CN101645730B - Method and equipment for multi-antenna mode switching - Google Patents
Method and equipment for multi-antenna mode switching Download PDFInfo
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Abstract
The invention discloses a method and equipment for multi-antenna mode switching and belongs to the technical field of communication. The method comprises that: a first wireless receiving and transmitting device receives a control command sent by a second wireless receiving and transmitting device; an antenna mode determining mechanism is selected according to a control signaling, wherein the antenna mode determining mechanism comprises that the first wireless receiving and transmitting device determines a first determining mechanism of a required antenna mode and determining a second determining mode of the required antenna mode according to a antenna mode recommended by the second wireless receiving and transmitting device; and the antenna mode required by the first wireless receiving and transmitting device is determined according to the selected determining mechanisms and the determined antenna mode is used to transmit data to the second wireless receiving and transmitting device, so a multi-antenna communication system can flexibly realize self-adaptive switching of a plurality of antenna modes according to actual needs and working environments to obtain high system performance.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method and apparatus that a kind of multi-antenna mode switches.
Background technology
Multi-antenna technology is a kind of common technology in wireless communication system, can be divided three classes by the principle multi-antenna technology, respectively spatial reuse (SM, Spatial Multiplexing), transmit diversity (TD, TransmitDiversity) and wave beam forming (BF, Beam-Forming), wherein, SM is applicable to that signal to noise ratio is higher, spatial coherence is than the circlet border, and the high availability of frequency spectrum can be provided; TD is applicable to the relatively poor environment of channel quality, utilizes diversity technique that identical information is sent at different space links, and the deep fade of antagonism channel can provide high reliability; BF is applicable to the environment of bad channel quality, serious interference, and main beam is aimed at expects users, can improve the signal received signal to noise ratio, improves communication quality, reduces and disturbs.
Existing multiaerial system all can be carried out according to real-time channel condition the self adaptation switching of antenna mode usually, in the hope of mating current channel, obtains the optimum performance compromise of various antenna technologies.In existing FDD (mode of frequency division duplexing) standard multiaerial system, the self adaptation switching of multi-antenna mode is finished at UE (terminal), detailed process is as follows: at first, UE learns current Real-time Channel condition according to channel estimating, utilize existing antenna mode switching criterion to select to be matched with the optimal antenna pattern of current channel, comprise such as the antenna mode switching criterion: the criterions such as heap(ed) capacity, minimum error probability.Then, by upstream control signaling feedback notification Node B (base station).
For LTE (Long Term Evolution, Long Term Evolution) system, substantially all be the self adaptation switching of tending to carry out in terminal multi-antenna mode in present progress, and feed back to the base station by signaling (the order indication of channel).
Yet, in realizing process of the present invention, find that there are the following problems at least in the prior art: prior art all is that the work that antenna mode switches is placed on terminal, such design can reduce the application flexibility of multiaerial system, so that multiaerial system can not be done the self adaptation switching of antenna mode fully according to the actual requirements with environment, and increased the complexity of terminal.Because there is the difference on the ability in the terminal of different manufacturers production, may measure different channel qualities for identical channel condition, thereby the deviation that causes antenna mode to be selected can affect systematic function.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide the method and apparatus that a kind of multi-antenna mode switches, by done the switching of antenna mode by the first wireless transmitter unification, can guarantee the performance of communication system.
In order to achieve the above object, the method that embodiments of the invention provide a kind of multi-antenna mode to switch, described method comprises:
The first wireless transmitter receives the control signal that the second wireless transmitter sends;
Select definite mechanism of antenna mode according to described control signal, definite mechanism of described antenna mode comprises: determine the first the assuring mechanism of required antenna mode by described the first wireless transmitter, and determined the second the assuring mechanism of required antenna mode by the antenna mode that described the first wireless transmitter is recommended according to the second wireless transmitter;
Determine the required antenna mode of described the first wireless transmitter according to the described the assuring mechanism of selecting, and utilize the antenna mode of determining to send data to described the second wireless transmitter.
Preferably, described the first the assuring mechanism is specially: described the first wireless transmitter is determined required antenna mode according to predetermined condition from alternative antenna mode.
Preferably, described antenna mode comprises: single-stream mode and double-stream mode, described the second the assuring mechanism is specially: the Modulation and Coding Scheme MCS number that comprises in the channel quality indicator (CQI) signaling of described the first wireless transmitter according to described the second wireless transmitter feedback, determine the antenna mode that described the second wireless transmitter is recommended;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
Preferably, describedly select the step of definite mechanism of antenna mode specifically to comprise according to described control signal: indicated the first data flow number in the described control signal that will receive, employed the second data flow number compares when sending data with described the first wireless transmitter, if the first data flow number equates with the second data flow number, then selects described the first the assuring mechanism; If the first data flow number and the second data flow number are unequal, then select described the second the assuring mechanism.
