CN105191396A

CN105191396A - Load balancing method and apparatus

Info

Publication number: CN105191396A
Application number: CN201380002964.3A
Authority: CN
Inventors: 吴彤; 肖登坤; 韩静
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2015-12-23
Also published as: WO2014205781A1

Abstract

Embodiments of the present invention provide a load balancing method and apparatus. In the load balancing method, a wireless network comprises a macro base station, a small cell cluster and a load balancing apparatus, and the small cell cluster comprises multiple small cell nodes. The method comprises: the load balancing apparatus receiving load state information sent by a small cell node in a small cell cluster; the load balancing apparatus determining a to-be-adjusted small cell node according to the load state information; and the load balancing apparatus sending load balancing indication signaling to the to-be-adjusted small cell node, so that the to-be-adjusted small cell node performs load balancing adjustment according to the load balancing signaling. The load balancing method and apparatus provided in the embodiments of the present invention are used to save a system resource and improve system performance.

Description

Load balancing method and apparatus

Load-balancing method and device

Technical field

The present embodiments relate to communication technical field, more particularly to a kind of load-balancing method and device.Background technology

With the development of mobile communication technology, GSM is needed to provide the user higher message transmission rate and wider array of service coverage, and low power nodes are disposed in a network（Low Power Node, LNP) dispose in a network, that is, constitute heterogeneous network（Heterogeneous Network, Hetnet), can be with the covering of extended network, it is ensured that the quality of service of user（Quality of Service, QoS ) .Wherein, low power nodes can be micro-base station（Pico Node), via node（Relay Node), remote radio node（Remote Radio Head, RRH) etc., the overlay area of these nodes occurs in the form of cell.Because the coverage of cell is smaller, typically all multiple slight district's groups cover certain region into cluster cell.

Load balancing（Load Balance) technology is used to share load and handled on multiple network elements, when the overload of node in network, the allotment that can be loaded by load-balancing technique between adjacent base station, so as to reasonably utilize Internet resources.In the prior art, the load balance process in above-mentioned isomery planar network architecture is completed by macro base station, and the load balancing of all cells in the range of the macrocell of macro base station covering is performed by macro base station.

But, because macro base station needs to undertake the processing task of many in a network, such as carrier aggregation, Inter-Cell Interference Coordination, these tasks all have very high requirement to the disposal ability of macro base station, with the increase of small number of cells, load balancing can aggravate the burden of macro base station, so as to reduce systematic function.The content of the invention embodiment of the present invention provides a kind of load-balancing method and device, for saving system resource, lifting system performance.

First aspect provides a kind of load-balancing method, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and methods described includes：

The load balancing apparatus receives the load condition letter that the small cell Node in the small cell cluster is sent The load balancing apparatus determines small cell Node to be adjusted according to the load state information；The load balancing apparatus is to the small cell Node transmission load balancing indication signaling to be adjusted, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

In first aspect in the first possible implementation, the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or,

The small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that the small cell Node of the underloading improves cell own reference signal power.

The first possible implementation with reference to first aspect, in second of possible implementation, the load balancing apparatus is received after the load state information that the small cell Node in the small cell cluster is sent, in addition to：

The load balancing apparatus determines the load condition of the small cell cluster according to the load state information；

The load state information of the small cell cluster is sent to the macro base station by the load balancing apparatus, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The load balancing apparatus receives the load balancing indication signaling that the macro base station is sent.

With reference to second of possible implementation of first aspect, in the third possible implementation, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

With reference to second of possible implementation of first aspect, in the 4th kind of possible implementation, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the small cell Node of overload will be in institute according to the Physical Cell Identifier of the adjacent macro base station of the macro base station The user for stating overload cell coverage edge is switched in the adjacent macro base station of the macro base station.

With reference to second of possible implementation of first aspect, in the 5th kind of possible implementation, the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

With reference to the first any possible implementation into the 4th kind of possible implementation of first aspect, in the 6th kind of possible implementation, the load balancing apparatus to after the small cell Node transmission load balancing indication signaling to be adjusted, in addition to：

The load balancing apparatus receives the overload messages that the small cell Node of overload is sent；

The load balancing apparatus sends overload indication signaling to the small cell Node of overload, and the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

With reference to any possible implementation in the 6th kind of possible implementation of first aspect to first aspect, in the 7th kind of possible implementation, the load balancing apparatus is received before the load state information that the small cell Node in the small cell cluster is sent, in addition to：

Small cell Node of the load balancing apparatus into the small cell cluster sends load condition solicited message, and the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to any possible implementation in the 7th kind of possible implementation of first aspect to first aspect, in the 8th kind of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Second aspect provides a kind of load-balancing method, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and methods described includes：

The load balancing apparatus receives the load state information that the small cell Node in the small cell cluster is sent；

The load state information of the small cell cluster is sent to the macro base station by the load balancing apparatus, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The load balancing apparatus receives the overload indication signaling that the macro base station is sent； The load balancing apparatus determines the small cell Node of underloading according to the load state information；The load balancing apparatus sends overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

In second aspect in the first possible implementation, the load balancing apparatus is received before the load state information that the small cell Node in the small cell cluster is sent, in addition to：

With reference to second aspect or second aspect the first possible implementation, in second of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

The third aspect provides a kind of load-balancing method, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and methods described includes：

The small cell Node sends load state information to the load balancing apparatus；

The small cell Node receives the load balancing indication signaling that the load balancing apparatus is sent, and the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information；

The small cell Node carries out load balancing adjustment according to the load balancing signaling.

In the third aspect in the first possible implementation, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the user in the cell coverage edge is switched to the small cell Node of the underloading by the small cell Node according to the Physical Cell Identifier of the small cell Node of the underloading；Or, the load balancing indication signaling is used to indicate that the small cell Node reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by the small cell Node according to the Physical Cell Identifier of the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and the user in the cell coverage edge is switched to the macro base station adjacent with the macro base station by the small cell Node according to the Physical Cell Identifier of the macro base station adjacent with the macro base station.

In second of possible implementation of the third aspect, the small cell Node is the small cell Node of underloading, and the load balancing indication signaling is used to indicate that the small cell Node improves cell own reference signal Power.

With reference to the third aspect the first or second of possible implementation, in the third possible implementation, the small cell Node is carried out according to the load balancing signaling after load balancing adjustment, in addition to：

The small cell Node sends overload messages to the load balancing apparatus；

The small cell Node receives the overload indication signaling that the load balancing apparatus is sent；

The speed of the user less than pre-set priority of the small cell Node reduction access deletes the user for being less than pre-set priority.

With reference to any possible implementation in the third aspect to the third aspect the third possible implementation, in the 4th kind of possible implementation, the small cell Node is sent to the load balancing apparatus before load state information, in addition to：

The small cell Node receives the load condition solicited message that the load balancing apparatus is sent, and the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to any possible implementation in the 4th kind of possible implementation of the third aspect to the third aspect, in the 5th kind of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.Fourth aspect provides a kind of load-balancing method, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and methods described includes：

The small cell Node receives the handover request that the macro base station is sent, and the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus；

The small cell Node sends handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

In fourth aspect in the first possible implementation, the small cell Node is sent to the load balancing apparatus before load state information, in addition to：

With reference to fourth aspect or fourth aspect the first possible implementation, possible realized at second In mode, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

5th aspect provides a kind of load-balancing method, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and methods described includes：

The macro base station receives the load state information for the small cell cluster that the load balancing apparatus is sent, and the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

The macro base station generates load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The macro base station sends the load balancing indication signaling to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

In the first possible implementation in terms of the 5th, the load condition of the macro base station is underloading；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

In the 5th second of possible implementation of aspect, the load condition of the macro base station is overload；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or,

With reference to the 5th aspect to the 5th aspect second of possible implementation in any possible implementation, in the third possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.6th aspect provides a kind of load-balancing method, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and methods described includes： The macro base station receives the load state information for the small cell cluster that the load balancing apparatus is sent, and the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

The macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The macro base station sends the overload indication signaling to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；

The macro base station receives the overload response signaling that the load balancing apparatus is sent, and the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

User in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

In the first possible implementation in terms of the 6th, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

7th aspect provides a kind of load balancing apparatus, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiving module, the load state information for receiving the transmission of the small cell Node in the small cell cluster;Processing module, for determining small cell Node to be adjusted according to the load state information；Sending module, for the small cell Node transmission load balancing indication signaling to be adjusted, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

In the first possible implementation in terms of the 7th, the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or,

The small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that it is exclusive that the small cell Node of the underloading improves cell Reference signal power.

With reference to the 7th aspect the first possible implementation, in second of possible implementation, the processing module is additionally operable to determine the load condition of the small cell cluster according to the load state information；The sending module, is additionally operable to the load state information of the small cell cluster being sent to the macro base station, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The receiving module, is additionally operable to receive the load balancing indication signaling that the macro base station is sent.With reference to the 7th second of possible implementation of aspect, in the third possible implementation, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

With reference to the 7th second of possible implementation of aspect, in the 4th kind of possible implementation, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

With reference to the 7th second of possible implementation of aspect, in the 5th kind of possible implementation, the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

With reference to the 7th aspect the first any possible implementation into the 4th kind of possible implementation, in the 6th kind of possible implementation, the receiving module is additionally operable to receive the overload messages that the small cell Node of overload is sent；

The sending module, it is additionally operable to send overload indication signaling to the small cell Node of overload, the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

With reference to the 7th aspect to the 7th aspect the 6th kind of possible implementation in any possible implementation, in the 7th kind of possible implementation, the sending module, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to the 7th aspect to the 7th aspect the 7th kind of possible implementation in any possible implementation, in the 8th kind of possible implementation, the load state information includes：It is spectral occupancy, small At least one in area's number of users, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Eighth aspect provides a kind of load balancing apparatus, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiving module, the load state information for receiving the transmission of the small cell Node in the small cell cluster;Processing module, the load condition for determining the small cell cluster according to the load state information；Sending module, for the load state information of the small cell cluster to be sent into the macro base station, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The receiving module, is additionally operable to receive the overload indication signaling that the macro base station is sent；The processing module, is additionally operable to determine the small cell Node of underloading according to the load state information；The sending module, it is additionally operable to send overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

In eighth aspect in the first possible implementation, the sending module, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to eighth aspect or eighth aspect the first possible implementation, in second of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

9th aspect provides a kind of small cell Node, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the small cell Node includes：Sending module, for sending load state information to the load balancing apparatus；

Receiving module, for receiving the load balancing indication signaling that the load balancing apparatus is sent, the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information；

Adjustment of load module, for carrying out load balancing adjustment according to the load balancing signaling.

In the first possible implementation in terms of the 9th, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the adjustment of load module is small specifically for the physics according to the small cell Node of the underloading User in the cell coverage edge is switched to the small cell Node of the underloading by area's mark；Or, the load balancing indication signaling is used to indicate that the adjustment of load module reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by the adjustment of load module specifically for the Physical Cell Identifier according to the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and the adjustment of load module by the user in the cell coverage edge according to the Physical Cell Identifier of the macro base station adjacent with the macro base station specifically for being switched to the macro base station adjacent with the macro base station.

In the 9th second of possible implementation of aspect, the small cell Node is the small cell Node of underloading, and the load balancing indication signaling is used to indicate that the adjustment of load module improves cell own reference signal power.

With reference to the 9th aspect the first or second of possible implementation, in the third possible implementation, the sending module is additionally operable to send overload messages to the load balancing apparatus；

The receiving module, is additionally operable to receive the overload indication signaling that the load balancing apparatus is sent；The adjustment of load module, is additionally operable to the speed of the user less than pre-set priority of reduction access or deletes the user for being less than pre-set priority.

With reference to the 9th aspect to the 9th aspect the third possible implementation in any possible implementation, in the 4th kind of possible implementation, the receiving module, it is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to the 9th aspect to the 9th aspect the 4th kind of possible implementation in any possible implementation, in the 5th kind of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Tenth aspect provides a kind of small cell Node, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the small cell Node includes：Sending module, for sending load state information to the load balancing apparatus；

Receiving module, for receiving the handover request that the macro base station is sent, the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus； The sending module, is additionally operable to send handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

In the first possible implementation in terms of the tenth, the receiving module, it is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to the tenth aspect or the tenth aspect the first possible implementation, in second of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Tenth one side provides a kind of macro base station, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Receiving module, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

Processing module, the load condition for the load state information according to the small cell cluster and the macro base station generates load balancing indication signaling；

Sending module, for sending the load balancing indication signaling to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

In the tenth on the one hand the first possible implementation, the load condition of the macro base station is underloading;The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or,

In the tenth on the one hand second of possible implementation, the load condition of the macro base station is overload;The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted. With reference to any possible implementation in the tenth one side to the tenth on the one hand second of possible implementation, in the third possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

12nd aspect provides a kind of macro base station, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Processing module, the load condition generation overload indication signaling for the load state information according to the small cell cluster and the macro base station；

Sending module, for sending the overload indication signaling to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；

The receiving module, is additionally operable to receive the overload response signaling that the load balancing apparatus is sent, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

Handover module, the small cell Node of the underloading is switched to for the Physical Cell Identifier according to the small cell Node of the underloading by the user in the range of the underloading cell coverage.

In the first possible implementation in terms of the 12nd, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

13rd aspect provides a kind of load balancing apparatus, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiver, the load state information for receiving the transmission of the small cell Node in the small cell cluster；Processor, the load state information for being received according to the receiver determines small cell Node to be adjusted；

Transmitter, for the small cell Node transmission load balancing indication signaling to be adjusted determined to the processor, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

In the first possible implementation in terms of the 13rd, the small cell Node to be adjusted includes Overload small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or,

With reference to the 13rd aspect the first possible implementation, in second of possible implementation, the processor is additionally operable to determine the load condition of the small cell cluster according to the load state information that the receiver is received；

The transmitter, the load state information of small cell cluster for being additionally operable to determine the processor is sent to the macro base station, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The receiver, is additionally operable to receive the load balancing indication signaling that the macro base station is sent.With reference to the 13rd second of possible implementation of aspect, in the third possible implementation, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

With reference to the 13rd second of possible implementation of aspect, in the 4th kind of possible implementation, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

With reference to the 13rd second of possible implementation of aspect, in the 5th kind of possible implementation, the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

With reference to the 13rd aspect the first any possible implementation into the 4th kind of possible implementation, in the 6th kind of possible implementation, the receiver is additionally operable to receive the overload messages that the small cell Node of overload is sent；

The transmitter, is additionally operable to send the overload that the receiver is received to the small cell Node of overload Indication signaling, the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

With reference to the 13rd aspect to the 13rd aspect the 6th kind of possible implementation in any possible implementation, in the 7th kind of possible implementation, the transmitter, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to the 13rd aspect to the 13rd aspect the 7th kind of possible implementation in any possible implementation, in the 8th kind of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Fourteenth aspect provides a kind of load balancing apparatus, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiver, the load state information for receiving the transmission of the small cell Node in the small cell cluster；Processor, the load state information for being received according to the receiver determines the load condition of the small cell cluster；

Transmitter, the load state information of the small cell cluster for the processor to be determined is sent to the macro base station, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The receiver, is additionally operable to receive the overload indication signaling that the macro base station is sent；The processor, is additionally operable to determine the small cell Node of underloading according to the load state information that the receiver is received；

The transmitter, it is additionally operable to send overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

In fourteenth aspect in the first possible implementation, the transmitter, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to fourteenth aspect or fourteenth aspect the first possible implementation, in second of possible implementation, the load state information includes：Spectral occupancy, community user number, the net of business At least one in network capacity, idling-resource rate, the reserved corresponding capacity of resource.

15th aspect provides a kind of small cell Node, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the small cell Node includes:Transmitter, for sending load state information to the load balancing apparatus；

Receiver, for receiving the load balancing indication signaling that the load balancing apparatus is sent, the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information；

Processor, the load balancing signaling for being received according to the receiver carries out load balancing adjustment.In the first possible implementation in terms of the 15th, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the user in the cell coverage edge is switched to the small cell Node of the underloading by the processor specifically for the Physical Cell Identifier according to the small cell Node of the underloading；Or, the load balancing indication signaling is used to indicate that the processor reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by the processor specifically for the Physical Cell Identifier according to the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and the processor by the user in the cell coverage edge according to the Physical Cell Identifier of the macro base station adjacent with the macro base station specifically for being switched to the macro base station adjacent with the macro base station.

