WO2015074178A1 - 一种接入网选择方法及装置 - Google Patents

一种接入网选择方法及装置 Download PDF

Info

Publication number
WO2015074178A1
WO2015074178A1 PCT/CN2013/087407 CN2013087407W WO2015074178A1 WO 2015074178 A1 WO2015074178 A1 WO 2015074178A1 CN 2013087407 W CN2013087407 W CN 2013087407W WO 2015074178 A1 WO2015074178 A1 WO 2015074178A1
Authority
WO
WIPO (PCT)
Prior art keywords
user terminal
access network
cell
access
information
Prior art date
Application number
PCT/CN2013/087407
Other languages
English (en)
French (fr)
Inventor
李安俭
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/087407 priority Critical patent/WO2015074178A1/zh
Priority to CN201380002897.5A priority patent/CN104904274A/zh
Publication of WO2015074178A1 publication Critical patent/WO2015074178A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection

Definitions

  • the present invention relates to the field of communications, and in particular, to an access network selection method and apparatus.
  • an ANDSF (Access Network Discovery Support Functions) entity is configured in the core network to provide a mode for selecting a target access network for a user terminal according to an operator policy.
  • the ANDSF entity cooperates with the user terminal through the core network to realize intelligent network selection.
  • the mapping relationship table is stored in the existing ANDSF entity, and the table stores the correspondence between the cell ID of all cells in the coverage of the 3GPP network and the identification information of multiple access network nodes deployed in each cell.
  • the information of the standard i is SSID (Service Set Identifier) and BSSID (Basic Service Set Identifier).
  • the current network side instructs the UE to intelligently select the access network through the ANDSF entity unit.
  • the specific steps include: the user terminal determines the cell ID of the current cell, and sends the cell ID to the core network, and the ANDSF entity of the core network queries the entry corresponding to the cell ID sent by the user terminal in the mapping relationship table, and obtains the current user terminal.
  • the identification information of each access network node existing in the cell, and the identification information is sent to the user terminal, and the user terminal can try to search for the corresponding access network nodes according to the identification information to prepare for access.
  • the maximum coverage is 100km due to the large coverage of the cell. Therefore, there are a large number of access network nodes in the coverage of a certain cell. If the user terminal searches all the access network nodes in the cell, the power consumption of the user terminal is greatly increased.
  • an access network selection method including: receiving an access request message sent by a user terminal, where the access request message includes Said The coordinate information of the location of the user terminal and the cell ID of the cell where the user terminal is located; the search enhanced mapping relationship table obtains the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located, where the enhanced mapping relationship
  • the correspondence between the cell ID of the cell and the node information of the access network node in the cell is stored in the table, and the node information of the access network node includes: access information and coordinate information of the access network; The coordinate information of the location of the user terminal, the coordinate information in the node information of the access network node corresponding to the cell ID of the
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Acces s Ne twork Info Reques t.
  • an access network selection method including: sending an access request message to an access network discovery and selection function ANDSF entity, where the access request message includes coordinate information of a location where the user terminal is located, and the user a cell ID of the cell in which the terminal is located; receiving an access response message sent by the ANDSF entity, where the access response message carries node information of an access network node that is closest to the user terminal; The access information of the access network in the node information of the access network node of the terminal is the latest, and the access network node closest to the user terminal is searched for and accessed.
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Acces s Ne twork Info Reques t message.
  • the method before the sending the access request message to the ANDSF entity, the method further includes: obtaining the The coordinate information of the location of the user terminal.
  • the obtaining the coordinate information of the location where the user terminal is located the method specifically includes: obtaining, by using an internal global positioning system (GPS) The coordinate information of the location where the user terminal is located, or the coordinate information of the location where the user terminal is located by using the wireless positioning technology.
  • GPS global positioning system
  • an access network selection method including: obtaining coordinate information of a location where a user terminal is located, and a cell of a cell where the user terminal is located
  • An enhanced mapping relationship table sent by the access network discovery and selection function ANDSF entity where the enhanced mapping relationship table stores the correspondence between the cell ID of the cell and the node information of the access network node in the cell
  • the node information of the access network node includes: access information and coordinate information of the access network; and searching for the enhanced mapping relationship table to obtain node information of the access network node corresponding to the cell ID of the cell where the user terminal is located; And the coordinate information in the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located, and the node information of the access network node closest to the user terminal is obtained according to the coordinate information of the location of the user terminal;
  • the access information of the access network in the node information of the access network node that is closest to the user terminal searches for and accesses the access network node that is closest to the user terminal.
  • the obtaining the coordinate information of the location of the user terminal includes: obtaining, by using an internal global positioning system (GPS), coordinate information of a location of the user terminal, or The coordinate information of the location of the user terminal is obtained by wireless positioning technology.
  • GPS global positioning system
  • an access network discovery and selection function ANDSF entity including: a receiving unit, configured to receive an access request message sent by a user terminal, where the access request message includes a location of the user terminal The coordinate information and the cell ID of the cell where the user terminal is located; the searching unit, configured to search for the enhanced mapping relationship table, obtain the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located, and the node information, where , said The mapping relationship between the cell ID of the cell and the node information of the access network node in the cell is stored in the enhanced mapping relationship table, where the node information of the access network node includes: access information and coordinate information of the access network; a comparison unit, configured to compare coordinate information of a location of the user terminal, and coordinate information in node information of an access network node corresponding to a cell ID of a cell where the user terminal is obtained by the searching unit, a node information of the access network node of the user terminal; a sending unit, configured to send
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Acces s Ne twork Info Reques t.
  • a user terminal including: a sending unit, configured to send an access request message to an access network discovery and selection function ANDSF entity, where the access request message includes coordinate information and a location of a location where the user terminal is located a cell ID of a cell in which the user terminal is located; a receiving unit, configured to receive an access response message sent by the ANDSF entity, where the access response message carries node information of an access network node that is closest to the user terminal; An access unit, configured to search for and access the user terminal according to the access information of the access network in the node information of the access network node that is closest to the user terminal that is received by the receiving unit The nearest access network node.
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Acces s Ne twork Info Reques t.
  • the method further includes: obtaining, by the sending unit, the sending, by the sending unit, to the ANDSF entity Before the access request message is obtained, coordinate information of the location of the user terminal is obtained.
  • the obtaining unit is specifically configured to obtain the location of the user terminal by using an internal global positioning system (GPS) The coordinate information, or the wireless positioning technology to obtain the coordinate information of the location of the user terminal.
  • GPS global positioning system
  • a user terminal including: an obtaining unit, configured to obtain coordinate information of a location where the user terminal is located, and a cell ID of a cell where the user terminal is located; and a receiving unit, configured to receive an access network discovery and selection function And an enhanced mapping relationship table sent by the ANDSF entity, where the enhanced mapping relationship table stores a correspondence between a cell ID of the cell and node information of the access network node in the cell, where the node information of the access network node includes: Accessing information and coordinate information of the access network; the searching unit is configured to search the enhanced mapping relationship table received by the receiving unit to obtain node information of an access network node corresponding to a cell ID of a cell where the user terminal is located; a unit, configured to compare coordinate information of a location of the user terminal obtained by the obtaining unit, and coordinate information in node information of an access network node corresponding to a cell ID of a cell where the user terminal is obtained by the searching unit Obtaining node information of an access network node that is
  • the obtaining unit is further configured to obtain coordinate information of a location of the user terminal by using an internal global positioning system (GPS), or obtain a location by using a wireless positioning technology.
  • GPS global positioning system
  • the receiving unit is further configured to: before the obtaining unit obtains coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located, An enhanced mapping relationship table sent by the ANDSF entity.
  • the ANDSF entity receives the access request message sent by the user terminal, and searches for an enhanced mapping table according to the cell ID of the cell where the user terminal is located, which is carried in the access request message. Obtaining the coverage of the cell where the user terminal is located Node information of all the access network nodes in the range; comparing the coordinate information of the location of the user terminal carried in the access request message with the node information of the access network node in the coverage area of the cell where the user terminal is located Coordinate information, obtaining node information of an access network node closest to the user terminal; transmitting node information of the access network node closest to the user terminal to the user terminal, so that the user terminal can search for the departure location The access network node closest to the user terminal is accessed.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • FIG. 1 is a schematic flowchart of an access network selection method according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flowchart of another access network selection method according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic flowchart of a method for selecting an access network according to Embodiment 3 of the present invention
  • FIG. 5 is a schematic flowchart of a method for selecting an access network according to Embodiment 3 of the present invention
  • FIG. 6 is a structural block diagram of a user terminal according to Embodiment 4 of the present invention
  • FIG. 7 is a structural block diagram of a user terminal according to Embodiment 5 of the present invention
  • FIG. 9 is a structural block diagram of a user terminal according to Embodiment 6 of the present invention
  • FIG. 10 is a user terminal according to Embodiment 7 of the present invention; Structure diagram.
  • Embodiment 1 The embodiment of the present invention provides an access network selection method, where an execution subject is an ANDSF entity. As shown in FIG. 1, the method includes the following steps:
  • the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the coordinate information of the location where the user terminal is located is obtained by the user terminal before sending the access request message, and is sent to the ANDSF entity by using the access request message.
  • the ANDSF entity is set up on the residential access network side, the network receiving the access request message is a residential access network, and the access request message is a MAC (Media Access Control) message. Or the RRC (Radio Resource Control) message; when the ANDSF entity is set up on the core network side, the network end that receives the access request message is the core network, and the access request message may be an Access Network. Info Request.
  • an enhanced mapping relationship table to obtain node information of an access network node corresponding to a cell ID of a cell where the user terminal is located.
  • the relationship between the cell ID of the cell and the node information of the access network node in the cell is stored in the enhanced mapping relationship table, and the node information of the access network node includes: access information of the access network.
  • coordinate information, and the enhanced mapping relationship table is stored in the ANDSF entity.
  • the ANDSF entity after receiving the access request message sent by the user terminal, the ANDSF entity first searches the enhanced mapping relationship table according to the cell ID of the cell where the user terminal is located included in the access request message, to obtain the user terminal. Node information of all access network nodes within the coverage of the cell.
  • the node information of all access network nodes in the coverage of the cell where the user terminal is located by the ANDSF entity includes coordinate information of all access network nodes in the coverage of the cell where the user terminal is located. And the ANDSF entity compares the coordinate information of the location where the user terminal is located with the coordinate information of all nodes in the coverage of the cell where the user terminal is located, and obtains node information of the access network node closest to the user terminal. 1 04.
  • the access response message carries the node information of the access network node closest to the user terminal obtained in step 103, so that the user terminal searches for the access network node closest to the user terminal. , access.
  • An embodiment of the present invention provides an access network selection method, where the execution subject is a user terminal. As shown in FIG. 2, the method includes the following steps:
  • the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the user terminal Before the user terminal sends an access request message to the ANDSF entity of the network, the user terminal first obtains coordinate information of the location of the user terminal by using an internal global positioning system (GPS) or a wireless positioning technology.
