WO2012097706A1 - 一种承载修改的系统及方法 - Google Patents

一种承载修改的系统及方法 Download PDF

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Publication number
WO2012097706A1
WO2012097706A1 PCT/CN2012/070327 CN2012070327W WO2012097706A1 WO 2012097706 A1 WO2012097706 A1 WO 2012097706A1 CN 2012070327 W CN2012070327 W CN 2012070327W WO 2012097706 A1 WO2012097706 A1 WO 2012097706A1
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Prior art keywords
ambr
mme
apn
enodeb
newly set
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PCT/CN2012/070327
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English (en)
French (fr)
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汪钱纯
叶敏雅
丁燕菁
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中兴通讯股份有限公司
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Publication of WO2012097706A1 publication Critical patent/WO2012097706A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]

Definitions

  • the present invention relates to a packet domain and an evolved domain update technology in a mobile communication system, and more particularly to a bearer modification system and method. Background technique
  • SAE System Architecture Evolution
  • Evolved Radio Access Network can provide higher uplink and downlink rates, lower transmission delay and more reliable wireless transmission;
  • the network element included in E-RAN is an evolved base station (eNodeB, Evolved NodeB), providing radio resources for terminal access;
  • HSS Home Subscriber Server
  • Packet Data Network A network that provides services to users
  • E-Packet Core Provides lower latency and allows more wireless access systems to access, including the following Network element:
  • Mobility Management Entity A server that temporarily stores user data for a control plane function entity, responsible for managing and storing UE contexts, such as UE/user identity, mobility management status, user security parameters, etc. Assigning a temporary identifier, when the UE is camped on the tracking area or the network, is responsible for authenticating the UE; processing all non-access stratum messages between the MME and the UE; triggering paging in the SAE;
  • Serving GPRS Support Node GPRS that supports Gb or Iu access, a server that temporarily stores user data, and is responsible for managing and storing GMM. And the PDP context; processing all non-access stratum messages between the SGSN and the UE; Serving Gateway (S-GW): is a user plane entity, responsible for user plane data routing processing, terminating the UE in idle state Downstream data; management and storage of UE
  • the SAE bearer context such as the IP bearer service parameters and the internal routing information of the network, is the anchor point of the internal user plane of the 3GPP system.
  • One user can only have one S-GW at a time; the packet data network gateway (PDN GW) : responsible for the UE accessing the PDN gateway, assigning the user IP address, and being the mobility anchor of the 3GPP and non-3GPP access systems.
  • PDN GW packet data network gateway
  • PCRF Policy and Charging Rule Functionality
  • the above S-GW and PDN GW may be combined.
  • the EPS QoS parameters include bearer level QoS parameters and bearer set level QoS parameters;
  • the bearer level QoS parameters are as follows:
  • QoS Class Identifier is a scalar that is used to represent an access node, such as an eNodeB, to control specific parameters of bearer-level packet forwarding processing. It is pre-configured by the operator at the access node, that is, a QCI. Represents a set of QoS parameters;
  • the ARP (Allocation and Retention Priority) is used to determine whether to accept or reject the bearer establishment or modification request in the case of resource limitation.
  • the method includes: Priority Level, Pre-emption Capability and Pre-emption Vulnerability; Maximum Bit Rate (MBR): Guaranteed Bit Rate (GBR) The maximum bit rate provided; GBR: The guaranteed bit rate that the GBR bearer can provide.
  • MRR Maximum Bit Rate
  • GBR Guaranteed Bit Rate
  • the bearer aggregation level QoS parameters are as follows:
  • APN-AMBR Access Point Name-Aggregate Maximum Bit Rate
  • UE-Aggregate Maximum Bit Rate (UE-MB): The maximum rate corresponding to the set of all Non-GBR Bearers of the UE.
  • the MME takes the minimum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the set UE-AMBR, so if there is an activated APN-AMBR change, the set UE may be caused.
  • AMBR changes.
  • the UE establishes a default bearer by initiating an attach or PDN Connectivity procedure, or the PDN GW establishes a dedicated bearer by initiating a dedicated bearer setup procedure.
  • the PCRF Or the PDN GW may allocate a QoS or an APN-AMBR for the user bearer, and the subsequent PDN GW may initiate a QoS update of the bearer, or initiate a non-QoS update, such as updating the APN-AMBR.
  • the non-QoS update process initiated by the PDN GW includes the following steps:
  • Step 200 The PDN GW sends an update bearer request message to the S-GW, where the modified APN-AMBR is carried.
  • Step 201 The S-GW sends an update bearer request message to the MME, where the modified APN-AMBR is carried.
  • Step 202 After receiving the modified APN-AMBR, the MME takes the minimum value of the sum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the newly set UE-AMBR, and compares the newly set UE-AMBR with Whether the previously set UE-AMBR is consistent. If they are inconsistent, perform all the following steps. When they are consistent, after step 207 is completed, the process ends. Process;
  • Step 203 When the MME determines that the user is in the connected state, the MME constructs a downlink non-access stratum (NAS, Non Access Stratum) transmission message, and sends the downlink NAS transmission message to the eNodeB, where the downlink NAS transmission message carries the non-access stratum a Protocol Data Unit (NAS-PDU) message, the NAS-PDU message including a modified APN-AMBR;
  • NAS Non Access Stratum
  • NAS-PDU Protocol Data Unit
  • Step 204 The eNodeB receives the downlink NAS transmission message, and sends the modified APN-AMBR in the NAS-PDU message to the UE, and notifies the UE to complete the bearer modification process, that is, notifies the UE to complete the APN-AMBR modification.
