WO2008092395A1 - Procédé, système et dispositif de négociation de capacité de localisation dans un réseau wimax - Google Patents

Procédé, système et dispositif de négociation de capacité de localisation dans un réseau wimax Download PDF

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Publication number
WO2008092395A1
WO2008092395A1 PCT/CN2008/070111 CN2008070111W WO2008092395A1 WO 2008092395 A1 WO2008092395 A1 WO 2008092395A1 CN 2008070111 W CN2008070111 W CN 2008070111W WO 2008092395 A1 WO2008092395 A1 WO 2008092395A1
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WIPO (PCT)
Prior art keywords
terminal
positioning
capability
network
asn
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PCT/CN2008/070111
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English (en)
French (fr)
Inventor
Jianyong Li
Yong Xie
Wenliang Liang
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008092395A1 publication Critical patent/WO2008092395A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to the field of communications, and in particular, to a positioning capability negotiation technique in the field of communications.
  • IEEE 802.16 was issued by the Institute of Electrical and Electronics Engineers ("IEEE") in December 2001 to provide the last mile of wireless broadband access in metropolitan area networks.
  • WiMAX Worldwide Interoperability for Microwave Access
  • WiMAX network wireless side wireless AP access technology based on IEEE 802.16d/e standard.
  • the main thing that follows is the IEEE 802.16-2004 (802.16d) standard, which was enacted in July 2004.
  • the IEEE 802.16-2004 (802.16d) standard operating band is 2 GHz to 11 GHz and is a licensed and unlicensed hybrid band.
  • the physical layer of Orthogonal Frequency Division Multiplexing (OFDM) and Orthogonal Frequency Multiple Access (OFDMA) can effectively resist multipath fading. In the case of optimal channel fading, the transmission rate can approach 75 Mbps.
  • OFDM Orthogonal Frequency Division Multiplexing
  • OFDMA Orthogonal Frequency Multiple Access
  • the IEEE 802.16-2004 (802.16d) standard is used for non-line-of-sight point-to-multipoint technology in metropolitan area networks, mainly in the form of fixed and nomadic networks.
  • the IEEE 802.16e in question is added to support simple mobile communication and full mobility. Communication technology.
  • WiMAX mainly includes a mobile station (Mobile Station, referred to as "MS”) / subscriber station (Substation Station, referred to as "SS,”), Access Service Network (ASN) and connection service network. (Connected Service Network, referred to as "CSN”).
  • the ASN is defined as a network function set that provides wireless access services for WiMAX user terminals.
  • the ASN includes a base station (Base Station, referred to as "BS") and an ASN Gate (ASN GateWay abbreviation "ASN-GW”) network element, and an ASN may be Multiple CSNs are shared.
  • BS Base Station
  • ASN GateWay abbreviation "ASN-GW” ASN GateWay abbreviation "ASN-GW”
  • the main functions of the ASN include the functions of the base station and the functions of the ASN-GW.
  • the functions of the base station are: providing L2 connection of the base station and the subscriber station SS/MS, radio resource management, measurement and power control, and compression and encryption of air interface data.
  • the functions of ASN-GW include: proxy function for SS/MS authentication, authorization and accounting functions; network discovery and selection for NSP; relay function for providing L3 information for SS, such as IP address allocation .
  • CSN is defined to provide IP connection services for WiMAX user terminals.
  • the CSN mainly provides the following functions: IP address allocation of SS/MS, Internet access, Authentication, Authorization, Account (“AAA”) proxy (proxy) or monthly service (server), based on User authorization control, ASN to CSN tunnel, WiMAX subscriber billing and inter-operator billing, tunneling between CSNs, ASN switching, and various WiMAX services (such as location-based services) , multimedia multicast and broadcast services, IP multimedia subsystem services).
  • AAA Authentication, Authorization, Account
  • server monthly service
  • the MS/SS is a (mobile) user equipment that the user uses to access the WiMAX network.
  • the R1 interface is a wireless air interface and is mainly defined by IEEE802.16d/e.
  • the remaining interfaces are all wired interfaces.
  • the above describes the WiMAX network.
  • the following describes the wireless positioning technology that is being used more and more widely.
  • LBS Location Based Service
  • a communication system or a third party with the support of certain electronic map information, provides mobile users with call-related or non-call-related services related to their location.
  • the initial application of the mobile location service was the US 911 emergency call.
  • FCC Federal Communications Commission
  • the commercial application of location business has developed rapidly in recent years.
  • the SPWG Service Provider Working Group
  • the main technical problem to be solved by the embodiments of the present invention is to provide a method, system and device for negotiating a positioning capability in a WiMAX network, so that the WiMAX network can select an appropriate positioning method according to the positioning capability of the terminal.
  • an embodiment of the present invention provides a positioning capability negotiation method in a WiMAX network, including the following steps: A network entity accessing a service network ASN receives the terminal from a terminal or a network entity that connects to the serving network CSN The positioning capability related information; after receiving the positioning capability related information of the terminal, the network entity of the access service network ASN saves the positioning capability related information.
  • the embodiment of the present invention further provides a positioning capability negotiation system in a WiMAX network, which includes a terminal device and a network entity of the ASN, where the terminal device includes: a first notification module, configured to notify the location information about the positioning capability of the device Network entity
  • the network entity of the ASN includes: a storage module, configured to save the location capability related information after receiving the location capability related information of the terminal.
  • An embodiment of the present invention further provides a terminal device, including:
  • the first notification module is configured to notify the network entity of the ASN of its own location capability related information.
  • the embodiment of the present invention further provides a network entity that accesses the service network, and includes: a storage module, configured to save the location capability related information after receiving the location capability related information of the terminal device.
  • the WiMAX network can select an appropriate positioning method according to the positioning capability of the terminal, and ensure that the positioning control function entity on the network side can determine before acquiring a certain positioning method. Knowing the positioning methods and positioning capabilities supported by the other party, and selecting a suitable positioning method that can meet the positioning service quality requirements and supported by the terminal, avoids unnecessary signaling interaction process and saves communication resources.
  • the implementation of terminal location usually requires the assistance of the service ASN, so it is more appropriate to save the terminal location capability by the device in the service ASN.
  • FIG. 1 is a schematic diagram of a WiMAX network architecture according to the prior art
  • FIG. 2 is a flow chart of a method for negotiating a positioning capability in a WiMAX network according to a first embodiment of the present invention
  • FIG. 3 is a flow chart of a method for negotiating a positioning capability in a WiMAX network according to a second embodiment of the present invention
  • FIG. 4 is a flow chart of a method for negotiating a positioning capability in a WiMAX network according to a third embodiment of the present invention.
  • FIG. 5 is a flow chart of a method for negotiating a positioning capability in a WiMAX network according to a fourth embodiment of the present invention.
  • FIG. 6 is a flow chart of a method for negotiating a positioning capability in a WiMAX network according to a fifth embodiment of the present invention.
  • Figure ⁇ is a flow chart of a positioning capability negotiation method in a WiMAX network according to a sixth embodiment of the present invention.
  • FIG. 8 is a diagram showing an active state terminal moving to another ASN-GW according to a tenth embodiment of the present invention. Flow chart of the positioning capability negotiation method;
  • FIG. 9 is a flowchart of a method for transmitting positioning capability related information of a terminal when the terminal enters an idle state according to an eleventh embodiment of the present invention.
  • FIG. 10 is a flowchart of a method for transmitting positioning related information when a terminal enters an active state from an idle state according to an eleventh embodiment of the present invention
  • FIG. 11 is a flowchart of a positioning capability negotiation method in which a terminal switches to a target ASN-GW according to a twelfth embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of a positioning capability negotiation system in a WiMAX network according to a fifteenth embodiment of the present invention.
  • Figure 13 is a diagram showing the information about the terminal positioning capability acquired by the new anchor PC from the original anchor PC in accordance with the eleventh embodiment of the present invention.
  • the location capability information is used to locate the terminal. Therefore, this capability information should normally be stored in the location where the ASN's location control is located, which is convenient for the location controller to use the information.
  • the positioning controller may be released. In order to use the information when the terminal exits the idle mode, the positioning control information can be saved to the Anchor PC/LR, and the information is returned to the positioning control after the terminal exits the idle mode. In the device.
  • the positioning capability information of the terminal may be located in an entity of the other ASN of the terminal, such as an anchor ASN-GW (Anchor DPF or Anchor Authentictor), and sends a message to these entities to obtain corresponding when the positioning controller needs it. information.
  • an anchor ASN-GW Anchor DPF or Anchor Authentictor
  • the entity or ASN-GW in the corresponding ASN that stores the positioning capability information referred to in the following description follows the above description.
  • the terminal needs to pass the media access control ("MAC") layer message, the L3 (layer 3) message, or establish the terminal and the ASN network.
  • the high-level connection between the entities sends their own location capability related information to the network entity of the ASN, such as the ASN-GW where the location controller is located (usually the service ASN-GW).
  • the network side may reply to the information about the positioning capability of the network side or the intersection of the positioning capability of the network side and the positioning capability of the terminal by using a corresponding response message. There are several ways to do this:
  • the terminal sends the location capability related information of the terminal to the network entity (ie, the service ASN-GW) as part of the message in the SBC-REQ message. Then, after receiving the SBC-REQ message, the network entity (service ASN-GW) includes the location capability related information of the network or the intersection information of the network location capability and the location capability of the terminal in the SBC-RSP (terminal basic capability response). In the feedback to the terminal. Thereby completing the capability negotiation between the terminal and the network.
  • the SBC-REQ and SBC-RSP messages carry positioning capability related information through an extension field.
  • the terminal sends the location capability related information of the terminal to the network entity (service ASN-GW) as part of the message in the REG-REQ message. Then, after receiving the REG-REQ message, the network entity (serving ASN-GW) includes the location capability related information of the network or the intersection information of the location capability of the network and the location capability of the terminal in the REG-RSP (Registration Response). Feedback to the terminal. Thereby completing the capability negotiation between the terminal and the network.
  • the REG-REQ and REG-RSP messages carry positioning capability related information through the extended field.
  • the terminal sends the location capability related information of the terminal to the network entity (service ASN-GW) through the L3 message in the ISF (Service Initial Flow) channel. Then, after receiving the L3 message, the network entity (Service ASN-GW) informs the terminal network of the location capability related information or the intersection information of the network location capability and the location capability of the terminal through the reply message. Thereby completing the capability negotiation between the terminal and the network.
  • the location capability related information is carried in the extended field.
  • the "MO-LR (mobile station origination-location request)" location request message sent by the terminal to the network entity (serving ASN-GW) carries the location capability related information of the terminal, and then the network entity (service ASN-GW)
  • the feedback message of the reply carries information about the positioning capability of the network or the intersection of the positioning capability of the network and the positioning capability of the terminal. Thereby completing the capability negotiation between the terminal and the network.
  • the location capability related information is carried in the extended field.
  • the network entity (serving ASN-GW) carries the location capability related information of the network or the intersection information of the location capability of the network and the location capability of the terminal in the reply message. Thereby completing the capability negotiation between the terminal and the network.
  • the network entity After receiving the information about the location capability of the terminal, the network entity (the service ASN-GW) saves the information about the location capability.
  • the service ASN-GW organizes the reply, and then feeds back to the terminal through the BS, the information about the positioning capability supported by the network or the intersection of the positioning capability of the network and the positioning capability of the terminal.
  • the ASN-GW can also obtain the positioning capability related information of the terminal from the network entity of the connection service network (CSN), and the following methods are specifically:
  • the terminal stores the positioning capability related message of the terminal in the authentication, authorization, and charging of the CSN network by carrying the positioning capability related message of the terminal in the access authentication message.
  • the AAA server sends the location capability related message of the terminal to the ASN-GW, or the AAA server sends the location capability related message of the terminal to the location server, where the location server passes A separate message is sent to the ASN-GW by the positioning capability related message of the terminal, or the positioning server sends the positioning capability related message of the terminal to the ASN-GW by using the positioning request message.
  • the terminal directly sends the positioning capability related message to the positioning server through the application layer message, and the positioning server sends the positioning capability related message of the terminal to the ASN-GW through a separate message, or the positioning server locates in the terminal.
  • the location capability related message of the terminal is sent to the ASN-GW by using a location request message.
  • the ASN-GW can also be sent from an AAA server or terminal data.
  • the information about the positioning capability of the terminal is obtained in the memory, and the specific information is as follows: First, the positioning capability related information of the terminal is saved in the AAA server or the terminal data register; then, in the process of the terminal entering the network or performing the positioning, the positioning server is The AAA service period or the terminal data register obtains the location capability related information of the terminal, and sends the location capability related information of the terminal to the ASN-GW.
  • the positioning capability related information of the terminal may include: a supported positioning method, a positioning related capability, and an estimated round trip delay.
  • RTD Red Trip Delay
  • RSSI Received Signal Strength Indicator
  • the positioning method and the positioning related capability include: an Observed Time Difference Of Arrival (OTDOA) method, a terminal-based OTDOA method, a terminal-assisted global positioning system GPS method, a terminal-based GPS method, and a tradition. GPS method.
  • OTDOA Observed Time Difference Of Arrival
  • the positioning capability information of the network includes the supported positioning methods and positioning related capabilities, and the positioning methods and positioning related capabilities include: Observed Time Difference Of Arrival (OTDOA) method, terminal-based OTDOA method, terminal Auxiliary GPS GPS method, terminal-based GPS method, and traditional GPS method.
  • OTDOA Observed Time Difference Of Arrival
  • the location-related information of the terminal is transmitted between the network entities to ensure that the current service ASN-GW of the terminal obtains the location-related information of the terminal, and the information about the positioning capability supported by the current network or The intersection information with the positioning capability of the terminal is notified to the terminal.
