WO2014008787A1 - 一种区分信令来源的方法及用户设备 - Google Patents
一种区分信令来源的方法及用户设备 Download PDFInfo
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- WO2014008787A1 WO2014008787A1 PCT/CN2013/076424 CN2013076424W WO2014008787A1 WO 2014008787 A1 WO2014008787 A1 WO 2014008787A1 CN 2013076424 W CN2013076424 W CN 2013076424W WO 2014008787 A1 WO2014008787 A1 WO 2014008787A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
- H04W36/026—Multicasting of data during hand-off
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method for distinguishing a signaling source and a user equipment. Background technique
- the E-UTRAN is composed of an eNB (Evolved Base Station).
- the MME Mobility Management Entity
- the eNB completes the access network function and communicates with the UE (User Equipment) through the air interface.
- the MME User Equipment
- the S1-MME interface provides the UE with control plane services, including mobility management and bearer management functions.
- the RRC/PDCP/RLC/MAC/PHY peer layer of the UE is located in the same eNB, and the NAS layer peer layer of the UE is located in the same eNB as the UE.
- S1 is connected to the MME.
- the PDCP and the RLC entity correspond to the DRB (Data Radio Bearer)/SRB (Signal Radio Bearer) 1/SRB2, and each DRB and SRB1 and SRB2 respectively correspond to one set.
- PDCP and RLC entities; DRB/SRB1/SRB2 are aggregated at the MAC layer. Therefore, the UE will be composed of multiple sets of PDCP and RLC entities at the same time, but only one MAC layer and physical layer entity.
- the SRB belongs to the control plane bearer, and the DRB belongs to the user plane bearer. As shown in FIG.
- a macro cell provides a basic coverage
- a local cell provides hotspot coverage
- a data/signaling interface exists between the Local Cell and the Macro Cell (wired / Wireless interface)
- the UE can work under the Macro eNB (macro base station) or Local eNB (local base station).
- the UE connected to the Local eNB can often obtain a better service shield, such as obtaining a higher service rate and a higher shield link. Therefore, when the UE connected to the Macro eNB approaches the cell controlled by the Local eNB, it can switch to the Local eNB to obtain the service provided by the Local eNB; when the UE is away from the cell controlled by the Local eNB, it needs to switch to the cell controlled by the Macro eNB to Stay connected wirelessly. Due to the large number of local eNBs and small coverage, the UE needs to frequently switch between the cell controlled by the Macro eNB and the cell controlled by the Local eNB. Since the switching frequency and the number of times of the UE are greatly increased, the risk of communication interruption of the UE when performing handover is increased. Summary of the invention
- the present invention provides a method for distinguishing a signaling source and a user equipment, which are used to solve the existing hierarchical structure of the network architecture of the E-UTRAN, because the switching frequency and the number of times of the UE are greatly increased, thereby increasing the UE in the The problem of the risk of communication interruption when switching.
- a method of distinguishing signaling sources including:
- the user equipment UE is connected to the control planes of the two base stations, and receives control plane signaling from any eNB.
- the UE determines, according to the control plane signaling, identifier-related information for indicating the eNB, and according to the identifier.
- the relevant information determines the e B of the source of the control plane signaling.
- a determining unit configured to determine, according to the control plane signaling, identifier related information used to indicate the eNB, and determine e B of the control plane signaling source according to the identifier related information.
- FIG. 3 is a schematic diagram of a control plane protocol stack between a UE and a network in the background art
- FIG. 5 is a schematic diagram of a layered network deployment scenario in the background art
- FIG. 6 is a network architecture of separating a user plane and a control plane according to an embodiment of the present invention
- FIG. 7 is a schematic diagram of separation of a user plane and a control plane according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of a control plane protocol stack of a local base station according to an embodiment of the present invention.
- FIG. 9 is a schematic flowchart of a signaling source distinguishing method according to an embodiment of the present invention.
- FIG. 10 is a schematic diagram of a UE connecting to two base stations according to an embodiment of the present invention.
- FIG. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 13 is a schematic structural diagram of another user equipment according to an embodiment of the present invention. detailed description
- a network deployment mode in which the user plane and the control plane are separated is introduced.
- the control plane and the user plane of the UE are both connected to the Macro eNB; when the UE moves to the overlapping area of the Macro eNB cell and the Local eNB cell
- all or part of the UE user plane is transferred to the Local eNB to obtain a higher service transmission rate; the control plane connection remains in the Macro eNB to prevent the control plane connection handover failure from causing the UE to drop calls.
- the Macro eNB is an LTE macro base station; the Local eNB is a Pico eNB (micro base station) or a Home eNB (home base station) or a relay (relay) device of the LTE.
- the Local eNB is a Pico eNB (micro base station) or a Home eNB (home base station) or a relay (relay) device of the LTE.
- the UE is simultaneously connected to two or more e Bs. As shown in FIG. 7, the UE is simultaneously connected to the Macro eNB and the Local eNB to obtain a control plane and a user plane connection, respectively. Specifically, the UE can be Part of the user plane is separated from the control plane, or all bearers of the user plane of the UE are separated from the control plane.
- the Macro eNB has a complete user plane and control plane protocol stack, that is, a user plane protocol stack and a control plane protocol stack that are peered with the UE.
- the Local eNB provides user plane data transmission functions for the UE, and has a complete user plane protocol stack.
- the Local eNB should also have a partial RRC protocol function, and its control plane protocol stack is as shown in FIG. 8.
- the Sub RRC (sub-RRC) layer indicates a protocol stack that only contains part of the RRC function, for example, only includes radio resource management.
