CN1933430A - Method for measuring IUB interface usable bandwidth and interface rate - Google Patents
Method for measuring IUB interface usable bandwidth and interface rate Download PDFInfo
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- CN1933430A CN1933430A CN 200510125939 CN200510125939A CN1933430A CN 1933430 A CN1933430 A CN 1933430A CN 200510125939 CN200510125939 CN 200510125939 CN 200510125939 A CN200510125939 A CN 200510125939A CN 1933430 A CN1933430 A CN 1933430A
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Abstract
A method for measuring usable bandwidth of IUB interface includes utilizing NodeB to confirm number of current access user and occupation- information of current IUB interface resource, obtaining bandwidth variation value caused by each user at IUB interface and summing up these said variation values to obtain total bandwidth variation, confirming usable bandwidth of current IUB interface according to usable bandwidth information in resource occupation-information of last IUB interface and obtained total bandwidth variation.
Description
Technical field
The present invention relates to IUB interface bandwidth fields of measurement, relate in particular to the method for a kind of IUB of measurement interface available bandwidth and interface rate.
Background technology
HSUPA (High Speed Uplink Packet Data Access, the access of high speed uplink bag data) technology is that 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) is organized in a kind of new technology that improves up transfer rate of introducing in the R6 agreement.This technology is in order to improve the up average throughput and the capacity of single user and system, so that carry out multimedia service and bag transfer of data better, adopt up fast dispatch, HARQ (the HybridAutomatic Retransmission Quest of NodeB (base station), compound automatic repeat requests) and the short frame technique of 2ms, user's up throughput obtains to improve greatly, support peak-peak speed 5.76Mbps in theory, the simultaneity factor up-link capacity also obtains very big lifting.
The protocol architecture of HSUPA is illustrated in fig. 1 shown below, UE (User Equipment, subscriber equipment) side logic channel DTCH (Dedicated Traffic Channel, Dedicated Traffic Channel)/DCCH (Dedicated Control Channel, Dedicated Control Channel) data are by MAC-d (medium access control-d), MAC-es/e is (after the entity handles of medium access control-es/e), be carried to E-DCH (Enhanced-Dedicated Channel, the dedicated channel that strengthens) on the transmission channel, and the uplink physical channel E-DPDCH that videos (Enhanced-Dedicated Physical Data Channel, the Dedicated Physical Data Channel that strengthens) on, issue UTRAN (Universal TerrestrialRadio Access Network by eating dishes without rice or wine, the general areas wireless access network), and by TNL (switched transport network layer) chain of command flow process set up, management and dismounting virtual connections.
Wherein the UTRAN side comprises SRNC (Serving Radio Network Controller, service wireless network controller) and DRNC (Drift Radio Network Controller, floating radio network controller), wherein, the data that SRNC is responsible between core net and the user transmit and Iu interface RANAP (Radio Access Network Application Part, Radio Access Network Application Part) signaling passes on and receives, be responsible for carrying out Radio Resource control, be responsible for the data of air interface are carried out the processing of L2 (MAC and RLC) layer, and carry out basic radio resource management operations, as switch decision, the parameter of exterior ring power control and RAB (Radio Access Bearer, RAB) is to the conversion of the transport channel parameters of eating dishes without rice or wine etc.; DNRC is other RNC beyond the SRNC, control the sub-district that this user uses, if desired, DRNC can carry out grand diversity and merge, unless this user uses Common transport channel, DRNC can not carry out the L2 layer of user face data to be handled, and just the route of passing through the Iur interface of Iub interface data transparency is passed to SNRC, and a user's DRNC can be more than one.
UE is connected by the Uu interface with NodeB; DRNC is connected by Iub interface with NodeB, signaling and data between Iub transmission DRNC and the NodeB comprise information such as transmission resource management, NodeB logic maintenance and management, SIM system information management, common signal channel management, dedicated channel management, shared channel management, timing and management by synchronization.In UTRAN inside, SRNC among the RNS (RadioNetwork Subsystem, RNS) and DRNC can pass through Iur interactive interfacing information, and described Iur interface can be the directly continuous of physics between the RNC or pass through suitable transmission network and realize.
