WO2011150615A1 - 一种承载资源分配方法及装置 - Google Patents

一种承载资源分配方法及装置 Download PDF

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Publication number
WO2011150615A1
WO2011150615A1 PCT/CN2010/077687 CN2010077687W WO2011150615A1 WO 2011150615 A1 WO2011150615 A1 WO 2011150615A1 CN 2010077687 W CN2010077687 W CN 2010077687W WO 2011150615 A1 WO2011150615 A1 WO 2011150615A1
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Prior art keywords
bearer
eps
resource allocation
allocation request
qci
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PCT/CN2010/077687
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English (en)
French (fr)
Inventor
郭婧
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP10852410.9A priority Critical patent/EP2552166A4/en
Priority to JP2013506446A priority patent/JP5507004B2/ja
Priority to US13/643,179 priority patent/US9119183B2/en
Publication of WO2011150615A1 publication Critical patent/WO2011150615A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a bearer resource allocation process in an LTE (Long Term Evolution) system in the field of communications, and more particularly to a method and apparatus for allocating bearer resource allocation.
  • LTE Long Term Evolution
  • EPS 3rd Generation Partnership Projection evolved Evolved Packet System
  • EUTRAN Evolved UMTS Terrestrial Radio Access Network
  • EPC Evolved Packet Core
  • the EPS core network is composed of an MME (Mobility Management Entity), a Serving GW (Service Gateway), and a PDN GW (Packet Data Network GW), which is mainly responsible for mobility management and non-access stratum. Signaling (Non-Access-Stratum) processing, and EPS bearer resource control and other related work.
  • MME Mobility Management Entity
  • Serving GW Service Gateway
  • PDN GW Packet Data Network GW
  • the EPS bearer is a logical aggregate of one or more service data flows.
  • the EPS bearer is located between the UE and the PDN GW.
  • the service is obtained by the process of allocating the bearer resources.
  • the required bearer resources the EPC allocates a current match to the UE according to the bearer-level QoS parameters (Quality of Service) and the Traffic Flow Template (TFT) carried in the request message sent by the UE in the process.
  • the bearer resource of the service is a logical aggregate of one or more service data flows.
  • the EPS bearer is located between the UE and the PDN GW.
  • the EPC allocates a current match to the UE according to the bearer-level QoS parameters (Quality of Service) and the Traffic Flow Template (TFT) carried in the request message sent by the UE in the process.
  • TFT Traffic Flow Template
  • the UE initiates a bearer resource allocation process to the EPC, which may trigger the EPC to initiate a process of activating a dedicated bearer or modifying a proprietary bearer to the UE.
  • a bearer resource allocation process to the EPC, which may trigger the EPC to initiate a process of activating a dedicated bearer or modifying a proprietary bearer to the UE.
  • Solution 1 Only the activation of the dedicated bearer process is triggered, and the bearer resource allocation request of the current UE is rejected once the bearer upper limit is reached;
  • Scenario 2 The EPC first searches for the bearer context associated with the UE. If there is a QCI (QoS Class Identifier) carried in the bearer resource allocation request message sent by the UE, Identifying a consistent bearer initiates modification of the proprietary bearer process; if not, initiates activation of the proprietary bearer process.
  • QCI QoS Class Identifier
  • Solution 1 The most likely waste of resources. Once the bearer is established, whether or not there is data transmission, the bearer will always be occupied. When the number of bearers reaches the upper limit, the initiation of new services will no longer be accepted, thus reducing the utilization of system resources. Rate
  • Solution 2 Each time the EPC receives the bearer resource allocation request, it first searches for the bearer context, which undoubtedly improves the processing delay of the system itself and reduces the response speed of the system to the service.
  • the present invention provides a method and an apparatus for allocating bearer resources to achieve reasonable allocation of bearer resources.
  • a bearer resource allocation method which includes: when a network side receives a user-initiated bearer resource allocation request, if the number of currently activated 3GPP evolved packet system (EPS) has been reached Or, if the upper limit is exceeded, the network side searches for the EPS bearer from the currently activated EPS bearer according to the quality of service class identifier (QCI) carried in the bearer resource allocation request, and if the QCI corresponding to the EPS bearer is found, And the same as the QCI carried in the bearer resource allocation request, performing a dedicated bearer modification operation on the found EPS bearer in response to the bearer resource allocation request.
  • QCI quality of service class identifier
  • the method may further include: the network side pre-storing the EPS bearer information corresponding to the currently activated EPS bearers, where the EPS bearer information includes the bearer identifier, the QCI, and the current bearer status corresponding to the currently activated EPS bearer.
  • the method may further include: after the network side finds that the QCI corresponding to the EPS bearer is the same as the QCI carried in the bearer resource allocation request, determining whether the current bearer status of the found EPS bearer is idle, and if yes, Performing a dedicated bearer modification operation on the found EPS bearer in response to the bearer resource allocation request.
  • the method may further include: if the network side does not find that the QCI corresponding to the EPS bearer is the same as the QCI carried in the bearer resource allocation request, the current bearer status is found to be idle according to the EPS bearer information corresponding to all currently activated EPS bearers.
  • the EPS bearer of the state and performs a dedicated bearer modification operation on the found EPS bearer in response to the bearer resource allocation request.
  • the EPS bearer information may further include a priority corresponding to the currently activated EPS bearer.
  • the method may further include: if the network side does not find that the QCI corresponding to the EPS bearer is the same as the QCI carried in the bearer resource allocation request, The priority of the bearer corresponding to the bearer that is requested by the bearer resource allocation request is searched for the EPS bearer. If the priority of the bearer corresponding to the bearer resource allocation request is lower than the priority of the bearer requested by the bearer resource allocation request, the found EPS is found. The bearer performs a dedicated bearer modification operation in response to the bearer resource allocation request.
  • the network side After the network side finds that the priority of the EPS bearer is lower than the priority of the bearer that is requested by the bearer resource allocation request, the network side can also obtain the found information from the EPS bearer information corresponding to all the currently activated EPS bearers.
  • the current bearer status corresponding to the EPS bearer is only performed when the acquired current bearer state is in the idle state, and the dedicated bearer modification operation is performed on the found EPS bearer in response to the bearer resource allocation request.
  • the network side can also update and save the EPS bearer information corresponding to all currently activated EPS bearers according to the operation result.
  • the invention also discloses a bearer resource allocation device, comprising a bearer allocation unit and a receiving unit, wherein:
  • the receiving unit is configured to receive a user-initiated bearer resource allocation request and forward the request to the bearer allocation unit.
  • the bearer allocation unit is configured to: when receiving the bearer resource allocation request, determine the currently activated 3GPP evolved packet. Whether the number of the system (EPS) bearers has reached or exceeded the set upper limit. If the number of currently activated EPS bearers has reached or exceeded the set upper limit, the service quality category identifier carried in the bearer resource allocation request is (QCI) searching for an EPS bearer from the currently activated EPS bearer. If it is found that the QCI corresponding to the EPS bearer is the same as the QCI carried in the bearer resource allocation request, the EPS bearer performs a dedicated bearer modification operation. In response to the bearer resource allocation request.
