CN102487533A - Method and device for transmitting radio link control information in high-speed packet access system - Google Patents
Method and device for transmitting radio link control information in high-speed packet access system Download PDFInfo
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Abstract
The invention provides a method and a device for transmitting RLC (radio link control) information in a HSPA (high-speed packet access) system. The method comprises the following steps: sending a data packet of high-speed downlink packet access (HSDPA) service to user equipment (UE) of high-speed packet access (HSPA) service and setting dispatching priority of HSUPA (high-speed uplink packet access) of the UE if the situation that mark information for indicating an uplink state report returned by the UE is carried in RLC PDU (protocol data unit) information of the data packet is judged and known for performing priority dispatching on the UE; and distributing channel resources to the UE according to the set HSUPA dispatching priority so as to enable the UE to send the RLC PDU information carrying the uplink state report through the channel resources. According to the method and the device, provided by the invention, time delay of the uplink state report can be improved under a multi-user environment of the HSPA system, reset or call drop because the returned uplink state report is not received by the HSDPA service can be further avoided and the performances of the HSPA service can be improved.
Description
Technical field
The present invention relates to high-speed packet and insert (HSPA) technology, the method and the device of RLC information in the particularly a kind of HSPA system.
Background technology
For adapting to the growth requirement of mobile network's high speed data service, TD SDMA inserts and has introduced the HSPA technology in (TD-SCDMA) system.This HSPA technology comprises that high speed uplink packet inserts (HSUPA) technology and high speed downlink packet inserts (HSDPA) technology.Uplink transport channel in the system is ascending reinforced special channel (E-DCH); Be used to carry uplink information; Comprise the control of uplink business data and Radio Link (Radio Link Control is hereinafter to be referred as RLC) information, i.e. RLC control protocol data cell (RLC PDU) information.One of key technology of E-DCH is the transmission scheduling by base station (Node B) control uplink information; Promptly in each Transmission Time Interval (TTI); By Node B subscriber equipment (UE) is issued uplink information scheduling and permit, with the maximum available power of the E-DCH of restriction UE.Because the transmission of uplink information need be from the scheduling authorization of Node B, so can introduce certain time delay for the transmission of uplink information.
Under affirmation mode (AM pattern); UE is when carrying out downlink business; One request obtains the uplink service status report from receiving terminal flag can be set in pdu (PDU); Be polling request, the uplink service status report that this UE returns according to the receiving terminal that is received confirms whether successfully to send downlink information.Because under the AM pattern; The RLC informational needs of receiving terminal feedback is through the E-DCH transmission; So RLC information can have certain propagation delay time, thereby, possibly make the UE that carries out downlink business take for owing to the time delay of this uplink service status report and successfully not send downlink information when comprising the uplink service status report in this RLC information; Thereby downlink business is resetted; Even surpass certain time length in this time delay, make repeatedly reset and resend downlink information after still can't receive the uplink service status report, then cause this downlink business call drop.
Summary of the invention
To above-mentioned defective, the present invention provides the method for transmitting RLC information in a kind of HSPA system, comprising:
Insert (HSPA) professional user equipment (UE) to high-speed packet and send the professional packet of high-speed downlink packet access HSDPA; If judging to carry in the RLC control pdu RLC PDU information of knowing said packet is used to indicate said UE to return the identification information of uplink state report; Then the HSUPA dispatching priority to said UE is provided with, with the said UE of priority scheduling;
To said UE allocation of channel resources may, send the RLC PDU information that carries said uplink state report through said channel resource according to the HSUPA dispatching priority of said setting for said UE.
According to a further aspect in the invention, the device of transmitting RLC information in a kind of HSPA system is provided also, comprises that transmitting element, judging unit, priority are provided with unit and scheduling unit, wherein:
Said transmitting element is used for sending the professional packet of HSDPA to the professional UE of HSPA;
Said judging unit is used for judging whether the RLC PDU of said packet carries is used to indicate said UE to return the identification information of uplink state report;
Said priority is provided with the unit and is connected with said judging unit; Be used for if judge that know that said PDU carries is used to indicate said UE to return the identification information of uplink state report; Then the HSUPA dispatching priority to said UE is provided with, with the said UE of priority scheduling;
Said scheduling unit is provided with the unit with said priority and is connected, and is used for HSUPA dispatching priority according to said setting to said UE allocation of channel resources may, sends the RLC PDU information that carries said uplink state report through said channel resource for said UE.