Preferably, when selecting described the second the assuring mechanism to determine the required antenna mode of described the first wireless transmitter, the antenna mode that described utilization is determined sends before the step of data to described the second wireless transmitter, described method also comprises: judge whether described the first wireless transmitter needs to carry out the adjustment of antenna mode, if the antenna mode of described the first wireless transmitter is adjusted.
Embodiments of the invention also provide a kind of the first wireless transmitter, comprising:
Receiver module is used for receiving the control signal from the second wireless transmitter;
The mechanism determination module, be used for selecting according to the described control signal that described receiver module receives definite mechanism of antenna mode, definite mechanism of described antenna mode comprises: determine the first the assuring mechanism of required antenna mode by described the first wireless transmitter, and determined the second the assuring mechanism of required antenna mode by the antenna mode that described the first wireless transmitter is recommended according to the second wireless transmitter; And
Data transmission module is used for determining the antenna mode that the first wireless transmitter is required according to the described the assuring mechanism that described machine-processed determination module is selected, and utilizes the antenna mode of determining to send data to described the second wireless transmitter.
Preferably, described the first the assuring mechanism is specially: described the first wireless transmitter is determined required antenna mode according to predetermined condition from alternative antenna mode.
Preferably, described antenna mode comprises: single-stream mode and double-stream mode; Described the second the assuring mechanism is specially: the Modulation and Coding Scheme MCS number that comprises in the channel quality indicator (CQI) signaling of described the first wireless transmitter according to described the second wireless transmitter feedback, determine the antenna mode that described the second wireless transmitter is recommended;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
Preferably, described the first wireless transmitter also comprises: detection module, be used for when selecting the second the assuring mechanism, and whether need carry out the adjustment of antenna mode, if described antenna mode is adjusted if detecting described the first wireless transmitter.
The method that embodiments of the invention also provide a kind of multi-antenna mode to switch, be applied to the second wireless transmitter side, the mode of operation of described the second wireless transmitter comprises: antenna switch mode and non-antenna switch mode, described method comprises: detect the working mode change that whether needs described the second wireless transmitter and arrive described antenna switch mode, if, be described antenna switch mode with the working mode change of described the second wireless transmitter, and carry out the selection of antenna mode;
After having selected described antenna mode, the mode of operation of described the second wireless transmitter is switched to described non-antenna switch mode.
Preferably, behind the complete described antenna mode of described selection, described method also comprises: described the second wireless transmitter is recommended the first wireless transmitter with selected antenna mode, and described the first wireless transmitter is selected required antenna mode according to the antenna mode of recommending.
Preferably, the step that described the second wireless transmitter is recommended the first wireless transmitter with selected antenna mode is specially: the Modulation and Coding Scheme MCS number of described the second wireless transmitter by comprising in the channel quality indicator (CQI) signaling, selected antenna mode is recommended the first wireless transmitter;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
Preferably, whether described detection needs the working mode change of described the second wireless transmitter step to the antenna switch mode is specially: whether satisfy pre-provisioning request by detecting channel quality, if can not, then the working mode change with described the second wireless transmitter arrives described antenna switch mode.
Embodiments of the invention also provide a kind of the second wireless transmitter, and the mode of operation of described the second wireless transmitter comprises: antenna switch mode and non-antenna switch mode comprise:
Detection module, for detection of whether needing the working mode change of described the second wireless transmitter is arrived described antenna switch mode, if be described antenna switch mode with the working mode change of described the second wireless transmitter, and carry out the selection of antenna mode; And
Handover module, selected described antenna mode after, be used for the mode of operation of described the second wireless transmitter is switched to described non-antenna switch mode.
Preferably, described device also comprises: recommending module, be used for recommending the first wireless transmitter according to the antenna mode that predetermined policy is selected described the second wireless transmitter, described the first wireless transmitter is selected the required antenna mode of described the first wireless transmitter according to the antenna mode of recommending.
Preferably, described antenna mode comprises: single-stream mode and double-stream mode;
Described predetermined policy is: the Modulation and Coding Scheme MCS number of described the second wireless transmitter by comprising in the channel quality indicator (CQI) signaling, selected antenna mode is recommended the first wireless transmitter;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
Preferably, described detection module comprises the channel quality detection unit, whether satisfies pre-provisioning request for detection of channel quality, if do not satisfy, then the working mode change with described the second wireless transmitter arrives described antenna switch mode.
