CN106921423B - Method and equipment for determining analog beam - Google Patents
Method and equipment for determining analog beam Download PDFInfo
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- CN106921423B CN106921423B CN201511001288.5A CN201511001288A CN106921423B CN 106921423 B CN106921423 B CN 106921423B CN 201511001288 A CN201511001288 A CN 201511001288A CN 106921423 B CN106921423 B CN 106921423B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
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Abstract
The invention discloses a method and equipment for determining an analog beam, which are used for solving the problem that no solution is available at present for realizing analog forming in digital-analog mixed beam forming. The method comprises the following steps: the terminal measures a reference signal on each analog beam in a preset first analog beam set; the terminal selects one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result; and the terminal sends the number information of the first analog beam to the base station. The terminal measures the reference signal on each analog beam in the first analog beam set, namely performs channel measurement, and obtains the channel quality which may be experienced during service transmission in advance, so that the accuracy of channel quality measurement can be ensured.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining an analog beam.
Background
In view of the important role of Multiple Input Multiple Output (MIMO) technology in increasing peak rate and system spectrum utilization, wireless access technology standards such as Long Term Evolution (LTE)/LTE-a (LTE-Advanced) are constructed based on MIMO + Orthogonal Frequency Division Multiplexing (OFDM) technology. The performance gain of the MIMO technology comes from the space freedom degree that can be obtained by the multi-antenna system, so that one of the most important evolution directions of the MIMO technology in the standardization development process is the extension of dimension. In LTE Rel-8, MIMO transmission of up to 4 layers can be supported. The Rel-9 is used for enhancing the MU-MIMO technology, and 4 downlink data layers can be supported in MU-MIMO (Multi-User MIMO) Transmission of a Transmission Mode (TM) -8. The Rel-10 further improves the spatial resolution of the Channel state information by introducing an 8-port Channel state information Reference Signal (CSI-RS), a UE-specific Reference Signal (URS) and multiple granularity codebooks, and further extends the transmission capability of SU-MIMO (Single-User MIMO) to at most 8 data layers.
In a base station Antenna System adopting a conventional Passive Antenna System (PAS) structure, a plurality of Antenna ports (each port corresponding to an independent rf-if-baseband channel) are horizontally arranged, and a plurality of vertically-oriented arrays corresponding to each port are connected by rf cables. Therefore, the existing MIMO technology can only achieve optimization of spatial characteristics of each terminal signal in the horizontal dimension by adjusting relative amplitude/phase between different ports in the horizontal dimension, and can only adopt uniform sector-level forming in the vertical dimension. After an Active Antenna System (AAS) technology is introduced into a mobile communication System, a base station Antenna System can obtain a greater degree of freedom in a vertical dimension, and User Equipment (UE) level signal optimization can be achieved in a three-dimensional space.
Based on the above research, standardization and antenna technology development, the industry is further advancing the MIMO technology toward three-dimension and large-scale. Currently, 3GPP is developing research projects for 3D channel modeling, and then it is expected that research and standardization of FD-mimo (full Dimension mimo) technology for 8 antenna ports and below (EBF) and more than 8 ports (such as 16, 32 or 64) will be continued. The academic community has conducted more prospective research and testing work on MIMO technology based on larger scale antenna arrays (comprising one or hundreds of or even more elements). Academic research and preliminary channel actual measurement results show that the large-scale MIMO (MassiveMIMO) technology can greatly improve the utilization efficiency of the system frequency band and support a larger number of access users. Therefore, Massive MIMO technology is considered by various organizations as one of the most potential physical layer technologies in next-generation mobile communication systems.
Massive MIMO technology requires the use of large-scale antenna arrays. While maximum spatial resolution and optimal MU-MIMO performance can be achieved with all-digital arrays, this architecture requires a large number of analog-to-digital (AD)/digital-to-analog (DA) conversion periods and a large number of complete rf-baseband processing channels, which can be a significant burden in terms of both equipment cost and baseband processing complexity. In order to reduce the implementation cost and equipment complexity of the Massive MIMO technology, a digital-analog hybrid beamforming technology is provided. The digital-analog hybrid beamforming is to add a first-level beamforming, i.e., analog beamforming, to a radio frequency signal near the front end of an antenna system based on the conventional digital domain beamforming, as shown in fig. 1. Analog forming enables a sending signal to be roughly matched with a channel in a simpler mode. The dimension of the equivalent channel formed after analog shaping is smaller than the actual number of antennas, so that the AD/DA conversion devices, the number of digital channels and the corresponding baseband processing complexity required thereafter can be greatly reduced. The residual interference of the analog forming part can be processed once again in the digital domain, thereby ensuring the quality of MU-MIMO transmission.
Compared with full digital forming, digital-analog hybrid beam forming is a compromise scheme of performance and complexity, and has a high practical prospect in a system with a high frequency band and a large bandwidth or a large number of antennas. In the MIMO technology, especially for the MU-MIMO technology, the accuracy of the channel state information that can be obtained by the network side will directly determine the accuracy of precoding/beamforming and the efficiency of the scheduling algorithm, thereby affecting the overall system performance. According to the current LTE signal structure, all reference signals are inserted in the baseband, so that the channel state required for digital forming can be obtained through channel estimation. However, for the analog forming part, there is no way to estimate the reference signal inserted in the baseband, so that it is impossible to perform analog forming by directly using the channel state information obtained in the digital domain for both FDD and TDD.
