WO2011127723A1 - 一种处理mtc优先警报消息的方法和系统 - Google Patents

一种处理mtc优先警报消息的方法和系统 Download PDF

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Publication number
WO2011127723A1
WO2011127723A1 PCT/CN2010/078046 CN2010078046W WO2011127723A1 WO 2011127723 A1 WO2011127723 A1 WO 2011127723A1 CN 2010078046 W CN2010078046 W CN 2010078046W WO 2011127723 A1 WO2011127723 A1 WO 2011127723A1
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Prior art keywords
message
pam
mtc
mtc device
processing
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PCT/CN2010/078046
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English (en)
French (fr)
Inventor
吴昊
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中兴通讯股份有限公司
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Publication of WO2011127723A1 publication Critical patent/WO2011127723A1/zh

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • the present invention relates to a management technique for a machine type communication (MTC) terminal, and more particularly to a method and system for processing an MTC priority alert message.
  • MTC machine type communication
  • the existing cellular radio communication system is composed of a core network (CN, Core Network), an access network (RAN, Radio Access Network), and a terminal, as shown in FIG.
  • the CN is responsible for non-access stratum transactions, such as terminal location update, and the CN is an anchor point of the user plane
  • the RAN is composed of a base station, or is composed of a base station and a base station controller, and the RAN is responsible for access layer transactions, such as management of radio resources.
  • a user equipment (UE, User Equipment) refers to various devices that can communicate with a cellular wireless communication network, such as a mobile terminal, a notebook computer, and the like.
  • the MTC service is a service that communicates between the machine and the machine. In the M2M service, no human intervention is required. All communication is performed by the machine.
  • the MTC service obtains data through sensors such as sensors, and then reports the data to the communication module.
  • the application of MTC business such as: logistics monitoring, security monitoring, telemedicine detection, remote meter reading, etc.
  • the data reported by the MTC service is managed by a mobile operator or a specific server of a dedicated MTC operator and can be viewed by MTC users or MTC managers. In this process, the device that obtains the data required by the service is the MTC device.
  • the Mobility Management Entity obtains the subscription information of the MTC device from the Home Subscriber Server (HSS) and saves it locally.
  • MME is used in the core network for management
  • the entity controlling the signaling of the user terminal is responsible for access control, including: authentication control, identity assignment, user identity and device identity verification, signaling plane encryption, consistency protection with the base station (eNB), 2G/3G And the conversion of security parameters and quality of service parameters (QoS, Quality of Service) parameters with the Evolved Packet System (EPS), access permission control, determining whether the requested resources can be obtained, and reserving these resources, legal interception, Mobility management (implementing tracking and recording of the current location of the UE), session management, related operations on EPS bearers, and network element selection.
  • EPS Evolved Packet System
  • the HSS is an entity in the telecommunication network that is responsible for storing identity information, authentication information, and authorization information of users or terminal devices. Depending on the situation, the HSS can be used to store the identity information of the user and the binding information of the user and the terminal device, or only the identity information of the user (the binding information of the user and the terminal device can be saved by the gateway), or the identity of the terminal device can be directly saved. information.
  • the HSS is also responsible for the user's subscription database, as well as the user's authentication and authorization.
  • the service platform can query user or terminal information from the HSS.
  • the data packets are transmitted in the core network through the service gateway and the packet data network gateway.
  • the service gateway is responsible for the storage, routing and data forwarding functions of the packet service bearer. It can be used as an anchor for inter-base station handover and an anchor between different access modes defined by the 3rd Generation Partnership Project (3GPP). Point, and bear the collection of billing information.
  • the packet data network gateway is responsible for the allocation of the IP address, the selection of the Policy and Charging Rules Function (PCRF), the storage and management of the packet service bearer, the routing and data forwarding functions, and the terminal (including the MTC device).
  • the anchor of communication with the external network (such as the MTC server) also bears the collection of billing information.
  • the data is sent by the MTC device to the serving gateway, and then sent by the serving gateway to the packet data network gateway, and the packet data network gateway sends the received MTC data to the MTC server.
  • the data is sent by the MTC server to the packet data network gateway, and the packet data network gateway sends the received data to the service gateway, and finally the service gateway will The MTC data is sent to the MTC device.
  • the MTC device does not register to the network or does not establish a packet data network (PDN) connection, if it wants to send data, it needs to send an attach request or service request signaling to the MME first; the MME obtains the information from the HSS.
  • the subscription data authenticates the MTC device. After the authentication is passed, the user is allowed to access the network, and the service gateway is selected for the PDN bearer to establish a PDN bearer for the MTC device to send data. After the bearer is established, the MTC device sends the data to the serving gateway, and then the serving gateway forwards the received MTC data to the MTC server in order.
  • PDN packet data network
  • the MTC service introduces some features different from the traditional mobile communication, such as: Priority Alarm Message (PAM) feature, which allows the MTC device to transmit better than other features when it triggers a PAM. And the network can be processed and sent to the MTC server better than other features.
  • PAM Priority Alarm Message
  • the operator sets and activates the PAM feature in the subscription information of the MTC device and stores it in the HSS.
  • the processing of PAM characteristics is not considered. That is to say, the physical function module in the existing 3GPP core network does not preferentially prioritize an MTC message, that is, even if the terminal sends a PAM message before the network entity function is enhanced, the network only It will be treated as normal MTC data, which may result in the rejection or delay of the transmission of the PAM message, so that the requirement that the PAM message can be prioritized cannot be achieved.
