CN101562849A - Method for processing data stream in downlink business direct-cut operation - Google Patents

Method for processing data stream in downlink business direct-cut operation Download PDF

Info

Publication number
CN101562849A
CN101562849A CNA2008100917439A CN200810091743A CN101562849A CN 101562849 A CN101562849 A CN 101562849A CN A2008100917439 A CNA2008100917439 A CN A2008100917439A CN 200810091743 A CN200810091743 A CN 200810091743A CN 101562849 A CN101562849 A CN 101562849A
Authority
CN
China
Prior art keywords
terminal
message
data
target
receives
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
Application number
CNA2008100917439A
Other languages
Chinese (zh)
Other versions
CN101562849B (en
Inventor
孙奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
Original Assignee
Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Samsung Telecommunications Technology Research Co Ltd, Samsung Electronics Co Ltd filed Critical Beijing Samsung Telecommunications Technology Research Co Ltd
Priority to CN2008100917439A priority Critical patent/CN101562849B/en
Publication of CN101562849A publication Critical patent/CN101562849A/en
Application granted granted Critical
Publication of CN101562849B publication Critical patent/CN101562849B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The invention relates to a method for processing a data stream in down-link business direct-cut operation, including the steps: a serving base station determines that a terminal needs to be switched to a target base station, sends first information to the target base station, and breaks the linking with the terminal; the target base station generates and broadcasts second information according to the received first information; and the terminal determines the downlink data thereof according to the received second information and receives the subsequent down-link data. The method shortens the time of data interruption in a switching process, and reduces the problems of transmission delay, packet loss, and the like caused by data buffering.

