WO2013013638A1 - 移动负载均衡处理方法、中继节点、宿主基站、和通讯系统 - Google Patents
移动负载均衡处理方法、中继节点、宿主基站、和通讯系统 Download PDFInfo
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- WO2013013638A1 WO2013013638A1 PCT/CN2012/079229 CN2012079229W WO2013013638A1 WO 2013013638 A1 WO2013013638 A1 WO 2013013638A1 CN 2012079229 W CN2012079229 W CN 2012079229W WO 2013013638 A1 WO2013013638 A1 WO 2013013638A1
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- load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
- H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
Definitions
- the present invention relates to communication technologies, and in particular, to a mobile load balancing processing technology. Background technique
- a relay technology that is, one or more relay nodes (called RNs) are added between the BS and the UE, and the RN is responsible for making the wireless signals sent by the BS one or more times. The signal is forwarded and finally reaches the UE.
- RNs relay nodes
- an RN may divide a BS and a UE's radio link into two radio links, a BS to RN and an RN to the UE, so that a poor quality link can be replaced with two better quality links. For higher link capacity and better coverage.
- BSs can be connected through an X2 interface.
- the DBS will provide a proxy function for the S1/X2 interface between the RN and other network nodes.
- DB S provides a proxy function for the SI interface between the RN and the mobility management entity (the mobility management entity), and provides an agent for the SI interface between the RN and the serving gateway (SGW).
- SGW serving gateway
- the proxy function, and the proxy function that provides the X2 interface between the RN and the BS In other words, the information passed between the RN and the BS needs to be processed and forwarded through the DBS.
- the DBS can provide services for the UE.
- the RN controlled by the DBS can also serve as a base station to the UE.
- the randomness of the UE location and the diversity of the service may cause the load of some cells to be excessively heavy or even congested, and the load of the neighboring cells of the foregoing cell may be light.
- the above cell and its neighboring cell refer to the letter of the two cells There is an intersection of the number coverage. For example, if there is overlapping signal coverage between two cells, the two cells form an adjacent relationship with each other and are neighboring cells of each other. Similarly, when the number of base stations providing services to the neighboring cells exceeds one, the base stations may also be referred to as adjacent base stations.
- a feasible way to alleviate the overload of the above-mentioned cells is through negotiation between cells, for example, through negotiation between a cell and its neighboring cells.
- the over-loaded cell requests the neighboring cell with a light load to share the load generated by a part of the UE, that is, the UE located at the edge of the overloaded cell is switched to the neighboring cell with a lighter load, so as to reach between the cells.
- Load balancing which maximizes the utilization of network resources, thereby increasing system capacity and system performance.
- the present invention solves the problem of mobile load balancing between cells after the introduction of the RN by providing a mobile load balancing processing method, a relay node, a host base station, and a communication system.
- an aspect of the present invention provides a mobile load balancing processing method, including:
- the host base station DBS sends the indication information to the relay node RN under the host base station DBS; the host base station DBS instructs the relay node RN to perform mobile load balancing processing via the indication information, to use the relay node At least one user equipment UE in the cell under the RN switches to the neighboring cell.
- Another aspect of the present invention provides a mobile load balancing processing method, including:
- the relay node RN receives the indication information sent by the host base station DBS serving the relay node RN;
- the relay node RN triggers a mobile load balancing process according to the indication information, and is used to At least one user equipment UE in the cell under the relay node RN is handed over to the neighboring cell.
- a host base station including:
- a detecting unit configured to detect whether a transport network layer resource of the S1 interface between the host base station DBS and the relay node RN under the host base station DBS exceeds a first mobile load balancing trigger threshold, or detect the host base station DBS Whether the hardware resource exceeds the second mobile load balancing trigger threshold, or detects whether the transport network layer resource of the S1 interface between the host base station DBS and the serving gateway SGW exceeds a third mobile load balancing trigger threshold, or detects the host base station. Whether the radio resource load of the cell under the DBS exceeds the fourth mobile load balancing trigger threshold; and
- a first processing unit configured to send indication information to the relay node RN, to switch at least one user equipment UE of the cell under the relay node RN to a neighboring cell.
- a further aspect of the present invention provides a relay node, including:
- a receiving unit configured to receive indication information sent by a host base station DBS serving the relay node RN;
- a processing unit configured to perform mobile load balancing processing according to the indication information, and switch at least one user equipment UE in the cell under the relay node RN to the neighboring cell.
- a further aspect of the present invention provides a communication system, including:
- a relay node RN and a host base station DBS serving the relay node RN; the host base station DBS, configured to send indication information to the relay node RN;
- the relay node RN is configured to perform mobile load balancing processing according to the indication information, and switch at least one user equipment UE in the cell under the relay node RN to the neighboring cell.
- the present invention adjusts the attached cell of the UE by using the handover of the UE, so that after the RN is introduced, load balancing is implemented between the cells, thereby maximizing network resource utilization, thereby improving system capacity and system performance.
- FIG. 1 is a network architecture diagram according to an embodiment of the present invention
- FIG. 2 is a flowchart of a mobile load balancing processing method according to a first embodiment of the present invention
- FIG. 3 is a flowchart of triggering mobile load balancing processing according to a first embodiment of the present invention
- FIG. 4 is a second embodiment of the present invention.
- FIG. 5 is a flowchart of a mobile load balancing processing method according to a third embodiment of the present invention
- FIG. 6 is a flowchart of a mobile load balancing processing method according to a fourth embodiment of the present invention
- FIG. 7 is a schematic structural diagram of a relay node according to a fifth embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a host base station according to a sixth embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a communication system according to a seventh embodiment of the present invention.
- the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
- the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive work are all within the scope of the present invention.
- a communication system to which different embodiments of the present invention may be applied includes at least one first RN, at least one first DBS serving the first RN, and at least one base station or relay station.
- the foregoing base station may be a second DBS or a BS
- the foregoing relay station may be a second RN.
- different embodiments of the present invention may be applied to a communication system as shown in FIG. 1, including one RN, one DBS for the RN, and one BS, and the following The description of the examples refers to the scenario shown in Figure 1.
- a communication system to which different embodiments of the present invention may be applied may include at least one first RN, at least one first DBS serving the first RN, and at least one The second DBS; or the above communication system may also include at least one first RN, at least one first DBS serving the first RN, and at least one second RN, which are not described herein.
- the RN in a different embodiment of the invention is located under the DBS and the RN is under the control of the DBS.
- the DBS, and BS serve one or more cells, respectively. It can be understood by those skilled in the art that the DBS may be a macro base station or a micro base station; the BS may also be a macro base station or a micro base station, but embodiments of the present invention are not limited thereto.
- the cells located under the DBS and the cells located under the BS may be referred to as neighboring cells, and the cells located under the RN and the cells located under the BS may also be referred to as neighboring cells.
- the communication system includes at least one first RN, at least one first DBS serving the first RN, and at least one second DBS.
- the cell located in the first DBS and the cell in the second DBS may be referred to as a neighboring cell, and the cell located under the first RN and the cell located in the second DBS may also be referred to as a neighboring cell.
- the foregoing communication system includes at least one first RN, at least one first DBS serving the first RN, and at least one second RN, the cell located under the first DBS and the cell located under the second RN
- the cells that are located under the first RN and the cells that are located under the second RN may also be referred to as neighboring cells, and are not referred to herein.
- the interface between the DBS and the UE, the interface between the BS and the UE, and the interface between the RN and the UE belong to the Uu interface (hereinafter referred to as the air interface), and the Uu interface is mainly used for signaling of the control plane and Transfer of user plane data.
- a communication connection can also be established between the RN and the DBS via the air interface.
- the RN and the DBS can pass through the protocol stack on the RN side and the DBS side.
- the Radio Resource Control (RRC) establishes a communication connection between the RN and the DBS.
- the S1 interface between the DBS and the RN is mainly used for data transmission of the S1 control signaling and the relay link (backhaul).
- the above relay link is used for communication between the DBS and the RN.
- the S1 interface between the DBS and the SGW is mainly used for the transmission of user plane data.
- the S1 interface between the DBS and the MME is mainly used for the transmission of the S1 control signaling.
- the X2 interface between the DBS and the RN, and between the DBS and the BS, is mainly used for the transmission of X2 control signaling.
- the DBS is responsible for resource allocation of the relay link between the RN and the DBS, and performs data transmission of the relay link through the S1 interface established between the RN and the DBS.
- DBS its air interface resources are preferentially used for the transmission of data of the relay link or S1/X2 control signaling, and then used to provide coverage.
- DBS will first guarantee the transmission of data or control signaling between the DBS and the RN, and then provide the transmission of data or control signaling between the DBS and the UE. That is to say, the transmission resources between the RN and the DBS are dynamically allocated and adjusted by the DBS.
- the DBS can dynamically adjust or allocate transmission resources between the RN and the DBS according to the amount of data transmitted to the UE under the RN in the coverage of the RN, for example, data transmitted to the UE under the RN within the coverage of the RN. If the amount is relatively large, the DBS allocates some transmission resources for the relay link between the RN and the DBS for the transmission of the UE data, and details are not described herein again.
- the DBS may notify the RN to handover the UE at the cell edge location under the RN to the lightly loaded cell under the BS.
- the UE at the cell edge location of the cell may be switched to the cell with a lighter load under the RN, so as to be in the cell under the DBS and the cell under the BS, and under the BS.
- Load balancing is implemented between the cell and the cell under the RN, thereby maximizing network resource utilization, thereby improving system capacity and system performance.
- a communication method provided by the first embodiment of the present invention is as shown in FIG. 2, and includes:
- the DBS sends the indication information to the RN under the DBS.
- the RN performs mobile load balancing processing according to the indication information, to switch at least one UE under the RN to a neighboring cell.
- the DBS is triggered to send the indication information to the RN:
- the DBS detects that the transport network layer resource of the S1 interface between the DBS and the RN exceeds a first mobile load balancing trigger threshold. For example, the transport network layer resource of the S1 interface between the DBS and the RN is overloaded; for example, the transport network layer resource of the S1 interface between the DBS and the RN is overloaded or overloaded; For example, whether the transmission network layer resource of the S1 interface between the DBS and the RN exceeds a first mobile load balancing trigger threshold may be determined according to a predetermined value.
- the DBS detects that its own hardware resource exceeds the second mobile load balancing trigger threshold. For example, the hardware resources of the DBS are overloaded; for example, the hardware resources of the DBS are overloaded or overloaded; for example, whether the hardware resources of the DBS exceed the second mobile load balancing trigger threshold according to a predetermined value. .
