WO2016184101A1 - 一种虚拟小区动态的控制面信令的传递方法及系统 - Google Patents

一种虚拟小区动态的控制面信令的传递方法及系统 Download PDF

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WO2016184101A1
WO2016184101A1 PCT/CN2015/098452 CN2015098452W WO2016184101A1 WO 2016184101 A1 WO2016184101 A1 WO 2016184101A1 CN 2015098452 W CN2015098452 W CN 2015098452W WO 2016184101 A1 WO2016184101 A1 WO 2016184101A1
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Prior art keywords
base station
transmitting
control plane
signaling
serving base
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English (en)
French (fr)
Inventor
柯雅珠
程翔
窦建武
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ZTE Corp
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ZTE Corp
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Priority to JP2017559696A priority Critical patent/JP2018520559A/ja
Priority to EP15892475.3A priority patent/EP3297332A4/en
Priority to US15/574,416 priority patent/US20180132246A1/en
Publication of WO2016184101A1 publication Critical patent/WO2016184101A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Leader-follower arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • This application relates to, but is not limited to, wireless communication technologies.
  • the main means to improve network throughput include: increasing the transmission rate of point-to-point links, spreading spectrum resources, and high-density deployment of heterogeneous networks; among them, high-density deployment of heterogeneous networks will support 20 to 30 times of current traffic.
  • UDN high-density network
  • the spatial multiplexing rate of spectrum resources is increased by reducing the coverage area of the cell.
  • the UDN station can provide better link quality, since the coverage area of the small station is small and cannot support the user's fast movement well, a new solution technology is also proposed, such as introducing a virtual cell.
  • the virtual cell is composed of three base stations (BS, Base Station), including one primary serving base station (Master BS) and two secondary serving base stations (Slave BS).
  • BS Base Station
  • Master BS primary serving base station
  • Slave BS secondary serving base stations
  • MS Mobile Station
  • MS Mobile Station
  • control plane signaling is sent to the user at the primary serving base station, but in reality, the primary serving base station is also a small cell, in order to enable control plane signaling to be more reliably received by the user. It is usually necessary to frequently replace the primary serving base station, thereby ensuring that the primary serving base station from the user's perspective is always the base station that has the best channel quality connection with the user. But this is frequent
  • the change of the primary service base station involves frequent synchronization of control plane signaling and user plane data, which is not conducive to the L2 virtualization process.
  • the embodiment of the invention provides a method and a system for transmitting control plane signaling of a virtual cell dynamic, which can solve the problem of frequently replacing the primary serving base station in order to enable the control plane signaling to be reliably received in the related art.
  • An embodiment of the present invention provides a method for transmitting control plane signaling of a virtual cell dynamic, comprising: a transmitting end selecting a base station as a control plane signaling transmission channel in a set of base stations configured as a virtual cell; The selected base station transmits the control plane signaling to the receiving end.
  • the embodiment of the present invention further provides a virtual cell dynamic control plane signaling delivery system, including: a selection module, configured to: select a base station as a control plane signaling transmission channel in a set of base stations configured as a virtual cell; And being configured to: pass the control plane signaling to the receiving end by using the selected base station.
  • a selection module configured to: select a base station as a control plane signaling transmission channel in a set of base stations configured as a virtual cell; And being configured to: pass the control plane signaling to the receiving end by using the selected base station.
  • the embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions for performing the method of any of the above.
  • the transmitting end selects a base station that is a control plane signaling transmission channel in a set of base stations that are configured as a virtual cell, and transmits control plane signaling to the receiving end by using the selected base station.
  • a base station that is a control plane signaling transmission channel in a set of base stations that are configured as a virtual cell
  • transmits control plane signaling to the receiving end by using the selected base station in the transmission process of the control plane signaling, the frequent replacement of the primary serving base station is avoided, and the control plane signaling can be reliably transmitted between the network side and the user, which reduces the frequent change of the primary
  • the serving base station causes a problem of control plane signaling data synchronization and service data synchronization between the source primary serving base station and the target primary serving base station, and reduces backhaul transmission overhead between the base stations.
