are can cut between access point and access point controller.Perhaps, in the present invention's explanation, the function of novel protocol layer (L2.5) can utilize distinct methods to implement, such as: management plane or other forms of normal communication protocol layer outside.
Please refer to Fig. 4, it means transmission configuration and the service of the 2.5th layer of communications protocol, wherein, the 2.5th layer of communications protocol is to be implemented on various modes wireless transmission/receive unit and compatible radio area network network element, such as: radio area network access point/access point controller.Wireless transmission/receive unit is to have transceiver, so as to via " n group " laminated components, implementing the communications protocol of radio area network wireless telecommunications.Each laminated components is to have radio area network physics (PHY) layer (L1) and radio area network media access control (MAC) layer (L2), so as to logical connection, controlling (LLC) layer and the 2.5th layer of communications protocol element formation interface.Transmission can betide between any network type of " n kind " different network type, and variety of network types can comprise exclusive media access control layer and physical layer.
The 2.5th layer of communications protocol can provide the interference networks decision element, so as to the identification different network type, and then according to the reception wireless communication signal of different network type to implement wireless telecommunications, and, and then the network type that changes the reception wireless communication signal is selected, wherein, receiving wireless communication signal is for the wireless transmission/receive unit wireless telecommunications.The preferably, supporting three kinds of COS transmitting between different network type can be provided, also namely: indication service, the web advertisement and lookup service, and Information Mobile Service.
The indication service is can be as abstract (ABS) layer between existing low communication protocol layer and higher protocol layer, wherein, low communication protocol layer can comprise physical layer and the media access control layer that is called ground floor (L1) and the second layer (L2) and technology orientation, and higher protocol layer can comprise the mobile internet network communication protocol (Mobile IP) that is called the 3rd layer (L3).The preferably, the 2.5th layer of indication service is to implement following function, comprising:
The triggering of setting up the 2.5th layer of Information Mobile Service forms the handover decision-making with the triggering according to ground floor (L1) and the second layer (L2) (upper joining line, downlink link etc. for instance);
Set up the 3rd layer (L3) (mobile internet network communication protocol (Mobile IP) for instance) and higher protocol layer (such as: beginning communications protocol (SIP) is opened in dialogue) triggering to be transmitted in the 3rd layer of (L3) signal transmission interface and application layer signal transmission interface; And the triggering of setting up ground floor (L1) and the second layer (L2) is to be transmitted in physical layer and media access control layer signal transmission interface.
The triggering that is sent to higher protocol layer can provide the simple indication of wireless medium condition, perhaps, the triggering that is sent to higher protocol layer can provide the advanced indication of higher protocol layer, such as: specific instruction (for instance, first links (Link 1) switching to the second link (Link 2)) is provided.This method is based on following hypothesis, and also namely: Network finding and Information Mobile Service can form voluntarily and transmit decision-making, also will change the higher protocol layer of advisory.
The preferably, the web advertisement and lookup service are to find and to select by supervising the network.The preferably, neighboring wireless networks tabular and indivedual wireless network ability (service quality, Interface condition for instance) are to safeguard.Neighboring wireless networks tabular and indivedual wireless network ability are (for instance; service quality, Interface condition) can utilize the various modes wireless transmission/receive unit; via the 2.5th layer signal transmission interface; be sent to radio area network; perhaps; neighboring wireless networks tabular and indivedual wireless network ability (service quality, Interface condition for instance) can utilize operation management and safeguard (OA& M) function is shared.The preferably, Network Discovery Service can with the Information Mobile Service interaction, so as to transmitting necessary information to Information Mobile Service and making Information Mobile Service form suitable handover decisions.
The preferably, Information Mobile Service can comprise mutual IEEE 802 specification Information Mobile Services, honeycomb-radio area network Information Mobile Service or comprise simultaneously above-mentioned two kinds of Information Mobile Services.Yet the network of any type-radio area network Information Mobile Service also can be provided, want the handover of any other type wire/radio network of communication so as to promoting radio area network and specific various modes wireless transmission/receive unit.The preferably, the 2.5th layer of Information Mobile Service of phase IEEE 802 specifications can be managed wireless transmission/receive unit and from IEEE 802.XX gauge mesh cross winding, be handed to the IEEE 802.YY specification network that utilizes different radio communication specification, wherein, IEEE 802.XX specification and IEEE 802.YY specification are the different radio communication specifications of IEEE 802 specification families.
