WO2014110914A1 - 无线资源管理方法、装置及系统 - Google Patents

无线资源管理方法、装置及系统 Download PDF

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Publication number
WO2014110914A1
WO2014110914A1 PCT/CN2013/084028 CN2013084028W WO2014110914A1 WO 2014110914 A1 WO2014110914 A1 WO 2014110914A1 CN 2013084028 W CN2013084028 W CN 2013084028W WO 2014110914 A1 WO2014110914 A1 WO 2014110914A1
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WO
WIPO (PCT)
Prior art keywords
base station
terminal
network element
information
context information
Prior art date
Application number
PCT/CN2013/084028
Other languages
English (en)
French (fr)
Inventor
黄亚达
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 US14/761,980 priority Critical patent/US9775137B2/en
Priority to EP13871764.0A priority patent/EP2947953A4/en
Publication of WO2014110914A1 publication Critical patent/WO2014110914A1/zh

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Classifications

    • 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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • 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
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • 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
    • H04W88/02—Terminal devices
    • 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

  • Radio resource management method device and system
  • the present invention relates to the field of communications, and in particular to a radio resource management method, apparatus, and system.
  • LTE Long Term Evolution
  • the Long Term Evolution (LTE) system is used as an example to support data transmission with a maximum downlink rate of 100 Mbps in a 20 M bandwidth, and a data transmission rate in a subsequent LTE (LTE Advanced, LTE-A) system. Will be further improved, even reaching 1Gbps.
  • LTE Long Term Evolution
  • LTE-A LTE Advanced, LTE-A
  • LPN Low Power Node
  • Small cell deployment enhancements have been identified by the Third Generation Partnership Projects (3GPP) as one of the most interesting topics in future network development.
  • the deployment of Small cells in the coverage of the macro network is very different from the traditional macro network in terms of transmission, mobility, security, and interference.
  • There are many problems in the process of each base station independently providing services to the terminal. Meet the needs of large data volume and high mobility; and because of actual limitations and historical factors, LPN backhaul selection is also diverse, the characteristics of each interface are different, and macro network There is limited coordination between the two.
  • FIG. 1 is a schematic diagram of a typical LTE/LTE-A network topology according to the related art. As shown in FIG.
  • the terminal UE is in cell 1-1 (Celll-1), cell 2-l (Cell2-l), and cell 2 2 (Cell2-2), cell 3-1 (Cell3-1) moving around, the base station (E-UTRAN NodeB, eNB for short) is the network control node of the cell, and one eNB can control one or more cells, as shown in FIG.
  • Celll-1 is controlled by eNB1, Cell2-1 and Cell2-2 are controlled by base station eNB2, and Cell3-1 is controlled by base station eNB3.
  • the base stations are connected by an X2 interface, and each base station is connected to a core network (Core Network, referred to as CN) through an S1 interface.
  • Core Network Core Network
  • Step S202 A UE sends a measurement report (Measurement Reports) to a source eNB.
  • Step S204 performing a HO decision.
  • the handover decision is made by the source eNB. The judgment may be based on the measurement report sent by the UE, or some measurement information of the source eNB or local load information, so when the handover is initiated is determined according to the implementer's own algorithm.
  • step S206 is performed.
  • Step S206 the source eNB sends a handover request (Handover Request) to the target eNB.
  • the base station where the target cell is located is the target eNB. Since the target eNB does not have the context information of the UE, the source eNB sends the handover request message to the target eNB to configure the necessary configuration information of the terminal at the source eNB. Send to the target eNB.
  • the context information of the UE and the RRC context information are included.
  • the UE context information may include a UE X2/S1 corresponding identifier, a context of an E-UTRAN Radio Access Bearer (E-RAB) (including address information of a terrestrial transmission network, QoS, etc.), security-related information, and a terminal. Information such as ability.
  • E-RAB E-UTRAN Radio Access Bearer
  • the Radio Resource Control (RRC) context is the radio resource configuration of the cell in which the terminal is located, including the Cell Identification Network (Cellular Network Temporary Identifier, C-RNTI), the access layer configuration, and the cell physics. Identification and message integrity integrity code short MAC-I and other information used by RRC re-establishment.
  • access control (Admission Control) is performed.
  • the target eNB configures new context information according to the context information of the source eNB and the resource status of the local base station, for example, the RRC configuration of the UE needs to be modified according to the local radio resource status, for example, modifying a new cell physical identifier, a new C-RNTI, and a random Access dedicated resources, broadcast information of new cells, updated security information, and the like.
  • Step S210 Send a handover request response message (Handover Request Ack).
  • the target eNB generates an RRC reconfiguration message according to the modified configuration, and sends the RRC reconfiguration message to the source eNB through the handover request response message.
  • Step S212 forwarding an RRC reconfiguration message (RRC Recofig).
  • the source eNB receives the RRC reconfiguration message sent by the target eNB, performs integrity protection and encryption processing, and sends the message to the UE.
  • Step S214 the UE performs random access (Random Access).
  • the UE After receiving the RRC reconfiguration message, the UE performs random access in the target cell.
  • Step S216 the UE sends an RRC reconfiguration complete (RRC Conn. Reconf. Completed UE returns the RRC reconfiguration complete message to the target cell after the target cell random access succeeds.
  • Step S220 The MME sends an Update Bearer Request to the Serving Gateway (Step 222).
  • the gateway switches the downlink path (Switch DL path).
  • the serving gateway changes the data path of the core network from the source eNB to the target eNB.
  • Step S224 the serving gateway responds to the Modify Bearer Response.
  • Step S226, the MME sends the target eNB to the target eNB. Returning the link request response (Path Request Ack).
  • Embodiments of the present invention provide a radio resource management method, apparatus, and system to solve at least the above problems.
  • a radio resource management method including: determining, by a first network element, whether a target base station of the terminal is a configured base station, where the configuring the base station is pre-stored with context information of the terminal If the target base station is the configured base station, the first network element separately sends a notification to the configured base station and the terminal to perform communication according to the corresponding context information.
  • the method before determining whether the target base station is the configured base station, the method further includes: determining, by the first network element, the configured base station, and sending the context information to the configured base station; The first network element receives and saves the resource configuration information returned by the configured base station according to the context information, and saves the information of the configured base station to the configured base station list.
  • the method further includes: sending the resource configuration information to the terminal, so that the terminal communicates with the configured base station according to the resource configuration information.
  • the first network element when the first network element is a base station, the first network element sends the configured base station list to a new first network element.
  • a radio resource management method including: configuring a base station to receive a notification that a first network element sends a communication with a terminal, where the configured base station is pre-stored with the a base station of context information of the terminal; the configuration base station, in response to the notification, communicates with the terminal according to the context information.
  • the method before the receiving the notification, the method further includes: configuring the base station to perform resource configuration according to the context information, and sending the resource configuration information to the terminal by using the first network element.
  • communicating with the terminal according to the context information comprises communicating with the terminal according to the resource configuration information.
  • the method further includes at least one of: the configuring the base station releasing the context information of the terminal according to the received release request; the configuring the base station modifying the context information of the terminal and notifying the first network yuan.
  • the method further includes: when the first network element is a base station, the configuring base station stops after receiving a stop communication notification of a new first network element Communicating with the terminal; in a case where the first network element is an independent context manager, the configuration base station stops communicating with the terminal after receiving the stop communication notification of the first network element, where The context manager is coupled to the configured base station and configured to manage the context information.
  • a radio resource management method including: receiving, by a terminal, resource configuration information that is sent by a base station by using a first network element, where the configured base station is pre-stored with the terminal The base station of the context information; after receiving the notification that the first network element sends the communication with the configured base station, the terminal communicates with the configured base station according to the resource configuration information.
  • a radio resource management apparatus located in a first network element, where the apparatus includes: a determining module, configured to determine whether a target base station of the terminal is a configured base station, where the configuration The base station is a base station that pre-stores context information of the terminal; and the sending module is configured to send, according to the corresponding context, to the configured base station and the terminal, respectively, when the target base station is the configured base station Notification of information communication.
  • the sending module is further configured to determine the configured base station, and send the context information to the configured base station; the apparatus further includes a receiving module, configured to receive and save the configured base station according to the context The resource configuration information returned by the information, and the information of the configured base station is saved in the configured base station list.
  • the sending module is further configured to send the resource configuration information to the terminal, so that the terminal communicates with the configured base station according to the resource configuration information.
  • the sending module is further configured to send the configuration base station list to the new first network element if the first network element is a base station.
  • a radio resource management apparatus where the apparatus is located in a configuration base station, where the configuration base station is a base station that prestores context information of the terminal, and the apparatus includes: And a module, configured to receive a notification that the first network element sends communication with the terminal; and the base station communication module is configured to, according to the notification, communicate with the terminal according to the context information.
  • the method further includes a base station configuration module, configured to perform resource configuration according to the context information, and send the resource configuration information to the terminal by using the first network element.
  • the base station communication module is configured to communicate with the terminal according to the resource configuration information.
  • the apparatus further includes at least one of: a release module configured to release context information of the terminal according to the received release request; and a modification module configured to modify context information of the terminal and notify the first One network element.
  • a radio resource management apparatus is provided, which is located at a terminal, and includes: a terminal receiving module, configured to receive resource configuration information that is configured to be sent by a base station by using a first network element, where the configured base station a base station that stores the context information of the terminal in advance; the terminal communication module is configured to: after receiving the notification that the first network element sends the communication with the configured base station, according to the resource configuration information Configure the base station to communicate.
  • a radio resource management system including: a terminal, configured to receive resource configuration information of a configuration base station before the terminal crosses a base station handover, and then switch to the target base station at the terminal And the target base station is the configured base station, and communicates with the configured base station according to the corresponding resource configuration information; the working base station is configured to determine at least one according to a predetermined condition before the terminal crosses the base station to switch And configuring the base station, and sending the context information of the terminal to the configured base station, and then sending the received resource configuration information of the configured base station to the terminal; at least one of the configured base stations is set to be at The terminal receives and saves the context information before switching between the base stations, performs corresponding resource configuration according to the context information, and sends resource configuration information to the working base station, where the configured base station is the target base station.
  • the first network element determines whether the target base station of the terminal is a configured base station, where the configured base station is a base station that pre-stores context information of the terminal, and in the case that the target base station is configured with the base station, the first network element respectively
  • the notification is transmitted to the configuration base station and the terminal according to the corresponding context information, which solves the problem in the related art in the serial handover, thereby achieving the effect of improving the handover success rate.
  • FIG. 1 is a schematic diagram of a typical LTE/LTE-A network topology according to the related art
  • 2 is a flowchart of X2 handover of LTE according to the related art
  • FIG. 3 is a flowchart 1 of a radio resource management method according to an embodiment of the present invention
  • FIG. 4 is a flowchart 2 of a radio resource management method according to an embodiment of the present invention
  • 5 is a third flowchart of a radio resource management method according to an embodiment of the present invention
  • FIG. 6 is a block diagram of a radio resource management apparatus according to an embodiment of the present invention
  • FIG. 7 is a diagram of a radio resource management apparatus according to an embodiment of the present invention
  • FIG. 8 is a block diagram showing the structure of a radio resource management apparatus according to an embodiment of the present invention
  • FIG. 9 is a structural block diagram of a radio resource management system according to an embodiment of the present invention
  • FIG. 10 is a diagram of a radio according to a preferred embodiment of the present invention.
  • FIG. 11a is a network topology diagram 1 of a context manager according to an embodiment of the present invention
  • FIG. 11b is a network topology diagram 2 of a context manager according to an embodiment of the present invention
  • Flowchart 2 of the radio resource management method of the preferred embodiment
  • FIG. 13 is a diagram of configuring a base station list according to an embodiment of the present invention.