  • EPS system
  • the device may further include a bearer information storage unit; the bearer information storage unit may be configured to save the EPS bearer information corresponding to all currently activated EPS bearers, where the EPS bearer information includes a bearer identifier corresponding to the currently activated EPS bearer, The QCI and the current bearer status; the bearer allocation unit may be configured to look up the EPS bearer in the bearer information storage unit according to the QCI carried in the bearer resource allocation request.
  • the bearer allocation unit may be further configured to: after finding that the QCI corresponding to the EPS bearer is the same as the QCI carried in the bearer resource allocation request, obtain the checked from the bearer information storage unit.
  • the current bearer status of the found EPS bearer is only performed when the acquired current bearer status is in the idle state, and the dedicated bearer modification operation is performed on the found EPS bearer in response to the bearer resource allocation request.
  • the bearer allocation unit may be further configured to: if the QCI corresponding to the EPS bearer is not found to be the same as the QCI carried in the bearer resource allocation request, the bearer information storage unit searches for the EPS bearer whose current bearer state is idle, and Performing a dedicated bearer modification operation on the found EPS bearer in response to the bearer resource allocation request.
  • the bearer information storage unit may be further configured to save the priority corresponding to the activated EPS bearer; the bearer allocation unit may be further configured to: if the QCI corresponding to the EPS bearer is not found to be the same as the QCI carried in the bearer resource allocation request, And searching for the EPS bearer in the bearer information storage unit according to the priority corresponding to the bearer that is requested by the bearer resource allocation request. If the priority corresponding to the bearer that is requested by the bearer resource allocation request is lower than the priority of the bearer requested by the bearer resource allocation request, The found EPS bearer performs a dedicated bearer modification operation in response to the bearer resource allocation request.
  • the bearer allocation unit may obtain the current corresponding to the found EPS bearer from the bearer information storage unit.
  • the bearer status only when the obtained current bearer status is idle, performs a dedicated bearer modification operation on the found EPS bearer in response to the bearer resource allocation request.
  • the bearer allocation unit may be further configured to: after performing the dedicated bearer modification operation, update and save the EPS bearer information corresponding to all currently activated EPS bearers saved in the bearer information storage unit according to the operation result.
  • the technical solution provided by the embodiment of the present invention can effectively reduce EPC bearer resource waste, reduce delay, improve system utilization efficiency, and realize reasonable allocation of bearer resources.
  • FIG. 1 is a schematic diagram of a bearer resource allocation apparatus provided by the present invention
  • Figure 2 (a) is a flow chart of the resource allocation of the device shown in Figure 1;
  • Figure 2 (b) is a flow chart of the operation of step 201 in Figure 2 (a);
  • Embodiment 3 is a schematic diagram of a specific process of Embodiment 1;
  • the main idea of the present invention is that the policy of the EPS bearer resource allocation in the bearer resource allocation process can be implemented in a multi-dimensional manner in combination with the number of currently activated 3GPP evolved packet system (EPS) bearers, the QCL priority, and the current bearer state.
  • EPS 3GPP evolved packet system
  • the dedicated bearer process may be triggered. If the number of currently activated EPS bearers reaches or exceeds the set upper limit, the QCI and/or priority of the requested bearer may be further determined. The level, and any information in the QCI, priority, and current bearer status of the currently activated EPS bearer, determines the policy.
  • the current activated EPS bearer may be found to have the QCI carried in the corresponding QCI and bearer resource allocation request message of the EPS bearer. Then, the modified bearer process is initiated to modify the found EPS bearer.
  • the current bearer status of the found EPS bearer may be further determined to be in the idle state, and then the modification is initiated. There is a hosting process.
  • a bearer resource allocation device includes: an obtaining unit 101, a bearer information storage unit 102, a bearer allocating unit 103, a receiving unit 104, and a sending unit 105.
  • the obtaining unit 101 is configured to acquire the bearer context, the current bearer state, and the priority of the attached UE, and send the information to the bearer information storage unit.
  • the bearer information storage unit 102 is configured to: save the EPS bearer information of all EPS bearers that have been activated according to the information sent by the acquiring unit, where the EPS bearer information includes the bearer identifier (ID) corresponding to the activated EPS bearer, and the QCL priority. And current bearer status;
  • the bearer information storage unit may save the EPS bearer information of all currently activated EPS bearers by establishing an EPS bearer information table.
  • the EPS bearer information table includes the activated bearer ID, the QCL priority, and in particular the current Bearer status.
  • the bearer allocation unit 103 is configured to: according to the bearer information in the bearer information storage unit (such as the number of bearers, QCI, when the UE initiates the bearer resource allocation process (ie, receives the bearer resource allocation request) Determining the bearer resource allocation policy, and updating all the EPS bearers activated in the bearer information storage unit and their corresponding EPS bearer information according to the execution result of the allocation policy;
  • the bearer information in the bearer information storage unit such as the number of bearers, QCI, when the UE initiates the bearer resource allocation process (ie, receives the bearer resource allocation request) Determining the bearer resource allocation policy, and updating all the EPS bearers activated in the bearer information storage unit and their corresponding EPS bearer information according to the execution result of the allocation policy;
  • the bearer allocation unit determines whether the number of currently activated EPS bearers has reached or exceeded the set upper limit. If the set upper limit is not reached or not exceeded, the dedicated activation dedicated bearer process is triggered (ie, the control sending unit sends the active bearer). Context message); if the upper limit is reached or exceeded, the EPS is carried in the bearer information storage unit according to the QCI carried in the bearer resource allocation request, and if the QCI and the bearer resource allocation request corresponding to the EPS bearer are found, When the QCIs are the same, the EPS bearer performs a dedicated bearer modification operation (ie, the control sending unit sends a modify bearer context message) to respond to the bearer resource allocation request.
  • a dedicated bearer modification operation ie, the control sending unit sends a modify bearer context message
  • the bearer allocation unit may obtain the current bearer status of the found EPS bearer from the bearer information storage unit, When the obtained current bearer state is the idle state, the EPS bearer performs a dedicated bearer modification operation (ie, the control sending unit sends a modify bearer context message) to respond to the bearer resource allocation request.
  • a dedicated bearer modification operation ie, the control sending unit sends a modify bearer context message
  • the bearer allocation unit may further search for the priority lower than the bearer in the bearer information storage unit.
  • the EPS bearer of the priority of the EPS bearer requested by the resource allocation request message initiates a dedicated bearer modification process for the found EPS bearer;
  • the bearer allocation unit determines that the activated EPS bears its corresponding QCI and
  • the bearer information may be further searched in the bearer information storage unit for the EPS bearer in the idle state, and then the private bearer modification is initiated for the EPS bearer in the idle state.
