CN102035584B - Method for determining uplink transmission diversity mode and communication device - Google Patents
Method for determining uplink transmission diversity mode and communication device Download PDFInfo
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- CN102035584B CN102035584B CN200910110716.6A CN200910110716A CN102035584B CN 102035584 B CN102035584 B CN 102035584B CN 200910110716 A CN200910110716 A CN 200910110716A CN 102035584 B CN102035584 B CN 102035584B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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Abstract
The invention relates to the technical field of wireless communication, and discloses a method for determining an uplink transmission diversity mode. The method comprises the following step of: transmitting a high-speed shared control channel (HS-SCCH) command to user equipment (UE) on the HS-SCCH of high-speed special shared channels, wherein the HS-SCCH command comprises command type information, the command type information indicates the uplink transmission diversity mode, and the transmission diversity mode is an open loop transmission diversity mode or a closed loop transmission diversity mode. The invention also discloses a communication device. According to the embodiment provided by the invention, the uplink transmission diversity mode can be determined according to the actual situation so that the system properties such as system capacity, coverage range and the like are maximized in the UE during uplink transmission diversity.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of method and communicator of definite uplink transmission diversity mode.
Background technology
At high-speed packet access (High Speed Packet Access, HSPA) in technology, by uplink antenna transmit diversity techniques, can further utilize the spatial gain of transmit diversity, under the prerequisite that does not change uplink transmission rate, reduce the interference level in community, thereby expand the coverage of up link.
Up link antenna transmit diversity mode comprises Open-Loop Transmit Diversity (Uplink Open LoopTransmission Diversity at present, OLTD) mode and Closed-Loop Transmit Diversity (Uplink Closed LoopTransmission Diversity, CLTD) mode.Open-Loop Transmit Diversity mode comprises open-loop antenna alternate selection send mode and open-loop antenna traversal compute beam forming mode.
Open-Loop Transmit Diversity mode is the mode adopting within the slow fading cycle, can not effectively overcome rapid fading.And Closed-Loop Transmit Diversity mode is the mode of precoding control indication (Pre-coding ControlIndicator, the PCI) feedback based on the rapid fading cycle, do not consider slow fading scene.Two kinds of transmit diversity modes cannot be carried out effective combination, can not determine effective transmit diversity mode according to actual conditions.
Summary of the invention
The embodiment of the present invention provides a kind of method and communicator of definite uplink transmission diversity mode.
The method of a kind of definite uplink transmission diversity mode that the embodiment of the present invention provides, comprise: on the shared control channel HS-SCCH of high-speed dedicated shared channel, send HS-SCCH order to user equipment (UE), described HS-SCCH order comprises command type information; The transmit diversity mode of described command type information indication up link, described transmit diversity mode is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode.
The embodiment of the present invention also provides a kind of communicator, comprise: indicating member, the transmit diversity mode of indicating up link for the command type information comprising in the shared control channel HS-SCCH of high-speed dedicated shared channel order, described transmit diversity mode is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode; Transmitting element, for sending described HS-SCCH order to user equipment (UE) on HS-SCCH.
In the scheme that the embodiment of the present invention provides, the transmit diversity mode of the up link of the command type information indication comprising by HS-SCCH order, can be so that UE makes the systematic functions such as power system capacity, coverage reach maximization when uplink antenna transmit diversity.
Accompanying drawing explanation
The method of a kind of definite uplink transmission diversity mode that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the up double-antenna transmit diversity schematic diagram of UE in the embodiment of the present invention;
Fig. 3 is the up double-antenna transmit diversity schematic diagram of another UE in the embodiment of the present invention;
The structural representation of a kind of communicator that Fig. 4 provides for the embodiment of the present invention.
Embodiment
In order to make concrete technical scheme of the present invention, goal of the invention clearer, below in conjunction with concrete execution mode and accompanying drawing, be described further.