  • FIG. 14 is a flow chart of adding a context according to an embodiment of the present invention
  • FIG. 15 is a flow chart of managing a base station according to an embodiment of the present invention
  • FIG. 16 is a flow chart of selecting a working base station according to a preferred embodiment of the present invention.
  • Figure 17 is a flow chart 2 of a working base station selection in accordance with a preferred embodiment of the present invention
  • Figure 18 is a flow diagram of a stop base station transmission in accordance with an embodiment of the present invention.
  • a base station When a base station receives and stores the context information and/or the radio resource configuration information of the terminal, it becomes a configuration base station.
  • the base station that stores the radio resource configuration information also configures the base station because the radio resource configuration information is generated based on the context information.
  • the configuration base station is divided into a working base station and a non-working base station according to whether it directly communicates with the terminal, and the configured base station that directly performs wireless communication with the terminal is a working base station, and the non-working base station and the terminal cannot perform direct wireless communication.
  • the non-working base station can communicate indirectly with the terminal through the working base station.
  • the base station can be added to the configured base station list.
  • the base station newly added to the configured base station set is inactive by default, that is, the non-working base station.
  • the terminal may correspond to more than one non-working base station and at least one working base station, and the multi-connected terminal may communicate with more than one working base station.
  • the first network element is a working base station of the terminal or an independent context manager, where the working base station is a configured base station that directly communicates with the terminal, and the independent context manager is connected to the at least one configured base station, and is set to manage the terminal context information.
  • Embodiment 1 The embodiment of the present invention provides a method for configuring a base station, and FIG. 3 is a flowchart 1 of a method for managing a radio resource according to an embodiment of the present invention. As shown in FIG.
  • the process includes the following steps: Step S302, a first network element Determining whether the target base station of the terminal is a configured base station, where the configuration base station is a base station that pre-stores context information of the terminal. Step S304: If the target base station is a configured base station, the first network element separately sends a notification to the configuration base station and the terminal to perform communication according to the corresponding context information.
  • the serial mobile process of moving the original terminal between the base stations is converted into two independent independent parallel management processes for configuring the management of the base station and the management of the working base station.
  • a base station state that is configured but not in a working state is added, so that the terminal can be pre-configured before the terminal has entered the base station, so that the process of replacing the base station can be shortened, and the corresponding configuration does not need to be deleted immediately after the terminal leaves the base station, so that If the terminal returns to the base station, it does not need to be reconfigured.
  • the signaling number and the signaling size of the mobile process are reduced, thereby speeding up the handover of the base station, reducing the delay of the handover base station, and shortening the service interruption, thereby increasing the throughput during the movement and enhancing the robustness of the mobile.
  • the configuration base station may be a macro base station or a small cell base station.
  • the source base station sends a timer TRELOCprep after transmitting the handover request to the target base station, and after receiving the response of the target base station, it will kill TRELOCprep and start TX2RELOCoverall to wait for the target base station to send the terminal context release, when the two timers have A timeout will enter the exception process, cancel the switch or release the terminal context.
  • the first network element when the first network element receives the response from the configuration base station, it does not initiate the release of the terminal context flow within a specified time, that is, after the new base station responds, it does not need to wait for the TX2RELOCoverall to wait, and the terminal immediately enters the new
  • the cell under the base station can immediately release the terminal context of the base station where the original cell is located, and the terminal contexts of the original working base station and the new base station can be simultaneously saved.
  • the method may further include: determining, by the first network element, the configured base station, and sending the context information to the configuration base station; the first network element receiving and saving the resource configuration information that is configured by the base station to return according to the context information. And save the information of the configured base station to the list of configured base stations.
  • the resource configuration information may include radio resource configuration and/or transmission configuration between base stations, such as transmission network address and the like.
  • the network element where the context manager is located performs the process of configuring the base station in advance before the terminal enters the cell where the base station is located. After the configuration is complete, the network element where the context manager is located can save the resource configuration information returned by the newly configured base station.
  • the method may further include: transmitting the received resource configuration information of the configured base station to the terminal, so that the terminal communicates with the configured base station according to the resource configuration information.
  • the terminal may obtain the resource configuration information of the configured base station in advance, and the network may notify the terminal to communicate with the configured base station by using the resource configuration information after entering the small area under the base station.
  • the first network element is a base station
  • the first network element may further send the configured base station list to the new first network element.
  • FIG. 4 is a flowchart 2 of a radio resource management method according to an embodiment of the present invention. As shown in FIG.
  • Step S402 The base station receives the notification that the first network element sends communication with the terminal, where the base station is configured to store the context information of the terminal in advance.
  • Step S404 The base station is configured to perform communication with the terminal according to the context information, under the indication of the notification.
  • the method may further include: configuring the base station to perform resource configuration according to the context information, and sending the resource configuration information to the terminal by using the first network element.
  • communicating with the terminal according to the context information comprises communicating with the terminal according to the resource configuration information.
  • the method may further include at least one of: configuring the base station to release the context information of the terminal according to the received release request; and configuring the base station to modify the context information of the terminal and notify the first network element.
  • the method further includes: when the first network element is a base station, configuring the base station to stop communicating with the terminal after receiving the stop communication notification of the new first network element;
  • the configuration base station stops communicating with the terminal after receiving the stop communication notification of the first network element, where the context manager is connected to the configuration base station and is set to manage context information.
  • Embodiment 3 The embodiment of the present invention further provides a radio resource management method, and FIG.
  • Step S502 Receiving, by the terminal, resource configuration information that is sent by the base station by using the first network element, where the configuration base station is a base station that pre-stores context information of the terminal; and step S504, the terminal receives the communication with the configuration base station that is sent by the first network element. After the notification, the communication with the configured base station is performed according to the resource configuration information.
  • the working base station and the configuration base station are small cell base stations.
  • Embodiment 4 of the present invention provides a radio resource management apparatus, and FIG.
  • the apparatus is disposed on a first network element, as shown in FIG.
  • the device includes: a determining module 602, configured to determine whether the target base station of the terminal is a configured base station, where the configured base station is a base station that pre-stores context information of the terminal; and the sending module 604 is configured to be configured when the target base station is configured with the base station. And transmitting, to the configured base station and the terminal, a notification for communicating according to the corresponding context information.
  • the sending module 604 is further configured to determine to configure the base station, and send the context information to the configured base station; the apparatus further includes a receiving module 606, configured to receive and save the resource configuration information that the configured base station returns according to the context information, and configure the base station The information is saved to the list of configured base stations.
  • the sending module 604 is further configured to send the received resource configuration information of the configured base station to the terminal to enable the terminal to communicate with the configured base station according to the resource configuration information.
  • the sending module 604 is further configured to send the configured base station list to the new first network element if the first network element is a base station.
  • Embodiment 5 The embodiment of the present invention provides a radio resource management apparatus, and FIG.
  • FIG. 7 is a structural block diagram 2 of a radio resource management apparatus according to an embodiment of the present invention.
  • the apparatus is located in a configuration base station, where the configuration base station is pre-stored with the terminal.
  • a base station of context information as shown in FIG. 7, the apparatus includes: a base station receiving module 702, configured to receive a notification that the first network element sends communication with the terminal; and the base station communication module 704 is configured to, under the indication of the notification, Communicate with the terminal based on the context information.
  • the base station configuration module 706 is further configured to perform resource configuration according to the context information, and send the resource configuration information to the terminal via the first network element.
  • base station communication module 704 is arranged to communicate with the terminal based on resource configuration information.
  • the apparatus further comprises at least one of the following: a release module 708 configured to release context information of the terminal according to the received release request; and a modification module 710 configured to modify context information of the terminal and notify the first network element.
  • a release module 708 configured to release context information of the terminal according to the received release request
  • a modification module 710 configured to modify context information of the terminal and notify the first network element.
  • FIG. 8 is a structural block diagram 3 of a radio resource management apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes: a terminal receiving module 802, which is configured. Configuring, for receiving, the resource configuration information sent by the base station by using the first network element, where the base station is configured to pre-store the context information of the terminal; the terminal communication module 804 is configured to perform the configuration with the configured base station after receiving the first network element.
  • FIG. 9 is a structural block diagram of a radio resource management system according to an embodiment of the present invention. As shown in FIG. 9, the system includes: a terminal 902, configured to be in the terminal.
  • the resource configuration information of the configuration base station is received before the handover of the base station 902, and then, when the terminal 902 switches to the target base station and the target base station is the configuration base station 906, the base station 906 communicates with the configuration base station 906 according to the corresponding resource configuration information; It is configured to determine at least one configuration base station 906 according to a predetermined condition before the terminal 902 switches across the base station, and send the context information of the terminal 902 to the configuration base station 906, and then send the received resource configuration information of the configured base station 906 to the terminal 902.
  • At least one configuration base station 906 is configured to receive and save context information before the terminal 902 switches across the base station, perform corresponding resource configuration according to the context information, and send the resource configuration information to the working base station 904, and then target the certain base station 906.
  • the home base station 906 communicates with the resource configuration information of the terminal 902.
  • FIG. 10 is a flowchart 1 of a method for managing a radio resource according to a preferred embodiment of the present invention. As shown in FIG. 10, the process includes the following steps: Step S1002: Determine a base station to be configured.
  • the first network element determines whether the base station satisfies the configured base station condition, that is, the predetermined condition, or determines whether the configured base station does not satisfy the configured base station condition to determine at least one configured base station.
  • the first network element may be an independent context manager, or may be a working base station of the terminal, and the context manager is attached to the working base station.
  • the context manager is set to manage the context information of the terminal. In the case of attachment to a working base station, it communicates with other base stations through the ports of the base station; in the case of independent network elements, it communicates directly with the respective configured base stations.
  • the configuration of the base station condition depends on the specific implementation algorithm. For example, it may be the base station where the neighboring cell of the current cell of the terminal is located. As shown in FIG.
  • the terminal when the terminal is currently in Cell 2-1, Celll-1 and B Cell 2-2 are adjacent. In the area, the terminal is likely to move into the two cells by moving, and then it can be determined that the base stations eNB1 and eNB2 where Celll-1 and Cell2-2 are located are suitable configuration base stations, wherein the terminal has communicated with the cell Cell2-1. Therefore, eNB2 is already a working base station, and eNB1 can start a subsequent terminal context configuration process as a new configuration base station.
  • the base station can also configure a lower measurement reporting threshold of the terminal. Before the terminal actually needs to switch, the measurement report can be reported in advance, so that the network can determine the neighboring area around the terminal. condition.
  • Step S1004 Configure the base station to perform corresponding resource configuration. After determining that the base station is configured, the context manager sends the context information of the terminal to the configured base station.
  • the base station After receiving the context information of the terminal, the base station saves the context information of the terminal and performs corresponding resource configuration.
  • the configuration base station can perform resource configuration on the terminal under a plurality of cells controlled by the base station.
  • the eNB1 can also be a cell in the vicinity of Celll-1, and the cell 1 is also a cell in the vicinity, and the eNB1 can configure resources of multiple cells such as Celll-1 and Celll-2 for the terminal.
  • Step S1006 Configure the base station to return resource configuration information.
  • the newly configured configuration base station returns resource configuration information corresponding to the terminal.
  • Step S1008 Add the configured base station to the configured base station list.
  • the context manager 1102 may be a module located on the base station 2.
  • the base station 2 When acting as a module in a base station, it is possible to communicate with the base station using an interface between the base stations.
  • Each base station can implement the function of the module. However, for one terminal, only one base station enables the module.