  • the positioning capability related information of the terminal is stored in the serving ASN-GW, and each time the terminal moves to a different ASN-GW, the positioning capability related information of the terminal is transmitted to the new serving ASN-GW through the context delivery message. If the location capability related information of the terminal is also stored in the Anchor ASN-GW, each time the terminal moves to a different ASN-GW, When the terminal context information is requested from the Anchor ASN-GW, the location capability related information of the terminal is brought to the new service ASN-GW through the context information of the terminal.
  • the new serving ASN-GW can inform the terminal about the positioning capability information of the local ASN-GW through the extended RNG-RSP (Ranging Response) message; Or interacting with the terminal to locate the capability related information through the SBC or REG process; or interacting with the positioning capability related information between the terminal and the new service ASN-GW through the L3 message in the ISF channel; thereby letting the terminal know the current network Information about the supported positioning capabilities or the intersection with the positioning capabilities of the terminal.
  • RNG-RSP anging Response
  • the target ASN-GW when the terminal is switched to the target ASN-GW, the target ASN-GW obtains the positioning capability related information of the terminal by using the terminal information request message for requesting the context, and informs the terminal of the positioning capability of the local ASN-GW by the BS.
  • Related Information if the BS does not yet know the location capability related information of the target ASN-GW, it needs to perform the request and information exchange of the location capability related information between the BS and the target ASN-GW.
  • the BS sends an SBC-RSP/REG-RSP message to the terminal, and includes the positioning capability related information of the target ASN-GW or the intersection information with the positioning capability of the terminal, to inform the terminal of the positioning capability supported by the current network.
  • Corresponding information or performing the interaction of the positioning capability related information by carrying the positioning capability related information of the network or the intersection information with the positioning capability of the terminal in the RNG-RSP (Ranging Response) message; or passing the L3 message in the ISF channel Perform interaction of information related to positioning capabilities.
  • RNG-RSP Rastering Response
  • the new anchor PC acquires the location capability related information of the terminal from the original anchor PC. After the terminal transitions from the idle state to the active state, the anchor Anchor PC transmits the saved location capability related information of the terminal to the current serving ASN-GW of the terminal. That is, if the outside world starts to call the terminal, in order to allow the terminal and the new service ASN-GW to Knowing the location-related capability information of the other party as soon as possible, and completing the interaction of the location capability related information in the process of re-entering the network, the PC tells the new service ASN-GW about the location capability of the terminal, and then the BS passes the MAC in the process of the terminal accessing the network. Layer messages, such as RNG-RSP/SBC-RSP/REG-RSP, etc., or L3 messages to inform the terminal about the location capability of the network.
  • Layer messages such as RNG-RSP/SBC-RSP/REG-RSP, etc., or L3 messages to inform the terminal about the location capability of the network.
  • the RNG-RSP message is used for notification in the periodic ranging process of the terminal, or is notified in a MAC layer message or an L3 message, or by establishing the terminal and the current service of the terminal.
  • the response message indicates that an error occurs or does not return a corresponding response message, so that the terminal determines that the current network side does not have the positioning capability, for example, Said that, if the terminal informs the positioning capability related information of the local terminal on the network side through the "MOLR" positioning request message (a type of L3 message) or the re-entry or REG-REQ/SBC-REQ message, the network side indicates an error by returning a response message. Or not returning a corresponding response message, so that the terminal determines that the network side does not have the positioning capability;
  • the notification is performed by the extended RNG-RSP message, or after the terminal is turned into the active state, the message at the MAC layer or L3 The message is notified in the message, or the message is transmitted in the high-level connection established between the terminal and the current serving ASN-GW, and the notification is made.
  • the information about the location capability after the change is notified to the network side. For example, after the terminal accesses the network, the terminal has a new capability through online update. At this time, the terminal needs to notify the network side about the positioning capability information that the terminal has. So that the network can select the appropriate positioning method for the terminal to meet the quality of service requirements of the positioning service.
  • the methods that the terminal can use are as follows: The positioning capability of the terminal carrying the L3 information through the ISF channel The information is transmitted, or the message carrying the positioning capability related information is transmitted through the high-level connection established between the current serving ASN-GW and the terminal, or is sent to the network side when the terminal initiates the "MOLR" positioning request. If the terminal can initiate re-entry after updating the capability, the capability of the terminal can be sent to the network side through a signaling process such as SBC-REQ/REG-REQ when re-entering the network.
  • the above is described by taking the ASN network entity as the serving ASN-GW.
  • the network entity of the ASN may also be the anchor ASN-GW. If the terminal sends its own location capability related information to the anchor ASN-GW and does not send it to the serving ASN-GW, the anchor ASN-GW needs to send the positioning capability related information of the terminal to the serving ASN-GW.
  • the first embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, and the specific process is shown in FIG. 2.
  • the terminal notifies the network side of the positioning capability information of the terminal itself through the SBC-REQ message sent during the network access process.
  • the extension manner is as follows: The different different bits of the extended bit are used to represent different positioning capabilities, and the specific value of each bit is used to indicate the support of the corresponding positioning capability. No (such as 0 means no support, 1 means support), the terminal's own positioning capability related information is sent to the network side through the SBC-REQ message in the network access process.
  • the positioning capability related information includes supported positioning methods and positioning related capabilities (such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method), The ability to estimate round-trip delay RTD, the ability to support or not report measurement results in idle state, the ability to support the location request notification process, the ability to support RSSI measurements, and the ability to support CINR measurements, resulting in more negotiation of location capabilities Complete and comprehensive.
  • the positioning methods and positioning related capabilities such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method
  • the ability to estimate round-trip delay RTD the ability to support or not report measurement results in idle state
  • the ability to support the location request notification process the ability to support RSSI measurements
  • the ability to support CINR measurements resulting in more negotiation of location capabilities Complete and comprehensive.
  • the BS notifies the service ASN-GW about the location capability related information of the terminal by interacting with the message between the serving ASN-GW. If the location capability information of the ASN-GW is not yet served on the BS, the location capability of the service ASN-GW is also obtained through message interaction. Information.
  • the positioning capability related information of the service ASN-GW includes supported positioning methods and positioning related capabilities, such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS The method makes the negotiation of positioning ability more complete and comprehensive.
  • the BS carries the positioning capability related information of the serving ASN-GW in the SBC-RSP message.
  • each extended different bit is used to indicate different positioning capabilities, and the specific value of each bit is used to indicate whether the corresponding positioning capability is supported or not (eg, 0) Not supported, 1 means support), the information about the location capability of the network side is sent to the terminal through the SBC-RSP message.
  • the information carried in the SBC-RSP message may be all the information about the positioning capability supported by the network side, and may also be the intersection information of the positioning capability supported by the network side and the positioning capability supported by the terminal.
  • the positioning control function entity and/or the terminal on the network side decides to send a positioning request message to the other party, or decides to acquire a certain positioning.
  • the positioning method and the positioning capability supported by the other party can be known, so that a suitable positioning method capable of meeting the positioning service quality requirement and supported by the terminal is selected, or the terminal requiring the positioning can support the requested positioning method at the network side entity. In the case of the location request is initiated, the unnecessary signaling interaction process is avoided, and communication resources are saved.
  • the network side and the terminal can obtain the positioning capability of the other party more quickly.
  • a second embodiment of the present invention relates to a method for negotiating a positioning capability in a WiMAX network, and the specific process is shown in FIG.
  • the terminal notifies the network side of the positioning capability information of the terminal itself by sending the extended REG-REQ message during the network access process.
  • the BS informs the serving ASN-GW about the location capability related information of the terminal by interacting with the message between the serving ASN-GW. If the positioning capability related information of the ASN-GW is not yet available on the BS, the positioning capability related information of the serving ASN-GW is also obtained through message interaction.
  • the BS transmits the positioning capability related information of the network side to the terminal by using the extended REG-RSP message.
  • the present embodiment is substantially the same as the first embodiment, except that in the first embodiment, the terminal and the network side perform the positioning capability by the interaction of the extended SBC-REQ/SBC-RSP signaling message.
  • the negotiation of the positioning capability is performed by the interaction of the extended REG-REQ/REG-RSP signaling messages.
  • the interaction of positioning capabilities eliminates the need for additional signaling processes and saves system resources.
  • the positioning capability negotiation between the terminal and the network side in the WiMAX network is implemented, so that the positioning control function entity and/or the terminal on the network side decides to send a positioning request message to the other party, or decides to acquire a certain positioning method.
  • the positioning method and the positioning capability supported by the other party can be known, so that a suitable positioning method capable of meeting the positioning service quality requirement and supported by the terminal can be selected, or the terminal requiring positioning can have the positioning method supported by the network side entity.
  • the positioning request is initiated, which avoids the unnecessary signaling interaction process and saves communication resources.
  • the signaling interaction of the REG-REQ/REG-RSP is also performed during the network access process of the terminal. Therefore, the network side and the terminal can also obtain the positioning capability of the other party more quickly.
  • a third embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, and the specific process is as shown in FIG.
  • the terminal carries the positioning related capability message supported by the terminal in the L3 message sent by the ISF channel.
  • the extended different bits are used to indicate different positioning capabilities, and the specific value of each bit is used to indicate whether the corresponding positioning capability is supported or not (eg, 0 means no) Support, 1 means support), the terminal's own positioning capability related information is sent to the network side through the L3 message.
  • positioning ability Relevant information includes supported positioning methods and positioning related capabilities (such as terminal assisted observations arrival time difference)
  • OTDOA method terminal-based OTDOA method, terminal-assisted global positioning system (GPS) method, terminal-based GPS method, traditional GPS method), ability to estimate round-trip delay RTD, support or not support the ability to report measurement results in idle state
  • GPS global positioning system
  • RTD round-trip delay
  • the serving ASN-GW carries the positioning capability related information of the serving ASN-GW through the L3 message in the ISF channel.
  • the extended different bits are used to indicate different positioning capabilities, and the specific value of each bit is used to indicate whether the corresponding positioning capability is supported or not (eg, 0 means not supported). , 1 indicates support), and the information about the location capability of the network side is sent to the terminal through the L3 message.
  • the positioning capability related information includes a positioning method and a positioning related capability, such as a terminal assisted observation time difference OTDOA method, a terminal-based OTDOA method, a terminal assisted global positioning system GPS method, a terminal-based GPS method, and a conventional GPS method.
  • a positioning method such as a terminal assisted observation time difference OTDOA method, a terminal-based OTDOA method, a terminal assisted global positioning system GPS method, a terminal-based GPS method, and a conventional GPS method.
  • the information carried in the L3 message may be all the related positioning capability related information on the network side, or may be the intersection information of the positioning capability supported by the network side and the positioning capability supported by the terminal.
  • the terminal determines that the current service ASN-GW does not have the location capability.
  • the positioning capability negotiation between the terminal and the network side is implemented by using the L3 message, so that the positioning control function entity and/or the terminal on the network side decides to send a positioning request message to the other party, or decides to acquire a certain Before a positioning method, the positioning method and the positioning capability supported by the other party can be known, thereby selecting a suitable positioning method capable of meeting the positioning service quality requirement and supported by the terminal, or the terminal requiring the positioning can have the support requested by the network side entity. In the case of the positioning method, the positioning request is initiated, the unnecessary signaling interaction process is avoided, and communication resources are saved.
  • a fourth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, and a specific flow The process is shown in Figure 5.
  • step 510 after the network access process, the terminal establishes a high-level connection between the terminal and the serving ASN-GW dedicated to transmitting a message including location capability related information.
  • the process proceeds to step 520, the terminal sends a location capability notification message to the service ASN-GW, and the location capability notification message carries the location capability related information of the terminal.
  • the positioning capability notification message is used to indicate different positioning capabilities, and the specific value of each bit is used to indicate whether the corresponding positioning capability is supported or not (eg, 0 means no support, 1 indicates support), and the positioning capability information of the terminal itself is sent to the network side through the positioning capability notification message.
  • the positioning capability related information includes supported positioning methods and positioning related capabilities (such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method), The ability to estimate the round-trip delay RTD, the ability to support or not support measurement results in idle state, the ability to support the location request notification process, the ability to support RSSI measurements, and the ability to support CINR measurements, resulting in more negotiation of location capabilities For completeness and comprehensiveness.
  • the positioning methods and positioning related capabilities such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method.
  • the serving ASN-GW carries the positioning capability related information of the network side or the intersection information of the positioning capability of the network side and the positioning capability of the terminal in the positioning capability reply message.
  • each different bit in the reply message is used to indicate different positioning capabilities, and the specific value of each bit is used to indicate whether the corresponding positioning capability is supported or not (eg, 0 means no support, 1 means support).
  • the information about the location capability of the network side is sent to the terminal through the reply message.
  • the positioning capability related information includes a positioning method and a positioning related capability, such as a terminal assisted observation time difference OTDOA method, a terminal-based OTDOA method, a terminal assisted global positioning system GPS method, a terminal-based GPS method, and a conventional GPS method.
  • a positioning method such as a terminal assisted observation time difference OTDOA method, a terminal-based OTDOA method, a terminal assisted global positioning system GPS method, a terminal-based GPS method, and a conventional GPS method.
  • all the supported positioning capability related information carried by the network side may be carried in the reply message, or may be the intersection of the positioning capability supported by the network side and the positioning capability supported by the terminal. Set information.
  • the terminal can determine that the current service ASN-GW does not have the positioning capability.
  • the service ASN-GW of the terminal and the network side can directly establish a high-level connection in the WiMAX network
  • the information can be transmitted through the high-level connection to interactively locate the capability-related information, which is the positioning capability between the terminal and the network side in the WiMAX network.
  • Negotiation provides another way to achieve it.
  • a fifth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, and a specific process is shown in FIG. 6.
  • step 610 after the network access process, the terminal establishes a high-level connection between the terminal and the serving ASN-GW dedicated to transmitting a message containing location-related information.
  • the serving ASN-GW sends a positioning capability request message to the terminal, and carries the positioning capability related information of the message in the message.
  • the serving ASN-GW may send a positioning capability request message to the terminal before deciding which positioning method to retrieve, or may select to request the positioning capability from the terminal immediately after the terminal enters the network, where the positioning capability request message carries the network side.
