CN102946615A - System and method used for improving MIMO (multiple input multiple output) system communication situation - Google Patents
System and method used for improving MIMO (multiple input multiple output) system communication situation Download PDFInfo
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Abstract
The invention provides a system used for improving the MIMO (multiple input multiple output) system communication situation. The terminal side and the base station side of the MIMO system respectively receive and send signals by respectively-arranged transceivers; the base station side simultaneously receives a transmission signal from the terminal side via a plurality of transceivers; the base station side also comprises a first signal comparison unit, wherein the first signal comparison unit is used for detecting the signal received by each transceiver and selecting an optimal terminal signal from the signals; and the optimal terminal signal is used for the upper-layer application of the base station side. Correspondingly, the invention also provides a method used for improving the MIMO system communication situation. According to the technical scheme of the invention, the system communication situation can be improved by aiming at the problem that the up link and the down link of the MIMO system are asymmetric, and the system performance is improved.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of system and a kind of method be used to improving the mimo system communication conditions be used to improving the mimo system communication conditions.
Background technology
MIMO(Multiple Input Multiple Output, multiple-input, multiple-output) technology is widely used in 4G or the wlan system.MIMO utilizes many antennas to send simultaneously or receives many spatial flows, thereby improves power system capacity, and can improve the impact of the many communications of channel fading, reduces the error rate.
In traditional MIMO communication system, as shown in Figure 1, comprise a pair of transceiver, wherein, the transceiver of end side is provided with Nt transmitting antenna, base station side is provided with Nr reception antenna and forms, and uses S bar spatial flow to realize that end side transmits S=min(Nt to the data of base station side, Nr), thereby the quantity of Nt and Nr is more, and the gain of the antenna diversity of acquisition is also just larger, to receive to improve effect also just more obvious.
For traditional mimo system, end side or base station side only have a transceiver to process the signal of multi-path antenna, and the complexity of transceiver doubly increases for how much with the antenna number, and the antenna number is more, and algorithm is more complicated.Therefore, be subject to area and cost that chip is realized, can't do antenna amount too much, therefore the number of the MIMO commercial chip Nt of current maturation or Nr be less than 4.Because antenna amount is limited, limited the gain that antenna diversity obtains, cause between terminal and base station the up-downgoing Radio Link asymmetric, affect the effective coverage range of signal.
Therefore, need a kind of new technical scheme, can solve the unbalanced problem of mimo system uplink downlink, thereby improve the receptivity of system, improve the communication conditions of system.
Summary of the invention
The present invention just is being based on the problems referred to above, has proposed a kind of new technical scheme, can solve the unbalanced problem of mimo system uplink downlink, thereby improves the receptivity of system, improves the communication conditions of system.
In view of this, the present invention proposes a kind of system be used to improving the mimo system communication conditions, the end side of described mimo system and base station side realize signal transmitting and receiving by the transceiver that arranges separately respectively, wherein, many the transceivers of described base station side by arranging, receive simultaneously transmitting from described end side, then described base station side also comprises: the first signal comparing unit, the signal that receives for detection of every transceiver, and therefrom select the optimum terminal signal, use for the upper layer application of described base station side.
In this technical scheme, utilize many group transceiver extended antenna quantity, when obtaining the multi-antenna diversity gain, do not increase the complexity of single transceiver, with low cost, and be not subjected to the quantitative limitation of ripe commercial transceiver chip antenna number, can be according to any extended antenna quantity of system requirements.By many group transceivers are set, thereby utilize the antenna of greater number to increase the alternative of the signal that receives, so as from numerous antenna receptions to signal select Optimal Signals, improve the receptivity of system.
In technique scheme, preferably, described first signal comparing unit comprises: the input subelement, characteristic parameter for the reception signal that obtains every transceiver, wherein, described characteristic parameter comprise following at least one or a combination set of: the specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, the instruction that defines in the communication protocol; Parameter is subelement relatively, is used for comparing according to the characteristic parameter of default judgment rule to the reception signal of every transceiver, therefrom selects described optimum terminal signal.
