WO2018171786A1

WO2018171786A1 - Information transmission method and device

Info

Publication number: WO2018171786A1
Application number: PCT/CN2018/080390
Authority: WO
Inventors: 任海豹; 黄逸; 李元杰
Original assignee: 华为技术有限公司
Priority date: 2017-03-24
Filing date: 2018-03-24
Publication date: 2018-09-27

Abstract

The present application provides an information transmission method and device. The method comprises: an access network device receives antenna port grouping information from a terminal device; the antenna port grouping information comprises information of at least one antenna port group of the terminal device and information of at least one antenna port comprised in each antenna port group, or information of at least one antenna port group of the terminal device and information of antenna ports of the terminal device; and the access network device sends, according to the antenna port grouping information, indication information to the terminal device, the indication information being used for indicating an antenna port group set used by the terminal device in performing uplink information transmission at a first moment, the antenna port group set comprising at least one first antenna port group, and the first antenna port group being one of the antenna port groups indicated by the antenna port grouping information. The method of the present invention prevents the terminal device from continuously transmitting uplink information on a shielded antenna port; therefore, the uplink information transmission efficiency of the terminal device is improved and the power consumption of the terminal device is also reduced.

Description

Information transmission method and device

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and device for transmitting information.

Background technique

Massive Multiple Input Multiple Output (Massive MIMO) can further improve system capacity by utilizing more spatial freedom. It is one of the key technologies in the new generation of Radio Access Technology (NR). The terminal device in the NR is configured with more antennas than the terminal device in the LTE. For example, the uplink transmission of the NR uplink supports up to 4 antennas, and the uplink transmission in the NR can support the antenna port simultaneously transmitted. The number may be 8, 16, or even 32. In addition, the number of receiving antennas that can be supported by the UE side is correspondingly increased, so that interference suppression gain, diversity gain, and multi-antenna combining can be provided through joint processing of multiple receiving antennas. Gain, etc.

In the prior art, a terminal device uses a plurality of fixed antenna ports for uplink information transmission. However, in a practical application scenario, a general scatterer is generally abundant around the terminal device, and beam interception may occur at a high frequency, resulting in some The antenna port may be occluded. If the information transmission method in the prior art is still adopted, the information transmission efficiency is low, and the power consumption of the terminal device is large.

Summary of the invention

The present application provides a method and a device for transmitting information, which are used to solve the technical problem that the information transmission efficiency is low and the power consumption of the terminal device is large in the prior art.

In a first aspect, an embodiment of the present invention provides a method for information transmission, including:

The access network device receives antenna port grouping information from the terminal device; the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or Information of at least one antenna port group of the terminal device and information of an antenna port of the terminal device;

The access network device sends the indication information to the terminal device according to the antenna port grouping information, where the indication information is used to indicate the antenna port group set used by the terminal device to perform uplink information transmission at the first moment. The set of antenna port groups includes at least one first antenna port group, and the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information.

Optionally, in the case that the antenna port grouping information includes the information of the at least one antenna port group of the terminal device and the information about the antenna port of the terminal device, the method may further include:

Determining, by the access network device, each antenna port group according to information of at least one antenna port group of the terminal device, information of an antenna port of the terminal device, and a correspondence between an antenna port and an antenna port group Information including at least one antenna port.

Optionally, the information about the antenna port group may be the number of antenna port groups;

Optionally, the information about the antenna port of the terminal device may be the number of antenna ports of the terminal device;

Optionally, the correspondence between the antenna port and the antenna port group may be that the number of antenna ports of each antenna port group is a quotient of the total number of antenna ports and the antenna port group. For example, if the terminal device reports that it has 8 antenna ports and has 2 antenna port groups, the information of at least one antenna port included in each of the antenna port groups is 4.

Optionally, the antenna port may be an antenna port capable of performing transmission of a reference signal for channel quality detection. For example, an antenna port for SRS transmission may be simply referred to as an SRS antenna port.

Optionally, the method further includes:

The access network device sends precoding matrix information to the terminal device, and the precoding matrix information is used for determining the precoding matrix W of the terminal device.

In a second aspect, the application provides a method for transmitting information, including:

The terminal device sends antenna port grouping information to the access network device; the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or Information of at least one antenna port group of the terminal device and information of an antenna port of the terminal device;

The terminal device receives indication information from the access network device; the indication information is used to indicate an antenna port group set used by the terminal device to perform uplink information transmission at a first moment, where the antenna port group set includes At least one first antenna port group, the first antenna port group being one of the antenna port groups indicated by the antenna port grouping information.

Optionally, in the case that the antenna port grouping information includes information about at least one antenna port group of the terminal device and information about an antenna port of the terminal device, the antenna port grouping information may further include each antenna. The information of at least one antenna port included in the port group is not limited in this application.

Optionally, the foregoing method further includes:

The terminal device receives precoding matrix information sent by the access network device, and the precoding matrix information is used for determining the precoding matrix W of the terminal device.

The method for transmitting information according to the first aspect and the second aspect, wherein the terminal device reports the antenna port grouping information to the access network device, and the access network device sends the indication information to the terminal device according to the antenna port grouping information, thereby causing the terminal to The device learns, according to the indication information, the set of antenna port groups selected by the access network device for the terminal device, and then uses the first antenna port group in the antenna port group set to transmit the uplink information when the first time arrives. Since the first antenna port group in the antenna port group set selected by the access network device for the terminal device is an antenna port with high transmission efficiency or the port is not blocked or the beam is not blocked, the terminal device is prevented from continuing to be blocked. The uplink information is sent on the port, which improves the uplink information transmission efficiency of the terminal device and reduces the power consumption of the terminal device.

As one possible application of the present embodiment, the above-mentioned precoding matrix information comprising: a first matrix W ₁ transmission and the precoding matrix TPMI TPMI matrix W ₂ of the second, W ₁ for the first antenna port to characterize different groups The phase correlation between the _two , the first precoding matrix w corresponding to the first antenna port group, the first precoding matrix w corresponding to each first antenna port group being the same, the first TPMI and the second TPMI Used for the determination of the precoding matrix W.

The above possible implementations, optional,

Where K is the number of the first antenna port group in the above antenna port group set,

A phase correlation factor between the k-th antenna of the first group and the first port a first antenna port group, k is in the range [1, K-1]; W ₁ is equal to the number of rows of antenna ports in the group set The number of the first antenna port group, the number of rows of W ₂ is equal to the total number of antenna ports in the first antenna port group, the number of columns of W ₁ is 1, and the number of columns of W ₂ is the access network device and the terminal device. The number of transmission layers between.

The above possible implementations, optional,

W=W ₁ ×W ₂ ; wherein I _N is a unit matrix of N rows and N columns, N is the number of antenna ports in the first antenna port group, and K is the first antenna port in the antenna port group set Number of groups,

A phase correlation factor between the k-th antenna of the first group and the first port a first antenna port group, k is in the range [1, K-1, W ₁ is the number of rows is equal to the set of all the antenna port group The total number of antenna ports, the number of rows of W ₂ is equal to the total number of antenna ports in the first antenna port group, the number of columns of W ₁ is the total number of antenna ports of the first antenna port group, and the column of W ₂ The number is the number of transmission layers between the access network device and the terminal device.

As another possible implementation manner of the present application, the precoding matrix information includes: a fourth TPMI of a matrix W _P , where the fourth transmission precoding matrix TPMI is used to represent phase correlation between different first antenna port groups of the matrix W ₁ and is equal to a first set of antenna ports corresponding to a first precoding matrix w matrix W _2, the same each first port set corresponding to a first antenna precoding matrix w;

The number of rows of W _P is equal to the total number of all antenna ports in the set of antenna port groups, and the number of rows of W _P is equal to the number of transmission layers between the access network device and the terminal device.

Optionally, the indication information includes at least one of antenna port selection matrix information, a medium access control unit MAC CE, and at least one uplink sounding reference signal resource identifier SRI; wherein different antenna port selection matrix information corresponds to different antennas A set of port groups, different MAC CEs correspond to different sets of antenna port groups, and different SRIs correspond to different antenna port groups.

Optionally, the antenna port selection matrix information includes an antenna port selection matrix or an identifier of the antenna port selection matrix.

Further, the antenna port selection matrix is a matrix of N rows and one column, and some elements in the antenna port selection matrix are 0, and the remaining elements are 1, and the N is the number of antenna port groups reported by the terminal device. .

Optionally, the first TPMI is a broadband transmission precoding matrix indication, and the second TPMI is a broadband transmission precoding matrix indication;

or,

The first TPMI is a broadband transmission precoding matrix indication, the second TPMI is a subband TPMI, and the subband TPMI is used to indicate W ₂ used by the terminal device on the subband;

or,

The first TPMI is a transmission precoding matrix indication of a subband, and the second TPMI is a wideband transmission precoding matrix indication.

In the implementation manner of the indication information provided by the foregoing, the access network device can notify the terminal device of the first antenna port group that should be used when the terminal device arrives at the first time by using different types of indication information, enriching the access network device direction. The terminal device indicates the diversity of the first antenna port group.