  • GPS global positioning system
  • the access request message is a medium access control MAC message and a radio resource control RRC message.
  • the access request message is Acces s Ne twork Info Reque s t.
  • the access response message carries node information of an access network node that is closest to the user terminal, and the node information of the access network node includes: access information and coordinate information of the access network.
  • the ANDSF entity receives the access request message sent by the user terminal, and obtains an enhanced mapping table according to the cell ID of the cell where the user terminal is located, which is carried in the access request message.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node. The amount of search, reducing the power consumption of the user terminal.
  • Embodiment 2 An embodiment of the present invention provides an access network selection method. As shown in FIG. 3, the method includes the following steps:
  • the user terminal obtains the coordinate information of the location of the user terminal by using two methods.
  • the coordinate information of the location of the user terminal is obtained through the internal global positioning system (GPS), or the 0TD0A (Observed Time Difference of Arrival,
  • the wireless positioning technology such as the arrival time difference positioning method, CID, RFPM, etc. obtains the coordinate information of the location of the user terminal.
  • the 0TD0A technology is that the user terminal sends a signal to three base stations, and then performs positioning according to the time difference of the signal reaching the three bases. For example, the coordinate information of the location where the user terminal obtains is (2, 5).
  • the user terminal sends an access request message to the ANDSF entity.
  • the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the ANDSF entity receives an access request message sent by the user terminal, and searches for the enhanced mapping relationship table to obtain node information of the access network node corresponding to the cell ID of the cell where the user terminal is located.
  • the enhanced mapping relationship table stores a correspondence between a cell ID of a cell and node information of an access network node in the cell.
  • the access information of the access network includes an SSID and a BSSID
  • the node information of the access network node includes an SSID, a BSSID, and coordinate information.
  • the SSID refers to a unique identifier ID of a wifi access node
  • the BSSID refers to an identifier ID of a basic service device BSS.
  • the receiving, by the ANDSF entity, the access request message sent by the user terminal includes two cases.
  • the access request message sent by the user terminal is Access Network Info Request; If the ANDSF entity is set up on the residential access network side, the access request message sent by the user terminal is a MAC message or an RRC message.
  • the enhanced mapping table in the ANDSF entity stores node information of the wifi network, including access information SSID and BSSID of the access network, and Coordinate information.
  • the cell ID of the cell where the user terminal is located in the access request message received by the ANDSF entity is Cell_ID1
  • the enhanced mapping table shown in Table 1 the entry corresponding to the Cell_ID1 is searched for, and the cell Ce 11 _ where the user terminal is located is known.
  • the access network nodes in the coverage of ID1 have A, B, and C, and the node information of the access network nodes, B, and C can be obtained.
  • the ANDSF entity compares the coordinate information of the location of the user terminal, and the coordinate information in the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located, and obtains the closest connection to the user terminal. Node information of the incoming node.
  • the coordinate information of the access network nodes A, B, and C in the node information of all access network nodes A, B, and C in the coverage area of the cell Cell_ID1 where the user terminal is located is respectively For (3, 4), (6, 8), (5, 3).
  • the ANDSF entity compares (3, 4), (6, 8), (5, 3) with the coordinates of the location of the user terminal ( 2 , 5) one by one to obtain the distance between the access network node, B, and C to the user terminal. 25, l3, then the access network node closest to the user terminal can be obtained as A.
  • the ANDSF entity sends the node information of the access network node A to the user terminal, and the node information of the access network node A includes Wi-Fil (SSID), BS1 (BSSID) and coordinate information (3, 4) of access network node A.
  • SSID Wi-Fil
  • BSSID BS1
  • coordinate information 3, 4
  • the ANDSF entity sends an access response message to the user terminal.
  • the access response message carries node information of an access network node that is closest to the user terminal, so that the user terminal searches for an access network node that is closest to the user terminal, and performs access.
  • the access response message sent by the ANDSF entity to the user terminal includes node information of an access network node that is closest to the user terminal, that is, the access response message includes: Wi-F i 1, BS 1 and coordinate information (3, 4).
  • the user terminal receives an access response message sent by the ANDSF entity, and searches for and accesses the access information according to the access information of the access network in the node information of the access network node that is closest to the user terminal. Describe the access network node that is closest to the user terminal. For example, the user terminal receives the access response message, and searches for Wi-F i l and BS 1 according to the node information of the access network node A included in the access response message, to prepare for access.
  • the access network selection method provided by the embodiment of the present invention, the ANDSF entity receives the access request message sent by the user terminal, and obtains an enhanced mapping table according to the cell ID of the cell where the user terminal is located, which is carried in the access request message.
  • the node information of all the access network nodes in the coverage area of the cell where the user terminal is located comparing the coordinate information of the location of the user terminal carried in the access request message with the access network in the coverage area of the cell where the user terminal is located And obtaining, by the coordinate information in the node information of the node, the node information of the access network node that is closest to the user terminal; and sending the node information of the access network node that is closest to the user terminal to the user terminal, so that the user terminal The access network node closest to the user terminal may be searched for access.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • Embodiment 3 An embodiment of the present invention provides an access network selection method. As shown in FIG. 4, the method includes the following steps:
  • the user terminal first obtains coordinate information of a location of the user terminal by using an internal global positioning system (GPS) or wireless positioning technology.
  • GPS global positioning system
  • the user terminal master To obtain the coordinate information of the location of the location by two methods, one is to obtain the coordinate information of the location of the user terminal through the internal global positioning system GPS, or the OTDOA (Observed Time Difference of Arrival) can be used. ), CID, RFPM and other wireless positioning technologies obtain coordinate information of the location of the user terminal.
  • GPS global positioning system
  • CID, RFPM and other wireless positioning technologies obtain coordinate information of the location of the user terminal.
  • the 0TD0A technology is that the user terminal sends a signal to three base stations, and then performs positioning according to the time difference of the signals reaching the three bases.
  • the user terminal obtains the coordinate information of the location where the user terminal is located (5, 5), and obtains the cell ID of the cell where the user terminal is located as Cell_ID1.
  • the ANDSF entity first sends an enhanced mapping relationship table to the user terminal.
  • the ANDSF entity sends the enhanced mapping relationship table to the user terminal, where the ANDSF entity periodically sends an enhanced mapping relationship table to the user terminal, and the ANDSF entity receives the request sent by the user terminal and then sends the request to the user terminal. Send an enhanced mapping relationship table.
  • the relationship between the cell ID of the cell and the node information of the access network node in the cell is stored in the enhanced mapping relationship table, and the node information of the access network node includes: access information of the access network. And coordinate information. If the access network is a wifi network, the access information of the access network includes an SSID and a BSSID, and the node information of the access network node includes: an SSID, a BSSID, and coordinate information, where the SSID refers to a wifi. A unique identification ID of the access node, the BSSID referring to the identification ID of the basic service device BSS.
  • the user terminal receives an enhanced mapping relationship table sent by the ANDSF entity. After obtaining the coordinate information of the current cell and the cell ID of the current cell, the user terminal receives the enhanced mapping relationship table sent by the ANDSF entity, so that the user terminal does not need to perform mutual signaling with the ANDSF entity, and can directly query internally, and then can access. Go to a node.
  • the user terminal searches for the enhanced mapping relationship table to obtain node information of an access network node corresponding to a cell ID of a cell where the user terminal is located.
  • the user terminal searches the enhanced mapping relationship table according to the cell ID of the cell where the user terminal is located, and obtains node information of all access network nodes in the coverage area of the cell where the user terminal is located.
  • the enhanced mapping table of the ANDSF entity stores node information of the wifi network, including access information SSID and BSSID of the access network. And coordinate information. Looking up the entry corresponding to the cell ID Ce ll _ ID1 in Table 1, it can be seen that the access network nodes in the cell where the user terminal is located have A, B, and C.
  • the user terminal compares coordinate information of a location where the user terminal is located, and coordinate information in node information of an access network node corresponding to a cell ID of a cell where the user terminal is located, to obtain an access network closest to the user terminal.
  • Node information for the node the node information of all access network nodes in the coverage area of the cell where the user terminal is located by the user terminal includes coordinate information of all access network nodes in the coverage area of the cell where the user terminal is located.
  • the user terminal compares the coordinate information of the location where the user is located with the coordinate information of all the nodes in the coverage of the cell in which the user is located, and obtains the node information of the access network node closest to the user terminal.
  • the coordinate information of the access network nodes A, B, and C in the node information of all the access network nodes A, B, and C in the coverage area of the cell Ce 1 1 _ ID1 where the user terminal is located is (3, 4), (6, 8), (5, 3).
  • the user terminal compares (3, 4), (6, 8), (5, 3) with the coordinates of the location of the user terminal (5, 5) one by one to obtain the distances of the access network nodes A, B, and C to the user terminal, respectively.
  • ⁇ , , 2 then the access network node closest to the user terminal can be obtained as C.
  • the ANDSF entity sends the node information of the access network node C to the user terminal according to the enhanced mapping table shown in Table 1.
  • the node information of the access network node A includes Wi-F i 3 ( SS ID), BS 3 (BSS ID) and coordinate information (3, 4) of the access network node C.
  • the user terminal searches for and accesses the access network node that is closest to the user terminal according to the access information of the access network in the node information of the access network node that is closest to the user terminal.
  • the user terminal searches for Wi-F i 3 and BS 3 according to the node information of the access network node C, and prepares for access.
  • the ANDSF entity receives the access request message sent by the user terminal, and obtains an enhanced mapping table according to the cell ID of the cell where the user terminal is located, which is carried in the access request message. And the node information of all the access network nodes in the coverage area of the cell where the user terminal is located; comparing the coordinate information of the location of the user terminal carried in the access request message with the access network in the coverage area of the cell where the user terminal is located And obtaining, by the coordinate information in the node information of the node, the node information of the access network node that is closest to the user terminal; and sending the node information of the access network node that is closest to the user terminal to the user terminal, so that the user terminal Searching for the access network closest to the user terminal Node, access.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • Embodiment 4 An embodiment of the present invention further provides an apparatus embodiment for implementing the steps and methods in the method embodiment shown in FIG.
  • An embodiment of the present invention provides an ANDSF entity, which is used to perform the method in the method embodiment shown in FIG. 3. As shown in FIG. 5, the ANDSF entity includes: a receiving unit 501, a searching unit 502, a comparing unit 503, and Transmitting unit 504.
  • the receiving unit 501 is configured to receive an access request message sent by the user terminal, where the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the searching unit 502 is configured to obtain, by using the enhanced mapping relationship table, the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located in the receiving unit, and the cell is stored in the enhanced mapping relationship table.
  • the node information of the access network node includes: access information and coordinate information of the access network.
  • the comparing unit 503 is configured to compare the coordinate information of the location of the user terminal, and obtain coordinate information in the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located, which is obtained by the searching unit 502 Node information of the access network node of the user terminal nearest to the user terminal.
  • the sending unit 504 is configured to send an access response message to the user terminal, where the access response message carries node information of an access network node that is obtained by the comparing unit 503 and is closest to the user terminal, so that The user terminal searches for an access network node that is closest to the user terminal to perform access.
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Access Network Info Request.
  • the embodiment of the present invention provides a user terminal, which is used to perform the method in the method embodiment shown in FIG. 3. As shown in FIG. 6, the user terminal includes: a sending unit 601, a receiving unit 602, and an access unit 603. .
  • the sending unit 601 is configured to send an access request message to the access network discovery and selection function ANDSF entity, where the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the receiving unit 602 is configured to receive the ANDSF entity And an access response message, where the access response message carries node information of an access network node that is closest to the user terminal.