  • the bearer allocation unit determines that the QPI of the activated EPS bearer is different from the QCI carried in the bearer resource allocation request message initiated by the UE, And determining, in the bearer information storage unit, an EPS bearer whose priority is lower than the priority of the EPS bearer requested by the bearer resource allocation request message, and the current bearer state is an idle state, and initiating a dedicated bearer modification process for the EPS bearer to respond Received resource allocation request received.
  • the receiving unit 104 is configured to receive the bearer resource allocation request message and forward the message to the bearer allocation list. Yuan
  • the sending unit 105 is arranged to send an activation, modify a bearer context message or reject a bearer resource allocation message according to the control of the bearer allocation unit.
  • the above-mentioned resource allocation device may be an independent network side device, or may be built in any network element of the EPC, such as an MME, a Serving GW, or a PDN GW.
  • the present invention is not limited to the above-mentioned network elements, and those skilled in the art can integrate the functions implemented by the apparatus of the present invention into other network elements of the communication system without inventive effort.
  • the process of carrying the resource allocation by the foregoing bearer resource allocating device, as shown in FIG. 2( a ), includes the following steps:
  • Step 200 After the UE successfully attaches to the network, the bearer resource allocation apparatus acquires and stores EPS bearer information of all EPS bearers activated between the user equipment and the packet data network PDN.
  • the EPS bearer information includes a bearer ID and a service quality classification identifier (QCI). ), priority, and current bearer status (ie, whether there is data transmission on the bearer);
  • QCI service quality classification identifier
  • the bearer resource allocating device may obtain the current loading status of the activated EPS bearer from the transport layer;
  • the bearer resource allocation may be used to establish an EPS bearer information table for storing EPS bearer information of all EPS bearers that have been activated between the user equipment and the packet data network PDN.
  • the established EPS bearer information table may include a user identifier (for example, UE IMSI), bearer identity (eg bearer ID), quality of service classification identifier QCI, priority (obtained from standard QCI characteristics), and current bearer status (ie whether there is data transmission on the bearer);
  • the bearer resource allocation may also use the EPS bearer context to save the EPS bearer information of all EPS bearers activated between the user equipment and the packet data network PDN, that is, to increase the priority of each EPS bearer based on the existing EPS bearer context. Level and current bearer status.
  • Step 201 When the UE initiates the bearer resource allocation request, the bearer resource allocating device performs the decision according to the currently activated bearer number and the EPS bearer information of all currently activated EPS bearers; the step may be further divided into the following steps: As shown in Figure 2 (b):
  • the bearer resource allocation device determines whether the number of activated EPS bearers between the current user equipment and the packet data network PDN reaches or exceeds a set upper limit, and if yes, proceeds to step 201B. If not exceeded, triggering activation of a proprietary bearer context procedure in response to the received bearer resource allocation request;
  • the bearer resource allocation apparatus searches for the saved EPS bearer in the saved EPS bearer information of all currently activated EPS bearers, and the corresponding QCI is the same as the QCI carried in the UE-initiated bearer resource allocation request message. If yes, go to step 201C; if not, reject the bearer resource allocation;
  • the bearer resource allocation device reads the current bearer status corresponding to the found activated EPS bearer from the saved EPS bearer information of all currently activated EPS bearers, and determines whether the read current bearer status is In the idle state (that is, there is no data transmission on the bearer), if yes, the proprietary bearer modification procedure is triggered to respond to the received bearer resource allocation request, and if not, the bearer resource allocation is rejected.
  • step 201B when the bearer resource allocation device determines that the QCI corresponding to the currently activated all EPS bearers and the QCI carried in the UE-initiated bearer resource allocation request message are different, the bearer resource allocation may not be directly rejected. And searching for the EPS bearer whose priority is lower than the priority of the EPS bearer requested by the bearer resource allocation request message from the EPS bearer information of all EPS bearers that are currently activated, and initiating a dedicated bearer modification for the found EPS bearer. a process, in response to the received bearer resource allocation request;
  • the bearer resource allocation device determines that the QCI corresponding to all the currently activated EPS bearers and the QCI carried in the UE-initiated bearer resource allocation request message are different, the bearer may be from all currently activated EPS bearers.
  • the EPS bearer information is used to find an EPS bearer whose current bearer state is in an idle state, and then initiates a dedicated bearer modification procedure for the EPS bearer in the idle state in response to the received bearer resource allocation request.
  • the bearer resource allocation device when the bearer resource allocation device determines that the QCI corresponding to all the currently activated EPS bearers and the QCI carried in the UE-initiated bearer resource allocation request message are different, the bearer may be from all currently activated EPS bearers.
  • the EPS bearer information is searched for an EPS bearer whose priority is lower than the priority of the EPS bearer requested by the bearer resource allocation request message, and the current bearer state is an idle bearer, and a dedicated bearer modification process is initiated for the EPS bearer in response to the received Host a resource allocation request.
  • Step 202 The bearer resource allocation apparatus sends the decision result to the UE, and updates the EPS bearer information of all the currently activated EPS bearers according to the feedback of the UE, and the bearer resource allocation is completed. If the result of the decision is to modify the dedicated bearer, the bearer resource allocation apparatus sends a dedicated bearer context modification request to the UE, where the modified bearer ID is carried, and after receiving the above-mentioned proprietary bearer context modification request, the UE receives the above-mentioned proprietary bearer context modification request.
  • the bearer resource allocation apparatus Updating the local bearer according to the bearer ID carried by the message, and sending a dedicated bearer context modification response to the bearer resource allocation apparatus; the bearer resource allocation apparatus receives the private bearer up and down modification response, and simultaneously updates the EPS bearer information of all currently activated EPS bearers. ;
  • the bearer resource allocation apparatus directly replies to the UE to reject the bearer resource allocation response.
  • the bearer resource allocation device is built in the PDN GW in the EPC (that is, the PDN GW can implement the function of allocating resource allocation).
  • the specific process is as shown in FIG. 3, and includes the following steps. :
  • the PDN GW in the EPC obtains the information of the currently activated EPS bearer, and establishes an EPS bearer information table, where the EPS bearer information table includes the IMSI of all attached UEs, the bearer ID activated by each UE, and the service corresponding to establishing the bearer.
  • Quality classification identifies QCI, priority, and current bearer status;
  • the bearer ID and the QCI that the UE has activated may be obtained from the bearer context that is locally maintained by the PDN GW; and the priority is obtained by querying from the standard QCI feature table (such as Table 1) pre-configured by the operator according to the QCI of the bearer; For the current state of the bearer, a timer can be bound to each bearer. When there is no data transmission on the bearer, the timer is started, the timer expires, and if there is still no data transmission on the bearer, the EPS bearer information table is updated. The state of the bearer is idle; the timer is stopped when there is data transmission on the bearer, and the bearer state is updated to be busy. When the PDN GW completes the bearer related process, the EPS bearer information table is updated synchronously with the local bearer context;
  • Table 1 shows the standard QCI characteristics table. 1 2 100 ms 10" 2 conversational voice
  • step S302 When the UE has attached to the PDN GW and initiates a bearer resource allocation request, the PDN GW first queries whether the current UE bearer number reaches the upper limit from the local bearer context, and if yes, proceeds to step S303, if not , triggering an activation bearer context process to respond to the received bearer resource allocation request;
  • the bearer context modification process is triggered by the PDN GW, and the bearer is modified to be a bearer resource that the UE requests to allocate.