  • Information about the positioning capabilities The positioning capability request message uses the specific digits of each bit to indicate the support of the corresponding positioning capability by using different bits in the message to indicate different positioning capabilities (eg, 0 means no support, 1 means Support)) Notifying the terminal of information about the positioning capability on the network side.
  • the positioning capability related information includes a positioning method and a positioning related capability, such as a terminal assisted observation time difference OTDOA method, a terminal-based OTDOA method, a terminal assisted global positioning system GPS method, a terminal-based GPS method, and a conventional GPS method.
  • a positioning method such as a terminal assisted observation time difference OTDOA method, a terminal-based OTDOA method, a terminal assisted global positioning system GPS method, a terminal-based GPS method, and a conventional GPS method.
  • the terminal sends a response message of the location capability request message to the service ASN-GW, and carries the location capability related information of the terminal in the message. Specifically, by using different bits in the response message to indicate different positioning capabilities, specific values of each bit are used to indicate whether the corresponding positioning capability is supported or not (eg, 0 indicates no support, 1 The support location information is sent to the network side by using the response message.
  • the positioning capability related information includes supported positioning methods and positioning related capabilities (such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method), The ability to estimate the round-trip delay RTD, the ability to support or not support measurement results in idle state, the ability to support the location request notification process, the ability to support RSSI measurements, and the ability to support CINR measurements, resulting in more negotiation of location capabilities For completeness and comprehensiveness.
  • the positioning methods and positioning related capabilities such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method.
  • a sixth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, and a specific process is shown in FIG.
  • the terminal notifies the network side of the positioning capability information of the terminal itself through the "MOLR (mobile originate location request)" message. Specifically, when the terminal sends the "MOLR" location request message, in addition to the normal location request message content, the terminal notifies the network side of the positioning capability information of the terminal by extending the "MOLR" location request message ( The content of the implementation and the positioning capability information of the terminal are the same as those of the first embodiment, and are not described here.
  • the BS informs the service ASN-GW about the positioning capability of the terminal through the message interaction.
  • step 730 the BS and the service ASN-GW perform a subsequent process of "MOLR" positioning and message interaction.
  • the BS notifies the terminal of the positioning capability related information on the network side through the extended "MOLR" positioning response message.
  • the implementation and the location-related information on the network side contain the same content as the first embodiment, and will not be described here.
  • the network reply message indicates an error or does not reply, it indicates that the network does not support positioning.
  • the seventh embodiment of the present invention relates to a method for locating a location capability in a WiMAX network, which is specifically: First, the terminal notifies the AAA server of the location capability information of the terminal itself by using an authentication message sent in the network access process, where the location capability is related.
  • Information includes supported positioning methods and positioning related capabilities (eg terminal assisted observation time difference OTDOA method, terminal based) OTDOA method, terminal-assisted global positioning system GPS method, terminal-based GPS method, traditional GPS method), ability to estimate round-trip delay RTD, ability to support or not support measurement results in idle state, notification request notification process
  • the support capabilities, the ability to support RSSI measurements, and the ability to support CINR measurements make the negotiation of location capabilities more complete and comprehensive.
  • the AAA server sends the received location-related information of the terminal to the ASN-GW, or the AAA server sends the received location-related information of the terminal to the location server.
  • the location server sends the location-related information of the terminal to the ASN-GW.
  • the specific method is as follows: A separate message is sent to the ASN-GW by the positioning capability related message of the terminal, or the positioning server sends the positioning capability related message of the terminal to the ASN-GW by using the positioning request message.
  • the authentication message is a message flow that needs to be performed by the terminal and the network side, the interaction of the positioning capability can be performed without an additional message flow, which saves system resources. Moreover, since the authentication message is transmitted during the network access process of the terminal, the network side can obtain the positioning capability related information of the terminal more quickly.
  • the eighth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, which is specifically: First, the terminal directly sends a positioning capability related message to the positioning server by using an application layer message, where the positioning capability related information includes a supported positioning method and Positioning related capabilities (such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method), estimated round trip delay RTD capability, support or not
  • Positioning related capabilities such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method
  • estimated round trip delay RTD capability support or not
  • the ability to report measurement results in idle state, the ability to support the location request notification process, the ability to support RSSI measurements, and the ability to support CINR measurements make the negotiation of location capabilities more complete and comprehensive.
  • the positioning server sends the positioning capability related information of the terminal to the ASN-GW, where the specific method is: the positioning server sends the positioning capability related message of the terminal by using a separate message.
  • the ASN-GW is sent to the ASN-GW, or the positioning server sends a positioning capability related message of the terminal to the ASN-GW by using a positioning request message.
  • the ninth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, which is specifically: First, the positioning capability related information of the terminal is stored in an AAA server or a terminal data register, and the specific method is: pre-associating the positioning capability of the terminal The information is added to the AAA server or the terminal data register, specifically, the positioning capability related information of the terminal is added to a profile field in the terminal information, where the positioning capability related information includes a supported positioning method and a positioning related capability ( Such as terminal assisted observation time difference OTDOA method, terminal based OTDOA method, terminal assisted global positioning system GPS method, terminal based GPS method, traditional GPS method), estimated round trip delay RTD capability, support or not supported in idle state
  • OTDOA method terminal assisted observation time difference
  • terminal based OTDOA method terminal assisted global positioning system GPS method
  • terminal based GPS method traditional GPS method
  • estimated round trip delay RTD capability support or not supported in idle state
  • the positioning server obtains the positioning capability related information of the terminal from the AAA server or the terminal data register.
  • the positioning server sends the received terminal location capability related information to the ASN-GW.
  • the tenth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network.
  • the present embodiment further provides a situation in which an active state terminal moves to another ASN-GW based on the foregoing embodiments, and the specific process is shown in FIG. 8. Shown.
  • step 810 when the active terminal moves from the original ASN-GW2 (ie, the original serving ASN-GW) to another ASN-GW1 (ie, the mobile service ASN-GW), it passes to the ASN- A BS under GW1 initiates an RNG-REQ (Ranging Request) message and accesses the BS.
  • ASN-GW2 ie, the original serving ASN-GW
  • ASN-GW1 ie, the mobile service ASN-GW
  • the process proceeds to step 820, the BS notifies the ASN-GW1 that there is a new terminal access, and if the location capability related information of the ASN-GW1 is not obtained on the BS, the ASN-GW1 may be requested to be related to the positioning capability of the ASN-GW1. information. It should be noted that if the location capability related information of the ASN-GW1 is stored in the anchor ASN-GW, the BS may also request the anchor ASN-GW. ASN-GWl positioning capability related information.
  • the ASN-GW2 transmits the location capability related information of the terminal to the new ASN-GW1 through the terminal context request delivery message. It should be noted that, if the positioning capability related information of the terminal is stored in the anchor ASN-GW, the anchor ASN-GW may also transmit the location capability related information of the terminal to the new ASN through the terminal context request delivery message. GW 1 in.
  • the BS by extending the RNG-RSP message, carries the positioning capability related information of the network in the RNG-RSP message, and informs the terminal about the positioning capability related information of the ASN-GW1; or through the extended SBC- The RSP, the REG-RSP message, or the L3 message in the ISF channel informs the terminal about the location capability of the ASN-GW1.
  • the content of the information about the locating capability of the existing signaling message and the information about the locating capability of the network side are the same as those of the first embodiment, and are not described here.
  • the present embodiment further improves the negotiation process of the positioning capability between the terminal and the network side, so that the positioning control function entity and/or the terminal on the network side decides to send a positioning request message to the other party, or decides to capture the message.
  • the positioning method and the positioning capability supported by the other party can be known, the unnecessary signaling interaction process is avoided, and communication resources are saved.
  • An eleventh embodiment of the present invention relates to a method for negotiating a positioning capability in a WiMAX network.
  • the present embodiment further provides a situation in which an active state terminal enters an idle state and then enters an active state from an idle state. The specific processes are shown in Figure 9 and Figure 10, respectively.
  • FIG. 9 is a flow chart of information about the positioning capability of the terminal when the terminal enters the idle state.
  • the ASN DPF ASN Data Channel Function
  • Relay PC Relay
  • the paging controller sends a DREG-REQ (de-register) message.
  • the ASN DPF/Relay PC sends a "terminal info request" (terminal information request) message to the Anchor DPF/PC (the anchor DPF/PC) to which the terminal belongs, and carries the positioning capability related information of the terminal in the message. .
  • the Anchor DPF/PC receives the "terminal info request" message.
  • the terminal context is saved, the context includes information about the location capability of the terminal, and the "terminal info response" message is replied to the ASN DPF/Relay PC.
  • step 940 the ASN DPF/Relay PC replies to the DREG-RSP (Deregistration Response) message to the terminal, and the terminal enters an idle state.
  • DREG-RSP Deregistration Response
  • the new anchor PC acquires the information about the terminal positioning capability from the original anchor PC. For example, the new anchor PC sends the request message to the original anchor PC to obtain the terminal location capability related information; or, the original anchor PC directly sends the terminal location capability related information to the new anchor PC, as shown in FIG. Shown.
  • step 1010 when the idle terminal moves to a different ASN-GW, when it is externally paged or voluntarily withdraws itself In idle mode, the terminal sends a REG-REQ message to the ASN DPF/Relay PC.
  • the ASN DPF/Relay PC sends an "IM Exit MS state Change Request" message to the Anchor PC to which the terminal belongs.
  • the anchor PC carries the positioning capability related information of the terminal in the "IM Exit MS state Change Response" message.
  • the ASN DPF/Relay PC carries the network-side positioning capability related information in the message such as the REG-RSP or other MAC layer message sent to the terminal or the ISF in the subsequent network re-entry process.
  • the location-related capability information of the side is notified to the terminal.
  • the present embodiment further provides a situation in which the active state terminal enters the idle state and then enters the active state from the idle state, thereby perfecting the negotiation process of the positioning capability between the terminal and the network side, so that the network side positioning control function entity and / or the terminal decides to send a positioning request message to the other party, or can determine the positioning method and positioning capability supported by the other party before deciding to acquire a certain positioning method, thereby avoiding unnecessary signaling interaction flow and saving communication resources.
  • a twelfth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, On the basis of the foregoing embodiments, the method for the terminal to switch to the target ASN-GW is provided, and the negotiation process of the positioning capability between the terminal and the network side is further improved.
  • the target ASN-GW when the terminal switches to the target ASN-GW, the target ASN-GW requests the context of the terminal from the original serving ASN-GW through the "terminal information request" message, and At this time, the positioning capability related information of the terminal is obtained.
  • the request and information exchange of the location capability related information of the target ASN-GW may also be required between the target BS and the target ASN-GW.
  • the target BS actively sends the extended SBC-RSP/REG-RSP message in the network re-entry process, and carries the positioning capability related information of the target ASN-GW in the message to inform the terminal of the positioning capability supported by the network side. Or the terminal is notified by carrying the positioning capability related information of the target ASN-GW in the extended RNG-RSP message; or by performing the interaction of the positioning capability related information in the ISF.
  • a thirteenth embodiment of the present invention relates to a method for negotiating a positioning capability in a WiMAX network, and the present embodiment provides a case where a network is migrated based on the above-described respective embodiments.
  • the network side can notify by one of the following methods:
  • the RNG-RSP message is used for notification in the periodic ranging process of the terminal, or is notified in a MAC layer message or an L3 message, or by establishing the terminal and the current service of the terminal.
  • the network side If the network side does not have the location capability, after receiving the location capability information of the terminal, the network responds to the message indicating that the error occurs or does not return a corresponding response message, notifying the terminal that the changed network side does not have the positioning capability (for example, If the terminal informs the positioning capability related information of the local terminal on the network side through the "MOLR" positioning request message or the re-entry or REG-REQ/SBC-REQ message, the network side indicates that an error occurs or does not return a corresponding response message by returning a response message. Inform the terminal that the network side does not have the positioning capability); If the terminal is currently in an idle state, in the process of the terminal transitioning from the idle state to the active state, the interaction message through the periodic location update process of the terminal and the network side, such as the extended
  • the RNG-RSP message is notified, or after the terminal is switched to the active state, the message is notified in the MAC layer message or the L3 message, or the message is transmitted in the high-level connection established between the terminal and the current serving ASN-GW. Notice.
  • the network side needs to notify the terminal of the information about the positioning capability of the changed network side, and ensures the accuracy of the information about the positioning capability of the network side acquired by the terminal.
  • a fourteenth embodiment of the present invention relates to a positioning capability negotiation method in a WiMAX network, and the present embodiment provides a case where a positioning capability of a terminal changes in addition to the above-described respective embodiments.
  • the terminal may have new capabilities (such as location capability) by means of online update.
  • the terminal needs to notify the network side about the location capability related information that the terminal has. Therefore, the network can select a suitable positioning mode for the terminal to meet the service quality requirement of the positioning service.
  • the terminal can be used in the following manner:
  • the L3 information of the ISF channel carries information about the positioning capability of the terminal, or the message carrying the positioning capability related information is transmitted through the high-level connection established between the ASN-GW and the terminal, or is initiated at the terminal.
  • MOLR is sent to the network side when the request is located. If the terminal can initiate re-entry after updating the capability, the capability of the terminal can be sent to the network side through a signaling process such as SBC-REQ/REG-REQ when re-entering the network.
  • a fifteenth embodiment of the present invention relates to a positioning capability negotiation system in a WiMAX network, comprising a network element of a terminal device and an ASN (e.g., service ASN-GW and/or anchor ASN-GW)
  • ASN e.g., service ASN-GW and/or anchor ASN-GW
  • the terminal device includes: a first notification module, configured to notify the network entity of the ASN of the positioning capability related information; and a receiving module, configured to receive the positioning capability related information on the network side.
