Method, apparatus, terminal and network-side device for transmitting channel state information

Abstract

The application discloses a channel state information transmission method, device, terminal and network side equipment, and belongs to the communication technical field. The channel state information transmission method is executed by a terminal and comprises the following steps: reporting channel state information to a network side equipment, wherein the channel state information comprises a first part and a second part, the first part comprises the total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part comprises at least a second group, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, and m and n are positive integers. The technical scheme of the embodiment of the application can guarantee the precoding effect of the network side equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a channel state information transmission method and device, a terminal and a network side device. BACKGROUND

[0002] Compared with the previous mobile communication system, the 5th Generation mobile communication (5G) system needs to adapt to more diversified scenarios and service requirements. For example, the main application scenarios of the 5G system include enhanced mobile broadband (eMBB), massive machine type of communication (mMTC) and ultra reliable & low latency communication (uRLLC) services, which put forward requirements of high reliability, low latency, large bandwidth and wide coverage for the 5G system.

[0003] The channel state information (CSI) can make the communication system CSI adapt to the current channel conditions, and provide high reliability and high speed communication in a multi-antenna system. The reported content includes rank indication (RI), channel quality indicator (CQI), layer indication (LI), precoding matrix indicator (PMI), etc., and the accuracy of the PMI will affect the effect of network side device precoding. SUMMARY

[0004] The embodiments of the present application provide a channel state information transmission method and device, a terminal and a network side device, which can ensure the effect of network side device precoding.

[0005] In a first aspect, the embodiments of the present application provide a channel state information transmission method, which is executed by a terminal and includes the following steps.

[0006] Reporting channel state information to a network side device, the channel state information including a first part and a second part, the first part including the total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part including at least a second group, the second group including non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, m and n being positive integers.

[0007] In a second aspect, the embodiments of the present application provide a channel state information transmission method, executed by a network side device, comprising:

[0008] receiving channel state information reported by a terminal, wherein the channel state information comprises a first part and a second part, the first part comprises a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprises at least a second group, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers.

[0009] In a third aspect, the embodiments of the present application provide a channel state information transmission apparatus, applied to a terminal, comprising:

[0010] a reporting module, configured to report channel state information to a network side device, wherein the channel state information comprises a first part and a second part, the first part comprises a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprises at least a second group, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers.

[0011] In a fourth aspect, the embodiments of the present application provide a channel state information transmission apparatus, applied to a network side device, comprising:

[0012] a receiving module, configured to receive channel state information reported by a terminal, wherein the channel state information comprises a first part and a second part, the first part comprises a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprises at least a second group, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers.

[0013] In a fifth aspect, a terminal is provided, comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, when the program or instructions are executed by the processor, the steps of the method according to the first aspect are implemented.

[0014] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is configured to measure a positioning reference signal (PRS), and the communication interface is configured to report channel state information (CSI) to a network side device, the CSI comprising a first part and a second part, the first part comprising a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprising at least a second group, the second group comprising non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, m and n being positive integers.

[0015] In a seventh aspect, a network side device is provided, comprising a processor, a memory, and a program or instructions stored in the memory and executable in the processor, the program or instructions being executed by the processor to implement the steps of the method according to the second aspect.

[0016] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is configured to receive channel state information (CSI) reported by a terminal, the CSI comprising a first part and a second part, the first part comprising a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprising at least a second group, the second group comprising non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, m and n being positive integers.

[0017] In a ninth aspect, a readable storage medium is provided, the readable storage medium storing a program or instructions, the program or instructions being executed by a processor to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect.

[0018] In a tenth aspect, a chip is provided, comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect.

[0019] In an eleventh aspect, a computer program / program product is provided, the computer program / program product being stored in a non-volatile storage medium, the program / program product being executed by at least one processor to implement the steps of the method according to the first aspect or the second aspect.

[0020] In the embodiment of the present application, the channel state information includes a first part and a second part, the first part includes the total number of non-zero coefficients in the PMI, and the second part includes at least a first group and a second group, the transmission priority of the first group is higher than that of the second group, and the second group includes not only the non-zero coefficients of at least one first polarization direction port but also the non-zero coefficients of at least one second polarization direction port. Thus, after reporting the channel state information, even if the third group is discarded, the network side device can still obtain the information of the ports in the two polarization directions, and the effect of the network side device pre-coding is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A schematic diagram of a wireless communication system is shown;

[0022] Figure 2 A flowchart of a channel state information transmission method performed by a terminal according to an embodiment of the present application is shown;

[0023] Figure 3 A flowchart of a channel state information transmission method performed by a network side device according to an embodiment of the present application is shown;

[0024] Figure 4 A structural diagram of a channel state information transmission device applied to a terminal according to an embodiment of the present application is shown;

[0025] Figure 5 A structural diagram of a channel state information transmission device applied to a network side device according to an embodiment of the present application is shown;

[0026] Figure 6 A composition diagram of a communication device according to an embodiment of the present application is shown;

[0027] Figure 7 A composition diagram of a terminal according to an embodiment of the present application is shown;

[0028] Figure 8 A composition diagram of a network side device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0030] The terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects discussed in the specification and claims and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the present application described herein are, for example, capable of orderly or chronological sequential use, regardless of the specific order or chronological sequence described herein. Moreover, the use of the terms "first", "second", and the like is generally described in the context of the description and claims as follows: "first" can mean "second" and, similarly, "second" can mean "first", depending on the circumstances; "first" and "second" are not necessarily intended to denote specific objects unless explicitly stated otherwise. Furthermore, the term "and / or" means at least one of the connected objects, and the character " / " generally means "or" in relation to the associated objects.

[0031] It is worth noting that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably in the embodiments of the present application, and the described techniques can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques can also be applied outside the NR system application, such as in 6th Generation (6G) communication systems. th

[0032] Figure 1 ​A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device, or a vehicle user equipment (VUE), a pedestrian user equipment (PUE), etc. The wearable device includes a smart watch, a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited. The core network device can be a location management device, such as a location management function (LMF, E-SLMC), etc.

[0033] In order to report accurate PMI without increasing too much CSI overhead, Type II codebook divides PMI into several parts and reports them respectively to reduce the overhead.

[0034] The PMI of the Enhanced Type II codebook mainly includes W1, W2 and W f W1 represents a port selection result or an orthogonal basis selection result, W fThis indicates the frequency domain selection result or the time delay tap selection result. W2 is the specific coefficient, and a bitmap indicates the position of the non-zero coefficients, while a strongest coefficient indicator (SCI) indicates the position of the strongest coefficient.

[0035] CSI feedback can be divided into two parts: CSI Part 1 and CSI Part 2. For Enhanced Type II codebooks, CSI Part 1 includes the number of non-zero coefficients in CRI, RI, CQI, and PMI. CSI Part 2 can be divided into three groups: Group 0, Group 1, and Group 2. Group 0 includes port indicators (i... 1,1 ) and SCI(i 1,8,l) Group 1 includes polarization amplitude quantization results (i 2,3,l Frequency Domain (FD) indicator (i 1,5 i 1,6 Floor[K] NZ The magnitude of the higher priority coefficients of / 2]-v 2,4,l and phase i 2,5,l (The maximum amplitude coefficient of each layer does not need to be reported), v represents the number of layers reported, v*2LM v -Floor[K NZ / 2] high-priority bitmap bit(i 1,7,l group2 includes Floor[K] NZ The amplitude and phase of the low-priority coefficients of [ / 2], and Floor[K] NZ / 2] Bits in a low-priority bitmap, Floor represents rounding down, or you can use To replace; that is, use K NZ / 2 Replace The asterisk (*) in the middle is equivalent to Floor[K] NZ / 2].

