GB2594373A - Method and system to minimise the signalling and delay caused by mobility management function in cellular networks - Google Patents
Method and system to minimise the signalling and delay caused by mobility management function in cellular networks Download PDFInfo
- Publication number
- GB2594373A GB2594373A GB2107755.7A GB202107755A GB2594373A GB 2594373 A GB2594373 A GB 2594373A GB 202107755 A GB202107755 A GB 202107755A GB 2594373 A GB2594373 A GB 2594373A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emmf
- base station
- handover
- module
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract 25
- 230000001413 cellular effect Effects 0.000 title claims abstract 7
- 230000011664 signaling Effects 0.000 title claims 2
- 238000005457 optimization Methods 0.000 claims abstract 7
- 230000000737 periodic effect Effects 0.000 claims abstract 4
- 239000000523 sample Substances 0.000 claims 2
- 238000000638 solvent extraction Methods 0.000 claims 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
-
- 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
- H04W28/086—Load balancing or load distribution among access entities
- H04W28/0861—Load balancing or load distribution among access entities between base stations
-
- 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
- H04W28/088—Load balancing or load distribution among core entities
-
- 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
- H04W28/09—Management thereof
- H04W28/0925—Management thereof using policies
- H04W28/0942—Management thereof using policies based on measured or predicted load of entities- or links
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- 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
- H04W28/0827—Triggering entity
- H04W28/0831—Core entity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides system to minimise the number of handover operations in a cellular network, the network comprises at least one core network entity managing the mobility function (EMMF), a plurality of base station nodes wherein each base station defines a cell, at least one moving User Equipment (UE) node, the system comprising a handover module at each of the base station nodes wherein the module is configured to: determine when a handover request occurs at a base station node; trigger an optimization process manually or whenever a handoff request occurs or on a periodic basis or if the EMMF reaches a load limit the EMMF sends a reassignment request. The invention describes a distributed and centralised approach to minimise the number of handover operations in a cellular network.
Claims (21)
1. A computer implemented method to minimise the number of handover operations in a cellular network, the network comprises at least one network entity managing the mobility function (EMMF), a plurality of base station nodes wherein each base station defines a cell, at least one moving User Equipment (UE) node, the method comprising the step of: providing a handover module at each of the base station nodes wherein a module is configured to perform the steps of: determining when a handover request occurs at a base station node; and triggering an optimization process manually or whenever a handoff request occurs or on a periodic basis or if the EMMF reaches a load limit the EMMF sends a reassignment request.
2. The computer implemented method of claim 1 comprising the step of updating a base station counter when a handover is determined and calculating an energy of attraction towards the at least one EMMF based on a predetermined criteria.
3. The computer implemented method of any preceding claim wherein the calculated energy of attraction towards an EMMF is the ratio between the number of handover requests that come from the EMMF and the total number of handover requests that arrive at the base station.
4. The computer implemented method of any preceding claim comprising the step of deciding whether to stay assigned to the at least one EMMF or to change its assignment to another EMMF after the counter is updated .
5. The computer implemented method of claim 4 wherein if the difference between the attraction towards another EMMF and the at least one EMMF is greater than a defined threshold, the base station is configured to request a change of assignment.
6. The computer implemented method of any preceding claim comprising the step of utilising local information available at one or more nodes to trigger the optimization process.
7. The computer implemented method of any preceding claim comprising the step of receiving at the EMMF a request from a node to get assigned to the EMMF wherein if the sum of the current load of the EMMF and the load coming from the node that is requesting the assignment is lower than a threshold ( ,nMH), assigning the node to the EMMF.
8. The computer implemented method of any preceding claim comprising the step of receiving at the EMMF a request from a node to get assigned to the EMMF wherein if the total load is greater than the threshold, the assignment can be accepted or rejected depending on the energy of attraction of the cell that is requesting the assignment.
9. The computer implemented method of any preceding claim comprising the step of receiving at the EMMF a request from a node to get assigned to the EMMF wherein if the energy of attraction of the cell is lower than the attraction of all other cells that are currently attached to the EMMF of interest, the assignment request will be rejected.
10-The computer implemented method of any preceding claim comprising the step of receiving at the EMMF a request from a node to get assigned to the EMMF wherein if the energy of attraction of the cell is greater than the attraction of at least another cell that is currently attached to the EMMF of interest, the cell will be assigned to the EMMF and the cell with the lowest energy of attraction that was assigned to the EMMF already will be configured to request a change of assignment to another EMMF.
11. The computer implemented method of any preceding claim wherein the at least one EMMF comprises a Mobility Management Entity (MME) node.
12.The computer implemented method of any preceding claim wherein the at least one EMMF comprises an Access and Mobility Function (AMF) instance.
13.The computer implemented method of any preceding claim wherein the handover module is a distributed handover module.
14.A computer implemented method to minimize the Tracking Area Update (TAU) and Paging signalling in a cellular network, the network comprises at least one core network entity managing the mobility function (EMMF), a plurality of base station nodes wherein each base station defines a cell, at least one moving User Equipment (UE) node, the method comprising the step of: providing a module at each of the base station nodes wherein the module is configured to perform the steps of: determining when a TAU or Paging request occurs at a base station node; and triggering an optimization process manually or whenever a TAU or Paging request occurs or on a periodic basis.