In this technical scheme, the characteristic parameter by signal that all transceivers are received compares, and obtains optimum terminal signaling, thus the optimum receptivity of the system of assurance.Wherein, the characteristic parameter of signal can be in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding specific characteristic word, verification and, in the instruction that defines in the communication protocol any one, perhaps use simultaneously various features wherein comprehensively to judge, thereby guarantee the accurate judgement to Optimal Signals.
In technique scheme, preferably, described first signal comparing unit comprises: processor or programmable logic device.
In this technical scheme, can use processor selection to go out the optimum terminal signal, also can realize with programmable logic device.
In technique scheme, preferably, described base station side also comprises: the first emission controlling unit is used for controlling described base station side and utilizes transceiver corresponding to described optimum terminal signal to described end side emission signal of communication.
In this technical scheme, for a certain terminal, system can be recorded as its transceiver corresponding to optimum terminal signal of selecting, and this transceiver as optimum transceiver; Because the transmission of signal is mutual, thereby when base station during to the terminal transmitted signal, can select equally the optimum transceiver transmit signal corresponding to this terminal, so that the signal quality at incoming terminal place is optimum.
In technique scheme, preferably, described end side also receives transmitting from described base station side by many transceivers that arrange, then described end side also comprises: the secondary signal comparing unit, the signal that is used for described end side is received compares, to select wherein optimum base station signal for processing; And second emission controlling unit, be used for controlling described end side and utilize transceiver corresponding to described optimum base station signal to described base station side emission signal of communication.
In this technical scheme, can many transceivers be set in end side equally and receive transmitting of base station, and therefrom select Optimal Signals, with the signal quality that guarantees to receive; Simultaneously, transceiver by using corresponding this Optimal Signals is to base station transmit signals, thereby (only transceiver corresponding to Optimal Signals sends on the one hand to guarantee to save the electric quantity consumption of end side, other transceivers do not send), on the other hand can be so that arrive the signal quality optimum of base station side, the communication conditions of improvement system.
In technique scheme, preferably, be positioned on every transceiver of described base station side and described end side and be provided with a plurality of antennas, each antenna is directional antenna or omnidirectional antenna.
In this technical scheme, for the difference of actual conditions or user demand, every antenna that transceiver can take various forms can be directional antenna, also can be omnidirectional antenna or both mixing, thereby make transceiver have best transmitting-receiving performance.
According to another aspect of the invention, a kind of method be used to improving the mimo system communication conditions also is provided, the end side of described mimo system and base station side realize signal transmitting and receiving by the transceiver that arranges separately respectively, then described method comprises: many transceivers of described base station side by arranging receive transmitting from described end side simultaneously; Detect the signal that every transceiver receives, and therefrom select the optimum terminal signal, use for the upper layer application of described base station side.
In this technical scheme, utilize many group transceiver extended antenna quantity, when obtaining the multi-antenna diversity gain, do not increase the complexity of single transceiver, with low cost, and be not subjected to the quantitative limitation of ripe commercial transceiver chip antenna number, can be according to any extended antenna quantity of system requirements.By many group transceivers are set, thereby utilize the antenna of greater number to increase the alternative of the signal that receives, so as from numerous antenna receptions to signal select Optimal Signals, improve the receptivity of system.
In technique scheme, preferably, select the step of described optimum terminal signal to comprise: the characteristic parameter that obtains the reception signal of every transceiver, and compare according to the characteristic parameter of default judgment rule to the reception signal of every transceiver, therefrom select described optimum terminal signal, wherein, described characteristic parameter comprise following at least one or a combination set of: the specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, the instruction that defines in the communication protocol.
In this technical scheme, the characteristic parameter by signal that all transceivers are received compares, and obtains optimum terminal signaling, thus the optimum receptivity of the system of assurance.Wherein, the characteristic parameter of signal can be in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding specific characteristic word, verification and, in the instruction that defines in the communication protocol any one, perhaps use simultaneously various features wherein comprehensively to judge, thereby guarantee the accurate judgement to Optimal Signals.
In technique scheme, preferably, also comprise: described base station side utilizes transceiver corresponding to described optimum terminal signal to described end side emission signal of communication.