[0036] When CSI Part 2 is transmitted on the Physical Uplink Shared Channel (PUSCH), the UE can ignore a portion of Part 2 content based on the information priority. Different information has different priorities, such as i in group 1 and group 2. 1,7,l i 2,4,l i 2,5,l The priority is calculated according to the following priority calculation formula:

[0037] Pri(l,i,f) = 2*L*v*π(f) + v*i + l)

[0038]

[0039] wherein, Pri is priority, i is index of 2*L, L is number of beams, l is index of layer, f is index of M v , M v is number of FD vector, the smaller the priority coefficient is, the higher the priority is. The role of π(f) is to make the priority of the delay point closer to tap0 higher, that is, 0, -1, 1, -2, 2…, and the entire priority order is from outside to inside in turn according to the cycle of delay, beam, layer.

[0040] The purpose of setting the priority is to discard as much as possible the information of a certain direction while retaining the more important information.

[0041] In the existing priority sorting mode, only the relationship between the delay and the beam (beam) is considered, and the polarization within a beam is not distinguished, that is, the beams of the first polarization direction are arranged in the first half, and the beams of the second polarization direction are arranged in the second half, wherein one port carries one beam. When the number of delays is 1, the non-zero coefficients of the low priority are the second half of all the coefficients, which correspond to all the ports of the second polarization direction, and are placed in the third group. When the UCIomission is sent, the third group is discarded first, which may cause all the non-zero coefficients of the ports of the second polarization direction to be discarded, thereby affecting the effect of the base station precoding.

[0042] Embodiments of the present application provide a channel state information transmission method, as shown in Figure 2 , the method comprises:

[0043] Step 101: reporting channel state information to a network side device, wherein the channel state information comprises a first part and a second part, the first part comprises the total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprises at least a second group, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers.

[0044] In the embodiments of the present application, the channel state information includes a first part and a second part, the first part includes the total number of non-zero coefficients in the PMI, and the second part includes at least a first group and a second group, and possibly a third group, the transmission priority of the first group is higher than that of the second group, the priority of the second group is higher than that of the third group, and the second group includes non-zero coefficients of at least one port in the first polarization direction and non-zero coefficients of at least one port in the second polarization direction. After reporting the channel state information, even if the third group is discarded, the network side device can also obtain the information of the ports in the two polarization directions, and the effect of the base station precoding is ensured.

[0045] In some embodiments, before reporting the channel state information to the network side device, the method further includes:

[0046] obtaining a first port sequence, the first port sequence including a first port set and a second port set, the first port set including M ports corresponding to the first polarization direction, and the second port set including N ports corresponding to the second polarization direction, M and N are positive integers greater than or equal to 2, and the M ports are arranged before the N ports in the first port sequence;

[0047] rearranging the first port sequence to obtain a second port sequence, wherein at least one port in the N ports is arranged in the first M positions in the second port sequence;

[0048] determining the m and the n according to the second port sequence, M is greater than or equal to m, and N is greater than or equal to n.

[0049] In a specific embodiment, the first port set includes X port groups, each port group in the X port groups includes at least one port corresponding to the first polarization direction, such as m1 ports, and X is an integer less than or equal to M and greater than or equal to 2; the second port set includes Y port groups, each port group in the Y port groups includes at least one port corresponding to the second polarization direction, such as m1 ports, and Y is an integer less than or equal to N and greater than or equal to 2; the X port groups and the Y port groups are arranged alternately in the second port sequence.

[0050] Before reporting the channel state information to the network side device, the first port sequence can be reordered according to a preset ordering manner, so that in the second port sequence, the first port group and the second port group are arranged alternately, the first port group is one of the X port groups, and the second port group is one of the Y port groups, the first port group includes m1 ports in a first polarization direction, the second port group includes m1 ports in a second polarization direction, m1 is a positive integer; the priority of the reordered second port sequence is calculated, and in the priority queue of the ports sorted according to the priority, at least one port in the M ports is arranged in front of at least one port in the N ports.

[0051] In a specific example, M and N are equal, both equal to m2, and port division is performed in a bundle with a length less than m2, each bundle can include m1 ports, and m1 is a positive integer. For example, originally, the first polarization direction includes ports 0, 1, 2, and 3; the second polarization direction includes ports 4, 5, 6, and 7. In the first port sequence, the arrangement order of the ports is: port 0, port 1, port 2, port 3, port 4, port 5, port 6, and port 7; port 0 and port 4 are dual-polarized ports corresponding to the same beam selected by the terminal, port 1 and port 5 are dual-polarized ports corresponding to the same beam selected by the terminal, and so on. In a specific example, m1 is 2, the first port group includes 2 first ports, and the second port group includes 2 second ports. After reordering the ports, the arrangement order of the ports in the second port sequence is: port 0, port 1, port 4, port 5, port 2, port 3, port 6, and port 7, wherein port 0 and port 1 belong to the same first port group, port 4 and port 5 belong to the same second port group, port 2 and port 3 belong to the same first port group, and port 6 and port 7 belong to the same second port group, that is, the ports are sorted in units of first port groups and second port groups. In another specific example, m1 is 1, the first port group includes 1 first port, and the second port group includes 1 second port. After reordering the ports, the arrangement order of the ports in the second port sequence is: port 0, port 4, port 1, port 5, port 2, port 6, port 3, and port 7, wherein port 0, port 1, port 2, and port 3 are a first port group, and port 4, port 5, port 6, and port 7 are a second port group.

[0052] After sorting the ports, the ports are re-indexed, wherein the index of the ports in the port queue after sorting is related to the initial index of the ports, m1, and m2.

[0053] In a specific example, the index of the ports in the port queue after sorting can be calculated using the following formula:

[0054]

[0055] wherein i new is the index of the sorted back port in the second port queue, i old is the index of the sorted front port in the first port queue, for example, the arrangement order of the sorted front ports is port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7, and the arrangement order of the sorted back ports is port 0, port 4, port 1, port 5, port 2, port 6, port 3, port 7, then for port 1, the index of the sorted front port is 2, and the index of the sorted back port is 3; for port 3, the index of the sorted front port is 4, and the index of the sorted back port is 7.

[0056] After the ports are reordered, the priority of the sorted ports can be calculated, for example, the priority of the ports can be assigned in sequence according to the arrangement order of the ports, so that in the priority queue after the ports are sorted according to the priority, the ports in the first polarization direction and the ports in the second polarization direction are arranged alternately.

[0057] In this embodiment, the second group not only includes the non-zero coefficients of at least one port in the first polarization direction, but also includes the non-zero coefficients of at least one port in the second polarization direction, so that when the channel state information is reported to the network side device, even if the third group is discarded, the network side device can still obtain the information of the ports in the two polarization directions, and the effect of the base station precoding is ensured.

[0058] wherein the value of m1 is protocol-conventionally configured or preconfigured by the network side device; and / or

[0059] The preset sorting manner is protocol-conventionally configured or preconfigured by the network side device.

[0060] In some embodiments, before the channel state information is reported to the network side device, the method further comprises:

[0061] obtaining a first port sequence, the first port sequence including a first port set and a second port set, the first port set including M ports corresponding to a first polarization direction, and the second port set including N ports corresponding to a second polarization direction, M and N being positive integers greater than or equal to 2, and the M ports being arranged before the N ports in the first port sequence;

[0062] calculating the priority corresponding to each port in the first port sequence, and determining the m and the n according to the priority, the priority of at least one port in the N ports being higher than the priority of at least one port in the M ports.

[0063] In this embodiment, the ports do not need to be reordered, and the priority of the M ports in the first polarization direction and the N ports in the second polarization direction is directly calculated, so that in the priority queue, the priority of at least one port in the N ports is higher than the priority of at least one port in the M ports.