  • the access unit 603 is configured to search for and access the access information according to the access information of the access network in the node information of the access network node that is closest to the user terminal that is received by the receiving unit 602. The nearest access network node of the user terminal.
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Ac ce s s s s s s s s s s s s.
  • the user terminal further includes an obtaining unit 604, configured to obtain coordinate information of a location where the user terminal is located before the sending unit 601 sends the access request message to the ANDSF entity.
  • the obtaining unit 604 is specifically configured to obtain coordinate information of a location where the user terminal is located by using an internal global positioning system (GPS), or obtain coordinate information of a location where the user terminal is located by using a wireless positioning technology.
  • GPS global positioning system
  • the ANDSF entity receives the access request message sent by the user terminal, and obtains the enhanced terminal mapping table according to the cell ID of the cell where the user terminal is located in the access request message to obtain the user terminal.
  • Node information of all the access network nodes in the coverage of the cell comparing the coordinate information of the location of the user terminal carried in the access request message with the node information of the access network node in the coverage area of the cell where the user terminal is located.
  • the coordinate information in the node information of the access network node closest to the user terminal is obtained; the node information of the access network node closest to the user terminal is sent to the user terminal, so that the user terminal can search for the The access network node closest to the user terminal is accessed.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • Embodiment 5 An embodiment of the present invention further provides an apparatus embodiment for implementing the steps and methods in the method embodiment shown in FIG.
  • the embodiment of the present invention provides a user terminal, which is used to perform the method in the method embodiment shown in FIG. 4.
  • the user terminal includes: an obtaining unit 701, a receiving unit 702, and a searching unit 7. 03. Comparison unit 7 04 and access unit 705.
  • the obtaining unit 701 is configured to obtain coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the receiving unit 702 is configured to receive an enhanced mapping relationship table sent by the access network discovery and selection function ANDSF entity, where the enhanced mapping relationship table stores small The correspondence between the cell ID of the area and the node information of the access network node in the cell, and the node information of the access network node includes: access information and coordinate information of the access network.
  • the searching unit 703 is configured to search for the enhanced mapping relationship table received by the receiving unit 702 to obtain node information of an access network node corresponding to a cell ID of a cell where the user terminal is located.
  • the comparing unit 704 is configured to compare the coordinate information of the location of the user terminal obtained by the obtaining unit 701, and the node information of the access network node corresponding to the cell ID of the cell where the user terminal is located obtained by the searching unit 703 The coordinate information in the obtained node information of the access network node closest to the user terminal.
  • the access unit 705 is configured to search for and access the access information according to the access information of the access network in the node information of the access network node that is closest to the user terminal obtained by the comparing unit 704. The nearest access network node of the user terminal.
  • the obtaining unit 701 is further configured to obtain coordinate information of a location where the user terminal is located by using an internal global positioning system (GPS), or obtain coordinate information of a location where the user terminal is located by using a wireless positioning technology.
  • GPS global positioning system
  • the receiving unit 702 is further configured to: before the obtaining unit 701 obtains the coordinate information of the location where the user terminal is located and the cell ID of the cell where the user terminal is located, the receiving the enhanced mapping relationship table sent by the A N D S F entity.
  • the ANDSF entity receives the access request message sent by the user terminal, and obtains the enhanced terminal mapping table according to the cell ID of the cell where the user terminal is located in the access request message to obtain the user terminal.
  • Node information of all the access network nodes in the coverage of the cell comparing the coordinate information of the location of the user terminal carried in the access request message with the node information of the access network node in the coverage area of the cell where the user terminal is located.
  • the coordinate information in the node information of the access network node closest to the user terminal is obtained; the node information of the access network node closest to the user terminal is sent to the user terminal, so that the user terminal can search for the The access network node closest to the user terminal is accessed.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • Embodiment 6 An embodiment of the present invention provides an ANDSF entity.
  • the sending unit in FIG. 5 may be a transmitter or a transceiver
  • the above receiving unit may be a receiver or a transceiver
  • the sending The unit and the receiving unit can be integrated to form a transceiver unit, which is implemented as a transceiver corresponding to hardware.
  • the above search unit and comparison unit may be in hardware form or software form Embedded in the processor of the base station.
  • the processor can be a central processing unit (CPU) or a microcontroller.
  • the ANDSF entity includes: a transmitter 801, a receiver 802, a memory 803, and a processor 804 connected to the transmitter 801, the receiver 802, and the memory 803, respectively.
  • the ANDSF entity may further include a common component such as a baseband processing component, a radio frequency processing component, and an input/output device.
  • a set of program codes is stored in the memory 803, and the processor 804 is configured to call the program code stored in the memory 803 to perform the following operations:
  • the processor 804 is configured to receive, by the receiver 802, an access request message sent by the user terminal, where the access request message includes coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the processor 804 is configured to search for an enhanced mapping relationship table to obtain node information of an access network node corresponding to a cell ID of a cell where the user terminal is located, where the enhanced mapping relationship table stores a cell ID and a cell of the cell.
  • the node information of the access network node in the cell includes: access information and coordinate information of the access network.
  • the processor 804 is configured to compare coordinate information of a location where the user terminal is located, coordinate information in node information of an access network node corresponding to a cell ID of a cell where the user terminal is located, and obtain the latest information from the user terminal. Node information of the access network node.
  • the processor 804 is configured to send, by using the transmitter 801, an access response message to the user terminal, where the access response message carries the node information of the access network node that is closest to the user terminal, to The user terminal is caused to search for an access network node that is closest to the user terminal to perform access.
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Access Network Info Request.
  • the embodiment of the present invention further provides a user terminal.
  • the sending unit in FIG. 6 may be a transmitter or a transceiver
  • the receiving unit may be a receiver or a transceiver
  • the sending unit and the receiving unit are It can be integrated to form a transceiver unit, which is implemented as a transceiver corresponding to hardware.
  • the above access unit can be embedded in the processor of the base station in hardware or software.
  • the processor can be a central processing unit (CPU) or a microcontroller.
  • the user terminal includes: a transmitter 901, a receiver 902, a memory 903, and a processor 904 connected to the transmitter 901, the receiver 902, and the memory 903, respectively.
  • the user terminal may further include a common component such as a baseband processing component, a radio frequency processing component, and an input/output device.
  • a baseband processing component such as a baseband processing component, a radio frequency processing component, and an input/output device.
  • the memory A set of program codes is stored in 903, and the processor 904 is configured to call the program code stored in the memory 903 to perform the following operations:
  • the processor 904 is configured to send, by using the transmitter 013, an access request message to the access network discovery and selection function ANDSF entity, where the access request message includes coordinate information of a location where the user terminal is located, and a cell of the cell where the user terminal is located. ID.
  • the processor 904 is configured to receive, by the receiver 902, an access response message sent by the ANDSF entity, where the access response message carries node information of an access network node that is closest to the user terminal.
  • the processor 904 is configured to search for and access the latest connection from the user terminal according to the access information of the access network in the node information of the access network node that is closest to the user terminal. Network node.
  • the access request message is a medium access control MAC message, a radio resource control RRC message, or an Ac ce s s s s s s s s s s s s.
  • the processor 904 is further configured to obtain coordinate information of a location where the user terminal is located before sending the access request message to the ANDSF entity by using the transmitter 901.
  • the obtaining unit 604 is specifically configured to obtain coordinate information of a location where the user terminal is located by using an internal global positioning system (GPS), or obtain coordinate information of a location where the user terminal is located by using a wireless positioning technology.
  • GPS global positioning system
  • the ANDSF entity receives the access request message sent by the user terminal, and obtains the enhanced terminal mapping table according to the cell ID of the cell where the user terminal is located in the access request message to obtain the user terminal.
  • Node information of all the access network nodes in the coverage of the cell comparing the coordinate information of the location of the user terminal carried in the access request message with the node information of the access network node in the coverage area of the cell where the user terminal is located.
  • the coordinate information in the node information of the access network node closest to the user terminal is obtained; the node information of the access network node closest to the user terminal is sent to the user terminal, so that the user terminal can search for the The access network node closest to the user terminal is accessed.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • the sending unit in FIG. 7 may be a transmitter or a transceiver, and the foregoing receiving unit may be a receiver or a transceiver, and the sending unit and the receiving unit may be used.
  • Integrated to form a transceiver unit which is implemented as a transceiver corresponding to hardware.
  • the above obtaining unit, searching unit, comparing unit and access unit can be hard
  • the form or software form is embedded in the processor of the base station.
  • the processor can be a central processing unit (CPU) or a microcontroller.
  • the user terminal includes: a receiver 1001, a memory 1 002, and a processor 1003 connected to the receiver 1 001 and the memory 1002, respectively.
  • the user terminal may further include a common component such as a baseband processing component, a radio frequency processing component, and an input/output device.
  • the embodiment of the present invention does not impose any limitation herein.
  • the memory 1002 stores a set of program codes
  • the processor 1003 is configured to call the program code stored in the memory 1002 to perform the following operations:
  • the processor 1 003 is configured to obtain coordinate information of a location where the user terminal is located and a cell ID of a cell where the user terminal is located.
  • the processor 1003 is configured to receive, by the receiver 001, an enhanced mapping relationship table sent by the access network discovery and selection function ANDSF entity, where the enhanced mapping relationship table stores the cell ID of the cell and the connection in the cell
  • the node information of the access network node includes: access information and coordinate information of the access network.
  • the processor 1003 is configured to search the enhanced mapping relationship table to obtain node information of an access network node corresponding to a cell ID of a cell where the user terminal is located.
  • the processor 1003 is configured to compare the obtained coordinate information of the location of the user terminal, and obtain coordinate information in the node information of the access network node corresponding to the obtained cell ID of the cell where the user terminal is located.
  • the processor 1 003 is configured to search for and access the closest to the user terminal according to the obtained access information of the access network in the node information of the access network node that is closest to the user terminal. Access network node.
  • the processor 1003 is further configured to obtain coordinate information of a location where the user terminal is located by using an internal global positioning system (GPS), or obtain coordinate information of a location where the user terminal is located by using a wireless positioning technology.
  • GPS global positioning system
  • the processor 1003 is further configured to: before obtaining the coordinate information of the location where the user terminal is located and the cell ID of the cell where the user terminal is located, receive, by the receiver 1 001, an enhanced mapping relationship table sent by the ANDSF entity.
  • the ANDSF entity receives the access request message sent by the user terminal, and obtains the enhanced terminal mapping table according to the cell ID of the cell where the user terminal is located in the access request message to obtain the user terminal.
  • Node information of all the access network nodes in the coverage of the cell comparing the coordinate information of the location of the user terminal carried in the access request message with the node information of the access network node in the coverage area of the cell where the user terminal is located.
  • the coordinate information in the obtained node information of the access network node closest to the user terminal Transmitting the node information of the access network node that is closest to the user terminal to the user terminal, so that the user terminal can search for the access network node that is closest to the user terminal to perform access.
  • the access network selection method provided by the embodiment of the present invention reduces the user terminal to the access network node.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