  • Step 205 The eNodeB sends an uplink NAS transmission message to the MME, where the NAS-PDU message is included.
  • Step 206 The MME sends an update bearer response message to the S-GW.
  • Step 207 The S-GW sends an update bearer response message to the PDN GW.
  • Step 208 The MME sends a UE context modification request message to the eNodeB, where the newly set UE-AMBR is included.
  • Step 209 After modifying the UE-AMBR according to the newly set UE-AMBR, the eNodeB sends a UE context modification response message to the MME.
  • the MME During the non-QoS update process initiated by the PDN GW, the MME notifies the eNodeB to modify the UE-AMBR to pass the subsequent independent UE context modification process, which increases the probability of network signaling interaction and bearer modification failure.
  • the main object of the present invention is to provide a system and method for carrying modification, which reduces the probability of network signaling interaction and bearer modification failure when bearer modification.
  • the tamper-enabled system includes: an MME, an eNodeB;
  • the MME after receiving the modified APN-AMBR, takes the minimum of the sum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the newly set UE-AMBR; when the newly set UE-AMBR and the original When the set UE-AMBR is inconsistent, the newly set UE-AMBR is carried in the downlink NAS transmission message sent to the eNodeB;
  • the eNodeB is configured to modify its own UE-AMBR according to the newly set UE-AMBR in the downlink NAS transmission message.
  • the MME is further configured to carry a NAS-PDU message in the downlink NAS transmission message sent to the eNodeB, where the NAS-PDU message includes the modified APN-AMBR.
  • the eNodeB is further configured to notify the UE to complete the modification of the APN-AMBR according to the NAS-PDU message carried in the downlink NAS transmission message.
  • the system further includes: a PDN GW, an S-GW; wherein
  • a PDN GW configured to send an update bearer request message to the S-GW, where the update bearer request message carries the modified APN-AMBR;
  • the S-GW is configured to send an update bearer request message to the MME, where the update bearer request message carries the modified APN-AMBR.
  • the system further includes: an HSS, a PDN GW, and an S-GW; wherein
  • An HSS configured to send an insert user data request to the MME, where the inserted user data request carries the modified APN-AMBR;
  • the MME is further configured to send an insert user data response to the HSS, and send a modify bearer command to the S-GW, where the modify bearer command carries the modified APN-AMBR;
  • the S-GW is configured to: after receiving the modify bearer command of the MME, send a modify bearer command to the PDN GW, where the modified APN-AMBR is carried; after receiving the update bearer request message of the PDN GW, send an update bearer request to the MME. a message, the update bearer request message carries a modified APN-AMBR;
  • the PDN GW is configured to send an update bearer request to the S-GW after receiving the modify bearer command.
  • the message, the update bearer request message carries the modified APN-AMBR.
  • the invention provides a method for carrying modification, the method comprising:
  • the MME After receiving the modified APN-AMBR, the MME takes the minimum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the newly set UE-AMBR;
  • the MME carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB;
  • the eNodeB modifies its own UE-AMBR according to the newly set UE-AMBR in the downlink NAS transmission message.
  • the MME carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB, and is: preset an optional information element (IE, Information Element) in the downlink NAS transmission message for storing new The set UE-AMBR, the MME carries the newly set UE-AMBR through the IE in the downlink NAS transmission message sent to the eNodeB.
  • IE optional information element
  • the method further includes: the MME carrying the NAS-PDU message in the downlink NAS transmission message sent to the eNodeB, where the NAS-PDU message includes the modified APN-AMBR 0
  • the method further includes: the eNodeB notifying the UE to complete the APN-AMBR modification according to the NAS-PDU message carried in the downlink NAS transmission message.
  • the present invention provides a bearer modification system and method.
  • the MME After receiving the modified APN-AMBR, the MME takes the sum of the APN-AMBR of all activated APNs and the minimum value of the subscribed UE-AMBR as the newly set UE-AMBR.
  • the MME carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB; the eNodeB according to the newly set UE in the downlink NAS transmission message -
  • the AMBR modifies its own UE-AMBR. In this way, in the bearer modification process, the independent UE context modification process is not required, and the network signaling interaction and the bearer modification failure are reduced. The chance. DRAWINGS
  • FIG. 2 is a schematic flow chart of a non-QoS update process initiated by a PDN GW in a prior art
  • FIG. 3 is a schematic structural diagram of a system for implementing bearer modification according to the present invention.
  • FIG. 4 is a schematic flowchart of a method for implementing bearer modification according to the present invention.
  • FIG. 5 is a schematic flowchart of a method for implementing bearer modification according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a method for implementing bearer modification according to Embodiment 2 of the present invention. detailed description
  • the MME After receiving the modified APN-AMBR, the MME takes the minimum of the sum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the newly set UE-AMBR; when the newly set UE - When the AMBR is inconsistent with the originally set UE-AMBR, the MME carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB; the eNodeB modifies its own UE according to the newly set UE-AMBR in the downlink NAS transmission message. -AMBR.
  • the present invention implements a system with a modification, as shown in FIG. 3, the system includes: an MME 31, an eNodeB 32;
  • the MME 31 is configured to: after receiving the modified APN-AMBR, take the minimum value of the sum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the newly set UE-AMBR; when the newly set UE-AMBR and When the originally set UE-AMBR is inconsistent, the newly set UE-AMBR is carried in the downlink NAS transmission message sent to the eNodeB 32;
  • the eNodeB 32 is configured to: according to the newly set UE-AMBR in the downlink NAS transmission message Modify your own UE-AMBR.