  • the network entity of the ASN includes: a storage module, configured to: after receiving the location capability related information of the terminal, save the location capability related information; the second notification module is configured to notify the location location related information of the terminal to the other Network entity (such as service ASN-GW, mobile The service ASN-GW, the anchor ASN-GW, the PC, the anchor ASN-GW, or the serving ASN-GW of the terminal notify the location capability related information of the terminal when the terminal moves to another ASN-GW in the active state.
  • the network entity of the ASN includes: a storage module, configured to: after receiving the location capability related information of the terminal, save the location capability related information; the second notification module is configured to notify the location location related information of the terminal to the other Network entity (such as service ASN-GW, mobile The service ASN-GW, the anchor ASN-GW
  • the PC After the mobile terminal ASN-GW of the mobile terminal, the PC transmits the positioning capability related information of the terminal to the current service ASN-GW of the terminal after the terminal changes from the idle state to the active state.
  • the second notification module is further configured to send, to the terminal, location-related information related to the network side, or intersection information between the location capability of the network side and the location capability of the terminal.
  • the base station it is also possible for the base station to send, to the terminal, information about the positioning capability of the network side, or the intersection of the positioning capability of the network side and the positioning capability of the terminal.
  • the base station includes a module for transmitting, after receiving the location capability related information of the terminal, the location capability related information of the network side or the intersection information of the location capability of the network side and the location capability of the terminal to the terminal. And a module for acquiring the positioning capability related information or the intersection information to the network side device without having the positioning capability related information or the intersection information.
  • the positioning capability related information of the terminal device includes one or any combination of the following: a supported positioning method and positioning related capability, an ability to estimate a round-trip delay RTD, an ability to support or not support the measurement result in an idle state, Support capabilities for the location request notification process, the ability to support RSSI measurements, and the ability to support CINR measurements.
  • the positioning capability related information on the network side includes supported positioning methods and positioning related capabilities.
  • the positioning method and the positioning related capability include one or any combination of the following: terminal assisted observation time difference OTDOA method, terminal-based OTDOA method, terminal assisted global positioning system GPS method, terminal-based GPS method, and traditional GPS method.
  • each module in this embodiment is a logic module, and can be physically implemented by one or more physical devices.
  • the positioning capability negotiation between the terminal and the network side in the WiMAX network is implemented, so that the positioning control function entity and/or the terminal on the network side decides to send a positioning request message to the other party, or decides to acquire a certain positioning method.
  • the positioning method and the positioning capability supported by the other party can be known, so that a suitable positioning method capable of meeting the positioning service quality requirement and supported by the terminal can be selected, or the terminal requiring positioning can have the positioning method supported by the network side entity. In this case, the positioning request is initiated, which avoids the unnecessary signaling interaction process and saves communication resources.
  • the terminal or the network side sends its own positioning capability related information to the network entity of the ASN, and the network entity of the ASN receives the information about the positioning capability of the terminal, and saves The positioning capability related information.
  • the WiMAX network can select an appropriate positioning method according to the positioning capability of the terminal, and ensure that the positioning control function entity on the network side can know the positioning method and the positioning capability supported by the other party before deciding to acquire a certain positioning method, thereby selecting an appropriate one.
  • the positioning method capable of meeting the quality requirements of the positioning service and supported by the terminal avoids the unnecessary signaling interaction process and saves communication resources.
  • the implementation of terminal location usually requires the assistance of the service ASN. Therefore, it is more appropriate to save the terminal location capability by the device in the service ASN.
  • the terminal may send its own positioning capability related information to the network entity of the ASN through a message of the MAC layer, an L3 message, or a high-level connection between the terminal and the network entity of the ASN. This enables flexible positioning of the positioning capability between the terminal and the network side in a WiMAX network.
  • the positioning capability information of the terminal includes one or any combination of the following: supported positioning method and positioning related capability, ability to estimate round-trip delay RTD, ability to support or not support measurement in idle state, request for positioning The ability to support the notification process.
  • the negotiation of the positioning capability between the terminal and the network side is more complete and comprehensive, further avoiding unnecessary signaling interaction processes and saving communication resources.
  • the information about the positioning capability of the terminal is transmitted to the new ASN-GW or the target ASN-GW through information exchange between the network-side entities.
  • the negotiation process of the positioning capability between the terminal and the network side is further improved.
  • the service ASN-GW may also reply to the terminal with the location capability related information of the network side, or the intersection information of the location capability of the network side and the location capability of the terminal (may also be sent by the base station). ).
  • the terminal can obtain the positioning capability on the network side, so that the network side entity has the positioning method supported by the network, and the positioning request is initiated, which avoids unnecessary signaling interaction process and saves communication resources.
