CN103298025A - Method of reporting link failure - Google Patents
Method of reporting link failure Download PDFInfo
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- CN103298025A CN103298025A CN2012101129311A CN201210112931A CN103298025A CN 103298025 A CN103298025 A CN 103298025A CN 2012101129311 A CN2012101129311 A CN 2012101129311A CN 201210112931 A CN201210112931 A CN 201210112931A CN 103298025 A CN103298025 A CN 103298025A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005457 optimization Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 8
- 101150116940 AGPS gene Proteins 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method of reporting link failure. If a new link is established between a user equipment and a serving base station after a previous link failure, the user equipment is configured to report information associated with the previous link failure, including UE mobility information during the previous link, information related to transmitting/receiving the RRC connection reconfiguration, or information related to radio link failure. The serving base station is configured to perform mobility optimization in the minimization of drive test accordingly for improving handover success rate and overall network efficiency.
Description
Technical field
The present invention relates to a kind of method that links failure of repaying, particularly link failure in minimum transmission test, to move the method for optimization relevant for a kind of the repayment.
Background technology
Third generation partner program (the 3rd Generation Partnership Project, the wireless communication system of 3GPP) formulating adopts Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA) technology can provide the multi-medium data transmission of height spectrum utilization efficiency, borderless coverage rate and high-quality, two-forty.Global mobile communication (Global System for Mobile communications, GSM) (the Universal Terrestrial Radio Access Network of global terrestrial radio access network in, E-UTRAN) can be considered a radio access network, wherein network terminal includes a plurality of base station (Node-B, NB), be used for that (User Equipment UE) communicates with a plurality of subscriber equipmenies with Households end.In addition, in order to improve umts, 3GPP formulates Long Term Evolution further, and (Long Term Evolution, LTE) system is to satisfy the demand that the user increases day by day.Long evolving system is regarded as providing high data transmission rate, low latent time, package optimization and improve power system capacity and a kind of new wave point and the wireless network architecture of coverage, include by a plurality of evolved base station (evolved Node-B, eNB) evolution whole world terrestrial radio access network (Evolved Universal Terre strial Radio Access Network, E-UTRAN), its on the one hand in order to communicate with the Households end, on the other hand in order to handle non-level of access (Non-access Stratum, NAS) Kong Zhi core net (Core Network, CN) communicate, and core network comprises servo gateway (Serving Gateway) and mobile management entity (Mobility Management Entity, MME) device such as grade.
Where no matter be in order to use Households to hold, all can be subjected to disconnected words or believing under the serious influence that decays of No. to receive service, wireless communication system suitably cloth is built the base station, to provide with the seamless and the second best in quality covering scope of Households end.Therefore, the operator of wireless communication system must spend suitable manpower and material resources measure in the letter No. quality of carrying out the base station, and building the preceding of base station at cloth could be optimized and plan according to measurement earlier.Carrying out the mode that measures has many kinds, for example measures intensity and/or the quality of believing No. in different time and geographical position.The practice of less expensive is to measure by bringing in execution with Households in the wireless communication system, and the passback measurement is to the base station, so that the operator to be provided required measurement.Change, when a large amount of the execution with the Households end measures and passback measurement during to the base station, the operator can use these measurements to carry out optimization and planning that base station cloth is built, and then reduces and measure required manpower and material resources.Therefore, defined minimum transmission test (minimization of drive test in the 3GPP standard, MDT), its main purpose is for carrying out coverage optimization (coverage optimization), mobile optimization (mobility optimization), capacity optimization (capacity optimization), and service quality (Quality of Service, QoS) checking.Complete communication specification needs many people's general debate, works out and constantly revises, and the MDT that existing 3GPP standard does not relate to the LTE system as yet moves optimization.
Summary of the invention
Because above-mentioned prior art problems the invention provides a kind of method that links failure of repaying, optimize to provide mobile at minimum transmission test.
For reaching above-mentioned purpose, the invention provides a kind of method that links failure of repaying, it is included in one first binding and has no progeny, and rebulids one second and link between a subscriber equipment and a base station; One mobile message of this subscriber equipment repayment this subscriber equipment during this first binding is to this base station; And this base station carries out moving optimization according to this mobile message in a minimum transmission test.
Advantage of the present invention is to improve handing-over success rate and network whole efficiency.
Description of drawings
Fig. 1 is a kind of flow chart that links the failure method of repaying among the present invention.
