WO2018018603A1 - 用户设备ue和信道质量测量方法 - Google Patents

用户设备ue和信道质量测量方法 Download PDF

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Publication number
WO2018018603A1
WO2018018603A1 PCT/CN2016/092255 CN2016092255W WO2018018603A1 WO 2018018603 A1 WO2018018603 A1 WO 2018018603A1 CN 2016092255 W CN2016092255 W CN 2016092255W WO 2018018603 A1 WO2018018603 A1 WO 2018018603A1
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WIPO (PCT)
Prior art keywords
policy
signal
base station
controller
transmit antennas
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PCT/CN2016/092255
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English (en)
French (fr)
Inventor
高全中
胥恒
赵晶
叶智鹏
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16910183.9A priority Critical patent/EP3487090A4/en
Priority to CN201680088055.XA priority patent/CN109565331A/zh
Priority to PCT/CN2016/092255 priority patent/WO2018018603A1/zh
Publication of WO2018018603A1 publication Critical patent/WO2018018603A1/zh
Priority to US16/261,262 priority patent/US20190159217A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • 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
    • 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
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0604—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching with predefined switching scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • 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
    • H04B7/0413—MIMO systems
    • 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
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo

Definitions

  • the embodiments of the present invention relate to the field of multiple antenna technologies, and in particular, to a user equipment UE and a channel quality measurement method.
  • the uplink channel and the downlink channel have reciprocity. Therefore, the user equipment (User Equipment, UE) can transmit a channel sounding reference signal (Sounding Reference Signal, SRS) to the base station.
  • SRS Sounding Reference Signal
  • Multi-antenna technology is a key technology to cope with the growth of wireless data services and has been widely used in UEs.
  • the UE includes at least two transmit antennas
  • an existing channel quality measurement method is: the baseband chip passes each of the transmit antennas in the UE in parallel.
  • the SRS signal is sent to the base station, and the base station calculates the uplink channel quality corresponding to each of the transmitting antennas according to the received SRS signal.
  • the UE Since the UE transmits the SRS signals in parallel through the respective transmit antennas, and the total transmit power of the UE is constant, the transmit power of each of the transmit antennas in the above method is low.
  • the embodiment of the present invention provides a user equipment UE and a channel quality measurement method.
  • the technical solution is as follows:
  • a UE in a first aspect, includes: a baseband chip, at least two transmit antennas, and a controller electrically connected to the at least two transmit antennas;
  • the controller is configured to obtain a signal sending policy, where the signal sending policy is a pre-agreed policy of the UE and the base station, and the signal sending policy includes sending the channel sounding reference signal SRS to the base station by using the n transmitting antennas of the at least two transmitting antennas according to a preset sequence.
  • n is an integer greater than or equal to 1;
  • the controller is further configured to sequentially select n launch days from at least two transmit antennas in a preset order line;
  • the baseband chip is configured to sequentially send the SRS signal to the base station by using the n transmit antennas selected by the controller, and the base station performs channel quality measurement according to the received SRS signals.
  • the controller By setting a controller electrically connected to at least two transmitting antennas in the UE, the controller sequentially selects n transmitting antennas from at least two transmitting antennas, thereby enabling the baseband chip to select n transmitting antennas through the controller.
  • Each of the transmitting antennas sequentially transmits the SRS signal to the base station; and solves the problem in the prior art that the transmitting power of each transmitting antenna is low because the multiple transmitting antennas in the UE transmit the SRS signals in parallel; In the uplink symbol, only one transmitting antenna transmits the SRS signal, thereby improving the transmission power of each transmitting antenna.
  • the controller can acquire the signaling policy by the following four possible acquisition methods. specific:
  • the controller is further configured to obtain a local preset signaling policy.
  • the controller is further configured to receive the index information sent by the base station, and query the signal sending policy corresponding to the index information according to the preset correspondence relationship, where the preset correspondence relationship is pre-agreed by the UE and the base station. Correspondence relationship.
  • the resources required for the interaction between the base station and the UE are reduced.
  • the controller is also used to:
  • the strategy of sorting and repeating the number of repetitions corresponding to each of the transmit antennas is determined as a signal transmission strategy; the order of n transmit antennas is pre-agreed by the UE and the base station. Sort of.
  • the controller is electrically connected to the baseband chip; the controller is further configured to:
  • a policy of transmitting an SRS signal according to the ordering is determined as the signaling policy.
  • a second aspect provides a channel quality measurement method, where the method is used in the UE according to the first aspect, the method includes:
  • the controller acquires a signal sending policy, where the signal sending policy is a pre-agreed policy of the UE and the base station, and the signal sending policy includes sending the channel sounding reference signal SRS to the base station through n of the at least two transmitting antennas in a preset order, where n is An integer greater than or equal to 1;
  • the controller sequentially selects n transmit antennas from at least two transmit antennas in a preset order
  • the baseband chip sequentially transmits the SRS signal to the base station through the n transmit antennas selected by the controller, and the base station performs channel quality measurement according to the received SRS signals.
  • the controller By setting a controller electrically connected to at least two transmitting antennas in the UE, the controller sequentially selects n transmitting antennas from at least two transmitting antennas, thereby enabling the baseband chip to select n transmitting antennas through the controller.
  • Each of the transmitting antennas sequentially transmits the SRS signal to the base station; and solves the problem in the prior art that the transmitting power of each transmitting antenna is low because the multiple transmitting antennas in the UE transmit the SRS signals in parallel; In the uplink symbol, only one transmitting antenna transmits the SRS signal, thereby improving the transmission power of each transmitting antenna.
  • the manner in which the controller acquires the signaling policy may include the following four possible implementation manners. specific:
  • the controller acquires a local preset signaling policy.
  • the index information sent by the base station is received
  • the controller obtains a local preset signaling policy, including:
  • the signal transmission policy corresponding to the index information is queried, and the preset correspondence relationship is a pre-agreed correspondence between the UE and the base station.
  • the number of repetitions of each of the n transmit antennas sent by the base station is received;
  • the strategy of sorting and repeating the number of repetitions corresponding to each of the transmit antennas is determined as a signal transmission strategy; the order of n transmit antennas is pre-agreed by the UE and the base station. Sort of.
  • the output signal of the baseband chip is obtained, and the output signal is a binary sequence
  • a policy of transmitting an SRS signal according to the ordering is determined as the signaling policy.