- the UE In the hierarchical network architecture in which the user plane and the control plane are separated, the UE is connected to the control plane of the two eNBs at the same time, and both eNBs can send radio resources related to the RRC signaling configuration to the UE, so that the UE can distinguish the signaling.
- the source eNB is configured to ensure that the radio resource can be correctly configured, and the RRC message response is returned.
- the embodiment of the present invention provides a signaling source distinguishing method.
- the UE moves to an area jointly covered by the macro base station and the local base station as an example, that is, the UE establishes a control plane connection with the macro base station and the local base station at the same time.
- the signaling source distinguishing method provided by the embodiment of the present invention mainly includes the following steps:
- Step 901 The UE establishes a control plane connection with two base station eNBs at the same time, and receives control plane signaling from any eNB.
- Step 902 The UE determines, according to the control plane signaling, the identifier related information used to indicate the eNB, and determines the e B of the control plane signaling source according to the identifier related information.
- the identifier related information includes but is not limited to: a bearer identifier, a signaling identifier, or an eNB index identifier carried in the control plane signaling.
- the identifier related information is a bearer identifier carried in the control plane signaling
- the UE determines that the bearer identifier carried in the control plane signaling is a identifier of a dedicated SRB predefined for the local base station, and determines the control.
- the surface signaling is derived from the local base station; otherwise, it is determined that the control plane signaling is derived from the macro base station.
- a new signaling radio bearer SRB3 is defined for the network architecture in which the user plane and the control plane are separated, and the
- SRB3 is dedicated to the local base station. As shown in Figure 10, when the UE establishes control plane signaling connection with the macro base station and the local base station, the macro base station transmits SRB1 and SRB2, and the local base station transmits SRB3.
- the control plane signaling transmitted on the SRB3 is an RRC message related to the DRB, including but not limited to: an RRC message for bearer management, an RRC message for radio resource management, and an RRC message for configuring the SRB. One or more combinations.
- a counter check (Counter check) message and a counter check response (Count Check Response) message for verifying the integrity of the count value (Count) of the DRB are transmitted on SRB3 dedicated to the local base station.
- the RRC message for DRB related radio resource management may be a message configured for the physical layer, the MAC layer, the RLC, and the PDCP of the UE; the message used for configuring the SRB may be specifically used to add, modify, and Operations such as deletion can also be used to modify SRB3.
- the configuration information related to the SRB3 may be pre-agreed by the UE and the local base station by using a protocol, or may be configured by the local base station.
- the RRC message transmitted on the SRB3 may be an RRC message specified in the existing protocol, or may be a predefined RRC message agreed by the UE and the local base station.
- the UE after receiving the RRC message sent by any eNB, the UE obtains the bearer identifier carried in the RRC message, and determines whether the bearer identifier is a dedicated bearer of the local base station, and determines the base station of the RRC message, and according to the RRC message pair.
- the MAC layer and the physical layer entity of the UE corresponding to the determined base station are configured, and the PDCP and RLC parameters mapped to the bearer transmitted on the MAC layer entity are configured.
- the identifier related information is a signaling identifier carried in the control plane signaling
- the UE determines that the signaling identifier carried in the control plane signaling is an identifier of a dedicated RRC message predefined for the local base station, Determining that the control plane signaling originates from the local base station; otherwise, determining that the control plane signaling is derived from the macro base station.
- one or more new RRC messages are defined, which are used exclusively for the local base station, and after the SRB1/SRB2 bearer is established between the UE and the local base station, as shown in FIG.
- the dedicated RRC message is transmitted on the bearer.
- the local base station is allowed to use the dedicated RRC message only when the UE establishes a control plane connection with the macro base station and the local base station at the same time.
- the predefined RCC messages dedicated to the local base station include, but are not limited to: an RRC message for bearer management, an RRC message for radio resource management, and an RRC message for configuring the SRB.
- the UE After receiving the RRC message, the UE acquires the signaling identifier carried in the RRC message, and determines whether the signaling identifier is a predefined identifier of the signaling dedicated to the local base station, and determines the eNB of the RRC message. And configuring, according to the RRC message, a MAC layer and a physical layer entity of the UE corresponding to the determined eNB, and configuring mapping to the PDCP and the RLC transmitted on the MAC layer entity.
- the predefined RRC message dedicated to the local base station includes: an RRC message for bearer management operations such as addition, modification, and deletion of the DRB; for radio resource management operations such as physical layer, MAC layer, RLC, and PDCP configuration.
- RRC message for SRB1/SRB2 related radio resource management.
- the identifier related information is an eNB index identifier (eNB index), and the control plane signaling that carries the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling (such as physical layer downlink scheduling). Signaling or physical layer uplink scheduling signaling).
- eNB index eNB index
- the control plane signaling that carries the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling (such as physical layer downlink scheduling). Signaling or physical layer uplink scheduling signaling).
- a new parameter is defined in an RRC message specified in an existing protocol: an eNB index identifier, the eNB index The identifier is used to distinguish between different e Bs.
- the value of the parameter may be an enumeration type, for example, the parameter is ⁇ local, macro ⁇ , where local refers to the local base station, macro refers to the macro base station, and if the value of the parameter is ⁇ 0, 1 ⁇ refers to the macro base station. If the value of this parameter is ⁇ 1,0 ⁇ , it refers to the local base station; the value of this parameter can also be Boolean. For example, occupy one bit in the RRC message, and define the bit as A value of 0 refers to a macro base station, and this bit is 1 to refer to a local base station.
- the UE After receiving the RRC message sent by the base station, the UE obtains the eNB index identifier from the predetermined location according to the agreement, determines the base station from which the RRC message is originated according to the eNB index identifier, and then, according to the RRC message, the eNB message corresponding to the determined base station.
