CN101005655A - Soft switching property evaluating method for supporting HSUPA and mobile terminal - Google Patents
Soft switching property evaluating method for supporting HSUPA and mobile terminal Download PDFInfo
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- CN101005655A CN101005655A CNA2006100013897A CN200610001389A CN101005655A CN 101005655 A CN101005655 A CN 101005655A CN A2006100013897 A CNA2006100013897 A CN A2006100013897A CN 200610001389 A CN200610001389 A CN 200610001389A CN 101005655 A CN101005655 A CN 101005655A
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Abstract
By representing the cell's supporting capability to HSUPA service in the requirement of soft-switch performance, the consistence between soft-switch performance estimation result and the soft-switch behavior is kept so as to be capable of accurately estimating the soft-switch performance of the terminal. The invention provides multi approaches for setting the requirement of soft-switch performance, which can be used in all situations occurring in the soft-switch process.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to soft switching property evaluating method and the portable terminal of a kind of HSUPA of support.
Background technology
UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) be the 3-G (Generation Three mobile communication system) that adopts WCDMA (Wideband Code Division Multiple Access (WCDMA)) air interface technologies, UMTS mainly organizes among the 3GPP in the WCDMA/GSM global standardsization and develops.
Development along with the 3G (Third Generation) Moblie technology, people no longer are satisfied with speech business to the demand of mobile communication, because 3-G (Generation Three mobile communication system) can provide than the more service of high data rate of second generation mobile communication system, so, a large amount of multimedia services emerge, and services such as Internet network are uploaded, browsed at a high speed to multimedia service such as visual telephone, picture.Strengthen up HSUPA (High SpeedUplinkPacketAccess, the high speed uplink bag inserts) in order to strengthen up-link capacity, to improve the user uplink performance, in 3-G (Generation Three mobile communication system), having introduced.
HSUPA has adopted three kinds of major techniques, promptly HARQ (physical layer mix retransmit), transmit based on the fast dispatch of Node B and the short frame of 2msTTI (Transmission Time Interval).
HARQ mechanism has effectively improved the probability of the correct demodulation of receiving terminal by add more redundant information in each retransmission of information.The HARQ that uses in the UMTS system is divided into Chase Combine (follow the trail of and merge) and two kinds of merging modes of Incremental Redundant Combination (incremental redundancy merging), when ChaseCombine merges fixedly RV Index (redundant version number) be 0, RV Index can change along with RSN (receive sequence number) when Incremental RedundantCombination merged, RSN is 0 when just passing, and adds 1 when retransmitting.RV is a redundancy version parameters, and RV is the parameter of using in control rate-matched phase process.The definition of RV parameter is as shown in table 1.
Table 1
| ?E-DCH?RV?Index | ?s | ?r |
| ?0 | ?1 | ?0 |
| ?1 | ?0 | ?0 |
| ?2 | ?1 | ?1 |
| ?3 | ?0 | ?1 |
In the table 1, the s parameter be used for selecting be system bits preferentially or check digit preferential, if s is 1, the expression system bits is preferential, rate-matched preferentially satisfies system bits, if s is 0, the expression check digit is preferential, rate-matched preferentially satisfies check digit.The r parameter is with deciding repeating algorithm or the bit original position of the algorithm that punches.
UE can be simultaneously and the connection of the access point of several UTRAN (Universal Terrestril Radio Access Network, Universal Terrestrial Radio Access Network road), is called soft handover.The soft handover function comprises the activating set updating process.
In HSUPA, when UE is in soft handover, can be simultaneously and four sub-districts maintenance communication links, these sub-districts all belong to Active Set.Activating set updating is exactly to upgrade the communication link Active Set that keeps between UE and the UTRAN.Activating set updating comprises: add, change or reduce wireless communication link in Active Set.UE carries out the activating set updating operation and issues Active Set Update (activating set updating) information Control by UTRAN.
The performance requirement that UE carries out activating set updating mainly comprises following 2 points:
1. activating set updating postpones to require less than 50+10*KC+100*OC ms, and wherein, KC is a sub-district number known in the activating set updating information, and OC is unknown sub-district number.Activating set updating postpones to be defined as UE and receives Active set update information that UTRAN issues or UE and begin to carry out time of activating set updating process and UE and successfully use wireless communication link in the Active set update information the time between time of power control of carrying out to be called Active Set time of delay.
2.UE in upgrading the Active Set process, can not interrupt data flow.