With reference to Fig. 1, the method of a kind of definite uplink transmission diversity mode providing for the embodiment of the present invention, the method comprises: base station is to subscriber equipment (User Equipment, UE) send shared control channel (the Shared Control Channel for HS-DSCH of high-speed dedicated shared channel, HS-SCCH) order (HS-SCCH Order), described HS-SCCH Order comprises command type information (Order type).The transmit diversity mode of Order type indication up link is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode.In embodiments of the present invention, Open-Loop Transmit Diversity mode can be thought the slow fading feedback system of Closed-Loop Transmit Diversity, and Closed-Loop Transmit Diversity mode can be thought the rapid fading feedback system of Closed-Loop Transmit Diversity.
HS-SCCH Order is carried on the code channel of HS-SCCH, can represent the indication signaling of current wireless link in which kind of characteristic, for example, can be used to indicate continuity grouping and connect (Continuous PacketConnectivity, CPC) characteristic, or indication double small district high speed downlink packet access (Dual Cell-HighSpeed Downlink Packet Access, DC-HSDPA) characteristic etc.
The format transmission message of HS-SCCH Order physical channel is as follows:
-command type (Order type) (3 bits): x
odt, 1, x
odt, 2, x
odt, 3
-order (Order) (3bits): x
ord, 1, x
ord, 2, x
ord, 3
-UE identifies (UE identity) (16 bits): x
ue, 1, x
ue, 2..., x
ue, 16
In embodiments of the present invention, can indicate up link by the Order type information in HS-SCCH Order is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode.Base station is in deciding uplink transmit diversity mode, can according to rapid fading or slow fading be that the principal element that affects the systematic functions such as power system capacity or coverage is determined, if rapid fading is major influence factors, can in Order type information, indicate up link is Closed-Loop Transmit Diversity mode, if slow fading is major influence factors, can in Order type information, indicate Open-Loop Transmit Diversity mode.
3 bit x of Order type information
odt, 1, x
odt, 2, x
odt, 3combination can be any one in (0,1,0), (0,1,1), (1,0,0), (1,0,1), (1,1,0) and (1,1,1) these 6 kinds of combinations.For example, 3 bits in Order type are (0,1,0) time, represent that the diversity mode of up link is Open-Loop Transmit Diversity mode, 3 bits in Order type are (0,1,1), time, represent that the diversity mode of up link is Closed-Loop Transmit Diversity mode.In a word, can the arbitrary combination in above-mentioned 6 combinations indicate Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode, specifically can be by default.
UE receives after the HS-SCCH Order of base station transmission, according to the bit information of Order type information bit wherein, can know which kind of transmit diversity mode is up link adopt, like this, the transmit diversity mode of the up link of indicating by Order type, can be so that UE makes the systematic functions such as power system capacity, coverage reach maximization when uplink antenna sends transmit diversity.
In embodiments of the present invention, when 3 bits indication up links of Order type information are Open-Loop Transmit Diversity mode in by HS-SCCH Order, can further by the Order information in HS-SCCH Order, indicate the code book of the weighted factor of Open-Loop Transmit Diversity mode.
The information bit of Order information is also 3 bits, when Order type information indication up link is Open-Loop Transmit Diversity mode, the combination of 3 bits of the information bit of Order information can be indicated the code book of the weighted factor of Open-Loop Transmit Diversity mode, comprises any in 2 code books of open-loop antenna alternate selection send mode and 4 code books of open-loop antenna traversal compute beam forming mode.Base station when selecting concrete code book, can so that the maximized principle of systematic function in conjunction with the actual state of network, determine, for example can determine according to maximum signal to noise ratio.
In embodiments of the present invention, two antennas of UE of take are example, in actual application, and when UE antenna number is greater than two, the method that can adopt the embodiment of the present invention to provide equally.When UE is two antennas, the code book of open-loop antenna alternate selection send mode [w1, w2] can comprise [0,1] and [1,0].The code book [w1, w2] of open-loop antenna traversal compute beam forming mode, has 4 code books according to the difference of w2, and w1 and w2 can define as follows:
Weighted factor code book is in embodiments of the present invention not limited to the above-mentioned concrete code book of enumerating.
Base station can travel through to received signal in PCI code book space, according to optimum signal to noise ratio, determines the weighted factor code book that UE adopted in the next slow fading cycle.