MAC-d represents to handle the dedicated logical channel of distributing to a UE and MAC (Medium Access Control, the medium access control) entity of dedicated transmission channel, MAC-d of each UE among Fig. 1.MAC-d of corresponding each UE of UTRAN; MAC-es, MAC-e entity are that WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) system introduces after the HSUPA MAC layer entity of increase.Wherein in order to support the fast dispatch of NodeB, the MAC-e entity of UTRAN side moves down into NodeB; In order to support the grand diversity of HSUPA, MAC-es is positioned at SRNC.Increase E-DCH (Enhanced-Dedicated Channel, the dedicated channel of enhancing) transmission channel between MAC layer and the physical layer and carry transmission data block.Physical layer has increased several physical channels, uplink physical channel increases E-DPCCH (Enhanced-Dedicated Physical Control Channel, the Dedicated Physical Control Channel that strengthens) and E-DPDCH, down physical channel increases E-AGCH (Enhanced-Absolute Grant Channel, the absolute scheduling channel that strengthens), E-RGCH (Enhanced-Relative Grant Channel, the relative scheduling channel that strengthens), E-HICH (Enhanced-Hybrid ARQ Indicator Channel, the compound retransmission indicating chanel of enhancing).Up E-DPDCH is used to carry the transmission data of HSUPA user uplink; Up E-DPCCH carries the signaling of following of demodulating data channel E-DPDCH.Descending E-AGCH is a common signal channel, is served the maximum available transmission rate (perhaps power) of sub-district indication UE at E-DCH wireless connections place by the user; Descending E-RGCH is a dedicated channel, the fastest can be by the uplink speed of 2ms time rapid adjustment UE; Descending E-HICH is a dedicated channel, ACK/NACK (Acknowledge/Not Acknowledge) information whether feedback user receiving process data are correct.
Wherein the MAC-es/e entity mainly is responsible for MAC-dPDU (Protocol Data Unit, the protocol Data Unit) data multiplex from different MAC-d data flow is generated a MAC-e PDU data block, and each TTI can only transmit 1 MAC-e PDU data block.The structure of the MAC-es/e entity of UE side as shown in Figure 2.NodeB receives from a plurality of MAC-e PDU of different UEs and according to different MAC-d stream, send to the corresponding MAC-es layer of RNC on the IUB mouth.By just estimating of the influence of UU mouth speed after FP (Frame Protocol, Frame Protocol) and the AAL2 format conversion to the IUB port band width.The bearing protocol of customer service is used for the Business Stream of bearing call in the network, and the carry information to be passed of Iub interface is called Frame Protocol, and this scheme is pressed the AAL2 protocol encapsulation with information to be passed, as the load of UDP, transmits in traditional IP network then.
Because the UU mouth speed theory of HSUPA can reach 5.76Mbps, the speed of IUB interface will become the bottleneck of systematic function, at this moment just need NodeB that flow control function at IUB is provided.In the prior art, utilize the flow control function of Flow Control scheduling realization usually, and the IUB resource occupation information of NodeB is the important input parameter of IUB Flow Control dispatching algorithm, directly influences scheduling performance to IUB.
Yet be Xms (X is the 10e2 order of magnitude) reporting period of IUB resource occupation information in the prior art, and the MAC-e entity of NodeB utilizes Xms to be periodic report IUB resource occupation information, the speed that control UE can send at the UU mouth.Because the IUB resource occupation information updating cycle is Xms, be far longer than the possible minimum period 2ms of NodeB scheduling, when utilizing IUB port band width information to dispatch, control cycle to UE is longer, possibly can't estimate the situation of change of IUB port band width accurately, cause that frequent IUB is congested or occupancy is low excessively, influence the IUB fluid control effect.
Summary of the invention
The problem to be solved in the present invention provides a kind of method of the IUB of measurement interface available bandwidth, logical this method can more accurately be estimated IUB bandwidth change situation in IUB bandwidth measurement period interval time, changing significantly appearred in measuring period in the IUB port band width in the prior art to overcome, IUB bandwidth unsteadiness, the not high defective of scheduling accuracy.
For addressing the above problem, the invention provides a kind of method of the IUB of measurement interface available bandwidth, may further comprise the steps:
A, NodeB determine the user's number and the current I UB interface resource occupied information of current access;
B, NodeB obtain the IUB interface bandwidth changing value that each user produces;
C, NodeB sue for peace described IUB interface bandwidth changing value, obtain IUB interface total bandwidth and change;
D, NodeB change definite current I UB interface available bandwidth according to available bandwidth information in the last IUB interface resource occupied information and described IUB interface total bandwidth.
The IUB interface bandwidth changing value that described each user of step B produces is determined by the ratio of each user's maximum transport format and this user's Transmission Time Interval.
Described user's maximum transport format obtains by strengthening the transformat directive.
