CN102571176A - Method, system and terminal device for adjusting weight-vectors of transmit diversity - Google Patents
Method, system and terminal device for adjusting weight-vectors of transmit diversity Download PDFInfo
- Publication number
- CN102571176A CN102571176A CN2011104554582A CN201110455458A CN102571176A CN 102571176 A CN102571176 A CN 102571176A CN 2011104554582 A CN2011104554582 A CN 2011104554582A CN 201110455458 A CN201110455458 A CN 201110455458A CN 102571176 A CN102571176 A CN 102571176A
- Authority
- CN
- China
- Prior art keywords
- code book
- phase difference
- weight vectors
- adjacent
- tpc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
The invention is applicable to the technical field of communication, and provides a method, a system and a terminal device for adjusting weight-vectors of a transmit diversity. The method comprises the following steps: judging whether a transmit power control (TPC) value periodically and alternately indicates power increasing and power reduction; and if so, adopting a codebook set (the phase difference between adjacent codebooks therein is less than the phase difference between adjacent codebooks in the existing codebook set) to select a new weight-vector. According to the embodiment of the invention, the gain of an open loop transmit diversity can be improved.
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of method of adjustment, system and terminal equipment of transmit diversity weight vectors.
Background technology
Transmit diversity techniques can be resisted channel fading; Reduce presence of intercell interference; Thereby the raising system spectral efficiency is for the performance significance that improves real network, along with subscriber terminal equipment (User Equipment; UE) trending of two-antenna configuration, transmit diversity become the technical scheme of the raising WCDMA network performance that enjoys favor.The kind of transmit diversity techniques is a lot, and the transmit diversity techniques that different communication systems adopts also is not quite similar, and for example, the transmit diversity techniques that the LTE system adopts comprises: Alamouti coding, day line options, Cyclic Delay Diversity, closed loop precoding etc.; And WCDMA system high-speed downlink grouped inserts (High Speed Downlink Packet Access; HSDPA) also adopted the time switching emission to divide collection (Time Switched Transmit Diversity; TSTD), (Space-Time Transmit Diversity STTD) waits transmit diversity techniques to space-time emission diversity.Performance evaluation shows that transmit diversity can improve the sub-district and cover, and brings system gain.
Third generation affiliate organizes (The 3rd Generation Partnership Project; RAN1#59-RAN1#60bis session discussing 3GPP) up Open-Loop Transmit Diversity (open loop transmit diversity, implementation framework OLTD) and with reference to algorithm.Its advantage is to utilize fully existing downlink power control information to carry out the adjustment of transmit diversity weight vectors, does not need down link to increase under the prerequisite of any feedback information, improves the sub-district and covers.The technical report 25.863Va.0.0 of OLTD has been confirmed in the RAN#48 meeting, and this report has provided two kinds of forms of OLTD: antenna switch (Antenna Switch, AS) and beam shaping (Beamforming, BF).
For the Open-Loop Transmit Diversity of wave beam formation form, its basic principle is: baseband signal is placed on two transmit antennas respectively and sends through to the data phase weighting; Make receiver obtain maximum signal to noise ratio through weighting; Thereby the acquisition diversity gain, three kinds that in the technical report 25.863Va.0.0 that 3GPP provides, have provided OLTD beam shaping scheme with reference to algorithm, and wherein most typical a kind of algorithm is following: the every time slot of UE reads Dedicated Physical Control Channel (Dedicated Physical Control Channel; DPCCH) through-put power control (the Transmit Power Control on; TPC) value and storage add up the TPC value read of n time slot of storage, the result who adds up according to the TPC value; In code book set codebook, select new weight vectors, and last time upgrading on the weight vectors change basis.If TPC order suggestion reduces power, then the weight vectors direction is constant; Otherwise direction changes.
According to the technical scheme that prior art provided, find to exist in the prior art following technical problem:
Under slow channel; If current weight vectors is near the optimal weight vector; But because adjusting range is excessive; Probably cause the actual weight vector near the optimal weight vector, to vibrate always, and cause TPC phase property on weekly duty alternately indicate power per liter with power falls, can't arrive the optimal weight vector all the time.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of adjustment of transmit diversity weight vectors, to improve the gain of Open-Loop Transmit Diversity.
