CN101534563B - Service scheduling method, system and access relay station thereof - Google Patents
Service scheduling method, system and access relay station thereof Download PDFInfo
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- CN101534563B CN101534563B CN2008101017998A CN200810101799A CN101534563B CN 101534563 B CN101534563 B CN 101534563B CN 2008101017998 A CN2008101017998 A CN 2008101017998A CN 200810101799 A CN200810101799 A CN 200810101799A CN 101534563 B CN101534563 B CN 101534563B
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Abstract
The invention discloses a service scheduling method, a system and an access relay station thereof, pertaining to the field of relay networks; the method comprises the steps of: receiving a service scheduling message from a superior station for scheduling a service, determining the time for processing the data of the service, determining the time for granting bandwidth to a subscriber station according to the time for the superior station to grant a bandwidth to local stations and the data processing time which are respectively indicated in the service scheduling message, granting bandwidth to the subscriber station within the time for granting bandwidth to the subscriber station and receiving the data sent by the subscriber station by the granted bandwidth. The access relay station comprises a receiving module, a processing module and a granting module; the system comprises the access relay station and the subscriber station. The invention causes the access relay station (RS) to be capable of using bandwidth granted by the superior station to transmit data from the subscriber station (SS) so as to prevent the granted bandwidth of the access RS from being wasted.
Description
Technical field
The present invention relates to the junction network field, particularly a kind of method and system of dispatching services and access relay station.
Background technology
At distributed scheduling MR (Multi-hop Relay, multi-hop relay) in the system, for real time business UGS (UnsolicitedGrant Service, unsolicited grant service), rtPS (Real-time polling service, the real time polling service), ErtPS (ExtendedrtPS, the real time polling service of expansion), MR-BS (MR Base Station, multi-hop relay base station) and MR-BS and SS (Subscriber Station, subscriber board) each RS (the Relay Station between, relay station), all can be periodically in real time for subordinate's station grant bandwidth or carry out poll.
The higher level who inserts RS stands in before inserting the RS grant bandwidth, indicates schedule information by RS-SCH (RS Scheduling Message, relay station scheduling) message to inserting RS.Wherein, comprise multiple information in the RS-SCH message, having indicated the management message type value of RS-SCH message as parameter " Management Message Type=92 " is 92; " CID " indicated this message at the transmission CID (Connection Identifier, connection identifier) of service flow; " N_CID " indicated the number of transmission CID; " RS UL Allocation Frame Offset " indicated MR-BS at this service flow to inserting RS grant bandwidth temporal information; " Bandwidth " indicated the size of institute's grant bandwidth.
The higher level station of inserting RS can be MR-BS, perhaps is middle RS.Be that MR-BS is the process of example explanation higher level station to access RS grant bandwidth with the higher level station of inserting RS below, referring to Fig. 1, MR-BS and SS apart 2 jump, and MR-BS is as follows to the flow process that inserts the RS grant bandwidth:
101:MR-BS sends RS-SCH message to inserting RS.After RS receives RS-SCH message, obtain MR-BS will for the frame, the amount of bandwidth of authorizing, the bandwidth that insert the RS grant bandwidth authorize at service flow and SS;
102: at the frame for access RS grant bandwidth of RS-SCH message indication, MR-BS is to inserting the RS grant bandwidth;
103: insert the bandwidth that RS uses MR-BS to authorize, send the data (MAC PDU, i.e. media access control protocol data cell) that receive from SS to MR-RS.
In realizing process of the present invention, the inventor finds that above-mentioned prior art has following shortcoming at least: regulation does not insert RS and how to obtain data from SS, insert RS and receive data from SS and may occur in any time, as before 101, between 101 and 103,103 afterwards or the like; For situation about occurring in after 103, then can't guarantee to insert RS and in 103, use the bandwidth that is awarded to stand forwarding from the data of SS, thereby cause the waste of the bandwidth that is awarded to the higher level.
Summary of the invention
Insert the bandwidth that RS is awarded in order to effectively utilize, the embodiment of the invention provides a kind of method and system and access relay station of dispatching services.Described technical scheme is as follows:
On the one hand, the embodiment of the invention provides a kind of method of dispatching services, and described method comprises:
The service dispatching information that business is dispatched that receives that the higher level station sends;
Determine processing time to the data of described business;
To the time and the described processing time of local grant bandwidth, determine time according to the described higher level station of indicating in the described service dispatching information to the subscriber station grant bandwidth;
In described time, to described subscriber station grant bandwidth to the subscriber station grant bandwidth;
Receive the data that described subscriber station uses the bandwidth that is awarded to send.