Each strengthens corresponding one of transformat combination directive and strengthens transformat combination, described enhancing transformat combination by speed from low to high sequence arrangement or by speed sequence arrangement from high to low.
Described each user's enhancing transformat combination directive is stored in the user list of NodeB.
Corresponding user ID of each user's enhancing transformat combination directive in the user list of NodeB.
Also comprise after the step D:
After NodeB received new IUB interface resource occupied information, the available bandwidth information in this new IUB interface resource occupied information was updated to current I UB interface available bandwidth.
In order to solve in the prior art, can't prevent the defective that the IUB mouth is frequently congested or occupancy is low excessively by adjusting the data transmission capabilities of UE at the UU mouth, the present invention also provides a kind of method of the IUB of raising interface rate, may further comprise the steps:
A, IUB interface resource occupied information report cycle at interval between, NodeB estimates the changing value that each user IUB interface bandwidth produces by the ratio of each user's maximum transport format and this user's Transmission Time Interval, obtains the available bandwidth of current I UB interface; After NodeB received new IUB interface resource occupied information, the available bandwidth information in this new IUB interface resource occupied information was updated to the IUB interface available bandwidth;
B, NodeB adjust the transmission rate of Uu interface according to current I UB interface available bandwidth.
Step b further comprises:
If current I UB interface available bandwidth greater than predefined first thresholding, then improves the transmission rate of Uu interface;
If current I UB interface available bandwidth then reduces the transmission rate of Uu interface less than preestablishing second thresholding;
If current I UB interface available bandwidth is less than preestablishing first thresholding, and, then keep the transmission rate of Uu interface greater than second thresholding;
Wherein, described first thresholding is greater than second thresholding.
Described first thresholding and described second thresholding are according to the resource congestion and the occupancy adjustment of IUB interface.
Compared with prior art, the present invention has the following advantages:
The present invention is in IUB bandwidth measurement period interval time, utilize ETFCI (Enhanced-TransportFormat Combination Indicator, strengthen the transformat combination indication) word estimation IUB bandwidth change situation, make accurately to measure the variation significantly that the IUB port band width occurs in measuring period.
Further, the present invention utilizes NodeB scheduling output and IUB bandwidth change situation to estimate, adjusts the data transmission capabilities of UE at the UU mouth, prevents that the IUB mouth is frequently congested or occupancy is low excessively, increases IUB bandwidth occupancy stability, and has increased the scheduling accuracy.
Description of drawings
Fig. 1 is the protocol architecture figure of HSUPA;
Fig. 2 is a user side MAC layer structure chart;
Fig. 3 is the flow chart that the present invention measures the method for IUB interface available bandwidth;
Fig. 4 is the user list that NodeB safeguards;
Fig. 5 is the frame structure of E-DPCCH.
Embodiment
Following the present invention will be in conjunction with the accompanying drawings, and optimum implementation of the present invention is described in detail.At first it is to be noted, the implication of the term of using among the present invention, words and claim can not only only limit to its literal and common implication and go to understand, the implication and the notion that also comprise and then conform to technology of the present invention, this is because as the inventor, to suitably provide the definition of term, so that the present invention is carried out the most appropriate description.Therefore, the configuration that provides in this explanation and the accompanying drawing is first-selected embodiment of the present invention, rather than will enumerates all technical characteristics of the present invention.The present invention will recognize to also have the various equivalent scheme or the modifications that can replace the present invention program.
Basic principle of the present invention may further comprise the steps as shown in Figure 3:
Step s101, NodeB determine the user's number and the current I UB interface resource occupied information of current access.Wherein, each user's enhancing transformat directive is stored in the user list of NodeB, corresponding user ID of each user's enhancing transport format combination set in the user list of NodeB, as shown in Figure 4.Described current I UB interface resource occupied information is that NodeB carves the IUB resource occupation information of receiving report at a time, comprises the total bandwidth of IUB interface, available bandwidth etc., and its update cycle is X ms (X is the 10e2 order of magnitude).
Step s102, NodeB obtain the IUB interface bandwidth changing value that each user produces.Wherein, the IUB interface bandwidth changing value that produces of each user is to utilize the enhancing transformat directive in each user's the adjacent Transmission Time Interval to obtain.Because NodeB can obtain the pairing enhancing transformat of each user ID directive according to user list, can determine the transformat that current transmission time uses by this enhancing transformat directive.In conjunction with absolute scheduling in the schedule information of current transmission and relative dispatching command, the maximum transport format that each UE may use when NodeB can know that next TTI arrives by enhancing transformat directive, utilize the length difference of next maximum transport format of UE and current transformat and the ratio of Transmission Time Interval to obtain the bandwidth change value that each UE produces, above-mentioned maximum transport format is the length of each user data frame just.
