CN106973411A - A kind of flow control methods in LTE system handoff procedure - Google Patents
A kind of flow control methods in LTE system handoff procedure Download PDFInfo
- Publication number
- CN106973411A CN106973411A CN201710388484.5A CN201710388484A CN106973411A CN 106973411 A CN106973411 A CN 106973411A CN 201710388484 A CN201710388484 A CN 201710388484A CN 106973411 A CN106973411 A CN 106973411A
- Authority
- CN
- China
- Prior art keywords
- mcs
- base station
- limitations
- timer
- source base
- 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.)
- Granted
Links
Classifications
-
- 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
- H04W28/0226—Traffic management, e.g. flow control or congestion control based on location or mobility
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention discloses the flow control methods in a kind of LTE system handoff procedure, and MCS limitations are introduced in handoff procedure, it is ensured that switches front and rear terminal flow performance in abnormal handoff environment, including receives the A3 events that UE is reported by source base station L3；Source base station L3 issues MCS limitations to source base station L2 and indicates message；Source base station L2 receives MCS limitations and indicates message；Source base station L2 limitation UE MCS>MCS_MIN, until UE is deleted；Purpose base station L2 limitation UE CS>MCS_MIN；Purpose base station L3 receives switching and matches somebody with somebody unlatching timer timer after completion message again；When timer timer meets condition timer >=T, purpose base station L3 sends MCS limitations to L2 and cancels instruction message；Purpose base station L2 receives MCS limitations and cancels instruction message；Purpose base station L2 cancels MCS limitations.The present invention has Important Economic value in Communications Market.
Description
Technical field
Cut the present invention relates to one kind in moving communicating field LTE (Long Term Evolution, Long Term Evolution) system
Flow control methods during changing.
Background technology
In LTE system, switching generally occurs in the region of dtr signal, when handoff environment has some exceptions, such as
When having stronger external disturbance, the bit error rate can steeply rise, because AMC (adaptive modulation and coding) system can be by UE (terminal)
MCS (coded modulation grade) be down to and extremely low value or even be reduced to 0, this is for some scenes for requiring to ensure flow in handoff procedures
For it is unacceptable, such as high-definition video signal, subway system integrate bearer service transmission.
In order to solve in handoff procedure, bit error rate height causes the problem of flow performance is low under abnormal conditions, and the present invention is in switching
During introduce MCS limitation, in the case where certain packet loss can be tolerated, it is ensured that UE flow performances are in higher level.
The content of the invention
It is an object of the invention to overcome bit error rate height under abnormal conditions to cause the low problem of flow performance to switch there is provided one kind
During flow ensuring method, it is ensured that after before the handover, terminal flow performance is maintained at higher level.
Technical scheme provides the flow control methods in a kind of LTE system handoff procedure, in handoff procedure
Introduce MCS limitations, it is ensured that switch front and rear terminal flow performance in abnormal handoff environment, the MCS is coded modulation grade, bag
Execution following steps are included,
1) source base station L3 receives the A3 events that UE is reported；
2) source base station L3 issues MCS limitations to source base station L2 and indicates message；
3) source base station L2 receives MCS limitations and indicates message；
4) source base station L2 limits UE MCS>MCS_MIN, until UE is deleted；Wherein, UE MCS are the coded modulation of terminal
Grade, MCS_MIN represents MCS lower limits under the scene；
5) purpose base station L2 limits UE MCS>MCS_MIN；Wherein, UE MCS are the coded modulation grade of terminal, MCS_
MIN represents MCS lower limits under the scene；
6) purpose base station L3 receives switching again with unlatching timer timer after completion message；
7) when timer timer meets condition timer >=T, purpose base station L3 sends MCS limitation cancellation instructions to L2 and disappeared
Breath；Wherein, T is time lag；
8) purpose base station L2 receives MCS limitation cancellations and indicates message；
9) purpose base station L2 cancels MCS limitations.
Moreover, step 4) and step 5) in MCS_MIN it is equal.
Moreover, corresponding MCS_MIN is respectively configured in uplink and downlink.
Moreover, MCS_MIN is configured to meet the MCS value of minimum flow demand during maximum RB.
Prior art is contrasted, the present invention introduces MCS restriction schemes in handoff procedure, to ensure that switching is front and rear, terminal stream
Property retention is measured in higher level, there is Important Economic value in Communications Market.The beneficial features of the present invention are as follows：
1) MCS limitations, are proposed, are solved under abnormal scene, bit error rate height causes terminal flow performance relatively low before and after switching
The problem of.
2), MCS_MIN can be set according to traffic demand in actual scene, and T can be drawn according to actual scene test, be realized
Scheme simple and flexible, with practical value.
Brief description of the drawings
Fig. 1 is flow chart of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.
The present invention in handoff procedure by introducing MCS restriction schemes, and solving the bit error rate height in abnormal scene causes to cut
The problem of changing flow in process poor performance.