In a third aspect, the application provides a method for transmitting information, including:

The access network device receives antenna port grouping information from the terminal device, the antenna port grouping information including information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or Information of at least one antenna port group of the terminal device and information of an antenna port of the terminal device;

Transmitting, by the access network device, a transmission precoding matrix indication TPMI of the precoding matrix W to the terminal device;

Wherein W is a first precoding matrix w corresponding to the first antenna port group in the antenna port group set, and a precoding matrix related to phase correlation between different first antenna port groups, the antenna port group set Included in the at least one first antenna port group, the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information, and the first precoding matrix w corresponding to each of the first antenna port groups is the same;

The number of rows of W is equal to the sum of the number of antenna ports of the terminal device, and the number of columns of W is equal to the number of transmission layers between the access network device and the terminal device.

In a fourth aspect, the application provides a method for transmitting information, including:

The terminal device sends antenna port grouping information to the access network device, where the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal Information of at least one antenna port group of the device and information of an antenna port of the terminal device;

The terminal device receives a transmission precoding matrix indication TPMI from a precoding matrix W of the access network device, where the W is a first precoding matrix corresponding to a first antenna port group in the antenna port group set And a precoding matrix related to phase correlation between different first antenna port groups, the antenna port group set including at least one first antenna port group, the first antenna port group being the antenna port grouping One of the antenna port groups indicated by the information, and the first precoding matrix w corresponding to each of the first antenna port groups is the same;

The method for transmitting information provided by the foregoing third aspect and the fourth aspect, the access network device informing the terminal device to determine the TPMI of the precoding matrix W, since the precoding matrix W considers the phase between different first antenna port groups The correlation improves the inter-layer interference suppression capability when the terminal device uses the precoding matrix W for uplink data transmission.

In a fifth aspect, the application provides a method for transmitting information, including:

The access network device receives antenna port group information from the terminal device, where the antenna port group information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or Information of at least one antenna port group of the terminal device and information of an antenna port of the terminal device;

TPMI access network device indicating a second TPMI matrix W ₂ and to the first transmitting terminal device transmits precoding matrix _X of matrix W, W _x access network device for characterizing the antenna port group selected from the at least one antenna port group a selection factor of the set and a phase correlation between different first antenna port groups in the antenna port group set, where W ₂ is a first precoding matrix w corresponding to the first antenna port group, and each of the first antenna port groups corresponds to The first precoding matrix w is the same, the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information, and the first TPMI and the second TPMI are used for determining the precoding matrix W.

In a sixth aspect, the application provides a method for transmitting information, including:

Receiving, by the terminal device, the first transmission precoding matrix of the matrix W _x from the access network device, the TPMI and the second TPMI of the matrix W ₂ , wherein the W _{x is} used to characterize the access network device to select an antenna port from the at least one antenna port group a selection factor of the group set and a phase correlation between different first antenna port groups in the antenna port group set, where W ₂ is a first precoding matrix w corresponding to the first antenna port group, and each first antenna port group corresponds to The first precoding matrix w is the same; the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information, and the first TPMI and the second TPMI are used for the determination of the precoding matrix W.

Optionally, the antenna port may be an antenna port capable of performing transmission of a reference signal for channel quality detection. For example, an antenna port for SRS transmission may be simply referred to as an SRS antenna port. Optional,

The number of rows of W _x is equal to the number of first antenna port groups in the set of antenna port groups, the number of columns of W _x is 1, and the number of rows of W ₂ is equal to the total number of antenna ports in the first antenna port group. Number, the number of columns of W ₂ is the number of transmission layers between the access network device and the terminal device; the M elements in W _x are complex numbers with a modulus of 1, and the remaining elements are 0, and the M is The number of first antenna port groups in the set of antenna port groups.

Optionally, W=W _x ×W ₂ , where the number of rows of W _x is equal to the total number of all antenna ports of the terminal device, and the number of columns of W _x is equal to the total number of antenna ports in the first antenna port group, The number of rows of W ₂ is equal to the total number of antenna ports in the first antenna port group, and the number of columns of W ₂ is the number of transmission layers between the access network device and the terminal device; all elements in the same row in W _x Similarly, the M row element in the W _x is a complex number of modulo 1, and the corresponding element of the remaining row is 0, and the M is the number of the first antenna port group in the antenna port group set.

The method for transmitting information provided by the fifth aspect and the sixth aspect, the access network device informing the terminal device to determine the first TPMI and the second TPMI of the precoding matrix W, because the W _x corresponding to the first TPMI is considered differently The phase correlation between the first antenna port groups improves the inter-layer interference suppression capability of the terminal device using the precoding matrix W for uplink data transmission; in addition, the access network device does not need to transmit a direct precoding matrix to the terminal device. W is calculated by the terminal device according to the precoding matrix information, which saves the air interface overhead of transmitting the precoding matrix.

In a seventh aspect, the present application further provides an apparatus, including a processor and a memory, the memory is configured to store an instruction, and the processor is configured to execute the memory stored instruction when the processor executes the memory stored instruction The user equipment is used to perform any of the methods involved in the user equipment as described in the first aspect.

Optionally, the device may further comprise a transceiver. Optionally, the device may be a terminal device or a chip that can be disposed in the terminal device.

In an eighth aspect, there is also provided an apparatus comprising a processor and a memory, the memory for storing instructions, the processor for executing the instructions stored by the memory, when the processor executes the instructions stored by the memory, The wireless network device is used to perform any of the methods involved in the wireless network device as described in the second aspect.

Optionally, the device may further comprise a transceiver. Optionally, the device may be an access network device or a chip that can be disposed in the access network device.

The ninth aspect, further provides a transmission device for information, including some modules, for implementing any one of the foregoing methods of the terminal device. The specific modules may correspond to the method steps, and are not described herein.

In one possible design, the above apparatus includes one or more processors and communication units. The one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal device in the above method. The communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, the antenna port packet information is transmitted, and the indication information from the access network device is received.

Optionally, the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.

The device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or an interface.

The device can also be a communication chip. The communication unit may be an input/output circuit or interface of a communication chip.

In another possible design, the above apparatus includes a transceiver, a processor, and a memory. The processor is for controlling a transceiver or an input/output circuit for transmitting and receiving signals, the memory for storing a computer program for executing a computer program in the memory, such that the device performs the second aspect, the fourth aspect, the sixth aspect The method of completion of the terminal device in any of the possible implementations of any of the second, fourth, or sixth aspects.

The tenth aspect, further provides a transmission device for information, including some modules, for implementing any one of the methods involved in the foregoing access network device. The specific modules may correspond to the method steps, and are not described herein.

In one possible design, the above apparatus includes one or more processors and communication units. The one or more processors are configured to support the apparatus to perform the corresponding functions of the access network device in the above method. The communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, receiving antenna port grouping information from a terminal device.

Optionally, the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the wireless network device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.

The device may be a base station, a gNB or a TRP, etc., and the communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or an interface.

In another possible design, the above apparatus includes a transceiver, a processor, and a memory. The processor is configured to control a transceiver or an input/output circuit for transmitting and receiving signals, the memory for storing a computer program for executing a computer program in the memory, such that the apparatus performs the first aspect, the third aspect, and the fifth aspect, Or the method of completing the access network device in any one of the possible implementation manners of any one of the first, the third, or the fifth aspect.

In an eleventh aspect, a computer storage medium is provided for storing instructions that, when executed, perform any of the methods involved in the foregoing terminal device or access network device.

According to a twelfth aspect, a computer program product is provided for storing a program or an instruction, and when the program or the instruction is executed, any one of the methods involved in the terminal device or the access network device can be completed.

In a thirteenth aspect, a communication system is further provided, including the terminal device and the access network device provided in the foregoing.

Compared with the prior art, the method and device for transmitting information provided by the present application report the antenna port grouping information to the access network device through the terminal device, and the access network device sends the indication information to the terminal device according to the antenna port grouping information, thereby The terminal device obtains, according to the indication information, the set of antenna port groups selected by the access network device for the terminal device, and then uses the first antenna port group in the antenna port group set to transmit the uplink information when the first time arrives. Since the first antenna port group in the antenna port group set selected by the access network device for the terminal device is an antenna port with high transmission efficiency or the port is not blocked or the beam is not blocked, the terminal device is prevented from continuing to be blocked. The uplink information is sent on the port, which improves the uplink information transmission efficiency of the terminal device and reduces the power consumption of the terminal device.

DRAWINGS

1 is a network diagram of a system provided by the present application;

2 is a signaling flowchart of an embodiment of a method for transmitting information provided by the present application;

3 is a schematic diagram of an antenna port grouping provided by the present application;

FIG. 3a is a schematic diagram of an antenna port grouping provided by the present application; FIG.

FIG. 3b is a schematic diagram of an antenna port grouping provided by the present application; FIG.