In summary, there is no solution to how to implement analog beamforming in digital-analog hybrid beamforming.
Disclosure of Invention
The embodiment of the invention provides a method and equipment for determining an analog beam, which are used for solving the problem that no solution exists at present for how to realize analog forming in digital-analog mixed beam forming.
In a first aspect, a method of determining an analog beam includes:
the terminal measures a reference signal on each analog beam in a preset first analog beam set;
the terminal selects one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result;
and the terminal sends the number information of the first analog beam to the base station.
Before the terminal measures the reference signal on each analog beam in the preset first analog beam set, the method further includes:
the terminal receives the reference signal through different analog beams in the first analog beam set at different time; or
The terminal receives the reference signal through different analog beams in the first analog beam set on different subcarriers; or
And the terminal receives the reference signal through different analog beams in the first analog beam set at different time instants and on different subcarriers.
Based on any of the foregoing embodiments, optionally, after the terminal sends the number information of the first analog beam to the base station, the method further includes:
and the terminal receives a second analog beam set configured by the base station, wherein the analog beams in the second analog beam set are a set formed by analog beams which are screened out from the first analog beam set by taking the first analog beam as a center and have a set angle step with a set distance from the first analog beam.
Optionally, after the terminal receives the second analog beam set configured by the base station, the method further includes:
the terminal measures a reference signal on each analog beam in the second analog beam set respectively;
the terminal selects one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result;
and the terminal sends the number information of the second analog beam to the base station.
Before the terminal measures the reference signal on each analog beam in the second analog beam set, the method further includes:
the terminal receives the reference signal through different analog beams in the second analog beam set at different time; or
The terminal receives the reference signal through different analog beams in the second analog beam set on different subcarriers; or
And the terminal receives the reference signal through different analog beams in the second analog beam set at different time instants and on different subcarriers.
In the embodiment of the invention, the terminal measures the reference signal on each analog beam in the first analog beam set, namely performs channel measurement, and learns the channel quality possibly experienced during service transmission in advance, so that the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the terminal can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In a second aspect, a method of determining an analog beam includes:
for each terminal in the network, the base station measures a reference signal sent by the terminal on each analog beam in a preset first analog beam set;
and the base station selects one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result corresponding to each analog beam.
Before the base station measures a reference signal sent by the terminal on each analog beam in a preset first analog beam set, the method further includes:
the base station receives reference signals sent by the terminal on different analog beams in a preset first analog beam set at different moments; or
The base station receives reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or
And the base station receives reference signals sent by the terminal on different analog beams in a preset first analog beam set at different moments and on different subcarriers.
Optionally, the method further includes:
the base station determines that analog beams in the first analog beam set need to be screened according to the channel change condition, and screens the analog beams away from the first analog beam set by a set angle step by taking the first analog beam as a center so as to form a second analog beam set;
the base station configures the second set of analog beams to each terminal in a network.
Optionally, the method further includes:
for each terminal in the network, the base station measures a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively;
and the base station selects one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result.
Before the base station measures the reference signal sent by the terminal on each analog beam in the second analog beam set, the method further includes:
the base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or
The base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or
And the base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments and on different subcarriers.
In the embodiment of the invention, as for each terminal in the network, the base station respectively measures the reference signal sent by the terminal on each analog beam in the preset first analog beam set, the channel quality possibly experienced during service transmission can be obtained, and the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the base station can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In a third aspect, a terminal includes:
the measurement module is used for respectively measuring a reference signal on each analog beam in a preset first analog beam set;
a selecting module, configured to select one analog beam from the first analog beam set according to a measurement result of the measuring module, as a first analog beam used by the terminal;
and the reporting module is used for sending the number information of the first analog beam to the base station.
Wherein, the terminal further includes:
a receiving module, configured to receive the reference signal through different analog beams in the first analog beam set at different time instants; or receiving the reference signal over a different analog beam of the first set of analog beams on a different subcarrier; or receiving the reference signal through different analog beams in the first set of analog beams at different time instants and on different subcarriers.
Optionally, the receiving module is further configured to:
receiving a second analog beam set configured by the base station, wherein the analog beams in the second analog beam set are a set of analog beam formations screened from the first analog beam set by taking the first analog beam as a center and having a set angle step from the first analog beam.
Optionally, the measurement module is further configured to: measuring a reference signal on each analog beam in the second set of analog beams, respectively;
the selection module is further configured to: selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module;
the reporting module is further configured to: and sending the number information of the second analog beam to the base station.
Wherein the receiving module is further configured to:
receiving the reference signal through a different analog beam of the second set of analog beams at a different time instance; or receiving the reference signal over a different analog beam of the second set of analog beams on a different subcarrier; or receiving the reference signal through a different analog beam in the second set of analog beams at a different time and on a different subcarrier.