The preferably, the 2.5th layer of Information Mobile Service can utilize management interface to implement wireless telecommunications.The preferably, management interface can utilize mutual access point communications protocol (IAPP), wireless access point control and provide (CAPWAP) or other similar communications protocol.The preferably, Information Mobile Service is to be responsible for secure content transmission, checking in advance and other confirm functions, and then according to the network type of wanting specific Information Mobile Service element to implement the interference networks handover.Particularly, mutually access point communications protocol and wireless access point control and to provide be the movement for IEEE 802.11 specification networks.Utilize this method, the 2.5th layer of Information Mobile Service can be not limited to mutual technology and move (for instance, radio area network is to honeycomb), and the 2.5th layer of Information Mobile Service also goes for the Internet Protocol sub-network Information Mobile Service between constructed or different technologies.
Information Mobile Service can form the handover decision-making of the wireless telecommunications that provide wireless communication to another kind of network type of a certain network type.The preferably, the Information Mobile Service element can be based on desirable service quality position standard and/or communication link condition (for instance, Interface condition changes and expection connects termination), user preference, and other factors, and then form above-mentioned handover decision-making.For instance, can be via arbitrary wireless network and in utilizing the example that desirable service quality position standard continues in wireless telecommunications, the formation of handover decision-making can be based on following factors, such as: cost of serving, network congestion situation or any other ideal parameters relatively.The preferably, Information Mobile Service is technology neutrality, that is to say, Information Mobile Service is the physics requirement that is independent of particular network, and the physics requirement of particular network is that ground floor (L1) and the second layer (L2) element of wireless telecommunications proposes via particular network.
The preferably, honeycomb-radio area network Information Mobile Service can be managed honeycomb-radio area network handover.Based on the type that couples between honeycomb and radio area network, Information Mobile Service preferably can separate IEEE802.XX format technology details and cellular network.The preferably, Information Mobile Service can provide with conventional I ub or Iur interface has similar the connection and the interface of function.The contiguous tabular of honeycomb can be shared via operation management and maintenance function, and operation management and maintenance function can be implemented on the Information Mobile Service the inside.The preferably, safety and mobile management can be implemented on radio area network access channel the inside.
Please refer to Fig. 5, it means the example arrangement of radio area network network workstation (STA).The preferably, network workstation can via mutual incoming communication agreement (such as: mutually access point communications protocol, wireless access point control and provide or other similar communications protocol), and then implement wireless telecommunications with other access points/access point controller.Network workstation can have the interface detailed description of extending mutual access point communications protocol (IAPP+) and extension wireless access point control and (CAPWAP+) being provided, so as to other radio area network access points and access point controller, carrying out wireless telecommunications.In this configuration, being close to tabular is to utilize variety of way to obtain.For instance, extending mutual access point communications protocol is contiguous tabular can be sent to the 2.5th layer, and the 2.5th layer can be resent to network workstation (STA) by contiguous tabular.Perhaps, wireless transmission/receive unit can be repaid 2.5 layers of contiguous tabulars to the, and the 2.5th layer can be resent to other nodes via extending mutual access point communications protocol by contiguous tabular.The preferably, operation management and maintenance proxy can be used for storing contiguous tabular.Utilize this configuration, the 2.5th layer just can be via extending mutual access point communications protocol, extend the wireless access point control and provide or other similar communications protocol form handover decision-makings and carry out the handover decision-making.