4 is a signaling flowchart of Embodiment 2 of a method for transmitting information provided by the present application;

FIG. 5 is a signaling flowchart of Embodiment 3 of a method for transmitting information provided by the present application;

FIG. 6 is a signaling flowchart of Embodiment 4 of a method for transmitting information provided by the present application;

FIG. 7 is a schematic diagram of an apparatus (such as a terminal device) for information transmission according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of another apparatus for information transmission, such as an access network device, according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of an access network device according to an embodiment of the present invention.

detailed description

The method and device for transmitting information provided by the present application can be applied to the system architecture diagram shown in FIG. 1. As shown in FIG. 1, the system architecture includes: an access network device and at least one terminal device. The terminal device has a plurality of antenna ports. Optionally, the terminal device may include multiple antenna panels, and each antenna panel may include multiple antenna ports, which is not limited in this embodiment. For the system architecture shown in FIG. 1 , the method for transmitting information provided by the present application may be applicable to a scenario in which an access network device selects an appropriate antenna port for uplink data transmission by the terminal device, and may also be applied to the terminal device for uplink prediction. The scene of the encoded transmission.

The scenario of performing precoding transmission on the terminal device is specifically: when the number of antenna ports on the terminal device side is increased, the precoding matrix is used to preprocess the data to be sent, which can reduce the difference between different data streams of the same user. Interference, which improves system performance. The transmission precoding matrix indicator (TPMI) information required for the precoding of the terminal device may be obtained by using Downlink Control Information (DCI) of the access network device, or by uplink and downlink channels. The availability is obtained, so that the terminal device can perform uplink data transmission according to the precoding matrix indicated in the downlink signaling. Specifically, it can be divided into three types:

1) The access network device may perform uplink channel estimation according to an uplink sounding reference signal (SRS), and determine a precoding matrix corresponding to the terminal device side in a preset codebook according to the result of the uplink channel estimation. TPMI is delivered to the terminal device through DCI.

2) The terminal device presets some precoding matrix transmission reference signals (that is, the signals are reference signals encoded by the precoding matrix), and the base station selects one of the reference signals according to the received signal strength and indicates to the terminal device, and the terminal device uses Precoding the uplink data channel by using a precoding matrix corresponding to the reference signal indicated by the base station;

3) The terminal device performs channel estimation according to a Channel State Information Reference Signal (CSI-RS), and calculates an uplink precoding matrix according to the reciprocity of the uplink and downlink channels.

Generally, for each rank, the system designs a certain number of precoding matrices to represent the quantized channel or the direction vector corresponding to the channel. These precoding matrices are designed to form a codebook, and each precoding matrix in the codebook corresponds to One or more precoding matrix indexes, usually the precoding matrix index has a corresponding relationship with the corresponding TPMI. It should be noted that the codebook is predefined, and the access network device and the terminal device both store the corresponding codebook, and the correspondence between each precoding matrix, precoding matrix index and PMI in the codebook. The understanding is consistent. After the access network device selects a precoding matrix from the defined codebook and determines its precoding matrix index according to the estimated uplink channel, only the TPMI corresponding to the selected precoding matrix needs to pass downlink signaling ( For example, the physical layer signaling (DCI, etc.) can be notified to the terminal device, and the terminal device can determine a specific precoding matrix according to the signaling sent by the access network device.

In addition, it should be noted that, in order to reduce the cost of the terminal device side, the number of receiving channels on the terminal device side is generally greater than the number of transmitting channels (the channel here refers to the RF channel between the antenna port and the RF circuit), so the terminal device The number of transmit channels is generally defined as the maximum number of transmit antenna ports used simultaneously. The terminal device sends uplink detection signals on different antenna ports at different times (optional, different antenna ports can be connected to the same RF channel through switches), and the base station can complete different antenna ports to the access network devices. Upstream channel information measurement.

The access network device shown in FIG. 1 may refer to a device in the access network that communicates with the wireless terminal through the at least one sector on the air interface. Optionally, the wireless access network device may be used to receive the received The air frame is inter-transformed with the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network may include an Internet Protocol (IP) network. Optionally, the radio access network device can also coordinate attribute management of the air interface. Optionally, the foregoing radio access network device may be a base station, where the base station may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNodeB or eNB or e-NodeB, evolved Node B) in LTE. It may be a Transmission Reception Point (TRP) in 5G, which is not limited in this application.

The terminal device shown in FIG. 1 may be a User Equipment (UE), which is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, and an in-vehicle device. Wait. Alternatively, the device can be a handheld device with wireless connectivity or other processing device connected to a wireless modem. Moreover, the wireless terminal can also communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), for example, the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" "Phone" and a computer having a mobile terminal, which may be a portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile device that can interact with the core network for voice and/or data. In addition, optionally, the terminal device in this application may be a device including an antenna panel in an LTE system, or may be a device including multiple antenna panels, each antenna panel including multiple antenna ports.

It will be understood that "at least one" as used in the embodiments of the invention means "one" or "one or more."

In addition, the present application can be applied not only to a 5G system but also to a wireless communication system such as a Universal Mobile Telecommunications System (UMTS) system, a CDMA system, or a Wireless Local Area Network (WLAN).

In the prior art, the terminal device uses a plurality of fixed antenna ports for uplink information transmission. However, since the scatterers are generally abundant around the terminal device, beam blocking may occur at high frequencies, and some antenna ports may be present. In the case of occlusion, if the above information transmission method is still adopted, the information transmission efficiency is low, and the power consumption of the terminal device is large. Therefore, the method and apparatus for transmitting information provided by the present application are directed to solving the above technical problems of the prior art.

The technical solutions of the present invention and the technical solutions of the present invention are described in detail below with reference to specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

FIG. 2 is a signaling flowchart of an embodiment of a method for transmitting information provided by the present application. The embodiment relates to a specific process of the terminal device selecting an appropriate antenna port group for uplink data transmission after the terminal device reports the antenna port grouping information of the terminal device to the access network device. As shown in Figure 2, the method includes:

S101: The terminal device sends antenna port grouping information to the access network device; the antenna port grouping information includes information of at least one antenna port group of the terminal device, and information of at least one antenna port included in each antenna port group, Or, comprising information of at least one antenna port group of the terminal device and information of an antenna port of the terminal device.

Specifically, in the present application, the terminal device has multiple antenna ports, and the terminal device groups the multiple antenna ports. Alternatively, the terminal device may divide the antenna ports that are simultaneously transmitted into one group, or may be located together. The multiple antenna ports are grouped into one group. In this embodiment, how the terminal device groups the antenna ports is not limited. Optionally, the access network device may configure, by using the high layer signaling, the manner in which the terminal device performs the antenna port packet to perform the packet information reporting, where the high layer signaling may be a radio resource control RRC message or a media access control element MAC CE. When the terminal device has a plurality of antenna panels, the terminal device can divide the antenna ports on one antenna panel into one group. For example, as shown in FIG. 3, the terminal device has a total of eight antenna ports, and the eight antenna ports can be divided into two groups, each group of four antenna ports that can be simultaneously transmitted, and the two antenna port groups are respectively {0, 1, 2, 3} and {4, 5, 6, 7}, the terminal device can send the uplink sounding signal in a time division manner, so that the access network device acquires the complete channel of the eight antenna ports. As another example, as shown in FIG. 4, two cross-polarized antennas or adjacent co-polarized antennas, these antennas may experience similar channel characteristics, such as being occluded at the same time or simultaneously undergoing deep fading, thus, these experiences are the same. The antenna port of the channel feature is divided into one antenna port group, and the antenna port in FIG. 3a can be divided into four antenna port groups: {0, 2}, {1, 3}, {4, 6}, {5, 7} . For another example, as shown in FIG. 3b, a set of cross-polarized antennas has strong correlation between each set of polarized antennas, and a weak correlation between different polarized antenna groups, so that correlation between antennas can be performed. The antenna ports are divided into different antenna port groups, and the antennas belonging to the same antenna port group have strong correlation. The four antenna ports shown in Figure 3b are divided into two groups: {0, 1}, {2, 3 }.

After the terminal device divides the antenna port into the antenna port group, the antenna port group information is reported to the access network device, where the antenna port group information includes information of at least one antenna port group of the terminal device and included in each antenna port group. Information of at least one antenna port, that is, how many antenna port groups are present on the terminal device of the access network device, and several antenna ports in each antenna port group, or the antenna port grouping information may include the terminal device The information of at least one antenna port group and the total number of antenna ports, the access network device can obtain the information of the antenna port included in each antenna port group according to the information of the total antenna port number and the information of the antenna port group.

Optionally, the access network device may determine, according to the information about the total number of antenna ports and the information of the antenna port group, and the correspondence between the antenna port and the antenna port group, information about the antenna ports included in each antenna port group. For example, the correspondence between the antenna port and the antenna port group may be: the number of antenna ports included in each antenna port group is the quotient of the total antenna port and the antenna port group. For example, the total number of antenna ports reported by the terminal device is 8, and is divided into two antenna port groups, and the number of antenna ports included in each antenna port group is 8/2=4, respectively. Alternatively, the correspondence may be a rule that is consistent between other access network devices and terminal devices, and is not limited herein.

S102: The access network device receives the antenna port grouping information from the terminal device.

S103: The access network device sends the indication information to the terminal device according to the antenna port grouping information, where the indication information is used to indicate the antenna port group set used by the terminal device to perform uplink information transmission at the first moment. The set of antenna port groups includes at least one first antenna port group, and the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information.