- the DBS detects that the transport network layer resource of the S1 interface between the DBS and the SGW exceeds a third mobile load balancing trigger threshold. For example, the transport network layer resource of the S1 interface between the DBS and the SGW is overloaded; for example, the transport network layer resource of the S1 interface between the DBS and the SGW is overloaded or overloaded; The predetermined value determines whether the transport network layer resource of the S1 interface between the DBS and the SGW exceeds a third mobile load balancing trigger threshold.
- the DBS detects that its radio resource load exceeds a fourth mobile load balancing trigger threshold.
- the radio resource load of the DBS is overloaded; for example, the radio resource load of the DBS is overloaded or overloaded; for example, whether the radio resource load of the DBS exceeds the fourth mobile load according to a predetermined value.
- Balance trigger threshold The radio resource load of the DBS may be obtained by the UE and the RN jointly occupying the physical resource block (PUB) of the DBS.
- the first to fourth mobile load balancing trigger thresholds may be values determined according to a predetermined manner. A person skilled in the art can understand that the foregoing mobile load balancing trigger threshold can also be determined according to other manners, and details are not described herein again.
- the above indication information is used to indicate that the RN triggers the process of mobile load balancing. For example, after receiving the indication information sent by the DBS, the RN will trigger the RN to send a resource status request message (Resource Status Request) to the BS, and perform determination of the target cell according to the load status information of each cell in the BS reported by the BS. . Subsequently, the RN indicates that the UE at its cell edge location switches to the target cell, thereby implementing load balancing between the cell under the DBS and the cell under the BS.
- the target cell refers to a cell where the UE is located after the handover is completed.
- the target cell may be a cell with a light load under the BS.
- the foregoing cell edge location may be acquired by using a predetermined manner, and that the RN may switch the UE in the cell edge location to the target cell, to switch the at least one UE in the RN cell to the target cell, I will not repeat them here.
- the indication information may be carried by adding a new parameter to the existing message, and the indication information may be carried by the newly defined message, and details are not described herein again.
- the RN cannot obtain the transmission network layer resource load information of the S1 interface between the DBS and the DBS in a timely and accurate manner.
- the RN cannot obtain the transmission network layer resource load information of the S1 interface between the DBS and the DBS in a timely and accurate manner.
- the RN cannot obtain the transmission network layer resource load information of the S1 interface between the DBS and the DBS in a timely and accurate manner.
- the DBS is reduced by switching the UE located at the cell edge location to the cell under the BS (which may also be understood as the target cell).
- the resource of the cell under the DBS is overloaded.
- the number of UEs located at the edge of the cell under the DBS is not large, even if the DBS switches all of the UEs to the target cell, its own resource load state may not be mitigated.
- the RN triggers the mobile load balancing according to the indication information sent by the DBS.
- the UE is used to switch the UE located at the cell edge location under the RN to the cell under the BS.
- the number of UEs in the coverage of the RN is reduced, so that the transmission resources occupied by the relay link between the RN and the DBS can be reduced, thereby further reducing the resource load state of the DBS, and realizing the relationship between the cell under the DBS and the cell under the BS. Load balancing.
- the RN triggers a mobile load balancing process according to the indication information sent by the DBS.
- the neighboring cell is a cell under the BS.
- the triggering mobile load balancing process includes:
- S301 The RN sends a resource status request message to the DBS.
- the DBS forwards the foregoing resource status request message to the BS.
- S305 The BS periodically sends a resource status update message to the DBS.
- the RN performs the determination of the target cell according to the load state information of the BS carried in the resource status update message, and is used to switch the UE located at the cell edge location of the RN to the target cell.
- the resource status request message carries a cell identifier that needs to be reported by the load status information.
- the cell identifier is a cell identifier of a cell under the BS.
- the foregoing cell identifier may be an Evolved Cell Global Identifier (ECG).
- the load status information may include radio resource load status information of the cell under the BS, hardware load status information of the BS, and at least one load status information of the transport network layer resource load status information of the S1 interface of the BS.
- the radio resource load status information of the cell under the BS may be obtained by the UE occupying the usage of the physical resource block of the BS, and the radio resource load status of the cell under the BS may be through the L2 layer of the protocol stack on the BS side.
- the measurement mechanism is determined.
- the hardware load status information of the BS may be a hardware usage situation in the BS, such as in the BS.
- the usage rate of the CPU, or the remaining space size of the BS buffer, and the like, and the hardware load state of the BS can also be determined by the hardware module.
- the S1 interface transmission network layer resource load status information of the BS may be a bandwidth usage situation of the BS on the S1 interface, and the S1 interface transmission network layer resource load status of the BS may be determined by the transmission resource management module.
- determining the transport network layer resource load status information of the S1 interface of the BS may include the following steps: the BS learns the transmission bandwidth configuration of the S1 interface by using the transmission resource management module; and the BS performs performance management measurement on the IP layer of the BS side protocol stack. Technology, determining the data packet loss rate on the S1 interface.
- the packet loss rate of the uplink data of the S1 interface may be determined.
- the packet loss rate of the downlink data of the S1 interface may also be determined.
- the BS can know the transmission network layer resource load status of the S1 interface by using a predetermined algorithm.
- the BS After receiving the request indication of the load status information specified in the resource status request message, the BS acquires corresponding load status information, such as radio resource load status information of the cell under the BS, or hardware load status information of the BS, Or, the transmission network layer resource load status information of the S1 interface of the BS.
- load status information such as radio resource load status information of the cell under the BS, or hardware load status information of the BS, Or, the transmission network layer resource load status information of the S1 interface of the BS.
- the BS carries the acquired load status information in the resource status update message, and reports the status to the RN periodically through the DBS.
- the resource status request message has a request indication of the radio resource load status information of the cell under the BS
- the resource status update message sent by the BS to the RN carries the radio resource load status information of the cell under the BS.
- the resource status request message has a request for radio resource load status information of the cell under the BS, and the BS cannot acquire the radio resource load status information of the cell, the BS sends a resource status failure message to the RN.
- the RN performs the determination of the target cell according to the resource status update message reported by the BS, and is used to switch the UE located at the cell edge location of the RN to the target cell. For example, the RN can adjust the cell offset (CdllndOffset, CIO) to make it easier to touch.
- CdllndOffset CIO
- the measurement reporting event of the UE located at the cell edge location under the RN facilitates the handover of the UE to the target cell.
- a person skilled in the art can understand that the foregoing handover of the UE in the RN to the target cell can also be implemented in other manners, and details are not described herein again.
- the UE located at the cell edge location of the RN is switched to the cell under the BS according to the load condition of the cell under the DBS, so that load balancing between the cell under the DBS and the cell under the BS is implemented, thereby making the network Maximize resource utilization, which in turn increases system capacity and system performance.
- a communication method provided by the second embodiment of the present invention is as shown in FIG. 4, and includes:
- the BS sends a message requesting to acquire the load state information of the network layer of the S1 interface to the RN;
- the DBS sends the S1 interface transmission network to the BS according to the transport network layer load status information of the first S1 interface between the DBS and the RN, and the transport network layer load status information of the second S1 interface between the DBS and the SGW.
- Layer load status information
- the BS determines, according to the S1 interface transmission network layer load status information, whether to switch at least one UE below it to a cell in the RN.
- the BS may send a message to the RN requesting to acquire the load state information of the network layer of the S1 interface through the DBS.
- the BS sends a message requesting to acquire the resource status, such as a resource status request message, to the RN through the DBS.
- the RN After receiving the resource status request message, the RN will report the corresponding load status information according to the request indication of the load status information carried in the resource status request message.
- the load status information may be radio resource load status information of a cell under the RN, or hardware load status information of the RN, or at least one load status information of the transport network layer load status information of the S1 interface of the RN.
- a method for obtaining the radio resource load status information of the cell under the RN or the hardware load status information of the RN may be referred to the radio resource load status information of the cell under the BS in the first embodiment, or the BS.
- the method of hardware load status information is not described here.
- the S1 interface transmits network layer load state information, which may be carried in the RN resource.
- the status update message is reported to the BS.
- the transport network layer load state information of the S1 interface reported by the DBS to the BS in this embodiment is a comprehensive consideration of the transmission of the DBS according to the first S1 interface between the DBS and the RN.
- the network layer load status information, and the transport network layer load status information of the S1 interface obtained after transmitting the network layer load status information of the second S1 interface between the DBS and the SGW.
- the RN Since there is no interface connection between the RN and the SGW, the RN cannot directly obtain the transport network layer load status information of the S1 interface between the DBS and the SGW (hereinafter referred to as the transport network layer load status information of the second S1 interface).
- the DBS Because the DBS has an interface connection with the SGW, the DBS can obtain the transport network layer load status information of the second S1 interface.
- the DBS can also obtain the transport network layer load state information of the S1 interface between the DBS and the RN (hereinafter referred to as the transport network layer load of the first S1 interface). status information) .
- the method further includes:
- the DBS is Transmitting, by the BS, transport network layer load status information of the first S1 interface;
- the DBS Transmitting, by the BS, transport network layer load status information of the second S1 interface;
- the DBS When the transport network layer load status information carried by the transport network layer load status information of the first S1 interface is equal to the transport network layer load status information of the second S1 interface, carrying the transport network layer load value, the DBS is The BS sends the transport network layer load status information of the first S1 interface or the transport network layer load status information of the second S1 interface.
- the transport network layer load of the S1 interface between the RN and the DBS is in a neutral state
- the transport network layer load of the SI interface between the DBS and the S-GW is in an overload state
- the transport network layer load state information of the S1 interface carried by the DBS to the BS is updated. That is, the second S1 interface transmits network layer load status information.
- the transport network layer load of the S1 interface between the RN and the DBS is in a neutral state
- the transport network layer load of the S1 interface between the DBS and the S-GW is also in a neutral state
- the DBS goes to the BS.
- the transport network layer load status information of the S1 interface carried by the sent resource status update message is the medium load status information, that is, the first S1 interface transport network layer load status information or the second S1 interface transport network layer load status information.
- the DBS sends the load to the BS.
- the transport network layer load status information of the S1 interface carried in the resource status update message is overload status information, that is, the first S1 interface transmits network layer load status information.
- the BS performs the determination of the target cell according to the resource status update message. If the target cell is determined to be a cell under the RN, the BS indicates that the UE located at the cell edge location thereof switches to the cell under the RN. For example, the BS can adjust the cell offset amount (CelllndOffset, CIO) to make it easier to trigger the measurement reporting event of the UE, which is convenient for speeding the handover of the UE to the cell under the RN.