In a fourth aspect, a base station includes:
the measurement module is used for respectively measuring a reference signal sent by each terminal on each analog beam in a preset first analog beam set for each terminal in a network;
and the processing module is used for selecting one analog beam from the first analog beam set as the first analog beam used by the terminal according to the measurement result corresponding to each analog beam.
Wherein the base station further comprises:
a receiving module, configured to receive, at different times, reference signals sent by the terminal on different analog beams in a preset first analog beam set; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set at different time instants and on different subcarriers.
Optionally, the processing module is further configured to:
determining that analog beams in the first analog beam set need to be screened according to the channel change condition; screening out the analog beams with a set angle step from the first analog beam set by taking the first analog beam as a center to form a second analog beam set; and configuring the second analog beam set to each terminal in the network.
Optionally, the measurement module is further configured to: for each terminal in the network, measuring a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively;
the processing module is further configured to: and selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module.
Wherein the receiving module is further configured to:
receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or receiving, at different time and on different subcarriers, reference signals sent by the terminal on different analog beams in a preset second analog beam set.
In the embodiment of the invention, the terminal measures the reference signal on each analog beam in the first analog beam set, namely performs channel measurement, and learns the channel quality possibly experienced during service transmission in advance, so that the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the terminal can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In the embodiment of the invention, as for each terminal in the network, the base station respectively measures the reference signal sent by the terminal on each analog beam in the preset first analog beam set, the channel quality possibly experienced during service transmission can be obtained, and the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the base station can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In a fifth aspect, another terminal may perform the steps described in the first embodiment of the present invention to ensure accuracy of channel quality measurement and improve accuracy of analog beamforming, where the terminal includes: a receiver, a transmitter, a processor, and a memory, wherein:
the processor is used for reading the program in the memory and executing the following processes: measuring a reference signal on each analog beam in a preset first analog beam set; according to the measurement result, selecting one analog beam from the first analog beam set as a first analog beam used by the terminal; sending the number information of the first analog wave beam to a base station through the transmitter;
the receiver is used for receiving data under the control of the processor;
the transmitter is used for receiving and transmitting data under the control of the processor.
Wherein the receiver is configured to: receiving the reference signal through different analog beams of the first set of analog beams at different time instances; or receiving the reference signal over a different analog beam of the first set of analog beams on a different subcarrier; or receiving the reference signal through different analog beams in the first set of analog beams at different time instants and on different subcarriers.
Optionally, the receiver is further configured to:
receiving a second analog beam set configured by the base station, wherein the analog beams in the second analog beam set are a set of analog beam formations screened from the first analog beam set by taking the first analog beam as a center and having a set angle step from the first analog beam.
Optionally, the processor is further configured to read a program in the memory, and execute the following processes: measuring a reference signal on each analog beam in the second set of analog beams, respectively; selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module; and sending the number information of the second analog beam to the base station through the transmitter.
Wherein the receiver is further configured to:
receiving the reference signal through a different analog beam of the second set of analog beams at a different time instance; or receiving the reference signal over a different analog beam of the second set of analog beams on a different subcarrier; or receiving the reference signal through a different analog beam in the second set of analog beams at a different time and on a different subcarrier.
In the embodiment of the invention, the terminal measures the reference signal on each analog beam in the first analog beam set, namely performs channel measurement, and learns the channel quality possibly experienced during service transmission in advance, so that the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the terminal can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In a sixth aspect, another base station, where the base station may perform the steps described in the second embodiment of the present invention to ensure the accuracy of channel quality measurement and improve the accuracy of analog beamforming, includes: a receiver, a transmitter, a processor, and a memory, wherein:
the processor is used for reading the program in the memory and executing the following processes:
for each terminal in a network, measuring a reference signal sent by the terminal on each analog beam in a preset first analog beam set; the analog beam set is used for selecting one analog beam from the first analog beam set according to the measurement result corresponding to each analog beam as a first analog beam used by the terminal;
the receiver is used for receiving data under the control of the processor;
the transmitter is used for receiving and transmitting data under the control of the processor.
Wherein the receiver is configured to: receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set at different moments; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set at different time instants and on different subcarriers.
Based on any of the above embodiments, optionally, the processor is further configured to read a program in the memory, and execute the following processes:
determining that analog beams in the first analog beam set need to be screened according to the channel change condition; screening out the analog beams with a set angle step from the first analog beam set by taking the first analog beam as a center to form a second analog beam set; control the transmitter to configure the second set of analog beams to each terminal in a network.
Optionally, the processor is further configured to read the program in the memory, and execute the following processes: for each terminal in the network, measuring a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively; and selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result.
Optionally, the receiver is further configured to:
receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or receiving, at different time and on different subcarriers, reference signals sent by the terminal on different analog beams in a preset second analog beam set.
