WO2010099655A1 - Procédé et appareil pour station d'abonné wimax accédant à un système wimax - Google Patents

Procédé et appareil pour station d'abonné wimax accédant à un système wimax Download PDF

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Publication number
WO2010099655A1
WO2010099655A1 PCT/CN2009/070625 CN2009070625W WO2010099655A1 WO 2010099655 A1 WO2010099655 A1 WO 2010099655A1 CN 2009070625 W CN2009070625 W CN 2009070625W WO 2010099655 A1 WO2010099655 A1 WO 2010099655A1
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WIPO (PCT)
Prior art keywords
wimax
subscriber station
traffic load
wlan
base station
Prior art date
Application number
PCT/CN2009/070625
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English (en)
Chinese (zh)
Inventor
邱吉刚
杨峰
徐斌阳
Original Assignee
上海贝尔股份有限公司
阿尔卡特朗讯公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯公司 filed Critical 上海贝尔股份有限公司
Priority to CN200980157742.2A priority Critical patent/CN102342063B/zh
Priority to PCT/CN2009/070625 priority patent/WO2010099655A1/fr
Publication of WO2010099655A1 publication Critical patent/WO2010099655A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present invention relates to a technology for a WiMAX system and a wireless local area network (WLAN) system coexisting in an unlicensed frequency band, and more particularly to a method for a WiMAX subscriber station to access a WiMAX system in the case where a WiMAX system and a WLAN system coexist in an unlicensed frequency band Corresponding WiMAX subscriber stations, WiMAX base stations, and access point equipment for WLAN systems. Background technique
  • WiMAX Worldwide Interoperability for Microwave Access
  • WiMAX is a broadband wireless access technology based on the IEEE802.16 series of standards. It has the characteristics of long transmission distance, high access speed and high security.
  • wireless systems with different physical layer technologies can operate simultaneously on the same frequency band due to the non-exclusive nature of the unlicensed band.
  • wireless devices such as WLAN systems, Bluetooth devices, and cordless phones based on the IEEE 802.il standard can operate in the 2.4 GHz band without the permission of the relevant regulatory agencies, resulting in related interference between these devices.
  • WiMAX systems and WLAN systems in unlicensed bands, such as the 2.4 GHz band, the Unlicensed National Information Infrastructure (U-NII) band.
  • U-NII Unlicensed National Information Infrastructure
  • 802.16h proposes a carrier-based multiple access/collision avoidance The (CSMA/CA) protocol (also known as the "listen before” protocol) ensures that WiMAX systems and WLAN systems can coexist on unlicensed bands.
  • CSMA/CA carrier-based multiple access/collision avoidance The
  • the uplink and downlink subframes can be logically regarded as a single packet having a fixed duration, the fixed duration being equal to the single frame duration.
  • the subscriber stations of the WiMAX system and the WLAN system employ a carrier detection mechanism to listen to the idle channel. If the signal power of the current channel is detected to be greater than a predetermined threshold, the wireless channel is considered to be in use by other devices, i.e., in a "busy" state; otherwise, the wireless channel is considered to be idle and can initiate its own transmission.
  • the subscriber stations and base stations of the WiMAX system are similar to the subscriber stations of the WLAN system, accessing the channel in accordance with the procedures specified by the 802.11 standard.
  • the WiMAX system's coverage (0-50 km) is much larger than the WLAN system's coverage (0-100 m), it can contain multiple (or even hundreds) WLANs within the coverage of a WiMAX system. system. If the CSMA/CA protocol described above is used, all WLAN systems located within the coverage of the WiMAX system must be suspended during transmission/reception of the WiMAX system. In other words, a WiMAX communication link will stop multiple WLAN communication links.
  • FIG. 1 shows a case where a WiMAX system and a plurality of WLAN systems in the related art coexist.
  • 1 there are fields 10 corresponding WLANl-WLAN10 o WLAN system in CSMA / CA protocol, WiMAX systems and WLAN systems are transmitted by the message transmission time slot is declared, in the coverage of the WiMAX system ( That is, the channel occupancy time is T1 and T2.