  • the MME 31 is further configured to carry a NAS-PDU message in the downlink NAS transmission message sent to the eNodeB 32, where the NAS-PDU message carries the modified APN-AMBR.
  • the eNodeB 32 is further used according to the downlink NAS.
  • the transport message carries the NAS-PDU message, and the UE is notified to complete the tampering process, that is, the UE is notified to complete the modification of the APN-AMBR.
  • the system further includes: PDNGW33, S-GW34; wherein
  • the PDNGW33 is configured to send an update bearer request message to the S-GW 34, where the modified APN-AMBR is carried;
  • the S-GW 34 is configured to send an update bearer request message to the MME 31, where the modified APN-AMBR is carried;
  • system further includes: HSS35, PDNGW33, S-GW 34; wherein
  • the HSS 35 is configured to send an insert user data request to the MME 31, where the inserted user data request carries the modified APN-AMBR;
  • the MME 31 is further configured to send an insert user data response to the HSS 35, and send a modify bearer command to the S-GW 34, where the modified APN-AMBR is carried;
  • the S-GW 34 is configured to: after receiving the modify bearer command of the MME 31, send a modify bearer command to the PDNGW 33, where the modified APN-AMBR is carried; after receiving the update bearer request message of the PDN GW 33, send the message to the MME 31. Updating a bearer request message, where the modified APN-AMBR is carried;
  • the PDNGW 33 is configured to send an update bearer request message to the S-GW 34 after receiving the modify bearer command, where the modified APN-AMBR is carried.
  • the present invention also provides a method for carrying changes, as shown in FIG. 4, the method includes the following steps:
  • Step 401 After receiving the modified APN-AMBR, the MME takes all activated APNs. The sum of the APN-AMBR and the minimum value of the contracted UE-AMBR as the newly set UE-AMBR;
  • Step 402 When the newly set UE-AMBR is inconsistent with the originally set UE-AMBR, the downlink NAS transmission message sent to the eNodeB carries the newly set UE-AMBR;
  • an optional IE in the downlink NAS transmission message is preset to store the newly set UE-AMBR.
  • the MME sends the downlink NAS to the eNodeB.
  • the newly set UE-AMBR is carried in the transport message through the IE.
  • the step further includes: the MME carrying the NAS-PDU message in the downlink NAS transmission message sent to the eNodeB, where the NAS-PDU message carries the modified APN-AMBR.
  • Step 403 The eNodeB modifies its own UE-AMBR according to the newly set UE-AMBR in the downlink NAS transmission message.
  • the step further includes: the eNodeB notifying the UE to complete the tampering process according to the NAS-PDU message carried in the downlink NAS transmission message, that is, notifying the UE to complete the APN-AMBR modification.
  • Embodiment 1 the eNodeB notifying the UE to complete the tampering process according to the NAS-PDU message carried in the downlink NAS transmission message, that is, notifying the UE to complete the APN-AMBR modification.
  • the PDN GW initiates the non-QoS update of the bearer
  • the MME takes the minimum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed AMN as the newly set UE-AMBR according to the modified APN-AMBR;
  • the MME carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB; the eNodeB is based on the newly set UE in the downlink NAS transmission message.
  • the AMBR modifies the UE-AMBR.
  • the method for carrying the modification provided in this embodiment, as shown in FIG. 5, includes the following steps:
  • Step 500 The PDN GW sends an update bearer request message to the S-GW, where the bearer carries the modification.
  • APN-AMBR APN-AMBR
  • Step 501 The S-GW sends an update bearer request message to the MME, where the modified APN-AMBR is carried.
  • Step 502 After receiving the modified APN-AMBR carried in the update bearer request message, the MME takes the minimum of the APN-AMBR of all activated APNs and the contracted UE-AMBR as the newly set UE-AMBR;
  • Step 503 When the newly set UE-AMBR is inconsistent with the originally set UE-AMBR, and the user is in the connected state, the MME constructs a downlink NAS transmission message, and sends the downlink NAS transmission message to the eNodeB, where the downlink NAS transmission message is sent.
  • the NAS-PDU is carried in the message, and carries the newly set UE-AMBR, where the NAS-PDU message includes the modified APN-AMBR.
  • the UE-AMBR carrying the newly set is specifically: pre-set the downlink NAS transmission message.
  • An optional IE is used to store the newly set UE-AMBR, and the MME carries the newly set UE-AMBR through the IE in the downlink NAS transmission message sent to the eNodeB.
  • Step 504 After receiving the downlink NAS transmission message sent by the MME, the eNodeB sends the modified APN-AMBR in the NAS-PDU message to the UE, and notifies the UE to complete the bearer modification process, that is, notifies the UE to complete the APN-AMBR modification.
  • Step 505 The eNodeB modifies its own UE-AMBR according to the newly set UE-AMBR in the downlink NAS transmission message, and sends an uplink NAS transmission message to the MME, where the NAS-PDU message is carried.
  • Step 506 The MME sends an update bearer response message to the S-GW.
  • Step 507 The S-GW sends an update bearer response message to the PDN GW.