In the embodiment of the invention, as for each terminal in the network, the base station respectively measures the reference signal sent by the terminal on each analog beam in the preset first analog beam set, the channel quality possibly experienced during service transmission can be obtained, and the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the base station can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
Drawings
Fig. 1 is a schematic diagram of digital-analog hybrid beamforming;
fig. 2 is a flowchart illustrating a method for determining an analog beam according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating another method for determining an analog beam according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a terminal according to a third embodiment of the present invention;
fig. 5 is a schematic diagram of a base station according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of another terminal according to a fifth embodiment of the present invention;
fig. 7 is a schematic diagram of another base station in the sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technology provided by the embodiment of the present invention can be used in various communication systems, such as current 2G, 3G communication systems and next-generation communication systems, such as Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA, Code Division Multiple Access) systems, Time Division Multiple Access (TDMA) systems, Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) systems, Frequency Division Multiple Access (FDMA, Frequency Division Multiple Access) systems, Orthogonal Frequency Division Multiple Access (OFDMA), FDMA (SC-FDMA) systems, General Packet Radio Service (GPRS, General Packet Radio Service) systems, Long Term Evolution (LTE, Long Term Evolution) systems, and other single carrier communication systems.
The user equipment in embodiments of the present invention may be a wireless terminal, which may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (e.g., RAN).
A base station in embodiments of the present invention may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a base Station (NodeB) in WCDMA, or an evolved Node B (NodeB or eNB or e-NodeB) in LTE, which is not limited in the embodiment of the present invention.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto. It is to be understood that the embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
In an embodiment of the present invention, a method for determining an analog beam is provided, where a base station may perform analog domain beam forming for a terminal based on a first analog beam or a second analog beam reported by the terminal in a downlink measurement and reporting manner, and a specific scheme is shown in fig. 2, where the method includes:
s21, the terminal measures a reference signal on each analog beam in a preset first analog beam set;
in this step, the reference signals measured by the terminal are: and the base station respectively transmits a reference signal through each analog beam in the first analog beam set by adopting a set beam scanning mode so as to enable each terminal in the network to measure based on the reference signals on different analog beams. For example, the base station transmits the reference signal through each analog beam in the first analog beam set in a broadcast manner.
Wherein each analog beam in the first analog beam set points to a different direction.
And S22, the terminal selects one analog beam from the first analog beam set as the first analog beam used by the terminal according to the measurement result.
For example, the terminal may select an analog beam capable of maximizing the shaped SNR as the first analog beam according to a signal-to-noise ratio maximization principle.
And S23, the terminal sends the number information of the first analog beam to the base station, so that the base station can perform analog domain beam forming for the terminal according to the first analog beam.
In the embodiment of the invention, a terminal measures a reference signal on each analog beam in a preset first analog beam set respectively; selecting one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result; and finally, sending the number information of the first analog beam to the base station. By adopting the scheme provided by the embodiment of the invention, the terminal respectively measures the reference signal on each analog beam in the first analog beam set, namely performs channel measurement, and learns the channel quality possibly experienced during service transmission in advance, so that the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the terminal can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In implementation, before S21, the terminal receives the reference signals on different analog beams in any one of three alternative ways:
in mode 1, the terminal receives the reference signal through different analog beams in the first analog beam set at different time instants.
In this way, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set at different times.
For example, when the base station side transmits the reference signal, the reference signal may be transmitted in units of subframes, that is, the base station transmits the reference signal through different analog beams in the first analog beam set on different subframes; the reference signal may also be transmitted in units of time slots, i.e. the base station transmits the reference signal through different analog beams in the first set of analog beams on different time slots.
Wherein, the corresponding relation between the time and the number of the analog beam is understood to be consistent by the base station and the terminal. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
Mode 2, the terminal receives the reference signal through different analog beams in the first analog beam set on different subcarriers.
In this way, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set on different subcarriers.
Wherein, the base station and the terminal understand the corresponding relation between the subcarrier and the analog beam number consistently. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
In mode 3, the terminal receives the reference signal through different analog beams in the first analog beam set at different time instants and on different subcarriers.
In this way, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set at different times and on different subcarriers.
Wherein, the corresponding relations between the sub-carriers, the time and the numbers of the analog beams are understood to be consistent by the base station and the terminal. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
In this embodiment, based on any of the above embodiments, after S23, the method further includes:
and the terminal receives a second analog beam set configured by the base station, wherein the analog beams in the second analog beam set are analog beams which are separated from the first analog beam set by a set angle step by taking the first analog beam as a center from the first analog beam set so as to form a set formed by the second analog beam set.
Specifically, the base station further determines whether the forming accuracy needs to be further improved according to the channel change condition, if the channel change is slow, the base station selects a part of analog beams from a first analog beam set according to the first analog beam reported by the terminal, with the first analog beam as a center and with a set step length, and uses the selected analog beams as a second analog beam set, where the first analog beam set corresponds to a group of wide analog domain beams, and the second analog beam set formed after the selection corresponds to a group of narrow analog domain beams.
For example, a group of analog beams closest to the elevation and the azimuth corresponding to the first analog beam is selected from the first analog beam set by taking the elevation and the azimuth corresponding to the first analog beam as a center to form a second analog beam set.
In the implementation, if the base station determines that the shaping precision does not need to be improved, the base station performs analog domain beam shaping for the terminal according to the first analog beam reported by the terminal; and if the base station determines that the shaping precision needs to be improved, determining a second analog beam set, and carrying out analog domain beam shaping for the terminal according to a second analog beam reported by the terminal or a second analog beam determined by the base station through measurement. The scheme for determining the second analog beam by the base station through measurement is described in the second embodiment of the present invention, and is not described again here.