  • this feature defines an authorization time period. The MTC device only allows access or data transmission during this time period, and the network will reject access requests outside the time period. And data transmission; then the PAM message sent outside the time period will not be processed by the network, and thus the requirement that the PAM message can be prioritized cannot be satisfied. Summary of the invention
  • the main object of the present invention is to provide a method for processing an MTC priority alert message. Methods and systems to meet the need for prioritizing PAM messages.
  • the present invention provides a method of processing a machine type communication (MTC) priority alert message, the method comprising:
  • the MTC device carries a priority alert message (PAM) identifier in the message sent to the network entity.
  • PAM priority alert message
  • the network entity After receiving the message from the MTC device, the network entity preferentially processes the request of the corresponding MTC device according to the indication of the PAM identifier in the message. Data is sent.
  • PAM priority alert message
  • the message sent by the MTC device is: an access request message or message data
  • the PAM identifier is carried in the access request message or message data.
  • the access request message is: an attach request message, a connection request message, or a service request message.
  • the method further includes: after the network entity receives the message from the MTC device, if the message carries the PAM identifier, and the PAM feature of the MTC device is in an active state, the network entity preferentially processes the corresponding MTC device. Request and data transmission.
  • the preferentially processing the request and data transmission corresponding to the MTC device including at least one of the following operations: preferentially selecting a monthly service gateway and/or a packet data network gateway for the MTC device; preferentially establishing a packet service for the MTC device Carrying; preferentially transmitting message data from the MTC device; when other features other than the PAM feature are simultaneously activated, the PAM message is sent and received preferentially regardless of whether the processing mechanism conforms to other characteristics.
  • the PAM message is sent and received preferentially, including:
  • the PAM message is sent outside the authorized transmission time, the PAM message is still received and processed, or an access request message for transmitting the PAM message is received; or if the network load exceeds a predetermined threshold when the PAM message is sent, the station is still received and processed.
  • a PAM message, or an access request message that sends a PAM message is
  • the present invention also provides a system for processing an MTC priority alert message, the system comprising: MTC devices and network entities, where
  • the MTC device is configured to carry a PAM identifier in a message sent to the network entity, where the network entity is configured to: after receiving the message from the MTC device, preferentially process the corresponding MTC device according to the indication of the PAM identifier in the message Request and data transmission.
  • the message sent by the MTC device is: an access request message or message data
  • the PAM identifier is carried in the access request message or message data.
  • the access request message is: an attach request message, a connection request message, or a service request message.
  • the network entity is further configured to: after receiving the message from the MTC device, the message carries the PAM identifier, and the PAM feature of the MTC device is in an active state, and the request and data transmission of the corresponding MTC device are preferentially processed.
  • the network entity is further configured to: preferentially select a serving gateway and/or a packet data network gateway for the MTC device; preferentially establish a packet service bearer for the MTC device; preferentially send message data from the MTC device; When other features of the PAM feature are activated at the same time, the PAM message is sent and received preferentially regardless of whether the processing mechanism of other characteristics is met.
  • the network entity is further configured to: when the PAM message is sent outside the authorized sending time, still receive and process the PAM message, or send an access request message of the PAM message; or when the PAM message is sent, the network load Exceeding the predetermined threshold, the PAM message is still received and processed, or an access request message for sending a PAM message is received.
  • the present invention provides a method and system for processing an MTC priority alert message.
  • the MTC device carries a PAM identifier in a message sent to a network entity.
  • the network entity After receiving a message from the MTC device, the network entity according to the indication of the PAM identifier in the message, The request and data transmission corresponding to the MTC device are preferentially processed.
  • the need for prioritized processing of PAM messages can be met.
  • FIG. 1 is a schematic structural diagram of a conventional cellular wireless communication system
  • 2 is a flowchart of a method for processing an MTC priority alert message according to the present invention
  • FIG. 3 is a schematic structural diagram of user plane data according to an embodiment of the present invention. detailed description
  • a method for processing an MTC priority alert message provided by the present invention mainly includes the following steps:
  • Step 201 The MTC device carries the PAM identifier in the message sent to the network entity.
  • the method of the present invention mainly targets three situations: 1.
  • the MTC device is not connected to the network or is not registered in the network; 2.
  • the MTC device is connected to the network, but the packet service bearer is not established; 3.
  • the MTC device is connected to the network, and is established. Packet service bearer.
  • the message sent by the MTC device to the network entity is an access request message or message data, where the access request message further includes: an attach request message, a connection request message, and a service request message.
  • the MTC device is in different states, it will send different access request messages or message data.
  • the MTC device when the MTC device sends a PAM message, the MTC device sends an attach request message to the network entity, and carries the PAM identifier in the request message.
  • the network entity such as the MME
  • the request for preferentially processing the device includes: preferentially allocating network resources; or preferentially selecting a monthly service gateway and/or a packet data network gateway; or when other features are simultaneously activated, whether or not the processing mechanism conforms to other characteristics, Priority is given to the sending and receiving of PAM messages.
  • the PAM message For example: if the PAM message is sent outside the authorized sending time, the PAM message is still received and processed, or an access request message for sending the PAM message is received; if the network load exceeds a predetermined threshold when the PAM message is sent, the PAM message is still received and processed.
  • a PAM message, or an access request message that sends a PAM message For the MTC device in the second case, when the MTC device sends a PAM message, it sends a connection request message or a service request message to the network entity, and carries the PAM identifier in the request message.
  • the network entity After receiving the connection request message or the service request message, the network entity (such as the MME) preferentially processes the request of the MTC device if the service request message includes the PAM identifier.