  • the module can be selected on the working base station, and other base stations are controlled by the base station.
  • the context manager module of the new working base station needs to be operated before stopping the communication of the original working base station, and the context manager module of the original working base station is closed, and the operation is accepted. Control of the new working base station.
  • the original working base station may send some saved configuration of the context manager module to the new working base station through the inter-base station interface, where the saving configuration is mainly to configure the data of the base station list (including the working base station and the non-working base station list and the corresponding resources therein). Configuration information), and may also include some Radio Resource Management (RRM) measurement data.
  • RRM Radio Resource Management
  • the working base station that can be called the context management module is the main working base station, and the principle of selecting one of the multiple working base stations as the main working base station can be determined according to the implementation, which is not limited in the embodiment of the present invention.
  • the original master can be used in the same way as the single connection terminal.
  • the resource configuration information of the context manager of the working base station is sent to the new primary working base station through the inter-base station interface, then stops the function of the context manager of the original primary working base station, and starts the context manager function of the new primary working base station.
  • Figure lib is a network topology diagram of a context manager according to an embodiment of the present invention. As shown in Figure lib, the context manager is an independent network element.
  • FIG. 12 is a second flowchart of a radio resource management method according to a preferred embodiment of the present invention. As shown in FIG. 12, the process includes the following steps: Step S1202: Send a context of a terminal to a configuration base station.
  • the working base station where the context manager is located sends the context of the terminal to the configured base station.
  • the context of the terminal can be roughly divided into two categories. One is that the terminal's own information is independent of the host station, such as the service E-RAB attribute of the terminal, and the other is the access layer context, the configuration or resource context assigned to the terminal by the base station.
  • the context of the RRC includes information such as a terminal identifier C-RNTI, an access layer configuration, and a cell physical identifier.
  • the working base station may send all or part of the terminal contexts in the foregoing to the new configured base station, and configured to configure the base station to configure context information when the terminal enters the base station according to the original terminal context.
  • Step S1204 Perform resource configuration according to the context of the terminal.
  • the configuration base station allocates, according to the service E-RAB attribute in the received terminal context, the RRC context of the terminal working on the base station, such as a new C-RNTI, a new access layer L2 configuration, a broadcast configuration of the cell, and the like.
  • Some terminal-specific resources such as a dedicated Physical Uplink Control Channel (PUCCH) resource and a dedicated random access pilot, may be allocated, so that the terminal is within the coverage of the cell under the base station.
  • PUCCH Physical Uplink Control Channel
  • the eNB can communicate with the base station through this configuration.
  • the eNB can configure the radio resource of more than one cell, that is, the RRC resource for the terminal. If the transmission context is configured, the transmission channel between the two base stations, for example, is similar to the GPRS Tunnelling Protocol User Plane (GTP-U) tunnel in the current LTE handover process, and can be pre-established and configured to be transmitted between the base stations.
  • GTP-U GPRS Tunnelling Protocol User Plane
  • the base station to be configured is switched to a non-working configuration base station.
  • Step S1206 Send the resource configuration of the terminal to the terminal via the working base station.
  • the new non-working base station transmits the resource configuration information of the terminal to the working base station.
  • the reconfiguration message can be directly generated to add a new cell configuration, and is sent to the working base station through the inter-base station interface in a container (container), and is sent to the terminal by the working base station.
  • the corresponding resource configuration may also be sent to the working base station, and the working base station generates a reconfiguration message and sends the message to the terminal.
  • the terminal saves the configuration information of the receiving configuration, and the saved cell is initially in an inactive state until the working base station notifies the terminal that communication is possible.
  • 13 is a management flowchart for configuring a base station list according to an embodiment of the present invention. The embodiment is based on the network architecture of FIG. 11a. As shown in FIG.
  • the process includes three sub-processes: an add process, a release process, and Modify the process.
  • the working base station is equivalent to the first network element.
  • the process of configuring the adding context of the base station includes the following steps: Step S1302a, terminal feedback. The terminal sends terminal feedback to the working base station. Step S1304a, configuration decision. The working base station makes configuration decisions based on the terminal feedback. Step S1306a: The working base station sends an add terminal context request to the configuration base station. When it is determined that a new terminal context needs to be added, the working base station sends a terminal context addition request to the configuration base station. Step S1308a, configuring the base station to add a terminal context.
  • Step S1310a Configure the base station to send an add terminal context response.
  • Step S1312a the working base station sends a reconfiguration message. After receiving the context response sent by the new non-working base station, the working base station sends a reconfiguration message to inform the terminal to save the configuration of the configured base station.
  • the process of configuring the release of the base station includes the following steps: Step S1302b, terminal feedback. The terminal sends terminal feedback to the working base station. Step S 1304b, configuration decision. The working base station makes configuration decisions based on the terminal feedback.
  • Step S1306b The working base station sends a release terminal context request to the configuration base station. When it is determined that the terminal context needs to be released, the working base station sends a terminal context release request to the configured base station.
  • Step S1308b Configure the base station to release the terminal context.
  • the base station is configured to release the context and related resources of the relevant terminal.
  • Step S1310b Configure the base station to send a release terminal context response.
  • Step S1312b The working base station sends a reconfiguration message. After receiving the context response sent by the base station, the working base station notifies the terminal to release the configuration of the configured base station.
  • the above process can multiplex the terminal context add message flow, add or release the difference in the message with the flag bit, or use a separate release terminal context message without waiting for the receiving base station to respond.
  • the base station can be deleted by itself.
  • the base station can delete the context of the terminal. If resources are reserved, they are deleted accordingly. After the deletion, the base station can be notified to the working base station, and the corresponding terminal context has been deleted. Finally, the optional working base station may send a message to the terminal to delete the configuration of the corresponding configured base station.
  • the working base station may be notified by the terminal context modification, and the process includes the following steps: Step S1302c: Configure the base station to modify the terminal context. Step S1304c: The base station is configured to send a modified terminal context notification to the working base station.
  • Step S1306c The working base station sends new resource configuration information to the terminal (RRC Re COn Fig).
  • the working base station performs resource configuration according to the received modification context notification, and sends the new resource configuration to the terminal.
  • the embodiment of the present invention further provides a method for adding a context
  • FIG. 14 is a flowchart of adding a context according to an embodiment of the present invention.
  • the context manager is used as an independent network element, that is, the embodiment is based on the diagram lib.
  • the network architecture needs to transmit terminal feedback information between the context manager and the working base station and add a terminal context response or directly reconfigure the message for the RRC.
  • the context manager is equivalent to the first network element. As shown in FIG.
  • Step S1402 terminal feedback.
  • the terminal sends terminal feedback to the working base station.
  • Step S1404 The working base station forwards the terminal to the context manager.
  • Step S1406, the context manager performs configuration decision.
  • the context manager makes configuration decisions based on terminal feedback.
  • Step S1408 The context manager sends an add terminal context request to the configuration base station. When it is determined that a new terminal context needs to be added, the context manager sends a terminal context addition request to the configured base station.
  • Step S1410 Configure the base station to add a terminal context. Configure the base station to save the context of the relevant terminal.
  • Step S1412 The base station is configured to send an add terminal context response to the context manager.
  • Step S1414, the context manager forwards the added terminal context response.
  • Step S1416 The working base station sends a reconfiguration message. After receiving the context response sent by the context manager, the working base station sends a reconfiguration message to inform the terminal to save the configuration of the configured base station.
  • FIG. 15 is a flowchart of management of a working base station according to an embodiment of the present invention. As shown in FIG. 15, the process includes the following steps: Step S1502: A working base station selects a decision. Determine whether it is necessary to enable the new working base station and the terminal to communicate.
  • Step S1504 Determine whether the target base station already exists in the configured base station list. If yes, step S1506 is performed, otherwise, step S1508 is performed. Or you can determine whether the target cell has configured resources. Step S1506, notifying the terminal and the working base station to start communication.
  • FIG. 16 is a flowchart of a working base station management according to a preferred embodiment of the present invention.
  • the base station 1 is a working base station
  • the base station 2 is a configured base station.
  • the working base station is equivalent to the first network.
  • the process includes the following steps: Step S1602, terminal feedback. This step may also not exist.
  • the base station 1 selects the working base station to be triggered by the implementation algorithm.
  • the measurement related information fed back by the terminal may determine whether to enter the coverage of a certain cell, or may be determined according to the measurement of the base station, or the base station may further determine according to the load balancing algorithm, and may select a similar algorithm by using the target cell in the handover, or
  • the embodiment of the present invention does not limit the algorithm because the terminal throughput is increased, and the cell under the new base station needs to be enabled. After a base station is selected for transmission, it needs to determine whether it is already in the configured base station list, that is, whether it is already a non-working base station.
  • the non-working base station is notified to be converted into a working base station to start communication with the terminal.
  • This embodiment assumes that base station 2 is selected and base station 2 is the new working base station, i.e., the target base station. Or determining whether it is necessary to start the communication target cell, whether the base station is configured in the base station set, and determining whether the target cell has performed resource configuration.
  • the base station 1 notifies the base station 2 to start transmission, and the notification message may carry the indication information of the specific cell under the base station 2, and transmit the downlink data to the base station 2 through the inter-base station interface. Step S1606, starting transmission.
  • the base station 1 simultaneously notifies the terminal to start and the cell under the base station 2 starts transmission.
  • the base station 1 notifies the terminal and the base station 2 to start working, and the notification message may carry the indication information of the specific cell under the base station 2.
  • the downlink data is transmitted to the base station 2 through the inter-base station interface.
  • the terminal starts receiving data in the cell under the base station 2. Since the notification message to the terminal has a transmission delay and a processing delay, the base station 2 can wait for T milliseconds before transmitting the data to the terminal, and the T can perform configuration or protocol agreement, and transmit the uplink data to the inter-base station interface.
  • the terminal needs to perform random access in the cell of the base station. After the random access completes synchronization, the response message is sent as described above or waiting for the base station to start and the terminal to transmit.
  • the base station 1 notifies the terminal base station 2 to start operation, and the base station 2 does not perform a fixed T millisecond waiting for the terminal to process the notification, but waits for the terminal to perform feedback on the base station 2 before starting data transmission. That is, regardless of whether the terminal is uplink-synchronized with the base station 2, when the terminal receives the notification from the base station 1, the terminal performs random access in the cell designated by the base station 2.
  • Step S1610 The terminal sends a feedback response.
  • the terminal sends a feedback response to the base station 2.
  • the terminal can use the dedicated random access or the terminal to send its own identification information such as the identification information pre-assigned to the terminal, such as C-RNTI, for the base station 2 to identify the connection of the terminal, and use the configuration information corresponding to the terminal.
  • Step S1612 transmission.
  • the base station 2 starts transmitting with the terminal, transmits the downlink data from the base station 1 through the inter-base station interface to the terminal, and transmits the uplink data from the terminal to the base station 1 through the inter-base station interface. If it is necessary to stop the communication between the base station 1 and the terminal, the data flow of the core network and the base station 1 needs to be switched to the base station 2 through the path switch process.
  • FIG. 17 is a flowchart of a working base station selection according to a preferred embodiment of the present invention. As shown in FIG. 17, the base station 1 is a working base station, and the base station 2 is a base station.
  • the process includes the following steps: Step S1702: Terminal feedback.
  • Step S1704 The working base station forwards the terminal to the context manager.
  • Step S1706 the context manager selects the working base station.
  • the context manager selects the working base station to be triggered by the implemented algorithm.
  • the measurement related information fed back by the terminal may be used to determine whether to enter the coverage of a certain cell, or may be determined according to the measurement of the working base station, or may be determined according to a load balancing algorithm, etc., and the target cell may be selected in the handover to select a similar algorithm.