  • FIG. 4 mainly describes the QCI search EPS carried according to the bearer resource allocation request message of the UE. Schematic diagram of the operation flow when there is no bearer of the same QCI in the bearer information table.
  • the specific modification steps include the following steps:
  • S401 Search, according to the QCI carried in the bearer resource allocation request message of the UE, that the bearer of the same QCI does not exist in the EPS bearer information table.
  • S403 Add, in the EPS bearer information table, all the bearer records whose priorities are lower than the priority acquired by S402 into the lookup list;
  • the bearer record nodes in the lookup list are sorted according to the priority from low to high.
  • the bearer record with the lowest priority may be stored in the header;
  • S405 determining whether the lookup list is empty, if yes, the reply rejects the bearer resource allocation response; if not, then transferring to S406;
  • S406 The first node of the header is removed, that is, the bearer with the lowest priority, and it is determined whether the current bearer state of the bearer is idle. If yes, go to S407; if not, go to S408;
  • the bearer context modification process is triggered by the PDN GW, and the bearer is modified to be a bearer resource that the UE requests to allocate.
  • S408 Extract the node from the lookup list, and then go to S405.
  • the PDN GW bearer resource allocation decision ends, and the UE responds to the bearer context activation or modification process.
  • the UE side and the EPC side synchronously update the bearer context, and the bearer resource allocation process ends.
  • the technical solution of the present invention obtains and establishes an EPS bearer information table by the PDN GW in the EPC, including the UE IMSI, the bearer ID, the QoS classification identifier QCI, and the priority (obtained from the standard QCI feature). And the current bearer status (ie, whether there is data transmission on the bearer); then triggering activation or modification of the proprietary bearer process by determining the bearer resource allocation process according to the number of currently activated EPS bearers and the EPS bearer information table.
  • This method has the following advantages: It does not trigger the activation of the proprietary bearer process. When the resources are insufficient (that is, the number of bearers reaches the upper limit), the modification of the proprietary bearer process is triggered, thereby effectively improving the utilization of the bearer resources.
  • the invention can effectively reduce EPC bearer resource waste, reduce delay, improve system utilization efficiency, and realize reasonable allocation of bearer resources.

Abstract

本发明公开了一种承载资源分配方法及装置，涉及通讯领域LTE系统。本发明方法包括：网络侧接收到用户发起的承载资源分配请求时，若当前已激活的EPS承载的个数已达到或超过设定上限，则所述网络侧根据所述承载资源分配请求中携带的QCI从当前已激活的EPS承载中查找EPS承载，如果查找到有EPS承载所对应的QCI与所述承载资源分配请求中携带的QCI相同，则对所查找到的EPS承载进行专有承载修改操作，以响应所述承载资源分配请求。使用本发明实施例提供的技术方案，可以有效减少EPC承载资源浪费，降低时延，提高系统利用效率，实现承载资源的合理分配。

Description

一种承载资源分配方法及装置
技术领域
本发明涉及通讯领域 LTE ( Long Term Evolution, 长期演进）系统中的承 载资源分配过程， 尤其是承载资源分配的分配方法及装置。