Wherein, description of reference numerals is as follows:
110～160 steps
Embodiment
Handing-over (handover) refers to the administrative power of subscriber equipment is converted to the program of an adjacent objects base station (target cell) from having source base station (serving cell) now, makes that the subscriber equipment in moving can be kept ongoing data or communication link.According to the 3GPP standard, handover procedure can be divided into 4 big steps:
(1) subscriber equipment transmits measurement report (measurement report), comes source base station to judge whether to start the handover procedure of subscriber equipment.
(2) (Radio Resource Control Connection Reconfiguration, RRC Connection Reconfiguration) reshuffled in the Radio Resource control binding of subscriber equipment receiving target base station passback, to prepare to carry out handover procedure.
(3) (Random Access Channel, RACH) program is synchronous so that target BS is obtained uplink for subscriber equipment execution Random Access Channel.
(4) after finishing synchronously, subscriber equipment transmits the information that the RRC binding is reshuffled of finishing.
At the subscriber equipment in the wireless communication system and a base station, the invention provides a kind of method that links failure of repaying, can in MDT, move optimization.In the present invention, wireless communication system can be a umts or a long evolving system, and it is made up of a network terminal and usefulness Households end briefly.In umts, network terminal can be a global terrestrial radio access network, and it can include a plurality of base stations.In long evolving system, network terminal can be evolution whole world terrestrial radio access network, and it can include a plurality of evolved base station.Can be one or more subscriber equipmenies such as mobile phone, mobile computer, flat computer, e-book and portable computer system with the Households end.Yet above-mentioned only is embodiments of the invention, does not limit category of the present invention.
The flowchart text of Fig. 1 a kind of method that links failure of repaying among the present invention, it comprises the following step:
Step 110: in one first links, have no progeny, between a subscriber equipment and a base station, rebulid one second and link; Execution in step 120.
Step 120: the mobile message of subscriber equipment repayment subscriber equipment during first binding, execution in step 130.
Step 130: judge that whether receiving first that a RRC links during linking reshuffles: if, execution in step 140; If not, execution in step 150.
Step 140: the subscriber equipment repayment is relevant to during first binding and transmits or receive the first information that the RRC binding is reshuffled: execution in step 160.
Step 150: the subscriber equipment repayment is relevant to wireless link failure (Radio Link Failure, one second information RLF): carry out during first binding
Step 160: optimization is moved according to the information of subscriber equipment repayment in the base station in MDT.
In the step 110, first links interruption source may be because handing-over failure or wireless link failure.When carrying out handover procedure, the base station can (over-the-air, OTA) technology be reshuffled the RRC binding and is sent to subscriber equipment with aerial download.If the base station sends the RRC binding too late and reshuffles (for example may be to cause because the position of subscriber equipment own or speed change to some extent), it is synchronous to obtain uplink that subscriber equipment can't be finished the RACH program in the given time, therefore can cause the handing-over failure.On the other hand, disturb letter No. transmission if background environment changes to some extent, subscriber equipment possibly can't receive the RRC binding of base station transmission smoothly and reshuffle, and then causes the wireless link failure.Therefore, have no progeny in first links, meeting of the present invention rebulids second and links between subscriber equipment and base station.
In step 120, after successfully setting up second binding, subscriber equipment can be repaid the mobile message of subscriber equipment during first binding.In an embodiment of the present invention, mobile message can be first and links a subscriber equipment mobile status, the subscriber equipment mobile status variation that measurement period arrives, or the subscriber equipment speed when the subscriber equipment mobile status changes.
Embodiment at the subscriber equipment mobile status, subscriber equipment can link Reference Signal Received Power (the Reference Signal Received Power that measurement period is come source base station and target BS first, RSRP) or with reference to the letter No. quality of reception (Reference Signal Received Quality, RSRQ), and be high-mobility state (high-mobility state) according to deciding mobile message at the number of times of scheduled time inner cell gravity treatment (cell re-selection), middle mobile status (medium-mobility state), or low mobile status (low-mobility state).
At the embodiment that the subscriber equipment mobile status changes, subscriber equipment can be in change in location or the timing variations of first its mobile status of binding measurement period.For example by independent (standalone) global positioning system (Global System, GPS)/GLONASS (Global Navigation Satellite System) (Global Navigation Satellite System, GNSS), agps system (assisted GPS)/assisted global navigational satellite system (assisted GNSS), location-based service (Location Services, LCS) location, or secure user plane location (Secure User Plane Location, SUPL) technology such as location is come the change in location that links measurement period subscriber equipment mobile status first.Or at first binding measurement period single frequency network (the Single-Frequency Network, SFN) the number of transmissions or OFDM (Orthogonal frequency-division multiplexing, OFDM) number of times is obtained the timing variations of subscriber equipment mobile status.