In this technical scheme, for a certain terminal, system can be recorded as its transceiver corresponding to optimum terminal signal of selecting, and this transceiver as optimum transceiver; Because the transmission of signal is mutual, thereby when base station during to the terminal transmitted signal, can select equally the optimum transceiver transmit signal corresponding to this terminal, so that the signal quality at incoming terminal place is optimum.
In technique scheme, preferably, also comprise: described end side receives from the transmitting of described base station side by many transceivers that arrange, and compares to the received signal, to select wherein optimum base station signal for processing; And described end side utilizes transceiver corresponding to described optimum base station signal to described base station side emission signal of communication.
In this technical scheme, can many transceivers be set in end side equally and receive transmitting of base station, and therefrom select Optimal Signals, with the signal quality that guarantees to receive; Simultaneously, transceiver by using corresponding this Optimal Signals is to base station transmit signals, thereby (only transceiver corresponding to Optimal Signals sends on the one hand to guarantee to save the electric quantity consumption of end side, other transceivers do not send), on the other hand can be so that arrive the signal quality optimum of base station side, the communication conditions of improvement system.
By above technical scheme, can solve the unbalanced problem of mimo system uplink downlink, thereby improve the receptivity of system, improve the communication conditions of system.
Description of drawings
Fig. 1 shows the structural representation of traditional mimo system;
Fig. 2 shows according to an embodiment of the invention the block diagram of the system that is used for improving the mimo system communication conditions;
Fig. 3 and Fig. 4 show the method flow diagram that is used for improving according to an embodiment of the invention the mimo system communication conditions;
Fig. 5 shows the structural representation of mimo system according to an embodiment of the invention;
Fig. 6 shows the structural representation of mimo system according to another embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments the present invention is further described in detail.Need to prove that in the situation of not conflicting, the application's embodiment and the feature among the embodiment can make up mutually.
Set forth in the following description a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Fig. 2 shows according to an embodiment of the invention the block diagram of the system that is used for improving the mimo system communication conditions.
As shown in Figure 2, the system 200 that is used for improving the mimo system communication conditions of embodiments of the invention, described mimo system is realized radio communication by base station side 202 and one or more end side 204, end side 204 and base station side 202 realize signal transmitting and receiving by the transceiver that arranges separately respectively, wherein, many the transceivers of described base station side 202 by arranging, receive simultaneously transmitting from each described end side 204, then described base station side 202 also comprises: first signal comparing unit 2022, the signal that receives for detection of every transceiver, and therefrom select the optimum terminal signal, use for the upper layer application of described base station side 202.
In this technical scheme, utilize many group transceiver extended antenna quantity, when obtaining the multi-antenna diversity gain, do not increase the complexity of single transceiver, with low cost, and be not subjected to the quantitative limitation of ripe commercial transceiver chip antenna number, can be according to any extended antenna quantity of system requirements.By many group transceivers are set, thereby utilize the antenna of greater number to increase the alternative of the signal that receives, so as from numerous antenna receptions to signal select Optimal Signals, improve the receptivity of system.
In technique scheme, preferably, described first signal comparing unit 2022 comprises: input subelement 2022A, characteristic parameter for the reception signal that obtains every transceiver, wherein, described characteristic parameter comprise following at least one or a combination set of: the specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, the instruction that defines in the communication protocol; Parameter is subelement 2022B relatively, is used for comparing according to the characteristic parameter of default judgment rule to the reception signal of every transceiver, therefrom selects described optimum terminal signal.
In this technical scheme, the characteristic parameter by signal that all transceivers are received compares, and obtains optimum terminal signaling, thus the optimum receptivity of the system of assurance.Wherein, the characteristic parameter of signal can be in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding specific characteristic word, verification and, in the instruction that defines in the communication protocol any one, perhaps use simultaneously various features wherein comprehensively to judge, thereby guarantee the accurate judgement to Optimal Signals.
In technique scheme, preferably, described first signal comparing unit 2022 comprises: processor or programmable logic device.
In this technical scheme, can use processor selection to go out the optimum terminal signal, also can realize with programmable logic device.