Step s103, NodeB sues for peace described IUB interface bandwidth changing value, obtains IUB interface total bandwidth and changes.
Step s104, NodeB changes definite current I UB interface available bandwidth according to available bandwidth information in the last IUB interface resource occupied information and described IUB interface total bandwidth.The above-mentioned IUB interface total bandwidth that adds deduct on the basis of last IUB interface available bandwidth changes, and promptly can obtain the available bandwidth of current I UB interface.After NodeB received new IUB interface resource occupied information, available bandwidth information was updated to current I UB interface available bandwidth in this new IUB interface resource occupied information.
The length that strengthens the transformat directive described in the present invention is 10bit, when not enough 10bit, mend 0 in MAC floor height position, and with effective TFC (Transport Format Combination, strengthen transformat combination) be to concern one to one, and described TFC by speed from low to high sequence arrangement or by speed sequence arrangement from high to low.The TFCI word is distributed on each frame of TTI, and concrete frame structure as shown in Figure 5.TFCI word indication current effective TFC combination when user and network carry out information interaction, determines how to decode with this TFCI information, separates multiple connection and transmit the data that receive on suitable transmission channel.Adopt in system under the situation of normal mode communication, during up transmission, information mapping behind the TFCI coding sends to the TFCI territory (TFCI field) of physical channel DPCCH, during descending transmission, information mapping behind the TFCI coding sends to the TFCI territory of physical channel DPCH, and the length in TFCI territory determines with the time slot format of high-rise appointment.
Below with the computational process of an instantiation description of step s103 and step s104:
If insert N HSUPA user under the current NodeB altogether, NodeB obtains K user UE according to the user list of safeguarding
kCurrent time is corresponding to ETfci
k, through after the scheduler handle, UE
kNext TTI can with transformat be ETfci
k'.Can obtain UE
kChanging value Δ IubBw to the variation of IUB port band width
k(as Δ IubBw
kIncrease greater than the null representation bandwidth; As Δ IubBw
kReduce less than the null representation bandwidth).
Then IUB mouth available bandwidth upgrades as follows when next TTI arrives:
Wherein, IUB
LastBe the IUB available bandwidth that the last TTI of this user estimates, IUB
UptIUB available bandwidth for this user's current TTI estimation.
The invention also discloses a kind of method of the IUB of optimization interface efficient, may further comprise the steps:
A, IUB interface resource occupied information report cycle at interval between, by the changing value of estimating that each user produces the IUB interface bandwidth, that is: the maximum transport format that each UE may use when NodeB knew that by strengthening the transformat directive next TTI arrives, utilize the length difference of next maximum transport format and current transformat and the ratio of Transmission Time Interval to estimate the bandwidth change value that each UE produces, obtain the available bandwidth of current I UB interface; After NodeB received new IUB interface resource occupied information, available bandwidth information was updated to the IUB interface available bandwidth in this new IUB interface resource occupied information;
B, NodeB adjust the transmission rate of Uu interface according to current I UB interface available bandwidth.
Step b further comprises: if current I UB interface available bandwidth greater than predefined first thresholding, then improves the transmission rate of Uu interface; If current I UB interface available bandwidth then reduces the transmission rate of Uu interface less than preestablishing second thresholding; If current I UB interface available bandwidth is less than preestablishing first thresholding, and, then keep the transmission rate of Uu interface greater than second thresholding; Wherein, described first thresholding is greater than second thresholding.Described first thresholding and described second thresholding are according to the resource congestion and the occupancy adjustment of IUB interface, for example, if the resource congestion of IUB interface or occupancy are very high, then should suitably improve second thresholding and/or reduce by first thresholding, so that slow down adjustment to the transmission rate of Uu interface; If the resource of IUB interface does not have congested or occupancy is not high, then should suitably reduce by first thresholding and/or improve second thresholding, so that quickening is to the adjustment of the transmission rate of Uu interface.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of method of the IUB of measurement interface available bandwidth is characterized in that, may further comprise the steps:
A, NodeB determine the user's number and the current I UB interface resource occupied information of current access;
B, NodeB obtain the IUB interface bandwidth changing value that each user produces;
C, NodeB sue for peace described IUB interface bandwidth changing value, obtain IUB interface total bandwidth and change;
D, NodeB change definite current I UB interface available bandwidth according to available bandwidth information in the last IUB interface resource occupied information and described IUB interface total bandwidth.
