WO2017194028A1

WO2017194028A1 - Channel state information measurement method and apparatus

Info

Publication number: WO2017194028A1
Application number: PCT/CN2017/084389
Authority: WO
Inventors: 弓宇宏; 鲁照华; 李儒岳; 张淑娟; 王小鹏; 梅猛
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-05-13
Filing date: 2017-05-15
Publication date: 2017-11-16
Also published as: CN107370534A

Abstract

Provided are a channel state information measurement method and apparatus. The method comprises: a first device sending, on a specified reference signal resource, N reference signal ports to a second device according to a specified sending mode, wherein the reference signal ports are used for the second device to measure channel state information between the first device and the second device, and N is a positive integer; and the first device receiving the channel state information fed back by the second device. By means of the present disclosure, the problem in the related art of channel state information measurement is solved.

Description

Method and device for measuring channel state information

Technical field

The present disclosure relates to the field of communications, and in particular to a method and apparatus for measuring channel state information.

Background technique

The cellular network system in the related art mainly uses a low frequency band (for example, 300 MHz to 3 GHz) spectrum. However, as the demand for communication services continues to increase, the conventional low frequency band becomes more and more crowded, which is insufficient to meet the needs of future communication.

The characteristics of high-frequency communication are that it has relatively serious path loss and penetration loss, and its spatial transmission is closely related to the atmosphere. Since the wavelength of the high-frequency signal is extremely short, a large number of small antenna arrays can be applied, so that the beamforming technology can obtain a more accurate beam direction, and the narrow beam technology can improve the coverage of the high-frequency signal and compensate for the transmission loss. A major feature of frequency communication.

Long Term Evolution (LTE) system uses baseband precoding for multi-antenna data multiplexing transmission, which can better support multi-stream data transmission, so it can better support space division multiplexing and MIMO (Mutiple Input Mutiple Output). , multiple input multiple output) transmission scheme, but the disadvantage is that each transmitting antenna needs to correspond to one RF link, and the cost is too high. RF precoding, also known as RF beamforming, saves the number of RF links, but the beamforming weight is only applied to the single stream transmission signal and then transmitted through multiple antennas, thus limiting the system multiplexing capacity. . In the high-frequency communication system, in order to continue to support MIMO multi-stream transmission and effectively control the cost of the radio link, since a large antenna array is adopted, a feasible method in the related art is to adopt a hybrid pre-coding structure, that is, a baseband pre-preparation is adopted at the same time. Coding and radio frequency precoding for multi-antenna data multiplexing transmission. Under the hybrid precoding structure, one RF link corresponds to one antenna array. However, since one RF link can only make one beam at the same time, multiple beams for data multiplexing must come from different RF links, which increases the difficulty of beam training in high frequency communication systems.

For how to quickly and accurately complete the measurement and feedback of channel state information under the above structure in the related art, no effective solution has been found yet.

Summary of the invention

Embodiments of the present disclosure provide a method and apparatus for measuring channel state information to at least solve the problem of low measurement efficiency of channel state information in the related art.

According to an embodiment of the present disclosure, a method for measuring channel state information is provided, where: a first device sends N reference signal ports to a second device according to a specified transmission mode on a specified reference signal resource, where The reference signal port is used by the second device to measure channel state information between the first device and the second device, where the N is a positive integer; the first device receives the channel fed back by the second device status information.

Optionally, the specified sending manner includes a first sending manner or a second sending manner, where the first sending manner is that the first device sends the reference signal port to the second device by using the first type of sending beam. The second sending mode is that the first device sends the reference signal port to the second device by using the second type of sending beam.

Optionally, the first type of transmit beam is a signal that is weighted by the reference signal port by using a first type of precoding and a second type of precoding; and the second type of transmit beam is only the first The second type of precoding weighted signal.

Optionally, the first type of precoding is baseband precoding, and the second type of precoding is radio frequency precoding.

Optionally, the specified sending manner includes repeatedly transmitting the reference signal port of the first device Q times according to the same sending manner, where Q is an integer greater than 1.

Optionally, the Q times of repeated transmissions are respectively located in Q different time unit sets, wherein the time unit set includes at least one time unit.

Optionally, the specified sending manner is a pre-agreed transmission manner of the first device and the second device, or is notified by the network side to at least one of the first device and the second device.

Optionally, the specified reference signal resource includes at least one of the following: a specified frequency domain subcarrier position, a specified time domain time unit,

Optionally, the specified frequency domain subcarrier location includes equally spaced subcarrier locations.

Optionally, at least one of the subcarrier location and the time unit is signaled to the second device by the first device.

Optionally, the first device sends the reference signal port by using a first type of transmit beam in a frequency domain equally spaced subcarrier position.

Optionally, the first device sends the reference signal port by using the same first type of transmit beam in the frequency domain equally spaced subcarrier positions.

Optionally, the subcarrier location has a corresponding relationship with the first type of transmit beam.

Optionally, the corresponding relationship is previously agreed by the first device and the second device, or is notified by the network side to at least one of the first device and the second device.

Optionally, the correspondence includes one of the following:

Each of the M consecutive subcarrier positions in the frequency domain from low to high corresponds to M different first type of transmit beams in a fixed order;

Frequency domain from high to low every M consecutive consecutive subcarrier positions corresponding to M different first type transmission beams in a fixed order;

The M different first type transmission beams correspond to M different first type precoding weights and one same second type precoding weight, and the M is an integer greater than 1.

Optionally, the corresponding relationship includes:

Each N consecutive subcarrier positions in the frequency domain from low to high or from high to low is one subcarrier group, and N subcarriers in each subcarrier group correspond to N different first type transmission beams in a fixed order The N different first type of transmit beams correspond to N different second type precoding weights and the same first type of precoding weights, and the first type of transmit beams on different subcarrier groups correspond to different ones. The first type of precoding weights and corresponding to the same second type of precoding weights in the order of subcarriers within the group.

Optionally, the N subcarriers in each subcarrier group are respectively located in N different time units.

Optionally, the first device sends the reference signal port by using a second type of transmit beam in a frequency domain equally spaced subcarrier position.

Optionally, the first device sends the N reference signal ports by using N different second type of transmit beams on the same time unit.

Optionally, the first device sends the same reference signal port on the equally spaced subcarrier locations in the frequency domain.

Optionally, the N reference signal ports are respectively in one-to-one correspondence with N different sub-carrier positions.

Optionally, the N reference signal ports are respectively sent on N different time units.

Optionally, the N reference signal ports are respectively N reference signal sequences.

Optionally, the reference signal sequence is composed of a pseudo noise sequence or a constant envelope zero autocorrelation sequence.

Optionally, the generating of the reference signal sequence is related to a beam identifier of a transmit beam that sends the reference signal port.

Optionally, the generating of the reference signal sequence is related to a radio frequency link port identifier of a transmit beam that sends the reference signal port.

Optionally, the value of the N includes at least one of the following: a number of radio link ports of the first device, a number of first type of transmit beams, a second type of transmit beams, a first type of precoding weights, and a second The number of class precoding weights and the maximum number of transport layers.

Optionally, the channel state information includes first type channel state information or second type channel state information.

Optionally, one or a group of first type of transmit beam identification information, time-frequency resource information corresponding to the one or a group of second type of transmit beams, and the one or a group of first type of transmit beams. Carrier position information, radio link link information corresponding to the one or a first type of transmit beam, channel quality information corresponding to the one or a set of transmit beams, wherein the set of first type of transmit beams The beams in the are from different RF link ports, one of which represents multiple.

Optionally, the second type of channel state information includes at least one of: one or a group of second type of transmit beam identification information, reference signal port information, and subcarriers corresponding to the one or a group of second type of transmit beams. Position information, subcarrier position information corresponding to the reference signal port, first type of precoding weight information, channel quality based on the one or a group of second type of transmit beams and the first type of precoding weights Information, where a group represents more than one.

According to an embodiment of the present disclosure, there is provided another method for measuring channel state information, comprising: receiving, by a second device, N reference signal ports sent by a first device on a specified reference signal resource; The reference signal port received on the specified reference signal resource measures channel state information between the first device and the second device, and feeds back the channel state information to the first device, where , N is a positive integer.

Optionally, the specified reference signal resource includes at least one of the following: a specified frequency domain subcarrier location, and a specified time domain time unit set.

Optionally, at least one of the subcarrier location and the time unit is obtained by the second device by receiving signaling from the network side.

