CN101146342B - A downlink resource allocation system and method in GPRS system - Google Patents
A downlink resource allocation system and method in GPRS system Download PDFInfo
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- CN101146342B CN101146342B CN200610153829A CN200610153829A CN101146342B CN 101146342 B CN101146342 B CN 101146342B CN 200610153829 A CN200610153829 A CN 200610153829A CN 200610153829 A CN200610153829 A CN 200610153829A CN 101146342 B CN101146342 B CN 101146342B
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Abstract
The invention discloses a system and method for resource allocation under GPRS system. The system includes a mobile station and a corresponding radio network, wherein the radio network delivers the information of current downlink grouped link assignment to the mobile station, and also delivers data block to the mobile station according to the information of downlink grouped link assignment, while adding poll information to the delivered data block; the mobile station receives the information of downlink grouped link assignment, data block and poll information, and responds to the radio network with the poll responding information. The method includes the following steps: the network side delivers the information of current downlink grouped link assignment to the mobile station; the network side delivers data block to the information of downlink grouped link assignment and adds poll information to the delivered data block; the mobile station responds to the network side with the poll responding information according to the status of data block reception.
Description
Technical field
The present invention relates to a kind of mobile communication technology, relate in particular to the system and method that downlink resource distributes in a kind of GPRS (General Packet Radio Service, GPRS) system.
Background technology
GPRS is a kind of mobile pocket data business that on existing global system for mobile communications basis, grows up.GPRS is through in global digital mobile communication network, introducing the packet switching functional entity, with the transfer of data of supporting to adopt packet mode to carry out.Gprs system can be regarded as the business that circuit switching system in original global system for mobile communications is carried out and expands, and utilizes portable terminal to insert the demand of the Internet or other packet data network to satisfy the user.
The gprs system downlink grouped is transmitted in the process data packet, the packet that uses downstream assigned message to come initialization to send to the travelling carriage that is in ready state.When downlink grouped forwarding packet existed, transmission comprised the grouping downlink assignment messages that downlink grouped link assignment, many Temporary Block Flows downstream assigned, many Temporary Block Flows time slot are heavily assigned on the downlink grouped associated control channel; If above-mentioned downlink grouped associated control channel does not exist, and there is Packet Common Control CHannel in current area, then on Packet Common Control CHannel, sends downlink grouped link assignment and many Temporary Block Flows downstream assigned; If above-mentioned Packet Common Control CHannel does not exist, and there is shared control channel in current area, then on shared control channel, sends immediate assignment message.For the travelling carriage of the two forward modes on dedicated channel, assignment messages is sent on DCCH.Comprise in the grouping downlink assignment messages as descending packet data traffic channel tabulation,, also can comprise Timing Advance and power control messages if still have the space.And travelling carriage can require to respond with the control response message of dividing into groups.
In the gprs system, the process of system assignment downlink resource is as shown in Figure 1.Among Fig. 1; Network side issues downlink grouped link assignment message (01) to travelling carriage on the downlink grouped associated control channel; After travelling carriage receives this assignment messages; Divide into groups to control response message (02) to one of network side feedback, the expression travelling carriage has received the downlink grouped link assignment message that network side issues; Afterwards, network side issues data block (03) through Packet Data Channel to travelling carriage according to above-mentioned downlink grouped link assignment message; The moment of setting; Network side can add polling message (04) in the data block that issues, after travelling carriage receives this polling message, receive the situation of data block in conjunction with it; On the downlink grouped associated control channel, confirm to reply/deny response message (05), to represent success or unsuccessfully to have received data block to grouping downlink of network side feedback.Because GPRS network is the transmitted in packets data block, therefore, network side continues to issue data block (06) through Packet Data Channel to travelling carriage after definite travelling carriage has successfully received above-mentioned data block.Network side can issue to travelling carriage in the process of data block (06); The moment of setting; In the downlink grouped link assignment message that issues to travelling carriage, add polling message (07) through the downlink grouped associated control channel; Come the poll travelling carriage whether correctly to receive assignment information, travelling carriage then divides into groups to control response message (08) according to its reception situation to one of network side feedback, confirms correctly to have received assignment information.Network side continues to issue data block (09) to travelling carriage through Packet Data Channel; And in last data block, add polling message (10); Come the reception condition of poll travelling carriage to data block; Travelling carriage then receives the data block situation according to it, feeds back a grouping downlink and confirms to reply/deny response message (11), to represent success or unsuccessfully to have received all data blocks.