- the MAC layer and the physical layer of the UE are configured, and the PDCP and RLC parameters mapped to the bearers transmitted on the MAC layer entity are configured.
- the UE when transmitting the RRC message, the UE adds an eNB index identifier to the RRC message according to the agreement to ensure that the transmitted RRC is received by the correct eNB.
- the identifier related information may also be a MAC layer index identifier or a physical layer identifier I carried in the control plane signaling.
- the UE determines the eNB of the control plane signaling source according to the MAC layer index identifier or the physical layer index identifier carried in the control plane signaling, which is specifically:
- the UE determines the eNB corresponding to the physical layer index identifier carried in the control plane signaling according to the association relationship between the preset physical layer index and the eNB, and determines the eNB as the eNB of the control plane signaling source.
- the physical resources or cell identifiers corresponding to the two sets of the MAC layer and the physical layer entity that are included in the UE are different, and each set of the MAC layer and the physical layer entity correspond to different base stations.
- the association relationship between the MAC layer and the physical layer entity and the physical resource and the base station can be established, or the association relationship between the MAC layer and the physical layer entity and the cell identifier and the base station can be established, and the physical resource or the cell identifier is used as the Determining the identification information of the base station.
- the UE determines the physical resource (such as the receiving frequency) corresponding to the received control plane signaling, and determines the eNB of the control plane signaling source according to the association relationship between the preset MAC layer and the physical layer entity and the two base stations and physical resources;
- the UE determines the cell identifier corresponding to the received control plane signaling, and determines the eNB of the control plane signaling source according to the preset relationship between the MAC layer and the physical layer entity and the two base stations and the cell identifier.
- the information combining the frequency point and the PCI may be used as the cell identifier.
- an embodiment of the present invention further provides a user equipment that distinguishes a signaling source, and the user equipment
- the user equipment For the implementation of the user equipment, refer to the implementation of the foregoing method.
- the user equipment mainly includes the following units:
- the receiving unit 1201 is configured to receive control plane signaling from any eNB.
- the determining unit 1202 is configured to determine, according to the control plane signaling, identifier related information used to indicate the eNB, and determine e B of the control plane signaling source according to the identifier related information.
- the identifier related information is a bearer identifier, a signaling identifier, or an eNB index identifier that is carried in the control plane signaling.
- the determining unit is specifically for:
- Determining that the control plane signaling originates from the local base station when determining that the bearer identifier carried in the control plane signaling is the identifier of the dedicated signaling radio bearer SRB predefined for the local base station; otherwise, determining that the control plane signaling is originated from the macro base station .
- the determining unit is specifically for:
- the control plane signaling is an identifier of a dedicated RRC message predefined for the local base station, it is determined that the control plane signaling is originated from the local base station; otherwise, the control plane signaling is determined to be derived from the macro base station.
- control plane signaling carrying the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling.
- the identifier related information is a MAC layer index identifier or a physical layer index identifier carried in the control plane signaling;
- the determining unit is specifically used for:
- the eNB corresponding to the physical layer identifier I carried in the control plane signaling is determined according to the preset relationship between the physical layer and the eNB, and the eNB is determined as the eNB of the control plane signaling source.
- the determining unit is specifically configured to:
- Determining the physical resource corresponding to the control plane signaling determining the eNB of the control plane signaling source according to the association relationship between the preset physical layer and the MAC layer entity and the base station and the physical resource, where the physical resources corresponding to each physical layer and the MAC layer entity Or the cell identifier is different;
- the cell identifier corresponding to the control plane signaling is determined, and the eNB of the control plane signaling source is determined according to a preset relationship between the physical layer and the MAC layer entity and the two base stations and the cell identifier.
- FIG. 13 is another user equipment according to an embodiment of the present invention, including:
- a receiver 1301, configured to receive control plane signaling from any eNB;
- the processor 1302 is configured to determine, according to the control plane signaling, identifier related information used to indicate the eNB, and according to the identifier phase The information determines the e B of the source of the control plane signaling.
- the identifier related information is a bearer identifier, a signaling identifier, or an eNB index identifier that is carried in the control plane signaling.
- the processor 1302 is specifically configured to:
- Determining that the control plane signaling originates from the local base station when determining that the bearer identifier carried in the control plane signaling is the identifier of the dedicated signaling radio bearer SRB predefined for the local base station; otherwise, determining that the control plane signaling is originated from the macro base station .
- the processor 1302 is specifically configured to:
- the control plane signaling is an identifier of a dedicated RRC message predefined for the local base station, it is determined that the control plane signaling is originated from the local base station; otherwise, the control plane signaling is determined to be derived from the macro base station.
- control plane signaling carrying the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling.
- the identifier related information is a MAC layer index identifier or a physical layer index identifier carried in the control plane signaling;
- the processor 1302 is specifically configured to:
- the eNB corresponding to the physical layer identifier I carried in the control plane signaling is determined according to the preset relationship between the physical layer and the eNB, and the eNB is determined as the eNB of the control plane signaling source.