The method and the device of transmitting RLC information in the HSPA provided by the invention system; Carry the professional UE of HSUPA that is used to indicate the identification information that returns uplink state report and be made as HSUPA priority scheduling user owing to will be used to receive, when sending the RLC information that carries the uplink state report at this UE to its priority scheduling.Therefore under HSPA system multi-user environment, improved the time delay of uplink state report, thereby avoided HSDPA professional, improved the HSPA performance of services because of not receiving resetting or call drop that the uplink state report returned takes place.
Description of drawings
Fig. 1 is the flow chart of the method for transmitting RLC information in the HSPA of the present invention system.
Fig. 2 is the flow chart of HSDPA business procedure in the method for transmitting RLC information in the HSPA of the present invention system.
The flow chart of HSUPA business procedure in the method for transmitting RLC information in Fig. 3 HSPA of the present invention system.
Fig. 4 is for carrying out the time slot graph of a relation of HSDPA scheduling in the HSPA system.
Fig. 5 is for carrying out the time slot graph of a relation of HSUPA scheduling in the HSPA system.
Fig. 6 is the structural representation of the device of transmitting RLC information in the HSPA of the present invention system.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing below, technical scheme of the present invention is carried out clear, intactly description.
Fig. 1 is the flow chart of the method for transmitting RLC information in the HSPA of the present invention system.As shown in fig. 1, the method for transmitting RLC information comprises in this HSPA system:
Step S100 sends the professional packet of HSDPA to the professional UE of HSPA;
In this step, receive the packet of the downlink business of transmit leg (being the NodeB side) transmission continuously.The packet of downlink business comprises downlink service data and RLC information.Under the AM pattern, in the downlink business of HSDPA, the transmission of the uplink state report of the UE of receiving terminal (being the professional UE of HSPA) is mainly triggered by the polling request of transmit leg.The receiving terminal that requires that this polling request is among the RLC PDU returns the identification information of uplink state report.Whether the RLC PDU in this HSDPA business data packet is comprised polling request judge, and the UE of this packet to receiving terminal transmitted.
Step S200, if judging to carry among the RLC PDU of knowing packet is used to indicate receiving terminal UE to return the identification information of uplink state report, then the HSUPA dispatching priority to receiving terminal UE is provided with, with this receiving terminal of priority scheduling UE;
Obtain the HSUPA dispatching priority of the corresponding receiving terminal UE of each downlink service data bag.If at each TTI, the UE as receiving terminal that RLC PDU is corresponding has only one, and then the dispatching priority of this UE is the highest, is the priority scheduling user; If at each TTI, the UE as receiving terminal that RLC PDU is corresponding has two or more, then for the corresponding UE of PDU that wherein carries polling request is provided with high HSUPA dispatching priority, is about to this UE and is set to the priority scheduling user.
Step S300 to the UE allocation of channel resources may, through said channel resource sends the RLC PDU information that carries said uplink state report for this UE according to the HSUPA dispatching priority that is provided with.
When only having the UE of a need scheduling, then directly dispatch this UE; When having the UE of a plurality of need scheduling, then the HSUPA scheduling priority of these a plurality of UE is inquired about, judge whether it is the priority scheduling user.If then if this UE of priority scheduling not, then continues next UE of inquiry.After having dispatched the priority scheduling user, remain UE in order or by predetermined sequential scheduling.
So far, flow process finishes.
Method according to transmitting RLC information in the HSPA system of the foregoing description; Carry the professional UE of HSUPA that is used to indicate the identification information that returns uplink state report and be made as HSUPA priority scheduling user owing to will be used to receive, when sending the RLC information that carries the uplink state report at this UE to its priority scheduling.Therefore under HSPA system multi-user environment, improved the time delay of uplink state report, thereby avoided HSDPA professional, improved the HSPA performance of services because of not receiving resetting or call drop that the uplink state report returned takes place.
