WO2014106396A1 - Procédé et dispositif pour l'enregistrement en grappe - Google Patents

Procédé et dispositif pour l'enregistrement en grappe Download PDF

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Publication number
WO2014106396A1
WO2014106396A1 PCT/CN2013/083821 CN2013083821W WO2014106396A1 WO 2014106396 A1 WO2014106396 A1 WO 2014106396A1 CN 2013083821 W CN2013083821 W CN 2013083821W WO 2014106396 A1 WO2014106396 A1 WO 2014106396A1
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Prior art keywords
cluster
user equipment
base station
epc
radio bearer
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PCT/CN2013/083821
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English (en)
Chinese (zh)
Inventor
吕菱
王斌
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中兴通讯股份有限公司
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Publication of WO2014106396A1 publication Critical patent/WO2014106396A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for registering a cluster.
  • LTE Long Term Evolution
  • BACKGROUND OF THE INVENTION Long Term Evolution (LTE) trunking communication system combines LTE technology with a dedicated cluster scheduling system to achieve fast connection, that is, can support one-to-many group call service, and can also support one-to-one Single call service.
  • the process of registering the user equipment (User Equipment, UE for short) in the network before the actual service is a necessary process.
  • the user can accept the network service only after successfully registering.
  • the registration of the terminal is completed in the Attach process (the attach procedure in the LTE protocol).
  • the emergency call does not require an Attach process, which is a special service that is usually not considered at design time.
  • the attach process is always initiated by the terminal.
  • the triggering conditions include multiple types. For example, when the UE is powered on, the UE needs to re-initiate the Attach process.
  • the attach process needs to complete the following: the user and the network authenticate each other; the UE obtains the IP address assigned by the network side; the user location registration; the allocation of the temporary identity; the UE and the Evolved Packet Core (EPC) Establish a default bearer between.
  • FIG. 1 is a standard LTE Attach process.
  • the process is mainly composed of a Radio Resource Control (RRC) connection establishment and a user context establishment.
  • the RRC connection establishment includes steps 1 to 3.
  • the establishment of the Airborne Signalling Radio Bearers 1 (SRB1) is completed, and the dedicated control signaling message can be transmitted on the dedicated signaling bearer after completion; the user context establishment includes step 4 to Step 15.
  • the establishment of the SI-interface application layer signaling protocol (SI Application Protocol, S1AP) interface signaling link between the evolved base station (Evolved Node B, eNB for short) and the EPC, the establishment of the media stream channel, complete the air
  • the establishment of the Signalling Radio Bearers 2 (SRB2) and the Data Radio Bearer (DRB) can transmit a dedicated Non-Access Stratum (NAS) letter. Order and data business media streams.
  • the traditional LTE registration service is completed in the Attach process.
  • the terminal access system Due to the flat design and broadband transmission of the LTE system, the terminal access system has a short delay and has data services. High throughput performance.
  • the signaling bearer and data bearer established by it are proprietary, and each terminal has a corresponding dedicated bearer to support the service.
  • the cluster service is a one-to-many business process, and there is one caller calling user and multiple group calling called users. If the LTE Attach process is used to implement cluster registration, there are two problems: (1) The cluster service must establish multiple dedicated data bearers for multiple called users at the same time. Although this can be achieved, there is a lot of waste in the interface resource utilization between the air interface and the eNB and the EPC.
  • the traditional LTE service is one-to-one, and each terminal has uplink and downlink data.
  • Service service so the data bearer established in the Attach process is allocated with uplink and downlink resources.
  • the characteristics of the cluster service are one-to-many. After the group call is established, only one voice user broadcasts downlink service data. Multiple called users in the group only receive downlink service data and no uplink data service. Therefore, the data bearer established by the LTE Attach process is obviously inappropriate for the cluster group call. For the above two problems, considering the particularity of the cluster call, the utilization of the interface resources is wasted in the process of the cluster communication.
  • a method for cluster registration including: a base station and a user equipment establish a cluster signaling radio bearer; the base station establishes a cluster connection with a cluster EPC, where the cluster EPC is used for trunking communication; The base station transmits, on the cluster signaling radio bearer, information for registering the user equipment between the user equipment and the cluster EPC.
  • the base station receiving the RRC connection setup message sent by the user equipment, where the connection setup message carries the corresponding
  • the cluster parameter information is determined by the base station, according to the cluster parameter information, that the current service of the user equipment is a cluster service; and the base station establishes the cluster signaling radio bearer according to the cluster service and the user equipment.