  • the WiMAX base station transmits/receives uplink and downlink subframes with its WiMAX subscriber station, and the access point equipment and WLAN subscriber stations of all WLAN systems will suspend their transmission until T1 ends.
  • the WiMAX base station and its corresponding subscriber station will stop transmitting/receiving subframes, and the access point devices and WLAN subscriber stations of all WLAN systems simultaneously transmit/receive packets without interfering with each other.
  • the WiMAX link Since the data rate of the WLAN link (54 Mbps, 802.1 lg/a) is roughly equivalent to the data rate of the WiMAX link (typically 20 Mbps), if the WiMAX system can reduce its channel occupancy time, the saved channel time can be 10 WLAN systems are used simultaneously, which can significantly improve the efficiency of spectrum usage.
  • the existing CSMA/CA protocol does not consider the difference in coverage between WiMAX systems and WLAN systems, and cannot effectively benefit Use the channel. Summary of the invention
  • the present invention has been made based on the above technical problems, and an object thereof is to provide a method for a WiMAX subscriber station to access a WiMAX system, so as to improve spectrum efficiency.
  • the present invention also provides corresponding WiMAX subscriber stations, WiMAX base stations, and access point equipment for WLAN systems.
  • a method for a WiMAX subscriber station to access a WiMAX system comprising: the WiMAX subscriber station accessing a WiMAX base station; the WiMAX subscriber station determining whether it is located within a coverage of a WLAN system of the at least one WLAN system; Establishing a connection between the WiMAX base station and an access point device of the WLAN system in which the WiMAX subscriber station is located; the WiMAX subscriber station accessing the access point device; and the WiMAX subscriber station via the access point device Transmitting a traffic load with the WiMAX base station.
  • a WiMAX subscriber station that is selectively operable in a WiMAX mode and a WLAN mode, comprising: a transceiver for transmitting and receiving signals; a WiMAX access device, for Accessing a WiMAX base station; a location determining device, configured to determine whether the WiMAX subscriber station is located within a coverage of a WLAN system; a WLAN access device, an access point device for accessing the WLAN system; And a decryption device, configured to encrypt and decrypt a traffic load transmitted between the WiMAX subscriber station and the access point device or the WiMAX base station.
  • a WiMAX base station comprising: transceiver means for transmitting and receiving signals; and management control information broadcasting means for broadcasting management control information messages to establish a downlink with a WiMAX subscriber station Synchronizing means for authenticating the WiMAX subscriber station; and key exchange means for exchanging WiMAX keys for encrypting traffic load in the WiMAX system with the WiMAX subscriber station; set up And a device, configured to establish a connection with an access point device of the WLAN system; and an encryption and decryption device, configured to perform a traffic load transmitted between the WiMAX base station and the access point device or the WiMAX subscriber station Add and decrypt.
  • an access point device of a WLAN system comprising: a transceiver for transmitting and receiving signals; an authentication device for authenticating a WiMAX subscriber station; and a key exchange device And a WLAN key for encrypting a traffic load in the WLAN system; a connection establishing means for establishing a connection with the WiMAX base station; and an encryption and decryption means for the device at the access point and the The traffic load transmitted between the WiMAX subscriber station and the WiMAX base station is encrypted and decrypted.
  • FIG. 1 is a schematic diagram of a coexistence of a WiMAX system and a plurality of WLAN systems in the prior art
  • FIG. 2 is a flowchart of a method for a WiMAX subscriber station to access a WiMAX system according to an embodiment of the present invention
  • FIG. 3 is a flow chart showing the steps of the WiMAX subscriber station accessing the WiMAX base station in the embodiment shown in FIG. 2;
  • FIG. 4 is a flow chart showing the steps of transmitting a traffic load between a wireless WiMAX subscriber station and a WiMAX base station via a WLAN system in the embodiment shown in FIG. 2;
  • FIG. 5 is a schematic diagram of a method of using the embodiment shown in FIG. 2 in the case where a WiMAX system and a plurality of WLAN systems coexist;
  • Figure 6 is a schematic block diagram of a WiMAX subscriber station in accordance with one embodiment of the present invention
  • Figure 7 is a schematic block diagram of a WiMAX base station in accordance with one embodiment of the present invention
  • Figure 8 is a WLAN system in accordance with one embodiment of the present invention. Schematic block diagram of an access point device. detailed description
  • WiMAX system and multiple WLAN systems coexist on the unlicensed band. Since WiMAX systems and WLAN systems use similar physical layer technologies, namely Orthogonal Frequency Division Multiplexing (OFDM)-based air interface technology, WiMAX subscriber stations of WiMAX systems can be selectively modified in WiMAX mode and WLAN by simple modification. Working in mode.