  • a channel quality measuring apparatus comprising: an obtaining unit, a selecting unit, and a transmitting unit. among them:
  • An acquiring unit configured to acquire a signal sending policy, where the signal sending policy is a policy pre-agreed by the UE and the base station, where the signal sending policy includes: adopting n transmitting antennas of the at least two transmitting antennas according to a preset sequence Transmitting a channel sounding reference signal SRS to the base station, where n is an integer greater than or equal to 1;
  • a selecting unit configured to sequentially select the n transmitting antennas from the at least two transmitting antennas according to the preset sequence
  • a sending unit configured to sequentially send the SRS signal to the base station by using the selected n transmit antennas, where the base station performs channel quality measurement according to each received SRS signal.
  • Obtaining a signal transmission strategy selecting n transmit antennas from at least two transmit antennas according to the signal transmission strategy, so that each of the selected n transmit antennas can sequentially send the SRS signal to the base station;
  • the transmit power of each transmit antenna is low; and the SRS signal is transmitted through only one transmit antenna in the same uplink symbol, thereby improving each The effect of the transmit power of the root transmit antenna.
  • the obtaining unit, the selecting unit, and the sending unit are further used to implement the channel quality measurement method in the optional implementation manner in the foregoing second aspect, and details are not described herein.
  • FIG. 1A and FIG. 1B are schematic diagrams showing the structure of a UE according to an embodiment of the present invention.
  • FIG. 1C is a performance simulation diagram of a UE according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a channel quality measurement method according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a channel quality measuring apparatus according to an embodiment of the present invention.
  • FIG. 1A is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • the UE includes: a baseband chip 110 and at least two transmit antennas 120 (FIG. 1A has a transmit antenna 120) 4 is for example) and a controller 130 electrically connected to at least two transmitting antennas 120.
  • the controller 130 is configured to acquire a signal transmission policy, where the signal transmission policy is a policy pre-agreed by the UE and the base station, and the signal transmission policy includes sending the SRS signal to the base station by using the n transmit antennas of the at least two transmit antennas 120 in a preset sequence. n is an integer greater than or equal to 1.
  • the controller 130 can be implemented as a counter, which is not limited in this embodiment.
  • the controller 130 is further configured to sequentially select n transmit antennas from at least two transmit antennas 120 in a preset order.
  • the baseband chip 110 is configured to sequentially transmit the SRS signal to the base station by using the n transmit antennas selected by the controller 130, and the base station performs channel quality measurement according to the received SRS signals.
  • the baseband chip 110 may transmit the SRS signal to the base station through the currently selected transmit antenna of the controller 130 on different uplink symbols.
  • the signal transmission strategy is to send the SRS signal to the base station in the order of ant0, ant2, and ant3.
  • the baseband chip 110 sends the SRS signal to the base station through ant0; when the controller 130 selects ant2, The baseband chip 110 transmits the SRS signal to the base station through ant2; when the controller 130 selects ant3, the baseband chip 110 transmits the SRS signal to the base station through ant3.
  • the UE may further include an antenna selection switch 140 connected to the baseband chip 110, the transmitting antenna 120, and the controller 130, respectively.
  • the controller 130 controls the antenna selection switch 140 to be turned on with the selected one of the at least two transmit antennas 120. For example, when the controller 130 needs to select ant0, the controller 130 controls the antenna selection switch 140 to be turned on with ant0.
  • the baseband chip 110 transmits the SRS signal
  • the SRS signal can be transmitted to the base station through the turned on ant0.
  • the base station After receiving the SRS signal sent by the baseband chip 110 through the transmitting antenna at different times, the base station can calculate the uplink signal quality information corresponding to the transmitting antenna according to the received SRS signal.
  • the UE provided in this embodiment sets a controller that is electrically connected to at least two transmitting antennas in the UE, and selects n transmitting days from the at least two transmitting antennas through the controller.
  • a line which in turn enables the baseband chip to sequentially transmit the SRS signal to the base station through each of the n transmit antennas selected by the controller; and solves the problem in the prior art that multiple S transmit signals are transmitted in parallel in the UE, so each The problem that the transmit power of the root transmit antenna is low; the SRS signal is transmitted through only one transmit antenna in the same uplink symbol, and the transmit power of each transmit antenna is improved.
  • the manner in which the controller 130 obtains the signaling policy may include the following:
  • the controller 130 is further configured to acquire a local preset signaling policy.
  • the UE may store a signal transmission policy that is pre-agreed with the base station, and the controller 130 in the UE may directly obtain a locally stored signal transmission policy.
  • the UE may store the signaling policy shown in Table 1.
  • the controller 130 may obtain the signaling policy shown in Table 1.
  • Table 1 shows only one of the cycles, and multiple cycles can be repeated in actual implementation.
  • the signal transmission strategy includes only four transmit antennas in the UE.
  • the signal transmission strategy may include only part of the transmit antennas.
  • Table 2 shows another possible signaling strategy.
  • the UE may pre-agreed a plurality of signaling policies with the base station, and when the channel quality measurement is required, the base station sends one of the signaling policies for the UE.
  • the UE and the base station may store a preset correspondence, where the preset correspondence includes a correspondence between the index information and the signaling policy.
  • the base station sends the index information corresponding to the signal transmission policy sent to the UE to the UE, and the controller 130 in the UE receives the index information, and according to the stored preset correspondence, the query index information corresponds to Signaling strategy.
  • the preset correspondence between the UE and the base station is as shown in Table 3.
  • the controller 130 may obtain the current correspondence according to the preset correspondence.
  • the signaling strategy used is Strategy 3.
  • the third type is the third type.
  • the UE may store the order of the transmit antennas pre-agreed with the base station.
  • the base station may send the number of repetitions of each transmit antenna.
  • the UE may receive the repetition number of each transmitting antenna sent by the base station, and after receiving the repetition number, the controller 130 in the UE will repeat according to a predetermined order and repeat the corresponding antenna of each transmitting antenna.
  • the number of times the policy is determined to be a signaling policy.
  • the number of repetitions of the configuration of the base station for different transmit antennas may be the same or different, which is not limited in this embodiment.
  • the number of repetitions configured by the base station for each of the transmitting antennas is the same, and the order of the transmitting antennas pre-agreed by the UE and the base station is the sequence shown in Table 1.
  • the controller 130 acquires The signal transmission strategy is shown in Table 4.
  • the base station may directly send the repetition number of each transmitting antenna to the UE. For example, the base station sends 2, 1, 3, and 1 to the UE.
  • the controller 130 may learn that the ant0 is repeated. Two times, ant2 is repeated once, ant1 is repeated three times, and ant3 is repeated once, that is, the controller 130 can obtain the signal transmission strategy shown in Table 5.
  • the base station and the UE may further pre-assign the correspondence between the index and the repetitive configuration, and the base station sends an index to the UE, where the controller 130 in the UE queries the repetitive configuration corresponding to the index according to the stored correspondence relationship. Thereafter, the controller 130 can obtain a signaling policy.