  • FIG. 1 is a schematic diagram of a virtual cell when an ultra-dense cell is deployed in the related art
  • FIG. 2 is a flowchart of a method for transmitting control plane signaling of a virtual cell according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a user plane protocol stack of signaling data transmitted between a primary serving base station and a secondary serving base station according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of signaling of downlink control plane signaling according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of signaling of downlink control plane signaling according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of signaling of uplink control plane signaling according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of signaling of uplink control plane signaling according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a control system for transmitting control plane signaling of a virtual cell according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for transmitting control plane signaling of a virtual cell according to an embodiment of the present invention. As shown in FIG. 2, the method for transmitting control plane signaling of a virtual cell according to an embodiment of the present invention includes the following steps:
  • Step 11 The transmitting end selects a base station as a control plane signaling transmission channel among the set of base stations constructed as a virtual cell.
  • Step 12 The transmitting end transmits control plane signaling to the receiving end through the selected base station.
  • the transmitting end transmitting the control plane signaling to the receiving end by the selected base station includes: the transmitting end completely transmitting the signaling data of an RRC message to the receiving end by using the selected base station.
  • the transmitting end is the primary serving base station, and the receiving end is the user equipment.
  • the transmitting end is a user equipment
  • the receiving end is a primary serving base station.
  • the set of base stations constructed as virtual cells includes pre-established for transmission and connection.
  • the primary serving base station and the secondary serving base station of the radio bearer receiving the signaling data of the RRC message.
  • the user plane of the primary serving base station has a Packet Data Convergence Protocol (PDCP), a Radio Link Control Protocol (RLC), a Media Access Control (MAC), and a physical layer ( PHY) protocol stack.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control Protocol
  • MAC Media Access Control
  • PHY physical layer
  • the transmitting end is, for example, a master serving base station (Master BS), and the receiving end is, for example, a user equipment.
  • Master BS master serving base station
  • the receiving end is, for example, a user equipment.
  • the transmitting end selects a signaling from the serving base station as a delivery RRC message in a set of base stations configured as a virtual cell.
  • the transmitting end transmits the control plane signaling to the receiving end through the selected base station, and includes: the radio link control layer protocol RLC protocol data unit (PDU, Protocol) of the signaling radio bearer (SRB, Signal Radio Bearer) Data Unit) is passed to the slave base station.
  • PDU radio link control layer protocol RLC protocol data unit
  • SRB Signal Radio Bearer
  • the transmitting end selects an appropriate base station as a base station of the control plane signaling transmission channel, for example, according to the quality of the base station transmission command and the resource utilization situation, among the base station sets constructed as the virtual cell.
  • FIG. 4 is a schematic diagram of signaling of downlink control plane signaling according to an embodiment of the present invention.
  • the three base stations constitute a virtual cell for the user, wherein the base station 1 is a master serving base station (Master-BS), and the base stations 2 and 3 are slave service base stations (Slave-BS), respectively, and are respectively called slaves.
  • - BS1 from serving base station 1
  • Slave-BS2 from serving base station 2).
  • the direction of the arrow in Figure 4 is the flow direction of the downlink control plane signaling.
  • the process of transmitting data of the downlink control plane signaling in the time period from T1 to T2 includes the following steps:
  • Step 101 The Master-BS constructs an RRC message, and selects Slave-BS2 as a base station that transmits the RRC message in the set of base stations that are configured as a virtual cell, where the Radio Resource Control (RRC) protocol of the Master-BS is used.
  • RRC Radio Resource Control
  • Stack to manage RRC messages (including generation, modification, and deletion);
  • Step 102 The RRC layer of the Master-BS transmits the RRC message to the user plane of the Master-BS, and indicates to the target base station and/or the target cell to be delivered to the user plane;
  • Step 103 The user plane of the Master-BS transmits the signaling data PDU to the user of the Slave-BS2. surface;
  • Step 104 After receiving the signaling data, the user plane of the Slave-BS2 is delivered to the user equipment (UE) through the air interface channel;
  • UE user equipment
  • Step 105 After receiving the signaling data, the user plane of the UE is delivered to the RRC layer of the UE through the air interface.