In the 15th second of possible implementation of aspect, the small cell Node is the small cell Node of underloading, and the load balancing indication signaling is used to indicate that the processor improves cell own reference signal power.

With reference to the 15th aspect the first or second of possible implementation, in the third possible implementation, the transmitter is additionally operable to send overload messages to the load balancing apparatus；

The receiver, is additionally operable to receive the overload indication signaling that the load balancing apparatus is sent；The processor, is additionally operable to the speed of the user less than pre-set priority of reduction access or deletes the user for being less than pre-set priority.

With reference to the 15th aspect to the 15th aspect the third possible implementation in any possible implementation, in the 4th kind of possible implementation, the receiver, it is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information. With reference to the 15th aspect to the 15th aspect the 4th kind of possible implementation in any possible implementation, in the 5th kind of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

16th aspect provides a kind of small cell Node, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the small cell Node includes:Transmitter, for sending load state information to the load balancing apparatus；

Receiver, for receiving the handover request that the macro base station is sent, the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus；

The transmitter, is additionally operable to send handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

In the first possible implementation in terms of the 16th, the receiver, it is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

With reference to the 16th aspect or the 16th aspect the first possible implementation, in second of possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

17th aspect provides a kind of macro base station, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Receiver, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

Processor, the load state information of small cell cluster and the load condition of the macro base station for being received according to the receiver generate load balancing indication signaling；

Transmitter, load balancing indication signaling for sending from the processor generation to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

In the first possible implementation in terms of the 17th, the load condition of the macro base station is underloading;The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load Balancer indicates the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or,

In the 17th second of possible implementation of aspect, the load condition of the macro base station is overload;The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or,

With reference to the 17th aspect to the 17th aspect second of possible implementation in any possible implementation, in the third possible implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

18th aspect provides a kind of macro base station, and wireless network includes macro base station, small cell cluster and load balancing apparatus, and the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Processor, indication signaling is overloaded for the load state information of small cell cluster received according to the receiver and the load condition generation of the macro base station；

Transmitter, the overload indication signaling for sending the processor generation to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；

The receiver, is additionally operable to receive the overload response signaling that the load balancing apparatus is sent, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

The processor, is additionally operable to that the user in the range of the underloading cell coverage is switched into the small cell Node of the underloading according to the Physical Cell Identifier of the small cell Node of the underloading.

In the first possible implementation in terms of the 18th, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource. Load-balancing method and device provided in an embodiment of the present invention, by increasing load balancing apparatus in a network, all small cell Nodes in small cell cluster are made all to report load state information to load balancing apparatus, the small cell Node that load balancing apparatus determines to need to be adjusted according to the load state information of all small cell Nodes in the small cell cluster received, so that sending signaling indicates that small cell Node to be adjusted carries out load balancing adjustment.Small cell Node in small cell cluster between macro base station without interacting, and the load balancing of small cell cluster can just be realized by only needing to interact with load balancing apparatus, so as to save the process resource and bandwidth resources of macro base station, allow macro base station to use the resource of saving to carry out other business processings, improve systematic function.Brief description of the drawings is in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.

Figure 1A to Fig. 1 C is the schematic diagram of cell covering scene；

Fig. 2 is the flow chart of load-balancing method embodiment one provided in an embodiment of the present invention；

Fig. 3 is the flow chart of load-balancing method embodiment two provided in an embodiment of the present invention；

Fig. 4 is the flow chart of load-balancing method embodiment three provided in an embodiment of the present invention；

Fig. 5 is the flow chart of load-balancing method example IV provided in an embodiment of the present invention；

Fig. 6 is the flow chart of load-balancing method embodiment five provided in an embodiment of the present invention；

Fig. 7 is the flow chart of load-balancing method embodiment six provided in an embodiment of the present invention；

Fig. 8 is the flow chart of load-balancing method embodiment seven provided in an embodiment of the present invention；

Fig. 9 is the flow chart of load-balancing method embodiment eight provided in an embodiment of the present invention；

Figure 10 is the flow chart of load-balancing method embodiment nine provided in an embodiment of the present invention；Figure 11 is the flow chart of load-balancing method embodiment ten provided in an embodiment of the present invention；Figure 12 is the flow chart of load-balancing method embodiment 11 provided in an embodiment of the present invention；Figure 13 is the signaling process figure of load-balancing method embodiment 12 provided in an embodiment of the present invention；Figure 14 is the signaling process figure of load-balancing method embodiment 13 provided in an embodiment of the present invention；Figure 15 is the signaling process figure of load-balancing method embodiment 14 provided in an embodiment of the present invention；Figure 16 is the signaling process figure of load-balancing method embodiment 15 provided in an embodiment of the present invention； Figure 17 is the signaling process figure of load-balancing method embodiment 16 provided in an embodiment of the present invention；Figure 18 is the signaling process figure of load-balancing method embodiment 17 provided in an embodiment of the present invention；Figure 19 is the structural representation of load balancing apparatus embodiment one provided in an embodiment of the present invention；Figure 20 is the structural representation of cell node embodiment one provided in an embodiment of the present invention；Figure 21 is the structural representation of cell node embodiment two provided in an embodiment of the present invention；Figure 22 is the structural representation of macro base station embodiment one provided in an embodiment of the present invention；

Figure 23 is the structural representation of macro base station embodiment two provided in an embodiment of the present invention；

Figure 24 is the hardware architecture diagram of load balancing apparatus embodiment two provided in an embodiment of the present invention；

Figure 25 is the hardware architecture diagram of cell node embodiment three provided in an embodiment of the present invention；Figure 26 is the hardware architecture diagram of macro base station embodiment three provided in an embodiment of the present invention.Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Load-balancing method provided in an embodiment of the present invention can be used in the isomery planar network architecture being made up of macro base station and small cell Node.Wherein small cell Node can be the low power nodes such as micro-base station, via node, remote radio node, and small cell Node is located in the coverage of macro base station.It is typically all to be constituted one small cell cluster by multiple small cell Nodes and covered in a range of region, the coverage of macro base station to there may be multiple small cell clusters because the coverage of small cell Node is smaller.

Figure 1A to Fig. 1 C is the schematic diagram of cell covering scene, and Figure 1A to Fig. 1 C is several different scenes of small MPS process.A macro base station is only shown in Figure 1A to Fig. 1 C includes a small cell cluster, and small cell cluster includes the situation of three small cell Nodes, but the quantity of macro base station, small cell cluster and small cell Node is not limited in the heterogeneous network scene in the present embodiment.

As shown in Figure 1A, Figure 1A is identical networking mode, macro base station 11 covers a macrocell 12, small cell cluster 13 includes multiple small cell Nodes 14, each small cell Node 14 covers a cell 15, macrocell 12 is in each slight in same carrier frequency F1, small cell cluster 13 with each cell 15 There is corresponding logic to connect between area's node 14, also there is corresponding logic to connect between macro base station 11 and each small cell Node 14.Resource coordination can be carried out between the Signalling exchange between control and each small cell Node 14 so by macro base station 11, each cell 15 and between each cell 15 and macro base station 11.

As shown in Figure 1B, Figure 1B is inter-frequency networking mode, macro base station 11 covers a macrocell 12, small cell cluster 13 includes multiple small cell Nodes 14, each small cell Node 14 covers a cell 15, and macrocell 12 is in carrier frequency F1, and each cell 15 is in carrier frequency F2, there is corresponding logic to connect between each small cell Node 14 in small cell cluster 13, also there is corresponding logic to connect between macro base station 11 and each small cell Node 14.Resource coordination can be carried out between the Signalling exchange between control and each small cell Node 14 so by macro base station 11, each cell 15 and between each cell 15 and macro base station 11.

As shown in Figure 1 C, Fig. 1 C are the independent networking mode of small cell Node, small cell cluster 13 includes multiple small cell Nodes 14, each small cell Node 14 covers a cell 15, there is corresponding logic to connect between each small cell Node 14 that each cell 15 is in carrier frequency F2, small cell cluster 13.The RRM of each cell 15 is to carry out coordinating completion between each cell 15.

For the three kinds small cell covering scene shown in Figure 1A to Fig. 1 C, the load-balancing technique of prior art by macro base station due to that must be carried out the processing of load balancing, and the scene shown in Fig. 1 C be the independent networking of small cell Node, therefore scene shown in Fig. 1 C under can not carry out load balance process.Under scene shown in Figure 1A and Figure 1B, in order to carry out load balance process to small cell Node, each small cell Node in small cell cluster is required for carrying out the interaction of signaling between macro base station, because small cell Node is more in small cell cluster, each small cell Node carries out interacting for signaling all between macro base station can consume substantial amounts of system resource, may cause network congestion.And, macro base station needs to undertake the processing task of many in a network, such as carrier aggregation, Inter-Cell Interference Coordination, these tasks all have very high requirement to the disposal ability of macro base station, if and macro base station carries out load balance process to the signaling that each small cell Node is sent again, the processing load of macro base station can be increased, so as to reduce systematic function.

Fig. 2 is the flow chart of load-balancing method embodiment one provided in an embodiment of the present invention, and the executive agent of the present embodiment is load balancing apparatus, as shown in Fig. 2 the method for the present embodiment includes：

Step S201, load balancing apparatus receives the load state information that the small cell Node in small cell cluster is sent.

Specifically, in the present embodiment, load balancing apparatus is disposed in a network, and load balancing apparatus can be an independent network node, be only completed load balance process；Or load balancing apparatus can also be set Put in the small cell Node of any of small cell cluster, i.e., any one small cell Node in small cell cluster is used for the load balance process of small cell cluster where completing it.Load balancing apparatus receives the load state information that all small cell Nodes in a small cell cluster are sent, and the load state information that small cell Node is sent can be the relevant parameter for the load condition for representing small cell Node.For example load state information can be at least one in the spectral occupancy in slight area, community user number, the network capacity of business, idling-resource rate, the corresponding capacity of reserved resource.Load balancing apparatus is connected with the small cell Node in small cell cluster by Xn mouthfuls, receives the load state information that the small cell Node in small cell cluster is sent.

Step S202, load balancing apparatus determines small cell Node to be adjusted according to the load state information.

Specifically, load balancing apparatus is according to the load state information that small cell Node is sent in the small cell cluster received, it may be determined that the load condition of each small cell Node in small cell cluster.The load condition of small cell Node can be underloading, overload and several situations such as normal.The load condition of small cell Node is the light load that underloading represents small cell Node, can accommodate more users；The load condition of small cell Node represents that the load condition of small cell Node is heavier for overload, can not provide service for the user accessed at present.The overloading threshold and underloading threshold value being stored with load balancing apparatus for different load state informations, if load balancing apparatus is received after the load state information that small cell Node is sent, judge that the load state information is more than corresponding overloading threshold, it is determined that the small cell Node is the small cell Node of overload；Judge that the load state information is less than corresponding underloading threshold value, it is determined that the small cell Node is the small cell Node of underloading.Load balancing apparatus is determined after the small cell Node of overload and the small cell Node of underloading, judge whether that the load condition of the small cell Node of overload can be reduced, the method for reducing the load condition of the small cell Node of overload for example can be that the user of the small cell Node access of overload is switched in the small cell Node of underloading.If load balancing apparatus determines that the load condition of the small cell Node of overload can be reduced, it is determined that need the small cell Node being adjusted.

Step S203, load balancing apparatus is to small cell Node transmission load balancing indication signaling to be adjusted, so that small cell Node to be adjusted carries out corresponding load balancing adjustment according to load balancing signaling.

Specifically, load balancing apparatus passes through the Xn mouthfuls of small cell Node transmission load balancing indication signalings to be adjusted to determination, the load balancing indication signaling is used to make the small cell Node of overload to reduce load or the small cell Node of underloading is increased load, so that the load balancing of the small cell Node in small cell cluster.

The present embodiment, by increasing load balancing apparatus in a network, makes all small cells in small cell cluster Node all reports load state information to load balancing apparatus, the small cell Node that load balancing apparatus determines to need to be adjusted according to the load state information of all small cell Nodes in the small cell cluster received, so that sending signaling indicates that small cell Node to be adjusted carries out load balancing adjustment.Small cell Node in small cell cluster between macro base station without interacting, and the load balancing of small cell cluster can just be realized by only needing to interact with load balancing apparatus, so as to save the process resource and bandwidth resources of macro base station, allow macro base station to use the resource of saving to carry out other business processings, improve systematic function.

Load balance process method provided in an embodiment of the present invention, it is therefore an objective to the load condition of the network node of reduction overload, under the cell covering scene shown in Figure 1A to Fig. 1 C, in fact it could happen that following several situations for needing to carry out load balance process.The first is that have cell node overload in small cell cluster, and there is small cell Node underloading in the small cell cluster, in this case load balancing apparatus oneself can carry out load balance process without macro base station to the small cell Node in small cell cluster, and the user that the small cell Node of overload is accessed is switched in the small cell Node of underloading.Second is to have cell node overload in small cell cluster, and load balancing apparatus judges that the load condition of whole small cell cluster is overweight, in this case the information of the small cell Node of overload is sent to macro base station by load balancing apparatus, if the load condition of macro base station is underloading, the user that can access the small cell Node of overload is switched in macro base station；If the load condition of macro base station is overload, and when having macro base station that load condition is underloading in the macro base station adjacent with the macro base station, the user that can access the small cell Node of overload is switched in the adjacent macro base station of the macro base station.The third is that have small cell Node underloading in small cell cluster, load balancing apparatus judges the load condition underloading of whole small cell cluster, in this case the information of the small cell Node of underloading is sent to macro base station by load balancing apparatus, if the load condition of macro base station is overload, the user of access can be switched in the small cell Node of underloading by macro base station.Following each embodiments illustrate the specific implementation process of several load balance process methods respectively.

In addition, small cell Node can be divided into two kinds according to function, a kind of is complete small cell Node, such as via node, and the small cell Node has independent Physical Cell Identifier（Physical Cell Identity, PCI), and can pass through X2 mouthful with complete scheduling of resource and management function, between small cell Node and carry out Signalling exchanges；Another is non-complete small cell Node, and such as remote radio node, the small cell Node only possesses access function, and not possessing can not be by X2 mouthfuls of progress Signalling exchange between independent Physical Cell Identifier, small cell Node.

Fig. 3 is the flow chart of load-balancing method embodiment two provided in an embodiment of the present invention, and the executive agent of the present embodiment is load balancing apparatus, as shown in figure 3, the method for the present embodiment includes： Step S301, load balancing apparatus receives the load state information that the small cell Node in small cell cluster is sent.

Step S302, load balancing apparatus determines the small cell Node and the underloading small cell Node adjacent with the small cell Node of overload of overload according to the load state information.

Specifically, load balancing apparatus is according to receiving after the load state information that each small cell Node is sent in small cell cluster, according to the overloading threshold and underloading threshold value of default each load state information, it can determine that load state information is more than small cell Node of the small cell Node of overloading threshold for overload, the small cell Node that load state information is less than underloading threshold value is the small cell Node of underloading.For the load of the small cell Node that reduces overload, the user by the small cell Node access of overload is needed to be switched in the small cell Node of underloading, but in the coverage of the only possible small cell Node adjacent positioned at the small cell Node overloaded of user of the small cell Node access of overload.Therefore, after the small cell Node of overload is determined, in addition it is also necessary to it is determined that the small cell Node of the underloading adjacent with the small cell Node of overload, so that the user of access is switched in the small cell Node of adjacent underloading by the small cell Node of overload.If not having the small cell Node of underloading in the adjacent small cell Node of the small cell Node of overload, the load of the small cell Node of the overload can not be reduced.

Step S303, small cell Node transmission load balancing indication signaling from load balancing apparatus to overload, the load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with overloading small cell Node, and the small cell Node of underloading will be switched in the user at overload cell coverage edge according to the Physical Cell Identifier of the small cell Node of underloading for indicating to overload small cell Node.