  • the UE can obtain the signal transmission policy shown in Table 7.
  • the repeat configuration 1 in Table 6 is ant0:1, ant2:2, ant1:1, and ant3:3; repeat configuration 2 is ant0:2, ant2:1, ant1:3, and ant3 : 2 times; repeat configuration 3 for ant0:1, ant2:3, ant1:2, and ant3:1; repeat configuration 4 for ant0:3, ant2:1, ant1:2, and ant3:1 Times.
  • the controller 130 can be electrically connected to the baseband chip 110.
  • the controller 130 can obtain a signaling policy by using the following manner.
  • the output signal of the baseband chip 110 is obtained, and the output signal is a binary sequence.
  • the controller 130 can acquire an output signal of the baseband chip 110 from the connected baseband chip 110.
  • the output signal obtained by the controller 130 is: 00000 00000 00001 00001 00000 00000 00001 00001 00000 00000 00001 00001.
  • the high and low levels in the output signal are converted to obtain the m-1 way signal, where m is the smallest integer greater than or equal to log 2 n.
  • the controller 130 may convert the high and low levels in the output signal at the sounding period to obtain the m-1 channel signal.
  • the m-bit binary number of the m-channel signal formed by the converted m-1 channel signal and the output signal at the sounding period can identify each of the n transmit antennas.
  • the controller 130 can convert the low level of the T1+(4*N+1)*t time in the output signal to a high level, and the high power of the T1+(4*N+4)*t time. The level is converted to a low level and the level at other times remains unchanged.
  • T1 is the time of the first high level in the output signal
  • t T/2
  • T is the time difference between two high levels in the output signal
  • the starting value of N is 0.
  • a signal converted by the controller 130 is: 00000 00001 00000 00000 00001 00000 00001 00000 00001 00000 00001 00000 00000 00001.
  • the controller 130 can convert the low level of T1+(8*N+1)*t and T1+(8*N+5)*t in the output signal to a high level, and T1+( 8*N+4)*t and T1+(8*N+8)* The high level at time t is converted to a low level, and the high and low levels at other times remain unchanged, and the signal obtained after the conversion is used as the second path.
  • controller 130 can convert the high level of T1+(8*N+2)*t and T1+(8*N+4)*t times to a low level, and T1+(8*N+5)*t And the low level of T1+(8*N+7)*t is converted to a high level, and the high and low levels at other times in the output signal are kept unchanged, and the converted signal is used as the third signal.
  • T1 is the time of the first high level in the output signal
  • t T/2
  • T is the time difference between two high levels in the output signal
  • the starting value of N is 0.
  • the second signal converted by the controller 130 is: 00000 00000 00001 00001 00000 00000 00001 00001 00000 00000
  • the converted third signal is: 00000 00001 00000 00000 00001 00000 00000 00001 00000 00001.
  • the controller 130 can output T1+(8*N+1)*t in the output signal.
  • the low level of T1+(8*N+5)*t is converted to a high level, and the high level of T1+(8*N+4)*t and T1+(8*N+8)*t is converted to Low level, the high and low levels at other times remain unchanged, and the signal obtained after the conversion is used as the second path signal;
  • the controller 130 can set T1+(8*N+1)*t and T1+(8*N+3)
  • the high level of *t is converted to a low level
  • the low level of T1+(8*N+6)*t and T1+(8*N+8)*t is converted to a high level, and the output signal is output.
  • the high and low levels at other times remain unchanged, and the signal obtained after the conversion is used as the third signal.
  • the order of the m-bit binary numbers in the m-path signal at the detection period is determined as the order of the transmit antennas corresponding to the binary numbers.
  • the two signals obtained by the controller 130 are:
  • each of the signals may also include other contents mentioned above, which is not limited in this embodiment.
  • the order of the transmitting antennas is ant0, ant0, ant1 and ant2.
  • the policy of transmitting the SRS signals according to the order is determined as a signaling policy.
  • the controller determines the policy for transmitting the SRS signal according to the above-mentioned determined order as the signal transmission policy, that is, the determined signal transmission policy is in the order of ant0, ant0, ant1, and ant2, which is not limited in this embodiment.
  • the first point of the additional description is that the foregoing embodiment is only used by the controller 130 to obtain a signal transmission policy by using the foregoing several acquisition methods.
  • the base station may directly send a signal transmission policy to the UE, and correspondingly, the UE
  • the controller 130 is configured to obtain a signal transmission policy sent by the base station, which is not limited in this embodiment.
  • the second point that needs to be supplemented is that after the base station calculates the uplink channel quality according to the received SRS signal, the channel quality information corresponding to the transmitting antenna can be calculated according to the SRS signal transmitted through each transmitting antenna. That is, the base station can obtain channel quality information corresponding to n transmit antennas. Thereafter, the base station can calculate a beamforming (BF) weight or a precoding weight of the UE according to the n channel quality information.
  • BF beamforming
  • the base station may calculate the BF weight or the precoding weight according to the n channel quality information, that is, the full-dimensional channel quality information;
  • the base station may first estimate channel quality information corresponding to the remaining transmit antennas according to the n channel quality information, and then according to the n channel quality information and the estimated mn.
  • the channel quality information is used to calculate a BF weight or a precoding weight. Since the base station can obtain the n-dimensional channel quality information, n can be an integer greater than 1. Therefore, the accuracy of the BF weight or the pre-coding weight calculated by the base station according to the n-dimensional channel quality information is high, and the performance of the UE is improved.
  • FIG. 1C shows that the controller does not include the controller (AS0), includes the controller, and has two transmit antennas (AS1 (2TX)), including four controller transmit antennas and three insertion insertion loss ( AS1 (4TX 3dBLoss)), including performance simulation diagrams when the controller's transmit antenna has four and no insertion loss (AS(4TX)).
  • AS1 2TX
  • AS1 4TX 3dBLoss
  • AS(4TX) performance simulation diagrams when the controller's transmit antenna has four and no insertion loss
  • FIG. 1C for the 4 transmit antennas without insertion loss, there is a gain of 20% in the scheme disclosed in the embodiment; and for the 4 transmit insertion loss of 3 dB, the scheme disclosed in this embodiment still has 17 % gain.
  • the UE may also include other parts, for example, a plurality of receiving antennas and a processor may be included, and the specific structure of the UE is not limited in this embodiment.
  • the fourth point that needs to be supplemented is that the above embodiment is only used to obtain a signal transmission policy by the controller.
  • the processor may also acquire the signal by using the foregoing acquisition manner.
  • the controller 130 obtains the signal sending policy directly from the processor.