15.A computer implemented method to minimise the number of handover operations in a cellular network, the network comprises at least one network entity managing the mobility function (EMMF), a plurality of base station nodes wherein each base station defines a cell, at least one moving User Equipment (UE) node, the method comprising the step of: providing a handover module at each of the base station nodes; configuring an optimization module or a passive probe module to periodically collect handover information from the or each handover module wherein the optimization module is configured to perform the steps of: partitioning of the base station nodes into a predefined number of non overlapping regions, each assigned to an EMMF, so as to minimize the number of inter-region handovers; and enabling an extension of each region to allow overlap between the regions assigned to different EMMFs.
16.The computer implemented method of claim 15 wherein the passive probe module is configured in combination with an operations system support (OSS) module to periodically collect handover information from the or each handover module.
17.A system to minimise the number of handover operations in a cellular network, the network comprises at least one core network entity managing the mobility function (EMMF), a plurality of base station nodes wherein each base station defines a cell, at least one moving User Equipment (UE) node, the system comprising a handover module at each of the base station nodes wherein the module is configured to: determine when a handover request occurs at a base station node; trigger an optimization process manually or whenever a handoff request occurs or on a periodic basis or if the EMMF reaches a load limit the EMMF sends a reassignment request.
18. The system of claim 17 wherein the module is configured to update a base station counter when a handover is determined and calculating an energy of attraction towards the at least one EMMF based on a predetermined criteria.
19.The system of claim 18 wherein the calculated energy of attraction towards an EMMF is the ratio between the number of handover requests that come from the EMMF and the total number of handover requests that arrive at the base station.
20.The system of any of claims 17 to 19 wherein the module is configured to decide whether to stay assigned to the at least one EMMF or to change its assignment to another EMMF after the counter is updated.
21. The system of claim 20 wherein if the difference between the attraction towards another EMMF and the at least one EMMF is greater than a defined threshold, the base station is configured to request a change of assignment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB1818733.6A GB201818733D0 (en) | 2018-11-16 | 2018-11-16 | Method and system to minimise the signalling and delay caused by mobility management function in cellular networks |
| PCT/EP2019/081665 WO2020099681A1 (en) | 2018-11-16 | 2019-11-18 | Method and system to minimise the signalling and delay caused by mobility management function in cellular networks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202107755D0 GB202107755D0 (en) | 2021-07-14 |
| GB2594373A true GB2594373A (en) | 2021-10-27 |
Family
ID=64739992
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB1818733.6A Ceased GB201818733D0 (en) | 2018-11-16 | 2018-11-16 | Method and system to minimise the signalling and delay caused by mobility management function in cellular networks |
| GB2107755.7A Withdrawn GB2594373A (en) | 2018-11-16 | 2019-11-18 | Method and system to minimise the signalling and delay caused by mobility management function in cellular networks |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB1818733.6A Ceased GB201818733D0 (en) | 2018-11-16 | 2018-11-16 | Method and system to minimise the signalling and delay caused by mobility management function in cellular networks |
Country Status (2)
| Country | Link |
|---|---|
| GB (2) | GB201818733D0 (en) |
| WO (1) | WO2020099681A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110306363A1 (en) * | 2009-02-25 | 2011-12-15 | Xuelong Wang | Method, apparatus and system for optimizing and updating tracking area |
| US20140301200A1 (en) * | 2011-06-02 | 2014-10-09 | Ntt Docomo, Inc. | Radio control base station and method of determining connection-target switching center |
| US20170094577A1 (en) * | 2015-09-24 | 2017-03-30 | Samsung Electronics Co., Ltd | Method and apparatus for improving mobility in wireless communication system |
| CN107872803A (en) * | 2016-09-26 | 2018-04-03 | 中国电信股份有限公司 | A kind of MME POOL determination method and apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100557125B1 (en) | 2003-09-01 | 2006-03-03 | 삼성전자주식회사 | Method and apparatus for generating handover neighbor list in cellular mobile communication system |
| KR20080068993A (en) | 2007-01-22 | 2008-07-25 | 삼성전자주식회사 | Resource reservation device and method in mobile IP system |
-
2018
- 2018-11-16 GB GBGB1818733.6A patent/GB201818733D0/en not_active Ceased
-
2019
- 2019-11-18 WO PCT/EP2019/081665 patent/WO2020099681A1/en not_active Ceased
- 2019-11-18 GB GB2107755.7A patent/GB2594373A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110306363A1 (en) * | 2009-02-25 | 2011-12-15 | Xuelong Wang | Method, apparatus and system for optimizing and updating tracking area |
| US20140301200A1 (en) * | 2011-06-02 | 2014-10-09 | Ntt Docomo, Inc. | Radio control base station and method of determining connection-target switching center |
| US20170094577A1 (en) * | 2015-09-24 | 2017-03-30 | Samsung Electronics Co., Ltd | Method and apparatus for improving mobility in wireless communication system |
| CN107872803A (en) * | 2016-09-26 | 2018-04-03 | 中国电信股份有限公司 | A kind of MME POOL determination method and apparatus |
Non-Patent Citations (1)
| Title |
|---|
| HUAWEI ET AL: 'Load balancing and overload handling' 3GPP DRAFT; S2-082208, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE; 650, ROUTE DES LUCIOLES; F-06921 SOPHIA-ANTIPOLIS CEDEX; FRANCE, vol. SA WG2, no.Jeju; 20080401, 1 April 2008(2008-04-01),XP050264569 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202107755D0 (en) | 2021-07-14 |
| GB201818733D0 (en) | 2019-01-02 |
| WO2020099681A1 (en) | 2020-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |