CN100508455C - Method for improving packet transmitting performance - Google Patents
Method for improving packet transmitting performance Download PDFInfo
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- CN100508455C CN100508455C CNB2006100727257A CN200610072725A CN100508455C CN 100508455 C CN100508455 C CN 100508455C CN B2006100727257 A CNB2006100727257 A CN B2006100727257A CN 200610072725 A CN200610072725 A CN 200610072725A CN 100508455 C CN100508455 C CN 100508455C
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- downlink
- data packet
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Abstract
The invention is concerned with the method to improve the grouping operation transmission in grouping operation transmission system that needs to set up the upload transmission channel before the grouping operation transmission start and sets up the down grouping operation transmission channel. It includes: the network side sets up a down physical connection with the terminal before ensuring the need of sending the down data packet to the terminal; when after the network side ensures the need of send the down data packet to the terminal, sends the down data packet through the down physical connection directly. It is: sends the down data packet through the found down physical channel directly when the down data packet comes. Therefore, it can reduce the time waiting on the down data packet and reduce the time delay in the transmission.
Description
Technical field
The present invention relates to packet data transmission technique, be meant a kind of method that improves packet transmitting performance especially.
Background technology
In global mobile communication (GSM) system, in order to realize transmission of packet data, be necessary for this transmission and distribute physical connection, the physical connection here is by temporary up-link block flow (TemporaryBlock Flow, form performance TBF).TBF is the physical connection that two equities prepare to receive (RR) inter-entity, in order to support the transmitted in both directions of logic link control protocol data cell (LLC PDU) on the grouping physical channel.Particularly, if carry out transmitting uplink data, promptly terminal to network just must be set up up TBF.Accordingly, if carry out downlink data transmission, promptly descending TBF just must be set up to terminal in the networking.
The foundation of TBF is finished by Signalling exchange by terminal and network.Just, if terminal will send the upstream data bag to network, then must cross the foundation that Signalling exchange is finished up TBF by first calcaneus rete ruton, only after up TBF set up, terminal could send the upstream data bag on the up TBF that sets up.Up TBF sets up and is controlled by terminal.Accordingly, if network has data will send to terminal, then must only after descending TBF foundation is finished, could on the descending TBF that sets up, send downlink data packet earlier by finish the foundation of descending TBF with the Signalling exchange of terminal to terminal.Descending TBF sets up by network control.Below packet is also referred to as packet.
Referring to shown in Figure 1, typical up TBF process comprises the steps:
Step 101: terminal requires to set up up TBF to the network side channel request.
Step 102: after network side is received this channel request, be this terminal distribution TBF, and send resource assignment information to this terminal.
Step 103: after terminal is received this resource assignment information, on the TBF that distributes, send upstream data bag 1.
Step 104: terminal can continue to send upstream data bag 2 on the TBF that distributes.
In Fig. 1, step 101 and step 102 are that terminal and network carry out Signalling exchange, set up up TBF.Only after up TBF foundation was finished, terminal could send the upstream data bag, as step 103 and step 104.
Referring to shown in Figure 2, it is as follows that typical descending TBF sets up process:
Step 201: determine self to have the new types of data that need send to terminal when network side and give the correct time, send the grouping downlink assignment message, require to set up descending TBF to terminal.Its mid-S/P position equals 1, and the terminal of indicating is confirmed this assignment message.
Step 202: after terminal is received the grouping downlink assignment message, respond packet acknowledgement to network side, to confirm.
Step 203: network side sends downlink data packet 1 on the descending TBF of assignment.
Step 204: network side sends downlink data packet 2 on the descending TBF of assignment.
In Fig. 2, step 101 and step 102 are that terminal and network side carry out Signalling exchange, set up descending TBF.Only after descending TBF set up, network side could send downlink data packet, as step 203 among Fig. 2 and step 204.
In the prior art, terminal will send upstream data to network in the gsm system, must set up ascending physical signal earlier and connect, and typical process is seen Fig. 1.Network will send downlink data to terminal, must set up downlink physical earlier and connect, and typical process is seen Fig. 2.Be by data-triggered the opportunity that this up-downgoing physical connection is set up, and particularly, terminal has data to send to network, just triggers and set up physical connection, and network has data to send to terminal, just triggers and set up the downlink physical connection.
With a PING business is example, its transmitted in packets as follows suddenly:
(1) terminal will send upstream data to network side, but self does not have up physical connection.
(2) terminal by with the Signalling exchange of network side, finish ascending physical signal and connect and set up.
(3) terminal sends a PING bag to network side on the ascending physical signal of setting up connects.
(4) network side is received the PING bag that this terminal sends, and finds that no downlink physical connects.
(5) network side by with the Signalling exchange of terminal, finish downlink physical and connect and set up.
(6) network side sends the PING bag to terminal on the downlink physical of setting up connects.
There are two big characteristics in existing GSM Packet Service transmission.First is: have wireless and wire transmission part simultaneously, and the transmission delay of wireless portion is far longer than the wire transmission part, so the main bottleneck of transmission delay is at wireless portion.Second is: with regard to the probability statistics of mode, generally have upstream data, just have the corresponding downstream data, be i.e. the similar PING of type of service.