The embodiment of subscriber equipment speed when changing at the subscriber equipment mobile status, subscriber equipment can be by independent global positioning system/GLONASS (Global Navigation Satellite System), agps system/assisted global navigational satellite system, location-based service location, or technology such as secure user plane location location, come subscriber equipment speed when first links measurement period.
In step 130, subscriber equipment judges that whether receiving first that RRC links during linking reshuffles.Reshuffle if receive the RRC binding, representing the first binding interruption is that the present invention can follow execution in step 140 because handing-over is failed; Do not reshuffle if receive the RRC binding, representing the first binding interruption is that the present invention can follow execution in step 150 because of the wireless link failure.
According to the 3GPP standard, the RRC binding is reshuffled to comprise and is carried out the required mobile control data (mobilityControlInfo) of handover procedure, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network Temporary Identifier for example, C-RNTI), safe computing sign (security algorithm identifier) and the system data block of target BS (system information block, SIB), RACH prior value parameters such as (preamble).The base station can be transmitted the RRC binding with a specific RACH power and be reshuffled.Subscriber equipment links and can start a timer T304 after reshuffling receiving RRC, and is stopping timer T304 synchronously to target BS by RACH.
In step 140, subscriber equipment can be repaid to be relevant to during first binding and transmit or receive the first information that the RRC binding is reshuffled.In an embodiment of the present invention, subscriber equipment can be repaid timer T304 in step 140 beginning/expired sequential, timer T304 begin/position or the speed of subscriber equipment when expired, or network terminal links a maximum RACH power when reshuffling transmitting RRC.Yet above-mentioned only is embodiments of the invention, does not limit category of the present invention.
According to the 3GPP standard, and wireless transmission and receiving element (Wireless Transmit/Receive Unit, the WTRU) binding between meeting supervisory user equipment and the base station, and when judging the wireless link failure, carry out a repair procedure.Wireless transmission and receiving element can be monitored a specific transmission carrier, and detecting letter No. indicates (in-sync indication) and the letter asynchronous indication of No. (out-of-sync indication) synchronously.After the asynchronous indication of letter No. of receiving a pre-determined number, timer T310 can be activated, if do not receive that before timer T310 is expired the letter No. of a pre-determined number indicates synchronously, can judge the wireless link failure this moment.On the other hand, when the medium access control (Media Access Control MAC) informs that generation reads problem at random, or wireless link control (Radio Link Control RCL) informs that number of retransmissions has reached in limited time, also can judge that wireless link fails this moment.
In step 150, subscriber equipment can be repaid second information that is relevant to the wireless link failure during first binding.In an embodiment of the present invention, subscriber equipment can be repaid beginning/expired sequential, the MAC problem of timer T310, or the RLC problem.Yet above-mentioned only is embodiments of the invention, does not limit category of the present invention.
In step 160, optimization can be moved according to the information of subscriber equipment repayment in the base station in MDT, for example adjust network parameter at the zone of coverage rate deficiency, or adjust the time that the RRC binding is reshuffled that sends at the different mobile statuss of subscriber equipment.
In the present invention, in last time linking, have no progeny, if can between subscriber equipment and base station, rebulid new binding, subscriber equipment can repay be relevant to last time link failure information to the base station, for example repay subscriber equipment during last time linking mobile message, be relevant to and transmit or receive RRC and link the information of reshuffling, or in the information that is being relevant to the wireless link failure.Therefore, the base station can provide mobile at MDT according to this to be optimized, and then improves handing-over success rate and network whole efficiency.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. repay the method that links failure for one kind, it is characterized in that, comprise:
In one first links, have no progeny, between a subscriber equipment and a base station, rebulid one second and link;
One mobile message of this subscriber equipment repayment this subscriber equipment during this first binding is to this base station; And
This base station carries out moving optimization according to this mobile message in a minimum transmission test.
2. the method for claim 1, it is characterized in that, this mobile message is included in the subscriber equipment mobile status, the subscriber equipment mobile status that measure during this first binding to be changed, or the subscriber equipment speed when this subscriber equipment mobile status changes.