Further, after the terminal receives the second set of analog beams configured by the base station, the method further includes:
the terminal measures a reference signal on each analog beam in the second set of analog beams;
the terminal selects one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result;
and the terminal sends the number information of the second analog beam to the base station, so that the base station can carry out analog domain beam forming for the terminal according to the second analog beam.
Optionally, before the terminal measures the reference signal on each analog beam in the second analog beam set, the terminal receives the reference signal on a different analog beam in any one of the following three optional manners:
firstly, the terminal receives the reference signals through different analog beams in a second analog beam set at different time.
Correspondingly, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the second analog beam set at different times.
Wherein, the corresponding relation between the time and the number of the analog beam is understood to be consistent by the base station and the terminal. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
And secondly, the terminal receives the reference signals through different analog beams in a second analog beam set on different subcarriers.
In this way, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the second analog beam set on different subcarriers.
Wherein, the base station and the terminal understand the corresponding relation between the subcarrier and the analog beam number consistently. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
And thirdly, the terminal receives the reference signal through different analog beams in the second analog beam set at different time instants and on different subcarriers.
In this way, when the base station side transmits the reference signal, the reference signal is transmitted through different analog beams in the second analog beam set at different time and on different subcarriers.
Wherein, the corresponding relations between the sub-carriers, the time and the numbers of the analog beams are understood to be consistent by the base station and the terminal. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
In a second embodiment of the present invention, a method for determining an analog beam is provided, where a base station determines, in an uplink measurement manner, a first analog beam or a second analog beam used by each terminal in a network, and performs an analog beam for each terminal based on the determined first analog beam or second analog beam, where a specific scheme is shown in fig. 3, and includes:
s31, for each terminal in the network, the base station respectively measures the reference signal sent by the terminal on each analog beam in a preset first analog beam set;
s32, the base station selects one analog beam from the first analog beam set as the first analog beam used by the terminal according to the measurement result corresponding to each analog beam.
In the embodiment of the invention, for each terminal in a network, a base station firstly measures a reference signal sent by the terminal on each analog beam in a preset first analog beam set; and selecting one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result corresponding to each analog beam, so that the base station can perform analog domain beam forming for the terminal according to the first analog beam. By adopting the scheme provided by the embodiment of the invention, as for each terminal in the network, the base station respectively measures the reference signal sent by the terminal on each analog beam in the preset first analog beam set, the channel quality possibly experienced during service transmission can be obtained, and the accuracy of channel quality measurement can be ensured; in addition, in the measurement process, the base station can acquire the forming effect of each analog beam in the first analog beam set, so that a more accurate analog beam can be selected from the first analog beam set, and the accuracy of analog forming is improved.
In implementation, before S31, the base station receives the reference signal transmitted by the terminal on each analog beam in the preset first analog beam set by using any one of the following three optional receiving manners:
in a first method, a base station receives reference signals sent by a terminal on different analog beams in a preset first analog beam set at different times.
In this way, when the terminal transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set at different times.
Wherein, the corresponding relation between the time and the number of the analog beam is understood to be consistent by the base station and the terminal. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
And in the second mode, the base station receives the reference signals sent by the terminal on different analog beams in the preset first analog beam set on different subcarriers.
In this way, when the terminal transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set on different subcarriers.
Wherein, the base station and the terminal understand the corresponding relation between the subcarrier and the analog beam number consistently. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
And in a third mode, the base station receives the reference signals sent by the terminal on different analog beams in the preset first analog beam set at different time and on different subcarriers.
In this way, when the terminal transmits the reference signal, the reference signal is transmitted through different analog beams in the first analog beam set at different time instants and on different subcarriers.
Wherein, the corresponding relations between the sub-carriers, the time and the numbers of the analog beams are understood to be consistent by the base station and the terminal. The correspondence may be determined by the base station and notified to each terminal, may be determined by negotiation between the base station and the terminal, or may be specified in a protocol.
Based on any of the foregoing embodiments, optionally, after the base station selects one analog beam from the first analog beam set according to the measurement result corresponding to each analog beam, the method further includes:
the base station determines that analog beams in the first analog beam set need to be screened according to the channel change condition;
the base station screens out the simulation wave beams which are away from the first simulation wave beam by a set angle step length from the first simulation wave beam set to form a second simulation wave beam set;
the base station configures a second set of analog beams to each terminal in the network.
Specifically, after determining the first analog beam, the base station determines whether the forming accuracy needs to be further improved according to the channel variation condition, that is, whether the analog beams in the first analog beam set need to be screened. After the second analog beam set is formed, the second analog beam set is configured to each terminal in the network, for example, notified to each terminal in a broadcast manner.
In an implementation, after the base station configures the second analog beam set to each terminal in the network, the method further includes:
for each terminal in the network, the base station measures a reference signal sent by the terminal on each analog beam in the second analog beam set;
and the base station selects one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result, so that the base station can perform analog domain beam forming for the terminal according to the second analog beam.
Optionally, before the base station measures the reference signal sent by the terminal on each analog beam in the second analog beam set, the method further includes:
the base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or
The base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or
And the base station receives the reference signals sent by the terminal on different analog beams in the preset second analog beam set at different time and on different subcarriers.