- CIO cell offset amount
- the UE in the BS can be switched to the cell in the RN according to the resource load of the BS, so that load balancing between the cell under the BS and the cell under the RN is implemented, thereby maximizing network resource utilization. , thereby increasing system capacity and system performance.
- a communication method provided by the third embodiment of the present invention is as shown in FIG. 5, and includes:
- S501 The BS sends a resource status request message to the RN.
- S502 The DBS sends the transport network layer load status information of the first SI interface to the RN.
- the DBS receives a resource status update message that is sent by the RN and carries transport network layer load status information of the first SI interface.
- the DBS sends a resource status update message of the RN to the BS according to the resource status update message of the RN and the transport network layer load status information of the second S1 interface.
- the BS receives a resource status update message of the RN, and is configured to switch at least one UE under the RN to the RN.
- S501 in this embodiment is the same as S401 in the second embodiment, and details are not described herein again.
- the BS when the resource load of the BS is too heavy, for example, an overload or a heavy load occurs, the BS sends a resource resource status request message to the RN through the DBS, so as to facilitate handover of the UE under the BS to the cell under the RN.
- the resource status request message carries the request indication of the transport network layer load status information of the S1 interface
- the RN carries the first S1 interface transport network layer load status information in the resource status update message, and reports it to the DBS.
- the RN cannot directly obtain the load state information of the first S1 interface transmission network layer, so the DBS needs to obtain the first S1 interface to transmit the network layer load state information and then The RN is sent to the RN, and is used by the RN to receive the network state load state information of the first S1 interface and carry it in the resource status update message to report the BS.
- the DBS may send the network layer load state information of the first S1 interface to the RN through the RRC signaling or the control signaling of the X2 interface or the control signaling of the S1 interface.
- the load status information of the RN carried in the resource status update message of the RN is reported, and the request indication of the load status information in the BS resource status request message is determined.
- the resource status request message carries the request indication of the hardware load status information
- the resource status update message reported by the RN needs to carry the hardware load status information of the RN.
- the request indication of the load status information in the BS resource status request message may also be a request for radio resource load status information of a cell under the RN or a S1 interface of the RN to transmit network layer load status information. Instructions, no more details here.
- the DBS transmits the network layer load status information carried in the first S1 interface and the second S1 interface transmission network layer load status information carried in the load status update message of the RN to the BS. And sending, by the RN, a load status update message, where the BS determines whether to switch the UE under it to the cell under the RN.
- the UE under the BS can be handed over to the cell under the RN according to the load condition of the BS, and load balancing between the cell under the BS and the RN is implemented, thereby maximizing network resource utilization, thereby improving system capacity. And system performance.
- a communication method provided by the fourth embodiment of the present invention is as shown in FIG. 6, and includes:
- S601 The BS sends a resource status request message to the RN.
- the DBS receives the load status update message sent by the RN, where the load status update message does not carry the first S1 interface transmission network layer load status information.
- the DBS sends the load status update message of the RN to the BS according to the first S1 interface transmission network layer load status information acquired by the first S1 interface and the second S1 interface transmission network layer load status information.
- the BS receives a load status update message of the RN, and is configured to switch a UE under it to the RN.
- S601 in this embodiment is the same as S401 in the second embodiment, and details are not described herein again.
- the BS when the BS resource load is too heavy, for example, an overload or a heavy load occurs, the BS sends a resource status request message to the RN through the DBS, so as to facilitate handover of the UE under the BS to the cell under the RN.
- the DBS may cancel the request indication of the transport network layer load status information of the S1 interface in the resource status request message, and update the resource status.
- the request message is sent to the RN.
- the BS requests the RN to perform the reporting of the transport network layer load status information of the S1 interface, and the DBS may cancel the SI TNL Load Indicator field (SI interface) carried in the resource status request message when forwarding the resource status request message sent by the BS to the RN.
- Transport network layer load status Information (SI interface) carried in the resource status request message when forwarding the resource status request message sent by the BS to the RN.
- the SI TNL Load Indicator field is a request indication of transport network layer load status information of the SI interface. In this way, when the RN reports its own load status information to the DBS, there is no report of the SI TNL Load Indicator field in the updated resource status update message reported by the RN. In other words, the updated resource status reported by the RN.
- the DBS itself can obtain the network layer load status information by acquiring the first SI interface, and comprehensively consider the second S1 interface transmission network layer load status information to determine the reporting of the RN resource status update message.
- the DBS transmits the network layer load state information according to the first S1 interface that is acquired by itself, and the second S1 interface transmits the network layer load.
- Status information sending a load status update message of the RN to the BS, for the BS to determine whether to switch the UE under it to the RN.
- the UE under the BS can be switched to the cell in the RN according to the load condition of the BS, and load balancing between the cell under the BS and the cell under the RN is implemented, thereby maximizing network resource utilization. In turn, increase system capacity and system performance.
- the foregoing storage medium includes the following: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
- a fifth embodiment of the present invention provides a relay node, and the main structure thereof can be referred to as shown in FIG. 7, and includes:
- the receiving unit 701 is configured to receive indication information that is sent by the DBS serving the RN.
- the processing unit 702 is configured to perform mobile load balancing processing according to the indication information, and switch at least one UE in the RN lower cell to a cell in the BS.
- the receiving unit 701 is further configured to receive, by the BS that is forwarded by the DBS, a message for acquiring an S1 interface to transmit network layer load state information, and a first between the DBS and the RN sent by the DBS.
- the S1 interface transmits network layer load status information.
- the relay node further includes a sending unit 703, configured to send a message carrying the load state information of the first S1 interface transmission network layer to the DBS.
- the sending unit 703 is further configured to: when the DBS cancels the request for acquiring the load state information of the S1 interface in the message for acquiring the network layer load state information of the S1 interface, the sending unit 703 does not carry the first A message conveying network layer load status information by an S1 interface is sent to the DBS.
- the relay node may implement the actions performed by the relay node in the mobile load balancing processing method of the first to fourth embodiments.
- the receiving unit 701 may perform the action of S101 in the first embodiment. Therefore, in this embodiment, the UE in the cell under the RN can be switched to the cell in the BS according to the load condition of the DBS, and the load balancing between the cell under the DBS and the cell under the BS is implemented, thereby making network resource utilization. Maximize, thereby increasing system capacity and system performance.
- a sixth embodiment of the present invention provides a host base station, and its main structure can be referred to as shown in FIG. 8, which includes:
- the detecting unit 801 is configured to detect whether the transport network layer resource of the S1 interface between the host base station DBS and the relay node RN under the host base station DBS exceeds a first mobile load balancing trigger threshold, or detect the host base station Whether the hardware resource of the DBS exceeds the second mobile load balancing trigger threshold, or detects whether the transport network layer resource of the S1 interface between the host base station DBS and the serving gateway SGW exceeds a third mobile load balancing trigger threshold, or detects the host Whether the radio resource load of the cell under the base station DBS exceeds the fourth mobile load balancing trigger threshold; and
- the first processing unit 802 is configured to send indication information to the RN, where the at least one user equipment UE of the cell under the RN is switched to a cell in the base station BS.
- the host base station further includes a second processing unit 803, configured to use the DBS and the Transmitting network layer load status information between the RNs and the second S1 interface transmission network layer load status information between the DBS and the SGW, and transmitting the S1 interface transmission network layer load status to the BS
- the information is used to switch the UE in the cell under the BS to the cell in the RN.
- the second processing unit 803 is further configured to:
- the first S1 interface transmits network layer load status information;
- the first S1 interface transmits network layer load status information or the second S1 interface transmits network layer load status information.
- the host base station further includes a sending unit 804, configured to send the first S1 interface to transmit network layer load status information to the RN, and a receiving unit 805, configured to receive, by the RN, the carrying An S1 interface transmits a message of network layer load status information.
- the receiving unit 805 is further configured to receive, by the BS, a message for requesting to acquire the load state information of the network layer of the S1 interface, where the message is a resource status request message.
- the receiving unit 805 is further configured to receive, by the RN, a message that does not carry the first S1 interface transmission network layer load status information.
- the host base station may implement the actions performed by the host base station in the mobile load balancing processing method in the foregoing first to fourth embodiments.
- the first processing unit 802 may perform the action of S602 in the fourth embodiment. Therefore, in this embodiment, the UE in the cell under the BS is switched to the cell in the RN according to the load condition of the BS, and the cell under the RN and the cell under the BS are implemented. Load balancing between cells maximizes network resource utilization, which in turn increases system capacity and system performance.
- a seventh embodiment of the present invention provides a communication system.
- the main structure of the present invention is as shown in FIG. 9, which includes:
- relay node RN901 a relay node RN901, and a host base station DBS902;
- the host base station DBS 902 configured to send indication information to the relay node RN 901;
- the relay node RN901 is configured to perform mobile load balancing processing according to the indication information, and switch at least one UE in the lower cell to the cell in the base station BS.
- the DBS 902 is further configured to: detect whether a transport network layer resource of the S1 interface between the DBS and the RN exceeds a first mobile load balancing trigger threshold, or detect whether a hardware resource of the DBS exceeds a second mobility.
- the load balancing trigger threshold is detected, or whether the transmission network layer resource of the S1 interface between the DBS and the serving gateway SGW exceeds a third mobile load balancing trigger threshold, or whether the radio resource load of the cell under the DBS exceeds a fourth mobility Load balancing trigger threshold.
- the DBS 902 is further configured to transmit network layer load state information according to the first S1 interface between the DBS 902 and the RN 901, and a second S1 interface transmission network layer between the DBS 902 and the serving gateway SGW.
- the load status information sends an S1 interface transmission network layer load status information to the BS, and is used to switch at least one UE in the BS under the cell to the cell under the RN91.
- the RN 901 is further configured to receive, by the DBS 902, the message that the S1 interface transmits network layer load status information, and the first S1 interface transmission network layer load status sent by the DBS 902 information.
- the RN 901 is further configured to send a resource status update message of the RN 901 to the DBS 92.
- the communication system includes the DBS and the RN in the first to sixth embodiments, and can implement the actions performed by the DBS and the RN in the above embodiment.
- the cell under the BS The UE in the RN is switched to the cell in the RN; or, in the case of the load of the DBS, the UE in the cell under the RN is switched to the cell in the BS, and the cell under the RN, the cell under the DBS, and the cell under the BS are implemented.
- Load balancing which maximizes network resource utilization, thereby increasing system capacity and system performance.
- modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment.
- the modules of the embodiments may be combined into one module, or may be further split into multiple sub-modules.
- the division of the device modules in the embodiments of the present invention is a functional division, and the actual specific structure may be the splitting or merging of the above functional modules.