[0064] In some embodiments, the priority of at least one port in the M ports is higher than the priority of at least one port in the N ports.

[0065] In this way, the second group not only includes the non-zero coefficients of at least one first polarization direction port, but also includes the non-zero coefficients of at least one second polarization direction port. When reporting the channel state information to the network side device, even if the third group is discarded, the network side device can still obtain the information of the ports in the two polarization directions, and ensure the effect of base station precoding.

[0066] In a specific example, the calculation parameters when calculating the priority include K1, v, m1 and m2, where v represents the number of layers layer reported, K1 is 2*L, L is the number of beams, and m2 is the number of ports in the first polarization direction or the second polarization direction.

[0067] In a specific example, the priority of the port can be calculated using the following formula:

[0068]

[0069] π(f)=0iff=0

[0070] π(f)=1iff≠0

[0071] Or π(f)=0if

[0072] π(f)=1if

[0073]

[0074] In this priority calculation formula, Pri represents the measure of priority, the smaller the calculation result, the higher the priority, and when the calculation result is 0, the priority is the highest. Since there are two polarization directions, K1 is the total number of ports selected.

[0075] π(f) is the priority of the FD, f is the index of the selected FD vector, and in the R17 codebook, at most two FD vectors are selected, so the formula is distinguished by 0 and non-0, and n 3,l fis the index of the time domain tap corresponding to the f th FD vector, according to the R17 codebook, one of them is 0, the other can be positive or negative, so it is also distinguished by equal to 0 and not equal to 0.

[0076] is used to represent the priority relationship of different ports, which can represent the priority relationship between ports with different polarization directions. Mod is the formula for calculating the remainder, is the down-rounding representation, l identifies the index of layer, i is the index of the selected port.

[0077] In this embodiment, the priority calculation method is protocol-convention or network-side device configuration or pre-configuration.

[0078] In some embodiments, the method further comprises:

[0079] receiving first information of the network-side device, the first information indicating that the first port sequence is rearranged.

[0080] In some embodiments, the method further comprises:

[0081] receiving second information of the network-side device, the second information indicating that the priority corresponding to each port in the first port sequence is calculated.

[0082] In the embodiments of the present application, the network-side device can indicate whether to perform port reordering, or whether to calculate the priority of the port according to the above priority calculation method. When the network-side device needs to know the port information in two polarization directions, it can send first information to the terminal to indicate that port reordering is performed, or it can send second information to the terminal to indicate that the priority of the port is calculated according to the above priority calculation method. The first information and / or the second information can be included in the CSIconfig, or it can be indicated by independent downlink control information (DCI).

[0083] In some embodiments of the present application, the second part of the CSI includes a first group, a second group and a third group, the transmission priority of the first group is higher than that of the second group, and the transmission priority of the second group is higher than that of the third group; the first group includes port indication, the second group includes FD indication, SCI, polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, bitmap of first priority non-zero coefficient, and the third group includes amplitude and phase of second priority non-zero coefficient, bitmap of second priority non-zero coefficient. The SCI represents the position of the strongest coefficient in all coefficients. The strongest beam information cannot be obtained only by port indication and SCI. The strongest beam information can be obtained by the joint participation of FD indicator. If there is only SCI and port indication in the first group, the SCI is meaningless. Therefore, in the present embodiment, the FD indication and the SCI are carried by the second group.

[0084] In some embodiments of the present application, the second part of the CSI includes a first group, a second group and a third group, the transmission priority of the first group is higher than that of the second group, and the transmission priority of the second group is higher than that of the third group; the first group includes port indication, FD indication, SCI, the second group includes polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, bitmap of first priority non-zero coefficient, and the third group includes amplitude and phase of second priority non-zero coefficient, bitmap of second priority non-zero coefficient. The SCI represents the position of the strongest coefficient in all coefficients. The strongest beam information cannot be obtained only by port indication and SCI. The strongest beam information can be obtained by the joint participation of FD indicator. If there is only SCI and port indication in the first group, the SCI is meaningless. Therefore, in the present embodiment, the FD indication and the SCI are carried by the second group.

[0085] In some embodiments of the present application, the second part of the CSI includes a first group, a second group and a third group, the transmission priority of the first group is higher than that of the second group, and the transmission priority of the second group is higher than that of the third group; the first group includes port indication, FD indication and SCI, the second group includes the amplitude and phase of the first priority non-zero coefficient and the bitmap of the first priority non-zero coefficient, and the third group includes polarization amplitude quantization coefficient, the amplitude and phase of the second priority non-zero coefficient, and the bitmap of the second priority non-zero coefficient. The SCI represents the position of the strongest coefficient in all coefficients. The strongest beam information cannot be obtained only by the port indication and the SCI, and the FD indicator needs to participate together to obtain the strongest beam information. If there is only the SCI and the port indication in the first group, the SCI is meaningless. Therefore, in the present embodiment, the port indication, the FD indication and the SCI are carried by the first group. In addition, since the non-zero coefficients corresponding to the ports of the second polarization direction are all in the third group, the polarization amplitude quantization coefficient is used to transmit the second polarization amplitude, and therefore the second group does not need this coefficient. The polarization amplitude quantization coefficient is placed in the third group.

[0086] In some embodiments of the present application, the second part of the CSI includes a first group, a second group and a third group, the transmission priority of the first group is higher than that of the second group, and the transmission priority of the second group is higher than that of the third group; the first group can include port indication, the second group can include FD indication, SCI, the amplitude and phase of the first priority non-zero coefficient and the bitmap of the first priority non-zero coefficient, and the third group includes polarization amplitude quantization coefficient, the amplitude and phase of the second priority non-zero coefficient, and the bitmap of the second priority non-zero coefficient. In the present embodiment, since the non-zero coefficients corresponding to the ports of the second polarization direction are all in the third group, the polarization amplitude quantization coefficient is used to transmit the second polarization amplitude, and therefore the second group does not need this coefficient. The polarization amplitude quantization coefficient is placed in the third group. The SCI represents the position of the strongest coefficient in all coefficients. The strongest beam information cannot be obtained only by the port indication and the SCI, and the FD indicator needs to participate together to obtain the strongest beam information. If there is only the SCI and the port indication in the first group, the SCI is meaningless. Therefore, in the present embodiment, the FD indication and the SCI are carried by the second group.

[0087] In some embodiments of the present application, the first priority non-zero coefficient is the non-zero coefficient of the N ports with the highest priority after the ports are sorted according to the priority, and the second priority non-zero coefficient is the non-zero coefficient of the P ports with the lowest priority. N and P are positive integers, and the sum of N and P is equal to the total number of ports.

[0088] In some embodiments of the present application, the second part of the CSI can only include the first group and the second group, and not the third group, and the transmission priority of the first group is higher than the transmission priority of the second group.

[0089] In a specific example, the second group includes a bitmap of all non-zero coefficients, so that the bitmap of all non-zero coefficients can be obtained through the second group without transmitting the third group. In another specific example, the first group includes port indication, FD indication, and SCI, and the second group includes polarization amplitude quantization coefficients, amplitudes and phases of all non-zero coefficients, and a bitmap of all non-zero coefficients, so that all non-zero coefficients can be obtained through the second group without transmitting the third group.

[0090] In some embodiments, the network side device configures the number of ports for the terminal, and before reporting the channel state information to the network side device, the method further comprises:

[0091] obtaining the number of ports configured by the network side device;

[0092] If the number of ports selected for use is less than the number of ports configured, the network side device is indicated by the first part of the number of ports selected for use.