  • the location-related information is used to ensure the accuracy of the information about the localization capability of the local end obtained by the peer.

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Description

微波接入全球互通网络中定位能力协商方法、 系统和设备 技术领域
本发明涉及通信领域, 特别涉及通信领域中的定位能力协商技术。
背景技术
IEEE802.16 是电子和电气工程师协会 ( Institute of Electrical and Electronics Engineers, 简称 "IEEE" ) 于 2001年 12月颁布的, 用于在城域网 中提供最后一公里无线宽带接入的标准。
与此同时, 众多设备和组建供应商组成了微波接入全球互通 (Worldwide Interoperability for Microwave Access, 简称 "WiMAX" )论坛的组织, 其目的 在于通过确保宽带无线接入设备的兼容性和互操作性, 加快基于上述 IEEE802.16 系列标准的宽带无线网络的部署。 因此, 在通常情况下, 将应用 802.16系列标准中规定的实现无线宽带接入的系统称为 WiMAX系统。
WiMAX网络无线侧 于 IEEE 802.16d/e标准的无线城域网接入技术。 现在主要遵循的是 2004年 7月制定的 IEEE 802.16-2004( 802.16d )标准。 IEEE 802.16-2004 ( 802.16d )标准工作频段是 2GHz到 11GHz, 是授权和非授权的 混合频段。 采用正交频分复用 ( Orthogonal Frequency Division Multiplexing, 简称 "OFDM" )和正交频分多址接入 ( Orthogonal Frequency Multiple Access, 简称 "OFDMA" ) 的物理层, 能有效的抗多径衰落。 最佳信道衰落情况下, 传输速率可以逼近 75Mbps。 IEEE 802.16-2004 ( 802.16d )标准用于城域网中 的非视距点对多点技术, 主要是固定和游牧网络的形式, 正在讨论的 IEEE 802.16e中加入了支持简单移动通信和全移动通信的技术。
图 1示出了 WiMAX端到端参考模型。如图可见, WiMAX主要包含移动 台 ( Mobile Station, 简称 "MS" ) /用户站( Subscribe Station, 简称 "SS,,)、 接入服务网络 (Access Service Network , 简称 "ASN" ) 与连接服务网络 ( Connectivity Service Network, 简称 "CSN" )。 ASN定义为为 WiMAX用户终端提供无线接入服务的网络功能集合, ASN 包含了基站 ( Base Station, 简称 "BS" )和 ASN网关(ASN GateWay 简称 "ASN-GW" ) 网元, 一个 ASN可能被多个 CSN共享。
ASN的主要功能包含基站的功能和 ASN- GW的功能。 其中, 基站的功 能有: 提供基站和用户站 SS/ MS的 L2连接、 无线资源管理、 测量与功率控 制和空口数据的压缩与加密。 ASN-GW的功能有: 为 SS/MS认证、 授权和计 费功能提供代理 ( proxy )功能; 支持 NSP的网络发现和选择; 为 SS提供 L3 信息的中继 (Relay ) 功能, 如 IP地址分配。
CSN定义为为 WiMAX用户终端提供 IP连接服务。 CSN主要提供如下功 能: SS/MS的 IP地址分配, Internet接入,验证、授权、计费协议( Authentication, Authorization, Account, 简称 "AAA" ) 代理 ( proxy )或者月良务 ( server ), 基于用户的授权控制, ASN到 CSN的隧道, WiMAX用户的计费以及运营商 之间的结算,漫游情况下 CSN之间的隧道, ASN之间的切换,和各种 WiMAX 服务(如基于位置的业务、 多媒体多播和广播业务、 IP多媒体子系统业务)。
MS/SS为 (移动 )用户设备, 用户使用该设备接入 WiMAX网络。
其中, R1接口为无线空中接口, 主要由 IEEE802.16d/e定义。 其余接口 均为有线接口。
以上对 WiMAX 网络进行了介绍 , 下面对目前被越来越广泛应用的无线 定位技术进行介绍。
无线定位技术的研究始于 20世纪 60年代的自动车辆定位系统, 随后该 技术在公共交通、 出租车调度以及公安追踪等范围内被广泛应用。 后来, 随 着人们对基于位置的信息服务的需求增多, 无线定位技术得到更多研究者的 关注, 全球定位系统(Global Position System, 简称 "GPS" )的出现更使得无 线定位技术产生了质的飞跃,定位精度得到大幅度的提高,可达到 10 米以内。
随着移动通信产业的发展, 业务的创新已经成为网络和技术发展的根本 推动力。 同时, 新业务的运营模式正在发生变化, 健康的价值链则是新业务 发展的基本保证。 目前, 话音业务仍是移动通信业务的主体, 各种新型移动 增值业务和移动数据业务则是移动通信市场强劲的经济增长点。 移动通信领 域是近年来竟争最激烈的行业之一, 运营商越来越需要差异性的业务来提高 竟争力, 位置业务(Location Services, 简称 "LCS" )是被普遍看好的一种移 动增值业务, 并将会获得迅速的发展。
虽然直接利用 GPS可以达到一种较为理想的定位效果, 但是他需要专门 的接收设备, 对大多数用户来说并不是很方便。 近年来, 随着蜂窝移动系统 的普及, 定位技术开始用于蜂窝系统设计、 切换、 服务区确定、 交通监控等 方面。
基于位置的业务(Location Based Service, 简称 "LBS" ), 又称移动位置 业务或定位业务, 是指移动网络通过特定的定位技术获取用户终端的地理位 置信息(经纬度坐标), 提供给用户本人、 通信系统或第三方, 并借助一定的 电子地图信息的支持, 为移动用户提供与其位置相关的、 呼叫或非呼叫类业 务。 移动位置业务最初的应用为美国 911紧急呼叫。 1996年 6月, 美联邦通 信委员会(FCC )要求各移动运营商必须能够提供所有呼叫 911号码的用户的 位置信息。 位置业务的商业应用于近几年发展较快, 美国、 日本和韩国的许 多运营商如 SPRINT, AT&T Wireless, NTT DoCoMo, KDDI, J-Phone, SKT, KTF, H3G等已经开始了移动位置业务的商用。 欧洲也已经开展了基于小区 的定位业务, 如 E-plus, Orange。 我国的两大移动运营商也正在积极地部署各 自的移动定位业务, 其中釆用 GPSone的联通 CDMA定位业务也已经开始运 营。 预计在未来几年内, 我国的移动定位业务市场规模将会呈现出加速度的 持续增长。
早期部署的 2G 系统中已经可以提供简单的基于位置的服务, 目前随着 3G网络的商用进程的加快, 位置业务将可以依托 3G网络的宽带、 高速的特 性, 变得更加丰富多彩。 按照日本 NTT DOCOMO无线增值业务的发展曲线, 数据业务的 5%将与定位业务有关。 在 3G网络中, 日本和英国的某些公司提供的定位业务都可以为用户提供 详细、 实时更新的数字地图来告知用户的具体位置, 并且可以通过电子地图 来引导用户寻找酒店、 餐厅、 商店和其它一些用户感兴趣的商业设施。
目前, 在第三代合作伙伴项目 ( 3rd Generation Partnership Project, 简称 "3GPP" )和 3GPP2中对于定位方法中的终端与网络的定位能力协商都有了 明确和完善的流程, 能够使得网络或终端在决定向对方发送定位请求之前能 够知道对方有无相关定位能力, 从而可以根据对方支持的能力选择合适的定 位方法, 或者直接拒绝向不具备定位能力的对端发送定位请求消息, 减少定 位过程中的异常和无谓的等待。
虽然在 WiMAX网络系统中, SPWG (服务提供商工作组 )协议也要求支 持对用户进行定位 , 但目前尚未提出一种在 WiMAX 网络中终端与网络进行 定位能力协商的方法。
发明内容
本发明各实施方式要解决的主要技术问题是提供一种 WiMAX 网络中定 位能力协商方法、 系统和设备, 使得 WiMAX 网络能够根据终端的定位能力 选择合适的定位方法。
为解决上述技术问题, 本发明的实施方式提供了一种 WiMAX 网络中定 位能力协商方法, 包含以下步骤: 接入服务网络 ASN的网络实体从终端或者 连接服务网络 CSN的网络实体中接收所述终端的定位能力相关信息; 所述接 入服务网络 ASN的网络实体收到所述终端的定位能力相关信息后, 保存该定 位能力相关信息。
本发明的实施方式还提供了一种 WiMAX 网络中定位能力协商系统, 包 含终端设备和 ASN的网络实体, 所述终端设备包含: 第一通知模块, 用于将 自身的定位能力相关信息通知给所述网络实体;
所述 ASN的网络实体包含: 存储模块, 用于在收到所述终端的定位能力 相关信息后, 将该定位能力相关信息进行保存。 本发明的实施方式还提供了一种终端设备, 包含:
第一通知模块,用于将自身的定位能力相关信息通知给 ASN的网络实体。 本发明的实施方式还提供了一种接入服务网络的网络实体, 包含: 存储模块, 用于在收到终端设备的定位能力相关信息后, 将该定位能力 相关信息进行保存。
本发明实施方式与现有技术相比, 主要效果在于, WiMAX网络能够根据 终端的定位能力选择合适的定位方法, 保证了网络侧的定位控制功能实体在 决定釆取某一种定位方法之前, 能够知晓对方所支持的定位方法和定位能力, 从而选择合适的能够满足定位服务质量要求并且终端支持的定位方法, 避免 了无谓的信令交互流程,节约了通信资源。终端定位的实现通常需要服务 ASN 的协助, 所以由服务 ASN中的设备保存终端定位能力比较合适。
附图说明
图 1是根据现有技术中 WiMAX网络架构示意图;
图 2是根据本发明第一实施方式的 WiMAX网络中定位能力协商方法流 程图;
图 3是根据本发明第二实施方式的 WiMAX网络中定位能力协商方法流 程图;
图 4是根据本发明第三实施方式的 WiMAX网络中定位能力协商方法流 程图;
图 5是根据本发明第四实施方式的 WiMAX网络中定位能力协商方法流 程图;
图 6是根据本发明第五实施方式的 WiMAX网络中定位能力协商方法流 程图;
图 Ί是根据本发明第六实施方式的 WiMAX网络中定位能力协商方法流 程图;
图 8是根据本发明第十实施方式中激活态的终端移动到其它 ASN-GW下 的定位能力协商方法流程图;
图 9是根据本发明第十一实施方式中终端进入空闲态时该终端的定位能 力相关信息传递方法流程图;
图 10是根据本发明第十一实施方式中终端从空闲态进入激活态时定位能 力相关信息传递方法流程图;
图 11是根据本发明第十二实施方式中终端切换到目标 ASN-GW下的定 位能力协商方法流程图;
图 12是根据本发明第十五实施方式的 WiMAX网络中定位能力协商系统 结构示意图;
图 13是根据本发明第十一实施方式中新的锚点 PC从原锚点 PC获取终 端定位能力相关信息的示意图。
具体实施方式
为使本发明实施方式的目的、 技术方案和优点更加清楚, 下面将结合附 图对本发明实施方式作进一步地详细描述。 在具体描述之前, 先对 ASN中保 存终端能力信息的实体进行一下说明。 一般情况, 定位能力信息是为定位终 端所服务的, 所以这个能力信息通常情况下应该保存在 ASN的定位控制所在 的位置, 方便定位控制器使用这些信息; 另外, 在终端进入空闲模式的时候, 定位控制器可能会被释放, 为了在终端退出空闲模式的时候, 还可以使用这 些信息, 定位控制信息可以被保存到 Anchor PC/LR中, 在终端退出空闲模式 后在把这些信息回复到定位控制器中。 当然, 并不排除终端的定位能力信息 可以位于终端其他 ASN的实体中,比如锚点 ASN-GW( Anchor DPF或 Anchor Authentictor ) 中, 在定位控制器需要的时候发送消息到这些实体中获取相应 的信息。 以下描述所指的对应的保存这些定位能力信息的 ASN 中的实体或 ASN-GW都遵从上面的描述。
在本发明实施方式中,终端需要通过媒体接入控制( Media Access Control, 简称 "MAC" )层的消息、 L3 (层 3 ) 消息、 或建立该终端与 ASN的网络实 体之间的高层连接, 将自身的定位能力相关信息发送到 ASN的网络实体中, 如定位控制器所在的 ASN-GW (—般为服务 ASN-GW )。 网络侧可以通过相 应的响应消息, 回复网络侧的定位能力相关信息或网络侧的定位能力与该终 端的定位能力的交集信息。 具体有以下几种方式:
( 1 )终端通过在 SBC-REQ消息中将终端的定位能力相关信息作为消息 一部分发往网络实体(即服务 ASN-GW )。 然后网络实体(服务 ASN-GW ) 在收到了 SBC-REQ消息之后,将网络的定位能力相关信息或网络的定位能力 与该终端的定位能力的交集信息, 包含在 SBC-RSP (终端基本能力响应) 中 反馈给终端。从而完成终端和网络之间的能力协商。该 SBC-REQ和 SBC-RSP 消息通过扩展字段携带定位能力相关信息。
( 2 )终端通过在 REG-REQ消息中将终端的定位能力相关信息作为消息 一部分发往网络实体(服务 ASN-GW )。 然后网络实体(服务 ASN-GW )在 收到了 REG-REQ消息之后,将网络的定位能力相关信息或网络的定位能力与 该终端的定位能力的交集信息, 包含在 REG-RSP (注册响应)中反馈给终端。 从而完成终端和网络之间的能力协商。 该 REG-REQ和 REG-RSP消息通过扩 展字段携带定位能力相关信息。
( 3 )终端在 ISF (业务初始流)通道中通过 L3消息中将终端的定位能力 相关信息发往网络实体(服务 ASN-GW )。 然后网络实体(服务 ASN-GW ) 在收到了此 L3消息之后,通过回复消息告知终端网络的定位能力相关信息或 网络的定位能力与该终端的定位能力的交集信息。 从而完成终端和网络之间 的能力协商。 定位能力相关信息携带在扩展的字段中。
( 4 )终端向网络实体(服务 ASN-GW )发送的 "MO-LR (移动台发起- 定位请求)" 定位请求消息中携带终端的的定位能力相关信息, 然后网络实体 (服务 ASN-GW )在回复的反馈消息中携带网络的定位能力相关信息或网络 的定位能力与该终端的定位能力的交集信息。 从而完成终端和网络之间的能 力协商。 定位能力相关信息携带在扩展的字段中。 ( 5 )在网络实体(服务 ASN-GW )和终端之间建立一个用于传输携带定 位能力相关信息消息的高层连接, 通过这个连接, 终端将包含定位能力相关 信息发往网络实体(服务 ASN-GW )。 然后网络实体(服务 ASN-GW )在回 复消息中携带网络的定位能力相关信息或网络的定位能力与该终端的定位能 力的交集信息。 从而完成终端和网络之间的能力协商。
网络实体(服务 ASN-GW )收到终端的定位能力相关信息后, 对该定位 能力相关信息进行保存。
需要说明的是,如果是通过 SBC过程或 REG过程交互定位能力相关信息, 则当 BS收到了携带终端的定位能力相关信息的消息之后,需要巴该终端的定 位能力相关信息告知服务 ASN-GW, 服务 ASN-GW组织回复, 再通过 BS把 网络支持的定位能力相关信息或网络的定位能力与该终端的定位能力的交集 信息, 反馈给终端。
在本发明的实施方式中, ASN-GW还可以从连接服务网络(CSN ) 的网 络实体获得终端的定位能力相关信息, 具体有以下几种方式:
( 1 )终端在接入网络的认证过程中, 通过在接入认证消息中携带所述终 端的定位能力相关消息, 把所述终端的定位能力相关消息保存在 CSN网络的 验证、 授权、 计费协议(AAA )服务器中, 所述 AAA服务器将该终端的定位 能力相关消息发送到 ASN-GW中, 或者所述 AAA服务器将该终端的定位能 力相关消息发送到定位服务器中, 所述定位服务器通过单独的消息将终端的 定位能力相关消息发送给 ASN-GW, 或者所述定位服务器在终端定位的过程 中, 通过定位请求消息将所述述终端的定位能力相关消息发送给 ASN-GW。