In sum, existing scheme is only just set up descending ways of connecting when having downlink data, and this connection need be finished by information interaction at wireless mouthful.Therefore, if there is not downlink physical to connect, downlink data must be waited for, waits for after downlink physical connects foundation and just can transmit.Like this, waiting for that downlink physical connects sets up process and causes transmission delay.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that improves packet transmitting performance, solve because of waiting for that downlink physical connects and set up the downlink transfer delay problem that increases.
In order to achieve the above object, the invention provides a kind of method that improves packet transmitting performance, be applied in the Packet Service transmission system, this system is before the professional transmission of upstream packet, need set up the uplink passage, before the downlink grouping traffic transmission, need set up the downlink transfer passage, this method comprises:
A. network side is set up to be connected with the downlink physical of this terminal room in that determine self to have need be before the downlink data packet that terminal sends;
B. described network side is dispatched described downlink physical and is connected; Described scheduling comprises: B1, network side reduce the scheduling frequency that described downlink physical is connected or the scheduling frequency that described downlink physical connects is set is zero; B2, network side send the virtual controlling piece to terminal, determine self to have need be to downlink data packet that this terminal sends the time when network side, return to normal scheduling frequency;
C. determining self to have when network side need be after the downlink data packet that this terminal sends, and the downlink physical of directly utilizing steps A to set up connects this downlink data packet of transmission.
Further comprise before the steps A:
Terminal sends the ascending physical signal connection request to network side;
Then network side determining self to have need before the downlink data packet that terminal sends be in the steps A: after network side is received the ascending physical signal connection request that this terminal sends, and determine self to have need be to the random time before the downlink data packet that this terminal sends.
Described Packet Service transmission system is a global system for mobile communications.
Described ascending physical signal is connected to temporary up-link block flow, and described downlink physical is connected to descending Temporary Block Flow.
According to the proposed method, in mobile communication system, network side can be set up downlink physical in advance for the downlink grouped transmission and connect.Like this, when downlink data packet arrives, can directly utilize and set up good down physical channel transmission downlink data packet.Therefore, reduce the downlink data packet stand-by period, reduce propagation delay time.
Description of drawings
Fig. 1 shows the schematic flow sheet that typical up TBF sets up;
Fig. 2 shows the schematic flow sheet that typical descending TBF sets up;
Fig. 3 is for realizing the schematic flow sheet of the inventive method;
Fig. 4 is for realizing the specific embodiment schematic flow sheet of the inventive method.
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.
Method of the present invention is applied in the Packet Service transmission system, and this system need comprise following feature: before the professional transmission of upstream packet, need set up the uplink passage, before the downlink grouping traffic transmission, need set up the downlink transfer passage.Such as: communication system can be global system for mobile communications (GSM).
Method of the present invention is in the packet data transmission process, determines self to have and need set up downlink physical for downlink transfer and connect before the downlink data packet that terminal sends at network side.Set up opportunity that downlink physical connects by network control, can be receive the up channel request determine that to network side the downlink data packet that need send to this terminal is arranged self before whenever.Such as, can be when setting up the ascending physical signal connection, the establishment of connection of the initiation downlink physical sometime flow process in the perhaps uplink process.
Referring to shown in Figure 3, realize that method of the present invention may further comprise the steps:
Step 301: network side is set up to be connected with the downlink physical of this terminal room in that determine self to have need be before the downlink data packet that terminal sends.
Step 302: determine self to have need be to downlink data packet that terminal sends the time when network side, the downlink physical of directly utilizing in the step 301 to be set up connects this downlink data packet of transmission.
Network side determining self to have need can be to the time before the downlink data packet that terminal sends: after network side is received the ascending physical signal connection request that terminal sends, up to the random time of determining between the downlink data packet that self oriented this terminal sends.
And the downlink physical of foundation connects is dispatched by network side.Before network side determined that the downlink data packet that need send to terminal is arranged self, network side can reduce the scheduling frequency to described downlink physical connection; Network side sends virtual (Dummy) controll block and gives terminal, or sends network and terminal can both compatible packet.Certainly, network side also can suspend the scheduling that this downlink physical is connected, and promptly scheduling frequency is zero.Like this, determine self to have need be to downlink data packet that this terminal sends the time, return to normal scheduling frequency, utilize the normal consistency frequency to send downlink data packet again when network side.
Referring to shown in Figure 4, the idiographic flow of present embodiment is as follows:
Step 401: terminal requires to set up up TBF to the network side channel request.
Step 402: after network side is received this channel request, send resource allocating message, set up up TBF to this terminal.
Step 403: after terminal is received the resource allocating message of network side transmission, begin to utilize the TBF of foundation to send upstream data bag 1 to network side.
Step 404: the TBF that the terminal utilization is set up sends upstream data bag 2 to network side.