  • the method for obtaining the signal sending policy is not limited in this embodiment.
  • the UE provided in this embodiment sets a controller that is electrically connected to at least two transmitting antennas in the UE, and sequentially selects n transmitting antennas from at least two transmitting antennas through the controller, thereby enabling
  • the baseband chip can sequentially send the SRS signal to the base station by using each of the n transmit antennas selected by the controller.
  • the prior art is that the multiple transmit antennas in the UE send the SRS signals in parallel, so each transmit antenna The problem of low transmission power is achieved; the SRS signal is transmitted through only one transmitting antenna in the same uplink symbol, and the transmission power of each transmitting antenna is improved.
  • FIG. 2 is a flowchart of a method for measuring a channel quality according to an embodiment of the present invention.
  • the channel quality measurement method may be used in the UE shown in FIG. 1A, FIG. 1B or FIG. 1C. As shown in FIG. 2, the channel quality measurement method may include:
  • Step 201 The controller acquires a signal sending policy, where the signal sending policy is a pre-agreed policy between the UE and the base station, and the signal sending policy includes sending the channel sounding reference signal SRS to the base station through n transmitting antennas of the at least two transmitting antennas according to a preset sequence.
  • n is an integer greater than or equal to 1.
  • Step 202 The controller sequentially selects n transmit antennas from at least two transmit antennas in a preset order.
  • Step 203 The baseband chip sequentially sends the SRS signal to the base station by using the n transmit antennas selected by the controller, and the base station performs channel quality measurement according to the received SRS signals.
  • the channel quality measurement method provided by the embodiment obtains a signal transmission strategy by using a controller, and sequentially selects n transmit antennas from at least two transmit antennas according to the signal transmission strategy, so that the baseband chip can pass the controller.
  • Each of the selected n transmit antennas sequentially transmits an SRS signal to the base station.
  • the prior art solves the problem that the transmit power of each transmit antenna is low because multiple transmit antennas in the UE transmit SRS signals in parallel. The effect of transmitting the SRS signal through only one transmitting antenna in the same uplink symbol to improve the transmission power of each transmitting antenna is achieved.
  • the manner in which the controller obtains the signal sending policy may include the following four types:
  • the controller obtains a local preset signaling policy.
  • the signal transmission policy corresponding to the index information is queried, and the preset correspondence relationship is a pre-agreed correspondence between the UE and the base station.
  • the third type is the third type.
  • the strategy of sorting and repeating the number of repetitions corresponding to each of the transmit antennas is determined as a signal transmission strategy; the order of n transmit antennas is pre-agreed by the UE and the base station. Sort of.
  • a policy of transmitting SRS signals in order is determined as a signaling policy.
  • FIG. 3 is a schematic structural diagram of a channel quality measuring apparatus according to an embodiment of the present invention.
  • the channel quality measuring apparatus may include: an obtaining unit 310, a selecting unit 320, and a sending unit 330.
  • the acquiring unit 310 is configured to acquire a signal sending policy, where the signal sending policy is a policy pre-agreed by the UE and the base station, where the signal sending policy includes transmitting, by using n of the at least two transmitting antennas in a preset order.
  • the antenna transmits a channel sounding reference signal SRS to the base station, where n is an integer greater than or equal to 1;
  • the selecting unit 320 is configured to sequentially select the n transmit antennas from the at least two transmit antennas according to the preset sequence;
  • the sending unit 330 is configured to sequentially send the SRS signal to the base station by using the selected n transmit antennas, and the base station performs channel quality measurement according to each received SRS signal.
  • the channel quality measurement apparatus selects n transmit antennas from at least two transmit antennas according to the signal transmission strategy according to the signal transmission strategy, thereby enabling selection of n transmit antennas.
  • Each of the transmitting antennas sequentially transmits the SRS signal to the base station; and solves the problem in the prior art that the transmitting power of each transmitting antenna is low because the multiple transmitting antennas in the UE transmit the SRS signals in parallel; In the uplink symbol, only one transmitting antenna transmits the SRS signal, thereby improving the transmission power of each transmitting antenna.
  • the acquiring unit 310 is further configured to: acquire, by the controller, the locally preset signaling policy.
  • the acquiring unit 310 is further configured to receive the index information sent by the base station, and query the signal sending policy corresponding to the index information according to a preset correspondence, where the preset correspondence relationship is Determining a correspondence between the UE and the base station in advance.
  • the acquiring unit 310 is further configured to receive a repetition quantity of each of the n transmit antennas sent by the base station;
  • the order of the n transmit antennas is a pre-arranged order of the UE and the base station.
  • the acquiring unit 310 is further configured to acquire an output signal of the baseband chip, where The output signal is a binary sequence;
  • a policy of transmitting an SRS signal according to the ordering is determined as the signaling policy.
