WO2017054449A1 - 一种mocn网中注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质 - Google Patents

一种mocn网中注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质 Download PDF

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Publication number
WO2017054449A1
WO2017054449A1 PCT/CN2016/081014 CN2016081014W WO2017054449A1 WO 2017054449 A1 WO2017054449 A1 WO 2017054449A1 CN 2016081014 W CN2016081014 W CN 2016081014W WO 2017054449 A1 WO2017054449 A1 WO 2017054449A1
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Prior art keywords
sequence number
mobile station
registration
response message
base station
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PCT/CN2016/081014
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English (en)
French (fr)
Inventor
陈光伟
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中兴通讯股份有限公司
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Publication of WO2017054449A1 publication Critical patent/WO2017054449A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a MOCN network (Multi-Operator Core Network) registration initiation and processing method, a base station controller, a mobile station, a system, and a computer readable storage medium.
  • MOCN network Multi-Operator Core Network
  • MOCN is a mode of carrier shared network introduced by 3GPP Release 6.
  • the Radio Access Network (RAN) is shared by multiple operators, and the core network (CN) of each operator is independent.
  • RAN Radio Access Network
  • CN core network
  • the RAN selects an operator for a mobile station (Mobile Station, MS) in the MOCN network by the following method:
  • the Base Station Controller can directly use the NRI (or NULL NRI). Find the MSC (Mobile Switching Center) or SGSN (Serving GPRS Support Node) of the corresponding carrier.
  • the RAN selects an operator for the MS through the re-routing process defined in the protocol.
  • This scenario mainly corresponds to the initial access of the mobile phone to the network (for example, the mobile phone just turned on), which is the core problem that the MOCN needs to solve.
  • the above re-routing process needs to be jointly supported by the BSC, MSC or SGSN to complete.
  • MOCN is greatly limited.
  • how to implement MOCN in the case that the MSC or SGSN does not support the re-routing function becomes a topic of concern to operators.
  • the embodiment of the present invention mainly relates to how to solve the serial number synchronization problem of the Unconfirmed Information (UI) frame when the PS domain rerouting technology that is not supported by the SGSN in the PS domain is involved.
  • UI Unconfirmed Information
  • the UI frame is one of four frame formats of a Logical Link Control (LLC) frame.
  • the sequence number field carried in the UI frame is N(U), which is equal to the transmission state variable V(U) recorded by the LLC frame sender (MS or SGSN), and the range of V(U) is 0 to 511; each UI is sent. After the frame, V(U) is incremented by 1.
  • the MS and SGSN also include a UI frame reception state variable V(UR) for indicating N(U) in the next UI frame desired to be received, in the range of 0-511. After each UI frame is received, V(UR) is updated to N(U) plus 1 of the UI frame.
  • the mobile station or the SGSN When the mobile station or the SGSN receives the UI frame, it determines whether N(U) is legal according to the relevant protocol. If it satisfies (V(UR)-32) ⁇ N(U) ⁇ V(UR), it considers N ( U) Illegal, discarding the UI frame, which is called N(U) out of sync.
  • the BSC sends an Attach Request or a Routing Area Update Request sent by the MS to the first SGSN, and the first SGSN and the MS may There is a signaling interaction (usually identifier request and authentication, encryption, etc.), causing the V (UR) of the MS to no longer be zero. If the first SGSN rejects the registration request of the MS, the BSC sends the request to the second SGSN; when the SGSN sends an Attach Accept or Routing Area Update Accept message to the MS, The carried N(U) may be smaller than the V (UR) recorded by the MS, that is, N(U) out of synchronization occurs, resulting in the MS being unable to access the network.
  • the main technical problem to be solved by the embodiments of the present invention is to provide a MOCN network (Multi-Operator Core Network) registration initiation and processing method, a base station controller, a mobile station, a system, and a computer readable storage medium.
  • MOCN network Multi-Operator Core Network
  • the mobile station cannot access the network due to the missing sequence N(U) of the sequence number field.
  • a registration processing method in a multi-operator core network comprising:
  • the base station controller resets the receiving sequence number of the mobile station to be less than or equal to the sending sequence number in the accept registration response message
  • the base station controller sends the accept registration response message to the mobile station.
  • the method further includes:
  • the base station controller when receiving the security authentication message fed back by the service support node device, resetting the receiving sequence number of the mobile station to be less than or equal to the sending sequence number in the security authentication message;
  • the method further includes:
  • the base station controller resets the receiving sequence number of the mobile station to be less than or equal to the sending sequence number in the accepting registration response message, acquiring a sending sequence number in the accepting registration response message, determining the sending sequence number and Whether the current receiving serial number of the mobile station is synchronized.
  • the determining, by the base station controller, whether the sending sequence number is synchronized with the current receiving sequence number of the mobile station includes:
  • the sending sequence number Determining whether the sending sequence number is greater than or equal to the value of the old sending sequence number minus thirty-one, and less than the value of the old sending sequence number plus one, if the sending sequence number is greater than or equal to the old sending sequence number minus thirty-one The value is less than the value of the old transmission sequence plus one, and it is determined that the transmission sequence number is not synchronized with the current reception sequence number of the mobile station.
  • the base station controller sends the registration request to the service support node device, and the receiving the registration response message fed back by the service support node includes:
  • the method further includes: after the base station controller selects all the service support node devices in the rerouting list, and all the service support node devices sequentially send the registration request, when all received When the registration response message is rejected, the last received rejection registration response message is sent to the mobile station.
  • the base station controller resetting the receiving sequence number of the mobile station to be less than or equal to the sending sequence number in the accepting registration response message includes:
  • the base station controller sends an exchange identification message to the mobile station to reset the reception sequence number of the mobile station to zero.
  • the registration information is an attach request message or a routing area update request message.
  • a base station controller includes a first receiving module, a routing module, a processing module, and a first sending module;
  • the first receiving module is configured to receive a registration request sent by the mobile station
  • the routing module is configured to send the registration request to the service support node device, and receive an acceptance registration response message fed back by the service support node device;
  • the processing module is configured to reset the receiving sequence number of the mobile station to be less than or equal to a sending sequence number in the accept registration response message;
  • the first sending module is configured to send the accept registration response message to the mobile station.
  • the base station controller further includes a security message processing module, configured to receive the security of the service support node device feedback before the routing module receives the accept registration response message.
  • a security message processing module configured to receive the security of the service support node device feedback before the routing module receives the accept registration response message.
  • the base station controller further includes a determining module, configured to obtain the registration before the processing module resets the receiving sequence number of the mobile station to be less than or equal to a sending sequence number in the accept registration response message. In response to the sending sequence number in the message, it is determined whether the sending sequence number is synchronized with the current receiving sequence number of the mobile station.
  • the determining module includes an extracting submodule and a determining submodule
  • the extraction submodule is configured to acquire a sequence number in a message sent by the base station controller to the mobile station as an old transmission sequence number;
  • the determining sub-module is configured to determine whether the sending sequence number is greater than or equal to the value of the old sending sequence number minus thirty-one, and is smaller than the value of the old sending sequence number plus one, if the sending sequence number is greater than or equal to If the value of the old transmission sequence number minus thirty-one is less than the value of the old transmission sequence number plus one, it is determined that the transmission sequence number is not synchronized with the current reception sequence number of the mobile station.