In technique scheme, preferably, described base station side 202 also comprises: the first emission controlling unit 2024 is used for controlling described base station side 202 and utilizes transceiver corresponding to described optimum terminal signal to described end side 204 emission signals of communication.
In this technical scheme, for a certain terminal, system can be recorded as its transceiver corresponding to optimum terminal signal of selecting, and this transceiver as optimum transceiver; Because the transmission of signal is mutual, thereby when base station during to the terminal transmitted signal, can select equally the optimum transceiver transmit signal corresponding to this terminal, so that the signal quality at incoming terminal place is optimum.
In technique scheme, preferably, each described end side 204 also receives transmitting from described base station side 202 by many transceivers that arrange, then described end side 204 also comprises: secondary signal comparing unit 2042, the signal that is used for described end side 204 is received compares, to select wherein optimum base station signal for processing; And second emission controlling unit 2044, be used for controlling described end side 204 and utilize transceiver corresponding to described optimum base station signal to described base station side 202 emission signals of communication.
In this technical scheme, can many transceivers be set in end side equally and receive transmitting of base station, and therefrom select Optimal Signals, with the signal quality that guarantees to receive; Simultaneously, transceiver by using corresponding this Optimal Signals is to base station transmit signals, thereby (only transceiver corresponding to Optimal Signals sends on the one hand to guarantee to save the electric quantity consumption of end side, other transceivers do not send), on the other hand can be so that arrive the signal quality optimum of base station side, the communication conditions of improvement system.
In technique scheme, preferably, be positioned on every transceiver of described base station side 202 and described end side 204 and be provided with a plurality of antennas, each antenna is directional antenna or omnidirectional antenna.
In this technical scheme, for the difference of actual conditions or user demand, every antenna that transceiver can take various forms can be directional antenna, also can be omnidirectional antenna or both mixing, thereby make transceiver have best receptivity.
Fig. 3 and Fig. 4 show the method flow diagram that is used for improving according to an embodiment of the invention the mimo system communication conditions.
As shown in Figure 3, a kind of according to an embodiment of the invention method be used to improving the mimo system communication conditions, the end side of described mimo system and base station side realize signal transmitting and receiving by the transceiver that arranges separately respectively, then described method comprises: step 302, many the transceivers of described base station side by arranging receive transmitting from described end side simultaneously; Step 304 detects the signal that every transceiver receives, and therefrom selects the optimum terminal signal, uses for the upper layer application of described base station side.
In this technical scheme, utilize many group transceiver extended antenna quantity, when obtaining the multi-antenna diversity gain, do not increase the complexity of single transceiver, with low cost, and be not subjected to the quantitative limitation of ripe commercial transceiver chip antenna number, can be according to any extended antenna quantity of system requirements.By many group transceivers are set, thereby utilize the antenna of greater number to increase the alternative of the signal that receives, so as from numerous antenna receptions to signal select Optimal Signals, improve the receptivity of system.
In technique scheme, preferably, select the step 302 of described optimum terminal signal to comprise: the characteristic parameter that obtains the reception signal of every transceiver, and compare according to the characteristic parameter of default judgment rule to the reception signal of every transceiver, therefrom select described optimum terminal signal, wherein, described characteristic parameter comprise following at least one or a combination set of: the specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, the instruction that defines in the communication protocol.
In this technical scheme, the characteristic parameter by signal that all transceivers are received compares, and obtains optimum terminal signaling, thus the optimum receptivity of the system of assurance.Wherein, the characteristic parameter of signal can be in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding specific characteristic word, verification and, in the instruction that defines in the communication protocol any one, perhaps use simultaneously various features wherein comprehensively to judge, thereby guarantee the accurate judgement to Optimal Signals.
In technique scheme, preferably, also comprise step 306: described base station side utilizes transceiver corresponding to described optimum terminal signal to described end side emission signal of communication.
In this technical scheme, for a certain terminal, system can be recorded as its transceiver corresponding to optimum terminal signal of selecting, and this transceiver as optimum transceiver; Because the transmission of signal is mutual, thereby when base station during to the terminal transmitted signal, can select equally the optimum transceiver transmit signal corresponding to this terminal, so that the signal quality at incoming terminal place is optimum.