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Abstract
本发明公开了一种移动负载均衡处理方法,该方法包括:宿主基站DBS发送指示信息至所述宿主基站DBS下的中继节点RN;所述宿主基站DBS经由所述指示信息指示所述中继节点RN进行移动负载均衡处理,用以将所述中继节点RN下的小区中的至少一个用户设备UE切换到相邻小区。本发明还公开了一种中继节点、宿主基站、和通讯装置。本发明可以通过UE的切换,调整UE的附着小区,使得引入RN后,各小区之间实现负载均衡,从而使得网络资源利用率最大化,进而提高系统容量以及系统性能。
Description
移动负载均衡处理方法、 中继节点、 宿主基站、 和通讯系统 技术领域
本发明涉及通信技术, 具体涉及一种移动负载均衡处理技术。 背景技术
在传统网络中,基站( base station;筒称 BS )和用户设备 (user equipment, 筒称 UE)之间是直接的无线连接。 随着通信技术的发展, 引入了中继技术, 即在 BS和 UE之间增加一个或多个中继节点 ( relay node, 筒称 RN ), RN 负责将 BS发送的无线信号做一次或多次信号转发, 最后到达 UE。 比如, 一个 RN可以将一个 BS和 UE的无线链路分割为 BS至 RN和 RN至 UE两 个无线链路, 从而可以将一个质量较差的链路替换为两个质量较好的链路, 以获得更高的链路容量及更好的覆盖。
以 LTE技术为例, BS之间可以通过 X2接口相连接。 在引入 RN之后, RN和其宿主基站 (Donor BS, 筒称 DBS )之间存在 S1/X2接口, 因此, DBS将为 RN和其他网络节点之间提供 S1/X2接口的代理 (proxy ) 功能。 例如: DB S为 RN和移动管理实体( mobility management entity ,筒称 ΜΜΕ ) 之间提供 SI接口的代理功能, 为 RN和服务网关 (serving gateway, 筒称 SGW )之间同样提供 SI接口的代理 (proxy ) 功能, 以及为 RN和 BS之间 提供 X2接口的代理功能。 换句话说, RN和 BS之间传递的信息需要通过 DBS进行处理转发。 引入 RN后, DBS可以为 UE提供服务, 同样, 受 DBS 控制的 RN也可以作为一个基站向 UE提供服务。
现有技术中, 当 UE移动时, UE位置的随机性、 业务的多样性, 都 有可能导致某些小区的负载过重, 甚至发生拥塞, 而上述小区的相邻小 区的负载可能很轻的情况。 上述小区和其相邻小区是指这两个小区的信
号覆盖范围存在交集。 例如, 如果两个小区之间存在着相互重叠的信号 覆盖范围, 则这两个小区相互之间构成相邻关系, 互为对方的相邻小区。 同样, 当向上述相邻小区提供服务的基站的数量超过一个时, 上述基站 也可以相互称为相邻基站。
其中, 减轻上述小区负载过重的一种可行方式就是通过小区之间的 协商, 例如通过小区和其相邻小区间的协商。 例如, 负载过重的小区请 求负载较轻的相邻小区分担一部分 UE产生的负载,也就是将位于负载过 重小区边缘位置的 UE切换至负载较轻的相邻小区, 以便达到小区之间的 负载均衡, 从而实现网络资源的利用率最大化, 进而提高系统容量以及 系统性能。
但是到目前为止, 还没有一种有效的方法, 可以解决引入 RN后各小 区之间的移动负载均衡问题。 发明内容
本发明通过提供一种移动负载均衡处理方法、 中继节点、 宿主基站、 及通讯系统, 解决了引入 RN后各小区之间的移动负载均衡问题。
为解决上述技术问题, 本发明一方面提供一种移动负载均衡处理方法, 包括:
宿主基站 DBS发送指示信息至所述宿主基站 DBS下的中继节点 RN; 所述宿主基站 DBS经由所述指示信息指示所述中继节点 RN进行移动 负载均衡处理, 用以将所述中继节点 RN 下的小区中的至少一个用户设备 UE切换到相邻小区。
本发明的又一方面提供一种移动负载均衡处理方法, 包括:
中继节点 RN接收服务于所述中继节点 RN的宿主基站 DBS发送的指 示信息; 及
所述中继节点 RN根据所述指示信息触发移动负载均衡处理,用以将所
述中继节点 RN下小区中的至少一个用户设备 UE切换到相邻小区中。 本发明的另一方面提供一种宿主基站, 包括:
检测单元,用于检测所述宿主基站 DBS和所述宿主基站 DBS下的中继 节点 RN之间的 S1接口的传输网络层资源是否超过第一移动负载均衡触发 门限, 或检测所述宿主基站 DBS的硬件资源是否超过第二移动负载均衡触 发门限,或检测所述宿主基站 DBS和服务网关 SGW之间的 S1接口的传输 网络层资源是否超过第三移动负载均衡触发门限, 或检测所述宿主基站 DBS下小区的无线资源负载是否超过第四移动负载均衡触发门限; 及
第一处理单元, 用于发送指示信息至所述中继节点 RN, 用于将所述中 继节点 RN下小区的至少一个用户设备 UE切换到相邻小区中。
本发明的再一方面提供一种中继节点, 包括:
接收单元, 用于接收服务于所述中继节点 RN的宿主基站 DBS发送的 指示信息;
处理单元, 用于根据所述指示信息进行移动负载均衡处理, 将所述中 继节点 RN下小区中的至少一个用户设备 UE切换到相邻小区中。
本发明的再一方面提供一种通讯系统, 包括:
一中继节点 RN, 及一服务于所述中继节点 RN的宿主基站 DBS; 所述宿主基站 DBS, 用于发送指示信息至所述中继节点 RN;
所述中继节点 RN, 用于根据所述指示信息进行移动负载均衡处理, 将 所述中继节点 RN下小区中的至少一个用户设备 UE切换到相邻小区中。
由上可见, 本发明通过 UE的切换, 以调整 UE的附着小区, 使得引入 RN后, 各小区之间实现负载均衡, 从而使得网络资源利用率最大化, 进而 提高系统容量以及系统性能。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对
实施例或现有技术描述中所需要使用的附图作一筒单地介绍, 显而易见地 , 下面描述中的附图是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例提供的网络架构图;
图 2为本发明第一实施例提供的移动负载均衡处理方法的流程图; 图 3为本发明第一实施例提供的触发移动负载均衡处理的流程图; 图 4为本发明第二实施例提供的移动负载均衡处理方法的流程图; 图 5为本发明第三实施例提供的移动负载均衡处理方法的流程图; 图 6为本发明第四实施例提供的移动负载均衡处理方法的流程图; 图 7为本发明第五实施例提供的中继节点的结构示意图;
图 8为本发明第六实施例提供的宿主基站的结构示意图;
图 9为本发明第七实施例提供的通讯系统的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动的前 提下所获得的所有其他实施例, 都属于本发明保护的范围。
本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图中 的模块或流程并不一定是实施本发明所必须的。
本发明的不同实施例可以应用的通信系统中, 包括至少一个第一 RN、 至少一个服务于所述第一 RN的第一 DBS、 及至少一个基站或中继站。 上述基站可以为第二 DBS, 也可以为 BS, 上述中继站可以为第二 RN。 例如, 本发明的不同实施例可以应用于如图 1所示的通信系统, 包括一 个 RN, —个良务于所述 RN的 DBS , 及一个 BS, 并且以下针对不同实
施例的描述均引用如图 1 所示的场景。 本领域的技术人员可以理解, 当 BS向 DBS发送信息时, 所述 BS可以称为源基站; 当 BS接收 DBS发 送的信息时, 所述 BS可以称为目标基站。 并且, 在其他通信系统中(未 图示), 本发明的不同实施例可以应用的通信系统, 可以包括至少一个第 一 RN、至少一个服务于所述第一 RN的第一 DBS、及至少一个第二 DBS; 或者, 上述通信系统也可以包括至少一个第一 RN、 至少一个服务于所述 第一 RN的第一 DBS、 及至少一个第二 RN, 在此不再赞述。
本发明的不同实施例中的所述 RN位于所述 DBS下, 且所述 RN受 所述 DBS的控制。 所述 DBS、 及 BS分别服务于一个或多个小区。 本领 域的技术人员可以理解, 所述 DBS 可以为宏基站, 或者为微基站; 所述 BS也可以为宏基站, 或者为微基站, 但本发明各实施例并不仅限于此。
本发明的不同实施例中的位于 DBS下的小区与位于 BS下的小区可以 相互称为相邻小区, 位于 RN下的小区与位于 BS下的小区也可以相互 称为相邻小区。 本领域的技术人员可以理解, 在其他通信系统中 (未图 示), 如上述通讯系统包括至少一个第一 RN、 至少一个服务于所述第一 RN的第一 DBS、 及至少一个第二 DBS, 位于第一 DBS下的小区与位于 第二 DBS下的小区可以相互称为相邻小区,位于第一 RN下的小区与位 于第二 DBS下的小区也可以相互称为相邻小区。 或者, 当上述通信系统 包括至少一个第一 RN、 至少一个服务于所述第一 RN的第一 DBS、 及至 少一个第二 RN时, 位于第一 DBS下的小区与位于第二 RN下的小区可 以相互称为相邻小区, 位于第一 RN下的小区与位于第二 RN下的小区 也可以相互称为相邻小区, 在此不再赞述。
如图 1所示, DBS与 UE间的接口, BS 与 UE间的接口, 以及 RN与 UE间的接口都属于 Uu接口 (以下筒称空口) , 上述 Uu接口主要用于控 制面的信令以及用户面数据的传送。 RN和 DBS之间也可以经由空口建立 通讯连接。 例如, RN和 DBS之间可以通过 RN侧、 及 DBS侧的协议栈上
无线资源控制层( Radio Resource Control, 筒称 RRC )建立 RN和 DBS之 间的通讯连接。 DBS与 RN之的 S1接口, 主要用于 S1控制信令以及中继 链路(backhaul )的数据传送。 本领域的技术人员可以理解, 上述中继链路 用于 DBS与 RN间的通讯。 DBS与 SGW之间的 S1接口, 主要用于用户 面数据的传送。 DBS与 MME之间的 S1接口, 主要用于 S1控制信令的传 送。 DBS与 RN之间, 及 DBS和 BS之间的 X2接口, 主要用于 X2控制信 令的传送。