Optionally, the second device receives the reference signal port in a frequency domain equally spaced subcarrier position in the specified reference signal resource.

Optionally, the second device acquires a sending manner of the reference signal port according to a pre-agreed manner or by receiving signaling from the network side.

Optionally, the sending manner includes a first sending manner or a second sending manner, where the first sending manner is that the first device sends the reference signal port to the second device by using the first type of sending beam, where The second sending mode is that the first device sends the reference signal port to the second device in a second type of transmitting beam.

Optionally, the first type of transmit beam is a signal that is weighted by the reference signal port by using a first type of precoding and a second type of precoding, and the second type of transmit beam is only the first The second type of precoding weighted signal.

Optionally, the sending manner includes repeatedly transmitting the reference signal port of the first device Q times according to the same sending manner, where Q is an integer greater than 1.

Optionally, the specified reference signal resource has a correspondence relationship with a transmit beam that sends the reference signal port, and the corresponding relationship is determined by a predetermined manner or by receiving signaling notification on the network side.

Optionally, the reference signal port has a correspondence relationship with a transmit beam that sends the reference signal port, where the corresponding relationship is determined by a pre-agreed manner or is learned by receiving signaling information of the network side.

Optionally, the specified reference signal resource has a correspondence relationship with a radio frequency link port where the transmit beam of the reference signal port is sent, where the correspondence is determined by a pre-agreed manner or by receiving a network side message. Let the notice know.

Optionally, the reference signal port and the transmit beam that sends the reference signal port are located There is a corresponding relationship between the radio frequency link ports, and the corresponding relationship is determined by a pre-agreed manner or by receiving signaling notifications on the network side.

Optionally, the correspondence includes one of the following:

Transmitting M different first type transmission beams in a fixed order for each M consecutive subcarrier positions in the frequency domain from the lowest to the highest in the specified reference signal resource;

Each of the M consecutive subcarriers in the frequency domain from the highest to the low in the specified reference signal resource corresponds to M different first type of transmit beams;

Optionally, the corresponding relationship includes: each of the N consecutive subcarrier positions in the frequency domain from low to high or from high to low in the specified reference signal resource is one subcarrier group, and each subcarrier group is within each subcarrier group. The N subcarriers correspond to N different first type transmission beams in a fixed order, and the N different first type transmission beams correspond to N different second type precoding weights and the same first type precoding rights The value of the first type of transmit beams on different subcarrier groups corresponds to different first type precoding weights and corresponds to the same second type of precoding weights in the order of subcarriers in the group.

Optionally, the corresponding relationship includes that different equally spaced subcarrier positions in the specified reference signal resource correspond to different second type of transmit beams.

Optionally, the correspondence includes that the N reference signal ports correspond to N different second type of transmit beams on the same time unit in the specified reference signal resource.

Optionally, the second device determines a beam identifier or a beam identifier range of the first type of transmit beam according to a subcarrier position where the reference signal port is located, and when the second device is configured according to the reference signal port In the case where the subcarrier position determines the beam identification range of the first type of transmission beam, the second device further determines the beam identification of the first type of transmission beam by blind detection within the beam identification range.

Optionally, the second device determines, according to the subcarrier location, a radio frequency link port where the first type of transmit beam is located.

Optionally, the second device determines, according to the reference signal port, a beam identifier or a beam identifier range of the second type of transmit beam, and when the second device determines the second type according to the reference signal port In the case of the beam identification range of the transmitting beam, the second device further determines the beam identification of the second type of transmitting beam by blind detection within the beam identification range.

Optionally, the second device determines, according to the reference signal port, a radio frequency link port where the second type of transmit beam is sent.

Optionally, the second device determines, according to the reference signal port, a radio frequency link port that sends the second type of transmit beam, and uses a blind detection manner to determine a beam identifier of a transmit beam corresponding to the radio link port.

Optionally, the value of the N includes at least one of: a maximum number of radio link ports used by the first device to send the reference signal port, a number of first type of transmit beams, a second type of transmit beams, The first type of precoding weights, the second type of precoding weights, and the maximum number of transmission layers.

Optionally, the first type of channel state information includes at least one of: one or a group of first type of transmit beam identification information, time-frequency resource information corresponding to the one or a group of first type of transmit beams, and the Subcarrier position information of one or a group of first type of transmission beams, radio link port information corresponding to the one or a group of first type of transmission beams, and channel quality information corresponding to the one or a group of transmission beams, The beams in the set of first type of transmit beams are respectively from different radio link ports, and one set represents multiple.

Optionally, the second type of channel state information includes at least one of: one or a group of second type of transmit beam identification information, reference signal port information, and a time frequency corresponding to the one or a group of second type of transmit beams. Resource information, the subcarrier corresponding to the one or a second type of second type of transmit beam Location information, subcarrier position information corresponding to the reference signal port, first type of precoding weight information, channel quality information based on the one or a group of second type of transmit beams and the first type of precoding weights, The beams in the set of second type of transmit beams are respectively from different radio link ports, and one set represents multiple.

According to another embodiment of the present disclosure, there is provided a measurement apparatus for channel state information, which is provided in a first device, comprising: a sending module, configured to set N reference signal ports in a specified reference signal according to a specified transmission mode. Transmitting to the second device, wherein the reference signal port is used by the second device to measure channel state information between the first device and the second device, where N is a positive integer; and the receiving module is configured to Receiving channel state information fed back by the second device.

Optionally, the specified reference signal resource includes at least one of the following: a specified frequency domain subcarrier location, and a specified time domain time unit.

Optionally, the first device sends the reference signal port in a manner of at least one of the following: sending the reference signal port in a second type of transmit beam at a sub-carrier position of the frequency domain at equal intervals, at the same time The N reference signal ports are transmitted on the unit by N different second type transmission beams respectively.

According to another embodiment of the present disclosure, there is provided another apparatus for measuring channel state information, provided in a second device, comprising: a receiving module configured to receive N references sent by the first device on a specified reference signal resource a signal port, configured to: measure channel state information between the first device and the second device according to the reference signal port received on the specified reference signal resource, and set the channel state information Feedback to the first device, wherein the N is a positive integer.

Optionally, the specified reference signal resource has a correspondence relationship with a transmit beam that sends the reference signal port, where the corresponding relationship is determined by a predetermined manner or is received by signaling on the receiving network side; or Corresponding relationship between the reference signal port and the transmit beam that sends the reference signal port, where the correspondence is determined by a pre-agreed manner or by receiving signaling notification on the network side; or the designated reference signal Corresponding relationship between the resource and the radio frequency link port where the transmit beam of the reference signal port is located, where the correspondence is determined by a pre-agreed manner or by signaling of the receiving network side; or the reference signal The port has a corresponding relationship with the radio link port where the transmit beam of the reference signal port is located, and the correspondence is determined by a pre-agreed manner or by receiving signaling notification on the network side.

Optionally, the value of the N includes at least one of: a maximum number of radio link ports used by the first device to send the reference signal port, a first type of transmit beam, and a second type of The number of transmitted beams, the number of first type of precoding weights, the number of second type of precoding weights, and the maximum number of transmission layers.

According to still another embodiment of the present disclosure, a storage medium is also provided. The storage medium is arranged to store program code for performing the following steps:

Transmitting the N reference signal ports to the second device according to the specified sending manner, where the reference signal port is used by the second device to measure the first device and the second device Channel state information, the N being a positive integer;

Receiving channel state information fed back by the second device.

Through the disclosure, the beam training process in the high-frequency communication system can be completed quickly and efficiently, and the receiving side can pass the frequency domain of the received reference signal port by binding the reference signal port of the transmitting beam to the transmitting beam. The position or the received reference signal port can determine at least one of the following: a received transmit beam or a transmit beam range, and a radio link port from which the transmit beam is derived, because the blind detection complexity of the transmit beam on the receive side is reduced, and The receiving side can distinguish the transmitting beams from different radio frequency link ports, so as to feed back the beam and channel quality information used for multi-antenna data transmission multiplexing to the transmitting side, which solves the problem of low measurement efficiency of channel state information in the related art. .

DRAWINGS

The drawings described herein are provided to provide a further understanding of the present disclosure, which is a part of the present disclosure, and the description of the present disclosure and the description thereof are not intended to limit the disclosure. In the drawing:

1 is a flowchart of a method of measuring channel state information according to an embodiment of the present disclosure;

2 is a flowchart of another method of measuring channel state information according to an embodiment of the present disclosure;

3 is a structural block of a measurement apparatus for channel state information according to an embodiment of the present disclosure. Figure

4 is a structural block diagram of another apparatus for measuring channel state information according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a hybrid precoding structure at a transmitting end according to an embodiment of the present disclosure; FIG.