End side also can arrange many transceivers, signal from base station side is received control, its flow process as shown in Figure 4, comprise: step 402, described end side receives transmitting from described base station side by many transceivers that arrange, and compare to the received signal, to select wherein optimum base station signal for processing; Step 404, described end side utilize transceiver corresponding to described optimum base station signal to described base station side emission signal of communication.
In this technical scheme, can many transceivers be set in end side equally and receive transmitting of base station, and therefrom select Optimal Signals, with the signal quality that guarantees to receive; Simultaneously, transceiver by using corresponding this Optimal Signals is to base station transmit signals, thereby (only transceiver corresponding to Optimal Signals sends on the one hand to guarantee to save the electric quantity consumption of end side, other transceivers do not send), on the other hand can be so that arrive the signal quality optimum of base station side, the communication conditions of improvement system.
In technique scheme, preferably, be positioned on every transceiver of described base station side and described end side and be provided with a plurality of antennas, each antenna is directional antenna or omnidirectional antenna.
In this technical scheme, for the difference of actual conditions or user demand, every antenna that transceiver can take various forms can be directional antenna, also can be omnidirectional antenna or both mixing, thereby make transceiver have best transmitting-receiving performance.
Fig. 5 shows the structural representation of mimo system according to an embodiment of the invention.
As shown in Figure 5, in the base station side of mimo system many group transceivers can be set, receive simultaneously the signal of a certain terminal.Each transceiver is provided with many antennas, because the antenna of different transceivers exists the diversity of space, angle or polarization mode, therefore the parameters such as the signal strength signal intensity received of different transceivers, signal to noise ratio are not quite similar.Each transceiver is all delivered to the signal of receiving in the base station side decision device, the characteristic parameter of the signal that the base station side decision device is received according to each road transceiver (comprise specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, any one or its combination in the instruction that defines in the communication protocol etc.) judges that the signal quality which road transceiver receives is optimum, the signal of optimum is delivered in system's upper layer application, and recorded the optimum transceiver that this transceiver is this terminal.
In transmitted signal, for a certain terminal, select optimum transceiver corresponding to this terminal to carry out the signal emission, so that the signal quality at incoming terminal place is optimum.Pass through to select different transceiver transmissions signals with this algorithm, realized selecting different antennae to obtain the purpose of antenna diversity gain, thereby improve the receptivity of system, improved the asymmetric problem of system link, thereby the communication conditions of system is improved.
Fig. 6 shows the structural representation of mimo system according to another embodiment of the invention.
Except in base station side many group transceivers being set such as Fig. 5, as shown in Figure 6, many group transceivers can be set in the end side of mimo system equally, the signal from base station side that then receives for all transceivers of end side, detect the quality of these signals by the end side decision device, and therefrom select the signal of optimal quality, pass to upper layer application and use.Simultaneously, when end side need to be to the base station side transmitted signal, also can utilize the transceiver corresponding to signal of optimal quality to carry out the emission of signal.
Therefore, all arrange in the situation of many group transceivers for end side and base station side, when end side and base station side are utilized respectively after all transceivers finish signal transmitting and receiving, just can determine respectively the optimum transceiver with the other side, thereby end side and base station side can directly use the optimum transceiver of determining separately to realize signal transmitting and receiving, and other transceivers of base station side can be used for the signal transmitting and receiving with other-end, other transceivers of end side then can temporarily not worked, like this, can either guarantee the signal transmitting and receiving quality between end side and base station side, can avoid again a plurality of transceivers is that end side is brought excessive power consumption penalty.
And if end side is portable terminal, change in location along with end side, may cause signal transmitting and receiving to go wrong, then can detect by the quality to the signal that receives at every turn, when the characteristic parameter of this signal does not satisfy preset requirement, then reopen many group transceivers, and therefrom reselect out the transceiver of signal quality optimum.By the way, thus avoid the change in location of end side to cause the decline of signal quality.