  • FIG. 5 is a schematic diagram of signaling of downlink control plane signaling according to an embodiment of the present invention.
  • the three base stations constitute a virtual cell for the user, wherein the base station 1 is a master serving base station (Master-BS), and the base stations 2 and 3 are slave service base stations (Slave-BS), respectively, and are respectively called slaves.
  • - BS1 from serving base station 1
  • Slave-BS2 from serving base station 2).
  • the direction of the arrow in Figure 5 is the flow of downlink control plane signaling.
  • the process of transmitting data in the downlink control plane signaling in the T3 to T4 time period includes the following steps:
  • Step 201 The Master-BS constructs an RRC message, and selects the Master-BS itself as a base station that transmits the RRC message in the set of base stations configured as a virtual cell, where the RRC message is managed by the RRC protocol stack of the Master-BS (including generation , modification and deletion);
  • Step 202 The RRC layer of the Master-BS transmits the RRC message to the user plane of the Master-BS, and indicates to the target base station and/or the target cell to be delivered to the user plane;
  • Step 203 The user plane of the master-BS transmits the signaling data to the user (UE) through the air interface channel of the base station;
  • Step 204 After receiving the signaling data, the user plane of the UE is delivered to the RRC layer of the UE through the air interface.
  • FIG. 6 is a schematic diagram of signaling of uplink control plane signaling according to an embodiment of the present invention.
  • the three base stations constitute a virtual cell for the user, wherein the base station 1 is a master serving base station (Master-BS), and the base stations 2 and 3 are slave service base stations (Slave-BS), respectively, and are respectively called slaves.
  • - BS1 from serving base station 1
  • Slave-BS2 from serving base station 2).
  • the direction of the arrow in Figure 6 is the flow direction of the uplink control plane signaling.
  • the process of transmitting data of the uplink control plane signaling in the time period from Tu1 to Tu2 includes the following steps:
  • Step 301 The RRC layer of the UE constructs an RRC message, and selects Slave-BS1 as a base station that transmits the RRC message in the set of base stations that are configured as a virtual cell, where the RRC message is managed by the RRC protocol stack of the UE (including generation and modification). And delete);
  • Step 302 The RRC layer of the UE delivers the RRC message to the user plane of the UE, and indicates to the target base station and/or the target cell to be delivered by the user plane;
  • Step 303 After receiving the signaling data PDU, the user plane of the UE passes the air interface to the user plane of the Slave-BS1.
  • Step 304 After receiving the signaling data, the user plane of the Slave-BS1 is delivered to the user plane of the Master-BS.
  • Step 305 After receiving the signaling data, the user plane of the Master-BS is delivered to the RRC layer of the Master-BS.
  • FIG. 7 is a schematic diagram of signaling of uplink control plane signaling according to an embodiment of the present invention.
  • the three base stations constitute a virtual cell for the user, wherein the base station 1 is a master serving base station (Master-BS), and the base stations 2 and 3 are slave service base stations (Slave-BS), respectively, and are respectively called slaves.
  • - BS1 from serving base station 1
  • Slave-BS2 from serving base station 2).
  • the direction of the arrow in Figure 7 is the flow direction of the uplink control plane signaling.
  • the process of transmitting data of the uplink control plane signaling in the time period from Tu3 to Tu4 includes the following steps:
  • Step 401 The RRC layer of the UE constructs an RRC message, and selects a Master-BS as a base station that transmits the RRC message in the set of base stations that are configured as a virtual cell, where the RRC message is managed by the RRC protocol stack of the UE (including generation and modification). And delete);
  • Step 402 The RRC layer of the UE delivers the RRC message to the user plane of the UE, and indicates the target base station and/or the target cell to be delivered to the user plane;
  • Step 403 The user plane of the UE transmits the signaling data PDU to the Master-BS through the air interface;
  • Step 404 After receiving the signaling data, the user plane of the Master-BS is delivered to the RRC layer of the Master-BS.
