CN107493591A - Reduce LTE load balance optimization methods and the base station of signaling consumption - Google Patents
Reduce LTE load balance optimization methods and the base station of signaling consumption Download PDFInfo
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- CN107493591A CN107493591A CN201710573677.8A CN201710573677A CN107493591A CN 107493591 A CN107493591 A CN 107493591A CN 201710573677 A CN201710573677 A CN 201710573677A CN 107493591 A CN107493591 A CN 107493591A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention, which provides a kind of LTE load balance optimization methods for reducing signaling consumption and base station, wherein method, to be included：When local cell basestation detects that home cell is overloaded, configured to the UE sending measurings for being linked into home cell；When receiving the measurement report for coming from and being reported after the UE measures according to the measurement configuration to neighbor cell, handover request is sent to multiple neighbor cell base stations involved by the measurement report；The load information of the corresponding neighbor cell carried in the switching request acknowledgement message replied according to the multiple neighbor cell base station, a neighbor cell is switched to by the UE.Load information of the invention by carrying corresponding neighbor cell in switching request acknowledgement message, so that avoided the need between base station by periodicity send and process resource state new information come reach obtain base station between neighboring cell loading information purpose, so reduce substantial amounts of signaling consumption.
Description
Technical field
The present invention relates to moving communicating field, more particularly to a kind of LTE load balance optimization methods for reducing signaling consumption
And base station.
Background technology
In the protocol stack of Long Term Evolution (LTE, Long Term Evolution) system, mobility load balance
(Mobility Load Balancing, MLB) mechanism solves minizone industry by way of migrating UE to low-load adjacent cell
The unbalanced problem of business amount, to improve wireless resource utility efficiency.Specific practice is that the eNB worked as in a certain cell (e-NodeB, is drilled
Enter type base station) load exceed threshold value after, choose some UE (User Equipment, user equipment) in the cell and issue
Measurement configuration information, the UE for receiving the measurement configuration information report the measurement report of some adjacent area, and eNB has now been connect by X2
Mouth obtains the load information of neighbor cell, and eNB decides whether the UE being switched to the adjacent area according to the load information.
X2 interface is the interconnection interface between multiple eNB, supports the direct transmission of data and signaling.It is as shown in figure 4, existing
The mode that adjacent area load information is obtained between eNB base stations in LTE network is as follows：
For example, the base station for setting three neighbor cells in LTE network is respectively eNB1, eNB2 and eNB3, when eNB1 wants to obtain
When taking eNB2 load information, eNB1 to eNB2 send resource status request (RESOURCE STATUS REQUEST), eNB2 to
ENB1 replys resource status response (RESOURCE STATUS RESPONSE)；Then, eNB2 periodically sends resource to eNB1
State updates (RESOURCE STATUS UPDATE).Above-mentioned signaling is transmitted by X2 interface.Similarly, eNB2, eNB3 are worked as
When wanting to obtain eNB1 load information, above-mentioned same operation is also done.If neighbor base station quantity is very big each other, and in order to
The sensitivity of the real-time and load regulation of proof load information, sends that the cycle of load information interaction is shorter, and the frequency is very high, this
Sample will result in X2 interface and produce substantial amounts of signaling, and eNB each load interactive information is transmitted and reception processing, from
And to consume substantial amounts of system resource.
The content of the invention
The problem to be solved in the present invention is, during LTE load balancing, which kind of scheme proof load balancing procedure taken
Smoothly complete, and avoid to obtain load information and caused a large amount of signaling consumptions between eNB, due to that need not send and locate
Substantial amounts of signaling is managed, and then optimizes the system resource of each eNB in network.
One aspect of the present invention provides a kind of LTE load balance optimization methods for reducing signaling consumption, including：
When local cell basestation detects that home cell is overloaded, match somebody with somebody to the UE sending measurings for being linked into home cell
Put；
Come from the UE according to the measurement report for measuring and being reported after configuration measures to neighbor cell when receiving
During announcement, handover request is sent to multiple neighbor cell base stations involved by the measurement report；
The corresponding neighbor cell carried in the switching request acknowledgement message replied according to the multiple neighbor cell base station
Load information, the UE is switched to a neighbor cell.