More than be described with reference to the accompanying drawings technical scheme of the present invention, considered that the link of mimo system up-downgoing in the correlation technique is asymmetric, affected the effective coverage range of signal.Therefore, the invention provides a kind of system and method that improves the mimo system communication conditions.By technical scheme of the present invention, can improve the communication condition of system for the asymmetric problem of the uplink downlink of mimo system, improve systematic function.
In the present invention, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.Term " a plurality of " refers to two or more, unless clear and definite restriction is arranged in addition.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. system that is used for improving the mimo system communication conditions, it is characterized in that, the end side of described mimo system and base station side realize signal transmitting and receiving by the transceiver that arranges separately respectively, wherein, many the transceivers of described base station side by arranging, receive simultaneously from the transmitting of described end side, then described base station side also comprises:
The first signal comparing unit, the signal that receives for detection of every transceiver, and therefrom select the optimum terminal signal, use for the upper layer application of described base station side.
2. the system be used to improving the mimo system communication conditions according to claim 1 is characterized in that, described first signal comparing unit comprises:
The input subelement, characteristic parameter for the reception signal that obtains every transceiver, wherein, described characteristic parameter comprise following at least one or a combination set of: the specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, the instruction that defines in the communication protocol;
Parameter is subelement relatively, is used for comparing according to the characteristic parameter of default judgment rule to the reception signal of every transceiver, therefrom selects described optimum terminal signal.
3. the system be used to improving the mimo system communication conditions according to claim 1 is characterized in that, described first signal comparing unit comprises: processor or programmable logic device.
4. the system be used to improving the mimo system communication conditions according to claim 1 is characterized in that, described base station side also comprises:
The first emission controlling unit is used for controlling described base station side and utilizes transceiver corresponding to described optimum terminal signal to described end side emission signal of communication.
5. each described system be used to improving the mimo system communication conditions in 4 according to claim 1 is characterized in that, described end side also receives from the transmitting of described base station side by many transceivers that arrange, and then described end side also comprises:
The secondary signal comparing unit, the signal that is used for described end side is received compares, to select wherein optimum base station signal for processing; And
The second emission controlling unit is used for controlling described end side and utilizes transceiver corresponding to described optimum base station signal to described base station side emission signal of communication.
6. each described system be used to improving the mimo system communication conditions in 4 according to claim 1, it is characterized in that, be positioned on every transceiver of described base station side and described end side and be provided with a plurality of antennas, each antenna is directional antenna or omnidirectional antenna.
7. a method that is used for improving the mimo system communication conditions is characterized in that, the end side of described mimo system and base station side realize signal transmitting and receiving by the transceiver that arranges separately respectively, and then described method comprises:
Many the transceivers of described base station side by arranging receive transmitting from described end side simultaneously;
Detect the signal that every transceiver receives, and therefrom select the optimum terminal signal, use for the upper layer application of described base station side.
8. the method for improving the mimo system communication conditions according to claim 7 is characterized in that, selects the step of described optimum terminal signal to comprise:
Obtain the characteristic parameter of the reception signal of every transceiver, and compare according to the characteristic parameter of default judgment rule to the reception signal of every transceiver, therefrom select described optimum terminal signal, wherein, described characteristic parameter comprise following at least one or a combination set of:
Specific characteristic word in signal strength signal intensity, signal to noise ratio, the error rate, the chnnel coding, verification and, the instruction that defines in the communication protocol.
9. the method for improving the mimo system communication conditions according to claim 7 is characterized in that, also comprises:
Described base station side utilizes transceiver corresponding to described optimum terminal signal to described end side emission signal of communication.
10. each described method of improving the mimo system communication conditions in 9 according to claim 7 is characterized in that, also comprises:
Described end side receives from the transmitting of described base station side by many transceivers that arrange, and compares to the received signal, to select wherein optimum base station signal for processing; And
Described end side utilizes transceiver corresponding to described optimum base station signal to described base station side emission signal of communication.
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| CN109150274A (en) * | 2018-09-11 | 2019-01-04 | 联想(北京)有限公司 | A kind of signal emission control method and device |
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