3 bit x of the information bit of Order information
ord, 1, x
ord, 2, x
ord, 3combination can be in (0,0,0), (0,0,1), (0,1,0), (0,1,1), (1,0,0), (1,0,1), (1,1,0) and (1,1,1) these 8 kinds of combinations a kind of.Any in 2 code books of open-loop antenna alternate selection send mode and 4 code books of open-loop antenna traversal compute beam forming mode can be indicated with any one in these 8 kinds of combinations in base station, specifically can be by default.
UE is after receiving the HS-SCCH Order of base station transmission, if obtaining the up link of indication according to the bit information of Order type information bit is wherein Open-Loop Transmit Diversity mode, according to Order information wherein, further obtain again the weighted factor code book [w1 of indicated Open-Loop Transmit Diversity mode, w2], can carry out according to this code book the transmit diversity transmission of uplink antenna.
As shown in Figure 2, be the up double-antenna transmit diversity schematic diagram of UE in the embodiment of the present invention.When UE receives the code book [w1 of Order information indication in the HS-SCCH Order that base station sends, w2], UE is by data channel, for example strengthen dedicated channel (Enhanced-Dedicated Channel, E-DCH) or strengthen Dedicated Physical Data Channel (Enhanced Dedicated Physical Data Control Channel, E-DPDCH) and strengthen Dedicated Physical Control Channel (Enhanced Dedicated Physical ControlChannel, E-DPCCH), through transmission process resume module, and after spread spectrum/scrambling, on antenna 1, multiply each other with w1 respectively, on antenna 2, multiply each other with w2, and then respectively from separately with different Dedicated Physical Control Channel (Dedicated Physical Control Channel, DPCCH) pilot frequency sequence is added and sends by antenna, the different DPCCH pilot frequency sequences that adopt in different antennae, can be different Orthogonal Variable Spreading Factor OVSFs (Orthogonal Variable Spreading Factor, OVSF) code channel, or, can be also same ovsf code road, but be the pilot frequency design through space-time emission diversity coding (Space Time TransmitDiversity, STTD).For example, when the weighted factor code book receiving is [0,1],, on antenna 1, no signal sends, and what the weighted factor code book of also indicating when Order information was now selected is open-loop antenna alternate selection send mode, and selection is antenna 2.If the weighted factor code book receiving is
on antenna 1 by the signal after spread spectrum/scrambling with
multiply each other, be then added with DPCCH1 pilot frequency sequence, on antenna 1, send; On antenna 2 by the signal after spread spectrum/scrambling with
multiply each other, be then added with DPCCH2 pilot frequency sequence, on antenna 2, send.
As shown in Figure 3, be the up double-antenna transmit diversity schematic diagram of another UE in the embodiment of the present invention.In the structure shown in this schematic diagram, DPCCH code channel can be processed through transmission channel processing module together with other data channel code channels, carry out PCI ranking operation, can save a pilot channel power on antenna, remainder is with reference to part shown in Fig. 2.
In the embodiment of the present invention, base station sends HS-SCCH Order to UE on HS-SCCH, Order type information indication up link in this HS-SCCH Order is Open-Loop Transmit Diversity mode, and by the weighted factor of the Order information indication Open-Loop Transmit Diversity mode in HS-SCCH Order, determines the code book of the weighted factor of Open-Loop Transmit Diversity mode.Because Open-Loop Transmit Diversity mode is to utilize the low correlation of antenna slow fading channel, obtain the space diversity gain that slow fading causes, therefore can be so that Closed-Loop Transmit Diversity overcomes slow fading and the shadow fading of up link.
In embodiments of the present invention, when 3 bits indication up links of Order type information are Open-Loop Transmit Diversity mode in by HS-SCCH Order, also can the Order information in HS-SCCH Order indicate in open-loop antenna alternate selection send mode directly selected antenna.For example, 3 of the information bit of Order information bit x
ord, 1, x
ord, 2, x
ord, 3value is that antenna 1 is directly selected in (1,1,1) expression base station, and antenna 2 is directly selected in value (0,0,0) expression base station, and UE is at 3 bit x of the information bit of the Order information receiving
ord, 1, x
ord, 2, x
ord, 3, determine after corresponding value, can directly on antenna 1 or antenna 2, carry out transmit diversity transmission.3 bit x of the information bit of Order information
ord, 1, x
ord, 2, x
ord, 3concrete value, the determining of this value, and the definiteness that goes of determining shows which specific antenna can be set according to actual state by system.
