CN1996912A - Switching method of the user device in the long evolving network - Google Patents
Switching method of the user device in the long evolving network Download PDFInfo
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- CN1996912A CN1996912A CN 200610005621 CN200610005621A CN1996912A CN 1996912 A CN1996912 A CN 1996912A CN 200610005621 CN200610005621 CN 200610005621 CN 200610005621 A CN200610005621 A CN 200610005621A CN 1996912 A CN1996912 A CN 1996912A
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Abstract
This invention relates to moiled communication technique and discloses one long progress network user device switch method to make the switch double program mechanism timely ended to reduce system materials occupancy. This invention adds one timer mechanism and if the use time is super than preset time length then the network gate point ends this play automatically.
Description
Technical field
The present invention relates to mobile communication technology, particularly method for user device switching in the long-term evolving network.
Background technology
Mobile communication technology entered since the second generation mobile communication (The Second Generation is called for short " 2G ") from 20 end of the centurys, had obtained developing rapidly.But along with the increase of number of users, and to the improving constantly of requirements such as class of business and performance, 2G demonstrates the restriction at aspects such as data transmission capabilities gradually.Therefore, the 3G (Third Generation) Moblie that data transmission capabilities is stronger (The Third Generation, be called for short " 3G ") has entered the high speed development stage, and moving communicating field presents by 2G progressively to the situation of 3G transition.
When the 3G system progressively entered commercialization, industry had begun Research on New work.The company that has is called super 3G (Super 3G) technology with these new technologies, and the company that also has is referred to as the 3.9G technology.3.9G the data traffic transmission speed of technology will reach about 100Mbps, and introduce a large amount of advanced technologies, as OFDM (Orthogonal Frequency Division Multiplexing, be called for short " OFDM ") and multiple-input and multiple-output (Multiple Input Multiple Output, be called for short " MIMO ") etc., unification is called the evolved technology of 3G with these advanced technologies in China, also is the E3G technology.
In order to realize the standardization of E3G technology, since the end of the year in 2004, third generation partner program (3rd Generation Partnership Project is called for short " 3GPP ") and 3GPP2 successively began corresponding research work.
Along with high speed downlink packet inserts (High Speed Downlink Packet Access, be called for short " HSDPA "), the introducing of enhanced uplink enhancement techniques such as (Enhanced Uplink), the 3GPP wireless access technology is that very high competitiveness is arranged in a few years from now on.Yet in order to guarantee the competitiveness of more longer time (as 10 years or longer), 3GPP started Long Term Evolution (Long Term Evolution is called for short " LTE ") project since the second half year in 2004.
In order to support the mixed networking of 2G in the evolution process of 3G, circuit commutative field at mobile communication system, 3G standard universal mobile telecommunications system (Universal Mobile TelecommunicationsSystem, be called for short " UMTS ") stipulated the basic configuration of the public land mobile net (Public Land Mobile Networks is called for short " PLMN ") of support circuit-switched territory and grouping commutative field service and interface.
Stack up is said, the UMTS system is by subscriber equipment (User Equipment, abbreviation " UE "), universal mobile telecommunications system grounding wireless access network (UMTS Terrestrial Radio Access Network, be called for short " UTRAN ") and core net (Core Network is called for short " CN ") composition.
The RNS (Radio NetworkSubsystem is called for short " RNS ") that comprises many CN of being connected among the UTRAN again.A RNS comprises a radio network controller (Radio NetworkController is called for short " RNC ") and one or more base station (NodeB), and each NodeB covers one or more sub-districts.
In the evolution process of LTE, the network configuration of three node layers of NodeB, RNC and CN is simplified to the structure of two-layer node, the RNC function is split to NodeB, is called among the NodeB (also being eNodeB) and the upper level node such as gateway (Gateway, abbreviation " GW ") of evolution.
In the evolvement network in future, the business of how different demands will be provided, for some special real time business wherein,, need satisfy the requirement of low packet loss ratio such as visual telephone (Video Phone) etc.Simultaneously in the discussion of evolvement network, because the utilization of shared channel makes soft handover be cancelled.Therefore, the data interruption of bringing at direct-cut operation or the problems such as time of interruption, some companies have proposed the scheme of some solutions, such as data forwarding (Data Forwarding) or bi-casting (two broadcasting) etc.But because the characteristic of real time business and non-real-time service is different, its requirement is also inequality.For example, for non-real-time service, the harmless handover scheme of Data Forwarding can well be finished its demand; But for real time business, can not satisfy its demand the break period in the Data Forwarding scheme, can only develop new solution.