背景技术
3GPP ( 3rd Generation Partnership Projection, 第三代合作伙伴计划）演进 的分组系统（ Evolved Packet System , 简称 EPS ) 由演进的陆地无线接入网 ( Evolved UMTS Terrestrial Radio Access Network, 简称 EUTRAN )和 EPS 核心网 （ Evolved Packet Core , 简称 EPC )组成。 其中， EPS核心网由 MME ( Mobility Management Entity, 移动管理实体） 、 Serving GW (服务网关）以 及 PDN GW ( Packet Data Network GW, 分组数据网络网关）组成， 主要负责 移动性的管理、 非接入层信令（Non-Access-Stratum )的处理、 以及 EPS承载 资源控制等相关工作。
EPS承载是一个或多个业务数据流的逻辑集合体， EPS承载位于 UE与 PDN GW之间， 用户设备（UE )附着到核心网后做数据业务时会通过向发起 承载资源分配流程来获得业务所需的承载资源， EPC会根据流程中 UE发送 的请求消息所携带的承载级 QoS参数（Quality of Service, 服务质量）以及业 务流模板（Traffic Flow Template, 简称 TFT ) , 为 UE分配一个符合当前业 务的承载资源。
UE向 EPC发起承载资源分配流程， 可以触发 EPC向 UE发起激活专有 承载或修改专有承载两种流程。 目前， 现有技术中对于实现触发激活专有承 载还是修改专有承载的决策机制， 通常有以下几种技术方案：
方案 1 : 只触发激活专有承载流程，一旦达到承载上限即拒绝当前 UE的 承载资源分配请求；
方案 2: EPC先查找本地与该 UE相关的承载上下文， 若存在与 UE发来 的承载资源分配请求消息中携带的 QCI ( QoS Class Identifier, 服务质量类别 标识）一致的承载， 则发起修改专有承载流程； 若不存在则发起激活专有承 载流程。
分析上述决策方案， 主要存在以下问题：
方案 1 : 最易造成资源浪费， 承载一旦建立无论是否还有数据传输， 承 载都将一直被占用， 这样当承载数达到上限时， 新业务的发起将不再接受， 从而降低了系统资源的利用率；
方案 2: EPC每次收到承载资源分配请求都先进行查找承载上下文， 无 疑提高了系统本身的处理时延， 降低了系统对业务的响应速度。
发明内容
本发明提供一种承载资源分配方法及装置，以实现承载资源的合理分配。 为了解决上述问题， 本发明公开了一种承载资源分配方法， 包括： 网络侧接收到用户发起的承载资源分配请求时， 若当前已激活的 3GPP 演进的分组系统（EPS )承载的个数已达到或超过设定上限， 则所述网络侧 根据所述承载资源分配请求中携带的服务质量类别标识 （QCI )从当前已激 活的 EPS承载中查找 EPS承载， 如果查找到有 EPS承载所对应的 QCI与所 述承载资源分配请求中携带的 QCI相同， 则对所查找到的 EPS承载进行专有 承载修改操作， 以响应所述承载资源分配请求。
该方法还可包括： 网络侧事先保存当前已激活的所有 EPS承载对应的 EPS承载信息， 其中， 该 EPS承载信息包括当前已激活的 EPS承载对应的承 载标识、 QCI和当前承载状态。 该方法还可包括： 网络侧查找到有 EPS承载 所对应的 QCI与所述承载资源分配请求中携带的 QCI相同后，判断所查找到 的 EPS承载的当前承载状态是否为空闲态， 若是， 才对所查找到的 EPS承载 进行专有承载修改操作， 以响应承载资源分配请求。
该方法还可包括： 如果网络侧未查找到有 EPS承载所对应的 QCI与承载 资源分配请求中携带的 QCI相同， 则根据当前已激活的所有 EPS承载对应的 EPS承载信息查找当前承载状态为空闲态的 EPS承载， 并对所查找到的 EPS 承载进行专有承载修改操作， 以响应承载资源分配请求。 EPS承载信息中还可包括当前已激活的 EPS承载对应的优先级； 该方法 还可包括： 如果网络侧未查找到有 EPS承载所对应的 QCI与承载资源分配请 求中携带的 QCI相同， 则根据承载资源分配请求所请求的承载对应的优先级 查找 EPS承载，如果查找到有 EPS承载对应的优先级低于所述承载资源分配 请求所请求的承载对应的优先级， 则对所查找到的 EPS承载进行专有承载修 改操作， 以响应所述承载资源分配请求。 其中， 网络侧查找到有 EPS承载对 应的优先级低于承载资源分配请求所请求的承载对应的优先级后， 还可从当 前已激活的所有 EPS承载对应的 EPS承载信息中获取所查找到的 EPS承载所 对应的当前承载状态， 只有当所获取的当前承载状态为空闲态时， 才对所查 找到的 EPS承载进行专有承载修改操作， 以响应承载资源分配请求。
网络侧在进行专有承载修改操作后， 还可根据操作结果更新并保存当前 已激活的所有 EPS承载对应的 EPS承载信息。
本发明还公开了一种承载资源分配装置，包括承载分配单元和接收单元， 其中：
所述接收单元设置成接收用户发起的承载资源分配请求， 并转发给所述 承载分配单元； 所述承载分配单元设置成： 在收到承载资源分配请求时， 判断当前已激 活的 3GPP演进的分组系统（EPS )承载的个数是否已达到或超过设定上限， 若当前已激活的 EPS承载的个数已达到或超过设定上限， 则根据所述承载资 源分配请求中携带的服务质量类别标识（QCI )从当前已激活的 EPS承载中 查找 EPS承载，如果查找到有 EPS承载所对应的 QCI与所述承载资源分配请 求中携带的 QCI相同， 则对该 EPS承载进行专有承载修改操作， 以响应所述 承载资源分配请求。
该装置还可包括承载信息存储单元； 该承载信息存储单元可设置成保存 当前已激活的所有 EPS承载对应的 EPS承载信息， 其中， 该 EPS承载信息包 括当前已激活的 EPS承载对应的承载标识、 QCI和当前承载状态； 承载分配 单元可设置成根据承载资源分配请求中携带的 QCI在承载信息存储单元中查 找 EPS承载。 承载分配单元还可设置成： 在查找到有 EPS承载所对应的 QCI 与承载资源分配请求中携带的 QCI相同后， 从承载信息存储单元中获取所查 找到的 EPS承载的当前承载状态， 只有当获取的当前承载状态为空闲态时， 才对所查找到的 EPS承载进行专有承载修改操作，以响应承载资源分配请求。
承载分配单元还可设置成： 如果未查找到有 EPS承载所对应的 QCI与承 载资源分配请求中携带的 QCI相同时， 则在承载信息存储单元中查找当前承 载状态为空闲态的 EPS承载， 并对所查找到的 EPS承载进行专有承载修改操 作， 以响应承载资源分配请求。
承载信息存储单元还可设置成保存已激活的 EPS承载对应的优先级； 承 载分配单元还可设置成： 如果未查找到有 EPS承载所对应的 QCI与承载资源 分配请求中携带的 QCI相同， 则根据承载资源分配请求所请求的承载对应的 优先级在承载信息存储单元中查找 EPS承载，如果查找到有 EPS承载对应的 优先级低于承载资源分配请求所请求的承载对应的优先级， 则对所查找到的 EPS承载进行专有承载修改操作， 以响应承载资源分配请求。 其中， 承载分 配单元在查找到有 EPS承载对应的优先级低于承载资源分配请求所请求的承 载对应的优先级后， 还可从承载信息存储单元中获取所查找到的 EPS承载所 对应的当前承载状态， 只有当所获取的当前承载状态为空闲态时， 才对所查 找到的 EPS承载进行专有承载修改操作， 以响应承载资源分配请求。
