CN101207896B - Method and system for self-adapting for initial link circuit - Google Patents
Method and system for self-adapting for initial link circuit Download PDFInfo
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- CN101207896B CN101207896B CN2006101655699A CN200610165569A CN101207896B CN 101207896 B CN101207896 B CN 101207896B CN 2006101655699 A CN2006101655699 A CN 2006101655699A CN 200610165569 A CN200610165569 A CN 200610165569A CN 101207896 B CN101207896 B CN 101207896B
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- quality indication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses an initial link self-adaptive method and the system thereof used for a wireless mobile communication system comprising a terminal and a base station. The method includes: step 1, the base station acquires the latest downlink channel quality indication information returned recently by the terminal under the special channel state of a sub-district; and step 2, the base station executes initial link self-adaptive control on the terminal under the forward access channel state of the sub-district according to the downlink channel quality indication information. By the invention, the emitting power of the base station is saved, and the quick retransmission times are reduced while ensuring coverage of the sub-district; acquirement of CQI information is realized in a relatively simple mode; in particular the accuracy of the CQI information acquired is comparatively high when converting CELL_DCH state into CELL_FACH state.
Description
Technical field
The present invention relates to the method for self-adapting for initial link circuit in a kind of wireless communication system, particularly relate to a kind of under cell forward access channel status the method and the system thereof of self-adapting for initial link circuit.
Background technology
Link adaptation techniques is when guaranteeing speech quality, the use of maximum Radio Resource, it is by adopting more encoding rate and multiple modulation system, adjust the modulation and the coded system of data adaptively according to the link-quality of terminal to report, with compensation because the influence of fading that caused to received signal of channel variation, thereby improve the signal-to-noise performance of signal.
CQI (Downlink Channel Quality Indicator, the down channel quality indication) indicated at down direction, guarantee under the rational block error rate channel quality information indication of the number that can correctly receive transmission block size, modulation system, parallel sign indicating number of estimation etc.Terminal is measured the current wireless reception environment, estimate the current maximum CQI value that allows, suitable down channel transformat is selected according to the CQI suggestion of terminal in the base station, comprises transmission block size, modulation system, the number of parallel sign indicating number, the capability correction value of reference etc., carries out the link circuit self-adapting adjustment.
Two basic manipulation modes of terminal are idle pulley and connection mode.Connection mode can further be divided into different states: URA_PCH state (Universal Mobile Telecommunication SystemRadio Access Network Register Area Paging Channel, Universal Mobile Telecommunications System wireless access network registration area paging channel state), CELL_PCH state (CELL Paging Channel, the cell paging forward access channel status), CELL_FACH state (CELL Forward Access Channel, cell forward access channel status), CELL_DCH (CELL Dedicated Channel, cell dedicated channel status) state, these states have defined the physical channel of terminal use and the kind of transmission channel.
Under the CELL_DCH state, terminal reports CQI to give the base station by HS-DPCCH channel (High Speed-DedicatedPhysical Control Channel, High-Speed Dedicated Physical Control Channel), and the base station obtains this information and carries out the link circuit self-adapting adjustment.
Under the CELL_FACH state, there is not suitable channel can make terminal can report CQI to give the base station.Especially in stage of self-adapting for initial link circuit, the base station is had no idea to obtain CQI information and is carried out self-adapting for initial link circuit, select suitable down channel transformat, comprise transmission block size, modulation system, the number of parallel sign indicating number, the capability correction value of reference etc., carry out link and initially adapt to adjustment.Had a large amount of simulation results to prove, do not carried out under the situation of self-adapting for initial link circuit, more greatly power will be expended in the base station, and need 3-4 quick re-transmission can guarantee 95% cell coverage.
So, need make the base station obtain the up-to-date CQI information of terminal by some technology at the CELL-FACH state and carry out self-adapting for initial link circuit control.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and system thereof of self-adapting for initial link circuit, is used to solve that self-adapting for initial link circuit is blindly carried out in the base station and the base station transmitting power that causes expends big, the more defective of number of retransmissions fast.
To achieve these goals, the invention provides a kind of method of self-adapting for initial link circuit, be used to comprise the wirelessmobile communication system of terminal, base station, it is characterized in that, this method comprises:
Step 1, described base station are obtained the nearest down channel quality indication information that described terminal the last time is in feedback under the cell dedicated channel status; And
Step 2, described base station is carried out self-adapting for initial link circuit control to described terminal at cell forward access channel status according to described down channel quality indication information.
The method of described self-adapting for initial link circuit, wherein, in the described step 1, described terminal the last time is in cell dedicated channel status, be meant that being in cell forward access channel status with current terminal is datum mark, time is reviewed forward, from the recent state that is in cell dedicated channel status of described datum mark.
The method of described self-adapting for initial link circuit, wherein, in the described step 1, described nearest down channel quality indication information is meant a nearest down channel quality indication information or a plurality of down channel quality indication informations of a period of time recently.