Specifically, after the access network device receives the antenna port grouping information sent by the terminal device, the access network device may determine whether the terminal device is suitable for determining whether the terminal device meets the preset condition by determining whether the terminal device meets the preset condition. A collection of antenna port groups sent. Optionally, the access network device may perform channel estimation according to the uplink sounding reference signal sent by the terminal device through each antenna port group, and determine, according to the result of the channel estimation, which channel port group corresponding channel quality is poor or better, and determine the terminal. A part of the antenna port of the device meets a preset condition; optionally, the access network device may further determine, according to the received channel strength of the received demodulation reference signal, which channel quality of the antenna port is poor or better, thereby determining the terminal. Some antenna ports of the device meet the preset conditions. The implementation of the preset conditions in this application is not limited. After the access network device determines that the part of the antenna port of the terminal device meets the preset condition, the access network device may send the indication information to the terminal device according to the antenna port grouping information reported by the terminal device, to notify the antenna port selected by the terminal device. The group is set such that the terminal device uses the first antenna port group in the antenna port group set to perform uplink information transmission when the first time arrives. The set of antenna port groups selected by the access network device includes at least one first antenna port group, the first antenna port group being one of the antenna port groups indicated by the antenna port grouping information. Each of the first antenna port groups in the set of antenna port groups is an antenna port selected by the access network device with high transmission efficiency or the port is not blocked or the beam is not blocked.

Optionally, the first moment may be determined according to a moment when the terminal device receives the indication information. For example, if the terminal device receives the indication information on the time unit n, the first moment may be a time unit n+k. That is, the terminal device performs uplink information transmission in the time unit n+k, and should adopt each first antenna port group in the antenna port group set, so as to prevent the terminal device from continuously transmitting uplink information on the occluded antenna port, thereby improving the terminal device. The uplink information transmission efficiency also reduces the power consumption of the terminal device, wherein the time unit is a predefined basic unit of message validity, and may be a subframe or a time slot or a short time slot composed of one or several symbols (mini-slot) And the like, which are not limited in the present invention.

S104: The terminal device receives the indication information that is sent by the access network device according to the antenna port grouping information.

The method for transmitting information provided by the present application is to report the antenna port grouping information to the access network device by using the terminal device, and the access network device sends the indication information to the terminal device according to the antenna port grouping information, so that the terminal device learns according to the indication information. The network access device selects a set of antenna port groups for the terminal device, and then uses the first antenna port group in the antenna port group set to transmit uplink information when the first time arrives. Since the first antenna port group in the antenna port group set selected by the access network device for the terminal device is an antenna port with high transmission efficiency or the port is not blocked or the beam is not blocked, the terminal device is prevented from continuing to be blocked. The uplink information is sent on the port, which improves the uplink information transmission efficiency of the terminal device and reduces the power consumption of the terminal device.

Optionally, as an optional implementation manner, the terminal device device may further include, in combination with the foregoing antenna port group set for uplink transmission obtained according to the indication information, in combination with each of the first antenna port groups in the antenna port group. The number of antenna ports, the terminal device can calculate the number of antenna ports corresponding to the codebook used for precoding. For example, each antenna port group of the terminal device includes 4 antenna ports, and the access network device indicates that the terminal device has two antenna port groups selected, and the subsequent transmission precoding indication (TPMI) indicates the code of the 8 antenna port. The corresponding codeword.

On the basis of the foregoing embodiment, the indication information may include antenna port selection matrix information, a medium access control control element (MAC CE), and at least one uplink sounding reference signal identifier (Sounding Reference Signal Identify, Any one of the SRIs for short; wherein different antenna port selection matrix information corresponds to different antenna port group sets, different MAC CEs correspond to different antenna port group sets, and different SRIs correspond to different antenna port groups.

Specifically, when the indication information is the MAC CE, the access network device may notify the terminal device to access the set of antenna port groups selected by the network device for the terminal device by using the MAC CE semi-statically or dynamically. For example, an indication of an antenna port group selection result is performed by a bitmap, and the antenna port group selection result is a set of antenna port groups. For example, according to the example given in the above S101, it is assumed that the selection result of the two antenna groups of the antenna is indicated by two bits, and if the indication is 01, the first of the four antenna ports of {4, 5, 6, 7} is selected. The antenna port group performs uplink transmission. If the indication is 10, the first antenna port group consisting of four antenna ports {0, 1, 2, 3} is selected for uplink transmission. Optionally, the number of antenna ports in each antenna port group indicated by the antenna port grouping information reported by the terminal device may be determined by the UE according to an implementation manner. In this case, the antenna ports in one antenna port group may be simultaneously performed by default. Uplink transmission, optionally, can also be configured by the access network device. For example, the access network device configures the terminal device to group the antenna ports by using two antenna ports as a group. In this case, the terminal device reports the antenna port. In addition to the packet information, it is also possible to indicate which antenna port groups can simultaneously perform uplink transmission by introducing an additional indication field. For example, according to the example given in the above S101, the terminal device indicates the antenna port group {0, 1} and { by the indication field. 2, 3} can perform uplink transmission at the same time. Optionally, the number of antenna ports in each antenna port group indicated by the antenna port grouping information may also be predefined by the communication system, and the terminal device also needs to indicate which antenna port group Groups can send uplinks simultaneously.

When the indication information is SRI, the access network device may indicate the set of antenna port groups selected by the access network device for the terminal device by using the SRI for indicating the SRS resource information in the delivered DCI. Optionally, the access network device may configure different SRS resources for different antenna port groups, and different SRS resources have different identifiers (ie, SRIs), or different ports of the same SRS resource may be configured for different antenna port groups. Corresponding resources, the SRS resources corresponding to different antenna ports have different identifiers (ie, SRIs), and when the access network device selects one or more terminal devices from the antenna port group indicated by the antenna port grouping information of the terminal device After the first antenna port group, the access network device sends the SRI corresponding to each of the first antenna port groups to the terminal device through the DCI, so that the terminal device knows which antenna port groups should be used for uplink data when the first time arrives. transmission.

When the indication information is the antenna port selection matrix information, the antenna port selection matrix information may be an explicit antenna port selection matrix W0, or may be an identifier of the W0. The antenna port selection matrix W0 is a matrix of N rows and one column. The partial elements of W0 are 0, and the remaining elements are 1, and N is the number of antenna port groups reported by the terminal device. It should be noted that when the indication information is the antenna port selection matrix, the terminal device needs to sort all the antenna port groups of its own, and it is assumed that the antenna port group {0, 1, 2 is continued according to the example given in S101 above. 3} is the first antenna port group, and {4, 5, 6, 7} is the second antenna port group.

When the antenna port selection matrix information is a direct W0 matrix, the indication information notified by the access network device to the terminal device is a direct W0 matrix, for example, when W0 is

When the first antenna port group is selected, W0 is

Indicates that the second antenna port group is selected. In this case, the antenna port group indicated by the antenna port grouping information reported by the UE is associated with each other, that is, the antenna port corresponding to the antenna port grouping information after the terminal device reports the antenna port grouping information to the access network device. It is determined by selecting a set of matrices that the set of antenna port selection matrices includes a plurality of antenna port selection matrices. For example, if the antenna port grouping information reported by the terminal device indicates that the terminal device has four antenna port groups, and the capability information of the terminal device itself determines that the antenna ports in each antenna port group cannot be simultaneously transmitted, the antenna port grouping information corresponds to The set of antenna port selection matrices can be as follows:

For example, it is assumed that the antenna port grouping information reported by the terminal device indicates that the terminal device has four antenna port groups, and the capability information of the terminal device itself determines that the antenna port groups 1 and 2 can be simultaneously transmitted, and the antenna port groups 3 and 4 can be simultaneously transmitted. The antenna port selection matrix set corresponding to the antenna port grouping information may include the following two in addition to the foregoing four:

Certainly, the W0 in the antenna port selection matrix set may have other various possibilities, for example, four antenna port groups, and 15 types of W0s may be included in the antenna port selection matrix set that may be used, which will not be further described herein.

When the antenna port selection matrix information is the identifier of the W0 matrix, the access network device and the terminal device side predefine the same antenna port matrix set, and perform each antenna port selection matrix in the antenna port selection matrix set. The number or the identifier, so that the access network device can know which one of the corresponding W0 matrices by informing the identifier of the terminal device W0, and then determine the access network device by combining the value of the element or the structure of the element in the W0 matrix. Which first antenna port groups are selected by the terminal device. For example, in the example of the foregoing embodiment, it is assumed that the antenna port grouping information reported by the terminal device indicates that the terminal device has four antenna port groups, and the antenna port selection matrix set may be fixed:

It should be noted that the form of W0 in the present invention is not limited to a column vector, and may be other forms, for example:

The row number or the column number of the element corresponding to the antenna port set is selected. It should be noted that the same matrix design for performing the corresponding functions belongs to the protection scope of the present invention, and details are not described herein again.

The access network device may be numbered for each antenna port selection matrix W0, for example, may be numbered by 4 bits, and carry a W0 identifier in the DCI sent to the terminal device, thereby indicating to the terminal device that the specific W0 is Which one, in turn, causes the terminal device to determine which first antenna port groups to use for uplink transmission according to the W0.