本发明的实施例提供了一种接入网选择方法及装置,涉及通信领域。所述方法包括:接收用户终端发送的接入请求消息,接入请求消息中包括用户终端所在位置的坐标信息和用户终端所在小区的小区ID;查找增强映射关系表获得用户终端所在小区的小区ID对应的接入网节点的节点信息;比较用户终端所在位置的坐标信息,与用户终端所在小区的小区ID对应的接入网节点的节点信息中的坐标信息,获得离用户终端最近的接入网节点的节点信息;向用户终端发送接入响应消息。

Description

一种接入网选择方法及装置
技术领域 本发明涉及通信领域, 尤其涉及一种接入网选择方法及装置。
背景技术
在当前的网络架构下, 在核心网配置 ANDSF ( Access Network Discovery Support Functions , 接入网发现和选择功能)实体, 提供了 一种根据运营商策略为用户终端选择目标接入网的模式。 ANDSF实体通过 核心网与用户终端的交互协同, 实现智能选网。 现有的 ANDSF 实体内存 储有映射关系表,该表存储了 3GPP网络覆盖范围内的所有小区的小区 ID、 与每个小区内部署的多个接入网节点的标识信息之间的对应关系, 其中 标 i只信息为 SSID( Service Set Identifier,月良务集标 i只)和 BSSID( Basic Service Set Identifier, 基本月良务集标 i只 ) 。 当前网络端通过 ANDSF实体单元来指示 UE对接入网进行智能选择。 具体步骤包括: 用户终端确定当前所在小区的小区 ID, 并将该小区 ID发 送给核心网, 核心网的 ANDSF 实体查询映射关系表中与用户终端发送的 小区 ID对应的表项, 获得用户终端当前所在小区内存在的各个接入网节 点的标识信息, 并将所述标识信息发送给用户终端, 用户终端就可以根 据这些标识信息尝试搜索其对应的各个接入网节点为接入做准备。 在上述过程中, 由于小区覆盖范围很大, 最大支持 100km。 因此在 某小区覆盖范围内会存在大量的接入网节点, 如果用户终端对该小区内 的所有的接入网节点都进行搜索, 会使得用户终端功耗大大增加。
发明内容 本发明的实施例提供一种接入网选择方法及装置, 可以减少用户终 端对接入网节点的搜索量, 降低用户终端的功耗。 为达到上述目的, 本发明的实施例釆用如下技术方案: 第一方面, 公开了一种接入网选择方法, 包括: 接收用户终端发送的接入请求消息, 所述接入请求消息中包括所述 用户终端所在位置的坐标信息和所述用户终端所在小区的小区 I D; 查找增强映射关系表获得所述用户终端所在小区的小区 ID 对应的 接入网节点的节点信息, 其中, 所述增强映射关系表中存储有小区的小 区 I D与所述小区内的接入网节点的节点信息的对应关系, 所述接入网节 点的节点信息包括: 接入网的接入信息和坐标信息; 比较所述用户终端所在位置的坐标信息, 与所述用户终端所在小区 的小区 ID对应的接入网节点的节点信息中的坐标信息, 获得离所述用户 终端最近的接入网节点的节点信息; 向所述用户终端发送接入响应消息, 所述接入响应消息中携带有离 所述用户终端最近的接入网节点的节点信息, 以使得所述用户终端搜索 离所述用户终端最近的接入网节点, 进行接入。 结合第一方面, 在第一种可能的实现方式中, 所述接入请求消息为 介质访问控制 MAC消息、 无线资源控制 RRC消息或 Acces s Ne twork Info Reques t。 第二方面, 公开了一种接入网选择方法, 包括: 向接入网发现和选择功能 ANDSF 实体发送接入请求消息, 所述接入 请求消息包括用户终端所在位置的坐标信息和所述用户终端所在小区的 小区 ID; 接收所述 ANDSF 实体发送的接入响应消息, 所述接入响应消息中携 带有离所述用户终端最近的接入网节点的节点信息; 根据所述离所述用户终端最近的接入网节点的节点信息中的接入网 的接入信息, 搜索并接入所述离所述用户终端最近的接入网节点。
结合第二方面, 在第一种可能的实现方式中, 所述接入请求消息为 介质访问控制 MAC消息、 无线资源控制 RRC消息或 Acces s Ne twork Info Reques t消息。
结合第二方面或第二方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 在向 ANDSF实体发送所述接入请求消息之前, 所述方法, 还包括: 获得所述用户终端所在位置的坐标信息。 结合第二方面的第二种可能的实现方式, 在第三种可能的实现方式 中, 所述获得所述用户终端所在位置的坐标信息, 具体包括: 通过内部的全球定位系统 GPS来获得所述用户终端所在位置的坐标 信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐标信息。
第三方面, 公开了一种接入网选择方法, 包括: 获得用户终端所在位置的坐标信息和所述用户终端所在小区的小区
I D; 接收接入网发现和选择功能 ANDSF 实体发送的增强映射关系表, 所 述增强映射关系表中存储有小区的小区 I D与所述小区内的接入网节点的 节点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入 信息和坐标信息; 查找所述增强映射关系表获得所述用户终端所在小区的小区 ID 对 应的接入网节点的节点信息; 比较所述用户终端所在位置的坐标信息, 与所述用户终端所在小区 的小区 ID对应的接入网节点的节点信息中的坐标信息, 获得离所述用户 终端最近的接入网节点的节点信息; 根据所述离所述用户终端最近的接入网节点的节点信息中的接入网 的接入信息, 搜索并接入所述离所述用户终端最近的接入网节点。 结合第三方面, 在第一种可能的实现方式中, 所述获得用户终端所 在位置的坐标信息, 具体包括: 通过内部的全球定位系统 GPS来获得所述用户终端所在位置的坐标 信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐标信息。
第四方面, 公开了一种接入网发现和选择功能 ANDSF实体, 包括: 接收单元, 用于接收用户终端发送的接入请求消息, 所述接入请求 消息中包括所述用户终端所在位置的坐标信息和所述用户终端所在小区 的小区 ID; 查找单元, 用于查找增强映射关系表获得所述接收单元接收的所述 用户终端所在小区的小区 I D对应的接入网节点的节点信息, 其中, 所述 增强映射关系表中存储有小区的小区 ID与所述小区内的接入网节点的节 点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入信 息和坐标信息; 比较单元, 用于比较所述用户终端所在位置的坐标信息, 与所述查 找单元获得的所述用户终端所在小区的小区 ID对应的接入网节点的节点 信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节点信息; 发送单元, 用于向所述用户终端发送接入响应消息, 所述接入响应 消息中携带有所述比较单元获得的离所述用户终端最近的接入网节点的 节点信息, 以使得所述用户终端搜索离所述用户终端最近的接入网节点, 进行接入。 结合第四方面, 在第一种可能的实现方式中, 所述接入请求消息为 介质访问控制 MAC消息、 无线资源控制 RRC消息或 Acces s Ne twork Info Reques t。 第五方面, 公开了一种用户终端, 包括: 发送单元, 用于向接入网发现和选择功能 ANDSF 实体发送接入请求 消息, 所述接入请求消息包括用户终端所在位置的坐标信息和所述用户 终端所在小区的小区 ID; 接收单元, 用于接收所述 ANDSF 实体发送的接入响应消息, 所述接 入响应消息中携带有离所述用户终端最近的接入网节点的节点信息; 接入单元, 用于根据所述接收单元接收的所述离所述用户终端最近 的接入网节点的节点信息中的接入网的接入信息, 搜索并接入所述离所 述用户终端最近的接入网节点。 结合第五方面, 在第一种可能的实现方式中, 所述接入请求消息为 介质访问控制 MAC消息、 无线资源控制 RRC消息或 Acces s Ne twork Info Reques t。 结合第五方面或第五方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 还包括获得单元, 所述获得单元, 用于在所述发送单元向 ANDSF 实体发送所述接入请 求消息之前, 获得所述用户终端所在位置的坐标信息。 结合第五方面或第五方面的第二种可能的实现方式, 在第三种可能 的实现方式中, 所述获得单元具体用于, 通过内部的全球定位系统 GPS 来获得所述用户终端所在位置的坐标信息, 或者釆用无线定位技术获得 所述用户终端所在位置的坐标信息。
第六方面, 公开了一种用户终端, 包括: 获得单元, 用于获得用户终端所在位置的坐标信息和所述用户终端 所在小区的小区 ID; 接收单元, 用于接收接入网发现和选择功能 ANDSF 实体发送的增强 映射关系表, 所述增强映射关系表中存储有小区的小区 ID与所述小区内 的接入网节点的节点信息的对应关系 , 所述接入网节点的节点信息包括: 接入网的接入信息和坐标信息; 查找单元, 用于查找所述接收单元接收的所述增强映射关系表获得 所述用户终端所在小区的小区 ID对应的接入网节点的节点信息; 比较单元, 用于比较所述获得单元获得的所述用户终端所在位置的 坐标信息, 与所述查找单元获得的所述用户终端所在小区的小区 I D对应 的接入网节点的节点信息中的坐标信息, 获得离所述用户终端最近的接 入网节点的节点信息; 接入单元, 用于根据所述比较单元获得的所述离所述用户终端最近 的接入网节点的节点信息中的接入网的接入网信息, 搜索并接入所述离 所述用户终端最近的接入网节点。 结合第六方面, 在第一种可能的实现方式中, 所述获得单元还用于, 通过内部的全球定位系统 GPS来获得所述用户终端所在位置的坐标信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐标信息。 结合第六方面, 在第二种可能的实现方式中, 所述接收单元还用于, 在所述获得单元获得用户终端所在位置的坐标信息和所述用户终端所在 小区的小区 ID之前, 接收所述 ANDSF实体发送的增强映射关系表。 本发明实施例提供的接入网选择方法及装置, ANDSF 实体接收到用 户终端发送的接入请求消息, 根据所述接入请求消息中携带的所述用户 终端所在小区的小区 ID查找增强映射表获得所述用户终端所在小区覆盖 范围内所有接入网节点的节点信息; 比较所述接入请求消息中携带的所 述用户终端所在位置的坐标信息和所述用户终端所在小区覆盖范围内的 接入网节点的节点信息中的坐标信息, 获得离所述用户终端最近的接入 网节点的节点信息; 将所述离所述用户终端最近的接入网节点的节点信 息发送给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的 接入网节点, 进行接入。 与现有技术中的获得用户终端所在小区覆盖范 围内的所有接入网节点, 搜索所有接入网节点相比, 本发明实施例提供 的接入网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终 端的功耗。
附图说明 图 1为本发明的实施例 1提供的一种接入网选择方法流程示意图; 图 2为本发明的实施例 1提供的另一种接入网选择方法流程示意图; 图 3为本发明的实施例 2提供的一种接入网选择方法流程示意图; 图 4为本发明的实施例 3提供的一种接入网选择方法流程示意图; 图 5为本发明的实施例 4提供的一种 ANDSF实体的结构框图; 图 6为本发明的实施例 4提供的一种用户终端的结构框图; 图 7为本发明的实施例 5提供的一种用户终端的结构框图; 图 8为本发明的实施例 6提供的一种 ANDSF实体的结构框图; 图 9为本发明的实施例 6提供的一种用户终端的结构框图; 图 1 0为本发明的实施例 7提供的一种用户终端的结构框图。
具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案 进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实 施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术 人员在没有做出创造性劳动前提下所获得的所有其他实施例, 都属于本 发明保护的范围。 实施例 1 : 本发明实施例提供了一种接入网选择方法,执行主体是 ANDSF实体, 如图 1所示, 所述方法包括以下步骤:
101、 接收用户终端发送的接入请求消息。 这里, 所述接入请求消息中包括所述用户终端所在位置的坐标信息 和所述用户终端所在小区的小区 ID。 其中, 所述用户终端所在位置的坐 标信息是所述用户终端在发送所述接入请求消息之前获得的, 并通过所 述接入请求消息发送给 ANDSF实体。 当 ANDSF 实体架设在居民接入网侧时, 接收所述接入请求消息的网 络端就为居民接入网, 这时所述接入请求消息为 MAC ( Media Access Control, 介质访问控制) 消息, 或者 RRC ( Radio Resource Control, 无线资源控制) 消息; 当 ANDSF 实体架设在核心网侧时, 接收所述接入 请求消息的网络端就为核心网, 这时所述接入请求消息可以为 Access Network Info Request。