  • the channel quality measurement apparatus provided in this embodiment may be applied to the UE shown in FIG. 1A or FIG. 1B, and the channel quality measurement method described above is implemented by a controller and a baseband chip in the UE.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明实施例提供了一种用户设备UE和信道质量测量方法，涉及多天线技术领域，该UE包括：基带芯片、至少两根发射天线以及与至少两根发射天线电性相连的控制器；其中，控制器，用于获取信号发送策略，信号发送策略为UE与基站预先约定的策略，信号发送策略包括按照预设顺序通过至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至基站；控制器，还用于按照预设顺序从至少两根发射天线中依次选择n根发射天线；基带芯片，用于通过控制器选择的n根发射天线依次发送SRS信号至基站，基站根据接收到的各个SRS信号进行信道质量测量。解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题。

Description

用户设备UE和信道质量测量方法 技术领域
本发明实施例涉及多天线技术领域，特别涉及一种用户设备UE和信道质量测量方法。
背景技术
在时分双工(Time Division Duplexing，TDD)***中，上行信道和下行信道之间具有互易性，因此用户设备(User Equipment，UE)可以通过向基站发送信道探测参考信号(Sounding Reference Signal，SRS)的方式来使得基站进行准确的上行信道质量的测量，进而得到准确的下行信道质量。
多天线技术是应对无线数据业务增长的关键技术，已经广泛应用于UE中。现有技术中，当UE中包含至少两根发射天线时，为了测量每根发射天线所对应的信道质量，现有的一种信道质量测量方法为：基带芯片通过UE中的每根发射天线并行发送SRS信号至基站，基站根据接收到的SRS信号计算每根发射天线所对应的上行信道质量。
在实现本发明的过程中，发明人发现上述方法至少包括如下问题：
由于UE通过各根发射天线并行发送SRS信号，且UE的总发射功率一定，因此，上述方法中每根发射天线的发射功率较低。
发明内容
为了解决现有技术中每根发射天线的发射效率较低的问题，本发明实施例提供了一种用户设备UE和信道质量测量方法。所述技术方案如下：
第一方面，提供了一种UE，所述UE包括：基带芯片、至少两根发射天线以及与所述至少两根发射天线电性相连的控制器；
控制器，用于获取信号发送策略，信号发送策略为UE与基站预先约定的策略，信号发送策略包括按照预设顺序通过至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至基站，n为大于等于1的整数；
控制器，还用于按照预设顺序从至少两根发射天线中依次选择n根发射天 线；
基带芯片，用于通过控制器选择的n根发射天线依次发送SRS信号至基站，基站根据接收到的各个SRS信号进行信道质量测量。
通过在UE中设置与至少两根发射天线电性相连的控制器，通过该控制器从至少两根发射天线中依次选择n根发射天线，进而使得基带芯片可以通过控制器选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
在第一方面中，控制器可以通过如下四种可能的获取方式来获取信号发送策略。具体的：
在第一种可能的实现方式中：控制器，还用于获取本地预设的信号发送策略。
在第二种可能的实现方式中：控制器，还用于接收基站发送的索引信息，根据预设对应关系，查询索引信息所对应的信号发送策略，预设对应关系为UE与基站预先约定的对应关系。
通过接收基站发送的索引信息，并根据预设对应关系查询索引信息对应的信号发送策略，降低了基站与UE之间交互所需耗用的资源。
在第三种可能的实现方式中：控制器，还用于：
接收基站发送的n根发射天线中的每根发射天线的重复次数；
根据预设的n根发射天线的排序以及重复次数，将按照排序且每根发射天线重复发射天线所对应的重复次数的策略确定为信号发送策略；n根发射天线的排序为UE与基站预先约定的排序。
在第四种可能的实现方式中：控制器与基带芯片电性相连；控制器，还用于：
获取基带芯片的输出信号，输出信号为二进制序列；
对所述输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数；
将所述m路信号中处于探测周期处的m位二进制数的排序，确定为所述二进制数所对应的发射天线的排序；
将按照所述排序发送SRS信号的策略确定为所述信号发送策略。
第二方面，提供了一种信道质量测量方法，该方法用于第一方面所述的UE中，该方法包括：
控制器获取信号发送策略，信号发送策略为UE与基站预先约定的策略，信号发送策略包括按照预设顺序通过至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至基站，n为大于等于1的整数；
控制器按照预设顺序从至少两根发射天线中依次选择n根发射天线；
基带芯片通过控制器选择的n根发射天线依次发送SRS信号至基站，基站根据接收到的各个SRS信号进行信道质量测量。
通过在UE中设置与至少两根发射天线电性相连的控制器，通过该控制器从至少两根发射天线中依次选择n根发射天线，进而使得基带芯片可以通过控制器选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
在第二方面中，控制器获取信号发送策略的获取方式可以包括如下四种可能的实现方式。具体的：
在第一种可能的实现方式中：控制器获取本地预设的信号发送策略。
在第二种可能的实现方式中：接收基站发送的索引信息；
控制器获取本地预设的信号发送策略，包括：
根据预设对应关系，查询索引信息所对应的信号发送策略，预设对应关系为UE与基站预先约定的对应关系。
在第三种可能的实现方式中：接收基站发送的n根发射天线中的每根发射天线的重复次数；
根据预设的n根发射天线的排序以及重复次数，将按照排序且每根发射天线重复发射天线所对应的重复次数的策略确定为信号发送策略；n根发射天线的排序为UE与基站预先约定的排序。
在第四种可能的实现方式中：获取基带芯片的输出信号，输出信号为二进制序列；
对所述输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数；
将所述m路信号中处于探测周期处的m位二进制数的排序，确定为所述 二进制数所对应的发射天线的排序；
将按照所述排序发送SRS信号的策略确定为所述信号发送策略。
第三方面，提供了一种信道质量测量装置，所述信道质量测量装置包括：获取单元、选择单元和发送单元。其中：
获取单元，用于获取信号发送策略，所述信号发送策略为所述UE与基站预先约定的策略，所述信号发送策略包括按照预设顺序通过所述至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至所述基站，n为大于等于1的整数；
选择单元，用于按照所述预设顺序从所述至少两根发射天线中依次选择所述n根发射天线；
发送单元，用于通过选择的所述n根发射天线依次发送所述SRS信号至所述基站，所述基站根据接收到的各个SRS信号进行信道质量测量。
通过获取信号发送策略，根据该信号发送策略从至少两根发射天线中依次选择n根发射天线，进而使得可以通过选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