  • the routing module includes a selection submodule, a sending submodule, and a determining submodule;
  • the selection submodule is configured to select a service support node device from the rerouting list
  • the sending submodule is configured to send the registration request to a currently selected service supporting node device
  • the determining submodule is configured to receive a registration response message fed back by the service support node device, and if the registration response message is a reject registration response message, notify the selecting submodule from the rerouting list to other service support node devices Selecting one and resending the registration request by the sending sub-module until the received registration response message is an accept registration response message, or until all service support node devices in the re-routing list are selected.
  • the first sending module is further configured to: after the determining submodule selects all the service supporting node devices in the rerouting list, and all the service supporting node devices sequentially send the registration request When the received response message is rejected, the last time will be received. The received rejection registration response message is sent to the mobile station.
  • the processing module resetting the receiving sequence number of the mobile station to be less than or equal to the sending sequence number in the accepting registration response message includes:
  • the processing module sends an exchange identification message to the mobile station to reset the receiving sequence number of the mobile station to zero.
  • the registration information is an attach request message or a routing area update request message.
  • a mobile station comprising:
  • a second sending module configured to send a registration request to the base station controller
  • a second receiving module configured to receive a reset message sent by the base station controller
  • a synchronization module configured to update the received sequence number to be synchronized with the transmission sequence number
  • the registration processing module is configured to receive the registration registration response message corresponding to the registration request feedback of the base station controller; or receive the security authentication message sent by the base station controller to complete the security authentication and feed back the corresponding response message to the base station controller.
  • a registration system comprising the base station controller and the mobile station.
  • a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the registration processing method in the multi-operator core network.
  • An embodiment of the present invention provides a registration initiation and processing method, a base station controller, and a computer readable storage medium in an MOCN network, where the method includes: after receiving a registration request sent by a mobile station, the base station controller requests the registration request Sending to the service support node device; after receiving the registration acceptance response message fed back by the service support node device, before returning it to the mobile station, the base station controller first resets the receiving serial number of the mobile station to be less than or equal to accepting the registration response message. After transmitting the sequence number, the base station controller sends a registration response message to the mobile station. In this way, the receiving sequence number of the mobile station and the sending sequence number in the registration response message can be kept synchronized, so that the problem that the mobile station cannot access the network due to the missing sequence number can be avoided.
  • FIG. 1 is a schematic flowchart of a registration process according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic flowchart of a security authentication process according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural diagram of a communication system according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram 1 of a base station controller according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a routing module in FIG. 4 according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram 2 of another base station controller according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic structural diagram 3 of another base station controller according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic structural diagram of a judging module in FIG. 7 according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic structural diagram of a mobile station according to Embodiment 2 of the present invention.
  • FIG. 10 is a schematic flowchart of a rerouting process according to Embodiment 3 of the present invention.
  • FIG. 11 is a schematic flowchart of a sequence number synchronization process according to Embodiment 3 of the present invention.
  • the base station controller After receiving the registration request sent by the mobile station, the base station controller in the embodiment of the present invention sends the registration request to the service support node device; after receiving the registration registration response message fed back by the service support node device, returning it to the service support node device Before the mobile station is given, the base station controller first resets the receiving sequence number of the mobile station, and then sends a registration response message to the mobile station. In this way, the receiving sequence number of the mobile station and the sending sequence number in the registration response message can be kept synchronized, so as to avoid the problem that the mobile station cannot access the network due to the missing sequence number.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the process of registration in the multi-operator core network includes steps S101-S107:
  • S101 The mobile station (MS) sends a registration request to a base station controller (BSC);
  • BSC base station controller
  • the registration request in this step may be an attach request message or a routing area update request message; of course, It should be understood that the present embodiment is not limited to the above two types of request messages, and may be other requests that are applicable to the solution of the embodiment.
  • S102 the base station controller receives a registration request sent by the mobile station.
  • the base station controller sends the registration request to the service support node device (SGSN), and receives an acceptance registration response message fed back by the service support node device.
  • SGSN service support node device
  • the accept registration response message corresponds to an attach accept response message and a routing area update accept response message
  • the base station controller resets the receiving sequence number V(UR) of the mobile station, and specifically resets to be less than or equal to the sending sequence number in the registration response message;
  • the mobile station updates its own receiving sequence number to a value less than or equal to the sending sequence number in the registration response message, for example, 0;
  • S107 The mobile station receives the accept registration response message fed back by the base station controller for subsequent processing.
  • the receiving sequence number on the mobile station is synchronized with the sending sequence number in the registration response message, there is no problem that the mobile station discards the accept registration response message due to the sequence number out of synchronization, thereby preventing the mobile station from being unable to access the network.
  • the service support node is not required to support rerouting. That is, the solution shown in FIG. 1 of the present embodiment is particularly suitable for use in an MOCN network in which the service support node device does not support rerouting.
  • the base station controller may generate a rerouting list, where the rerouting list includes service support nodes valid for each operator in the MOCN network; if the current status of the SGSN under the jurisdiction of an operator If it is not available, it will not be included in the rerouting list.
  • the base station controller sends the registration request to the service support node device, which may be sent to the service support node device in the rerouting list, and the current service support node device feedback is rejected, from the slave Re-select a service support node device in the routing list to resend until receiving the response or selecting all the service support node devices in the rerouting list.
  • the process is as follows:
  • the base station controller selects a service support node device from the rerouting list;
  • the rule used in the selection may be a random selection, or may be selected according to other rules, for example, according to priorities, load conditions, and the like;
  • the base station controller sends the registration request to the currently selected service support node device.
  • the base station controller may also store the registration request message for subsequent use. , can be cached locally when stored;
  • the base station controller receives the registration response message fed back by the currently selected service support node device. If the registration response message is a refusal registration response message, the base station controller first intercepts the refusal registration response message and does not send it to the mobile station; The other service support list device selects one retransmission registration request, and if the received feedback is still the rejection registration response message, the above process is repeated until the received registration response message is an acceptance registration response message, or until the re-routing is selected.
  • All the services in the list support the node device; if all the service support node devices are still selected from the rerouting list and still receive the reject registration response message, the last received rejection registration response message is sent to the mobile station; when the base station controller receives After accepting the registration response message, the above step 104 can be entered.
  • the base station controller when the first service selected by the base station controller supports the PS message fed back by the node device and needs to be sent to the mobile station, at this time, since the mobile station is still in the network access process, it will not receive The other network element sends the PS message to him, so the base station controller can determine that the message is the PS message received by the mobile station for the first time, and the receiving sequence number is 0, and the sending sequence number in the message is also 0, so it can be directly Send it to the mobile station.
  • the message may be a registration response message, or may be a security authentication message, such as an authentication request message or an encryption request message.
  • the base station controller before receiving the response message (including accepting the registration response message or rejecting the response message) fed back by the currently selected service support node, receives the security authentication message fed back by the service support node device (not all The service support node device will feedback the message according to the configuration of the current network, and the process of sending the security authentication message to the mobile station for security authentication, as shown in FIG. 2, including steps S201-S205:
  • the base station controller resets the mobile station receiving sequence number, and also resets to a value less than or equal to the sending sequence number in the security authentication message, for example, 0;
  • the mobile station updates its own receiving sequence number to a value less than or equal to the sending sequence number in the security authentication response message, for example, 0;
  • the base station controller sends a security authentication message to the mobile station.