Another aspect of the present invention provides a kind of base station, including：
Measurement module, for when the home cell where detecting the base station is overloaded, to being linked into home cell
UE sending measurings configuration；
Handover request module, for when receive come from the UE according to it is described measurement configuration neighbor cell is surveyed
During the measurement report reported after amount, handover request is sent to multiple neighbor cell base stations involved by the measurement report；
Switching executing module, for being carried in the switching request acknowledgement message replied according to the multiple neighbor cell base station
Corresponding neighbor cell load information, the UE is switched to a neighbor cell.
Load information of the invention by carrying corresponding neighbor cell in switching request acknowledgement message so that between base station
Avoid the need for reaching neighboring cell loading information between acquisition base station by periodicity transmission and process resource state new information
Purpose, so reduce substantial amounts of signaling consumption.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the LTE load balance optimization methods embodiment one of reduction signaling consumption of the present invention；
Fig. 2 is the flow chart of the LTE load balance optimization methods embodiment two of reduction signaling consumption of the present invention；
Fig. 3 is the flow chart of the LTE load balance optimization methods embodiment three of reduction signaling consumption of the present invention；
Fig. 4 is the structural representation of base station embodiment of the present invention；
Fig. 5 is the mode and process that prior art realizes load information interaction between base station.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the flow chart of the LTE load balance optimization methods embodiment one of reduction signaling consumption of the present invention, is such as schemed
It is shown, comprise the following steps：
Step 110, when local cell basestation detects that home cell is overloaded, issued to the UE for being linked into home cell
Measurement configuration.
Wherein, the overload refers to that the present load amount of the home cell has exceeded predetermined threshold value；The UE refers to
It is currently accessed one or more user equipmenies to home cell；The measurement is configured to indicate that UE enters to which neighbor cell
Which measurement of row.
Specifically, multiple UE can be selected from the whole UE for being linked into the home cell by local cell basestation, such as
It can select to be located locally the UE near cell edge, issuing the measurement to selected the multiple UE configures；.
Step 120, when receive come from the UE according to it is described measurement configuration neighbor cell is measured after report
Measurement report when, to involved by the measurement report multiple neighbor cell base stations send handover request.
Specifically, can when receive come from the first measurement report in multiple UE when, start default timing
Device；In the timed period of the timer, the multiple measurement reports reported by the UE are received.
Step 130, the corresponding phase carried in the switching request acknowledgement message replied according to the multiple neighbor cell base station
The load information of adjacent cell, the UE is switched to a neighbor cell.
Specifically, can be according to the load information, by load capacity less than predetermined threshold value and minimum adjacent of load capacity
Cell is chosen to be Target cell；Then send switching to the base station of the Target cell and perform signaling, the UE is linked into institute
State Target cell.
Further optionally, the UE is made to include after being linked into the Target cell：To replying, the handover request is true
The neighbor cell base station for recognizing message sends handover cancelling signaling.
The present embodiment methods described is made by carrying the load information of corresponding neighbor cell in switching request acknowledgement message
Avoid the need between base station sending by periodicity and process resource state new information come reach obtain it is adjacent small between base station
The purpose of area's load information, so reduce substantial amounts of signaling consumption.