( 2 ) 终端通过应用层消息直接将其定位能力相关消息发送给定位服务 器, 所述定位服务器通过单独的消息将终端的定位能力相关消息发送给 ASN-GW, 或者所述定位服务器在终端定位的过程中, 通过定位请求消息将 所述述终端的定位能力相关消息发送给 ASN-GW。
在本发明的实施例中, ASN-GW还可以从 AAA服务器或者终端数据寄 存器中获得终端的定位能力相关信息, 其具体为: 首先, 在 AAA服务器或者 终端数据寄存器中保存终端的定位能力相关信息; 然后, 在所述终端入网或 者进行定位的过程中,定位服务器从所述 AAA服务期或者终端数据寄存器中 获得终端的定位能力相关信息, 并将所述终端的定位能力相关信息下发给 ASN-GW。
在上述 ASN-GW获取终端的定位能力相关信息过程中, 所述终端的定位 能力相关信息可以包含: 支持的定位方法和定位相关能力、 估算往返时延
( Round Trip Delay , 简称 "RTD" )的能力、 支持或不支持在空闲态时报告测 量结果的能力、 对定位请求通知流程的支持能力、 支持 RSSI(Received Signal Strength Indicator 接收信号强调指示)测量的能力 、 支持 CINR
( Carrier-to-Interference-and-Noise Rate 载干比)测量的能力。 其中, 定位方 法和定位相关能力包含: 终端辅助观测到达时间差( Observed Time Difference Of Arrival, 简称 "OTDOA" )方法、 基于终端的 OTDOA方法、 终端辅助全 球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
网络的定位能力相关信息包含支持的定位方法和定位相关能力, 定位方 法和定位相关能力包含: 终端辅助观测到达时间差( Observed Time Difference Of Arrival, 简称 "OTDOA" )方法、 基于终端的 OTDOA方法、 终端辅助全 球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
当终端发生移动后, 该终端的定位能力相关信息通过在网络实体间的传 递, 保证该终端当前的服务 ASN-GW获得该终端的定位能力相关信息, 并将 当前网络支持的定位能力相关信息或与该终端的定位能力的交集信息, 通知 给该终端。
比如说, 终端的定位能力相关信息保存在服务 ASN-GW中, 每次终端移 动到不同的 ASN-GW之后, 通过上下文传递消息将该终端的定位能力相关信 息传递给新的服务 ASN-GW。 如果该终端的定位能力相关信息还保存在 Anchor (锚点) ASN-GW, 则每一次该终端移动到不同的 ASN-GW之后, 在向 Anchor ASN-GW请求终端上下文信息的时候,通过终端的上下文信息将 该终端的定位能力相关信息带给新的服务 ASN-GW。 激活态下的终端移动到 新的服务 ASN-GW下后, 新的服务 ASN-GW 可以通过经扩展的 RNG-RSP (测距响应) 消息, 告知终端关于本 ASN-GW的定位能力相关信息; 或者通 过 SBC或 REG过程与该终端交互定位能力相关信息;或者在 ISF通道中通过 L3消息进行终端和新的服务 ASN-GW之间的定位能力相关信息的交互;以此 来让终端知道当前网络支持的定位能力相关信息或与该终端的定位能力的交 集信息。
再比如说, 终端在切换到目标 ASN-GW下时, 目标 ASN-GW通过用于 请求上下文的终端信息请求消息获得终端的定位能力相关信息,并通过 BS告 知该终端本 ASN-GW的定位能力相关信息。 在此过程中, 如果 BS暂时还不 知道目标 ASN-GW的定位能力相关信息,则需要在 BS和目标 ASN-GW之间 进行定位能力相关信息的请求和信息交换。 BS 通过主动向终端发送 SBC-RSP/REG-RSP消息, 在该消息中包括目标 ASN-GW的定位能力相关信 息或与该终端的定位能力的交集信息, 来告知该终端当前网络支持的定位能 力相关信息; 或者通过在 RNG-RSP (测距响应)消息中携带网络的定位能力 相关信息或与该终端的定位能力的交集信息, 进行定位能力相关信息的交互; 或者在 ISF通道中通过 L3消息进行定位能力相关信息的交互。
在终端与网络侧进行定位能力相关信息的交互之后, 如果终端从激活态
( active )转为空闲态 (idle ), 则网络侧将该终端的定位能力相关信息保存至 寻呼控制器( Paging Controller , 简称 "PC" ) , 当终端在空闲态下, 从一个 PC 管理下的一个寻呼区域移动到另一个寻呼区域下的时候, 如果发生了 Anchor
(锚点) PC的迁移 (relocation )过程, 则新的锚点 PC向原来的锚点 PC获 取终端的定位能力相关信息。 在该终端从空闲态转为激活态后, 锚点 Anchor PC将保存的该终端的定位能力相关信息传送给该终端当前的服务 ASN-GW。 也就是说, 如果外间开始呼叫该终端, 为了让该终端和新的服务 ASN-GW能 够尽快地知道对方的定位相关能力信息, 在重新入网的过程中完成定位能力 相关信息的交互, PC告诉新的服务 ASN-GW关于终端的定位能力相关信息, 然 后 BS 通 过 终 端 入 网 过 程 中 的 MAC 层 消 息 , 如 RNG-RSP/SBC-RSP/REG-RSP等,或 L3消息来告知终端关于网络的定位能力 相关信息。
当网络发生迁移后, 特别是服务 ASN-GW有了变化之后, 需要将网络侧 的定位能力相关信息重新下发给终端, 具体可通过以下几种方式:
如果终端当前处于激活态, 则在该终端的周期性测距过程中通过 RNG-RSP消息进行通知,或在 MAC层的消息或 L3消息中进行通知,或通过 建立该终端与该终端当前的服务 ASN-GW之间的高层连接, 进行通知;
如果网络侧不具备定位能力, 则在收到终端的定位能力相关信息后, 通 过返回响应消息指示出现错误或不返回相应的响应消息, 以便让该终端判断 出当前网络侧不具备定位能力, 比如说, 如终端通过 "MOLR" 定位请求消 息(L3消息的一种 )或者重新入网或 REG-REQ/SBC-REQ消息通知网络侧本 终端的定位能力相关信息, 网络侧通过返回响应消息指示出现错误或不返回 相应的响应消息, 使得该终端判断得出网络侧不具备定位能力;
如果终端当前处于空闲态, 则在该终端从空闲态转为激活态的过程中, 通过经扩展的 RNG-RSP消息进行通知, 或在该终端转为激活态后, 在 MAC 层的消息或 L3消息中进行通知, 或在终端与当前的服务 ASN-GW之间建立 的高层连接中传输消息, 进行通知。
如果终端的定位能力相关信息发生改变, 则将改变后的定位能力相关信 息通知给网络侧。 比如说, 终端在接入网络之后, 通过在线更新的方式, 使 得终端具有了新的能力。 此时终端需要通知网络侧关于本终端具有的定位能 力相关信息。 以便于网络可以针对终端进行合适的定位方式选择, 以满足定 位业务的服务质量需求。
终端可以釆用的方式有: 通过 ISF通道的 L3信息携带终端的定位能力相 关信息, 或者通过当前的服务 ASN-GW与终端之间建立的高层连接传输携带 有定位能力相关信息的消息, 或者在终端发起 "MOLR"定位请求的时候发送 给网络侧。 如果终端在更新了能力之后, 可以发起重新入网, 则该终端的能 力就可以通过重新入网时候的 SBC-REQ/REG-REQ 等信令过程发送到网络 侧。
以上是以 ASN的网络实体为服务 ASN-GW为例进行说明的, ASN的网 络实体还可以是锚点 ASN-GW。 如果终端将自身的定位能力相关信息发送到 锚点 ASN-GW, 而没有发送到服务 ASN-GW, 则该锚点 ASN-GW需要将该 终端的定位能力相关信息发送到服务 ASN-GW。
下面通过各实施方式, 对以上描述的各种情况分别进行具体说明。
本发明的第一实施方式涉及 WiMAX 网络中定位能力协商方法, 具体流 程如图 2所示。
在步骤 210中, 终端通过在入网过程中发送的 SBC-REQ消息, 将本终端 自身的定位能力相关信息通知给网络侧。 具体地说, 通过对 SBC-REQ消息进 行扩展, 扩展方式如下: 将扩展的各个不同比特位用于表示不同的定位能力, 将其中各个比特位的具体数值用于表示相应的定位能力的支持与否 (如 0表 示不支持, 1表示支持), 将终端自身的定位能力相关信息通过在入网过程中 的 SBC-REQ消息发送给网络侧。 其中, 定位能力相关信息包含支持的定位方 法和定位相关能力 (如终端辅助观测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传 统 GPS方法)、 估算往返时延 RTD的能力、 支持或不支持在空闲态时报告测 量结果的能力、 对定位请求通知流程的支持能力、 支持 RSSI测量的能力、 支 持 CINR测量的能力, 使得定位能力的协商更为完整和全面。
接着, 进入步骤 220, BS通过与服务 ASN-GW之间的消息交互, 通知服 务 ASN-GW关于终端的定位能力相关信息。 如果 BS上还没有服务 ASN-GW 的定位能力相关信息, 则也通过消息交互获得服务 ASN-GW的定位能力相关 信息。 服务 ASN-GW的定位能力相关信息包含支持的定位方法和定位相关能 力, 如终端辅助观测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法, 使得定位能力的协商更为完整和全面。
接着, 进入步骤 230 , BS在 SBC-RSP消息中携带服务 ASN-GW的定位 能力相关信息。 同样地, 通过对 SBC-RSP消息进行扩展, 将扩展的各个不同 比特位用于表示不同的定位能力, 将其中各个比特位的具体数值用于表示相 应的定位能力的支持与否 (如 0表示不支持, 1表示支持), 将网络侧的定位 能力相关信息通过 SBC-RSP消息发送给终端。
需要说明的是, 在 SBC-RSP消息中携带的可以是网络侧的所有支持的定 位能力相关信息, 也可以是网络侧支持的定位能力与终端支持的定位能力的 交集信息。
由于 SBC-REQ/SBC-RSP 的信令交互是终端与网络侧需要进行的信令流 程, 因此, 可使得定位能力的交互无需额外的信令流程, 节约了系统资源。 而且由于实现了在 WiMAX 网络中终端与网络侧之间的定位能力协商, 使得 网络侧的定位控制功能实体和 /或终端在决定向对方发送定位请求消息, 或是 在决定釆取某一种定位方法之前, 能够知晓对方所支持的定位方法和定位能 力, 从而选择合适的能够满足定位服务质量要求并且终端支持的定位方法, 或是要求定位的终端能够在网络侧实体具有支持所请求的定位方法的情况下 才发起定位请求, 避免了无谓的信令交互流程, 节约了通信资源。
而且, 由于 SBC-REQ/SBC-RSP 的信令交互是在终端的入网过程中进行 的, 因此, 网络侧与终端能较迅速地获得对方的定位能力。
本发明的第二实施方式涉及 WiMAX 网络中定位能力协商方法, 具体流 程如图 3所示。
在步骤 310中,终端通过在入网过程中发送扩展的 REG-REQ消息,将本 终端自身的定位能力相关信息通知给网络侧。 在步骤 320 中, BS 通过与服务 ASN-GW之间的消息交互, 通知服务 ASN-GW关于终端的定位能力相关信息。 如果 BS上还没有服务 ASN-GW的 定位能力相关信息, 则也通过消息交互获得服务 ASN-GW的定位能力相关信 息。
接着, 进入步骤 330, BS通过扩展的 REG-RSP消息, 将网络侧的定位能 力相关信息发送给终端。
不难发现, 本实施方式与第一实施方式大致相同, 其区别在于, 在第一 实施方式中, 终端与网络侧通过扩展的 SBC-REQ/SBC-RSP信令消息的交互, 进行定位能力的协商, 而在本实施方式中, 通过扩展的 REG-REQ/REG-RSP 信令消息的交互, 进行定位能力的协商。 使得定位能力的交互无需额外的信 令流程, 节约了系统资源。 由于实现了在 WiMAX 网络中终端与网络侧之间 的定位能力协商, 使得网络侧的定位控制功能实体和 /或终端在决定向对方发 送定位请求消息, 或是在决定釆取某一种定位方法之前, 能够知晓对方所支 持的定位方法和定位能力, 从而选择合适的能够满足定位服务质量要求并且 终端支持的定位方法, 或是要求定位的终端能够在网络侧实体具有支持所请 求的定位方法的情况下才发起定位请求, 避免了无谓的信令交互流程, 节约 了通信资源。
而且, REG-REQ/REG-RSP 的信令交互同样也是在终端的入网过程中进 行的, 因此, 网络侧与终端也能较迅速地获得对方的定位能力。
本发明的第三实施方式涉及 WiMAX 网络中定位能力协商方法, 具体流 程如图 4所示。
在步骤 410中, 终端在入网过程之后, 通过 ISF通道中发送的 L3消息中 携带终端支持的定位相关能力消息。 具体地说, 通过对 L3消息进行扩展, 将 扩展的各个不同比特位用于表示不同的定位能力, 将其中各个比特位的具体 数值用于表示相应的定位能力的支持与否 (如 0表示不支持, 1表示支持), 将终端自身的定位能力相关信息通过 L3消息发送给网络侧。 其中, 定位能力 相关信息包含支持的定位方法和定位相关能力 (如终端辅助观测到达时间差
OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法)、 预估往返时延 RTD的能力、 支持或 不支持在空闲态时报告测量结果的能力、 对定位请求通知流程的支持能力、 支持 RSSI测量的能力、 支持 CINR测量的能力, 使得定位能力的协商更为完 整和全面。
接着, 进入步骤 420,服务 ASN-GW在 ISF通道中通过 L3消息携带服务 ASN-GW的定位能力相关信息。 同样地, 通过对 L3消息进行扩展, 将扩展的 各个不同比特位用于表示不同的定位能力, 将其中各个比特位的具体数值用 于表示相应的定位能力的支持与否 (如 0表示不支持, 1表示支持), 将网络 侧的定位能力相关信息通过 L3消息发送给终端。
其中, 定位能力相关信息包含定位方法和定位相关能力, 如终端辅助观 测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位 系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
需要说明的是,在 L3消息中携带的可以是网络侧的所有支持的定位能力 相关信息, 也可以是网络侧支持的定位能力与终端支持的定位能力的交集信 息。
如果服务 ASN-GW没有回复消息或者回复的消息内容指示出现错误, 则 终端判断当前服务 ASN-GW不具备定位能力。
在本实施方式中,通过 L3消息实现了终端与网络侧之间的定位能力协商, 使得网络侧的定位控制功能实体和 /或终端在决定向对方发送定位请求消息, 或是在决定釆取某一种定位方法之前, 能够知晓对方所支持的定位方法和定 位能力, 从而选择合适的能够满足定位服务质量要求并且终端支持的定位方 法, 或是要求定位的终端能够在网络侧实体具有支持所请求的定位方法的情 况下才发起定位请求, 避免了无谓的信令交互流程, 节约了通信资源。
本发明的第四实施方式涉及 WiMAX 网络中定位能力协商方法, 具体流 程如图 5所示。
在步骤 510中, 终端在入网过程之后, 建立终端和服务 ASN-GW之间的 专门用于传送包含定位能力相关信息的消息的高层连接。
接着, 进入步骤 520, 终端向服务 ASN-GW中发送定位能力通知消息, 在该定位能力通知消息中携带该终端的定位能力相关信息。 具体地说, 将该 定位能力通知消息中的各个不同比特位用于表示不同的定位能力, 将其中各 个比特位的具体数值用于表示相应的定位能力的支持与否(如 0表示不支持, 1表示支持), 将终端自身的定位能力相关信息通过该定位能力通知消息发送 给网络侧。
其中, 定位能力相关信息包含支持的定位方法和定位相关能力 (如终端 辅助观测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全 球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法)、 预估往返时 延 RTD的能力、 支持或不支持在空闲态时 告测量结果的能力、 对定位请求 通知流程的支持能力、 支持 RSSI测量的能力、 支持 CINR测量的能力, 使得 定位能力的协商更为完整和全面。