A technical scheme in the technique scheme has following beneficial effect: by done the switching of antenna mode by the first wireless transmitter unification, can guarantee the performance of communication system.So that multiple antenna communication can be according to the actual requirements and operational environment, realize neatly the switching of multi-antenna mode, can obtain more excellent systematic function.
Description of drawings
Fig. 1 is the method flow diagram one that multi-antenna mode switches in the embodiments of the invention;
Fig. 2 is the transmission of data flow diagram in the embodiments of the invention;
Fig. 3 is the structured flowchart of the first wireless transmitter in the embodiments of the invention;
Fig. 4 is the method flow diagram two that multi-antenna mode switches in the embodiments of the invention;
Fig. 5 is the structured flowchart of the second wireless transmitter in the embodiments of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, below in conjunction with embodiment and accompanying drawing, the embodiment of the invention is done in further detail explanation.At this, illustrative examples of the present invention and explanation are used for explanation the present invention, but not as a limitation of the invention.
Embodiment one,
The method that embodiments of the invention provide a kind of multi-antenna mode to switch, its core content is, at first the first wireless transmitter receives the control signal that the second wireless transmitter sends, then select definite mechanism of antenna mode according to this control signal, determine the antenna mode that the first wireless transmitter is required according to definite mechanism of selecting at last, and utilize the antenna mode of determining to send data to described the second wireless transmitter.
In the present embodiment, it is to comprise that definite mechanism of this antenna mode can set in advance: the first the assuring mechanism of being determined required antenna mode by the first wireless transmitter, with the second the assuring mechanism of being determined required antenna mode by the first wireless transmitter according to the antenna mode of the second wireless transmitter recommendation, also be not limited to above-mentioned two kinds of mechanism, operating personnel also can arrange according to concrete actual conditions other definite mechanism.
For the ease of understanding, the below is only with TDD HSPA+ (Time Division Duplexing HighSpeed Packet Access Plus, time division duplex high-speed packet access evolution) the first wireless transmitter and the second wireless transmitter in the system is that example is elaborated, same embodiments of the invention also are applicable to other multiaerial systems, and alternative antenna mode includes but not limited to: single-stream mode and double-stream mode.
Below in conjunction with accompanying drawing embodiments of the invention are described in detail.As shown in Figure 1, the method flow diagram one for multi-antenna mode in the embodiments of the invention switches comprises the steps:
In the present embodiment, this first wireless transmitter and the second wireless transmitter can be selected base station or terminal equipment, when the first wireless transmitter is selected the base station, accordingly, the second wireless transmitter is selected terminal equipment, and is same, when the first wireless transmitter is selected terminal equipment, accordingly, the second wireless transmitter is selected the base station.
In the present embodiment, it is to comprise that definite mechanism of this antenna mode can set in advance: determine the first the assuring mechanism of required antenna mode by the first wireless transmitter, and determined the second the assuring mechanism of required antenna mode by the antenna mode that the first wireless transmitter is recommended according to the second wireless transmitter.
Wherein, this first the assuring mechanism is the switching of being responsible for antenna mode by the first wireless transmitter, namely the first wireless transmitter is determined required antenna mode according to predetermined condition from alternative antenna mode, this predetermined condition can be set to utilize uplink channel estimation by the first wireless transmitter, and use existing antenna mode switching criterion, select to obtain the antenna mode of maximum system throughput from alternative antenna mode, wherein the switching criterion of existing antenna mode can be selected such as criterions such as heap(ed) capacity, minimum error probabilities.When the first wireless transmitter is selected the base station, namely be responsible for the switching of antenna mode by base station side, end side can only need receive data to get final product, this moment is because base station side is responsible for the switching of antenna mode, thereby can reduce the complexity of terminal, and so that the ascending control channel simplicity of design is done the switching of antenna mode simultaneously by the base station unification, also can guarantee the performance of communication system.
In this second the assuring mechanism, the second wireless transmitter can select conceal signaling or explicit signaling that selected antenna mode is recommended the first wireless transmitter.In order to reduce the electric energy loss of the second wireless transmitter, preferably recommend antenna mode by conceal signaling, because if come explicit marker antenna pattern with newly-increased signaling, when then in a single day the second wireless transmitter is in non-antenna switch mode, can cause the waste of resource, for example, in TDD HSPA+ system, can utilize the control signal CQI value on the ascending control channel HS-SICH to come implicit expression marker antenna pattern, the CQI value is that the second wireless transmitter is at AMC (Adaptive Modulation and Coding, the current channel quality indication of Adaptive Modulation and Coding) exporting in the module, in TDD HSPA+ system, can adopt two kinds of antenna modes, be single-stream mode and double-stream mode, when the second wireless transmitter is selected single-stream mode, MCS number among the control signal CQI is one, when the second wireless transmitter is selected double-stream mode, MCS number among the control signal CQI is two, and this moment, the first wireless transmitter can be judged the antenna mode that the second wireless transmitter is recommended according to the number of MCS among the control signal CQI on the ascending control channel.The antenna mode that certainly, also can adopt newly-increased signaling to come explicit indication the second wireless transmitter to recommend.