Description

Data flow processing method in the downlink business direct-cut operation
Technical field
The present invention relates to mobile WiMAX system, particularly, relate in the direct-cut operation of a kind of real-time downlink business (VOD program request, VoIP etc.) processing method customer traffic.
Background technology
At present, in the direct-cut operation of mobile WiMAX system, when finishing switch decision, and discharge after the old link, terminal will be finished from down-going synchronous to a series of processes such as new sub-district accesses.Detailed process can comprise: with new DL synchronously and obtain parameter (synchronizewith new DL and obtain parameters), obtain UL parameter (obtain ULparameters), range finding and UL parameter adjustment (Ranging and UL parameteradjustment), MS re-authentication, register and rebulid service flow (MS reauthorization, Reregister and reestablish service flows).This process specifically as shown in Figure 4.
Before finishing above a series of process, because terminal is not upgraded CID (ConnectionIdentification, connection identifier), target BS can't be this MS allocation of downlink resource.This cause can only cache user data, wait for that new link establishment finishes, just can be forwarded to new serving BS, and user can't receive data during this.It is the interruption that the process of link re-establishment causes the terminal downlink data receiving.
For user data, traditional processing method is: network-caching user's downlink data, finish up to new link establishment; After terminal is finished the renewal of CID at new serving BS, transmit user data, be handed down to the user by new link connection again to new serving BS.But because real time business, when issuing data cached meeting overlapping with real time data, cause the user to receive the serious phenomenons that descend of service quality such as data time sequence mistake, packet loss is serious even can't handle and take place.Have at present a large amount of research at quick switching, reduce handover delay, but the problem that exists during to the real time business direct-cut operation not have the solution of getting well.
In sum, when carrying out direct-cut operation, how to reduce the data flow transmission time delay, reducing packet loss is the problem of needing solution badly.
Summary of the invention
At the problem of data interruption in the real-time downlink business direct-cut operation, a kind of minimizing subtrahend is proposed according to the flow transmission time delay, reduce the method for packet loss.
According to the present invention, the data flow processing method in a kind of downlink business switching has been proposed, comprise step:
Serving BS is determined and terminal will be switched to target BS, sends first message to target BS, and linking between disconnection and the terminal;
Target BS produces second message, and broadcasts described second message according to first message that receives;
Terminal determines to belong to the downlink data of himself according to second message that receives, and receives follow-up downlink data.
The present invention utilizes the Extended IE among the downlink broadcast message DL_MAP, is the downlink data resource that the terminal distribution of carrying out direct-cut operation can be used, and terminal receives that the indication of broadcast can receive descending real time business data.Thereby shortened the time of data interruption in the handoff procedure, reduced metadata cache and the propagation delay time that causes, problems such as packet loss.
Description of drawings
Fig. 1 shows the processing procedure according to data stream switching method of the present invention;
Fig. 2 shows Extended IE (extend information unit) form of the present invention's definition, is used for the user's allocation of downlink data resource to hand-off execution process;
Fig. 3 shows signaling and data flow comparison in the present invention and the prior art handoff procedure;
Fig. 4 shows the flow process according to prior art new link establishment in switching;
Fig. 5 shows the OFDMA DL-MAP IE format in the 802.16e agreement;
Fig. 6 shows the DL-MAP extended IE format in the 802.16e agreement;
Fig. 7 shows the Extended DIUC code in the 802.16e agreement.
Embodiment
Fig. 1 shows according to the present invention in handoff procedure the processing procedure to data flow.As shown in Figure 1, at step S11, serving BS (that is, the base station before terminal is switched) is determined the target BS that terminal need switch to, and with CID﹠amp; Information such as MAC Address send to target BS.
At step S12, carry out and switch, discharge the link between Current Serving BTS and the terminal.
At step S13, terminal sends user data by access service network gateway (ASN-GW) to target BS.
At step S14, target BS determines whether the user finishes in operations such as the registration of target BS and CID renewals.If then at step S17, utilize the CID that upgrades, so that send downlink data to user's allocation of downlink resource.Otherwise at step S16, the target BS utilization is according to expansion IE of the present invention, in the mode of broadcasting to user's allocation of downlink resource.Whether to one's name the mode that terminal combines with MAC Address by existing CID judges the downlink data that sent by target BS, if, then receive, otherwise, these data then refused.
Therefore, even terminal is not carried out uplink synchronous, when also not succeeding in registration,, then can receive the broadcast in the descending sub frame as long as finish down-going synchronous.
In the 802.16e_2007_D0 agreement, the format structure of the DL_MAP_IE of WirelessMAN_OFDMA PHY as shown in Figure 5.When having DIUC==15 during if DL_MAP is IE (down link MAP information unit), this IE represents specific information, its DL-MAP extended IE format structure and has also been made regulation to the usage of extended DIUC code as shown in Figure 6 in agreement, see Fig. 7.As seen the DIUC code of 09-0A and 0C-0E keeps, and can redefine.Here, the DL-MAPextended IE format among above-mentioned Fig. 6 is further expanded, the ExtendedIE format of definition as shown in Figure 2 according to the present invention.
Here, when switching terminal utilization broadcasting CID receives the extended IE information according to the present invention from target BS, switch in terminal and to receive that REG-RSP carries out before CID upgrades, terminal need keep the CID among the previous BS to communicate.For avoiding old CID to conflict with existing subscriber's CID in the target BS, the present invention utilizes the last 8+CID of terminal MAC Address to distinguish the user, and the user who has guaranteed thus only to be in when switching could downlink data receiving.
Fig. 3 show according to the present invention and the handoff procedure of prior art in signaling and data flow process relatively.
1) during the T0-T1
On the datum plane: BS#1<-MS between the normal downlink data that receives BS, the Data Stream Processing with traditional scheme is identical here.
On the signaling plane: MS at first carries out handover measurement, and sends MOB-MSHO-Req to BS#1.Interaction message between target BS BS#2, the BS#3 that BS#1 finds by backbone network and in the handover measurement stage.Here, except traditional bandwidth BW and Qos message, BS#1 also sends the CID among the BS#1 and the MAC Address of terminal MS to candidate target base station BS#2, BS#3, is used for distinguishing at Extended IE the ownership of user data.After the Signalling exchange, finally select BS#3, disconnect old link then as target BS.
2) T1 is during the T2
On the datum plane: because new link do not set up, and down-going synchronous do not finish, and Nei business datum needs buffer memory during this period of time, waits for that the down-going synchronous success transmits again.With respect to traditional scheme,, saved T1 and during T3, obtained UL parameter, range finding and UL parameter adjustment, MS re-authentication and registration process according to a time needs time T 1 to T2 of metadata cache of the present invention.
On the signaling plane: terminal is carried out down-going synchronous, and obtains the corresponding downstream channel parameter.
3) T2 is during the T3
On the datum plane: target BS BS#3 utilizes the CID+MAC address that sends from BS#1, is user's allocation of downlink data resource by Extended IE (its concrete definition format is seen figure two).Terminal receives the DL-IE MAP of broadcasting, finds the existence of Extended IE, and receives the data of being distributed by this IE.
On the signaling plane: terminal is carried out the adjustment of uplink synchronous, range finding and parameter, the mandate in BS#3, heavily registration and the steps such as renewal of CID.
On the contrary, T1 is during the T3, because terminal is not upgraded CID in traditional scheme, target BS can't be this MS allocation of downlink resource, cause user's data can only buffer memory to wait for that new link establishment finishes, just can be forwarded to new serving BS, and user can't receive data during this.
4) after the T3, the handoff procedure of terminal is finished, and BS#3 utilizes the CID that upgrades to send downlink data for the user.
As can be seen, as long as down-going synchronous success, user terminal can be judged one's own downlink data from MAC Address, need not carry out processes such as range finding in the general handoff procedure and uplink parameter adjustment, CID renewal, can receive descending real time business data.Thus, can find range, in the operations such as UL parameter update, MS re-authentication, receive downlink data, thereby shortened the time of data interruption in the handoff procedure, reduced metadata cache and problem such as the propagation delay time that causes, packet loss from target BS.
Although the present invention is described according to described embodiment, it is pointed out that these embodiment are used for explaining, rather than be used for the present invention is limited.Those of ordinary skill in the art can be easy to these embodiment are changed, increase, delete any step and do not break away from the spirit and scope of the present invention.