2, measure the method for IUB interface available bandwidth according to claim 1, it is characterized in that, the IUB interface bandwidth changing value that described each user of step B produces is determined by the ratio of each user's maximum transport format and this user's Transmission Time Interval.
As measuring the method for IUB interface available bandwidth as described in the claim 2, it is characterized in that 3, described user's maximum transport format obtains by strengthening the transformat directive.
4, as measuring the method for IUB interface available bandwidth as described in the claim 3, it is characterized in that, each strengthens corresponding one of transformat combination directive and strengthens transformat combination, described enhancing transformat combination by speed from low to high sequence arrangement or by speed sequence arrangement from high to low.
5, as measuring the method for IUB interface available bandwidth as described in the claim 3, it is characterized in that described each user's enhancing transformat combination directive is stored in the user list of NodeB.
6, as measuring the method for IUB interface available bandwidth as described in the claim 5, it is characterized in that corresponding user ID of each user's enhancing transformat combination directive in the user list of NodeB.
7, measure the method for IUB interface available bandwidth according to claim 1, it is characterized in that, also comprise after the step D:
After NodeB received new IUB interface resource occupied information, the available bandwidth information in this new IUB interface resource occupied information was updated to current I UB interface available bandwidth.
8, a kind of method that improves the IUB interface rate is characterized in that, may further comprise the steps:
A, IUB interface resource occupied information report cycle at interval between, NodeB estimates the changing value that each user IUB interface bandwidth produces by the ratio of each user's maximum transport format and this user's Transmission Time Interval, obtains the available bandwidth of current I UB interface; After NodeB received new IUB interface resource occupied information, the available bandwidth information in this new IUB interface resource occupied information was updated to the IUB interface available bandwidth;
B, NodeB adjust the transmission rate of Uu interface according to current I UB interface available bandwidth.
9, as improving the method for IUB interface rate as described in the claim 8, it is characterized in that step b further comprises:
If current I UB interface available bandwidth greater than predefined first thresholding, then improves the transmission rate of Uu interface;
If current I UB interface available bandwidth then reduces the transmission rate of Uu interface less than preestablishing second thresholding;
If current I UB interface available bandwidth is less than preestablishing first thresholding, and, then keep the transmission rate of Uu interface greater than second thresholding;
Wherein, described first thresholding is greater than second thresholding.
10, as improving the method for IUB interface rate as described in the claim 9, it is characterized in that described first thresholding and described second thresholding are according to the resource congestion and the occupancy adjustment of IUB interface.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101159903B (en) * | 2007-10-23 | 2011-01-05 | 华为技术有限公司 | Method and device of preventing and processing transmission carrying congestion |
| CN101635952B (en) * | 2008-07-21 | 2012-02-22 | 电信科学技术研究院 | Method and device for controlling congestion in mobile communication system |
| CN102843704A (en) * | 2011-06-23 | 2012-12-26 | 中兴通讯股份有限公司 | Method and system for obtaining base station transmission bandwidth threshold by RNC (Radio Network Controller) |
| CN111107606A (en) * | 2019-01-18 | 2020-05-05 | 维沃软件技术有限公司 | Interface availability reporting and indicating method and equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100499418C (en) * | 2003-04-17 | 2009-06-10 | 中兴通讯股份有限公司 | Method of determining radio link frame deviation in WCDMA system |
| CN100542348C (en) * | 2005-03-31 | 2009-09-16 | 上海华为技术有限公司 | Service signal transmission rate adjusting method and system thereof |
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2005
- 2005-11-30 CN CNB2005101259391A patent/CN100508470C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101159903B (en) * | 2007-10-23 | 2011-01-05 | 华为技术有限公司 | Method and device of preventing and processing transmission carrying congestion |
| CN101635952B (en) * | 2008-07-21 | 2012-02-22 | 电信科学技术研究院 | Method and device for controlling congestion in mobile communication system |
| CN102843704A (en) * | 2011-06-23 | 2012-12-26 | 中兴通讯股份有限公司 | Method and system for obtaining base station transmission bandwidth threshold by RNC (Radio Network Controller) |
| CN111107606A (en) * | 2019-01-18 | 2020-05-05 | 维沃软件技术有限公司 | Interface availability reporting and indicating method and equipment |
| CN111107606B (en) * | 2019-01-18 | 2021-07-20 | 维沃软件技术有限公司 | Interface availability reporting and indicating method and equipment |
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| CN100508470C (en) | 2009-07-01 |
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