[0093] If the number of ports selected by the terminal is less than the number of ports indicated by the network side device, the terminal directly maps the number of ports actually used in the CSI part 1. For example, the network side device configures the terminal to select 16 ports for reporting, but the terminal finds that the effect of 12 ports is close to that of 16 ports, and decides to use 12 ports for reporting. The terminal directly maps the number of ports used in the CSI part 1, and the network side device can know the number of ports actually used by the terminal according to the content of the CSI part 1. The CSI part 1 can explicitly or implicitly indicate the number of ports selected by the terminal.

[0094] In some embodiments, the network side device configures the number of FDs for the terminal, and before reporting the channel state information to the network side device, the method further comprises:

[0095] obtaining the number of FDs configured by the network side device;

[0096] If the number of FDs selected for use is less than the number of FDs configured, the network side device is indicated by the first part of the number of FDs selected for use.

[0097] If the number of FDs selected by the terminal is less than the number of FDs indicated by the network side device, the terminal directly maps the number of FDs actually used in the CSI part 1, for example, the network side device configures S1 FDs, but the terminal decides to use S2 FDs, S2 is less than S1, the terminal directly maps the number of FDs used in the CSI part 1, and the network side device can know the number of FDs actually used by the terminal according to the content of the CSI part 1. Wherein, the CSI part 1 can explicitly or implicitly indicate the number of FDs selected by the terminal.

[0098] In some embodiments, when mapping the CSI to the UCI, if a preset condition is met, the second part does not include at least part of the bitmap of the non-zero coefficients, that is, at least part of the bitmap can be omitted;

[0099] Wherein, the preset condition includes at least one of the following:

[0100] The total number of non-zero coefficients is the same as the total size of the bitmap of all layers, which means that all non-zero coefficients need to be reported, so the bitmap can be omitted, that is, the second part includes the bitmap of the non-zero coefficients;

[0101] Receiving the second information of the network side device, the second information indicating that at least part of the bitmap of the non-zero coefficients does not need to be reported;

[0102] Receiving the third parameter configured by the network side device, the third parameter implicitly indicating that at least part of the bitmap of the non-zero coefficients does not need to be reported;

[0103] The elements of the bitmap of the non-zero coefficients are all 1, which means that all non-zero coefficients need to be reported, so the bitmap can be omitted, that is, the second part includes the bitmap of the non-zero coefficients;

[0104] In the PMI, the elements of at least part of the bitmap of the rank are all 1, so the bitmap of this part of the rank can be omitted, for example, the elements of the bitmap of rank 3 are all 1, which means that the non-zero coefficients of rank 3 need to be reported, so the bitmap of rank 3 can be omitted.

[0105] In addition, the bitmap in the second group can also be omitted, or the bitmap in the third group can be omitted.

[0106] By omitting the reporting of at least part of the bitmap, the resources occupied by the second part can be reduced, and the signaling overhead can be saved.

[0107] The embodiment of the present application further provides a channel state information transmission method, which is executed by a network side device, and comprises the following steps: Figure 3 As shown in the figure, the method comprises the following steps:

[0108] Step 201: receiving channel state information reported by a terminal, wherein the channel state information comprises a first part and a second part, the first part comprises a total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part comprises at least a second group, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers.

[0109] In some embodiments, the second part further comprises at least one of a first group and a third group, a transmission priority of the first group is higher than a transmission priority of the second group, and a transmission priority of the second group is higher than a transmission priority of the third group.

[0110] The first group comprises port indication, the second group comprises frequency domain compression basis (FD) indication, SCI, polarization amplitude quantization coefficient, amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient; or

[0111] The first group comprises port indication, FD indication and SCI, the second group comprises polarization amplitude quantization coefficient, amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient; or

[0112] The first group comprises port indication, FD indication and SCI, the second group comprises amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of a second priority non-zero coefficient, and bitmap of the second priority non-zero coefficient; or

[0113] The first group comprises port indication, the second group comprises FD indication, SCI, amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of a second priority non-zero coefficient, and bitmap of the second priority non-zero coefficient.

[0114] Wherein, after the ports are sorted according to priority, the first priority non-zero coefficient is a non-zero coefficient of N ports with the highest priority, the second priority non-zero coefficient is a non-zero coefficient of P ports with the lowest priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

[0115] In some embodiments, the second part further comprises the first group.

[0116] The second group includes a bitmap of all non-zero coefficients; or

[0117] The first group includes a port indication, an FD indication, and SCI, and the second group includes polarized amplitude quantization coefficients, amplitudes and phases of all non-zero coefficients, and a bitmap of all non-zero coefficients.

[0118] It should be noted that the execution subject of the channel state information transmission method provided in the embodiments of the present application can be a channel state information transmission device, or a module in the channel state information transmission device for executing the channel state information transmission method. In the embodiments of the present application, the channel state information transmission device is taken as an example to illustrate the channel state information transmission method provided in the embodiments of the present application.

[0119] The embodiments of the present application provide a channel state information transmission device, which is applied to a terminal 300, as shown in the figure. Figure 4 The device includes:

[0120] A reporting module 310 is configured to report channel state information to a network side device, wherein the channel state information includes a first part and a second part, the first part includes a total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part includes at least a second group, the second group includes non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers.

[0121] In some embodiments, the device further includes:

[0122] A processing module is configured to obtain a first port sequence, the first port sequence includes a first port set and a second port set, the first port set includes M ports corresponding to a first polarization direction, and the second port set includes N ports corresponding to a second polarization direction, wherein M and N are positive integers greater than or equal to 2, and the M ports are arranged before the N ports in the first port sequence; the first port sequence is rearranged to obtain a second port sequence, wherein at least one port in the N ports is arranged in the first M positions in the second port sequence; and the m and the n are determined according to the second port sequence, wherein M is greater than or equal to m, and N is greater than or equal to n.

[0123] In some embodiments, the first port set includes X port groups, each of the X port groups includes at least one port corresponding to the first polarization direction, X is an integer less than or equal to M and greater than or equal to 2; the second port set includes Y port groups, each of the Y port groups includes at least one port corresponding to the second polarization direction, Y is an integer less than or equal to N and greater than or equal to 2; the X port groups and the Y port groups are arranged alternately in the second port sequence.

[0124] In some embodiments, at least one port of the M ports is arranged in front of at least one port of the N ports.

[0125] In some embodiments, the apparatus further includes:

[0126] The processing module is configured to: obtain a first port sequence, the first port sequence including a first port set and a second port set, the first port set including M ports corresponding to a first polarization direction, the second port set including N ports corresponding to a second polarization direction, M and N are both positive integers greater than or equal to 2, the M ports are arranged in front of the N ports in the first port sequence; calculate a priority corresponding to each port in the first port sequence, and determine the m and the n according to the priority, the priority of at least one port of the N ports being higher than the priority of at least one port of the M ports.

[0127] In some embodiments, the priority of at least one port of the M ports is higher than the priority of at least one port of the N ports.

[0128] In some embodiments, the apparatus further includes:

[0129] The receiving module is configured to receive first information of the network side device, the first information indicating that the first port sequence is rearranged.

[0130] In some embodiments, the apparatus further includes:

[0131] The receiving module is configured to receive second information of the network side device, the second information indicating that the priority corresponding to each port in the first port sequence is calculated.

[0132] In some embodiments, the second part further includes at least one of a first group and a third group, the transmission priority of the first group is higher than the transmission priority of the second group, and the transmission priority of the second group is higher than the transmission priority of the third group.

[0133] The first group includes a port indication, and the second group includes an FD indication, SCI, amplitudes and phases of all non-zero coefficients, and bitmaps of all non-zero coefficients.

[0134] The first group includes a port indication, an FD indication, and SCI, and the second group includes polarization amplitude quantization coefficients, amplitudes and phases of first-priority non-zero coefficients, and bitmaps of first-priority non-zero coefficients.