In UMTS R6 system, hard handover scheme does not have Data Forwarding or twoly broadcasts the auxiliary of scheme, can cause certain loss of data or interrupt time delay, when striding the switching of RNC, Radio Link control (the Radio Link Control of receiving terminal, abbreviation " RLC ") entity can be reset, and parameter will be refreshed.
In the existing LTE scheme discuss, utilize two that the RLC function proposes on the basis of GW to broadcast scheme as shown in Figure 1, wherein, GW is called Centroid (or Anchor) again.
In actual applications, there is following problem in such scheme: system resource might be wasted.
Cause the main cause of this situation to be, finish or switch failure information notifies Centroid to finish two mechanism of broadcasting, make and twoly broadcast mechanism and can not in time finish, cause resource waste because the destination node that need to switch sends to switch.
Summary of the invention
In view of this, main purpose of the present invention is to provide method for user device switching in a kind of long-term evolving network, makes that switching two mechanism of broadcasting of using can in time finish to reduce taking system resource.
For achieving the above object, the invention provides method for user device switching in a kind of long-term evolving network, comprise following steps:
When A switched, the gateway node startup is two broadcast mechanism, starts timing mechanism simultaneously;
If the described gateway node of B is received to switch before described timing mechanism is overtime and finished or switch failure information, then stop described pair and broadcast mechanism and discharge respective resources, and stop timer;
If the described timing mechanism of C is overtime, then described gateway node stops described pair and broadcasts mechanism and discharge respective resources.
Wherein, broadcast the machine-processed downlink data that needs are issued subscriber equipment in the switching simultaneously at least two enode bs transmissions for described pair, these enode bs are the source enode b of this time switching and possible target enode b.
In this external described method, described steps A further comprises following substep:
The source enode b carries out handover decisions according to the measurement report from subscriber equipment, if the result of decision for switching, then this source enode b is to target enode b transmission handover preparation request;
After described target enode b is received handover preparation request, set up user plane, and send indication to described gateway node after user plane foundation is finished, expression user face is set up and is finished;
After described gateway node was received described indication, startup is two broadcast mechanism, starts described timing mechanism simultaneously.
In this external described method, described timing mechanism is realized by timer.
In this external described method, the duration of described timing mechanism according between processing delay, gateway node and each enode b of the processing delay of the processing delay of gateway node, subscriber equipment, each enode b between propagation delay time and each enode b and the subscriber equipment propagation delay time set.
By relatively can finding that the main distinction of technical scheme of the present invention and prior art is, has increased a timing mechanism,, then initiatively finish this pair and broadcast by gateway node if twoly in switching broadcast times that mechanism uses above scheduled duration.
Difference on this technical scheme, brought comparatively significantly beneficial effect, even promptly because the communication line failure and other reasons causes switching to be finished or switch failure information can't arrive gateway node, twoly broadcast operation and also can in time finish, when guaranteeing seamless switching, reduced two operation taking of broadcasting system resource.
Description of drawings
Fig. 1 is a UE changing method schematic diagram in the LTE network in the prior art;
Fig. 2 is according to UE changing method flow chart in the LTE network of first embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is directed to and in the LTE network, utilize two mechanism of broadcasting to realize seamless this mode of switching flow, propose to adopt two methods of broadcasting operation timer to be set twoly to broadcast mechanism and can effectively be carried out guaranteeing, can in the switching of the real time business of LTE network or non-real-time service, use.
The UE changing method as shown in Figure 2 in the LTE network of first embodiment of the invention.
In step 201, UE sends measurement report to source eNodeB.
In step 202, source eNodeB is according to carrying out handover decisions from the measurement report of subscriber equipment, if the result of decision for switching, then this source eNodeB sends handover preparation request to target eNode B.
In step 203, after target eNode B is received handover preparation request, set up user plane (UserPlane), and after user plane foundation is finished, send two indications of broadcasting to GW.
In step 204, GW receive two broadcast indication after, start and twoly broadcast mechanism, start timer simultaneously.Timing length is according to propagation delay time between processing delay, GW and each eNodeB of the processing delay of the processing delay of GW, UE, each eNodeB, and propagation delay time is set between eNodeB and the UE.