Further, in the HSPA of the foregoing description system, in the method for transmitting RLC information, also comprise: whether detection UE has disposed status report is forbidden timer; Correspondingly, know that UE has disposed said status report and forbidden timer if detect, then the HSUPA dispatching priority to UE is provided with, and specifically comprises with the step of priority scheduling UE:
Activation/the closed condition of status report being forbidden timer detects;
Forbid timer if the UE of receiving terminal has disposed status report, then Node B side needs to consider.Ask the RLC PDU of request for sending for the first time belt wheel; Start the timer status report and forbid timer; Before this status report is forbidden timer expiry,, do not adjust the HSUPA dispatching priority of the UE of the corresponding receiving terminal of this RLC PDU even the RLC PDU that has belt wheel to ask request again sends yet.Each later on the transmission when having the RLC PDU of polling request will judge whether this timer activates, if activate, do not change the HSUPA dispatching priority of this UE; Otherwise, if forbidding timer, status report is in closed condition, then restart timer, and this UE is set is HSUPA priority scheduling user.
Further; In the HSPA of the foregoing description system in the method for transmitting RLC information; If judging to carry among the RLC PDU of knowing packet is used to indicate UE to return the identification information of uplink state report; Then the HSUPA dispatching priority to UE is provided with, and specifically comprises with the step of priority scheduling UE:
Obtain the data head flag of RLC PDU;
Polling territory to the data leader is known in the position is detected;
Know that the corresponding value in Polling territory is 1 if detect, then the HSUPA dispatching priority to UE is provided with, with priority scheduling UE.
Under the AM pattern, rlc layer adopts independently to downlink service data and RLC PDU information that packet seals transmission.
Referring to table 1, table 1 is the encapsulation format of rlc layer to downlink service data.
Table 1
In the table 1, D/C (Data/Control) territory is that business datum/RLC PDU indicates the territory, and length is 1bit; Sequence Number is a sequence number; The P territory is the Polling territory, and length is 1bit, is used for request and obtains status report from receiving terminal.The corresponding value in Polling territory is 0 o'clock, representes not solicited status report; The corresponding value in Polling territory is 1 o'clock, expression request one status report; Sequence Number territory is a sequence number, and length is 12bit.The position of P territory stuck-at-4bit.
When according to agreement MACD RLC PDU being encapsulated, when existing logic channel multiplexing, the MAC PDU of encapsulation also can comprise the C/T head of 4bit before RLC PDU, and the P territory of this MAC PDU is positioned at the position of 18bit at this moment; And when not existing logic channel multiplexing, then the P territory of this MAC PDU still is positioned at the position of 14bit.Therefore, come the P territory is inquired about through the inquiry fixed position.
Fig. 2 is the flow chart of HSDPA business procedure in the method for transmitting RLC information in the HSPA of the present invention system.As shown in Figure 2, in the HSDPA business procedure,, judge whether the Polling territory value among the RLC PDU is 1 in N-2 frame scheduling HSDPA data, do not finish this flow process if be not 1; If 1, judge then the status report that receiving terminal UE is provided with forbids whether timer activates, if then finish this flow process; If not, then start timer, this UE is set to HSUPA priority scheduling user at the N frame, and process ends.
The flow chart of HSUPA business procedure in the method for transmitting RLC information in Fig. 3 HSPA of the present invention system.As shown in Figure 3, in the HSUPA business procedure,, judge that whether this UE is HSUPA priority scheduling user, then finishes this flow process if not in N frame scheduling HSUPA business datum; If, then this user of priority scheduling and process ends.
Fig. 4 is for carrying out the time slot graph of a relation of HSDPA scheduling in the HSPA system, Fig. 5 is for carrying out the time slot graph of a relation of HSUPA scheduling in the HSPA system.Fig. 4 and Fig. 5 are used for describing from the time slot relation: in the HSUPA scheduling, confirming whether this HSPA service-user needs status report, is fully feasible, specific as follows:
As shown in Figure 4, when carrying out at the N-2 frame time HSDPA when scheduling, HS SCCH eat dishes without rice or wine (down link of HSDPA, responsible transmission sends to the control information of UE) on the N-1 frame; And on the N frame HS PDSCH eat dishes without rice or wine (High-Speed Physical Downlink Shared Channel), send downlink service data (RLC packet) to receiving terminal UE, the downlink service data of this transmission can arrive receiving terminal UE at the N+2 frame.