  • the so-called connection request message is initiated by the MTC device in the process of transitioning from the idle state to the connected state; the so-called service request message is initiated by the MTC device requesting to establish a packet service bearer in the connected state.
  • the request for preferentially processing the device includes: preferentially allocating network resources; or preferentially selecting a service gateway and/or a packet data network gateway; or when other features are simultaneously activated, regardless of whether the processing mechanism conforms to other characteristics, priority is given to Send and receive PAM messages.
  • the PAM message is still received and processed, or the access request message for sending the PAM message; if the network load exceeds the predetermined threshold when the PAM message is sent, the PAMS message is still received and processed.
  • a PAM message, or an access request message that sends a PAM message if the time of sending the PAM message is outside the authorized sending time, the PAM message is still received and processed, or the access request message for sending the PAM message; if the network load exceeds the predetermined threshold when the PAM message is sent, the PAMS message is still received and processed.
  • a PAM message, or an access request message that sends a PAM message if the time of sending the PAM message is outside the authorized sending time, the PAM message is still received and processed, or the access request message for sending the PAM message; if the network load exceeds the predetermined threshold when the PAM message is sent, the PAMS message is still received and processed.
  • a PAM message, or an access request message that sends a PAM message if the time of sending the
  • the PAM identifier is added to the message data, and the identifier is used to indicate that this is a PAM message data.
  • the network entity such as the service gateway
  • Embodiment 1 of the present invention is directed to a case where an MTC device is not connected to a network.
  • the MTC user first defines the conditions for triggering the PAM message, for example: When the vending machine's goods are sold out, the transmission of the PAM message is triggered.
  • the MTC device in the offline state meets the PAM triggering condition, the MTC device sends an attach request message to the MME, and carries the PAM identifier in the attach request message, where the identifier is used to indicate that the current MTC device will send the PAM message.
  • the information element added to the content of the attach request message sent by the MTC device to the MME for indicating the PAM is as shown in Table 1 below: PAM indication O 1
  • the newly added information element "PAM indication" is an optional information element with a length of 1 bit.
  • the information bit is set to 1, the current attachment request is used to request to send a PAM message;
  • the bit does not exist or the value is set to 0, it indicates that there is no need to send a PAM message.
  • the indication of the PAM may be added in the UE network capability of the attach request message, and the added information element for indicating the PAM is as shown in Table 2 below:
  • the 7th digit of the octal representation is extended, and the 5th bit of the digit is used to perform the PAM identification.
  • the bit is set to 1 to indicate that the PAM message needs to be sent currently, and the bit is set to 0. PAM is not currently sent.
  • the MME After receiving the attach request message of the MTC device, the MME performs security authentication according to the information in the attach request message. After the security authentication, the MME determines whether the PAM feature of the MTC device is activated according to the subscription information obtained from the HSS, and then Checking from the read attach request message whether there is an indication indicates that the MTC device is to send a PAM message. If the above two conditions are met, resources are preferentially allocated to the MTC device, and/or the serving gateway is selected, and/or the packet data network gateway is selected, and/or a packet service bearer is established. If the attach request message is The network entity still receives and processes the request sent outside the authorized time of the MTC device; if the network load exceeds the specified threshold when the attach request is sent at this time, the network entity still receives and processes the request.
  • Embodiment 2 of the present invention is directed to a case where an MTC device is connected to a network but a packet service bearer is not established.
  • the MTC user first defines the conditions for triggering the PAM message, for example: When the vending machine's goods are sold out, the transmission of the PAM message is triggered.
  • the MTC device in the idle state in which the MTC device registers to the network but does not establish a data transmission bearer
  • the MTC device satisfies the PAM trigger condition
  • the MTC device sends a connection request message or a service request message to the network entity MME, and the connection is
  • the request message or the service request message carries a PAM identifier, and the identifier is used to indicate that the current MTC device will send the PAM message.
  • the contents of the service request message sent by the MTC device to the MME are as shown in Table 3 below:
  • connection request message sent by the MTC device to the MME are as shown in Table 4 below:
  • the newly added information element "PAM indication" is an optional information element, and the length is 1 bit.
  • the information bit is set to 1, the current attachment request message is used to request to send the PAM. Message; When the information bit does not exist or the value is set to 0, it indicates that there is no need to send a PAM message.
  • the MME After receiving the connection request message or the service request message of the MTC device, the MME performs security authentication according to the information in the connection request message or the service request message. After the security authentication, the MME determines the MTC device according to the subscription information obtained from the HSS. Whether the PAM feature is activated, and then check from the read connection request message or service request message whether there is an indication that the MTC device is to send a PAM message. If the above two conditions are met, the service gateway, and/or the packet data network gateway are preferentially selected for the MTC device, and/or a packet service bearer is established.
  • the case where the MTC device is connected to the network also establishes the packet service bearer.
  • the MTC user first defines the conditions for triggering the PAM message, for example: When the vending machine's goods are sold out, the transmission of the PAM message is triggered.
  • the MTC device When the MTC device in the connected state needs to send a PAM message, the MTC device sends the message as user plane data, that is, the base station is used as a relay to send to the serving gateway; when the MTC device sends the signal to the base station, it is controlled by the air interface radio resource ( RRC (Radio Resource Control) protocol or Packet Data Convergence Protocol (PDCP); transmitted by the base station to the serving gateway through the S1-U protocol, the S1-U protocol is used between the base station and the serving gateway The protocol for sending data, all data transmitted between them is encapsulated by the protocol. Then, the identifier of the PAM for the user plane protocol must be added in the S1-U protocol data packet, and on this basis, it can also be added in the PDCP data packet and/or the PAM message data.