- the processor 1302 is specifically configured to:
- Determining physical resources corresponding to the control plane signaling determining an eNB of the control plane signaling source according to the association relationship between the preset physical layer and the MAC layer entity and the base station and the physical resource, where the physical resources corresponding to each physical layer and the MAC layer entity Or the cell identifier is different;
- the cell identifier corresponding to the control plane signaling is determined, and the eNB of the control plane signaling source is determined according to a preset relationship between the physical layer and the MAC layer entity and the two base stations and the cell identifier.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer usable storage modules (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
- computer usable storage modules including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Description
一种区分信令来源的方法及用户设备 本申请要求在 2012年 7月 11 日提交中国专利局、 申请号为 201210240589.3、 发明名称 为"一种区分信令来源的方法及用户设备"的中国专利申请的优先权, 其全部内容通过引用结 合在本申请中。
技术领域
本发明涉及通信技术领域, 尤其涉及一种区分信令来源的方法及用户设备。 背景技术
如附图 1所示, E-UTRAN ( Evolved Universal Terrestrial Radio Access Network, 演进的通 用陆地无线接入网) 的网络架构示意图中, E-UTRAN由 eNB (演进型基站)组成。
MME ( Mobility Management Entity, 移动性管理实体) 与 eNB之间釆用 S1-MME接口 相连; eNB 完成接入网功能, 与 UE (用户设备)通过空口通信。 对于每一个附着到网络的 UE, 有一个 MME为其提供服务, 该 MME称为 UE的服务 MME。 S1-MME接口为 UE提供 对控制面服务, 包括移动性管理和承载管理功能。
S-GW ( Serving GW, 服务网关)与 eNB之间釆用 S1-U接口相连, 对于每一个附着到网 络的 UE, 有一个 S-GW为其提供服务, 该 S-GW称为 UE的服务 S-GW。 S1-U接口为 UE提 供用户面服务, UE的用户面数据通过 Sl-U GTP ( GTP, GPRS Tunneling Protocol, GPRS隧 道协议; GPRS, General Packet Radio Service, 通用分组无线业务)承载在 S-GW和 eNB之 间传输。
UE与网络之间的用户面协议栈如附图 2所示,控制面协议栈如附图 3所示,用户面协议 包括 PDCP( Packet Data Convergence Protocol,分组数据聚合协议 ), RLC( Radio Link Control, 无线链路控制), MAC ( Medium Access Control, 媒体接入控制)和 PHY (物理层); 控制面 协议包括 RRC ( Radio Resource Control, 无线资源控制)和 NAS ( Non- Access Stratum, 非接 入层), 其中, RRC层消息需要经过用户面协议层的处理, 再在空口进行传输; NAS层消息 在空口封装在 RRC消息中传输; 在 S1-MME接口, 在 S1连接上传输。
在现有的 LTE/LTE-A网络中, UE的 RRC/PDCP/RLC/MAC/PHY对等层都位于同一个 eNB 内, UE的 NAS层对等层位于与上述 eNB建立了针对该 UE的 S1连接的 MME内。
在现有协议中, PDCP和 RLC实体与 DRB( Data Radio Bearer,数据无线承载)/ SRB( Signal Radio Bearer, 信令无线承载) 1/SRB2对应, 每一条 DRB和 SRB1 , SRB2都分别对应一套 PDCP和 RLC实体; DRB/SRB1/SRB2在 MAC层汇聚。因此, UE会同时由多套 PDCP和 RLC 实体, 但只有一个 MAC层和物理层实体。 SRB属于控制面承载, DRB属于用户面承载。
其中, 如附图 4所示, UE的控制面连接由 UE与服务 eNB之间的 RRC连接和 eNB与 MME之间的 S1连接组成, 每个处于连接状态的 UE都与服务 eNB之间建立有 RRC连接, 相应地, eNB与 MME之间会为每一个处于连接状态的 UE建立一条 S1连接与 RRC连接对 应。 在现有的 LTE/LTE-A (长期演进 /先进的长期演进) 网络中, UE的控制面连接与用户面 连接经由同一个 eNB。
在如附图 5所示的现有分层网络中,宏小区( Macro cell )提供基础覆盖,本地小区( Local cell )提供热点覆盖, Local Cell与 Macro Cell之间存在数据 /信令接口 (有线 /无线接口), UE 可以工作在 Macro eNB (宏基站)或 Local eNB (本地基站) 下。