The difference that merges mode according to HSUPA, the base station can be divided into three kinds of modes: chase only (only supporting to follow the trail of redundant merging), IR only (only supporting incremental redundancy to merge) and chase+IR (support simultaneously to follow the trail of and merge and the incremental redundancy merging) mode, the base station of these three kinds of modes promptly has the base station of three kinds of abilities.The HARQ mode that base station and terminal adopt is notified to base station and terminal respectively after being determined by RNC, sends and receives information thereby terminal and base station can be adopted in the same way.
At present, also there is not clear and definite regulation RNC whether can know the HARQ ability of base station in the UMTS system.When terminal was carried out soft handover in HSUPA, the HARQ ability of target cell base station and the HARQ ability of former cell base station may be fully different, had chase only ability as the base station of Target cell, and former cell base station has IR only ability.Like this, the terminal uplink information that uses the HARQ mode of former sub-district to launch can't be in the Target cell demodulation.
Owing to the uplink information that two base station ability differences, terminals use former sub-district HARQ mode to launch can't be in the Target cell demodulation, terminal is only supported can't set up real HSUPA link at Target cell when HSUPA is professional when these two minizones execution soft handovers, can't successfully carry out soft handover, the activating set updating performance requirement can't be weighed this situation.
Summary of the invention
The objective of the invention is to, soft switching property evaluating method and the portable terminal of a kind of HSUPA of support are provided, by in soft switching property requires, embodying the tenability of sub-district to the HSUPA business, make the soft switching property of terminal consistent, thereby make the present invention carry out soft switching property assessment accurately terminal with the soft handover behavior.
For achieving the above object, a kind of soft switching property evaluating method of supporting HSUPA provided by the invention comprises:
A, the tenability of HSUPA business is provided with the soft switching property requirement according to the sub-district;
B, require the soft switching property assessment is carried out in the soft handover behavior of terminal according to described soft switching property.
Described soft switching property requires to comprise: one or more in the link that terminal is supported simultaneously, activating set updating, the data flow performance.
Described sub-district comprises the tenability of HSUPA business: only support to follow the trail of redundancy merging chase only, only support incremental redundancy to merge IR only and support to follow the trail of merging simultaneously and incremental redundancy merging chase+IR.
Described step a comprises:
Sub-district in the terminal Active Set to the tenability of HSUPA business not simultaneously, the link that allows terminal to support simultaneously is not an effective link simultaneously.
Described step a comprises:
Sub-district in the terminal Active Set allows the link of terminal support can not carry out power control simultaneously to the tenability of HSUPA business not simultaneously.
Described step a comprises:
Sub-district in the terminal Active Set to the tenability of HSUPA business not simultaneously, the activating set updating time delay predetermined time interval of the terminal during soft switching property requires.
Described predetermined time interval comprises: T * NC, and wherein, T is terminal change HARQ launch time, NC is 0 or 1.
Described step a comprises:
Sub-district in the terminal Active Set reduces the data performance requirement of soft switching property in requiring to the tenability of HSUPA business not simultaneously.
Described step a comprises:
Sub-district in the terminal Active Set allows the flow interruption of terminal emission to the tenability of HSUPA business not simultaneously.
The present invention also provides a kind of portable terminal, comprising:
Store in the memory module according to the soft switching property requirement of sub-district the tenability setting of HSUPA business;
The soft switching property evaluation module is used for requiring the soft switching property assessment is carried out in the soft handover behavior of terminal according to the soft switching property that memory module is stored.
Description by technique scheme as can be known, by in soft switching property requires, demonstrating fully the tenability of sub-district to the HSUPA business, the soft switching property assessment result and the soft handover behavior of terminal are consistent, thereby make the present invention carry out soft switching property assessment accurately terminal; The invention provides the multiple method that the soft switching property requirement is set, can be applicable to the various situations in the soft switching process; Thereby realized the raising soft switching property assessment scope of application by technical scheme provided by the invention, improved the purpose of soft switching property assessment result accuracy.
Description of drawings
Fig. 1 is the portable terminal schematic diagram of the embodiment of the invention;
Fig. 2 is the soft handover method schematic diagram of the embodiment of the invention.
Embodiment
The present invention need be provided with the soft switching property requirement to the tenability of HSUPA business according to the sub-district, the soft switching property assessment is carried out in the soft handover behavior of terminal, and the terminal in soft handover performance requirement generally includes: the link that terminal is supported simultaneously, activating set updating, data flow performance.The present invention can be provided with one or more in link that terminal supports simultaneously, activating set updating, the data flow performance to the tenability of HSUPA business according to the sub-district.Here, the sub-district comprises the tenability of HSUPA business: the base station has chase only ability, the base station has IR only ability and the base station has the chase+IR ability.