  • the embodiment does not make an algorithmic limitation. After a base station is selected for transmission, it needs to determine whether it is already in the configured base station list. If it is, it indicates that the base station already has the context of the terminal, and can directly notify the configured base station to convert to the working base station to start communication with the terminal. . This embodiment assumes that base station 2 is selected and base station 2 is a new working base station. Step S1708, starting transmission.
  • the context manager notifies the terminal base station 2 via the base station 1 to start operation.
  • the terminal starts receiving data in the cell under base station 2. Since the message arriving at the terminal has a transmission delay and a processing delay, the base station 2 can send the data to the terminal after waiting for T milliseconds, and the T can perform the configuration of the live protocol. Step S1710, random access. If the terminal and the base station 2 are not synchronized, the terminal needs to perform random access in the cell of the base station. After the random access completes synchronization, the response message is sent as described above or waiting for the base station to start and the terminal transmits.
  • FIG. 18 is a flowchart of a stop base station transmission according to an embodiment of the present invention. As shown in FIG.
  • the base station 1 is a working base station, and the base station 2 is a base station.
  • the process includes the following steps: Step S1802, terminal feedback .
  • the working base station selection judgment may be triggered by an implemented algorithm, for example, a multi-connection terminal, which may stop transmission of the working base station when it is determined that there are multiple working base stations at the same time to determine which base stations are not suitable for transmission.
  • Step S1806 the transmission is stopped.
  • the base station 1 transmits a transmission stop message to the base station 2, and the base station 2 stops the transmission. If there is still unprocessed data in the buffer of the base station 2, it is transmitted through the inter-base station channel to the working base station still in operation, such as the base station 1.
  • the base station 1 transmits a message to inform the terminal to stop receiving data at the base station 2.
  • Embodiment 15 For a single-connection terminal, since only one working base station can transmit at a time, the base station 2 transmission can be started first and then the base station 1 transmission can be stopped. Or, for the signaling between the base stations, the two processes may be combined, and when the new working base station is started, the transmission of the old action base station is stopped.
  • the working base station starts to configure the transmission of the base station, it stops its own transmission.
  • the terminal receives the start transmission notification, it stops the transmission of the base station 1 and starts transmission with the base station 2.
  • the base station 1 transmits unprocessed data in the buffer to the base station 2 through the inter-base station channel.
  • the single-connected terminal can only transmit to one working base station at the same time, for the data flow from the base station to the core network, after completing the above process, the terminal communicates with the new working base station, that is, the base station 2, and the base station 2 passes the data stream through the original work.
  • the base station, that is, the base station 1 forwards to the core network, keeps the original S1 connection unchanged, and the data is transmitted to the base station 1 through the inter-base station interface.
  • the base station 2 uses the original path switch (Path Switch) process, sends the Path Switch to the core network, and switches the data channel between the base station 1 and the core network to the base station 2, and the base station 1 will not The transmitted data packet is transmitted back to the base station 2 through the transmission channel between the base stations.
  • the terminal has multiple connection transmission capabilities, that is, it can be transmitted simultaneously with more than one base station. In the above process, communication can be performed simultaneously with the base station 1 and the base station 2, that is, when the terminal randomly accesses or transmits the new base station 2, The transmission with base station 1 can still be maintained.
  • the base station 1 is an anchor point of the S1 connection, and the data sent by the core network is shunted and transmitted to the base station 2 through the connection between the base station 1 and the terminal and the transmission channel between the base stations, and the connection between the base station 2 and the terminal is transmitted to the terminal, and also aggregates.
  • the data coming from the base station 1 and the base station 2 is sent to the core network.
  • the connection anchor of S1 can also be modified to base station 2 by the path switch flow. If the LTE/LTE-A compatible terminal is to be considered, that is, if the terminal is not modified, if the target base station is added to the configured base station set in advance before the terminal reaches the handover area, the source base station is the working base station, and the foregoing process can be performed.
  • the preparation for configuring the base station set is completed.
  • the RRC reconfiguration is not sent to the terminal first, but local temporary storage is performed.
  • the RRC reconfiguration instead of starting the transmission of the message is sent to the terminal, and the terminal can perform the handover according to the original LTE procedure, and the terminal feedback is The RRC reconfiguration is completed.