6 is a schematic diagram showing a fixed mapping relationship between a transmit beam and a subcarrier position of a reference signal in an embodiment of the present disclosure;

7 is a schematic diagram of mapping relationships between transmit beams and subcarrier positions from different radio frequency links in an embodiment of the present disclosure;

8 is a schematic diagram of multiple transmit beams in a time domain corresponding to different subcarrier positions in a frequency domain according to an embodiment of the present disclosure;

9 is a schematic diagram of a fixed mapping relationship between a frequency domain subcarrier position and different beams from different links in an embodiment of the present disclosure;

10 is a schematic diagram of a fixed mapping relationship between a reference signal port and a radio frequency link in an embodiment of the present disclosure;

11 is a schematic diagram of a fixed mapping relationship between a reference signal port and a frequency domain subcarrier position in an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of a reference signal transmitted by different base stations occupying different frequency domain subcarrier positions in the embodiment of the present disclosure.

detailed description

The present disclosure will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second", and the like in the specification and claims of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

Example 1

In this embodiment, a method for measuring channel state information is provided. FIG. 1 is a flowchart of a method for measuring channel state information according to an embodiment of the present disclosure. As shown in FIG. 1, the process includes the following steps:

Step S102: The first device sends the N reference signal ports to the second device according to the specified sending mode, where the reference signal port is used by the second device to measure between the first device and the second device. Channel state information, N is a positive integer;

Step S104: The first device receives channel state information that is fed back by the second device.

The N reference signal ports are used by the second device to measure channel state information between the first device and the second device, where N is a positive integer.

Through the above steps, the beam training process in the high-frequency communication system can be completed quickly and efficiently by adopting at least one of the following methods: binding the reference signal port of the transmit beam to the transmit beam, and the resource for transmitting the reference signal is bound to the transmit beam. So that the receiving side can determine at least one of the following: a received transmit beam or a transmit beam range by using at least one of a frequency domain position, a time unit in which the received reference signal port is located, or a received reference signal port; Transmitting the beam from the radio link port, thereby reducing the blind detection complexity of the transmit beam on the receiving side, and enabling the receiving side to distinguish the transmit beams from different radio link ports, so as to be used for multi-antenna data transmission. The used beam and channel quality information are fed back to the transmitting side, which solves the problem of low measurement efficiency of channel state information in the related art.

It should be noted that the “time unit” mentioned in the present disclosure includes at least one time domain minimum time unit, for example, the time unit may be one symbol or one subframe composed of a fixed number of symbols, etc.; A "set of time units" as mentioned in the disclosure includes at least one of said time units, wherein said at least one of said time units may be a plurality of consecutive time units or a non-contiguous time unit.

Optionally, the execution body of the foregoing step may be a base station or the like, but is not limited thereto. The present embodiment is also a method for feeding back channel state information. The downlink transmitting end (base station side) sends the reference signal port (including: reference signal) to the terminal side (second device), and the terminal side re-feedback signal. The channel status information is sent to the base station side.

Another method for measuring channel state information is also provided in the embodiment, and is applied to the receiving end or the terminal side. FIG. 2 is a flowchart of another method for measuring channel state information according to an embodiment of the present disclosure. As shown in FIG. 2, the process includes the following steps:

Step S202, the second device receives N reference signal ports sent by the first device on the specified reference signal resource.

Step S204: The second device measures channel state information between the first device and the second device according to the reference signal port received on the specified reference signal resource, and feeds back the channel state information to the first device, where A positive integer.

In the present embodiment, the "reference signal" and the "reference signal port" may be equivalent to each other; the "RF link" and the "RF link port" may be equivalent to each other.

In an optional implementation manner of this embodiment, the first device is a transmitting end of the reference signal, and the second device is a receiving end of the reference signal, for example, in a downlink transmission of the cellular network system, where the first device is a base station, corresponding to The second device is a terminal; in the uplink transmission of the cellular network system, the first device is a terminal, and the second device is a base station; in a communication environment between the device and the device (D2D, Device to Device), the first device For the terminal 1, the corresponding second device is the terminal 2.

In an optional implementation manner of this embodiment, the network side signaling is usually sent by the base station to the terminal.

The first type of transmission beam means that the first device sends the reference signal to the second device after the first type of precoding and the second type of precoding; the second type of transmission beam means that the first device passes the reference signal only to the second type. The precoding is sent to the second device. The first type of precoding is baseband precoding or digital precoding, and the second type of precoding is radio frequency precoding or analog precoding.

Optionally, the N reference signal ports are respectively N reference signal sequences, wherein the reference signal sequence is composed of a pseudo noise sequence (Pseudo-noise Sequence, PN sequence for short) or a Zadoff-Chu sequence (referred to as a ZC sequence). The generation of the signal sequence is related to the beam identification of the first type of transmit beam or the second type of transmit beam. Among them, the ZC sequence is a typical constant envelope zero. Constant Amplitude Zero Auto Correlation (CAZAC) sequence.

Optionally, the generation of the reference signal is also related to the radio link port identifier from which the first type of transmit beam or the second type of transmit beam is derived.

Optionally, the value of N is equal to the number of radio links on the transmitting end, or the number of transmitting beams in the first type, or the number of transmitting beams in the second type, or the number of precoding weights in the first type, or the number of precoding weights in the second type. , or the maximum number of allowed transmission layers for multi-antenna data multiplexing in a communication system.

This embodiment includes the following two implementation manners, specifically:

method one:

The N reference signal ports of the first device are sent to the second device according to the first type of transmit beam on the specified reference signal resource; and the second device feeds back the first type of channel state information to the first device.

The specified reference signal resource includes at least one of the following: a specified frequency domain subcarrier position, a specified set of time units, and the first device transmits the reference signal according to the first type of transmit beam on the designated reference signal resource. The at least one of the subcarrier position and the time unit set is pre-approved by the first device and the second device or is signaled to the second device by the first device. It is worth noting that the specified subcarrier position also includes all subcarrier positions in the frequency domain.

Optionally, the N reference signal ports of the first device are repeatedly sent Q times on the specified set of time units according to the first device transmit beam, where Q is an integer greater than 1. This is mainly because the second device also needs to receive the reference signal port based on the beam. In this case, under different receiving beams, the first device repeatedly transmits the reference signal port in the same manner, that is, usually, How many receive beams the two devices have requires how many times the first device repeatedly transmits the reference signal port in the same manner. The receiving beam here means that the receiving device (second device) performs weighting processing on the received channel, and each weighting value corresponds to one receiving beam.

Optionally, the first device sends the reference signal according to the same first type of transmit beam in the frequency domain equally spaced subcarrier positions. The subcarrier position has a fixed correspondence with the first type of the transmit signal of the reference signal port, and the corresponding relationship is pre-agreed by the first device and the second device, or is notified to the second device by the first device by signaling. .

Optionally, the frequency domain ranges from low to high or high to low, and each M consecutive subcarrier positions corresponds to M different first type beams in a fixed order, and M first type beams correspond to M different first classes. The precoding weight and an identical second type of precoding weight, where M is an integer greater than one. The correspondence between the reference signal resource and the first type of beam is more suitable for the case of supporting only single layer data transmission.

Or optionally, the frequency domain is from low to high or from high to low, and each N consecutive subcarrier positions is one subcarrier group, and the N subcarriers in each subcarrier group correspond to N different first classes in a fixed order. The beam, N different first type beams correspond to N different second type precodings and one same first type precoding, and the first type of beams on different subcarrier groups correspond to different first type precodings. The first type of transmit beams on the N subcarriers in each subcarrier group are respectively sent on N different time units. The correspondence between the reference signal resource and the first type of beam is more suitable for multi-antenna data multi-layer multiplexing transmission.

Optionally, the specified reference signal resource has a fixed correspondence with the first type of transmit beam that sends the reference signal port, and the corresponding relationship is pre-agreed by the first device and the second device or by the first The device notifies the second device by signaling.

Optionally, the specified reference signal resource has a fixed correspondence with the radio link port where the first type of the transmit beam of the reference signal port is located, where the corresponding relationship is performed by the first device and the second device. Pre-agreed or signaled to the second device by the first device.