  • the HSS initiates a subscription QoS update
  • the MME takes the APN-AMBR sum of all activated APNs and the minimum value of the subscribed UE-AMBR as the newly set UE-AMBR according to the modified APN-AMBR; UE-AMBR is not set with the originally set UE-AMBR
  • the MME carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB; the eNodeB modifies the UE-AMBR according to the newly set UE-AMBR in the downlink NAS transmission message.
  • the method for carrying the modification provided in this embodiment, as shown in FIG. 6, includes the following steps:
  • Step 600 the HSS sends an insert user data request to the MME, and the inserted user data request carries the modified APN-AMBR;
  • Step 601 The MME sends an insert user data response to the HSS.
  • Step 602 The MME sends a modify bearer command to the S-GW, where the modify bearer command carries the modified APN-AMBR.
  • Step 603 After receiving the modify bearer command sent by the MME, the S-GW sends a modify bearer command to the PDN GW, where the modified APN-AMBR is carried.
  • Step 604 the PDN GW sends an update bearer request message to the S-GW, where the modified APN-AMBR is carried;
  • Step 605 The S-GW sends an update bearer request message to the MME, where the modified APN-AMBR is carried.
  • Step 606 After receiving the modified APN-AMBR carried in the update bearer request message, the MME takes the minimum of the APN-AMBR of all activated APNs and the UE-AMBR of the subscribed UE as the newly set UE-AMBR;
  • Step 607 When the newly set UE-AMBR is inconsistent with the originally set UE-AMBR, and the user is in the connected state, the MME constructs a downlink NAS transmission message, and sends the downlink NAS transmission message to the eNodeB, where the downlink NAS transmission message is sent.
  • the NAS-PDU message carries the newly-set UE-AMBR, and the NAS-PDU message includes the modified APN-AMBR.
  • Step 608 After receiving the downlink NAS transmission message sent by the MME, the eNodeB sends the NAS-PDU message.
  • the modified APN-AMBR is sent to the UE, and the UE is notified to complete the bearer modification process, that is, the UE is notified to complete the APN-AMBR modification.
  • Step 610 The MME sends an update bearer response message to the S-GW.
  • Step 611 The S-GW sends an update bearer response message to the PDN GW.
  • the MME directly carries the newly set UE-AMBR in the downlink NAS transmission message sent to the eNodeB, and does not need to pass the independent UE context modification process, thereby reducing network signaling interaction and bearer. The chances of modifying the failure.

Abstract

本发明公开了一种承载修改的系统,移动管理实体(MME)接收到修改的接入点名称-汇聚最大比特率(APN-AMBR)之后,取所有激活的APN的APN-AMBR之和与签约的用户设备-汇聚最大比特率(UE-AMBR)的最小值作为新设置的UE-AMBR;在新设置的UE-AMBR与原先设置的UE-AMBR不一致时,MME在向演进基站(eNodeB)发送的下行NAS传输消息中携带新设置的UE-AMBR;eNodeB根据所述下行NAS传输消息中新设置的UE-AMBR修改UE-AMBR;本发明同时公开了一种承载修改的方法,通过本发明的方案,在承载修改过程中,不需要通过独立的UE上下文修改过程,减少了网络信令交互和承载修改失败的几率。