Step 405: network side is selected an opportunity in the transmitting uplink data process, sends the downlink resource assignment message to terminal, sets up descending TBF.
Step 406: after terminal is received this downlink resource assignment message, continue to send upstream data bag 3.
Step 407: before downlink data arrives, reduce the scheduling of this descending TBF, network side sends dummy controll block to terminal.
Step 408: discharge up TBF.
Step 409: before downlink data arrived, network side continued to send Dummy controll block to terminal.
Step 410: if within a certain period of time, network side is received downlink data packet, then recovers the normal descending scheduling of this TBF, and packet is sent to terminal on this TBF.
Step 411: network side continues to send downlink data packet 2.
Certainly, if within a certain period of time, network is not received downlink data packet, then adopts the described transmission of present 3GPP TS 44.0609.3.1a chapters and sections LLC UI Dummy commands to discharge this descending TBF.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (4)
1, a kind of method that improves packet transmitting performance is applied in the Packet Service transmission system, and this system is before the professional transmission of upstream packet, need set up the uplink passage, before the downlink grouping traffic transmission, need set up the downlink transfer passage, it is characterized in that: this method may further comprise the steps:
A. network side is being determined self to have and need set up downlink physical and connect before the downlink data packet that terminal sends;
B. described network side is dispatched described downlink physical and is connected; Described scheduling comprises: B1, network side reduce the scheduling frequency that described downlink physical is connected or the scheduling frequency that described downlink physical connects is set is zero; B2, network side send the virtual controlling piece to terminal, determine self to have need be to downlink data packet that this terminal sends the time when network side, return to normal scheduling frequency;
C. determine self to have need be to downlink data packet that this terminal sends the time when network side, the downlink physical of directly utilizing steps A to set up connects this downlink data packet of transmission.
2, method according to claim 1 is characterized in that, further comprises before the steps A:
Terminal sends the ascending physical signal connection request to network side;
Then network side determining self to have need before the downlink data packet that terminal sends be in the steps A: after network side is received the ascending physical signal connection request that this terminal sends, and determine self to have need be to the random time before the downlink data packet that this terminal sends.
3, method according to claim 2 is characterized in that, described Packet Service transmission system is a global system for mobile communications.
4, method according to claim 3 is characterized in that, described ascending physical signal is connected to temporary up-link block flow, and described downlink physical is connected to descending Temporary Block Flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100727257A CN100508455C (en) | 2006-04-07 | 2006-04-07 | Method for improving packet transmitting performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100727257A CN100508455C (en) | 2006-04-07 | 2006-04-07 | Method for improving packet transmitting performance |
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| CN1983932A CN1983932A (en) | 2007-06-20 |
| CN100508455C true CN100508455C (en) | 2009-07-01 |
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| CNB2006100727257A Expired - Fee Related CN100508455C (en) | 2006-04-07 | 2006-04-07 | Method for improving packet transmitting performance |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101959256B (en) * | 2009-07-16 | 2013-08-21 | 中兴通讯股份有限公司 | Method for establishing upper layer service connection and device thereof |
| CN105992388A (en) * | 2015-02-05 | 2016-10-05 | 中兴通讯股份有限公司 | Downlink data access and transmission method and apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328756A (en) * | 1998-11-27 | 2001-12-26 | 诺基亚移动电话有限公司 | Method and arrangement for transferring in packet radio service |
| EP1257096A2 (en) * | 2000-12-22 | 2002-11-13 | Siemens Information and Communication Networks S.p.A. | Procedure for the scheduling of packet data transmission permits on radio channels shared by mobile stations in GSM-GPRS systems |
| CN1390425A (en) * | 1999-09-16 | 2003-01-08 | 诺基亚有限公司 | Allocation of radio resources from a network in a packet switched data transmission system |
| CN1442007A (en) * | 2000-03-31 | 2003-09-10 | 艾利森电话股份有限公司 | Communication system for performing packet data transfer with reduced delay |
| CN1491522A (en) * | 2001-04-18 | 2004-04-21 | �ƶ��Ѷ��� | Method for reducing radio channel access delay in wireless communication system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328756A (en) * | 1998-11-27 | 2001-12-26 | 诺基亚移动电话有限公司 | Method and arrangement for transferring in packet radio service |
| CN1390425A (en) * | 1999-09-16 | 2003-01-08 | 诺基亚有限公司 | Allocation of radio resources from a network in a packet switched data transmission system |
| CN1442007A (en) * | 2000-03-31 | 2003-09-10 | 艾利森电话股份有限公司 | Communication system for performing packet data transfer with reduced delay |
| EP1257096A2 (en) * | 2000-12-22 | 2002-11-13 | Siemens Information and Communication Networks S.p.A. | Procedure for the scheduling of packet data transmission permits on radio channels shared by mobile stations in GSM-GPRS systems |
| CN1491522A (en) * | 2001-04-18 | 2004-04-21 | �ƶ��Ѷ��� | Method for reducing radio channel access delay in wireless communication system |
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| CN1983932A (en) | 2007-06-20 |
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Granted publication date: 20090701 |