Fig. 6 means that the various modes wireless transmission/receive unit instructs formed honeycomb to the radio area network handover according to the present invention.Wireless transmission/receive unit has transceiver, implements the communications protocol of cellular network communication so as to utilizing the honeycomb laminated components, and, so as to via IEEE 802.XX specification laminated components, implementing the communications protocol of radio area network communication.The honeycomb laminated components has honeycomb physical layer (L1), honeycomb media access control layer (L2), honeycomb wireless link control (RLC) layer, reaches the concrete enforcement that the honeycomb Radio Resource is controlled (RRC) layer.IEEE 802.XX specification laminated components is to have previous described the 2.5th layer, radio area network physical layer (L1), radio area network media access control layer (L2), and the concrete enforcement of radio area network logical connection key-course.In addition, the interface element b of the radio resource control layer of connection honeycomb laminated components and the 2.5th layer elements of IEEE 802.XX specification laminated components can provide the 2.5th layer signal of stacking of indivedual communications protocol to send, wherein, it is to utilize indivedual media access control layers and physical layer form to be passed to indivedual networks that the 2.5th layer signal that indivedual communications protocol are stacking sends, and, the interface element b of the radio resource control layer of connection honeycomb laminated components and the 2.5th layer elements of IEEE 802.XX specification laminated components can provide wireless transmission/receive unit and indivedual internetwork atmospheric radio wave signal to send.Radio resource control layer is that (Radio Resource of 3GPP specification is controlled function to third generation cooperative programme, and wherein, it is typical honeycomb communications protocol configuration feature that Radio Resource is controlled function.In addition, other equivalent function, include but not limited to global system for mobile communications radio resource (GSM RR), also can use.
As shown in Figure 6, opening the beginning state is that between various modes wireless transmission/receive unit and cellular network, the active communication via the honeycomb laminated components connects.In this state, the label in Yi Ji path, path two means that the 2.5th layer of triggering may take two kinds of alternative routes of honeycomb-IEEE 802 specification handover Policy Function elements of cellular network to.In the signal in path one sent, the various modes wireless transmission/receive unit can be connected to radio area network via IEEE 802.XX specification laminated components.Wireless transmission/receive unit can transmit the 2.5th layer of trigger message (for instance, metrical information) to radio area network, and, the 2.5th layer of trigger message (metrical information for instance) can be passed to cellular network/IEEE 802 gauge mesh cross windings via Internet Protocol or two kinds of internetwork other common pass through mechanism and pass the Policy Function element.After receiving the 2.5th layer of trigger message, cellular network/IEEE 802 gauge mesh cross windings pass the Policy Function element can utilize the 2.5th layer of trigger message as part handover decision-making process, and cause that immediately handover makes initiatively communication disconnecting (utilizing symbol " X " to mean) and makes initiatively communication connect and can continue at the connection (not shown) of wireless transmission/receive unit/radio area network.
The signal in path one sends and can be implemented on the operation of synchronous radio pattern, wherein, the 2.5th layer function can be via indivedual stacking radio resource control layers and the application programming interfaces (API) of the 2.5th interlayer interface b, and then the 2.5th layer of trigger message is sent to stacking honeycomb side independently.Application programming interfaces are the 2.5th layer and open software interrupt, the calling of beginning to contact the cellular network service, the standard set that reaches data format.Subsequently, the 2.5th layer of information is can send communications protocol via the Radio Resource control signal to be passed to cellular network.In asynchronous wireless mode operation, the honeycomb laminated components can periodically point out the 2.5th layer of trigger message via path two, to be sent to cellular network.This configuration can see Fig. 6, and wherein, periodically prompting can be sent via the interface b of radio resource control layer and the 2.5th interlayer.
The 2.5th layer of information can utilize the whole bag of tricks to be transmitted to path two.For instance, the 2.5th layer of information can be transmitted the complete summary (encapsulation) that sends message into the Radio Resource control signal.Perhaps, the 2.5th layer of information also can be transmitted the part summary that sends message into the Radio Resource control signal.Optionally, the 2.5th layer of information can be interacting at new Radio Resource control signal and send message and old Radio Resource control signal transmission message.Signal just as path one sends, at the signal via path two, send and while receiving that cellular network/IEEE 802 gauge mesh cross windings are passed the 2.5th layer of trigger message of Policy Function element, wireless telecommunication system just can utilize the 2.5th layer of trigger message with as part handover decision-making process, and cause immediately handover.