  • the base station before receiving the connection establishment message sent by the user equipment, the base station further includes: the base station sending a system broadcast message to the user equipment, where the system broadcast message carries a cluster system for indicating support by the base station Identification information.
  • the transmitting, by the base station, the information about the registration between the user equipment and the cluster EPC for registering the user equipment on the cluster signaling radio bearer includes: the base station in the cluster letter And causing the NAS to transmit a NAS message between the user equipment and the cluster EPC; and the base station registers the user equipment according to the NAS message.
  • the transmitting, by the base station, the information about the registration between the user equipment and the cluster EPC for registering the user equipment, on the cluster signaling radio bearer includes: the user equipment passes the base station Accessing the cluster EPC; the user equipment and the cluster EPC perform the interaction of the NAS message on the SRB1 by using the base station; the user equipment determines, according to the NAS message, whether to perform a predetermined operation, where The predetermined operation includes at least one of the following: a security authentication operation, an activation encryption operation, a user equipment capability inquiry operation; if not, directly performing registration of the terminal; if yes, determining a predetermined operation to be performed according to the NAS message And after the execution of the predetermined operation, the registration of the terminal is performed.
  • the base station further includes: the cluster EPC determining Whether the registration of the user equipment has succeeded; if yes, releasing an air interface connection between the base station and the user equipment.
  • the method further includes: determining, in the case that the user equipment is not successfully registered, whether an abnormal situation exists, where the abnormal situation includes at least the following A: the registration is rejected, the security authentication fails, the activation encryption fails, the internal processing of the cluster EPC fails, the internal processing of the base station fails; if yes, the air interface connection between the base station and the user equipment is released.
  • releasing the air interface connection between the base station and the user equipment comprises: deleting the cluster signaling radio bearer on the EPC side of the cluster; and informing the base station to release configuration resources and air interface resources of the base station, where The manner of the notification includes: filling in an indication field in the NAS message, where the indication field is used to notify the base station to release, or the user equipment release indication message is used to notify the base station to release; The air interface connection between the base station and the user equipment.
  • a device for cluster registration including: a first establishing module, configured to establish a cluster signaling radio bearer with a user equipment; and a second establishing module, configured to establish a cluster connection with the cluster EPC,
  • the cluster EPC is used for trunking communication, and the transmission module is configured to transmit, on the cluster signaling radio bearer, information for registering the user equipment between the user equipment and the cluster EPC.
  • the first establishing module includes: a receiving unit, configured to receive an RRC connection setup message sent by the user equipment, where the connection setup message carries cluster parameter information corresponding to the user equipment; And determining, according to the cluster parameter information, that the current service of the user equipment is a cluster service; and the establishing unit, configured to establish the cluster signaling radio bearer according to the cluster service and the user equipment.
  • the transmission module includes: a transmission unit, configured to transmit, on the cluster signaling radio bearer, a NAS message between the user equipment and the cluster EPC; and a registration unit configured to be according to the NAS message pair The user equipment performs registration.
  • the present invention adopts the following method: The base station establishes a cluster signaling radio bearer with the user equipment, and establishes a connection with the cluster EPC for the cluster communication, and the base station transmits the user equipment and the cluster EPC between the cluster signaling radio bearers. Information for registration.
  • the related art is solved. Since the traditional LTE service does not consider the particularity of the trunking call, each terminal will have uplink and downlink data service services in the process of cluster communication, which wastes data resources and interface resources.
  • the problem of utilization, cluster communication by cluster EPC so that only one voice user in the cluster call broadcasts downlink service data, and multiple called users in the group only receive downlink service data, and no uplink data service, thereby improving resource utilization. rate.
  • FIG. 1 is a schematic diagram of an Attach flow according to the related art LTE;
  • FIG. 2 is a flowchart of a method for cluster registration according to an embodiment of the present invention;
  • FIG. 1 is a schematic diagram of an Attach flow according to the related art LTE;
  • FIG. 2 is a flowchart of a method for cluster registration according to an embodiment of the present invention;
  • FIG. 3 is a structural block diagram of an apparatus for registering a cluster according to an embodiment of the present invention;
  • 4 is a structural block diagram of a first establishing module of a device for cluster registration according to an embodiment of the present invention;
  • FIG. 5 is a structural block diagram of a transmitting module of a device for registering a cluster according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a cluster service registration process according to a preferred embodiment of the present invention
  • FIG. 8 is a schematic diagram of a release process after a cluster user registration is completed according to a preferred embodiment of the present invention.