As shown in Figure 5, when carrying out the HSUPA scheduling at the N frame time, on N+1 frame EAGCH, eat dishes without rice or wine, be this and carry out the professional user resource allocation of HSUPA, after UE received this Resources allocation, EPUCH eated dishes without rice or wine on the N+3 frame, realized uplink traffic transmission.
By finding out among Fig. 4 and Fig. 5; Whether NodeB is known to carry in the professional RLC information of HSDPA at the N-2 frame and is used to indicate receiving terminal UE to return the identification information of uplink state report; Thereby whether need delivery status report, in N frame HSUPA scheduling, the priority of receiving terminal UE is set according to this identification information that obtains if confirming that the said UE of N+3 frame is up; This receiving terminal UE is carried out the professional priority scheduling of HSUPA; Can avoid producing dispatch delay, thereby avoid uplink service, improve the HSPA performance of services because of not receiving resetting or call drop that the uplink state report returned takes place for HSUPA is professional.
Fig. 6 is the structural representation of the device of transmitting RLC information in the HSPA of the present invention system.The device of transmitting RLC information comprises that transmitting element 10, judging unit 20, priority are provided with unit 30 and scheduling unit 40 in this HSPA system.Below be elaborated.
Transmitting element 10 is used for sending the professional packet of HSDPA to the professional UE of HSPA;
Whether the RLC PDU that judging unit 20 is used for the judgment data bag carries is used to indicate UE to return the identification information of uplink state report;
Priority is provided with unit 30 and is connected with judging unit 20, is used for if judge that know that PDU carries is used to indicate UE to return the identification information of uplink state report, and then the HSUPA dispatching priority to UE is provided with, with priority scheduling UE;
Device according to transmitting RLC information in the HSPA system of the foregoing description; Be used to indicate the identification information that returns the uplink state report to judge because whether 20 pairs of judging units receive to receive in the professional packet of HSDPA to carry; And by priority the unit is set the receiving terminal UE (promptly returning the professional UE of HSUPA of uplink state report) of the packet that comprises this identification information is made as HSUPA priority scheduling user, when sending the RLC information that carries the uplink state report at this UE to its priority scheduling.Therefore under HSPA system multi-user environment, improved the time delay of uplink state report, thereby avoided HSDPA professional, improved the HSPA performance of services because of not receiving resetting or call drop that the uplink state report returned takes place.
Further, in the HSPA of the foregoing description system, in the device of transmitting RLC information, also comprise:
Detecting unit is provided with the unit with priority and is connected, and is used to detect UE and whether has disposed status report and forbid timer; Correspondingly; If detect and know that UE has disposed status report and forbidden timer; Then the timer status query request of sending the unit is set status report is forbidden that the activation/closed condition of timer detects, and testing result is sent to priority the unit is set according to priority;
Priority is provided with the unit and also was used for before the HSUPA dispatching priority to UE is provided with, to detecting unit transmission timer status query request; If according to testing result know UE not configuration status accounting forbid timer, priority then is set, if status report forbids that timer is a closed condition, then timer is forbidden in the state of activation report, and priority is set, with priority scheduling UE.
Further, in the device of transmitting RLC information, this judging unit specifically comprises in the HSPA of the foregoing description system:
Acquisition module is used to obtain the data head flag of RLC PDU;
Detection module is used for the Polling territory of data leader knowledge position is detected, and testing result is sent to judge module;
Judge module is used for if the corresponding value in Polling territory is 1, then to priority the unit is set and sends RLCPDU and carry and be used to indicate UE to return the judged result of the identification information of uplink state report.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (6)
1. a high-speed packet inserts the method for transmitting Radio Link control RLC information in the HSPA system, it is characterized in that, comprising:
Insert the professional user equipment (UE) of HSPA to high-speed packet and send the professional packet of high-speed downlink packet access HSDPA; If judging to carry in the RLC control pdu RLC PDU information of knowing said packet is used to indicate said UE to return the identification information of uplink state report; Then the HSUPA dispatching priority to said UE is provided with, with the said UE of priority scheduling;
To said UE allocation of channel resources may, send the RLC PDU information that carries said uplink state report through said channel resource according to the HSUPA dispatching priority of said setting for said UE.