可选地，获取单元、选择单元和发送单元还用于实现上述第二方面中可选实现方式中的信道质量测量方法，在此不再赘述。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1A和图1B是本发明实施例提供的UE的结构示意图。
图1C是本发明实施例提供的UE的性能仿真图。
图2是本发明一个实施例提供的信道质量测量方法的流程图。
图3是本发明一个实施例提供的信道质量测量装置的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
请参考图1A，其示出了本发明一个实施例提供的UE的结构示意图，如图1A所示，该UE中包括：基带芯片110、至少两根发射天线120(图1A以发射天线120有4根来举例)以及与至少两根发射天线120电性相连的控制器130。
控制器130，用于获取信号发送策略，信号发送策略为UE与基站预先约定的策略，信号发送策略包括按照预设顺序通过至少两根发射天线120中的n根发射天线发送SRS信号至基站，n为大于等于1的整数。其中，控制器130可以实际实现为计数器，本实施例对此并不做限定。
控制器130，还用于按照预设顺序从至少两根发射天线120中依次选择n根发射天线。
基带芯片110，用于通过控制器130选择的n根发射天线依次发送SRS信号至基站，基站根据接收到的各个SRS信号进行信道质量测量。
可选地，基带芯片110可以在不同的上行符号上通过控制器130当前选择的发射天线发送SRS信号至基站。比如，以信号发送策略为按照ant0、ant2和ant3的顺序发送SRS信号至基站来举例，当控制器130选择ant0时，基带芯片110通过ant0发送SRS信号至基站；当控制器130选择ant2时，基带芯片110通过ant2发送SRS信号至基站；当控制器130选择ant3时，基带芯片110通过ant3发送SRS信号至基站。
实际实现时，结合图1A，UE中还可以包括与基带芯片110、发射天线120和控制器130分别相连的天线选择开关140。控制器130控制该天线选择开关140与至少两根发射天线120中的需要选择的发射天线导通。比如，当控制器130需要选择ant0时，控制器130控制天线选择开关140与ant0导通。这样，当基带芯片110发送SRS信号时，即可通过导通的ant0发送SRS信号至基站。
基站在不同时刻接收到基带芯片110通过发射天线发送的SRS信号之后，即可根据接收到的该SRS信号计算该发射天线所对应的上行信号质量信息。
综上所述，本实施例提供的UE，通过在UE中设置与至少两根发射天线电性相连的控制器，通过该控制器从至少两根发射天线中依次选择n根发射天 线，进而使得基带芯片可以通过控制器选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
在上述实施例的一个示例性例子中，控制器130获取信号发送策略的获取方式可以包括如下几种：
第一种，
控制器130，还用于获取本地预设的信号发送策略。
具体的，UE中可以存储有与基站预先约定的信号发送策略，此时UE中的控制器130可以直接获取本地存储的信号发送策略。
比如，UE中可以存储有表1所示的信号发送策略，相应的，控制器130可以获取到表1所示的信号发送策略。
顺序 1 2 3 4
发射天线 ant0 ant2 ant1 ant3
表1
表1仅示出其中一个周期，实际实现时可以重复多个周期。并且表1仅以信号发送策略中包括UE中的4根发射天线为例，实际实现时，信号发送策略中还可以只包括其中的部分发射天线。比如，请参考表2，其示出了另一种可能的信号发送策略。
顺序 1 2 3
发射天线 ant0 ant2 ant1
表2
第二种，
UE可以与基站预先约定多种信号发送策略，并在需要进行信道质量测量时，基站为UE发送其中一种信号发送策略。具体的，UE和基站中可以存储有预设对应关系，该预设对应关系包括索引信息与信号发送策略之间的对应关系。当需要进行信道质量测量时，基站发送本次发送的信号发送策略所对应的索引信息至UE，UE中的控制器130接收该索引信息，并根据存储的预设对应关系，查询索引信息所对应的信号发送策略。
在一个示例性例子中，UE和基站预先约定的预设对应关系如表3所示，则当基站发送索引信息2至UE时，控制器130可以根据存储的该预设对应关系获取到本次使用的信号发送策略为策略3。
索引信息 0 1 2 3
信号发送策略 策略1 策略2 策略3 策略4
表3
其中，表3中的策略1、策略2、策略3和策略4的具体内容如下：
策略1：
顺序 1 2 3 4 5
发射天线 ant0 ant1 ant2 ant3 ant0
策略2：
顺序 1 2 3 4 5
发射天线 ant0 ant2 ant1 ant2 ant0
策略3：
顺序 1 2 3 4 5
发射天线 ant1 ant3 ant2 ant0 ant1
策略4：
顺序 1 2 3 4 5 6 7 8
发射天线 ant0 ant0 ant1 ant1 ant2 ant2 ant3 ant3
第三种：
UE中可以存储有与基站预先约定的发射天线的排序，当需要进行信道质量测量时，基站可以发送每根发射天线的重复次数。相应的，UE可以接收到基站发送的每根发射天线的重复次数，并在接收到重复次数之后，UE中的控制器130将按照预先约定的排序且每根发射天线重复发射天线所对应的重复次数的策略确定为信号发送策略。其中，基站为不同发射天线配置的重复次数可以相同也可以不同，本实施例对此并不做限定。
以基站为每根发射天线配置的重复次数相同，且UE与基站预先约定的发射天线的排序为表1所示的顺序为例，在基站配置的重复次数为2时，控制器130获取到的信号发送策略如表4所示。
顺序 1 2 3 4 5 6 7 8
发射天线 ant0 ant0 ant2 ant2 ant1 ant1 ant3 ant3
表4
需要说明的是，上述只是以基站为每根发射天线配置的重复次数相同来举例说明，可选地，基站为每根发射天线配置的重复次数还可以不同。此时：
作为一种可能的实现方式，基站可以直接发送每根发射天线的重复次数至UE，比如，基站发送2、1、3、1至UE，UE接收到之后，控制器130即可得知ant0重复2次、ant2重复1次、ant1重复3次且ant3重复1次，也即控制器130可以获得表5所示的信号发送策略。
顺序 1 2 3 4 5 6 7
发射天线 ant0 ant0 ant2 ant1 ant1 ant1 ant3
表5
作为另一种可能的实现方式，基站和UE还可以预先约定索引与重复配置之间的对应关系，基站发送索引至UE，UE中的控制器130根据存储的对应关系查询索引对应的重复配置，之后，控制器130即可得到信号发送策略。
比如，基站与UE约定的重复配置为表6所示，则当基站发送索引3至UE时，UE即可得到表7所示的信号发送策略。
索引 1 2 3 4
重复配置 重复配置1 重复配置2 重复配置3 重复配置4
表6
其中，表6中的重复配置1为ant0：1次、ant2：2次、ant1：1次以及ant3：3次；重复配置2为ant0：2次、ant2：1次、ant1：3次以及ant3：2次；重复配置3为ant0：1次、ant2：3次、ant1：2次以及ant3：1次；重复配置4为ant0：3次、ant2：1次、ant1：2次以及ant3：1次。
顺序 1 2 3 4 5 6 7
发射天线 ant0 ant2 ant2 ant2 ant1 ant1 ant3
表7
第四种：
请参考图1B，控制器130可以与基带芯片110电性相连，对于此种情况，控制器130可以通过如下方式获取信号发送策略。
第一，获取基带芯片110的输出信号，输出信号为二进制序列。
控制器130可以从相连的基带芯片110中获取基带芯片110的输出信号。