在本发明的实施例中, DBS负责 RN和 DBS之间中继链路的资源分配, 并通过 RN和 DBS之间建立的 S1接口,进行中继链路的数据传送。对 DBS 而言, 其空口资源优先用于中继链路的数据或 S1/X2控制信令的传送, 然 后再用于提供覆盖。 例如, DBS会先保证 DBS与 RN间的数据或控制信令 的传送, 其次再提供 DBS与 UE间的数据或控制信令的传送。 也就是说, RN和 DBS之间的传输资源由 DBS动态分配和调整。 本领域的技术人员可 以理解, DBS可以根据 RN覆盖范围内向 RN下的 UE传送的数据量大小来 动态调整或分配 RN与 DBS间的传输资源,例如, RN覆盖范围内向 RN下 的 UE传送的数据量比较大, 则 DBS为 RN和 DBS之间的中继链路多分配 一些传输资源, 以供所述 UE数据的传输, 在此不再赘述。
在本发明的实施例中,当 DBS下的小区负载过重时, DBS可以通知 RN 将处于 RN下的小区边缘位置的 UE切换至 BS下的负载较轻的小区。 当该 BS下的小区负载过重时, 也可以将其下的处于上述小区边缘位置的 UE切 换至 RN下的负载较轻的小区, 以便在 DBS下的小区和 BS下的小区, 以 及 BS下的小区和 RN下的小区之间实现负载均衡,从而使得网络资源利用 率最大化, 进而提高系统容量以及系统性能。
以下, 结合附图对各具体实施例进行详细说明。
本发明第一实施例提供的一种通讯方法参照如图 2所示, 包括:
S101: DBS发送指示信息至所述 DBS下的 RN;
S102: 所述 RN根据所述指示信息进行移动负载均衡的处理, 用以将所 述 RN下的至少一个 UE切换到相邻小区中。
在 S101中, 当以下至少一个条件满足时,将触发所述 DBS向所述 RN发送 所述指示信息:
所述 DBS检测到所述 DBS和所述 RN之间的 S1接口的传输网络层资源超 过第一移动负载均衡触发门限。 例如, 所述 DBS和所述 RN之间的 S1接口的 传输网络层资源负载过重; 又如, 所述 DBS和所述 RN之间的 S1接口的传输 网络层资源发生重载或者超载; 再如, 可以根据预定数值确定所述 DBS和 所述 RN之间的 S1接口的传输网络层资源是否超过第一移动负载均衡触发 门限。
或者, 所述 DBS检测到自身的硬件资源超过第二移动负载均衡触发门 限。 例如, 所述 DBS的硬件资源负载过重; 又如, 所述 DBS的硬件资源发生 重载或者超载; 再如, 可以根据预定数值确定所述 DBS的硬件资源是否超 过第二移动负载均衡触发门限。
又或者,所述 DBS检测到所述 DBS和 SGW之间的 S1接口的传输网络层资 源超过第三移动负载均衡触发门限。 例如, 所述 DBS和 SGW之间的 S1接口 的传输网络层资源负载过重; 又如, 所述 DBS和 SGW之间的 S1接口的传输 网络层资源发生重载或者超载; 再如, 可以根据预定数值确定所述 DBS和 S GW之间的 S 1接口的传输网络层资源是否超过第三移动负载均衡触发门 限。
再或者, 所述 DBS检测到其无线资源负载超过第四移动负载均衡触发门 限。 例如, 所述 DBS的无线资源负载负载过重; 又如, 所述 DBS的无线资源 负载发生重载或者超载; 再如, 可以根据预定数值确定所述 DBS的无线资 源负载是否超过第四移动负载均衡触发门限。 上述 DBS的无线资源负载可 由 UE和 RN共同占用所述 DBS的物理资源块( Physical resource block, 筒称 PRB ) 的使用情况得到。
在本实施例中, 上述第一至第四移动负载均衡触发门限可为根据预定方 式确定的数值。 本领域技术人员可以理解, 上述移动负载均衡触发门限也 可以根据其他方式确定, 在此不再赘述。
上述指示信息用于指示 RN触发移动负载均衡的处理。 例如: 当 RN收 到 DBS发送的所述指示信息后, 将触发 RN向 BS发送资源状态请求消息 ( Resource Status Request ),并根据 BS上报的 BS下的各小区的负载状态信 息进行目标小区的确定。 随后, RN指示处于其小区边缘位置的 UE切换至 上述目标小区, 从而实现 DBS下的小区和 BS下的小区之间的负载均衡。 在本发明的不同实施例中, 上述目标小区指的是切换完成后, UE所位于的 小区。 例如, 上述目标小区可以为 BS下的负载较轻的小区。 本领域的技术 人员可以理解,上述小区边缘位置可以通过预定方式获取,并且 RN将处于 其小区边缘位置的 UE切换至上述目标小区可以为将 RN下小区中的至少一 个 UE切换至上述目标小区, 在此不再赘述。
在本实施例中, 可以通过在现有消息中增加新参数来携带所述指示信 息, 也可以通过新定义的消息来携带所述指示信息, 在此不再赘述。
由于 DBS负责 RN和 DBS之间中继链路的资源分配和调整, 造成 RN 无法及时准确的获取其与 DBS之间 S1接口的传输网络层资源负载信息。 此外, 如果 DBS覆盖范围内部署了多个 RN, 则 DBS大部分传输资源都用 于与 RN间中继链路的回程,从而导致直接附着在 DBS下的 UE数量不多。 一旦 DBS下的小区由于资源负载过重而触发移动负载均衡流程时, 则上述 DBS通过将位于上述小区边缘位置的 UE切换到所述 BS下的小区(也可以 理解为目标小区)的方式来降低上述 DBS下的小区的资源负载过重的状态。 但, 如果位于上述 DBS下小区的边缘位置的 UE数量不多时, 即使 DBS将 上述 UE全都切换到目标小区,其自身的资源负载状态还是可能无法得到緩 解。
在本实施例中, RN根据 DBS发送的指示信息来触发移动负载均衡的处
理, 用于将位于 RN下的小区边缘位置的 UE切换到 BS下的小区中。 由于 RN覆盖范围内的 UE个数减少,可以降低 RN与 DBS间的中继链路所占用 的传输资源,从而进一步降低 DBS的资源负载状态, 实现 DBS下的小区和 BS下的小区之间的负载均衡。
在 S102中, 进一步参考图 3所示, RN根据 DBS发送的指示信息, 触 发移动负载均衡处理, 在本实施例中, 所述相邻小区为 BS下的小区。
所述触发移动负载均衡处理包括:
S301: RN向 DBS发送资源状态请求消息;
S302: DBS向 BS转发上述资源状态请求消息;
S303: BS向 DBS返回资源状态响应消息;
S304: DBS向 RN转发上述资源状态响应消息;
S305: BS周期性的向 DBS发送资源状态更新消息;
S306: DBS将上述资源状态更新消息转发给 RN;
S307: RN根据上述资源状态更新消息中携带的 BS的负载状态信息进 行目标小区的确定,用于将位于 RN下的小区边缘位置的 UE切换到目标小 区中。
在 S301和 S302中,上述资源状态请求消息中携带了需要进行负载状态 信息上报的小区标识, 在本实施例中, 上述小区标识为 BS下的小区的小区 标识。例如,上述小区标识可以为演进的小区全局标识(Evolved Cell Global Identifier, 筒称 ECGI )。
在 S305中,负载状态信息可以包括 BS下的小区的无线资源负载状态信 息、 BS的硬件负载状态信息、 BS的 S1接口的传输网络层资源负载状态信 息的至少一种负载状态信息。 例如, BS下的小区的无线资源负载状态信息 可以由 UE占用所述 BS的物理资源块的使用情况得到, 并且所述 BS下的 小区的无线资源负载状态可以通过 BS侧的协议栈 L2层上的测量机制确定。 又如, BS的硬件负载状态信息可以为 BS中的硬件使用情况, 如 BS中的
CPU的使用率, 或者 BS緩沖区的剩余空间大小等, 并且所述 BS的硬件负 载状态也可以通过硬件模块确定。 再如, BS的 S1接口传输网络层资源负 载状态信息可以为 BS在 S1接口的带宽使用情况, 并且所述 BS的 S1接口 传输网络层资源负载状态可以通过传输资源管理模块确定。 具体而言, 确 定 BS的 S1接口的传输网络层资源负载状态信息可以包括如下步骤: BS 通过传输资源管理模块获知 S1接口的传输带宽配置; BS通过 BS侧协议 栈的 IP层上的性能管理测量技术, 确定 S1接口上的数据丢包率。 例如, 根据上行链路中 BS发送的数据包和 SGW收到的数据包, 可以确定 S1接 口上行数据的丢包率。 又如, 根据下行链路中 SGW发送的数据包和 BS收 到得数据包, 也可以确定 S1接口下行数据的丢包率。 最后, 根据以上获取 的信息, 通过预定算法, BS就可以获知 S1接口的传输网络层资源负载状 态。
在 S305中, BS接收到资源状态请求消息中指定的负载状态信息的请求 指示后, 获取相应的负载状态信息, 如 BS下的小区的无线资源负载状态信 息、 或者, BS的硬件负载状态信息、 又或者, BS的 S1接口的传输网络层 资源负载状态信息。
在 S306中, BS将获取到的负载状态信息携带在资源状态更新消息中, 周期性的通过 DBS向 RN进行上报。例如, 当资源状态请求消息具有对 BS 下的小区的无线资源负载状态信息的请求指示时, BS向 RN发送的资源状 态更新消息承载有 BS下的小区的无线资源负载状态信息。 又如, 当资源状 态请求消息具有对 BS下的小区的无线资源负载状态信息的请求, 而 BS无 法获取上述小区的无线资源负载状态信息时, BS向 RN发送资源状态失败 消息。
在 S307中, RN根据 BS上报的资源状态更新消息, 进行目标小区的确 定, 用于将位于 RN下小区边缘位置的 UE切换到上述目标小区中。 例如, RN可以通过调整小区偏置量(CdllndOffset, 筒称 CIO ) , 以便更容易触
发 RN下的位于小区边缘位置的 UE的测量上报事件, 有利于加快将上述 UE切换到目标小区中。 本领域的技术人员可以理解, 上述将 RN下的 UE 切换到目标小区还可以通过其他方式实现, 在此不再赘述。
故, 本实施例可以根据 DBS下的小区的负载情况, 将位于 RN下小 区边缘位置的 UE切换至 BS下的小区,实现 DBS下的小区和 BS下的小 区之间的负载均衡, 从而使得网络资源利用率最大化, 进而提高系统容量 以及系统性能。
本发明第二实施例提供的一种通讯方法参照如图 4所示, 包括:
S401: BS发送请求获取 S1接口传输网络层负载状态信息的消息至 RN;
S402: DBS根据 DBS和 RN之间的第一 S1接口的传输网络层负载状态信 息、 及 DBS和 SGW之间的第二 S 1接口的传输网络层负载状态信息向 BS发送 所述 S1接口传输网络层负载状态信息;
S403:所述 BS根据所述 S1接口传输网络层负载状态信息确定是否将其下 的至少一个 UE切换至所述 RN下的小区中。