Specifically, load balancing apparatus determines the small cell Node of overload and determines have in the small cell Node adjacent with the small cell Node of the overload after the small cell Node of underloading, by the Xn mouthfuls of small cell Node transmission load balancing indication signalings to the overload, the load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload.The small cell Node of overload is received after the load balancing indication signaling, according to the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, the user in the overload cell coverage edge is switched in the small cell Node of the underloading.The small cell Node of overload is only capable of the user in the range of the cell coverage of underloading being switched in the cell of underloading, therefore, the small cell Node of overload will cover edge and the user in the small cell coverage area of underloading is switched in underloading cell.In this manner it is possible to reduce the load condition for overloading small cell Node, and it is that user has been switched in the small cell Node of underloading, other cell node overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.In addition, the load state information of the small cell Node of underloading can also be included in load balancing indication signaling, so that mistake The small cell Node carried is known and can be switched to how many user in the small cell Node of underloading；Or can also include being switched to the user of how many ratio into recommended value in the small cell Node of underloading in load balancing indication signaling, so that certain customers are switched in the small cell Node of underloading by the small cell Node of overload.

It should be noted that the method for the present embodiment can be used in the small cell covering scene shown in Figure 1A to Fig. 1 C.In the scene shown in Figure 1A and Figure 1B, load balancing apparatus judges the small cell Node for having overload in small cell cluster, and when judging that load balance process can be carried out inside small cell cluster, the method that the present embodiment can be used；In scene shown in Fig. 1 C, due to the presence without macro base station, load balancing apparatus can only be used to carry out load balance process inside small cell cluster.In addition, the load balancing indication signaling that load balancing apparatus is sent to the small cell Node of overload in the present embodiment is used to make the small cell Node of overload that the user of access is switched in the cell of underloading, this needs the small cell Node for the small cell Node and underloading overloaded to be complete small cell Node, and the switching of user can be completed by the Signalling exchange between the small cell Node of overload and the small cell Node of underloading.

Fig. 4 is the flow chart of load-balancing method embodiment three provided in an embodiment of the present invention, and the executive agent of the present embodiment is load balancing apparatus, as shown in figure 4, the method for the present embodiment includes：

Step S401, load balancing apparatus receives the load state information that the small cell Node in small cell cluster is sent.

Step S402, load balancing apparatus determines the small cell Node and the underloading small cell Node adjacent with the small cell Node of overload of overload according to the load state information.

Step S403, load balancing apparatus is to the small cell Node of the overload underloading small cell Node transmission load balancing indication signaling adjacent with the small cell Node of overload, for indicating the small cell Node reduction cell own reference signal of overload（Cell-specific Reference Signals, CRS) power, for indicating that the small cell Node of underloading improves cell own reference signal power.

Specifically, load balancing apparatus determines the small cell Node of overload and determines have in the small cell Node adjacent with the small cell Node of the overload after the small cell Node of underloading, can also reduce the load of the small cell Node of overload by adjusting the method for small cell coverage area.Load balancing apparatus now passes through the Xn mouthfuls of small cell Nodes to the overload underloading small cell Node transmission load balancing indication signaling adjacent with the small cell Node of overload, the load balancing indication signaling is the signaling consulted for border, for indicating the small cell Node reduction cell own reference signal power of overload, for indicating that the small cell Node of underloading improves cell own reference signal power, equivalent to the coverage for reducing the small cell Node of overload, increase the coverage of the small cell Node of underloading.So, user of the original place in overload cell coverage edge could switch to In the small cell Node of underloading adjacent with overloading small cell Node.In this manner it is possible to reduce the load condition for overloading small cell Node, and it is that user has been switched in the small cell Node of underloading, other cell node overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.The power adjustment that load balancing indication signaling includes 1 bit is indicated and CRS power adjustments, indicates the size for the power that the small cell Node of overload and the small cell Node of underloading are adjusted.

It should be noted that the method for the present embodiment can be used in the small cell covering scene shown in Figure 1A to Fig. 1 C.In the scene shown in Figure 1A and Figure 1B, load balancing apparatus judges the small cell Node for having overload in small cell cluster, and when judging that load balance process can be carried out inside small cell cluster, the method that the present embodiment can be used；In scene shown in Fig. 1 C, due to the presence without macro base station, load balancing apparatus can only be used to carry out load balance process inside small cell cluster.In addition, the load balancing indication signaling that load balancing apparatus is sent to the small cell Node of overload in the present embodiment is used to make the small cell Node of small cell Node and underloading of overload to change cell own reference signal power, Signalling exchange need not be carried out by overloading in small cell Node and the small cell Node of underloading, therefore, it can be complete small cell Node or non-complete small cell Node to overload small cell Node and the small cell Node of underloading, that is to say, that the method for the present embodiment is used suitable for various types of small cell Nodes.

Fig. 5 is the flow chart of load-balancing method example IV provided in an embodiment of the present invention, and the executive agent of the present embodiment is load balancing apparatus, as shown in figure 5, the method for the present embodiment includes：

Step S501, load balancing apparatus receives the load state information that the small cell Node in small cell cluster is sent.

Step S502, load balancing apparatus determines the load condition of small cell cluster according to the load state information.

Specifically, load balancing apparatus is received after the load state information that all small cell Nodes are sent in small cell cluster, and the load condition of small cell cluster can be obtained by assessing.What the load condition of small cell cluster was represented is the loading condition of whole small cell cluster, load balancing apparatus can assess the load condition for obtaining small cell cluster by a variety of methods, such as load balancing apparatus can calculate the average load status information of all small cell Nodes in the small cell Node of cluster, according to the overloading threshold of default small cell cluster and the load condition of the small cell cluster of underloading threshold decision；Or load balancing apparatus can judge the load condition of small cell cluster according to the quantity of the small cell Node of overload or the small cell Node of underloading.Load balancing apparatus can determine the load condition of small cell cluster again when the method according to Fig. 2 to embodiment illustrated in fig. 4 can not reduce the load condition of small cell Node alone；Or load balancing apparatus can not be carried out actively to small cell Node Load balance process, but begin to determine the load condition of small cell cluster after receiving the load dress state of each small cell Node in small cell cluster.Situation of the load condition of small cell cluster for overload is only shown in the present embodiment.

The load state information of small cell cluster is sent to macro base station by step S503, load balancing apparatus, so that macro base station generates load balancing indication signaling according to the load state information of the small cell cluster and the load condition of macro base station.

Specifically, load balancing apparatus passes through the Xm mouthfuls of load state informations to the small cell cluster of macro base station transmission.The node that macro base station is adjusted according to needed for being determined the load state information of the small cell cluster received and the load condition of macro base station itself, it is therefore an objective to which making the small cell Node of overload reduces load.Here it is divided into two kinds of situations, first is that the load condition of small cell cluster is overload, the load condition of macro base station is underloading, at this moment need to reduce the load condition of small cell cluster, and the user that can access the small cell Node of overload is switched in macro base station, now macro base station generation load balancing indication signaling, then performs step S5041;Second is that the load condition of small cell cluster is overload, the load condition of macro base station is also overload, at this moment need also exist for reducing the load condition of small cell cluster, now macro base station can continue to judge to whether there is the macro base station of underloading in adjacent macro base station, if in the presence of, the user that can then the small cell Node of overload be accessed is switched in the adjacent macro base station of macro base station, now performs step S5042.

Step S5041, load balancing apparatus receives the load balancing indication signaling that macro base station is sent, and the load balancing indication signaling is used to the user that the small cell Node of overload is accessed being switched in macro base station.

Specifically, load balancing apparatus receives the load balancing indication signaling that macro base station is sent by Xm mouthfuls, and the signaling is used to the user that the small cell Node of overload is accessed being switched in macro base station.The method that the user that the small cell Node of overload is accessed is switched in macro base station has two kinds, and a kind of is the method directly switched, and another is the method for changing coverage.In the method directly switched, the load balancing indication signaling that load balancing apparatus is received includes the Physical Cell Identifier of macro base station, it can in addition contain can be the portfolio size that share of this small cell cluster including macro base station, or the information such as user's ratio.In the method for changing coverage, the load balancing indication signaling that load balancing apparatus is received is the signaling consulted for border, coverage for changing the small cell Node of overload, it can in addition contain the portfolio size that can be shared including macro base station for this small cell cluster, or the information such as user's ratio.

Step S5051, load balancing apparatus determines the small cell Node of overload according to the load state information.

Specifically, in step S502, load balancing apparatus is according to all small cell Nodes in small cell cluster Load state information determine in the load condition of small cell cluster, this step that load balancing apparatus determines the load condition of small cell Node according to the load state information of each small cell Node, finds out the small cell Node of overload.Load balancing apparatus is according to the overloading threshold of default each load state information, it may be determined that load state information is more than small cell Node of the small cell Node of overloading threshold for overload.

User in covering edge is switched in macro base station by step S5061, load balancing apparatus to the small cell Node transmission load balancing indication signaling of overload so as to overload small cell Node.

Specifically, load balancing apparatus is determined after the small cell Node of overload, and the load balancing indication signaling that macro base station is sent is forwarded by the Xn mouthfuls of small cell Nodes to the overload.If using the method directly switched, then the load balancing indication signaling includes the Physical Cell Identifier of macro base station, the small cell Node of overload is received after the load balancing indication signaling, according to the Physical Cell Identifier of macro base station, the user in the overload cell coverage edge is switched in macro base station.If using the method for changing coverage, then the load balancing indication signaling is the signaling consulted for border, for indicating the small cell Node reduction cell own reference signal power of overload, equivalent to the coverage for reducing the small cell Node of overload, so, user of the original place in overload cell coverage edge could switch in macro base station.The purpose of above two method is all that the user for overloading small cell Node access is switched in macro base station, although the means used are different, but the load condition for overloading small cell Node can be reduced, and it is that the user for overloading small cell Node access has been switched in the macro base station of underloading, other small cell Node and macro base station overloads can't be made, it is achieved thereby that the load balancing of small cell cluster.

Step S5042, load balancing apparatus receives the load balancing indication signaling that macro base station is sent, and the load balancing indication signaling is used to the user that the small cell Node of overload is accessed being switched in the macro base station adjacent with macro base station.

Specifically, load balancing apparatus receives the load balancing indication signaling that macro base station is sent by Xm mouthfuls, and the signaling is used to the user that the small cell Node of overload is accessed being switched in the adjacent macro base station of macro base station.Macro base station can know the load condition of adjacent macro base station during being interacted before with adjacent macro base station by X2 mouthfuls, if there is the macro base station of underloading in the macro base station adjacent with macro base station, the user that can access the small cell Node overloaded in small cell cluster is switched in the macro base station of the underloading.The method that the user that the small cell Node of overload is accessed is switched in the macro base station adjacent with macro base station has two kinds, and a kind of is the method directly switched, and another is the method for changing coverage.In the method directly switched, the load balancing indication signaling that load balancing apparatus is received includes the Physical Cell Identifier of the macro base station adjacent with macro base station, it can in addition contain the industry that can be shared including the macro base station adjacent with macro base station for this small cell cluster Business amount size, or the information such as user's ratio.In the method for changing coverage, the load balancing indication signaling that load balancing apparatus is received is the signaling consulted for border, coverage for changing the small cell Node of overload, it can in addition contain the portfolio size that can be shared including the macro base station adjacent with macro base station for this small cell cluster, or the information such as user's ratio.

Step S5052, load balancing apparatus determines the small cell Node of overload according to the load state information.

Specifically, in step S502, load balancing apparatus is the load condition that small cell cluster is determined according to the load state information of all small cell Nodes in small cell cluster, in this step, load balancing apparatus determines the load condition of small cell Node according to the load state information of each small cell Node, finds out the small cell Node of overload.Load balancing apparatus is according to the overloading threshold of default each load state information, it may be determined that load state information is more than small cell Node of the small cell Node of overloading threshold for overload.

User in covering edge is switched in the macro base station adjacent with macro base station by step S5062, load balancing apparatus to the small cell Node transmission load balancing indication signaling of overload so as to overload small cell Node.

Specifically, load balancing apparatus is determined after the small cell Node of overload, and the load balancing indication signaling that macro base station is sent is forwarded by the Xn mouthfuls of small cell Nodes to the overload.If using the method directly switched, then the load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with macro base station, the small cell Node of overload is received after the load balancing indication signaling, according to the Physical Cell Identifier of the macro base station adjacent with macro base station, the user in the overload cell coverage edge is switched in the macro base station adjacent with macro base station.If using the method for changing coverage, then the load balancing indication signaling is the signaling consulted for border, for indicating the small cell Node reduction cell own reference signal power of overload, equivalent to the coverage for reducing the small cell Node of overload, so, user of the original place in overload cell coverage edge could switch in the macro base station adjacent with macro base station.The purpose of above two method is all that the user for overloading small cell Node access is switched in the macro base station adjacent with macro base station, although the means used are different, but the load condition for overloading small cell Node can be reduced, and it is that the user for overloading small cell Node access has been switched in the macro base station of underloading, other small cell Node and macro base station overloads can't be made, it is achieved thereby that the load balancing of small cell cluster.

It should be noted that the method for the present embodiment can be used in the cell covering scene shown in Figure 1A and Figure 1B.Load balancing apparatus is received after the load state information that each small cell Node is sent in small cell cluster in the present embodiment, determines the load condition of small cell cluster by certain mechanism, and to macro base station report Accuse, make macro base station by judging that the load condition of itself and the load condition of small cell cluster generate load balancing indication signaling, so as to reduce the load of the small cell Node overloaded in small cell cluster.Each small cell Node in small cell cluster with macro base station without carrying out Signalling exchange, only load balancing apparatus is interacted with macro base station, and load balancing apparatus is the load state information for just sending small cell cluster after the load condition that small cell cluster is obtained after the load state information that each small cell Node is sent in small cell cluster is handled to macro base station, macro base station only needs to determine load balance process strategy according to the load condition and the load condition of itself of small cell cluster, therefore influence very little of the present embodiment to macro base station disposal ability, and the signaling used is to the consumption of Internet resources also very little.In addition, in the present embodiment, if the user that the small cell Node of overload is accessed is switched in macro base station or in the macro base station adjacent with macro base station using the method directly switched, the load balancing indication signaling that load balancing apparatus is sent to the small cell Node of overload is used to make the small cell Node of overload that the user of access is switched in the macro base station of underloading, this small cell Node for needing to overload is complete small cell Node, and the switching of user can be completed by the Signalling exchange between the small cell Node of overload and the macro base station of underloading.If the user that the small cell Node of overload is accessed is switched in macro base station or in the macro base station adjacent with macro base station by the method consulted using border, the load balancing indication signaling that load balancing apparatus is sent to the small cell Node of overload is used to make the small cell Node of overload change cell own reference signal power, Signalling exchange need not be carried out by overloading between small cell Node and the target macro base station of switching, therefore, it can be complete small cell Node or non-complete small cell Node to overload small cell Node, that is this method is used suitable for various types of small cell Nodes.

Further, in each embodiment shown in Fig. 3 to Fig. 5, load balancing apparatus is to identified small cell Node transmission load balancing indication signaling to be adjusted, after the cell of overload is according to the reduction load of load balancing indication signaling, load balancing apparatus can further receive the load state information that the small cell Node of overload is sent, if the load state information that the small cell Node of overload is sent is still overload, then load balancing apparatus sends overload indication signaling to small cell Node is overloaded, the overload indication signaling is used for the speed of the user less than pre-set priority of the small cell Node reduction access of instruction overload or deletes the user for being less than pre-set priority.Specifically, when load balancing apparatus according to it is default strategy to overload small cell Node send load balancing indication signaling after, the small cell Node of overload is still in overload, then load balancing apparatus, which may determine that, can not reduce the load of the small cell Node of the overload using default load balancing, now load balancing apparatus can send overload indication signaling to the small cell Node of overload, make the small cell Node of overload reduces load by reducing the speed of the user less than pre-set priority of access or deleting the means for the user for being less than pre-set priority. Further, in each embodiment shown in Fig. 2 to Fig. 5, load balancing apparatus is received before the load state information that the small cell Node in small cell cluster is sent, in addition to：Small cell Node of the load balancing apparatus into small cell cluster sends load condition solicited message, and the load condition solicited message is used to indicate that small cell Node reports load state information.Specifically, load balancing apparatus can periodically receive the load state information that each small cell Node is sent in small cell cluster.In addition, load balancing apparatus can also send load condition solicited message in the small cell Node into small cell cluster, after indicating that small cell Node in small cell cluster sends load state information, the load state information that each small cell Node is sent in small cell cluster is received again, so can further reduce the influence that each small cell Node reports load state information to cause Internet resources in small cell cluster.