102、 查找增强映射关系表获得所述用户终端所在小区的小区 ID对 应的接入网节点的节点信息。 其中,所述增强映射关系表中存储有小区的小区 I D与所述小区内的 接入网节点的节点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入信息和坐标信息, 并且 ANDSF 实体内存储有所述增强映射 关系表。 这里, ANDSF 实体接收所述用户终端发送的接入请求消息后, 首先 根据所述接入请求消息中包括的所述用户终端所在小区的小区 ID查找所 述增强映射关系表, 获得所述用户终端所在小区覆盖范围内的所有接入 网节点的节点信息。
103、 比较所述用户终端所在位置的坐标信息, 与所述用户终端所在 小区的小区 ID对应的接入网节点的节点信息中的坐标信息, 获得离所述 用户终端最近的接入网节点的节点信息。
这里, 所述 ANDSF 实体获得的用户终端所在小区覆盖范围内的所有 接入网节点的节点信息中包括用户终端所在小区覆盖范围内的所有接入 网节点的坐标信息。 所述 ANDSF 实体对所述用户终端所在位置的坐标信 息和用户终端所在小区覆盖范围内的所有节点的坐标信息进行——比 较, 获得离所述用户终端最近的接入网节点的节点信息。 1 04、 向所述用户终端发送接入响应消息。 这里, 所述接入响应消息中携带有步骤 1 03 中获得的离所述用户终 端最近的接入网节点的节点信息, 以使得所述用户终端搜索离所述用户 终端最近的接入网节点, 进行接入。 本发明实施例提供了一种接入网选择方法, 执行主体是用户终端, 如图 2所示, 所述方法包括以下步骤:
201、 向 ANDSF实体发送接入请求消息。 这里, 所述接入请求消息包括用户终端所在位置的坐标信息和所述 用户终端所在小区的小区 ID。 所述接入请求消息包括用户终端所在位置的坐标信息和所述用户终 端所在小区的小区 ID。 在所述用户终端向网络端的 ANDSF实体发送接入 请求消息之前, 所述用户终端首先通过内部的全球定位系统 GPS 或者釆 用无线定位技术来获得所述用户终端所在位置的坐标信息。 当接收所述 接入请求消息的网络端为居民接入网时, 所述接入请求消息为介质访问 控制 MAC消息、 无线资源控制 RRC消息。 当接收所述接入请求消息的网 络端为核心网时, 所述接入请求消息为 Acces s Ne twork Info Reque s t。
202、 接收所述 ANDSF实体发送的接入响应消息。 所述接入响应消息中携带有离所述用户终端最近的接入网节点的节 点信息, 所述接入网节点的节点信息包括: 接入网的接入信息和坐标信 息。
203、根据所述离所述用户终端最近的接入网节点的节点信息中的接 入网的接入信息,搜索并接入所述离所述用户终端最近的接入网节点。 本发明实施例提供的接入网选择方法, ANDSF 实体接收到用户终端 发送的接入请求消息, 根据所述接入请求消息中携带的所述用户终端所 在小区的小区 ID查找增强映射表获得所述用户终端所在小区覆盖范围内 所有接入网节点的节点信息; 比较所述接入请求消息中携带的所述用户 终端所在位置的坐标信息和所述用户终端所在小区覆盖范围内的接入网 节点的节点信息中的坐标信息, 获得离所述用户终端最近的接入网节点 的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送 给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网 节点, 进行接入。 与现有技术中的获得用户终端所在小区覆盖范围内的 所有接入网节点, 搜索所有接入网节点相比, 本发明实施例提供的接入 网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功 耗。
实施例 2: 本发明实施例提供了一种接入网选择方法, 如图 3所示, 所述方法 包括以下步骤:
301、 获得所述用户终端所在位置的坐标信息。 所述用户终端主要通过两种方法获得其所在位置的坐标信息, 一是 通过内部的全球定位系统 GPS来获得所述用户终端所在位置的坐标信息, 或者可以釆用 0TD0A (Observed Time Difference of Arrival, 到达时间 差定位法)、 CID、 RFPM等无线定位技术获得所述用户终端所在位置的坐 标信息。 其中, 所述 0TD0A技术是用户终端向三个基站发送信号, 然后再 根据信号到达三个基的时间差值进行定位。 示例的, 所述用户终端获得其所在位置的坐标信息为 ( 2, 5 ) 。
302、 用户终端向 ANDSF实体发送接入请求消息。 这里, 所述接入请求消息包括用户终端所在位置的坐标信息和所述 用户终端所在小区的小区 ID。
303、 所述 ANDSF实体接收用户终端发送的接入请求消息, 并查找增 强映射关系表获得所述用户终端所在小区的小区 ID对应的接入网节点的 节点信息。
其中,所述增强映射关系表中存储有小区的小区 I D与所述小区内的 接入网节点的节点信息的对应关系。 若所述接入网为 wifi 网络, 则所述 接入网的接入信息包括 SSID和 BSSID, 所述接入网节点的节点信息包括 SSID、 BSSID和 坐标信息。 其中, 所述 SSID指的是 wifi接入节点的唯 一标识 ID, 所述 BSSID指的是基本服务装置 BSS的标识 ID。 这里, ANDSF实体接收用户终端发送的接入请求消息包括两种情况, 若所述 ANDSF 实体架设在核心网侧, 则用户终端发送的接入请求消息为 Access Network Info Request; 若所述 ANDSF实体架设在居民接入网侧, 则用户终端发送的接入请求消息为 MAC消息或 RRC消息。 示例的, 如表 1所示, 当所述接入网为 wifi 网络时, 所述 ANDSF实 体中的增强映射表中存储有 wifi 网络的节点信息, 包括接入网的接入信 息 SSID和 BSSID以及坐标信息。
Figure imgf000012_0001
表 1
若所述 ANDSF 实体接收到的接入请求消息中用户终端所在小区的小 区 ID为 Cell_IDl,在表 1所示的增强映射表中,查找与 Cell_IDl对应的 表项,可知用户终端所在小区 Ce 11 _ ID1覆盖范围内的接入网节点有 A、 B、 C, 并且可获得接入网节点 、 B、 C的节点信息。
304、 所述 ANDSF实体比较所述用户终端所在位置的坐标信息, 与所 述用户终端所在小区的小区 ID对应的接入网节点的节点信息中的坐标信 息, 获得离所述用户终端最近的接入网节点的节点信息。
示例的, 在表 1所示的增强映射表中, 用户终端所在小区 Cell_IDl 覆盖范围内的所有接入网节点 A、 B、 C的节点信息中接入网节点 A、 B、 C 的坐标信息分别为( 3, 4 )、 (6, 8 )、 ( 5, 3 )。 ANDSF实体逐一比较( 3, 4 )、 ( 6, 8 ) 、 ( 5, 3)与用户终端所在位置的坐标( 2,5 )得到接入网节点 、 B、 C到用户终端的距离分别为^、 25 , l3, 于是可以得到距离所述用 户终端最近的接入网节点为 A。这样所述 ANDSF实体在查询表 1所示的增 强映射表, 将接入网节点为 A 的节点信息发送给所述用户终端, 其中接 入网节点 A的节点信息包括 Wi-Fil ( SSID) 、 BS1 ( BSSID) 和接入网节 点 A的坐标信息 ( 3, 4 ) 。
305、 所述 ANDSF实体向所述用户终端发送接入响应消息。 这里, 所述接入响应消息中携带有离所述用户终端最近的接入网节 点的节点信息, 以使得所述用户终端搜索离所述用户终端最近的接入网 节点, 进行接入。
示例的, 所述 ANDSF 实体向所述用户终端发送的接入响应消息包括 离所述用户终端最近的接入网节点 Α 的节点信息, 即所述接入响应消息 包括: Wi-F i 1、 BS 1和坐标信息 ( 3, 4 ) 。
306、 所述用户终端接收所述 ANDSF实体发送的接入响应消息, 根据 所述离所述用户终端最近的接入网节点的节点信息中的接入网的接入信 息,搜索并接入所述离所述用户终端最近的接入网节点。 示例的, 所述用户终端接收所述接入响应消息, 并根据所述接入响 应消息中包括的接入网节点 A的节点信息搜索 Wi-F i l和 BS 1 ,准备接入。 本发明实施例提供的接入网选择方法, ANDSF 实体接收到用户终端 发送的接入请求消息, 根据所述接入请求消息中携带的所述用户终端所 在小区的小区 ID查找增强映射表获得所述用户终端所在小区覆盖范围内 所有接入网节点的节点信息; 比较所述接入请求消息中携带的所述用户 终端所在位置的坐标信息和所述用户终端所在小区覆盖范围内的接入网 节点的节点信息中的坐标信息, 获得离所述用户终端最近的接入网节点 的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送 给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网 节点, 进行接入。 与现有技术中的获得用户终端所在小区覆盖范围内的 所有接入网节点, 搜索所有接入网节点相比, 本发明实施例提供的接入 网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功 耗。 实施例 3 : 本发明实施例提供了一种接入网选择方法, 如图 4所示, 所述方法 包括以下步骤:
401、获得用户终端所在位置的坐标信息和所述用户终端所在小区的 小区 ID。 其中,所述用户终端首先通过内部的全球定位系统 GPS或者釆用无线 定位技术来获得所述用户终端所在位置的坐标信息。 这里, 用户终端主 要通过两种方法获得其所在位置的坐标信息, 一是通过内部的全球定位 系统 GPS来获得所述用户终端所在位置的坐标信息, 或者可以釆用 OTDOA (Observed Time Difference of Arrival , 到达时间差定位法)、 CID、 RFPM等无线定位技术获得所述用户终端所在位置的坐标信息。其中, 所述 0TD0A技术是用户终端向三个基站发送信号, 然后再根据信号到达三 个基的时间差值进行定位。 示例的, 所述用户终端获得其所在位置的坐 标信息为 (5, 5 ) , 获得所述用户终端所在小区的小区 ID为 Cell_IDl。 在所述用户终端获得自身所在位置的坐标信息和所述用户终端所在 小区的小区 ID之前, ANDSF实体首先会向用户终端发送增强映射关系表。 所述 ANDSF 实体向用户终端发送增强映射关系表包括两种情况, 一是所 述 ANDSF 实体定时地向用户终端发送增强映射关系表, 一种是 ANDSF 实 体接收用户终端发送的请求后再向用户终端发送增强映射关系表。
其中,所述增强映射关系表中存储有小区的小区 ID与所述小区内的 接入网节点的节点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入信息和坐标信息。 若所述接入网是 wifi 网络, 则所述接入 网的接入信息包括 SSID 和 BSSID, 所述接入网节点的节点信息包括: SSID、 BSSID和坐标信息, 所述 SSID指的是 wifi接入节点的唯一标识 ID, 所述 BSSID指的是基本服务装置 BSS的标识 ID。
402、 用户终端接收 ANDSF实体发送的增强映射关系表。 用户终端获得自己的坐标信息及当前所在小区的小区 ID 后, 接收 ANDSF实体发送的增强映射关系表,这样用户终端就不用同 ANDSF实体进 行交互信令, 可以在内部直接查询, 进而就可以接入到某个节点上。
403、用户终端查找所述增强映射关系表获得所述用户终端所在小区 的小区 ID对应的接入网节点的节点信息。 用户终端会根据所述用户终端所在小区的小区 ID 查找所述增强映 射关系表, 获得所述用户终端所在小区覆盖范围内的所有接入网节点的 节点信息。
示例的, 如表 1所示, 当所述接入网是 wifi 网络时, 所述 ANDSF实 体的增强映射表中存储有所述 wifi 网络的节点信息, 包括接入网的接入 信息 SSID和 BSSID以及坐标信息。 查找表 1 中与小区 ID Ce l l _ IDl对应的表项, 可知用户终端所在小 区内的接入网节点有 A、 B、 C。
404、 用户终端比较所述用户终端所在位置的坐标信息, 与所述用户 终端所在小区的小区 ID对应的接入网节点的节点信息中的坐标信息, 获 得离所述用户终端最近的接入网节点的节点信息。 这里, 所述用户终端获得的用户终端所在小区覆盖范围内的所有接 入网节点的节点信息中包括用户终端所在小区覆盖范围内的所有接入网 节点的坐标信息。 所述用户终端对自己所在位置的坐标信息和自己所在 小区覆盖范围内的所有节点的坐标信息进行一一比较, 获得离所述用户 终端最近的接入网节点的节点信息。