  • a method for registering a cluster is provided.
  • the process of the method is as shown in FIG. 2, including step S202 to step S206:
  • Step S202 the base station establishes a cluster signaling radio bearer with the user equipment;
  • Step S204 the base station establishes a cluster connection with the cluster EPC.
  • the cluster EPC is used for trunking communication.
  • Step S206 The base station transmits, on the cluster signaling radio bearer, information for registering the user equipment between the user equipment and the cluster EPC.
  • the base station establishes a cluster signaling radio bearer with the user equipment, and establishes a connection with the cluster EPC for the cluster communication, where the base station transmits the user equipment and the cluster EPC between the cluster signaling radio bearers. Information for registration.
  • the related technologies are solved. Because the traditional LTE service does not consider the particularity of the trunk call, each terminal will have uplink and downlink data service services in the process of cluster communication, which wastes data resources and interface resources. The problem of utilization, cluster communication by cluster EPC, so that only one call user in the cluster call broadcasts downlink service data, and multiple called users in the group only receive downlink service data, no uplink data service, and thus improve resources. Utilization rate.
  • the base station Before receiving the connection setup message sent by the user equipment, the base station sends a system broadcast message to the user equipment, where the system broadcast message carries the identifier information of the cluster system that is used to indicate the support of the base station, and the base station notifies the user equipment that the cluster communication can be performed.
  • the process of the base station and the user equipment establishing the cluster signaling radio bearer is as follows: The base station receives the RRC connection setup message sent by the user equipment, where the connection setup message carries the cluster parameter information corresponding to the user equipment; the base station according to the cluster parameter information The current service of the user equipment is determined to be a cluster service; the base station establishes a cluster signaling radio bearer according to the cluster service and the user equipment.
  • the communication can be performed according to the communication mode of the cluster service, and the connection is established with the cluster EPC instead of the connection established with the traditional EPC.
  • the objects that establish a connection for communication are different, and the subsequent operations are different.
  • the information for registering the user equipment between the user equipment and the cluster EPC transmitted by the base station on the cluster signaling radio bearer is a NAS message, and the base station performs registration of the user equipment according to the interaction of the NAS message.
  • the user equipment can access the cluster EPC through the base station; then, the user equipment can interact with the cluster EPC, and the message interaction performed by the user equipment is performed by the base station to perform NAS message interaction on the SRB1; the user equipment determines whether to perform a predetermined operation according to the NAS message, for example, , security authentication operation, activation of encryption operations, user device capability query operations, etc. If it is determined that the predetermined operation described above is not required to be performed, the registration of the terminal is directly performed, that is, registration is performed on the cluster EPC; if it is determined that the predetermined operation described above needs to be performed, it is determined according to the NAS message, which operation is required to be performed, And after performing the determined predetermined operation, the terminal is registered.
  • a predetermined operation according to the NAS message for example, security authentication operation, activation of encryption operations, user device capability query operations, etc.
  • the cluster EPC determines whether the registration of the user equipment has succeeded. If the registration has been successfully completed, the air interface connection between the base station and the user equipment is released. If the registration is not successful, it is judged whether there is an abnormal situation, for example, the registration is rejected, the security authentication fails, the activation encryption fails, the internal processing of the cluster EPC fails when the context is not established, or the internal processing of the base station fails when the context is not established.
  • the air interface connection between the base station and the user equipment is released, that is, the cluster signaling radio bearer on the EPC side of the cluster is deleted, and the base station is configured to release the configuration resource and the air interface resource of the base station, where the notification manner includes multiple types, for example, An indication field is filled in the NAS message, where the indication field is used to notify the base station to release, or the base station is released by the user equipment release indication message.
  • the release process ends.
  • the embodiment of the present invention further provides a device for registering a cluster.
  • the block diagram of the device is as shown in FIG.
  • the structure of the first establishing module 10 is as shown in FIG. 4, and includes: a receiving unit 102, configured to receive an RRC connection setup message sent by the user equipment, where the connection setup message carries the user equipment.
  • the determining unit 104 is coupled to the receiving unit 102, and configured to determine, according to the cluster parameter information, that the current service of the user equipment is a cluster service; the establishing unit 106 is coupled to the determining unit 104, and is configured to be established according to the cluster service and the user equipment.
  • Cluster signaling radio bearer The transmission module 30 may also be as shown in FIG. 5, including: a transmission unit 302, configured to transmit a non-access stratum NAS message between the user equipment and the cluster EPC on the trunk signaling radio bearer; the registration unit 304, and the transmission unit 302 Coupling, set to register the user equipment according to the NAS message.