Further, in each embodiment shown in Fig. 2 to Fig. 5, the load state information that each small cell Node that load balancing apparatus is received is reported includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Fig. 6 is the flow chart of load-balancing method embodiment five provided in an embodiment of the present invention, and the executive agent of the present embodiment is load balancing apparatus, as shown in fig. 6, the method for the present embodiment includes：

Step S601, load balancing apparatus receives the load state information that the small cell Node in small cell cluster is sent.

Step S602, load balancing apparatus determines the load condition of small cell cluster according to the load state information.

Specifically, load balancing apparatus is received after the load state information that all small cell Nodes are sent in small cell cluster, and the load condition of small cell cluster can be obtained by assessing.What the load condition of small cell cluster was represented is the loading condition of whole small cell cluster, load balancing apparatus can assess the load condition for obtaining small cell cluster by a variety of methods, such as load balancing apparatus can calculate the average load status information of all small cell Nodes in the small cell Node of cluster, according to the overloading threshold of default small cell cluster and the load condition of the small cell cluster of underloading threshold decision；Or load balancing apparatus can judge the load condition of small cell cluster according to the quantity of the small cell Node of overload or the small cell Node of underloading.The load condition that small cell cluster is only shown in the present embodiment is the situation of underloading.

Step S603, the load state information of small cell cluster is sent to macro base station by load balancing apparatus, so that macro base station indicates that specifically load balancing apparatus is believed by the Xm mouthfuls of load conditions for sending small cell cluster to macro base station according to the load state information of the small cell cluster and the load condition generation overload of macro base station Breath.In the present embodiment, the load condition of small cell cluster is underloading, and the load condition of macro base station is overload, and macro base station determines to need to reduce the load condition of macro base station, the user that macro base station is accessed can be switched in the small cell Node of underloading, now generation overload indication signaling.Because the coverage of macro base station is more much larger than small cell Node, small cell Node is located in the coverage of macro base station, therefore user macro base station accessed is switched to the method that the small cell Node of underloading can not use concept transfer power, the method that user can only be used to switch.

Step S604, load balancing apparatus receives the overload indication signaling that macro base station is sent.

Specifically, load balancing apparatus receives the overload indication signaling that macro base station is sent by Xm mouthfuls, and the certain customers that the signaling is used to access macro base station are switched in the small cell Node of underloading.

Step S605, load balancing apparatus determines the small cell Node of underloading according to the load state information.Specifically, in step S602, load balancing apparatus is the load condition that small cell cluster is determined according to the load state information of all small cell Nodes in small cell cluster, in this step, load balancing apparatus determines the load condition of small cell Node according to the load state information of each small cell Node, finds out the small cell Node of underloading.Load balancing apparatus is according to the underloading threshold value of default each load state information, it may be determined that the small cell Node that load state information is less than underloading threshold value is the small cell Node of underloading.

Step S606, load balancing apparatus sends overload response signaling to macro base station, so that the user in the range of underloading cell coverage is switched to the small cell Node of underloading by macro base station according to the Physical Cell Identifier of the small cell Node of underloading.

Specifically, load balancing apparatus is determined after the small cell Node of underloading, by Xm mouthfuls overload response signaling is sent to macro base station, the overload response signaling includes the physical area sign of the small cell Node of underloading, macro base station is received after overload response signaling, according to the Physical Cell Identifier of the small cell Node of underloading, the user in the range of the underloading cell coverage that macro base station is accessed is switched in the small cell Node of underloading.The load state information for the small cell Node that can also include underloading in response signaling is overloaded, how many user can be switched in the small cell Node of underloading so that macro base station is known；Or overload the recommended value that can also include the user of how many ratio being switched in the small cell Node of underloading in response signaling, so that certain customers are switched in the small cell Node of underloading by macro base station.The present embodiment can reduce the load condition of macro base station, and be that the certain customers of access have been switched in the macro base station of underloading, can't make other cell node overloads, it is achieved thereby that the load balancing of whole network.

It should be noted that the method for the present embodiment can be used in the cell covering scene shown in Figure 1A and Figure 1B.Load balancing apparatus receives what each small cell Node in small cell cluster was sent in the present embodiment After load state information, the load condition of small cell cluster is determined by certain mechanism, and reported to macro base station, make macro base station by judging that the load condition of itself and the load condition of small cell cluster generate load balancing indication signaling, so as to reduce the load of macro base station.Each small cell Node in small cell cluster with macro base station without carrying out Signalling exchange, only load balancing apparatus is interacted with macro base station, and load balancing apparatus is the load state information for just sending small cell cluster after the load condition that small cell cluster is obtained after the load state information that each small cell Node is sent in small cell cluster is handled to macro base station, macro base station only needs to determine load balance process strategy according to the load condition and the load condition of itself of small cell cluster, therefore influence very little of the present embodiment to macro base station disposal ability, and the signaling used is to the consumption of Internet resources also very little.In addition, in the present embodiment, the overload response signaling that load balancing apparatus is sent to macro base station is used to make macro base station that the user of access is switched in the small cell Node of underloading, and this needs the small cell Node of underloading to be complete small cell Node, can realize.

Further, in embodiment illustrated in fig. 6, load balancing apparatus is received before the load state information that the small cell Node in small cell cluster is sent, in addition to：Small cell Node of the load balancing apparatus into small cell cluster sends load condition solicited message, and the load condition solicited message is used to indicate that small cell Node reports load state information.Specifically, load balancing apparatus can periodically receive the load state information that each small cell Node is sent in small cell cluster.In addition, load balancing apparatus can also send load condition solicited message in the small cell Node into small cell cluster, after indicating that small cell Node in small cell cluster sends load state information, the load state information that each small cell Node is sent in small cell cluster is received again, so can further reduce the influence that each small cell Node reports load state information to cause Internet resources in small cell cluster.

Further, in embodiment illustrated in fig. 6, the load state information that each small cell Node that load balancing apparatus is received is reported includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Fig. 7 is the flow chart of load-balancing method embodiment six provided in an embodiment of the present invention, and the executive agent of the present embodiment is small cell Node, as shown in fig. 7, the method for the present embodiment includes：

Step S701, small cell Node sends load state information to load balancing apparatus.

Specifically, in the present embodiment, load balancing apparatus is disposed in a network, and load balancing apparatus can be an independent network node, be only completed load balance process；Or load balancing apparatus can also be arranged in the small cell Node of any of small cell cluster, i.e., any one small cell Node in small cell cluster is used for the load balance process of small cell cluster where completing it.Small cell Node sends negative to load balancing apparatus Status information is carried, the load state information that small cell Node is sent can be the relevant parameter for the load condition for representing small cell Node.For example load state information can be at least one in the spectral occupancy in slight area, community user number, the network capacity of business, idling-resource rate, the corresponding capacity of reserved resource.Small cell Node is connected with load balancing apparatus by Xn mouthfuls, and load state information is sent to load balancing apparatus.All small cell Nodes in small cell cluster all need to send load state information to load balancing apparatus.

Step S702, the load balancing indication signaling that small cell Node balancing received load device is sent, the load balancing indication signaling is what load balancing apparatus was determined according to the load state information.

Specifically, after load balancing apparatus receives the load state information that each small cell Node is sent in small cell cluster, small cell Node can receive the load balancing indication signaling that load balancing apparatus is sent by Xn mouthfuls, and the load balancing indication signaling is that load balancing apparatus is determined according to each small cell Node volume load state information received.Load balancing apparatus is according to the load state information that small cell Node is sent in the small cell cluster received, it may be determined that the load condition of each small cell Node in small cell cluster.The load condition of small cell Node can be underloading, overload and several situations such as normal.The load condition of small cell Node is the light load that underloading represents small cell Node, can accommodate more users；The load condition of small cell Node represents that the load condition of small cell Node is heavier for overload, can not provide service for the user accessed at present.The overloading threshold and underloading threshold value being stored with load balancing apparatus for different load state informations, if load balancing apparatus is received after the load state information that small cell Node is sent, judge that the load state information is more than corresponding overloading threshold, it is determined that the small cell Node is the small cell Node of overload；Judge that the load state information is less than corresponding underloading threshold value, it is determined that the small cell Node is the small cell Node of underloading.Load balancing apparatus is determined after the small cell Node of overload and the small cell Node of underloading, judge whether that the load condition of the small cell Node of overload can be reduced, the method for reducing the load condition of the small cell Node of overload for example can be that the user of the small cell Node access of overload is switched in the small cell Node of underloading.If load balancing apparatus determines that the load condition of the small cell Node of overload can be reduced, it is determined that need the small cell Node being adjusted.The small cell Node that load balancing apparatus is adjusted the need for determining can receive the load balancing indication signaling that load balancing apparatus is sent.

Step S703, small cell Node carries out load balancing adjustment according to load balancing signaling.

Specifically, small cell Node carries out load balancing adjustment according to the load balancing indication signaling received, and the load balancing adjustment that small cell Node is carried out includes reduction load or increase load, so that the load balancing of the small cell Node in small cell cluster.

Fig. 8 is the flow chart of load-balancing method embodiment seven provided in an embodiment of the present invention, and the executive agent of the present embodiment is small cell Node, as shown in figure 8, the method for the present embodiment includes：

Step S801, small cell Node sends load state information to load balancing apparatus.

Step S802, the load balancing indication signaling that small cell Node balancing received load device is sent.Specifically, small cell Node is sent after load state information to load balancing apparatus, load balancing apparatus can be according to the different load condition of small cell Node, the different load balancing indication signaling of generation, so that small cell Node can receive the different load balancing indication signalings that load balancing apparatus is sent by Xn mouthfuls.The present embodiment shows that small cell Node is several load balance process methods under overload situations.

The first situation is：Load balancing signaling includes the Physical Cell Identifier of the small cell Node of the underloading adjacent with small cell Node.Such case is used in the cell covering scene shown in Figure 1A to Fig. 1 C, in the scene shown in Figure 1A and Figure 1B, load balancing apparatus judges the small cell Node for having overload in small cell cluster, and when judging that load balance process can be carried out inside small cell cluster, the method that the present embodiment can be used；In scene shown in Fig. 1 C, due to the presence without macro base station, load balancing apparatus can only be used to carry out load balance process inside small cell cluster.In addition, cell needs user being switched in the small cell Node of underloading, it is necessary to which small cell Node is complete small cell Node in this situation.And it can also include the load state information of the small cell Node of underloading in load balancing indication signaling, or the recommended value that is switched to the user of how many ratio in the small cell Node of underloading can also be included in load balancing indication signaling.Then step S8031 is performed.

Second of situation be：Load balancing indication signaling is used to indicate that small cell Node reduces cell own reference signal power according to the instruction of load balancing indication signaling.Such case is used in the cell covering scene shown in Figure 1A to Fig. 1 C, in the scene shown in Figure 1A and Figure 1B, load balancing apparatus judges the small cell Node for having overload in small cell cluster, and when judging that load balance process can be carried out inside small cell cluster, the method that the present embodiment can be used；In scene shown in Fig. 1 C, due to the presence without macro base station, load balancing apparatus can only be used to carry out load balance process inside small cell cluster.In addition, this The load balancing indication signaling that load balancing apparatus is sent to small cell Node in situation is used to make small cell Node change cell own reference signal power, Signalling exchange need not be carried out between small cell Node, therefore, small cell Node can be complete small cell Node or non-complete small cell Node, that is to say, that the method for the present embodiment is used suitable for various types of small cell Nodes.And the power adjustment that load balancing indication signaling includes 1 bit is indicated and CRS power adjustments, indicates the size for the power that the small cell Node of overload is adjusted.Then step S8032 is performed.

The third situation is：Load balancing signaling includes the Physical Cell Identifier of macro base station.Such case is used in the cell covering scene shown in Figure 1A and Figure 1B.Load balancing apparatus is received after the load state information that each small cell Node is sent in small cell cluster, the load condition of small cell cluster is determined by certain mechanism, and reported to macro base station, make macro base station by judging that the load condition of itself and the load condition of small cell cluster generate load balancing indication signaling, so as to reduce the load of the small cell Node overloaded in small cell cluster.Each small cell Node in small cell cluster with macro base station without carrying out Signalling exchange, only load balancing apparatus is interacted with macro base station, and load balancing apparatus is the load state information for just sending small cell cluster after the load condition that small cell cluster is obtained after the load state information that each small cell Node is sent in small cell cluster is handled to macro base station, macro base station only needs to determine load balance process strategy according to the load condition and the load condition of itself of small cell cluster, therefore influence very little of the present embodiment to macro base station disposal ability, and the signaling used is to the consumption of Internet resources also very little.In addition, cell needs user being switched in macro base station, it is necessary to which small cell Node is complete small cell Node in this situation.And can also include the recommended value that can also include the user of how many ratio being switched in macro base station in the load state information of macro base station, or load balancing indication signaling in load balancing indication signaling.Then step S8033 is performed.

4th kind of situation be：Load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with macro base station.Such case is used in the cell covering scene shown in Figure 1A and Figure 1B.Load balancing apparatus is received after the load state information that each small cell Node is sent in small cell cluster, the load condition of small cell cluster is determined by certain mechanism, and reported to macro base station, make macro base station by judging that the load condition of itself and the load condition of small cell cluster generate load balancing indication signaling, so as to reduce the load of the small cell Node overloaded in small cell cluster.Each small cell Node in small cell cluster with macro base station without carrying out Signalling exchange, only load balancing apparatus is interacted with macro base station, and load balancing apparatus is the load state information for just sending small cell cluster after the load condition that small cell cluster is obtained after the load state information that each small cell Node is sent in small cell cluster is handled to macro base station, macro base station only needs to determine load balance process strategy according to the load condition and the load condition of itself of small cell cluster, therefore the present embodiment is to macro base station processing The influence very little of ability, and the signaling used is to the consumption of Internet resources also very little.In addition, in this situation, cell needs user being switched in the macro base station adjacent with macro base station, it is necessary to which small cell Node is complete small cell Node.And can also include the recommended value that can also include the user of how many ratio being switched in the macro base station adjacent with macro base station in the load state information of the macro base station adjacent with macro base station, or load balancing indication signaling in load balancing indication signaling.Then step S8034 is performed.

User in cell coverage edge is switched to the small cell Node of underloading by step S8031, small cell Node according to the Physical Cell Identifier of the small cell Node of underloading.

Specifically, small cell Node, according to the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, the user in cell coverage edge is switched in the small cell Node of underloading according to the instruction of load balancing indication signaling.Small cell Node is only capable of the user in the range of the cell coverage of underloading being switched in the cell of underloading, therefore, and small cell Node will cover edge and the user in the small cell coverage area of underloading is switched in the small cell of underloading.In this manner it is possible to reduce the load condition of small cell Node, and it is that user has been switched in the small cell Node of underloading, other cell node overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.

Step S8032, small cell Node reduces cell own reference signal power according to the instruction of load balancing indication signaling.

Specifically, small cell Node reduces cell own reference signal power according to the instruction of load balancing indication signaling, equivalent to the coverage for reducing small cell Node.In addition, in order that small cell Node is due to the user's re-accessing network for reducing coverage and losing, load balancing apparatus can indicate that the small cell Node of the underloading adjacent with small cell Node improves cell own reference signal power, be switched to equivalent to by user in the small cell Node of underloading；If or the load condition of macro base station is underloading, can be accessed by grand base base station due to the user that small cell Node reduces coverage and loses；Or if the load condition of the macro base station adjacent with macro base station is underloading, the user that can be lost by the grand base base station access adjacent with macro base station due to small cell Node reduction coverage.In this manner it is possible to reduce the load condition of small cell Node, and it is that user has been switched in the node of underloading, other small cell Node or macro base station overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.

User in cell coverage edge is switched to macro base station by step S8033, small cell Node according to the Physical Cell Identifier of macro base station.

Specifically, small cell Node, according to the Physical Cell Identifier of macro base station, the user in cell coverage edge is switched in macro base station according to the instruction of load balancing indication signaling.So, so that it may To reduce the load condition of small cell Node, and it is that user has been switched in the macro base station of underloading, other small cell Node or macro base station overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.

User in cell coverage edge is switched to the macro base station adjacent with macro base station by step S8034, small cell Node according to the Physical Cell Identifier of the macro base station adjacent with macro base station.

Specifically, small cell Node, according to the Physical Cell Identifier of the macro base station adjacent with macro base station, the user in cell coverage edge is switched in the macro base station adjacent with macro base station according to the instruction of load balancing indication signaling.In this manner it is possible to reduce the load condition of small cell Node, and it is that user has been switched in the macro base station of underloading, other small cell Node or macro base station overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.

Fig. 9 is the flow chart of load-balancing method embodiment eight provided in an embodiment of the present invention, and the executive agent of the present embodiment is small cell Node, as shown in figure 9, the method for the present embodiment includes：

Step S901, small cell Node sends load state information to load balancing apparatus.

Step S902, the load balancing indication signaling that small cell Node balancing received load device is sent, load balancing indication signaling is used to indicate that small cell Node improves cell own reference signal power.

Specifically, small cell Node is sent after load state information to load balancing apparatus, load balancing apparatus can be according to the different load condition of small cell Node, the different load balancing indication signaling of generation, so that small cell Node can receive the different load balancing indication signalings that load balancing apparatus is sent by Xn mouthfuls.The present embodiment shows that small cell Node is the load balance process method in the case of underloading.If load balancing apparatus judges small cell Node for underloading, and when having the small cell Node of overload in the small cell Node adjacent with small cell Node, the load balancing indication signaling that small cell Node can be sent with balancing received load device, cell own reference signal power for improving small cell Node, and adjacent with the small cell Node small cell Node of overload can receive load balancing apparatus transmission be used for reduce the load balancing indication signaling of cell own reference signal power.

The present embodiment is used in the cell covering scene shown in Figure 1A to Fig. 1 C, in the scene shown in Figure 1A and Figure 1B, load balancing apparatus judges the small cell Node for having overload in small cell cluster, and when judging that load balance process can be carried out inside small cell cluster, the method that the present embodiment can be used；In scene shown in Fig. 1 C, due to the presence without macro base station, load balancing apparatus can only be used to carry out load balance process inside small cell cluster.In addition, the load balancing indication signaling that load balancing apparatus is sent to small cell Node in the present embodiment is used to make small cell Node change cell own reference signal power, it is slight Signalling exchange need not be carried out between area's node, therefore, small cell Node can be complete small cell Node or non-complete small cell Node, that is to say, that the method for the present embodiment is used suitable for various types of small cell Nodes.And the power adjustment that load balancing indication signaling includes 1 bit is indicated and CRS power adjustments, indicates the size for the power that the small cell Node of underloading is adjusted.

Step S903, small cell Node is according to the raising cell own reference signal power of load balancing indication signaling.

Specifically, cell Node improves cell own reference signal power according to the instruction of load balancing indication signaling, equivalent to the coverage for increasing small cell Node.In addition, load balancing apparatus indicates the small cell Node reduction cell own reference signal power of the overload adjacent with small cell Node, it has been switched to equivalent to by the user for overloading small cell Node access in the small cell Node of underloading.In this manner it is possible to reduce the load condition that small cell Node is overloaded in small cell cluster, and it is that user has been switched in the small cell Node of underloading, other small cell Node or macro base station overloads in small cell cluster can't be made.It is achieved thereby that the load balancing of small cell cluster.

Further, in Fig. 8 and embodiment illustrated in fig. 9, small cell Node is carried out according to load balancing signaling after load balancing adjustment, is also comprised the following steps：Small cell Node sends overload messages to load balancing apparatus；The overload indication signaling that small cell Node balancing received load device is sent；The speed of the user less than pre-set priority of small cell Node reduction access deletes the user for being less than pre-set priority.Specifically, the load balancing indication signaling that small cell Node is sent according to load balancing apparatus is carried out after load balancing adjustment, if load condition is still overload, overload messages are sent to load balancing apparatus.If load balancing apparatus knows that the load condition of the small cell Node after load balancing is still overload, then load balancing apparatus, which may determine that, can not reduce the load of the small cell Node of the overload using default load balancing, now load balancing apparatus can send overload indication signaling to small cell Node, small cell Node is reduced load less than the means of the user of pre-set priority by the speed or deletion of the user less than pre-set priority of reduction access.

Further, in each embodiment shown in Fig. 7 to Fig. 9, small cell Node is sent to load balancing apparatus before load state information, in addition to：The load condition solicited message that small cell Node balancing received load device is sent, the load condition solicited message is used to indicate that small cell Node reports load state information.Specifically, small cell Node periodically can send load state information to load balancing apparatus.In addition, small cell Node can also send load state information after the load condition solicited message of load balancing apparatus transmission is received, then to load balancing apparatus.So can further it reduce each slight in small cell cluster Area's node reports the influence that load state information is caused to Internet resources.

Further, in each embodiment shown in Fig. 7 to Fig. 9, the load state information that small cell Node is reported to load balancing apparatus includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 10 is the flow chart of load-balancing method embodiment nine provided in an embodiment of the present invention, and the executive agent of the present embodiment is small cell Node, and as shown in Figure 10, the method for the present embodiment includes：

Step S1001, small cell Node sends load state information to load balancing apparatus.

Specifically, in the present embodiment, load balancing apparatus is disposed in a network, and load balancing apparatus can be an independent network node, be only completed load balance process；Or load balancing apparatus can also be arranged in the small cell Node of any of small cell cluster, i.e., any one small cell Node in small cell cluster is used for the load balance process of small cell cluster where completing it.Small cell Node sends load state information to load balancing apparatus, and the load state information that small cell Node is sent can be the relevant parameter for the load condition for representing small cell Node.For example load state information can be at least one in the spectral occupancy in slight area, community user number, the network capacity of business, idling-resource rate, the corresponding capacity of reserved resource.Small cell Node is connected with load balancing apparatus by Xn mouthfuls, and load state information is sent to load balancing apparatus.All small cell Nodes in small cell cluster all need to send load state information to load balancing apparatus.

Step S1002, small cell Node receives the handover request that macro base station is sent, and the handover request is load state information and the load condition generation of macro base station for the small cell cluster that macro base station is sent according to load balancing apparatus.

Specifically, the method shown in the present embodiment is used for when macro base station is overload, and the load condition of small cell cluster is uses in the case of underloading, the small cell Node in the present embodiment is the small cell Node of underloading.Small cell Node is sent after load state information to load balancing apparatus, load balancing apparatus can determine the load condition of small cell cluster by certain mechanism, and reported to macro base station, when macro base station determine the load condition of small cell cluster be underloading and the load condition of macro base station itself be overload when, the user of access can be switched in small cell cluster in the small cell Node of underloading by macro base station.Macro base station can be after judging to need to be switched to user in the cell of underloading, overload is sent to load balancing apparatus to indicate, so that the Physical Cell Identifier of the small cell Node of underloading is sent to macro base station by load balancing apparatus, the user in the range of the underloading cell coverage can be switched in the underloading cell by macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.Now, small cell Node can receive the handover request of macro base station transmission, and certain customers are switched in small cell Node by macro base station request. Step S1003, small cell Node sends handoff response to macro base station, so that the user in the range of cell coverage is switched to small cell Node by macro base station.

Specifically, if small cell Node can access the user of macro base station switching, small cell Node sends handoff response to macro base station, and macro base station receives after handoff response, the user in the range of cell node load is switched in small cell Node.

The present embodiment, by increasing load balancing apparatus in a network, all small cell Nodes in small cell cluster are made all to report load state information to load balancing apparatus, the small cell Node that load balancing apparatus determines to need to be adjusted according to the load state information of all small cell Nodes in the small cell cluster received, so that sending signaling indicates that small cell Node to be adjusted carries out load balancing adjustment.Small cell Node in small cell cluster between macro base station without interacting, and the load balancing of small cell cluster can just be realized by only needing to interact with load balancing apparatus, so as to save the process resource and bandwidth resources of macro base station, allow macro base station to use the resource of saving to carry out other business processings, improve systematic function.

Further, in embodiment illustrated in fig. 10, small cell Node is sent to load balancing apparatus before load state information, in addition to：The load condition solicited message that small cell Node balancing received load device is sent, the load condition solicited message is used to indicate that small cell Node reports load state information.Specifically, small cell Node periodically can send load state information to load balancing apparatus.In addition, small cell Node can also send load state information after the load condition solicited message of load balancing apparatus transmission is received, then to load balancing apparatus.It so can further reduce the influence that each small cell Node reports load state information to cause Internet resources in small cell cluster.

Further, in embodiment illustrated in fig. 10, the load state information that small cell Node is reported to load balancing apparatus includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 11 is the flow chart of load-balancing method embodiment ten provided in an embodiment of the present invention, and the executive agent of the present embodiment is macro base station, and as shown in figure 11, the method for the present embodiment includes：

Step S1101, the load state information for the small cell cluster that macro base station balancing received load device is sent, the load state information of small cell cluster receives what is sent after the load state information that the small cell Node in small cell cluster is sent for load balancing apparatus.

Specifically, in the present embodiment, load balancing apparatus is disposed in a network, and load balancing apparatus can be an independent network node, be only completed load balance process；Or load balancing apparatus can also be arranged in the small cell Node of any of small cell cluster, i.e., the small cell Node of any one in small cell cluster is used The load balance process of small cell cluster where it is completed.Load balancing apparatus is received after the load state information that each small cell Node is sent in small cell cluster, and the load condition of small cell cluster can be obtained by assessing.What the load condition of small cell cluster was represented is the loading condition of whole small cell cluster, load balancing apparatus can assess the load condition for obtaining small cell cluster by a variety of methods, such as load balancing apparatus can calculate the average load status information of all small cell Nodes in the small cell Node of cluster, according to the overloading threshold of default small cell cluster and the load condition of the small cell cluster of underloading threshold decision；Or load balancing apparatus can judge the load condition of small cell cluster according to the quantity of the small cell Node of overload or the small cell Node of underloading.The load state information for the small cell cluster that macro base station balancing received load device is sent, so as to determine load balance process strategy according to the load condition of the load condition of macro base station and small cell cluster.The load state information for the small cell cluster that macro base station is sent by Xm mouthfuls of balancing received load devices.

Step S1102, macro base station generates load balancing indication signaling according to the load state information of small cell cluster and the load condition of macro base station.

Specifically, macro base station generates load balancing indication signaling according to the load condition of the load condition and macro base station itself of small cell cluster, and the load condition indication signaling is used to make the small cell Node overloaded in small cell cluster reduce load.The present embodiment is situation about overloading for the load condition of small cell cluster, in this case there are two kinds of processing methods again, when the load condition of macro base station is underloading, the user that the load balancing indication signaling of macro base station generation is used for the small cell Node access that will be overloaded in small cell cluster is switched in macro base station；When the load condition of macro base station is also overload, the user that the load balancing indication signaling of macro base station generation is used for the small cell Node access that will be overloaded in small cell cluster is switched in the underloading macro base station adjacent with macro base station.

Step S1103, macro base station is to load balancing apparatus transmission load balancing indication signaling, so that load balancing apparatus determines to indicate that small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

Specifically, macro base station is by Xm mouthfuls to load balancing apparatus transmission load balancing indication signaling, instruction in the load balancing indication signaling that load balancing apparatus is sent according to macro base station, it is determined that needing the small cell Node being adjusted, and indicates that the small cell Node carries out load balancing adjustment.In the present embodiment, the load balancing indication signaling that macro base station is sent to load balancing apparatus is used to make load balancing apparatus reduce load condition, so that the load balancing of small cell cluster.

The present embodiment, by increasing load balancing apparatus in a network, makes all small cell Nodes in small cell cluster all report load state information to load balancing apparatus, load balancing apparatus is slight according to what is received The load state information of all small cell Nodes determines the load state information of small cell cluster and reported to macro base station in area's cluster, macro base station generates load balancing indication signaling according to the load condition of the load condition and macro base station itself of small cell cluster, and the small cell Node being adjusted by load balancing apparatus to needs is sent, so that small cell Node carries out load balancing adjustment.Small cell Node in small cell cluster between macro base station without interacting, and the load balancing of small cell cluster can just be realized by only needing to interact with load balancing apparatus, so as to save the process resource and bandwidth resources of macro base station, allow macro base station to use the resource of saving to carry out other business processings, improve systematic function.

In embodiment illustrated in fig. 11, step S1102 is divided to for two kinds of different scenes.When the load condition of small cell cluster is overload, when the load condition of macro base station is underloading, the step is divided into two kinds of situations again, first is that load balancing indication signaling includes the Physical Cell Identifier of macro base station, for making load balancing apparatus indicate that covering edge for being switched to macro base station, is needed small cell Node to be adjusted for complete small cell Node by small cell Node to be adjusted in this case；Second is that load balancing indication signaling is used to make load balancing apparatus indicate small cell Node reduction cell own reference signal power to be adjusted, and small cell Node to be adjusted can be complete small cell Node or non-complete small cell Node in this case.When the load condition of small cell cluster is overload, when the load condition of macro base station is also overload, the step is equally divided into two kinds of situations again, first is that load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with macro base station, for making load balancing apparatus indicate that covering edge for being switched to the macro base station adjacent with macro base station, is needed small cell Node to be adjusted for complete small cell Node by small cell Node to be adjusted in this case；Second is that load balancing indication signaling is used to make load balancing apparatus indicate small cell Node reduction cell own reference signal power to be adjusted, and small cell Node to be adjusted can be complete small cell Node or non-complete small cell Node in this case.

Further, in embodiment illustrated in fig. 11, the load state information that small cell Node is reported to load balancing apparatus includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 12 is the flow chart of load-balancing method embodiment 11 provided in an embodiment of the present invention, and the executive agent of the present embodiment is macro base station, and as shown in figure 12, the method for the present embodiment includes：

Step S1201, the load state information for the small cell cluster that macro base station balancing received load device is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in small cell cluster is sent for load balancing apparatus.

Specifically, in the present embodiment, load balancing apparatus is disposed in a network, load balancing apparatus can be with It is an independent network node, is only completed load balance process；Or load balancing apparatus can also be arranged in the small cell Node of any of small cell cluster, i.e., any one small cell Node in small cell cluster is used for the load balance process of small cell cluster where completing it.Load balancing apparatus is received after the load state information that each small cell Node is sent in small cell cluster, and the load condition of small cell cluster can be obtained by assessing.What the load condition of small cell cluster was represented is the loading condition of whole small cell cluster, load balancing apparatus can assess the load condition for obtaining small cell cluster by a variety of methods, such as load balancing apparatus can calculate the average load status information of all small cell Nodes in the small cell Node of cluster, according to the overloading threshold of default small cell cluster and the load condition of the small cell cluster of underloading threshold decision；Or load balancing apparatus can judge the load condition of small cell cluster according to the quantity of the small cell Node of overload or the small cell Node of underloading.The load state information for the small cell cluster that macro base station balancing received load device is sent, so as to determine load balance process strategy according to the load condition of the load condition of macro base station and small cell cluster.The load state information for the small cell cluster that macro base station is sent by Xm mouthfuls of balancing received load devices.

Step S1202, macro base station is according to the load state information of small cell cluster and the load condition generation overload indication signaling of macro base station.

Specifically, the present embodiment is underloading for the load condition of small cell cluster, and the load condition of macro base station is the situation of overload.Now macro base station is according to the load condition of the load condition and macro base station itself of small cell cluster generation overload indication signaling, and the overload indication signaling is used to reduce the load of macro base station.

Step S1203, macro base station sends overload indication signaling to load balancing apparatus, so that load balancing apparatus determines the small cell Node of underloading according to the load state information.

Specifically, macro base station sends overload indication signaling by Xm mouthfuls to load balancing apparatus, and load balancing apparatus knows that macro base station is in after overload, determines the small cell Node of underloading in small cell cluster.

Step S1204, the overload response signaling that macro base station balancing received load device is sent, overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading.

Specifically, the overload response signaling that macro base station balancing received load device passes through Xm mouthfuls of transmissions, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading, so certain customers can just be switched in the small cell Node of the underloading by macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.In addition, in this situation, macro base station needs user being switched in the small cell Node of underloading, this needs the small cell Node of underloading to be complete small cell Node.It can also include being switched to the user of how many ratio into the recommended value with the small cell Node of underloading and the load state information of the small cell Node of underloading can also be included by overloading in response signaling, or in overload response signaling. User in the range of the underloading cell coverage is switched to the small cell Node of the underloading by step S1205, macro base station according to the Physical Cell Identifier of the small cell Node of underloading.