Fig. 7 means the various modes wireless transmission/receive unit of Fig. 6, wherein, open the initiatively communication of beginning and be between between wireless transmission/receive unit and radio area network, and immediately handover between wireless transmission/receive unit and cellular network.In this example, wireless telecommunications can utilize the IEEE 802 gauge mesh cross windings of radio area network to pass the Policy Function element and be controlled.The label in San Ji path, path four means that respectively the 2.5th layer of triggering may take two kinds of alternative routes that the IEEE 802 gauge mesh cross windings of radio area network are passed the Policy Function element to.In the 2.5th layer signal in path three sent, the 2.5th layer elements of IEEE 802.XX laminated components can be passed the Policy Function element with the IEEE 802 gauge mesh cross windings of radio area network via the active communication link and implement wireless telecommunications.In the signal in path four sent, wireless transmission/receive unit can be connected to cellular network via the honeycomb laminated components.Wireless transmission/receive unit can transmit the 2.5th layer of trigger message to cellular network, and wherein, the 2.5th layer of trigger message can be via two kinds of internetwork Internet Protocols or other common pass through mechanism, and then are resent to radio area network and IEEE 802 gauge mesh cross windings are passed the Policy Function element.After receiving the 2.5th layer of trigger message, IEEE 802 gauge mesh cross windings pass the Policy Function element can utilize the 2.5th layer of trigger message as part handover decision-making process, and cause that immediately handover makes initiatively communication disconnecting (utilizing symbol " X " to mean) and makes initiatively communication connect and can continue at the connection (not shown) of cellular network/wireless transmission/receive unit.
In the operation of synchronous radio pattern, the radio resource control layer element is can be via interface b, and then background wireless resource key-course handover relevant information is transmitted independently to the 2.5th layer elements of IEEE 802.XX specification laminated components, wherein, the 2.5th layer elements of IEEE 802.XX specification laminated components is can be via path three, so as to background wireless resource key-course handover relevant information is relayed to radio area network, and be passed to cellular network with being about to background wireless resource key-course handover relevant information, and then set up cellular network/radio area network handover and connect.Perhaps, the radio resource control layer element is can be via path four, and so as to background wireless resource key-course handover relevant information being sent to independently to cellular network, and meaning: wireless telecommunications are to utilize the 2.5th layer of IEEE 802.XX specification network to implement handover to process at present.
In handover decision-making or condition, be to be decided by the example of wireless transmission/receive unit, the 2.5th layer elements of the IEEE 802.XX specification laminated components of wireless transmission/receive unit can be informed this situation that preferably IEEE 802 gauge mesh cross windings pass the Policy Function element.The preferably, immediately, IEEE 802 gauge mesh cross windings pass the Policy Function element be can form final decision with handover to cellular network.If final decision will continue, the 2.5th layer elements of radio area network can send a signal to cellular network.In handover to cellular network, the preferably, the action of follow-up handover can utilize cellular network-IEEE 802 gauge mesh cross windings to pass the Policy Function element and determine, as shown in Figure 6.
Fig. 8 means the illustration of wireless transmission/receive unit, wherein, wireless transmission/receive unit can operate in the wireless communication environments of four kinds of different network types, also namely: global system for mobile communications (GSM), third generation cooperative programme, IEEE 802.11 specification radio area networks, and IEEE 802.16 specification radio area networks.The wireless transmission/receive unit of Fig. 8 has transceiver 50, sends so as to the signal of implementing variety of network types.Transceiver 50 has the global system for mobile communications laminated components, in order to process the communications protocol of global system for mobile communications physical layer (L1), global system for mobile communications media access control layer (L2), global system for mobile communications honeycomb wireless link key-course and global system for mobile communications radio resource.In addition, transceiver 50 also has third generation cooperative programme laminated components, in order to process the communications protocol of third generation cooperative programme physical layer (L1), third generation cooperative programme media access control layer (L2), third generation cooperative programme honeycomb wireless link key-course and a third generation cooperative programme radio resource control layer.In addition, transceiver also has IEEE 802.11 specification laminated components, in order to process the communications protocol of IEEE 802.11 specification physical layers (L1), IEEE 802.11 specification media access control layers (L2) and IEEE 802.11 specification logical connection key-courses.In addition, transceiver 50 also has IEEE 802.16 specification laminated components, in order to process the communications protocol of IEEE 802.16 specification physical layers (L1), IEEE 802.16 specification media access control layers (L2) and IEEE 802.16 specification logical connection key-courses.In addition, interface element b ' can be provided, and sends so as to promoting the 2.5th layer signal between four kinds of laminated components.The 2.5th layer elements that is different from a certain radio area network stacked elements, the 2.5th layer elements can be implemented on interface b ' the inside.Trigger message translation with respect to the communications protocol laminated components of active communication can be formed at the 2.5th layer elements, so as to making trigger message, can be understood by the wireless telecommunication system of different network type, and, the wireless telecommunication system of different network type is the handover candidate of initiatively communication, so as to make wireless transmission/receive unit want the wireless telecommunications of any network type of communication can handover to the wireless telecommunications of another kind of network type.