Referring to accompanying drawing 1, the embodiment of the present invention introduces MCS restriction schemes in handoff procedure, to ensure terminal before the handover
Afterwards, flow performance is maintained at higher level, comprising performing the following steps in a base station：
1), source base station L3 receives the A3 events that UE is reported, and A3 events are reported for handover measurement；
2), source base station L3 issues MCS limitations to source base station L2 and indicates message；
3), source base station L2 receives MCS limitations and indicates message；
4), source base station L2 limits UE MCS>MCS_MIN, until UE is deleted；
Wherein, UE MCS are the coded modulation grade of terminal, and MCS_MIN represents MCS lower limits under the scene；
5), purpose base station L2 limits UE MCS>MCS_MIN；
When it is implemented, point of destination L2 starts to perform limitation during scheduling；
6), purpose base station L3 receives switching again with unlatching timer timer after completion message；
7), when timer timer meets condition timer >=T, purpose base station L3 sends MCS limitation cancellation instructions to L2 and disappeared
Breath；
Wherein, T is time lag；
8), purpose base station L2 receives MCS limitation cancellations and indicates message；
9), purpose base station L2 cancels MCS limitations.
Further, a switch mcs_limit can be set, as an optional base station configuration parameter, neatly supports
MCS restriction schemes are opened in selection under special screne.MCS_MIN and T may be alternatively provided as configurable configuration parameter, specific implementation
When can according to real needs set value.T can be drawn according to actual scene test.
Specifically, the step 4) with step 5) used in MCS_MIN be identical value, MCS is not differentiated between in step
Descending, i.e. up-downgoing uses same steps, and difference is that MCS_MIN values, can root in upflow and downflow
Factually border traffic demand uses different value, and MCS_MIN should be configured to meet minimum flow demand during maximum RB (wireless resource block)
Mcs values.Limited by above step, terminal MCS is restricted in handoff procedure, terminal flow can be guaranteed.
When it is implemented, method provided by the present invention can realize automatic running flow based on software engineering.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations.For general technical staff of the technical field of the invention, do not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, the protection of the present invention should be all considered as belonging to
Scope.
Claims (4)
1. the flow control methods in a kind of LTE system handoff procedure, it is characterised in that：MCS limitations are introduced in handoff procedure,
Ensure to switch front and rear terminal flow performance in abnormal handoff environment, the MCS is coded modulation grade, including perform following walk
Suddenly,
1) source base station L3 receives the A3 events that UE is reported；
2) source base station L3 issues MCS limitations to source base station L2 and indicates message；
3) source base station L2 receives MCS limitations and indicates message；
4) source base station L2 limits UE MCS>MCS_MIN, until UE is deleted；Wherein, UE MCS are coded modulation of terminal etc.
Level, MCS_MIN represents MCS lower limits under the scene；
5) purpose base station L2 limits UE MCS>MCS_MIN；Wherein, UE MCS are the coded modulation grade of terminal, MCS_MIN tables
Show MCS lower limits under the scene；
6) purpose base station L3 receives switching again with unlatching timer timer after completion message；
7) when timer timer meets condition timer >=T, purpose base station L3 sends MCS limitations to L2 and cancels instruction message；Its
In, T is time lag；
8) purpose base station L2 receives MCS limitation cancellations and indicates message；
9) purpose base station L2 cancels MCS limitations.
2. flow control methods in handoff procedure according to claim 1, it is characterised in that：Step 4) and step 5) in
MCS_MIN is equal.
3. the flow control methods in handoff procedure according to claim 1 or claim 2, it is characterised in that：Uplink and downlink are distinguished
Configure corresponding MCS_MIN.