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • a bit indicator bit may be added before the first bit of the PAM message data.
  • the bit value When the bit value is 1, it indicates that the message 7 carries a PAM message.
  • the bit value When the bit value is 0, it is identified that the message 7 is not a PAM message; or, the existing null bit or the added bit bit may be used in the Sl-U, and/or RRC/PDCP protocol header to indicate the PAM.
  • the bit When the bit is set to 1, it indicates that the message is a PAM message. When it is 0, it indicates that the message is not a PAM message.
  • the service gateway After the service gateway receives the message, it can learn whether the current message is a PAM message by decoding the packet header or the data. If yes, the current packet service bearer is preferentially used to send the message to the MTC server.
  • the present invention also provides a system for processing an MTC priority alert message, including an MTC device and a network entity.
  • the MTC device is configured to carry the PAM identifier in the message sent to the network entity.
  • the network entity after receiving the message from the MTC device, preferentially processes the request and data transmission of the corresponding MTC device according to the indication of the PAM identifier in the message.
  • the message sent by the MTC device is: an attach request message, a service request message, or message data; correspondingly, the PAM identifier is carried in an attach request message, a connection request message, a service request message, or message data.
  • the network entity is further configured to: after receiving the message from the MTC device, the message carries the PAM identifier, and the PAM feature of the MTC device is in an active state, and the request and data transmission corresponding to the MTC device are preferentially processed.
  • Priorityly processing the request and data transmission of the corresponding MTC device including at least one of the following operations: preferentially selecting a serving gateway and/or a packet data network gateway for the MTC device; preferentially establishing a packet service bearer for the MTC device; preferentially transmitting the MTC device from the MTC device Message data;
  • the PAM message is sent and received preferentially regardless of whether the processing mechanism of other characteristics is met.
  • the method further includes: if the time of sending the PAM message is outside the authorized sending time, still receiving and processing the PAM message, or sending an access request message of the PAM message; if the network load exceeds a predetermined threshold when the PAM message is sent, still receiving and processing The PAM message, or an access request message that sends a PAM message.

Abstract

本发明公开了一种处理机器类型通信（MTC）优先警报消息的方法，MTC设备在发送给网络实体的消息中携带优先警报消息（PAM）标识；网络实体接收到来自MTC设备的消息后，根据消息中PAM标识的指示，优先处理对应MTC设备的请求和数据发送。本发明还公开了一种处理MTC优先警报消息的系统。通过本发明的方法和系统，能够满足对PAM消息优先处理的需求。

Description

一种处理 MTC优先警报消息的方法和系统 技术领域
本发明涉及机器类型通信（MTC , Machine Type Communication )终端 的管理技术， 尤其涉及一种处理 MTC优先警报消息的方法和系统。 背景技术
现有的蜂窝无线通信系统如图 1所示， 由核心网（CN, Core Network )、 接入网 （RAN, Radio Access Network )和终端组成。 其中， CN负责非接 入层事务， 例如终端位置更新等， 且 CN是用户面的锚点； RAN由基站、 或者由基站和基站控制器组成， RAN负责接入层事务， 例如无线资源的管 理， 基站之间可以根据实际情况存在物理或逻辑上的连接， 如图 1 中的基 站 1与基站 2、或者基站 3之间的连接， 并且每个基站可以与一个或者一个 以上的 CN节点连接； 终端即用户设备 ( UE , User Equipment )是指可以与 蜂窝无线通信网络通信的各种设备， 如移动终端、 笔记本电脑等。
MTC业务即机器与机器之间进行通信的业务， 在 M2M业务中不需要 人为的参与， 所有的通信都由机器自主完成， MTC业务通过传感器等感知 设备获得数据， 然后通过通信模块将数据上报给移动通信网络， 并通过移 动通信网络接入到公共数据网。 MTC业务的应用 4艮广， 例如： 物流监控、 安全监测、 远程医疗检测、 远程抄表等。 MTC业务上报的数据由移动运营 商或专门的 MTC运营商的特定服务器进行管理， 可供 MTC用户或 MTC 管理者查看。 在这个过程中， 获取业务所需数据的设备即为 MTC设备。
在 MTC 设备附着到网络上时， 移动性管理实体 （MME , Mobility Management Entity )从用户归属服务器（HSS, Home Subscriber Server ) 中 获得该 MTC设备的签约信息， 并保存在本地。 MME是核心网中用于管理 用户终端控制信令的实体， 负责接入控制， 包括： 鉴权控制、 标识指配、 用户标识和设备标识验证、信令面加密、与基站（ eNB )之间的一致性保护、 2G/3G与演进分组系统（EPS , Evolved Packet System )之间安全参数以及 服务质量（QoS , Quality of Service )参数的转换、 接入许可控制、 决定是 否可以获得请求的资源并预留这些资源、 合法监听， 移动性管理（实现对 UE当前位置的跟踪和记录）、 会话管理、 对 EPS承载的相关操作、 以及网 元选择等。 HSS 是电信网络中负责保存用户或终端设备的身份信息、 认证 信息和授权信息等的实体。 根据不同情况， HSS 可用于保存用户的身份信 息及用户和终端设备的绑定信息， 或只保存用户的身份信息 （可由网关保 存用户和终端设备的绑定信息）， 或直接保存终端设备的身份信息。 HSS还 负责用户的签约数据库， 以及执行用户的身份验证和授权等。 业务平台可 从 HSS查询用户或终端信息。
在 MTC设备与 MTC服务器之间的数据通信， 其数据包在核心网通过 服务网关和分组数据网络网关进行传递。 服务网关负责对分组业务承载的 存储、 路由和数据转发功能， 可以作为基站间切换的锚点以及第三代合作 伙伴计划 （ 3GPP, 3rd Generation Partnership Project )定义的接入不同接入 方式间的锚点， 并承担计费信息收集。 分组数据网络网关负责 IP地址的分 配， 策略与计费规则功能（PCRF, Policy and Charging Rules Function ) 的 选择， 对分组业务承载的存储和管理， 路由和数据转发功能， 作为终端（包 括 MTC设备 )与外部网络通信 (例如 MTC服务器） 的锚点， 同时还承担 计费信息收集。 当数据从 MTC设备发送到 MTC服务器时， 数据由 MTC 设备发送给服务网关， 然后由服务网关发送到分组数据网络网关， 分组数 据网络网关再将接收到的 MTC数据发送到 MTC服务器。 当数据从 MTC 服务器发送到 MTC设备时，数据由 MTC服务器发送到分组数据网络网关， 分组数据网络网关将接收到的数据发送到服务网关， 最后由服务网关将 MTC数据发送到 MTC设备。
MTC设备在没有注册到网络或没有建立分组数据网络（PDN, Packet Data Network )连接时， 如果要发送数据， 需要先发送附着 （attach )请求 或业务请求信令到 MME; MME通过从 HSS获得的签约数据对该 MTC设 备进行鉴权， 在鉴权通过后， 允许其接入到网络， 并为其选择服务网关， 建立 PDN承载用于 MTC设备发送数据。 在承载建立以后， MTC设备发送 数据到服务网关， 然后服务网关将收到的 MTC数据按顺序转发到 MTC服 务器。
目前， MTC业务引入了一些与传统移动通信不同的特性， 如： 优先警 才艮消息 （PAM, Priority Alarm Message )特性， 该特性允许当 MTC设备触 发一条 PAM时， 能优于其他特性进行发送， 且网络能优于其他特性给予处 理并发送到 MTC服务器。 该特性需要在 MTC用户签约某 MTC设备时， 运营商在该 MTC设备的签约信息中设置并激活 PAM特性，存储在 HSS中。