Description

一种承载修改的系统及方法 技术领域
本发明涉及移动通讯系统中分组域和演进域的更新技术, 尤其涉及一 种承载修改的系统及方法。 背景技术
第三代合作伙伴计划 ( 3GPP, 3rd Generation Partnership Project )对下 一代移动无线网络的项目叫系统架构演进 ( SAE , System Architecture Evolution )0 SAE的架构如图 1所示, 其中包含了如下网元:
演进的无线接入网 (E-RAN, Evolved RAN ): 可以提供更高的上下行 速率, 更低的传输延迟和更加可靠的无线传输; E-RAN中包含的网元是演 进基站 (eNodeB, Evolved NodeB ), 为终端的接入提供无线资源;
归属用户服务器(HSS, Home Subscriber Server ): 永久存储用户签约 数据;
分组数据网 (PDN, Packet Data Network ): 为用户提供业务的网络; 演进的分组网 ( E-Packet Core ): 提供更低的延迟, 并允许更多的无线 接入系统接入, 包含了如下网元:
移动管理实体( MME , Mobility Management Entity ): 为控制面功能实 体, 临时存储用户数据的服务器, 负责管理和存储 UE上下文, 如 UE/用户 标识、 移动性管理状态、 用户安全参数等; 并为用户分配临时标识, 当 UE 驻扎在该跟踪区域或者该网络时, 负责对该 UE进行鉴权; 处理 MME和 UE之间的所有非接入层消息; 触发在 SAE的寻呼;
服务 GPRS支持节点 ( SGSN, Serving GPRS Support Node ): 支持 Gb 或 Iu接入的 GPRS,临时存储用户数据的服务器,负责管理和存储 GMM上 下文和 PDP上下文; 处理 SGSN和 UE之间的所有非接入层消息; 服务网关 (S-GW, Serving Gateway ): 是一个用户面实体, 负责用户 面数据路由处理, 终结处于空闲状态的 UE的下行数据; 管理和存储 UE的
SAE承载(bearer )上下文, 比如 IP承载业务参数和网络内部路由信息等, 是 3GPP系统内部用户面的锚点, 一个用户在一个时刻只能有一个 S-GW; 分组数据网网关( PDN GW ): 负责 UE接入 PDN的网关, 分配用户 IP 地址, 同时是 3GPP和非 3GPP接入系统的移动性锚点, 用户在同一时刻能 够接入多个 PDN GWo
策略和合计费规则功能实体 ( PCRF , Policy and Charging Rule Functionality ):主要根据业务信息和用户签约信息以及运营商的配置信息产 生控制用户数据传递的服务质量(Qos, Quality of Service )规则以及计费 规则, 也可以控制接入网中承载的建立和释放。
在物理上, 上述的 S-GW和 PDN GW可能合在一起。
在 SAE系统中, EPS QoS参数包括承载级 QoS参数和承载集合级 QoS 参数; 其中,
承载级 QoS参数如下:
QoS类标识(QCI, QoS Class Identifier ): 是一个标量, 用来代表接入 节点, 例如 eNodeB, 用于控制承载级别包转发处理的特定参数, 被运营商 预配置在接入节点, 即一个 QCI就代表一套 QoS参数;
分配保持优先级(ARP, Allocation and Retention Priority ), 用于在资源 限制的情况下决定接受还是拒绝承载的建立或者修改请求, 用于在特殊的 资源限制时, 决定丟弃哪个承载, 包含有: 优先级(Priority Level )、 抢占 能力标志( Pre-emption Capability )和被抢占能力 ( Pre-emption Vulnerability ); 最大比特率( MBR, Maximum Bit Rate ):保证比特率( GBR, Guaranteed Bit Rate )承载能够提供的最大比特率; GBR: GBR承载能够提供的保证比特率。
承载集合级 QoS参数如下:
接入点名称 -汇聚最大比特率 ( APN-AMBR , Access Point Name-Aggregate Maximum Bit Rate ): 一个 APN所^] "应的所有 PDN连接的 所有 Non-GBR Bearer的集合的最大速率;
用户设备-汇聚最大比特率 (UE-AMBR, UE-Aggregate Maximum Bit Rate ): UE的所有 Non-GBR Bearer的集合对应的最大速率。
在 SAE系统中 , MME取所有激活的 APN的 APN-AMBR之和与签约 的 UE-AMBR 的最小值作为设置的 UE-AMBR , 所以如果有激活的 APN-AMBR改变, 可能会使得设置的 UE-AMBR改变。
在 SAE 系统中, UE 通过发起附着 (attach ) 或 PDN 连接 ( PDN Connectivity )过程来建立默认承载, 或 PDN GW通过发起专有承载建立过 程为用户建立专有承载, 在上述承载建立的时候, PCRF或 PDN GW可以 为用户承载分配 QoS或 APN-AMBR, 后续 PDN GW可以发起承载的 QoS 更新, 或发起 载的非 QoS更新, 如更新 APN-AMBR。
PDN GW发起承载的非 QoS更新过程, 如图 2所示, 包括以下几个步 驟:
步驟 200, PDN GW向 S-GW发送更新承载请求消息, 其中携带修改 的 APN-AMBR;
步驟 201 , S-GW向 MME发送更新承载请求消息, 其中携带修改的 APN-AMBR;
步驟 202, MME接收到修改的 APN-AMBR之后, 取所有激活的 APN 的 APN-AMBR 之和与签约的 UE-AMBR 的最小值作为新设置的 UE-AMBR,并比较新设置的 UE-AMBR与原先设置的 UE-AMBR是否一致 , 在不一致时, 执行完下面所有步驟; 在一致时, 执行完步驟 207后, 结束 流程;
步驟 203 , MME 确定用户处于连接态时, MME 构造下行非接入层 ( NAS , Non Access Stratum )传输消息, 并发送所述下行 NAS传输消息给 eNodeB, 所述下行 NAS传输消息携带非接入层协议数据单元(NAS-PDU ) 消息 , 所述 NAS-PDU消息包含修改的 APN-AMBR;