The embodiment of the invention is achieved in that a kind of method of adjustment of transmit diversity weight vectors, and said method comprises the steps:
Whether the cycle alternately indicates power per liter and falls power to judge through-put power control TPC value;
If then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
The embodiment of the invention also provides a kind of Adjustment System of transmit diversity weight vectors, and said system comprises:
Judging unit, whether the cycle alternately indicates power per liter and falls power to be used to judge through-put power control TPC value;
Adjustment unit is used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty, then adopts the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
The embodiment of the invention also provides a kind of terminal equipment, and said terminal equipment comprises the Adjustment System of above-mentioned transmit diversity weight vectors.
In the embodiment of the invention; Through when judging that the TPC phase on weekly duty alternately indicates power per liter and falls power, then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors; Even realize under slow channel; Current weight vectors also can find the optimal weight vector fast, and the weight vectors of avoiding being adopted vibrates around the optimal weight vector back and forth, thus the gain that can improve Open-Loop Transmit Diversity.
Description of drawings
Fig. 1 is the flow chart of realization of the method for adjustment of the transmit diversity weight vectors that provides of the embodiment of the invention one;
Fig. 2 is the flow chart of realization of the method for adjustment of the transmit diversity weight vectors that provides of the embodiment of the invention two;
Fig. 3 is the structure chart of the Adjustment System of the transmit diversity weight vectors that provides of the embodiment of the invention three;
Fig. 4 is the structure chart of the Adjustment System of the transmit diversity weight vectors that provides of the embodiment of the invention four.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention; Utilize the different optimal weight vectors of seeking of phase change between code book; When the TPC value is vibrated (being alternately to indicate power per liter the cycle and fall power); Adopt the code book set of less phase change to remove to approach the optimal weight vector, that is, utilize less phase change to remove to approach the optimal weight vector.
The embodiment of the invention provides a kind of method of adjustment of transmit diversity weight vectors, and said method comprises the steps:
Whether the cycle alternately indicates power per liter and falls power to judge through-put power control TPC value;
If then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
The embodiment of the invention also provides a kind of Adjustment System of transmit diversity weight vectors, and said system comprises:
Judging unit, whether the cycle alternately indicates power per liter and falls power to be used to judge through-put power control TPC value;
Adjustment unit is used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty, then adopts the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
The embodiment of the invention also provides a kind of terminal equipment, and said terminal equipment comprises the Adjustment System of above-mentioned transmit diversity weight vectors.
Below in conjunction with specific embodiment realization of the present invention is described in detail:
Embodiment one
The application scenarios of present embodiment is: in the transmit diversity systems that wave beam forms; For the weight vectors that prevents to adopt vibrates, when receiving the information of current weight vectors generation vibration, can utilize the different optimal weight vectors of seeking of phase change between code book near the optimal weight vector; Promptly; Utilize less phase change to remove to approach the optimal weight vector, thereby can find optimal weight vector fast, below the situation of present embodiment is elaborated through embodiment; Fig. 1 shows the flow chart of realization of the method for adjustment of the transmit diversity weight vectors that the embodiment of the invention one provides, and details are as follows:
In step S101, whether the cycle alternately indicates power per liter and falls power to judge the TPC value.
In the present embodiment, if the TPC value is vibrated near the optimal weight vector, then the TPC value can alternately be indicated power per liter the cycle and fallen power.
In step S102, when judging that the TPC phase on weekly duty alternately indicates power per liter and falls power, then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
In the present embodiment, when judging that TPC value does not have generating period alternately to indicate power per liter and falls power, then continues in current code book set, to select new weight vectors, up to finding optimal weight vectorial.
In the present embodiment, adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, specifically can adopt following mode with the step of selecting new weight vectors:
Mode 1: store this set of many group codes in advance, in the set of different code books between adjacent code book phase difference different, in the same code book set between adjacent code book phase difference identical.Then can call the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between the adjacent code book of storing in advance, to select new weight vectors.
In the present embodiment; In order to match best weight vectors faster, comprise and the identical weight vectors of former code book set as if new code book set, then when adopting new code book to gather; The last weight vectors that adopts of former code book set as starting point, is mated best weight vectors; If code book set does not newly comprise and the identical weight vectors of former code book set, can in new code book set, search so and gather the last immediate weight vectors of weight vectors that adopts as initial value with former code book, mate best weight vectors.
In the concrete implementation procedure, after the less code book set of phase difference between the adjacent code book of employing, alternately indicate power per liter and fall power, then continue execution in step S102, until matching the optimal weight vector if judge the TPC value continuation cycle.