Optionally, the specified reference signal port has a fixed correspondence with the first type of transmit beam that sends the reference signal port, where the correspondence is pre-determined by the first device and the second device or by The first device notifies the second device by signaling.

Optionally, the specified reference signal port has a fixed correspondence with the radio link port where the first type of the transmit beam of the reference signal port is located, where the corresponding relationship is performed by the first device and the second device. Pre-agreed or signaled to the second device by the first device.

The second device receives the reference signal port on the designated reference signal resource, based on the designation Determining channel state information of the reference signal port received on the reference signal resource, specifically including determining a beam identifier or a beam identifier range of the first type of transmit beam of the reference signal according to the position of the subcarrier where the received reference signal is located, for the latter case The second device further determines, by means of the blind detection, a beam identifier of the first type of transmission beam that transmits the reference signal from the beam identification range. Preferably, the second device may further determine the first type of transmission beam that transmits the reference signal from the subcarrier position. The RF link port is located, and the second device further feeds back the channel state information to the first device, where the channel state information includes at least one of: one or a set of first type of transmit beam identification information, one or a group of first The subcarrier position information of the class transmission beam, the radio link port information corresponding to one or a group of the first type of transmission beams, and the channel quality information corresponding to one or a group of transmission beams, wherein a group of the first type of transmission beams The beams are from different RF link ports.

Method 2:

The N reference signal ports of the first device are sent to the second device according to the second type of transmit beam on the specified reference signal resource; and the second device feeds back the second type of channel state information to the first device.

The specified reference signal resource includes at least one of the following: a specified frequency domain subcarrier position, a specified set of time units, and the first device transmits the reference signal according to the first type of transmit beam on the designated reference signal resource. The at least one of the subcarrier position and the time unit set is pre-approved by the first device and the second device or is signaled to the second device by the first device. Optionally, the specified subcarrier location also includes all subcarrier locations in the frequency domain.

Optionally, the N reference signal ports of the first device are repeatedly sent Q times on the specified set of time units according to the second type of transmit beams, where Q is an integer greater than 1. This is mainly because the second device also needs to receive the reference signal port based on the beam. In this case, under different receiving beams, the first device repeatedly transmits the reference signal port in the same manner, that is, usually, How many receive beams the two devices have requires how many times the first device repeatedly transmits the reference signal port in the same manner. The receiving beam here means that the receiving device (second device) performs weighting processing on the received channel, and each weighting value corresponds to one receiving beam.

The first device separately transmits the N reference signal ports by using N different second type of transmit beams on the same time unit.

Or the first device sends the N reference signal ports by using a second type of transmit beam at the equally spaced subcarrier positions in the frequency domain, where the first device sends the same reference in the frequency domain equally spaced subcarrier positions. Signal port. Preferably, the N reference signal ports are respectively in one-to-one correspondence with N different sub-carrier positions.

The second device receives N reference signal ports, and estimates channel state information based on the reference signal port, specifically, determining, according to the received reference signal port, a beam identifier or a beam identifier range of the second type of transmit beam that sends the reference signal port, where The second device further determines, by means of the blind detection, the beam identifier of the first type of transmission beam that transmits the reference signal from the beam identification range. Optionally, the second device may further determine to send the second according to the received reference signal port. The RF link port where the class transmission beam is located. Further, the second device feeds back channel state information to the first device, where the channel state information includes at least one of: one or a group The second type of transmit beam table information, the first type of precoding weight information, the reference signal port information corresponding to one or a group of second type of transmit beams, based on one or a set of second type of transmit beams, and the first type of precoding rights Channel quality information under the value, wherein the hungry beams in a set of second type of transmit beams are from different radio link ports, respectively.

Or the N reference signal ports respectively correspond to different subcarrier positions in a fixed order in the frequency domain. For example, the second device sends the same reference signal port at equally spaced positions, and the receiving end can be based on the subcarrier position of the received reference signal. A radio frequency link port from which the second type of beam from which the reference signal is transmitted may be determined.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, portions of the technical solutions of the present disclosure that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (eg, ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present disclosure.

Example 2

In the embodiment, a channel state information measuring device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a structural block diagram of a device for measuring channel state information according to an embodiment of the present disclosure, which may be disposed at a transmitting end and a base station side. As shown in FIG. 3, the device includes:

The sending module 30 is configured to send the N reference signal ports of the first device to the second device according to the first type of transmit beam or the second type of transmit beam on the specified reference signal resource;

The receiving module 32 is configured to receive the first class of the second device according to the first type of transmitting beam feedback. Channel state information or second type channel state information according to the second type of transmit beam feedback; wherein the N reference signal ports are used by the second device to measure channel state information between the first device and the second device, where N is a positive integer .

FIG. 4 is a structural block diagram of another apparatus for measuring channel state information according to an embodiment of the present disclosure, which may be disposed on a receiving end and a terminal side. As shown in FIG. 4, the apparatus includes:

The receiving module 40 is configured to receive N reference signal ports that are sent by the first device according to the first type of transmit beam or the second type of transmit beam;

The processing module 42 is configured to measure channel state information between the first device and the second device according to the N reference signal ports, and feed back the channel state information to the first device, where N is a positive integer.

In this embodiment, the first device may be the transmitting end of the reference signal, and the second device may be the receiving end of the reference signal, for example, in the downlink transmission of the cellular network system, the first device is a base station, and correspondingly the second device In the uplink transmission of the cellular network system, the first device is a terminal, and the second device is a base station; in the communication environment between the device and the device (D2D, Device to Device), both are terminals, One device is the terminal 1, and correspondingly the second device is the terminal 2. The above is merely an example, and the application of the present disclosure is generally not limited thereto.

Optionally, the first type of the transmit beam is that the first device sends the reference signal to the second device after the first type of precoding and the second type of precoding; the second type of the transmit beam is that the first device uses the reference signal only After the second type of precoding, it is sent to the second device. The first type of precoding is baseband precoding or digital precoding, and the second type of precoding is radio frequency precoding or analog precoding.

Optionally, the N reference signal ports are respectively N reference signal sequences, wherein the reference signal sequence is composed of a PN sequence or a ZC sequence, and the generation of the reference signal sequence is related to the beam identification of the first type of transmission beam or the second type of transmission beam. . Among them, the ZC sequence is a typical Constant Amplitude Zero Auto Correlation (CAZAC) sequence.

Optionally, the generation of the reference signal is also derived from the first type of transmit beam or the second type of transmit beam. The RF link port identifier is related.

Optionally, the value of N is equal to the number of radio links on the transmitting end, or the number of transmitting beams of the first type, or the number of transmitting beams of the second type, or the number of precoding weights of the first type, or the second type of precoding weights. The number, or the maximum number of allowed transmission layers for multi-antenna data multiplexing in a communication system.

The measurement of the channel state information by the transmitting end and the receiving end in this embodiment may include the following two implementation manners, specifically:

method one:

The specified reference signal resource includes at least one of the following: a specified frequency domain subcarrier position, a specified time unit set, and the first device transmits the reference signal according to the first type of transmit beam on the designated designated reference signal resource. The at least one of the subcarrier position and the time unit set is pre-approved by the first device and the second device or is signaled to the second device by the first device. It is worth noting that the specified subcarrier position also includes all subcarrier positions in the frequency domain.

Optionally, the frequency domain is fixed from low to high or high to low every M consecutive subcarrier positions. The order corresponds to M different first type beams, and the M first type beams correspond to M different first type precoding weights and one same second type precoding weight, where M is an integer greater than 1. The correspondence between the reference signal resource and the first type of beam is more suitable for the case of supporting only single layer data transmission.

Or, each of the N consecutive subcarrier positions in the frequency domain from low to high or from high to low is one subcarrier group, and the N subcarriers in each subcarrier group correspond to N different first type beams in a fixed order, N The different first type of beams correspond to N different second type precodings and one and the same first type of precoding, and the first type of beams on different subcarrier groups correspond to different first type precodings. The first type of transmit beams on the N subcarriers in each subcarrier group are respectively sent on N different time units. The correspondence between the reference signal resource and the first type of beam is more suitable for multi-antenna data multi-layer multiplexing transmission.