The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
Based on the same inventive concept, a third embodiment of the present invention provides a terminal, where the terminal can execute the steps described in the first embodiment of the present invention to ensure the accuracy of channel quality measurement and improve the accuracy of analog forming, as shown in fig. 4, the terminal includes:
a measurement module 41, configured to measure a reference signal on each analog beam in a preset first analog beam set;
a selecting module 42, configured to select one analog beam from the first analog beam set according to the measurement result of the measuring module 41, as a first analog beam used by the terminal;
a reporting module 43, configured to send the number information of the first analog beam to the base station.
Optionally, the terminal further includes:
a receiving module 44, configured to receive the reference signal through different analog beams in the first analog beam set at different time instants; or receiving the reference signal over a different analog beam of the first set of analog beams on a different subcarrier; or receiving the reference signal through different analog beams in the first set of analog beams at different time instants and on different subcarriers.
Optionally, the receiving module 44 is further configured to:
receiving a second analog beam set configured by the base station, wherein the analog beams in the second analog beam set are a set of analog beam formations screened from the first analog beam set by taking the first analog beam as a center and having a set angle step from the first analog beam.
Optionally, the measurement module 41 is further configured to: measuring a reference signal on each analog beam in the second set of analog beams, respectively;
the selection module 42 is further configured to: selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module;
the reporting module 43 is further configured to: and sending the number information of the second analog beam to the base station.
Optionally, the receiving module 44 is further configured to:
receiving the reference signal through a different analog beam of the second set of analog beams at a different time instance; or receiving the reference signal over a different analog beam of the second set of analog beams on a different subcarrier; or receiving the reference signal through a different analog beam in the second set of analog beams at a different time and on a different subcarrier.
Based on the same inventive concept, a fourth embodiment of the present invention provides a base station, where the base station can perform the steps described in the second embodiment of the present invention to ensure the accuracy of channel quality measurement and improve the accuracy of analog forming, as shown in fig. 5, where the base station includes:
a measurement module 51, configured to measure, for each terminal in a network, a reference signal sent by the terminal on each analog beam in a preset first analog beam set;
the processing module 52 is configured to select one analog beam from the first analog beam set according to the measurement result corresponding to each analog beam, as the first analog beam used by the terminal.
Optionally, the base station further includes:
a receiving module 53, configured to receive, at different time, reference signals sent by the terminal on different analog beams in a preset first analog beam set; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set at different time instants and on different subcarriers.
Based on any of the above embodiments, optionally, the processing module 52 is further configured to:
determining that analog beams in the first analog beam set need to be screened according to the channel change condition; screening out the analog beams with a set angle step from the first analog beam set by taking the first analog beam as a center to form a second analog beam set; and configuring the second analog beam set to each terminal in the network.
Optionally, the measurement module 51 is further configured to: for each terminal in the network, measuring a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively;
the processing module 52 is further configured to: according to the measurement result of the measurement module 51, one analog beam is selected from the second analog beam set as a second analog beam used by the terminal, and data transmission is performed with the terminal through the second analog beam.
Optionally, the receiving module 53 is further configured to:
receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or receiving, at different time and on different subcarriers, reference signals sent by the terminal on different analog beams in a preset second analog beam set.
Based on the same inventive concept, in a fifth embodiment of the present invention, another terminal is provided, where the terminal can execute the steps described in the first embodiment of the present invention to ensure the accuracy of channel quality measurement and improve the accuracy of analog forming, as shown in fig. 6, the terminal includes: a receiver 61, a transmitter 62, a processor 63, and a memory 64, wherein:
a processor 63 for reading the program in the memory 64 and executing the following processes: measuring a reference signal on each analog beam in a preset first analog beam set; according to the measurement result, selecting one analog beam from the first analog beam set as a first analog beam used by the terminal; the numbering information of the first analog beam is sent to the base station by the transmitter 62.
A receiver 61 for receiving data under control of a processor 63.
A transmitter 62 for receiving and transmitting data under the control of a processor 63.
Wherein in fig. 6 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 63 and various circuits of memory represented by memory 64 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. A receiver 61 and a transmitter 62, which provide the means for communicating with various other apparatus over a transmission medium. The user interface 65 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 63 is responsible for managing the bus and general processing and may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 64 may be used to store data used by the processor 63 in performing operations.
Alternatively, the processor 63 may be a CPU (central processing unit), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD).
Optionally, the receiver 61 is configured to receive the reference signal through different analog beams in the first analog beam set at different time instances; or receiving the reference signal over a different analog beam of the first set of analog beams on a different subcarrier; or receiving the reference signal through different analog beams in the first set of analog beams at different time instants and on different subcarriers.
Optionally, the receiver 61 is further configured to:
receiving a second analog beam set configured by the base station, wherein the analog beams in the second analog beam set are a set of analog beam formations screened from the first analog beam set by taking the first analog beam as a center and having a set angle step from the first analog beam.
Optionally, the processor 63 is further configured to read a program in the memory 64, and execute the following processes: measuring a reference signal on each analog beam in the second set of analog beams, respectively; selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module; the numbering information of the second analog beam is sent to the base station by the transmitter 62.