由于 Local eNB控制的小区覆盖范围小、 服务的 UE少, 所以连接到 Local eNB的 UE往 往能获得更好的服务盾量,如:获得更高的业务速率,更高盾量的链路。因此,当连接到 Macro eNB的 UE接近 Local eNB控制的小区时,可以切换到 Local eNB以获得 Local eNB提供的服 务; 当 UE远离 Local eNB控制的小区时, 需要切换到 Macro eNB控制的小区, 以保持无线 连接。 由于 Local eNB数量多、 覆盖小, 导致 UE需要频繁在 Macro eNB控制的小区和 Local eNB控制的小区之间切换。 由于 UE的切换频率和次数都大大增加, 从而增加了 UE在进行 切换时发生通信中断的风险。 发明内容
本发明提供一种区分信令来源的方法及用户设备 , 用以解决现有的 E-UTRAN的网络架 构中分层网络结构中, 由于 UE的切换频率和次数都大大增加, 从而增加了 UE在进行切换 时发生通信中断的风险的问题。
本发明实施例提供的具体技术方案如下:
一种区分信令来源的方法, 包括:
用户设备 UE同时与两个基站 eNB存在控制面连接,并接收来自任意 eNB的控制面信令; 所述 UE根据所述控制面信令确定用于指示 eNB的标识相关信息, 并根据所述标识相关 信息确定该控制面信令来源的 e B。
一种区分信令来源的用户设备,所述用户设备 UE同时与两个基站 eNB存在控制面连接, 包括:
接收单元, 用于接收来自任意 eNB的控制面信令;
确定单元, 用于根据所述控制面信令确定用于指示 eNB的标识相关信息, 并根据所述标 识相关信息确定该控制面信令来源的 e B。
基于上述技术方案, 本发明实施例中, 在 UE移动到同时有两个基站覆盖的区域内时, 该 UE同时与两个 eNB建立控制面连接, 并接收来自任意一个 eNB的控制面信令, 并且 UE
根据控制面信令来确定用于指示 eNB的标识相关信息,根据该标识相关信息确定该控制面信 息来源的 eNB, 从而实现用户面与控制面分离的分层网络部署, 在该分层网络部署场景下, 两个 eNB均可以向 UE发送控制面信令,该信令来源区分方法使得 UE能够区分来自不同 eNB 的控制面信令, 为正确配置 eNB对应的无线资源提供了保障, 有效降低了 UE在进行切换时 发生通信中断的风险。 附图说明
图 1为背景技术中 E-UTRAN的网络架构示意图;
图 2为背景技术中 UE与网络之间的用户面协议栈示意图;
图 3为背景技术中 UE与网络之间的控制面协议栈示意图;
图 4为背景技术中 UE的控制面连接示意图;
图 5为背景技术中分层网络部署场景示意图;
图 6为本发明实施例用户面和控制面分离的网络架构;
图 7为本发明实施例用户面和控制面分离的示意图;
图 8为本发明实施例本地基站的控制面协议栈示意图;
图 9为本发明实施例信令来源区分方法的流程示意图;
图 10为本发明实施例中 UE与两个基站连接的示意图;
图 11为本发明实施例另一 UE与两个基站连接的示意图;
图 12为本发明实施例中用户设备的结构示意图;
图 13为本发明实施例另一种用户设备的结构示意图。 具体实施方式
为了降低 UE在 Macro eNB小区和 Local eNB小区之间进行切换的频率, 一种用户面和 控制面分离的网络部署方式被引入。 如附图 6所示, 在该方式下, 当 UE在只有 Macro eNB 小区覆盖的区域, UE的控制面和用户面都连接到 Macro eNB; 当 UE移动到 Macro eNB小区 和 Local eNB小区重叠覆盖区域时, UE用户面全部或者部分承载被转移到 Local eNB, 以获 得更高的业务传输速率; 控制面连接仍然保持在 Macro eNB , 以防止控制面连接切换失败造 成 UE掉话。
其中, Macro eNB是 LTE宏基站; Local eNB是 LTE的 Pico eNB (微基站)或 Home eNB (家庭基站)或 Relay (中继)设备等。
在 UE用户面和控制面分离的情况下, UE同时连接到两个或多个 e B。 如附图 7所示, UE同时与 Macro eNB和 Local eNB相连, 分别获得控制面和用户面连接。 具体可以为, UE
的用户面的部分承载与控制面分离, 或者 UE的用户面的全部承载与控制面分离。
用户面和控制面分离情况下, Macro eNB具有完整的用户面和控制面协议栈, 即与 UE 对等的用户面协议栈和控制面协议栈。 Local eNB为 UE提供用户面数据传输功能, 具有完整 的用户面协议栈。 其中, Local eNB还应具有部分 RRC协议功能, 其控制面协议栈如附图 8 所示, 其中, Sub RRC (子 RRC )层表示只含有部分 RRC功能的协议栈, 例如, 仅包含无线 资源管理功能。
作为一种增强, UE与 Local eNB之间还可能存在广播消息。
该用户面和控制面分离的分层网络架构中, UE同时与两个 eNB存在控制面连接, 两个 eNB均可以向该 UE发送 RRC信令配置相关的无线资源, 为了使得 UE能够区分信令来源的 eNB, 以保证能够正确配置无线资源, 以及返回 RRC消息响应, 本发明实施例提供了一种信 令来源区分方法。
下面结合附图对本发明优选的实施方式进行详细说明。
以下实施例中, 以 UE移动到宏基站和本地基站共同覆盖的区域内为例, 即 UE同时与 宏基站和本地基站建立控制面连接。
如附图 9所示, 本发明实施例提供的信令来源区分方法主要包括以下步骤:
步骤 901: UE同时与两个基站 eNB建立控制面连接, 并接收来自任意 eNB的控制面信 令。
步骤 902: UE根据控制面信令确定用于指示 eNB的标识相关信息, 并根据该标识相关 信息确定该控制面信令来源的 e B。
具体实现中, 标识相关信息包括但不限于: 携带在控制面信令中的承载标识、 信令标识 或 eNB索引标识。
第一种具体实施方式中,标识相关信息为携带在控制面信令中的承载标识, UE确定控制 面信令中携带的承载标识为针对本地基站预定义的专用 SRB的标识时,确定该控制面信令来 源于本地基站; 否则, 确定该控制面信令来源于宏基站。
具体地, 针对该用户面和控制面分离的网络架构, 定义新的信令无线承载 SRB3 , 并将该