然而， 在现有的对 MTC特性的网络增强方案中， 并没有考虑对 PAM 特性的处理。也就是说，现有的 3GPP核心网络中的实体功能模块并不会对 某条 MTC消息进行特别优先处理， 即在没有对网络实体功能进行增强前， 即使终端发送了一条 PAM消息， 网络也只会作为普通的 MTC数据处理， 由此可能导致 PAM消息的发送被拒绝或延迟， 从而不能达到 PAM消息能 被优先处理的需求。尤其是在当时间控制（ Time Controlled )特性被激活时， 该特性定义了一个授权时间段， MTC设备只允许在该时间段内接入或发送 数据， 网络将拒绝该时间段以外的接入请求和数据发送； 那么对于该时间 段以外发送的 PAM消息， 将不会被网络处理， 也就无法满足 PAM消息能 被优先处理的需求。 发明内容
有鉴于此，本发明的主要目的在于提供一种处理 MTC优先警报消息的 方法和系统， 以满足对 PAM消息优先处理的需求。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供了一种处理机器类型通信（MTC )优先警报消息的方法， 该方法包括：
MTC设备在发送给网络实体的消息中携带优先警报消息（ PAM )标识； 所述网络实体接收到来自 MTC设备的消息后， 根据所述消息中 PAM 标识的指示， 优先处理对应 MTC设备的请求和数据发送。
所述 MTC设备发送的消息为： 接入请求消息或消息数据；
相应的， 所述 PAM标识携带在所述接入请求消息或消息数据中。
所述接入请求消息为： 附着请求消息、 连接请求消息或业务请求消息。 该方法进一步包括： 所述网络实体在接收到来自 MTC设备的消息后， 如果所述消息中携带 PAM标识，且所述 MTC设备的 PAM特性为激活状态， 则所述网络实体优先处理对应 MTC设备的请求和数据发送。
所述优先处理对应 MTC设备的请求和数据发送， 包括以下操作中的至 少一种： 优先为所述 MTC设备选择月良务网关和 /或分组数据网络网关； 优 先为所述 MTC设备建立分组业务承载； 优先发送来自所述 MTC设备的消 息数据； 当有除 PAM特性的其他特性同时激活时， 无论是否符合其他特性 的处理机制， 优先处理 PAM消息的收发。
所述当有除 PAM特性的其他特性同时激活时， 无论是否符合其他特性 的处理机制， 优先处理 PAM消息的收发， 具体包括：
如果 PAM消息发送的时间在授权发送时间之外， 仍然接收和处理所述 PAM消息、 或发送 PAM消息的接入请求消息； 或如果 PAM消息发送时 , 网络负载超过预定门限， 仍然接收和处理所述 PAM消息、 或发送 PAM消 息的接入请求消息。
本发明还提供了一种处理 MTC 优先警报消息的系统， 该系统包括： MTC设备和网络实体， 其中，
所述 MTC设备， 用于在发送给网络实体的消息中携带 PAM标识； 所述网络实体， 用于接收到来自 MTC设备的消息后， 根据所述消息中 PAM标识的指示， 优先处理对应 MTC设备的请求和数据发送。
所述 MTC设备发送的消息为： 接入请求消息或消息数据；
相应的， 所述 PAM标识携带在所述接入请求消息或消息数据中。
所述接入请求消息为： 附着请求消息、 连接请求消息或业务请求消息。 所述网络实体进一步用于， 在接收到来自 MTC设备的消息后， 所述消 息中携带 PAM标识，且所述 MTC设备的 PAM特性为激活状态， 则优先处 理对应 MTC设备的请求和数据发送。
所述网络实体进一步用于， 优先为所述 MTC设备选择服务网关和 /或 分组数据网络网关； 优先为所述 MTC设备建立分组业务承载； 优先发送来 自所述 MTC设备的消息数据； 当有除 PAM特性的其他特性同时激活时， 无论是否符合其他特性的处理机制， 优先处理 PAM消息的收发。
所述网络实体进一步用于， 在 PAM消息发送的时间在授权发送时间之 外时 , 仍然接收和处理所述 PAM消息、 或发送 PAM消息的接入请求消息； 或在 PAM消息发送时， 网络负载超过预定门限，仍然接收和处理所述 PAM 消息、 或发送 PAM消息的接入请求消息。
本发明所提供的一种处理 MTC优先警报消息的方法和系统， MTC设 备在发送给网络实体的消息中携带 PAM标识； 网络实体接收到来自 MTC 设备的消息后， 根据消息中 PAM标识的指示， 优先处理对应 MTC设备的 请求和数据发送。 通过本发明的方法和系统， 能够满足对 PAM消息优先处 理的需求。 附图说明
图 1为现有的蜂窝无线通信系统的结构示意图； 图 2为本发明一种处理 MTC优先警报消息的方法流程图； 图 3为本发明实施例中用户面数据的结构示意图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 本发明所提供的一种处理 MTC优先警报消息的方法， 如图 2所示， 主 要包括以下步骤：
步骤 201 , MTC设备在发送给网络实体的消息中携带 PAM标识。 步骤 202,网络实体接收到来自 MTC设备的消息后，根据该消息中 PAM 标识的指示， 优先处理对应 MTC设备的请求和数据发送。
本发明的方法主要针对三种情况： 一、 MTC设备没有连接到网络或未 在网络注册；二、 MTC设备连接到网络，但未建立分组业务承载； 三、 MTC 设备连接到网络， 并建立了分组业务承载。 在这三种情况下， MTC设备发 送给网络实体的消息为接入请求消息或消息数据， 其中， 接入请求消息又 包括： 附着请求消息、 连接请求消息和业务请求消息。 MTC设备处于不同 的状态下， 会发送不同的接入请求消息或消息数据。
对于第一种情况下的 MTC设备， MTC设备要发送 PAM消息时， 发送 附着请求消息给网络实体，并在该请求消息中携带 PAM标识。网络实体（如 MME )在接收到附着请求消息后， 如果附着请求消息中包含 PAM标识， 则优先处理该 MTC设备的请求。 其中， 优先处理该设备的请求包括： 优先 分配网络资源； 或优先为其选择月良务网关和 /或分组数据网络网关； 或当有 其他特性同时激活时， 不论是否符合其他特性的处理机制， 优先处理 PAM 消息的收发。 例如： 如果 PAM消息发送的时间在授权发送时间之外， 仍然 接收和处理该 PAM消息、或发送 PAM消息的接入请求消息； 如果 PAM消 息发送时， 网络负载超过预定门限， 仍然接收和处理该 PAM消息、 或发送 PAM消息的接入请求消息。 对于第二种情况下的 MTC设备， MTC设备要发送 PAM消息时， 发送 连接请求消息或业务请求消息给网络实体， 并在该请求消息中携带 PAM标 识。 网络实体（如 MME )在接收到连接请求消息或业务请求消息后， 如果 业务请求消息中包含 PAM标识， 则优先处理该 MTC设备的请求。 所谓连 接请求消息， 是由 MTC设备在空闲状态向连接状态转换的过程中发起的； 所谓业务请求消息，是由 MTC设备在连接状态下请求建立分组业务承载时 发起的。 其中， 优先处理该设备的请求包括： 优先分配网络资源； 或优先 为其选择服务网关和 /或分组数据网络网关； 或当有其他特性同时激活时， 不论是否符合其他特性的处理机制， 优先处理 PAM消息的收发。 例如： 如 果 PAM消息发送的时间在授权发送时间之外， 仍然接收和处理该 PAM消 息、 或发送 PAM消息的接入请求消息； 如果 PAM消息发送时 , 网络负载 超过预定门限， 仍然接收和处理该 PAM消息、 或发送 PAM消息的接入请 求消息。