2. the method for transmitting RLC information is characterized in that in the HSPA according to claim 1 system, and the HSUPA dispatching priority of said UE is provided with, and specifically comprises with the step of the said UE of priority scheduling:
Whether detect said UE has disposed status report and has forbidden timer;
Know that said UE does not dispose said status report and forbids timer if detect, then the HSUPA dispatching priority to said UE is provided with, with the said UE of priority scheduling;
Know that said UE has disposed said status report and forbidden timer if detect, then said status report is forbidden that the activation/closed condition of timer detects;
Forbid that timer is a closed condition if said status report is known in detection, then activate said status report and forbid timer, and said HSUPA dispatching priority is set, with the said UE of priority scheduling;
If knowing said status report, detection forbids that timer is a state of activation, does not then change said HSUPA dispatching priority.
3. the method for transmitting RLC information in the HSPA according to claim 1 system; It is characterized in that; Saidly be used to indicate said UE to return the identification information of uplink state report if judge to carry among the RLC PDU know said packet; Then the HSUPA dispatching priority to said UE is provided with, and specifically comprises with the step of the said UE of priority scheduling:
Obtain the data head flag of said RLC PDU;
Polling territory in the said data head flag is detected;
Know that the corresponding value in said Polling territory is 1 if detect, then the HSUPA dispatching priority to said UE is provided with, with the said UE of priority scheduling.
4. the device of transmitting RLC information in the HSPA system is characterized in that, comprises that transmitting element, judging unit, priority are provided with unit and scheduling unit, wherein:
Said transmitting element is used for sending the professional packet of HSDPA to the professional UE of HSPA;
Said judging unit is used for judging whether the RLC PDU of said packet carries is used to indicate said UE to return the identification information of uplink state report;
Said priority is provided with the unit and is connected with said judging unit; Be used for if judge that know that said PDU carries is used to indicate said UE to return the identification information of uplink state report; Then the HSUPA dispatching priority to said UE is provided with, with the said UE of priority scheduling;
Said scheduling unit is provided with the unit with said priority and is connected, and is used for HSUPA dispatching priority according to said setting to said UE allocation of channel resources may, sends the RLC PDU information that carries said uplink state report through said channel resource for said UE.
5. the device of transmitting RLC information is characterized in that in the HSPA according to claim 4 system, also comprises:
Detecting unit is provided with the unit with said priority and is connected, and is used to detect said UE and whether has disposed status report and forbid timer; Correspondingly; If detect and know that said UE has disposed said status report and forbidden timer; Then the timer status query request of sending the unit is set said status report is forbidden that the activation/closed condition of timer detects, and testing result is sent to said priority the unit is set according to said priority;
Said priority is provided with the unit and also was used for before the HSUPA dispatching priority to said UE is provided with, to said detecting unit transmission timer status query request; If know that according to said testing result said UE does not dispose said status report and forbids that timer then is provided with said priority; If said status report forbids that timer is a closed condition; Then activate said status report and forbid timer, and said priority is set, with the said UE of priority scheduling.
6. according to the device of transmitting RLC information in claim 4 or the 5 described HSPA systems, it is characterized in that said judging unit comprises:
Acquisition module is used to obtain the data head flag of said RLC PDU;
Detection module is used for the Polling territory of said data head flag is detected, and said testing result is sent to judge module;
Judge module is used for if the corresponding value in said Polling territory is 1, then to said priority the unit is set and sends said RLC PDU and carry and be used to indicate said UE to return the judged result of the identification information of uplink state report.
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| CN102487533B (en) | 2015-02-04 |
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