Fig. 8 means the illustration that signal sends, and wherein, the wireless telecommunications of the IEEE 802.11 specification networks of active wireless Local Area Network are that handover is to the global system for mobile communications cellular network.In this example, wireless telecommunications can utilize the IEEE 802 gauge mesh cross windings of IEEE 802.1 specification radio area networks to pass the Policy Function element and be controlled.The label in Wu Ji path, path six means that respectively the 2.5th layer of triggering may take two kinds of alternative routes that the IEEE 802 gauge mesh cross windings of IEEE 802.11 specification radio area networks are passed the Policy Function element to.In the 2.5th layer signal in path five sent, the 2.5th layer elements can utilize IEEE802 specification laminated components, connected and with the IEEE 802 gauge mesh cross windings of radio area network, passed the Policy Function element and carry out wireless telecommunications via the active communication.In the signal in path six sent, wireless transmission/receive unit can be connected to the global system for mobile communications cellular network via global system for mobile communications honeycomb laminated components.Wireless transmission/receive unit 50 can transmit the 2.5th layer of trigger message to cellular network, and wherein, the 2.5th layer of trigger message can be via two kinds of internetwork Internet Protocols or other common pass through mechanism, and then are resent to IEEE 802.11 specification radio area networks and IEEE 802 gauge mesh cross windings are passed the Policy Function element.After receiving the 2.5th layer of trigger message, IEEE 802 gauge mesh cross windings pass the Policy Function element be can utilize the 2.5th layer of trigger message as part handover decision-making process, and cause that immediately handover makes initiatively IEEE 802.11 specification radio area network wireless telecommunications disconnectings (utilizing symbol " X " to mean) and makes initiatively IEEE 802.11 specification radio area network wireless telecommunications connect and can continue at the connection (not shown) of global system for mobile communications cellular network/wireless transmission/receive unit.
Shown in dotted line, the wireless transmission/receive unit of Fig. 8 also can comprise wired Signal Processing Element W.The preferably, wire signal treatment element W is the communications protocol that can implement another kind of network type, and then processes network communication signal that wireless transmission/receive unit receives via wired connection, and optionally sets up network signal via wired connection, to implement communication.In this example, interface element b ' can promote the 2.5th layer signal that leads to wire signal treatment element W and wireless laminated components to send, and then allows the transfer between wire communication and wireless telecommunications.At wireless transmission/receive unit, comprise in the example of wired Signal Processing Element, even wireless transmission/receive unit only has the single wireless operator scheme, the present invention can be suitable for too.
Although various feature of the present invention and element have coordinated the particular combinations of preferred embodiment to describe in detail as above, yet, various feature of the present invention and element also can be used separately (and unnecessary other features and element with preferred embodiment), perhaps, various feature of the present invention and element also can have various combination (and unnecessary other features and element that has or omit preferred embodiment).
The preferably, the 2.5th layer elements of Fig. 6 to 8 can be implemented on single IC for both, such as: Application Specific Integrated Circuit (ASIC), wherein, single IC for both is the laminated components that has interface element and implement indivedual wireless network communication agreements.Yet these elements also can be implemented on a plurality of stand-alone integrated circuit.
In addition, the detailed description of preferred embodiment is with reference to specific wireless transmission/reception unit and network configuration, yet specific wireless transmission/reception unit and network configuration are only illustrations of the present invention, but not be used for limiting the invention to specific wireless transmission/reception unit and network configuration.In view of this, under the prerequisite without prejudice to spirit of the present invention and scope, being familiar with present technique person also can be for the various changes of the invention process and adjustment.
Preferred embodiment:
1. wireless transmission/receive unit, this wireless transmission/receive unit are to have a transceiver, so as to for multiple network types.
2. as the 1st described wireless transmission/receive unit of preferred embodiment, this wireless transmission/receive unit is for the honeycomb wireless telecommunication system.
3. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is for the global system for mobile communications system.
4. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is for third generation cooperative programme system.
5. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is for the IEEE 802 compatible radio area networks of specification family.
6. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is for IEEE 802.11 specification system.
7. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is for IEEE 802.16 specification system.
8. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is for IEEE 802.21 specification system.
9. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit has transceiver, so as to receiving and transmitting eurypalynous selectivity, set up wireless communication signal, various types of wireless communication signal are to set up according to a better signal configuration, wherein, this better signal configuration is for this wireless transmission/receive unit, to want the communication of the network type of communication.
10. as the 9th described wireless transmission/receive unit of preferred embodiment, this wireless transmission/receive unit is for wireless network.
11. as the described wireless transmission/receive unit of preferred embodiment 9-10 item, it is cable network that this wireless transmission/receive unit is wanted at least a network type of communication.
10. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit comprises a plurality of Signal Processing Elements, so as to implementing the communications protocol of different network type, and then process the network communication signal of indivedual network types that this transceiver receives, and, and then the network communication signal of optionally setting up indivedual network types is to utilize this transceiver to transfer out.
11. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit comprises an interference networks decision element, in order to identify different network type, so as to the reception wireless communication signal according to different network type to implement wireless telecommunications, and, so as to enforcement, receive a change of the network type selection of wireless communication signal.
12. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit comprises an interface element, this interface element is to utilize this interference networks decision element between these Signal Processing Elements with the communication transmitted signal, whereby, when a kind of communication of network type signal switched to the communication of another kind of different network type signal, a wireless transmission/receive unit communication was to continue.
13. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, wherein, a plurality of Signal Processing Elements are to have a honeycomb Signal Processing Element to process honeycomb physical layer, honeycomb media access control layer, honeycomb wireless link key-course, and the honeycomb signal of honeycomb radio resource control layer.
14. as the 13rd described wireless transmission/receive unit of preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, wherein, these Signal Processing Elements also have a radio area network Signal Processing Element to process radio area network physical layer, radio area network media access control layer, and the radio area network signal of radio area network logical connection key-course.
15. as the described wireless transmission/receive unit of preferred embodiment 13-14 item, this wireless transmission/receive unit also comprises an interference networks decision element, in order to the honeycomb radio resource control layer of interface honeycomb Signal Processing Element and the radio area network media access control layer of radio area network Signal Processing Element.
16. every described wireless transmission/receive unit as previous as preferred embodiment, wherein, the interference networks decision element is another additional layer (2.5 layers) as this radio area network Signal Processing Element, in order to indication service, the web advertisement and lookup service and the Information Mobile Service of interference networks handover to be provided, and this interface element is to send for the signal between another additional layer of this radio area network (2.5 layers) and this honeycomb radio resource control layer.
17. every described wireless transmission/receive unit as previous as preferred embodiment, wherein, interference networks decision element as another additional layer (2.5 layers) is in order to implement the indication service, and it is that the triggering of setting up another additional layer of this radio area network (2.5 layers) Information Mobile Service forms a handover decision-making with the triggering according to physical layer and media access control layer.
18. as the 17th described wireless transmission/receive unit of preferred embodiment, wherein, as the interference networks decision element of another additional layer (2.5 layers), be to be transmitted in higher protocol layer signal transmission interface in order to the triggering of setting up higher protocol layer.
19. as the described wireless transmission/receive unit of preferred embodiment 17-18 item, wherein, the interference networks decision element as another additional layer (2.5 layers) is to set up the triggering of physical layer and media access control layer to be transmitted in physical layer and media access control layer signal transmission interface.
20. as the described wireless transmission/receive unit of preferred embodiment 17-18 item, wherein, interference networks decision element as another additional layer (2.5 layers) is to implement the web advertisement and lookup service, and it is safeguard an adjacent network tabular with the supervising the network discovery and select.
21. as the 20th described wireless transmission/receive unit of preferred embodiment, wherein, the adjacent network tabular has indivedual network capabilitiess, whereby, the web advertisement and lookup service can be with these Information Mobile Service interactions to carry the information to these Information Mobile Services and to make these Information Mobile Services form suitable handover decision-making.