  • S205 The mobile station receives the security authentication message and completes the response message corresponding to the authentication processing feedback.
  • the base station controller sends the sequence number (which may be the transmission sequence number in the registration response message, or may be the transmission sequence number in the security authentication message) to the mobile station, and further includes:
  • the base station controller determines whether the sending sequence number is synchronized with the current receiving sequence number of the mobile station, and the following rules may be used:
  • N(U) is greater than or equal to the value of the old transmission sequence number minus thirty-one, and is smaller than the value of the old transmission sequence number plus one, that is, (N(U) old -31) ⁇ N(U) ⁇ N(U Old +1; if the sending sequence number is greater than or equal to the value of the old sending sequence number minus thirty-one, and is smaller than the value of the old sending sequence number plus one, it is determined that the sending sequence number is not synchronized with the current receiving sequence number of the mobile station. , that is, lost.
  • Increasing the above-mentioned judgment mechanism can avoid the loss of the mobile station and prevent the mobile station from entering the network, and at the same time reduce the amount of message interaction as much as possible, and improve the utilization of resources.
  • the base station controller when the base station controller resets the receiving sequence number of the mobile station, it may directly send an Exchange Iditification (XID) message to the mobile station; the mobile station receives its exchange identifier message and receives its own receiving.
  • XID Exchange Iditification
  • the serial number is directly reset to zero.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment provides a communication system, as shown in FIG. 3, including a base station controller (BSC) 1 and a mobile station (MS) 2;
  • BSC base station controller
  • MS mobile station
  • the mobile station 2 is configured to send a registration request to the base station controller 1, and the reset message sent by the receiving base station controller 1 resets its own receiving sequence number to be synchronized with the transmission sequence number, that is, resets to less than or equal to the transmission sequence number, and then receives The base station controller 1 corresponds to the registration request response message of the registration request feedback;
  • the base station controller 1 is configured to receive the registration request sent by the mobile station 2, send the registration request to the service support node device (SGSN), receive the registration registration response message fed back by the service support node device, and receive the reception sequence number of the mobile station 2 After the reset, the registration response message is sent to the mobile station 2.
  • SGSN service support node device
  • SGSN service support node device
  • receive the registration registration response message fed back by the service support node device receive the reception sequence number of the mobile station 2 After the reset, the registration response message is sent to the mobile station 2.
  • the base station controller 1 includes a first receiving module 11, a routing module 12, a processing module 13, and a first sending module 14;
  • the first receiving module 11 is configured to receive a registration request sent by the mobile station; the registration request may be an attach request message or a routing area update request message; of course, it should be understood that the embodiment is not limited to the above two request messages. Other requests that are applicable to the solution of this embodiment are also possible;
  • the routing module 12 is configured to send the registration request to the service support node device, and receive the registration acceptance response message fed back by the service support node device;
  • the processing module 13 is configured to reset the receiving sequence number V (UR) of the mobile station 2, reset to be less than or equal to the sending sequence number in the registration response message; when the registration request is an attach request message or a routing area update request message Accepting the registration response message corresponding to the attach accept response message and the routing area update accept response message; since the receiving sequence number on the mobile station is synchronized with the sending sequence number in the accept registration response message, there is no mobile station discarding due to the sequence number out of synchronization The registration response message is accepted to avoid the problem that the mobile station cannot access the network;
  • the first sending module 14 is configured to send a registration response message to the mobile station.
  • the service support node is not required to support rerouting. That is, the base station controller 2 shown in FIG. 2 of the present embodiment is particularly suitable for use in an MOCN network in which the service support node device does not support rerouting.
  • the base station controller 2 may generate a rerouting list, where the rerouting list includes service support nodes valid for each operator in the MOCN network; if the current status of the SGSN under the jurisdiction of an operator If it is not available, it will not be included in the rerouting list.
  • the base station controller 2 sends the registration request to the service support node device, which may be sent to the service support node device in the rerouting list, and the current service support node device feedbacks as a rejection, from the slave route list.
  • the routing module 12 includes a selection sub-module 121, a transmission sub-module 122, and a determination sub-module 123.
  • the selection sub-module 121 is configured to select a service support node device from the re-routing list; the rule used in the selection may be a random selection, or may be selected according to other rules, for example, according to priorities, load conditions, and the like;
  • the sending sub-module 121 is configured to send the registration request to the currently selected service supporting node device; after the sending module 121 sends the registration request message to the currently selected service supporting node device, the sending request may be stored for later use. It can be cached locally when it is stored.
  • the determining sub-module 123 is configured to receive a registration response message fed back by the service support node device. If the registration response message is a reject registration response message, the notification selection sub-module 121 selects one of the other service support node devices from the re-routing list and transmits the sub-module. The registration request is re-transmitted until the received registration response message is an acceptance registration response message, or until all the service support node devices in the re-routing list are selected. If all the service support node devices are still selected from the rerouting list and still receive the reject registration response message, the first sending module 14 sends the last received reject registration response message to the mobile station.
  • the base station controller 1 in this embodiment further includes a security message processing module. 15. Set to receive the security authentication message fed back by the service support node device before receiving the registration response message, and reset the receiving sequence number of the mobile station 2 to be less than or equal to the sending serial number in the security authentication message. A value in , for example 0, then sends a secure authentication message to the mobile station.
  • the base station controller 1 in this embodiment further includes a determining module 16 configured to send a sequence number in the processing module (may be a sending sequence number in the registration response message, or may be a security authentication message). Before transmitting the sequence number to the mobile station 2, it is determined whether the transmission sequence number is synchronized with the current reception number of the mobile station 2.
  • the determination module 16 includes an extraction sub-module 161 and a determination sub-module 162;
  • the extraction sub-module 161 is configured to acquire the sequence number in the message sent by the last base station controller to the mobile station as the old transmission sequence number; that is, N(U)old(N(U)old initial value is 0);
  • the determining sub-module 162 is configured to determine whether the sending sequence number N(U) is greater than or equal to the value of the old sending sequence number minus thirty-one, and is smaller than the value of the old sending sequence number plus one, that is, (N(U) old - 31) ⁇ N(U) ⁇ N(U) old +1; if the transmission sequence number is greater than or equal to the value of the old transmission sequence minus thirty-one, and is smaller than the value of the old transmission sequence plus one, then determining The sending sequence number is not synchronized with the current receiving sequence number of the mobile station, that is, the step is lost. Increasing the judgment mechanism can avoid the loss of the mobile station and prevent the mobile station from entering the network, and reduce the amount of message interaction as much as possible, thereby improving the utilization of resources.
  • the mobile station 2 in this embodiment includes:
  • the second sending module 21 is configured to send a registration request to the base station controller
  • the second receiving module 22 is configured to receive a reset message sent by the base station controller, where
  • the synchronization module 23 is configured to update the receiving sequence number of the mobile station to be synchronized with the sending sequence number, reset the receiving sequence number, and reset to a value less than or equal to one of the sending sequence numbers, for example, 0;
  • the registration processing module 24 is configured to receive an accept registration response message corresponding to the base station controller corresponding to the registration request feedback; or receive the security authentication message sent by the base station controller 1 to complete the security authentication and feed back the corresponding response message to the base station controller 1.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the base station controller BSC selects an appropriate operator for the mobile station MS alone when the service support node device SGSN does not support the rerouting process, so that the PS service of the mobile station MS can be enabled. It works normally in the MOCN network.