  • OFDM Orthogonal Frequency Division Multiplexing
  • step S201 the WiMAX subscriber station accesses the WiMAX base station.
  • the WiMAX subscriber station communicates directly with the WiMAX base station via the WiMAX radio interface, at which point the WiMAX subscriber station operates in WiMAX mode.
  • Figure 3 shows the flow of a WiMAX subscriber station accessing a WiMAX base station.
  • step S301 the WiMAX subscriber station scans the downlink channel and establishes synchronization of the downlink channel with the WiMAX base station.
  • step S305 the WiMAX subscriber station acquires parameters of the uplink and downlink link channel.
  • step 310 the WiMAX subscriber station and the WiMAX base station perform initial ranging.
  • This step can be done by sending/receiving a ranging request/response (RNG-REQ/RNG-RSP) message.
  • RNG-REQ/RNG-RSP ranging request/response
  • the WiMAX subscriber station can adjust the frequency offset, time offset and power offset.
  • step S315 the WiMAX subscriber station negotiates with the WiMAX base station the basic capabilities of the WiMAX subscriber station to determine the parameters that the WiMAX subscriber station should use during subsequent communications. This step can be done by sending/receiving a basic capability request/response (SBC-REQ/SBC-RSP) message.
  • SBC-REQ/SBC-RSP basic capability request/response
  • the WiMAX subscriber station is authenticated and the WiMAX key is exchanged.
  • the WiMAX base station and the access gateway authenticate the WiMAX subscriber station, and then, in the case of authentication, the WiMAX subscriber station sends a Key Management Request (PKM-REQ) message to the WiMAX base station, and the WiMAX base station responds to the request message to the WiMAX.
  • PLM-REQ Key Management Request
  • the subscriber station sends a WiMAX key.
  • step S325 the WiMAX subscriber station registers with the WiMAX base station, which can This is done by sending/receiving a registration request/response (REG-REQ/REG-RSP) message.
  • REG-REQ/REG-RSP registration request/response
  • the WiMAX base station increases its channel occupancy time to accommodate transmissions with WiMAX subscriber stations.
  • step S205 the WiMAX subscriber station determines if it is within the coverage of one of the plurality of WLAN systems.
  • the WiMAX subscriber station scans and listens to the channel in the unlicensed band, and determines whether there is a signal transmitted by the access point device of a certain WLAN system on the channel being monitored and the signal is Whether the power exceeds a predetermined power threshold. If the power of a signal from a certain WLAN system exceeds a predetermined power threshold, the WiMAX subscriber station determines that it is within the coverage of the WLAN system. Otherwise, the WiMAX subscriber station will continue to listen on the next scanned channel. If the WiMAX subscriber station does not hear a WLAN signal that exceeds a predetermined power threshold in all channels, then it is determined that it is not within the coverage of any WLAN system. After determining the WLAN system in which it is located, the WiMAX subscriber station informs the WiMAX base station that it can access the WLAN system to transmit the traffic load through the WLAN radio interface, and the information of the WLAN system, such as an IP address.
  • step S210 the WiMAX base station establishes an IP connection with the access point device of the WLAN system according to information, such as an IP address, of the WLAN system in which the WiMAX subscriber station is received from the WiMAX subscriber station. After the WiMAX base station establishes an IP connection with the access point device, it will reduce its occupation time of the channel.
  • step S215 the WiMAX subscriber station accesses the access point device of the WLAN system in which it is located.