In the process of above-mentioned GPRS allocation of downlink Radio Resource; Downlink grouped link assignment message (01) message feedback that travelling carriage issues network side divides into groups to control response message (02); And travelling carriage poll that network side is issued its receive message (07) and the grouping control response message (08) of feedback of downlink grouped link assignment message scenario, these response messages send in a up-link wireless block period according to reserved block period relatively.Mobile station side begins to send to the response message of confirming from beginning the complete downstream assigned message that receives, and has the time delay of 40ms to 100ms usually.And the reaction time of network in the cycle, is 0～300ms at the radio block of bearer service maximum appointment reciprocal normally, and the reaction time of relatively optimizing is 60ms.Suppose under best situation; The response message of assignment messages and affirmation all receives correctly, and reserved block period and bearer service maximum reciprocal is all got optimum relatively, and promptly reserved block period is got 40ms relatively; Bearer service maximum reciprocal is got 60ms, and then minimum time delay also will reach 100ms.In the time delay of this 100ms, wireless network resource is not used by network and Any user, but has been wasted.
In sum; Because the assignment messages feedback acknowledgment message that in the downlink resource assigning process of gprs system, needs travelling carriage that network side is issued, so cause mobile station side to begin to send to the response message of confirming and have certain time delay from beginning the complete downstream assigned message that receives, this has not only influenced the dispensing rate of system descending resource; And; In this time delay, Internet resources are not used by network and Any user, have wasted system resource yet.
Summary of the invention
The present invention is directed to the shortcoming of prior art; The system and method that downlink resource distributes in a kind of gprs system is provided; Network side just directly issues data block to travelling carriage issue current downlink grouped link assignment message to travelling carriage after; Thereby improve the speed of system descending resource allocation, also improved usage factor of system resource.
The system that downlink resource distributes in the gprs system of the present invention comprises travelling carriage and corresponding wireless network, wherein,
Wireless network issues current downlink grouped link assignment message to travelling carriage; Said wireless network is after issuing current downlink grouped link assignment message to said travelling carriage; Directly issue data block according to this downlink grouped link assignment message to travelling carriage; In the data block that issues, add polling message, through the said polling message said data block of having confirmed reception that said travelling carriage is whether correct;
Travelling carriage receives downlink grouped link assignment message, data block, reaches polling message, and receives the data block situation according to it, replys poll response messages to wireless network.
Above-mentioned downlink grouped link assignment message comprises group mode information, overall bitmap indication information, bitmap indication assignment information, Temporary Block Flow time started information.
Above-mentioned wireless network adds polling message in the moment of setting in the data block that issues to travelling carriage.
When above-mentioned travelling carriage successfully receives data block, reply the response message of confirming; When travelling carriage receives the data block failure, reply the response message of denying.
The present invention also provides the method that downlink resource distributes in a kind of gprs system, and its step comprises:
Step 1, wireless network issues current downlink grouped link assignment message to travelling carriage;
Step 2; Said wireless network is after issuing current downlink grouped link assignment message to said travelling carriage; Network side directly issues data block to travelling carriage according to above-mentioned downlink grouped link assignment message; And in the data block that issues, add polling message, through the said polling message said data block of having confirmed reception that said travelling carriage is whether correct;
In the above-mentioned steps one, downlink grouped link assignment message comprises group mode information, overall bitmap indication information, bitmap indication assignment information, Temporary Block Flow time started information.
In the above-mentioned steps three, when travelling carriage successfully receives data block, reply the response message of confirming; When travelling carriage receives the data block failure, reply the response message of denying.
Among the present invention; Network side is after issuing current downlink grouped link assignment message to travelling carriage; Just directly issue data block to travelling carriage according to this message; Thereby eliminated the time delay of travelling carriage, both improved the speed of system descending resource allocation, improved usage factor of system resource from complete reception downlink grouped link assignment message to this process existence of answer response message.
Description of drawings
Fig. 1 is the schematic flow sheet that the gprs system downlink resource distributes in the prior art;
Fig. 2 is the system configuration sketch map that downlink resource distributes in the gprs system of the present invention;
Fig. 3 be that downlink resource distributes in the gprs system of the present invention method flow diagram;
Fig. 4 is the schematic flow sheet that downlink resource distributes in the gprs system of the present invention.
Embodiment
Among the present invention; Network side just directly issues data block to travelling carriage issue current downlink grouped link assignment message to travelling carriage after; Thereby eliminated the time delay of travelling carriage, improved usage factor of system resource from complete reception downlink grouped link assignment message to this process existence of answer response message.
Below in conjunction with accompanying drawing the present invention is further specified.
System as shown in Figure 2, that downlink resource distributes in the gprs system of the present invention comprises travelling carriage 1 and corresponding wireless network.Wherein, wireless network comprises the base station 2 that is used for photos and sending messages under travelling carriage, the base station controller 3 and the core net 4 of base station 2 correspondences.
Said core net 4 issues current downlink grouped link assignment message through base station 2 to travelling carriage 1, and issues data block according to this downlink grouped link assignment message to travelling carriage 1, in the data block that issues, adds polling message.