In summary, the access network device can notify the terminal device of the first antenna port group that should be used when the terminal device arrives at the first time by using different types of indication information, and enrich the access network device to indicate to the terminal device. The diversity of an antenna port group.

FIG. 4 is a signaling flowchart of Embodiment 2 of a method for transmitting information provided by the present application. In this embodiment, the access network device not only sends the foregoing indication information to the terminal device, but also sends the precoding matrix information to the terminal device, so that the terminal device can send the data when using the antenna port group set for data transmission. The specific process of precoding the multiplexed data. Based on the foregoing embodiment, the method further includes:

S201: The access network device sends precoding matrix information to the terminal device, where the precoding matrix information is used for determining the precoding matrix W of the terminal device.

S202: The terminal device receives the precoding matrix information sent by the access network device, where the precoding matrix information is used for determining the precoding matrix W of the terminal device.

Specifically, the terminal device needs to use the access network device to perform uplink data transmission for each first-day port group in the selected antenna port group set when the terminal device arrives at the first time, so to suppress inter-layer interference and improve uplink coverage. Or the beamforming gain, the terminal device needs to precode the multiplexed data to be sent, that is, the terminal device needs to know the precoding matrix for precoding.

Therefore, after the access network device sends the indication information to the terminal device, the access network device sends the precoding matrix information to the terminal device, and the terminal device can obtain the precoding matrix required by the terminal device according to the precoding matrix information.

Before introducing the precoding matrix W provided by the present application, the matrix W ₁ and the matrix W ₂ related to the precoding matrix W in the following embodiments will be described. The matrix W _{1 is} used to represent the phase correlation between the different first antenna port groups, and the matrix W ₂ is the first precoding matrix w corresponding to the first antenna port group. It should be noted that the antenna port group set is included. The first precoding matrix w corresponding to each of the first antenna port groups is the same.

Optionally, in this embodiment, W ₁ =A,

Where K is the number of the first antenna port group in the antenna port group,

A phase correlation factor between the kth first antenna port group and the first first antenna port group. Matrix W ₂ = w, optionally, each column in w is

One of the column vectors, N is the number of antenna ports included in each antenna port group. Optionally, each column in w can also be

One of the column vectors, N is the number of antenna ports included in each antenna port group, and O is an oversampling factor, which is an integer greater than or equal to 1, and can be configured by the access network device to the terminal device through downlink signaling. Optionally, w can also correspond to the one in Table 1.

(Table 1 shows the first precoding matrix w corresponding to the first antenna port group of a 4-antenna port, and the other antenna port numbers are generated using a similar structure), wherein

Indicates that the first precoding matrix w can be defined as

The column number corresponding to each element in the set {s} is extracted, where I is a unit matrix of 4 rows and 4 columns, and u _n is given in the second column of Table 1. Optionally, w may also correspond to the codebook table in 5.GPP A. 36.211-c50. 5.3.3A.2-1, 5.3.3A.2-2, 5.3.3A.2-3, 5.3.3A.2-4 , a precoding vector in 5.3.3A.2-5.

Table 1 is a first precoding matrix corresponding to a first antenna port group of an antenna port

Based on the above description of the matrix W ₁ and the matrix W ₂ , several possible implementations of the above precoding matrix information are respectively described below:

As a first possible embodiment of the present embodiment, the precoding matrix information comprises: a first transmission matrix W and the precoding matrix TPMI matrix W _{_2. 1} of a second TPMI.

Specifically, after the access network device is a set of antenna port groups selected by the terminal device, the access network device performs channel estimation based on the reference signal corresponding to the antenna port group set, and obtains a channel estimation result H corresponding to the antenna port group set, and utilizes H from the first access network device a predetermined codebook (codebook is on a first matrix W ₁ and a first correspondence relationship TPMI codebook) and the second codebook (a second codebook is a matrix W ₂ and about The matrix W ₁ and the matrix W ₂ are respectively determined in the codebooks of the two TPMI correspondences. For example, the access network device may determine the SVD decomposition after the channel matrix H is multiplied according to the matrix W ₁ and the matrix W ₂ . The closest multiplication result of the unitary matrix is then determined to determine the closest multiplication result to determine the matrix W ₁ and the matrix W ₂ , thereby determining the first TPMI and the second TPMI.

Thereafter, the access network device the first matrix W TPMI ₁ and a second matrix W TPMI ₂ informs the terminal device, since the common side of the access network device and the terminal device first codebook and a second codebook, and therefore, the terminal when receiving the first and second TPMI TPMI, binding indication information received prior to know the number of antenna ports for transmitting the group, W may be determined the number of rows _1, and known from the first codebook to find a first TPMI, which in turn obtains the matrix W ₁ ; on the other hand, since the terminal device knows the number of antenna ports in the first antenna port group, combining the number of antenna ports in the first antenna port group, finding the second number under the number The codebook is then combined with the second TPMI to find the matrix W ₂ from the codebook, and the terminal device can calculate the precoding matrix W according to the matrices W ₁ and W ₂ and the corresponding formula. Optionally, the “corresponding formula” mentioned herein may be that the access network device is notified to the terminal device by using a high-level message, for example, may be explicitly sent through an RRC message or a MAC CE message, or may be explicitly displayed through a physical layer message. The sent may also be predefined by the access network device and the terminal device. The present application does not limit how the terminal device learns the formula for calculating the precoding matrix W. Alternatively, the formula can be

It can also be W = W ₁ × W ₂ .

Optional, when

When the formula is a Kronecker product, the number of rows of W ₁ is equal to the number of first antenna port groups in the set of antenna port groups, and the number of rows of W ₂ is equal to the first antenna The total number of antenna ports in the port group, the number of columns of the W ₁ is 1, and the number of columns of the W ₂ is the number of transmission layers between the access network device and the terminal device.

Optionally, when W=W ₁ ×W ₂ , the optional mode, here

which is,

Where I _N is the identity matrix of dimension N, the same as W ₂ and W _2. The number of rows of W ₁ is equal to the total number of all antenna ports in the set of antenna port groups, and the number of rows of W ₂ is equal to the total number of antenna ports in the first antenna port group, and the column of W ₁ The number is the total number of antenna ports in the first antenna port group, and the number of columns of the W ₂ is the number of transmission layers between the access network device and the terminal device.

In summary, in the embodiment, the terminal device can obtain the precoding matrix W to be used by the terminal device by using the matrix W ₁ indicated by the first TPMI and the matrix W ₂ indicated by the second TPMI, and the calculated row of W The number is equal to the total number of all antenna ports in the set of antenna port groups, and the number of rows of the W is equal to the number of transmission layers between the access network device and the terminal device

Alternatively, application of the present embodiment, the first TPMI precoding indication may be a broadband transmission, the terminal device can be characterized using the first TPMI corresponding W ₁ over the entire band, and the second also for broadband TPMI The transmission precoding indication indicates that the terminal device can use W ₁ corresponding to the first TPMI over the entire frequency band.

Optionally, the TPMI first indication may be a broadband transmit precoder, the second TPMI TPMI subbands, the subband TPMI W is used to indicate the subbands used by the terminal device _2, i.e., different sub- The W ₂ used to bring the terminal device may be different.

Optionally, the first TPMI may indicate subband precoding transmission, is used to indicate the subband TPMI the subbands used by the terminal apparatus W _1, W sub-band that is different from the terminal equipment used ₁ may be different, the second TPMI is a wideband TPMI, and the terminal device can use the W ₂ corresponding to the second TPMI for the entire frequency band.

As a second possible implementation manner of this embodiment, the precoding matrix information includes: a fourth TPMI of the matrix W _P , where the fourth TPMI is used to represent phase correlation between different first antenna port groups The matrix W ₁ and the matrix W ₂ of the first precoding matrix w corresponding to the first antenna port group are the same, and the first precoding matrix w corresponding to each first antenna port group is the same. The number of rows of the W _P is equal to the total number of all antenna ports in the set of antenna port groups, and the number of rows of the W _P is equal to the number of transmission layers between the access network device and the terminal device.

Specifically, in this embodiment, the access network device and the terminal device share a new codebook, and the new codebook is the codebook provided by the application. After the access network device selects the antenna port group set selected by the terminal device, the access network device performs channel estimation based on the reference signal corresponding to the antenna port group set, and obtains a channel estimation result H corresponding to the antenna port group set, and uses the H Determining W _P in a new codebook preset by the access network device, for example, the access network device may select, from the new codebook, a SVD-decomposed 酉 matrix closest to the channel matrix H according to the channel estimation result H. A matrix, as W _P , to determine the fourth TPMI corresponding to W _P .

Then, the access network device informs the terminal device of the fourth TPMI of the matrix W _P. Since the access network device and the terminal device side share the new codebook, the terminal device receives the fourth TPMI and combines the previous reception. The incoming indication information knows the number of antenna port groups used for transmission, can determine the number of rows of W _P , and then knows to find the fourth TPMI from the above new codebook, thereby obtaining the matrix W _P .