For the ease of understanding, below describe, but do not exceed with the situation of this realization example with the implementation procedure of a concrete realization example to aforesaid way 1, for example stored code book set a in advance, phase difference is 90 degree between adjacent code book; Code book set b, phase difference is 60 degree between adjacent code book, and code book set c; Phase difference is 30 degree between adjacent code book, if the current code book set of using is a, in use; The discovery TPC phase on weekly duty alternately indicates power per liter and falls power, and then code book set b is used in adjustment, as if in use; The discovery TPC value continuation cycle alternately indicates power per liter and falls power, then can adjust and use code book set c.
Certainly, in actual implementation process, the set of phase difference is littler between adjacent code book code book can also be stored, finding the optimal weight vector easily and fast, and the precision of searching can be improved.
Mode 2: in the set of current code book, insert new code book, to reduce in the current code book set phase difference between adjacent code book, to select new weight vectors.
For the ease of understanding, below describe, but do not exceed with the situation of this realization example with the implementation procedure of a concrete realization example to aforesaid way 2; For example, among the code book of the current use set a between adjacent code book phase difference be 60 degree, then when finding that the TPC phase on weekly duty alternately indicates power per liter and fall power; Then can between per two code books of current code book set, insert new code book; The size of code book value can be the mean value of adjacent two code books, after this, alternately indicates power per liter and falls power if find the TPC value continuation cycle; Then can continue in the set of current code book, to insert new code book, to reduce in the current code book set phase difference between adjacent code book.
In the present embodiment; Through when judging that the TPC phase on weekly duty alternately indicates power per liter and falls power; Then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors, even realize under slow channel; Current weight vectors also can find the optimal weight vector fast; The weight vectors of avoiding being adopted is vibration back and forth around the optimal weight vector, thereby causes TPC phase property on weekly duty alternately to indicate power per liter and fall power and the gain that can improve Open-Loop Transmit Diversity.
Embodiment two
Fig. 2 shows the flow chart of realization of the method for adjustment of the transmit diversity weight vectors that the embodiment of the invention two provides, and details are as follows:
In step S201, be window with N time slot, with the summation that adds up of the TPC value of N time slot, and obtain corresponding accumulated value, N is a non-zero positive integer.
In step S202, according to the preset window sliding distance, sliding window obtains K accumulated value, and K is a non-zero positive integer, and K >=3.
In the present embodiment, the user can set the preset window sliding distance as required, can for 1 time slot, 2 time slots ... perhaps N time slot, the sliding window more time slot of more number that also can at every turn slide certainly.
In step S203, alternately indicate power per liter and fall power if the absolute value of K accumulated value, is then judged the TPC phase on weekly duty all smaller or equal to A, A is the real number greater than zero.
In the present embodiment, can set the value of A according to the needs of reality, at this not in order to restriction the present invention.
For the ease of understanding, below describe, but do not exceed with the situation of this realization example with the implementation procedure of concrete realization example to above-mentioned steps:
Realization example one: suppose N=2; Be window to the summation that adds up of TPC value then, and sliding window constantly export accumulated value, if the absolute value that is consecutively detected K accumulated value is all smaller or equal to A with 2 time slots; Judge that then the TPC value vibrates; Be alternately to indicate power per liter the TPC phase on weekly duty and fall power, wherein, the process of sliding window can adopt following mode:
If the preset window sliding distance is 1 time slot, then window slides, and the process of obtaining accumulated value is specially: when window is positioned at the 1st time slot and the 2nd time slot, obtain first accumulated value TPC1; When window is positioned at the 2nd time slot and the 3rd time slot, obtain second accumulated value TPC2; When window is positioned at the 3rd time slot and the 4th time slot, obtain the 3rd accumulated value TPC3; ... when window is positioned at K time slot and K+1 time slot, obtain K accumulated value TPCK.
If the preset window sliding distance is 2 time slots, then window slides, and the process of obtaining accumulated value is specially: when window is positioned at the 1st time slot and the 2nd time slot, obtain first accumulated value TPC1; When window is positioned at the 3rd time slot and the 4th time slot, obtain second accumulated value TPC2; When window is positioned at the 5th time slot and the 6th time slot, obtain the 3rd accumulated value TPC3; ... when window is positioned at 2K-1 time slot and 2K time slot, obtain K accumulated value TPCK.
Can find out that the window sliding distance is more little, then same number of time slot, the number of the accumulated value that can obtain is just many more; In actual moving process; Can confirm suitable window sliding distance according to system's needs, thereby reduce system operation time, improve the efficient of system.