Above-mentioned downlink grouped link assignment message comprises group mode information, overall bitmap indication information, bitmap indication assignment information, Temporary Block Flow time started information.
Said travelling carriage 1 receives downlink grouped link assignment message that above-mentioned base station 2 issues, data block, and polling message, and receives the data block situation according to it, replys poll response messages to base station 2.
Among the present invention, core net 4 can be added polling message in the moment of setting in the data block that issues to travelling carriage 1, and travelling carriage 1 is then replied corresponding poll response messages to base station 2.When travelling carriage 1 successfully receives data block, reply the response message of confirming; When travelling carriage 1 receives the data block failure, reply the response message of denying.
Among the present invention, core net 4 also can be added polling message in last data block that issues to travelling carriage 1, and travelling carriage 1 is then replied corresponding poll response messages to base station 2.When travelling carriage 1 successfully receives last data block, reply the affirmation response message that finishes receiving; When travelling carriage 1 receives last data block failure, reply the response message of denying that takes defeat.
According to above-mentioned; Wireless network is after issuing current downlink grouped link assignment message to travelling carriage; Just directly issue data block to travelling carriage according to this message; Thereby can eliminate the time delay of travelling carriage, both improve the speed of system descending resource allocation, improve usage factor of system resource from complete reception downlink grouped link assignment message to this process existence of answer response message.
The present invention also provides the method that downlink resource distributes in a kind of gprs system, and as shown in Figure 3, its step comprises:
In this step, network side can issue current downlink grouped link assignment message to travelling carriage through downlink grouped associated control channel or Packet Common Control CHannel or shared control channel.Above-mentioned assignment messages can be group mode information, overall bitmap indication information, bitmap indication assignment information and Temporary Block Flow time started information.For example, among Fig. 4, network side issues downlink grouped link assignment message (21) through the downlink grouped associated control channel to travelling carriage.
In this step, network side issues data block according to the current downlink grouped link assignment message that issues to travelling carriage in the above-mentioned steps 101 to travelling carriage.In Fig. 4, network side issues data block (22) according to downlink grouped link assignment message (21) to travelling carriage, data block (23), and data block (25) and data block (27).
Network side issues in the data block process, can set a Fixed Time Interval, when arriving setting during the moment, just in the data block that issues, adds polling message, is used for understanding the situation that travelling carriage receives data block.In Fig. 4, network side adds polling message in the data block that issues to travelling carriage (23), is used for understanding the situation that travelling carriage receives data block (22) and data block (23).
After travelling carriage receives the polling message that comprises in the data block, receive the situation of data block, reply response message to network side according to it.In Fig. 4; Network side is issuing interpolation polling message in the data block (23) to travelling carriage; Be used for understanding the situation that travelling carriage receives data block (22) and data block (23); Then travelling carriage receives the situation of data block (22) and data block (23) according to it, replys grouping downlink to network side and confirms to reply/deny response message (24).When travelling carriage successfully receives data block, reply the response message of confirming; When travelling carriage receives the data block failure, reply the response message of denying.
When network side to data block that travelling carriage issues during for last data block in all data blocks of this transmission, network side can be dosed polling message in this data block, this data block that has been used for confirming reception that travelling carriage is whether correct.After travelling carriage receives this data block, receive the situation of data block, reply response message to network side according to it.When travelling carriage successfully receives last data block, reply the affirmation response message that finishes receiving; When travelling carriage receives last data block failure, reply the response message of denying that takes defeat.In Fig. 4; Network side adds polling message in the last data block (28) that issues to travelling carriage; After travelling carriage receives this data block that comprises polling message (28); According to polling message wherein, receive the situation of data block (28) in conjunction with it, reply grouping downlink to network side and confirm to reply/deny response message (29).
Among the present invention; Network side is issuing to travelling carriage in the process of data block, and downlink grouped link assignment message may change, at this moment; Network side upgrades the downlink grouped link assignment message that it issues; And the downlink grouped link assignment message after travelling carriage issues renewal, afterwards, the current downlink grouped link assignment message after network side upgrades according to this issues data block to travelling carriage.In Fig. 4, network side issues the downlink grouped link assignment message (26) of renewal to travelling carriage, and afterwards, the downlink grouped link assignment message (26) after network side upgrades according to this issues data block (27) to travelling carriage.
Because network side is to the travelling carriage down distributing resource time, travelling carriage has been in ready state, that is to say, this moment, travelling carriage was connected to mobile management, and the position of travelling carriage in the sub-district can confirm that travelling carriage can receive point-to-point and the point-to-multipoint data.Therefore; Descending resource allocation method of the present invention can guarantee that the travelling carriage in the sub-district can receive the data that network side issues; And issue the service quality of data for network side; Then can ensure, promptly confirm that through follow-up polling message travelling carriage receives the situation of data block through the quality-of-service mechanisms on follow-up polling message or upper strata.The quality-of-service mechanisms on upper strata described here promptly is that the upper strata then can require corresponding opposite end to retransmit, thereby guarantee that network side issues the service quality of data if fail to receive complete data block.