In this step, select the step of definite mechanism of antenna mode specifically can be set to according to this control signal: the first wireless transmitter can be according to the first indicated data flow number in the control signal that receives, employed the second data flow number compares when sending data with the first wireless transmitter, if both (the first data flow number and second data flow numbers) equate, represent that then the second wireless transmitter do not do the selection of antenna mode, and recommend antenna mode to the first wireless transmitter, at this moment optional the first the assuring mechanism; If unequal, represent that then the second wireless transmitter has carried out the selection of antenna mode, and the antenna mode that need to go out to the first wireless transmitter recommendations for selection, this moment optional the second the assuring mechanism.Above-mentioned the second wireless transmitter can be arranged in channel quality not to be satisfied when being scheduled to require, and the second wireless transmitter carries out the selection of antenna mode.
Select the base station with the first wireless transmitter equally, it is that example is elaborated and how selects definite mechanism of antenna mode according to this control signal that the second wireless transmitter is selected terminal, referring to Fig. 2, the base station sends data to terminal first, data flow number in these data is assumed to be one (the second data flow number), then the control signal of base station receiving terminal feedback, data flow number in the control signal of feedback is assumed to be one (the first data flow number), because both (the first data flow number and second data amount checks) equate, can select the first the assuring mechanism this moment, is responsible for the selection of antenna mode by the base station; If the data flow number in the control signal of feedback is two or more (second data flow numbers), this moment both (the first data flow number and second data amount checks) is unequal, can select the second the assuring mechanism, namely required antenna mode can be determined according to the antenna mode that terminal is recommended in the base station.
Namely, when in step 102, having selected the first the assuring mechanism, the take charge of selection of antenna mode of the first wireless transmitter, and use the antenna mode of determining to send data to the second wireless transmitter.And when selecting the second the assuring mechanism, namely the first wireless transmitter carries out the selection of antenna mode according to the antenna mode of the second wireless transmitter recommendation, and utilizes the antenna mode of determining to send data to the second wireless transmitter.
In the present embodiment, the first wireless transmitter is after knowing the optimal antenna pattern that the second wireless transmitter is recommended, also can adjust according to the antenna mode that downlink data to be sent, multi-user's scheduling situation, actual channel condition etc. are recommended the second wireless transmitter, and the final antenna mode of determining to send the required employing of next frame data.Namely, if when selecting the second the assuring mechanism, after execution of step 103, can judge also whether the first wireless transmitter needs to carry out the adjustment of antenna mode, if, antenna mode to this first wireless transmitter is adjusted, and finally determines the antenna mode that uses when sending next Frame.
For example: can decide the first wireless transmitter whether to need to adjust antenna mode according to the up signaling (such as the ACK/NACK signaling) of the second wireless transmitter feedback, when the antenna mode that for example has when the first wireless transmitter comprises single-stream mode and double-stream mode, if the first wireless transmitter uses double-stream mode to send downlink data, but in ACK/NACK (affirmation/non-affirmation) signaling that the second wireless transmitter feeds back several times continuously, what the first wireless transmitter was received all is the NACK signaling, illustrate that the downlink data that sends is repeatedly received mistake, this moment, the first wireless transmitter just can be considered antenna mode is adjusted to single-stream mode by double-stream mode, to improve the quality of downlink data transmission; Equally, if the first wireless transmitter uses single-stream mode to send downlink data, but in the ACK/NACK signaling that the second wireless transmitter feeds back several times continuously, what the first wireless transmitter was received all is the ACK signaling, illustrate that the downlink data that sends is repeatedly received correct, this moment, the first wireless transmitter can be considered antenna mode is adjusted to double-stream mode by single-stream mode, to improve the capacity of downlink data transmission.Certainly, also can be used as adjusting by other method the entry condition of antenna mode.When not needing to adjust the antenna mode of the first wireless transmitter, just illustrate that also presently used antenna mode can satisfy performance requirement, can adopt this kind antenna mode to send data this moment always, until detect the antenna mode that needs to switch the first wireless transmitter.