3. method as claimed in claim 2 is characterized in that, other comprises:
Measuring one during this first binding comes a Reference Signal Received Power or of source base station and a target BS with reference to the letter No. quality of reception; And
Deciding this mobile message according to the number of times in scheduled time inner cell gravity treatment is mobile status or a low mobile status in the high-mobility state.
4. method as claimed in claim 2 is characterized in that, other comprises:
By an independent global positioning system, an independent GLONASS (Global Navigation Satellite System), an agps system, an assisted global navigational satellite system, location-based service location, or a secure user plane location location, come to change so that this subscriber equipment mobile status to be provided in this first change in location of measuring this mobile device during linking.
5. method as claimed in claim 2 is characterized in that, other comprises:
First measure a single frequency network the number of transmissions or an OFDM number of times during linking and obtain a sequential of this mobile device and change to provide this subscriber equipment mobile status to change at this.
6. method as claimed in claim 2 is characterized in that, other comprises:
By an independent global positioning system, an independent GLONASS (Global Navigation Satellite System), an agps system, an assisted global navigational satellite system, location-based service location, or a secure user plane location locatees to obtain this subscriber equipment speed.
7. the method for claim 1 is characterized in that, other comprises:
When judgement receives that Radio Resource control binding is reshuffled during this first binding, the repayment of this subscriber equipment first is relevant to during linking and transmits or receive this Radio Resource control and link a first information of reshuffling at this, and wherein this base station is carried out this according to this first information in addition and moved optimization in this minimum transmission test.
8. method as claimed in claim 7, it is characterized in that, beginning/expired sequential, this timer that this first information comprises a timer begin/position or a speed of this subscriber equipment when expired, or transmitting this Radio Resource control links a largest random access path power of reshuffling.
9. the method for claim 1 is characterized in that, other comprises:
When judgement does not receive that Radio Resource control binding is reshuffled during this first binding, this subscriber equipment repayment is relevant to one second information of wireless link failure during this first binding, wherein this base station provides mobile optimization according to this second information in addition in this minimum transmission test.
10. method as claimed in claim 9 is characterized in that, this second information comprises beginning/expired sequential, a medium access control problem of device when certain, or a wireless link control problem.
11. the method for claim 1 is characterized in that, other comprises:
When judgement received that Radio Resource control binding is reshuffled during this first binding, this subscriber equipment repayment was relevant to transmission or receives the first information that this Radio Resource control binding is reshuffled during this first binding; And
When judgement does not receive that during this first binding this Radio Resource control binding is reshuffled, this subscriber equipment repayment is relevant to one second information of wireless link failure during this first binding, wherein this base station provides to move in this minimum transmission test according to this first information and this second information in addition and optimizes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261602087P | 2012-02-23 | 2012-02-23 | |
| US61/602,087 | 2012-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103298025A true CN103298025A (en) | 2013-09-11 |
| CN103298025B CN103298025B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210112931.1A Expired - Fee Related CN103298025B (en) | 2012-02-23 | 2012-04-17 | Return links failed method |
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| CN (1) | CN103298025B (en) |
| TW (1) | TWI493990B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011097728A1 (en) * | 2010-02-12 | 2011-08-18 | Research In Motion Limited | Methods and apparatus to perform measurements |
| WO2011138494A1 (en) * | 2010-05-06 | 2011-11-10 | Nokia Corporation | Apparatus and method to control the collection of measurement data in a communication system |
| WO2012021614A1 (en) * | 2010-08-13 | 2012-02-16 | Research In Motion Limited | Methods and apparatus to activate location measurements |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860062B (en) * | 2010-02-12 | 2016-12-21 | 黑莓有限公司 | The method and apparatus performing to measure |
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2012
- 2012-03-27 TW TW101110545A patent/TWI493990B/en active
- 2012-04-17 CN CN201210112931.1A patent/CN103298025B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011097728A1 (en) * | 2010-02-12 | 2011-08-18 | Research In Motion Limited | Methods and apparatus to perform measurements |
| WO2011138494A1 (en) * | 2010-05-06 | 2011-11-10 | Nokia Corporation | Apparatus and method to control the collection of measurement data in a communication system |
| WO2012021614A1 (en) * | 2010-08-13 | 2012-02-16 | Research In Motion Limited | Methods and apparatus to activate location measurements |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI493990B (en) | 2015-07-21 |
| CN103298025B (en) | 2016-05-25 |
| TW201336329A (en) | 2013-09-01 |
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Granted publication date: 20160525 |