Specifically, macro base station is obtained after the underloading cell Physical Cell Identifier of some, it is possible to which user accessed and in the range of the underloading cell coverage is switched in the small cell Node of the underloading.This reduces the load of macro base station, the purpose of load balancing is realized.

The present embodiment, by increasing load balancing apparatus in a network, all small cell Nodes in small cell cluster are made all to report load state information to load balancing apparatus, load balancing apparatus determines the load state information of small cell cluster according to the load state information of all small cell Nodes in the small cell cluster received and reported to macro base station, macro base station generates load balancing indication signaling according to the load condition of the load condition and macro base station itself of small cell cluster, and the small cell Node being adjusted by load balancing apparatus to needs is sent, so that small cell Node carries out load balancing adjustment.Small cell Node in small cell cluster between macro base station without interacting, and the load balancing of small cell cluster can just be realized by only needing to interact with load balancing apparatus, so as to save the process resource and bandwidth resources of macro base station, allow macro base station to use the resource of saving to carry out other business processings, improve systematic function.

Further, in embodiment illustrated in fig. 12, the load state information that small cell Node is reported to load balancing apparatus includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 13 is the signaling process figure of load-balancing method embodiment 12 provided in an embodiment of the present invention, and as shown in figure 13, the method for the present embodiment includes：

Step S1301, the small cell Node of-cluster, by small cell Node with the interface Xn between load balancing apparatus, the load information of each small cell Node is periodically reported to load balancing apparatus, the load information is by the Radio Resource occupancy situation of each node in objective reaction current network, and the load information can be based on spectral occupancy, community user number, the network capacity based on business, idling-resource rate, the corresponding capacity of reserved resource etc..

Step S1302, the load information that load balancing apparatus is reported according to each small cell Node, and based on the threshold value of the different indexs stored in load balancing apparatus, judge the current loading condition of each node.If the load information that some current small cell Node is reported " overloading threshold " related higher than the same load condition that controller is set, judges the small cell Node for " overload " small cell Node.If the load information that some current small cell Node is reported " underloading threshold value " related less than the same load condition that controller is set, judges the small cell Node for " underloading " small cell Node.Load balancing apparatus is found out current load situation and belonged to The small cell Node ^ of " overload "

Step S1303, load balancing apparatus finds out " underloading " small cell Node j in the adjacent small cell Nodes of " overload " small cell Node k.

Step S1304, if there is such " underloading " small cell Node j, then load balancing apparatus passes through Xn interfaces, the load balancing indication signaling for switching purpose is sent to the small cell Node k of overload, the small cell Node j of target underloading Physical Cell Identifier must be included in the signaling, the small cell Node j of target loading condition can also be sent simultaneously, the user of how many ratio is either switched to the recommended value in the small cell Node j of underloading, the purpose of the Signalling exchange is to allow the small cell Node k of overload that certain customers therein are switched in the small cell Node j of underloading.

Step S1305, small cell Node k is overloaded after the load balancing indication signaling for switching purpose is received, the part edge user below it is selected, handover request is sent to the small cell Node j of underloading, part edge user is switched in the small cell Node j of target by request.

Step S1306, if the small cell Node j of underloading agrees to the user of the small cell Node k switchings of access overload, handover request response is sent to small cell Node k is overloaded.

Step S1307, if after having performed above steps, the loading condition in original " overload " small cell Node k is still heavier, then small cell Node k can be accessed low priority user rate reduction or deletion.

Figure 14 is the signaling process figure of load-balancing method embodiment 13 provided in an embodiment of the present invention, and as shown in figure 14, the method for the present embodiment includes：

Step S1401, the small cell Node of-cluster, by small cell Node with the interface Xn between load balancing apparatus, the load information of each small cell Node is periodically reported to load balancing apparatus, the load information is by the Radio Resource occupancy situation of each node in objective reaction current network, and the load information can be based on spectral occupancy, community user number, the network capacity based on business, idling-resource rate, the corresponding capacity of reserved resource etc..

Step S1402, the load information that load balancing apparatus is reported according to each small cell Node, and based on the threshold value of the different indexs stored in load balancing apparatus, judge the current loading condition of each node.If the load information that some current small cell Node is reported " overloading threshold " related higher than the same load condition that controller is set, judges the small cell Node for " overload " small cell Node.If the load information that some current small cell Node is reported " underloading threshold value " related less than the same load condition that controller is set, judges the small cell Node for " underloading " small cell Node.Load balancing apparatus finds out the small cell Node that current load situation belongs to " overload "！^. Step S1403, load balancing apparatus finds out " underloading " small cell Node j in the adjacent small cell Nodes of " overload " small cell Node k.

Step S1404, if there is such " underloading " small cell Node j, then load balancing apparatus passes through Xn interfaces, to the small cell Node k of overload, and the small cell Node j of underloading sends the load balancing indication signaling for adjusting cell CRS borders purpose, power adjustment comprising 1 bit in load balancing indication signaling is indicated, and CRS power adjustments.For overloading small cell Node k, power adjustment is designated as negative sense adjustment, that is, reduces CRS transmission powers；For the small cell Node j of underloading, power adjustment is designated as positive adjustment, that is, increases CRS transmission powers.

Step S1405, overloaded cells node k reduce CRS transmission powers, so as to carry out the border coordination of small cell Node after the load balancing indication signaling for adjusting cell CRS borders purpose is received according to the instruction of load balancing apparatus.

Step S1406, light load cell node j increase CRS transmission powers, so as to carry out the border coordination of small cell Node after the load balancing indication signaling for adjusting cell CRS borders purpose is received according to the instruction of load balancing apparatus.

Step S1407, if after having performed above steps, the loading condition in original " overload " small cell Node k is still heavier, then small cell Node k can be accessed low priority user rate reduction or deletion.

Further, in Figure 13 in step S1301 or Figure 14 before step S1401, step can also be included：Load balancing apparatus sends load condition solicited message to the cluster cell below it.Small cell Node in small cell cluster reports load state information after the load condition solicited message of load balancing apparatus transmission is received, then to load balancing apparatus.

Figure 15 is the signaling process figure of load-balancing method embodiment 14 provided in an embodiment of the present invention, and as shown in figure 15, the method for the present embodiment includes：

Step S1501, the small cell Node of-cluster, by small cell Node with the interface Xn between load balancing apparatus, the load information of each small cell Node is periodically reported to load balancing apparatus, the load information is by the Radio Resource occupancy situation of each node in objective reaction current network, and the load information can be based on spectral occupancy, community user number, the network capacity based on business, idling-resource rate, the corresponding capacity of reserved resource etc..

Step S1502, the load information that load balancing apparatus is reported according to each small cell Node assesses the average load situation in the whole slight area's node of this cluster, and by load balancing apparatus controller and Xm interfaces between macro base station, macro base station is periodically reported by the load condition of the slight area's node of this cluster.

Step S1503, macro base station decides whether the load balancing for participating in coordinating the slight area's node of certain cluster according to the loading condition of itself.Assuming that：Macro base station n is to be in underloading situation, and the slight area's node of this cluster is generally in overload, then macro base station passes through Xm interfaces, it will indicate to be sent to load balancing apparatus for the load balancing of switching, the load balancing indicates to include the Physical Cell Identifier of target macro base station, the portfolio size that macro base station can be shared for the slight area's node of this cluster, or user's ratio etc. can also be sent simultaneously.

Step S1504, load balancing apparatus is indicated according to the message of macro base station, and based on the threshold value of the different indexs stored in load balancing apparatus, judges the current loading condition of each node.If the load information that some current small cell Node is reported " overloading threshold " related higher than the same load condition that load balancing apparatus is set, judges the small cell Node for " overload " small cell Node.

Step S1505, load balancing apparatus passes through Xn interfaces, the load balancing indication signaling for switching purpose is sent to the small cell Node k of overload, target macro base station n Physical Cell Identifier must be included in the signaling, the user of how many ratio is either switched to the recommended value in underloading macro base station n, the purpose of the Signalling exchange is to allow the small cell Node k of overload that certain customers therein are switched in underloading macro base station n.

Step S1506, overloads small cell Node k after the load balancing indication signaling for switching purpose is received, selects the part edge user below it, and handover request is sent to light macro base station n, and part edge user is switched in macro base station n by request.

Step S1507, if macro base station n agrees to the user of the small cell Node k switchings of access overload, handover request response is sent to small cell Node k is overloaded.

Step S1508, if after having performed above steps, the loading condition in original " overload " small cell Node k is still heavier, then small cell Node k can be accessed low priority user rate reduction or deletion.

Figure 16 is the signaling process figure of load-balancing method embodiment 15 provided in an embodiment of the present invention, and as shown in figure 16, the method for the present embodiment includes：

Step S1601, the small cell Node of-cluster, by small cell Node with the interface Xn between load balancing apparatus, the load information of each small cell Node is periodically reported to load balancing apparatus, the load information is by the Radio Resource occupancy situation of each node in objective reaction current network, and the load information can be with Based on spectral occupancy, community user number, the network capacity based on business, idling-resource rate, the corresponding capacity of reserved resource etc..

Step S1602, the load information that load balancing apparatus is reported according to each small cell Node, assess the average load situation in the slight area's node of this whole cluster, and by the Xm interfaces between load balancing apparatus controller and macro base station, the load condition of the slight area's node of this cluster is periodically reported into macro base station.

Step S1603, macro base station decides whether the load balancing for participating in coordinating the slight area's node of certain cluster according to the loading condition of itself.Assuming that：Macrocell n is to be in underloading situation, and the slight area's node of this cluster is generally in overload, then macro base station passes through Xm interfaces, the load balancing consulted for border is indicated to be sent to load balancing apparatus, the load balancing is indicated for making the small cell Node k of overload reduce CRS transmission powers.

Step S1604, load balancing apparatus is indicated according to the message of macro base station, and based on the threshold value of the different indexs stored in load balancing apparatus, judges the current loading condition of each node.If the load information that some current small cell Node is reported " overloading threshold " related higher than the same load condition that load balancing apparatus is set, judges the small cell Node for " overload " small cell Node.

Step S1605, load balancing apparatus is sent the power adjustment comprising 1 bit in the load balancing indication signaling consulted for border, load balancing indication signaling to the small cell Node k of overload and indicated by Xn interfaces, and CRS power adjustments, or power adjustment step size.For overloaded cells k, power adjustment is designated as negative sense adjustment, that is, reduces CRS transmission powers.

Step S1606, overloaded cells k then accordingly carry out the power adjustment of oneself, reduce the coverage of oneself reference signal after the load balancing indication signaling consulted for border is received.

Step S1607, if after having performed above steps, the loading condition in original " overload " small cell Node k is still heavier, then small cell Node k can be accessed low priority user rate reduction or deletion.

Further, in embodiment illustrated in fig. 16, step S1603 can also be：Macro base station decides whether the load balancing for participating in coordinating the slight area's node of certain cluster according to the loading condition of itself, but by the Signalling exchange of X2 before, macro base station _ _ macro base station q adjacent macro base station n is to be in light condition.Then macro base station indicates the load balancing consulted for border to be sent to load balancing apparatus, the load balancing is indicated for making the small cell Node k of overload reduce CRS transmission powers by Xm interfaces. Figure 17 is the signaling process figure of load-balancing method embodiment 16 provided in an embodiment of the present invention, and as shown in figure 17, the method for the present embodiment includes：

Step S1701, the small cell Node of-cluster, by small cell Node with the interface Xn between load balancing apparatus, the load information of each small cell Node is periodically reported to load balancing apparatus, the load information is by the Radio Resource occupancy situation of each node in objective reaction current network, and the load information can be based on spectral occupancy, community user number, the network capacity based on business, idling-resource rate, the corresponding capacity of reserved resource etc..

Step S1702, the load information that load balancing apparatus is reported according to each small cell Node, assess the average load situation in the slight area's node of this whole cluster, and by the Xm interfaces between load balancing apparatus controller and macro base station, the load condition of the slight area's node of this cluster is periodically reported into macro base station.

Step S1703, macro base station decides whether the load balancing for participating in coordinating the slight area's node of certain cluster according to the loading condition of itself.Assuming that：Macro base station n oneself is also in overload conditions, and the slight area of this cluster is generally in overload, but pass through the Signalling exchange of X2 before, macro base station adjacent macro base station n --- macro base station q is to be in light condition, then macro base station n passes through Xm interfaces, it will indicate to be sent to load balancing apparatus for the load balancing of switching, the Physical Cell Identifier of target macro base station during the load balancing is indicated（Macrocell q), while the portfolio size that macro base station q can share for the slight area's node of this cluster can also be sent, or user's ratio etc..

Step S1704, load balancing apparatus is indicated according to the message of macro base station, and based on the threshold value of the different indexs stored in load balancing apparatus, judges the current loading condition of each node.If the load information that some current small cell Node is reported " overloading threshold " related higher than the same load condition that load balancing apparatus is set, judges the small cell Node for " overload " small cell Node.

Step S1705, load balancing apparatus passes through Xn interfaces, the load balancing indication signaling for switching purpose is sent to the small cell Node k of overload, target macro base station q Physical Cell Identifier must be included in the signaling, the user of how many ratio is either switched to the recommended value in underloading macro base station q, the purpose of the Signalling exchange is to allow the small cell Node k of overload that certain customers therein are switched in underloading macro base station q.

Step S1706, overloads small cell Node k after the load balancing indication signaling for switching purpose is received, selects the part edge user below it, and handover request is sent to light macro base station q, and part edge user is switched in macro base station q by request. Step S1707, if macro base station q agrees to the user of the small cell Node k switchings of access overload, handover request response is sent to small cell Node k is overloaded.Step S1708, if after having performed above steps, the loading condition in original " overload " small cell Node k is still heavier, then small cell Node k can be accessed low priority user rate reduction or deletion.

Figure 18 is the signaling process figure of load-balancing method embodiment 17 provided in an embodiment of the present invention, and as shown in figure 18, the method for the present embodiment includes：

Step S1801, the small cell Node of-cluster, by small cell Node with the interface Xn between load balancing apparatus, the load information of each small cell Node is periodically reported to load balancing apparatus, the load information is by the Radio Resource occupancy situation of each node in objective reaction current network, and the load information can be based on spectral occupancy, community user number, the network capacity based on business, idling-resource rate, the corresponding capacity of reserved resource etc..

Step S1802, the load information that load balancing apparatus is reported according to each small cell Node, assess the average load situation in the slight area's node of this whole cluster, and by the Xm interfaces between load balancing apparatus controller and macro base station, the load condition of the slight area's node of this cluster is periodically reported into macro base station.

Step S1803, macro base station decides whether the load balancing for participating in coordinating the slight area's node of certain cluster according to the loading condition of itself.Assuming that：Macro base station n is to be in overload conditions, and the slight area's node of this cluster is generally in light condition, then overload indication signaling is sent to load balancing apparatus by macro base station by Xm interfaces, and the overload indicates to include the Physical Cell Identifier of target macro base station.

Step S1804, load balancing apparatus is indicated according to the message of macro base station, and based on the threshold value of the different indexs stored in load balancing apparatus, judges the current loading condition of each node.If the load information that some current small cell Node is reported " underloading threshold value " related less than the same load condition that load balancing apparatus is set, judges the small cell Node for " underloading " small cell Node.

Step S1805, load balancing apparatus sends overload response signaling by Xm interfaces to macro base station, and the signaling includes the small cell Node j of underloading Physical Cell Identifier.

Step S1806, macro base station is received after the overload response message of load balancing apparatus transmission, according to the small cell Node j of underloading Physical Cell Identifier, selects the part edge user below it, small to underloading Cell Node j sends handover request, and the certain customers in the small cell Node j coverages of underloading are switched in the small cell Node j of underloading by request.

Step S1807, if the small cell Node j of underloading agrees to the user of access macro base station switching, handover request response is sent to macro base station.

Step S1808, if after having performed above steps, the loading condition in former macro base station is still heavier, then macro base station can be accessed low priority user rate reduction or deletion.

Figure 19 is the structural representation of load balancing apparatus embodiment one provided in an embodiment of the present invention, and as shown in figure 19, the load balancing apparatus of the present embodiment includes：

Receiving module 191, the load state information for receiving the transmission of the small cell Node in the small cell cluster.