  • An example is described in which the MS sends a routing area update request message as an example. This embodiment first elaborates the rerouting process independently performed by the BSC, and then illustrates the detection and resolution of the N(U) out-of-synchronization.
  • the BSC receives the routing area update request message sent by the MS, and generates an SGSN rerouting list according to the current MOCN network configuration; if the current status of the SGSN managed by an operator is unavailable, it is not included in the list;
  • the BSC selects an SGSN from the SGSN rerouting list according to a certain algorithm (for example, a random algorithm), and records it as SGSN-A, and sends a routing area update request message to the SGSN-A;
  • a certain algorithm for example, a random algorithm
  • the BSC caches the routing area update request message and identifies the SGSN-A (to indicate that it has been selected) or removes from the attempt list;
  • the BSC receives a routing area update reject message sent by the SGSN-A.
  • S1005 The BSC intercepts the routing area update reject message, and reads out the cached routing area update request message.
  • S1006 The BSC reselects an SGSN from the SGSN rerouting list, denotes SGSN-B, and then sends a routing area update request message to the SGSN-B, and the rerouting process starts;
  • the BSC receives a routing area update reject message sent by the SGSN-B.
  • S1009 The BSC intercepts the routing area update reject message and reads out the cached routing area update. Ask for news;
  • S1010 The BSC reselects an SGSN from the SGSN rerouting list, denotes SGSN-C, and then sends a routing area update request message to the SGSN-C; the rerouting process continues;
  • S1011 The BSC removes or identifies the SGSN-C from the attempt list
  • the BSC receives the routing area update accept message sent by the SGSN-C, and sends the routing area update accept message to the MS, and the rerouting process ends.
  • FIG. 11 is a schematic diagram of the N(U) synchronization process of the rerouting method in this embodiment.
  • the SGSN-B feedback routing area update accept message is taken as an example, including steps S1101-S1115:
  • S1101 The MS sends a routing area update request message with the sequence number N(U) being 0.
  • the BSC sends a routing area update request message to the SGSN-A.
  • S1103 The BSC caches the routing area update request message and removes the SGSN-A from the attempt list;
  • S1104 The BSC receives the authentication request message sent by the SGSN-A, where the sequence number N(U) carried is 0;
  • S1106 The BSC sends the authentication request to the MS.
  • S1107 The MS receives the authentication request message, updates its own receiving sequence number V(UR) to 1, and then sends an authentication response message to the SGSN-A.
  • S1108 The BSC receives a routing area update reject message sent by the SGSN-A.
  • S1109 The BSC intercepts the routing area update reject message, and removes the routing area update request message that the buffered sequence number N(U) is 0;
  • the BSC sends a routing area update request message to the SGSN-B.
  • the BSC receives the routing area update accept message sent by the SGSN-B, where the sequence number N(U) carried is 0;
  • S1115 The BSC sends a routing area update accept message with the sequence number N(U) being 0 to the MS, and the rerouting process ends.
  • a registration system comprising the base station controller and the mobile station.
  • a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the registration processing method in the multi-operator core network.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the base station controller after receiving the registration request sent by the mobile station, sends the registration request to the service support node device; after receiving the registration registration response message fed back by the service support node device, Before returning to the mobile station, the base station controller first resets the receiving number of the mobile station to be less than or equal to the sending sequence number in the registration response message, and then the base station controller sends a registration response message to the mobile station.