Among the present invention; Network side is after issuing downlink grouped link assignment message to travelling carriage; Just issue data block to travelling carriage according to this message; And be different from the prior art, network side must be waited for and just issue data block after travelling carriage is replied the response message that receives downlink grouped link assignment message, thereby eliminate travelling carriage from complete reception downlink grouped link assignment message to the time delay of replying this process existence of response message; Both improve the speed of system descending resource allocation, improved usage factor of system resource.
Although embodiment of the present invention are open as above; But it is not restricted to listed utilization in specification and the execution mode; It can be applied to various suitable the field of the invention fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (12)
1. the system that downlink resource distributes in the gprs system comprises travelling carriage and corresponding wireless network, it is characterized in that,
Said wireless network issues current downlink grouped link assignment message to travelling carriage;
Said wireless network is after issuing current downlink grouped link assignment message to said travelling carriage; Directly issue data block according to this downlink grouped link assignment message to travelling carriage; In the data block that issues, add polling message, through the said polling message said data block of having confirmed reception that said travelling carriage is whether correct;
Said travelling carriage receives downlink grouped link assignment message, data block, reaches polling message, and receives the data block situation according to it, replys poll response messages to wireless network.
2. the system that downlink resource as claimed in claim 1 distributes is characterized in that, said downlink grouped link assignment message comprises group mode information, overall bitmap indication information, bitmap indication assignment information, Temporary Block Flow time started information.
3. the system that downlink resource as claimed in claim 1 distributes is characterized in that, said wireless network adds polling message in the moment of setting in the data block that issues to travelling carriage.
4. the system that downlink resource as claimed in claim 3 distributes is characterized in that, when travelling carriage successfully receives data block, replys the response message of confirming; When travelling carriage receives the data block failure, reply the response message of denying.
5. the system that downlink resource as claimed in claim 1 distributes is characterized in that said wireless network adds polling message when issuing last data block in this data block.
6. the system that downlink resource as claimed in claim 5 distributes is characterized in that, when travelling carriage successfully receives last data block, replys the affirmation response message that finishes receiving; When travelling carriage receives last data block failure, reply the response message of denying that takes defeat.
7. the method that downlink resource distributes in the gprs system is characterized in that step comprises:
Step 1, wireless network issues current downlink grouped link assignment message to travelling carriage;
Step 2; Said wireless network is after issuing current downlink grouped link assignment message to said travelling carriage; Network side directly issues data block to travelling carriage according to above-mentioned downlink grouped link assignment message; And in the data block that issues, add polling message, through the said polling message said data block of having confirmed reception that said travelling carriage is whether correct;
Step 3, travelling carriage receives the data block situation according to it, replys poll response messages to network side.
8. the method that downlink resource as claimed in claim 7 distributes is characterized in that, in the said step 1, downlink grouped link assignment message comprises group mode information, overall bitmap indication information, bitmap indication assignment information, Temporary Block Flow time started information.
9. the method that downlink resource as claimed in claim 7 distributes is characterized in that, in the said step 2, when arriving setting during the moment, network side adds polling message in issuing data block.
10. like the method for claim 7 or 9 described downlink resources distribution, it is characterized in that, in the said step 3, when travelling carriage successfully receives data block, reply the response message of confirming; When travelling carriage receives the data block failure, reply the response message of denying.
11. the method that downlink resource as claimed in claim 7 distributes is characterized in that in the said step 2, network side adds polling message in last data block that issues.
12. the method that downlink resource as claimed in claim 11 distributes is characterized in that, in the said step 3, when travelling carriage successfully receives last data block, replys the affirmation response message that finishes receiving; When travelling carriage receives last data block failure, reply the response message of denying that takes defeat.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220788A (en) * | 1997-03-27 | 1999-06-23 | 诺基亚电信公司 | Allocation of control channel in packet radio network |
| CN1373617A (en) * | 2001-02-09 | 2002-10-09 | 诺基亚有限公司 | Improved method and device for transmission of message in packet radio service |
| CN1523836A (en) * | 2003-09-05 | 2004-08-25 | 中兴通讯股份有限公司 | A downlink data transmission assignment method in GPRS system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220788A (en) * | 1997-03-27 | 1999-06-23 | 诺基亚电信公司 | Allocation of control channel in packet radio network |
| CN1373617A (en) * | 2001-02-09 | 2002-10-09 | 诺基亚有限公司 | Improved method and device for transmission of message in packet radio service |
| CN1523836A (en) * | 2003-09-05 | 2004-08-25 | 中兴通讯股份有限公司 | A downlink data transmission assignment method in GPRS system |
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| CN101146342A (en) | 2008-03-19 |
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