Realization example two: supposing N=3, be window to the summation that adds up of TPC value with 3 time slots then, and sliding window is constantly exported accumulated value; If the absolute value that is consecutively detected K accumulated value is all smaller or equal to A; Judge that then the TPC value vibrates, promptly the TPC phase on weekly duty alternately indicates power per liter and falls power, wherein; The process of sliding window can not given unnecessary details at this referring to the specific descriptions of realization example one.
In step S204, when judging that the TPC phase on weekly duty alternately indicates power per liter and falls power, then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
In the present embodiment, the implementation of the step S102 in the execution of step S204 and the foregoing description one is similar, and details are referring to the description of the foregoing description one.
In the present embodiment, through conversion slip time slot window, obtain K accumulated value, judge according to the situation that obtains K accumulated value whether the TPC value vibrates, alternately indicate power per liter and fall power with the cycle, deterministic process accurately and reliably; In the window sliding process, can regulate the window sliding distance that window slides as required simultaneously, thereby reduce system operation time, improve the efficient of system.
Embodiment three
Fig. 3 shows the structure chart of the Adjustment System of the transmit diversity weight vectors that the embodiment of the invention three provides; Details are as follows; For the ease of explanation; Only show the part relevant with the embodiment of the invention, this system can be software unit, hardware cell or the soft or hard combining unit that is built in the terminal equipment.
In the present embodiment, the Adjustment System of transmit diversity weight vectors comprises judging unit 31 and adjustment unit 32:
Judging unit 31, whether the cycle alternately indicates power per liter and falls power to be used to judge through-put power control TPC value.
Optional, said system also comprises memory cell, is used for storing in advance this set of many group codes, in the different code books set between adjacent code book phase difference different, in the same code book set between adjacent code book phase difference identical.Then adjustment unit 32; Specifically be used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty; Call the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between the adjacent code book of storing in advance, to select new weight vectors.
Optional; Adjustment unit 32 specifically is used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty, in current code book set, inserts new code book; To reduce in the set of current code book phase difference between adjacent code book, to select new weight vectors.
Among the method embodiment one that the Adjustment System of the transmit diversity weight vectors that the embodiment of the invention provides can be used in aforementioned correspondence, details repeat no more at this referring to the description of the foregoing description one.
Embodiment four
Fig. 4 shows the structure chart of the Adjustment System of the transmit diversity weight vectors that the embodiment of the invention four provides; Details are as follows; For the ease of explanation; Only show the part relevant with the embodiment of the invention, this system can be software unit, hardware cell or the soft or hard combining unit that is built in the terminal equipment.
In the present embodiment, the Adjustment System of transmit diversity weight vectors comprises judging unit 41 and adjustment unit 42.
Optional in the present embodiment, judging unit 41 comprises: summation module 411 and judge module 412.
Summation module 411, being used for N time slot is window, with the summation that adds up of the TPC value of N time slot, and obtains corresponding accumulated value; And according to the preset window sliding distance, sliding window obtains K accumulated value; Wherein N is a non-zero positive integer, and K is a non-zero positive integer, and K >=3.
In the present embodiment, the preset window sliding distance is 1 time slot or N time slot.
Judge module 412 is used for if the absolute value of K accumulated value, is then judged the TPC phase on weekly duty all smaller or equal to A alternately indicates power per liter and fall power, and A is the real number greater than zero.
Among the method embodiment two that the Adjustment System of the transmit diversity weight vectors that the embodiment of the invention provides can be used in aforementioned correspondence, details repeat no more at this referring to the description of the foregoing description two.
To sum up, the beneficial effect of the embodiment of the invention is:
1, through when judging that the TPC phase on weekly duty alternately indicates power per liter and falls power; Then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book; To select new weight vectors; Even realize under slow channel, current weight vectors also can find the optimal weight vector fast, avoids weight vectors vibration back and forth around the optimal weight vector of being adopted; Thereby cause TPC phase property on weekly duty alternately to indicate power per liter and fall power and the gain that can improve Open-Loop Transmit Diversity.
2, through conversion slip time slot window, obtain K accumulated value, judge according to the situation that obtains K accumulated value whether the TPC value vibrates, alternately to indicate power per liter and fall power with the cycle, deterministic process is accurately and reliably; In the window sliding process, can regulate the window sliding distance that window slides as required simultaneously, thereby reduce system operation time, improve the efficient of system.