  • the WiMAX subscriber station uses the CSMA/CA mode to access the channel, and then the access point device authenticates the WiMAX subscriber station, and in the case of authentication, the WLAN access point device exchanges with the WiMAX subscriber station for The WLAN key of the traffic load is encrypted in the WLAN system.
  • step S220 the WiMAX subscriber station transmits the traffic load between the access point device of the WLAN system in which it is located and the WiMAX base station.
  • Figure 4 shows a flow chart of step S220, wherein Figure 4(a) is the transmission of the uplink traffic load and Figure 4(b) is the transmission of the downlink traffic load.
  • the uplink traffic load sent by the subscriber station will be transmitted to the WiMAX base station via the WLAN radio interface and the IP connection between the access point device and the base station.
  • the WiMAX subscriber station sequentially encrypts the uplink traffic load to be transmitted using the WiMAX key and the WLAN key, and in step S405, the encrypted uplink traffic load is performed through the WLAN radio interface.
  • An access point device that is sent to the WLAN system.
  • step S410 after receiving the encrypted uplink traffic load, the access point device decrypts the received uplink traffic load by using the WLAN key, and in step S415, the decrypted uplink is performed.
  • the traffic load is forwarded to the WiMAX base station over the IP connection.
  • step S420 the WiMAX base station decrypts the uplink traffic load from the access point device using the WiMAX key. It can be seen that the uplink traffic load transmitted through the WLAN radio interface is double-encrypted, and the uplink traffic load transmitted through the IP connection is encrypted only once.
  • the downlink traffic load transmitted by the WiMAX base station will be transmitted to the WiMAX subscriber station through the IP connection between the base station and the WLAN access point device and the WLAN radio interface.
  • the WiMAX base station encrypts the downlink traffic load to be transmitted using the WiMAX key, and passes the encrypted downlink traffic load through the IP in step S435.
  • the access point device encrypts the received downlink traffic load using the WLAN key, and transmits the encrypted downlink traffic load to the WiMAX subscriber station through the WLAN wireless interface in step S445.
  • step S450 the WiMAX subscriber station sequentially decrypts the received downlink traffic load using the WLAN key and the WiMAX key. It can be seen that, similar to the uplink traffic load, the downlink traffic load transmitted through the IP connection is encrypted only once, and the downlink traffic load transmitted through the WLAN radio interface is double-encrypted.
  • the method for accessing the WiMAX subscriber station of the WiMAX system in this embodiment can overcome the problem of low frequency and efficiency caused by different coverage of the WiMAX system and the WLAN system in the prior art, thereby effectively improving the problem. Spectrum efficiency of unlicensed bands.
  • the WiMAX subscriber station is located within the coverage of a WLAN system, the traffic load between the WiMAX subscriber station and the WiMAX base station can be wirelessly connected through the WLAN system.
  • the port and the IP connection between the access point device of the WLAN system and the WiMAX base station are transmitted.
  • the traffic load transmitted through the WiMAX wireless interface is greatly reduced, and the channel occupation time required for WiMAX transmission is also significantly reduced, thereby saving
  • the wireless resources can be used simultaneously by multiple WLAN systems to improve spectral efficiency.
  • the WiMAX subscriber station performs authentication/key exchange/registration through the WiMAX radio interface, and the uplink and downlink traffic load of the WiMAX subscriber station is encrypted by the WiMAX key, the WiMAX subscriber is compared with the conventional WLAN access method. Station has higher security
  • the WiMAX subscriber station When a WiMAX subscriber station determines that it is not within the coverage of a WLAN system, the WiMAX subscriber station transmits the traffic load directly to the WiMAX base station via the WiMAX radio interface. In this case, the uplink and downlink traffic load is encrypted only once, that is, using the WiMAX key for encryption.
  • FIG 5 is a schematic diagram of a method of using the embodiment of Figure 2 in the case where a WiMAX system and a plurality of WLAN systems coexist. The details are described below in conjunction with the drawings.
  • WiMAX subscriber stations SS1-SS5 can alternatively be in WiMAX mode and WLAN mode. jobs.