By the Order information in feedback HS-SCCH Order, indicate UE on which antenna, alternately to send transmit diversity, can overcome slow fading and the shadow fading of up link.
In embodiments of the present invention, when 3 bits indication up links of Order type information are Closed-Loop Transmit Diversity mode in by HS-SCCH Order, PCI weights are determined according to maximum signal to noise ratio in base station, and described PCI weights are sent to described UE, can feed back once in each 2 millisecond period to UE.UE carries out closed loop according to these PCI weights and sends transmit diversity.
As shown in Figure 4, the structural representation of the communicator providing for the embodiment of the present invention, this communicator comprises:
Indicating member 410, for the transmit diversity mode of the command type information indication up link that comprises in HS-SCCH order, described transmit diversity mode is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode.
It is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode that indicating member 410 can be indicated up link by the Order type information in HS-SCCH Order.In deciding uplink transmit diversity mode, can according to rapid fading or slow fading be that the principal element that affects the systematic functions such as power system capacity or coverage is determined, if rapid fading is major influence factors, can in Order type information, indicate up link is Closed-Loop Transmit Diversity mode, if slow fading is major influence factors, can in Order type information, indicate Open-Loop Transmit Diversity mode.Indicating member 410 can be indicated 3 bit x of Order type information
odt, 1, x
odt, 2, x
odt, 3combination (0,1,0), (0,1,1), (1,0,0), (1,0,1), (1,1,0) and (1,1,1) in any one represent the mode of the transmit diversity of up link.
Transmitting element 420, for sending described HS-SCCH order to UE on HS-SCCH.
In embodiments of the present invention, which kind of transmit diversity mode is the bit information indication up link of the Order type information bit by indicating member 410 in HS-SCCH Order adopt, and send to UE by transmitting element 420, can be so that UE makes the systematic functions such as power system capacity, coverage reach maximization when uplink antenna sends transmit diversity.
If when described indicating member 410 can also be Open-Loop Transmit Diversity mode for the transmit diversity mode of described command type information indication up link, the command information comprising in described HS-SCCH order is indicated the code book of the weighted factor of described Open-Loop Transmit Diversity mode.Described indicating member 410 is for indicating any code book of the code book of 2 weighted factors of described open-loop antenna alternate selection send mode and the code book of 4 weighted factors of described open-loop antenna traversal compute beam forming mode according to 3 of described command information bits.
3 bit x of the information bit of Order information
ord, 1, x
ord, 2, x
ord, 3combination can be (0,0,0), (0,0,1), (0,1,0), (0,1,1), (1,0,0), (1,0,1), (1,1,0) and (1,1,1) a kind of in these 8 kinds of combinations, indicating member 410 can be with any in 2 code books of any indication open-loop antenna alternate selection send mode in these 8 kinds of combinations and 4 code books of open-loop antenna traversal compute beam forming mode.
If described indicating member 410 is when the transmit diversity mode of described command type information indication up link is Open-Loop Transmit Diversity mode, the antenna that in the command information that indicating member 410 can also comprise in described HS-SCCH order, indication is selected.For example, indicating member 410 can be with 3 bit x of the information bit of Order information
ord, 1, x
ord, 2, x
ord, 3be designated as (1,1,1) expression base station and directly select antenna 1, antenna 2 is directly selected in value (0,0,0) expression base station, and UE is at 3 bit x of the information bit of the Order information receiving
ord, 1, x
ord, 2, x
ord, 3, determine after corresponding value, can directly on antenna 1 or antenna 2, carry out transmit diversity transmission.3 bit x of the information bit of Order information
ord, 1, x
ord, 2, x
ord, 3concrete value, the determining of this value, and the definiteness that goes of determining shows which specific antenna can be by setting according to actual state.