  • the previous process is not affected by the entire process.
  • the target base station has completed the handover request process in advance.
  • the entire handover process only needs to perform air interface reconfiguration. Therefore, the handover delay can be shortened and reduced.
  • the original working base station finds that the target base station is not in the set base station set, or the target cell is no longer configured in the cell in which the base station configures the resource, the original working base station may switch according to the original LTE handover procedure. It can be seen from the above description that the embodiment of the present invention achieves the following technical effects: The handover success rate is improved, and the service interruption is short, the handover delay is small, and the signaling overhead is small. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • a radio resource management method, apparatus, and system provided by an embodiment of the present invention have the following beneficial effects: Improved handover success rate, short service interruption, small handover delay, and low signaling overhead .

Abstract

本发明提供了一种无线资源管理方法、装置及系统，该方法包括：第一网元判断终端的目标基站是否是配置基站，其中，配置基站是预先保存有终端的上下文信息的基站；在目标基站是配置基站的情况下，第一网元向配置基站和终端分别发送根据相应的上下文信息进行通信的通知。本发明解决了相关技术中串行切换存在的问题，具有提高切换成功率的效果。

Description

无线资源管理方法、 装置及系统
技术领域 本发明涉及通信领域， 具体而言， 涉及一种无线资源管理方法、 装置及系统。 背景技术 随着无线通信技术和协议标准的不断演进， 移动分组业务经历了巨大的发展， 单 个终端的数据吞吐能力不断提升。 以长期演进 （Long Term Evolution, 简称 LTE) 系 统为例， 在 20M带宽内可以支持下行最大速率为 100Mbps的数据传输， 后续的增强 LTE (LTE Advanced, 简称 LTE- A) 系统中， 数据的传输速率将进一步提升， 甚至可 以达到 lGbps。 终端数据业务量膨胀式的增长， 使得移动网络的服务能力和部署策略都面临着巨 大的压力与挑战。 运营商一方面需要增强现有的网络部署和通讯技术， 另一方面希望 加快新技术的推广和网络拓展， 从而达到快速提升网络性能的目的。 而移动通信系统 发展至今， 仅通过对宏网络（Macro networks)进行增强以提供经济、 灵活、 高能力的 服务变得越来越困难， 因此， 部署低功率节点 （Low power Node, 简称 LPN) 提供小 小区 （Small cell) 覆盖的网络策略成为了一个极具吸引力的解决方案， 尤其是在数据 传输量巨大的室内 /室外热点地区需要为用户提供良好的用户体验这一方面。
Small cell 部署方面的增强已经被第三代伙伴组织计划 （Third Generation Partnership Projects, 简称 3GPP) 确认为未来网络发展中最令人感兴趣的课题之一。 在宏网络的覆盖范围中部署 Small cell, 其传输、 移动、 安全和干扰等方面都与传统的 宏网络有很大不同， 在各基站独立为终端提供服务的过程中既存在诸多问题， 又无法 满足大数据量及高移动性的业务需求； 而因为实际限制和历史因素等原因， LPN后向 链路 （Backhaul) 的选择也是多种多样的， 各接口的特性均有所不同， 与宏网络间的 协调交互有限。因此，在部署了 Small cell的场景中，如何利用其特点与宏基站（Macro eNB， 简称 MeNB) 间保持良好的协作机制， 从而为用户终端 （User Equipment, 简称 UE)提供优化的通讯服务， 以满足更高带宽、 更好性能、 更低成本、 更安全且适用多 种后向链路的需求， 是 LTE通讯系统未来发展中亟需解决的一个重要议题。
Small Cell的大量部署同样也产生了很多新的问题， 如大量 small cell的部署会导 致终端在 Small cell和宏小区 （Macro cell) , Small cell和 Small cell之间频繁的移动性 过程。 而频繁切换会对核心网和基站间有较多的信令冲击， 同时由于切换的频繁也会 导致业务中断频繁， 终端掉话的可能性增加。 图 1是根据相关技术的典型的 LTE/LTE-A网络拓扑示意图， 如图 1所示， 终端 UE在小区 1-1 (Celll-1 )、 小区 2-l(Cell2-l)、 小区 2-2 (Cell2-2)、 小区 3-1 (Cell3-1)周 围移动， 基站 (E-UTRAN NodeB， 简称 eNB)是小区的网络控制节点， 一个 eNB可以控 制一个或多个小区， 如图 1中所示， Celll-1由 eNBl控制， Cell2-1和 Cell2-2由基站 eNB2控制， Cell3-1由基站 eNB3控制。基站之间由 X2接口连接，各基站与核心网 (Core Network, 简称 CN) 之间通过 S1接口连接。 图 2是根据相关技术的 LTE的 X2切换流程图， 如图 2所示， 该流程包括以下步 骤： 步骤 S202， UE向源 eNB发送测量报告 （Measurement Reports )。 步骤 S204， 进行切换决策 （HO decision)。 切换决策是由源 eNB判断。判断依据可以是根据 UE发送的测量报告，或者源 eNB 自己的一些测量信息或者本地负载信息来进行判决， 所以何时发起切换是根据实现者 自身的算法决定。 在判决发起切换后， 执行步骤 S206。 步骤 S206， 源 eNB向目标 eNB发送切换请求 （Handover Request )。
一旦判决需要进行跨基站的切换后， 目标小区所在的基站为目标 eNB， 由于目标 eNB并没有 UE的上下文信息，源 eNB通过向目标 eNB发送切换请求消息，将终端的 在源 eNB的必要配置信息发送给目标 eNB。 其中， 包括 UE的上下文信息和 RRC上 下文信息。 UE上下文信息可以包括 UE X2/S1对应标识、 无线接入承载 （E-UTRAN Radio Access Bearer, 简称 E-RAB) 的上下文 （包括地面传输网络的地址信息、 QoS 等）、 安全相关的信息以及终端能力等信息。 无线资源控制 （Radio Resource Control, 简称 RRC) 上下文为终端所在小区的无线资源配置， 包括 UE标识小区无线网络临时 ID (Cell Radio Network Temporary Identifier, 简称为 C-RNTI)、 接入层配置、 小区物 理标识和 RRC重建使用的消息完整性短鉴别码 short MAC-I等信息。 步骤 S208， 进行接入控制 (Admission Control)。 目标 eNB根据源 eNB的上下文信息以及本基站的资源状态配置新的上下文信息， 如需要根据本地的无线资源状况修改 UE的 RRC配置，比如，修改新的小区物理标识、 新的 C-RNTI、 随机接入专用资源、 新小区的广播信息、 更新的安全信息等。 步骤 S210， 发送切换请求响应消息 (Handover Request Ack)。 目标 eNB根据修改的配置生成 RRC重配置消息， 并通过切换请求响应消息发送 给源 eNB。 步骤 S212， 转发 RRC重配置消息 （RRC Recofig)。 源 eNB接收到目标 eNB发送的 RRC重配置消息， 对其进行完整性保护和加密处 理后发送给 UE。 步骤 S214， UE进行随机接入 (Random Access)。
UE接收到 RRC重配置消息后， 在目标小区进行随机接入。 步骤 S216， UE发送 RRC重配置完成 （RRC Conn. Reconf. Completed UE在目标小区随机接入成功后， 返回 RRC重配置完成消息到目标小区。 步骤 S218， 目标 eNB发送链路切换请求 (Path Switch Request)。 目标 eNB随后向移动性管理实体 （Mobile Management Entity, 简称为 MME) 发 送 Path Switch Request消息。 步骤 S220， MME向服务网关 (Serving Gateway)发送更新承载请求（ Modify Bearer Request )。 步骤 S222， 服务网关切换下行链路 （ Switch DL path )。 服务网关将核心网的数据路径从源 eNB改为目标 eNB。 步骤 S224， 服务网关响应更新承载请求 （Modify Bearer Response )。 歩骤 S226， MME向目标 eNB返回链路切换响应 （Path Request Ack)。 步骤 S228， 目标 eNB向源 eNB发送释放 UE上下文（UE Context Release)消息。 步骤 S230， 源 eNB释放资源 (Release Resource)。 源 eNB释放 UE上下文和相关的专用资源。 由上述 LTE系统切换的流程可见， 整个切换是一个串行的过程， 即首先需要决定 目标 eNB， 然后源 eNB和目标 eNB完成 UE的上下文准备， 接着 UE完成目标 eNB 的接入， 最后核心网进行路径切换。 由于这种串行的特性， 导致中间的任何一步失败 都会导致整个流程失败， 任何一个步骤的时延都会导致整个系统的时延， 并且每次切 换即使在相同的两个小区间来回切换也需要走完全部的流程。 在 Small Cell大量部署时， 针对相关技术中切换时存在的切换失败率高的问题， 目前尚未提出有效的解决方案。 发明内容 本发明实施例提供了一种无线资源管理方法、装置及系统， 以至少解决上述问题。 根据本发明实施例的一个方面， 提供了一种无线资源管理方法， 包括： 第一网元 判断终端的目标基站是否是配置基站， 其中， 所述配置基站是预先保存有所述终端的 上下文信息的基站； 在所述目标基站是所述配置基站的情况下， 所述第一网元分别向 所述配置基站和所述终端发送根据相应的所述上下文信息进行通信的通知。 优选地， 在判断所述目标基站是否是所述配置基站之前， 所述方法还包括： 所述 第一网元确定所述配置基站， 并将所述上下文信息发送给所述配置基站； 所述第一网 元接收并保存所述配置基站根据所述上下文信息返回的资源配置信息， 并将所述配置 基站的信息保存到配置基站列表中。 优选地， 在接收到所述资源配置信息后， 所述方法还包括： 将所述资源配置信息 发送给所述终端以使所述终端根据所述资源配置信息与所述配置基站进行通信。 优选地， 在所述第一网元是基站的情况下， 所述第一网元将所述配置基站列表发 送给新的第一网元。 根据本发明实施例的另一方面， 提供了一种无线资源管理方法， 包括： 配置基站 接收到第一网元发送的与终端进行通信的通知， 其中， 所述配置基站是预先保存有所 述终端的上下文信息的基站； 所述配置基站在所述通知的指示下， 根据所述上下文信 息与所述终端进行通信。 优选地， 在接收到所述通知之前， 所述方法还包括： 所述配置基站根据所述上下 文信息进行资源配置， 并将资源配置信息经由所述第一网元发送给所述终端。 优选地， 根据所述上下文信息与所述终端进行通信包括根据所述资源配置信息与 所述终端进行通信。 优选地， 所述方法还包括以下至少之一： 所述配置基站根据接收到的释放请求， 释放所述终端的上下文信息； 所述配置基站修改所述终端的上下文信息并通知所述第 一网元。 优选地， 在与所述终端进行通信之后， 所述方法还包括： 在所述第一网元是基站 的情况下， 所述配置基站在接收到新的第一网元的停止通信通知后停止与所述终端通 信； 在所述第一网元是独立的上下文管理器的情况下， 所述配置基站在接收到所述第 一网元的停止通信通知后停止与所述终端通信， 其中， 所述上下文管理器与所述配置 基站相连， 设置为管理所述上下文信息。 根据本发明实施例的另一方面， 提供了一种无线资源管理方法， 包括： 终端接收 到配置基站经由第一网元发送的资源配置信息， 其中， 所述配置基站是预先保存有所 述终端的上下文信息的基站； 所述终端在接收到所述第一网元发送的与所述配置基站 进行通信的通知后， 根据所述资源配置信息与所述配置基站进行通信。 