When the tenability of HSUPA business being provided with the link that terminal supports simultaneously according to the sub-district, the terminal maximum still can keep 4 links simultaneously, but consider base station ability, these 4 links may not be applied to obtain the HSUPA data fully, that is to say, sub-district in the terminal Active Set to the tenability of HSUPA business not simultaneously, the link that allows terminal to support simultaneously is not an effective link simultaneously.
When the tenability of HSUPA business being provided with activating set updating according to the sub-district, terminal still can adopt existing activating set updating time performance, but consider base station ability, some link in the Active Set may not be successfully applied to power control, that is to say, sub-district in the terminal Active Set allows the link of terminal support can not carry out power control simultaneously to the tenability of HSUPA business not simultaneously.
When the tenability of HSUPA business being provided with activating set updating according to the sub-district, also can be with the activating set updating time performance delay scheduled time interval of terminal, the predetermined time interval that postpones can be T*NC, T is for changing HARQ launch time, if terminal need not be changed HARQ, NC=0 then, otherwise NC=1.Like this, the computational methods of the activating set updating time of terminal are: 50+10*KC+100*OC ms+T*NC.
When the tenability of HSUPA business being provided with the data flow performance according to the sub-district, the data stream transmission of terminal can not interrupted, but, data performance may reduce, like this, sub-district in the terminal Active Set needs to reduce the data performance requirement of soft switching property in requiring to the tenability of HSUPA business not simultaneously.
When according to the sub-district tenability of HSUPA business being provided with the data flow performance, the data stream transmission of terminal may be interrupted, and like this, the sub-district in the terminal Active Set allows the flow interruption of terminal emission to the tenability of HSUPA business not simultaneously.
After the soft switching property that is provided with terminal by foregoing description requires, support the HSUPA business when terminal, trigger soft switching process, terminal is carried out the HSUPA emission under soft switching property requires.
Portable terminal with above-mentioned soft switching property evaluating method provided by the invention as shown in Figure 1.Portable terminal comprises among Fig. 1: memory module and soft switching property evaluation module.
Store in the memory module according to the soft switching property requirement of sub-district the tenability setting of HSUPA business.The soft switching property of storing in the memory module has required to demonstrate fully the tenability of sub-district to the HSUPA business, and the soft switching property in the memory module requires the description in concrete as the above-mentioned method.
The soft switching property evaluation module is mainly used in according to the soft switching property of storing in the memory module and requires the soft switching property assessment is carried out in the soft handover behavior of terminal, like this, the assessment result of soft switching property evaluation module can be consistent with the soft handover behavior, thereby guaranteed the accuracy of soft switching property assessment result.
The soft switching property evaluating method of foregoing description goes for existing soft switching process, also goes for following soft switching process of the present invention:
Soft handover method one, the HARQ mode of target cell base station and the HARQ mode of former cell base station are adjusted into identical HARQ mode.
At first, terminal determines that the HARQ mode of target cell base station is different from the HARQ mode of current area base station before carrying out soft handover, is chase only as the HARQ mode of target cell base station, and the HARQ mode of current area base station is IR only.Here, the information of the HARQ mode of the HARQ mode of the terminal target cell base station that can issue according to RNC and target cell base station determines whether the HARQ mode of target cell base station is different from the HARQ mode of current area base station.
The HARQ mode of target setting cell base station can be adjusted, at this moment, the HARQ mode of target cell base station can be adjusted into the HARQ mode of former cell base station, after adjustment, terminal is upgraded Active Set, terminal can adopt existing soft handover behavior to upgrade Active Set, and then, terminal adopts the HARQ mode of former cell base station respectively to former cell base station and target cell base station transmit uplink signal.
Setting the HARQ mode of former cell base station can adjust, at this moment, the HARQ mode of former cell base station can be adjusted into the HARQ mode of target cell base station, after adjustment, terminal is upgraded Active Set, terminal can adopt existing soft handover behavior to upgrade Active Set, and then, terminal adopts the HARQ mode of target cell base station respectively to former cell base station and target cell base station transmit uplink signal.
Certainly, the present invention also can be adjusted into the third HARQ mode with the HARQ mode of former cell base station and the HARQ mode of target cell base station, is not described in detail at this.
Soft handover method one is applicable to that terminal can know that the HARQ mode of former cell base station and target cell base station and the HARQ mode of former cell base station and target cell base station can be adjusted to consistent situation before carrying out soft handover.
Soft handover method two, begin to adopt the HARQ mode of target cell base station to launch uplink information from predetermined point of time.