示例的,用户终端所在小区 Ce 1 1 _ ID1覆盖范围内的所有接入网节点 A、 B、 C的节点信息中接入网节点 A、 B、 C的坐标信息分别为 ( 3, 4 ) 、 ( 6, 8 ) 、 ( 5, 3 ) 。 用户终端逐一比较( 3, 4 ) 、 (6, 8 ) 、 (5, 3 ) 与用 户终端所在位置的坐标 ( 5, 5 )得到接入网节点 A、 B、 C到用户终端的距 离分别为^、 、 2 , 于是可以得到距离所述用户终端最近的接入网节 点为 C。 这样所述 ANDSF实体在查询表 1所示的增强映射表, 将接入网节 点为 C的节点信息发送给所述用户终端, 其中接入网节点 A的节点信息 包括 Wi-F i 3 ( SS ID ) , BS 3 ( BSS ID )和接入网节点 C的坐标信息( 3, 4 ) 。
405、用户终端根据所述离所述用户终端最近的接入网节点的节点信 息中的接入网的接入信息,搜索并接入所述离所述用户终端最近的接入 网节点。
示例的,所述用户终端根据接入网节点 C的节点信息搜索 Wi-F i 3和 BS 3 , 准备接入。
本发明实施例提供的接入网选择方法, ANDSF 实体接收到用户终端 发送的接入请求消息, 根据所述接入请求消息中携带的所述用户终端所 在小区的小区 ID查找增强映射表获得所述用户终端所在小区覆盖范围内 所有接入网节点的节点信息; 比较所述接入请求消息中携带的所述用户 终端所在位置的坐标信息和所述用户终端所在小区覆盖范围内的接入网 节点的节点信息中的坐标信息, 获得离所述用户终端最近的接入网节点 的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送 给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网 节点, 进行接入。 与现有技术中的获得用户终端所在小区覆盖范围内的 所有接入网节点, 搜索所有接入网节点相比, 本发明实施例提供的接入 网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功 耗。
实施例 4: 本发明实施例进一步给出实现图 3所示的方法实施例中各步骤及方 法的装置实施例。 本发明实施例提供了一种 ANDSF实体, 用于执行图 3所示的方法实 施例中的方法, 如图 5所示, 所述 ANDSF实体包括: 接收单元 501、 查找 单元 502、 比较单元 503和发送单元 504。
接收单元 501, 用于接收用户终端发送的接入请求消息, 所述接入 请求消息中包括所述用户终端所在位置的坐标信息和所述用户终端所在 小区的小区 ID。 查找单元 502, 用于查找增强映射关系表获得所述接收 单元接收 501的所述用户终端所在小区的小区 ID对应的接入网节点的节 点信息, 其中, 所述增强映射关系表中存储有小区的小区 ID与所述小区 内的接入网节点的节点信息的对应关系, 所述接入网节点的节点信息包 括: 接入网的接入信息和坐标信息。 比较单元 503, 用于比较所述用户终 端所在位置的坐标信息, 与所述查找单元 502 获得的所述用户终端所在 小区的小区 ID对应的接入网节点的节点信息中的坐标信息, 获得离所述 用户终端最近的接入网节点的节点信息。 发送单元 504, 用于向所述用户 终端发送接入响应消息, 所述接入响应消息中携带有所述比较单元 503 获得的离所述用户终端最近的接入网节点的节点信息, 以使得所述用户 终端搜索离所述用户终端最近的接入网节点, 进行接入。
其中, 所述接入请求消息为介质访问控制 MAC消息、 无线资源控制 RRC消息或 Access Network Info Request。 本发明实施例提供了一种用户终端, 用于执行图 3所示的方法实施 例中的方法, 如图 6所示, 所述用户终端包括: 发送单元 601、 接收单元 602、 接入单元 603。
发送单元 601, 用于向接入网发现和选择功能 ANDSF 实体发送接入 请求消息, 所述接入请求消息包括用户终端所在位置的坐标信息和所述 用户终端所在小区的小区 ID。 接收单元 602, 用于接收所述 ANDSF 实体 发送的接入响应消息, 所述接入响应消息中携带有离所述用户终端最近 的接入网节点的节点信息。 接入单元 603 , 用于根据所述接收单元 602接 收的所述离所述用户终端最近的接入网节点的节点信息中的接入网的接 入信息, 搜索并接入所述离所述用户终端最近的接入网节点。
其中, 所述接入请求消息为介质访问控制 MAC消息、 无线资源控制 RRC消息或 Ac ce s s Ne twor k I nf o Reque s t。
所述用户终端还包括获得单元 604 , 所述获得单元 604 用于, 在所 述发送单元 601 向 ANDSF 实体发送所述接入请求消息之前, 获得所述用 户终端所在位置的坐标信息。
所述获得单元 604具体用于, 通过内部的全球定位系统 GPS来获得 所述用户终端所在位置的坐标信息, 或者釆用无线定位技术获得所述用 户终端所在位置的坐标信息。
本发明实施例提供的装置, ANDSF 实体接收到用户终端发送的接入 请求消息, 根据所述接入请求消息中携带的所述用户终端所在小区的小 区 I D查找增强映射表获得所述用户终端所在小区覆盖范围内所有接入网 节点的节点信息; 比较所述接入请求消息中携带的所述用户终端所在位 置的坐标信息和所述用户终端所在小区覆盖范围内的接入网节点的节点 信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网节点, 进行接 入。 与现有技术中的获得用户终端所在小区覆盖范围内的所有接入网节 点, 搜索所有接入网节点相比, 本发明实施例提供的接入网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功耗。
实施例 5 : 本发明实施例进一步给出实现图 4所示的方法实施例中各步骤及方 法的装置实施例。
本发明实施例提供了一种用户终端, 用于执行图 4 所示的方法实施 例中的方法, 如图 7所示, 所述用户终端包括: 获得单元 701、 接收单元 7 02、 查找单元 7 03、 比较单元 7 04和接入单元 7 05。
获得单元 701 , 用于获得用户终端所在位置的坐标信息和所述用户 终端所在小区的小区 I D。 接收单元 702 , 用于接收接入网发现和选择功 能 ANDSF 实体发送的增强映射关系表, 所述增强映射关系表中存储有小 区的小区 I D与所述小区内的接入网节点的节点信息的对应关系, 所述接 入网节点的节点信息包括:接入网的接入信息和坐标信息。查找单元 703 , 用于查找所述接收单元 702 接收的所述增强映射关系表获得所述用户终 端所在小区的小区 ID对应的接入网节点的节点信息。 比较单元 704 , 用 于比较所述获得单元 701 获得的所述用户终端所在位置的坐标信息, 与 所述查找单元 703获得的所述用户终端所在小区的小区 ID对应的接入网 节点的节点信息中的坐标信息, 获得离所述用户终端最近的接入网节点 的节点信息。 接入单元 705 , 用于根据所述比较单元 704获得的所述离所 述用户终端最近的接入网节点的节点信息中的接入网的接入信息, 搜索 并接入所述离所述用户终端最近的接入网节点。
所述获得单元 701还用于, 通过内部的全球定位系统 GPS来获得所 述用户终端所在位置的坐标信息, 或者釆用无线定位技术获得所述用户 终端所在位置的坐标信息。
所述接收单元 702还用于, 在所述获得单元 701获得用户终端所在 位置的坐标信息和所述用户终端所在小区的小区 I D之前,接收所述 A N D S F 实体发送的增强映射关系表。
本发明实施例提供的装置, ANDSF 实体接收到用户终端发送的接入 请求消息, 根据所述接入请求消息中携带的所述用户终端所在小区的小 区 ID查找增强映射表获得所述用户终端所在小区覆盖范围内所有接入网 节点的节点信息; 比较所述接入请求消息中携带的所述用户终端所在位 置的坐标信息和所述用户终端所在小区覆盖范围内的接入网节点的节点 信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网节点, 进行接 入。 与现有技术中的获得用户终端所在小区覆盖范围内的所有接入网节 点, 搜索所有接入网节点相比, 本发明实施例提供的接入网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功耗。
实施例 6 : 本发明实施例提供了一种 ANDSF实体, 在硬件实现上, 图 5 中所述 的发送单元可以为发射器或收发机, 以上接收单元可以为接收器或收发 机, 且该发送单元和接收单元可以集成在一起构成收发单元, 对应于硬 件实现为收发机。 以上查找单元和比较单元可以以硬件形式或软件形式 内嵌于基站的处理器中。 该处理器可以为中央处理单元 ( CPU) , 也可以 单片机。
如图 8所示, 所述 ANDSF实体包括: 发射器 801、 接收器 802、 存储 器 803 以及分别与发射器 801、 接收器 802和存储器 803连接的处理器 804。 当然, 所述 ANDSF实体还可以包括基带处理部件、 中射频处理部件、 输入输出装置等通用部件, 本发明实施例在此不做任何限制。 其中, 存 储器 803 中存储一组程序代码, 且处理器 804用于调用存储器 803 中存 储的程序代码, 用于执行以下操作:
处理器 804用于, 通过接收器 802接收用户终端发送的接入请求消 息, 所述接入请求消息中包括所述用户终端所在位置的坐标信息和所述 用户终端所在小区的小区 ID。 所述处理器 804, 用于查找增强映射关系 表获得所述用户终端所在小区的小区 ID对应的接入网节点的节点信息, 其中, 所述增强映射关系表中存储有小区的小区 ID与所述小区内的接入 网节点的节点信息的对应关系, 所述接入网节点的节点信息包括: 接入 网的接入信息和坐标信息。 所述处理器 804, 用于比较所述用户终端所在 位置的坐标信息, 与所述用户终端所在小区的小区 ID对应的接入网节点 的节点信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节 点信息。 所述处理器 804, 用于通过发射器 801向所述用户终端发送接入 响应消息, 所述接入响应消息中携带有所述离所述用户终端最近的接入 网节点的节点信息, 以使得所述用户终端搜索离所述用户终端最近的接 入网节点, 进行接入。
其中, 所述接入请求消息为介质访问控制 MAC消息、 无线资源控制 RRC消息或 Access Network Info Request。 本发明实施例还提供了一种用户终端, 在硬件实现上, 图 6 中所述 的发送单元可以为发射器或收发机, 接收单元可以为接收器或收发机, 且该发送单元和接收单元可以集成在一起构成收发单元, 对应于硬件实 现为收发机。 以上接入单元可以以硬件形式或软件形式内嵌于基站的处 理器中。 该处理器可以为中央处理单元 (CPU) , 也可以单片机。
如图 9所示, 所述用户终端包括: 发射器 901、 接收器 902、 存储器 903以及分别与发射器 901、接收器 902和存储器 903连接的处理器 904。 当然, 所述用户终端还可以包括基带处理部件、 中射频处理部件、 输入 输出装置等通用部件, 本发明实施例在此不做任何限制。 其中, 存储器 9 03中存储一组程序代码,且处理器 904用于调用存储器 9 03中存储的程 序代码, 用于执行以下操作:
处理器 904 , 用于通过发射器 9 01 向接入网发现和选择功能 ANDSF 实体发送接入请求消息, 所述接入请求消息包括用户终端所在位置的坐 标信息和所述用户终端所在小区的小区 I D。 所述处理器 904 , 用于通过 接受器 902接收所述 ANDSF 实体发送的接入响应消息, 所述接入响应消 息中携带有离所述用户终端最近的接入网节点的节点信息。 所述处理器 9 04 , 用于根据所述离所述用户终端最近的接入网节点的节点信息中的接 入网的接入信息, 搜索并接入所述离所述用户终端最近的接入网节点。
其中, 所述接入请求消息为介质访问控制 MAC消息、 无线资源控制 RRC消息或 Ac ce s s Ne twor k I nf o Reque s t。
所属处理器 904还用于, 在通过所述发射器 901向 ANDSF实体发送 所述接入请求消息之前, 获得所述用户终端所在位置的坐标信息。
所述获得单元 604具体用于, 通过内部的全球定位系统 GPS来获得 所述用户终端所在位置的坐标信息, 或者釆用无线定位技术获得所述用 户终端所在位置的坐标信息。
本发明实施例提供的装置, ANDSF 实体接收到用户终端发送的接入 请求消息, 根据所述接入请求消息中携带的所述用户终端所在小区的小 区 I D查找增强映射表获得所述用户终端所在小区覆盖范围内所有接入网 节点的节点信息; 比较所述接入请求消息中携带的所述用户终端所在位 置的坐标信息和所述用户终端所在小区覆盖范围内的接入网节点的节点 信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网节点, 进行接 入。 与现有技术中的获得用户终端所在小区覆盖范围内的所有接入网节 点, 搜索所有接入网节点相比, 本发明实施例提供的接入网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功耗。