On the other hand, the embodiment of the invention also provides a kind of access relay station, and described access relay station comprises:
Receiver module is used to receive the information of the service dispatching dispatching services that the higher level station sends dispatches business, and receives the data that subscriber station uses the bandwidth that is awarded to send;
Processing module, be used for determining processing time to the data of described business, and the local time to described subscriber station grant bandwidth is determined to the time and the described processing time of local grant bandwidth in the described higher level station of indicating in the service dispatching information of the dispatching services of receiving according to described receiver module;
Authorize module, be used in this locality that described processing module is determined to the time of described subscriber station grant bandwidth, to described subscriber station grant bandwidth.
On the other hand, the embodiment of the invention also provides a kind of system of dispatching services, and described system comprises access relay station and subscriber station;
Described access relay station is used to receive the service dispatching information that the higher level station sends dispatches business, and the subscriber station under the described business is described subscriber station; Also be used for determining processing time to the data of described business, and according to time and the described processing time of the described higher level station of indicating in the described service dispatching information to local grant bandwidth, determine to the time of described subscriber station grant bandwidth, this time to described subscriber station grant bandwidth; Also be used to receive the data that described subscriber station uses the bandwidth that is awarded to send;
Described subscriber station is used to receive the information of the grant bandwidth that described access relay station sends, and sends data to described access relay station.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
By inserting definite time of RS to the SS grant bandwidth, and this time to the SS grant bandwidth, can guarantee at the higher level station before inserting the RS grant bandwidth, access RS can receive from the data of SS and finish processing, thereby realized inserting the data that bandwidth that RS can use the higher level station to authorize is transmitted SS, avoided being awarded the waste of bandwidth.
Description of drawings
Fig. 1 is that the higher level stands to the flow chart that inserts the RS grant bandwidth in the prior art;
Fig. 2 is the method flow diagram of the dispatching services that provides of the embodiment of the invention 1;
Fig. 3 is the structure chart of the access relay station that provides of the embodiment of the invention 2;
Fig. 4 is the system construction drawing of the dispatching services that provides of the embodiment of the invention 3.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
The embodiment of the invention provides a kind of method of dispatching services, specifically comprises: the service dispatching information that business is dispatched that receives that the higher level station sends; Determine processing time to these professional data; To time and this processing time of local grant bandwidth, determine time according to the higher level station of indicating in the service dispatching information to the SS grant bandwidth; This time to above-mentioned SS grant bandwidth; Receive the data that above-mentioned SS uses the bandwidth that is awarded to send.
In embodiments of the present invention, MR-BS and SS can also can surpass double bounce apart at a distance of double bounce, and when at a distance of double bounce, the higher level station of inserting RS is MR-BS; When surpassing double bounce, the higher level station of inserting RS is and inserts the adjacent middle RS of RS.Business in the embodiment of the invention can be among UGS, rtPS and the ErtPS any.
Embodiment 1
Referring to Fig. 2, the embodiment of the invention provides a kind of method of dispatching services, specifically comprises:
201: the higher level station sends the service dispatching information that business is dispatched to inserting RS, comprises the higher level station in this service dispatching information for inserting time, the size of institute's grant bandwidth and the information such as CID that bandwidth is authorized pairing business (being service flow) of RS grant bandwidth; Insert RS and receive this service dispatching information.
Service dispatching information is specifically carried by RS-SCH message in the present embodiment.
202: insert definite processing time of RS to the data of the business of appointment in the above-mentioned service dispatching information.
Particularly, inserting RS can be according at least a in link-quality between the hardware handles time delay of data (as decoding, coding, modulation, demodulation, data are carried out decapsulation, revised the time delay that processing such as parameter in the heading bring), local and the affiliated SS of this business and the loading condition of this professional qos parameter (as maximum delay, tolerable delay variation etc.), local (promptly inserting RS), definite processing time to these professional data.In addition,, can also perhaps this parameter and above-mentioned various parameter be carried out combination in any, determine processing time these professional data with reference to other parameters according to actual conditions.In the present embodiment, when business was designated, the SS under correspondingly should business was just designated, and professional data are meant the data of the SS under this business.Processing time to the data of business can be to refer to an access RS after receiving the data of SS, to the time that the data of receiving are handled, also can be to refer to an access RS to transmit the spent time of SS data to being ready to from receiving the SS data.
203: insert RS and stand to the temporal information and the above-mentioned processing time of local grant bandwidth, determine the time of this locality SS grant bandwidth under above-mentioned business according to the higher level who indicates in the RS-SCH message of receiving.