Optionally, in this embodiment,

In this case,

Or, W _p = W ₁ × W ₂ , in this case,

Wherein, the contents of the matrix W ₁ and the matrix W ₂ are the same as the first possible implementation described above, and the W _P =W. What is reflected in the above new codebook is the correspondence between W _P and the fourth TPMI, here

Alternatively, W _p = W ₁ × W ₂ represents only two different splitting methods of W _p , and the present application is not limited thereto.

In the method for transmitting information provided by the application, the access network device informs the terminal device to determine precoding matrix information of the precoding matrix W, and the phase correlation between different first antenna port groups is considered in the precoding matrix information. The inter-layer interference suppression capability of the terminal device using the precoding matrix W for uplink data transmission is improved. In addition, the access network device does not need to transmit a direct precoding matrix W to the terminal device, but the terminal device according to the precoding matrix. The information is calculated, which saves the air interface overhead of transmitting the precoding matrix. In addition, for the first possible implementation manner, since the uplink in the 5G system supports multi-carrier transmission, and it may support more than 100M bandwidth, there will be a frequency. For the selective fading problem, the TPMI indication in the downlink DCI of the existing LTE is full bandwidth indication information, that is, the entire frequency band adopts a precoding matrix. In this application, the frequency selection characteristics in the 5G system are considered, and different TPMIs are adopted. Subband transmission, different precoding matrices can be used in different frequency bands in the 5G system, which greatly satisfies the 5G system Demand for data transmission.

FIG. 5 is a signaling flowchart of Embodiment 3 of a method for transmitting information provided by the present application. The embodiment relates to a specific process of reporting, by the terminal device, the antenna port group information to the access network device, so that the access network device sends the TPMI of the precoding matrix W used by the terminal device to perform uplink data transmission to the terminal device. . As shown in FIG. 5, the method includes the following steps:

S301: The terminal device sends antenna port grouping information to the access network device, where the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group.

S302: The access network device receives the antenna port grouping information sent by the terminal device.

For details of the S301 and S302, refer to the specific processes of S101 and S102 in the foregoing Embodiment 1, and details are not described herein again.

S303: The access network device sends a transmission precoding matrix indication TPMI of the precoding matrix W to the terminal device.

The W is a first precoding matrix w corresponding to the first antenna port group in the antenna port group set, a phase correlation between different first antenna port groups, and a precoding matrix related to the antenna antenna port set. The antenna port group set includes at least one first antenna port group, the first antenna port group is one of antenna port groups indicated by the antenna port group information, and each first antenna port group corresponds to a first A precoding matrix w is the same. The number of rows of the W is equal to the sum of the number of antenna ports of the terminal device, and the number of columns of the W is equal to the number of transmission layers between the access network device and the terminal device.

S304: The terminal device receives a transmission precoding matrix indication TPMI of the precoding matrix W sent by the access network device.

Specifically, after the access network device receives the antenna port grouping information, the access network device may determine whether the terminal device selects an antenna suitable for sending by determining whether a part of the antenna port of the terminal device meets a preset condition. Port group collection. For the description of the preset condition and the selection process of the antenna port group set, refer to the description of S103 above, and details are not described herein again.

It should be noted that, in this embodiment, the access network device and the terminal device share a new codebook, and the new codebook is the codebook provided by the application, and all precoding matrices in the codebook are considered. The access network device performs a first antenna port group selection for the terminal device, a phase correlation between each selected first antenna port group, and a precoding matrix corresponding to each first antenna port group, and each of the codebooks The matrices correspond to a TPMI.

The access network device performs channel estimation based on the reference signal sent by the terminal device, and obtains a channel estimation result H corresponding to the set of all antenna port groups, and uses the H to determine W from a new codebook preset by the access network device, for example, The access network device may select a matrix from the new codebook that is closest to the SVD-decomposed 酉 matrix of the channel matrix H according to the channel estimation result H, and determine the TPMI corresponding to W.

After that, the access network device informs the terminal device of the TPMI of the W. Since the access network device and the terminal device side share the new codebook, the terminal device receives the TPMI of W from the new codebook. Find the TPMI of W and get the matrix W.

Optionally, the precoding matrix W can also be written as

The contents of the matrix W ₁ and the matrix W ₂ are the same as the first possible implementation manner described above, and the W ₀ is the antenna port selection matrix. In this way,

It should be noted,

Each matrix in the matrix represents only a splitting manner of W. The present application is not limited thereto. The new codebook in this embodiment reflects the correspondence between W and W TPMI, that is, the last is embodied. The correspondence between the result of multiplication and the TPMI of W.

The method for transmitting information provided by the application, the access network device informing the terminal device to determine the TPMI of the precoding matrix W, because the precoding matrix W considers the occlusion of different first antenna port groups and different first antenna port groups. The phase correlation between the two increases the inter-layer interference suppression capability of the terminal device using the precoding matrix W for uplink data transmission, and improves the power efficiency of the uplink transmission.

FIG. 6 is a signaling flowchart of Embodiment 4 of a method for transmitting information provided by the present application. The embodiment relates to the terminal device reporting the antenna port grouping information to the access network device, so that the access network device sends the precoding matrix information to the terminal device, so that the terminal device determines that the terminal device is performing uplink according to the precoding matrix information. The specific process of the precoding matrix W required for data transmission. As shown in FIG. 6, the method includes the following steps:

S401: The terminal device sends antenna port grouping information to the access network device, where the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group. Or, comprising information of at least one antenna port group of the terminal device and information of an antenna port of the terminal device.

The terminal device reports the antenna port grouping information to the access network device, where the antenna port grouping information may include information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, that is, the terminal device notifies How many antenna port groups are present on the access network device terminal device, and each antenna port group has several antenna ports, or the antenna port group information may include information and total of at least one antenna port group of the terminal device. The number of antenna ports, the access network device can obtain the information of the antenna ports included in each antenna port group according to the information of the total number of antenna ports and the information of the antenna port group.

S402: The access network device receives the antenna port grouping information sent by the terminal device.

For details, refer to the description of S101-S102 in the above-mentioned first embodiment, and details are not described herein again.

S403: TPMI access network device indicating a second TPMI matrix W ₂ and a pre-coding matrix to a first transmission terminal apparatus transmits the _X matrix W, said W _X for characterizing the access network device from the at least Selecting a selection factor of the antenna port group set and a phase correlation between the different first antenna port groups in the antenna port group set in the antenna port group, where W ₂ is the first pre-corresponding to the first antenna port group The encoding matrix w is the same as the first precoding matrix w corresponding to each first antenna port group, and the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information. Determining the first TPMI and the second TPMI for the precoding matrix W

The access network device performs channel estimation based on the reference signal sent by the terminal device, and obtains a channel estimation result H corresponding to the set of all antenna port groups, and uses the H to preset the first codebook from the access network device (the first codebook is about The matrix W _x and the codebook of the first TPMI correspondence relationship and the second codebook (the second codebook is a codebook relating to the correspondence between the matrix W ₂ and the second TPMI) respectively determine the matrix W _x and the matrix W ₂ , for example The access network device may determine the closest multiplication result of the SVD-decomposed 酉 matrix with the channel matrix H according to the result of multiplying the matrix W _x and the matrix W ₂ , and then determine the closest multiplication result determination. The matrix W _x and the matrix W _{2 are} derived, thereby determining the first TPMI and the second TPMI. Thereafter, the first access network device TPMI matrix and a second matrix W W _x TPMI ₂ informs the terminal device.

S404: The terminal device receives the first TPMI of the matrix W _x and the second TPMI of the matrix W ₂ sent by the access network device.

The access device and the terminal device share the first codebook and the second codebook. After receiving the first TPMI and the second TPMI, the terminal device may find the first TPMI from the first codebook, and obtain the first TPMI. Matrix W _x ; At the same time, the second TPMI is found from the second codebook, and the matrix W _{2 is} obtained. Finally, the terminal device can calculate the precoding matrix W based on the matrices W ₁ and W ₂ and the corresponding formulas. For an explanation of the formula, reference can be made to the description in the above method embodiment.

Optional,

The number of rows of W is equal to the sum of the number of antenna ports of the terminal device, and the number of columns of W is equal to the number of transmission layers between the access network device and the terminal device, where W _x is a column vector, and the corresponding number of rows is the antenna port group. The number of first antenna port groups in the set, the non-zero element modulus is 1, and the number of non-zero elements indicates the number of selected first antenna port groups for uplink transmission, W ₂ =w.

Optionally, in the embodiment of the present application, the first TPMI may be a broadband transmission precoding indication, and the terminal device may use the W _x corresponding to the first TPMI in the entire frequency band, and the second TPMI is also a broadband. The transmission precoding indication indicates that the terminal device can use W ₂ corresponding to the first TPMI over the entire frequency band.

Optionally, the first TPMI may indicate subband precoding transmission, which is used to indicate the subband TPMI W _X subbands used by the terminal device, that is, different subbands used by the terminal device W _{The x} may be different. The second TPMI is a wideband TPMI, and the terminal device can use the W ₂ corresponding to the second TPMI for the entire frequency band.