承载分配单元还可设置成在进行专有承载修改操作后， 根据操作结果更 新并保存承载信息存储单元中保存的当前已激活的所有 EPS承载对应的 EPS 承载信息。
使用本发明实施例提供的技术方案， 可以有效减少 EPC承载资源浪费， 降低时延， 提高系统利用效率， 实现承载资源的合理分配。
附图概述
图 1为本发明提供的一种承载资源分配装置示意图；
图 2 ( a )为图 1所示装置进行 载资源分配的流程图；
图 2 ( b )为图 2 ( a ) 中步骤 201的操作流程图；
图 3 为实施例 1的具体流程示意图；
图 4 为实施例 2的关键流程示意图。 本发明的较佳实施方式
本发明的主要构思是， 可以结合当前已激活的 3GPP 演进的分组系统 ( EPS )承载的个数、 QCL 优先级以及当前承载状态多维实现承载资源分配 流程中 EPS承载资源分配的策略， 即当前已激活的 EPS承载个数未达到设定 上限时， 可以触发激活专用承载流程， 当前已激活的 EPS承载个数达到或超 过设定上限时， 则可以进一步根据所请求的承载的 QCI和 /或优先级， 以及当 前已激活的 EPS承载的 QCI、 优先级和当前承载状态中的任一信息， 决定策 略。
例如， 当前已激活的 EPS承载个数达到或超过设定上限时， 可以查找当 前已激活的 EPS承载中是否有 EPS承载其对应的 QCI与承载资源分配请求消 息中携带的 QCI—致，如果查找到则对所查找到的 EPS承载发起修改专有承 载流程。 优选地， 在查找到 EPS承载其对应的 QCI与承载资源分配请求消息 中携带的 QCI—致时，还可以进一步地判断所查找到的 EPS承载的当前承载 状态为空闲态时， 才发起修改专有承载流程。
下面结合附图及实施例对本发明的实施例进行进一步说明。
一种承载资源分配装置， 如图 1 所示， 包括： 获取单元 101、 承载信息 存储单元 102、 承载分配单元 103、 接收单元 104、 发送单元 105。
获取单元 101设置成获取已附着 UE的承载上下文、 当前承载状态以及 优先级， 并发送到承载信息存储单元中；
承载信息存储单元 102设置成： 根据获取单元发送的信息， 保存当前已 激活的所有 EPS承载的 EPS承载信息，其中， EPS承载信息包括已激活的 EPS 承载对应的承载标识（ID ) 、 QCL 优先级和当前承载状态；
在优先方案中， 承载信息存储单元可以通过建立 EPS承载信息表来保存 当前已激活的所有 EPS承载的 EPS承载信息， 具体地， EPS承载信息表包括 已激活承载 ID, QCL 优先级， 特别是当前承载状态。
承载分配单元 103设置成在 UE发起承载资源分配流程 (即收到承载资 源分配请求） 时， 根据承载信息存储单元中的承载信息 （如承载个数、 QCI、 优先级和当前承载状态） 来确定承载资源分配策略， 以及根据分配策略的执 行结果， 更新承载信息存储单元中已激活的所有 EPS承载及其对应的 EPS承 载信息；
其中， 承载分配单元判断当前已激活的 EPS承载的个数是否已达到或超 过设定上限， 如果未达到或未超过设定上限， 则触发专用激活专有承载流程 (即控制发送单元发送激活承载上下文消息）； 如果已达到或超过设定上限， 则根据承载资源分配请求中携带的 QCI在承载信息存储单元中查找 EPS承 载， 如果查找到有 EPS承载所对应的 QCI与承载资源分配请求中携带的 QCI 相同时， 则对该 EPS承载进行专有承载修改操作 （即控制发送单元发送修改 承载上下文消息） ， 以响应所述承载资源分配请求。 进一步地， 承载分配单 元如果查找到有 EPS承载所对应的 QCI与承载资源分配请求中携带的 QCI 相同时， 还可以从承载信息存储单元中获取所查找到的 EPS承载的当前承载 状态， 仅当所获取的当前承载状态为空闲态时， 对该 EPS承载进行专有承载 修改操作 （即控制发送单元发送修改承载上下文消息） ， 以响应所述承载资 源分配请求。
一些方案中， 承载分配单元判断已激活的 EPS承载其对应的 QCI与 UE 发起的承载资源分配请求消息中所携带的 QCI均不相同时， 可以进一步在承 载信息存储单元中查找优先级低于承载资源分配请求消息所请求的 EPS承载 的优先级的 EPS承载， 对所查找到的 EPS承载发起专有承载修改流程；
还有一些方案中，承载分配单元判断已激活的 EPS承载其对应的 QCI与
UE发起的承载资源分配请求消息中所携带的 QCI均不相同时， 可以进一步 在承载信息存储单元中查找当前承载状态为空闲态的 EPS承载， 然后针对该 空闲态的 EPS承载发起专有承载修改流程，以响应收到的承载资源分配请求； 还有优选方案中，承载分配单元判断已激活的 EPS承载其对应的 QCI与 UE发起的承载资源分配请求消息中所携带的 QCI均不相同时， 可以在承载 信息存储单元中查找优先级低于承载资源分配请求消息所请求的 EPS承载的 优先级， 且当前承载状态为空闲态的 EPS承载， 针对该 EPS承载发起专有承 载修改流程 , 以响应收到的承载资源分配请求。
接收单元 104设置成接收承载资源分配请求消息， 并转发给承载分配单 元；
发送单元 105设置成根据承载分配单元的控制发送激活、 修改承载上下 文消息或拒绝承载资源分配消息。
上述^ ^载资源分配装置可以为独立的网络侧装置， 也可以内置于 EPC的 任一个网元中， 例如 MME、 Serving GW或者 PDN GW等。 但是， 本发明也 不限制于上述这些网元， 本领域技术人员还可以不经过创造性劳动将本发明 装置所实现的功能集成于通信系统的其他网元中。
上述承载资源分配装置进行承载资源分配的过程， 如图 2 ( a )所示， 包 括以下步骤：
步骤 200: UE成功附着网络后， 上述承载资源分配装置获取并保存用户 设备和分组数据网 PDN之间已激活的所有 EPS承载的 EPS承载信息， EPS 承载信息包括承载 ID、 服务质量分类标识（QCI ) 、 优先级以及当前承载状 态 （即在该承载上是否有数据传输 ) ；
其中， 承载资源分配装置可以从传输层获取已激活的 EPS承载的当前承 载状态；
承载资源分配可以建立一个 EPS承载信息表用于保存用户设备和分组数 据网 PDN之间已激活的所有 EPS承载的 EPS承载信息， 具体地， 所建立的 EPS承载信息表， 可以包括用户标识（例如 UE IMSI ) 、 承载标识（例如承 载 ID )、 服务质量分类标识 QCI、 优先级（从标准 QCI特性中获取）以及当 前承载状态 (即在该承载上是否有数据传输 ) ；
承载资源分配也可以利用 EPS承载上下文来保存用户设备和分组数据网 PDN之间已激活的所有 EPS承载的 EPS承载信息， 即在已有的 EPS承载上 下文的基础上， 新增加各 EPS承载的优先级以及当前承载状态。
步骤 201 : 当 UE发起承载资源分配请求时，承载资源分配装置根据当前 已激活的承载个数和当前已激活的所有 EPS承载的 EPS承载信息进行决策； 该步骤可进一步分为以下几个步骤， 如图 2 ( b )所示：
201A: 承载资源分配装置判断当前用户设备和分组数据网 PDN之间已 激活的 EPS承载个数是否达到或超过设定上限， 如果是， 则转入步骤 201B, 若未超过则触发激活专有承载上下文流程，以响应收到的承载资源分配请求；