  • WiMAX subscriber stations SS1-SS5 communicate with WiMAX base stations via WiMAX radio interfaces to perform downlink channel synchronization, uplink and downlink channel parameter acquisition, initial ranging, basic capability negotiation, authentication, key exchange and registration, etc. Network access and initialization operations. Then, by scanning the channels of the unlicensed band, WiMAX subscriber stations SS1, SS2, and SS4 determine that they are within the coverage of WLAN 1, WLAN 2, and WLAN 3, respectively, and notify the WiMAX base station. WiMAX subscriber stations SS3 and SS5 are not located within the coverage of any WLAN system.
  • the WiMAX base station establishes an IP connection with the access point (AP) devices of WLAN 1, WLAN 2, and WLAN 3, respectively.
  • the WiMAX subscriber stations SSI, SS2, and SS4 are switched to the WLAN mode, and respectively access the AP devices of the WLAN system in which they are located to obtain the WLAN key.
  • the WiMAX subscriber stations SS1, SS2 and SS4 are sequentially encrypted using the previously obtained WiMAX key and WLAN key, and then passed The WLAN radio interfaces are respectively sent to the AP devices of WLAN 1, WLAN 2, and WLAN 3.
  • each AP device decrypts using the WLAN key and forwards it to the WiMAX base station through the IP connection.
  • the WiMAX base station decrypts using the WiMAX key for the received uplink traffic load.
  • the WiMAX base station For the downlink traffic load to be transmitted, for example, the downlink traffic load sent to the WiMAX subscriber station SS1, the WiMAX base station encrypts using the WiMAX key and forwards it to the AP device of the WLAN 1 through the IP connection.
  • the AP device After receiving the downlink traffic load, the AP device encrypts using the WLAN key and sends it to the WiMAX subscriber station SSI through the WLAN radio interface.
  • the WiMAX subscriber station SSI then sequentially decrypts the received downlink traffic load using the WLAN key and the WiMAX key.
  • WiMAX subscriber stations SS3 and SS5 use the WiMAX key to encrypt the uplink traffic load to be transmitted and send it directly to the WiMAX base station via the WiMAX radio interface, which then uses the WiMAX key for decryption.
  • the WiMAX base station encrypts the downlink traffic load using the WiMAX key and sends it to the WiMAX subscriber stations SS3 and SS5 over the WiMAX radio interface, and then the WiMAX subscriber stations SS3 and SS5 use the WiMAX key for decryption.
  • the four WLAN systems do not overlap each other.
  • the method of this embodiment is equally applicable if there are overlapping of multiple WLAN systems, wherein the WiMAX subscriber station can select the WLAN system with the best signal quality when determining the WLAN system in which it is located.
  • Figure 6 is a schematic block diagram of a WiMAX subscriber station in accordance with one embodiment of the present invention.
  • the present embodiment will be described in detail below with reference to the drawings, and the description of the same portions as those of the previous embodiment will be appropriately omitted.
  • the WiMAX subscriber station 600 includes: a gateway 601 for transmitting and receiving wireless signals, a WiMAX access device 602 for accessing a WiMAX base station, and a location determining device 603. For determining whether the WiMAX subscriber station is located in a WLAN system; a WLAN access device 604, an access point device for accessing the WLAN system; and an encryption and decryption device 605 for accessing the WiMAX subscriber station and the WLAN system
  • the traffic load transmitted between the access point device or the WiMAX base station is encrypted and decrypted.
  • the WiMAX subscriber station 600 When the WiMAX subscriber station 600 is to access the WiMAX system, it first accesses the WiMAX base station through the WiMAX access device 602.
  • the downlink synchronization unit 6021 establishes synchronization of the downlink channel through channel search.
  • the uplink and downlink parameter obtaining unit 6022 acquires parameters of the uplink and downlink channels.
  • the ranging unit 6023 performs initial ranging by transmitting a ranging request (RNG-REQ) message to the WiMAX base station and receiving a ranging response (RNG-RSP) message, and the basic capability negotiation unit 6024 transmits/receives the basic capability request/ The acknowledgment (SBC-REQ/SBC-RSP) message is used to negotiate basic capabilities with the WiMAX base station.