The method for transmitting information provided by the application, the access network device informing the terminal device to determine the first TPMI and the second TPMI of the precoding matrix W, since the W _x corresponding to the first TPMI considers different first antenna port groups The phase correlation between the two increases the inter-layer interference suppression capability of the terminal device using the precoding matrix W for uplink data transmission. In addition, the access network device does not need to transmit the direct precoding matrix W to the terminal device, but is instead terminated by the terminal. The device calculates the precoding matrix information, which saves the air interface overhead of transmitting the precoding matrix.

Another embodiment of the present application further provides a method for transmitting information, where the access network device does not select a set of antenna port groups for the terminal device, and the method is specifically:

The terminal device reports the antenna port grouping information to the access network device (this packet information tells the access network device by default, the antenna ports in the same antenna port group are simultaneously transmitted), and the access network device is based on the antenna port grouping information. The reference signal corresponding to the indicated antenna port group performs channel estimation, and obtains a channel estimation result H corresponding to the antenna port group indicated by the antenna port group information. In this embodiment, the access network device and the terminal device share two codebooks, which are a first codebook and a second codebook, respectively. The first codebook is a correlation matrix W _m corresponding to the phase relationship between the first TPMI, different from the above embodiment, the number of rows in W _m in the present embodiment is equal to the number of antenna ports and the terminal device all groups. Second codebook is W ₂ and the second corresponding relationship between the TPMI, W ₂ where the number of antenna ports in a port group corresponding to the existing antenna codebook matrix w ", i.e. second codebook existing code this.

Therefore, the access network device can determine the matrix W _m and the matrix W ₂ from the preset first codebook and the second codebook by using the H, for example, the access network device can be based on the matrix W _m and the matrix W. ₂ multiplying the result, determining the closest multiplication result of the SVD-decomposed 酉 matrix with the channel matrix H, and then determining the closest multiplication result to determine the matrix W _m and the matrix W ₂ , thereby determining the first TPMI And the second TPMI.

Thereafter, the matrix W _m TPMI first and second matrix W TPMI access network ₂ informs the terminal device, since the common side of the access network device and the terminal device first codebook and a second codebook, and therefore, the terminal device may be determined based on the first and second TPMI TPMI matrix and the matrix W _m W _2, and W ₂ further ₁ according to the formula and the corresponding matrix W, it is possible to calculate the precoding matrix W. Optionally, the explanation of the “corresponding formula” mentioned herein may participate in the description in the above embodiments, and details are not described herein again.

Optional,

W _m is equal to A in the foregoing embodiment, and W ₂ is w in the foregoing embodiment.

Optionally, in the embodiment of the present application, the first TPMI may be a broadband transmission precoding indication, and the terminal device may use the W _m corresponding to the first TPMI in the entire frequency band, and the second TPMI is also a broadband. The transmission precoding indication indicates that the terminal device can use W ₂ corresponding to the first TPMI over the entire frequency band. Optionally, the TPMI first indication may be a broadband transmit precoder, the second TPMI TPMI subbands, the subband TPMI W is used to indicate the subbands used by the terminal device _2, i.e., different sub- The W ₂ used to bring the terminal device may be different.

Optionally, the foregoing first TPMI may be a precoding indication of a subband transmission, where the subband TPMI is used to indicate a W _m used by the terminal device on the subband, that is, a possible use by the terminal device on different subbands. Different W _m , the second TPMI is a wideband TPMI, and the terminal device can use the W ₂ corresponding to the second TPMI for the entire frequency band.

As can be seen from the above description, the W provided by the present application considers the phase correlation between each antenna port group of the terminal device, so that the terminal device uses the W to precode the uplink data, and the interlayer interference suppression effect is better. .

According to the foregoing method, as shown in FIG. 7, an embodiment of the present invention further provides an apparatus for information transmission, which may be a wireless device 10. The wireless device 10 can correspond to a terminal device in the above method.

The apparatus can include a processor 110 and a memory 120. Further, the apparatus may further include a receiver 140 and a transmitter 150. Further, the apparatus may further include a bus system 130, wherein the processor 110, the memory 120, the receiver 140, and the transmitter 150 may be connected by the bus system 130.

The memory 120 is configured to store instructions for executing the instructions stored by the memory 120 to control the receiver 140 to receive signals and to control the transmitter 150 to transmit signals to perform the steps of the user equipment in the above method. The receiver 140 and the transmitter 150 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation, the functions of the receiver 140 and the transmitter 150 can be implemented by a dedicated chip through a transceiver circuit or a transceiver. The processor 110 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.

As another implementation manner, a wireless device provided by an embodiment of the present invention may be implemented by using a general-purpose computer. The program code that is to implement the functions of the processor 110, the receiver 140 and the transmitter 150 is stored in a memory, and the general purpose processor implements the functions of the processor 110, the receiver 140 and the transmitter 150 by executing the code in the memory.

For the concepts, explanations, detailed descriptions and other steps related to the technical solutions provided by the embodiments of the present invention, refer to the descriptions of the foregoing methods or other embodiments, and no further details are provided herein.

FIG. 8 provides a schematic structural diagram of a terminal device. The terminal device can be adapted for use in the system shown in FIG. For ease of illustration, Figure 8 shows only the main components of the user equipment. As shown in FIG. 8, the terminal device 10 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to perform the actions described in the FIG. The memory is primarily used to store software programs and data, such as the codebooks described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.

After the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When the data needs to be transmitted by wireless, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves. When data is sent to the user equipment, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.

Those skilled in the art will appreciate that FIG. 8 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like.

As an optional implementation, the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process communication protocols and communication data, and the central processing unit is mainly used to control and execute the entire user equipment. A software program that processes data from a software program. The processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network standards, and the user device may include a plurality of central processors to enhance its processing capabilities, and various components of the user devices may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

Illustratively, in the embodiment of the invention, the antenna and control circuit having the transceiving function can be regarded as the transceiving unit 101 of the terminal device 10, and the processor having the processing function can be regarded as the processing unit 102 of the terminal device 10. As shown in FIG. 8, the terminal device 10 includes a transceiver unit 101 and a processing unit 102. The transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like. Optionally, the device for implementing the receiving function in the transceiver unit 101 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 101 is regarded as a sending unit, that is, the transceiver unit 101 includes a receiving unit and a sending unit. The receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit.

According to the foregoing method, as shown in FIG. 9, the embodiment of the present invention further provides another apparatus for information transmission, and the apparatus may be a wireless device 20, and the wireless device 20 corresponds to an access network device in the foregoing method. The apparatus can include a processor 210 and a memory 220. Further, the device may further include a receiver 240 and a transmitter 250. Still further, the apparatus can also include a bus system 230.

The processor 210, the memory 220, the receiver 240 and the transmitter 250 are connected by a bus system 230 for storing instructions for executing instructions stored in the memory 220 to control the receiver 240 to receive. Signaling, and controlling the transmitter 250 to transmit a signal, completes the steps of the first wireless network device in the above method. The receiver 240 and the transmitter 250 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation, the functions of the receiver 240 and the transmitter 250 can be implemented by a dedicated chip through a transceiver circuit or a transceiver. The processor 210 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.

As another implementation manner, a wireless device provided by an embodiment of the present invention may be implemented by using a general-purpose computer. The program code that is to implement the functions of the processor 210, the receiver 240 and the transmitter 250 is stored in a memory, and the general purpose processor implements the functions of the processor 210, the receiver 240, and the transmitter 250 by executing code in the memory.

For the concepts, explanations, detailed descriptions and other steps related to the technical solutions provided by the embodiments of the present invention, refer to the descriptions of the foregoing methods or other embodiments, which are not described herein.

According to the foregoing method, as shown in FIG. 10, the embodiment of the present invention further provides a schematic structural diagram of an access network device, such as a base station.

The base station can be applied to the system as shown in FIG. The base station 20 includes one or more radio frequency units, such as a remote radio unit (RRU) 201 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 202. . The RRU 201 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 2011 and a radio frequency unit 2012. The RRU 201 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting signaling indications and/or reference signals described in the foregoing embodiments to user equipment. The BBU 202 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 201 and the BBU 202 may be physically disposed together or physically separated, that is, distributed base stations.

The BBU 202 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, and the like. For example, the BBU (processing unit) can be used to control the base station to execute the flow shown in FIG.

In an example, the BBU 202 may be composed of one or more boards, and multiple boards may jointly support a single access standard radio access network (such as an LTE network), or may separately support different access modes of wireless. Access Network. The BBU 202 also includes a memory 2021 and a processor 2022. The memory 2021 is used to store necessary instructions and data. For example, the memory 2021 stores the correspondence between the information of the transmission delay difference and the transmission delay difference in the above embodiment. The processor 2022 is configured to control the base station to perform necessary actions, such as for controlling the actions of the base station as shown in the portion of FIG. The memory 2021 and the processor 2022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.

According to the method provided by the embodiment of the present invention, the embodiment of the present invention further provides a communication system, which includes the foregoing access network device and one or more terminal devices.

It should be understood that, in the embodiment of the present invention, the processor may be a central processing unit ("CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration. Circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory.