比如，控制器130获取到的输出信号为：00000 00000 00001 00001 00000 00000 00001 00001 00000 00000 00001 00001。
第二，对输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数。
比如，n＝4，则控制器130可以对输出信号的高低电平进行转换，得到1路信号。又比如，n＝6，控制器130可以对输出信号的高低电平进行转换，得到2路信号。
实际实现时，控制器130可以对输出信号中处于探测周期(sounding)处的高低电平进行转换，得到m-1路信号。其中，转换得到的m-1路信号与输出信号共同组成的m路信号在sounding周期处的m位二进制数能够标识n根发射天线中的每根发射天线。
比如，n＝4，控制器130可以将输出信号中T1+(4*N+1)*t时刻的低电平转换为高电平，将T1+(4*N+4)*t时刻的高电平转换为低电平，并将其他时刻的电平保持不变。其中，T1为输出信号中的第一个高电平的时刻，t＝T/2，T为输出信号中两个高电平的时间差，N的起始值为0。比如，控制器130转换得到的一路信号为：00000 00001 00000 00001 00000 00001 00000 00001 00000 00001 00000 00001。
又比如，n＝8，控制器130可以将输出信号中T1+(8*N+1)*t和T1+(8*N+5)*t时刻的低电平转换为高电平，将T1+(8*N+4)*t和T1+(8*N+8)*t时刻的高电平转换为低电平，其他时刻的高低电平保持不变，将转换后得到的信号作为第二路信号；控制器130可以将T1+(8*N+2)*t和T1+(8*N+4)*t时刻的高电平转换为低电平，将T1+(8*N+5)*t和T1+(8*N+7)*t时刻的低电平转换为高电平，并将输出信号中的其他时刻的高低电平保持不变，将转换后得到的信号作为第三路信号。其中，T1为输出信号中的第一个高电平的时刻，t＝T/2，T为输出信号中两个高电平的时间差，N的起始值为0。比如，控制器130转换得到的第二路信号为：00000 00000 00001 00001 00000 00000 00001 00001 00000 00000，转换得到的第三路信号为：00000 00001 00000 00001 00000 00001 00000 00001 00000 00001。
又比如，仍然以n＝8为例，控制器130可以将输出信号中T1+(8*N+1)*t和 T1+(8*N+5)*t时刻的低电平转换为高电平，将T1+(8*N+4)*t和T1+(8*N+8)*t时刻的高电平转换为低电平，其他时刻的高低电平保持不变，将转换后得到的信号作为第二路信号；控制器130可以将T1+(8*N+1)*t和T1+(8*N+3)*t时刻的高电平转换为低电平，将T1+(8*N+6)*t和T1+(8*N+8)*t时刻的低电平转换为高电平，并将输出信号中的其他时刻的高低电平保持不变，将转换后得到的信号作为第三路信号。
第三，将m路信号中处于探测周期处的m位二进制数的排序，确定为二进制数所对应的发射天线的排序。
比如，以n＝4为例，控制器130得到的两路信号分别为：
0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1
        ant0         ant1         ant2         ant3
其中，上表仅示出两路信号中的部分内容，实际实现时，每路信号还可以包括上述所说的其他内容，本实施例对此并不做限定。
由上表可知，发射天线的排序为ant0、ant0、ant1和ant2。
第四，将按照排序发送SRS信号的策略确定为信号发送策略。
控制器将按照上述确定的排序发送SRS信号的策略确定为信号发送策略，也即确定得到的信号发送策略为按照ant0、ant0、ant1和ant2的顺序，本实施例对此并不做限定。
需要补充说明的第一点是，上述实施例只是以控制器130通过上述几种获取方式获取信号发送策略来举例说明，可选地，基站还可以直接发送信号发送策略至UE，相应的，UE中的控制器130获取基站发送的信号发送策略，本实施例对此并不做限定。
需要补充说明的第二点是，基站根据接收到的SRS信号计算上行信道质量之后，即可根据通过每根发射天线发送的SRS信号计算该发射天线所对应的信道质量信息。也即基站可以得到n根发射天线所对应的信道质量信息。此后，基站可以根据n条信道质量信息计算UE的波束成形(Beamforming，BF)权值或者预编码权值。具体的，设UE中的发射天线的总根数为m，则当n＝m时，基站可以根据n条信道质量信息也即全维的信道质量信息计算BF权值或者预编码权值；而当n＜m时，基站可以先根据n条信道质量信息估计其余发射天线所对应的信道质量信息，然后再根据n条信道质量信息以及估计得到的m-n 条信道质量信息计算BF权值或者预编码权值。由于基站可以获得n维信道质量信息，n可以为大于1的整数，因此，基站根据n维信道质量信息计算得到的BF权值或者预编码权值的准确度较高，提高了UE的性能。
请参考图1C，其示出了UE中不包括控制器(AS0)、包括控制器且发射天线有两根(AS1(2TX))、包括控制器发射天线有四根且有3dB的***损耗(AS1(4TX 3dBLoss))、包括控制器发射天线有四根且无***损耗(AS(4TX))时的性能仿真图。如图1C所示，对于4发射天线无***损耗来说，本实施例公开的方案中有20％的增益；而对于4发射天线有3dB***损耗来说，本实施例公开的方案仍然有17％的增益。
需要补充说明的第三点是，UE中还可以包括其他部分，比如，还可以包括多个接收天线和处理器，本实施例对UE的具体结构并不做限定。
需要补充说明的第四点是，上述实施例只是以控制器直接获取信号发送策略来举例，可选地，当UE中包括处理器时，还可以由处理器通过上述获取方式来获取该信号发送策略，控制器130直接从处理器中获取信号发送策略，本实施例对获取信号发送策略的获取方式并不做限定。
综上所述，本实施例提供的UE，通过在UE中设置与至少两根发射天线电性相连的控制器，通过该控制器从至少两根发射天线中依次选择n根发射天线，进而使得基带芯片可以通过控制器选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
请参考图2，其示出了本发明一个实施例提供的信道质量测量方法的方法流程图，该信道质量测量方法可以用于图1A、图1B或者图1C所示的UE中。如图2所示，该信道质量测量方法可以包括：
步骤201，控制器获取信号发送策略，信号发送策略为UE与基站预先约定的策略，信号发送策略包括按照预设顺序通过至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至基站，n为大于等于1的整数。
步骤202，控制器按照预设顺序从至少两根发射天线中依次选择n根发射天线。
步骤203，基带芯片通过控制器选择的n根发射天线依次发送SRS信号至基站，基站根据接收到的各个SRS信号进行信道质量测量。
综上所述，本实施例提供的信道质量测量方法，通过控制器获取信号发送策略，根据该信号发送策略从至少两根发射天线中依次选择n根发射天线，进而使得基带芯片可以通过控制器选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
在上述实施例中，控制器获取信号发送策略的获取方式可以包括如下四种：
第一种：
控制器获取本地预设的信号发送策略。
第二种：
接收基站发送的索引信息；
根据预设对应关系，查询索引信息所对应的信号发送策略，预设对应关系为UE与基站预先约定的对应关系。
第三种：
接收基站发送的n根发射天线中的每根发射天线的重复次数；