  • the embodiment of the present invention further provides a virtual cell dynamic control plane signaling delivery system, including: a selection module 81, configured to: select a base station set configured as a virtual cell As a base station of the control plane signaling transmission channel, the transmitting module 82 is configured to: transmit the control plane signaling to the receiving end by using the selected base station.
  • a selection module 81 configured to: select a base station set configured as a virtual cell As a base station of the control plane signaling transmission channel
  • the transmitting module 82 is configured to: transmit the control plane signaling to the receiving end by using the selected base station.
  • the selection module 81 and the transmission module 82 are disposed at the transmitting end.
  • the transmitting end is, for example, a primary serving base station, and correspondingly, the receiving end is, for example, a user equipment.
  • the transmitting end is, for example, a user equipment, and the receiving end is, for example, a primary serving base station.
  • the transmitting module 82 is configured to: completely transmit signaling data of an RRC message to the receiving end by using the selected base station.
  • the base station set constructed as a virtual cell includes a primary serving base station and a secondary serving base station that establish a radio bearer for transmitting and receiving signaling data of an RRC message in advance.
  • the user plane of the primary serving base station has a PDCP, RLC, MAC, and PHY protocol stack.
  • the MAC and PHY protocol stacks exist from the user plane of the serving base station.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the frequent replacement of the primary serving base station is avoided, and the control plane signaling can be reliably transmitted between the network side and the user, which reduces the frequent change of the primary
  • the serving base station causes a problem of control plane signaling data synchronization and service data synchronization between the source primary serving base station and the target primary serving base station, and reduces backhaul transmission overhead between the base stations.