根据本发明实施例的另一方面， 提供了一种无线资源管理装置， 位于第一网元， 所述装置包括： 判断模块， 设置为判断终端的目标基站是否是配置基站， 其中， 所述 配置基站是预先保存有所述终端的上下文信息的基站； 发送模块， 设置为在所述目标 基站是所述配置基站的情况下， 分别向所述配置基站和所述终端发送根据相应的所述 上下文信息进行通信的通知。 优选地， 所述发送模块还设置为确定所述配置基站， 并将所述上下文信息发送给 所述配置基站； 所述装置还包括接收模块， 设置为接收并保存所述配置基站根据所述 上下文信息返回的资源配置信息， 并将所述配置基站的信息保存到配置基站列表中。 优选地， 所述发送模块还设置为将所述资源配置信息发送给所述终端以使所述终 端根据所述资源配置信息与所述配置基站进行通信。 优选地， 所述发送模块还设置为在所述第一网元是基站的情况下， 将所述配置基 站列表发送给新的第一网元。 根据本发明实施例的另一方面， 提供了一种无线资源管理装置， 所述装置位于配 置基站， 其中， 所述配置基站是预先保存有终端的上下文信息的基站， 所述装置包括: 基站接收模块， 设置为接收第一网元发送的与所述终端进行通信的通知； 基站通信模 块， 设置为在所述通知的指示下， 根据所述上下文信息与所述终端进行通信。 优选地， 还包括基站配置模块， 设置为根据所述上下文信息进行资源配置， 并将 资源配置信息经由所述第一网元发送给所述终端。 优选地， 所述基站通信模块设置为根据所述资源配置信息与所述终端进行通信。 优选地， 所述装置还包括以下至少之一： 释放模块， 设置为根据接收到的释放请 求， 释放所述终端的上下文信息； 修改模块， 设置为修改所述终端的上下文信息并通 知所述第一网元。 根据本发明实施例的另一方面， 提供了一种无线资源管理装置， 位于终端， 包括: 终端接收模块， 设置为接收配置基站经由第一网元发送的资源配置信息， 其中， 所述 配置基站是预先保存有所述终端的上下文信息的基站； 终端通信模块， 设置为在接收 到所述第一网元发送的与所述配置基站进行通信的通知后， 根据所述资源配置信息与 所述配置基站进行通信。 根据本发明实施例的另一方面， 提供了一种无线资源管理系统， 包括： 终端， 设 置为在所述终端跨基站切换之前接收配置基站的资源配置信息， 然后在所述终端切换 到目标基站且所述目标基站是所述配置基站的情况下， 根据相应的所述资源配置信息 与所述配置基站进行通信； 所述工作基站， 设置为在终端跨基站切换之前， 根据预定 条件确定至少一个所述配置基站， 并将所述终端的上下文信息发送给所述配置基站， 然后将所接收到的所述配置基站的资源配置信息发送给所述终端； 至少一个所述配置 基站， 设置为在所述终端跨基站切换之前接收并保存所述上下文信息， 根据所述上下 文信息进行相应的资源配置， 并将资源配置信息发送给所述工作基站， 然后在所述配 置基站是所述目标基站的情况下， 根据所述资源配置信息与所述终端进行通信。 通过本发明实施例， 第一网元判断终端的目标基站是否是配置基站， 其中， 配置 基站是预先保存有终端的上下文信息的基站,在目标基站是配置基站的情况下， 第一网 元分别向配置基站和终端发送根据相应的上下文信息进行通信的通知， 解决了相关技 术中串行切换时存在的问题， 进而达到了提高切换成功率的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部分， 本发 明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中- 图 1是根据相关技术的典型的 LTE/LTE-A网络拓扑示意图; 图 2是根据相关技术的 LTE的 X2切换流程图； 图 3是根据本发明实施例的无线资源管理方法的流程图一； 图 4是根据本发明实施例的无线资源管理方法的流程图二； 图 5是根据本发明实施例的无线资源管理方法的流程图三； 图 6是根据本发明实施例的无线资源管理装置的结构框图一； 图 7是根据本发明实施例的无线资源管理装置的结构框图二； 图 8是根据本发明实施例的无线资源管理装置的结构框图三； 图 9是根据本发明实施例的无线资源管理系统的结构框图； 图 10是根据本发明优选实施例的无线资源管理方法的流程图一； 图 11a是根据本发明实施例的上下文管理器的网络拓扑图一； 图 lib是根据本发明实施例的上下文管理器的网络拓图二； 图 12是根据本发明优选实施例的无线资源管理方法的流程图二； 图 13是根据本发明实施例的配置基站列表的管理流程图； 图 14是根据本发明实施例的添加上下文的流程图； 图 15是根据本发明实施例的工作基站管理流程图； 图 16是根据本发明优选实施例的工作基站选择流程图一； 图 17是根据本发明优选实施例的工作基站选择流程图二； 图 18是根据本发明实施例的停止工作基站传输的流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不冲突的 情况下， 本申请中的实施例及实施例中的特征可以相互组合。 为了方便描述， 以下实施例中的配置基站是预先保存有终端上下文信息的基站， 具体地说配置基站是在终端进行切换之前便预先保存有终端上下文信息的基站。 当一 个基站接收并保存了终端的上下文信息和 /或无线资源配置信息后便成为配置基站， 这 里之所以保存无线资源配置信息的基站也是配置基站是由于无线资源配置信息是根据 上下文信息生成的。 配置基站中按是否与终端进行直接通讯又分为工作基站和非工作 基站， 与终端直接进行无线通信的配置基站为工作基站， 非工作基站和终端则无法进 行直接的无线通讯。 非工作基站可以通过工作基站与终端间接进行通信。 配置基站通 常可以加入到配置基站列表中， 新加入到配置基站集的基站默认处于非工作状态， 即 是非工作基站。 终端可以对应一个以上的非工作基站和至少一个工作基站， 多连接能 力的终端可以和一个以上的工作基站通信。 第一网元是终端的工作基站或者是独立的 上下文管理器， 其中， 工作基站是与终端直接进行通信的配置基站， 独立的上下文管 理器与至少一个配置基站相连， 设置为管理终端的上下文信息。 实施例一 本发明实施例提供了配置基站方法， 图 3是根据本发明实施例的无线资源管理方 法的流程图一， 如图 3所示， 该流程包括以下步骤： 步骤 S302， 第一网元判断终端的目标基站是否是配置基站， 其中， 配置基站是预 先保存有终端的上下文信息的基站。 步骤 S304， 在目标基站是配置基站的情况下， 第一网元分别向配置基站和终端发 送根据相应的上下文信息进行通信的通知。 在本发明实施例中， 将原有的终端在基站间移动的串行移动过程转换为配置基站 管理和工作基站的管理两个相对的独立的并行管理过程。 此外新增了一种配置但非工 作状态的基站状态， 使得当终端还未进入基站前就可以预先配置， 从而可以缩短更换 基站的流程， 同时当终端离开基站后不需要立刻删除对应配置， 使得终端如果再回到 该基站时， 不需要重新配置。通过这样的方式达到减少移动过程的信令数和信令大小， 从而加快切换基站的速度、 减少切换基站时延和缩短业务中断， 进而增加了移动时的 吞吐量、 增强了移动的鲁棒性。 配置基站可以是宏基站， 也可以是小小区基站。 相关技术中 Small Cell的大量部 署会导致在 Small cell和 Marco cell之间频繁的移动性过程，而频繁切换会对核心网和 基站间有较多的信令冲击。 通过本发明实施例， 可以解决上述问题。 当然， 在传统的 移动性场景也可以具有如加强切换可靠性， 减少切换中断， 提高业务吞吐量， 减少信 令开销， 降低切换延时等方面有同样的益处。 另夕卜，相关技术中源基站向目标基站发送切换请求后会启动定时器 TRELOCprep, 收到目标基站的响应后会杀死 TRELOCprep启动 TX2RELOCoverall等待目标基站发送 终端上下文释放， 当这两个定时器有一个超时， 则会进入异常流程， 进行切换取消或 终端上下文释放。 而本发明实施例的过程， 当第一网元收到配置基站的响应后不会在 指定的时间内发起释放终端上下文流程， 即， 在新基站响应后不需要类似 TX2RELOCoverall等待， 终端立即进入新基站下的小区， 并可以立即释放原小区所在 基站的终端上下文， 同时， 原工作基站和新基站的终端上下文可以同时保存。 在判断目标基站是否是配置基站之前， 该方法还可以包括： 第一网元确定配置基 站， 并将上下文信息发送给配置基站； 第一网元接收并保存配置基站根据上下文信息 返回的资源配置信息， 并将配置基站的信息保存到配置基站列表中。 资源配置信息可 以包括无线资源配置和 /或基站间的传输配置， 如传输网络地址等信息。 一般由上下文 管理器所在的网元在终端进入配置基站所在的小区之前， 预先进行配置基站过程。 配 置完成后， 上下文管理器所在的网元可以保存新配置基站返回的资源配置信息。这样， 在终端切换前进行资源配置， 从而节省了切换时间。 在接收到资源配置信息后， 该方法还可以包括： 将所接收到的配置基站的资源配 置信息发送给终端以使该终端根据资源配置信息与配置基站进行通信。通过上述步骤， 终端可以预先获取到配置基站的资源配置信息， 网络可以再终端在进入该基站下的小 区后， 通知终端使用该资源配置信息与该配置基站进行通信。 在第一网元是基站的情况下， 第一网元还可以将配置基站列表发送给新的第一网 元。 终端发生切换时， 也就是终端从工作基站切换到目标基站即某个配置基站时， 此 时， 第一网元是工作基站， 配置基站则成为新的第一网元， 需要将原第一网元的配置 基站列表发送给新的第一网元， 这样， 新的第一网元便可以保存有基站配置列表， 而 不必重新生成。 实施例二 本发明实施例提供了一种无线资源管理方法， 图 4是根据本发明实施例的无线资 源管理方法的流程图二， 如图 4所示， 该流程包括以下步骤： 步骤 S402， 配置基站接收到第一网元发送的与终端进行通信的通知， 其中， 配置 基站是预先保存有终端的上下文信息的基站。 步骤 S404， 配置基站在该通知的指示下， 根据上下文信息与该终端进行通信； 优选地， 在接收到该通知之前， 该方法还可以包括： 配置基站根据上下文信息进 行资源配置， 并将资源配置信息经由第一网元发送给终端。 优选地，根据上下文信息与终端进行通信包括根据资源配置信息与终端进行通信。 优选地， 该方法还可以包括以下至少之一： 配置基站根据接收到的释放请求， 释 放终端的上下文信息； 配置基站修改终端的上下文信息并通知第一网元。 优选地， 在与终端进行通信之后， 该方法还包括： 在第一网元是基站的情况下， 配置基站在接收到新的第一网元的停止通信通知后停止与该终端通信； 在第一网元是 独立的上下文管理器的情况下， 配置基站在接收到第一网元的停止通信通知后停止与 该终端通信， 其中， 上下文管理器与配置基站相连， 设置为管理上下文信息。 实施例三 本发明实施例还提供了一种无线资源管理方法， 图 5是根据本发明实施例的无线 资源管理方法的流程图三， 如图 5所示， 该流程包括以下步骤： 步骤 S502， 终端接收到配置基站经由第一网元发送的资源配置信息， 其中， 配置 基站是预先保存有终端的上下文信息的基站； 步骤 S504， 终端在接收到第一网元发送的与配置基站进行通信的通知后， 根据资 源配置信息与配置基站进行通信。 优选地， 工作基站和配置基站是小小区基站。 实施例四 本发明实施例提供了一种无线资源管理装置， 图 6是根据本发明实施例的无线资 源管理装置的结构框图一， 该装置设置在第一网元上， 如图 6所示， 该装置包括： 判断模块 602， 设置为判断终端的目标基站是否是配置基站， 其中， 配置基站是 预先保存有终端的上下文信息的基站； 发送模块 604， 设置为在目标基站是配置基站的情况下， 分别向该配置基站和该 终端发送根据相应的上下文信息进行通信的通知。 优选地， 发送模块 604还设置为确定配置基站， 并将上下文信息发送给配置基站; 该装置还包括接收模块 606， 设置为接收并保存配置基站根据上下文信息返回的资源 配置信息， 并将配置基站的信息保存到配置基站列表中。 优选地， 发送模块 604还设置为将所接收到的配置基站的资源配置信息发送给该 终端以使该终端根据资源配置信息与配置基站进行通信。 优选地， 发送模块 604还设置为在第一网元是基站的情况下， 将配置基站列表发 送给新的第一网元。 实施例五 本发明实施例提供了一种无线资源管理装置， 图 7是根据本发明实施例的无线资 源管理装置的结构框图二， 该装置位于配置基站， 其中， 配置基站是预先保存有终端 的上下文信息的基站， 如图 7所示， 该装置包括- 基站接收模块 702， 设置为接收第一网元发送的与终端进行通信的通知； 基站通信模块 704， 设置为在该通知的指示下， 根据上下文信息与终端进行通信。 优选地， 还包括基站配置模块 706， 设置为根据上下文信息进行资源配置， 并将 资源配置信息经由第一网元发送给终端。 优选地， 基站通信模块 704设置为根据资源配置信息与该终端进行通信。 优选地， 该装置还包括以下至少之一： 释放模块 708， 设置为根据接收到的释放 请求， 释放该终端的上下文信息； 修改模块 710， 设置为修改终端的上下文信息并通 知第一网元。 实施例六 本发明实施例提供了一种无线资源管理装置， 图 8是根据本发明实施例的无线资 源管理装置的结构框图三， 如图 8所示， 该装置包括： 终端接收模块 802， 设置为接收配置基站经由第一网元发送的资源配置信息， 其 中， 配置基站是预先保存有终端的上下文信息的基站； 终端通信模块 804， 设置为在接收到第一网元发送的与配置基站进行通信的通知 后， 根据资源配置信息与该配置基站进行通信。 