  • the foregoing apparatus may be disposed in a system, and the system may further include: a module configured to send a system broadcast message to the user equipment; a module configured to access the cluster EPC through the base station; And a module in which the cluster EPC performs NAS message interaction on the signaling radio bearer SRB1 by the base station; and a module that determines whether to perform a predetermined operation according to the NAS message.
  • the different modules described above can implement different functions, and the overall combination can achieve the same effect as the method, and details are not described herein. Embodiments of the present invention will be described below in conjunction with the preferred embodiments and the accompanying drawings.
  • the preferred embodiment provides a procedure and method for registering an LTE-based terminal (user equipment), which is supported by an LTE broadband mobile communication system and integrated into a clustering feature, which not only expands the functionality of the LTE but also broadens the functionality of the LTE.
  • the supported cluster system identifier is added to the system broadcast information message of the LTE, so as to notify the terminal to perform cluster service registration in the cluster EPC.
  • the protocol interface between the LTE network elements is extended in the implementation process, which not only realizes the independence of the cluster service registration, but also supports the coexistence of the cluster network and the standard LTE network.
  • the content of the standard LTE air interface message is expanded, and the cluster parameter information is added, for example, the selected Public Land Mobile Network (PLMN) information, the group identification number (ID), and the like.
  • PLMN Public Land Mobile Network
  • ID group identification number
  • Such an air interface message format design can use the original standard LTE air interface signaling or a customized cluster message, so that the implementation of the cluster function is compatible with the original LTE system; for the ground interface, the compatibility with the original LTE system is considered.
  • the cluster service adopts its dedicated core network, namely cluster EPC. The base station and the core network perform terrestrial message transmission through the cluster ground interface message.
  • the interaction information of the terminal registration content is only performed on the cluster SRB1 bearer, and the DRB data bearer is not required to be established, which effectively solves the problem of resource waste.
  • the UE capability information query can be selectively performed.
  • the registration information exchanged between the terminal and the cluster core network (the intermediate cluster EPC of the embodiment is the cluster core network) is transmitted in the NAS message, so that other intermediate network elements are invisible to register the message content, thereby realizing the end-to-end information. Confidentiality and security. After the registration is completed, in order to avoid waste of resources occupied by the eNB configuration, the UE connection needs to be released.
  • Step S602 The base station fills in the support system identifier in the system broadcast system information message, and notifies the terminal to register in the cluster private network.
  • Step S604 The terminal starts to register the call, performs cluster RRC connection establishment, and establishes a cluster SRB1 signaling bearer for transmitting dedicated control signaling.
  • the base station determines, according to the cluster parameter information in the message, that the current service is a cluster service.
  • Step S606 The terminal establishes a cluster ground interface connection between the eNB and the cluster EPC through the process of the eNB accessing the cluster core network.
  • the new cluster ground interface is adopted here to support the coexistence of the LTE public network and the cluster private network.
  • Step S608 The terminal and the cluster EPC perform NAS message exchange on the SRB1 bearer by the eNB, indicate whether to perform security authentication according to the content of the NAS message, activate the encryption operation, and perform the UE capability query operation. These steps are optional.
  • the core network determines whether to perform these steps according to the NAS message sent by the terminal.
  • Step S610 The cluster EPC determines that the registration has been completed according to the content of the NAS message sent by the terminal, and initiates release of the cluster RRC connection.
  • FIG. 7 is a schematic diagram of a cluster service registration process based on the LTE technology according to the present invention. Steps S604 to S610 are further described in detail below through an embodiment. Step S604 is unfolded, that is, steps S101 to S103 in FIG. 7, the process is consistent with the SRB establishment process of the standard LTE, and the content includes all contents of the standard LTE, but the cluster related parameters are added, for example, the selected PLMN information, the group ID Wait. Step S606 is expanded, that is, step S201 in FIG.
  • Step S608 is expanded, that is, steps S301 to S312 and S401 to S403 in FIG.
  • the NASB message exchange is performed on the SRB1 bearer to query the cluster UE capability information.
  • the terminal carries the International Mobile Subscriber Identification Number (IMSI) and the location area of the terminal through the registration request information in the clustered NAS message.
  • the cluster core network then registers with this message.
  • the message interactions of steps S301 to S308 in FIG. 7 are only explanatory diagrams, and do not accurately represent the number of NAS message interactions in the actual process. Perform security authentication and activate the encryption process as needed.