  • the base station controller After receiving the registration request sent by the mobile station, the base station controller sends the registration request to the service support node device; after receiving the registration registration response message fed back by the service support node device, Before returning to the mobile station, the base station controller first resets the receiving number of the mobile station to be less than or equal to the sending sequence number in the registration response message, and then the base station controller sends a registration response message to the mobile station.
  • the mobile station's receiving serial number and accepting the registration ring The sending sequence number in the message can be kept synchronized, so that the problem that the serial number is out of synchronization and the

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Abstract

本发明公开了一种MOCN网络中注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质，该方法包括：基站控制器在接收到接收移动台发送的注册请求后，将该注册请求发送给服务支持节点设备；当接收到服务支持节点设备反馈的接受注册响应消息后，将其返回给移动台之前，基站控制器先将移动台的接收序号重置为小于等于接受注册响应消息中的发送序号后，基站控制器再将接受注册响应消息发给移动台。

Description

一种MOCN网中注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质 技术领域
本发明涉及无线通信领域，尤其涉及一种MOCN网络(Multi-Operator Core Network，多运营商核心网络)注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质。
背景技术
MOCN是3GPP Release6引入的运营商共享网络的一种模式。在该模式下，无线接入网(Radio Access Network，RAN)为多家运营商共享，而各运营商的核心网(Core Network，CN)是独立的。随着虚拟运营商、合资运营商越来越普遍，MOCN应用的场合也越来越多。
相关技术中，RAN在MOCN网络中通过以下方法为移动台(Mobile Station，MS)选择运营商：
(1)若MS接入RAN时使用的标识当中含有NRI((Network Resource Identifier,网络资源标识)，或NULL NRI，则BSC(Base Station Controller,基站控制器)可根据NRI(或NULL NRI)直接找到对应运营商的MSC(Mobile Switching Center，移动交换中心)或SGSN(Serving GPRS Support Node，服务支持节点)。
(2)若MS接入网络时使用的标识既不包含NRI，也不包含NULL NRI，则RAN通过协议中定义的重路由过程为MS选择运营商。该场景主要对应于手机初次接入网络(例如手机刚开机)，是MOCN需要解决的核心问题。
上述重路由过程需要BSC、MSC或SGSN共同支持才能完成。但是，在现网当中，大部分核心网都不支持该过程，因此MOCN的应用受到极大限制。鉴于上述原因，如何在MSC或SGSN不支持重路由功能的情况下实现MOCN，就成为了运营商关心的话题。要做到这一点，需要分别考虑CS域(Circuit  Switched Domain，电路交换域)和PS(Packet Switched Domain，分组交换域)域的解决方案。本发明实施例主要针对涉及PS域中，SGSN不支持的PS域重路由技术时如何解决非确认信息(Unconfirmed Information，UI)帧的序号同步问题。
UI帧是逻辑链路控制(Logical Link Control，LLC)帧四种帧格式当中的一种。UI帧当中携带的序号字段是N(U)，它等于LLC帧发送端(MS或SGSN)记录的发送状态变量V(U)，V(U)的范围为0～511；每发送完一个UI帧后，V(U)加1。MS和SGSN还包含UI帧接收状态变量V(UR)，用于表示下一个期望接收的UI帧中的N(U)，其范围是0～511。每接收一个UI帧后，V(UR)会更新为UI帧的N(U)加1。移动台或者SGSN在收到UI帧时，根据相关协议采用以下方式判断N(U)是否合法，如果满足(V(UR)-32)≤N(U)＜V(UR)，则认为N(U)非法，丢弃该UI帧，这种情况称之为N(U)失步。
在SGSN不支持重路由的MOCN网络中，BSC将MS发送的附着请求(Attach Request)或路由区更新请求(Routing Area Update Request)发送给第一个SGSN，此时第一个SGSN和MS可能会有信令交互(通常是标识符请求及鉴权、加密等信令)，导致MS的V(UR)不再是0。若第一个SGSN拒绝了MS的注册请求，则BSC将该请求发送给第二个SGSN；当SGSN向MS发送附着接受(Attach Accept)或路由区更新接受(Routing Area Update Accept)消息时，其中携带的N(U)有可能比MS记录的V(UR)小，即发生N(U)失步，导致MS无法入网。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例要解决的主要技术问题是，提供一种MOCN网络(Multi-Operator Core Network，多运营商核心网络)注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质，解决相关SGSN不支持重路由的MOCN网络中，因序号字段失步N(U)导致移动台无法入网的问题。
一种多运营商核心网中的注册处理方法，包括：
基站控制器接收移动台发送的注册请求；
基站控制器将该注册请求发送给服务支持节点设备，接收服务支持节点设备反馈的接受注册响应消息；
基站控制器将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号；
基站控制器将所述接受注册响应消息发给所述移动台。
可选地，该方法还包括：
在基站控制器接收所述接受注册响应消息之前，接收到服务支持节点设备反馈的安全认证消息时，将所述移动台的接收序号重置为小于等于所述安全认证消息中的发送序号；
将所述安全认证消息发给所述移动台。
可选地，该方法还包括：
在所述基站控制器将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号之前，获取所述接受注册响应消息中的发送序号，判断所述发送序号与所述移动台当前的接收序号是否同步。
可选地，所述基站控制器判断所述发送序号与所述移动台当前的接收序号是否同步包括：
获取上一次发送给所述移动台的消息中的序号作为旧发送序号；
判断所述发送序号是否大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，如果所述发送序号大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，则判定所述发送序号与所述移动台当前的接收序号不同步。
可选地，所述基站控制器将注册请求发送给服务支持节点设备，接收服务支持节点反馈的接受注册响应消息包括：
从重路由列表中选择一个服务支持节点设备；
将所述注册请求发送给当前选择的服务支持节点设备；
接收所述服务支持节点设备反馈的注册响应消息，如果该注册响应消息为拒绝注册响应消息，则从所述重路由列表其他服务支持节点设备中选择一个重发所述注册请求，直到接收的注册响应消息为接受注册响应消息，或直到选择完所述重路由列表中的所有服务支持节点设备。