[0135] The first group includes a port indication, an FD indication, and SCI, and the second group includes amplitudes and phases of first-priority non-zero coefficients, and bitmaps of first-priority non-zero coefficients, and the third group includes polarization amplitude quantization coefficients, amplitudes and phases of second-priority non-zero coefficients, and bitmaps of second-priority non-zero coefficients.

[0136] The first group includes a port indication, and the second group includes an FD indication, SCI, amplitudes and phases of first-priority non-zero coefficients, and bitmaps of first-priority non-zero coefficients, and the third group includes polarization amplitude quantization coefficients, amplitudes and phases of second-priority non-zero coefficients, and bitmaps of second-priority non-zero coefficients.

[0137] The first-priority non-zero coefficients are non-zero coefficients of N ports with the highest priority, and the second-priority non-zero coefficients are non-zero coefficients of P ports with the lowest priority after the ports are sorted according to the priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

[0138] In some embodiments, the second part further includes a first group.

[0139] The second group includes bitmaps of all non-zero coefficients; or

[0140] The first group includes a port indication, an FD indication, and SCI, and the second group includes polarization amplitude quantization coefficients, amplitudes and phases of all non-zero coefficients, and bitmaps of all non-zero coefficients.

[0141] In some embodiments, the apparatus further includes:

[0142] The obtaining module is configured to obtain a number of ports configured by the network-side device.

[0143] The reporting module is further configured to, if the number of ports selected for use is less than the number of ports configured, indicate the number of ports selected for use to the network-side device through the first part.

[0144] In some embodiments, the apparatus further includes:

[0145] obtaining a number of FDs configured by the network-side device;

[0146] The reporting module is further configured to indicate the number of selected FDs to the network-side device through the first part if the number of selected FDs is less than the number of configured FDs.

[0147] In some embodiments, the second part does not include at least part of the bitmap of the non-zero coefficients if a preset condition is met.

[0148] The preset condition includes at least one of the following:

[0149] The total number of the non-zero coefficients is the same as the total size of the bitmap of all layers.

[0150] receiving second information of the network-side device;

[0151] receiving a third parameter configured by the network-side device;

[0152] The elements of the bitmap of the non-zero coefficients are all 1.

[0153] In the PMI, the elements of the bitmap of at least part of the ranks are all 1.

[0154] In some embodiments, if the total number of the non-zero coefficients is the same as the total size of the bitmap of all layers, or the elements of the bitmap of the non-zero coefficients are all 1, the second part does not include all the bitmap of the non-zero coefficients.

[0155] If the elements of the bitmap of the first layer in the PMI are all 1, the second part does not include the bitmap of the first layer.

[0156] The channel state information transmission apparatus in the embodiments of the present application can be an apparatus, an apparatus with an operating system, or an electronic device, and can also be a component in a terminal, an integrated circuit, or a chip. The apparatus or electronic device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc., which are not limited in the embodiments of the present application.

[0157] The channel state information transmission apparatus provided in the embodiments of the present application can achieve the following effects. Figure 2The method embodiments of the application implement various processes and achieve the same technical effects as the above-mentioned apparatus embodiments. To avoid repetition, details are not described herein.

[0158] The application provides a channel state information transmission apparatus, which is applied to a network side device 400, as shown in the figure. Figure 5 The apparatus comprises:

[0159] The receiving module 410 is configured to receive channel state information reported by a terminal, wherein the channel state information comprises a first part and a second part, the first part comprises a total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part comprises at least a second group, wherein the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, and m and n are positive integers.

[0160] In some embodiments, the second part further comprises at least one of a first group and a third group, the transmission priority of the first group is higher than that of the second group, and the transmission priority of the second group is higher than that of the third group.

[0161] The first group comprises port indication, and the second group comprises frequency domain compression basis (FD) indication, SCI, polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient; or

[0162] The first group comprises port indication, FD indication, and SCI, and the second group comprises polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient; or

[0163] The first group comprises port indication, FD indication, and SCI, the second group comprises amplitude and phase of first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of second priority non-zero coefficient, and bitmap of the second priority non-zero coefficient; or

[0164] The first group comprises port indication, the second group comprises FD indication, SCI, amplitude and phase of first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of second priority non-zero coefficient, and bitmap of the second priority non-zero coefficient.

[0165] The first priority non-zero coefficient is a non-zero coefficient of N ports with the highest priority, and the second priority non-zero coefficient is a non-zero coefficient of P ports with the lowest priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

[0166] In some embodiments, the second part further includes a first group;

[0167] The second group includes a bitmap of all non-zero coefficients; or

[0168] The first group includes a port indication, an FD indication, and an SCI, and the second group includes a polarization amplitude quantization coefficient, an amplitude and a phase of all non-zero coefficients, and a bitmap of all non-zero coefficients.

[0169] The channel state information transmission device provided by the embodiments of the present application can implement Figure 3 The method embodiments implement various processes and achieve the same technical effects. To avoid repetition, the details are not described here.

[0170] Optionally, as shown in Figure 6 The present application also provides a communication device 500, which includes a processor 501, a memory 502, a program or instruction stored in the memory 502 and executable on the processor 501. For example, when the communication device 500 is a terminal, the program or instruction is executed by the processor 501 to implement various processes of the above-mentioned channel state information transmission method embodiments applied to the terminal, and achieve the same technical effects. When the communication device 500 is a network side device, the program or instruction is executed by the processor 501 to implement various processes of the above-mentioned channel state information transmission method embodiments applied to the network side device, and achieve the same technical effects. To avoid repetition, the details are not described here.

[0171] The present application also provides a terminal, which includes a processor and a communication interface. The processor is configured to report channel state information to a network side device, the channel state information including a first part and a second part. The first part includes a total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part includes at least a second group. The second group includes non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction. Both m and n are positive integers. The terminal embodiment corresponds to the above-mentioned terminal side method embodiment. The various implementation processes and implementation manners of the above-mentioned method embodiment can be applied to the terminal embodiment, and achieve the same technical effects. Specifically, Figure 7 To implement the hardware structure of a terminal according to an embodiment of the present application.

[0172] The terminal 1000 includes, but is not limited to, at least part of components such as a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a storage 1009, and a processor 1010.

[0173] Those skilled in the art can understand that the terminal 1000 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1010 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or different component arrangements, which are not described here.

[0174] It should be understood that in the embodiments of the present application, the input unit 1004 can include a graphics processor (GPU) 10041 and a microphone 10042. The graphics processor 10041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 can include a display panel 10061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 can include two parts of a touch detection device and a touch controller. The other input devices 10072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0175] In the embodiments of the present application, the radio frequency unit 1001 receives downlink data from a network side device and processes the data by the processor 1010. In addition, the radio frequency unit 1001 sends uplink data to the network side device. Generally, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0176] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 1009 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0177] The processor 1010 can include one or more processing units; optionally, the processor 1010 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1010.

[0178] The processor 1010 is configured to report channel state information to a network side device, wherein the channel state information includes a first part and a second part, the first part includes a total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part includes at least a second group, the second group includes non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, and m and n are positive integers.

[0179] In some embodiments, the processor 1010 is configured to obtain a first port sequence, wherein the first port sequence includes a first port set and a second port set, the first port set includes M ports corresponding to a first polarization direction, the second port set includes N ports corresponding to a second polarization direction, M and N are positive integers greater than or equal to 2, and the M ports are arranged before the N ports in the first port sequence.

[0180] The first port sequence is rearranged to obtain a second port sequence, wherein at least one port in the N ports is arranged in the first M positions in the second port sequence.

[0181] The m and the n are determined according to the second port sequence, wherein M is greater than or equal to m, and N is greater than or equal to n.