22. as the described wireless transmission/receive unit of preferred embodiment 17-21 item, wherein, interference networks decision element as another additional layer (2.5 layers) is to implement Information Mobile Service, and the secure content transmission of carrying out the interference networks handover so as to the network type of wanting communication according to this wireless transmission/receive unit reaches authentication function in advance.
23. as the described wireless transmission/receive unit of preferred embodiment 17-22 item, wherein, as the interference networks decision element of another additional layer (2.5 layers), be to form the handover decision-making, and then by the communication of a kind of communication handover of network type signal to another kind of different network type signal according to desirable service quality position standard.
24. as the described wireless transmission/receive unit of preferred embodiment 17-23 item, wherein, as the interference networks decision element of another additional layer (2.5 layers), be to form the handover decision-making, and then by the communication of a kind of communication handover of network type signal to another kind of different network type signal according to the communication link condition.
25. as the described wireless transmission/receive unit of preferred embodiment 17-24 item, wherein, as the interference networks decision element of another additional layer (2.5 layers), be to form the handover decision-making, and then by the communication of a kind of communication handover of network type signal to another kind of different network type signal according to user preference.
26. as the described wireless transmission/receive unit of preferred embodiment 17-24 item, this wireless transmission/receive unit is to form the handover decision-making, and then by the communication of a kind of communication handover of network type signal to another kind of different network type signal, whereby, these Information Mobile Services can be independent of the network physical requirement of physical layer and the proposition of media access control layer element.
27. every described wireless transmission/receive unit as previous as preferred embodiment, wherein, the interference networks decision element is another additional layer (2.5 layers) as interface element, in order to indication service, the web advertisement and lookup service and the Information Mobile Service of interference networks switching to be provided.
28. every described wireless transmission/receive unit as previous as preferred embodiment, wherein, interface element is to send for the signal between another additional layer of this radio area network (2.5 layers) and many Signal Processing Elements.
29. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, this wireless transmission/receive unit has many Signal Processing Elements, wherein, these Signal Processing Elements have a global system for mobile communications honeycomb Signal Processing Element to process global system for mobile communications honeycomb physical layer, global system for mobile communications honeycomb media access control layer, global system for mobile communications honeycomb wireless link key-course, and the global system for mobile communications honeycomb signal of global system for mobile communications honeycomb radio resource control layer.
30. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, this wireless transmission/receive unit has many Signal Processing Elements, these Signal Processing Elements also have third generation cooperative programme (3GPP) honeycomb Signal Processing Element to process third generation cooperative programme honeycomb physical layer, third generation cooperative programme honeycomb media access control layer, third generation cooperative programme honeycomb wireless link key-course, and the third generation cooperative programme honeycomb signal of third generation cooperative programme honeycomb radio resource control layer.
31. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, this wireless transmission/receive unit has many Signal Processing Elements, these Signal Processing Elements also have IEEE 802.11 specification radio area network Signal Processing Elements to process IEEE 802.11 specification radio area network physical layers, IEEE 802.11 specification radio area network media access control layers, and the IEEE 802.11 specification radio area network signals of IEEE 802.11 specification radio area network logical connection key-courses.
32. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, this wireless transmission/receive unit has a plurality of Signal Processing Elements, these Signal Processing Elements also have IEEE 802.16 specification radio area network Signal Processing Elements to process IEEE 802.16 specification radio area network physical layers, IEEE 802.16 specification radio area network media access control layers, and the IEEE 802.16 specification radio area network signals of IEEE 802.16 specification radio area network logical connection key-courses.
33. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for cellular network and radio area network, wherein, this interference networks decision element is in order to interface honeycomb treatment element and radio area network treatment element.
34. every described wireless transmission/receive unit as previous as preferred embodiment, wherein, Signal Processing Element is to process the network communication signal that wireless transmission/receive unit receives via wired connection.
32. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for wireless network and cable network, wherein, this wireless transmission/receive unit has a plurality of Signal Processing Elements, and these Signal Processing Elements have a wire signal treatment element to process physical layer, media access control layer, and the wire signal of logical connection key-course.
33. every described wireless transmission/receive unit as previous as preferred embodiment, this wireless transmission/receive unit is simultaneously for wireless network and cable network, wherein, the interference networks decision element is in order to interface wire signal treatment element and wireless signal treatment element.