  • RNG-REQ ranging request
  • RNG-RSP ranging response
  • SBC-REQ/SBC-RSP The acknowledgment
  • the authentication and key exchange unit 6025 authenticates the WiMAX subscriber station 600 with the WiMAX base station and acquires the WiMAX key.
  • the authenticated WiMAX subscriber station 600 registers with the base station via registration unit 6026.
  • WiMAX subscriber station 600 enables access to WiMAX base stations.
  • the WiMAX subscriber station 600 determines by location determining device 603 whether it is within a certain WLAN.
  • location determining means 603 channel scanning and interception are first performed by the channel scanning and listening unit, and then the power judging unit judges whether there is a signal transmitted by the access point device of a certain WLAN system on the channel being monitored. And whether the power of the signal exceeds a predetermined power threshold.
  • the location determining unit determines that the WiMAX subscriber station 600 is located within the coverage of the WLAN system.
  • the notification unit notifies the WiMAX base station that the WiMAX subscriber station 600 can access the WLAN system and the information of the WLAN system. If the power of the signal from the access point device on the scanned channel is less than the predetermined power threshold, the location determining unit determines that the WiMAX subscriber station 600 is not within the coverage of any WLA system.
  • the WiMAX subscriber station 600 accesses the access point device of the WLAN system via the WLAN access device 604.
  • the channel scanning unit 6041 detects whether the channel is idle and accesses the idle channel using the CSMA/CA mechanism.
  • the WLAN authentication unit 6042 authenticates the WiMAX subscriber station 600 with the access point device, and the WLAN key exchange unit 6043 exchanges the WLAN key with the access point device.
  • the user station 600 WiMAX encryption and decryption by the transmitted traffic load for encryption and decryption apparatus 605, and the traffic load transmission through the transceiver 601 and the WiMAX access point or base station.
  • the encryption unit 6051 sequentially doubles the uplink traffic load to be transmitted using the WiMAX key and the WLAN key. Encrypted, then transmitted by the transceiver 601 to the access point device of the WLAN system for the double encrypted uplink traffic load; for the downlink traffic load received by the transceiver 601 from the access point device, the decryption unit The 6052 uses the WLAN key and the WiMAX key to decrypt it sequentially.
  • the encryption unit 6051 encrypts only the uplink traffic load to be transmitted using the WiMAX key, and then the transceiver 601 transmits the single-encrypted uplink traffic load to the WiMAX base station; for the downlink traffic load from the WiMAX base station, the decryption unit 6052 decrypts using only the WiMAX key.
  • Figure 7 is a schematic block diagram of a WiMAX base station in accordance with one embodiment of the present invention.
  • the present embodiment will be described in detail below with reference to the accompanying drawings, wherein the description of the same portions as those of the previous embodiment will be appropriately omitted.
  • the WiMAX base station 700 includes: a transceiver 701 for transmitting and receiving signals; and a management control information broadcasting device 702 for transmitting a downlink allocation map (Downlink MAP, DLMAP for short) And a control channel information message such as a Downlink Channel Descriptor (DCD) to establish a synchronization of the downlink channel with the WiMAX subscriber station; an authentication and key exchange apparatus 703 for the WiMAX subscriber station Authenticating and exchanging WiMAX keys for encrypting traffic load; connection establishing means 704 for establishing a connection with an access point device of the WLAN system; and encryption and decryption means 705 for pairing the WiMAX base station and the access point device Or the traffic load transmitted between WiMAX subscriber stations is encrypted and decrypted.
  • a transceiver 701 for transmitting and receiving signals
  • a management control information broadcasting device 702 for transmitting a downlink allocation map (Downlink MAP, DLMAP for short) And a control channel information
  • the base station 700 controls the management of the WiMAX subscriber station access by the management control information broadcast device 702, the authentication and key exchange device 703, and is based on the use of WiMAX.
  • the encryption unit 7051 encrypts the downlink traffic load to be transmitted using the WiMAX key, and the transceiver 701 transmits the encrypted downlink traffic load to the access point through the IP connection (if present).