  • Steps S401 to S403 in FIG. 7 are cluster UE capability query flow.
  • the eNB determines whether the UE capability check is needed. Inquiries, if necessary, carry out the process steps, which is an optional process.
  • Steps S309 to S312 in Fig. 7 confirm the registration completion flow for the cluster core network and the terminal. At this point, the terminal completes the registration content.
  • the registration information is carried by the NAS message. Since the NAS message is transparent and direct to the eNB, the end-to-end encryption is realized, and the security and confidentiality are greatly improved.
  • Step S610 is expanded to step S501 in FIG. 7.
  • the release process designed here is not only applicable to the normal scenario released after the registration is completed, but also applies to the exception handling scenario before the user context is established, including: registration rejection; security authentication failure; activation encryption failure; cluster core network appears when no context is established.
  • registration rejection a registered trademark of the registered trademark
  • security authentication failure a registered trademark of the registered trademark
  • activation encryption failure a registered trademark of the registered trademark
  • cluster core network appears when no context is established.
  • the internal processing exception is abnormal; the internal processing exception of the eNB occurs when the context is not established. If the above registration completes the normal scene or the abnormal scene, you need to release it.
  • the cluster core network deletes the core network side data bearer first.
  • the eNB After the core network side bearer is released, the eNB is notified to release the eNB local configuration resource and the air interface resource.
  • the cluster core network sends a UE release indication message to notify the eNB to release.
  • the UE Release Indication message here is a custom message different from the UE context release message in standard LTE.
  • the eNB sends a cluster air interface release message.
  • the cluster RRC connection is released, and the UE is notified to release the SRB bearer.
  • the cluster RRC connection release procedure is similar to standard LTE.
  • the related signaling in the process uses a custom message that is different from the standard LTE protocol.
  • the air interface messages in FIG. 7 and FIG. 8 can use the standard LTE air interface message to identify the cluster service through the extended cluster parameters in the message.
  • the cluster air interface message can also be used to distinguish the cluster service.
  • This message format design is compatible with both the original LTE system and the cluster function.
  • the present embodiment fully considers the speciality of the cluster communication on the basis of the original standard LTE system, and only the SRB1 bearer is established in the air interface access process, and then the NAS layer message interaction is performed. After the registration is completed, the cluster air interface connection is released. Realize the speed and security of registration, and also avoid The air interface resource is occupied for a long time, which saves the air interface resource overhead.
  • the UE capability query operation has been performed in the registration process, the UE access information is not required to be queried, and the UE access time is shortened.
  • Such a process implementation not only follows the LTE standard that is now mature, but also has the independence of clusters.
  • the introduction of the new cluster ground interface has no effect on the standard LTE S1 interface, and it can be easily implemented in a wireless system where the LTE public network and the cluster private network coexist.
  • this embodiment does not distinguish between time division duplex LTE or frequency division duplex LTE, and has better compatibility.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

L'invention concerne un procédé et un dispositif pour l'enregistrement en grappe. Ledit procédé se déroule de la manière suivante : une station de base et un équipement utilisateur mettent en place une porteuse radio pour la signalisation de grappe; la station de base et un EPC de grappe établissent une connexion en grappe, ledit EPC de grappe servant à la communication en grappe; et la station de base transmet des informations, qui sont utilisées pour enregistrer l'équipement utilisateur, entre ledit équipement utilisateur et ledit EPC de grappe, par le biais de la porteuse radio pour la signalisation de grappe. L'application de la présente invention apporte une solution au problème qui se pose car, le service LTE classique n'ayant pas pris en compte la spécificité d'un appel en grappe, chaque terminal a, dans un processus de communication en grappe, un service de transmission de données de liaison montante et de liaison descendante, ce qui réduit le ratio d'utilisation des ressources de transmission de données et des ressources d'interface. De plus, la communication en grappe est réalisée par l'intermédiaire d'un EPC de grappe, de sorte que, dans l'appel en grappe, un seul utilisateur détient des données de service de liaison descendante pour la diffusion du droit de parole, une pluralité d'utilisateurs appelés dans un groupe ne reçoivent que les données de service de liaison descendante, et il n'y a pas de service de transmission de données de liaison montante, ce qui améliore le ratio d'utilisation des ressources.
PCT/CN2013/083821 2013-01-05 2013-09-18 Procédé et dispositif pour l'enregistrement en grappe WO2014106396A1 (fr)

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CN103037472A (zh) * 2013-01-05 2013-04-10 中兴通讯股份有限公司 集群登记的方法及装置

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