As shown from the above technical solution, can select according to predefined the assuring mechanism in the present embodiment is by the take charge of selection of antenna mode of the first wireless transmitter, or the first wireless transmitter is selected required antenna mode according to the recommendation antenna mode of the second wireless transmitter; The former, owing to need not the selection that the second wireless transmitter is done antenna mode, therefore initial operation mode that can this second wireless transmitter is set to non-antenna switch mode, thereby can reduce the electric energy loss of the second wireless transmitter, and owing to be the switching that antenna mode is done in the first wireless transmitter unification, therefore can obtain preferably systematic function.Certainly, obtain better data transmit-receive performance in order to make the second wireless transmitter, also can adopt the latter as the assuring mechanism.
In order to realize above-mentioned embodiment of the method, the equipment that other embodiment of the present invention also provide a kind of multi-antenna mode to switch.What need in addition at first explanation is; because following embodiment is for realizing aforesaid embodiment of the method; so this equipment all is to establish for each step that realizes preceding method, but the present invention is not limited to following embodiment, any said method equipment of realizing all should be contained in protection scope of the present invention.And in the following description, the content identical with preceding method omitted at this, to save length.
As shown in Figure 3, the structured flowchart for the first wireless transmitter in the embodiments of the invention comprises:
In the present embodiment, this assuring mechanism includes but not limited to following two kinds of situations:
1) this first the assuring mechanism is specially: the first wireless transmitter is determined required antenna mode according to predetermined condition from alternative antenna mode, and this predetermined condition can be set to: the antenna mode of selecting to obtain maximum system throughput.Wherein this antenna mode comprises: single-stream mode and double-stream mode.
2) the second the assuring mechanism is specially: the first wireless transmitter according to the control signal of the second wireless transmitter feedback (such as the Modulation and Coding Scheme MCS number that comprises in the channel quality indicator (CQI) signaling, if Modulation and Coding Scheme MCS number is one, the antenna mode that the second wireless transmitter is recommended is single-stream mode; If Modulation and Coding Scheme MCS number is two, the antenna mode that the second wireless transmitter is recommended is double-stream mode; ), determine the antenna mode that the second wireless transmitter is recommended;
In another embodiment of the present invention, this first wireless transmitter also comprises:
Detection module is used for detecting the adjustment whether the first wireless transmitter needs to carry out antenna mode, if antenna mode is adjusted when selecting the second the assuring mechanism.
In the present embodiment, can decide the first wireless transmitter whether to need to adjust antenna mode according to the up signaling (such as the ACK/NACK signaling) of the second wireless transmitter feedback, when the antenna mode that for example has when the first wireless transmitter comprises single-stream mode and double-stream mode, if the first wireless transmitter uses double-stream mode to send downlink data, but in ACK/NACK (affirmation/non-affirmation) signaling that the second wireless transmitter feeds back several times continuously, what the first wireless transmitter was received all is the NACK signaling, illustrate that the downlink data that sends is repeatedly received mistake, this moment, the first wireless transmitter just can be considered antenna mode is adjusted to single-stream mode by double-stream mode, to improve the quality of downlink data transmission; Equally, if the first wireless transmitter uses single-stream mode to send downlink data, but in the ACK/NACK signaling that the second wireless transmitter feeds back several times continuously, what the first wireless transmitter was received all is the ACK signaling, illustrate that the downlink data that sends is repeatedly received correct, this moment, the first wireless transmitter can be considered antenna mode is adjusted to double-stream mode by single-stream mode, to improve the capacity of downlink data transmission.Certainly, also can be used as adjusting by other method the entry condition of antenna mode.
Embodiment two,
The method that another embodiment of the present invention provides a kind of multi-antenna mode to switch, be applied to the second wireless transmitter side, the mode of operation of this second wireless transmitter comprises: antenna switch mode and non-antenna switch mode, when the second wireless transmitter is in the antenna switch mode, this moment, the second wireless transmitter can be done the switching of antenna mode, for example can switch to double-stream mode from single-stream mode, and when the second wireless transmitter was in non-antenna switch mode, this moment, this second wireless transmitter can not carry out the selection of antenna mode.The core content of the method is: detect the working mode change whether need the second wireless transmitter to the antenna switch mode, if be the antenna switch mode with the working mode change of this second wireless transmitter, and carry out the selection of antenna mode; After having selected antenna mode, the mode of operation of the second wireless transmitter is switched to non-antenna switch mode.