SRB3专用于本地基站, 如附图 10所示, 在 UE同时与宏基站和本地基站建立控制面信令连 接时, 宏基站上传输 SRB1和 SRB2, 而本地基站传输 SRB3。
其中, SRB3上传输的控制面信令为与 DRB相关的 RRC消息, 包括但不限于: 用于承载 管理的 RRC消息、 用于无线资源管理的 RRC消息和用于对 SRB配置的 RRC消息中的一种 或一种以上的组合。
例如, 专用于本地基站的 SRB3上传输用于对 DRB的计数值(Count ) 的完整性进行验 证的计数值检测 (Counter check ) 消息和计数值检测响应 ( Counter Check Response ) 消息。
又例如, 用于 DRB相关的无线资源管理的 RRC消息可以是对 UE的物理层、 MAC层、 RLC和 PDCP配置的消息; 用于对 SRB配置的消息可以具体用于是对 DRB的添加、 修改和 删除等操作 , 也可以是用于对 SRB3进行修改操作。
其中, SRB3相关的配置信息可以是 UE和本地基站通过协议预先约定, 也可以是由本地 基站对 UE进行配置。
其中, SRB3上传输的 RRC消息可以是现有协议中规定的 RRC消息, 也可以是 UE与本 地基站约定的预定义的 RRC消息。
具体地, UE在接收任意 eNB发送的 RRC消息后, 获取该 RRC消息中携带的承载标识, 通过判断该承载标识是否为本地基站的专用承载确定该 RRC消息来源的基站,再根据该 RRC 消息对与确定的基站对应的 UE的 MAC层和物理层实体进行配置, 以及对映射到该 MAC层 实体上传输的承载的 PDCP和 RLC参数进行配置。
第二种具体实现方式中,标识相关信息为携带在控制面信令中的信令标识, UE确定控制 面信令中携带的信令标识为针对本地基站预定义的专用 RRC消息的标识时,确定该控制面信 令来源于本地基站; 否则, 确定该控制面信令来源于宏基站。
具体地, 针对该用户面和控制面分离的网络架构, 定义一个或多个新的 RRC消息, 专用 于本地基站, UE与本地基站之间建立 SRB1/SRB2承载后, 如附图 11所示, 在该承载上传输 该专用的 RRC消息。
较佳地, 只有在 UE 同时与宏基站和本地基站建立控制面连接时, 允许本地基站使用该 专用的 RRC消息
其中, 预定义的专用于本地基站的 RCC消息包括但不限于: 用于承载管理的 RRC消息、 用于无线资源管理的 RRC消息和用于对 SRB配置的 RRC消息。
具体地, UE在接收 RRC消息后, 获取该 RRC消息中携带的信令标识, 通过判断该信令 标识是否为预定义的专用于本地基站的信令的标识,确定该 RRC消息来源的 eNB ,再根据该 RRC消息配置与确定的 eNB对应的 UE的 MAC层和物理层实体, 以及配置映射到该 MAC 层实体上传输的 PDCP和 RLC。
例如, 预定义的专用于本地基站的 RRC消息包括: 用于 DRB的添加、 修改和删除等承 载管理操作的 RRC消息; 用于对物理层、 MAC层、 RLC和 PDCP配置等无线资源管理操作 的 RRC消息; 用于对 SRB1/SRB2相关的无线资源管理的 RRC消息。
第三种具体实现方式中, 标识相关信息为 eNB索引标识( eNB index ), 携带 eNB索引标 识的控制面信令可以是 RRC信令、 MAC层信令或物理层信令(如物理层下行调度信令或物 理层上行调度信令)。
具体地, 在现有协议中规定的 RRC消息中定义新的参数: eNB索引标识, 该 eNB索引
标识用于区分不同的 e B。
实际应用中, 该参数的取值可以是枚举型, 例如该参数为 {local, macro} , 其中, local 指代本地基站, macro指代宏基站, 若该参数的取值为 {0,1 }则指代宏基站, 若该参数的取值 为 { 1,0}则指代本地基站; 该参数的取值还可以是布尔型, 例如, 占用 RRC 消息中的一个比 特, 定义该比特为 0值指代宏基站, 该比特为 1指代本地基站。
其中, UE在收到基站侧发送的 RRC消息后, 按照约定从预定位置获取 eNB索引标识, 根据该 eNB索引标识确定该 RRC消息所来源的基站, 再根据该 RRC消息对与确定的基站对 应的 UE的 MAC层和物理层进行配置,以及配置映射到该 MAC层实体上传输的承载的 PDCP 和 RLC参数。
进一步地, UE在发送 RRC消息时, 按照约定在 RRC消息中增加 eNB索引标识, 以确 保发送的 RRC被正确的 eNB接收。
除以上三种情况外, 在 UE包含两套 MAC层和物理层实体, 且每套 MAC层和物理层实 体对应不同的 MAC层索引标识(MAC index )或物理层索引标识( PHY index ) 时, 该标识 相关信息还可以是携带在控制面信令中的 MAC层索引标识或物理层索弓 I标识。
第四种实现方式中, UE根据携带在控制面信令中的 MAC层索引标识或物理层索引标识 确定该控制面信令来源的 eNB , 具体为:
UE根据预设的 MAC层索引标识与 eNB的关联关系确定控制面信令中携带的 MAC层索 引标识对应的 eNB , 并将该 eNB确定为该控制面信令来源的 eNB;
或者,
UE根据预设的物理层索引标识与 eNB的关联关系确定控制面信令中携带的物理层索引 标识对应的 eNB , 将该 eNB确定为该控制面信令来源的 eNB。
第五种实现方式中, UE包含的两套 MAC层和物理层实体对应的物理资源或小区标识不 同, 且每套 MAC层和物理层实体对应不同的基站。 据此, 可建立 MAC层和物理层实体与物 理资源及基站之间的关联关系, 或者, 建立 MAC层和物理层实体与小区标识及基站之间的 关联关系, 将物理资源或小区标识作为用于确定基站的标识相关信息。
具体地, UE确定接收的控制面信令对应的物理资源 (如接收频率), 根据预设 MAC层 和物理层实体与两个基站及物理资源的关联关系确定该控制面信令来源的 eNB;
或者, UE确定接收的控制面信令对应的小区标识, 根据预设的 MAC层和物理层实体与 两个基站及小区标识与的关联关系确定控制面信令来源的 eNB。
具体实施中, 可以将频点与 PCI ( Physical Cell ID, 物理层小区标识)相结合的信息作为 小区标识。
基于同一发明构思, 本发明实施例还提供了一种区分信令来源的用户设备, 该用户设备