[0182] In some embodiments, the first port set includes X port groups, each of the X port groups includes at least one port corresponding to the first polarization direction, X is an integer less than or equal to M and greater than or equal to 2; the second port set includes Y port groups, each of the Y port groups includes at least one port corresponding to the second polarization direction, Y is an integer less than or equal to N and greater than or equal to 2; the X port groups and the Y port groups are arranged alternately in the second port sequence.

[0183] In some embodiments, at least one port in the M ports is arranged in front of at least one port in the N ports.

[0184] In some embodiments, the processor 1010 is configured to obtain a first port sequence, the first port sequence includes a first port set and a second port set, the first port set includes M ports corresponding to a first polarization direction, the second port set includes N ports corresponding to a second polarization direction, M and N are both positive integers greater than or equal to 2, and the M ports are arranged in front of the N ports in the first port sequence.

[0185] The priority of each port in the first port sequence is calculated, and the m and the n are determined according to the priority, the priority of at least one port in the N ports is higher than the priority of at least one port in the M ports.

[0186] In some embodiments, the priority of at least one port in the M ports is higher than the priority of at least one port in the N ports.

[0187] In some embodiments, the processor 1010 is configured to receive first information of the network side device, the first information indicating that the first port sequence is rearranged.

[0188] In some embodiments, the processor 1010 is configured to receive second information of the network side device, the second information indicating that the priority of each port in the first port sequence is calculated.

[0189] In some embodiments, the second part further includes at least one of a first group and a third group, the transmission priority of the first group is higher than the transmission priority of the second group, and the transmission priority of the second group is higher than the transmission priority of the third group.

[0190] The first group includes a port indication, the second group includes a frequency domain compression base FD indication, an SCI, a polarization amplitude quantization coefficient, an amplitude and a phase of a first priority non-zero coefficient, and a bitmap of the first priority non-zero coefficient; or

[0191] The first group comprises port indication, FD indication, SCI, the second group comprises polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, bitmap of first priority non-zero coefficient; or

[0192] The first group comprises port indication, FD indication, SCI, the second group comprises amplitude and phase of first priority non-zero coefficient, bitmap of first priority non-zero coefficient, the third group comprises polarization amplitude quantization coefficient, amplitude and phase of second priority non-zero coefficient, bitmap of second priority non-zero coefficient; or

[0193] The first group comprises port indication, the second group comprises FD indication, SCI, amplitude and phase of first priority non-zero coefficient, bitmap of first priority non-zero coefficient, the third group comprises polarization amplitude quantization coefficient, amplitude and phase of second priority non-zero coefficient, bitmap of second priority non-zero coefficient.

[0194] Wherein, after the ports are sorted according to priority, the first priority non-zero coefficient is non-zero coefficient of N ports with the highest priority, the second priority non-zero coefficient is non-zero coefficient of P ports with the lowest priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

[0195] In some embodiments, the second part further comprises a first group;

[0196] The second group comprises bitmap of all non-zero coefficients; or

[0197] The first group comprises port indication, FD indication, SCI, the second group comprises polarization amplitude quantization coefficient, amplitude and phase of all non-zero coefficients, bitmap of all non-zero coefficients.

[0198] In some embodiments, the processor 1010 is configured to acquire the number of ports configured by the network side device;

[0199] If the number of ports selected for use is less than the number of ports configured, the number of ports selected for use is indicated to the network side device through the first part.

[0200] In some embodiments, the processor 1010 is configured to acquire the number of FDs configured by the network side device;

[0201] If the number of FDs selected for use is less than the number of FDs configured, the number of FDs selected for use is indicated to the network side device through the first part.

[0202] In some embodiments, the second part does not include at least part of the bitmap of the non-zero coefficients if a preset condition is met.

[0203] The preset condition includes at least one of the following:

[0204] The total number of the non-zero coefficients is the same as the total size of the bitmap of all layers.

[0205] Receiving the second information of the network side device;

[0206] Receiving the third parameter configured by the network side device;

[0207] The elements of the bitmap of the non-zero coefficients are all 1.

[0208] In the PMI, the elements of the bitmap of at least part of the ranks are all 1.

[0209] In some embodiments, the second part does not include all the bitmap of the non-zero coefficients if the total number of the non-zero coefficients is the same as the total size of the bitmap of all layers, or the elements of the bitmap of the non-zero coefficients are all 1.

[0210] If the elements of the bitmap of the first layer in the PMI are all 1, the second part does not include the bitmap of the first layer.

[0211] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface. The communication interface is configured to receive channel state information reported by a terminal. The channel state information comprises a first part and a second part. The first part comprises a total number of non-zero coefficients in a precoding matrix indicator (PMI). The second part comprises at least a second group. The second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction. The m and n are positive integers. The network side device embodiment is corresponding to the network side device method embodiment. The implementation processes and implementation manners of the method embodiments can be applied to the network side device embodiment, and the same technical effects can be achieved.

[0212] Specifically, the embodiments of the present application also provide a network side device. As shown in Figure 8As shown, the network device 700 includes: an antenna 71, a radio frequency device 72, and a baseband device 73. The antenna 71 is connected with the radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information through the antenna 71, and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent, and sends the processed information to the radio frequency device 72, which processes the received information and sends it out through the antenna 71.

[0213] The above frequency band processing device can be located in the baseband device 73, and the method performed by the network side device in the above embodiment can be implemented in the baseband device 73, which includes a processor 74 and a memory 75.

[0214] The baseband device 73 may, for example, include at least one baseband board on which a plurality of chips are arranged, such as Figure 8 As shown, one of the chips is, for example, a processor 74 connected with the memory 75 to call the program in the memory 75 and perform the network device operation shown in the above method embodiment.

[0215] The baseband device 73 can also include a network interface 76 for interacting information with the radio frequency device 72, which is, for example, a common public radio interface (CPRI).

[0216] Specifically, the network side device of the embodiment of the present application further includes instructions or programs stored in the memory 75 and executable on the processor 74, and the processor 74 calls the instructions or programs in the memory 75 to perform Figure 5 The methods performed by the modules shown above achieve the same technical effects, and thus will not be described here in detail.

[0217] The embodiment of the present application also provides a readable storage medium having programs or instructions stored thereon, which are executable by a processor to implement each process of the above channel state information transmission method embodiment and achieve the same technical effects. To avoid repetition, the readable storage medium will not be described here in detail.

[0218] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0219] The chip provided by the embodiment of the present application comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, realizes each process of the channel state information transmission method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described here.

[0220] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0221] It should be noted that in this paper, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to the order of functions shown or discussed, but can also include functions performed in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0222] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner or network equipment, etc.) execute the method described in each embodiment of the present application.

[0223] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. A method of transmitting channel state information, characterized by, The method is performed by a terminal, comprising: reporting channel state information to a network side device, wherein the channel state information comprises a first part and a second part, the first part comprises a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprises at least a second group if a preset condition is met, the second group comprises non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, wherein m and n are positive integers; and the second part does not comprise at least part of bitmap of the non-zero coefficients; wherein the preset condition comprises at least one of the following: the total number of non-zero coefficients is the same as a total size of bitmap of all layers; receiving second information of the network side device; receiving a third parameter configured by the network side device; elements of bitmap of the non-zero coefficients are all 1; elements of bitmap of at least part of ranks in the PMI are all 1.

2. The method of Claim 1, wherein Before reporting the channel state information to the network side device, the method further comprises: obtaining a first port sequence, wherein the first port sequence comprises a first port set and a second port set, the first port set comprises M ports corresponding to a first polarization direction, the second port set comprises N ports corresponding to a second polarization direction, M and N are positive integers greater than or equal to 2, and the M ports are arranged before the N ports in the first port sequence; rearranging the first port sequence to obtain a second port sequence, wherein at least one port in the N ports is arranged in the first M positions in the second port sequence; determining the m and the n according to the second port sequence, wherein M is greater than or equal to m, and N is greater than or equal to n.