It should be noted that in said apparatus and the system embodiment that each included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize function corresponding; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In addition; One of ordinary skill in the art will appreciate that all or part of step that realizes in above-mentioned each embodiment method is to instruct relevant hardware to accomplish through program; Corresponding program can be stored in the computer read/write memory medium; Described storage medium is like ROM/RAM, disk or CD etc.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the method for adjustment of a transmit diversity weight vectors is characterized in that, said method comprises the steps:
Whether the cycle alternately indicates power per liter and falls power to judge through-put power control TPC value;
If then adopt the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
2. the method for claim 1 is characterized in that, whether the cycle alternately indicates power per liter and the step of falling power to be specially to the said TPC of judgement value:
With N time slot is window, with the summation that adds up of the TPC value of N time slot, and obtains corresponding accumulated value, and N is a non-zero positive integer;
According to the preset window sliding distance, the said window that slides obtains K accumulated value, and K is a non-zero positive integer, and K >=3;
Alternately indicate power per liter and fall power if the absolute value of a said K accumulated value, is then judged the TPC phase on weekly duty all smaller or equal to A, A is the real number greater than zero.
3. method as claimed in claim 2 is characterized in that, said preset window sliding distance is 1 time slot or N time slot.
4. the method for claim 1 is characterized in that, stores this set of many group codes in advance, in the set of different code books between adjacent code book phase difference different, in the same code book set between adjacent code book phase difference identical;
Phase difference is specially with the step of selecting new weight vectors less than the code book set of phase difference between adjacent code book in the current code book set between the adjacent code book of said employing:
Call the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between the adjacent code book of storing in advance, to select new weight vectors.
5. the method for claim 1 is characterized in that, phase difference is specially with the step of selecting new weight vectors less than the code book set of phase difference between adjacent code book in the current code book set between the adjacent code book of said employing:
In the set of current code book, insert new code book, to reduce in the current code book set phase difference between adjacent code book, to select new weight vectors.
6. the Adjustment System of a transmit diversity weight vectors is characterized in that, said system comprises:
Judging unit, whether the cycle alternately indicates power per liter and falls power to be used to judge through-put power control TPC value;
Adjustment unit is used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty, then adopts the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between adjacent code book, to select new weight vectors.
7. system as claimed in claim 6 is characterized in that, said judging unit comprises:
Summation module, being used for N time slot is window, with the summation that adds up of the TPC value of N time slot, and obtains corresponding accumulated value; And according to the preset window sliding distance, the said window that slides obtains K accumulated value, wherein; N is a non-zero positive integer, and K is a non-zero positive integer, and K >=3;
Judge module is used for if the absolute value of a said K accumulated value, is then judged the TPC phase on weekly duty all smaller or equal to A alternately indicates power per liter and fall power, and A is the real number greater than zero.
8. system as claimed in claim 7 is characterized in that, said preset window sliding distance is 1 time slot or N time slot.
9. system as claimed in claim 6 is characterized in that, said system also comprises:
Memory cell is used for storing in advance this set of many group codes, in the set of different code books between adjacent code book phase difference different, in the same code book set between adjacent code book phase difference identical;
Said adjustment unit; Specifically be used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty; Call the code book set of phase difference between adjacent code book during phase difference is gathered less than current code book between the adjacent code book of storing in advance, to select new weight vectors.
10. system as claimed in claim 6; It is characterized in that; Said adjustment unit specifically is used for alternately indicating power per liter and falling power when the judgment unit judges through-put power control TPC phase on weekly duty, in current code book set, inserts new code book; To reduce in the set of current code book phase difference between adjacent code book, to select new weight vectors.