201B: 承载资源分配装置在所保存的当前已激活的所有 EPS承载的 EPS 承载信息中查找是否存在有已激活的 EPS承载其对应的 QCI与 UE发起的承 载资源分配请求消息中所携带的 QCI相同， 如果有， 转入步骤 201C; 若没有 则拒绝承载资源分配；
201C: 承载资源分配装置从所保存的当前已激活的所有 EPS承载的 EPS 承载信息中读取所查找到的已激活的 EPS承载所对应的当前承载状态， 判断 所读取的当前承载状态是否为空闲态 （即该承载上无数据传输） ， 如果是， 则触发专有承载修改流程， 以响应收到的承载资源分配请求， 如果不是则拒 绝承载资源分配。
有一些方案中，步骤 201B中，承载资源分配装置判断当前已激活的所有 EPS承载对应的 QCI与 UE发起的承载资源分配请求消息中所携带的 QCI均 不相同时， 可以不直接拒绝承载资源分配， 而是从当前已激活的所有 EPS承 载的 EPS承载信息中查找优先级低于承载资源分配请求消息所请求的 EPS承 载的优先级的 EPS承载， 对所查找到的 EPS承载发起专有承载修改流程， 以 响应收到的承载资源分配请求；
还有一些方案中， 承载资源分配装置判断当前已激活的所有 EPS承载对 应的 QCI与 UE发起的承载资源分配请求消息中所携带的 QCI均不相同时， 可以从当前已激活的所有 EPS承载的 EPS承载信息中查找当前承载状态为空 闲态的 EPS承载， 然后针对该空闲态的 EPS承载发起专有承载修改流程， 以 响应收到的承载资源分配请求。
还有优选方案中， 承载资源分配装置判断当前已激活的所有 EPS承载对 应的 QCI与 UE发起的承载资源分配请求消息中所携带的 QCI均不相同时， 可以从当前已激活的所有 EPS承载的 EPS承载信息中查找优先级低于承载资 源分配请求消息所请求的 EPS承载的优先级， 且当前承载状态为空闲态的 EPS承载， 针对该 EPS承载发起专有承载修改流程， 以响应收到的承载资源 分配请求。
步骤 202: 承载资源分配装置将决策结果发送给 UE, 并根据 UE的反馈 更新保存当前已激活的所有 EPS承载的 EPS承载信息， 承载资源分配完成； 其中， 若决策结果为修改专有承载时， 承载资源分配装置向 UE发送专 有承载上下文修改请求， 其中， 携带所修改的承载 ID, 此时， UE接收到上 述专有承载上下文修改请求后，根据消息所携带的承载 ID更新本地承载， 并 向承载资源分配装置发送专有承载上下文修改响应； 承载资源分配装置接收 专有承载上下修改响应， 同时更新当前已激活的所有 EPS承载的 EPS承载信 息；
若决策结果为拒绝承载资源分配时， 承载资源分配装置向 UE直接回复 拒绝承载资源分配响应。
下面结合具体应用场景， 说明承载资源分配的具体过程。
实施例 1 :
本实施例介绍一种承载资源分配的优选方案， 其中， 承载资源分配装置 内置于 EPC中的 PDN GW (即 PDN GW可实现承载资源分配的功能 ) , 具 体过程如图 3所示， 包括以下步骤：
S301 : EPC中的 PDN GW获取目前已激活的 EPS承载的信息， 并建立 EPS承载信息表， EPS承载信息表中包括所有已附着 UE的 IMSI、 各 UE已 激活的承载 ID和建立承载对应的服务质量分类标识 QCI、优先级以及当前承 载状态；
其中， UE已激活的承载 ID和 QCI可从 PDN GW本地维护的承载上下 文中获取； 而优先级则是根据承载的 QCI从运营商预先配置的标准 QCI特性 表（如表 1 ) 中查询得到； 对于承载当前的状态， 可以通过为每一个承载绑 定一个定时器， 当承载上无数据传输时启动该定时器， 定时器超时， 若承载 上仍无数据传输则更新此 EPS承载信息表中该承载的状态为空闲态； 当承载 上有数据传输时停止定时器， 同时更新此承载状态为忙碌态。 当 PDN GW完 成承载相关流程时， 所述 EPS承载信息表随本地承载上下文同步更新；
表 1为标准 QCI特性表
Figure imgf000011_0001
1 2 100 ms 10"2 会话语音
2 4 150 ms 10"3 会话视频 （直播流媒体）
GBR
3 3 50 ms 10"3 实时游戏
4 5 300 ms 10"6 非会话视频 （缓冲流媒体）
5 1 100 ms 10"6 IMS信令 视频 （缓冲流媒体） 、 基于 TCP的业务如 www、 Emaik
6 6 300 ms 10"6
聊天、 FTP, PSP文件共享、 逐行扫描视频
Non-GBR
语音、视频（直播流媒体）、
7 7 100 ms 10"3
交互式游戏
8 8 视频 （缓冲流媒体） 、 基于
TCP的业务如 www、 Emaik
300 ms 10"6
聊天、 FTP, PSP文件共享、
9 9
逐行扫描视频
S302:当 UE已附着到该 PDN GW且发起承载资源分配请求时， PDN GW 首先从本地承载上下文中查询当前 UE的承载数是否达到设定上限， 如果是， 则转 S303步骤， 若未超过则， 触发激活承载上下文流程， 以响应所收到的承 载资源分配请求；
S303: 根据 UE的承载资源分配请求消息所携带的 QCI查找 EPS承载信 息表中是否存在相同 QCI的承载， 如果存在， 转 S303步骤， 若不存在则回 复拒绝承载资源分配响应；
S304: 从 EPS承载信息表中获取该承载的当前承载状态， 判断当前承载 状态是否为空闲态， 如果是， 转 S305, 如果不是则回复拒绝承载资源分配响 应；
S305: 由 PDN GW触发承载上下文修改流程， 将此承载修改为 UE请求 分配的承载资源；
PDN GW承载资源分配决策结束， UE响应承载上下文激活或修改流程， 承载上下文激活或修改流程完成后， UE侧和 EPC侧同步更新承载上下文， 承载资源分配流程结束。
实施例 2:
为了提高承载资源的利用率，本实施例将实施例 1中的 S303步骤作如下 修改亦可实现， 需要说明的是， 图 4主要描述了根据 UE的承载资源分配请 求消息所携带的 QCI查找 EPS承载信息表中不存在相同 QCI的承载时的操作 流程示意图。
具体修改步骤包括以下步骤：
S401 : 根据 UE的承载资源分配请求消息所携带的 QCI查找 EPS承载信 息表中不存在相同 QCI的承载；
S402: 根据 UE的承载资源分配请求消息所携带的 QCI查找标准 QCI特 性表（如表 1 ) , 获取对应的优先级；
S403: 将 EPS承载信息表中所有优先级低于 S402所获取到的优先级的 承载记录加入到查找链表中；
S404: 将查找链表中承载记录节点按优先级由低到高排序， 本实施例中， 可以在表头存放优先级最低的承载记录；
S405: 判断查找链表是否为空， 如果是， 则回复拒绝承载资源分配响应； 若不为空则转入 S406;
S406: 取出表头首节点， 即优先级最低的承载， 判断该承载的当前承载 状态是否为空闲态， 如果是， 转 S407; 如果不是则转 S408;
S407: 由 PDN GW触发承载上下文修改流程， 将此承载修改为 UE请求 分配的承载资源；
S408: 从查找链表中摘取此节点， 转 S405。 PDN GW承载资源分配决策结束， UE响应承载上下文激活或修改流程， 承载上下文激活或修改流程完成后， UE侧和 EPC侧同步更新承载上下文， 承载资源分配流程结束。