The second device receives the reference signal port on the designated reference signal resource, and estimates channel state information based on the reference signal port received on the designated reference signal resource, specifically including the root Determining, according to the subcarrier position of the received reference signal, a beam identifier or a beam identification range of the first type of transmit beam of the reference signal, and in the latter case, the second device further determines the transmit reference signal from the beam identification range by means of blind detection. The beam identification of the first type of transmit beam, preferably, the second device may further determine, from the subcarrier position, the radio frequency link port where the first type of transmit beam of the reference signal is transmitted, and further the second device feeds back the channel state information to a first device, wherein the channel state information includes at least one of: one or a set of first type of transmit beam identification information, one or a set of first type of transmit beam subcarrier location information, one or a set of first type of transmit beams Corresponding radio link port information, channel quality information corresponding to one or a group of transmit beams, wherein beams in a group of first type of transmit beams are respectively from different radio link ports.

Method 2:

The first device sends the N different transmit beams in the same time unit Send the N reference signal ports.

The second device receives N reference signal ports, and estimates channel state information based on the reference signal port, specifically, determining, according to the received reference signal port, a beam identifier or a beam identifier range of the second type of transmit beam that sends the reference signal port, where The second device further determines, by means of the blind detection, the beam identifier of the first type of transmission beam that transmits the reference signal from the beam identification range. Optionally, the second device may further determine to send the second according to the received reference signal port. The RF link port where the class transmission beam is located. Further, the second device feeds back channel state information to the first device, where the channel state information includes at least one of: one or a group of second type of transmit beam table information, a first type of precoding weight information, one or a group Second type The reference signal port information corresponding to the transmit beam, the channel quality information based on one or a group of the second type of transmit beam and the first type of precoding weight, wherein the hungry beams in the second set of transmit beams are respectively from different radio frequencies Link port.

Optionally, the N reference signal ports respectively correspond to different subcarrier positions in a fixed sequence in the frequency domain. For example, the second device sends the same reference signal port at equally spaced positions, and the receiving end may be according to the sub-received reference signal. The carrier position determines the RF link port from which the second type of beam from which the reference signal is transmitted.

Optionally, the execution body including the specific operation in this embodiment may be a module or a unit disposed in the first device or the second device, or a module or a unit disposed on the control end of the first device or the second device.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination. The forms are located in different processors.

Example 3

This embodiment is an optional embodiment, and includes a plurality of specific embodiments for specifically explaining and explaining the foregoing embodiments.

Specific embodiment 1

FIG. 5 is a schematic diagram of a hybrid precoding structure at a transmitting end according to an embodiment of the present disclosure, as shown in FIG. 5, where N _s is a number of transmission streams/layers, N _RF is a number of radio frequency links, and N _t is per Number of transmit antennas corresponding to a radio frequency link (Radio Frequency Chain, abbreviated as RF link). Baseband precoding As shown in Fig. 5, radio frequency precoding, also called radio frequency beamforming, only refers to phase adjustment in the RF phase, that is, beamforming of the phase.

One of the characteristics of hybrid precoding is that baseband precoding is performed in the baseband domain, so different baseband precoding can be performed on different subcarriers, and radio frequency precoding is performed in the radio frequency domain, so it cannot be implemented. Precoding is performed on subcarriers, so only one RF beam can be played on one RF link at a time in the RF phase.

The reference signal at the transmitting end adopts the above-mentioned hybrid precoding structure, and is subjected to baseband precoding, and then subjected to radio frequency precoding to form a beam of mixed precoding to be transmitted. Assume that the number of radio link N _RF at the transmitting end is equal to 4, wherein there are 4 code words pre-coded by baseband, and 2 weights of radio frequency beam shaping, so the number of beams under hybrid precoding formed on each radio link It is 8.

In the following, the sender is the base station and the receiver is the terminal, which is further detailed.

The base station transmits the same beam in the frequency domain equally spaced subcarrier positions, wherein the two subcarriers transmitting the same beam have an interval of four. FIG. 6 is a fixed mapping of the transmit beam and the subcarrier position of the reference signal in the embodiment of the present disclosure. Schematic diagram 1 of the relationship, as shown in FIG. 6, assuming that the beam identifiers of the eight beams are 0 to 7, respectively, on the beam training time unit t, the reference signal is transmitted on the subcarrier 4k according to the beam 0, and the subcarrier 4k+1 It is transmitted in accordance with beam 1, transmitted on beam 2 in subcarrier 4k+2, and transmitted on beam 3 in subcarrier 4k+3.

At this time, FIG. 7 is a schematic diagram of a mapping relationship between a transmit beam and a subcarrier position of different radio frequency links in the embodiment of the present disclosure, corresponding to the subcarrier position allocation of different beams in the hybrid precoding architecture at the transmitting end, as shown in the figure. As shown in Figure 7, beam 0 of each link is simultaneously transmitted at subcarrier position 4k, beam 1 of each link is simultaneously transmitted at subcarrier position 4k+1, and beam 2 of each link is at subcarrier position 4k The +2 is transmitted simultaneously, and the beam 3 of each link is simultaneously transmitted at the subcarrier position 4k+3.

Since there are a total of 8 transmit beams under each radio link of the transmitting end, all the channel quality information measurement in all the beams cannot be completed by using only one beam training time unit. FIG. 8 is a case where different subcarrier positions in the frequency domain are corresponding in the embodiment of the present disclosure. A schematic diagram of multiple transmit beams in a domain, as shown in FIG. 8, on the beam training time unit t+k, the transmit end is in subcarrier 4k, subcarrier 4k+1, subcarrier 4k+2 in the same manner as described above. Beams 4, 5, 6, and 7 are transmitted on subcarriers 4k+3, respectively.

The receiving end determines the beam identifier of the reference signal according to the position of the subcarrier that receives the reference signal. For example, the beam identifier of the reference signal received at the subcarrier position 4k may only be 0 and 4, that is, the subcarrier position 4k is received. The beam identification range of the reference signal is {0, 4}. Since the generation of the reference signal is usually related to the beam identification, the receiving end can utilize the relevant The method performs blind detection to determine whether the beam identifier of the reference signal received at the subcarrier position 4k at a certain time is 0 or 4, and similarly, the transmission beam identifier of the reference signal is also determined in the other manner at the other subcarrier positions. Further, if the generation of the reference signal is further related to the radio frequency link port, the receiving end may further determine the radio frequency link port corresponding to the reference signal transmission beam according to the received reference signal. Then, the receiving end feeds back the obtained channel state information to the transmitting end, where the channel state information includes at least one of the following information: one or a group of transmitting beam identification information, one or a group of transmitting beam subcarrier position related information, one or The radio frequency link port information corresponding to a set of transmit beams and the channel quality information corresponding to one or a set of transmit beams, wherein the beams in a set of transmit beams are respectively from different radio link ports.

Specific embodiment 2

The reference signal of the transmitting end adopts the above hybrid precoding structure, and is pre-coded by baseband, and then subjected to radio frequency precoding to form a beam of mixed precoding to be transmitted. Assume that the number of radio links N _RF at the transmitting end is equal to 4, wherein there are two codewords for baseband precoding, and two for the beam shaping weights, so the number of beams under hybrid precoding formed on each radio link is determined. It is 4.

The base station transmits the same beam at the equally spaced subcarrier positions in the frequency domain, wherein the two subcarriers transmitting the same beam have an interval of 16, and FIG. 9 is a frequency domain subcarrier position and different beams from different links in the embodiment of the present disclosure. A schematic diagram of a fixed mapping relationship, as shown in FIG. 9, assuming that the beam identifiers of the four beams on each link are 0 to 3, respectively, and the reference signals are respectively received from the radio frequency on the subcarriers 16k to 16k+3. The beam 0 of the links 0 to 3 is transmitted, and is transmitted according to the beam 1 from the radio frequency link 0 to 3 on the subcarriers 16k+4 to 16k+7, and the radio frequency is received on the subcarriers 16k+8 to 16k+11 respectively. The beam 2 of the links 0 to 3 is transmitted, and is transmitted on the subcarriers 16k+12 to 16k+1515 in accordance with the beam 3 from the radiolinks 0 to 3, respectively. That is, the beam from radio link 0 is fixedly transmitted on the subcarrier position 16k+4i (i=0, 1, 2, 3), and the beam from the radio link 1 is fixedly at the subcarrier position 16k+4i+ 1 is transmitted, the beam from the radio link 2 is fixedly transmitted on the subcarrier position 16k+4i+2, and the beam from the radio link 3 It is fixedly transmitted on the subcarrier position 16k+4i+3.