The method of described self-adapting for initial link circuit, wherein, in the described step 1, described down channel quality indication information, be meant that described terminal feeds back in the down channel quality indication information of described base station under cell dedicated channel status, the moment of moving out with cell dedicated channel status is a datum mark, and the time is reviewed forward, from the nearest down channel quality indication information of described datum mark.
The method of described self-adapting for initial link circuit, wherein, in the described step 1, described base station obtains described down channel quality indication information, is meant that described base station is recorded in described down channel quality indication information by described base station to be in charge of in the terminal context of maintenance.
To achieve these goals, the present invention also provides a kind of system of self-adapting for initial link circuit, is used to comprise the wirelessmobile communication system of terminal, base station, it is characterized in that, comprising:
The receiving system of one descending channel quality indication (CQI) information is used for obtaining the nearest down channel quality indication information that described terminal the last time is in feedback under the cell dedicated channel status by described base station; And
One self-adapting for initial link circuit control device is used for according to described down channel quality indication information described terminal being carried out self-adapting for initial link circuit control at cell forward access channel status by described base station.
The system of described self-adapting for initial link circuit, wherein, described terminal the last time is in cell dedicated channel status, is meant that being in cell forward access channel status with current terminal is datum mark, time is reviewed forward, from the recent state that is in cell dedicated channel status of described datum mark.
The system of described self-adapting for initial link circuit, wherein, described nearest down channel quality indication information is meant a nearest down channel quality indication information or a plurality of down channel quality indication informations of a period of time recently.
The system of described self-adapting for initial link circuit, wherein, described down channel quality indication information, be meant that described terminal feeds back in the down channel quality indication information of described base station under cell dedicated channel status, the moment of moving out with cell dedicated channel status is a datum mark, time is reviewed forward, from the nearest down channel quality indication information of described datum mark.
The system of described self-adapting for initial link circuit, wherein, described base station obtains described down channel quality indication information, is meant that described base station is recorded in described down channel quality indication information by described base station to be in charge of in the terminal context of maintenance.
The invention provides a kind of under cell forward access channel status the method for self-adapting for initial link circuit, write down the nearest CQI information that this terminal the last time is in feedback under the CELL_DCH state by the base station, be used for the base station for this reason terminal under the CELL_FACH state, carry out self-adapting for initial link circuit control, thereby have following tangible technique effect:
1), self-adapting for initial link circuit is no longer blindly carried out in the base station, saves base station transmitting power, and is guaranteeing to reduce quick number of retransmissions under the situation that the sub-district covers;
2), CQI information obtain manner is simple relatively;
3), the CQI accuracy of information is higher, when particularly the CELL_FACH state is arrived in CELL_DCH state transition.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is a specific embodiment of the invention schematic diagram;
Fig. 2 is a structural representation of the present invention.
Embodiment
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme of the present invention.
Seeing also shown in Figure 1ly, is specific embodiment of the invention schematic diagram.This embodiment provide a kind of under cell forward access channel status the method for self-adapting for initial link circuit, this method is by being in the nearest CQI information of the feedback CELL_DCH state under by base station 20 these 10 the last times of terminal of record, be used for then base station 20 for this reason terminal 10 under the CELL_FACH state, carry out self-adapting for initial link circuit and control.Described use wireless resource control connection request signaling and carried out self-adapting for initial link circuit, concrete steps comprise:
As shown in Figure 2, be structural representation of the present invention.In conjunction with Fig. 1, this figure provides the composition structure of base station 20, specifically comprises:
The receiving system 100 of down channel quality indication information is used for obtaining the nearest down channel quality indication information that 10 the last times of terminal are in feedback under the cell dedicated channel status by base station 20; And
Self-adapting for initial link circuit control device 200 is used for according to described down channel quality indication information terminal 10 being carried out self-adapting for initial link circuit control at cell forward access channel status by base station 20.
The nearest CQI information of this terminal 10 is noted in base station 20, is meant that 20 these 10 the last times of terminal of record of base station are in the nearest CQI information of feeding back the CELL_DCH state under;
These 10 the last times of terminal are in the CELL_DCH state, are meant that being in the CELL_FACH state with current terminal is datum mark, and the time is reviewed forward, from recent this state that is in the CELL_DCH state of datum mark.
These 10 the last times of terminal are in the nearest CQI information of feedback under the CELL_DCH state, be meant that this terminal 10 feeds back in the CQI information of base station 20 under this CELL_DCH state, this of moving out with the CELL_DCH state is datum mark constantly, time is reviewed forward, from the nearest CQI information of datum mark.
Nearest CQI information can be a nearest CQI information, also can be a plurality of CQI information of nearest a period of time.