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Abstract

本文公布一种虚拟小区动态的控制面信令的传递方法及系统，包括：发送端在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站；发送端通过选择的基站传递控制面信令至接收端。

Description

一种虚拟小区动态的控制面信令的传递方法及系统 技术领域
本申请涉及但不限于无线通信技术。
背景技术
随着无线通信的用户群体越来越多，使得其应用场景变得越来越广泛，移动互联网、物联网以及其他业务应用的迅猛发展已经成为推动第五代移动通信技术(5G)发展的主要驱动力。因此，高速数据业务以及无处不在的接入需求正呈现出一种爆炸式的增长。根据预测，到2020年，业务量将为目前业务量的1000倍，基于此，需要提升宽带无线接入网的能力，以适应未来用户业务需求。
针对宽带无线接入的需求，目前欧盟、中国、日本、美国等均启动了第五代移动通信系统的需求与关键技术的研究。提升网络吞吐量的主要手段包括：提升点到点链路的传输速率、扩展频谱资源、高密度部署的异构网络；其中高密度部署的异构网络将支撑目前业务量的20至30倍，在高密度部署的网络(UDN，Ultra Dense Network)环境中，通过缩小小区的覆盖面积，提升频谱资源的空间复用率。然而，UDN小站虽然能够提供较好的链路质量，但是，由于小站的覆盖面积很小，无法很好地支持用户的快速移动，因此现在也提出了新的解决技术，比如引入虚拟小区的概念，即以用户为中心，为用户动态构建虚拟小区。如图1所示，虚拟小区由三个基站(BS，Base Station)构成，其中包括一个主服务基站(Master BS)以及两个从服务基站(Slave BS)。一个移动台(MS，Mobile Station)和这三个基站都存在连接，以解决移动过程中用户因为服务基站的改变而引起业务频繁中断，影响用户体验的问题。
由图1可看出，在相关技术中，控制面信令是在主服务基站发送给用户，但实际上主服务基站也是一个小小区，为了使得控制面信令能够更加可靠地被用户所接收，通常需要频繁地更换主服务基站，从而保证从用户角度而言的主服务基站一直是和用户有最好的信道质量连接的基站。但这种频繁 的主服务基站变更会涉及到控制面信令和用户面数据的频繁同步，不利于L2虚拟化过程。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种虚拟小区动态的控制面信令的传递方法及系统，能够解决相关技术中为了使得控制面信令被可靠接收而频繁更换主服务基站的问题。
本发明实施例提供一种虚拟小区动态的控制面信令的传递方法，包括：发送端在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站；所述发送端通过所述选择的基站传递所述控制面信令至接收端。
本发明实施例还提供一种虚拟小区动态的控制面信令的传递系统，包括：选择模块，设置为：在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站；传递模块，设置为：通过所述选择的基站传递所述控制面信令至接收端。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述任一项的方法。
在本发明实施例中，发送端在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站；通过选择的基站传递控制面信令至接收端。通过本发明实施例，在控制面信令的传输过程中，避免了频繁更换主服务基站，同时保证了控制面信令能够可靠地在网络侧和用户之间进行传递，减少了由于频繁变更主服务基站而导致源主服务基站和目标主服务基站之间的控制面信令数据同步和业务数据同步的问题，并减小了基站之间的回程(backhaul)传输开销。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为相关技术中超密集小区部署时的虚拟小区示意图；
图2为本发明实施例提供的虚拟小区动态的控制面信令的传递方法的流程图；
图3为本发明实施例中信令数据在主服务基站和从服务基站传递的用户面协议栈示意图；
图4为本发明一实施例中下行控制面信令的传递示意图；
图5为本发明一实施例中下行控制面信令的传递示意图；
图6为本发明一实施例中上行控制面信令的传递示意图；
图7为本发明一实施例中上行控制面信令的传递示意图；
图8为本发明实施例提供的虚拟小区动态的控制面信令的传递系统的示意图。
本发明的实施方式
以下结合附图对本发明的实施方式进行详细说明。
图2为本发明实施例提供的虚拟小区动态的控制面信令的传递方法的流程图。如图2所示，本发明实施例提供的虚拟小区动态的控制面信令的传递方法包括以下步骤：