接着, 进入步骤 530, 服务 ASN-GW在定位能力回复消息中携带网络侧 的定位能力相关信息或网络侧的定位能力与该终端的定位能力的交集信息。 同样地, 将该回复消息中的各个不同比特位用于表示不同的定位能力, 将其 中各个比特位的具体数值用于表示相应的定位能力的支持与否 (如 0表示不 支持, 1表示支持), 将网络侧的定位能力相关信息通过该回复消息发送给终 端。
其中, 定位能力相关信息包含定位方法和定位相关能力, 如终端辅助观 测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位 系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
需要说明的是, 在该回复消息中携带的可以是网络侧的所有支持的定位 能力相关信息, 也可以是网络侧支持的定位能力与终端支持的定位能力的交 集信息。
如果服务 ASN-GW没有回复消息或者回复的消息中指示出现错误, 则终 端可以判断得出当前服务 ASN-GW不具备定位能力。
由于在 WiMAX网络中终端和网络侧的服务 ASN-GW可以直接建立高层 连接, 因此可通过在该高层连接中传输消息, 交互定位能力相关信息, 为 WiMAX网络中终端与网络侧之间的定位能力协商提供了另一种实现方式。
本发明的第五实施方式涉及 WiMAX 网络中定位能力协商方法, 具体流 程如图 6所示。
在步骤 610中, 终端在入网过程之后, 建立终端和服务 ASN-GW之间的 专门用于传送包含定位能力相关信息的消息的高层连接。
接着, 进入步骤 620, 服务 ASN-GW向终端发送定位能力请求消息, 并 在该消息中携带自身的定位能力相关信息。 具体地说, 服务 ASN-GW可以在 决定釆取哪一个的定位方法之前向终端发送定位能力请求消息, 也可以在终 端刚入网之后就选择向终端请求定位能力, 定位能力请求消息中携带网络侧 的的定位能力相关信息。 该定位能力请求消息通过将消息中的各个不同比特 位用于表示不同的定位能力, 将其中各个比特位的具体数值用于表示相应的 定位能力的支持与否 (如 0表示不支持, 1表示支持), 将网络侧的定位能力 相关信息通知给终端。
其中, 定位能力相关信息包含定位方法和定位相关能力, 如终端辅助观 测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位 系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
接着, 进入步骤 630, 终端向服务 ASN-GW发送定位能力请求消息的响 应消息, 并在该消息中携带本终端的定位能力相关信息。 具体地说, 通过将 该响应消息中的各个不同比特位用于表示不同的定位能力, 将其中各个比特 位的具体数值用于表示相应的定位能力的支持与否(如 0表示不支持, 1表示 支持), 将终端的定位能力相关信息通过该响应消息发送给网络侧。 其中, 定位能力相关信息包含支持的定位方法和定位相关能力 (如终端 辅助观测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全 球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法)、 预估往返时 延 RTD的能力、 支持或不支持在空闲态时 告测量结果的能力、 对定位请求 通知流程的支持能力、 支持 RSSI测量的能力、 支持 CINR测量的能力, 使得 定位能力的协商更为完整和全面。
本发明的第六实施方式涉及 WiMAX 网络中定位能力协商方法, 具体流 程如图 7所示。
在步骤 710中, 终端通过 "MOLR (移动台发起定位请求 mobile originate location request )"消息将将本终端自身的定位能力相关信息通知给网络侧。具 体地说, 终端在发送 "MOLR" 定位请求消息的时候, 除了正常的定位请求消 息内容之外, 还通过对 "MOLR" 定位请求消息的扩展, 将终端的定位能力 相关信息通知给网络侧 (实现方式以及终端的定位能力相关信息包含的内容 均与第一实施方式相同, 在此不再赘述)。
接着, 进入步骤 720, BS在收到 "MOLR" 消息之后, 通过消息交互告 知服务 ASN-GW关于终端的定位能力。
接着, 在步骤 730中, BS与服务 ASN-GW之间进行 "MOLR" 定位的后 续流程和消息交互。
接着, 进入步骤 740, BS通过经扩展的 "MOLR" 定位响应消息, 将网 络侧的定位能力相关信息通知给终端。 (实现方式以及网络侧的定位能力相 关信息包含的内容均与第一实施方式相同, 在此不再赘述)如果网络回复消 息指示出现错误或者不回复, 则表示网络不支持定位。
本发明的第七实施方式涉及 WiMAX网络中定位能力协商方法, 具体为: 首先, 终端通过在入网过程中发送的认证消息, 将本终端自身的定位能 力相关信息通知 AAA服务器, 其中, 定位能力相关信息包含支持的定位方法 和定位相关能力 (如终端辅助观测到达时间差 OTDOA 方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传 统 GPS方法)、 预估往返时延 RTD的能力、 支持或不支持在空闲态时报告测 量结果的能力、 对定位请求通知流程的支持能力、 支持 RSSI测量的能力、 支 持 CINR测量的能力, 使得定位能力的协商更为完整和全面。
接着, 所述 AAA 服务器将接收到的终端的定位能力相关信息发送给 ASN-GW,或者所述 AAA服务器将将接收到的终端的定位能力相关信息发送 给定位服务器。
当所述 AAA服务器将接收到的终端的定位能力相关信息发送给定位服 务期时, 所述定位服务器将该终端的定位能力相关信息发送给 ASN-GW, 其 具体方法为: 所述定位服务器通过单独的消息将终端的定位能力相关消息发 送给 ASN-GW, 或者所述定位服务器在终端定位的过程中, 通过定位请求消 息将所述述终端的定位能力相关消息发送给 ASN-GW。
由于认证消息是终端与网络侧需要进行的消息流程, 因此, 可使得定位 能力的交互无需额外的消息流程, 节约了系统资源。 而且, 由于认证消息是 在终端的入网过程中传送的, 因此, 网络侧能够较迅速地获得终端的定位能 力相关信息。
本发明的第八实施方式涉及 WiMAX网络中定位能力协商方法, 具体为: 首先, 终端通过应用层消息直接将其定位能力相关消息发送给定位服务 器, 其中, 定位能力相关信息包含支持的定位方法和定位相关能力 (如终端 辅助观测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全 球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法)、 预估往返时 延 RTD的能力、 支持或不支持在空闲态时 告测量结果的能力、 对定位请求 通知流程的支持能力、 支持 RSSI测量的能力、 支持 CINR测量的能力, 使得 定位能力的协商更为完整和全面。
接着, 所述定位服务器将该终端的定位能力相关信息发送给 ASN-GW, 其具体方法为: 所述定位服务器通过单独的消息将终端的定位能力相关消息 发送给 ASN-GW, 或者所述定位服务器在终端定位的过程中, 通过定位请求 消息将所述述终端的定位能力相关消息发送给 ASN-GW。
本发明的第九实施方式涉及 WiMAX网络中定位能力协商方法, 具体为: 首先,在 AAA服务器或者终端数据寄存器中保存终端的定位能力相关信 息, 其具体的方法为: 预先将终端的定位能力相关信息添加到 AAA服务器或 者终端数据寄存器中, 具体是将所述终端的定位能力相关信息添加到终端信 息中的 profile (资料) 字段, 所述定位能力相关信息包含支持的定位方法和 定位相关能力(如终端辅助观测到达时间差 OTDOA方法、基于终端的 OTDOA 方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS 方法)、 预估往返时延 RTD 的能力、 支持或不支持在空闲态时报告测量结果 的能力、对定位请求通知流程的支持能力、支持 RSSI测量的能力、支持 CINR 测量的能力, 使得定位能力的协商更为完整和全面。
接着, 所述终端入网或者进行定位的过程中, 定位服务器从 AAA服务器 或者终端数据寄存器中获得终端的定位能力相关信息。
所述定位服务器将接收到的终端定位能力相关信息发送给 ASN-GW。 本发明的第十实施方式涉及 WiMAX 网络中定位能力协商方法, 本实施 方式在上述各实施方式的基础上, 进一步提供了激活态的终端移动到其它 ASN-GW下的情况, 具体流程如图 8所示。
在步骤 810 中, 激活态的终端从原来所在的 ASN-GW2 (即原先的服务 ASN-GW )移动到另一个 ASN-GW1 (即移动后的服务 ASN-GW ) 下时, 通 过向该 ASN-GW1下的某一个 BS发起 RNG-REQ (测距请求 )消息, 在该 BS 下接入。
接着, 进入步骤 820, BS通知 ASN-GW1有新的终端接入, 如果该 BS 上还没有获得该 ASN-GW1 的定位能力相关信息, 则可以向 ASN-GW1请求 该 ASN-GW1的定位能力相关信息。 需要说明的是, 如果 ASN-GW1 的定位 能力相关信息保存在锚点 ASN-GW, 则该 BS也可以向锚点 ASN-GW请求该 ASN-GWl的定位能力相关信息。
接着, 进入步骤 830, ASN-GW2通过终端上下文请求传递消息将终端的 定位能力相关信息也一同传递到新的 ASN-GW1 中。 需要说明的是, 如果终 端的定位能力相关信息保存在锚点 ASN-GW,则也可以由锚点 ASN-GW通过 终端上下文请求传递消息将终端的定位能力相关信息也一同传递到新的 ASN-GW 1中。
接着, 进入步骤 840, BS通过对 RNG-RSP消息的扩展, 在该 RNG-RSP 消息中携带网络的定位能力相关信息, 告知终端关于 ASN-GW1 的定位能力 相关信息; 或者通过经扩展的 SBC-RSP、 REG-RSP 消息、 或 ISF通道中的 L3消息,告知终端关于 ASN-GW1的定位能力相关信息。 (通过扩展已有信令 消息携带定位能力相关信息的实现方式以及网络侧的定位能力相关信息包含 的内容均与第一实施方式相同, 在此不再赘述)。
由此可见, 本实施方式进一步完善了终端与网络侧之间的定位能力的协 商过程, 使得网络侧的定位控制功能实体和 /或终端在决定向对方发送定位请 求消息, 或是在决定釆取某一种定位方法之前, 能够知晓对方所支持的定位 方法和定位能力, 避免了无谓的信令交互流程, 节约了通信资源。
本发明的第十一实施方式涉及 WiMAX 网络中定位能力协商方法, 本实 施方式在上述各实施方式的基础上, 进一步提供了激活态的终端进入空闲态, 再从空闲态进入激活态的情况, 具体流程分别如图 9、 图 10所示。
图 9为终端进入空闲态时该终端的定位能力相关信息传递流程图, 在步 骤 910中, 终端从激活态迁移到空闲态的时候, 向 ASN DPF ( ASN数据通道 功能) /Relay PC (中继寻呼控制器)发送 DREG-REQ (去注册) 消息。
接着, 进入步骤 920, ASN DPF/Relay PC向终端所属的 Anchor DPF/PC (锚点 DPF/PC )发送 "终端 info Request" (终端信息请求)消息, 在该消息 中携带终端的定位能力相关信息。
接着, 进入步骤 930, Anchor DPF/PC在收到 "终端 info Request" 消息 之后, 保存其中的终端上下文, 该上下文包括了终端的定位能力相关信息, 并向 ASN DPF/Relay PC回复 "终端 info response" (终端信息响应) 消息。
接着, 进入步骤 940, ASN DPF/Relay PC向终端回复 DREG-RSP (去注 册响应) 消息, 终端进入空闲态。
当发生 Anchor PC的迁移的时候, 即从原来的锚点 PC变换成一个新的 PC作为该终端的锚点 PC时,新的锚点 PC从原来的锚点 PC获取终端定位能 力相关信息。 比如说, 新的锚点 PC通过向原来的锚点 PC发送请求消息, 获 取终端定位能力相关信息; 或者, 原来的锚点 PC直接向新的锚点 PC发送终 端定位能力相关信息, 如图 13所示。
图 10为终端从空闲态进入激活态时定位能力相关信息传递流程图, 在步 骤 1010中, 空闲态的终端移动到不同的 ASN-GW下活动时, 当它被外间寻 呼或是自己主动退出 idle模式, 该终端向 ASN DPF/Relay PC发送 REG-REQ 消息。
接着 , 进入步骤 1020 , ASN DPF/Relay PC向终端所归属的 Anchor PC发 送 "IM Exit MS state Change Request" 消息。
接着, 进入步骤 1030, Anchor PC在 "IM Exit MS state Change Response" 消息中携带终端的定位能力相关信息。
接着,进入步骤 1040, ASN DPF/Relay PC通过在向终端发送的 REG-RSP 或者其他的 MAC层消息或者后续的网络重入过程中的 ISF等消息中携带网络 侧的定位能力相关信息, 将网络侧的定位能力相关信息通知给该终端。
由于本实施方式进一步提供了激活态的终端进入空闲态, 再从空闲态进 入激活态的情况, 因此完善了终端与网络侧之间的定位能力的协商过程, 使 得网络侧的定位控制功能实体和 /或终端在决定向对方发送定位请求消息, 或 是在决定釆取某一种定位方法之前, 能够知晓对方所支持的定位方法和定位 能力, 避免了无谓的信令交互流程, 节约了通信资源。
本发明的第十二实施方式涉及 WiMAX 网络中定位能力协商方法, 本实 施方式在上述各实施方式的基础上,提供了终端切换到目标 ASN-GW的情况, 进一步完善了终端与网络侧之间的定位能力的协商过程。
具体地说,如图 11所示,终端在切换到目标 ASN-GW下时,目标 ASN-GW 通过 "终端 information request" (终端信息请求 )消息向原先的服务 ASN-GW 请求终端的上下文, 并在此时获得终端的定位能力相关信息。 上述过程中, 可能还需要在目标 BS和目标 ASN-GW间进行目标 ASN-GW的定位能力相 关信息的请求和信息交换。
然后, 目 标 BS 通过在网络重入过程中主动发送经扩展的 SBC-RSP/REG-RSP消息, 在该消息中携带目标 ASN-GW的定位能力相关信 息, 来告知该终端网络侧支持的定位能力; 或者通过在经扩展的 RNG-RSP消 息中携带目标 ASN-GW的定位能力相关信息, 来通知终端; 或者通过在 ISF 中进行定位能力相关信息的交互。
本发明的第十三实施方式涉及 WiMAX 网络中定位能力协商方法, 本实 施方式在上述各实施方式的基础上, 提供了网络发生迁移的情况。
具体地说, 当发生网络迁移后, 特别是服务 ASN-GW有了变化之后, 需 要将改变后的网络侧的定位能力相关信息通知给终端, 网络侧可通过以下方 式之一进行通知:
如果终端当前处于激活态, 则在该终端的周期性测距过程中通过 RNG-RSP消息进行通知,或在 MAC层的消息或 L3消息中进行通知,或通过 建立该终端与该终端当前的服务 ASN-GW之间的高层连接, 进行通知;
如果网络侧不具备定位能力, 则在收到终端的定位能力相关信息后, 通 过返回响应消息指示出现错误或不返回相应的响应消息, 通知该终端改变后 的网络侧不具备定位能力 (比如说, 如终端通过 "MOLR" 定位请求消息或 者重新入网或 REG-REQ/SBC-REQ消息通知网络侧本终端的定位能力相关信 息, 网络侧通过返回响应消息指示出现错误或不返回相应的响应消息, 告知 该终端网络侧不具备定位能力); 如果终端当前处于空闲态, 则在该终端从空闲态转为激活态的过程中, 通过该终端与网络侧的周期性位置更新过程的交互消息, 如经扩展的
RNG-RSP消息进行通知, 或在该终端转为激活态后, 在 MAC层的消息或 L3 消息中进行通知, 或在终端与当前的服务 ASN-GW之间建立的高层连接中传 输消息, 进行通知。
由此可见, 当网络发生迁移后, 网络侧需将改变后的网络侧的定位能力 相关信息通知给终端, 保证了终端获取到的关于网络侧的定位能力相关信息 的准确性。
本发明的第十四实施方式涉及 WiMAX 网络中定位能力协商方法, 本实 施方式在上述各实施方式的基础上, 提供了终端的定位能力发生变化的情况。
具体地说, 终端在接入网络之后, 通过在线更新的方式, 可能会具有新 的能力 (如定位能力)此时终端需要通知网络侧关于本终端具有的定位能力 相关信息。 以便于网络可以针对终端进行合适的定位方式选择, 以满足定位 业务的服务质量需求。