Although various feature of the present invention and element have coordinated the particular combinations of preferred embodiment to describe in detail as above, yet, various feature of the present invention and element also can be used separately (and unnecessary other features and element with preferred embodiment), perhaps, various feature of the present invention and element also can have various combination (and unnecessary other features and element that has or omit preferred embodiment).
Claims (7)
1. a wireless transmission/receive unit (WTRU), this wireless transmission/receive unit comprises:
IEEE 802.XX specification laminated components comprises:
Radio area network (WLAN) physics (PHY) layer elements, be configured to the network service with the first kind, and the network of the wherein said first kind is IEEE 802 wireless networks;
WLAN media access control (MAC) layer elements, be configured to communicate by letter with described WLAN PHY layer elements;
(LLC) layer elements is controlled in logical connection, is configured to communicate by letter with described WLAN MAC layer elements; With
2.5 layer interference networks decision element, be configured to directly with described WLAN PHY layer elements, described WLAN MAC layer elements and higher level element, communicate by letter, and described 2.5 layers of interference networks decision element also are configured to communicate by letter with honeycomb PHY layer elements, honeycomb MAC layer elements and higher level element by interface element b;
The honeycomb laminated components comprises:
Honeycomb PHY layer elements, be configured to the network service with Second Type,
Honeycomb MAC layer elements, be configured to communicate by letter with described honeycomb PHY layer elements;
The honeycomb wireless link is controlled (RLC) layer elements, is configured to communicate by letter with described honeycomb MAC layer elements; With
The honeycomb Radio Resource is controlled (RRC) layer elements, is configured to communicate by letter with described honeycomb rlc layer element;
And
At least one transceiver, wherein said WLAN PHY layer elements and described honeycomb PHY layer elements are comprised in described at least one transceiver;
Described interface element b connects described honeycomb rrc layer element and described 2.5 layers of interference networks decision element, and
Wherein said 2.5 layers of interference networks decision element also are configured to the Information Mobile Service that is provided for switching between network, indication service and for the web advertisement and the lookup service of discovery and the selection of supervising the network.
2. wireless transmission/receive unit according to claim 1, wherein said indication service is configured to:
Set up the triggering of 2.5 layers of Information Mobile Service and from the triggering of described WLAN PHY layer elements and honeycomb PHY layer elements and described WLAN MAC layer elements and honeycomb MAC layer elements, make handover decisions with basis.
3. wireless transmission/receive unit according to claim 2, wherein said handover trigger comprise that downlink link triggers.
4. wireless transmission/receive unit according to claim 2, wherein said handover trigger comprise that joining line triggers.
5. wireless transmission/receive unit according to claim 1, the wherein said web advertisement and lookup service are configured to maintain the list of adjacent network, and described list comprises capability information.
6. wireless transmission/receive unit according to claim 5, wherein said capability information comprises service quality (QoS) information.
7. wireless transmission/receive unit according to claim 5, wherein said capability information comprises Interface condition information.
Applications Claiming Priority (5)
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| US11/019,690 | 2004-12-21 | ||
| US11/019,690 US8233450B2 (en) | 2004-09-10 | 2004-12-21 | Wireless communication methods and components for facilitating multiple network type compatibility |
| PCT/US2005/032272 WO2006031671A2 (en) | 2004-09-10 | 2005-09-09 | Wireless communication methods and components for facilitating multiple network type compatibility |
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| CN201310516793.8A Division CN103596226A (en) | 2004-09-10 | 2005-09-09 | WTRU and method of application in WTRU |
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| CN101084681B true CN101084681B (en) | 2013-11-27 |
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| CNU2005201072569U Expired - Fee Related CN201015192Y (en) | 2004-09-10 | 2005-09-12 | Wireless communication components for facilitating multiple network type compatibility |
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| US9271254B2 (en) * | 2012-10-22 | 2016-02-23 | Qualcomm Incorporated | Network directed system selection using wireless device input |
| CN112565680A (en) * | 2020-11-09 | 2021-03-26 | 天擎集成电路股份有限公司 | Radio frequency/wireless network device with multi-workstation mode, image monitoring equipment and wireless communication system |
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| CN201015192Y (en) * | 2004-09-10 | 2008-01-30 | 美商内数位科技公司 | Wireless communication components for facilitating multiple network type compatibility |
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