Processing module 192, for determining small cell Node to be adjusted according to the load state information.Sending module 193, for the small cell Node transmission load balancing indication signaling to be adjusted, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

The load balancing apparatus of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Fig. 2, and its implementing principle and technical effect is similar, and here is omitted.

Further, in embodiment illustrated in fig. 19, the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or, the small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that the small cell Node of the underloading improves cell own reference signal power.

Further, in embodiment illustrated in fig. 19, processing module 192 is additionally operable to determine the load condition of the small cell cluster according to the load state information；Sending module 193, is additionally operable to the load state information of the small cell cluster being sent to the macro base station, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；Receiving module 191, is additionally operable to receive the load balancing indication signaling that the macro base station is sent.

Further, in embodiment illustrated in fig. 19, the load balancing indication signaling includes the grand base The Physical Cell Identifier stood, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

Further, in embodiment illustrated in fig. 19, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

Further, in embodiment illustrated in fig. 19, the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

Further, in embodiment illustrated in fig. 19, receiving module 191 is additionally operable to receive the overload messages that the small cell Node of overload is sent；Sending module 193, it is additionally operable to send overload indication signaling to the small cell Node of overload, the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

Further, in embodiment illustrated in fig. 19, sending module 193, is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in embodiment illustrated in fig. 19, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

In another implementation of embodiment illustrated in fig. 19, receiving module 191, the load state information for receiving the transmission of the small cell Node in the small cell cluster；Processing module 192, the load condition for determining the small cell cluster according to the load state information；Sending module 193, for the load state information of the small cell cluster to be sent into the macro base station, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；Receiving module 191, is additionally operable to receive the overload indication signaling that the macro base station is sent；Processing module 192, is additionally operable to determine the small cell Node of underloading according to the load state information；Sending module 193, it is additionally operable to send overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.The load balancing apparatus of this implementation is used for the technical scheme for realizing embodiment of the method shown in Fig. 6, and its implementing principle and technical effect is similar, and here is omitted.

Further, in above-mentioned implementation, sending module 193 is additionally operable into the small cell cluster Small cell Node send load condition solicited message, the load condition solicited message be used for indicate that the small cell Node reports the load state information.

Further, in above-mentioned implementation, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 20 is the structural representation of cell node embodiment one provided in an embodiment of the present invention, and as shown in figure 20, the small cell Node of the present embodiment includes：

Sending module 201, for sending load state information to the load balancing apparatus.

Receiving module 202, for receiving the load balancing indication signaling that the load balancing apparatus is sent, the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information.

Adjustment of load module 203, for carrying out load balancing adjustment according to the load balancing signaling.The small cell Node of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Fig. 7, and its implementing principle and technical effect is similar, and here is omitted.

Further, in embodiment illustrated in fig. 20, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the user in the cell coverage edge is switched to the small cell Node of the underloading by adjustment of load module 203 specifically for the Physical Cell Identifier according to the small cell Node of the underloading；Or, the load balancing indication signaling is used to indicate that adjustment of load module 203 reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by adjustment of load module 203 specifically for the Physical Cell Identifier according to the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and adjustment of load module 203 by the user in the cell coverage edge according to the Physical Cell Identifier of the macro base station adjacent with the macro base station specifically for being switched to the macro base station adjacent with the macro base station.

Further, in embodiment illustrated in fig. 20, the small cell Node is the small cell Node of underloading, and the load balancing indication signaling is used to indicate that adjustment of load module 203 improves cell own reference signal power.

Further, in embodiment illustrated in fig. 20, sending module 201 is additionally operable to send overload messages to the load balancing apparatus；Receiving module 202, is additionally operable to receive the overload indication signaling that the load balancing apparatus is sent；Adjustment of load module 203, is additionally operable to the user less than pre-set priority of reduction access Speed or delete the user for being less than pre-set priority.

Further, in embodiment illustrated in fig. 20, receiving module 202 is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in embodiment illustrated in fig. 20, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 21 is the structural representation of cell node embodiment two provided in an embodiment of the present invention, and as shown in figure 21, the small cell Node of the present embodiment includes：

Sending module 211, for sending load state information to the load balancing apparatus.

Receiving module 212, for receiving the handover request that the macro base station is sent, the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus.

Sending module 211, is additionally operable to send handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

The small cell Node of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Fig. 9, and its implementing principle and technical effect is similar, and here is omitted.

Further, in embodiment illustrated in fig. 21, receiving module 212 is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in embodiment illustrated in fig. 21, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 22 is the structural representation of macro base station embodiment one provided in an embodiment of the present invention, and as shown in figure 22, the macro base station of the present embodiment includes：

Receiving module 221, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus.

Processing module 222, the load condition for the load state information according to the small cell cluster and the macro base station generates load balancing indication signaling. Sending module 223, for sending the load balancing indication signaling to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

The macro base station of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Figure 11, and its implementing principle and technical effect is similar, and here is omitted.

Further, in embodiment illustrated in fig. 22, the load condition of the macro base station is underloading；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or, the load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

Further, in embodiment illustrated in fig. 22, the load condition of the macro base station is overload；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or, the load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

Further, in embodiment illustrated in fig. 22, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 23 is the structural representation of macro base station embodiment two provided in an embodiment of the present invention, and as shown in figure 23, the macro base station of the present embodiment includes：

Receiving module 231, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus.

Processing module 232, the load condition generation overload indication signaling for the load state information according to the small cell cluster and the macro base station.

Sending module 233, for sending the overload indication signaling to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information.

Receiving module 231, is additionally operable to receive the overload response signaling that the load balancing apparatus is sent, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading.

Handover module 234, institute will be in for the Physical Cell Identifier according to the small cell Node of the underloading State the user in the range of underloading cell coverage and be switched to the small cell Node of the underloading.The macro base station of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Figure 12, and its implementing principle and technical effect is similar, and here is omitted.

Further, in embodiment illustrated in fig. 23, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 24 is the hardware architecture diagram of load balancing apparatus embodiment two provided in an embodiment of the present invention, and as shown in figure 24, the load balancing apparatus of the present embodiment includes：Receiver 241, processor 242, transmitter 243.Optionally, the load balancing apparatus can also include memory 244.Wherein, receiver 241, processor 242, transmitter 243 can be connected with memory 234 by system bus or other modes, in Figure 24 so that system bus is connected as an example；System bus can be isa bus, PCI buses or eisa bus etc..The system bus can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 24 with a line, it is not intended that only one bus or a type of bus.

Receiver 241, the load state information for receiving the transmission of the small cell Node in the small cell cluster；

Processor 242, the load state information for being received according to receiver 241 determines small cell Node to be adjusted；

Transmitter 243, for the small cell Node transmission load balancing indication signaling to be adjusted determined to processor 242, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

Further, in embodiment illustrated in fig. 24, the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or, the small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that the underloading is small Cell Node improves cell own reference signal power.

Further, in embodiment illustrated in fig. 24, processor 242 is additionally operable to determine the load condition of the small cell cluster according to the load state information that the receiver 241 is received；Transmitter 243, the load state information of small cell cluster for being additionally operable to determine processor 242 is sent to the macro base station, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；Receiver 241, is additionally operable to receive the load balancing indication signaling that the macro base station is sent.

Further, in embodiment illustrated in fig. 24, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

Further, in embodiment illustrated in fig. 24, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

Further, in embodiment illustrated in fig. 24, the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

Further, in embodiment illustrated in fig. 24, receiver 241 is additionally operable to receive the overload messages that the small cell Node of overload is sent；Transmitter 243, the overload indication signaling received to the small cell Node transmitter-receiver 241 of overload is additionally operable to, the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

Further, in embodiment illustrated in fig. 24, transmitter 243, is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in embodiment illustrated in fig. 24, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

The hardware architecture diagram of macro base station embodiment three provided in an embodiment of the present invention is as shown in figure 24, wherein：

Receiver 241, the load condition letter for receiving the transmission of the small cell Node in the small cell cluster Processor 242, the load state information for being received according to receiver 241 determines the load condition of the small cell cluster；

Transmitter 243, the load state information of the small cell cluster for processor 242 to be determined is sent to the macro base station, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

Receiver 241, is additionally operable to receive the overload indication signaling that the macro base station is sent；Processor 242, is additionally operable to determine the small cell Node of underloading according to the load state information that receiver 241 is received；

Transmitter 243, it is additionally operable to send overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

The load balancing apparatus of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Fig. 6, and its implementing principle and technical effect is similar, and here is omitted.

Further, in load balancing apparatus illustrated embodiment three, transmitter 243, is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in load balancing apparatus illustrated embodiment three, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 25 is the hardware architecture diagram of cell node embodiment three provided in an embodiment of the present invention, and as shown in figure 25, the small cell Node of the present embodiment includes：Transmitter 251, receiver 252, processor 253.Optionally, the small cell Node can also include memory 254.Wherein, transmitter 251, receiver 252, processor 253 can be connected with memory 254 by system bus or other modes, in Figure 25 so that system bus is connected as an example；System bus can be isa bus, pci bus or eisa bus etc..The system bus can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 25 with a line, it is not intended that only one bus or a type of bus.

Transmitter 251, for sending load state information to the load balancing apparatus；

Receiver 252, for receiving the load balancing indication signaling that the load balancing apparatus is sent, institute State what load balancing indication signaling determined for the load balancing apparatus according to the load state information；Processor 253, the load balancing signaling for being received according to receiver 252 carries out load balancing adjustment.

The small cell Node of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Fig. 7, and its implementing principle and technical effect is similar, and here is omitted.

Further, in embodiment illustrated in fig. 25, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the user in the cell coverage edge is switched to the small cell Node of the underloading by processor 253 specifically for the Physical Cell Identifier according to the small cell Node of the underloading；Or, the load balancing indication signaling is used to indicate that processor 253 reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by processor 253 specifically for the Physical Cell Identifier according to the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and processor 253 by the user in the cell coverage edge according to the Physical Cell Identifier of the macro base station adjacent with the macro base station specifically for being switched to the macro base station adjacent with the macro base station.

Further, in embodiment illustrated in fig. 25, the small cell Node is the small cell Node of underloading, and the load balancing indication signaling is used to indicate that processor 253 improves cell own reference signal power.

Further, in embodiment illustrated in fig. 25, transmitter 251 is additionally operable to send overload messages to the load balancing apparatus；Receiver 252, is additionally operable to receive the overload indication signaling that the load balancing apparatus is sent；Processor 253, is additionally operable to the speed of the user less than pre-set priority of reduction access or deletes the user for being less than pre-set priority.

Further, in embodiment illustrated in fig. 25, receiver 252 is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in embodiment illustrated in fig. 25, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

The hardware architecture diagram of cell node embodiment four provided in an embodiment of the present invention as shown in Figure 25, wherein： Transmitter 251, for sending load state information to the load balancing apparatus；Receiver 252, for receiving the handover request that the macro base station is sent, the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus；

Transmitter 251, is additionally operable to send handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

Further, in small cell Node illustrated embodiment four, receiver 252, is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

Further, in small cell Node illustrated embodiment four, the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

Figure 26 is the hardware architecture diagram of macro base station embodiment three provided in an embodiment of the present invention, and as shown in figure 26, the macro base station of the present embodiment includes：Receiver 261, processor 262, transmitter 263.Optionally, the macro base station can also include memory 264.Wherein, receiver 261, processor 262, transmitter 263 can be connected with memory 264 by system bus or other modes, in Figure 26 so that system bus is connected as an example；System bus can be isa bus, pci bus or eisa bus etc..The system bus can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 26 with a line, it is not intended that only one bus or a type of bus.

Receiver 261, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

Processor 262, the load state information of small cell cluster and the load condition of the macro base station for being received according to receiver 261 generate load balancing indication signaling；

Transmitter 263, for sending the load balancing indication signaling that processor 262 is generated to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

The macro base station of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Figure 11, in fact Existing principle is similar with technique effect, and here is omitted.

Further, in embodiment illustrated in fig. 26, the load condition of the macro base station is underloading；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or, the load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

Further, in embodiment illustrated in fig. 25, the load condition of the macro base station is overload；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or, the load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

The hardware architecture diagram of macro base station example IV provided in an embodiment of the present invention is as shown in figure 26, wherein：

Processor 262, indication signaling is overloaded for the load state information of small cell cluster received according to receiver 261 and the load condition generation of the macro base station；

Transmitter 263, for sending the overload indication signaling that processor 262 is generated to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；Receiver 261, is additionally operable to receive the overload response signaling that the load balancing apparatus is sent, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

Processor 262, is additionally operable to that the user in the range of the underloading cell coverage is switched into the small cell Node of the underloading according to the Physical Cell Identifier of the small cell Node of the underloading.

The macro base station of the present embodiment is used for the technical scheme for realizing embodiment of the method shown in Figure 12, and its implementing principle and technical effect is similar, and here is omitted.

Further, in macro base station illustrated embodiment four, the load state information includes：Frequency spectrum is accounted for With at least one in rate, community user number, the network capacity of business, idling-resource rate, the corresponding capacity of reserved resource.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic.Therefore, protection scope of the present invention should be defined by scope of the claims.

Claims

Claims

1st, a kind of load-balancing method, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and methods described includes：The load balancing apparatus receives the load state information that the small cell Node in the small cell cluster is sent；

The load balancing apparatus determines small cell Node to be adjusted according to the load state information；The load balancing apparatus is to the small cell Node transmission load balancing indication signaling to be adjusted, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

2nd, according to the method described in claim 1, it is characterised in that the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or,

The small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that the small cell Node of the underloading improves cell own reference signal power.

3rd, method according to claim 2, it is characterised in that the load balancing apparatus is received after the load state information that the small cell Node in the small cell cluster is sent, in addition to：

The load balancing apparatus determines the load condition of the small cell cluster according to the load state information；

The load state information of the small cell cluster is sent to the macro base station by the load balancing apparatus, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The load balancing apparatus receives the load balancing indication signaling that the macro base station is sent.

4th, method according to claim 3, it is characterized in that, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station. 5th, method according to claim 3, it is characterized in that, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

6th, method according to claim 3, it is characterised in that the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

7th, the method according to any one of claim 26, it is characterised in that the load balancing apparatus to after the small cell Node transmission load balancing indication signaling to be adjusted, in addition to：

The load balancing apparatus receives the overload messages that the small cell Node of overload is sent；

The load balancing apparatus sends overload indication signaling to the small cell Node of overload, and the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

8th, the method according to any one of claim 17, it is characterised in that the load balancing apparatus is received before the load state information that the small cell Node in the small cell cluster is sent, in addition to：Small cell Node of the load balancing apparatus into the small cell cluster sends load condition solicited message, and the load condition solicited message is used to indicate that the small cell Node reports the load state information.

9th, the method according to any one of claim 18, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

10th, a kind of load-balancing method, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and methods described includes：The load balancing apparatus receives the load state information that the small cell Node in the small cell cluster is sent；

The load balancing apparatus determines the load condition of the small cell cluster according to the load state information；

The load state information of the small cell cluster is sent to the macro base station by the load balancing apparatus, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The load balancing apparatus receives the overload indication signaling that the macro base station is sent；

The load balancing apparatus determines the small cell Node of underloading according to the load state information； The load balancing apparatus sends overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

11st, method according to claim 10, it is characterised in that the load balancing apparatus is received before the load state information that the small cell Node in the small cell cluster is sent, in addition to：

Small cell Node of the load balancing apparatus into the small cell cluster sends load condition solicited message, and the load condition solicited message is used to indicate that the small cell Node reports the load state information.

12nd, the method according to claim 10 or 11, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

13rd, a kind of load-balancing method, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and methods described includes：The small cell Node sends load state information to the load balancing apparatus；

The small cell Node receives the load balancing indication signaling that the load balancing apparatus is sent, and the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information；

The small cell Node carries out load balancing adjustment according to the load balancing signaling.

14th, method according to claim 13, it is characterized in that, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the user in the cell coverage edge is switched to the small cell Node of the underloading by the small cell Node according to the Physical Cell Identifier of the small cell Node of the underloading；Or, the load balancing indication signaling is used to indicate that the small cell Node reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by the small cell Node according to the Physical Cell Identifier of the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and the user in the cell coverage edge is switched to the macro base station adjacent with the macro base station by the small cell Node according to the Physical Cell Identifier of the macro base station adjacent with the macro base station.