可选地，该方法还包括：基站控制器在选择完所述重路由列表中的所有服务支持节点设备，并且所有所述服务支持节点设备依次发送所述注册请求后，当接收到的都为拒绝注册响应消息时，将最后一次接收到的拒绝注册响应消息发送给所述移动台。
可选地，所述基站控制器将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号包括：
所述基站控制器向所述移动台发送交换标识消息将所述移动台的接收序号重置为零。
可选地，所述注册信息为附着请求消息或路由区更新请求消息。
一种基站控制器，包括第一接收模块、路由模块、处理模块以及第一发送模块；
所述第一接收模块，设置为接收移动台发送的注册请求；
所述路由模块，设置为将所述注册请求发送给服务支持节点设备，接收服务支持节点设备反馈的接受注册响应消息；
所述处理模块，设置为将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号；
所述第一发送模块，设置为将所述接受注册响应消息发给所述移动台。
可选地，该基站控制器还包括安全消息处理模块，设置为在所述路由模块接收到所述接受注册响应消息之前，接收到服务支持节点设备反馈的安全 认证消息时，将所述移动台的接收序号重置为小于或等于所述安全认证消息中的发送序号，将所述安全认证消息发给所述移动台。
可选地，该基站控制器还包括判断模块，设置为在所述处理模块将所述移动台的接收序号重置为小于等于所述接受注册响应消息中的发送序号之前，获取所述接受注册响应消息中的发送序号，判断所述发送序号与所述移动台当前的接收序号是否同步。
可选地，所述判断模块包括提取子模块和判断子模块；
所述提取子模块，设置为获取上一次基站控制器发送给所述移动台的消息中的序号作为旧发送序号；
所述判断子模块，设置为判断所述发送序号是否大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，如果所述发送序号大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，则判定所述发送序号与所述移动台当前的接收序号不同步。
可选地，所述路由模块包括选择子模块、发送子模块、判断子模块；
所述选择子模块，设置为从重路由列表中选择一个服务支持节点设备；
所述发送子模块，设置为将所述注册请求发送给当前选择的服务支持节点设备；
所述判断子模块，设置为接收所述服务支持节点设备反馈的注册响应消息，如果该注册响应消息为拒绝注册响应消息，则通知所述选择子模块从所述重路由列表其他服务支持节点设备中选择一个并通过所述发送子模块重发所述注册请求，直到接收的注册响应消息为接受注册响应消息，或直到选择完所述重路由列表中的所有服务支持节点设备。
可选地，所述第一发送模块还设置为：在所述判断子模块选择完所述重路由列表中的所有服务支持节点设备，并且所有所述服务支持节点设备依次发送所述注册请求后，当接收到的都为拒绝注册响应消息时，将最后一次接 收到的拒绝注册响应消息发送给所述移动台。
可选地，所述处理模块将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号包括：
所述处理模块向所述移动台发送交换标识消息将所述移动台的接收序号重置为零。
可选地，所述注册信息为附着请求消息或路由区更新请求消息。
一种移动台，所述移动台包括：
第二发送模块，设置为向基站控制器发送注册请求；
第二接收模块，设置为接收基站控制器发送的重置消息；
同步模块，设置为将接收到的序号更新为与发送序号同步；
注册处理模块，设置为接收基站控制器对应注册请求反馈的接受注册响应消息；或接收基站控制器发送的安全认证消息完成安全认证并反馈相应的响应消息发给基站控制器。
一种注册系统，该系统包括所述的基站控制器和所述的移动台。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现所述的多运营商核心网中的注册处理方法。
本发明实施例提供了一种MOCN网络中注册发起及处理方法、基站控制器和计算机可读存储介质，该方法包括：基站控制器在接收到接收移动台发送的注册请求后，将该注册请求发送给服务支持节点设备；当接收到服务支持节点设备反馈的接受注册响应消息后，将其返回给移动台之前，基站控制器先将移动台的接收序号重置为小于等于接受注册响应消息中的发送序号后，基站控制器再将接受注册响应消息发给移动台。这样移动台的接收序号和接受注册响应消息中的发送序号可以保持同步，因此能避免序号失步导致移动台无法入网的问题。
附图概述
图1为本发明实施例一提供的注册处理过程流程示意图；
图2为本发明实施例一提供的安全认证处理过程流程示意图；
图3为本发明实施例二提供的通信系统结构示意图；
图4为本发明实施例二提供的基站控制器结构示意图一；
图5为本发明实施例二提供的图4中路由模块的结构示意图；
图6为本发明实施例二提供的另一基站控制器结构示意图二；
图7为本发明实施例二提供的另一基站控制器结构示意图三；
图8为本发明实施例二提供的图7中判断模块的结构示意图；
图9为本发明实施例二提供的移动台的结构示意图；
图10为本发明实施例三提供的重路由过程流程示意图；
图11为本发明实施例三提供的序号同步过程流程示意图。
本发明的实施方式
下面结合附图对本发明的实施方式进行描述。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
本发明实施例中的基站控制器在接收到接收移动台发送的注册请求后，将该注册请求发送给服务支持节点设备；当接收到服务支持节点设备反馈的接受注册响应消息后，将其返回给移动台之前，基站控制器先将移动台的接收序号进行重置后，再将接受注册响应消息发给移动台。这样移动台的接收序号和接受注册响应消息中的发送序号可以保持同步，避免序号失步导致移动台无法入网的问题。下面通过实施方式结合附图对本发明进行详细说明。
实施例一：
请参见图1所示，本实施例中提供的多运营商核心网中的注册的处理过程包括步骤S101-S107：
S 101：移动台(MS)向基站控制器(BSC)发送注册请求；
该步骤中的注册请求可为附着请求消息或路由区更新请求消息；当然， 应当理解的是，本实施例并不限于上述两种请求消息，也可为其他适用于本实施例方案的其他请求；
S 102：基站控制器接收移动台发送的注册请求；
S 103：基站控制器将该注册请求发送给服务支持节点设备(SGSN)，接收服务支持节点设备反馈的接受注册响应消息；
当注册请求为附着请求消息或路由区更新请求消息时，接受注册响应消息对应的为附着接受响应消息和路由区更新接受响应消息；
S 104：基站控制器将移动台的接收序号V(UR)进行重置，具体重置为小于或等于接受注册响应消息中的发送序号；
S 105：移动台将自身的接收序号更新为小于或等于接受注册响应消息中的发送序号的一个值，例如0；
S 106：基站控制器将接受注册响应消息发给移动台；
S 107：移动台接收基站控制器反馈的接受注册响应消息进行后续的处理。该步骤中，由于移动台上的接收序号与接受注册响应消息中的发送序号同步，因此不会存在因序号失步导致移动台丢弃该接受注册响应消息，避免移动台无法入网的问题。采用本实施例的上述处理过程，并不需要服务支持节点支持重路由。也即本实施例图1所示的方案尤其适用于服务支持节点设备不支持重路由的MOCN网络中。对于服务支持节点设备不支持重路由时，基站控制器可以生成一个重路由列表中，该重路由列表中包含MOCN网络中各运营商有效的的服务支持节点；如果某运营商所辖SGSN当前状态为不可用，则不将其包含在该重路由列表中。此时，上述步骤S103中基站控制器将注册请求发送给服务支持节点设备可为发送给重路由列表中的服务支持节点设备，且当前所发的服务支持节点设备反馈为拒绝时，从该从路由列表中重新选择一个服务支持节点设备重发，直到收到接受响应或选完该重路由列表中的所有服务支持节点设备。该过程如下：
基站控制器从重路由列表中选择一个服务支持节点设备；选择时所采用的规则可以是随机选择，也可以按照其他的规则例如根据优先级、负荷情况等进行选择；
基站控制器将注册请求发送给当前选择的服务支持节点设备；本实施例中，基站控制器将注册请求消息发送给当前选择的服务支持节点设备后，还可将其进行存储，以留待后续使用，存储时可将其缓存在本地；
基站控制器接收当前选择的服务支持节点设备反馈的注册响应消息，如该注册响应消息为拒绝注册响应消息，基站控制器将该拒绝注册响应消息先截留，而不发给移动台；然后从重路由列表的其他服务支持节点设备中选择一个重发注册请求，如果收到的反馈仍为拒绝注册响应消息，则重复上述过程，直到接收的注册响应消息为接受注册响应消息，或直到选择完重路由列表中的所有服务支持节点设备；如果从重路由列表中选择完所有服务支持节点设备仍收到拒绝注册响应消息，则将最后一次接收到的拒绝注册响应消息发送给移动台；当基站控制器收到接受注册响应消息后，即可进入上述步骤104。另外，在本实施例中，当基站控制器选择的第一个服务支持节点设备反馈的PS消息且需要发给移动台时，此时由于移动台还在入网过程中，其并不会收到其他网元发给他的PS消息，因此基站控制器可以确定该消息为该移动台第一次接收到的PS消息，其接受序号为0，该消息中的发送序号也为0，因此可以直接将其发给移动台。此处该消息可能为接受注册响应消息，也可能为安全认证消息，例如鉴权请求消息或者是加密请求消息等等。