步骤11：发送端在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站。
步骤12：发送端通过选择的基站传递控制面信令至接收端。
其中，发送端通过选择的基站传递控制面信令至接收端包括：发送端通过选择的基站完整传递一条RRC消息的信令数据至接收端。
于一实施例中，发送端为主服务基站，接收端为用户设备。
于一实施例中，发送端为用户设备，接收端为主服务基站。
于本实施例中，构建成虚拟小区的基站集合包括预先建立用于传递和接 收RRC消息的信令数据的无线承载的主服务基站和从服务基站。其中，主服务基站的用户面存在分组数据汇聚协议(PDCP，Packet Data Convergence Protocol)、无线链路控制层协议(RLC，Radio Link Control)、介质访问控制(MAC，Media Access Control)及物理层(PHY)协议栈。从服务基站的用户面存在MAC和PHY协议栈。
其中，发送端例如为主服务基站(Master BS)，接收端例如为用户设备，如图3所示，当发送端在构建成虚拟小区的基站集合中选择从服务基站作为传递RRC消息的信令数据的通道时，发送端通过选择的基站传递控制面信令至接收端包括：发送端将信令无线承载(SRB，Signal Radio Bearer)的无线链路控制层协议RLC协议数据单元(PDU，Protocol Data Unit)传递给从服务基站。
此外，于实际应用中，发送端例如根据基站传输指令的质量以及资源利用情况在构建成虚拟小区的基站集合中选择合适的基站作为控制面信令传递通道的基站。
图4为本发明一实施例中下行控制面信令的传递示意图。于本实施例中，由三个基站为用户构成虚拟小区，其中，基站1为主服务基站(Master-BS)，基站2和3分别为从服务基站(Slave-BS)，并分别称为Slave-BS1(从服务基站1)和Slave-BS2(从服务基站2)。图4中箭头方向为下行控制面信令的流向。
如图4所示，下行控制面信令在T1～T2时间段内的传递数据过程包括以下步骤：
步骤101：Master-BS构建RRC消息，并在构建成虚拟小区的基站集合中选择Slave-BS2作为传递该RRC消息的基站，其中，由Master-BS的无线资源控制(RRC，Radio Resource Control)协议栈来管理RRC消息(包括生成、修改和删除)；
步骤102：Master-BS的RRC层把RRC消息传递给Master-BS的用户面，并指示给用户面要传递的目标基站和(或)目标小区；
步骤103：Master-BS的用户面把信令数据PDU传送给Slave-BS2的用户 面；
步骤104：Slave-BS2的用户面收到信令数据后，通过空口通道传递给用户设备(UE)；
步骤105：UE的用户面接收到信令数据后，通过空口传递给UE的RRC层。
图5为本发明一实施例中下行控制面信令的传递示意图。于本实施例中，由三个基站为用户构成虚拟小区，其中，基站1为主服务基站(Master-BS)，基站2和3分别为从服务基站(Slave-BS)，并分别称为Slave-BS1(从服务基站1)和Slave-BS2(从服务基站2)。图5中箭头方向为下行控制面信令的流向。
如图5所示，下行控制面信令在T3～T4时间段内的传递数据过程包括以下步骤：
步骤201：Master-BS构建RRC消息，并在构建成虚拟小区的基站集合中选择Master-BS自身作为传递该RRC消息的基站，其中，由Master-BS的RRC协议栈来管理RRC消息(包括生成、修改和删除)；
步骤202：Master-BS的RRC层把RRC消息传递给Master-BS的用户面，并指示给用户面要传递的目标基站和(或)目标小区；
步骤203：Master-BS的用户面把信令数据通过本基站的空口通道传递给用户(UE)；
步骤204：UE的用户面接收到信令数据后，通过空口传递给UE的RRC层。
图6为本发明一实施例中上行控制面信令的传递示意图。于本实施例中，由三个基站为用户构成虚拟小区，其中，基站1为主服务基站(Master-BS)，基站2和3分别为从服务基站(Slave-BS)，并分别称为Slave-BS1(从服务基站1)和Slave-BS2(从服务基站2)。图6中箭头方向为上行控制面信令的流向。
如图6所示，上行控制面信令在Tu1～Tu2时间段内的传递数据过程包括以下步骤：
步骤301：UE的RRC层构建RRC消息，并在构建成虚拟小区的基站集合中选择Slave-BS1作为传递该RRC消息的基站，其中，由UE的RRC协议栈来管理RRC消息(包括生成、修改和删除)；
步骤302：UE的RRC层把RRC消息传递给UE的用户面，并指示给用户面要传递的目标基站和(或)目标小区；
步骤303：UE的用户面接收到信令数据PDU后，通过空口传递给Slave-BS1的用户面；
步骤304：Slave-BS1的用户面收到信令数据后，传递给Master-BS的用户面；
步骤305：Master-BS的用户面接收到信令数据后，传递给Master-BS的RRC层。
