CN108631989B

CN108631989B - Transmission method and device of channel state information pilot frequency of port code division multiplexing

Info

Publication number: CN108631989B
Application number: CN201710184663.7A
Authority: CN
Inventors: 李永; 吴昊; 蒋创新; 鲁照华; 李儒岳; 陈艺戬; 蔡剑兴
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2021-11-30
Anticipated expiration: 2037-03-24
Also published as: WO2018171683A1; CN108631989A

Abstract

The invention provides a method and a device for transmitting channel state information pilot frequency of port code division multiplexing. Wherein, the method comprises the following steps: the base station determines the information of the channel state information pilot frequency, wherein the information of the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency, the first pattern is a pattern of resource units (REs) of code division multiplexing of the channel state information pilot frequency ports, the 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 component elements; the base station sends the information of the channel state information pilot frequency to the terminal; the base station transmits a channel state information pilot. The invention solves the technical problems that the system for transmitting the channel state information pilot frequency in the related technology has high complexity and can not fully utilize the power.

Description

Transmission method and device of channel state information pilot frequency of port code division multiplexing

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting a channel state information pilot frequency for port code division multiplexing.

Background

Long Term Evolution (LTE)/Long Term Evolution Advanced (LTE-a) technology is the mainstream fourth generation mobile communication technology (4G). Channel state information pilot (CSI-RS) is introduced in LTE-a for the terminal to predict the channel state. The CSI-RS transmitted by adopting non-zero power is called as non-zero power CSI-RS (NZP CSI-RS); sometimes, in order to avoid generating interference, data transmission on some REs on the PDSCH needs to be avoided, and the CSI-RS is implemented by using a Zero-Power transmission CSI-RS (ZP CSI-RS), where the set of corresponding Resource units is a Zero-Power CSI-RS Resource (Zero Power CSI-RS Resource). Sometimes, in order to measure Interference, zero power is adopted to transmit CSI-RS, and at this time, the corresponding set of Resource elements is called Interference Measurement Resource (CSI-IM Resource, Channel-State Information-Interference Measurement Resource).

The CSI-RS configuration (CSI-RS configuration) indicates REs mapped by the CSI-RS, i.e., REs used for transmitting the CSI-RS, and the CSI-RS configuration sequence number is used for distinguishing different CSI-RS configurations. A CSI-RS subframe configuration (CSI reference signal subframe configuration) is used to indicate a subframe in which a CSI-RS transmission is located.

One CSI-RS configuration is a CSI-RS configuration under a certain number of antenna ports, for example, a CSI-RS configuration with a configuration serial number of 0 with a number of antenna ports of 8. Typically the configuration sequence number is the index number.

The related art supports CSI-RS with port numbers of 1,2, 4, 8, 12, 16, whose CSI-RS resource element pattern repeats on each PRB pair over a bandwidth range on a transmission subframe.

The CSI-RS resources (CSI-RS resources) with the port numbers of 1,2, 4 and 8 are formed by single CSI-RS configuration, and the CSI-RS resources with the port numbers of 12, 16, 20, 24, 28 and 32 are formed by aggregation of a plurality of CSI-RS configurations.

The base station or the terminal generally measures a channel state through a channel state measurement Process (CSI Process), one or more CSI-RS resources are generally configured under one CSI Process, and the terminal performs feedback according to the measurement on the CSI-RS.

In order to fully utilize power and improve the accuracy of channel measurement, the ports are divided into a plurality of small groups, and the ports in the small groups adopt a code division multiplexing mode.

The base station informs the terminal of the information about the CSI-RS through upper layer signaling, and the information comprises: a CSI-RS resource configuration identification number (CSI-RS resource configuration identity), a CSI-RS port number, a CSI-RS configuration, and a CSI-RS subframe configuration.

The development of production, life and scientific research technologies puts forward the demand on 5 th generation (5G) wireless communication technologies. The 5G wireless technology is characterized by a large bandwidth and a massive-MIMO beam technology, and needs to satisfy large data volume transmission, low delay transmission, object-object interconnection transmission, and transmission under high-speed movement. The 3GPP organises the research on nr (new radio) access technologies. The NR is adapted to a frequency range from 0.6GHz to 100GHz, the interval between subcarriers can be configured, the length of a subframe or a slot in a time domain can be configured, data can be transmitted in a configured OFDM symbol, the pattern and the position of a data demodulation pilot need to be configurable, and a beam can be changed from OFDM symbol to OFDM symbol, and even within the OFDM symbol. The introduction of the CSI-RS in NR is also required to support the measurement of channel state information, the management of beams, and the tracking of channel phase; the NR requires that the CSI-RS can adopt three transmission modes, namely periodic mode transmission, semi-persistent mode transmission and non-periodic mode transmission. In order to improve the power utilization efficiency of the CSI-RS, it is necessary to support code division multiplexing between ports. At present, no scheme for transmitting flexible and diverse patterns of channel state information pilot frequency and fully utilizing power exists.

Aiming at the technical problems that the system for transmitting the channel state information pilot frequency in the related technology has high complexity and cannot fully utilize the power, an effective solution is not provided at present.

Disclosure of Invention

The embodiment of the invention provides a method and a device for transmitting a channel state information pilot frequency of port code division multiplexing, which at least solve the technical problems that the system for transmitting the channel state information pilot frequency in the related technology has high complexity and cannot fully utilize power.

According to an aspect of the embodiments of the present invention, there is provided a method for transmitting a channel state information pilot frequency of port code division multiplexing, the method including: the base station determines the information of the channel state information pilot frequency, wherein the information of the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency, the first pattern is a pattern of resource units (REs) of code division multiplexing of the channel state information pilot frequency ports, the 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 component elements; the base station sends the information of the channel state information pilot frequency to the terminal; the base station transmits a channel state information pilot.

Optionally, the information of the channel state information pilot is jointly coded in the following manner: jointly encoding the number of the channel state information pilot ports and the first pattern; or, when the information of the channel state information pilot frequency also includes the category of the component element of the channel state information pilot frequency resource, the number of the channel state information pilot frequency ports, the first pattern and the category of the component element are jointly coded.

Optionally, the channel state information pilot information further includes a category of a component and a length of code division multiplexing of a channel state information pilot port, where the sending, by the base station, information of the channel state information pilot to the terminal includes: the base station indicates a first pattern together through the category of the component element and the length of the channel state information pilot port code division multiplexing sent to the terminal; or, the base station indicates the first pattern together by the number of the channel state information pilot ports, the kind of the constituent elements, and the length of the channel state information pilot port code division multiplexing transmitted to the terminal.

Optionally, the constituent elements occupy Y subcarriers in a frequency domain, occupy Z OFDM symbols in a time domain, and a length of code division multiplexing of the channel state information pilot port is X, X, Y and Z are positive integers, wherein the first pattern is determined by: when Y is larger than Z, the first pattern occupies X subcarriers in the frequency domain and 1 OFDM symbol in the time domain; when Y is smaller than Z, the first pattern occupies 1 subcarrier in frequency domain and X OFDM symbols in time domain; in case Y is equal to Z, the first pattern occupies X subcarriers in the frequency domain and 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.

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

Optionally, the sending, by the base station, the information of the channel state information pilot to the terminal includes: the base station notifies two of a plurality of information to the terminal so as to indicate the first pattern through the notified two information, wherein the notified two information adopt joint coding, and the plurality of information comprise Q subcarriers occupied by the first pattern on a frequency domain, R OFDM symbols occupied by the first pattern on a time domain and a length X of code division multiplexing of a pilot port of the channel state information.

Optionally, the sending, by the base station, the information of the channel state information pilot to the terminal includes: the base station notifies the terminal of the number of constituent elements spanned by the first pattern.

Alternatively, in the case where the positions of the first pattern port code division multiplexed REs are discontinuous, the first pattern is determined by: and connecting the plurality of REs according to the current position relation of the plurality of REs to obtain a first pattern formed by the plurality of connected REs.

Optionally, the sending, by the base station, the information of the channel state information pilot to the terminal includes: and the base station informs the terminal of the category of the subframe so as to indicate the first pattern through the category of the subframe, wherein the subframe is used for transmitting the first pattern.

Optionally, the notifying, by the base station, 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.

Optionally, the notifying, by the base station, the category of the subframe to the terminal includes: the base station notifies the terminal of the size of the interval of the subcarriers used when transmitting the first pattern.

Optionally, the method further comprises: the base station informs the terminal of the information of a second pattern and the length information of code division multiplexing of a channel state information pilot frequency port, wherein the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, the length of code division multiplexing of the channel state information pilot frequency port is X, the second pattern is a pattern of channel state information pilot frequency resources for bearing channel state information pilot frequency, and the first pattern is determined by the following method: the first pattern is determined by information of the second pattern in combination with an indication of length X code-division multiplexed with the channel state information pilot port.

Optionally, the first pattern is determined by jointly indicating, by the length X of code division multiplexing of information of M OFDM symbols occupied by the second pattern in the time domain and the channel state information pilot port.

Optionally, the information of the channel state information pilot further includes information whether the first pattern exists only in one OFDM symbol, wherein the terminal determines the first pattern indicated by the base station through the second pattern information, the length X of code division multiplexing of the channel state information pilot port, and the information whether the first pattern exists only in one OFDM symbol.

Optionally, the base station indicates information whether the first pattern is present in only one OFDM symbol by the phase tracking pilot, wherein if the phase tracking pilot is present, it indicates that the first pattern is present in only one OFDM symbol, and if the phase tracking pilot is not present, it indicates that the first pattern is not present in only one OFDM symbol.

According to another aspect of the embodiments of the present invention, there is provided a device for transmitting a channel state information pilot frequency by port code division multiplexing, the device including: a determining unit, configured to determine information of a channel state information pilot, where the information of the channel state information pilot at least includes the number of channel state information pilot ports and a first pattern, the channel state information pilot ports are used to transmit the channel state information pilot, the first pattern is a pattern of resource units (REs) code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are used to carry the channel state information pilot, and the channel state information pilot resources include one or more constituent elements; a sending unit, configured to send information of channel state information pilot to a terminal; and the transmitting unit is used for transmitting the channel state information pilot frequency.

Optionally, the sending unit jointly codes the information of the channel state information pilot frequency in the following manner: jointly encoding the number of the channel state information pilot ports and the first pattern; or, when the information of the channel state information pilot frequency also includes the category of the component element of the channel state information pilot frequency resource, the number of the channel state information pilot frequency ports, the first pattern and the category of the component element are jointly coded.

Optionally, the channel state information pilot information further includes a category of a component and a length of code division multiplexing of a channel state information pilot port, where the sending unit includes: a first transmitting module, configured to jointly indicate a first pattern by the category of the component element and the length of the channel state information pilot port code division multiplexing transmitted to the terminal; or, the second sending module is configured to indicate the first pattern jointly by the number of the csi pilot ports sent to the terminal, the category of the component element, and the length of the csi pilot port code division multiplexing.

Optionally, the sending unit includes: the first notifying module is configured to notify two pieces of information to the terminal, so as to indicate the first pattern through the two pieces of notified information, where the two pieces of notified information employ joint coding, and the pieces of information include Q subcarriers occupied by the first pattern in a frequency domain, R OFDM symbols occupied by the first pattern in a time domain, and a length X of code division multiplexing of a channel state information pilot port.

Optionally, the sending unit includes: and a second notification module for notifying the terminal of the number of the constituent elements spanned by the first pattern.

Alternatively, the determining unit may determine the first pattern by, in a case where the position of the RE code-division-multiplexed by the first pattern port is discontinuous: and connecting the plurality of REs according to the current position relation of the plurality of REs to obtain a first pattern formed by the plurality of connected REs.

Optionally, the sending unit includes: and the third informing module is used for informing the terminal of the category of the subframe so as to indicate the first pattern through the category of the subframe, wherein the subframe is a subframe used when the first pattern is transmitted.

Optionally, the third notifying module is further configured to notify the terminal of the number of OFDM symbols included in the subframe.

Optionally, the third notifying module is further configured to notify the terminal of the spacing size of the subcarriers used when the first pattern is transmitted.

Optionally, the apparatus further comprises: a notifying unit, configured to notify a terminal of length information of code division multiplexing of a channel state information pilot port and information of a second pattern, where the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, a length of code division multiplexing of the channel state information pilot port is X, the second pattern is a pattern of a channel state information pilot resource for carrying a channel state information pilot, and the first pattern is determined by: the first pattern is determined by information of the second pattern in combination with an indication of length X code-division multiplexed with the channel state information pilot port.

According to yet another embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program performs any one of the methods described above when executed.

According to yet another embodiment of the present invention, there is also provided a processor for executing a program, wherein the program executes to perform any one of the methods described above.

In the embodiment of the present invention, a base station determines information of a channel state information pilot, where the information of the channel state information pilot at least includes the number of channel state information pilot ports and a first pattern, the channel state information pilot ports are used to transmit the channel state information pilot, the first pattern is a pattern of resource units RE code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are used to carry the channel state information pilot, and the channel state information pilot resources include one or more constituent elements; the base station sends the information of the channel state information pilot frequency to the terminal; the base station transmits the channel state information pilot frequency, thereby solving the technical problems that the system for transmitting the channel state information pilot frequency in the related technology has high complexity and can not fully utilize the power, and realizing the technical effect of the channel state information pilot frequency of the code division multiplexing of the transmission port.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a diagram of an alternative terminal for operating a transmission method of a channel state information pilot for port code division multiplexing according to an embodiment of the present invention;

fig. 2 is a flowchart of a transmission method of a channel state information pilot of port code division multiplexing according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a transmission apparatus of a port code division multiplexed channel state information pilot according to an embodiment of the present invention.

Detailed Description

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

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

The method provided by the first embodiment of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking a computer terminal (i.e. a computer terminal running on a base station) as an example, as shown in fig. 1, the computer terminal may include one or more (only one is shown in fig. 1) processors 101 (the processors 101 may include but are not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 103 for storing data, and a transmission device 105 for communication function. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration and is not intended to limit the structure of the electronic device.

The memory 103 may be used to store software programs and modules of application software, such as program instructions/modules corresponding to the control method of the device in the embodiment of the present invention, and the processor 101 executes various functional applications and data processing by running the software programs and modules stored in the memory 103, so as to implement the method described above. The memory may include high speed random access memory, and may 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 may further include memory located remotely from the processor, and these remote memories may be connected to the computer terminal through 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 transmission device is used for receiving or transmitting data via a network. Specific examples of the network 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 adapter (NIC) that can be connected to other Network devices through a base station to communicate with the internet. In one example, the transmission device may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.

In accordance with an embodiment of the present invention, there is provided a method embodiment of a method for transmitting a channel state information pilot by port code division multiplexing, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.

Fig. 2 is a flowchart of a transmission method of a port code division multiplexed 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, a base station determines information of a channel state information pilot frequency, wherein the information of the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency, the first pattern is a pattern of resource units (REs) of code division multiplexing of the channel state information pilot frequency ports, channel state information pilot frequency resources are used for bearing the channel state information pilot frequency, and the channel state information pilot frequency resources comprise one or more component elements;

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

step S206, the base station transmits the channel state information pilot frequency.

With the above embodiment, the base station determines information of a channel state information pilot, where the information of the channel state information pilot at least includes the number of channel state information pilot ports and a first pattern, the channel state information pilot ports are used to transmit the channel state information pilot, the first pattern is a pattern of resource units (REs) code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are used to carry the channel state information pilot, and the channel state information pilot resources include one or more constituent elements; the base station sends the information of the channel state information pilot frequency to the terminal; the base station transmits a channel state information pilot. . Therefore, the technical problems that the system for transmitting the channel state information pilot frequency in the related technology is high in complexity and cannot fully utilize power are solved, and the technical effect of transmitting the channel state information pilot frequency of the port code division multiplexing is achieved.

Alternatively, the main body of the above steps may be a base station, etc., but is not limited thereto.

The CSI-RS is transmitted on elements (REs), and the set of the elements (REs) transmitting the CSI-RS is a CSI-RS Resource pattern. The multiplexing mode of the CSI-RS ports on the REs comprises code division multiplexing, and the collection of the REs occupied by a group of ports for code division multiplexing is the pattern of the REs of the group of ports for code division multiplexing. The number of CSI-RS ports and the patterns of RE code division multiplexed by the ports can be known according to the CSI-RS information transmitted by the base station, and the terminal can know the channel states of how many ports to measure and from which RE pattern the channel state of the port code division multiplexed to measure.

For example: the number of CSI-RS ports may be a positive integer, e.g., may be 1,2, 4, 8, 12, 16, 24, 32, etc. The pattern of REs code-multiplexed by the CSI-RS ports may be represented as occupying Q subcarriers in the frequency domain, R OFDM symbols in the time domain, and simplified as an array (Q, R); for example, the pattern of code division multiplexed REs occupying CSI-RS ports with the number of REs of 2 may be (Q, R) ═ 2,1, or (Q, R) ═ 1, 2; the pattern of code division multiplexed REs occupying the CSI-RS port with the number of REs of 4 may be (Q, R) ═ 4,1, (Q, R) ═ 1,4, or (Q, R) ═ 2, 2; the pattern of code division multiplexed REs occupying the CSI-RS port with the number of REs of 8 may be (Q, R) ═ 8,1, (Q, R) ═ 1,8, (Q, R) ═ 4,2, or (Q, R) ═ 2, 4; the pattern of code-division multiplexed REs occupying the CSI-RS port with the number of REs of 16 may be (Q, R) ═ 16,1, (Q, R) ═ 1,16, (Q, R) ═ 8,2, (Q, R) ═ 2,8, or (Q, R) ═ 4, 4. Wherein Q and R are positive integers.

Optionally, the channel state information pilot information further includes a category of a component and a length of code division multiplexing of a channel state information pilot port, where the sending, by the base station, information of the channel state information pilot to the terminal includes: the base station indicates a first pattern together through the category of the component element and the length of the channel state information pilot port code division multiplexing sent to the terminal; or, the base station indicates the first pattern together by the number of the CSI-RS ports transmitted to the terminal, the types of the constituent elements, and the length of the channel state information pilot port code division multiplexing.

An optional implementation of this embodiment is: joint encoding is performed in one of the following ways: joint coding is carried out on the number of ports of the CSI-RS and patterns of RE code division multiplexed by the ports of the CSI-RS; the CSI-RS information further includes: the types of the component elements, wherein the number of ports of the CSI-RS, the pattern joint coding of the RE of the CSI-RS port code division multiplexing, and the type joint coding of the component elements; the CSI-RS Resource pattern is a set of elements (REs) that transmit CSI-RS, and is composed of elements. The element is a set of REs.

Patterns of REs possibly using CSI-RS port code division multiplexing are independent according to different numbers of CSI-RS ports, namely a certain number of CSI-RS ports and the patterns of the REs possibly using CSI-RS port code division multiplexing corresponding to the certain number of CSI-RS ports have correlation, so that signaling overhead can be saved by jointly coding the number of CSI-RS ports and the patterns of the REs possibly using CSI-RS port code division multiplexing; the number of ports of the CSI-RS, the pattern joint coding of the RE of the CSI-RS port code division multiplexing and the category of the component elements have correlation, so the signaling overhead can be saved by the number of ports of the CSI-RS, the pattern joint coding of the RE of the CSI-RS port code division multiplexing and the category joint coding of the component elements.

For example: the number of the CSI-RS ports is M2, the patterns of the code division multiplexing REs of the CSI-RS ports are N2, the combination state of the actual number of the CSI-RS ports and the patterns of the code division multiplexing REs of the CSI-RS ports is L2, and X2 serial numbers or states are adopted to indicate the number of the CSI-RS ports corresponding to CSI-RS resources and the patterns of the code division multiplexing REs of the CSI-RS ports, or X2 is L2; or L2< X2< M2 × N2, wherein the symbol "×" represents a multiplication operation.

Another optional implementation of this embodiment is: the CSI-RS information further includes: the category of the constituent elements and the length of code division multiplexing of the CSI-RS port; wherein the pattern of code division multiplexed REs of the CSI-RS port is indicated by one of the following ways: the method is jointly indicated by the category of the component elements and the length of code division multiplexing of the CSI-RS port; the number of ports of the CSI-RS, the types of the constituent elements and the length of code division multiplexing of the CSI-RS ports are jointly indicated.

The number of REs occupied by the pattern of the code division multiplexing REs of the CSI-RS ports is the length of the code division multiplexing of the CSI-RS ports. The categories of the constituent elements and the length of the code division multiplexing of the CSI-RS ports jointly determine the patterns of the code division multiplexing REs of the CSI-RS ports, so that the patterns of the code division multiplexing REs of the CSI-RS ports are jointly indicated by the categories of the constituent elements and the length of the code division multiplexing of the CSI-RS ports can save signaling overhead. The number of ports of the CSI-RS, the types of the constituent elements and the length of the code division multiplexing of the CSI-RS ports jointly determine the pattern of the code division multiplexing REs of the CSI-RS ports, so that the signaling overhead can be saved by jointly indicating the pattern of the code division multiplexing REs of the CSI-RS ports through the number of ports of the CSI-RS, the types of the constituent elements and the length of the code division multiplexing of the CSI-RS ports.

For example: the element is distinguished according to the subcarrier number Y contained in the frequency domain and the OFDM symbol number Z contained in the time domain, such as the distinguishing mode shown: (Y, Z) ═ 2,1, (Y, Z) ═ 1,2, (Y, Z) ═ 4,1, (Y, Z) ═ 2, (Y, Z) ═ 1,4, (Y, Z) ═ 8,1, (Y, Z) ═ 2,4, (Y, Z) ═ 1,8, (Y, Z) ═ 4, 2.

The element type is (Y, Z) ═ 2,1, the port code division multiplexing length is 2, and the pattern (Q, R) indicating the RE of the port code division multiplexing is (2, 1); or the element type is (Y, Z) ═ 1,2, the port code division multiplexing length is 2, and the pattern (Q, R) indicating the port code division multiplexed RE is (1, 2); or the element type is (Y, Z) ═ 4,1, the port code division multiplexing length is 2, and the pattern (Q, R) indicating the port code division multiplexed RE is (2, 1); or the element type is (Y, Z) ═ 1,4, the port code division multiplexing length is 2, and the pattern (Q, R) indicating the port code division multiplexed RE is (1, 2); or the element type is (Y, Z) ═ 2, the port code division multiplexing length is 2, and the pattern (Q, R) indicating the port code division multiplexed RE is (2, 1); the element type is (Y, Z) ═ 2, the port code division multiplexing length is 2, and the pattern (Q, R) indicating the port code division multiplexed RE is (1, 2); the element type is (Y, Z) ═ 4,1, the port code division multiplexing length is 4, and the pattern (Q, R) indicating the RE of the port code division multiplexing is (4, 1); or the element type is (Y, Z) ═ 1,4, the port code division multiplexing length is 4, and the pattern (Q, R) indicating the RE of the port code division multiplexing is (1, 4).

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

Another optional implementation of this embodiment is: the component elements occupy Y subcarriers in a frequency domain, and occupy Z OFDM symbols in time or in time, and the length of code division multiplexing of a CSI-RS port is X; the pattern of code division multiplexed REs for CSI-RS ports is indicated by: when Y is larger than Z, the RE pattern of the code division multiplexing of the CSI-RS port occupies X subcarriers in the frequency domain and occupies 1 OFDM symbol in the time domain; when Y is smaller than Z, the RE pattern of the code division multiplexing of the CSI-RS port occupies 1 subcarrier in the frequency domain and occupies X OFDM symbols in the time domain; under the condition of obtaining the element type and the length information of the code division multiplexing of the CSI-RS port, the pattern of the RE of the code division multiplexing of the port is indicated by the element type and the length of the code division multiplexing of the CSI-RS port, so that signaling overhead can be saved, and the sizes of Y and Z also indicate the direction of channel change, so that the pattern of the RE of the code division multiplexing of the port determined according to the scheme can also improve the performance of channel state estimation.

For example: the element is (Y, Z) ═ 2,1, the length of CSI-RS port code division multiplexing is X ═ 2, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 2, 1; the element is (Y, Z) ═ 1,2, the length of CSI-RS port code division multiplexing is X ═ 2, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 2; or, the element is (Y, Z) ═ 4,1, the length of CSI-RS port code division multiplexing is X ═ 2, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 2, 1; the element is (Y, Z) ═ 1,4, the length of CSI-RS port code division multiplexing is X ═ 2, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 2; or, the element is (Y, Z) ═ 4,1, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 4, 1; the element is (Y, Z) ═ 1,4, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 4; or, the element is (Y, Z) ═ 4,1, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 4, 1; the element is (Y, Z) ═ 1,4, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 4; or, the element is (Y, Z) ═ 4,2, the length of CSI-RS port code division multiplexing is X ═ 2, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 2, 1; the element is (Y, Z) ═ 2,4, the length of CSI-RS port code division multiplexing is X ═ 2, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 2; or, the element is (Y, Z) ═ 4,2, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 4, 1; the element is (Y, Z) ═ 2,4, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 4; or, the element is (Y, Z) ═ 4,2, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 4, 1; the element is (Y, Z) ═ 2,4, the length of CSI-RS port code division multiplexing is X ═ 4, and the pattern indicating the RE of CSI-RS port code division multiplexing is (Q, R) ═ 1, 4.

Another optional implementation of this embodiment is: the number of ports of the CSI-RS is N, the CSI-RS resource patterns occupy L subcarriers in frequency, M OFDM symbols in time domain, and the length of code division multiplexing of the CSI-RS ports is X; the pattern of code division multiplexed REs for CSI-RS ports is indicated by: the pattern of REs code-division multiplexed by the CSI-RS port occupies Q subcarriers in the frequency domain and R OFDM symbols in the time domain, wherein: q ═ max (L × X/N,1), R ═ X/Q. max () denotes taking the larger element; l, M, N, X, Q and R are positive integers.

By the information that the number of ports of the CSI-RS is N, the resource pattern of the CSI-RS occupies L subcarriers in frequency, M OFDM symbols in time domain and the length of code division multiplexing of the CSI-RS port is X, the pattern of RE of code division multiplexing of the CSI-RS port is indicated, so that signaling overhead can be saved, and the power of the CSI-RS port can be fully utilized.

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

An optional implementation of this embodiment is: the base station indicates the pattern information of RE code division multiplexed by the CSI-RS port of the terminal by adopting the following modes: two of the following information are notified: the method comprises the following steps that Q subcarriers are occupied by patterns of RE of code division multiplexing of a CSI-RS port in a frequency domain, R OFDM symbols are occupied by the patterns of the RE of code division multiplexing of the CSI-RS port in a time domain, and the length of the code division multiplexing of the CSI-RS port is X; and, the two notified pieces of information are jointly encoded.

Two of the three parameters Q, R and Z are jointly coded and informed.

For example: notification (Q, R), and joint coding; or (Q, X) is signaled and jointly encoded; or (R, X) is signaled and jointly coded.

An optional implementation of this embodiment is: the base station informs the terminal CSI-RS port of the pattern information of the code division multiplexing RE by adopting the following modes: the number of constituent elements across which the pattern of CSI-RS ports code division multiplexed REs spans.

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

For example, the CSI-RS port is informed whether the pattern of code division multiplexed REs is within one element, or the CSI-RS port is informed that the pattern of code division multiplexed REs spans 1 element, or 2 elements, or 4 elements.

An optional implementation of this embodiment is: in the case of discontinuous component element positions, the pattern of the RE code-division multiplexed by the CSI-RS port is obtained by the following method: excluding gaps between constituent elements, and obtaining the code division multiplexed RE pattern of the CSI-RS port under the condition of the constituent elements with continuous positions.

The pattern of CSI-RS port code division multiplexed REs after excluding the gaps between the elements is the same as the pattern of CSI-RS port code division multiplexed REs with consecutive element positions. The application provides a method for determining a pattern of RE of code division multiplexing of a CSI-RS port under the condition of discontinuous component element positions.

For example: the plurality of (Y, Z) elements have gaps in the frequency domain, and the patterns of the code division multiplexed REs of the CSI-RS ports are the same as the patterns of the code division multiplexed REs of the CSI-RS ports corresponding to the plurality of (Y, Z) elements without gaps in the frequency domain after the gaps are eliminated; or the plurality of (Y, Z) elements have gaps in the time domain, and the patterns of the RE code-division multiplexed by the CSI-RS ports are the same as the patterns of the RE code-division multiplexed by the CSI-RS ports corresponding to the plurality of (Y, Z) elements without gaps in the time domain after the gaps are eliminated; or the plurality of (Y, Z) elements have gaps in both frequency domain and time domain, and the patterns of the RE code-division multiplexed by the CSI-RS ports are the same as the patterns of the RE code-division multiplexed by the CSI-RS ports corresponding to the plurality of (Y, Z) elements without gaps in both frequency domain and time domain after the gaps are eliminated.

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

The pattern of REs code division multiplexed by the CSI-RS ports is indicated by subframe class information to save signaling overhead.

For example: the number of OFDM symbols occupied by the subframe control channel is indicated, or the number of mini-slots contained within the subframe is indicated, or the ratio of uplink and downlink slots is indicated.

An optional implementation of this embodiment is: the pattern of code division multiplexed REs of the CSI-RS port is indicated by the number of OFDM symbols contained in the subframe; the pattern of the code division multiplexed REs of the CSI-RS ports has relevance to the number of OFDM symbols contained in the subframe, and the pattern of the code division multiplexed REs of the CSI-RS ports 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, the number of OFDM symbols is more 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 specific value, and the code division multiplexing pattern is (Q, R) ═ X, 1; or the number of OFDM symbols is a certain specific value, and the code division multiplexing pattern is (Q, R) ═ 1, X; or the number of OFDM symbols is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ X, 1; or the number of OFDM symbols is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ 1, X; or the number of OFDM symbols is a certain specific value, and the code division multiplexing pattern is (Q, R) ═ X/2, 2; or the number of OFDM symbols is a certain specific value, and the code division multiplexing pattern is (Q, R) ═ 2, X/2; or the number of OFDM symbols is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ X/2, 2; or the number of OFDM symbols is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ 2, X/2.

An optional implementation of this embodiment is: the pattern of code division multiplexed REs of the CSI-RS ports is indicated by the subcarrier spacing class.

The pattern of code division multiplexed REs of the CSI-RS ports is related to the subcarrier spacing class, and the pattern of code division multiplexed REs of the CSI-RS ports is indicated by the subcarrier spacing class so as to save signaling overhead.

For example: the carrier spacing is a specific value, and the code division multiplexing pattern is (Q, R) ═ X, 1; or the carrier interval is a certain value, and the code division multiplexing pattern is (Q, R) ═ 1, X; or the carrier interval is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ X, 1; or the carrier interval is a certain specific value range, and the code division multiplexing pattern is (Q, R) is (1, X); or the carrier interval is a certain value, and the code division multiplexing pattern is (Q, R) ═ X/2, 2; or the carrier interval is a certain value, and the code division multiplexing pattern is (Q, R) ═ 2, X/2; or the carrier interval is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ X/2, 2; or the carrier interval is a certain specific value range, and the code division multiplexing pattern is (Q, R) ═ 2, X/2.

An optional implementation of this embodiment is: the base station informs the terminal of the information of a second pattern and the length information of code division multiplexing of a channel state information pilot frequency port, wherein the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, the length of code division multiplexing of the channel state information pilot frequency port is X, the second pattern is a pattern of channel state information pilot frequency resources for bearing channel state information pilot frequency, and the first pattern is determined by the following method: the first pattern is determined by information of the second pattern in combination with an indication of length X code-division multiplexed with the channel state information pilot port.

Under the condition of determining the length of code division multiplexing of the channel state information pilot port, if one pattern of the channel state information pilot resource corresponds to the patterns of resource units RE of the code division multiplexing of various channel state information pilot ports, the complexity of the system can be increased. The invention determines the resource unit RE pattern of the channel state information pilot frequency port code division multiplexing through the combination of the channel state information pilot frequency resource pattern and the channel state information pilot frequency port code division multiplexing length, thereby reducing the complexity of the system and improving the power utilization rate.

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

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

The invention determines the pattern of the resource unit RE code-division multiplexed by the channel state information pilot frequency port by combining the time domain length M of the pattern of the channel state information pilot frequency resource and the code-division multiplexed length of the channel state information pilot frequency port, thereby reducing the complexity of the system and improving the power utilization rate.

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

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

In some scenarios, the phase change of the channel is fast, and the performance of channel estimation is reduced when a plurality of OFDM symbols are occupied by the distribution of code division multiplexing patterns; by indicating whether the code division multiplexing pattern only exists in one OFDM symbol, the channel estimation performance under different scenes can be improved, the complexity of the system can be reduced, and the power utilization rate can be improved.

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 within one OFDM symbol by the phase tracking pilot; the code division multiplexing pattern exists in one OFDM symbol, and the length X of the code division multiplexing of the channel state information pilot port indicates that the code division multiplexing pattern is (Q, R) ═ 1, X. Or the code division multiplexing pattern not only exists in one OFDM symbol, and is jointly indicated by the second pattern information and the length X of the channel state information pilot port code division multiplexing, for example, the code division multiplexing length is 2, the pattern (L, M) of the channel state information pilot resource is (4,2), and the determined code division multiplexing pattern is (Q, R) is (1, 2); or the code division multiplexing length is 2, the pattern (L, M) of the channel state information pilot resource is (2,4), and the determined code division multiplexing pattern is (Q, R) is (1, 2); for another example, the code division multiplexing length is 4, the pattern (L, M) of the channel state information pilot resource is (4,4), and the determined code division multiplexing pattern is (Q, R) is (1, 4); or the code division multiplexing length is 8, the pattern (L, M) of the channel state information pilot resource is (8,4), and the determined code division multiplexing pattern is (Q, R) is (2, 4).

An optional implementation of this embodiment is: information indicating whether the first pattern exists in only one OFDM symbol using the phase tracking pilot, specifically: the phase tracking pilot, if present, indicates that the first pattern is present in only one OFDM symbol; the phase tracking pilot, if not present, indicates that the first pattern is not present in only one OFDM symbol.

The presence of the phase tracking pilot can indicate that the channel phase is changing faster, so that the presence of the phase tracking pilot can be used to indicate that the first pattern is only present within one OFDM symbol, thereby saving signaling overhead.

For example, the base station indicates that the phase tracking pilot is transmitted in the wireless frame of the channel state information pilot transmission; or the base station indicates the carrier wave transmitted by the channel state information pilot frequency to transmit the phase tracking pilot frequency; or, the base station indicates that the channel state information pilot and the phase tracking pilot are in the same transmitting site position.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

Example 2

The embodiment of the invention also provides a device for transmitting the channel state information pilot frequency of the port code division multiplexing. The device is used for implementing the above embodiments and preferred embodiments, and the description of the device is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 3 is a schematic diagram of a transmission apparatus of a port code division multiplexed channel state information pilot according to an embodiment of the present invention. As shown in fig. 3, the apparatus may include: a determination unit 32, a sending unit 34 and a transmitting unit 36.

A determining unit 32, configured to determine information of a channel state information pilot, where the information of the channel state information pilot at least includes the number of channel state information pilot ports and a first pattern, the channel state information pilot ports are used to transmit the channel state information pilot, the first pattern is a pattern of resource units RE code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are used to carry the channel state information pilot, and the channel state information pilot resources include one or more constituent elements;

a sending unit 34, configured to send information of a channel state information pilot to a terminal;

a transmitting unit 36, configured to transmit a channel state information pilot.

With the above embodiment, the determining unit determines the information of the channel state information pilot, where the information of the channel state information pilot at least includes the number of channel state information pilot ports and a first pattern, the channel state information pilot ports are used to transmit the channel state information pilot, the first pattern is a pattern of resource units RE code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are used to carry the channel state information pilot, and the channel state information pilot resources include one or more constituent elements; the sending unit sends the information of the channel state information pilot frequency to the terminal; the transmitting unit transmits the channel state information pilot frequency, thereby solving the technical problems that the system for transmitting the channel state information pilot frequency in the related technology has high complexity and can not fully utilize the power, and realizing the technical effect of the channel state information pilot frequency of the code division multiplexing of the transmission port.

Optionally, the channel state information pilot information further includes a category of a component and a length of code division multiplexing of a channel state information pilot port, where the sending unit includes: a first transmitting module, configured to jointly indicate a first pattern by the category of the component element and the length of the channel state information pilot port code division multiplexing transmitted to the terminal; or, the second sending module is used for indicating the first pattern through the number of the CSI-RS ports sent to the terminal, the types of the constituent elements and the length of the code division multiplexing of the channel state information pilot port.

Two of the three parameters Q, R and Z are jointly coded and informed.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

Example 3

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

s11, the base station determines the information of the channel state information pilot frequency, wherein the information of the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency, the first pattern is a pattern of resource units (REs) of the channel state information pilot frequency ports in code division multiplexing, the channel state information pilot frequency resources are used for bearing the channel state information pilot frequency, and the channel state information pilot frequency resources comprise one or more component elements;

s12, the base station sends the information of the channel state information pilot frequency to the terminal;

s13, the base station transmits a channel state information pilot.

Optionally, the storage medium is further arranged to store program code for performing the steps of:

s21, jointly encoding the number of the channel state information pilot ports and the first pattern;

s22, when the information of the csi pilot further includes the type of the component of the csi pilot resource, the number of csi pilot ports, the first pattern, and the type of the component are jointly encoded.

Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the base station determines the information of the channel state information pilot frequency, wherein the information of the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency, the first pattern is a pattern of resource units (REs) of code division multiplexing of the channel state information pilot frequency ports, the 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 component elements; the base station sends the information of the channel state information pilot frequency to the terminal; the base station transmits a channel state information pilot.

Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: jointly encoding the number of the channel state information pilot ports and the first pattern; or, when the information of the channel state information pilot frequency also includes the category of the component element of the channel state information pilot frequency resource, the number of the channel state information pilot frequency ports, the first pattern and the category of the component element are jointly coded.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for transmitting a channel state information pilot frequency of port code division multiplexing, which is characterized by comprising the following steps:

a base station determines information of a channel state information pilot frequency, wherein the information of the channel state information pilot frequency at least comprises the number of channel state information pilot frequency ports and a first pattern, the channel state information pilot frequency ports are used for transmitting the channel state information pilot frequency, the first pattern is a pattern of resource units (REs) code division multiplexed by the channel state information pilot frequency ports, the channel state information pilot frequency resources are used for bearing the channel state information pilot frequency, and the channel state information pilot frequency resources comprise one or more component elements;

the base station sends the information of the channel state information pilot frequency to a terminal;

the base station transmits the channel state information pilot frequency;

the channel state information pilot frequency information also comprises the types of the components and the code division multiplexing length of the channel state information pilot frequency port;

the base station sending the information of the channel state information pilot frequency to the terminal comprises the following steps:

the base station indicates the first pattern together by the category of the component element and the length of the channel state information pilot port code division multiplexing sent to the terminal; the component elements occupy Y subcarriers in a frequency domain and Z OFDM symbols in a time domain, the length of code division multiplexing of the channel state information pilot frequency port is X, and X, Y and Z are positive integers;

wherein the first pattern is determined by:

when Y is larger than Z, the first pattern occupies X subcarriers in a frequency domain and occupies 1 OFDM symbol in a time domain;

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

and when Y is equal to Z, the first pattern occupies X subcarriers in a frequency domain and 1 OFDM symbol in a time domain, or the first pattern occupies 1 subcarrier in the frequency domain and X OFDM symbols in the time domain.

2. The method of claim 1, wherein the information of the channel state information pilot is jointly coded by:

jointly encoding the number of channel state information pilot ports and the first pattern; or the like, or, alternatively,

and when the information of the channel state information pilot frequency also comprises the category of the component element of the channel state information pilot frequency resource, carrying out joint coding on the number of the channel state information pilot frequency ports, the first pattern and the category of the component element.

3. The method of claim 1, wherein the base station sending the information of the channel state information pilot to the terminal comprises:

the base station indicates the first pattern together by the number of the channel state information pilot frequency ports, the types of the constituent elements and the length of the code division multiplexing of the channel state information pilot frequency ports, which are sent to the terminal;

a second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, the number of the channel state information pilot ports is N, the length of code division multiplexing of the channel state information pilot ports is X, the second pattern is a pattern of channel state information pilot resources for carrying the channel state information pilot, wherein the first pattern is determined by:

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

the first pattern occupies a number of OFDM symbols in the time domain, R = X/Q, where L, M, N, X, Q and R are positive integers.

4. The method of claim 1, wherein the base station sending 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.

5. The method of claim 1, further comprising:

the base station notifies the terminal of information of a second pattern and length information of code division multiplexing of the channel state information pilot frequency port, wherein the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, the length of code division multiplexing of the channel state information pilot frequency port is X, the second pattern is a pattern of channel state information pilot frequency resources for carrying the channel state information pilot frequency, and the first pattern is determined by the following method: determining a first pattern from information of a second pattern and a joint indication of length X code-division multiplexed with the CSI pilot port;

wherein, the information of M OFDM symbols occupied by the second pattern in the time domain and the length X of the code division multiplexing of the channel state information pilot frequency port jointly indicate to determine the first pattern;

when the code division multiplexing length is 2 and the pattern time domain length M = 2 of the channel state information pilot resource, the determined code division multiplexing pattern is (Q, R) ═ 1, 2; or when the code division multiplexing length is 2 and the pattern time domain length M =4 of the channel state information pilot resource, the determined code division multiplexing pattern is (Q, R) ═ 1, 2; or when the code division multiplexing length is 4 and the pattern time domain length M of the channel state information pilot resource is =4, the determined code division multiplexing pattern is (Q, R) ═ 1, 4; or when the code division multiplexing length is 8 and the pattern time domain length M of the channel state information pilot resource is =4, the determined code division multiplexing pattern is (Q, R) ═ 2, 4;

or, in case that the information of the channel state information pilot further includes information whether the first pattern exists only in one OFDM symbol, the terminal determines the first pattern indicated by the base station through second pattern information, length X of code division multiplexing of the channel state information pilot port, and information whether the first pattern exists only in one OFDM symbol;

when the code division multiplexing pattern exists in one OFDM symbol, the length of the code division multiplexing of the channel state information pilot frequency port is X, and the code division multiplexing pattern is indicated to be (Q, R) is (1, X);

when the code division multiplexing pattern not only exists in one OFDM symbol, the code division multiplexing pattern is jointly indicated by second pattern information and the length X of the channel state information pilot frequency port code division multiplexing;

wherein, in a case where the length X of the csi pilot port code division multiplexing is 2 and the second pattern (L, M) = (4,2), the first pattern determined is (Q, R) = (1, 2); or when the length X of code division multiplexing of the csi pilot port is 2 and the second pattern (L, M) = (2,4), the first pattern determined is (Q, R) = (1, 2); or, when the length X of code division multiplexing of the csi pilot port is 4 and the second pattern (L, M) = (4,4), the determined first pattern is (Q, R) = (1, 4); or in the case that the length X of code division multiplexing of the csi pilot port is 8, and the first pattern (L, M) = (8,4), the determined first pattern is (Q, R) = (2,4), where Q is the number of subcarriers occupied by the first pattern in the frequency domain, and R is the number of OFDM symbols occupied by the first pattern in the time domain.

6. The method of claim 5, wherein the base station indicates information whether the first pattern exists only within one OFDM symbol via a phase tracking pilot, wherein if the phase tracking pilot exists, the first pattern is indicated to exist only within one OFDM symbol, and if the phase tracking pilot does not exist, the first pattern is indicated not to exist only within one OFDM symbol.

7. A device for transmitting a channel state information pilot frequency of a port code division multiplexing, comprising:

a determining unit, configured to determine information of a channel state information pilot, where the information of the channel state information pilot at least includes a number of channel state information pilot ports and a first pattern, the channel state information pilot ports are configured to transmit the channel state information pilot, the first pattern is a pattern of resource units (REs) code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are configured to carry the channel state information pilot, and the channel state information pilot resources include one or more constituent elements;

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

a transmitting unit, configured to transmit the channel state information pilot;

the transmission unit includes:

a first sending module, configured to jointly indicate the first pattern by the category of the component element and the length of the channel state information pilot port code division multiplexing sent to the terminal; the component elements occupy Y subcarriers in a frequency domain and Z OFDM symbols in a time domain, the length of code division multiplexing of the channel state information pilot frequency port is X, and X, Y and Z are positive integers;

wherein the first pattern is determined by:

8. The apparatus of claim 7, wherein the sending unit jointly codes the information of the csi pilots in the following manners:

9. The apparatus of claim 7, wherein the sending unit further comprises:

a second sending module, configured to jointly indicate the first pattern by the number of the csi pilot ports, the category of the component element, and the length of the csi pilot port code division multiplexing sent to the terminal;

10. The apparatus of claim 7, wherein the sending unit comprises:

and a second notification module for notifying the terminal of the number of the constituent elements spanned by the first pattern.

11. The apparatus of claim 7, further comprising:

a notifying unit, configured to notify the terminal of length information code division multiplexed by a second pattern and the channel state information pilot port, where the second pattern occupies L subcarriers in a frequency domain, the second pattern occupies M OFDM symbols in a time domain, a length of code division multiplexed by the channel state information pilot port is X, the second pattern is a pattern of channel state information pilot resources for carrying the channel state information pilot, and the first pattern is determined by: determining a first pattern from information of a second pattern and a joint indication of length X code-division multiplexed with the CSI pilot port;

12. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when running, performs the method of any of claims 1 to 6.

13. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 6.

14. A base station, comprising:

a processor;

a memory for storing the processor-executable instructions;

a transmission device for performing information transceiving communication according to the control of the processor;

wherein the processor is configured to perform the following operations:

determining information of a channel state information pilot, wherein the information of the channel state information pilot at least includes the number of channel state information pilot ports and a first pattern, the channel state information pilot ports are used for transmitting the channel state information pilot, the first pattern is a pattern of resource units (REs) code-division multiplexed by the channel state information pilot ports, the channel state information pilot resources are used for carrying the channel state information pilot, and the channel state information pilot resources include one or more constituent elements;

sending the information of the channel state information pilot frequency to a terminal;

transmitting the channel state information pilot;

the sending the information of the channel state information pilot frequency to the terminal comprises the following steps:

the first pattern is indicated by the category of the constituent element and the length of the channel state information pilot port code division multiplexing transmitted to the terminal; the component elements occupy Y subcarriers in a frequency domain and Z OFDM symbols in a time domain, the length of code division multiplexing of the channel state information pilot frequency port is X, and X, Y and Z are positive integers;

wherein the first pattern is determined by:

15. The base station of claim 14, wherein the processor is further configured to perform the following operations

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