实施例七 本发明实施例提供了一种无线资源管理系统， 图 9是根据本发明实施例的无线资 源管理系统的结构框图， 如图 9所示， 该系统包括： 终端 902， 设置为在终端 902跨基站切换之前接收配置基站的资源配置信息， 然 后在终端 902切换到目标基站且目标基站是配置基站 906的情况下， 根据相应的资源 配置信息与该配置基站 906进行通信； 工作基站 904， 设置为在终端 902跨基站切换之前， 根据预定条件确定至少一个 配置基站 906， 并将终端 902的上下文信息发送给配置基站 906，然后将所接收到的配 置基站 906的资源配置信息发送给终端 902; 至少一个配置基站 906， 设置为在终端 902跨基站切换之前接收并保存上下文信 息， 根据上下文信息进行相应的资源配置， 并将资源配置信息发送给工作基站 904， 然后在某配置基站 906是目标基站的情况下， 该配置基站 906根据资源配置信息与终 端 902进行通信。 实施例八 图 10是根据本发明优选实施例的无线资源管理方法的流程图一， 如图 10所示， 该流程包括以下步骤： 步骤 S1002, 确定配置基站。 第一网元判断是否有基站满足配置基站条件即预定条件， 或者判断是否有配置基 站不满足配置基站条件， 以确定至少一个配置基站。 第一网元可以是独立的上下文管 理器， 也可以是终端的工作基站， 该工作基站上附着有上下文管理器。 上下文管理器 设置为管理终端的上下文信息。 在附着在工作基站的情况下， 其通过基站的端口和其 他基站通信； 在是独立网元的情况下， 其直接与各配置基站通信。 配置基站条件视具体的实现算法而定， 例如可以是终端当前所在小区的邻区所在 的基站， 如图 1所示， 当终端当前在 Cell2-1时， Celll-1禾 B Cell2-2是邻区， 则终端有 很大可能通过移动进入这两个小区，进而可以判断 Celll-1和 Cell2-2所在的基站 eNBl 和 eNB2是比较合适的配置基站， 其中由于终端已经和小区 Cell2-1 进行通讯， 所以 eNB2已经是工作基站， eNBl可以作为新的配置基站开始后续终端上下文配置过程。 上述仅是一种简单的实现算法， 基站也可以配置终端较低的测量上报门限， 在终端实 际需要切换之前， 能提前上报一些测量报告， 使得网络可以判断终端周围的邻区的情 况。 由于配置基站也是有开销的， 基站需要预先配置终端， 可能还需要预留一些资源， 如果终端最后没有进入该基站或者预留的时间过早， 也会造成资源的浪费， 所以预留 基站的数量也不是越多越好， 配置基站的选择算法需要考虑在切换开销和配置基站资 源之间进行综合考虑， 如果算法能较为准确的预估出未来一段时间内终端可能进入或 离开的基站， 则能取得较好的效果。 由于算法的多样性， 本发明实施例并不依赖于某 种算法实现。 步骤 S1004, 配置基站进行相应的资源配置。 确定了配置基站之后， 上下文管理器向配置基站发送终端的上下文信息。 配置基 站接收到终端的上下文信息后， 保存终端的上下文信息， 并进行相应的资源配置。 配 置基站可以在其控制的多个小区下对所述终端进行资源配置。 如上述的 eNBl下可以 根据终端的上下文， 在 Celll-1外还有小区 Celll-2也是附近的小区， 则 eNBl可以配 置 Celll-l,Celll-2等多个小区的资源用于所述终端。 步骤 S1006, 配置基站返回资源配置信息。 新配置的配置基站返回与终端相应的资源配置信息。 步骤 S1008, 将配置基站加入到配置基站列表中。 实施例九 图 11a是根据本发明实施例的上下文管理器的网络拓扑图一， 如图 11a所示， 上 下文管理器 1102可以是一个模块， 位于基站 2上。 当作为基站内的模块时， 可以使用 基站间的接口与基站进行通讯。 每个基站都可以实现该模块的功能， 但对于一个终端 来说， 只有一个基站启用该模块， 一般可以选择工作基站上启用该模块， 其他基站受 该基站的控制。 对于单连接终端， 由于同时只能和一个工作基站进行通讯， 则在停止 原工作基站通讯前需要新工作基站的上下文管理器模块进行工作， 同时关闭原工作基 站的上下文管理器模块， 转入接受新工作基站的控制。 原工作基站可以通过基站间接 口将上下文管理器模块的一些保存配置发送给新的工作基站， 其中， 保存配置主要是 配置基站列表的数据 （包括其中的工作基站和非工作基站列表和对应的资源配置信 息）， 还有可能包含一些无线资源管理 （Radio Resource Management, 简称 RRM) 测 量数据。 对于多连接终端则， 可以称开启上下文管理模块的工作基站为主工作基站， 选择多个工作基站中的一个作为主工作基站选择的原则可以根据实现而定， 本发明实 施例不做限定， 当主工作基站需要变化时， 可以使用单连接终端相同的方式， 将原主 工作基站的上下文管理器的资源配置信息通过基站间接口发送给新的主工作基站， 然 后停止原主工作基站的上下文管理器的功能，开启新主工作基站的上下文管理器功能。 图 lib是根据本发明实施例的上下文管理器的网络拓图二， 如图 lib所示， 上下 文管理器是独立的网元。 当作为独立网元时， 其通过接口和各个基站相连。 当上下文 管理器作为独立网元时， 由于上下文管理器无法和终端有直接的通讯， 需要在上下文 管理器和工作基站间接口上转发和终端间的通讯信令。 当上下文管理器节点需要变更 时， 其工作流程与图 11a中的流程类似， 相关配置通过上下文管理器之间的接口传输， 此处不再赘述。 实施例十 图 12是根据本发明优选实施例的无线资源管理方法的流程图二， 如图 12所示， 该流程包括以下步骤： 步骤 S1202, 向配置基站发送终端的上下文。 基于 11a的网络架构， 当有新的配置基站满足配置基站条件后， 上下文管理器所 在的工作基站将终端的上下文发送给该配置基站。 终端的上下文大致可以分为两类， 一类是终端自己的信息和所在基站无关， 如终端的业务 E-RAB属性， 另一类是接入层 上下文， 为基站分配给终端的配置或者资源上下文， 如传输上下文， RRC的上下文包 括终端标识 C-RNTI、接入层配置、小区物理标识等信息。工作基站可以发送上述中的 全部或者部分终端上下文给新的配置基站， 用于配置基站根据原终端上下文配置当终 端进入该基站后的上下文信息。 步骤 S1204, 根据终端的上下文进行资源配置。 配置基站根据收到的终端上下文中的业务 E-RAB属性，分配终端在该基站上工作 的 RRC的上下文如新的 C-RNTI、 新的接入层 L2配置、 小区的广播配置等必要的配 置， 甚至还可以分配一些终端专用资源， 如专用的物理上行链路控制通道 （Physical Uplink Control Channel 简称为 PUCCH) 资源、 专用的随机接入导频， 使得终端到该 基站下小区的覆盖范围内时， 可以通过该配置和该基站通讯。 配置基站可以配置一个 以上的小区的无线资源即上述 RRC资源用于所述终端。如果传输上下文被配置，两个 基站间的传输通道， 比如和目前 LTE切换过程中的 （GPRS Tunnelling Protocol User plane, 简称为 GTP-U) 隧道类似， 可以被预先建立起来， 设置为在基站间传输业务 数据。 待配置基站转为非工作的配置基站。 步骤 S1206， 将终端的资源配置经由工作基站发送给该终端。 新的非工作基站将终端的资源配置信息发送给工作基站。 特别的可以直接生成重 配置消息用于添加新小区配置， 通过类似的切换相应的形式， 一般以容器 （container) 的方式通过基站间接口发送给工作基站， 由工作基站发送给终端。 也可以将对应的资 源配置发送到工作基站， 由工作基站生成重配置消息发送给终端。 终端保存接收配置 的配置信息， 保存的小区初始处于非工作态， 直到工作基站通知终端可以进行通信。 实施例 ^一 图 13是根据本发明实施例的配置基站列表的管理流程图，本实施例基于图 11a的 网络架构，如图 13所示，该流程包括三个子流程：添加流程、释放流程以及修改流程。 在本实施例中， 工作基站相当于第一网元。 配置基站的添加上下文的流程包括以下步骤： 步骤 S1302a， 终端反馈。 终端向工作基站发送终端反馈。 步骤 S1304a， 配置决策。 工作基站根据终端反馈进行配置决策。 步骤 S1306a， 工作基站向配置基站发送添加终端上下文请求。 当判定需要添加新的终端上下文时， 工作基站发送终端上下文添加请求给该配置 基站。 步骤 S1308a， 配置基站添加终端上下文。 步骤 S1310a， 配置基站发送添加终端上下文响应。 步骤 S1312a， 工作基站发送重配置消息。 工作基站接收到新非工作基站发送的上下文响应后， 发送重配置消息， 通知终端 保存配置基站的配置。 配置基站的释放流程包括以下步骤： 步骤 S1302b， 终端反馈。 终端向工作基站发送终端反馈。 步骤 S 1304b， 配置决策。 工作基站根据终端反馈进行配置决策。 步骤 S1306b， 工作基站向配置基站发送释放终端上下文请求。 当判定需要释放终端上下文时，工作基站发送终端上下文释放请求给该配置基站。 步骤 S1308b， 配置基站释放终端上下文。 配置基站释放相关终端的上下文和相关的资源。 步骤 S1310b， 配置基站发送释放终端上下文响应。 步骤 S1312b， 工作基站发送重配置消息。 工作基站接收到配置基站发送的上下文响应后， 通知终端释放配置基站的配置。 上述过程可以复用终端上下文添加消息流程， 在消息中以标志位区别添加还是释 放， 或者可以使用单独的释放终端上下文消息而无需等待接收基站响应。 除了工作基 站发起外， 还可以通过配置基站自己删除， 如设置一个定时器， 当定时器超时后， 终 端还未进入配置基站所在小区的覆盖范围时， 则配置基站可以自行将终端的上下文删 除， 如果预留了资源也相应的删除。 删除后配置基站可以通知工作基站， 对应的终端 上下文已删除。 最后可选的工作基站可以发送消息给终端删除对应配置基站的配置。 当配置基站中的配置发生变更时， 可以通过终端上下文修改通知工作基站， 该流 程包括以下步骤： 步骤 S1302c， 配置基站修改终端上下文。 步骤 S1304c， 配置基站向工作基站发送修改终端上下文通知。 步骤 S1306c， 工作基站将新的资源配置信息发送给终端 （RRC ReCOnfig)。 工作基站根据所接收到的修改上下文通知， 进行资源配置， 并将新的资源配置发 送给终端。 本发明实施例还提供了一种添加上下文的方法，图 14是根据本发明实施例的添加 上下文的流程图， 本实施例将上下文管理器作为独立网元， 即本实施例基于图 lib的 网络架构， 此时需要在上下文管理器和工作基站间传输终端反馈信息和添加终端上下 文响应或者直接为 RRC重配置消息。本实施例中， 上下文管理器相当于第一网元。 如 图 14所示， 该流程包括以下步骤： 步骤 S1402， 终端反馈。 终端向工作基站发送终端反馈。 步骤 S1404, 工作基站转发终端反馈给上下文管理器。 步骤 S1406, 上下文管理器进行配置决策。 上下文管理器根据终端反馈进行配置决策。 步骤 S1408, 上下文管理器向配置基站发送添加终端上下文请求。 当判定需要添加新的终端上下文时， 上下文管理器发送终端上下文添加请求给该 配置基站。 步骤 S1410, 配置基站添加终端上下文。 配置基站保存相关终端的上下文。 步骤 S1412, 配置基站向上下文管理器发送添加终端上下文响应。 步骤 S1414, 上下文管理器转发添加终端上下文响应。 步骤 S1416, 工作基站发送重配置消息。 工作基站接收到上下文管理器发送的上下文响应后， 发送重配置消息， 通知终端 保存配置基站的配置。 实施例十二 图 15是根据本发明实施例的工作基站管理流程图， 如图 15所示， 该流程包括以 下步骤： 步骤 S1502， 工作基站选择判决。 判断是否需要启用新的工作基站和终端进行通信。 判断基于工作基站管理的算法 决定， 有多种实现可能， 可以使根据终端测量报告确定终端发现某小区覆盖范围， 或 者根据终端流量变大， 增加配置小区用于通信， 本发明不依赖于特定判断算法， 所以 不做限定。 步骤 S1504, 判断目标基站是否已经存在于配置基站列表中。 如果存在， 执行步骤 S1506, 否则， 执行步骤 S1508。 或者也可以判断目标小区 是否已经进行资源配置。 步骤 S1506, 通知终端和该工作基站开始通信。 当配置基站下有多个小区有预先配置时， 指示信息中应携带小区特定的标识， 用 于指示终端和工作基站下的特定小区进行通信。 终端和配置基站收到通知后开始进行通信。 步骤 S1508， 执行现有技术中的切换流程。 实施例十三 图 16是根据本发明优选实施例的工作基站管理流程图一， 如图 16所示， 基站 1 为工作基站， 基站 2为配置基站， 本实施例中工作基站相当于第一网元， 该流程包括 以下步骤： 步骤 S1602， 终端反馈。 此步骤也可以不存在。 步骤 S 1604， 工作基站选择。 基站 1选择工作基站由实现算法触发。 例如可以是通过终端反馈的测量相关信息 决定是否进入某小区的覆盖范围， 也可以根据基站自己的测量， 或者基站还可以根据 负载均衡算法判断等， 可以使用切换中目标小区选择类似的算法， 或者由于终端吞吐 量增加， 需要启用新的基站下的小区等原因， 本发明实施例不做算法上的限定。 当一个基站被选择可以用于传输后， 需要判断其是否已经在配置基站列表中， 即 是否已经是非工作基站， 如果在， 则表示该基站已经有终端的上下文和 /或资源配置信 息， 可以立即 通知该非工作基站转化为工作基站开始和终端进行通讯。 本实施例假设选择基站 2且基站 2为新的工作基站即目标基站。 或判断需要开始通信目标小区所述的基站是 否在配置基站集合中， 并且判断目标小区是否已经进行资源配置。 基站 1通知基站 2开始传输，通知消息中可以携带基站 2下特定小区的指示信息， 并将下行的数据通过基站间接口传输到基站 2。 步骤 S1606， 开始传输。 基站 1同时通知终端开始和基站 2下的小区开始传输。 基站 1通知终端和基站 2 开始工作， 通知消息中可以携带基站 2下特定小区的指示信息。 并将下行的数据通过 基站间接口传输到基站 2。 终端开始在基站 2下的小区接收数据。 