实施例 7 :
本发明实施例提供了一种用户终端, 在硬件实现上, 图 7所述的发 送单元可以为发射器或收发机, 以上接收单元可以为接收器或收发机, 且该发送单元和接收单元可以集成在一起构成收发单元, 对应于硬件实 现为收发机。 以上获得单元、 查找单元、 比较单元和接入单元可以以硬 件形式或软件形式内嵌于基站的处理器中。 该处理器可以为中央处理单 元 (CPU ) , 也可以单片机。
如图 1 0所示, 所述用户终端包括: 接收器 1001、 存储器 1 002 , 以 及分别与接收器 1 001和存储器 1002连接的处理器 1003。 当然, 所述用 户终端还可以包括基带处理部件、 中射频处理部件、 输入输出装置等通 用部件, 本发明实施例在此不做任何限制。 其中, 存储器 1002中存储一 组程序代码, 且处理器 1003用于调用存储器 1002 中存储的程序代码, 用于执行以下操作:
处理器 1 003 , 用于获得用户终端所在位置的坐标信息和所述用户终 端所在小区的小区 ID。 所述处理器 1003 , 用于通过接收器 1 001接收接 入网发现和选择功能 ANDSF 实体发送的增强映射关系表, 所述增强映射 关系表中存储有小区的小区 I D与所述小区内的接入网节点的节点信息的 对应关系, 所述接入网节点的节点信息包括: 接入网的接入信息和坐标 信息。 所述处理器 1003 , 用于查找所述增强映射关系表获得所述用户终 端所在小区的小区 ID对应的接入网节点的节点信息。 所述处理器 1003 , 用于比较获得的所述用户终端所在位置的坐标信息, 与获得的所述用户 终端所在小区的小区 ID对应的接入网节点的节点信息中的坐标信息, 获 得离所述用户终端最近的接入网节点的节点信息。 所述处理器 1 003 , 用 于根据获得的所述离所述用户终端最近的接入网节点的节点信息中的接 入网的接入信息, 搜索并接入所述离所述用户终端最近的接入网节点。
所述处理器 1003还用于,通过内部的全球定位系统 GPS来获得所述 用户终端所在位置的坐标信息, 或者釆用无线定位技术获得所述用户终 端所在位置的坐标信息。
所述处理器 1003还用于,在获得用户终端所在位置的坐标信息和所 述用户终端所在小区的小区 ID之前, 通过接收器 1 001接收所述 ANDSF 实体发送的增强映射关系表。
本发明实施例提供的装置, ANDSF 实体接收到用户终端发送的接入 请求消息, 根据所述接入请求消息中携带的所述用户终端所在小区的小 区 ID查找增强映射表获得所述用户终端所在小区覆盖范围内所有接入网 节点的节点信息; 比较所述接入请求消息中携带的所述用户终端所在位 置的坐标信息和所述用户终端所在小区覆盖范围内的接入网节点的节点 信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节点信息; 将所述离所述用户终端最近的接入网节点的节点信息发送给用户终端, 使得用户终端可以搜索所述离所述用户终端最近的接入网节点, 进行接 入。 与现有技术中的获得用户终端所在小区覆盖范围内的所有接入网节 点, 搜索所有接入网节点相比, 本发明实施例提供的接入网选择方法, 减少用户终端对接入网节点的搜索量, 降低用户终端的功耗。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分 步骤可以通过程序指令相关的硬件来完成, 前述的程序可以存储于计算 机可读取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步 骤; 而前述的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以 存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不 局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本 发明的保护范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种接入网选择方法, 其特征在于, 包括:
接收用户终端发送的接入请求消息, 所述接入请求消息中包括所述 用户终端所在位置的坐标信息和所述用户终端所在小区的小区 ID;
查找增强映射关系表获得所述用户终端所在小区的小区 I D对应的接 入网节点的节点信息, 其中, 所述增强映射关系表中存储有小区的小区 ID 与所述小区内的接入网节点的节点信息的对应关系, 所述接入网节点 的节点信息包括: 接入网的接入信息和坐标信息;
比较所述用户终端所在位置的坐标信息, 与所述用户终端所在小区 的小区 ID对应的接入网节点的节点信息中的坐标信息, 获得离所述用户 终端最近的接入网节点的节点信息;
向所述用户终端发送接入响应消息, 所述接入响应消息中携带有离 所述用户终端最近的接入网节点的节点信息, 以使得所述用户终端搜索 离所述用户终端最近的接入网节点, 进行接入。
2、 根据权利要求 1所述的方法, 其特征在于, 所述接入请求消息为 介质访问控制 MAC消息、 无线资源控制 RRC消息或 Acces s Ne twork Info Reques t。
3、 一种接入网选择方法, 其特征在于, 包括:
向接入网发现和选择功能 ANDSF 实体发送接入请求消息, 所述接入 请求消息包括用户终端所在位置的坐标信息和所述用户终端所在小区的 小区 ID;
接收所述 ANDSF 实体发送的接入响应消息, 所述接入响应消息中携 带有离所述用户终端最近的接入网节点的节点信息;
根据所述离所述用户终端最近的接入网节点的节点信息中的接入网 的接入信息,搜索并接入所述离所述用户终端最近的接入网节点。
4、 根据权利要求 3所述的方法, 其特征在于, 所述接入请求消息为 介质访问控制 MAC消息、 无线资源控制 RRC消息或 Acces s Ne twork Info Reques t消息。
5、 根据权利要求 3或 4所述的方法, 其特征在于, 在向 ANDSF实体 发送所述接入请求消息之前, 所述方法, 还包括:
获得所述用户终端所在位置的坐标信息。
6、 根据权利要求 5所述的方法, 其特征在于, 所述获得所述用户终 端所在位置的坐标信息, 具体包括:
通过内部的全球定位系统 GPS 来获得所述用户终端所在位置的坐标 信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐标信息。
7、 一种接入网选择方法, 其特征在于, 包括:
获得用户终端所在位置的坐标信息和所述用户终端所在小区的小区
ID;
接收接入网发现和选择功能 ANDSF 实体发送的增强映射关系表, 所 述增强映射关系表中存储有小区的小区 I D与所述小区内的接入网节点的 节点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入 信息和坐标信息;
查找所述增强映射关系表获得所述用户终端所在小区的小区 I D对应 的接入网节点的节点信息;
比较所述用户终端所在位置的坐标信息, 与所述用户终端所在小区 的小区 ID对应的接入网节点的节点信息中的坐标信息, 获得离所述用户 终端最近的接入网节点的节点信息;
根据所述离所述用户终端最近的接入网节点的节点信息中的接入网 的接入信息搜索并接入所述离所述用户终端最近的接入网节点。
8、 根据权利要求 7所述的方法, 其特征在于, 所述获得用户终端所 在位置的坐标信息, 具体包括:
通过内部的全球定位系统 GPS 来获得所述用户终端所在位置的坐标 信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐标信息。
9、 根据权利要求 7所述的方法, 在所述获得用户终端所在位置的坐 标信息和所述用户终端所在小区的小区 ID之前, 所述方法还包括:
接收所述 ANDSF实体发送的增强映射关系表。
10、 一种接入网发现和选择功能 ANDSF实体, 包括:
接收单元, 用于接收用户终端发送的接入请求消息, 所述接入请求 消息中包括所述用户终端所在位置的坐标信息和所述用户终端所在小区 的小区 ID;
查找单元, 用于查找增强映射关系表获得所述接收单元接收的所述 用户终端所在小区的小区 ID对应的接入网节点的节点信息, 其中, 所述 增强映射关系表中存储有小区的小区 ID与所述小区内的接入网节点的节 点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入信 息和坐标信息;
比较单元, 用于比较所述用户终端所在位置的坐标信息, 与所述查 找单元获得的所述用户终端所在小区的小区 ID对应的接入网节点的节点 信息中的坐标信息, 获得离所述用户终端最近的接入网节点的节点信息; 发送单元, 用于向所述用户终端发送接入响应消息, 所述接入响应 消息中携带有所述比较单元获得的离所述用户终端最近的接入网节点的 节点信息, 以使得所述用户终端搜索离所述用户终端最近的接入网节点, 进行接入。
11、 根据权利要求 10所述的 ANDSF实体, 其特征在于, 所述接入请 求消息为介质访问控制 MAC 消息、 无线资源控制 RRC 消息或 Access Network Info Request。
12、 一种用户终端, 其特征在于, 包括:
发送单元, 用于向接入网发现和选择功能 ANDSF 实体发送接入请求 消息, 所述接入请求消息包括用户终端所在位置的坐标信息和所述用户 终端所在小区的小区 ID;
接收单元, 用于接收所述 ANDSF 实体发送的接入响应消息, 所述接 入响应消息中携带有离所述用户终端最近的接入网节点的节点信息;
接入单元, 用于根据所述接收单元接收的所述离所述用户终端最近 的接入网节点的节点信息中的接入网的接入信息, 搜索并接入所述离所 述用户终端最近的接入网节点。
13、 根据权利要求 12所述的 ANDSF实体, 其特征在于, 所述接入请 求消息为介质访问控制 MAC 消息、 无线资源控制 RRC 消息或 Access Network Info Request。
14、 根据权利要求 12或 13任意一项所述的用户终端, 其特征在于, 还包括获得单元,
所述获得单元, 用于在所述发送单元向 ANDSF 实体发送所述接入请 求消息之前, 获得所述用户终端所在位置的坐标信息。
15、 根据权利要求 14所述的 ANDSF实体, 其特征在于, 所述获得单 元具体用于, 通过内部的全球定位系统 GPS 来获得所述用户终端所在位 置的坐标信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐 标信息。
16、 一种用户终端, 其特征在于, 包括: 获得单元, 用于获得用户终端所在位置的坐标信息和所述用户终端 所在小区的小区 ID;
接收单元, 用于接收接入网发现和选择功能 ANDSF 实体发送的增强 映射关系表, 所述增强映射关系表中存储有小区的小区 ID与所述小区内 的接入网节点的节点信息的对应关系, 所述接入网节点的节点信息包括: 接入网的接入信息和坐标信息;
查找单元, 用于查找所述接收单元接收的所述增强映射关系表获得 所述接收单元接收的所述用户终端所在小区的小区 ID对应的接入网节点 的节点信息;
比较单元, 用于比较所述获得单元获得的所述用户终端所在位置的 坐标信息, 与所述查找单元获得的所述用户终端所在小区的小区 ID对应 的接入网节点的节点信息中的坐标信息, 获得离所述用户终端最近的接 入网节点的节点信息;
接入单元, 用于根据所述比较单元获得的所述离所述用户终端最近 的接入网节点的节点信息中的接入网的接入信息, 搜索并接入所述离所 述用户终端最近的接入网节点。
17、 根据权利要求 16所述的用户终端, 其特征在于, 所述获得单元 还用于, 通过内部的全球定位系统 GPS 来获得所述用户终端所在位置的 坐标信息, 或者釆用无线定位技术获得所述用户终端所在位置的坐标信 息。
18、 根据权利要求 16所述的用户终端, 所述接收单元还用于, 在所 述获得单元获得用户终端所在位置的坐标信息和所述用户终端所在小区 的小区 ID之前, 接收所述 ANDSF实体发送的增强映射关系表。
PCT/CN2013/087407 2013-11-19 2013-11-19 一种接入网选择方法及装置 WO2015074178A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/087407 WO2015074178A1 (zh) 2013-11-19 2013-11-19 一种接入网选择方法及装置
CN201380002897.5A CN104904274A (zh) 2013-11-19 2013-11-19 一种接入网选择方法及装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/087407 WO2015074178A1 (zh) 2013-11-19 2013-11-19 一种接入网选择方法及装置