在 S401中, 当 BS资源负载过重时, 例如: 发生重载或超载情况, BS 可以通过 DBS向 RN发送请求获取 S 1接口传输网络层负载状态信息的消息。 在本实施例中, BS通过 DBS向 RN发送请求获取资源状态的消息, 如资源 状态请求消息。 当 RN接收到资源状态请求消息后, 将根据上述资源状态请 求消息中携带的负载状态信息的请求指示, 进行相应负载状态信息的上报。 上述负载状态信息可以为 RN下的小区的无线资源负载状态信息、 或者 RN 的硬件负载状态信息、 又或者 RN的 S1接口的传输网络层负载状态信息中的 至少一个负载状态信息。 本领域的技术人员可以理解, 获取 RN下的小区的 无线资源负载状态信息、 或 RN的硬件负载状态信息的方式可以参考第一实 施例中获取 BS下的小区的无线资源负载状态信息、 或 BS的硬件负载状态信 息的方法, 在此不再赘述。
在 S402中, 所述 S1接口传输网络层负载状态信息可以携带在 RN的资源
状态更新消息中向 BS上报, 例如可以参考第一实施例中的相关描述, 在此 不再赞述。 而本实施例与第一实施例不同之处在于, 本实施例中 DBS向 BS 上报的 S1接口的传输网络层负载状态信息是综合考虑 DBS根据 DBS和 RN之 间的第一 S 1接口的传输网络层负载状态信息、 及 DBS和 SGW之间的第二 S 1 接口的传输网络层负载状态信息后得出的 S1接口的传输网络层负载状态信 息。 由于 RN与 SGW间没有接口连接, 故 RN无法直接获取 DBS和 SGW之间 S1接口的传输网络层负载状态信息 (以下称为第二 S1接口的传输网络层负 载状态信息) 。 而对 DBS而言, 因为 DBS与 SGW间有接口连接, 故 DBS可 以获取第二 S1接口的传输网络层负载状态信息。 同时, 由于 DBS动态分配 DBS和 RN之间的传输资源, 因此, DBS也可以获取 DBS和 RN之间的 S 1接口 的传输网络层负载状态信息 (以下称为第一 S1接口的传输网络层负载状态 信息) 。
具体而言, 在 S402中还包括:
当所述第一 S1接口的传输网络层负载状态信息携带的传输网络层负载 值超过所述第二 S 1接口的传输网络层负载状态信息携带的传输网络层负载 值时,所述 DBS向所述 BS发送所述第一 S1接口的传输网络层负载状态信 息; 或者
当所述第一 S1接口的传输网络层负载状态信息携带的传输网络层负载 值低于所述第二 S 1接口的传输网络层负载状态信息携带的传输网络层负载 值时,所述 DBS向所述 BS发送所述第二 S1接口的传输网络层负载状态信 息; 或者
当所述第一 S1接口的传输网络层负载状态信息携带的传输网络层负载 值等于所述第二 S 1接口的传输网络层负载状态信息携带传输网络层负载值 时,所述 DBS向所述 BS发送所述第一 S1接口的传输网络层负载状态信息 或所述第二 S1接口的传输网络层负载状态信息。
例如, 当 RN与 DBS之间的 S1接口的传输网络层负载处于中载状态,
而 DBS和 S-GW之间的 SI接口的传输网络层负载处于超载状态时, DBS 向所述 BS发送的资源状态更新消息所携带的 S 1接口的传输网络层负载状 态信息为超载状态信息,即为第二 S1接口传输网络层负载状态信息。又如, 当 RN与 DBS之间的 S1接口的传输网络层负载处于中载状态, 而 DBS和 S-GW之间的 S1接口的传输网络层负载也处于中载状态时, DBS 向所述 BS发送的资源状态更新消息所携带的 S1接口的传输网络层负载状态信息 为中载状态信息, 即为所述第一 S1接口传输网络层负载状态信息或所述第 二 S1接口传输网络层负载状态信息。 再如, 当 RN与 DBS之间的 S1接口 的传输网络层负载处于超载状态, 而 DBS和 S-GW之间的 S1接口的传输 网络层负载处于中载状态时, DBS向所述 BS发送的资源状态更新消息所 携带的 S1接口的传输网络层负载状态信息为超载状态信息, 即为第一 S1 接口传输网络层负载状态信息。 本领域的技术人员可以理解, 上述第一 S1 接口传输网络层负载状态信息或第二 S 1接口传输网络层负载状态信息的获 取方式可以参考第一实施例中的 S305相关描述, 在此不再赘述。
在 S403中,所述 BS根据所述资源状态更新消息,进行目标小区的确定, 如果确定目标小区为 RN下的小区, 则 BS指示位于其小区边缘位置的 UE 切换到 RN 下的小区中。 例如, BS 可以通过调整其小区偏置量 ( CelllndOffset, 筒称 CIO ) , 以便更容易触发上述 UE的测量上报事件, 有利于加快将上述 UE切换到 RN下的小区中。本领域的技术人员可以理解, 所述选定 RN并进行 UE的切换可以参考第一实施例中的相关描述,在此不 再赘述。
故, 本实施例可以根据 BS的资源负载情况, 将 BS下的 UE切换至 RN下的小区中, 实现 BS下的小区和 RN下的小区之间的负载均衡, 从 而使得网络资源利用率最大化, 进而提高系统容量以及系统性能。
本发明第三实施例提供的一种通讯方法参照如图 5所示, 包括:
S501: BS发送资源状态请求消息至 RN;
S502: DBS发送第一 SI接口的传输网络层负载状态信息至 RN;
S503: 所述 DBS接收所述 RN发送的携带有所述第一 SI接口的传输网络 层负载状态信息的资源状态更新消息;
S504: 所述 DBS根据所述 RN的资源状态更新消息、 及所述第二 S1接口 的传输网络层负载状态信息, 向 BS发送所述 RN的资源状态更新消息;
S505: 所述 BS接收所述 RN的资源状态更新消息, 用于将其下的至少一 个 UE切换至所述 RN。
本实施例中的 S501与第二实施例中的 S401相同, 在此不再赘述。
在 S502中, 当 BS的资源负载过重, 例如: 发生超载或重载情况, BS 通过 DBS向 RN发送资源资源状态请求消息,以利于将 BS下的 UE切换至 RN下的小区中。 当上述资源状态请求消息携带有 S1接口的传输网络层负 载状态信息的请求指示时, RN要将第一 S1接口传输网络层负载状态信息 携带在资源状态更新消息中, 并将其上报至 DBS。 因为 DBS和 RN之间的 传输资源是 DBS动态分配的, RN自身无法直接获取第一 S1接口传输网络 层负载状态信息, 故需要由 DBS获取第一 S1接口传输网络层负载状态信 息后并将其发送至 RN, 用于 RN接收上述第一 S1接口传输网络层负载状 态信息并将其携带在资源状态更新消息中,对 BS进行上报。在本实施例中, DBS可以通过 RRC信令, 也可以通过 X2接口的控制信令或 S1接口的控 制信令将第一 S1接口传输网络层负载状态信息发送至 RN。
在 S503中, RN的资源状态更新消息中携带的 RN的负载状态信息上报, 取决于 BS资源状态请求消息中的负载状态信息的请求指示。 例如: 如果资 源状态请求消息中携带硬件负载状态信息的请求指示时,则 RN上报的资源 状态更新消息中需要携带 RN的硬件负载状态信息。本领域的技术人员可以 理解, BS资源状态请求消息中的负载状态信息的请求指示还可以是对 RN 下的小区的无线资源负载状态信息、 又或者 RN的 S1接口传输网络层负载 状态信息的请求指示, 此处不再赘述。
在 S504及 S505中, 所述 DBS根据所述 RN的负载状态更新消息中携 带的所述第一 S1接口传输网络层负载状态信息、 及所述第二 S1接口传输 网络层负载状态信息, 向 BS发送所述 RN的负载状态更新消息, 用于所述 BS确定是否将其下的 UE切换至所述 RN下的小区。 所述步骤可以参考第 二实施例中的相关描述, 在此不再赘述。
故, 本实施例可以根据 BS的负载情况, 将 BS下的 UE切换至 RN下 的小区, 实现 BS和 RN下的小区之间的负载均衡, 从而使得网络资源利 用率最大化, 进而提高系统容量以及系统性能。
本发明第四实施例提供的一种通讯方法参照如图 6所示, 包括:
S601: BS发送资源状态请求消息至 RN;
S602: DBS接收 RN发送的负载状态更新消息,所述负载状态更新消息中 不携带第一 S1接口传输网络层负载状态信息;
S603: 所述 DBS根据自身获取的所述第一 S1接口传输网络层负载状态 信息、 及所述第二 S1接口传输网络层负载状态信息, 向 BS发送所述 RN 的负载状态更新消息;
S604: 所述 BS接收所述 RN的负载状态更新消息, 用于将其下的 UE 切换至所述 RN。
本实施例中的 S601与第二实施例中的 S401相同, 在此不再赘述。
在 S602中, 当 BS资源负载过重, 例如: 发生超载或重载情况, BS通 过 DBS向 RN发送资源状态请求消息,以利于将 BS下的 UE切换至 RN下 的小区中。 当上述资源状态请求消息携带有 S1接口传输网络层负载状态信 息的请求指示时, DBS可以取消资源状态请求消息中针对 S1接口的传输网 络层负载状态信息的请求指示, 并将更新后的资源状态请求消息发送至 RN。 例如, BS请求 RN进行 S1接口的传输网络层负载状态信息的上报, DBS在向 RN转发 BS发送的资源状态请求消息时,可以取消该资源状态请 求消息中携带的 SI TNL Load Indicator字段 (SI接口的传输网络层负载状态
信息)的上报请求。在本实施例中, 上述 SI TNL Load Indicator字段为 SI接 口的传输网络层负载状态信息的请求指示。 这样, RN在进行自身的负载状 态信息上报至 DBS时, RN上报的更新后的资源状态更新消息中就不存在 有 SI TNL Load Indicator字段的上报, 换句话说, RN上报的更新后的资源 状态更新消息中就不存在有第一 S1接口传输网络层负载状态信息的上报。 而 DBS 自身可以通过获取第一 SI接口传输网络层负载状态信息, 并综合 考虑第二 S1接口传输网络层负载状态信息, 确定 RN的资源状态更新消息 的上报。
在 S603及 S604中, 所述 DBS在收到 RN上报的 RN的负载资源更新 消息后, 根据自身获取的所述第一 S1接口传输网络层负载状态信息、 所述 第二 S1接口传输网络层负载状态信息, 向 BS发送所述 RN的负载状态更 新消息, 用于所述 BS确定是否将其下的 UE切换至所述 RN。 所述步骤可 以参考第二、 第三实施例中的相关描述, 在此不再赘述。
故, 本实施例可以根据 BS的负载情况, 将 BS下的 UE切换至 RN下 的小区中, 实现 BS下的小区和 RN下的小区之间的负载均衡, 从而使得 网络资源利用率最大化, 进而提高系统容量以及系统性能。