3. The method of Claim 2, wherein the first port set comprises X port groups, each port group in the X port groups comprises at least one port corresponding to the first polarization direction, X is an integer less than or equal to M and greater than or equal to 2; the second port set comprises Y port groups, each port group in the Y port groups comprises at least one port corresponding to the second polarization direction, Y is an integer less than or equal to N and greater than or equal to 2; and the X port groups and the Y port groups are arranged alternately in the second port sequence.

4. The method of Claim 2, wherein At least one port in the M ports is arranged before at least one port in the N ports.

5. The method of Claim 1, wherein Before reporting the channel state information to the network side device, the method further comprises: obtaining a first port sequence, wherein the first port sequence comprises a first port set and a second port set, the first port set comprises M ports corresponding to a first polarization direction, the second port set comprises N ports corresponding to a second polarization direction, M and N are positive integers greater than or equal to 2, and the M ports are arranged before the N ports in the first port sequence; calculating a priority corresponding to each port in the first port sequence, and determining the m and the n according to the priority, wherein a priority of at least one port in the N ports is higher than a priority of at least one port in the M ports.

6. The method of Claim 5, wherein The priority of at least one port in the M ports is higher than the priority of at least one port in the N ports.

7. The method of Claim 2, wherein The method further comprises: receiving first information of the network side device, the first information indicating rearranging the first port sequence.

8. The method of Claim 5, wherein The method further comprises: receiving second information of the network side device, the second information indicating calculating the priority corresponding to each port in the first port sequence.

9. The method of transmitting channel state information according to any one of claims 1-8, wherein, The second part further comprises at least one of a first group and a third group, the transmission priority of the first group being higher than the transmission priority of the second group, and the transmission priority of the second group being higher than the transmission priority of the third group; The first group comprises port indication, and the second group comprises FD indication, SCI, polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, and bitmap of first priority non-zero coefficient; or The first group comprises port indication, FD indication, and SCI, and the second group comprises polarization amplitude quantization coefficient, amplitude and phase of first priority non-zero coefficient, and bitmap of first priority non-zero coefficient; or The first group comprises port indication, FD indication, and SCI, the second group comprises amplitude and phase of first priority non-zero coefficient, and bitmap of first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of second priority non-zero coefficient, and bitmap of second priority non-zero coefficient; or The first group comprises port indication, the second group comprises FD indication, SCI, amplitude and phase of first priority non-zero coefficient, and bitmap of first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of second priority non-zero coefficient, and bitmap of second priority non-zero coefficient. The first priority non-zero coefficient is the non-zero coefficient of the N ports with the highest priority after the ports are sorted according to the priority, and the second priority non-zero coefficient is the non-zero coefficient of the P ports with the lowest priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

10. The method of transmitting channel state information according to any one of claims 1-8, wherein, The second part further comprises a first group; The second group comprises bitmap of all non-zero coefficients; or The first group comprises port indication, FD indication, and SCI, and the second group comprises polarization amplitude quantization coefficient, amplitude and phase of all non-zero coefficients, and bitmap of all non-zero coefficients.

11. The method of Claim 1-8, wherein, Before reporting channel state information to the network side device, the method further comprises: obtaining the number of ports configured by the network side device; if the number of ports selected for use is less than the configured number of ports, indicating the number of ports selected for use to the network side device through the first part.

12. The method of transmitting channel state information according to any one of claims 1-8, wherein, Before reporting channel state information to the network side device, the method further comprises: obtaining the number of FDs configured by the network side device; if the number of FDs selected for use is less than the configured number of FDs, indicating the number of FDs selected for use to the network side device through the first part. 13.The method of Claim 1-8, wherein, if the total number of non-zero coefficients is the same as the total size of bitmaps of all layers, or, elements of the bitmap of non-zero coefficients are all 1, the second part does not include all the bitmaps of non-zero coefficients; if elements of the bitmap of the first layer in the PMI are all 1, the second part does not include the bitmap of the first layer.

14. A method of transmitting channel state information, characterized by, executed by a network side device, comprising: receiving channel state information reported by a terminal, the channel state information comprising a first part and a second part, the first part comprising a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part comprising at least a second group if a preset condition is met, the second group comprising non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, m and n are positive integers; the second part does not include at least part of the bitmap of the non-zero coefficients; wherein the preset condition comprises at least one of: the total number of non-zero coefficients is the same as the total size of bitmaps of all layers; receiving second information of the network side device; receiving a third parameter configured by the network side device; elements of the bitmap of non-zero coefficients are all 1; in the PMI, elements of the bitmap of at least part of ranks are all 1.

15. The method of Claim 14, wherein, the second part further comprises at least one of a first group and a third group, a transmission priority of the first group is higher than a transmission priority of the second group, and a transmission priority of the second group is higher than a transmission priority of the third group; the first group comprises port indication, the second group comprises frequency domain compression basis (FD) indication, SCI, polarization amplitude quantization coefficient, amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient; or the first group comprises port indication, FD indication, and SCI, the second group comprises polarization amplitude quantization coefficient, amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient; or the first group comprises port indication, FD indication, and SCI, the second group comprises amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of a second priority non-zero coefficient, and bitmap of the second priority non-zero coefficient; or the first group comprises port indication, the second group comprises FD indication, SCI, amplitude and phase of a first priority non-zero coefficient, and bitmap of the first priority non-zero coefficient, and the third group comprises polarization amplitude quantization coefficient, amplitude and phase of a second priority non-zero coefficient, and bitmap of the second priority non-zero coefficient. The first priority non-zero coefficient is a non-zero coefficient of N ports with the highest priority, and the second priority non-zero coefficient is a non-zero coefficient of P ports with the lowest priority after the ports are sorted according to the priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

16. The method of Claim 14, wherein The second part further includes a first group; The second group includes bitmap of all non-zero coefficients; or The first group includes port indication, FD indication, and SCI, and the second group includes polarization amplitude quantization coefficient, amplitude and phase of all non-zero coefficients, and bitmap of all non-zero coefficients.

17. An apparatus for transmitting channel state information, the apparatus comprising: Applied to a terminal, comprising: A reporting module configured to report channel state information to a network side device, wherein the channel state information includes a first part and a second part, the first part includes a total number of non-zero coefficients in a precoding matrix indication (PMI), and the second part includes at least a second group if a preset condition is met, the second group includes non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, m and n are positive integers, and the second part does not include at least part of bitmap of the non-zero coefficients; The preset condition includes at least one of the following: The total number of non-zero coefficients is the same as the total size of bitmap of all layers; Second information of the network side device is received; A third parameter configured by the network side device is received; Elements of bitmap of the non-zero coefficients are all 1; Elements of bitmap of at least part of ranks in the PMI are all 1.

18. The apparatus for transmitting channel state information of claim 17, wherein, The apparatus further includes: A processing module configured to obtain a first port sequence, the first port sequence including a first port set and a second port set, the first port set including M ports corresponding to a first polarization direction, and the second port set including N ports corresponding to a second polarization direction, M and N are positive integers greater than or equal to 2, and the M ports are arranged before the N ports in the first port sequence; the first port sequence is rearranged to obtain a second port sequence, wherein at least one port in the N ports is arranged in the first M positions in the second port sequence; and the m and the n are determined according to the second port sequence, M is greater than or equal to m, and N is greater than or equal to n.

19. The apparatus for transmitting channel state information of claim 18, wherein, The first port set includes X port groups, each port group in the X port groups including at least one port corresponding to the first polarization direction, X is an integer less than or equal to M and greater than or equal to 2; the second port set includes Y port groups, each port group in the Y port groups including at least one port corresponding to the second polarization direction, Y is an integer less than or equal to N and greater than or equal to 2; and the X port groups and the Y port groups are arranged alternately in the second port sequence.