Although namely the second wireless transmitter end has the ability that antenna mode is selected, but the second wireless transmitter can have two kinds of mode of operations, be non-antenna switch mode and antenna switch mode, the former is that the second wireless transmitter does not carry out the antenna mode selection, the latter is when downlink data that the second wireless transmitter receives can't satisfy performance requirement, carried out the selection of antenna mode by the second wireless transmitter, and selection result can be recommended the first wireless transmitter with up signaling, can be so that the mode of operation of the second wireless transmitter be in non-antenna switch mode for a long time as far as possible, can reduce the workload of the second wireless transmitter this moment, thereby reduce electric energy loss.In the present embodiment, above-mentioned the first wireless transmitter and the second wireless transmitter can be selected base station or terminal equipment, and when the first wireless transmitter was selected the base station, the second corresponding wireless transmitter was selected terminal equipment.
For the ease of understanding, below in conjunction with accompanying drawing embodiments of the invention are described in detail, wherein the antenna mode of this second wireless transmitter includes but not limited to: single-stream mode and double-stream mode.As shown in Figure 4, the method flow diagram two for multi-antenna mode in the embodiments of the invention switches comprises the steps:
The initial operation mode of step 401, this second wireless transmitter is set to non-antenna switch mode;
Whether step 402, detection need the working mode change of this second wireless transmitter is arrived the antenna switch mode, if execution in step 403;
In this step, can whether satisfy predetermined requirement by detecting quality of wireless channel, if can not satisfy, then the working mode change with the second wireless transmitter arrives the antenna switch mode; For example: can judge whether the second wireless transmitter downlink data receiving satisfies pre-provisioning request by the Block Error Rate that detects downlink data receiving, this pre-provisioning request can be set according to actual conditions, but also be not limited to this, if differ larger with predefined Block Error Rate value, then need the mode of operation of the second wireless transmitter is converted to the antenna switch mode by non-antenna switch mode.When the second wireless transmitter is in the antenna switch mode, because the performance of downlink data receiving can not meet the demands, this the second wireless transmitter also needs to carry out the selection of antenna mode, utilizes the antenna mode switching criterion to be chosen in the antenna mode that can obtain maximum system throughput under the current channel condition.
Namely, the second wireless transmitter can carry out the switching of antenna mode, this moment, the second wireless transmitter can utilize down channel to estimate to know current channel condition, and use existing antenna mode switching criterion, from the alternative antenna pattern, select to obtain the pattern of maximum system throughput.Wherein the antenna mode switching criterion can be selected such as criterions such as heap(ed) capacity, minimum error probabilities.
In order to reduce the workload of the second wireless transmitter, can be after having selected antenna mode, the mode of operation of the second wireless transmitter is switched to non-antenna switch mode.
In this step, the second wireless transmitter can adopt explicit signaling and conceal signaling that selected antenna mode is recommended the first wireless transmitter.
When adopting conceal signaling, the first wireless transmitter receives the control signal that the second wireless transmitter sends at ascending control channel, then control signal is decoded and recovers related signaling, such as ACK, CQI etc.Because the antenna mode that CQI while implicit expression has indicated the second wireless transmitter to recommend, therefore when decoding CQI signaling, utilize different coding code check or the different coding mode of CQI under the single, double stream mode, know the antenna mode that the second wireless transmitter is recommended to the first wireless transmitter, know simultaneously the employed MCS of each data flow of this optimal antenna pattern, the final antenna mode of determining to send the required employing of next frame data.
Can adopt in the present embodiment the Modulation and Coding Scheme MCS number of the second wireless transmitter by comprising in the channel quality indicator (CQI) signaling, selected antenna mode is recommended the first wireless transmitter; If described Modulation and Coding Scheme MCS number is one, the antenna mode that the second wireless transmitter is recommended is single-stream mode; If Modulation and Coding Scheme MCS number is two, the antenna mode that the second wireless transmitter is recommended is double-stream mode.
In order to realize above-mentioned embodiment of the method, the equipment that other embodiment of the present invention also provide a kind of multi-antenna mode to switch.What need in addition at first explanation is; because following embodiment is for realizing aforesaid embodiment of the method; so this equipment all is to establish for each step that realizes preceding method, but the present invention is not limited to following embodiment, any said method equipment of realizing all should be contained in protection scope of the present invention.And in the following description, the content identical with preceding method omitted at this, to save length.
As shown in Figure 5, be the structured flowchart of the second wireless transmitter in the embodiments of the invention, the mode of operation of this second wireless transmitter comprises: antenna switch mode and non-antenna switch mode, by among the figure as can be known this device comprise:
Module 51 is set, and the initial operation mode that is used for this second wireless transmitter is set to non-antenna switch mode;
Whether detection module 52 is for detection of needing working mode change with the second wireless transmitter to the antenna switch mode, if be the antenna switch mode with the working mode change of the second wireless transmitter, and carry out the selection of antenna mode; And
Handover module 53, selected antenna mode after, be used for the mode of operation of the second wireless transmitter is switched to described non-antenna switch mode.