步驟 204 , eNodeB接收到下行 NAS传输消息, 将 NAS-PDU消息中修 改的 APN-AMBR发送给 UE, 通知 UE完成承载修改过程, 即通知 UE完 成 APN-AMBR修改;
步驟 205 , eNodeB发送上行 NAS传输消息给 MME ,其中包含 NAS-PDU 消息;
步驟 206 , MME向 S-GW发送更新承载响应消息;
步驟 207 , S-GW向 PDN GW发送更新承载响应消息;
步驟 208, MME向 eNodeB发送 UE上下文修改请求消息, 其中包含 新设置的 UE-AMBR;
步驟 209 , eNodeB根据新设置的 UE-AMBR修改自身的 UE-AMBR后, 向 MME发送 UE上下文修改响应消息。
在上述 PDN GW发起承载的非 QoS更新过程中, MME通知 eNodeB 修改 UE-AMBR需要通过后续独立的 UE上下文修改过程, 这样增加了网 络信令交互和承载修改失败的几率。 发明内容
有鉴于此, 本发明的主要目的在于提供一种承载修改的系统及方法, 减少承载修改时的网络信令交互和承载修改失败的几率。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供的一种 载爹改的系统, 该系统包括: MME、 eNodeB; 其 中, MME, 用于接收到修改的 APN-AMBR之后, 取所有激活的 APN的 APN-AMBR之和与签约的 UE-AMBR的最小值作为新设置的 UE-AMBR; 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时, 在向 eNodeB 发送的下行 NAS传输消息中携带新设置的 UE-AMBR;
eNodeB ,用于根据所述下行 NAS传输消息中新设置的 UE-AMBR修改 自身的 UE-AMBR。
上述方案中, 所述 MME, 还用于在向 eNodeB发送的下行 NAS传输 消息中携带 NAS-PDU消息,所述 NAS-PDU消息包含修改的 APN-AMBR。
上述方案中, 所述 eNodeB , 还用于根据下行 NAS传输消息中携带的 NAS-PDU消息 , 通知 UE完成 APN-AMBR的修改。
上述方案中, 该系统还包括: PDN GW、 S-GW; 其中,
PDN GW, 用于向 S-GW发送更新承载请求消息, 所述更新承载请求 消息携带修改的 APN-AMBR;
S-GW, 用于向 MME发送更新承载请求消息, 所述更新承载请求消息 携带修改的 APN-AMBR。
上述方案中, 该系统还包括: HSS、 PDN GW, S-GW; 其中,
HSS, 用于向 MME发送插入用户数据请求, 所述插入用户数据请求携 带修改的 APN-AMBR;
相应的,所述 MME,还用于向 HSS发送插入用户数据应答,并向 S-GW 发送修改承载命令, 所述修改承载命令携带修改的 APN-AMBR;
S-GW,用于在接收到 MME的修改承载命令后, 向 PDN GW发送修改 承载命令, 其中携带修改的 APN-AMBR; 在接收到 PDN GW的更新承载 请求消息后,向 MME发送更新承载请求消息,所述更新承载请求消息携带 修改的 APN-AMBR;
PDN GW, 用于在接收修改承载命令后, 向 S-GW发送更新承载请求 消息, 所述更新承载请求消息携带修改的 APN-AMBR。
本发明提供的一种承载修改的方法, 该方法包括:
MME 接收到修改的 APN-AMBR 之后, 取所有激活的 APN 的 APN-AMBR之和与签约的 UE-AMBR的最小值作为新设置的 UE-AMBR;
当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时, MME在向 eNodeB发送的下行 NAS传输消息中携带新设置的 UE-AMBR;
eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR修改自身 的 UE-AMBR。
上述方案中, 所述 MME在向 eNodeB发送的下行 NAS传输消息中携 带新设置的 UE-AMBR, 为: 预先设置下行 NAS传输消息中的一个可选信 息元素(IE, Information Element )用于存放新设置的 UE-AMBR, MME在 向 eNodeB 发送的下行 NAS 传输消息中通过所述 IE 携带新设置的 UE-AMBR。
上述方案中, 该方法还包括: MME在向 eNodeB发送的下行 NAS传 输消息中携带 NAS-PDU 消息, 所述 NAS-PDU 消息包含修改的 APN-AMBR0
上述方案中, 该方法还包括: eNodeB根据下行 NAS传输消息中携带 的 NAS-PDU消息 , 通知 UE完成 APN-AMBR修改。
本发明提供了一种承载修改的系统及方法, MME 接收到修改的 APN-AMBR之后, 取所有激活的 APN 的 APN-AMBR之和与签约的 UE-AMBR的最小值作为新设置的 UE-AMBR;在新设置的 UE-AMBR与原 先设置的 UE-AMBR不一致时, MME在向 eNodeB发送的下行 NAS传输 消息中携带新设置的 UE-AMBR; eNodeB根据所述下行 NAS传输消息中新 设置的 UE-AMBR修改自身的 UE-AMBR; 如此, 在承载修改过程中, 不 需要通过独立的 UE上下文修改过程,减少了网络信令交互和承载修改失败 的几率。 附图说明
图 1为现有技术中 SAE的架构示意图;
图 2为现有技术中 PDN GW发起承载的非 QoS更新过程的流程示意 图;
图 3为本发明实现一种承载修改的系统的结构示意图;
图 4为本发明实现一种承载修改的方法的流程示意图;
图 5为本发明实施例一实现承载修改的方法的流程示意图;
图 6为本发明实施例二实现承载修改的方法的流程示意图。 具体实施方式
本发明的基本思想是: MME接收到修改的 APN-AMBR之后, 取所有 激活的 APN的 APN-AMBR之和与签约的 UE-AMBR的最小值作为新设置 的 UE-AMBR; 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时 , MME在向 eNodeB发送的下行 NAS传输消息中携带新设置的 UE-AMBR; eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR修改自身的 UE-AMBR。
下面通过附图及具体实施例对本发明做进一步的详细说明。
本发明实现一种 载修改的系统,如图 3所示,该系统包括: MME 31、 eNodeB 32; 其中,