Time in the embodiment of the invention can be unit with the second, can be unit with the frame also.Particularly, insert RS and the result who obtains can be subtracted each other to the time and the above-mentioned processing time of local grant bandwidth in the higher level station that is obtained by RS-SCH message, as the time of this locality to this SS grant bandwidth.For example, under the situation of using the 802.16j standard (in the 802.16j standard, the framing bit at the bandwidth place that is awarded is in the next frame of grant bandwidth place frame), if be unit with the frame, then inserting RS obtains higher level station and authorizes the time of inserting the RS bandwidth when being the N frame at certain business, calculate the time of handling earlier, be made as j frame (j 〉=1) here, insert RS then and directly N is subtracted j to obtain inserting RS be the N-j frame to the time of this SS grant bandwidth from the data of SS.Alternatively, inserting RS also can determine to insert RS to the time of local grant bandwidth by the higher level station of indicating in the RS-SCH message and stood time at actual bandwidth place of authorizing by the higher level, and obtain time at the bandwidth place that this SS is awarded after this time and above-mentioned processing time subtracted each other, then the time at the bandwidth place that is awarded according to this SS, obtain local time to this SS grant bandwidth.For example, under the situation of using the 802.16j standard, if be unit with the frame, inserting then that RS obtains authorizing the time of inserting the RS bandwidth at certain business is the N frame, determine the next frame of the time at the bandwidth place that is awarded earlier for this frame, the N+1 frame, and calculate the time of handling to from the data of SS, be made as j frame (j 〉=1), time at the bandwidth place that the N+1-j frame is awarded as the SS under this business then, determine according to this time and to insert RS, be the previous frame of N+1-j frame, the N-j frame to the time of this SS grant bandwidth.
204: insert RS in the time of this locality of determining, to the SS grant bandwidth to the SS grant bandwidth.
205:SS uses the bandwidth that is awarded to send data to inserting RS, inserts RS and receives the data that SS sends.
Further, present embodiment also comprises:
206: the higher level stands in the indicated higher level station of RS-SCH to the time of local grant bandwidth, to inserting the RS grant bandwidth.
In the present embodiment, 205 can take place before or after 206, also can take place simultaneously with 206.
207: insert the bandwidth that RS uses the higher level station to authorize, the data from SS that receive are sent to the higher level station.
As shown in Figure 2, insert RS at the N-j frame to the SS grant bandwidth, receive the data that SS sends at the N-j+1 frame, promptly can guarantee to insert RS and stand to the higher level at the N+1 frame and send these data, thereby can effectively utilize the bandwidth that authorize at the higher level station.This example is that the higher level stands and inserts the identical situation of frame number that RS safeguards at one time, in actual applications, at one time, higher level station is with to insert the frame number that RS safeguards possible different (as sometime, the frame number that higher level station, access RS safeguard may be respectively 1,2), in this case, insert the frame number that RS can be converted to the frame number that obtains self maintained in inside, do not influence enforcement of the present invention.
Present embodiment is by inserting definite time to the SS grant bandwidth of RS, and this time to the SS grant bandwidth, before can guaranteeing that the bandwidth of being authorized by the higher level station in this locality arrives, access RS can receive from the data of SS and finish processing, thereby realized inserting the data that bandwidth that RS can use the higher level station to authorize is transmitted SS, avoided being awarded the waste of bandwidth.
Embodiment 2
Referring to Fig. 3, the embodiment of the invention also provides a kind of access relay station, specifically comprises:
Receiver module is used to receive the service dispatching information that the higher level station sends dispatches business, and receives the data that subscriber station uses the bandwidth that is awarded to send;
Processing module is used for determining the processing time to the data of above-mentioned business, and the time to the subscriber station grant bandwidth is determined to the time and the processing time of local grant bandwidth in the higher level station of indicating in the service dispatching information of receiving according to receiver module;
Authorize module, be used for processing module determine to the time of subscriber station grant bandwidth, to the subscriber station grant bandwidth.
Wherein, processing module specifically comprises:
First determining unit is used for determining the processing time to the data of above-mentioned business;
Second determining unit, subtracted each other to the processing time that time and the acquiring unit of local grant bandwidth obtains at the higher level who is used for the service dispatching information that receiver module is received is indicated station, and will subtract each other result's conduct of obtaining time to the subscriber station grant bandwidth.