In another embodiment of the present invention, device also comprises: recommending module 54, be used for recommending the first wireless transmitter according to the antenna mode that predetermined policy is selected the second wireless transmitter, the first wireless transmitter is selected the required antenna mode of the first wireless transmitter according to the antenna mode of recommending.
Above-mentioned antenna mode comprises: single-stream mode and double-stream mode;
Above-mentioned predetermined policy is: the Modulation and Coding Scheme MCS number of the second wireless transmitter by comprising in the channel quality indicator (CQI) signaling, selected antenna mode is recommended the first wireless transmitter; If Modulation and Coding Scheme MCS number is one, the antenna mode that the second wireless transmitter is recommended is single-stream mode; If Modulation and Coding Scheme MCS number is two, the antenna mode that the second wireless transmitter is recommended is double-stream mode.
In another embodiment of the present invention, device also comprises: described detection module comprises: the channel quality detection unit, whether satisfy pre-provisioning request for detection of channel quality, if can not, then the working mode change with the second wireless transmitter arrives the antenna switch mode.
As shown from the above technical solution, so that multiple antenna communication can be according to the actual requirements and operational environment, the self adaptation that realizes neatly multi-antenna mode is switched, simplify the otherness of the second wireless transmitter implementation complexity and minimizing the second wireless transmitter, thereby can obtain more excellent systematic function.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. the method switched of a multi-antenna mode is characterized in that described method comprises:
The first wireless transmitter receives the control signal that the second wireless transmitter sends;
Select definite mechanism of antenna mode according to described control signal, definite mechanism of described antenna mode comprises: determine the first the assuring mechanism of required antenna mode by described the first wireless transmitter, and determined the second the assuring mechanism of required antenna mode by the antenna mode that described the first wireless transmitter is recommended according to the second wireless transmitter;
Determine the required antenna mode of described the first wireless transmitter according to the described the assuring mechanism of selecting, and utilize the antenna mode of determining to send data to described the second wireless transmitter;
Wherein, select the step of definite mechanism of antenna mode specifically to comprise according to described control signal: indicated the first data flow number in the described control signal that will receive, employed the second data flow number compares when sending data with described the first wireless transmitter, if the first data flow number equates with the second data flow number, then selects described the first the assuring mechanism; If the first data flow number and the second data flow number are unequal, then select described the second the assuring mechanism.
2. method according to claim 1 is characterized in that, described the first the assuring mechanism is specially:
Described the first wireless transmitter is determined required antenna mode according to predetermined condition from alternative antenna mode.
3. method according to claim 1 is characterized in that, described antenna mode comprises: single-stream mode and double-stream mode, and described the second the assuring mechanism is specially:
The Modulation and Coding Scheme MCS number that comprises in the channel quality indicator (CQI) signaling of described the first wireless transmitter according to described the second wireless transmitter feedback is determined the antenna mode that described the second wireless transmitter is recommended;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
4. method according to claim 1, it is characterized in that, when selecting described the second the assuring mechanism to determine the required antenna mode of described the first wireless transmitter, the antenna mode that described utilization is determined sends before the step of data to described the second wireless transmitter, and described method also comprises:
Judge whether described the first wireless transmitter needs to carry out the adjustment of antenna mode, if the antenna mode of described the first wireless transmitter is adjusted.
5. a wireless transmitter is characterized in that, comprising:
Receiver module is used for receiving the control signal from the second wireless transmitter;
The mechanism determination module, be used for selecting according to the described control signal that described receiver module receives definite mechanism of antenna mode, definite mechanism of described antenna mode comprises: determine the first the assuring mechanism of required antenna mode by described the first wireless transmitter, and determined the second the assuring mechanism of required antenna mode by the antenna mode that described the first wireless transmitter is recommended according to the second wireless transmitter; Wherein, select the mode of definite mechanism of antenna mode to be specially according to described control signal: indicated the first data flow number in the described control signal that will receive, employed the second data flow number compares when sending data with described the first wireless transmitter, if the first data flow number equates with the second data flow number, then selects described the first the assuring mechanism; If the first data flow number and the second data flow number are unequal, then select described the second the assuring mechanism; And
Data transmission module is used for determining the antenna mode that the first wireless transmitter is required according to the described the assuring mechanism that described machine-processed determination module is selected, and utilizes the antenna mode of determining to send data to described the second wireless transmitter.