本领域技术人员可以理解实现方法实施例的全部或部分可以通过程序 指令相关的硬件来完成, 前述的程序可以存储于一计算机可读取存储介质 中, 上述述程序在执行时, 执行包括上述方法实施例的流程; 而前述的存 储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
本发明第五实施例提供一种中继节点, 其主要结构可参照图 7所示, 包 括:
接收单元 701 , 用于接收服务于 RN的 DBS发送的指示信息;
处理单元 702, 用于根据所述指示信息进行移动负载均衡处理, 将所述 RN下小区中的至少一个 UE切换到 BS下的小区中。
其中, 所述接收单元 701 , 还用于接收所述 DBS转发的 BS的请求获取 S1接口传输网络层负载状态信息的消息、 及所述 DBS发送的所述 DBS和 所述 RN之间的第一 S 1接口传输网络层负载状态信息。
其中, 所述中继节点还包括发送单元 703, 用于发送携带有所述第一 S1 接口传输网络层负载状态信息的消息至所述 DBS。
其中, 发送单元 703, 还用于当所述 DBS取消所述请求获取 S1接口传 输网络层负载状态信息的消息中对 S1接口的传输网络层负载状态信息的请 求时, 将不携带有所述第一 S1接口传输网络层负载状态信息的消息发送至 所述 DBS。
所述中继节点可以实现上述第一至第四实施例的移动负载均衡处理方 法中所述中继节点执行的动作, 例如, 所述接收单元 701 可以执行第一实 施例中 S101的动作。 故, 本实施例可以根据 DBS的负载情况, 将 RN下 小区中的 UE切换至 BS下的小区中, 实现 DBS下的小区、及 BS下的小 区之间的负载均衡, 从而使得网络资源利用率最大化, 进而提高系统容量 以及系统性能。
本发明第六实施例提供一种宿主基站, 其主要结构可参照图 8所示, 包 括:
检测单元 801 ,用于检测所述宿主基站 DBS和所述宿主基站 DBS下的中继 节点 RN之间的 S1接口的传输网络层资源是否超过第一移动负载均衡触发 门限, 或检测所述宿主基站 DBS的硬件资源是否超过第二移动负载均衡触 发门限, 或检测所述宿主基站 DBS和服务网关 SGW之间的 S1接口的传输网 络层资源是否超过第三移动负载均衡触发门限, 或检测所述宿主基站 DBS 下小区的无线资源负载是否超过第四移动负载均衡触发门限; 及
第一处理单元 802, 用于发送指示信息至 RN, 用于将所述 RN下小区的 至少一个用户设备 UE切换到基站 BS下的小区中。
其中, 所述宿主基站还包括第二处理单元 803, 用于根据所述 DBS和所
述 RN之间的第一 SI接口传输网络层负载状态信息、 及所述 DBS和 SGW 之间的第二 S 1接口传输网络层负载状态信息,向所述 BS发送 S 1接口传输 网络层负载状态信息, 用于将所述 BS下小区中的 UE切换至所述 RN下的 小区中。
其中, 所述第二处理单元 803, 还用于:
当所述第一 S 1接口传输网络层负载状态信息携带的传输网络层负载值 超过所述第二 S1 接口传输网络层负载状态信息携带的传输网络层负载值 时, 向所述 BS发送所述第一 S1接口传输网络层负载状态信息; 或者
当所述第一 S 1接口传输网络层负载状态信息携带的传输网络层负载值 低于所述第二 S1 接口传输网络层负载状态信息携带的传输网络层负载值 时, 向所述 BS发送所述第二 S1接口传输网络层负载状态信息; 或者
当所述第一 S 1接口传输网络层负载状态信息携带的传输网络层负载值 等于所述第二 S1 接口传输网络层负载状态信息携带的传输网络层负载值 时, 向所述 BS发送所述第一 S1接口传输网络层负载状态信息或所述第二 S 1接口传输网络层负载状态信息。
其中, 所述宿主基站还包括发送单元 804, 用于发送所述第一 S1接口传 输网络层负载状态信息至所述 RN; 及接收单元 805, 用于接收所述 RN发送 的携带有所述第一 S1接口传输网络层负载状态信息的消息。
其中, 所述接收单元 805,还用于接收所述 BS发送的请求获取 S1接口传 输网络层负载状态信息的消息, 所述消息为资源状态请求消息。
其中,所述接收单元 805 ,还用于接收所述 RN发送的不携带有所述第一 S 1接口传输网络层负载状态信息的消息。
所述宿主基站可以实现上述第一至第四实施例的移动负载均衡处理方 法中所述宿主基站执行的动作, 例如, 所述第一处理单元 802可以执行第 四实施例中 S602的动作。 故, 本实施例可以根据 BS的负载情况, 将 BS 下小区中的 UE切换至 RN下的小区中, 实现 RN下的小区、 及 BS下的
小区之间的负载均衡, 从而使得网络资源利用率最大化, 进而提高系统容 量以及系统性能。
本发明第七实施例提供一种通讯系统, 其主要结构可参照图 9所示, 包 括:
一中继节点 RN901 , 及一宿主基站 DBS902;
所述宿主基站 DBS902, 用于发送指示信息至所述中继节点 RN901;
所述中继节点 RN901 , 用于根据所述指示信息进行移动负载均衡处理, 将其下小区中的至少一个 UE切换到基站 BS下的小区中。
其中, 所述 DBS902, 还用于检测所述 DBS和所述 RN之间的 S1接口 的传输网络层资源是否超过第一移动负载均衡触发门限, 或检测所述 DBS 的硬件资源是否超过第二移动负载均衡触发门限, 或检测所述 DBS和服务 网关 SGW之间的 S1接口的传输网络层资源是否超过第三移动负载均衡触 发门限, 或检测所述 DBS下小区的无线资源负载是否超过第四移动负载均 衡触发门限。
其中, 所述 DBS902,还用以根据所述 DBS902和所述 RN901之间的第 一 S1接口传输网络层负载状态信息、 及所述 DBS902和服务网关 SGW之 间的第二 S 1接口传输网络层负载状态信息向所述 BS发送 S 1接口传输网络 层负载状态信息,用于将所述 BS下小区中的至少一个 UE切换至所述 RN91 下的小区中。
其中, 所述 RN901 , 还用于接收所述 DBS902转发的所述请求获取所述 S1接口传输网络层负载状态信息的消息、 及所述 DBS902发送的所述第一 S 1接口传输网络层负载状态信息。
其中, 所述 RN901 , 还用于发送 RN901 的资源状态更新消息至所述 DBS92。
所述通讯系统包括第一至第六实施例中的 DBS和 RN,并可以实现上述 实施例中的 DBS和 RN执行的动作。 针对 BS的负载情况, 将 BS下小区
中的 UE切换至 RN下的小区中; 或者针对 DBS的负载情况, 将 RN下 小区中的 UE切换至 BS下的小区, 实现 RN下的小区、 DBS下的小区、 及 BS 下的小区之间的负载均衡, 从而使得网络资源利用率最大化, 进而 提高系统容量以及系统性能。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描 述进行分布于实施例的装置中, 也可以进行相应变化位于不同于本实施例 的一个或多个装置中。 并且, 实施例的模块可以合并为一个模块, 也可以 进一步拆分成多个子模块。
本领域技术人员可以理解, 本发明实施例中装置模块的划分为功能划 分, 实际具体结构可以为上述功能模块的拆分或合并。
以上实施例的序号仅仅为了描述, 不代表实施例的优劣。
权利要求的内容记载的方案也是本发明实施例的保护范围。
以上实施例仅用以说明本发明的技术方案, 而非对其限制; 尽管参照 前述实施例对本发明进行了详细的说明, 本领域的普通技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分 技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的本 质脱离本发明各实施例技术方案的范围。
Claims
权利要求 一种移动负载均衡处理方法, 其特征在于, 包括:
宿主基站 DBS发送指示信息至所述宿主基站 DBS下的中继节点 RN;
所述宿主基站 DBS经由所述指示信息指示所述中继节点 RN进行 移动负载均衡处理,用以将所述中继节点 RN下的小区中的至少一 个用户设备 UE切换到相邻小区。
如权利要求 1所述的方法, 其特征在于, 所述宿主基站 DBS发送 指示信息至所述宿主基站 DBS下的中继节点 RN, 包括: 当所述 DBS检测到所述 DBS和所述 RN之间的 S1接口的传输网络 层资源超过第一移动负载均衡触发门限时; 或者
当所述 DBS检测到自身的硬件资源超过第二移动负载均衡触发 门限时; 或者,
当所述 DBS检测到所述 DBS和服务网关 SGW之间的 S1接口的传 输网络层资源超过第三移动负载均衡触发门限时; 或者
当所述 DBS检测到所述 DBS下小区的无线资源负载超过第四移动 负载均衡触发门限时,
所述 DBS向所述 RN发送所述指示信息。
如权利要求 1或 2所述的方法, 其特征在于, 还包括:
所述 DBS接收服务于所述相邻小区的基站或中继站请求获取 S1 接口传输网络层负载状态信息的消息;
所述 DBS根据所述 DBS和所述 RN之间的第一 S1接口传输网络层 负载状态信息、及所述 DBS和 SGW之间的第二 S 1接口传输网络层 负载状态信息向服务于所述相邻小区的所述基站或所述中继站 发送所述 S1接口传输网络层负载状态信息, 用于将所述相邻小区
中的至少一个 UE切换至所述 RN下的小区中。
如权利要求 3所述的方法, 其特征在于, 所述所述 DBS根据所 述 DBS和所述 RN之间的第一 S 1接口传输网络层负载状态信息、 及所述 DBS和 SGW之间的第二 S1接口传输网络层负载状态信 息向服务于所述相邻小区的所述基站或所述中继站发送所述 S1 接口传输网络层负载状态信息, 包括:
当所述第一 S1接口传输网络层负载状态信息携带的传输网络层 负载值超过所述第二 S1接口传输网络层负载状态信息携带的传 输网络层负载值时, 所述 DBS 向服务于所述相邻小区的所述基 站或所述中继站发送所述第一 S 1接口传输网络层负载状态信息; 或者
当所述第一 S1接口传输网络层负载状态信息携带的传输网络层 负载值低于所述第二 S1接口传输网络层负载状态信息携带的传 输网络层负载值时, 所述 DBS 向服务于所述相邻小区的所述基 站或所述中继站发送所述第二 S 1接口传输网络层负载状态信息; 或者
当所述第一 S1接口传输网络层负载状态信息携带的传输网络层 负载值等于所述第二 S1接口传输网络层负载状态信息携带的传 输网络层负载值时, 所述 DBS 向服务于所述相邻小区的所述基 站或所述中继站发送所述第一 S1接口传输网络层负载状态信息 或所述第二 S1接口传输网络层负载状态信息。