终端可以釆用的方式有: 通过 ISF通道的 L3信息携带终端的定位能力相 关信息, 或者通过 ASN-GW与终端之间建立的高层连接传输携带有定位能力 相关信息的消息, 或者在终端发起 "MOLR" 定位请求的时候发送给网络侧。 如果终端在更新了能力之后, 可以发起重新入网, 则该终端的能力就可以通 过重新入网时候的 SBC-REQ/REG-REQ等信令过程发送到网络侧。
本发明的第十五实施方式涉及 WiMAX 网络中定位能力协商系统, 包含 终端设备和 ASN的网络实体 (如服务 ASN-GW和 /或锚点 ASN-GW )„
如图 12所示, 在终端设备中包含: 第一通知模块, 用于将自身的定位能 力相关信息通知给 ASN的网络实体; 和接收模块, 用于接收网络侧的定位能 力相关信息。 在 ASN的网络实体中包含: 存储模块, 用于在收到终端的定位 能力相关信息后, 将该定位能力相关信息进行保存; 第二通知模块, 用于将 终端的定位能力相关信息通知给其它网络实体(如服务 ASN-GW、 移动后的 终端的服务 ASN-GW、 锚点 ASN-GW、 PC, 锚点 ASN-GW或服务 ASN-GW 在该终端在激活态下移动到其它 ASN-GW下时, 将该终端的定位能力相关信 息通知给移动后的该终端的服务 ASN-GW, PC在该终端从空闲态转为激活态 后, 将该终端的定位能力相关信息传送给该终端当前的服务 ASN-GW )。 该第 二通知模块还用于向该终端发送网络侧的定位能力相关信息, 或网络侧的定 位能力与该终端的定位能力的交集信息。 当然, 也可能由基站向该终端发送 网络侧的定位能力相关信息, 或网络侧的定位能力与该终端的定位能力的交 集信息。 也就是说, 该基站包含用于在收到该终端的定位能力相关信息后, 向该终端发送网络侧的定位能力相关信息, 或网络侧的定位能力与该终端的 定位能力的交集信息的模块, 以及用于在尚未具备该定位能力相关信息或交 集信息, 向该网络侧设备获取该定位能力相关信息或交集信息的模块。
终端设备的定位能力相关信息包含以下之一或其任意组合: 支持的定位 方法和定位相关能力、 预估往返时延 RTD的能力、 支持或不支持在空闲态时 才艮告测量结果的能力、 对定位请求通知流程的支持能力、 支持 RSSI测量的能 力以及支持 CINR测量的能力等。网络侧的定位能力相关信息包含支持的定位 方法和定位相关能力。 其中, 定位方法和定位相关能力包含以下之一或其任 意组合: 终端辅助观测到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
需要说明的是, 本实施方式中的各模块均为逻辑模块, 在物理上可以通 过一个和多个物理设备实现。
由于实现了在 WiMAX 网络中终端与网络侧之间的定位能力协商, 使得 网络侧的定位控制功能实体和 /或终端在决定向对方发送定位请求消息, 或是 在决定釆取某一种定位方法之前, 能够知晓对方所支持的定位方法和定位能 力, 从而选择合适的能够满足定位服务质量要求并且终端支持的定位方法, 或是要求定位的终端能够在网络侧实体具有支持所请求的定位方法的情况下 才发起定位请求, 避免了无谓的信令交互流程, 节约了通信资源。 综上所述, 在本发明的各实施方式中, 终端或网络侧将自身的定位能力 相关信息发送到 ASN的网络实体中, 该 ASN的网络实体收到该终端的定位 能力相关信息后, 保存该定位能力相关信息。 使得 WiMAX 网络能够根据终 端的定位能力选择合适的定位方法, 保证了网络侧的定位控制功能实体在决 定釆取某一种定位方法之前, 能够知晓对方所支持的定位方法和定位能力, 从而选择合适的能够满足定位服务质量要求并且终端支持的定位方法, 避免 了无谓的信令交互流程,节约了通信资源。终端定位的实现通常需要服务 ASN 的协助, 所以由服务 ASN中的设备保存终端定位能力比较合适。
终端可通过 MAC层的消息、 L3消息、 或建立该终端与 ASN的网络实体 之间的高层连接, 将自身的定位能力相关信息发送到 ASN的网络实体。 使得 WiMAX 网络中可以通过多种方式灵活实现终端与网络侧之间的定位能力协 商。
终端的定位能力相关信息包含以下之一或其任意组合: 支持的定位方法 和定位相关能力、 预估往返时延 RTD的能力、 支持或不支持在空闲态时报告 测量结果的能力、 对定位请求通知流程的支持能力。 使得终端与网络侧之间 的定位能力的协商更为完整和全面, 进一步避免了无谓的信令交互流程, 节 约了通信资源。
当终端移动到新的 ASN-GW下或切换到目标 ASN-GW后, 通过网络侧 实体之间的信息交互, 将该终端的定位能力相关信息传送给新的 ASN-GW或 目标 ASN-GW, 进一步完善了终端与网络侧之间的定位能力的协商过程。
服务 ASN-GW在获取到终端的定位能力相关信息后, 也可以向该终端回 复网络侧的定位能力相关信息, 或网络侧的定位能力与该终端的定位能力的 交集信息(也可能由基站发送)。 使得终端能够获得网络侧的定位能力, 从而 在网络侧实体具有支持所请求的定位方法的情况下才发起定位请求, 避免了 无谓的信令交互流程, 节约了通信资源。
当所述网络侧和 /或终端的定位能力发生改变时, 需要通知对端改变后的 定位能力相关信息, 从而保证对端获取到的本端的定位能力相关信息的准确 性。
虽然通过参照本发明的某些优选实施方式, 已经对本发明进行了图示和 描述, 但本领域的普通技术人员应该明白, 可以在形式上和细节上对其作各 种改变, 而不偏离本发明的精神和范围。

Claims

权利 要 求 书
1. 一种微波接入全球互通网络中定位能力协商方法, 其特征在于, 包含以 下步骤:
接入服务网络 ASN的网络实体从终端或者连接服务网络 CSN的网络实体 中接收所述终端的定位能力相关信息;
所述接入服务网络 ASN的网络实体收到所述终端的定位能力相关信息后, 保存该定位能力相关信息。
2. 根据权利要求 1所述的微波接入全球互通网络中定位能力协商方法, 其 特征在于, 当所述服务网络 ASN的网络实体从终端接收所述终端的定位能力相 关信息时, 所述终端通过媒体接入控制 MAC层的消息、 或层 3消息、 或建立该 终端与所述网络实体之间的高层连接, 将自身的定位能力相关信息发送到该网 络实体。
3. 根据权利要求 1所述的微波接入全球互通网络中定位能力协商方法, 其 特征在于, 当所述接入服务网络 ASN的网络实体从连接服务网络 CSN的网络 实体中接收所述终端的定位能力相关信息时, 所述方法还包括以下步骤:
所述连接服务网络 CSN 的网络实体预先获得所述终端的定位能力相关信 息。
4.根据权利要求 3所述的微波接入全球互通网络中定位能力协商方法,其特 征在于, 所述连接服务网络 CSN的网络实体为: 验证、授权、 计费协议服务器, 或者定位服务器。
5.根据权利要求 3所述的微波接入全球互通网络中定位能力协商方法,其特 信息的步骤为:
所述终端通过应用层消息将自身的定位能力相关信息发送到连接服务网络 CSN的网络实体中;
所述连接服务网络 CSN的网络实体收到所述终端的定位能力相关信息后, 保存该定位能力相关信息。
6.根据权利要求 3所述的微波接入全球互通网络中定位能力协商方法,其特 信息的步骤为: 关信息。
7. 根据权利要求 1至 6中任一所述的微波接入全球互通网络中定位能力协 商方法, 其特征在于, 所述终端的定位能力相关信息包含以下之一或其任意组 合:
支持的定位方法和定位相关能力、 估算往返时延 RTD的能力、 支持或不支 持在空闲态时报告测量结果的能力、 对定位请求通知流程的支持能力、 支持接 收信号强调指示测量的能力、 支持载干比测量的能力;
所述定位方法和定位相关能力包含以下之一或其任意组合: 终端辅助观测 到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
8. 根据权利要求 7所述的微波接入全球互通网络中定位能力协商方法, 其 特征在于,
所述接入服务网络 ASN 的网络实体为当前为所述终端服务的 ASN 网关 ASN-GW, 和 /或锚点 ASN-GW;
如果所述接入服务网络 ASN 的网络实体为锚点 ASN-GW , 则该锚点 ASN-GW 将获得的所述终端的定位能力相关信息通知给该终端的服务 ASN-GW。
9. 根据权利要求 8所述的微波接入全球互通网络中定位能力协商方法, 其 特征在于,
当所述终端在激活态下移动到其它 ASN-GW下时, 所述服务 ASN-GW将 该终端的定位能力相关信息通知给移动后的该终端的服务 ASN-GW; 或者, 所述 Λ良务 ASN-GW收到所述终端的定位能力相关信息后, 将该终端的定位 能力相关信息通知给锚点 ASN-GW, 并在该锚点 ASN-GW中进行保存, 当该终 端在激活态下移动到其它 ASN-GW下时, 由该锚点 ASN-GW将该终端的定位 能力相关信息通知给移动后的该终端的服务 ASN-GW; 或者,
所述锚点 ASN-GW在获得所述终端的定位能力相关信息后, 保存该定位能 力相关信息, 将该终端的定位能力信息通知服务 ASN-GW, 锚点 ASN-GW在每 次终端移动之后将该终端的定位能力相关信息通知给移动后的该终端的服务 ASN-GW。
10. 根据权利要求 8 所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 还包含以下步骤:
当所述终端切换到目标 ASN-GW下时,该目标 ASN-GW请求从源 ASN-GW 获取该终端的定位能力相关信息。
11. 根据权利要求 8 所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 还包含以下步骤:
当所述终端从激活态转为空闲态后, 网络侧将该终端的定位能力相关信息 保存至寻呼控制器, 并在该终端从空闲态转为激活态后, 将保存的该终端的定 位能力相关信息传送给该终端当前的服务 ASN-GW。
12. 根据权利要求 8 所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 还包含以下步骤:
所述服务 ASN-GW向该终端发送网络侧的定位能力相关信息, 或网络侧的 定位能力与该终端的定位能力的交集信息; 或者,
由用于为所述服务 ASN-GW和所述终端的交互进行消息转发的基站, 在收 到该终端的定位能力相关信息后, 向该终端发送网络侧的定位能力相关信息, 或网络侧的定位能力与该终端的定位能力的交集信息, 如果该基站尚未具备该 定位能力相关信息或交集信息, 则该基站先向所述服务 ASN-GW获取该定位能 力相关信息或交集信息。
13. 根据权利要求 12所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 所述网络侧的定位能力相关信息包含支持的定位方法和定位相关 能力;
所述定位方法和定位相关能力包含以下之一或其任意组合: 终端辅助观测 到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
14. 根据权利要求 12所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 如果所述网络侧不具备定位能力, 则在收到所述终端的定位能力 相关信息后, 通过返回响应消息指示出现错误或不返回响应消息, 通知该终端 网络侧不具备定位能力。
15. 根据权利要求 12所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 当所述网络侧的定位能力发生改变时, 通过以下方式之一通知所 述终端改变后的网络侧的定位能力相关信息, 或改变后的网络侧的定位能力与 所述终端的定位能力的交集信息:
如果所述终端当前处于激活态, 则在该终端的周期性测距过程中通过经扩 展的测距响应消息进行所述通知,或在所述 MAC层的消息或层 3消息中进行所 述通知, 或建立该终端与该终端当前的服务 ASN-GW之间的高层连接, 进行所 述通知;
如果所述网络侧不具备定位能力, 则在收到所述终端的定位能力相关信息 后, 通过返回响应消息指示出现错误或不返回相应的响应消息, 通知该终端改 变后的网络侧不具备定位能力;
如果所述终端当前处于空闲态, 则可以通过该终端与网络侧的周期性位置 更新过程的交互消息中进行所述通知; 或在该终端从空闲态转为激活态的过程 中, 通过经扩展的测距响应消息进行所述通知, 或在该终端转为激活态后在所 述 MAC层的消息或层 3消息中进行所述通知,或建立该终端与该终端当前的服 务 ASN-GW之间的高层连接, 进行所述通知。
16. 根据权利要求 8 所述的微波接入全球互通网络中定位能力协商方法, 其特征在于, 如果所述终端的定位能力相关信息发生改变, 则将改变后的定位 能力相关信息通知给所述网络侧。
17.一种微波接入全球互通网络中定位能力协商系统,包含终端设备和 ASN 的网络实体, 其特征在于,
所述终端设备包含: 第一通知模块, 用于将自身的定位能力相关信息通知 给所述网络实体;
所述 ASN的网络实体包含: 存储模块, 用于在收到所述终端的定位能力相 关信息后, 将该定位能力相关信息进行保存。
18. 根据权利要求 17所述的微波接入全球互通网络中定位能力协商系统, 其特征在于, 所述终端的定位能力相关信息包含以下之一或其任意组合:
支持的定位方法和定位相关能力、 预估往返时延 RTD的能力、 支持或不支 持在空闲态时报告测量结果的能力、 对定位请求通知流程的支持能力;
所述定位方法和定位相关能力包含以下之一或其任意组合: 终端辅助观测 到达时间差 OTDOA方法、 基于终端的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传统 GPS方法。
19. 根据权利要求 17或 18所述的微波接入全球互通网络中定位能力协商 系统, 其特征在于,
所述 ASN的网络实体为当前为所述终端服务的 ASN网关 ASN-GW, 和 /或 锚点 ASN-GW。
20. 根据权利要求 19所述的微波接入全球互通网络中定位能力协商系统, 其特征在于, 所述 ASN的网络侧设备还包含: 第二通知模块, 用于将所述终端 的定位能力相关信息通知给其它网络实体;
所述其它网络实体至少为以下之一: 所述终端的服务 ASN-GW、 移动后的 所述终端的服务 ASN-GW、 锚点 ASN-GW、 寻呼控制器;
所述锚点 ASN-GW 或服务 ASN-GW在所述终端在激活态下移动到其它 ASN-GW 下时, 将该终端的定位能力相关信息通知给移动后的该终端的服务 ASN-GW;
所述寻呼控制器在所述终端从空闲态转为激活态后, 将该终端的定位能力 相关信息传送给该终端当前的服务 ASN-GW。
21. 根据权利要求 19所述的微波接入全球互通网络中定位能力协商系统, 其特征在于, 所述第二通知模块还用于向该终端发送网络侧的定位能力相关信 息, 或网络侧的定位能力与该终端的定位能力的交集信息;
所述网络侧的定位能力相关信息包含支持的定位方法和定位相关能力, 包 含以下之一或其任意组合: 终端辅助观测到达时间差 OTDOA方法、 基于终端 的 OTDOA方法、 终端辅助全球定位系统 GPS方法、 基于终端的 GPS方法、 传 统 GPS方法;
所述终端设备还包含: 用于接收所述网络侧的定位能力相关信息的接收模 块。
22. 根据权利要求 19所述的微波接入全球互通网络中定位能力协商系统, 其特征在于, 所述系统还包含基站, 该基站包含: 用于在收到所述终端的定位 能力相关信息后, 向该终端发送网络侧的定位能力相关信息, 或网络侧的定位 能力与该终端的定位能力的交集信息的模块; 和
用于在所述基站尚未具备所述网络侧的定位能力相关信息, 或网络侧的定 位能力与所述终端的定位能力的交集信息时, 向所述网络侧设备获取该定位能 力相关信息或交集信息的模块。
23. 一种终端设备, 其特征在于, 包含:
第一通知模块, 用于将自身的定位能力相关信息通知给 ASN的网络实体。
24. 一种接入服务网络的网络实体, 其特征在于, 包含:
存储模块, 用于在收到终端的定位能力相关信息后, 将该定位能力相关信 息进行保存。
25. 根据权利要求 24所述的接入服务网络的网络实体, 其特征在于, 还包 含:
第二通知模块, 用于将所述终端的定位能力相关信息通知给其它网络实体; 所述其它网络实体至少为以下之一: 终端的服务 ASN-GW、 移动后的终端 的服务 ASN-GW、 锚点 ASN-GW、 寻呼控制器。
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