Claims (5)

1. the data flow processing method during a downlink business switches comprises step:
Serving BS is determined and terminal will be switched to target BS, sends first message to target BS, and linking between disconnection and the terminal;
Target BS produces second message, and broadcasts described second message according to first message that receives;
Terminal determines to belong to the downlink data of himself according to second message that receives, and receives follow-up downlink data.
2. method according to claim 1, wherein, described first message comprises the connection identifier and the medium access control MAC Address of terminal.
3. method according to claim 2, wherein, described second message is the DL MAP information unit of expansion, comprises the MAC Address of terminal.
4. method according to claim 1, wherein, terminal receives described second message after finishing down-going synchronous.
5. method according to claim 1, wherein, terminal is finished with the connection identifiers CID of target BS and is upgraded in downlink data receiving.
CN2008100917439A 2008-04-14 2008-04-14 Method for processing data stream in downlink business direct-cut operation Expired - Fee Related CN101562849B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008100917439A CN101562849B (en) 2008-04-14 2008-04-14 Method for processing data stream in downlink business direct-cut operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008100917439A CN101562849B (en) 2008-04-14 2008-04-14 Method for processing data stream in downlink business direct-cut operation

Publications (2)

Publication Number Publication Date
CN101562849A true CN101562849A (en) 2009-10-21
CN101562849B CN101562849B (en) 2012-07-18

Family

ID=41221419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008100917439A Expired - Fee Related CN101562849B (en) 2008-04-14 2008-04-14 Method for processing data stream in downlink business direct-cut operation

Country Status (1)

Country Link
CN (1) CN101562849B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015161475A1 (en) * 2014-04-24 2015-10-29 Intel IP Corporation Connection identifier for high-efficiency wireless networks
WO2017004773A1 (en) * 2015-07-06 2017-01-12 华为技术有限公司 Communication method and communication apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015161475A1 (en) * 2014-04-24 2015-10-29 Intel IP Corporation Connection identifier for high-efficiency wireless networks
TWI577224B (en) * 2014-04-24 2017-04-01 英特爾Ip公司 Connection identifier for high-efficiency wireless networks
WO2017004773A1 (en) * 2015-07-06 2017-01-12 华为技术有限公司 Communication method and communication apparatus

Also Published As

Publication number Publication date
CN101562849B (en) 2012-07-18

Similar Documents

Publication Publication Date Title
KR101684699B1 (en) Method for communicating in mobile telecommunication network and system therefor
CN101151936B (en) Switch method
CN101040463B (en) Hand-off system and method of dual mode mobile for connecting mobile communication system and wireless lan
CN103079243B (en) Network handover process method and device
US8412199B2 (en) Method and apparatus decreasing handover latency in heterogeneous networks
CN102474776B (en) Improved neighbor information update in a cellular system
CN100596228C (en) Method for terminal switching between heterogeneous network
JP5740672B2 (en) Telecommunication system and telecommunication method
JP4939529B2 (en) Hard handoff procedure for dedicated and fast shared channels
CN102111722B (en) Group calling service rapid-continuing method
CN103096294A (en) Distribution method, device and system for controlling tunnel identifiers
JP2001036941A (en) Method for quickly changing cell in packet exchange cellular radio system and device therefor
KR20090055668A (en) Mobile communication system and its method for tunnel management
CA2376004A1 (en) Method of handing over mobile stations in a general packet radio service (gprs) radio telecommunications network
CN101291535A (en) Method and system for terminal to switch among different networks
US20110075632A1 (en) Heterogeneous communication system and method for circuit switched handover
US20080014968A1 (en) Apparatus and method for providing location information in mobile communication system
KR20100053418A (en) Method of performing handover for emergency call in wireless communication system
US20110317668A1 (en) Method and System for Implementing Inter-Access Networks Handoff in Active State in HRPD Network
CN101494852A (en) Method and apparatus for distributing identification list of tracking zone in switching process
US8046006B2 (en) Method for carrying out paging in a cellular mobile communication system
CN101562849B (en) Method for processing data stream in downlink business direct-cut operation
CN101170793A (en) An inter-BSS packet exchange and switching method, system and a SGSN
CN101163323B (en) Method of implementing fast base station switch in broadband wireless system
CN116055925A (en) Terminal roaming method and system in passive optical network system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120718

Termination date: 20130414