Optionally, the receiver 61 is further configured to:
receiving the reference signal through a different analog beam of the second set of analog beams at a different time instance; or receiving the reference signal over a different analog beam of the second set of analog beams on a different subcarrier; or receiving the reference signal through a different analog beam in the second set of analog beams at a different time and on a different subcarrier.
Based on the same inventive concept, in a sixth embodiment of the present invention, another base station is provided, where the base station can perform the steps described in the second embodiment of the present invention to ensure the accuracy of channel quality measurement and improve the accuracy of analog forming, as shown in fig. 7, the base station includes: a receiver 71, a transmitter 72, a processor 73, and a memory 74, wherein:
a processor 73 for reading the program in the memory 74, and executing the following processes:
for each terminal in a network, measuring a reference signal sent by the terminal on each analog beam in a preset first analog beam set; and the analog beam selection unit is configured to select one analog beam from the first analog beam set according to the measurement result corresponding to each analog beam, and the selected analog beam is used as the first analog beam used by the terminal.
A receiver 71 for receiving data under the control of a processor 73.
A transmitter 72 for receiving and transmitting data under the control of a processor 73.
Wherein in fig. 7 the bus architecture may comprise any number of interconnected buses and bridges, in particular one or more processors represented by processor 73 and various circuits of memory represented by memory 74, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. A receiver 71 and a transmitter 72 providing the means for communicating with various other apparatus over a transmission medium.
The processor 73 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 74 may be used to store data used by the processor 73 in performing operations.
Alternatively, the processor 73 may be a CPU, ASIC, FPGA or CPLD.
Optionally, the receiver 71 is configured to receive, at different time instants, reference signals sent by the terminal on different analog beams in a preset first analog beam set; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set at different time instants and on different subcarriers.
Based on any of the above embodiments, optionally, the processor 73 is further configured to read a program in the memory 74, and execute the following processes:
determining that analog beams in the first analog beam set need to be screened according to the channel change condition; screening out the analog beams with a set angle step from the first analog beam set by taking the first analog beam as a center to form a second analog beam set; the transmitter 72 is controlled to configure the second set of analog beams to each terminal in the network.
Optionally, the processor 73 is further configured to read a program in the memory 74, and execute the following processes: for each terminal in the network, measuring a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively; and selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result.
Optionally, the receiver 71 is further configured to:
receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or receiving, at different time and on different subcarriers, reference signals sent by the terminal on different analog beams in a preset second analog beam set.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A method for determining an analog beam, the method comprising:
the terminal measures a reference signal on each analog beam in a preset first analog beam set;
the terminal selects one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result;
the terminal sends the number information of the first analog wave beam to a base station;
the terminal receives a second analog beam set configured by the base station, wherein analog beams in the second analog beam set are a set formed by analog beams which are screened out from the first analog beam set by taking the first analog beam as a center and have a set angle step with the first analog beam;
the terminal measures a reference signal on each analog beam in the second analog beam set respectively;
the terminal selects one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result;
and the terminal sends the number information of the second analog beam to the base station.
2. The method of claim 1, wherein before the terminal measures the reference signal on each analog beam in the preset first analog beam set, the method further comprises:
the terminal receives the reference signal through different analog beams in the first analog beam set at different time; or
The terminal receives the reference signal through different analog beams in the first analog beam set on different subcarriers; or
And the terminal receives the reference signal through different analog beams in the first analog beam set at different time instants and on different subcarriers.
3. The method of claim 1, wherein before the terminal separately measures the reference signal on each analog beam in the second set of analog beams, further comprising:
the terminal receives the reference signal through different analog beams in the second analog beam set at different time; or
The terminal receives the reference signal through different analog beams in the second analog beam set on different subcarriers; or
And the terminal receives the reference signal through different analog beams in the second analog beam set at different time instants and on different subcarriers.
4. A method for determining an analog beam, the method comprising:
for each terminal in the network, the base station measures a reference signal sent by the terminal on each analog beam in a preset first analog beam set;
the base station selects one analog beam from the first analog beam set as a first analog beam used by the terminal according to the measurement result corresponding to each analog beam;
the base station screens out the simulation wave beams which are away from the first simulation wave beam by a set angle step length from the first simulation wave beam set by taking the first simulation wave beam as a center according to the change condition of a channel so as to form a second simulation wave beam set;
the base station configures the second set of analog beams to each terminal in a network.
5. The method of claim 4, wherein before the base station performs the measurement on the reference signal respectively transmitted by the terminal on each analog beam in the preset first analog beam set, the method further comprises:
the base station receives reference signals sent by the terminal on different analog beams in a preset first analog beam set at different moments; or
The base station receives reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or
And the base station receives reference signals sent by the terminal on different analog beams in a preset first analog beam set at different moments and on different subcarriers.
6. The method of claim 4, further comprising:
for each terminal in the network, the base station measures a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively;
and the base station selects one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result.
7. The method of claim 5, wherein before the base station separately measures the reference signal transmitted by the terminal on each analog beam in the second set of analog beams, further comprising:
the base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or
The base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or
And the base station receives reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments and on different subcarriers.