Publications (1)

Publication Number Publication Date
WO2015074178A1 true WO2015074178A1 (zh) 2015-05-28

Family

ID=53178778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/087407 WO2015074178A1 (zh) 2013-11-19 2013-11-19 一种接入网选择方法及装置

Country Status (2)

Country Link
CN (1) CN104904274A (zh)
WO (1) WO2015074178A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110830101A (zh) * 2018-08-10 2020-02-21 展讯半导体(南京)有限公司 小区id的确定及获取方法、网络设备、终端、可读介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1710986A (zh) * 2005-07-08 2005-12-21 清华大学 基于蜂窝网络定位的无线局域网发现方法
CN101945456A (zh) * 2009-07-08 2011-01-12 中兴通讯股份有限公司 一种andsf提供接入网协议选择功能的方法和系统
CN102440045A (zh) * 2011-10-08 2012-05-02 华为技术有限公司 一种获取无线局域网络信息的方法及装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101107869A (zh) * 2005-01-18 2008-01-16 交互数字技术公司 用于系统发现和用户选择的方法和系统
US8570993B2 (en) * 2010-05-20 2013-10-29 At&T Mobility Ii Llc Wi-Fi intelligent selection engine
WO2011144122A2 (zh) * 2011-05-30 2011-11-24 华为技术有限公司 网络选择方法、设备和系统
US9888429B2 (en) * 2011-08-12 2018-02-06 Sk Telecom Co., Ltd. Multi-network based simultaneous data transmission method and apparatuses applied to the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1710986A (zh) * 2005-07-08 2005-12-21 清华大学 基于蜂窝网络定位的无线局域网发现方法
CN101945456A (zh) * 2009-07-08 2011-01-12 中兴通讯股份有限公司 一种andsf提供接入网协议选择功能的方法和系统
CN102440045A (zh) * 2011-10-08 2012-05-02 华为技术有限公司 一种获取无线局域网络信息的方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110830101A (zh) * 2018-08-10 2020-02-21 展讯半导体(南京)有限公司 小区id的确定及获取方法、网络设备、终端、可读介质
CN110830101B (zh) * 2018-08-10 2021-07-27 展讯半导体(南京)有限公司 小区id的确定及获取方法、网络设备、终端、可读介质

Also Published As

Publication number Publication date
CN104904274A (zh) 2015-09-09

Similar Documents

Publication Publication Date Title
JP5801445B2 (ja) ロケーションアウェアマルチモーダル通信システム
US10045323B2 (en) Positioning method, network side device, positioning node, and positioning system
WO2018228192A1 (zh) 插入smf的方法及amf实体
WO2016202174A1 (zh) 一种网络接入方法、移动通信终端、网络服务器及网络接入系统
US8874710B2 (en) Access network discovery
CN107466090B (zh) 利用指针信号在可用信道中进行通信的接入点、无线终端、存储介质和方法
EP3576464B1 (en) Method, terminal, and network device for establishing local network connection
US20120113971A1 (en) Efficient wlan discovery and association
US20100232401A1 (en) Wireless local area network scan based on location
KR101867745B1 (ko) 와이파이 위치 결정을 위한 방법 및 장치
JP6250558B2 (ja) Cdma1xネットワークにおいて位置近似を容易にするための方法および装置
WO2016141752A1 (zh) 小区选择的方法、anr配置方法、设备及计算机存储介质
WO2013127349A1 (zh) 一种收集位置信息的方法、系统和装置
EP3206437A1 (en) Hidden hotspot access method and device
WO2013044853A1 (zh) 采用观察的到达时间差对移动台进行定位的方法及设备
WO2014166253A1 (zh) 一种通过wifi热点定位的方法和系统
WO2013185716A1 (zh) 非实时位置信息获取方法及装置
WO2015074178A1 (zh) 一种接入网选择方法及装置
WO2014127702A1 (zh) 网络选择方法及用户设备
WO2018059153A1 (zh) 一种系统信息获取方法、用户终端和网络侧设备
WO2023185423A1 (zh) 一种执行网络管理服务意图的方法、装置和系统
WO2018000321A1 (zh) 接入点切换方法、装置及设备
WO2023241264A1 (zh) 一种小区测量方法及相关装置
WO2023185424A1 (zh) 无线通信的方法和装置
WO2023051673A1 (zh) 感知数据传输方法、设备、装置及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13898037

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13898037

Country of ref document: EP

Kind code of ref document: A1