同时与两个 eNB存在控制面连接, 该用户设备的具体实施可参见上述方法的实施, 重复之处 不再赘述, 如附图 12所示, 该用户设备主要包括以下单元:
接收单元 1201 , 用于接收来自任意 eNB的控制面信令;
确定单元 1202,用于根据控制面信令确定用于指示 eNB的标识相关信息, 并根据该标识 相关信息确定该控制面信令来源的 e B。
其中,标识相关信息为携带在所述控制面信令中的承载标识、信令标识或 eNB索引标识。 在第一种实现中, 确定单元具体用于:
确定控制面信令中携带的承载标识为针对本地基站预定义的专用信令无线承载 SRB的标 识时, 确定该控制面信令来源于本地基站; 否则, 确定该控制面信令来源于宏基站。
在第二种实现中, 确定单元具体用于:
确定控制面信令中携带的信令标识为针对本地基站预定义的专用 RRC消息的标识时,确 定该控制面信令来源于本地基站; 否则, 确定该控制面信令来源于宏基站。
在第三种实现中, 携带 eNB索引标识的控制面信令可以为 RRC信令、 MAC层信令或物 理层信令。
在第四种实现中, 标识相关信息为携带在控制面信令中的 MAC层索引标识或物理层索 引标识;
确定单元具体用于:
根据预设的 MAC层索引标识与 eNB的关联关系确定控制面信令中携带的 MAC层索引 标识对应的 eNB, 并将该 eNB确定为控制面信令来源的 eNB;
或者,
根据预设的物理层索弓 I标识与 eNB的关联关系确定控制面信令中携带的物理层索弓 I标识 对应的 eNB , 将该 eNB确定为所述控制面信令来源的 eNB。
第五种实现方式中, 确定单元具体用于:
确定控制面信令对应的物理资源, 根据预设物理层和 MAC层实体与基站及物理资源的 关联关系确定控制面信令来源的 eNB, 其中, 各套物理层和 MAC层实体对应的物理资源或 小区标识不同;
或者,
确定控制面信令对应的小区标识, 根据预设的物理层和 MAC层实体与两个基站及小区 标识与的关联关系确定该控制面信令来源的 eNB。
如图 13为本发明实施例另一种用户设备包括:
接收器 1301 , 用于接收来自任意 eNB的控制面信令;
处理器 1302,用于根据控制面信令确定用于指示 eNB的标识相关信息, 并根据该标识相
关信息确定该控制面信令来源的 e B。
其中,标识相关信息为携带在所述控制面信令中的承载标识、信令标识或 eNB索引标识。 在第一种实现中, 处理器 1302具体用于:
确定控制面信令中携带的承载标识为针对本地基站预定义的专用信令无线承载 SRB的标 识时, 确定该控制面信令来源于本地基站; 否则, 确定该控制面信令来源于宏基站。
在第二种实现中, 处理器 1302具体用于:
确定控制面信令中携带的信令标识为针对本地基站预定义的专用 RRC消息的标识时,确 定该控制面信令来源于本地基站; 否则, 确定该控制面信令来源于宏基站。
在第三种实现中, 携带 eNB索引标识的控制面信令可以为 RRC信令、 MAC层信令或物 理层信令。
在第四种实现中, 标识相关信息为携带在控制面信令中的 MAC层索引标识或物理层索 引标识;
处理器 1302具体用于:
根据预设的 MAC层索引标识与 eNB的关联关系确定控制面信令中携带的 MAC层索引 标识对应的 eNB , 并将该 eNB确定为控制面信令来源的 eNB;
或者,
根据预设的物理层索弓 I标识与 eNB的关联关系确定控制面信令中携带的物理层索弓 I标识 对应的 eNB , 将该 eNB确定为所述控制面信令来源的 eNB。
第五种实现方式中, 处理器 1302具体用于:
确定控制面信令对应的物理资源, 根据预设物理层和 MAC层实体与基站及物理资源的 关联关系确定控制面信令来源的 eNB , 其中, 各套物理层和 MAC层实体对应的物理资源或 小区标识不同;
或者,
确定控制面信令对应的小区标识, 根据预设的物理层和 MAC层实体与两个基站及小区 标识与的关联关系确定该控制面信令来源的 eNB。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的 形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机可用存储 介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程序产品的形 式。
本发明是参照根据本发明实施例的方法、设备(系统)、 和计算机程序产品的流程图和 / 或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流程和 /
或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机程序指令 到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个 机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程 图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工 作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装置的制 造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指 定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或 其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他可编 程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多 个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选实施例 以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范 围。 这样, 倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则 本发明也意图包含这些改动和变型在内。
Claims
1、 一种区分信令来源的方法, 其特征在于, 包括:
用户设备 UE同时与两个基站 e B建立控制面连接,并接收来自任意 e B的控制面信令; 所述 UE根据所述控制面信令确定用于指示 eNB的标识相关信息, 并根据所述标识相关 信息确定该控制面信令来源的 e B。
2、 如权利要求 1所述的方法, 其特征在于, 所述标识相关信息为携带在所述控制面信令 中的承载标识、 信令标识或 eNB索引标识。
3、 如权利要求 2所述的方法, 其特征在于, 所述 UE根据所述控制面信令中携带的承载 标识确定该控制面信令来源的 eNB , 具体为:
所述 UE确定所述控制面信令中携带的承载标识为针对本地基站预定义的专用信令无线 承载 SRB的标识时, 确定所述控制面信令来源于本地基站;
否则, 确定所述控制面信令来源于宏基站。
4、 如权利要求 3所述的方法, 其特征在于, 所述专用 SRB上传输的控制面信令为现有 协议中规定的无线资源控制 RRC消息, 或者, 为预定义的 RRC消息。
5、 如权利要求 2所述的方法, 其特征在于, 所述 UE根据所述控制面信令中携带的信令 标识确定该控制面信令来源的 eNB , 具体为:
所述 UE确定所述控制面信令中携带的信令标识为针对本地基站预定义的专用 RRC消息 的标识时, 确定所述控制面信令来源于所述本地基站;
否则, 确定所述控制面信令来源于宏基站。
6、 如权利要求 4或 5所述的方法, 其特征在于, 所述专用 SRB上传输的控制面信令或 所述专用 RRC消息包括: 用于承载管理的 RRC消息、用于无线资源管理的 RRC消息和用于 对 SRB配置的 RRC消息中的一种或一种以上的组合。
7、 如权利要求 2所述的方法, 其特征在于, 携带所述 eNB索引标识的所述控制面信令 为 RRC信令、 媒体接入控制 MAC层信令或物理层信令。
8、 如权利要求 1所述的方法, 其特征在于, 所述标识相关信息为携带在所述控制面信令 中的 MAC层索引标识或物理层索引标识;
所述 UE根据携带在所述控制面信令中的 MAC层索引标识或物理层索弓 I标识确定该控制 面信令来源的 eNB , 包括:
所述 UE根据预设的 MAC层索引标识与 eNB的关联关系确定所述控制面信令中携带的 MAC层索引标识对应的 eNB , 并将该 eNB确定为所述控制面信令来源的 eNB;
或者,
所述 UE根据预设的物理层索弓 I标识与 eNB的关联关系确定所述控制面信令中携带的物 理层索弓 I标识对应的 eNB , 将该 eNB确定为所述控制面信令来源的 eNB。
9、 如权利要求 1所述的方法, 其特征在于, 所述标识相关信息为物理资源或小区标识; 所述 UE根据所述控制面信令确定用于指示 eNB的标识相关信息, 并根据所述标识相关 信息确定该控制面信令来源的 eNB , 包括:
所述 UE确定所述控制面信令对应的物理资源,根据预设的 MAC层和物理层实体与基站 及物理资源的关联关系确定所述控制面信令来源的 eNB;
或者,
所述 UE确定所述控制面信令对应的小区标识,根据预设的 MAC层和物理层实体与基站 及小区标识与的关联关系确定所述控制面信令来源的 eNB。
10、一种区分信令来源的用户设备,其特征在于,所述用户设备 UE同时与两个基站 eNB 存在控制面连接, 包括:
接收单元, 用于接收来自任意 eNB的控制面信令;
确定单元, 用于根据所述控制面信令确定用于指示 eNB的标识相关信息, 并根据所述标 识相关信息确定该控制面信令来源的 e B。
11、 如权利要求 10所述的用户设备, 其特征在于, 所述标识相关信息为携带在所述控制 面信令中的承载标识、 信令标识或 eNB索引标识。
12、 如权利要求 11所述的用户设备, 其特征在于, 所述确定单元具体用于:
确定所述控制面信令中携带的承载标识为针对本地基站预定义的专用信令无线承载 SRB 的标识时, 确定所述控制面信令来源于本地基站;
否则, 确定所述控制面信令来源于宏基站。
13、 如权利要求 11所述的用户设备, 其特征在于, 所述确定单元具体用于:
确定所述控制面信令中携带的信令标识为针对本地基站预定义的专用 RRC 消息的标识 时, 确定所述控制面信令来源于所述本地基站;
否则, 确定所述控制面信令来源于宏基站。
14、 如权利要求 10所述的用户设备, 其特征在于, 所述标识相关信息为携带在所述控制 面信令中的 MAC层索引标识或物理层索引标识;
所述确定单元具体用于:
根据预设的 MAC层索引标识与 eNB的关联关系确定所述控制面信令中携带的 MAC层 索引标识对应的 eNB , 并将该 eNB确定为所述控制面信令来源的 eNB;
或者,
根据预设的物理层索 I标识与 eNB的关联关系确定所述控制面信令中携带的物理层索 I
标识对应的 eNB , 将该 eNB确定为所述控制面信令来源的 eNB。
15、 如权利要求 10所述的用户设备, 其特征在于, 所述确定单元具体用于: 确定所述控制面信令对应的物理资源, 根据预设物理层和 MAC层实体与基站及物理资 源的关联关系确定所述控制面信令来源的 eNB;
或者,
确定所述控制面信令对应的小区标识, 根据预设的物理层和 MAC层实体与基站及小区 标识与的关联关系确定所述控制面信令来源的 eNB。
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| WO2017039283A1 (ko) * | 2015-08-31 | 2017-03-09 | 삼성전자 주식회사 | 서비스들 및 디바이스들에 따라 구성가능한 무선 프로토콜 구현하기 위한 방법 및 장치 |
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| CN106304271B (zh) * | 2015-06-10 | 2019-09-17 | 电信科学技术研究院 | 一种多无线接入网络下提供业务与接受业务的方法及设备 |
| CN108738138B (zh) * | 2017-04-17 | 2021-12-07 | 上海诺基亚贝尔股份有限公司 | 用于无线通信的方法、网络设备和终端设备 |
| CN110892781B (zh) * | 2017-07-27 | 2021-06-08 | 鸿颖创新有限公司 | 新增次节点的方法及相关装置 |
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