8. A terminal, characterized in that the terminal comprises:
the measurement module is used for respectively measuring a reference signal on each analog beam in a preset first analog beam set;
a selecting module, configured to select one analog beam from the first analog beam set according to a measurement result of the measuring module, as a first analog beam used by the terminal;
the reporting module is used for sending the number information of the first analog wave beam to a base station;
a receiving module, configured to receive a second analog beam set configured by the base station, where an analog beam in the second analog beam set is a set formed by analog beams screened from the first analog beam set and having a set angle step from the first analog beam;
the measurement module is further configured to: measuring a reference signal on each analog beam in the second set of analog beams, respectively;
the selection module is further configured to: selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module;
the reporting module is further configured to: and sending the number information of the second analog beam to the base station.
9. The terminal of claim 8, wherein the receiving module is further configured to:
receiving the reference signal through different analog beams of the first set of analog beams at different time instances; or receiving the reference signal over a different analog beam of the first set of analog beams on a different subcarrier; or receiving the reference signal through different analog beams in the first set of analog beams at different time instants and on different subcarriers.
10. The terminal of claim 8, wherein the receiving module is further configured to:
receiving the reference signal through a different analog beam of the second set of analog beams at a different time instance; or receiving the reference signal over a different analog beam of the second set of analog beams on a different subcarrier; or receiving the reference signal through a different analog beam in the second set of analog beams at a different time and on a different subcarrier.
11. A base station, characterized in that the base station comprises:
the measurement module is used for respectively measuring a reference signal sent by each terminal on each analog beam in a preset first analog beam set for each terminal in a network;
a processing module, configured to select one analog beam from the first analog beam set according to a measurement result corresponding to each analog beam, where the one analog beam is used as a first analog beam used by the terminal; according to the channel variation condition, filtering out the analog beams which are away from the first analog beam by a set angle step from the first analog beam set by taking the first analog beam as a center so as to form a second analog beam set; and configuring the second analog beam set to each terminal in the network.
12. The base station of claim 11, wherein the base station further comprises:
a receiving module, configured to receive, at different times, reference signals sent by the terminal on different analog beams in a preset first analog beam set; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set on different subcarriers; or receiving reference signals sent by the terminal on different analog beams in a preset first analog beam set at different time instants and on different subcarriers.
13. The base station of claim 11, wherein the measurement module is further configured to: for each terminal in the network, measuring a reference signal transmitted by the terminal on each analog beam in the second analog beam set respectively;
the processing module is further configured to: and selecting one analog beam from the second analog beam set as a second analog beam used by the terminal according to the measurement result of the measurement module.
14. The base station of claim 12, wherein the receiving module is further configured to:
receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set at different moments; or receiving reference signals sent by the terminal on different analog beams in a preset second analog beam set on different subcarriers; or receiving, at different time and on different subcarriers, reference signals sent by the terminal on different analog beams in a preset second analog beam set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511001288.5A CN106921423B (en) | 2015-12-28 | 2015-12-28 | Method and equipment for determining analog beam |
| PCT/CN2016/107529 WO2017114054A1 (en) | 2015-12-28 | 2016-11-28 | Method and device for determining analog beam |
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| CN201511001288.5A CN106921423B (en) | 2015-12-28 | 2015-12-28 | Method and equipment for determining analog beam |
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| CN110635828B (en) * | 2018-06-22 | 2022-03-25 | 中兴通讯股份有限公司 | Channel quality information processing method and device |
| CN113424459B (en) * | 2019-01-29 | 2022-11-08 | 华为技术有限公司 | Beam management method and device for device communication |
| CN116980007A (en) * | 2022-04-24 | 2023-10-31 | 华为技术有限公司 | Communication method and communication device based on array grouping |
| CN116054892A (en) * | 2023-02-20 | 2023-05-02 | 西安电子科技大学 | Adaptive beam forming method for MU-MIMO system |
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| WO2002039543A1 (en) * | 2000-11-10 | 2002-05-16 | Am Group Corporation | Direction-agile antenna system for wireless communications |
| CN104303477A (en) * | 2012-05-10 | 2015-01-21 | 三星电子株式会社 | Communication method and apparatus using analog and digital hybrid beamforming |
| WO2015065152A1 (en) * | 2013-11-04 | 2015-05-07 | 엘지전자 주식회사 | Method and apparatus for transmitting signal in wireless communication system |
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| KR20130110396A (en) * | 2012-03-29 | 2013-10-10 | 삼성전자주식회사 | Method and apparatus for reference signal design in mixed analog/digital beam forming system |
| KR101871726B1 (en) * | 2014-03-24 | 2018-06-27 | 엘지전자 주식회사 | Method of performing a hybrid beamforming in a wireless communication system and apparatus therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002039543A1 (en) * | 2000-11-10 | 2002-05-16 | Am Group Corporation | Direction-agile antenna system for wireless communications |
| CN104303477A (en) * | 2012-05-10 | 2015-01-21 | 三星电子株式会社 | Communication method and apparatus using analog and digital hybrid beamforming |
| WO2015065152A1 (en) * | 2013-11-04 | 2015-05-07 | 엘지전자 주식회사 | Method and apparatus for transmitting signal in wireless communication system |
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