本实施例中，基站控制器接收当前选择的服务支持节点反馈的响应消息(包括接受注册响应消息或拒绝响应消息)之前，当接收到该服务支持节点设备反馈的安全认证消息时(并不是所有的服务支持节点设备都会反馈该消息，需根据当前网络的配置而定)，还包括将该安全认证消息发给移动台进行安全认证的过程，请参见图2所示，包括步骤S201-S205：
S201：基站控制器将移动台接收序号进行重置，也重置为小于或等于该安全认证消息中的发送序号中的一个值，例如0；
S202：将安全认证消息发给移动台；
S203：移动台将自身的接收序号更新为小于或等于安全认证应消息中的发送序号的一个值，例如0；
S204：基站控制器将安全认证消息发给移动台；
S205：移动台接收安全认证消息并完成按完认证处理反馈相应的响应消息。
在本实施例中，基站控制器将发送序号(可能是接受注册响应消息中的发送序号，也可能是安全认证消息中的发送序号)发送给所述移动台之前，还包括：
判断发送序号与移动台当前的接收序号是否同步，在判断结果为不同步时才将发送序号发送给移动台；当为同步时，则可以不发。本实施例中，基站控制器判断发送序号与移动台当前的接收序号是否同步可采用以下规则：
获取上一次发送给移动台的消息中的序号作为旧发送序号，也即N(U)old(N(U)old初始值为0)；
判断发送序号N(U)是否大于或等于旧发送序号减三十一的值，并小于旧发送序号加一的值，即(N(U)old-31)≤N(U)＜N(U)old+1；如果所述发送序号大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，则判定发送序号与移动台当前的接收序号不同步，也即失步。
增加上述判断机制，可以达到避免失步导致移动台不能入网的同时，尽可能降少消息交互量，提升资源的利用率。
另外，本实施例中，基站控制器对移动台的接收序号进行重置时，可直接通过向移动台发送交换标识消息(Exchange Iditification,XID)；移动台收到交换标识消息后将自身的接收序号直接重置为零。
实施例二：
本实施例提供了一种通信系统，请参见图3所示，包括基站控制器(BSC)1和移动台(MS)2；
移动台2，设置为向基站控制器1发送注册请求，接收基站控制器1发送的重置消息将自身的接收序号重置为与发送序号同步，也即重置为小于等于发送序号，然后接收基站控制器1对应注册请求反馈的接受注册响应消息；
基站控制器1，设置为接收移动台2发送的注册请求，将该注册请求发送给服务支持节点设备(SGSN)，接收服务支持节点设备反馈的接受注册响应消息，将移动台后2的接收序号进行重置后，将接受注册响应消息发给移动台2。
请参见图4所示，基站控制器1包括第一接收模块11、路由模块12、处理模块13以及第一发送模块14；
第一接收模块11，设置为接收移动台发送的注册请求；该注册请求可为附着请求消息或路由区更新请求消息；当然，应当理解的是，本实施例并不限于上述两种请求消息，也可为其他适用于本实施例方案的其他请求；
路由模块12，设置为将注册请求发送给服务支持节点设备，接收服务支持节点设备反馈的接受注册响应消息；
处理模块13，设置为将移动台2的接收序号V(UR)进行重置，重置为小于或等于接受注册响应消息中的发送序号；当注册请求为附着请求消息或路由区更新请求消息时，接受注册响应消息对应的为附着接受响应消息和路由区更新接受响应消息；由于移动台上的接收序号与接受注册响应消息中的发送序号同步，因此不会存在因序号失步导致移动台丢弃该接受注册响应消息，避免移动台无法入网的问题；
第一发送模块14，设置为将接受注册响应消息发给移动台。
采用本实施例中的基站控制器2，并不需要服务支持节点支持重路由。也即本实施例图2所示的基站控制器2尤其适用于服务支持节点设备不支持重路由的MOCN网络中。对于服务支持节点设备不支持重路由时，基站控制器2可以生成一个重路由列表中，该重路由列表中包含MOCN网络中各运营商有效的服务支持节点；若某运营商所辖SGSN当前状态为不可用，则不将其包含在该重路由列表中。此时，基站控制器2将注册请求发送给服务支持节点设备具体可为发送给重路由列表中的服务支持节点设备，且当前所发的服务支持节点设备反馈为拒绝时，从该从路由列表中重新选择一个服务支持节点设备重发，直到收到接受响应或选完该重路由列表中的所有服务支持节点设备。请参见图5所示，路由模块12包括选择子模块121、发送子模块122、判断子模块123；
选择子模块121，设置为从重路由列表中选择一个服务支持节点设备；选择时所采用的规则可以是随机选择，也可以按照其他的规则例如根据优先级、负荷情况等进行选择；
发送子模块121，设置为将注册请求发送给当前选择的服务支持节点设备；发送模块121将注册请求消息发送给当前选择的服务支持节点设备后，还可将其进行存储，以留待后续使用，存储时可将其缓存在本地；
判断子模块123，设置为接收服务支持节点设备反馈的注册响应消息，如该注册响应消息为拒绝注册响应消息，通知选择子模块121从重路由列表其他服务支持节点设备中选择一个并通过发送子模块重122发注册请求，直到接收的注册响应消息为接受注册响应消息，或直到选择完重路由列表中的所有服务支持节点设备。如果从重路由列表中选择完所有服务支持节点设备仍收到拒绝注册响应消息，第一发送模块14则将最后一次接收到的拒绝注册响应消息发送给移动台。
请参见图6所示，本实施例中的基站控制器1还包括安全消息处理模块 15，设置为在路由模块12接收到接受注册响应消息之前，接收到服务支持节点设备反馈的安全认证消息时，将移动台2的接收序号重置为小于或等于该安全认证消息中的发送序号中的一个值，例如0，然后将安全认证消息发给移动台。
请参见图7所示，本实施例中的基站控制器1还包括判断模块16，设置为在处理模块将发送序号(可能是接受注册响应消息中的发送序号，也可能是安全认证消息中的发送序号)发送给移动台2之前，判断发送序号与移动台2当前的接收序号是否同步。请参见图8所示，判断模块16包括提取子模块161和判断子模块162；
提取子模块161，设置为获取上一次基站控制器发送给移动台的消息中的序号作为旧发送序号；也即N(U)old(N(U)old初始值为0)；
判断子模块162，设置为判断发送序号N(U)是否大于或等于所述旧发送序号减三十一的值，并小于所述旧发送序号加一的值，即(N(U)old-31)≤N(U)＜N(U)old+1；如果所述发送序号大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，则判定发送序号与移动台当前的接收序号不同步，也即失步。增加该判断机制，可以达到避免失步导致移动台不能入网的同时，尽可能降少消息交互量，提升资源的利用率。
请参见图9所示，本实施例中的移动台2包括：
第二发送模块21，设置为向基站控制器发送注册请求；
第二接收模块22，设置为接收基站控制器发送的重置消息，；
同步模块23，设置为将移动台的接收序号更新为与发送序号同步，将接收序号进行重置，重置为小于或等于发送序号中的一个值，例如0；
注册处理模块24，设置为接收基站控制器对应注册请求反馈的接受注册响应消息；或接收基站控制器1发送的安全认证消息完成安全认证并反馈相应的响应消息发给基站控制器1。
实施例三：
为了更好的理解本发明，下面结合一个应用为例对本发明进行说明。本实施例中的所要解决的技术问题是：基站控制器BSC在服务支持节点设备SGSN不支持重路由过程的情况下独自为移动台MS选取适当的运营商，从而使得移动台MS的PS业务能够在MOCN网络当中正常运行。以MS发送路由区更新请求消息为例进行示例说明。本实施例首先详细阐述由BSC独立完成的重路由过程，然后举例说明N(U)失步的检测及解决方法。
请参见图10所示的重路由过程的第一实施例的示意图，其包括步骤S1001-S1012：
S1001：BSC收到MS发送的路由区更新请求消息，根据当前MOCN网络配置生成SGSN重路由列表；若某运营商所辖SGSN当前状态为不可用，则不包含在该列表当中；
S1002：BSC从上述SGSN重路由列表当中按照一定算法(例如随机算法)选择一个SGSN，记为SGSN-A，将路由区更新请求消息发送给SGSN-A；
S1003：BSC将路由区更新请求消息进行缓存并将SGSN-A进行标识(以表明其被选过)或从尝试列表中移除；
S1004：BSC收到SGSN-A发送的路由区更新拒绝消息；
S1005：BSC将路由区更新拒绝消息截留，并读取出缓存的路由区更新请求消息；
S1006：BSC从SGSN重路由列表当中重新选择一个SGSN，记为SGSN-B，然后将路由区更新请求消息发送给SGSN-B，重路由流程开始；
S1007：BSC将SGSN-B从尝试列表中移除或进行标识；
S1008：BSC收到SGSN-B发送的路由区更新拒绝消息；
S1009：BSC将路由区更新拒绝消息截留，并读取出缓存的路由区更新请 求消息；
S1010：BSC从SGSN重路由列表当中重新选择一个SGSN，记为SGSN-C，然后将路由区更新请求消息发送给SGSN-C；重路由流程继续；
S1011：BSC将SGSN-C从尝试列表当中移除或进行标识；
S1012：BSC收到SGSN-C发送的路由区更新接受消息，将该路由区更新接受消息发送给MS，重路由流程结束。
图11是本实施例重路由方法的N(U)同步过程示意图，该示例中以SGSN-B反馈路由区更新接受消息为例，包括步骤S1101-S1115：
S1101：MS发送序号N(U)为0的路由区更新请求消息；
S1102：BSC将路由区更新请求消息发送给SGSN-A；
S1103：BSC将路由区更新请求消息进行缓存并将SGSN-A从尝试列表中移除；