Fig. 2 is the flow chart of the LTE load balance optimization methods embodiment two of reduction signaling consumption of the present invention, wherein
Describe during MLB using the switching mode migration UE of the X2 interface between local cell basestation and neighbor cell base station
Flow, as illustrated, comprising the following steps：
Step 201, in LTE network, if local cell basestation eNB1 detects that home cell s overloads；
Step 202, eNB1 chooses the configuration of some UE sending measurings in cell s, typically using A4 or A5 measurement configurations, connects
The UE for receiving configuration continues reporting measurement reports；
Step 203, if eNB1 is in first measurement report that the UE1 in receiving multiple UE is sent, timing is started for UE1
Device T1, those skilled in the art can preset timer duration.In T1 time-out durations, by the adjacent area in UE1 measurement reports
Alternately Target cell, including the cell in first measurement report of triggering timer.If T1 start to time-out this
The section time, the measurement result of the neighbor cell where neighbor cell base station eNB2, eNB3, eNB4 is reported in UE1 measurement reports；
Step 204, after timer T1 time-out, handoff decision result is X2 switching modes, now simultaneously to the standby of UE1 switchings
Target eNB (eNB2, eNB3, eNB4) cell is selected to initiate X2 handover requests (X2 HANDOVER REQUEST)；
Step 205, each target eNB (eNB2, eNB3, eNB4) of the related handover requests of UE1 is received, respectively to eNB1
X2 Handover Request Acknowledges (X2 HANDOVER REQUEST ACKNOWLEGE) are replied, are carried in Handover Request Acknowledge signaling respective
The load information of related cell.Load information includes：Related cell PRB utilization rates, synchronous state number of users, transfer resource and hardware
Resource load information；
Step 206, eNB1 extracts the load information in each Handover Request Acknowledge received, by comparing, choosing
Load is taken less than receiving thresholding and the best cell (eNB3 cell) of loading condition, it is complete using eNB3 as selected target eNB
The flow switched into follow-up UE1 to eNB3, is not described in detail herein；
Step 207, eNB1 sends handover cancelling signaling to other alternative eNB (eNB2, eNB4) beyond selected target eNB
(X2 HANDOVER CANCEL), terminate to eNB2, eNB4 X2 switching flows.
In the present embodiment methods described, X2 switching request acknowledgement messages (X2 HANDOVER REQUEST ACKNOWLEGE)
In, carry the load information of purpose cell, the eNB in such LTE network avoids the need for sending by periodicity and processing money
Source state new information (RESOURCE STATUSUPDATE) come reach obtain base station between neighboring cell loading information purpose,
So reduce substantial amounts of signaling consumption.
Fig. 3 is the flow chart of the LTE load balance optimization methods embodiment three of reduction signaling consumption of the present invention, wherein
Describe during MLB using local cell basestation and neighbor cell base station and MME (Mobility Management
Entity, mobility management entity) between S1 interfaces switching mode migration UE flow, as illustrated, including as follows walk
Suddenly：
Step 301, in LTE network, if eNB1 detects that home cell s overloads.
Step 302, eNB1 chooses the configuration of some UE sending measurings in cell s, typically using A4 or A5 measurement configurations, connects
The UE for receiving configuration continues reporting measurement reports.
Step 303, if eNB1 is in first measurement report that the UE1 in receiving multiple UE is sent, timing is started for UE1
Device T1, those skilled in the art can preset timer duration.In T1 time-out durations, by the adjacent area in UE1 measurement reports
Alternately Target cell (including cell in first measurement report of triggering timer).If T1 starts to overtime this section
Between, eNB2, the measurement result of eNB3, eNB4 cell are reported in UE1 measurement reports.
Step 304, after timer T1 time-out, handoff decision result is S1 switching modes, now simultaneously to MME send on
The S1 handover requests (S1 HANDOVER REQUEST) of UE1 switching alternative target eNB (eNB2, eNB3, eNB4) cell.
Step 305, the S1 handover requests received (S1 HANDOVER REQUEST) are transmitted to corresponding eNB by MME respectively
(eNB2, eNB3, eNB4).
Step 306, the eNB (eNB2, eNB3, eNB4) of the related handover requests of UE1 is received, S1 is replied to MME respectively and cuts
Change request and confirm (S1 HANDOVER REQUEST ACKNOWLEGE), this eNB correlations are carried in S1 Handover Request Acknowledge signalings
The load information of cell.Load information includes：Related cell PRB utilization rates, synchronous state number of users, transfer resource and hardware resource
Load information.