Further, this communicator can also comprise determining unit 430, if the transmit diversity mode for described indicating member indication up link is Closed-Loop Transmit Diversity mode, according to maximum signal to noise ratio, determine PCI weights, transmitting element 320 sends to UE by definite PCI weights.
In the embodiment of the present invention, communicator sends HS-SCCH Order to UE on HS-SCCH, Order type information in this HS-SCCH Order indication up link is Open-Loop Transmit Diversity mode, and determines that by the weighted factor of the Order information indication Open-Loop Transmit Diversity mode in HS-SCCH Order the code book of the weighted factor of Open-Loop Transmit Diversity mode directly indicates the antenna of selection.Because Open-Loop Transmit Diversity mode is to utilize the low correlation of antenna slow fading channel, obtain the space diversity gain that slow fading causes, therefore can be so that Closed-Loop Transmit Diversity overcomes slow fading and the shadow fading of up link.
In addition, the method and apparatus providing by the embodiment of the present invention can make uplink closed loop transmit diversity mode become a kind of up emission diversity scheme of more general and universal significance, the antenna alternate emission scheme that comprises up link Open-Loop Transmit Diversity mode and beam forming scheme.The two schemes when mode of the closed loop feedback by HS-SCCH Order is indicated original Open-Loop Transmit Diversity, while not only making antenna transmit diversity, antenna alternate selection and beam forming can and exist in same transmitting framework, and make Open-Loop Transmit Diversity become a kind of specific embodiments of uplink closed loop transmit diversity.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random AccessMemory, RAM) etc.
Although by with reference to some of the preferred embodiment of the invention, the present invention is illustrated and described, those of ordinary skill in the art should be understood that and can to it, do various changes in the form and details, and do not depart from scope of the present invention.
Claims (8)
1. a method for definite uplink transmission diversity mode, is characterized in that, comprising:
On the shared control channel HS-SCCH of high-speed dedicated shared channel, send HS-SCCH order to user equipment (UE), described HS-SCCH order comprises command type information;
The transmit diversity mode of described command type information indication up link, described transmit diversity mode is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode;
If the transmit diversity mode of described command type information indication up link is Closed-Loop Transmit Diversity mode, according to maximum signal to noise ratio, determines precoding control indication PCI weights, and described PCI weights are sent to described UE.
2. method according to claim 1, is characterized in that, described HS-SCCH order also comprises command information;
If the transmit diversity mode of described command type information indication up link is Open-Loop Transmit Diversity mode, described command information is indicated the code book of the weighted factor of described Open-Loop Transmit Diversity mode.
3. method according to claim 2, is characterized in that, described Open-Loop Transmit Diversity mode comprises open-loop antenna alternate selection send mode and open-loop antenna traversal compute beam forming mode;
The information bit of described command information is 3 bits, indicates any code book in the code book of 2 weighted factors of described open-loop antenna alternate selection send mode and the code book of 4 weighted factors of described open-loop antenna traversal compute beam forming mode according to described 3 bits.
4. method according to claim 1, is characterized in that, if the transmit diversity mode of described command type information indication up link is Open-Loop Transmit Diversity mode, and the antenna that in the command information comprising in described HS-SCCH order, indication is selected.
5. a communicator, is characterized in that, comprising:
Indicating member, the transmit diversity mode of the command type information comprising for the shared control channel HS-SCCH order at high-speed dedicated shared channel indication up link, described transmit diversity mode is Open-Loop Transmit Diversity mode or Closed-Loop Transmit Diversity mode;
Transmitting element, for sending described HS-SCCH order to user equipment (UE) on HS-SCCH;
Determining unit, if be Closed-Loop Transmit Diversity mode for the transmit diversity mode of described indicating member indication up link, determines precoding control indication PCI weights according to maximum signal to noise ratio;
Described transmitting element is also for sending to UE by the definite PCI weights of described determining unit.
6. communicator according to claim 5, it is characterized in that, if when described indicating member also indicates the transmit diversity mode of up link to be Open-Loop Transmit Diversity mode for described command type information, the command information comprising in described HS-SCCH order is indicated the code book of the weighted factor of described Open-Loop Transmit Diversity mode.