图7为本发明一实施例中上行控制面信令的传递示意图。于本实施例中，由三个基站为用户构成虚拟小区，其中，基站1为主服务基站(Master-BS)，基站2和3分别为从服务基站(Slave-BS)，并分别称为Slave-BS1(从服务基站1)和Slave-BS2(从服务基站2)。图7中箭头方向为上行控制面信令的流向。
如图7所示，上行控制面信令在Tu3～Tu4时间段内的传递数据过程包括以下步骤：
步骤401：UE的RRC层构建RRC消息，并在构建成虚拟小区的基站集合中选择Master-BS作为传递该RRC消息的基站，其中，由UE的RRC协议栈来管理RRC消息(包括生成、修改和删除)；
步骤402：UE的RRC层把RRC消息传递给UE的用户面，并指示给用户面要传递的目标基站和(或)目标小区；
步骤403：UE的用户面把信令数据PDU通过空口传递给Master-BS；
步骤404：Master-BS的用户面接收到信令数据后，传递给Master-BS的RRC层。
如图8所示，本发明实施例还提供一种虚拟小区动态的控制面信令的传递系统，包括：选择模块81，设置为：在构建成虚拟小区的基站集合中选择 作为控制面信令传递通道的基站；传递模块82，设置为：通过所述选择的基站传递所述控制面信令至接收端。
其中，上述选择模块81及传递模块82设置于发送端。发送端例如为主服务基站，对应地，接收端例如为用户设备。或者，发送端例如为用户设备，接收端例如为主服务基站。
其中，传递模块82，是设置为：通过所述选择的基站完整传递一条RRC消息的信令数据至所述接收端。
其中，构建成虚拟小区的基站集合包括预先建立用于传递和接收RRC消息的信令数据的无线承载的主服务基站和从服务基站。其中，主服务基站的用户面存在PDCP、RLC、MAC及PHY协议栈。从服务基站的用户面存在MAC和PHY协议栈。
此外，上述系统的处理过程同上述方法所述，故于此不再赘述。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
通过本发明实施例，在控制面信令的传输过程中，避免了频繁更换主服务基站，同时保证了控制面信令能够可靠地在网络侧和用户之间进行传递，减少了由于频繁变更主服务基站而导致源主服务基站和目标主服务基站之间的控制面信令数据同步和业务数据同步的问题，并减小了基站之间的回程(backhaul)传输开销。

Claims (12)

  1. 一种虚拟小区动态的控制面信令的传递方法，包括：
    发送端在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站；
    所述发送端通过所述选择的基站传递所述控制面信令至接收端。
  2. 如权利要求1所述的方法，其中：所述发送端通过所述选择的基站传递所述控制面信令至接收端包括：所述发送端通过所述选择的基站完整传递一条无线资源控制RRC消息的信令数据至所述接收端。
  3. 如权利要求1所述的方法，其中：所述构建成虚拟小区的基站集合包括预先建立用于传递和接收RRC消息的信令数据的无线承载的主服务基站和从服务基站。
  4. 如权利要求3所述的方法，其中：所述主服务基站的用户面存在分组数据汇聚协议PDCP、无线链路控制层协议RLC、介质访问控制MAC及物理层PHY协议栈，所述从服务基站的用户面存在MAC和PHY协议栈。
  5. 如权利要求1所述的方法，其中：所述发送端为用户设备，所述接收端为主服务基站。
  6. 如权利要求1所述的方法，其中：所述发送端为主服务基站，所述接收端为用户设备。
  7. 如权利要求6所述的方法，其中：当所述发送端在构建成虚拟小区的基站集合中选择从服务基站作为传递RRC消息的信令数据的通道时，所述发送端通过所述选择的基站传递所述控制面信令至接收端包括：所述发送端将信令无线承载SRB的无线链路控制层协议RLC协议数据单元PDU传递给从服务基站。
  8. 一种虚拟小区动态的控制面信令的传递系统，包括：
    选择模块，设置为：在构建成虚拟小区的基站集合中选择作为控制面信令传递通道的基站；
    传递模块，设置为：通过所述选择的基站传递所述控制面信令至接收 端。
  9. 如权利要求8所述的系统，其中：所述传递模块，是设置为：通过所述选择的基站完整传递一条RRC消息的信令数据至所述接收端。
  10. 如权利要求8所述的系统，其中：所述构建成虚拟小区的基站集合包括预先建立用于传递和接收RRC消息的信令数据的无线承载的主服务基站和从服务基站。
  11. 如权利要求10所述的系统，其中：所述主服务基站的用户面存在PDCP、RLC、MAC及PHY协议栈，所述从服务基站的用户面存在MAC和PHY协议栈。
  12. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1-7任一项的方法。
PCT/CN2015/098452 2015-05-15 2015-12-23 一种虚拟小区动态的控制面信令的传递方法及系统 Ceased WO2016184101A1 (zh)

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