4. flow control methods in handoff procedure according to claim 3, it is characterised in that：MCS_MIN is configured to maximum
The MCS value of minimum flow demand is met during RB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388484.5A CN106973411B (en) | 2017-05-27 | 2017-05-27 | Flow control method in LTE system switching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388484.5A CN106973411B (en) | 2017-05-27 | 2017-05-27 | Flow control method in LTE system switching process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106973411A true CN106973411A (en) | 2017-07-21 |
| CN106973411B CN106973411B (en) | 2020-04-10 |
Family
ID=59326672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710388484.5A Active CN106973411B (en) | 2017-05-27 | 2017-05-27 | Flow control method in LTE system switching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106973411B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483159A (en) * | 2017-09-20 | 2017-12-15 | 武汉虹信通信技术有限责任公司 | The AMC optimization methods of handoff procedure in a kind of LTE Rail Transit Systems |
| WO2019197027A1 (en) * | 2018-04-12 | 2019-10-17 | Nokia Technologies Oy | Methods and apparatuses for selective modulation and coding scheme (mcs) exclusion |
| CN114189317A (en) * | 2022-02-14 | 2022-03-15 | 北京宇航系统科技有限公司 | Method for realizing communication navigation remote sensing depth fusion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505880A (en) * | 2001-04-30 | 2004-06-16 | �ƶ��Ѷ��� | Method of link adaptation in enhanced cellular systems to discriminate between high and low variability |
| CN2696245Y (en) * | 2002-04-05 | 2005-04-27 | 交互数字技术公司 | Controller for servicing HS-DSCH packet accessing primary change |
| CN102638294A (en) * | 2012-05-02 | 2012-08-15 | 大唐移动通信设备有限公司 | Switching method and switching system of transmission mode in downlink multi-input and multi-output mode |
| CN103096255A (en) * | 2013-01-11 | 2013-05-08 | 大唐移动通信设备有限公司 | Broadcast news sending method and base station |
| CN103546244A (en) * | 2013-11-01 | 2014-01-29 | 武汉邮电科学研究院 | Adaptive modulation encoding method and device |
| CN105873101A (en) * | 2016-03-31 | 2016-08-17 | 武汉邮电科学研究院 | Self-adaption mode switching method and system based on MCS and bler |
-
2017
- 2017-05-27 CN CN201710388484.5A patent/CN106973411B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505880A (en) * | 2001-04-30 | 2004-06-16 | �ƶ��Ѷ��� | Method of link adaptation in enhanced cellular systems to discriminate between high and low variability |
| CN2696245Y (en) * | 2002-04-05 | 2005-04-27 | 交互数字技术公司 | Controller for servicing HS-DSCH packet accessing primary change |
| CN102638294A (en) * | 2012-05-02 | 2012-08-15 | 大唐移动通信设备有限公司 | Switching method and switching system of transmission mode in downlink multi-input and multi-output mode |
| CN103096255A (en) * | 2013-01-11 | 2013-05-08 | 大唐移动通信设备有限公司 | Broadcast news sending method and base station |
| CN103546244A (en) * | 2013-11-01 | 2014-01-29 | 武汉邮电科学研究院 | Adaptive modulation encoding method and device |
| CN105873101A (en) * | 2016-03-31 | 2016-08-17 | 武汉邮电科学研究院 | Self-adaption mode switching method and system based on MCS and bler |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483159A (en) * | 2017-09-20 | 2017-12-15 | 武汉虹信通信技术有限责任公司 | The AMC optimization methods of handoff procedure in a kind of LTE Rail Transit Systems |
| WO2019197027A1 (en) * | 2018-04-12 | 2019-10-17 | Nokia Technologies Oy | Methods and apparatuses for selective modulation and coding scheme (mcs) exclusion |
| CN114189317A (en) * | 2022-02-14 | 2022-03-15 | 北京宇航系统科技有限公司 | Method for realizing communication navigation remote sensing depth fusion |
| CN114189317B (en) * | 2022-02-14 | 2022-04-22 | 北京宇航系统科技有限公司 | Method for realizing communication navigation remote sensing depth fusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106973411B (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5108450B2 (en) | Wireless communication system, wireless communication method, base station, and wireless terminal | |
| CN101483918B (en) | Buffer condition report sending method and apparatus thereof | |
| RU2396719C2 (en) | Method for control of repeated transfer process | |
| CN100592817C (en) | A method and device for realizing the dynamic QoS control during the dispatching of HSUPA base station | |
| CN106973411A (en) | A kind of flow control methods in LTE system handoff procedure | |
| KR20150076220A (en) | Data transmission method, base station, and user equipment | |
| WO2017096936A1 (en) | Method and apparatus for evaluating voice service quality of terminal, and switching method and apparatus | |
| US10917817B2 (en) | Methods and apparatus for discarding packets in a wireless communication network | |
| US20120044875A1 (en) | Uplink Communications | |
| US20110274050A1 (en) | Wireless communication base station apparatus, wireless communication terminal device and wireless communication method | |
| CN104396307B (en) | Switching handling method, apparatus and system | |
| US10405240B2 (en) | Mobile communication system, wireless control station, wireless base station, mobile station, and mobile communication method | |
| US8774117B2 (en) | Terminal and grant processing method thereof | |
| US20090225699A1 (en) | Radio communication system, radio communication method, and base station | |
| JP2009201080A (en) | Radio communication system, radio communication method, and base station | |
| WO2016066013A1 (en) | Cqi adjusting and scheduling method and device | |
| US10542116B2 (en) | Communication device and method for processing received data | |
| CN107431940B (en) | Method and apparatus for controlling coverage of uplink in wireless communication system | |
| EP2911344A1 (en) | Method and device for dynamically adjusting waiting time of uplink macro diversity combining | |
| CN102300329B (en) | Method for determining downlink frequency selection scheduling resource and device | |
| EP2348772A4 (en) | Method and terminal for determining soft handover diversity thresholds | |
| CN112055414B (en) | Uplink service scheduling method and device | |
| CN109963343B (en) | Method and device for scheduling wireless resources | |
| US9191901B2 (en) | Radio base station and power control method | |
| JP2008072723A (en) | Method and apparatus for setting service grant in wireless communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co., Ltd Address before: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co., Ltd |