WO2018171683A1

WO2018171683A1 - Transmission method and device for channel state information pilot frequency, processor, and storage medium

Info

Publication number: WO2018171683A1
Application number: PCT/CN2018/080073
Authority: WO
Inventors: 李永; 吴昊; 蒋创新; 鲁照华; 李儒岳; 陈艺戬; 蔡剑兴
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-03-24
Filing date: 2018-03-22
Publication date: 2018-09-27
Also published as: CN108631989B; CN108631989A

Abstract

Disclosed are a transmission method and device for a channel state information pilot frequency, a processor, and a storage medium, wherein the method comprises: a base station determining information about a channel state information pilot frequency, wherein the information about the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, and the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency; the first pattern is a pattern of a resource element (RE) subjected to code division multiplexing carried out by the channel state information pilot frequency ports; a channel state information pilot frequency resource is used for bearing the channel state information pilot frequency, and the channel state information pilot frequency resource comprises one or more components; the base station sending the information about the channel state information pilot frequency to a terminal; and the base station transmitting the channel state information pilot frequency. Therefore, the technical problem, in the relevant art, that a system for transmitting a channel state information pilot frequency has a high complexity and is incapable of fully utilizing power, is solved.

Description

Channel state information pilot transmission method, device, processor and storage medium

Cross-reference to related applications

The present application is filed on the basis of a Chinese patent application filed on Jan.

Technical field

The present invention relates to the field of communications, and in particular, to a channel state information pilot transmission method, device, processor, and storage medium.

Background technique

Long Term Evolution (LTE)/Long Term Evolution (LTE-A) technology is the mainstream 4th Generation mobile communication technology (4G). A Channel State Information-Reference Signal (CSI-RS) is introduced in the LTE-A for the terminal to predict the channel state. A CSI-RS that uses non-zero-power transmission is called a non-zero-power CSI-RS (NZP CSI-RS). Sometimes, in order to avoid interference, some resource elements on the Physical Downlink Shared Channel (PDSCH) need to be avoided. The data transmission on the RE, Resource Element) is implemented by the zero-power transmission CSI-RS method, which is called zero-power CSI-RS (ZP CSI-RS), and the corresponding resource unit set is the zero-power CSI-RS resource ( Zero Power CSI-RS Resource). Sometimes, in order to measure interference, a CSI-RS is transmitted with zero power, and the corresponding resource unit set is called a Channel-State Information-Interference Measurement Resource (CSI-IM Resource).

The channel state information pilot configuration, that is, the CSI-RS configuration is used to indicate the RE mapped by the CSI-RS, that is, the RE used for transmitting the CSI-RS, and the CSI-RS configuration sequence number is used. To distinguish between different CSI-RS configurations. A CSI reference signal subframe configuration is used to indicate a subframe in which a CSI-RS transmission is located.

The development of production, living, and scientific research technologies has raised the demand for the fifth generation (5G) wireless communication technology. 5G wireless technology is characterized by large-bandwidth, massive-multiple-input multiple-output (mass-MIMO) beam technology, which needs to meet large data transmission, low-latency transmission, and object interconnection transmission. Transmission under high-speed movement. 3GPP organized research on NR (New Radio) access technology. The NR adapts the frequency range from 0.6 GHz to 100 GHz, and the interval between subcarriers can be configured, and the length of the subframe or time slot in the time domain can be configured, and the data can be transmitted in the configured orthogonal frequency division multiplexing (OFDM). In the Orthogonal Frequency Division Multiplexing, the pattern and position of the data demodulation pilot need to be configurable, and the beam can be changed between the OFDM symbol and the OFDM symbol, and even the OFDM symbol can change the beam. The NR also needs to introduce CSI-RS to support channel state information measurement, beam management, and channel phase tracking. NR requires CSI-RS to adopt three transmission modes, periodic mode transmission, semi-persistent mode transmission, and aperiodic mode transmission. . In order to improve the power utilization efficiency of the CSI-RS, it is necessary to support code division multiplexing between ports.

In the related art, the system for transmitting channel state information pilots has high complexity, and there is no scheme for transmitting channel state information pilots of flexible and diverse patterns, and making full use of power.

Summary of the invention

In view of this, embodiments of the present invention are directed to providing a method, a device, a processor, and a storage medium for transmitting channel state information pilots, so as to solve at least the system complexity of transmitting channel state information pilots in the related art is high, and is insufficient. The technical problem of using power.

In a first aspect, an embodiment of the present invention provides a method for transmitting a channel state information pilot, where the method includes:

The base station determines the information of the channel state information pilot, where the information of the channel state information pilot includes at least the number of channel state information pilot ports and the first pattern, the channel state information pilot port, configured to transmit the channel state information pilot, The first pattern is a pattern of resource elements RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state information pilot, and the channel state information pilot resource includes one or more constituent elements; The base station transmits information of the channel state information pilot to the terminal; the base station transmits the channel state information pilot.

In a second aspect, an embodiment of the present invention provides a transmission apparatus for channel state information pilot, where the apparatus includes:

a determining unit, configured to determine information of a channel state information pilot, where the information of the channel state information pilot includes at least a number of channel state information pilot ports and a first pattern, and the channel state information pilot port is used to transmit channel state information Pilot, the first pattern is a pattern of channel state information pilot port code division multiplexed resource unit RE, the channel state information pilot resource is used to carry channel state information pilot, and the channel state information pilot resource includes one or more a component, a transmitting unit configured to transmit information of a channel state information pilot to the terminal, and a transmitting unit configured to transmit a channel state information pilot.

In a third aspect, an embodiment of the present invention further provides a storage medium, where the storage medium includes a stored program, where the method for transmitting the channel state information pilot is executed when the program is running.

In a fourth aspect, the embodiment of the present invention further provides a processor configured to run a program, where the method for transmitting the channel state information pilot is executed when the program is running.

In a fifth aspect, an embodiment of the present invention further provides a base station, including: a processor, a memory, and a transceiver;

The memory is configured to store executable instructions;

The transceiver is configured to perform information transceiving and communication according to control of the processor;

The processor is configured to perform the following operations:

Determining information of the channel state information pilot; wherein the information of the channel state information pilot includes at least a number of channel state information pilot ports and a first pattern, the channel state information pilot port is configured to transmit the channel state Information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state information pilot, Channel state information pilot resources include one or more constituent elements;

Sending information of the channel state information pilot to the terminal;

Transmitting the channel state information pilot.

In the embodiment of the present invention, the base station determines information of the channel state information pilot, where the information of the channel state information pilot includes at least the number of channel state information pilot ports and the first pattern, and the channel state information pilot port is used for transmitting. a channel state information pilot, the first pattern is a pattern of channel state information pilot port code division multiplexed RE, the channel state information pilot resource is used to carry channel state information pilot, and the channel state information pilot resource includes one or more a component component; the base station transmits the channel state information pilot information to the terminal; the base station transmits the channel state information pilot, thereby solving the technical problem that the system complexity of the transmission channel state information pilot is high in the related art, and the power cannot be fully utilized. The technical effect of the channel state information pilot of the transmission port code division multiplexing is realized.

DRAWINGS

The drawings described herein are intended to provide an understanding of the embodiments of the invention, and are intended to be a In the drawing:

1 is a schematic diagram of an optional terminal for transmitting a channel state information pilot for port code division multiplexing according to an embodiment of the present invention;

2 is a flowchart of a method for transmitting a channel state information pilot according to an embodiment of the present invention;

3 is a schematic diagram of a transmission apparatus for channel state information pilots according to an embodiment of the present invention.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It is understood that the embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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

During the research, the inventor found that a CSI-RS configuration is a CSI-RS configuration with a certain number of antenna ports, for example, a CSI-RS configuration with a configuration number of 0 with an antenna port number of 8. Usually the serial number is the index number.

The related art supports CSI-RSs with a port number of 1, 2, 4, 8, 12, 16. The number of CSI-RS resource unit patterns of these port numbers is in each physical resource block of the bandwidth range on the transmission subframe (PRB, Physical). Resource Block) Repeat on the opposite side.

The CSI-RS resource with the number of ports 1, 2, 4, and 8 is composed of a single CSI-RS configuration, and the number of ports is 12, 16, 20, 24, 28, and 32 CSI-RS. Resources are aggregated from multiple CSI-RS configurations.

The base station or the terminal usually measures the channel state through a channel state measurement process (CSI Process). One CSI-RS resource is usually configured in one CSI process, and the terminal feeds back according to the measurement of the CSI-RS.

In order to make full use of power and improve the accuracy of channel measurement, the ports are divided into multiple groups, and the ports in the group are code division multiplexed.

The base station notifies the terminal about the CSI-RS by using upper layer signaling, and the information includes: a CSI-RS resource configuration identifier, a CSI-RS port number, a CSI-RS configuration, and a CSI-RS subframe. Configuration.

However, the above-described system for transmitting channel state information pilots is highly complex and cannot fully utilize power.

In the embodiment of the present invention, the base station determines the information of the channel state information pilot, where the information of the channel state information pilot includes at least the number of channel state information pilot ports and the first pattern, and the channel state information pilot The port is configured to transmit the channel state information pilot, where the first pattern is a pattern of a RE of the channel state information pilot port code division multiplexing, and the channel state information pilot resource is used to carry the channel state. Information pilot, the channel state information pilot resource includes one or more constituent elements; the base station transmits information of the channel state information pilot to the terminal; and the base station transmits the channel state information pilot.

Example 1

The method embodiment provided in Embodiment 1 of the present application can be executed in a mobile terminal, a computer terminal or the like. Taking a computer terminal (ie, a computer terminal on a base station) as an example, as shown in FIG. 1, the computer terminal may include one or more (only one shown in FIG. 1) processor 101 (the processor 101 may include but It is not limited to a processing device such as a microprocessor (MCU, Micro Controller Unit) or a programmable logic device (FPGA), a memory 103 configured to store data, and a transceiver 105 configured as a communication function. It will be understood by those skilled in the art that the structure shown in FIG. 1 is merely illustrative and does not limit the structure of the above electronic device.

The memory 103 can be configured as a software program and a module for storing application software, such as a program instruction/module corresponding to the control method of the device in the embodiment of the present invention, and the processor 101 runs the software program and the module stored in the memory 103, thereby The above methods are implemented by performing various functional applications and data processing. The memory can include high speed random access memory and can also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory can also include memory remotely located relative to the processor, which can be connected to the computer terminal over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transceiver 105 is configured to receive or transmit data via a network. The network examples described above may include a wireless network provided by a communication provider of the computer terminal. In one example, the transmission device includes a Network Interface Controller (NIC) that can be connected to other network devices through the base station to communicate with the Internet. In one example, the transceiver can be a Radio Frequency (RF) module configured to communicate with the Internet wirelessly.

According to an embodiment of the present invention, a method embodiment of a method for transmitting a channel state information pilot is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be in a computer system such as a set of computer executable instructions. The execution is performed, and although the logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

2 is a flowchart of a method for transmitting a channel state information pilot according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:

Step S202, the base station determines information of channel state information pilots;

The channel state information pilot information includes at least a channel state information pilot port number and a first pattern, the channel state information pilot port is used to transmit a channel state information pilot, and the first pattern is a channel state information pilot port code. a pattern of the multiplexed RE, the channel state information pilot resource is used to carry the channel state information pilot, and the channel state information pilot resource includes one or more constituent elements;

Step S204, the base station sends the information of the channel state information pilot to the terminal;

Step S206, the base station transmits a channel state information pilot.

With the above embodiment, the base station determines the information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and the first pattern, and the channel state information pilot port is used to transmit the channel state. Information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state information pilot, and the channel state information pilot resource includes one or more The component unit transmits the channel state information pilot information to the terminal; the base station transmits the channel state information pilot. . Therefore, the technical problem that the system of the transmission channel state information pilot is high in complexity and the power cannot be fully utilized in the related art is solved, and the technical effect of the channel state information pilot of the transmission port code division multiplexing is realized.

In an embodiment, the execution body of the foregoing steps may be a base station or the like, but is not limited thereto.

The CSI-RS is transmitted on the RE, and the set of REs transmitting the CSI-RS is the CSI-RS resource pattern. The multiplexing mode of the CSI-RS port on the RE includes code division multiplexing, and the set of REs occupied by a group of ports for code division multiplexing is the pattern of the RE of the group of port code division multiplexing. The CSI-RS information transmitted by the base station can obtain the number of CSI-RS ports and the pattern of the RE code of the port code division multiplexing according to the information. When the terminal obtains the information, it knows the channel state of the measured port and the RE pattern from which The channel state of the port for code division multiplexing is measured.

For example, the number of CSI-RS ports may be a positive integer, for example, may be 1, 2, 4, 8, 12, 16, 24, 32, and the like. The CSI-RS port code division multiplexed RE pattern may be represented as occupying Q subcarriers in the frequency domain, occupying R OFDM symbols in the time domain, and simplifying representation as an array (Q, R); for example, occupying RE numbers is The pattern of the RE of the CSI-RS port code division multiplexing of 2 may be (Q, R) = (2, 1), or (Q, R) = (1, 2); CSI occupying the number of REs is 4. The pattern of the RE code of the RS port code division multiplexing may be (Q, R) = (4, 1), or (Q, R) = (1, 4), or (Q, R) = (2, 2); The pattern of the RE of the CSI-RS port code division multiplexing occupying the RE number of 8 may be (Q, R) = (8, 1), or (Q, R) = (1, 8), or (Q, R)=(4,2), or (Q,R)=(2,4); the pattern of the RE of the CSI-RS port code-multiplexed with the number of REs of 16 may be (Q, R)=( 16,1), or (Q,R)=(1,16), or (Q,R)=(8,2), or (Q,R)=(2,8), or (Q,R) = (4, 4). Where Q and R are positive integers.

In an embodiment, the information of the channel state information pilot is jointly coded in the following manner: jointly coding the number of channel state information pilot ports and the first pattern; or, the channel state information pilot information also includes the channel When the state information component of the pilot resource is of a class, the number of channel state information pilot ports, the first pattern, and the class of the component are jointly encoded.

In an embodiment, the channel state information pilot information further includes a component class, a channel state information pilot port code division multiplexing length, wherein the base station sends the channel state information pilot information to the terminal, including: The class of the component elements and the channel state information transmitted by the terminal are combined to indicate the first pattern; or the number of CSI-RS ports transmitted by the base station to the terminal, the component class, and the channel state information. The length of the frequency port code division multiplexing collectively indicates the first pattern.

In an embodiment, the component elements occupy Y subcarriers in the frequency domain and occupy Z OFDM symbols in the time domain. The channel state information pilot port code division multiplexing length is X, and X, Y, and Z are positive integers. Wherein the first pattern is determined by: in the case where Y is greater than Z, the first pattern occupies X subcarriers in the frequency domain and occupies 1 OFDM symbol in the time domain; and in the case where Y is less than Z, A pattern occupies 1 subcarrier in the frequency domain and occupies X OFDM symbols in the time domain; in the case where Y is equal to Z, the first pattern occupies X subcarriers in the frequency domain and occupies 1 OFDM symbol in the time domain. Or the first pattern occupies 1 subcarrier in the frequency domain and X OFDM symbols in the time domain.

In an embodiment, the second pattern occupies L subcarriers in the frequency domain, the second pattern occupies M OFDM symbols in the time domain, the number of channel state information pilot ports is N, and the channel state information pilot port code points The length of the multiplexing is X, and the second pattern is a pattern of channel state information pilot resources for carrying channel state information pilots, wherein the first pattern is determined by: subcarriers occupied by the first pattern in the frequency domain Number Q = max(L*X/N, 1), where max() is a function of the maximum value; the number of OFDM symbols occupied by the first pattern in the time domain is R = X / Q, where L, M, N, X, Q, and R are positive integers.

In an embodiment, the transmitting, by the base station, the information of the channel state information pilot to the terminal includes: the base station notifying the terminal to the terminal, to indicate the first pattern by the two information of the notification, where the two notified The information is jointly coded, and the plurality of information includes Q subcarriers occupied by the first pattern in the frequency domain, R OFDM symbols occupied by the first pattern in the time domain, and length X of the channel state information pilot port code division multiplexing.

In an embodiment, the transmitting, by the base station, the information of the channel state information pilot to the terminal comprises: the base station notifying the terminal of the number of component elements spanned by the first pattern.

In an embodiment, in a case where the positions of the REs of the first pattern port code division multiplexing are discontinuous, the first pattern is determined by connecting a plurality of REs according to a current positional relationship of the plurality of REs to obtain a connection. The first pattern formed by the plurality of REs thereafter.

In an embodiment, the transmitting, by the base station, the information of the channel state information pilot to the terminal includes: the base station notifying the terminal of the category of the subframe, to indicate the first pattern by using a category of the subframe, where the subframe is when the first pattern is transmitted. The subframe used.

In an embodiment, the base station notifying the terminal of the category of the subframe includes: the base station notifying the terminal of the number of OFDM symbols included in the subframe.

In an embodiment, the base station notifying the terminal of the category of the subframe includes: the base station notifying the terminal of the interval size of the subcarrier used when transmitting the first pattern.

In an embodiment, the method further includes: the base station notifying the terminal of the information of the second pattern and the length information of the channel state information pilot port code division multiplexing, wherein the second pattern occupies L subcarriers in the frequency domain, The second pattern occupies M OFDM symbols in the time domain, the length of the channel state information pilot port code division multiplexing is X, and the second pattern is a pattern of channel state information pilot resources for carrying channel state information pilots. The first pattern wherein the first pattern is determined by determining a first pattern from a joint indication of the information of the second pattern and the length X of the channel state information pilot port code division multiplexing.

In an embodiment, the first pattern is determined by a joint indication of the M OFDM symbols occupied by the second pattern in the time domain and the length X of the channel state information pilot port code division multiplexing.

In an embodiment, the information of the channel state information pilot further includes information about whether the first pattern exists only in one OFDM symbol, wherein the terminal uses the second pattern information, the channel state information, and the length of the pilot port code division multiplexing. X. Whether the first pattern is only present in one OFDM symbol determines the first pattern indicated by the base station.

An optional implementation manner of this embodiment is: performing joint coding in one of the following manners: the number of ports of the CSI-RS, and the joint coding of the code of the CSI-RS port code division multiplexing; the CSI-RS information further includes: a class of components, wherein the number of ports of the CSI-RS, the joint coding of the pattern of the CSI-RS port code division multiplexed, and the combination of the component elements; the CSI-RS resource pattern is a set of REs transmitting CSI-RS, Component composition. A component is a collection of REs.

The number of different CSI-RS ports may be independent of the pattern of the REs of the CSI-RS port code division multiplexing, that is, the number of certain CSI-RS ports is related to the pattern of the REs corresponding to the possible CSI-RS port code division multiplexing. Therefore, joint coding of the number of CSI-RS ports and the pattern of REs of the CSI-RS port code division multiplexing can save signaling overhead; the number of ports of the CSI-RS, and the joint coding of the code of the CSI-RS port code division multiplexed RE There is a correlation between the categories of the component elements, so the number of ports of the CSI-RS, the joint coding of the pattern of the CSI-RS port code division multiplexing, and the joint coding of the component elements can save signaling overhead.

For example, the number of CSI-RS ports is M2, and the pattern of REs of CSI-RS port code division multiplexing is N2. The combination of the actual number of CSI-RS ports and the pattern of REs of CSI-RS port code division multiplexing is L2, using X2 sequence numbers or states to indicate the number of CSI-RS ports corresponding to CSI-RS resources and the pattern of REs multiplexed with CSI-RS ports, or X2=L2; or L2<X2<M2*N2, where The symbol "*" represents a multiplication operation.

Another optional implementation manner of this embodiment is that the CSI-RS information further includes: a category of component components, and a length of CSI-RS port code division multiplexing; wherein, the CSI-RS port code division multiplexed RE pattern is configured by One of the following manners indicates that the type of the component component, the length of the CSI-RS port code division multiplexing are collectively indicated; the number of ports of the CSI-RS, the class of the component component, and the length of the CSI-RS port code division multiplexing are collectively indicated. .

The number of REs occupied by the pattern of the CSI-RS port code division multiplexing is the length of the CSI-RS port code division multiplexing. The class of the component element and the length of the CSI-RS port code division multiplexing together determine the pattern of the RE of the CSI-RS port code division multiplexing, so the length of the component component and the CSI-RS port code division multiplexing are collectively indicated. The CSI-RS port code division multiplexed RE pattern can save signaling overhead. The number of ports of the CSI-RS, the type of component components, and the length of the CSI-RS port code division multiplexing jointly determine the pattern of the RE of the CSI-RS port code division multiplexing, so the number of ports of the CSI-RS and the components of the components The length of the class, CSI-RS port code division multiplexing together indicates that the pattern of REs of the CSI-RS port code division multiplexing can save signaling overhead.

For example, according to the number of subcarriers Y contained in the frequency domain, the number of OFDM symbols included in the time domain is differentiated, for example, the distinction is made: (Y, Z) = (2, 1), (Y, Z) = (1,2), (Y, Z) = (4, 1), (Y, Z) = (2, 2), (Y, Z) = (1, 4), (Y, Z) = (8 , 1), (Y, Z) = (2, 4), (Y, Z) = (1, 8), (Y, Z) = (4, 2).

The component class is (Y, Z) = (2, 1), the port code division multiplexing length is 2, indicating the pattern of the RE code division multiplexing (Q, R) = (2, 1); or the component class is (Y, Z) = (1, 2), the port code division multiplexing length is 2, indicating the pattern of the RE code division multiplexing (Q, R) = (1, 2); or the component class is (Y, Z)=(4,1), port code division multiplexing length is 2, indicating the pattern of port code division multiplexing RE (Q, R) = (2, 1); or component class is (Y, Z) = (1, 4), the port code division multiplexing length is 2, indicating the pattern of the RE code division multiplexing (Q, R) = (1, 2); or the component class is (Y, Z) = (2, 2), the port code division multiplexing length is 2, indicating the pattern of the port code division multiplexed RE (Q, R) = (2, 1); the component class is (Y, Z) = (2, 2), port The code division multiplexing length is 2, indicating the pattern of the RE code division multiplexing (Q, R) = (1, 2); the component class is (Y, Z) = (4, 1), port code division multiplexing The length is 4, indicating the pattern of the RE code division multiplexing (Q, R) = (4, 1); or the component type is (Y, Z) = (1, 4), the port code division multiplexing length is 4 , a map indicating the RE of the port code division multiplexing (Q, R) = (1,4).

For another example, the number of ports is 2, the component class is (Y, Z) = (2, 1), and the port code division multiplexing length is 2, indicating the pattern of the port code division multiplexed RE (Q, R) = (2) , 1); or the number of ports is 4, the component class is (Y, Z) = (2, 1), the port code division multiplexing length is 2, indicating the pattern of the port code division multiplexed RE (Q, R) = (1, 2).

Another optional implementation manner of this embodiment is: the component component occupies Y subcarriers in the frequency domain, occupies Z OFDM symbols at time or above, and the length of the CSI-RS port code division multiplexing is X; CSI-RS port The pattern of code division multiplexed REs is indicated by the following manner: In the case where Y is greater than Z, the pattern of REs of the CSI-RS port code division multiplexing occupies X subcarriers in the frequency domain and occupies 1 OFDM symbol in the time domain. When Y is smaller than Z, the pattern of the RE of the CSI-RS port code-multiplexed occupies 1 subcarrier in the frequency domain, and occupies X OFDM symbols in the time domain; the component class and the CSI-RS port code are obtained. In the case of multiplexed length information, the length of the component class and the CSI-RS port code division multiplexing indicates that the pattern of the port code division multiplexed RE can save signaling overhead, and the sizes of Y and Z also indicate the channel. The direction of the change is fast, so the pattern of the RE code-multiplexed REs determined according to the present scheme can also improve the performance of the channel state estimation.

For example, the component is (Y, Z)=(2,1), and the length of the code division multiplexing of the CSI-RS port is X=2, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q, R). = (2, 1); the component is (Y, Z) = (1, 2), and the length of the code division multiplexing of the CSI-RS port is X = 2, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q, R) = (1, 2); or, the component is (Y, Z) = (4, 1), and the length of the CSI-RS port code division multiplexing is X = 2, indicating the CSI-RS port code division. The pattern of the multiplexed RE is (Q, R) = (2, 1); the component is (Y, Z) = (1, 4), and the length of the CSI-RS port code division multiplexing is X = 2, indicating CSI -RS port code division multiplexing RE pattern is (Q, R) = (1, 2); or, component is (Y, Z) = (4, 1), CSI-RS port code division multiplexing length For X=4, the pattern of the RE indicating the CSI-RS port code division multiplexing is (Q, R)=(4, 1); the component is (Y, Z)=(1, 4), CSI-RS port code The length of the sub-multiplexing is X=4, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q, R)=(1, 4); or, the component is (Y, Z)=(4, 1) ), the length of the CSI-RS port code division multiplexing is X=4, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q) R)=(4,1); the component is (Y,Z)=(1,4), and the length of the CSI-RS port code division multiplexing is X=4, indicating the RE of the CSI-RS port code division multiplexing The pattern is (Q, R) = (1, 4); or, the component is (Y, Z) = (4, 2), and the length of the CSI-RS port code division multiplexing is X = 2, indicating the CSI-RS port. The code of the code division multiplexed RE is (Q, R) = (2, 1); the component is (Y, Z) = (2, 4), and the length of the CSI-RS port code division multiplexing is X = 2, The pattern of the RE indicating the CSI-RS port code division multiplexing is (Q, R) = (1, 2); or, the component is (Y, Z) = (4, 2), the CSI-RS port code division multiplexing The length is X=4, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q, R)=(4, 1); the component is (Y, Z)=(2, 4), CSI-RS The length of the port code division multiplexing is X=4, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q, R)=(1, 4); or, the component is (Y, Z)=(4) 2), the length of the CSI-RS port code division multiplexing is X=4, indicating that the pattern of the RE of the CSI-RS port code division multiplexing is (Q, R)=(4, 1); the component is (Y, Z)=(2,4), the length of the CSI-RS port code division multiplexing is X=4, indicating the RE of the CSI-RS port code division multiplexing Is (Q, R) = (1,4).

Another optional implementation manner of this embodiment is: the number of ports of the CSI-RS is N, the resource pattern of the CSI-RS occupies L subcarriers in frequency, and M OFDM symbols are occupied in the time domain, and the CSI-RS port code is divided. The length of the used signal is X; the CSI-RS port code division multiplexed RE pattern is indicated by: CSI-RS port code division multiplexed RE pattern occupies Q subcarriers in the frequency domain and occupies R in the time domain OFDM symbols, where: Q = max (L * X / N, 1), R = X / Q. Max() means taking a larger element; L, M, N, X, Q, and R are positive integers.

The information "CSI-RS port number is N, the CSI-RS resource pattern occupies L subcarriers in frequency, and M OFDM symbols are occupied in the time domain, and the CSI-RS port code division multiplexing length is X" indicates CSI- The RS port code division multiplexed RE pattern can save signaling overhead and can fully utilize the power of the CSI-RS port.

For example, for example, the number of ports of the CSI-RS is N=2, the resource pattern of the CSI-RS is (L,M)=(2,1), and the length of the port code division multiplexing is X=2, indicating the CSI-RS port. Code division multiplexed RE pattern (Q, R) = (2, 1); or, CSI-RS port number is N = 2, CSI-RS resource pattern is (L, M) = (1, 2 The length of the port code division multiplexing is X=2, indicating the pattern (Q, R) = (1, 2) of the RE of the CSI-RS port code division multiplexing.

For another example, the number of ports of the CSI-RS is N=4, the resource pattern of the CSI-RS is (L, M)=(4, 1), and the length of the port code division multiplexing is X=2, indicating the CSI-RS port code. The pattern of the multiplexed RE (Q, R) = (2, 1); or, the number of ports of the CSI-RS is N = 4, and the resource pattern of the CSI-RS is (L, M) = (1, 4) The length of the port code division multiplexing is X=2, indicating the pattern of the RE of the CSI-RS port code division multiplexing (Q, R)=(1, 2); or, the number of ports of the CSI-RS is N=4, The resource pattern of the CSI-RS is (L, M) = (2, 2), and the length of the port code division multiplexing is X = 2, indicating the pattern of the RE of the CSI-RS port code division multiplexing (Q, R) = ( 1,2).

For another example, the number of ports of the CSI-RS is N=4, the resource pattern of the CSI-RS is (L, M)=(4, 1), and the length of the port code division multiplexing is X=4, indicating the CSI-RS port code. The pattern of the multiplexed RE (Q, R) = (4, 1); or, the number of ports of the CSI-RS is N = 4, and the resource pattern of the CSI-RS is (L, M) = (1, 4) The length of the port code division multiplexing is X=4, indicating the pattern of the RE of the CSI-RS port code division multiplexing (Q, R)=(1, 4); or, the number of ports of the CSI-RS is N=4, The resource pattern of the CSI-RS is (L, M) = (2, 2), and the length of the port code division multiplexing is X = 4, indicating the pattern of the RE of the CSI-RS port code division multiplexing (Q, R) = ( 2, 2).

For another example, the number of ports of the CSI-RS is N=8, the resource pattern of the CSI-RS is (L, M)=(4, 2), and the length of the port code division multiplexing is X=2, indicating the CSI-RS port code. The pattern of the multiplexed RE (Q, R) = (1, 2); or, the number of ports of the CSI-RS is N = 8, and the resource pattern of the CSI-RS is (L, M) = (2, 4) The length of the port code division multiplexing is X=2, indicating the pattern of the RE of the CSI-RS port code division multiplexing (Q, R)=(1, 2); or, the number of ports of the CSI-RS is N=8, The resource pattern of the CSI-RS is (L, M) = (4, 2), and the length of the port code division multiplexing is X = 4, indicating the pattern of the RE of the CSI-RS port code division multiplexing (Q, R) = ( 2, 2); or, the number of ports of the CSI-RS is N=8, the resource pattern of the CSI-RS is (L, M)=(2, 4), and the length of the port code division multiplexing is X=4, indicating CSI - RS port code division multiplexed RE pattern (Q, R) = (1, 4).

An optional implementation manner of this embodiment is: the base station indicates the pattern information of the RE of the terminal CSI-RS port code division multiplexing by: notifying two of the following information: CSI-RS port code division multiplexing RE The pattern occupies the Q subcarrier in the frequency domain, and the pattern of the RE of the CSI-RS port code division multiplexes R OFDM symbols in the time domain, and the length of the CSI-RS port code division multiplexing is X; and, notified The two pieces of information are jointly encoded.

Two of the three parameters Q, R, and Z are jointly encoded and notified.

For example: notification (Q, R), and joint coding; or notification (Q, X) and joint coding; or notification (R, X) and joint coding.

An optional implementation manner of this embodiment is: the base station notifies the terminal CSI-RS port code division multiplexed RE pattern information in the following manner: the number of constituent elements spanned by the CSI-RS port code division multiplexed RE pattern .

The information of the number of constituent elements spanned by the pattern of REs code-multiplexed by the CSI-RS port indicates that the pattern of the RE of the CSI-RS port code division multiplexing can save signaling overhead and indicate tightness between components degree.

For example, it is notified whether the pattern of the RE of the CSI-RS port code division multiplexing is within one element, or the pattern of the RE of the CSI-RS port code division multiplexing is notified to span one element, or two elements, or four elements.

An optional implementation manner of this embodiment is: in the case where the component positions are discontinuous, the pattern of the RE of the CSI-RS port code division multiplexing is obtained by the following method: excluding the gap between the constituent elements, and then continuing the composition according to the position The pattern of the RE of the CSI-RS port code division multiplexing in the case of the component is obtained.

The pattern of the RE of the CSI-RS port code division multiplexing is the same as the pattern of the RE of the CSI-RS port code division multiplexed in the case of the continuous element position after the gap between the elements is excluded. The present application proposes a method for determining the pattern of the RE of the CSI-RS port code division multiplexing in the case where the position of the constituent elements is discontinuous.

For example, a plurality of (Y, Z) elements have a gap in the frequency domain, and the pattern of the RE of the CSI-RS port code division multiplexing corresponds to a plurality of (Y, Z) elements having no gap in the frequency domain after the gap is eliminated. The CSI-RS port code division multiplexed RE has the same pattern; or multiple (Y, Z) elements have gaps in the time domain, and the CSI-RS port code division multiplexed RE pattern is after the gap is eliminated. A plurality of (Y, Z) elements having no gaps on the domain have the same pattern of REs corresponding to the CSI-RS port code division multiplexing; or a plurality of (Y, Z) elements have gaps in the frequency domain and the time domain, The pattern of the RE of the CSI-RS port code division multiplexing is the same as the pattern of the RE of the CSI-RS port code division multiplex corresponding to the plurality of (Y, Z) elements having no gap in the frequency domain and the time domain after the gap is excluded. .

An optional implementation manner of this embodiment is: the base station notifies the category of the subframe, and the pattern of the CSI-RS port code division multiplexed RE is indicated by the subframe type.

The pattern of REs of the CSI-RS port code division multiplexing is indicated by the subframe type information to save signaling overhead.

For example, the number of OFDM symbols occupied by the subframe control channel is indicated by the number of small time slots included in the subframe or by the ratio of uplink and downlink time slots.

An optional implementation manner of this embodiment is: a CSI-RS port code division multiplexed RE pattern is indicated by a number of OFDM symbols included in a subframe; a CSI-RS port code division multiplexed RE pattern and a subframe included OFDM The number of symbols has an association, and the pattern of REs of the CSI-RS port code division multiplexing is indicated by the number of OFDM symbols to save signaling overhead.

For example, the number of OFDM symbols is 1, indicating frequency domain code division multiplexing; or the number of OFDM symbols is less than or equal to 2, indicating frequency domain code division multiplexing; or, the number of OFDM symbols is equal to 4, indicating time domain code division multiplexing; or, OFDM The number of symbols is greater than or equal to 4, indicating time domain code division multiplexing; or, the number of OFDM symbols is located in a certain interval, indicating time domain and frequency domain code division multiplexing.

For another example, the number of OFDM symbols is a certain value, the code division multiplexing pattern is (Q, R)=(X, 1); or the number of OFDM symbols is a certain value, and the code division multiplexing pattern is (Q) , R) = (1, X); or the number of OFDM symbols is a certain range of values, the code division multiplexing pattern is (Q, R) = (X, 1); or the number of OFDM symbols is a certain range of values The code division multiplexing pattern is (Q, R) = (1, X); or the number of OFDM symbols is a certain value, and the code division multiplexing pattern is (Q, R) = (X/2, 2) Or the number of OFDM symbols is a certain value, the code division multiplexing pattern is (Q, R) = (2, X/2); or the number of OFDM symbols is a certain range of values, and the code division multiplexing pattern is (Q, R) = (X/2, 2); or the number of OFDM symbols is a certain range of values, and the code division multiplexed pattern is (Q, R) = (2, X/2).

An optional implementation manner of this embodiment is: a CSI-RS port code division multiplexed RE pattern is indicated by a subcarrier spacing class.

The CSI-RS port code division multiplexed RE pattern has an association with the subcarrier spacing class, and the subcarrier spacing class indicates the CSI-RS port code division multiplexed RE pattern to save signaling overhead.

For example, the carrier spacing is a certain value, the code division multiplexing pattern is (Q, R) = (X, 1); or the carrier spacing is a certain value, and the code division multiplexing pattern is (Q, R) = (1, X); or the carrier spacing is a certain range of values, the code division multiplexing pattern is (Q, R) = (X, 1); or the carrier spacing is a certain range of values, code division multiplexing The pattern is (Q, R) = (1, X); or the carrier spacing is a certain value, the code division multiplexing pattern is (Q, R) = (X/2, 2); or the carrier spacing is some For a specific value, the code division multiplexed pattern is (Q, R) = (2, X/2); or the carrier spacing is a certain range of values, and the code division multiplexed pattern is (Q, R) = (X) /2, 2); or the carrier spacing is a certain range of values, and the code division multiplexing pattern is (Q, R) = (2, X/2).

An optional implementation manner of the embodiment is: the base station notifies the terminal of the length information of the second pattern information and the channel state information pilot port code division multiplexing, wherein the second pattern occupies L subcarriers in the frequency domain, The second pattern occupies M OFDM symbols in the time domain, the length of the channel state information pilot port code division multiplexing is X, and the second pattern is a pattern of channel state information pilot resources for carrying channel state information pilots. The first pattern wherein the first pattern is determined by determining a first pattern from a joint indication of the information of the second pattern and the length X of the channel state information pilot port code division multiplexing.

In the case of determining the length of the channel state information pilot port code division multiplexing, the pattern of a channel state information pilot resource increases if it corresponds to the pattern of the resource unit RE of the plurality of channel state information pilot port code division multiplexing. The complexity of the system. The invention combines the pattern of the channel state information pilot resource and the length of the channel state information pilot port code division multiplexing to determine the pattern of the resource unit RE of the channel state information pilot port code division multiplexing, thereby reducing the complexity of the system. Improve power utilization.

For example, the code division multiplexing length is 2, the channel state information pilot resource pattern (L, M) = (4, 2), and the determined code division multiplexing pattern is (Q, R) = (1, 2) Or the code division multiplexing length is 2, the channel state information pilot resource pattern (L, M) = (2, 4), and the determined code division multiplexing pattern is (Q, R) = (1, 2) For example, the code division multiplexing length is 4, the channel state information pilot resource pattern (L, M) = (4, 4), and the determined code division multiplexing pattern is (Q, R) = (1, 4); or the code division multiplexing length is 8, the channel state information pilot resource pattern (L, M) = (8, 4), the determined code division multiplexing pattern is (Q, R) = (2, 4).

An optional implementation manner of this embodiment is that the first pattern is determined by the joint information of the M OFDM symbols occupied by the second pattern in the time domain and the length X of the channel state information pilot port code division multiplexing.

The invention determines the pattern of the resource unit RE of the channel state information pilot port code division multiplexing by combining the time domain length M of the pattern of the channel state information pilot resource and the length of the channel state information pilot port code division multiplexing. The complexity of the system improves power utilization.

For example, the code division multiplexing length is 2, the pattern time domain length of the channel state information pilot resource is M=2, and the determined code division multiplexing pattern is (Q, R)=(1, 2); or the code division is repeated. With a length of 2, the pattern time domain length of the channel state information pilot resource is M=4, and the determined code division multiplexing pattern is (Q, R)=(1, 2); for example, the code division multiplexing length is 4, the channel state information pilot resource pattern time domain length M = 4, the determined code division multiplexing pattern is (Q, R) = (1, 4); or the code division multiplexing length is 8, channel state information The pattern time domain length of the pilot resource is M=4, and the determined code division multiplexing pattern is (Q, R)=(2, 4).

An optional implementation manner of this embodiment is: the information of the channel state information pilot further includes information about whether the first pattern exists only in one OFDM symbol, where the terminal passes the second pattern information, the channel state information, the pilot port code. The length X of the division multiplexing, whether the first pattern exists only within one OFDM symbol, determines the first pattern indicated by the base station.

In some scenarios, the phase of the channel changes rapidly, and occupying multiple OFDM symbols in the code division multiplexed pattern distribution reduces the performance of channel estimation; by indicating whether the code division multiplexed pattern exists only in one OFDM symbol, It can improve the channel estimation performance in different scenarios, reduce the complexity of the system, and improve the power utilization.

For example, the base station explicitly indicates whether the first pattern exists only within one OFDM symbol by one bit, or indicates whether the first pattern exists only in one OFDM symbol by the phase tracking pilot; the code division multiplexed pattern exists in one OFDM symbol, channel state information The length X of the pilot port code division multiplexing indicates that the code division multiplexing pattern is (Q, R) = (1, X). Or the code division multiplexed pattern is not only present in one OFDM symbol, but is jointly indicated by the length X of the second pattern information and the channel state information pilot port code division multiplexing, for example, the code division multiplexing length is 2, and the channel state information is guided. The pattern of the frequency resource (L, M) = (4, 2), the determined code division multiplexing pattern is (Q, R) = (1, 2); or the code division multiplexing length is 2, the channel state information guide The pattern of the frequency resource (L, M) = (2, 4), the determined code division multiplexed pattern is (Q, R) = (1, 2); for example, the code division multiplexing length is 4, the channel state The pattern of information pilot resources (L, M) = (4, 4), the determined code division multiplexing pattern is (Q, R) = (1, 4); or the code division multiplexing length is 8, channel state The pattern of information pilot resources (L, M) = (8, 4), and the determined code division multiplexed pattern is (Q, R) = (2, 4).

An optional implementation manner of this embodiment is: using phase tracking pilots to indicate whether the first pattern exists only in one OFDM symbol, in one embodiment: the phase tracking pilot, if present, indicates the first The pattern exists only in one OFDM symbol; if the phase tracking pilot does not exist, it indicates that the first pattern does not exist only in one OFDM symbol.

The presence of the phase tracking pilot can indicate that the channel phase changes faster, so that the presence of the phase tracking pilot can indicate that the first pattern exists only within one OFDM symbol, thereby saving signaling overhead.

For example, the base station indicates that the channel state information pilot transmits the phase tracking pilot in the radio frame; or the base station indicates that the channel state information pilot transmits the phase tracking pilot; or the base station indicates the channel state information pilot and phase tracking. The pilots are at the same transmitting site location.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a storage medium (such as a read only memory (ROM, Read). -Only Memory)/Random Access Memory (RAM), including several instructions to enable a terminal device (which can be a mobile phone, computer, server, or network device) to execute the program. The method of the various embodiments is invented.

Example 2

A transmission apparatus for channel state information pilots is also provided in the embodiment of the present invention. The device is used to implement the above embodiments and preferred embodiments, and the description thereof has been omitted. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

3 is a schematic diagram of a transmission apparatus for channel state information pilots according to an embodiment of the present invention. As shown in FIG. 3, the apparatus may include a determining unit 32, a transmitting unit 34, and a transmitting unit 36.

a determining unit 32 configured to determine information of a channel state information pilot;

The channel state information pilot information includes at least a channel state information pilot port number and a first pattern, a channel state information pilot port configured to transmit a channel state information pilot, and the first pattern is a channel state information pilot port. a code division multiplexed resource unit RE pattern, a channel state information pilot resource is used to carry a channel state information pilot, and the channel state information pilot resource includes one or more constituent elements;

The sending unit 34 is configured to send information of the channel state information pilot to the terminal;

Transmitting unit 36 is configured to transmit channel state information pilots.

With the above embodiment, the determining unit determines the information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and the first pattern, and the channel state information pilot port is used for the transmission channel. The state information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, and the channel state information pilot resource is used to carry the channel state information pilot, and the channel state information pilot resource includes one or a plurality of component elements; the transmitting unit transmits the channel state information pilot information to the terminal; the transmitting unit transmits the channel state information pilot, thereby solving the related problem that the system of the channel state information pilot in the related art has high complexity and cannot fully utilize the power The technical problem realizes the technical effect of the channel state information pilot of the transmission port code division multiplexing.

In an embodiment, the sending unit performs joint coding on the channel state information pilot information in the following manner: jointly coding the number of channel state information pilot ports and the first pattern; or, in the channel state information pilot information When the class of the component elements of the channel state information pilot resource is further included, the number of channel state information pilot ports, the first pattern, and the class of the component elements are jointly coded.

In an embodiment, the channel state information pilot information further includes a class of the component, and a length of the channel state information pilot port code division multiplexing, wherein the sending unit includes: a first sending module, configured to send to the terminal The type of the component element and the channel state information The length of the pilot port code division multiplexing collectively indicates the first pattern; or the second transmission module is configured to transmit the number of CSI-RS ports to the terminal, the component class and channel Status Information The length of the pilot port code division multiplexing collectively indicates the first pattern.

In an embodiment, the sending unit comprises: a first notification module configured to notify two of the plurality of information to the terminal to indicate the first pattern by the two information of the notification, wherein the two information of the notification are combined The plurality of information includes Q subcarriers occupied by the first pattern in the frequency domain, R OFDM symbols occupied by the first pattern in the time domain, and length X of the channel state information pilot port code division multiplexing.

In an embodiment, the sending unit comprises: a second notifying module configured to notify the terminal of the number of constituent elements spanning the first pattern.

In an embodiment, the determining unit determines the first pattern in a manner that the positions of the REs of the first pattern port code division multiplexing are discontinuous: connecting the plurality of REs according to the current positional relationship of the plurality of REs, A first pattern formed by a plurality of REs after the connection is obtained.

In an embodiment, the sending unit comprises: a third notification module configured to notify the terminal of the category of the subframe to indicate the first pattern by the category of the subframe, wherein the subframe is a child used when the first pattern is transmitted. frame.

In an embodiment, the third notification module is further configured to notify the terminal of the number of OFDM symbols included in the subframe.

In an embodiment, the third notification module is further configured to notify the terminal of the interval size of the subcarriers used when transmitting the first pattern.

In an embodiment, the apparatus further includes: a notification unit configured to notify the terminal of the length information of the second pattern information and the channel state information pilot port code division multiplexing, wherein the second pattern is occupied in the frequency domain L subcarriers, the second pattern occupies M OFDM symbols in the time domain, the channel state information pilot port code division multiplexing length is X, and the second pattern is channel state information pilot for carrying channel state information pilots A pattern of resources, the first pattern in which the first pattern is determined by determining a first pattern from a joint indication of the information of the second pattern and the length X of the channel state information pilot port code division multiplexing.

An optional implementation manner of this embodiment is: the base station indicates the pattern information of the RE of the terminal CSI-RS port code division multiplexing by: notifying two of the following information: CSI-RS port code division multiplexing RE The pattern occupies the Q subcarrier in the frequency domain, and the pattern of the RE of the CSI-RS port code division multiplexes R OFDM symbols in the time domain, and the length of the CSI-RS port code division multiplexing is X; The two pieces of information are jointly encoded.

Two of the three parameters Q, R, and Z are jointly encoded and notified.

For example, a plurality of (Y, Z) elements have a gap in the frequency domain, and the pattern of the RE of the CSI-RS port code division multiplexing corresponds to a plurality of (Y, Z) elements having no gap in the frequency domain after the gap is eliminated. The CSI-RS port code division multiplexed RE has the same pattern; or multiple (Y, Z) elements have gaps in the time domain, and the CSI-RS port code division multiplexed RE pattern is after the gap is eliminated. A plurality of (Y, Z) elements having no gaps in the domain have the same pattern of REs corresponding to the CSI-RS port code division multiplexing; or a plurality of (Y, Z) elements have gaps in the frequency domain and the time domain, The pattern of the RE of the CSI-RS port code division multiplexing is the same as the pattern of the RE of the CSI-RS port code division multiplex corresponding to the plurality of (Y, Z) elements having no gap in the frequency domain and the time domain after the gap is excluded. .

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

Example 3

Embodiments of the present invention also provide a storage medium. In this embodiment, the above storage medium may be configured to store program code for performing the following steps:

S11. The base station determines information about channel state information pilots, where the channel state information pilot information includes at least a number of channel state information pilot ports and a first pattern, and the channel state information pilot port is used to transmit channel state information pilots. The first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state information pilot, and the channel state information pilot resource includes one or more constituent elements. ;

S12. The base station sends the channel state information pilot information to the terminal.

S13. The base station transmits a channel state information pilot.

In an embodiment, the storage medium is further configured to store program code for performing the following steps:

S21: jointly coding the number of channel state information pilot ports and the first pattern;

S22. When the information of the channel state information pilot further includes the component of the channel state information pilot resource, the number of the channel state information pilot port, the first pattern, and the category of the component are jointly coded.

In an embodiment, the foregoing storage medium may include, but is not limited to, a U disk, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.

In an embodiment, the processor performs, according to the stored program code in the storage medium, the base station determines information of the channel state information pilot, wherein the information of the channel state information pilot includes at least the number of channel state information pilot ports and the a pattern, a channel state information pilot port is used to transmit a channel state information pilot, and a first pattern is a pattern of a channel state information pilot port code division multiplexed resource unit RE, and a channel state information pilot resource is used to carry a channel state Information pilot, channel state information pilot resource includes one or more constituent elements; the base station transmits channel state information pilot information to the terminal; and the base station transmits channel state information pilot.

In an embodiment, the processor performs, according to the stored program code in the storage medium, jointly coding the number of channel state information pilot ports and the first pattern; or, the channel state information pilot information further includes a channel state. When the types of component elements of the information pilot resource are combined, the number of channel state information pilot ports, the first pattern, and the categories of the component elements are jointly encoded.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. In the above, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device for execution by the computing device, and in some cases may be performed in a different order than that illustrated herein. Or the steps described, either separately as individual integrated circuit modules, or as a plurality of modules or steps in a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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

Industrial applicability

In the embodiment of the present invention, the base station determines the channel state information pilot information, where the channel state information pilot information includes at least the channel state information pilot port number and the first pattern, and the channel state information pilot port is used. Transmitting the channel state information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state Information pilot, the channel state information pilot resource includes one or more constituent elements; the base station transmits information of the channel state information pilot to a terminal; and the base station transmits the channel state information pilot. In this way, the technical problem that the system of the transmission channel state information pilot is high in complexity and the power cannot be fully utilized in the related art is solved, and the technical effect of the channel state information pilot of the transmission port code division multiplexing is realized.

Claims

A method for transmitting channel state information pilots includes:

Determining, by the base station, information of pilot information of the channel state information, where the information of the channel state information pilot includes at least a number of channel state information pilot ports and a first pattern, the channel state information pilot port is used to transmit the channel a state information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state information pilot, The channel state information pilot resource includes one or more constituent elements;

Sending, by the base station, information about the channel state information pilot to the terminal;

The base station transmits the channel state information pilot.
The method of claim 1 wherein the information of the channel state information pilots is jointly encoded in the following manner:

Coupling the number of the channel state information pilot ports and the first pattern; or

And when the information of the channel state information pilot further includes a component of a channel state information pilot resource, performing the number of the channel state information pilot port, the first pattern, and a category of the component element. Joint coding.
The method according to claim 1, wherein said channel state information pilot information further comprises a class of component elements, said channel state information pilot port code division multiplexing length, wherein said base station transmits said channel The information of the status information pilot to the terminal includes:

Transmitting, by the base station, the first pattern by using a length of the component element sent to the terminal and a length of the channel state information pilot port code division multiplexing; or

The base station collectively indicates the first pattern by using the number of the channel state information pilot ports sent to the terminal, the type of the component element, and the length of the channel state information pilot port code division multiplexing.
The method according to claim 3, wherein said component elements occupy Y subcarriers in a frequency domain, occupy Z orthogonal frequency division multiplexing OFDM symbols in a time domain, and said channel state information pilot port code points The length of the multiplexing is X, X, Y, and Z are positive integers, wherein the first pattern is determined by:

In the case where Y is greater than Z, the first pattern occupies X subcarriers in the frequency domain and occupies 1 OFDM symbol in the time domain;

In the case where Y is smaller than Z, the first pattern occupies 1 subcarrier in the frequency domain and X OFDM symbols in the time domain;

In the case where Y is equal to Z, the first pattern occupies X subcarriers in the frequency domain, occupies 1 OFDM symbol in the time domain, or the first pattern occupies 1 subcarrier in the frequency domain, in the time domain. X OFDM symbols are occupied.
The method of claim 1, wherein the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, and the number of pilot states of the channel state information is N The length of the channel state information pilot port code division multiplexing is X, and the second pattern is a pattern of channel state information pilot resources used to carry the channel state information pilot, where The first pattern:

The number of subcarriers occupied by the first pattern in the frequency domain is Q=max(L*X/N, 1), where max() is a function of taking a maximum value;

The number of OFDM symbols occupied by the first pattern in the time domain is R=X/Q, where L, M, N, X, Q, and R are positive integers.
The method according to claim 1, wherein the transmitting, by the base station, the information of the channel state information pilot to the terminal comprises:

The base station notifies the terminal of two of the plurality of information to indicate the first pattern by two pieces of information, wherein the two pieces of information are jointly encoded, the plurality of information including the The first pattern has Q subcarriers occupied in the frequency domain, R OFDM symbols occupied by the first pattern in the time domain, and a length X of the channel state information pilot port code division multiplexing.
The method according to claim 1, wherein the transmitting, by the base station, the information of the channel state information pilot to the terminal comprises:

The base station notifies the terminal of the number of constituent elements spanned by the first pattern.
The method according to claim 1, wherein in the case where the positions of the REs of the first pattern port code division multiplexing are discontinuous, the first pattern is determined by:

A plurality of the REs are connected according to a current positional relationship of the plurality of REs, and the first pattern formed by the plurality of REs after the connection is obtained.
The method according to claim 1, wherein the transmitting, by the base station, the information of the channel state information pilot to the terminal comprises:

The base station notifies the terminal of the category of the subframe to indicate the first pattern by a category of the subframe, wherein the subframe is a subframe used when transmitting the first pattern.
The method according to claim 9, wherein the notifying the base station of the category of the subframe to the terminal includes:

The base station notifies the terminal of the number of OFDM symbols included in the subframe.
The method according to claim 9, wherein the notifying the base station of the category of the subframe to the terminal includes:

The base station notifies the terminal of the interval size of the subcarriers used when transmitting the first pattern.
The method of claim 1 wherein the method further comprises:

Transmitting, by the base station, information about the second pattern and the length information of the channel state information pilot port code division multiplexing to the terminal, where the second pattern occupies L subcarriers in a frequency domain, where the The second pattern occupies M OFDM symbols in the time domain, the channel state information pilot port code division multiplexing has a length of X, and the second pattern is a channel state information guide for carrying the channel state information pilot. a pattern of frequency resources, wherein the first pattern is determined by the combination of information of the second pattern and a length X of code division multiplexing with the channel state information pilot port The indication determines the first pattern.
The method according to claim 12, wherein the first pattern is code-multiplexed by the information of the M OFDM symbols occupied by the second pattern in the time domain and the length of the channel state information pilot port. The joint instruction is determined.
The method according to claim 12, wherein the information of the channel state information pilot further comprises information of whether the first pattern exists only in one OFDM symbol, wherein the terminal passes the second pattern information, The channel state information pilot port code division multiplexed length X, whether the first pattern exists only within one OFDM symbol determines the first pattern indicated by the base station.
The method of claim 14, wherein the base station indicates, by phase tracking pilot, whether the first pattern exists only in information within one OFDM symbol, wherein if the phase tracking pilot is present, indicating the first The pattern exists only within one OFDM symbol, if the phase tracking pilot does not exist, indicating that the first pattern does not exist only within one OFDM symbol.
A transmission device for channel state information pilots, comprising:

a determining unit, configured to determine information of a channel state information pilot, where the information of the channel state information pilot includes at least a number of channel state information pilot ports and a first pattern, the channel state information pilot port is used for Transmitting the channel state information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, and the channel state information pilot resource is used to carry the channel state information a pilot, the channel state information pilot resource comprising one or more constituent elements;

a sending unit, configured to send information about the channel state information pilot to the terminal;

And a transmitting unit configured to transmit the channel state information pilot.
The apparatus according to claim 16, wherein said transmitting unit jointly encodes information of said channel state information pilot in the following manner:

Coupling the number of the channel state information pilot ports and the first pattern; or

And when the information of the channel state information pilot further includes a component of a channel state information pilot resource, performing the number of the channel state information pilot port, the first pattern, and a category of the component element. Joint coding.
The apparatus according to claim 16, wherein the channel state information pilot information further comprises a class of component elements, and a length of the channel state information pilot port code division multiplexing, wherein the sending unit comprises:

a first sending module, configured to indicate the first pattern by using a length of the component element sent to the terminal and a length of the channel state information pilot port code division multiplexing; or

a second sending module, configured to indicate, by the number of the channel state information pilot ports sent to the terminal, the type of the component element, and the length of the channel state information pilot port code division multiplexing The first pattern.
The apparatus according to claim 18, wherein said component elements occupy Y subcarriers in a frequency domain, occupy Z orthogonal frequency division multiplexing OFDM symbols in a time domain, and said channel state information pilot port code points The length of the multiplexing is X, X, Y, and Z are positive integers, wherein the first pattern is determined by:

In the case where Y is greater than Z, the first pattern occupies X subcarriers in the frequency domain and occupies 1 OFDM symbol in the time domain;

In the case where Y is smaller than Z, the first pattern occupies 1 subcarrier in the frequency domain and X OFDM symbols in the time domain;

In the case where Y is equal to Z, the first pattern occupies X subcarriers in the frequency domain, occupies 1 OFDM symbol in the time domain, or the first pattern occupies 1 subcarrier in the frequency domain, in the time domain. X OFDM symbols are occupied.
The apparatus according to claim 16, wherein the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, and the number of pilot states of the channel state information is N The length of the channel state information pilot port code division multiplexing is X, and the second pattern is a pattern of channel state information pilot resources used to carry the channel state information pilot, where The first pattern:

The number of subcarriers occupied by the first pattern in the frequency domain is Q=max(L*X/N, 1), where max() is a function of taking a maximum value;

The number of OFDM symbols occupied by the first pattern in the time domain is R=X/Q, where L, M, N, X, Q, and R are positive integers.
The apparatus of claim 16, wherein the transmitting unit comprises:

a first notification module, configured to notify two of the plurality of information to the terminal, to indicate the first pattern by two pieces of information, wherein the two pieces of information are jointly coded, the multiple The information includes Q subcarriers occupied by the first pattern in the frequency domain, R OFDM symbols occupied by the first pattern in the time domain, and a length X of the channel state information pilot port code division multiplexing.
The apparatus of claim 16, wherein the transmitting unit comprises:

The second notification module is configured to notify the terminal of the number of constituent elements spanned by the first pattern.
The apparatus according to claim 16, wherein said determining unit determines said first pattern in a case where a position of said RE of said first pattern port code division multiplexing is discontinuous:

A plurality of the REs are connected according to a current positional relationship of the plurality of REs, and the first pattern formed by the plurality of REs after the connection is obtained.
The apparatus of claim 16, wherein the transmitting unit comprises:

a third notification module, configured to notify the terminal of a category of the subframe, to indicate the first pattern by a category of the subframe, where the subframe is a child used when the first pattern is transmitted frame.
The apparatus of claim 24, wherein the third notification module is further configured to notify the terminal of the number of OFDM symbols included in the subframe.
The apparatus of claim 25, wherein the third notification module is further configured to notify the terminal of an interval size of subcarriers used when transmitting the first pattern.
The apparatus of claim 16 wherein said apparatus further comprises:

a notification unit, configured to notify, to the terminal, length information of the second pattern information and the channel state information pilot port code division multiplexing, wherein the second pattern occupies L subcarriers in a frequency domain, where The second pattern occupies M OFDM symbols in the time domain, the channel state information pilot port code division multiplexing has a length of X, and the second pattern is a channel state for carrying the channel state information pilot. a pattern of information pilot resources, wherein the first pattern is determined by the manner in which the information of the second pattern is code-multiplexed with the channel state information pilot port length X The joint indication determines the first pattern.
The apparatus according to claim 27, wherein said first pattern is code-multiplexed by the information of M OFDM symbols occupied by said second pattern in the time domain and said channel state information pilot port code-multiplexed The joint instruction is determined.
The apparatus according to claim 27, wherein the information of the channel state information pilot further comprises information of whether the first pattern exists only in one OFDM symbol, wherein the terminal passes the second pattern information, The channel state information pilot port code division multiplexed length X, whether the first pattern exists only within one OFDM symbol determines the first pattern indicated by the base station.
A storage medium, the storage medium comprising a stored program, wherein the program is executed to perform the transmission method of the channel state information pilot according to any one of claims 1 to 15.
A processor configured to execute a program; wherein the program is executed to perform the transmission method of the channel state information pilot according to any one of claims 1 to 15.
A base station includes: a processor, a memory, and a transceiver; wherein

The memory is configured to store executable instructions;

The transceiver is configured to perform information transceiving and communication according to control of the processor;

The processor is configured to perform the following operations:

Determining information of the channel state information pilot; wherein the information of the channel state information pilot includes at least a number of channel state information pilot ports and a first pattern, the channel state information pilot port is configured to transmit the channel state Information pilot, the first pattern is a pattern of the resource unit RE of the channel state information pilot port code division multiplexing, the channel state information pilot resource is used to carry the channel state information pilot, Channel state information pilot resources include one or more constituent elements;

Sending information of the channel state information pilot to the terminal;

Transmitting the channel state information pilot.
The base station of claim 32, wherein the processor is further configured to perform the following operations:

Coupling the number of the channel state information pilot ports and the first pattern;

And when the information of the channel state information pilot further includes a component of a channel state information pilot resource, performing the number of the channel state information pilot port, the first pattern, and a category of the component element. Joint coding.