对于第三种情况下的 MTC设备， MTC设备要发送 PAM消息数据时， 在该消息数据中增加 PAM标识，该标识用于指示这是一条 PAM消息数据。 网络实体（如服务网关）在接收到该条消息后， 如果读取到有 PAM标识， 则优先将其发送到 MTC服务器。
下面结合具体实施例对上述处理 MTC 优先警 消息的方法进一步详 细阐述。
本发明的实施例一， 针对 MTC设备没有连接到网络的情形。 MTC用 户首先定义触发 PAM消息的条件， 例如： 当自动售货机的货物售空时， 触 发 PAM消息的发送。 当处于离线状态的 MTC设备满足 PAM触发条件时， MTC设备发送附着请求消息给 MME,并在该附着请求消息中携带 PAM标 识， 该标识用于指示当前 MTC设备将发送 PAM消息。 MTC设备发送到 MME的附着请求消息内容中新增的用于指示 PAM的信息元如下表 1所示： PAM indication O 1
表 1
新增的信息元 "PAM指示 （PAM indication )" 为可选的信息元， 长度 为 1个 bit,当该信息位设置值为 1时，标识当前附着请求用于请求发送 PAM 消息； 当该信息位不存在或设置值为 0时， 表示当前没有发送 PAM消息的 需求。
除上述指示 PAM 消息的方式以外， 还可以在附着请求消息的信息元 UE网络能力 （ UE network capability ) 中增加对 PAM的指示， 增加的用于 指示 PAM的信息元如下表 2所示：
MTC PAM capability ( octet 7, bit 5 )
0: MTC PAM not supported
1 : MTC PAM supported
表 2
在现有的 "UE network capability" 扩展 8进制表示的第 7个数位， 该 数位的第 5个 bit来进行 PAM标识，该 bit设置为 1表示当前需要发送 PAM 消息， 该 bit设置为 0表示当前不发送 PAM。
需要说明的是， 上述为实现对 PAM标识的几种实施方式， 但是并不局 限于在上述两个位置进行标识， 尤其是表 2所示标识方式中不仅局限于本 实施例中指定的具体数位和 bit位。
MME在接收到 MTC设备的附着请求消息后， 根据附着请求消息中的 信息对其进行安全认证， 通过安全认证以后， MME根据从 HSS获得的签 约信息判断该 MTC设备的 PAM特性是否激活状态， 然后从读取的附着请 求消息中查看是否有标识指示 MTC设备要发送 PAM消息。 如果满足上述 两个条件， 则优先给该 MTC设备分配资源， 和 /或选择服务网关， 和 /或选 择分组数据网络网关， 和 /或建立分组业务承载。 如果此时附着请求消息是 在 MTC设备的授权时间以外发送的 , 网络实体仍然接收和处理该请求； 如 果此时附着请求发送时， 网络负载超过指定门限， 网络实体仍然接收和处 理该请求。
本发明的实施例二，针对 MTC设备连接到网络， 但未建立分组业务承 载的情形。 MTC用户首先定义触发 PAM消息的条件， 例如： 当自动售货 机的货物售空时， 触发 PAM 消息的发送。 当处于空闲状态 （该状态下， MTC设备注册到网络，但是没有建立数据传输承载）的 MTC设备满足 PAM 触发条件时， MTC 设备发送连接请求消息或业务请求消息给网络实体 MME, 并在该连接请求消息或业务请求消息中携带 PAM标识， 该标识用 于指示当前 MTC设备将发送 PAM消息。 MTC设备发送到 MME的业务请 求消息的内容如下表 3所示：
Figure imgf000011_0001
表 3
MTC设备发送到 MME的连接请求消息的内容如下表 4所示:
Figure imgf000011_0002
表 4
其中， 新增的信息元 "PAM indication" 为可选的信息元， 长度为 1个 bit, 当该信息位设置值为 1时， 标识当前附着请求消息用于请求发送 PAM 消息； 当该信息位不存在或设置值为 0时， 表示当前没有发送 PAM消息的 需求。
MME在接收到 MTC设备的连接请求消息或业务请求消息后， 根据连 接请求消息或业务请求消息中的信息对其进行安全认证， 通过安全认证以 后， MME根据从 HSS获得的签约信息判断该 MTC设备的 PAM特性是否 激活状态， 然后从读取的连接请求消息或业务请求消息中查看是否有标识 指示 MTC设备要发送 PAM消息。如果满足上述两个条件，则优先给该 MTC 设备选择服务网关， 和 /或分组数据网络网关， 和 /或建立分组业务承载。
本发明的实施例三， 针对 MTC设备连接到网络， 也建立了分组业务承 载的情形。 MTC用户首先定义触发 PAM消息的条件， 例如： 当自动售货 机的货物售空时， 触发 PAM消息的发送。 当处于连接状态下的 MTC设备 需要发送 PAM消息时， MTC设备将该消息作为用户面数据发送， 即通过 基站作为中转， 发送到服务网关； 在 MTC设备发送到基站时， 通过空口无 线资源控制 （RRC , Radio Resource Control ) 协议或分组数据汇聚协议 ( PDCP, Packet Data Convergence Protocol )发送； 在基站发送到服务网关 通过 S1-U协议发送， S1-U协议是一个用于在基站和服务网关之间发送数 据的协议， 所有它们之间传输的数据都通过该协议进行封装。 那么， 对于 用户面协议对 PAM的标识必须在 S1-U协议数据包中增加， 在此基础上还 可以在 PDCP数据包和 /或 PAM消息数据中增加。