Step 307, after MME receives each S1 Handover Request Acknowledges (S1 HANDOVER REQUEST ACKNOWLEGE),
Load information is extracted, respective S1 switching command messages (S1 HANDOVER COMMAND) is encapsulated into, is sent respectively to
eNB1。
Step 308, eNB1 extracts the load information in each S1 switching command messages received, by comparing,
Load is chosen less than receiving thresholding and the best cell (eNB3 cell) of loading condition, using eNB3 as selected target eNB,
The flow that follow-up UE1 switches to eNB3 is completed, is not described in detail herein.
Step 309, eNB1 is sent on eNB2, eNB4 S1 handover cancellings signaling (S1 HANDOVER to MME respectively
CANCEL), terminate to eNB2, eNB4 S1 switching flows.
In the present embodiment methods described, cell is realized by S1 interfaces and switched, it is not necessary to using the X2 interface between base station,
Therefore be advantageous to further mitigate the burden of X2 interface.
Fig. 4 is the structural representation of base station embodiment of the present invention, to realize the above method, as illustrated, the base
Station comprises at least：Measurement module 10, handover request module 20 and switching executing module 30, its operation principle are as follows：
When the home cell where detecting the base station is overloaded, measurement module 10 is to the UE for being linked into home cell
Sending measuring configures.Specifically, multiple UE can be selected from the whole UE for being linked into the home cell, and to selected
The multiple UE issues the measurement configuration.
Come from the UE according to the measurement report for measuring and being reported after configuration measures to neighbor cell when receiving
During announcement, multiple neighbor cell base stations involved by handover request module 20 to the measurement report send handover request.Specifically, may be used
With by the timing unit 21 in handover request module 20 when receive come from the first measurement report in multiple UE when, open
Move default timer；In the timed period of the timer, the multiple institutes reported by the UE are received by receiving unit 22
State measurement report.
Then in the switching request acknowledgement message replied by switching executing module 30 according to the multiple neighbor cell base station
The load information of the corresponding neighbor cell carried, a neighbor cell is switched to by the UE.Specifically, can be by switching
Load capacity is less than predetermined threshold value and load capacity is minimum by the selecting unit 31 in execution module 30 according to the load information
Neighbor cell is chosen to be Target cell；And send switching to the base station of the Target cell from signaling unit 32 and perform signaling, make
The UE is linked into the Target cell, and sends switching to the neighbor cell base station for replying the switching request acknowledgement message
Cancel signaling.
Wherein, above-mentioned handover request, switching request acknowledgement message, switching execution signaling or handover cancelling signaling can lead to
Cross as the X2 interface transmission between the base station of local cell basestation and the neighbor cell base station, or by the base station and
S1 interfaces transmission between the neighbor cell base station and MME.It is specific perform can journey can be found in the correlation of above method embodiment
Content, here is omitted.
Base station described in the present embodiment is made by carrying the load information of corresponding neighbor cell in switching request acknowledgement message
Avoid the need between base station sending by periodicity and process resource state new information come reach obtain it is adjacent small between base station
The purpose of area's load information, so reduce substantial amounts of signaling consumption.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
- A kind of 1. LTE load balance optimization methods for reducing signaling consumption, it is characterised in that including：When local cell basestation detects that home cell is overloaded, configured to the UE sending measurings for being linked into home cell；When receiving the measurement report for coming from and being reported after the UE measures according to the measurement configuration to neighbor cell, Handover request is sent to multiple neighbor cell base stations involved by the measurement report；The load of the corresponding neighbor cell carried in the switching request acknowledgement message replied according to the multiple neighbor cell base station Information, the UE is switched to a neighbor cell.
- 2. according to the method for claim 1, it is characterised in that described to include to UE sending measurings configuration：Multiple UE are selected from the whole UE for being linked into the home cell；The measurement configuration is issued to selected the multiple UE.
- 3. according to the method for claim 1, it is characterised in that receiving the measurement report includes：When receive come from the first measurement report in multiple UE when, start default timer；In the timed period of the timer, the multiple measurement reports reported by the UE are received.