According to two mechanism of broadcasting, GW sends to target eNode B with the downlink data of UE.
In step 205, GW also sends to source eNodeB with the downlink data of UE simultaneously.Before timer expiry,, then stop twoly broadcasting mechanism and discharging respective resources if GW receives that switching that target eNode B is returned is finished or the message of handoff failure; Otherwise, in case timer expiry, even because the communication line failure and other reasons causes switching to be finished or switch failure information can't arrive gateway node, GW stops two broadcast mechanism and discharging respective resources too, broadcasting operation for feasible pair can in time finish, and has reduced two operation taking system resource of broadcasting when guaranteeing seamless switching.
Need to prove that Fig. 2 is a logical schematic, between source eNodeB wherein and the purpose eNodeB direct physical connection can be arranged, and also can not have direct physical connection, but transmits by GW.In general, there is direct physical to connect between GW and each eNodeB.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (5)
1. method for user device switching in the long-term evolving network is characterized in that, comprises following steps:
When A switched, the gateway node startup is two broadcast mechanism, starts timing mechanism simultaneously;
If the described gateway node of B is received to switch before described timing mechanism is overtime and finished or switch failure information, then stop described pair and broadcast mechanism and discharge respective resources, and stop timing mechanism;
If the described timing mechanism of C is overtime, then described gateway node stops described pair and broadcasts mechanism and discharge respective resources.
2. method for user device switching in the long-term evolving network according to claim 1, it is characterized in that, broadcast the machine-processed downlink data that needs are issued subscriber equipment in the switching simultaneously at least two enode bs transmissions for described pair, these enode bs are the source enode b of this time switching and possible target enode b.
3. method for user device switching in the long-term evolving network according to claim 1 is characterized in that, described steps A further comprises following substep:
The source enode b carries out handover decisions according to the measurement report from subscriber equipment, if the result of decision for switching, then this source enode b is to target enode b transmission handover preparation request;
After described target enode b is received handover preparation request, set up user plane, and send indication to described gateway node after user plane foundation is finished, expression user face is set up and is finished;
After described gateway node was received described indication, startup is two broadcast mechanism, starts described timing mechanism simultaneously.
4. method for user device switching in the long-term evolving network according to claim 1 is characterized in that described timing mechanism is realized by timer.
5. according to method for user device switching in each described long-term evolving network in the claim 1 to 4, it is characterized in that, the duration of described timing mechanism according between processing delay, gateway node and each enode b of the processing delay of the processing delay of gateway node, subscriber equipment, each enode b between propagation delay time and each enode b and the subscriber equipment propagation delay time set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200610005621 CN1996912A (en) | 2006-01-03 | 2006-01-03 | Switching method of the user device in the long evolving network |
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| CN 200610005621 CN1996912A (en) | 2006-01-03 | 2006-01-03 | Switching method of the user device in the long evolving network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075717A1 (en) * | 2008-12-31 | 2010-07-08 | 华为技术有限公司 | Method and device for users' uplink and downlink unsynchronized switching |
| WO2010078684A1 (en) * | 2008-12-30 | 2010-07-15 | 中兴通讯股份有限公司 | Initial security activation processing method and terminal thereof |
| CN101772166B (en) * | 2008-12-31 | 2012-06-06 | 中兴通讯股份有限公司 | Method for processing service release failure in LTE communication system |
| CN101505508B (en) * | 2008-02-04 | 2013-11-13 | 阿尔卡泰尔卢森特公司 | Method and apparatus for radio link failure recovery in a wireless communications network |
-
2006
- 2006-01-03 CN CN 200610005621 patent/CN1996912A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505508B (en) * | 2008-02-04 | 2013-11-13 | 阿尔卡泰尔卢森特公司 | Method and apparatus for radio link failure recovery in a wireless communications network |
| WO2010078684A1 (en) * | 2008-12-30 | 2010-07-15 | 中兴通讯股份有限公司 | Initial security activation processing method and terminal thereof |
| WO2010075717A1 (en) * | 2008-12-31 | 2010-07-08 | 华为技术有限公司 | Method and device for users' uplink and downlink unsynchronized switching |
| CN101772166B (en) * | 2008-12-31 | 2012-06-06 | 中兴通讯股份有限公司 | Method for processing service release failure in LTE communication system |
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