The invention provides a kind of under cell forward access channel status the method for self-adapting for initial link circuit, write down the nearest CQI information that this terminal the last time is in feedback under the CELL_DCH state by the base station, be used for the base station for this reason terminal under the CELL_FACH state, carry out self-adapting for initial link circuit control, make the base station no longer blindly carry out self-adapting for initial link circuit, save base station transmitting power, and guaranteeing to reduce quick number of retransmissions under the situation that the sub-district covers.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. the method for a self-adapting for initial link circuit is used to comprise the wirelessmobile communication system of terminal, base station it is characterized in that this method comprises:
Step 1, described base station are obtained the nearest down channel quality indication information that described terminal the last time is in feedback under the cell dedicated channel status; And
Step 2, described base station is carried out self-adapting for initial link circuit control to described terminal at cell forward access channel status according to described down channel quality indication information;
Wherein, in the described step 1, described terminal the last time is in cell dedicated channel status, is meant that being in cell forward access channel status with current terminal is datum mark, time is reviewed forward, from the recent state that is in cell dedicated channel status of described datum mark.
2. the method for self-adapting for initial link circuit according to claim 1, it is characterized in that, in the described step 1, described nearest down channel quality indication information is meant a nearest down channel quality indication information or a plurality of down channel quality indication informations of a period of time recently.
3. the method for self-adapting for initial link circuit according to claim 1 and 2, it is characterized in that, in the described step 1, described down channel quality indication information, be meant that described terminal feeds back in the down channel quality indication information of described base station under cell dedicated channel status, the moment of moving out with cell dedicated channel status is a datum mark, and the time is reviewed forward, from the nearest down channel quality indication information of described datum mark.
4. the method for self-adapting for initial link circuit according to claim 1 and 2, it is characterized in that, in the described step 1, described base station obtains described down channel quality indication information, is meant that described base station is recorded in described down channel quality indication information by described base station to be in charge of in the terminal context of maintenance.
5. the system of a self-adapting for initial link circuit is used to comprise it is characterized in that the wirelessmobile communication system of terminal, base station, comprising:
The receiving system of one descending channel quality indication (CQI) information is used for obtaining the nearest down channel quality indication information that described terminal the last time is in feedback under the cell dedicated channel status by described base station; And
One self-adapting for initial link circuit control device is used for according to described down channel quality indication information described terminal being carried out self-adapting for initial link circuit control at cell forward access channel status by described base station;
Wherein, described terminal the last time is in cell dedicated channel status, is meant that being in cell forward access channel status with current terminal is datum mark, and the time is reviewed forward, from the recent state that is in cell dedicated channel status of described datum mark.
6. the system of self-adapting for initial link circuit according to claim 5, it is characterized in that, described nearest down channel quality indication information is meant a nearest down channel quality indication information or a plurality of down channel quality indication informations of a period of time recently.
7. according to the system of claim 5 or 6 described self-adapting for initial link circuit, it is characterized in that, described down channel quality indication information, be meant that described terminal feeds back in the down channel quality indication information of described base station under cell dedicated channel status, the moment of moving out with cell dedicated channel status is a datum mark, time is reviewed forward, from the nearest down channel quality indication information of described datum mark.
8. according to the system of claim 5 or 6 described self-adapting for initial link circuit, it is characterized in that, described base station obtains described down channel quality indication information, is meant that described base station is recorded in described down channel quality indication information by described base station to be in charge of in the terminal context of maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101655699A CN101207896B (en) | 2006-12-21 | 2006-12-21 | Method and system for self-adapting for initial link circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101655699A CN101207896B (en) | 2006-12-21 | 2006-12-21 | Method and system for self-adapting for initial link circuit |
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| CN101207896A CN101207896A (en) | 2008-06-25 |
| CN101207896B true CN101207896B (en) | 2010-11-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101411342B1 (en) | 2010-01-13 | 2014-06-25 | 알까뗄 루슨트 | Method and equipment for multiple-input multiple-output(mimo) channels information feedback in multiple cells |
| CN103326764B (en) | 2012-03-20 | 2017-03-01 | 华为技术有限公司 | A kind of downlink channel quality information acquisition methods and device |
| CN102958178B (en) * | 2012-11-30 | 2015-08-19 | 大唐移动通信设备有限公司 | A kind of frequency selectivity dispatching method, CQI report method, Apparatus and system |
| WO2021196025A1 (en) * | 2020-03-31 | 2021-10-07 | 北京小米移动软件有限公司 | Data block transport method and apparatus, terminal, base station and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225227A (en) * | 1996-07-05 | 1999-08-04 | 艾利森电话股份有限公司 | Process and device for quality determination in a radio communication system |
| CN1127879C (en) * | 1995-10-02 | 2003-11-12 | 艾利森电话股份有限公司 | System and method for flexible coding modulation, and time slot allocation in a radio telecommunications network |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127879C (en) * | 1995-10-02 | 2003-11-12 | 艾利森电话股份有限公司 | System and method for flexible coding modulation, and time slot allocation in a radio telecommunications network |
| CN1225227A (en) * | 1996-07-05 | 1999-08-04 | 艾利森电话股份有限公司 | Process and device for quality determination in a radio communication system |
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