Terminal of the present invention is in soft switching process, can be that boundary adopts different HARQ modes to target cell base station, former cell base station emission uplink information with the predetermined point of time, promptly a last moment is at the fixed time adopted the HARQ mode of former cell base station, to former cell base station transmit uplink signal; The next HARQ mode that adopts target cell base station constantly at the fixed time is to the target cell base station transmit uplink signal.
The predetermined point of time here can for: at the latest before finishing activating set updating time of delay and be the time started point of a TTI.
Soft handover method two is applicable to that terminal can know that the HARQ mode of former cell base station and target cell base station and the HARQ mode of former cell base station and target cell base station can not be adjusted to consistent situation before carrying out soft handover.
Method three, in soft switching process, terminal thinks that Target cell does not successfully add in the Active Set, the link of not deleting itself and former sub-district is connected.
Terminal is after upgrading Active Set, the HARQ mode that adopts former cell base station when terminal is after target cell base station continues to launch the uplink information of predetermined time interval, if terminal can not receive the feedback information of target cell base station always, perhaps terminal receives the target cell base station feedack, but, when feedack is incorrect, think that then Target cell does not successfully add in the Active Set, think that promptly the HARQ mode of the HARQ mode of former cell base station and target cell base station is inconsistent, at this moment, the terminal link of not deleting itself and former sub-district is connected; If terminal can receive the feedback information of target cell base station and feedback information when correct, illustrate that the HARQ mode of the HARQ mode of former cell base station and target cell base station is consistent, terminal thinks that Target cell successfully adds in the Active Set.
In method three, terminal can adopt the behavior of existing soft handover to upgrade Active Set, and, terminal is when thinking that Target cell does not successfully add in the Active Set, can not finish information to network side feedback activating set updating, finish information if terminal has been fed back activating set updating to network side, terminal can also be fed back the activating set updating failure information to network side.
When terminal adopted 2ms TTI, the predetermined time interval the longest of above-mentioned lasting emission was 8 TTI, and when terminal adopted 10ms TTI, predetermined time interval is the longest to be 4 TTI.
In method three, terminal also can be launched uplink information to target cell base station, still, is not the uplink information that continues the emission predetermined time interval.
In method three, terminal is after upgrading Active Set according to existing soft handover behavior, if terminal can't know Target cell to the feedback information of the upward signal of its transmission or receive the target cell base station feedback mistake feedback information or can't know the HARQ mode of the Target cell that network side issues in its handoff procedure the time, the link that then keeps itself and former cell base station in soft switching process is connected.At this moment, this method is converted to method four.In method four and method four, terminal can not finished information to network side feedback activating set updating, finishes information if terminal has been fed back activating set updating to network side, and terminal can also be fed back the activating set updating failure information to network side.
Method three and method four are applicable to that mainly terminal can not know the situation of the HARQ mode of former cell base station and target cell base station before carrying out soft handover.
Above-mentioned is description respectively at four kinds of concrete grammars, and above-mentioned four kinds of methods all can be used separately in terminal.Above-mentioned four kinds of methods also can be in terminal applied in any combination.The implementation procedure of applied in any combination as shown in Figure 2.
Among Fig. 2, support the HSUPA business, trigger soft switching process in step 100, terminal.
The HARQ mode of target cell base station and the HARQ mode of former cell base station whether have been known to step 110, terminal judges, if known the HARQ mode of target cell base station and the HARQ mode of former cell base station, to step 120, terminal continues to judge whether the HARQ mode of target cell base station, former cell base station is identical, if it is identical, to step 121, soft handover method of the present invention finishes.
In step 120, if terminal determines that the HARQ mode of target cell base station, former cell base station is inequality, to step 130, terminal continues to judge whether the HARQ mode of target cell base station, former cell base station can be adjusted into unanimity, if can adjust unanimity, to step 140, the HARQ mode of target cell base station, former cell base station is adjusted into unanimity, terminal adopts adjusted HARQ mode simultaneously to former cell base station and target cell base station transmit uplink signal, and soft handover method of the present invention finishes.
In step 130, if the HARQ mode of target cell base station, former cell base station can not be adjusted into unanimity, to step 150, the last moment that terminal is put is at the fixed time adopted the HARQ mode of former cell base station, to former cell base station transmit uplink signal; The next HARQ mode that adopts target cell base station constantly at the fixed time, to the target cell base station transmit uplink signal, soft handover method of the present invention finishes.
If can not know the HARQ mode of target cell base station and the HARQ mode of former cell base station in step 110 terminal, to step 160, terminal adopts the HARQ mode of former cell base station to continue the uplink information of emission predetermined time interval to target cell base station.