The bus system may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

It is also to be understood that the first, second, third, fourth,

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. achieve. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A method for transmitting information, comprising:

Receiving antenna port grouping information from the terminal device; the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal Information of at least one antenna port group of the device and information of an antenna port of the terminal device;

Sending indication information to the terminal device according to the antenna port grouping information, where the indication information is used to indicate an antenna port group set used by the terminal device to perform uplink information transmission at a first moment, where the antenna port group set includes At least one first antenna port group, the first antenna port group being one of the antenna port groups indicated by the antenna port grouping information.
The method of claim 1 further comprising:

The access network device sends precoding matrix information to the terminal device, and the precoding matrix information is used for determining the precoding matrix W of the terminal device.
A method for transmitting information, comprising:

Transmitting antenna port grouping information to the access network device; the antenna port grouping information includes information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal device Information of at least one antenna port group and information of an antenna port of the terminal device;

Receiving indication information from the access network device; the indication information is used to indicate an antenna port group set used by the terminal device to perform uplink information transmission at a first moment, where the antenna port group set includes at least one first An antenna port group, the first antenna port group being one of the antenna port groups indicated by the antenna port grouping information.
The method of claim 3, wherein the method further comprises:

Receiving precoding matrix information sent by the access network device, where the precoding matrix information is used for determining the precoding matrix W of the terminal device.
The method according to any one of claims 1 to 4, wherein the precoding matrix information comprises: a first transmission matrix W 1 TPMI precoding matrix and a second matrix W TPMI 2, wherein the W 1 For characterizing the phase correlation between different first antenna port groups, the W 2 is a first precoding matrix w corresponding to the first antenna port group, and the first pre-corresponding to each first antenna port group The coding matrix w is the same, and the first TPMI and the second TPMI are used for the determination of the precoding matrix W.
The method of claim 5 wherein said said
Said
Wherein K is the number of the first antenna port group in the set of antenna port groups,
a phase correlation factor between the kth first antenna port group and the first first antenna port group, where k has a value range of [1, K-1]; the number of rows of the W 1 is equal to the antenna The number of the first antenna port group in the port group set, the number of rows of the W 2 is equal to the total number of antenna ports in the first antenna port group, and the number of columns of the W 1 is 1, the W 2 The number of columns is the number of transmission layers between the access network device and the terminal device.
The method of claim 5 wherein said said
The W is W 1 × W 2 ; wherein the I N is a unit array of N rows and N columns, the N is the number of antenna ports in the first antenna port group, and the K is the antenna The number of first antenna port groups in the port group set,
A phase correlation factor between the k-th antenna of the first group and the first port a first antenna port group, k is in the range [1, K-1, the number of rows equal to 1 W antenna port group set The total number of all the antenna ports, the number of rows of the W 2 is equal to the total number of antenna ports in the first antenna port group, and the number of columns of the W 1 is the antenna port of the first antenna port group. The total number of the W 2 columns is the number of transmission layers between the access network device and the terminal device.
The method according to any one of claims 1 to 4, wherein the precoding matrix information comprises: a fourth transmission precoding matrix TPMI of a matrix W P , the fourth TPMI being used to represent different first W phase correlation matrix between the antenna port group 1 and equal to the first antenna port corresponding to a first set of precoding matrix w matrix W 2, each first port set corresponding to a first antenna precoding matrix w the same;

The number of rows of the W P is equal to the total number of all antenna ports in the set of antenna port groups, and the number of rows of the W P is equal to the number of transmission layers between the access network device and the terminal device.
The method according to any one of claims 1-8, wherein the indication information comprises at least one of antenna port selection matrix information, a medium access control unit MAC CE, and at least one uplink sounding reference signal resource identifier SRI. The different antenna port selection matrix information corresponds to different antenna port group sets, different MAC CEs correspond to different antenna port group sets, and different SRIs correspond to different antenna port groups.
The method of claim 9, wherein the antenna port selection matrix information comprises an antenna port selection matrix or an identification of the antenna port selection matrix.
The method according to claim 9 or 10, wherein the antenna port selection matrix is a matrix of N rows and one column, and some elements in the antenna port selection matrix are 0, and the remaining elements are 1, and the N is The number of antenna port groups reported by the terminal device.
The method according to claim 4, wherein the first TPMI is a broadband transmission precoding indication, and the second TPMI is a broadband transmission precoding matrix indication;

or,

The first TPMI is a broadband transmission precoding matrix indication, the second TPMI is a subband TPMI, and the subband TPMI is used to indicate W 2 used by the terminal device on the subband;

or,

The first TPMI is a transmission precoding matrix indication of a subband, and the second TPMI is a wideband transmission precoding matrix indication.
A method for transmitting information, comprising:

Receiving antenna port grouping information from the terminal device, the antenna port grouping information including information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal Information of at least one antenna port group of the device and information of an antenna port of the terminal device;

Transmitting a precoding matrix indicating a TPMI of the precoding matrix W to the terminal device;

The W is a precoding matrix related to a first precoding matrix w corresponding to a first antenna port group in the antenna port group set, and a phase correlation degree between different first antenna port groups, the antenna The port group set includes at least one first antenna port group, the first antenna port group is one of the antenna port groups indicated by the antenna port group information, and the first precoding matrix corresponding to each first antenna port group w is the same;

The number of rows of the W is equal to the sum of the number of antenna ports of the terminal device, and the number of columns of the W is equal to the number of transmission layers between the access network device and the terminal device.
A method for transmitting information, comprising:

Transmitting antenna port grouping information to the access network device, the antenna port grouping information including information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal device Information of at least one antenna port group and information of an antenna port of the terminal device;

The terminal device receives a transmission precoding matrix indication TPMI from a precoding matrix W of the access network device, where the W is a first precoding matrix corresponding to a first antenna port group in the antenna port group set And a precoding matrix related to phase correlation between different first antenna port groups, the antenna port group set including at least one first antenna port group, the first antenna port group being the antenna port grouping One of the antenna port groups indicated by the information, and the first precoding matrix w corresponding to each of the first antenna port groups is the same;

The number of rows of the W is equal to the sum of the number of antenna ports of the terminal device, and the number of columns of the W is equal to the number of transmission layers between the access network device and the terminal device.
A method for transmitting information, comprising:

Receiving antenna port grouping information from the terminal device, the antenna port grouping information including information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal Information of at least one antenna port group of the device and information of an antenna port of the terminal device;

And a second matrix W indicates TPMI TPMI transmission 2 to the first pre-coding matrix transmits the terminal device X matrix W, and W X the access network device for characterizing said at least one selected from the group antenna port a selection factor of the antenna port group set and a phase correlation between different first antenna port groups in the antenna port group set, where W 2 is a first precoding matrix w corresponding to the first antenna port group, and each The first precoding matrix w corresponding to the first antenna port group is the same, the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information, the first TPMI and the second TPMI Used for the determination of the precoding matrix W.
A method for transmitting information, comprising:

Transmitting antenna port grouping information to the access network device, the antenna port grouping information including information of at least one antenna port group of the terminal device and information of at least one antenna port included in each antenna port group, or the terminal device Information of at least one antenna port group and information of an antenna port of the terminal device;

Receiving, by the first transmission precoding matrix of the matrix W x of the access network device, a TPMI and a second TPMI of the matrix W 2 , the W x being used to characterize the access network device from the at least one antenna port Selecting a selection factor of the set of antenna port groups in the group and a phase correlation between different first antenna port groups in the set of antenna port groups, where W 2 is a first precoding matrix corresponding to the first antenna port group a first precoding matrix w corresponding to each first antenna port group is the same; the first antenna port group is one of the antenna port groups indicated by the antenna port grouping information, the first TPMI and the The second TPMI is used for the determination of the precoding matrix W.
A method according to claim 15 or 16, wherein said said
The number of rows of the W x is equal to the number of the first antenna port groups in the set of antenna port groups, the number of columns of the W x is 1, and the number of rows of the W 2 is equal to the first antenna port. The total number of antenna ports in the group, where the number of columns of W 2 is the number of transmission layers between the access network device and the terminal device; and the M elements in the W x are complex numbers of modulo 1, The remaining elements are 0, and the M is the number of the first antenna port groups in the set of antenna port groups.
The method according to claim 15 or 16, wherein said W = W x × W 2 , wherein said number of rows of W x is equal to a total number of all antenna ports of said terminal device, said The number of columns of W x is equal to the total number of antenna ports in the first antenna port group, the number of rows of W 2 is equal to the total number of antenna ports in the first antenna port group, and the column of W 2 the number of bonding layers between the transmission device and the network terminal device; same for all elements in the same row of the W x, W x M elements of the rows in the range of 1 modulo complex, The element corresponding to the remaining part of the row is 0, and the M is the number of the first antenna port group in the set of antenna port groups.
An apparatus, comprising: a processor coupled to a memory,

The processor is configured to execute a program or instruction stored by the memory, the apparatus for performing the method of any one of claims 1 to 18 when the processor executes the instruction stored by the memory.
A device for performing the method according to any one of claims 1 to 18.
A readable storage medium, comprising a program or an instruction, the method of any one of claims 1 to 18 being executed when the program or instruction is run on a computer.
A computer program product, comprising computer program code for causing a computer to perform the method of any one of claims 1 to 18 when the computer program code is run on a computer.