The receiving end determines the beam identifier of the reference signal and the radio frequency link port from which the beam of the reference signal is sent according to the position of the subcarrier that receives the reference signal, and then the receiving end feeds back the obtained channel state information to the transmitting end, where the channel The status information includes at least one of the following information: one or a set of transmit beam identification information, subcarrier position information of one or a set of transmit beams, radio link port information corresponding to one or a set of transmit beams, one or a set of transmit beams The corresponding channel quality information, wherein the beams in a group of transmission beams are respectively from different radio frequency link ports.

Specific embodiment 3

The data transmission at the transmitting end adopts a hybrid precoding structure as shown in FIG. 5, but the transmission of the reference signal is transmitted only by radio frequency precoding. It can also be understood that the reference signal is subjected to fixed baseband precoding, for example, baseband precoding is a unit matrix. Assume that the number of radio links N _RF at the transmitting end is equal to 4, wherein there are two codewords for baseband precoding, and two for the beam shaping weights, so the number of beams under hybrid precoding formed on each radio link is determined. It is 4. It is assumed that the beam identification of the beam on each radio link is 0-3.

The transmitting end sends N reference signal ports, where the value of N is equal to the value of the number of radio links N _RF , and the N reference signal ports respectively correspond to the N _RF radio links in a fixed order, that is, the N reference signal ports are in a fixed order. are emitted from the N _RF radio frequency links, FIG. 10 is a schematic view of the present disclosure implement a fixed mapping between the embodiments having reference signal port and radio frequency link; FIG., each time the beam training unit 10 shown in FIG. The transmitting end sends at most N _RF beams at the same time. The N _RF beams are respectively from different RF link ports, and the N _RF beams are respectively in one-to-one correspondence with the N reference signal ports. Since each radio link has 4 beams, the transmitting end needs at least 4 beam training time units to transmit N reference signals one by one for all beams in each radio link.

Wherein, the N reference signal ports are respectively N different reference signal sequences, wherein reference The signal sequence consists of a PN sequence or a ZC sequence, and the generation of the reference signal is related to the radio link port. Preferably, the generation of the reference signal is related to the beam identification of the beam from which the reference signal is transmitted.

The receiving end determines, according to the port that receives the reference signal, a radio frequency link port from which the beam from which the reference signal is transmitted is derived. The transmitting end may further determine, according to a time unit that receives the reference signal, a beam identifier of the beam that sends the reference signal, or if the generation of the reference signal is related to the beam identifier, the receiving end may also determine, by using the received reference signal port, to send the reference. The identification range of the beam of the signal, and then the related method is used for blind detection to determine the beam identifier of the beam transmitting the reference signal. Then, the receiving end feeds back the obtained channel state information to the transmitting end, where the channel state information includes at least one of the following information: one or a set of transmit beam identification information, a baseband precoding weight value related information used for the recommended data transmission, and a Or reference signal port related information corresponding to a set of transmit beams, based on one or a set of transmit beams and channel quality information under baseband precoding weights, wherein the beams in a set of transmit beams are respectively from different radio link ports.

Specific embodiment 4

The data transmission at the transmitting end adopts a hybrid precoding structure as shown in FIG. 5, but the transmission of the reference signal is transmitted only by radio frequency precoding, or it can be understood that the reference signal is subjected to fixed baseband precoding, for example, baseband precoding is a unit matrix. Assume that the number of radio links N _RF at the transmitting end is equal to 4, wherein there are two codewords for baseband precoding, and two for the beam shaping weights, so the number of beams under hybrid precoding formed on each radio link is determined. It is 4. It is assumed that the beam identification of the beam on each radio link is 0-3.

The transmitting end sends N reference signal ports, where the value of N is equal to the value of the number of radio links N _RF , and the N reference signal ports respectively correspond to the N _RF radio links in a fixed order, that is, the N reference signal ports are fixed. The order is sent from the N _RF RF links. On each beam training time unit, the transmitting end sends at most N _RF beams at the same time. The N _RF beams are respectively from different RF link ports, and the N _RF beams are respectively in one-to-one correspondence with the N reference signal ports. Since each radio link has 4 beams, the transmitting end needs at least 4 beam training time units to transmit N reference signals one by one for all beams in each radio link.

The N reference signal ports respectively have N reference signal sequences, and the N reference signal ports respectively occupy different subcarrier positions, and each reference signal port occupies different subcarrier positions in the frequency domain at equal intervals, and is equally spaced. The method refers to sending the same reference signal port every fixed number of subcarriers. FIG. 11 is a schematic diagram showing a fixed mapping relationship between a reference signal port and a frequency domain subcarrier position in the embodiment of the present disclosure, as shown in FIG. Assuming that there are four reference signal ports, the four reference signal ports are respectively transmitted on subcarriers 4k to 4k+3. Preferably, the generation of the reference signal is related to the beam identification of the beam from which the reference signal is transmitted.

The receiving end receives the reference signal port, determines the radio frequency link port from which the beam of the reference signal port is sent according to the subcarrier position of the receiving reference signal port, and performs blind detection in an relevant manner to determine the beam identifier of the beam transmitting the reference signal port. Then, the receiving end feeds back the obtained channel state information to the transmitting end, where the channel state information includes at least one of the following information: one or a set of transmit beam identification information, a baseband precoding weight value related information used for the recommended data transmission, and a Or reference signal port related information corresponding to a set of transmit beams, based on one or a set of transmit beams and channel quality information under baseband precoding weights, wherein the beams in a set of transmit beams are respectively from different radio link ports.

Specific embodiment 5

The data transmission at the transmitting end adopts a hybrid precoding structure as shown in FIG. 5, but the transmission of the reference signal is transmitted only by radio frequency precoding, and the baseband precoding through which the reference signal passes is also understood to be an identity matrix. Assume that the number of radio links N _RF at the transmitting end is equal to 4, wherein there are two codewords for baseband precoding, and two for the beam shaping weights, so the number of beams under hybrid precoding formed on each radio link is determined. It is 4. Assume that the beam identification of the beam on the radio link j is 4j+q, where j is [0, 3], q is [0, 3], and j and q are integers.

The transmitting end sends N reference signal ports, where the value of N is equal to the value of the number of radio links N _RF * N _t , and the N reference signal ports are respectively in one-to-one correspondence with the beams on the N _RF radio links in a fixed order.

The N reference signal ports are respectively N different reference signal sequences, wherein the reference signal sequence is composed of a PN sequence or a ZC sequence, and the reference signal is generated and transmitted. The beam identification of the beam is related.

The receiving end determines the beam identifier of the beam that sends the reference signal according to the port that receives the reference signal, and determines the radio frequency link from the beam by using the identifier, and then the receiving end feeds back the obtained channel state information to the transmitting end, where the channel state The information includes at least one of the following information: one or a set of transmit beam identification information, baseband precoding weight related information used for recommended data transmission, reference signal port related information corresponding to one or a set of transmit beams, based on one or a group Channel quality information under transmit beam and baseband precoding weights, where the beams in a set of transmit beams are from different RF link ports, respectively.

Specific embodiment 6

The base station transmits the reference signal according to the first type of transmission beam or the second type of transmission beam at the designated subcarrier position. The subcarrier position is pre-agreed by the base station and the terminal or notified to the terminal by the base station by signaling.

With the method of the embodiment, different base stations occupy different sub-carrier positions in the frequency domain and simultaneously transmit reference signals to the UE according to the beam, thereby avoiding interference problems between each other, and effectively saving multiple base stations to serve the same UE. The next beam training time. FIG. 12 is a schematic diagram of different base stations occupying different frequency domain subcarrier position transmission reference signals according to an embodiment of the present disclosure. As shown in FIG. 12, both base station 1 and base station 2 can provide services to the UE, and base station 1 and base station 2 respectively provide services. The subcarrier positions 2k and 2k+1 occupying the frequency transmit a reference signal to the UE.

For the manner in which the base station 1 or the base station 2 sends the reference signal to the UE and the feedback manner, reference may be made to the methods in the foregoing specific embodiments 1 to 4 of the present disclosure.

Example 4

Embodiments of the present disclosure also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, the N reference signal ports of the first device are sent to the second device according to the first type of transmit beam or the second type of transmit beam on the specified reference signal resource;

S2, receiving, by the second device, the first type of channel state information according to the first type of transmit beam feedback or the second type of channel state information according to the second type of transmit beam feedback;

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, the N reference signal ports of the first device according to the first type of transmit beam or the second type of transmit beam at the specified reference signal resource. Sent to the second device;

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, the first type channel state information that is received by the second device according to the first type of transmit beam feedback or the second type of transmit beam feedback. The second type of channel state information; wherein, the N reference signal ports are used by the second device to measure channel state information between the first device and the second device, where N is a positive integer.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

The above is only a preferred embodiment of the present disclosure, and is not intended to limit the disclosure, and various changes and modifications may be made to the present disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present disclosure are intended to be included within the scope of the present disclosure.