11. a terminal equipment is characterized in that, said terminal equipment comprises the Adjustment System of the described transmit diversity weight vectors of the arbitrary claim of claim 6 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455458.2A CN102571176B (en) | 2011-12-30 | 2011-12-30 | Method, system and terminal device for adjusting weight-vectors of transmit diversity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455458.2A CN102571176B (en) | 2011-12-30 | 2011-12-30 | Method, system and terminal device for adjusting weight-vectors of transmit diversity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102571176A true CN102571176A (en) | 2012-07-11 |
| CN102571176B CN102571176B (en) | 2014-07-09 |
Family
ID=46415742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110455458.2A Expired - Fee Related CN102571176B (en) | 2011-12-30 | 2011-12-30 | Method, system and terminal device for adjusting weight-vectors of transmit diversity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102571176B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317891A (en) * | 2000-04-10 | 2001-10-17 | 三星电子株式会社 | Method and appts. for reckoning optimum weighting of mobile communication closed transmitting diversity |
| CN1499757A (en) * | 2002-11-11 | 2004-05-26 | 华为技术有限公司 | Method and device for adjusting weight of downgoing emission under mode of closed loop emission diversity |
| US20040166884A1 (en) * | 2003-02-26 | 2004-08-26 | Hyukjun Oh | Reliability determination and combining of power control commands received in a wireless communication system |
| CN101022297A (en) * | 2006-02-15 | 2007-08-22 | 美国博通公司 | Method and apparatus for processing transmit power control (TPC) commands in a wideband CDMA (WCDMA) network |
| CN101112011A (en) * | 2005-02-01 | 2008-01-23 | 艾利森电话股份有限公司 | Outer loop power control for f-dpch |
-
2011
- 2011-12-30 CN CN201110455458.2A patent/CN102571176B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317891A (en) * | 2000-04-10 | 2001-10-17 | 三星电子株式会社 | Method and appts. for reckoning optimum weighting of mobile communication closed transmitting diversity |
| CN1499757A (en) * | 2002-11-11 | 2004-05-26 | 华为技术有限公司 | Method and device for adjusting weight of downgoing emission under mode of closed loop emission diversity |
| US20040166884A1 (en) * | 2003-02-26 | 2004-08-26 | Hyukjun Oh | Reliability determination and combining of power control commands received in a wireless communication system |
| CN101112011A (en) * | 2005-02-01 | 2008-01-23 | 艾利森电话股份有限公司 | Outer loop power control for f-dpch |
| CN101022297A (en) * | 2006-02-15 | 2007-08-22 | 美国博通公司 | Method and apparatus for processing transmit power control (TPC) commands in a wideband CDMA (WCDMA) network |
Non-Patent Citations (2)
| Title |
|---|
| ERICSSON, ST-ERICSSON: ""Algorithm descriptions for UL Tx diversity for HSPA"", 《3GPP TSG RAN WG1 MEETING #59 R1-094982》 * |
| HUAWEI: ""Link levels simulator results for beamforming transmit diversity"", 《3GPP TSG RAN WG1 MEETING #59BIS R1-100155》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102571176B (en) | 2014-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1190021C (en) | Diversity method of closed ring transmit antenna and base station equipment and movable station equipment | |
| CN102244564B (en) | Downlink transmission method and base station of MIMO (Multiple Input Multiple Output) system | |
| CN101459457B (en) | Wave beam shaping method | |
| CN102035584B (en) | Method for determining uplink transmission diversity mode and communication device | |
| CN102577532A (en) | Base station device, mobile station device, and transmission-power control method | |
| WO2007117949A1 (en) | Efficient training schemes for mimo based wireless networks | |
| JP2004040801A (en) | Adaptive transmission antenna diversity apparatus and method in mobile communication system | |
| CN105637773A (en) | Transmit antenna selection | |
| KR101481391B1 (en) | Channel state information feedback method and system thereof | |
| CN104322025A (en) | Systems and methods to enhance spatial diversity in distributed input distributed output wireless systems | |
| US9319116B2 (en) | Channel state information feedback | |
| JP2010514336A (en) | Method and configuration for mapping symbols in a communication system using OFDM technology | |
| CN103516410A (en) | Method and device for realizing downlink data transmission by utilizing active antenna system | |
| US20140355719A1 (en) | Method and device for phase adjustment based on closed-loop diversity feedback | |
| KR20140085447A (en) | Signature Sequence Selection, System Value Bit Loading and Energy Allocation Method and Apparatus for Multicode Single-input Single-output and Multiple-input Multiple-output Parallel Channels | |
| KR101483666B1 (en) | Efficient cqi signaling in mimo systems with variable numbers of beams | |
| KR20170019932A (en) | Resource Contol Method and Device Using Dielectric lens antenna | |
| CN103095350A (en) | Self-adaption switching transmission mode method in long term evolution (LTE) system | |
| CN102255701B (en) | Selecting and processing method for combinational codebook based on statistical channel status information feedback | |
| CN102571176B (en) | Method, system and terminal device for adjusting weight-vectors of transmit diversity | |
| CN101483467A (en) | Method for MIMO multiple access channel throughput maximization | |
| JP6222761B2 (en) | Wireless communication system | |
| CN102711235B (en) | Synchronous control method of absolute authorization value and channel state parameter and relevant equipment | |
| WO2013009228A1 (en) | Methods of providing channel state information using different pluralities of codewords and related devices and systems | |
| CN100426707C (en) | Method for processing feedback signal in closed-loop transmitting diversity system and its device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20181230 |