Further, above-mentioned access relay station also comprises except comprising receiver module, processing module and authorizing the module:
First determination module is used for the next frame to pairing frame of the time of subscriber station grant bandwidth that processing module is obtained, is defined as the time at the bandwidth place that above-mentioned subscriber station is awarded; Correspondingly, this moment, receiver module specifically comprised:
Information receiving unit is used to receive the service dispatching information that the higher level station sends dispatches business;
The Data Receiving unit, be used for first determination module obtain in the time at the bandwidth place that subscriber station is authorized, receive the data that subscriber station uses this bandwidth to send.
In addition, receiver module also is used at higher level station receiving the stand information of grant bandwidth of higher level to the time of local grant bandwidth; Correspondingly, inserting relay station also comprises:
Sending module is used to use the bandwidth of being authorized by the higher level station, and the data forwarding of receiving from subscriber station is stood to the higher level.
When the access relay station comprises sending module, insert relay station and also comprise:
Second determination module, the higher level who is used for service dispatching information is indicated station be to the next frame of the frame of the time of local grant bandwidth correspondence, is defined as inserting the time at the bandwidth place that relay station is awarded; Correspondingly, the time at the bandwidth place that the access relay station that this moment, sending module specifically was used for obtaining at second determination module is awarded, the data forwarding from subscriber station that the bandwidth that use is authorized by the higher level station will be received is stood to the higher level.
Insert at least a that relay station can be according in link-quality between the SS and the loading condition under the qos parameter (as maximum delay, tolerable delay variation etc.) of business, local hardware handles time delay to data, local and this business in the present embodiment, definite processing time to these professional data; In addition,, can also perhaps this parameter and above-mentioned various parameter be carried out combination in any, determine processing time these professional data with reference to other parameters according to actual conditions.
Present embodiment is by inserting definite time to the SS grant bandwidth of relay station, and this time to the SS grant bandwidth, before can guaranteeing that the bandwidth of being authorized by the higher level station in this locality arrives, the access relay station can receive from the data of SS and finish processing, thereby realized inserting the data that bandwidth that relay station can use the higher level station to authorize is transmitted SS, avoided being awarded the waste of bandwidth.
Embodiment 3
Referring to Fig. 4, the embodiment of the invention also provides a kind of system of dispatching services, comprises inserting relay station and subscriber station;
Insert relay station, be used to receive the service dispatching information that higher level station sends dispatches business, the affiliated subscriber station of this business is above-mentioned subscriber station; Also be used for determining processing time to the data of above-mentioned business, and according to time and the processing time of the higher level station of indicating in the service dispatching information to local grant bandwidth, determine to the time of above-mentioned subscriber station grant bandwidth, this time to above-mentioned subscriber station grant bandwidth; Also be used to receive the data that above-mentioned subscriber station uses the bandwidth that is awarded to send;
Subscriber station is used to receive the information that inserts the grant bandwidth that relay station sends, and sends data to inserting relay station.
Present embodiment is by inserting definite time to the subscriber station grant bandwidth of relay station, and this time to the subscriber station grant bandwidth, before can guaranteeing that the bandwidth of being authorized by the higher level station in this locality arrives, the access relay station can receive from the data of subscriber station and finish processing, thereby realized inserting the data that bandwidth that relay station can use the higher level station to authorize is transmitted subscriber station, avoided being awarded the waste of bandwidth.
The embodiment of the invention can use software to realize that corresponding software programs can be stored in the storage medium that can read, and for example, inserts in hard disk, buffer memory or the CD of RS.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the method for a dispatching services is characterized in that, described method comprises:
The service dispatching information that business is dispatched that receives that the higher level station sends;
Determine processing time to the data of described business;
To the time and the described processing time of local grant bandwidth, determine time according to the described higher level station of indicating in the described service dispatching information to the subscriber station grant bandwidth;
In described time, to described subscriber station grant bandwidth to the subscriber station grant bandwidth;
Receive the data that described subscriber station uses the bandwidth that is awarded to send.
2. the method for dispatching services according to claim 1 is characterized in that, describedly determines the processing time of the data of described business is specially:
According to the QoS parameter of described business, local at least a in link-quality between hardware handles time delay, this locality and the subscriber station of data and the loading condition, determine processing time to the data of described business.
3. the method for dispatching services according to claim 1 is characterized in that, described according to the described higher level station of indicating in the described service dispatching information to the time and the described processing time of local grant bandwidth, determine to be specially to the time of subscriber station grant bandwidth:
The result who obtains is subtracted each other to the time and the described processing time of local grant bandwidth in the described higher level station of indicating in the described service dispatching information, as time to the subscriber station grant bandwidth.