Industrial applicability:

The present disclosure relates to the field of communications, and provides a method and apparatus for measuring channel state information, by binding a reference signal port of a transmit beam to a transmit beam, so that the receive side can pass the frequency domain of the received reference signal port. The position or the received reference signal port can determine at least one of the following: a received transmit beam or a transmit beam range, and a radio link port from which the transmit beam is derived, which solves the problem of low measurement efficiency of channel state information in the related art. Improve the reliability of data synchronization.

Claims

A method for measuring channel state information includes:

The first device sends the N reference signal ports to the second device on the specified reference signal resource according to the specified sending manner, where the reference signal port is used by the second device to measure the first device and the second device Channel state information between devices, where N is a positive integer;

The first device receives channel state information that is fed back by the second device.
The method according to claim 1, wherein the specified transmission mode comprises a first transmission mode or a second transmission mode, wherein the first transmission mode is that the first device uses the reference signal port as the first class. The sending beam is sent to the second device, where the second sending mode is that the first device sends the reference signal port to the second device by using the second type of transmitting beam.
The method according to claim 2, wherein said first type of transmission beam is a signal obtained by said reference signal port being weighted by said first type of precoding and said second type of precoding; said second type of transmission beam is The reference signal port only passes through the second type of precoding weighted signal.
The method of claim 3 wherein said first type of precoding is baseband precoding and said second type of precoding is radio frequency precoding.
The method according to claim 1, wherein the specified transmission manner comprises repeatedly transmitting the reference signal port of the first device Q times in the same transmission manner, wherein Q is an integer greater than 1.
The method of claim 5, wherein the Q repeated transmissions are respectively located in Q different sets of time units, wherein the set of time units includes at least one time unit.
The method of claim 1 wherein said specified transmission method is The pre-agreed transmission mode of the first device and the second device is notified to the at least one of the first device and the second device by the network side by signaling.
The method of claim 1, wherein the specified reference signal resource comprises at least one of: a specified frequency domain subcarrier location, a specified time domain time unit.
The method of claim 8 wherein said specified frequency domain subcarrier locations comprise equally spaced subcarrier locations.
The method of claim 8, wherein at least one of the subcarrier location, time unit is signaled to the second device by the first device.
The method of claim 1, wherein the first device transmits the reference signal port with a first type of transmit beam at equally spaced subcarrier locations in the frequency domain.
The method of claim 11, wherein the first device transmits the reference signal port with the same first type of transmit beam at equally spaced subcarrier locations in the frequency domain.
The method of claim 11 wherein said subcarrier locations have a corresponding relationship with said first type of transmit beam.
The method according to claim 13, wherein the correspondence is pre-agreed by the first device and the second device or is signaled to at least one of the first device and the second device by the network side. .
The method of claim 13 wherein said correspondence comprises one of:

Each of the M consecutive subcarrier positions in the frequency domain from low to high corresponds to M different first type of transmit beams in a fixed order;

Frequency domain from high to low every M consecutive consecutive subcarrier positions corresponding to M different first type transmission beams in a fixed order;

The M different first type transmission beams correspond to M different first type precoding weights and one same second type precoding weight, and the M is an integer greater than 1.
The method of claim 13 wherein said correspondence comprises:

Each N consecutive subcarrier positions in the frequency domain from low to high or from high to low is one subcarrier group, and N subcarriers in each subcarrier group correspond to N different first type transmission beams in a fixed order The N different first type of transmit beams correspond to N different second type precoding weights and the same first type of precoding weights, and the first type of transmit beams on different subcarrier groups correspond to different ones. The first type of precoding weights and corresponding to the same second type of precoding weights in the order of subcarriers within the group.
The method of claim 16, wherein the N subcarriers within each subcarrier group are respectively located in N different time units.
The method of claim 1, wherein the first device transmits the reference signal port by at least one of: transmitting the reference with a second type of transmit beam at equally spaced subcarrier positions in the frequency domain The signal port transmits the N reference signal ports by N different second type transmission beams on the same time unit.
The method of claim 18 wherein said first device transmits the same reference signal port at equally spaced subcarrier locations in the frequency domain.
The method of claim 18, wherein the N reference signal ports are in one-to-one correspondence with N different subcarrier positions, respectively.
The method according to claim 18, wherein the N reference signal ports are respectively transmitted on N different time units.
The method of claim 1 wherein said N reference signal ports are respectively N reference signal sequences.
The method of claim 22 wherein said reference signal sequence consists of a pseudo noise sequence or a constant envelope zero autocorrelation sequence.
The method according to claim 22, wherein the generation of the reference signal sequence is related to at least one of: a beam identification of a transmission beam transmitting the reference signal port, and a radio frequency at which a transmission beam of the reference signal port is transmitted Link port ID.
The method according to claim 1, wherein the value of N comprises at least one of: a number of radio link ports of the first device, a number of types of transmit beams of the first type, a number of transmit beams of the second type, and a first type of pre- The number of encoding weights, the number of second type precoding weights, and the maximum number of transmission layers.
The method of claim 1, wherein the channel state information comprises first type channel state information or second type channel state information.
The method of claim 26, wherein the first type of channel state information comprises at least one of: one or a set of first type of transmit beam identification information, the one or a set of second type of transmit beams corresponding to Time-frequency resource information, sub-carrier position information of the one or a group of first-type transmit beams, radio link port information corresponding to the one or a group of first-type transmit beams, and the one or a group of transmit beams Corresponding channel quality information, wherein the beams in the set of first type of transmit beams are respectively from different radio frequency link ports, wherein one set represents multiple.
The method of claim 26, wherein the second type of channel state information comprises at least one of: one or a set of second type of transmit beam identification information, reference signal port information, the one or a second set of Subcarrier position information corresponding to the class transmission beam, subcarrier position information corresponding to the reference signal port, first type precoding weight information, based on the one or a group of second type transmission beams, and the first type of pre Channel quality information under the coding weight, where a group represents a plurality.
A method for measuring channel state information includes:

The second device receives the N reference signal ports sent by the first device on the specified reference signal resource;

The second device measures channel state information between the first device and the second device according to the reference signal port received on the specified reference signal resource, and feeds back the channel state information to the The first device, wherein the N is a positive integer.
The method of claim 29, wherein the specified reference signal resource comprises at least one of: a specified frequency domain subcarrier location, a specified time domain time unit.
The method of claim 30 wherein said specified frequency domain subcarrier locations comprise equally spaced subcarrier locations.
The method of claim 30, wherein at least one of the subcarrier location, time unit is obtained by the second device by receiving signaling from the network side.
The method of claim 29, wherein the second device receives the reference signal port in a frequency domain equally spaced subcarrier position in the designated reference signal resource.
The method according to claim 29, wherein the second device acquires a transmission manner of the reference signal port according to a pre-agreed manner or by receiving a signaling from the network side.
The method of claim 34, wherein the sending mode comprises a first sending mode or a second sending mode, wherein the first sending mode is that the first device sends the reference signal port to the first type of transmitting beam. Sending to the second device, the second sending manner is that the first device sends the reference signal port to the second device by using the second type of transmit beam.
The method of claim 35, wherein the first type of transmit beam is a signal that is weighted by the reference signal port by a first type of precoding and a second type of precoding, and the second type of transmit beam is The reference signal port only passes through the second type of precoding weighted signal.
The method of claim 36 wherein said first type of precoding is baseband precoding and said second type of precoding is radio frequency precoding.
The method according to claim 34, wherein the transmitting manner comprises repeatedly transmitting the reference signal port of the first device Q times in the same transmission manner, where Q is an integer greater than 1.
The method of claim 38, wherein the Q repeated transmissions are respectively located in Q different sets of time units, wherein the set of time units comprises at least one time unit.
The method of claim 29 wherein said N reference signal ports are respectively N reference signal sequences.
The method of claim 40 wherein said reference signal sequence consists of a pseudo noise sequence or a constant envelope zero autocorrelation sequence.
The method according to claim 40, wherein the generation of the reference signal sequence is related to at least one of: a beam identification of a transmission beam transmitting the reference signal port, and a radio frequency at which a transmission beam of the reference signal port is transmitted Link port ID.
The method according to claim 29, wherein said designated reference signal resource has a correspondence relationship with a transmission beam for transmitting said reference signal port, said correspondence being determined by a predetermined manner or by receiving a network side The signaling is known.
The method according to claim 29, wherein said reference signal port has a correspondence relationship with a transmission beam for transmitting said reference signal port, said correspondence relationship It is determined by a pre-agreed manner or by receiving signaling notifications on the network side.
The method according to claim 29, wherein the specified reference signal resource has a correspondence relationship with a radio frequency link port where the transmission beam of the reference signal port is transmitted, and the correspondence is determined by a pre-agreed manner. Or it is learned by receiving signaling notifications on the network side.
The method according to claim 29, wherein the reference signal port has a correspondence relationship with a radio frequency link port in which the transmission beam of the reference signal port is transmitted, and the correspondence is determined or passed in a pre-agreed manner. The signaling notification on the receiving network side is known.
The method of claim 43 wherein said correspondence comprises one of:

Transmitting M different first type transmission beams in a fixed order for each M consecutive subcarrier positions in the frequency domain from the lowest to the highest in the specified reference signal resource;

Each of the M consecutive subcarriers in the frequency domain from the highest to the low in the specified reference signal resource corresponds to M different first type of transmit beams;

The M different first type transmission beams correspond to M different first type precoding weights and one same second type precoding weight, and the M is an integer greater than 1.
The method according to claim 43, wherein the correspondence relationship comprises: a subcarrier group per N consecutive contiguous subcarrier positions in the frequency domain from low to high or high to low in the specified reference signal resource, The N subcarriers in each subcarrier group correspond to N different first type transmission beams in a fixed order, and the N different first type transmission beams correspond to N different second type precoding weights and the same number A type of precoding weights, the first type of transmission beams on different subcarrier groups corresponding to different first type precoding weights and corresponding to the same second type of precoding weights in the order of subcarriers in the group.
The method of claim 48, wherein the N subcarriers within each subcarrier group are respectively located in N different time units.
The method according to claim 43, wherein the correspondence relationship comprises different equal-spaced subcarrier positions in the specified reference signal resources corresponding to different second type of transmit beams.
The method according to claim 43, wherein the correspondence relationship comprises that the N reference signal ports correspond to N different second type of transmit beams on the same time unit in the specified reference signal resource.
The method according to claim 47, wherein the second device determines a beam identification or a beam identification range of the first type of transmission beam according to a subcarrier position where the reference signal port is located, and when the second device Determining, according to the subcarrier position where the reference signal port is located, the beam identification range of the first type of transmission beam, the second device further determining the first type of transmission beam by blind detection within the beam identification range Beam identification.
The method of claim 47, wherein the second device determines a radio frequency link port in which the first type of transmit beam is located according to the subcarrier position.
The method according to claim 50, wherein said second device determines a beam identification or a beam identification range of said second type of transmission beam according to said reference signal port, and when said second device is based on said reference signal In the case that the port determines the beam identification range of the second type of transmission beam, the second device further determines the beam identification of the second type of transmission beam by blind detection within the beam identification range.
The method according to claim 50, wherein the second device determines, according to the reference signal port, a radio frequency link port on which the second type of transmit beam is located, or the second device according to the reference signal The port determines the radio link port where the second type of transmit beam is sent, and determines the radio link port pair by using blind detection. The beam identification of the intended transmit beam.
The method of claim 29, wherein the value of N comprises at least one of: a maximum number of radio link ports used by the first device to transmit the reference signal port, a number of first type of transmit beams, The second type of transmit beam number, the first type of precoding weights, the second type of precoding weights, and the maximum number of transmission layers.
The method of claim 29, wherein the channel state information comprises first type channel state information or second type channel state information.
The method of claim 57, wherein the first type of channel state information comprises at least one of: one or a set of first type of transmit beam identification information, the one or a set of first type of transmit beams corresponding to Time-frequency resource information, sub-carrier position information of the one or a group of first-type transmit beams, radio link port information corresponding to the one or a group of first-type transmit beams, and the one or a group of transmit beams Corresponding channel quality information, wherein the beams in the set of first type of transmit beams are respectively from different radio frequency link ports, wherein one set represents multiple.
The method of claim 57, wherein the second type of channel state information comprises at least one of: one or a set of second type of transmit beam identification information, reference signal port information, the one or a second set of The time-frequency resource information corresponding to the class-transmitting beam, the sub-carrier position information corresponding to the one or a group of the second type of transmitting beams, the sub-carrier position information corresponding to the reference signal port, and the first type of pre-coding weight information, based on The one or a group of the second type of transmission beam and the channel quality information of the first type of precoding weights, wherein the beams of the group of the second type of transmission beams are respectively from different radio frequency link ports, wherein one The group represents multiple.
A device for measuring channel state information, which is disposed on the first device, and includes:

a sending module, configured to send the N reference signal ports to the second device according to the specified sending manner, where the reference signal port is used The second device measures channel state information between the first device and the second device, where N is a positive integer;

The receiving module is configured to receive channel state information fed back by the second device.
The device according to claim 60, wherein the specified transmission mode comprises a first transmission mode or a second transmission mode, wherein the first transmission mode is that the first device uses the reference signal port as the first class. The sending beam is sent to the second device, where the second sending mode is that the first device sends the reference signal port to the second device by using the second type of transmitting beam.
The apparatus according to claim 60, wherein said specified transmission mode comprises repeatedly transmitting said reference signal port of said first device Q times in the same transmission mode, wherein Q is an integer greater than one.
The device according to claim 60, wherein the specified sending mode is a pre-agreed transmission mode of the first device and the second device, or is notified by the network side to the first device and the second device. At least one.
The apparatus of claim 60, wherein the specified reference signal resource comprises at least one of: a specified frequency domain subcarrier location, a specified time domain time unit.
The apparatus of claim 60, wherein the first device transmits the reference signal port with a first type of transmit beam at equally spaced subcarrier locations in the frequency domain.
The apparatus according to claim 60, wherein said first device transmits said reference signal port by at least one of: transmitting said reference in a frequency domain equally spaced subcarrier position with a second type of transmit beam The signal port transmits the N reference signal ports by N different second type transmission beams on the same time unit.
The apparatus of claim 60, wherein said N reference signal terminals The ports are respectively N reference signal sequences.
The apparatus according to claim 60, wherein the value of N comprises at least one of: a number of radio link ports of the first device, a number of types of transmit beams of the first type, a number of transmit beams of the second type, and a first type of pre- The number of encoding weights, the number of second type precoding weights, and the maximum number of transmission layers.
The apparatus of claim 60, wherein the channel state information comprises first type channel state information or second type channel state information.
A device for measuring channel state information, which is disposed in a second device, and includes:

a receiving module, configured to receive N reference signal ports sent by the first device on the specified reference signal resource;

a processing module, configured to measure channel state information between the first device and the second device according to the reference signal port received on the specified reference signal resource, and feed back the channel state information to the The first device, wherein the N is a positive integer.
The apparatus of claim 70, wherein the specified reference signal resource comprises at least one of: a specified frequency domain subcarrier location, a specified time domain time unit.
The apparatus of claim 70 wherein said N reference signal ports are respectively N reference signal sequences.
The apparatus according to claim 70, wherein said specified reference signal resource has a correspondence relationship with a transmission beam for transmitting said reference signal port, said correspondence being determined by a predetermined manner or by receiving a network side The signaling notification is learned; or, the reference signal port has a correspondence relationship with the transmission beam that sends the reference signal port, and the correspondence is determined by a pre-agreed manner or by receiving signaling notification on the network side; or Corresponding relationship between the specified reference signal resource and a radio link port where the transmit beam of the reference signal port is sent, where the pair The relationship is determined by a pre-agreed manner or by the signaling of the receiving network side; or the reference signal port has a corresponding relationship with the radio frequency link port where the transmitting beam of the reference signal port is located, The correspondence is determined by a pre-agreed manner or by receiving signaling notifications on the network side.
The apparatus according to claim 70, wherein the value of N comprises at least one of: a maximum number of radio link ports used by the first device to transmit the reference signal port, a number of first type of transmit beams, The second type of transmit beam number, the first type of precoding weights, the second type of precoding weights, and the maximum number of transmission layers.
The apparatus of claim 70, wherein the channel state information comprises first type channel state information or second type channel state information.
A storage medium, the storage medium comprising a stored program, wherein the program is executed to perform the method of any one of claims 1 to 59.