由于到达终端的通 知消息有传输时延和处理时延， 基站 2可以稍作等待 T毫秒后再发送数据给终端， T 可以进行配置或者协议进行约定， 并将上行的数据通过基站间接口传输到基站 2。 步骤 S 1608， 随机接入。 如果终端和基站 2之间上行未同步， 则需要终端必须在该基站的小区进行随机接 入， 当随机接入完成同步后， 如上所述发送响应消息或等待基站开始和终端进行传输。 或者， 在 S1606中基站 1通知终端基站 2开始工作， 基站 2不进行固定的 T毫秒 等待终端处理通知， 而是等待终端在基站 2上进行反馈后才开始数据传输。 即不管终 端是否和基站 2之间上行同步， 当终端收到基站 1的通知后， 终端都在基站 2指定的 小区中进行随机接入。 步骤 S1610, 终端发送反馈应答。 终端向基站 2发送反馈应答。 终端可以使用专用的随机接入或者终端发送其专有 的标识信息如预先分配给终端的标识信息如 C-RNTI, 用于基站 2识别是该终端的连 接， 使用该终端对应的配置信息。 步骤 S1612, 传输。 基站 2开始和终端进行传输， 将下行的通过基站间接口来自基站 1的数据发送到 终端， 将上行来自终端的数据通过基站间接口发送到基站 1。 如果需要停止基站 1和终端的通讯， 则需要将核心网和基站 1的数据流通过 path switch过程切换到基站 2。 基站 1将未发送完成的数据包通过基站间的传输通道反传 至基站 2。 图 17是根据本发明优选实施例的工作基站选择流程图二， 如图 17所示， 基站 1 为工作基站， 基站 2为配置基站， 该流程包括以下步骤： 步骤 S1702， 终端反馈。 步骤 S1704, 工作基站转发终端反馈给上下文管理器。 步骤 S1706, 上下文管理器选择工作基站。 上下文管理器选择工作基站由实现的算法触发。 例如可以是通过终端反馈的测量 相关信息决定是否进入某小区的覆盖范围， 也可以根据工作基站的测量， 或者还可以 根据负载均衡算法判断等， 可以使用切换中目标小区选择类似的算法， 本发明实施例 不做算法上的限定。 当一个基站被选择可以用于传输后， 需要判断其是否已经在配置基站列表中， 如 果在， 则表示该基站已经有终端的上下文， 可以直接通知该配置基站转化为工作基站 开始和终端进行通讯。 本实施例假设选择基站 2且基站 2为新的工作基站。 步骤 S1708， 开始传输。 上下文管理器经由基站 1通知终端基站 2开始工作。 终端开始在基站 2下的小区 接收数据。 由于到达终端的消息有传输时延和处理时延， 基站 2在可以稍作等待 T毫 秒后再发送数据给终端， T可以进行配置活着协议进行约定。 步骤 S1710, 随机接入。 如果终端和基站 2之间未同步， 则需要终端必须在该基站的小区进行随机接入， 当随机接入完成同步后， 如上所述发送响应消息或等待基站开始和终端进行传输。 或者基站 1通知终端基站 2开始工作， 不管终端是否和基站 2之间同步， 终端在 基站 2的小区中进行随机接入。 步骤 S1712, 终端发送反馈应答。 终端向基站 2发送反馈应答。 终端可以使用专用的随机接入或者终端发送其专有 的标识信息如预先分配给终端的标识信息如 C-RNTI, 用于基站识别是该终端的连接。 步骤 S1714， 传输。 基站 2收到响应后， 开始和终端进行传输。 实施例十四 图 18是根据本发明实施例的停止工作基站传输的流程图， 如图 18所示， 基站 1 为工作基站， 基站 2为配置基站， 该流程包括以下步骤： 步骤 S1802， 终端反馈。 步骤 S 1804， 工作基站选择。 工作基站选择判断可以由实现的算法触发， 例如多连接终端， 可以在同时有多个 工作基站时判断哪些基站已经不适合用作传输， 则可以停止该工作基站的传输。 步骤 S1806, 停止传输。 基站 1发送传输停止消息到基站 2， 基站 2则停止传输。 如果当基站 2的缓存中 还有未处理的数据则通过基站间通道传输至还在工作的工作基站， 如基站 1。 基站 1发送消息通知终端， 停止在基站 2接收数据。
实施例十五 对于单连接终端， 由于同时只能由一个工作基站进行传输， 则可以通过上述流程 先开始基站 2传输然后停止基站 1的传输。或者为了基站间的信令可以两个流程合并， 在启动新的工作基站时， 停止旧的动作基站的传输。 工作基站开始配置基站的传输时， 停止自身的传输。 终端收到开始传输通知时， 停止基站 1的传输并开始和基站 2进行传输。 基站 1将缓存中还有未处理的数据则通 过基站间通道传输至基站 2。 此外由于单连接终端只能同时和一个工作基站进行传输， 对于基站到核心网的数 据流， 则在完成上述过程后， 终端和新工作基站即基站 2进行通讯， 基站 2将数据流 通过原工作基站即基站 1进行转发至核心网，保持原 S1连接不变，数据通过基站间接 口传输至基站 1。或者将 S1连接修改至基站 2，则基站 2使用原链路切换（Path Switch) 过程， 发送 Path Switch至核心网， 将基站 1和核心网之间的数据通道切换到基站 2， 基站 1将未发送完成的数据包通过基站间的传输通道反传至基站 2。 如果终端有多连接传输能力， 即可以和多于一个基站同时进行传输， 在上述过程 中，可以同时和基站 1和基站 2进行通讯， 即终端在新的基站 2随机接入或者传输时， 仍然可以保持和基站 1的传输。 基站 1为 S1连接的锚点， 将核心网发来的数据分流， 分别通过基站 1和终端的连接以及基站间传输通道发送至基站 2， 由基站 2和终端的 连接传输给终端， 同时也汇聚来基站 1和基站 2的数据发送到核心网。 S1的连接锚点 也可以通过 path switch流程修改至基站 2。 如要考虑兼容 LTE/LTE-A的终端， 即不修改终端的情况下， 如果能在终端到达切 换区之前， 提前进行对目标基站添加到配置基站集， 源基站即工作基站， 可以通过上 述过程完成配置基站集的准备工作， 和图 13及图 14相区别的当配置基站完成终端上 下文的添加后， 不将 RRC重配置先发送给终端， 而是进行本地暂存。在工作基站发生 变更时或者要启用新的工作基站时， 如图 15及图 16所示，在 RRC重配置代替开始传 输消息发送给终端， 终端则可以按原 LTE流程进行切换， 终端反馈即为 RRC重配完 成， 之前的整个过程终端不受影响不需修改， 由于目标基站已经提前完成了切换请求 过程， 整个切换过程只需要进行空口的重配置即可， 所以有可以缩短切换时延， 减少 切换中断， 提高吞吐量， 减少切换失败的概率等益处。 上述原工作基站如果发现目标基站不在配置基站集中时， 或者目标小区不再配置 基站配置资源的小区中时， 则可以按原 LTE切换过程切换。 从以上的描述中， 可以看出， 本发明实施例实现了如下技术效果： 提高了切换成 功率， 并是得业务中断短、 切换延时小以及信令开销少。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装置所 组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而， 可以 将它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处 的顺序执行所示出或描述的步骤， 或者将它们分别制作成各个集成电路模块， 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。 这样， 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技 术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内， 所作的 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 如上所述， 本发明实施例提供的一种无线资源管理方法、 装置及系统具有以 下有益效果： 提高了切换成功率， 并是得业务中断短、切换延时小以及信令开销少。

Claims

权 利 要 求 书
1. 一种无线资源管理方法， 包括：
第一网元判断终端的目标基站是否是配置基站， 其中， 所述配置基站是预 先保存有所述终端的上下文信息的基站；
在所述目标基站是所述配置基站的情况下， 所述第一网元分别向所述配置 基站和所述终端发送根据相应的所述上下文信息进行通信的通知。
2. 根据权利要求 1所述的方法， 其中， 在判断所述目标基站是否是所述配置基站 之前， 所述方法还包括：
所述第一网元确定所述配置基站， 并将所述上下文信息发送给所述配置基 站；
所述第一网元接收并保存所述配置基站根据所述上下文信息返回的资源配 置信息， 并将所述配置基站的信息保存到配置基站列表中。
3. 根据权利要求 2所述的方法， 其中， 在接收到所述资源配置信息后， 所述方法 还包括：
将所述资源配置信息发送给所述终端以使所述终端根据所述资源配置信息 与所述配置基站进行通信。
4. 根据权利要求 2或 3所述的方法， 其中， 在所述第一网元是基站的情况下， 所 述第一网元将所述配置基站列表发送给新的第一网元。
5. 一种无线资源管理方法， 包括：
配置基站接收到第一网元发送的与终端进行通信的通知， 其中， 所述配置 基站是预先保存有所述终端的上下文信息的基站；
所述配置基站在所述通知的指示下， 根据所述上下文信息与所述终端进行 通信。
6. 根据权利要求 5所述的方法， 其中， 在接收到所述通知之前， 所述方法还包括： 所述配置基站根据所述上下文信息进行资源配置， 并将资源配置信息经由所述 第一网元发送给所述终端。
7. 根据权利要求 6所述的方法， 其中， 根据所述上下文信息与所述终端进行通信 包括根据所述资源配置信息与所述终端进行通信。
8. 根据权利要求 5至 7中任一项所述的方法， 其中， 所述方法还包括以下至少之 所述配置基站根据接收到的释放请求， 释放所述终端的上下文信息； 所述配置基站修改所述终端的上下文信息并通知所述第一网元。
9. 根据权利要求 8所述的方法， 其中， 在与所述终端进行通信之后， 所述方法还 包括：
在所述第一网元是基站的情况下， 所述配置基站在接收到新的第一网元的 停止通信通知后停止与所述终端通信；
在所述第一网元是独立的上下文管理器的情况下， 所述配置基站在接收到 所述第一网元的停止通信通知后停止与所述终端通信， 其中， 所述上下文管理 器与所述配置基站相连， 设置为管理所述上下文信息。
10. 一种无线资源管理方法， 包括：
终端接收到配置基站经由第一网元发送的资源配置信息， 其中， 所述配置 基站是预先保存有所述终端的上下文信息的基站；
所述终端在接收到所述第一网元发送的与所述配置基站进行通信的通知 后， 根据所述资源配置信息与所述配置基站进行通信。
11 一种无线资源管理装置， 位于第一网元， 所述装置包括：
判断模块， 设置为判断终端的目标基站是否是配置基站， 其中， 所述配置 基站是预先保存有所述终端的上下文信息的基站；
发送模块， 设置为在所述目标基站是所述配置基站的情况下， 分别向所述 配置基站和所述终端发送根据相应的所述上下文信息进行通信的通知。
12. 根据权利要求 11所述的装置， 其中，
所述发送模块还设置为确定所述配置基站， 并将所述上下文信息发送给所 述配置基站；
所述装置还包括接收模块， 设置为接收并保存所述配置基站根据所述上下 文信息返回的资源配置信息，并将所述配置基站的信息保存到配置基站列表中。
13. 根据权利要求 12所述的装置，其中，所述发送模块还设置为将所述资源配置信 息发送给所述终端以使所述终端根据所述资源配置信息与所述配置基站进行通 信。
14. 根据权利要求 12或 13所述的装置， 其中， 所述发送模块还设置为在所述第一 网元是基站的情况下， 将所述配置基站列表发送给新的第一网元。
15. 一种无线资源管理装置， 所述装置位于配置基站， 其中， 所述配置基站是预先 保存有终端的上下文信息的基站， 所述装置包括- 基站接收模块， 设置为接收第一网元发送的与所述终端进行通信的通知； 基站通信模块， 设置为在所述通知的指示下， 根据所述上下文信息与所述 终端进行通信。
16. 根据权利要求 15所述的装置， 其中， 还包括基站配置模块， 设置为根据所述上 下文信息进行资源配置，并将资源配置信息经由所述第一网元发送给所述终端。
17. 根据权利要求 16所述的装置，其中，所述基站通信模块设置为根据所述资源配 置信息与所述终端进行通信。
18. 根据权利要求 15至 17中任一项所述的装置， 其中， 所述装置还包括以下至少 之一：
释放模块， 设置为根据接收到的释放请求， 释放所述终端的上下文信息； 修改模块， 设置为修改所述终端的上下文信息并通知所述第一网元。
19. 一种无线资源管理装置， 位于终端， 包括：
终端接收模块， 设置为接收配置基站经由第一网元发送的资源配置信息， 其中， 所述配置基站是预先保存有所述终端的上下文信息的基站；
终端通信模块， 设置为在接收到所述第一网元发送的与所述配置基站进行 通信的通知后， 根据所述资源配置信息与所述配置基站进行通信。
20. 一种无线资源管理系统， 包括：
终端， 设置为在所述终端跨基站切换之前接收配置基站的资源配置信息， 然后在所述终端切换到目标基站且所述目标基站是所述配置基站的情况下， 根 据相应的所述资源配置信息与所述配置基站进行通信； 所述工作基站， 设置为在终端跨基站切换之前， 根据预定条件确定至少一 个所述配置基站， 并将所述终端的上下文信息发送给所述配置基站， 然后将所 接收到的所述配置基站的资源配置信息发送给所述终端；
至少一个所述配置基站， 设置为在所述终端跨基站切换之前接收并保存所 述上下文信息， 根据所述上下文信息进行相应的资源配置， 并将资源配置信息 发送给所述工作基站， 然后在所述配置基站是所述目标基站的情况下， 根据所 述资源配置信息与所述终端进行通信。
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