- 4. according to the method for claim 1, it is characterised in that the UE is switched into a neighbor cell includes：According to the load information, it is small that load capacity less than predetermined threshold value and the minimum neighbor cell of load capacity is chosen to be target Area；Switching is sent to the base station of the Target cell and performs signaling, the UE is linked into the Target cell.
- 5. according to the method for claim 4, it is characterised in that the UE is included after being linked into the Target cell： Handover cancelling signaling is sent to the neighbor cell base station for replying the switching request acknowledgement message.
- 6. according to the method for claim 5, it is characterised in that the handover request, the switching request acknowledgement message, institute State switching execution signaling and the handover cancelling signaling passes through between the local cell basestation and the neighbor cell base station X2 interface transmits, or is transmitted by the S1 interfaces between the local cell basestation and the neighbor cell base station and MME.
- A kind of 7. base station, it is characterised in that including：Measurement module, for when the home cell where detecting the base station is overloaded, to the UE for being linked into home cell Sending measuring configures；Handover request module, for when receive come from the UE according to it is described measurement configuration neighbor cell is measured after During the measurement report reported, handover request is sent to multiple neighbor cell base stations involved by the measurement report；Switching executing module, for the phase carried in the switching request acknowledgement message replied according to the multiple neighbor cell base station The load information of neighbor cell is answered, the UE is switched to a neighbor cell.
- 8. base station according to claim 7, it is characterised in that the handover request module includes：Timing unit, for when receive come from the first measurement report in multiple UE when, start default timer；Receiving unit, in the timed period of the timer, receiving the multiple measurement reports reported by the UE.
- 9. base station according to claim 7, it is characterised in that the switching executing module includes：Selecting unit, for according to the load information, by load capacity less than predetermined threshold value and minimum adjacent small of load capacity Area is chosen to be Target cell；Signaling unit, signaling is performed for sending switching to the base station of the Target cell, the UE is linked into the target Cell, and send handover cancelling signaling to the neighbor cell base station for replying the switching request acknowledgement message.
- 10. base station according to claim 9, it is characterised in that the handover request, the switching request acknowledgement message, The switching perform signaling and the handover cancelling signaling by be used as the base station of local cell basestation with it is described adjacent small X2 interface transmission between area base station, or by between the local cell basestation and the neighbor cell base station and MME S1 interfaces transmit.
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| CN111225417A (en) * | 2018-11-23 | 2020-06-02 | 中兴通讯股份有限公司 | Method, device and storage medium for realizing load balance |
| CN112533254A (en) * | 2019-09-17 | 2021-03-19 | 中国移动通信有限公司研究院 | Cell load balancing method, device and network equipment |
| CN113727404A (en) * | 2021-10-19 | 2021-11-30 | 中国联合网络通信集团有限公司 | Cell measurement method, base station, core network device, terminal and medium for 5G network |
| CN113873584A (en) * | 2020-06-30 | 2021-12-31 | 大唐移动通信设备有限公司 | Cell switching method and communication device |
| CN114125965A (en) * | 2021-11-23 | 2022-03-01 | 中国电信股份有限公司 | Cell switching method, base station, terminal and communication system |
| WO2022103309A1 (en) * | 2020-11-16 | 2022-05-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Network nodes and methods in a wireless communications network |
| WO2023273966A1 (en) * | 2021-06-30 | 2023-01-05 | 中兴通讯股份有限公司 | Cell handover method, and base station and computer-readable storage medium |
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| WO2023273966A1 (en) * | 2021-06-30 | 2023-01-05 | 中兴通讯股份有限公司 | Cell handover method, and base station and computer-readable storage medium |
| CN113727404A (en) * | 2021-10-19 | 2021-11-30 | 中国联合网络通信集团有限公司 | Cell measurement method, base station, core network device, terminal and medium for 5G network |
| CN114125965A (en) * | 2021-11-23 | 2022-03-01 | 中国电信股份有限公司 | Cell switching method, base station, terminal and communication system |
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Application publication date: 20171219 |