从上述实施例可以看出， 本发明技术方案由 EPC中 PDN GW获取并建 立 EPS承载信息表， 其中， 包括 UE IMSI、承载 ID、服务质量分类标识 QCI、 优先级（从标准 QCI特性中获取） 以及当前承载状态 （即在该承载上是否有 数据传输）； 然后由根据当前已激活的 EPS承载的个数以及 EPS承载信息表 决策承载资源分配流程触发激活或修改专有承载流程。 此方法主要有以下优 点： 不会一味触发激活专有承载流程， 在资源不足（即承载数达上限） 时， 触发修改专有承载流程， 从而有效地提高了承载资源的利用率；
不会只将 QCI作为决策触发何种流程的唯一依据， 而是引入了优先级映 射以及实时更新承载状态机制。
由于决策原则为只修改优先级低且承载状态为空闲态的承载， 因此极大 的提高了数据传输的可靠' \ί和实时性， 减少资源浪费的同时实现了承载的合 理有效分配。
以上所述， 仅为本发明的较佳实例而已， 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， 所做的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。
工业实用性
与现有技术相比， 本发明可以有效减少 EPC承载资源浪费， 降低时延， 提高系统利用效率， 实现承载资源的合理分配。

Claims

权 利 要 求 书
1、 一种承载资源分配方法， 包括：
网络侧接收到用户发起的承载资源分配请求时， 若当前已激活的第三代 合作伙伴计划 3GPP演进的分组系统 EPS承载的个数已达到或超过设定上限， 则所述网络侧根据所述承载资源分配请求中携带的服务质量类别标识 QCI从 当前已激活的 EPS承载中查找 EPS承载， 如果查找到有 EPS承载所对应的 QCI与所述承载资源分配请求中携带的 QCI相同， 则对所查找到的 EPS承载 进行专有承载修改操作， 以响应所述承载资源分配请求。
2、 如权利要求 1所述的方法， 还包括：
所述网络侧事先保存当前已激活的所有 EPS承载对应的 EPS承载信息， 其中， 所述 EPS承载信息包括当前已激活的 EPS承载对应的承载标识、 QCI 和当前 载状态。
3、如权利要求 2所述的方法，还包括： 所述网络侧查在找到有 EPS承载 所对应的 QCI与所述承载资源分配请求中携带的 QCI相同后，判断所查找到 的 EPS承载的当前承载状态是否为空闲态， 若是， 才对所查找到的 EPS承载 进行专有承载修改操作， 以响应所述承载资源分配请求。
4、 如权利要求 2所述的方法， 还包括：
如果所述网络侧未查找到有 EPS承载所对应的 QCI与所述承载资源分配 请求中携带的 QCI相同，则根据当前已激活的所有 EPS承载对应的 EPS承载 信息查找当前承载状态为空闲态的 EPS承载， 并对所查找到的 EPS承载进行 专有承载修改操作， 以响应所述承载资源分配请求。
5、 如权利要求 2所述的方法， 其中，
所述 EPS承载信息中还包括当前已激活的 EPS承载对应的优先级； 所述方法还包括： 如果所述网络侧未查找到有 EPS承载所对应的 QCI与 所述承载资源分配请求中携带的 QCI相同， 则根据所述承载资源分配请求所 请求的承载对应的优先级查找 EPS承载，如果查找到有 EPS承载对应的优先 级低于所述承载资源分配请求所请求的承载对应的优先级， 则对所查找到的 EPS承载进行专有承载修改操作， 以响应所述承载资源分配请求。
6、如权利要求 5所述的方法，还包括： 所述网络侧在查找到有 EPS承载 对应的优先级低于所述承载资源分配请求所请求的承载对应的优先级后， 从 所述当前已激活的所有 EPS承载对应的 EPS承载信息中获取所查找到的 EPS 承载所对应的当前承载状态， 只有当所获取的当前承载状态为空闲态时， 才 对所查找到的 EPS承载进行专有承载修改操作， 以响应所述承载资源分配请 求。
7、 如权利要求 2至 6任一项所述的方法， 还包括：
所述网络侧在进行专有承载修改操作后， 根据操作结果更新并保存当前 已激活的所有 EPS承载对应的 EPS承载信息。
8、 一种承载资源分配装置， 包括承载分配单元和接收单元， 其中： 所述接收单元设置成接收用户发起的承载资源分配请求， 并转发给所述 承载分配单元； 所述承载分配单元设置成： 在收到承载资源分配请求时， 判断当前已激 活的第三代合作伙伴计划 3GPP演进的分组系统 EPS承载的个数是否已达到 或超过设定上限， 若是， 则根据所述承载资源分配请求中携带的服务质量类 别标识 QCI从当前已激活的 EPS承载中查找 EPS承载， 如果查找到有 EPS 承载所对应的 QCI与所述承载资源分配请求中携带的 QCI相同，则对所查找 到的 EPS承载进行专有承载修改操作， 以响应所述承载资源分配请求。
9、 如权利要求 8所述的装置， 还包括承载信息存储单元；
所述承载信息存储单元设置成保存当前已激活的所有 EPS承载对应的
EPS承载信息， 其中， 所述 EPS承载信息包括当前已激活的 EPS承载对应的 承载标识、 QCI和当前承载状态；
所述承载分配单元是设置成根据所述承载资源分配请求中携带的 QCI在 所述承载信息存储单元中查找 EPS承载。
10、 如权利要求 9所述的装置， 其中，
所述承载分配单元还设置成： 在查找到有 EPS承载所对应的 QCI与所述 承载资源分配请求中携带的 QCI相同后， 从所述承载信息存储单元中获取所 查找到的 EPS承载的当前承载状态， 只有获取的当前承载状态为空闲态时， 才对所查找到的 EPS承载进行专有承载修改操作， 以响应所述承载资源分配 请求。
11、 如权利要求 9所述的装置， 其中，
所述承载分配单元还设置成： 如果未查找到有 EPS承载所对应的 QCI与 所述承载资源分配请求中携带的 QCI相同， 则在所述承载信息存储单元中查 找当前承载状态为空闲态的 EPS承载， 并对所查找到的 EPS承载进行专有承 载修改操作， 以响应所述承载资源分配请求。
12、 如权利要求 9所述的装置， 其中，
所述承载信息存储单元还设置成保存已激活的 EPS承载对应的优先级； 所述承载分配单元还设置成： 如果未查找到有 EPS承载所对应的 QCI与 所述承载资源分配请求中携带的 QCI相同， 则根据所述承载资源分配请求所 请求的承载对应的优先级在所述承载信息存储单元中查找 EPS承载， 如果查 找到有 EPS承载对应的优先级低于所述承载资源分配请求所请求的承载对应 的优先级， 则对所查找到的 EPS承载进行专有承载修改操作， 以响应所述承 载资源分配请求。
13、 如权利要求 12所述的装置， 其中，
所述承载分配单元还设置成： 在查找到有 EPS承载对应的优先级低于所 述承载资源分配请求所请求的承载对应的优先级后， 从所述承载信息存储单 元中获取所查找到的 EPS承载所对应的当前承载状态， 只有当所获取的当前 承载状态为空闲态时， 才对所查找到的 EPS承载进行专有承载修改操作， 以 响应所述承载资源分配请求。
14、 如权利要求 9至 13任一项所述的装置， 其中，
所述承载分配单元还设置成： 在进行专有承载修改操作之后， 根据操作 结果更新并保存所述承载信息存储单元中保存的当前已激活的所有 EPS承载 对应的 EPS承载信息。
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