6. method according to claim 5 is characterized in that, described the first the assuring mechanism is specially:
Described the first wireless transmitter is determined required antenna mode according to predetermined condition from alternative antenna mode.
7. method according to claim 5 is characterized in that, described antenna mode comprises: single-stream mode and double-stream mode; Described the second the assuring mechanism is specially:
The Modulation and Coding Scheme MCS number that comprises in the channel quality indicator (CQI) signaling of described the first wireless transmitter according to described the second wireless transmitter feedback is determined the antenna mode that described the second wireless transmitter is recommended;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
8. the first wireless transmitter according to claim 5 is characterized in that, described the first wireless transmitter also comprises:
Detection module is used for when selecting the second the assuring mechanism, and whether need carry out the adjustment of antenna mode, if described antenna mode is adjusted if detecting described the first wireless transmitter.
9. the method that multi-antenna mode switches is applied to the second wireless transmitter side, it is characterized in that the mode of operation of described the second wireless transmitter comprises: antenna switch mode and non-antenna switch mode, and described method comprises:
Detect the working mode change whether need described the second wireless transmitter to described antenna switch mode, if be described antenna switch mode with the working mode change of described the second wireless transmitter, and carry out the selection of antenna mode;
After having selected described antenna mode, the mode of operation of described the second wireless transmitter is switched to described non-antenna switch mode;
Behind the complete described antenna mode of described selection, described method also comprises:
Described the second wireless transmitter is recommended the first wireless transmitter with selected antenna mode, and described the first wireless transmitter is selected required antenna mode according to the antenna mode of recommending.
10. method according to claim 9 is characterized in that, the step that described the second wireless transmitter is recommended the first wireless transmitter with selected antenna mode is specially:
The Modulation and Coding Scheme MCS number of described the second wireless transmitter by comprising in the channel quality indicator (CQI) signaling recommended the first wireless transmitter with selected antenna mode;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
11. method according to claim 9 is characterized in that, whether described detection needs the working mode change of described the second wireless transmitter step to the antenna switch mode is specially:
Whether satisfy pre-provisioning request by detecting channel quality, if can not, then the working mode change with described the second wireless transmitter arrives described antenna switch mode.
12. a wireless transmitter is characterized in that, the mode of operation of described the second wireless transmitter comprises: antenna switch mode and non-antenna switch mode comprise:
Detection module, for detection of whether needing the working mode change of described the second wireless transmitter is arrived described antenna switch mode, if be described antenna switch mode with the working mode change of described the second wireless transmitter, and carry out the selection of antenna mode; And
Handover module, selected described antenna mode after, be used for the mode of operation of described the second wireless transmitter is switched to described non-antenna switch mode;
Described device also comprises:
Recommending module, be used for recommending the first wireless transmitter according to the antenna mode that predetermined policy is selected described the second wireless transmitter, described the first wireless transmitter is selected the required antenna mode of described the first wireless transmitter according to the antenna mode of recommending.
13. device according to claim 12 is characterized in that, described antenna mode comprises: single-stream mode and double-stream mode;
Described predetermined policy is: the Modulation and Coding Scheme MCS number of described the second wireless transmitter by comprising in the channel quality indicator (CQI) signaling, selected antenna mode is recommended the first wireless transmitter;
If described Modulation and Coding Scheme MCS number is one, the antenna mode that described the second wireless transmitter is recommended is described single-stream mode;
If described Modulation and Coding Scheme MCS number is two, the antenna mode that described the second wireless transmitter is recommended is described double-stream mode.
14. device according to claim 12, it is characterized in that described detection module comprises the channel quality detection unit, whether satisfy pre-provisioning request for detection of channel quality, if do not satisfy, then the working mode change with described the second wireless transmitter arrives described antenna switch mode.
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| US10582445B2 (en) * | 2016-03-01 | 2020-03-03 | Huawei Technologies Co., Ltd. | Method for dynamically slicing mobile devices |
| CN109391394B (en) * | 2017-08-09 | 2021-07-27 | 北京紫光展锐通信技术有限公司 | PRG implicit indication method and device, storage medium, terminal and base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1658531A (en) * | 2004-02-16 | 2005-08-24 | 三菱电机株式会社 | Antenna switching device |
| CN1734973A (en) * | 2004-08-12 | 2006-02-15 | 京瓷株式会社 | Telecommunication device and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658531A (en) * | 2004-02-16 | 2005-08-24 | 三菱电机株式会社 | Antenna switching device |
| CN1734973A (en) * | 2004-08-12 | 2006-02-15 | 京瓷株式会社 | Telecommunication device and control method |
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