MME 31 , 用于接收到修改的 APN-AMBR之后, 取所有激活的 APN 的 APN-AMBR 之和与签约的 UE-AMBR 的最小值作为新设置的 UE-AMBR; 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时,在 向 eNodeB 32发送的下行 NAS传输消息中携带新设置的 UE-AMBR;
eNodeB 32 , 用于根据所述下行 NAS传输消息中新设置的 UE-AMBR 修改自身的 UE-AMBR。
所述 MME31, 进一步用于在向 eNodeB32发送的下行 NAS传输消息 中携带 NAS-PDU消息, 所述 NAS-PDU消息携带修改的 APN-AMBR; 相应的, 所述 eNodeB 32, 进一步用于根据下行 NAS传输消息中携带 NAS-PDU消息,通知 UE完成 载爹改过程, 即通知 UE完成 APN-AMBR 的修改;
该系统进一步包括: PDNGW33、 S-GW34; 其中,
PDNGW33, 用于向 S-GW 34发送更新承载请求消息, 其中携带修改 的 APN-AMBR;
S-GW 34, 用于向 MME 31发送更新承载请求消息, 其中携带修改的 APN-AMBR;
或者, 该系统进一步包括: HSS35、 PDNGW33, S-GW 34; 其中,
HSS 35, 用于向 MME 31发送插入用户数据请求, 所述插入用户数据 请求携带修改的 APN-AMBR;
所述 MME 31, 进一步用于向 HSS 35发送插入用户数据应答, 并向 S-GW 34发送修改承载命令, 其中携带修改的 APN-AMBR;
S-GW 34, 用于在接收到 MME 31的修改承载命令后, 向 PDNGW33 发送修改承载命令, 其中携带修改的 APN-AMBR; 在接收到 PDN GW 33 的更新承载请求消息后, 向 MME 31发送更新承载请求消息, 其中携带修 改的 APN-AMBR;
PDNGW33, 用于在接收修改承载命令后, 向 S-GW34发送更新承载 请求消息, 其中携带修改的 APN-AMBR。
基于上述系统, 本发明还提供了一种承载修改的方法, 如图 4所示, 该方法包括以下几个步驟:
步驟 401 , MME接收到修改的 APN-AMBR之后, 取所有激活的 APN 的 APN-AMBR 之和与签约的 UE-AMBR 的最小值作为新设置的 UE-AMBR;
步驟 402 , 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时, 在向 eNodeB发送的下行 NAS传输消息中携带新设置的 UE-AMBR;
具体的, 预先设置下行 NAS传输消息中的一个可选 IE用于存放新设 置的 UE-AMBR, 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致 时, MME在向 eNodeB发送的下行 NAS传输消息中通过所述 IE携带新设 置的 UE-AMBR。
本步驟进一步包括: MME在向 eNodeB发送的下行 NAS传输消息中 携带 NAS-PDU消息, 所述 NAS-PDU消息携带修改的 APN-AMBR。
步驟 403 , eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR 修改自身的 UE-AMBR;
本步驟进一步包括: eNodeB 根据下行 NAS 传输消息中携带的 NAS-PDU消息,通知 UE完成 载爹改过程, 即通知 UE完成 APN-AMBR 修改。 实施例一
本实施例中, PDN GW发起承载的非 QoS 更新, MME根据修改的 APN-AMBR, 取所有激活的 APN的 APN-AMBR之和与签约的 UE-AMBR 的最小值作为新设置的 UE-AMBR; 在新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时, MME在向 eNodeB发送的下行 NAS传输消息中携带 新设置的 UE-AMBR; eNodeB 根据所述下行 NAS 传输消息中新设置的 UE-AMBR修改 UE-AMBR。本实施例提供的承载修改的方法,如图 5所示, 包括以下几个步驟:
步驟 500, PDN GW向 S-GW发送更新承载请求消息, 其中携带修改 的 APN-AMBR;
步驟 501 , S-GW向 MME发送更新承载请求消息, 其中携带修改的 APN-AMBR;
步驟 502, MME收到更新承载请求消息携带的修改的 APN-AMBR之 后 , 取所有激活的 APN的 APN-AMBR之和与签约的 UE-AMBR的最小值 作为新设置的 UE-AMBR;
步驟 503 , 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致、 且用户处于连接态时, MME构造下行 NAS传输消息, 并向 eNodeB发送 所述下行 NAS传输消息, 所述下行 NAS传输消息中携带 NAS-PDU消息 , 并携带新设置的 UE-AMBR,所述 NAS-PDU消息包含修改的 APN-AMBR; 这里, 所述携带新设置的 UE-AMBR, 具体为: 预先设置下行 NAS传 输消息中的一个可选 IE用于存放新设置的 UE-AMBR, MME在向 eNodeB 发送的下行 NAS传输消息中通过所述 IE携带新设置的 UE-AMBR。
步驟 504, eNodeB接收到 MME 下发的下行 NAS传输消息后, 将 NAS-PDU消息中修改的 APN-AMBR发送给 UE,通知 UE完成承载修改过 程, 即通知 UE完成 APN-AMBR修改;
步驟 505 , eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR 修改自身的 UE-AMBR, 并发送上行 NAS传输消息给 MME, 其中携带 NAS-PDU消息;
步驟 506 , MME向 S-GW发送更新承载响应消息;
步驟 507 , S-GW向 PDN GW发送更新承载响应消息。
实施例二
本实施例中 , HSS发起签约 QoS更新, MME根据修改的 APN-AMBR, 取所有激活的 APN的 APN-AMBR之和与签约的 UE-AMBR的最小值作为 新设置的 UE-AMBR; 在新设置的 UE-AMBR与原先设置的 UE-AMBR不 一致时, MME在向 eNodeB发送的下行 NAS传输消息中携带新设置的 UE-AMBR; eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR修 改 UE-AMBR。 本实施例提供的承载修改的方法, 如图 6所示, 包括以下几 个步驟:
步驟 600, HSS发送插入用户数据请求给 MME, 所述插入用户数据请 求携带修改的 APN-AMBR;
步驟 601 , MME向 HSS发送插入用户数据应答;
步驟 602, MME向 S-GW发送修改承载命令, 所述修改承载命令携带 修改的 APN-AMBR;
步驟 603 , S-GW接收 MME发送的修改承载命令后, 向 PDN GW发送 修改承载命令, 其中携带修改的 APN-AMBR;
步驟 604, PDN GW向 S-GW发送更新承载请求消息, 其中携带修改 的 APN-AMBR;
步驟 605, S-GW向 MME发送更新承载请求消息, 其中携带修改的 APN-AMBR;
步驟 606 , MME收到更新承载请求消息携带的修改的 APN-AMBR之 后 , 取所有激活的 APN的 APN-AMBR之和与签约的 UE-AMBR的最小值 作为新设置的 UE-AMBR;
步驟 607 , 当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致、 且用户处于连接态时, MME构造下行 NAS传输消息, 并向 eNodeB发送 所述下行 NAS传输消息, 所述下行 NAS传输消息中携带 NAS-PDU消息 , 携带新设置的 UE-AMBR, 所述 NAS-PDU消息包含修改的 APN-AMBR; 步驟 608, eNodeB接收到 MME 下发的下行 NAS传输消息后, 将 NAS-PDU消息中修改的 APN-AMBR发送给 UE,通知 UE完成承载修改过 程, 即通知 UE完成 APN-AMBR修改; 步驟 609, eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR 修改自身的 UE-AMBR, 并发送上行 NAS 传输消息给 MME, 其中携带 NAS-PDU消息;
步驟 610, MME向 S-GW发送更新承载响应消息;
步驟 611 , S-GW向 PDN GW发送更新承载响应消息。
通过本发明的方法, 在承载修改过程中, MME直接在发送给 eNodeB 的下行 NAS传输消息中携带新设置的 UE-AMBR, 不需要通过独立的 UE 上下文修改过程, 减少了网络信令交互和承载修改失败的几率。
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, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种承载修改的系统, 其特征在于, 该系统包括: 移动管理实体 ( MME )、 演进基站(eNodeB ); 其中,
MME, 用于接收到修改的接入点名称-汇聚最大比特率( APN-AMBR ) 之后, 取所有激活的接入点名称(APN )的 APN-AMBR之和与签约的用户 设备-汇聚最大比特率(UE-AMBR )的最小值作为新设置的 UE-AMBR; 当 新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时, 在向 eNodeB发 送的下行非接入层(NAS )传输消息中携带新设置的 UE-AMBR;
eNodeB ,用于根据所述下行 NAS传输消息中新设置的 UE-AMBR修改 自身的 UE-AMBR。
2、 根据权利要求 1所述的系统, 其特征在于, 所述 MME, 还用于在 向 eNodeB 发送的下行 NAS 传输消息中携带非接入层协议数据单元
( NAS-PDU ) 消息 , 所述 NAS-PDU消息包含修改的 APN-AMBR。
3、 根据权利要求 2所述的系统, 其特征在于, 所述 eNodeB, 还用于 根据下行 NAS传输消息中携带的 NAS-PDU消息,通知 UE完成 APN-AMBR 的修改。
4、 根据权利要求 1至 3任一项所述的系统, 其特征在于, 该系统还包 括: 分组数据网网关 (PDN GW )、 服务网关 (S-GW ); 其中,
PDN GW, 用于向 S-GW发送更新承载请求消息, 所述更新承载请求 消息携带修改的 APN-AMBR;
S-GW, 用于向 MME发送更新承载请求消息, 所述更新承载请求消息 携带修改的 APN-AMBR。
5、 根据权利要求 1至 3任一项所述的系统, 其特征在于, 该系统还包 括: 归属用户服务器(HSS )、 PDN GW, S-GW; 其中,
HSS, 用于向 MME发送插入用户数据请求, 所述插入用户数据请求携 带修改的 APN-AMBR;
相应的,所述 MME,还用于向 HSS发送插入用户数据应答,并向 S-GW 发送修改承载命令, 所述修改承载命令携带修改的 APN-AMBR;
S-GW,用于在接收到 MME的修改承载命令后, 向 PDN GW发送修改 承载命令, 其中携带修改的 APN-AMBR; 在接收到 PDN GW的更新承载 请求消息后,向 MME发送更新承载请求消息,所述更新承载请求消息携带 修改的 APN-AMBR;
PDN GW, 用于在接收修改承载命令后, 向 S-GW发送更新承载请求 消息, 所述更新承载请求消息携带修改的 APN-AMBR。
6、 一种承载修改的方法, 其特征在于, 该方法包括:
MME 接收到修改的 APN-AMBR 之后, 取所有激活的 APN 的 APN-AMBR之和与签约的 UE-AMBR的最小值作为新设置的 UE-AMBR;
当新设置的 UE-AMBR与原先设置的 UE-AMBR不一致时, MME在向 eNodeB发送的下行 NAS传输消息中携带新设置的 UE-AMBR;
eNodeB根据所述下行 NAS传输消息中新设置的 UE-AMBR修改自身 的 UE-AMBR。
7、根据权利要求 6所述的方法, 其特征在于, 所述 MME在向 eNodeB 发送的下行 NAS传输消息中携带新设置的 UE-AMBR, 为: 预先设置下行 NAS传输消息中的一个可选信息元素( IE )用于存放新设置的 UE-AMBR, MME在向 eNodeB发送的下行 NAS传输消息中通过所述 IE携带新设置的 UE-AMBR。
8、 根据权利要求 6 所述的方法, 其特征在于, 该方法还包括: MME 在向 eNodeB 发送的下行 NAS 传输消息中携带 NAS-PDU 消息, 所述 NAS-PDU消息包含爹改的 APN-AMBR。
9、 根据权利要求 8所述的方法, 其特征在于, 该方法还包括: eNodeB 根据下行 NAS传输消息中携带的 NAS-PDU消息,通知 UE完成 APN-AMBR 修改。
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