7. communicator according to claim 6, is characterized in that, described Open-Loop Transmit Diversity mode comprises open-loop antenna alternate selection send mode and open-loop antenna traversal compute beam forming mode;
Described indicating member is for indicating any code book of the code book of 2 weighted factors of described open-loop antenna alternate selection send mode and the code book of 4 weighted factors of described open-loop antenna traversal compute beam forming mode according to 3 of described command information bits.
8. communicator according to claim 5, it is characterized in that, if described indicating member is also Open-Loop Transmit Diversity mode for the transmit diversity mode of described command type information indication up link, the antenna that in the command information comprising in described HS-SCCH order, indication is selected.
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| CN200910110716.6A CN102035584B (en) | 2009-09-29 | 2009-09-29 | Method for determining uplink transmission diversity mode and communication device |
| PCT/CN2010/076430 WO2011038623A1 (en) | 2009-09-29 | 2010-08-27 | Method, communication device, terminal and communication system for determining the type of uplink transmission diversity |
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| CN102217343A (en) | 2011-04-29 | 2011-10-12 | 华为技术有限公司 | Transmission method, apparatus and system for uplink transmission diversity |
| CN102932045B (en) * | 2011-08-12 | 2015-07-08 | 华为技术有限公司 | Data transmission method and device |
| CN102938689B (en) * | 2011-08-16 | 2017-06-13 | 中兴通讯股份有限公司 | A kind of method and system of control uplink closed loop transmitting diversity |
| CN103051428B (en) * | 2011-10-13 | 2018-08-24 | 中兴通讯股份有限公司 | The only PCI feedback cell determination methods and system of the terminal of configuration dedicated channel |
| CN103051429B (en) * | 2011-10-14 | 2017-12-15 | 中兴通讯股份有限公司 | Up transmission diversity collocation method and device |
| CN103067063B (en) * | 2011-10-20 | 2018-03-02 | 中兴通讯股份有限公司 | A kind of up method and terminal for sending diversity capability reporting |
| CN103067139A (en) * | 2011-10-24 | 2013-04-24 | 中兴通讯股份有限公司 | Collocation method and collocation device of uplink transmit diversity |
| WO2013107421A1 (en) | 2012-01-21 | 2013-07-25 | 华为技术有限公司 | Uplink transmit diversity transmission method, device and system |
| CN103227669B (en) * | 2012-01-30 | 2018-06-12 | 中兴通讯股份有限公司 | uplink data transmission method and device |
| CN103227670B (en) * | 2012-01-30 | 2018-08-24 | 中兴通讯股份有限公司 | Uplink closed loop sends diversity Activiation method and device |
| CN103227691B (en) * | 2012-01-31 | 2018-08-03 | 中兴通讯股份有限公司 | Uplink closed loop sends state of activation update method, system and the RNC of diversity |
| CN103227985B (en) * | 2012-01-31 | 2017-12-15 | 中兴通讯股份有限公司 | A kind of uplink closed loop sends diversity state of activation update method and system |
| CN103379518A (en) * | 2012-04-16 | 2013-10-30 | 中兴通讯股份有限公司 | Configuration optimization method and processing method for sending transmitted precoding indication cell |
| CN103716267B (en) * | 2012-09-29 | 2017-03-15 | 航天恒星科技有限公司 | A kind of broadband signal space diversity synthetic method |
| CN107579764B (en) * | 2016-07-04 | 2022-09-30 | 中兴通讯股份有限公司 | Uplink antenna selection method and device |
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| CN1918840A (en) * | 2004-02-13 | 2007-02-21 | 艾利森电话股份有限公司 | Adaptive feedback of mimo communication system |
| CN1913389A (en) * | 2005-08-09 | 2007-02-14 | 株式会社Ntt都科摩 | Method of controlling mobile communication system, control device, and mobile communication system |
| CN101422067A (en) * | 2006-04-28 | 2009-04-29 | 松下电器产业株式会社 | Radio communication base station device and radio communication method used for multi-carrier communication |
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| Publication number | Publication date |
|---|---|
| CN102035584A (en) | 2011-04-27 |
| WO2011038623A1 (en) | 2011-04-07 |
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