如权利要求 3或 4所述的方法, 其特征在于:
所述请求获取 S1接口传输网络层负载状态信息的消息为资源状 态请求消息。
如权利要求 5所述的方法, 其特征在于, 还包括:
所述 DBS向所述 RN发送所述资源状态请求消息,所述资源状态请
求消息中携带有所述 SI接口的传输网络层负载状态信息的请求; 所述 DBS发送所述第一 S1接口传输网络层负载状态信息至所述 RN; 及
所述 DBS接收所述 RN发送的携带有所述第一 S1接口传输网络层 负载状态信息的消息。
、 如权利要求 5所述的方法, 其特征在于, 还包括:
所述 DBS向所述 RN发送不携带有请求获取所述 S1接口的传输网 络层负载状态信息的消息; 及
所述 DBS接收所述 RN发送的不携带有所述第一 S1接口传输网 络层负载状态信息的消息。
8、 如权利要求 6所述的方法, 其特征在于:
所述 RN发送的携带有所述第一 S1接口传输网络层负载状态信 息的消息为 RN的资源状态更新消息。
9、 一种移动负载均衡处理方法, 其特征在于, 包括:
中继节点 RN接收服务于所述中继节点 RN的宿主基站 DBS发送的 指示信息; 及
所述中继节点 RN根据所述指示信息触发移动负载均衡处理,用以 将所述中继节点 RN下小区中的至少一个用户设备 UE切换到相邻 小区中。
10、 如权利要求 9所述的方法, 其特征在于, 还包括:
所述 RN接收所述 DBS转发的服务于所述相邻小区的基站或中继 站请求获取 S1接口传输网络层负载状态信息的消息;
所述 RN接收所述 DBS发送的所述 RN与所述 DBS之间的第一 S 1接 口传输网络层负载状态信息; 及
所述 RN将携带有所述第一 S1接口传输网络层负载状态信息的消 息发送至所述 DBS。
、 如权利要求 9所述的方法, 其特征在于, 还包括:
所述 RN接收所述 DBS发送的不携带有请求获取 S1接口传输网络 层负载状态信息的消息;
所述 RN将不携带有所述第一 S1接口传输网络层负载状态信息的 消息发送至所述 DBS。
、 如权利要求 10所述的方法, 其特征在于:
所述请求获取 S1接口传输网络层负载状态信息的消息为资源状 态请求消息;
所述携带有所述第一 S1接口传输网络层负载状态信息的消息为 资源状态更新消息。
、 一种宿主基站 DBS, 其特征在于, 包括:
检测单元, 用于检测所述宿主基站 DBS和所述宿主基站 DBS下的 中继节点 RN之间的 S1接口的传输网络层资源是否超过第一移动 负载均衡触发门限, 或检测所述宿主基站 DBS的硬件资源是否超 过第二移动负载均衡触发门限, 或检测所述宿主基站 DBS和服务 网关 S GW之间的 S 1接口的传输网络层资源是否超过第三移动负 载均衡触发门限, 或检测所述宿主基站 DBS下小区的无线资源负 载是否超过第四移动负载均衡触发门限; 及
第一处理单元,用于发送指示信息至所述中继节点 RN,用于将所 述中继节点 RN下小区的至少一个用户设备 UE切换到相邻小区 中。
、 如权利要求 13所述的宿主基站, 其特征在于, 还包括:
第二处理单元, 用于根据所述 DBS和所述 RN之间的第一 S1接 口传输网络层负载状态信息、及所述 DBS和所述 SGW之间的第 二 S1接口传输网络层负载状态信息, 向所述服务于所述相邻小 区的基站或中继站发送 S1接口传输网络层负载状态信息, 用于
将所述相邻小区中的至少一个 UE切换至所述 RN下的小区中。 、 如权利要求 14所述的宿主基站, 其特征在于:
所述第二处理单元, 还用于:
当所述第一 S1接口传输网络层负载状态信息携带的传输网络层 负载值超过所述第二 S1接口传输网络层负载状态信息携带的传 输网络层负载值时, 向服务于所述相邻小区的基站或中继站发送 所述第一 S1接口传输网络层负载状态信息; 或者
当所述第一 S1接口传输网络层负载状态信息携带的传输网络层 负载值低于所述第二 S1传输网络层接口负载状态信息携带的传 输网络层负载值时, 向服务于所述相邻小区的基站或中继站发送 所述第二 S1接口传输网络层负载状态信息; 或者
当所述第一 S1接口传输网络层负载状态信息携带的传输网络层 负载值等于所述第二 S1接口传输网络层负载状态信息携带的传 输网络层负载值时, 向服务于所述相邻小区的基站或中继站发送 所述第一 S1接口传输网络层负载状态信息或所述第二 S1接口传 输网络层负载状态信息。
、 如权利要求 14或 15所述的宿主基站, 其特征在于, 还包括: 发送单元, 用于发送所述第一 S1接口传输网络层负载状态信息至 所述 RN; 及
接收单元, 用于接收所述 RN发送的携带有所述第一 S1接口传输 网络层负载状态信息的消息。
、 如权利要求 16所述的宿主基站, 其特征在于:
所述接收单元, 还用于接收所述服务于所述相邻小区的基站或中 继站发送的请求获取所述 S1接口传输网络层负载状态信息的消 息, 所述消息为资源状态请求消息。
、 如权利要求 16或 17所述的宿主基站, 其特征在于, 还包括:
所述接收单元,还用于接收所述 RN发送的不携带有所述第一 S1 接口传输网络层负载状态信息的消息。
19、 一种中继节点 RN, 其特征在于, 包括:
接收单元,用于接收服务于所述中继节点 RN的宿主基站 DBS发送 的指示信息;
处理单元, 用于根据所述指示信息进行移动负载均衡处理, 将所 述中继节点 RN下小区中的至少一个用户设备 UE切换到相邻小 区中。
20、 如权利要求 19所述的中继节点 RN, 其特征在于:
所述接收单元, 还用于接收所述 DBS 转发的服务于所述相邻小 区的基站或中继站请求获取 S1接口传输网络层负载状态信息的 消息、 及所述 DBS发送的所述 DBS和所述 RN之间的第一 S1 接口传输网络层负载状态信息。
21、 如权利要求 20所述的中继节点 RN, 其特征在于, 还包括:
发送单元, 用于发送携带有所述第一 S1接口传输网络层负载状 态信息的消息至所述 DBS。
22、 如权利要求 21所述的中继节点 RN, 其特征在于:
发送单元, 还用于发送不携带有所述第一 S 1接口传输网络层负载 状态信息的消息至所述 DBS。
23、 一种通讯系统, 其特征在于, 包括:
一中继节点 RN , 及一服务于所述中继节点 RN的宿主基站 DBS; 所述宿主基站 DBS, 用于发送指示信息至所述中继节点 RN;
所述中继节点 RN, 用于根据所述指示信息进行移动负载均衡处 理, 将所述中继节点 RN下小区中的至少一个用户设备 UE切换 到相邻小区中。
24、 如权利要求 23所述的通讯系统, 其特征在于:
所述 DBS,还用于检测所述 DBS和所述 RN之间的 S1接口的传 输网络层资源是否超过第一移动负载均衡触发门限, 或检测所述 DBS的硬件资源是否超过第二移动负载均衡触发门限,或检测所 述 DBS和服务网关 SGW之间的 S1接口的传输网络层资源是否 超过第三移动负载均衡触发门限, 或检测所述 DBS 下小区的无 线资源负载是否超过第四移动负载均衡触发门限。
、 如权利要求 23或 24所述的通讯系统, 其特征在于:
所述 DBS ,还用以根据所述 DBS和所述 RN之间的第一 S 1接口 传输网络层负载状态信息、 及所述 DBS和 SGW之间的第二 S1 接口传输网络层负载状态信息向所述服务于所述相邻小区的基 站或中继站发送 S1接口传输网络层负载状态信息, 用于将所述 相邻小区中的至少一个 UE切换至所述 RN下的小区中。
、 如权利要求 25所述的通讯系统, 其特征在于:
所述 RN, 还用于接收所述 DBS转发的所述请求获取所述 S1接 口传输网络层负载状态信息的消息、 及所述 DBS发送的所述第 一 S 1接口传输网络层负载状态信息。
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| EP12817544.5A EP2725849B1 (en) | 2011-07-27 | 2012-07-27 | A mobility load balance processing method and a donor base station |
| US14/162,199 US9173131B2 (en) | 2011-07-27 | 2014-01-23 | Mobility load balance processing method, relay node, donor base station, and communication system |
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| CN201110212007.6A CN102905312B (zh) | 2011-07-27 | 2011-07-27 | 移动负载均衡处理方法、中继节点、宿主基站、和通讯系统 |
| CN201110212007.6 | 2011-07-27 |
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| PCT/CN2012/079229 Ceased WO2013013638A1 (zh) | 2011-07-27 | 2012-07-27 | 移动负载均衡处理方法、中继节点、宿主基站、和通讯系统 |
Country Status (4)
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|---|---|
| US (1) | US9173131B2 (zh) |
| EP (1) | EP2725849B1 (zh) |
| CN (1) | CN102905312B (zh) |
| WO (1) | WO2013013638A1 (zh) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2725849A1 (en) | 2014-04-30 |
| EP2725849A4 (en) | 2014-07-23 |
| US9173131B2 (en) | 2015-10-27 |
| US20140135015A1 (en) | 2014-05-15 |
| CN102905312A (zh) | 2013-01-30 |
| CN102905312B (zh) | 2016-03-02 |
| EP2725849B1 (en) | 2016-10-19 |
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