15th, method according to claim 13, it is characterised in that the small cell Node is the small cell Node of underloading, the load balancing indication signaling is used to indicate that the small cell Node improves cell own reference signal power. 16th, the method according to claims 14 or 15, it is characterised in that the small cell Node is carried out according to the load balancing signaling after load balancing adjustment, in addition to：

The small cell Node sends overload messages to the load balancing apparatus；

The small cell Node receives the overload indication signaling that the load balancing apparatus is sent；

The speed of the user less than pre-set priority of the small cell Node reduction access deletes the user for being less than pre-set priority.

17th, the method according to any one of claim 13 16, it is characterised in that the small cell Node is sent to the load balancing apparatus before load state information, in addition to：

The small cell Node receives the load condition solicited message that the load balancing apparatus is sent, and the load condition solicited message is used to indicate that the small cell Node reports the load state information.

18th, the method according to any one of claim 13 17, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

19th, a kind of load-balancing method, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and methods described includes：The small cell Node sends load state information to the load balancing apparatus；

The small cell Node receives the handover request that the macro base station is sent, and the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus；

The small cell Node sends handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

20th, method according to claim 19, it is characterised in that the small cell Node is sent to the load balancing apparatus before load state information, in addition to：

The small cell Node receives the load condition solicited message that the load balancing apparatus is sent, and the load condition solicited message is used to indicate that the small cell Node reports the load state information.

21st, the method according to claim 19 or 20, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

22nd, a kind of load-balancing method, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and methods described includes： The macro base station receives the load state information for the small cell cluster that the load balancing apparatus is sent, and the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

The macro base station generates load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The macro base station sends the load balancing indication signaling to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

23rd, method according to claim 22, it is characterised in that the load condition of the macro base station is underloading；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

24th, method according to claim 22, it is characterised in that the load condition of the macro base station is overload；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

25th, the method according to any one of claim 22 24, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

26th, a kind of load-balancing method, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and methods described includes：The macro base station receives the load state information for the small cell cluster that the load balancing apparatus is sent, and the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

The macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station； The macro base station sends the overload indication signaling to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；

The macro base station receives the overload response signaling that the load balancing apparatus is sent, and the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

User in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

27th, method according to claim 26, it is characterised in that the load state information includes:At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

28th, a kind of load balancing apparatus, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiving module, the load state information for receiving the transmission of the small cell Node in the small cell cluster;Processing module, for determining small cell Node to be adjusted according to the load state information；Sending module, for the small cell Node transmission load balancing indication signaling to be adjusted, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

29th, load balancing apparatus according to claim 28, it is characterised in that the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or,

The small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that the small cell Node of the underloading improves cell own reference signal power.

30th, load balancing apparatus according to claim 29, it is characterised in that the processing module, is additionally operable to determine the load condition of the small cell cluster according to the load state information；

The sending module, is additionally operable to the load state information of the small cell cluster being sent to the macro base station, so that the macro base station is according to the load state information of the small cell cluster and the load of the macro base station State generates the load balancing indication signaling；

The receiving module, is additionally operable to receive the load balancing indication signaling that the macro base station is sent.

31st, load balancing apparatus according to claim 30, it is characterized in that, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

32nd, load balancing apparatus according to claim 30, it is characterized in that, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

33rd, load balancing apparatus according to claim 30, it is characterised in that the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

34th, the load balancing apparatus according to any one of claim 29 33, it is characterised in that the receiving module, is additionally operable to receive the overload messages that the small cell Node of overload is sent；

The sending module, it is additionally operable to send overload indication signaling to the small cell Node of overload, the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

35th, the load balancing apparatus according to any one of claim 28 34, it is characterized in that, the sending module, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

36th, the method according to any one of claim 28 35, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

37th, a kind of load balancing apparatus, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiving module, the load state information for receiving the transmission of the small cell Node in the small cell cluster;Processing module, the load condition for determining the small cell cluster according to the load state information；Sending module, for the load state information of the small cell cluster to be sent into the macro base station, with Make the macro base station according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The receiving module, is additionally operable to receive the overload indication signaling that the macro base station is sent；The processing module, is additionally operable to determine the small cell Node of underloading according to the load state information；The sending module, it is additionally operable to send overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

38th, the load balancing apparatus according to claim 37, it is characterized in that, the sending module, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

39th, the load balancing apparatus according to claim 37 or 38, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

40th, a kind of small cell Node, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the small cell Node includes：

Sending module, for sending load state information to the load balancing apparatus；

Receiving module, for receiving the load balancing indication signaling that the load balancing apparatus is sent, the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information；

Adjustment of load module, for carrying out load balancing adjustment according to the load balancing signaling.

41st, small cell Node according to claim 40, it is characterized in that, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and the user in the cell coverage edge is switched to the small cell Node of the underloading by the adjustment of load module specifically for the Physical Cell Identifier according to the small cell Node of the underloading；Or, the load balancing indication signaling is used to indicate that the adjustment of load module reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by the adjustment of load module specifically for the Physical Cell Identifier according to the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and the adjustment of load module is specifically for according to the grand base adjacent with the macro base station User in the cell coverage edge is switched to the macro base station adjacent with the macro base station by the Physical Cell Identifier stood.

42nd, small cell Node according to claim 40, it is characterised in that the small cell Node is the small cell Node of underloading, the load balancing indication signaling is used to indicate that the adjustment of load module improves cell own reference signal power.

43rd, the small cell Node according to claim 41 or 42, it is characterised in that the sending module, is additionally operable to send overload messages to the load balancing apparatus；

The receiving module, is additionally operable to receive the overload indication signaling that the load balancing apparatus is sent；The adjustment of load module, is additionally operable to the speed of the user less than pre-set priority of reduction access or deletes the user for being less than pre-set priority.

44th, the small cell Node according to any one of claim 40 43, it is characterized in that, the receiving module, it is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

45th, the small cell Node according to any one of claim 40 44, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

46th, a kind of small cell Node, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the small cell Node includes：

Sending module, for sending load state information to the load balancing apparatus；

Receiving module, for receiving the handover request that the macro base station is sent, the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus；

The sending module, is additionally operable to send handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station.

47th, small cell Node according to claim 46, it is characterized in that, the receiving module, is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

48th, the small cell Node according to claim 46 or 47, it is characterised in that the load state information includes：Spectral occupancy, community user number, the network capacity of business, idling-resource rate, Reserve at least one in the corresponding capacity of resource.

49th, a kind of macro base station, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Receiving module, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

Processing module, the load condition for the load state information according to the small cell cluster and the macro base station generates load balancing indication signaling；

Sending module, for sending the load balancing indication signaling to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

50th, macro base station according to claim 49, it is characterised in that the load condition of the macro base station is underloading；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

51st, macro base station according to claim 49, it is characterised in that the load condition of the macro base station is overload；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

52nd, the macro base station according to any one of claim 49 51, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

53rd, a kind of macro base station, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Receiving module, the load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives the cell for the load balancing apparatus Sent after the load state information that small cell Node in cluster is sent；

Processing module, the load condition generation overload indication signaling for the load state information according to the small cell cluster and the macro base station；

Sending module, for sending the overload indication signaling to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；

The receiving module, is additionally operable to receive the overload response signaling that the load balancing apparatus is sent, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

Handover module, the small cell Node of the underloading is switched to for the Physical Cell Identifier according to the small cell Node of the underloading by the user in the range of the underloading cell coverage.

54th, macro base station according to claim 53, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

55th, a kind of load balancing apparatus, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the load balancing apparatus includes：

Receiver, the load state information for receiving the transmission of the small cell Node in the small cell cluster；Processor, the load state information for being received according to the receiver determines small cell Node to be adjusted；

Transmitter, for the small cell Node transmission load balancing indication signaling to be adjusted determined to the processor, so that the small cell Node to be adjusted carries out corresponding load balancing adjustment according to the load balancing signaling.

56th, load balancing apparatus according to claim 55, it is characterised in that the small cell Node to be adjusted includes overloading small cell Node；The load balancing indication signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node of the overload, and the small cell Node of the underloading will be switched in the user at the overload cell coverage edge for indicating the small cell Node of overload according to the Physical Cell Identifier of the small cell Node of the underloading；Or,

The small cell Node to be adjusted includes overloading small cell Node and the underloading small cell Node adjacent with the small cell Node of overload；The load balancing indication signaling is used to indicate the small cell Node reduction cell own reference signal power of the overload, for indicating that the small cell Node of the underloading improves cell own reference signal power. 57th, load balancing apparatus according to claim 56, it is characterised in that the processor, is additionally operable to determine the load condition of the small cell cluster according to the load state information that the receiver is received；The transmitter, the load state information of small cell cluster for being additionally operable to determine the processor is sent to the macro base station, so that the macro base station generates the load balancing indication signaling according to the load state information of the small cell cluster and the load condition of the macro base station；

The receiver, is additionally operable to receive the load balancing indication signaling that the macro base station is sent.

58th, load balancing apparatus according to claim 57, it is characterized in that, the load balancing indication signaling includes the Physical Cell Identifier of the macro base station, so that the user in the overload cell coverage edge is switched in the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the macro base station.

59th, load balancing apparatus according to claim 57, it is characterized in that, the load balancing indication signaling includes the Physical Cell Identifier of the adjacent macro base station of the macro base station, so that the user in the overload cell coverage edge is switched in the adjacent macro base station of the macro base station by the small cell Node of overload according to the Physical Cell Identifier of the adjacent macro base station of the macro base station.

60th, load balancing apparatus according to claim 57, it is characterised in that the load balancing indication signaling includes power adjustment instruction, so that the small cell Node reduction cell own reference signal power of the overload.

61st, the load balancing apparatus according to any one of claim 56 60, it is characterised in that the receiver, is additionally operable to receive the overload messages that the small cell Node of overload is sent；

The transmitter, it is additionally operable to send the overload indication signaling that the receiver is received to the small cell Node of overload, the overload indication signaling is used to indicate the speed of the user less than pre-set priority of the small cell Node reduction access of the overload or deletes the user for being less than pre-set priority.

62nd, the load balancing apparatus according to any one of claim 55 61, it is characterized in that, the transmitter, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

63rd, the load balancing apparatus according to any one of claim 55 62, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

64th, a kind of load balancing apparatus, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, the load balancing dress Put including：

Receiver, the load state information for receiving the transmission of the small cell Node in the small cell cluster；Processor, the load state information for being received according to the receiver determines the load condition of the small cell cluster；

Transmitter, the load state information of the small cell cluster for the processor to be determined is sent to the macro base station, so that the macro base station is according to the load state information of the small cell cluster and the load condition generation overload indication signaling of the macro base station；

The receiver, is additionally operable to receive the overload indication signaling that the macro base station is sent；The processor, is additionally operable to determine the small cell Node of underloading according to the load state information that the receiver is received；

The transmitter, it is additionally operable to send overload response signaling to the macro base station, so that the user in the range of the underloading cell coverage is switched to the small cell Node of the underloading by the macro base station according to the Physical Cell Identifier of the small cell Node of the underloading.

65th, load balancing apparatus according to claim 64, it is characterized in that, the transmitter, it is additionally operable to the small cell Node into the small cell cluster and sends load condition solicited message, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

66th, the load balancing apparatus according to claim 64 or 65, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

67th, a kind of small cell Node, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the small cell Node includes：

Transmitter, for sending load state information to the load balancing apparatus；

Receiver, for receiving the load balancing indication signaling that the load balancing apparatus is sent, the load balancing indication signaling is what the load balancing apparatus was determined according to the load state information；

Processor, the load balancing signaling for being received according to the receiver carries out load balancing adjustment.68th, small cell Node according to claim 67, it is characterized in that, the small cell Node is the small cell Node of overload, the load balancing signaling includes the Physical Cell Identifier of the underloading small cell Node adjacent with the small cell Node, and it is slight that the user in the cell coverage edge is switched to the underloading by the processor specifically for the Physical Cell Identifier according to the small cell Node of the underloading Area's node；Or, the load balancing indication signaling is used to indicate that the processor reduces cell own reference signal power according to the instruction of the load balancing indication signaling；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station, and the user in the cell coverage edge is switched to the macro base station by the processor specifically for the Physical Cell Identifier according to the macro base station；Or, the load balancing signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, and the processor by the user in the cell coverage edge according to the Physical Cell Identifier of the macro base station adjacent with the macro base station specifically for being switched to the macro base station adjacent with the macro base station.

69th, small cell Node according to claim 67, it is characterised in that the small cell Node is the small cell Node of underloading, the load balancing indication signaling is used to indicate that the processor improves cell own reference signal power.

70th, the small cell Node according to claim 68 or 69, it is characterised in that the transmitter, is additionally operable to send overload messages to the load balancing apparatus；

The receiver, is additionally operable to receive the overload indication signaling that the load balancing apparatus is sent；The processor, is additionally operable to the speed of the user less than pre-set priority of reduction access or deletes the user for being less than pre-set priority.

71st, the small cell Node according to any one of claim 67 70, it is characterized in that, the receiver, it is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

72nd, the small cell Node according to any one of claim 67 71, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

73rd, a kind of small cell Node, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the small cell Node includes：

Transmitter, for sending load state information to the load balancing apparatus；

Receiver, for receiving the handover request that the macro base station is sent, the handover request is load state information and the load condition generation of the macro base station for the small cell cluster that the macro base station is sent according to the load balancing apparatus；

The transmitter, is additionally operable to send handoff response to the macro base station, so that the user in the range of the cell coverage is switched to the small cell Node by the macro base station. 74th, the small cell Node according to claim 73, it is characterized in that, the receiver, is additionally operable to receive the load condition solicited message that the load balancing apparatus is sent, the load condition solicited message is used to indicate that the small cell Node reports the load state information.

75th, the small cell Node according to claim 73 or 74, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.

76th, a kind of macro base station, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Receiver, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

Processor, the load state information of small cell cluster and the load condition of the macro base station for being received according to the receiver generate load balancing indication signaling；

Transmitter, load balancing indication signaling for sending from the processor generation to the load balancing apparatus, so that the load balancing apparatus determines to indicate that the small cell Node to be adjusted carries out corresponding load balancing adjustment after small cell Node to be adjusted according to the load state information.

77th, the macro base station according to claim 76, it is characterised in that the load condition of the macro base station is underloading；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

78th, the macro base station according to claim 76, it is characterised in that the load condition of the macro base station is overload；The load balancing indication signaling includes the Physical Cell Identifier of the macro base station adjacent with the macro base station, for making the load balancing apparatus indicate the small cell Node to be adjusted by covering edge for being switched to the macro base station adjacent with the macro base station；Or,

The load balancing indication signaling is used to make the load balancing apparatus indicate the small cell Node reduction cell own reference signal power to be adjusted.

79th, the macro base station according to any one of claim 76 78, it is characterised in that the load state information includes：Spectral occupancy, community user number, the network capacity of business, idling-resource rate, Reserve at least one in the corresponding capacity of resource.

80th, a kind of macro base station, it is characterised in that wireless network includes macro base station, small cell cluster and load balancing apparatus, the small cell cluster includes multiple small cell Nodes, and the macro base station includes：

Receiver, load state information for receiving the small cell cluster that the load balancing apparatus is sent, the load state information of the small cell cluster receives what is sent after the load state information that the small cell Node in the small cell cluster is sent for the load balancing apparatus；

Processor, indication signaling is overloaded for the load state information of small cell cluster received according to the receiver and the load condition generation of the macro base station；

Transmitter, the overload indication signaling for sending the processor generation to the load balancing apparatus, so that the load balancing apparatus determines the small cell Node of underloading according to the load state information；

The receiver, is additionally operable to receive the overload response signaling that the load balancing apparatus is sent, the overload response signaling includes the Physical Cell Identifier of the small cell Node of the underloading；

The processor, is additionally operable to that the user in the range of the underloading cell coverage is switched into the small cell Node of the underloading according to the Physical Cell Identifier of the small cell Node of the underloading.

81st, the macro base station according to claim 80, it is characterised in that the load state information includes：At least one in spectral occupancy, community user number, the network capacity of business, idling-resource rate, the reserved corresponding capacity of resource.