20. The apparatus for transmitting channel state information of claim 18, wherein, At least one port in the M ports is arranged before at least one port in the N ports.

21. The apparatus for transmitting channel state information of claim 17, wherein, The apparatus further includes: The processing module is configured to obtain a first port sequence, the first port sequence comprising a first port set and a second port set, the first port set comprising M ports corresponding to a first polarization direction, the second port set comprising N ports corresponding to a second polarization direction, the M and N being positive integers greater than or equal to 2, the M ports being arranged before the N ports in the first port sequence; calculate a priority corresponding to each port in the first port sequence, and determine the m and the n according to the priority, the priority of at least one port in the N ports being higher than the priority of at least one port in the M ports.

22. The apparatus for transmitting channel state information of claim 21, wherein, The priority of at least one port in the M ports is higher than the priority of at least one port in the N ports.

23. The apparatus for transmitting channel state information of claim 18, wherein, The device further comprises: The receiving module is configured to receive first information of the network side device, the first information indicating that the first port sequence is rearranged.

24. The apparatus for transmitting channel state information of claim 21, wherein, The device further comprises: The receiving module is configured to receive second information of the network side device, the second information indicating that the priority corresponding to each port in the first port sequence is calculated.

25. The transmission apparatus of channel state information according to any one of claims 17-24, characterized in that, The second part further comprises at least one of a first group and a third group, a transmission priority of the first group being higher than a transmission priority of the second group, the transmission priority of the second group being higher than a transmission priority of the third group; The first group comprises a port indication, the second group comprises an FD indication, an SCI, a polarization amplitude quantization coefficient, an amplitude and a phase of a first priority non-zero coefficient, and a bitmap of the first priority non-zero coefficient; or The first group comprises a port indication, an FD indication, and an SCI, the second group comprises a polarization amplitude quantization coefficient, an amplitude and a phase of a first priority non-zero coefficient, and a bitmap of the first priority non-zero coefficient; or The first group comprises a port indication, an FD indication, and an SCI, the second group comprises an amplitude and a phase of a first priority non-zero coefficient, and a bitmap of the first priority non-zero coefficient, and the third group comprises a polarization amplitude quantization coefficient, an amplitude and a phase of a second priority non-zero coefficient, and a bitmap of the second priority non-zero coefficient; or The first group comprises a port indication, the second group comprises an FD indication, an SCI, an amplitude and a phase of a first priority non-zero coefficient, and a bitmap of the first priority non-zero coefficient, and the third group comprises a polarization amplitude quantization coefficient, an amplitude and a phase of a second priority non-zero coefficient, and a bitmap of the second priority non-zero coefficient. The first priority non-zero coefficient is a non-zero coefficient of N ports with the highest priority after the ports are sorted according to the priority, the second priority non-zero coefficient is a non-zero coefficient of P ports with the lowest priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

26. The transmission apparatus of channel state information according to any one of claims 17-24, characterized by, The second part further comprises a first group; The second group comprises a bitmap of all non-zero coefficients; or The second part further comprises a first group; The first group includes port indication, FD indication, and SCI, and the second group includes polarization amplitude quantization coefficient, amplitude and phase of all non-zero coefficients, and bitmap of all non-zero coefficients. 27.The device of any one of claims 17-24, wherein, The apparatus further includes: The acquisition module is configured to acquire a number of ports configured by the network-side device; The reporting module is further configured to, if the number of ports selected for use is less than the configured number of ports, indicate the number of ports selected for use to the network-side device through the first part.

28. The apparatus for transmitting channel state information of any of claims 17-24, wherein, The apparatus further includes: The acquisition module is configured to acquire a number of FDs configured by the network-side device; The reporting module is further configured to, if the number of FDs selected for use is less than the configured number of FDs, indicate the number of FDs selected for use to the network-side device through the first part.

29. The channel state information transmission apparatus of claim 17, wherein, if the total number of non-zero coefficients is the same as the total size of bitmap of all layers, or elements of the bitmap of non-zero coefficients are all 1, the second part does not include all bitmap of non-zero coefficients; if elements of the bitmap of a first layer in the PMI are all 1, the second part does not include the bitmap of the first layer.

30. An apparatus for transmitting channel state information, the apparatus comprising: The network-side device is configured to perform the following operations: The receiving module is configured to receive channel state information reported by a terminal, the channel state information including a first part and a second part, the first part including a total number of non-zero coefficients in a precoding matrix indicator (PMI), and the second part including at least a second group if a preset condition is met, the second group including non-zero coefficients of m ports corresponding to a first polarization direction and non-zero coefficients of n ports corresponding to a second polarization direction, m and n being positive integers; the second part not including at least part of bitmap of the non-zero coefficients. The preset condition includes at least one of the following: the total number of non-zero coefficients is the same as the total size of bitmap of all layers; receiving second information of the network-side device; receiving a third parameter configured by the network-side device; elements of the bitmap of non-zero coefficients are all 1; elements of the bitmap of at least part of ranks in the PMI are all 1.

31. The device for transmission of channel state information according to claim 30, wherein, The second part further includes at least one of a first group and a third group, a transmission priority of the first group being higher than a transmission priority of the second group, and the transmission priority of the second group being higher than a transmission priority of the third group; The first group includes port indication, the second group includes frequency domain compression basis (FD) indication, SCI, polarization amplitude quantization coefficient, amplitude and phase of first-priority non-zero coefficients, and bitmap of first-priority non-zero coefficients; or The first group includes port indication, FD indication, and SCI, and the second group includes polarization amplitude quantization coefficient, amplitude and phase of first-priority non-zero coefficients, and bitmap of first-priority non-zero coefficients; or The first group includes port indication, FD indication, and SCI, and the second group includes polarization amplitude quantization coefficient, amplitude and phase of first-priority non-zero coefficients, and bitmap of first-priority non-zero coefficients; or The first group comprises port indication, FD indication, SCI, the second group comprises amplitude and phase of first priority non-zero coefficients, bitmap of first priority non-zero coefficients, the third group comprises polarization amplitude quantized coefficients, amplitude and phase of second priority non-zero coefficients, bitmap of second priority non-zero coefficients; or The first group comprises port indication, the second group comprises FD indication, SCI, amplitude and phase of first priority non-zero coefficients, bitmap of first priority non-zero coefficients, the third group comprises polarization amplitude quantized coefficients, amplitude and phase of second priority non-zero coefficients, bitmap of second priority non-zero coefficients. The first priority non-zero coefficients are non-zero coefficients of N ports with the highest priority, and the second priority non-zero coefficients are non-zero coefficients of P ports with the lowest priority after the ports are sorted according to the priority, N and P are positive integers, and the sum of N and P is equal to the total number of ports.

32. The device for transmission of channel state information according to claim 30, wherein, The second part further comprises a first group; The second group comprises bitmap of all non-zero coefficients; or The first group comprises port indication, FD indication, SCI, the second group comprises polarization amplitude quantized coefficients, amplitude and phase of all non-zero coefficients, bitmap of all non-zero coefficients.

33. A terminal, characterized by A processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions are executed by the processor to implement the steps of the channel state information transmission method according to any one of claims 1 to 13.

34. A network-side device, comprising: A processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions are executed by the processor to implement the steps of the channel state information transmission method according to any one of claims 14 to 16.

35. A readable storage medium characterized by, A readable storage medium stores a program or instructions, wherein the program or instructions are executed by a processor to implement the channel state information transmission method according to any one of claims 1 to 13, or to implement the steps of the channel state information transmission method according to any one of claims 14 to 16.

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