  • FIG. 8 is a schematic block diagram of an access point device of a WLAN system according to an embodiment of the present invention.
  • the present embodiment will be described in detail below with reference to the drawings, and the description of the same portions as those of the previous embodiment will be appropriately omitted.
  • the access point device 800 includes: a transceiver 801 for transmitting and receiving wireless signals; and an authentication device 802 for authenticating a WiMAX subscriber station by using a WLAN authentication mechanism; Apparatus 803, configured to exchange a WLAN key for encrypting a traffic load in a WLAN system; connection establishing means 804 for establishing a connection with a WiMAX base station; and encryption and decryption means 805 for pairing the access point device and the WiMAX user
  • the traffic load transmitted between the station and the WiMAX base station is encrypted and decrypted.
  • the access point device 800 establishes an IP connection with the WiMAX base station through the connection establishing means 804.
  • the access point device 800 completes the access of the WiMAX subscriber station through the authentication device 802 and the key exchange device 803. Then, the access point device 800 encrypts and decrypts the transmitted traffic load through the encryption and decryption device 805.
  • the encryption/decryption device 805 for the downlink traffic load received by the transceiver device 801 from the base station, the encryption unit 8051 encrypts using the WLAN key, and the encrypted downlink traffic load is transmitted by the transceiver 801 to the WiMAX subscriber station.
  • the decryption unit 8052 decrypts using the WLAN key and transmits the decrypted uplink traffic load to the WiMAX base. Station.
  • the WiMAX subscriber station, the WiMAX base station, the access point device of the WLAN system and various components thereof of the above embodiments may be composed of a semiconductor such as a very large scale integrated circuit or gate array, such as a logic chip, a transistor, or the like, or such as a field.
  • the hardware circuit implementation of the programmable hardware device for programming the gate array, the programmable logic device, and the like can also be implemented by software executed by various types of processors, or by a combination of the above hardware circuits and software.
  • WiMAX subscriber station access method of the WiMAX system the WiMAX subscriber station, the WiMAX base station, and the access point equipment of the WLAN system of the present invention are described in detail by some exemplary embodiments, the above embodiments are not exhaustive. Various changes and modifications can be made by those skilled in the art within the spirit and scope of the invention. Therefore, the invention is not limited by the embodiments, and the scope of the invention is limited only by the appended claims.

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  • Computer Security & Cryptography (AREA)
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Abstract

L'invention concerne un procédé pour une station d'abonné (SS) de World Interoperability for Microwave Access (W IMAX), selon lequel le système WIMAX coexiste avec au moins un système de réseau local sans fil (WLAN) dans des bandes de fréquences exemptes de licence (LE) et la SS WIMAX peut fonctionner en mode WIMAX ou en mode WLAN. Ledit procédé comprend les étapes suivantes: la SS WIMAX accède à une station de base WIMAX (BS); la SS WIMAX détermine si elle se trouve ou pas dans une plage de couverture d'un système WLAN au sein d'au moins un système WLAN; une liaison est établie entre la BS WIMAX et une point d'accès (AP) du système WLAN dans lequel se trouve la SS WIMAX; la SS WIMAX accède au AP; les données utiles de service entre la SS WIMAX et la BS WIMAX sont ensuite transmises par le biais du AP. Ledit procédé améliore considérablement l'efficacité du spectre des bandes de fréquence LE et assure des transmissions de données haute sécurité. L'invention concerne également une SS WIMAX, une BS WIMAX et un AP pour système WLAN.
PCT/CN2009/070625 2009-03-03 2009-03-03 Procédé et appareil pour station d'abonné wimax accédant à un système wimax WO2010099655A1 (fr)

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CN200980157742.2A CN102342063B (zh) 2009-03-03 2009-03-03 WiMAX用户站接入WiMAX系统的方法及相应装置
PCT/CN2009/070625 WO2010099655A1 (fr) 2009-03-03 2009-03-03 Procédé et appareil pour station d'abonné wimax accédant à un système wimax

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CN105027600A (zh) * 2014-01-29 2015-11-04 华为技术有限公司 数据的处理方法和装置

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