结合图 3所示的用户面数据结构， 可以在 PAM消息数据的首个 bit位 之前再增加一位 bit指示位， 当该 bit值为 1时， 表示该消息 7 载的是 PAM 消息， 当该 bit值为 0时， 标识该消息 7 载的不是 PAM消息； 或者， 可以 在该 Sl-U、 和 /或 RRC/PDCP协议包头中使用现有的空 bit位或增加 bit位 用于指示 PAM, 例如： 设置该 bit为 1时， 表示该消息是 PAM消息， 为 0 时， 表示该消息不是 PAM消息。 在服务网关接收到该消息后， 通过对包头或数据解码可以获知当前消 息是否为 PAM消息， 如果是， 则优先使用当前分组业务承载将该消息发送 到 MTC服务器。
对应上述处理 MTC 优先警报消息的方法， 本发明还提供了一种处理 MTC优先警报消息的系统， 包括 MTC设备和网络实体。其中 , MTC设备， 用于在发送给网络实体的消息中携带 PAM标识。 网络实体， 用于接收到来 自 MTC设备的消息后， 根据消息中 PAM标识的指示， 优先处理对应 MTC 设备的请求和数据发送。
MTC设备发送的消息为： 附着请求消息、 业务请求消息或消息数据； 相应的， PAM标识携带在附着请求消息、 连接请求消息、 业务请求消息或 消息数据中。
较佳的， 网络实体进一步用于， 在接收到来自 MTC设备的消息后， 消 息中携带 PAM标识，且 MTC设备的 PAM特性为激活状态， 则优先处理对 应 MTC设备的请求和数据发送。 优先处理对应 MTC设备的请求和数据发 送， 包括以下操作中的至少一种： 优先为 MTC设备选择服务网关和 /或分 组数据网络网关；优先为 MTC设备建立分组业务承载；优先发送来自 MTC 设备的消息数据； 当有除 PAM特性的其他特性同时激活时， 无论是否符合 其他特性的处理机制， 优先处理 PAM消息的收发。 还包括： 如果 PAM消 息发送的时间在授权发送时间之外， 仍然接收和处理该 PAM消息、 或发送 PAM消息的接入请求消息； 如果 PAM消息发送时， 网络负载超过预定门 限 , 仍然接收和处理该 PAM消息、 或发送 PAM消息的接入请求消息。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种处理机器类型通信（MTC )优先警报消息的方法， 其特征在于， 该方法包括：
MTC设备在发送给网络实体的消息中携带优先警报消息（ PAM )标识； 所述网络实体接收到来自 MTC设备的消息后， 根据所述消息中 PAM 标识的指示， 优先处理对应 MTC设备的请求和数据发送。
2、根据权利要求 1所述处理 MTC优先警报消息的方法， 其特征在于， 所述 MTC设备发送的消息为： 接入请求消息或消息数据；
相应的， 所述 PAM标识携带在所述接入请求消息或消息数据中。
3、根据权利要求 2所述处理 MTC优先警报消息的方法， 其特征在于， 所述接入请求消息为： 附着请求消息、 连接请求消息或业务请求消息。
4、根据权利要求 1所述处理 MTC优先警报消息的方法， 其特征在于， 该方法进一步包括： 所述网络实体在接收到来自 MTC设备的消息后， 如果 所述消息中携带 PAM标识，且所述 MTC设备的 PAM特性为激活状态， 则 所述网络实体优先处理对应 MTC设备的请求和数据发送。
5、 根据权利要求 1、 2、 3或 4所述处理 MTC优先警报消息的方法， 其特征在于， 所述优先处理对应 MTC设备的请求和数据发送， 包括以下操 作中的至少一种： 优先为所述 MTC设备选择服务网关和 /或分组数据网络 网关； 优先为所述 MTC设备建立分组业务承载； 优先发送来自所述 MTC 设备的消息数据； 当有除 PAM特性的其他特性同时激活时， 无论是否符合 其他特性的处理机制， 优先处理 PAM消息的收发。
6、根据权利要求 5所述处理 MTC优先警报消息的方法， 其特征在于， 所述当有除 PAM特性的其他特性同时激活时， 无论是否符合其他特性的处 理机制， 优先处理 PAM消息的收发， 具体包括：
如果 PAM消息发送的时间在授权发送时间之外， 仍然接收和处理所述 PAM消息、 或发送 PAM消息的接入请求消息； 或者，
如果 PAM消息发送时， 网络负载超过预定门限， 仍然接收和处理所述 PAM消息、 或发送 PAM消息的接入请求消息。
7、 一种处理 MTC优先警报消息的系统， 其特征在于， 该系统包括： MTC设备和网络实体， 其中，
所述 MTC设备， 用于在发送给网络实体的消息中携带 PAM标识； 所述网络实体， 用于接收到来自 MTC设备的消息后， 根据所述消息中 PAM标识的指示， 优先处理对应 MTC设备的请求和数据发送。
8、根据权利要求 7所述处理 MTC优先警报消息的系统， 其特征在于， 所述 MTC设备发送的消息为： 接入请求消息或消息数据；
相应的， 所述 PAM标识携带在所述接入请求消息或消息数据中。
9、根据权利要求 8所述处理 MTC优先警报消息的系统， 其特征在于， 所述接入请求消息为： 附着请求消息、 连接请求消息或业务请求消息。
10、根据权利要求 7所述处理 MTC优先警报消息的系统，其特征在于， 所述网络实体进一步用于， 在接收到来自 MTC设备的消息后， 所述消息中 携带 PAM标识，且所述 MTC设备的 PAM特性为激活状态， 则优先处理对 应 MTC设备的请求和数据发送。
11、 根据权利要求 7、 8、 9或 10所述处理 MTC优先警报消息的系统， 其特征在于， 所述网络实体进一步用于， 优先为所述 MTC设备选择服务网 关和 /或分组数据网络网关； 优先为所述 MTC设备建立分组业务承载； 优 先发送来自所述 MTC设备的消息数据； 当有除 PAM特性的其他特性同时 激活时， 无论是否符合其他特性的处理机制， 优先处理 PAM消息的收发。
12、 根据权利要求 11所述处理 MTC优先警报消息的系统， 其特征在 于， 所述网络实体进一步用于，
在 PAM消息发送的时间在授权发送时间之外时， 仍然接收和处理所述 PAM消息、 或发送 PAM消息的接入请求消息； 或者，
在 PAM 消息发送时， 网络负载超过预定门限， 仍然接收和处理所述 PAM消息、 或发送 PAM消息的接入请求消息。
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