To step 170, whether whether terminal judges receives feedback information and this feedback information of target cell base station correct, if terminal can not receive the feedback information of target cell base station always, though perhaps receive the feedback information of target cell base station,, feedack is incorrect, then arrive step 180, terminal thinks that Target cell does not successfully add in the Active Set, and at this moment, the link that terminal is not deleted itself and former sub-district is connected.
In step 170, if it is correct that terminal can receive the feedback information and the feedback information of target cell base station, to step 190, terminal thinks that the HARQ mode of the HARQ mode of former cell base station and target cell base station is consistent, and, Target cell has successfully added in the Active Set, and the link that terminal can be deleted itself and former cell base station is connected, and soft handover method of the present invention finishes.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (10)
1, a kind of soft switching property evaluating method of supporting HSUPA is characterized in that, described method comprises:
A, the tenability of HSUPA business is provided with the soft switching property requirement according to the sub-district;
B, require the soft switching property assessment is carried out in the soft handover behavior of terminal according to described soft switching property.
2, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 1 is characterized in that, described soft switching property requires to comprise: one or more in the link that terminal is supported simultaneously, activating set updating, the data flow performance.
3, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 1 or 2, it is characterized in that described sub-district comprises the tenability of HSUPA business: only support to follow the trail of redundancy merging chaseonly, only support incremental redundancy to merge IR only and support to follow the trail of merging simultaneously and incremental redundancy merging chase+IR.
4, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 2 is characterized in that described step a comprises:
Sub-district in the terminal Active Set to the tenability of HSUPA business not simultaneously, the link that allows terminal to support simultaneously is not an effective link simultaneously.
5, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 2 is characterized in that described step a comprises:
Sub-district in the terminal Active Set allows the link of terminal support can not carry out power control simultaneously to the tenability of HSUPA business not simultaneously.
6, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 2 is characterized in that described step a comprises:
Sub-district in the terminal Active Set to the tenability of HSUPA business not simultaneously, the activating set updating time delay predetermined time interval of the terminal during soft switching property requires.
7, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 6 is characterized in that described predetermined time interval comprises: T * NC, and wherein, T is terminal change HARQ launch time, NC is 0 or 1.
8, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 2 is characterized in that described step a comprises:
Sub-district in the terminal Active Set reduces the data performance requirement of soft switching property in requiring to the tenability of HSUPA business not simultaneously.
9, a kind of soft switching property evaluating method of supporting HSUPA as claimed in claim 2 is characterized in that described step a comprises:
Sub-district in the terminal Active Set allows the flow interruption of terminal emission to the tenability of HSUPA business not simultaneously.
10, a kind of portable terminal is characterized in that, is provided with memory module and soft switching property evaluation module in the described terminal;
Store in the memory module according to the soft switching property requirement of sub-district the tenability setting of HSUPA business;
The soft switching property evaluation module is used for requiring the soft switching property assessment is carried out in the soft handover behavior of terminal according to the soft switching property that memory module is stored.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860924B (en) * | 2009-04-10 | 2012-12-12 | 电信科学技术研究院 | Method and terminal for determining capability levels |
| CN106454971A (en) * | 2016-12-13 | 2017-02-22 | 中国联合网络通信集团有限公司 | Cell switching method and device |
| WO2018059173A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Unlicensed uplink information transmission method, network device, and terminal device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146268C (en) * | 2000-03-02 | 2004-04-14 | 上海大唐移动通信设备有限公司 | Region-cross switching method in cellular mobile communication system |
| US6717927B2 (en) * | 2002-04-05 | 2004-04-06 | Interdigital Technology Corporation | System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change |
| CN1192530C (en) * | 2002-04-08 | 2005-03-09 | 华为技术有限公司 | Method for controlling upline control channel power in soft switching of high speed data packet insertion system |
| JP2004282652A (en) * | 2003-03-19 | 2004-10-07 | Nec Corp | Mobile communication system, base station control apparatus and data transfer method to be used therefor |
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2006
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860924B (en) * | 2009-04-10 | 2012-12-12 | 电信科学技术研究院 | Method and terminal for determining capability levels |
| WO2018059173A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Unlicensed uplink information transmission method, network device, and terminal device |
| CN106454971A (en) * | 2016-12-13 | 2017-02-22 | 中国联合网络通信集团有限公司 | Cell switching method and device |
| CN106454971B (en) * | 2016-12-13 | 2019-08-02 | 中国联合网络通信集团有限公司 | A kind of method and device of cell switching |
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| CN100466782C (en) | 2009-03-04 |
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