根据预设的n根发射天线的排序以及重复次数，将按照排序且每根发射天线重复发射天线所对应的重复次数的策略确定为信号发送策略；n根发射天线的排序为UE与基站预先约定的排序。
第四种：
获取基带芯片的输出信号，输出信号为二进制序列；
对输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数；
将m路信号中处于探测周期处的m位二进制数的排序，确定为二进制数所对应的发射天线的排序；
将按照排序发送SRS信号的策略确定为信号发送策略。
需要说明的是，四种获取方式与上述实施例类似，本实施例在此不再赘述。
请参考图3，其示出了本发明一个实施例提供的信道质量测量装置的结构示意图，如图3所述，该信道质量测量装置可以包括：获取单元310、选择单元320和发送单元330。
获取单元310，用于获取信号发送策略，所述信号发送策略为所述UE与基站预先约定的策略，所述信号发送策略包括按照预设顺序通过所述至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至所述基站，n为大于等于1的整数；
选择单元320，用于按照所述预设顺序从所述至少两根发射天线中依次选择所述n根发射天线；
发送单元330，用于通过选择的所述n根发射天线依次发送所述SRS信号至所述基站，所述基站根据接收到的各个SRS信号进行信道质量测量。
综上所述，本实施例提供的信道质量测量装置，通过获取信号发送策略，根据该信号发送策略从至少两根发射天线中依次选择n根发射天线，进而使得可以通过选择的n根发射天线中的每根发射天线依次发送SRS信号至基站；解决了现有技术中由于UE中的多根发射天线并行发送SRS信号，因此每根发射天线的发射功率较低的问题；达到了在同一个上行符号中只通过一根发射天线发送SRS信号，提高每根发射天线的发射功率的效果。
可选地，所述获取单元310，还用于所述控制器获取本地预设的所述信号发送策略。
可选地，所述获取单元310，还用于接收所述基站发送的索引信息；根据预设对应关系，查询所述索引信息所对应的所述信号发送策略，所述预设对应关系为所述UE与所述基站预先约定的对应关系。
可选地，所述获取单元310，还用于接收所述基站发送的所述n根发射天线中的每根发射天线的重复次数；
根据预设的所述n根发射天线的排序以及所述重复次数，将按照所述排序且每根发射天线重复所述发射天线所对应的所述重复次数的策略确定为所述信号发送策略；所述n根发射天线的排序为所述UE与所述基站预先约定的排序。
可选地，所述获取单元310，还用于获取所述基带芯片的输出信号，所述 输出信号为二进制序列；
对所述输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数；
将所述m路信号中处于探测周期处的m位二进制数的排序，确定为所述二进制数所对应的发射天线的排序；
将按照所述排序发送SRS信号的策略确定为所述信号发送策略。
需要说明的是，本实施例提供的信道质量测量装置可以应用于图1A或者图1B所示的UE中，并通过UE中的控制器、基带芯片来实现上述所说的信道质量测量方法。
应当理解的是，在本文中使用的，除非上下文清楚地支持例外情况，单数形式“一个”(“a”、“an”、“the”)旨在也包括复数形式。还应当理解的是，在本文中使用的“和/或”是指包括一个或者一个以上相关联地列出的项目的任意和所有可能组合。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种用户设备UE，其特征在于，所述UE包括：基带芯片、至少两根发射天线以及与所述至少两根发射天线电性相连的控制器；
    所述控制器，用于获取信号发送策略，所述信号发送策略为所述UE与基站预先约定的策略，所述信号发送策略包括按照预设顺序通过所述至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至所述基站，n为大于等于1的整数；
    所述控制器，还用于按照所述预设顺序从所述至少两根发射天线中依次选择所述n根发射天线；
    所述基带芯片，用于通过所述控制器选择的所述n根发射天线依次发送所述SRS信号至所述基站，所述基站根据接收到的各个SRS信号进行信道质量测量。
  2. 根据权利要求1所述的UE，其特征在于，
    所述控制器，还用于获取本地预设的所述信号发送策略。
  3. 根据权利要求2所述的UE，其特征在于，
    所述控制器，还用于接收所述基站发送的索引信息，根据预设对应关系，查询所述索引信息所对应的所述信号发送策略，所述预设对应关系为所述UE与所述基站预先约定的对应关系。
  4. 根据权利要求1所述的UE，其特征在于，所述控制器，还用于：
    接收所述基站发送的所述n根发射天线中的每根发射天线的重复次数；
    根据预设的所述n根发射天线的排序以及所述重复次数，将按照所述排序且每根发射天线重复所述发射天线所对应的所述重复次数的策略确定为所述信号发送策略；所述n根发射天线的排序为所述UE与所述基站预先约定的排序。
  5. 根据权利要求1所述的UE，其特征在于，所述控制器与所述基带芯片电性相连；所述控制器，还用于：
    获取所述基带芯片的输出信号，所述输出信号为二进制序列；
    对所述输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数；
    将所述m路信号中处于探测周期处的m位二进制数的排序，确定为所述二进制数所对应的发射天线的排序；
    将按照所述排序发送SRS信号的策略确定为所述信号发送策略。
  6. 一种信道质量测量方法，其特征在于，用于用户设备UE中，所述UE中包括基带芯片、至少两根发射天线以及与所述至少两根发射天线电性相连的控制器，所述方法包括：
    所述控制器获取信号发送策略，所述信号发送策略为所述UE与基站预先约定的策略，所述信号发送策略包括按照预设顺序通过所述至少两根发射天线中的n根发射天线发送信道探测参考信号SRS至所述基站，n为大于等于1的整数；
    所述控制器按照所述预设顺序从所述至少两根发射天线中依次选择所述n根发射天线；
    所述基带芯片通过所述控制器选择的所述n根发射天线依次发送所述SRS信号至所述基站，所述基站根据接收到的各个SRS信号进行信道质量测量。
  7. 根据权利要求6所述的方法，其特征在于，所述控制器获取信号发送策略，包括：
    所述控制器获取本地预设的所述信号发送策略。
  8. 根据权利要求7所述的方法，其特征在于，所述控制器获取本地预设的所述信号发送策略之前，所述方法还包括：
    接收所述基站发送的索引信息；
    所述控制器获取本地预设的所述信号发送策略，包括：
    根据预设对应关系，查询所述索引信息所对应的所述信号发送策略，所述预设对应关系为所述UE与所述基站预先约定的对应关系。
  9. 根据权利要求6所述的方法，其特征在于，所述控制器获取信号发送策略，包括：
    接收所述基站发送的所述n根发射天线中的每根发射天线的重复次数；
    根据预设的所述n根发射天线的排序以及所述重复次数，将按照所述排序且每根发射天线重复所述发射天线所对应的所述重复次数的策略确定为所述信号发送策略；所述n根发射天线的排序为所述UE与所述基站预先约定的排序。
  10. 根据权利要求6所述的方法，其特征在于，所述控制器获取信号发送策略，包括：
    获取所述基带芯片的输出信号，所述输出信号为二进制序列；
    对所述输出信号中的高低电平进行转换，得到m-1路信号，m为大于等于log2n的最小整数；
    将所述m路信号中处于探测周期处的m位二进制数的排序，确定为所述二进制数所对应的发射天线的排序；
    将按照所述排序发送SRS信号的策略确定为所述信号发送策略。
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