S1104：BSC收到SGSN-A发送的鉴权请求消息，其中携带的序号N(U)为0；
S1105：BSC首次收到下行数据，令N(U)old＝N(U)；
S1106：BSC该鉴权请求发送给MS；
S1107：MS收到鉴权请求消息，将自身接收序号V(UR)更新为1，然后向SGSN-A发送鉴权响应消息；
S1108：BSC收到SGSN-A发送的路由区更新拒绝消息；
S1109：BSC截留路由区更新拒绝消息，并度去除将缓存的序号N(U)为0的路由区更新请求消息；
S1110：BSC将路由区更新请求消息发送给SGSN-B；
S1111：BSC收到SGSN-B发送的路由区更新接受消息，其中携带的序号N(U)为0；
S1112：由于满足(N(U)old-31)≤N(U)＜N(U)old+1，BSC判定 N(U)失步；
S1113：BSC向MS发送交换标识(Exchange Iditification,XID)消息；
S1114：MS收到交换标识消息后将自身接收序号V(UR)初始化为0；
S1115：BSC向MS发送序号N(U)为0的路由区更新接受消息，重路由流程结束。
一种注册系统，该系统包括所述的基站控制器和所述的移动台。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现所述的多运营商核心网中的注册处理方法。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
本发明实施例方案中，基站控制器在接收到接收移动台发送的注册请求后，将该注册请求发送给服务支持节点设备；当接收到服务支持节点设备反馈的接受注册响应消息后，将其返回给移动台之前，基站控制器先将移动台的接收序号重置为小于或等于接受注册响应消息中的发送序号后，基站控制器再将接受注册响应消息发给移动台。这样移动台的接收序号和接受注册响 应消息中的发送序号可以保持同步，因此能避免序号失步导致移动台无法入网的问题。

Claims (19)

  1. 一种多运营商核心网中的注册处理方法，包括：
    基站控制器接收移动台发送的注册请求；
    基站控制器将该注册请求发送给服务支持节点设备，接收服务支持节点设备反馈的接受注册响应消息；
    基站控制器将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号；
    基站控制器将所述接受注册响应消息发给所述移动台。
  2. 如权利要求1所述的多运营商核心网中的注册处理方法，所述方法还包括：
    在基站控制器接收所述接受注册响应消息之前，接收到服务支持节点设备反馈的安全认证消息时，将所述移动台的接收序号重置为小于或等于所述安全认证消息中的发送序号；
    将所述安全认证消息发给所述移动台。
  3. 如权利要求1所述的多运营商核心网中的注册处理方法，所述方法还包括：
    在所述基站控制器将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号之前，获取所述接受注册响应消息中的发送序号，判断所述发送序号与所述移动台当前的接收序号是否同步。
  4. 如权利要求3所述的多运营商核心网中的注册处理方法，其中，所述基站控制器判断所述发送序号与所述移动台当前的接收序号是否同步包括：
    获取上一次发送给所述移动台的消息中的序号作为旧发送序号；
    判断所述发送序号是否大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，如果所述发送序号大于或等于所述旧发送序 号减三十一的值，并且小于所述旧发送序号加一的值，则判定所述发送序号与所述移动台当前的接收序号不同步。
  5. 如权利要求1-4任一项所述的多运营商核心网中的注册处理方法，其中，所述基站控制器将注册请求发送给服务支持节点设备，接收服务支持节点反馈的接受注册响应消息包括：
    从重路由列表中选择一个服务支持节点设备；
    将所述注册请求发送给当前选择的服务支持节点设备；
    接收所述服务支持节点设备反馈的注册响应消息，如果该注册响应消息为拒绝注册响应消息，则从所述重路由列表其他服务支持节点设备中选择一个重发所述注册请求，直到接收的注册响应消息为接受注册响应消息，或直到选择完所述重路由列表中的所有服务支持节点设备。
  6. 如权利要求5所述的多运营商核心网中的注册处理方法，所述方法还包括：基站控制器在选择完所述重路由列表中的所有服务支持节点设备，并且所有所述服务支持节点设备依次发送所述注册请求后，当接收到的都为拒绝注册响应消息时，将最后一次接收到的拒绝注册响应消息发送给所述移动台。
  7. 如权利要求1-4任一项所述的多运营商核心网中的注册处理方法，其中，所述基站控制器将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号包括：
    所述基站控制器向所述移动台发送交换标识消息将所述移动台的接收序号重置为零。
  8. 如权利要求1-4任一项所述的多运营商核心网中的注册处理方法，其中，所述注册信息为附着请求消息或路由区更新请求消息。
  9. 一种基站控制器，包括：第一接收模块、路由模块、处理模块以及第一发送模块；
    所述第一接收模块，设置为接收移动台发送的注册请求；
    所述路由模块，设置为将所述注册请求发送给服务支持节点设备，接收服务支持节点设备反馈的接受注册响应消息；
    所述处理模块，设置为将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号；
    所述第一发送模块，设置为将所述接受注册响应消息发给所述移动台。
  10. 如权利要求9所述的基站控制器，所述基站控制器还包括安全消息处理模块，设置为在所述路由模块接收到所述接受注册响应消息之前，接收到服务支持节点设备反馈的安全认证消息时，将所述移动台的接收序号重置为小于或等于所述安全认证消息中的发送序号，将所述安全认证消息发给所述移动台。
  11. 如权利要求9所述的基站控制器，所述基站控制器还包括判断模块，设置为在所述处理模块将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号之前，获取所述接受注册响应消息中的发送序号，判断所述发送序号与所述移动台当前的接收序号是否同步。
  12. 如权利要求11所述的基站控制器，其中，所述判断模块包括提取子模块和判断子模块；
    所述提取子模块，设置为获取上一次基站控制器发送给所述移动台的消息中的序号作为旧发送序号；
    所述判断子模块，设置为判断所述发送序号是否大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，如果所述发送序号大于或等于所述旧发送序号减三十一的值，并且小于所述旧发送序号加一的值，则判定所述发送序号与所述移动台当前的接收序号不同步。
  13. 如权利要求9-12任一项所述的基站控制器，其中，所述路由模块包括选择子模块、发送子模块、判断子模块；
    所述选择子模块，设置为从重路由列表中选择一个服务支持节点设备；
    所述发送子模块，设置为将所述注册请求发送给当前选择的服务支持节点设备；
    所述判断子模块，设置为接收所述服务支持节点设备反馈的注册响应消息，如果该注册响应消息为拒绝注册响应消息，则通知所述选择子模块从所述重路由列表其他服务支持节点设备中选择一个并通过所述发送子模块重发所述注册请求，直到接收的注册响应消息为接受注册响应消息，或直到选择完所述重路由列表中的所有服务支持节点设备。
  14. 如权利要求13所述的基站控制器，所述第一发送模块还设置为：在所述判断子模块选择完所述重路由列表中的所有服务支持节点设备，并且所有所述服务支持节点设备依次发送所述注册请求后，当接收到的都为拒绝注册响应消息时，将最后一次接收到的拒绝注册响应消息发送给所述移动台。
  15. 如权利要求9-12任一项所述的基站控制器，其中，所述处理模块将所述移动台的接收序号重置为小于或等于所述接受注册响应消息中的发送序号包括：
    所述处理模块向所述移动台发送交换标识消息将所述移动台的接收序号重置为零。
  16. 如权利要求9-12任一项所述的基站控制器，其中，所述注册信息为附着请求消息或路由区更新请求消息。
  17. 一种移动台，所述移动台包括：
    第二发送模块，设置为向基站控制器发送注册请求；
    第二接收模块，设置为接收基站控制器发送的重置消息；
    同步模块，设置为将接收到的序号更新为与发送序号同步；
    注册处理模块，设置为接收基站控制器对应注册请求反馈的接受注册响应消息；或接收基站控制器发送的安全认证消息完成安全认证并反馈相应的 响应消息发给基站控制器。
  18. 一种注册系统，所述系统包括权利要求9-16任意一项所述的基站控制器和权利要求17所述的移动台。
  19. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现权利要求1至8任意一项所述的多运营商核心网中的注册处理方法。
PCT/CN2016/081014 2015-09-30 2016-05-04 一种mocn网中注册发起及处理方法、基站控制器、移动台、系统和计算机可读存储介质 WO2017054449A1 (zh)

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