4. the method for dispatching services according to claim 1 is characterized in that, and is described definite after the time of subscriber station grant bandwidth, also comprises:
With described next frame, be defined as the time at the bandwidth place that described subscriber station is awarded to pairing frame of the time of subscriber station grant bandwidth;
Correspondingly, the data that the bandwidth that the described subscriber station use of described reception is awarded is sent are specially:
Time at the bandwidth place that described subscriber station is awarded, receive the data that described subscriber station uses this bandwidth to send.
5. the method for dispatching services according to claim 1 is characterized in that, described method also comprises:
Receive the stand information of grant bandwidth of described higher level;
The bandwidth that use is awarded sends to described higher level station with the data of described reception.
6. the method for dispatching services according to claim 5 is characterized in that, and is described definite after the time of subscriber station grant bandwidth, also comprises:
With the next frame of described higher level station, be defined as the time at the bandwidth place that this locality is awarded to the frame of the time of local grant bandwidth correspondence;
Correspondingly, the bandwidth that described use is awarded sends to described higher level station with the data of described reception, is specially:
The time at the bandwidth place that is awarded in described this locality, use this bandwidth that the data of described reception are sent to described higher level station.
7. an access relay station is characterized in that, described access relay station comprises:
Receiver module is used to receive the service dispatching information that the higher level station sends dispatches business, and receives the data that subscriber station uses the bandwidth that is awarded to send;
Processing module, be used for determining processing time to the data of described business, and the time to described subscriber station grant bandwidth is determined to the time and the described processing time of local grant bandwidth in the described higher level station of indicating in the service dispatching information of receiving according to described receiver module;
Authorize module, be used for described processing module determine to the time of described subscriber station grant bandwidth, to described subscriber station grant bandwidth.
8. access relay station according to claim 7 is characterized in that, described processing module specifically comprises:
First determining unit is used for determining the processing time to the data of described business;
Second determining unit, be used for described higher level station that the service dispatching information that described receiver module is received is indicated and subtract each other, and will subtract each other result's conduct of obtaining time to described subscriber station grant bandwidth to the processing time that time and described first determining unit of local grant bandwidth obtains.
9. access relay station according to claim 7 is characterized in that, described access relay station also comprises:
First determination module is used for the next frame to pairing frame of the time of described subscriber station grant bandwidth that described processing module is obtained, is defined as the time at the bandwidth place that described subscriber station is awarded;
Correspondingly, described receiver module specifically comprises:
Information receiving unit is used to receive the service dispatching information that the higher level station sends dispatches business;
The Data Receiving unit is used for receiving the data that described subscriber station uses this bandwidth to send in the time at the bandwidth place that the described subscriber station that described first determination module obtains is awarded.
10. access relay station according to claim 7 is characterized in that, described receiver module also is used to receive the stand information of grant bandwidth of described higher level;
Correspondingly, described access relay station also comprises:
Sending module is used to use the bandwidth of being authorized by described higher level station, gives described higher level the station with the data forwarding of receiving from described subscriber station.
11. access relay station according to claim 10 is characterized in that, described access relay station also comprises:
Second determination module, the higher level who is used for described service dispatching information is indicated station be to the next frame of the frame of the time of local grant bandwidth correspondence, is defined as the time at the bandwidth place that described access relay station is awarded;
Correspondingly, described sending module specifically was used in the time at the bandwidth place that the described access relay station that described second determination module obtains is awarded, and the data forwarding from described subscriber station that the bandwidth that use is authorized by described higher level station will be received is given described higher level the station.
12. the system of a dispatching services is characterized in that, described system comprises access relay station and subscriber station;
Described access relay station is used to receive the service dispatching information that the higher level station sends dispatches business, and the subscriber station under the described business is described subscriber station; Also be used for determining processing time to the data of described business, and according to time and the described processing time of the described higher level station of indicating in the described service dispatching information to local grant bandwidth, determine to the time of described subscriber station grant bandwidth, this time to described subscriber station grant bandwidth; Also be used to receive the data that described subscriber station uses the bandwidth that is awarded to send;
Described subscriber station is used to receive the information of the grant bandwidth that described access relay station sends, and sends data to described access relay station.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1929471A (en) * | 2005-09-05 | 2007-03-14 | 中兴通讯股份有限公司 | Device for dispatching and arbitration |
| CN101111070A (en) * | 2006-08-18 | 2008-01-23 | 清华大学 | Fairness resource scheduling method based on resource scheduling in broadband wireless access system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1929471A (en) * | 2005-09-05 | 2007-03-14 | 中兴通讯股份有限公司 | Device for dispatching and arbitration |
| CN101111070A (en) * | 2006-08-18 | 2008-01-23 | 清华大学 | Fairness resource scheduling method based on resource scheduling in broadband wireless access system |
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