WO2018228335A1

WO2018228335A1 - Pilot signal sending and receiving methods and apparatuses, device, and storage medium

Info

Publication number: WO2018228335A1
Application number: PCT/CN2018/090658
Authority: WO
Inventors: 肖华华; 蒋创新; 李儒岳; 鲁照华; 吴昊
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-06-16
Filing date: 2018-06-11
Publication date: 2018-12-20
Also published as: CN108111270B; CN108111270A

Abstract

Embodiments of the present invention provide pilot signal sending and receiving methods and apparatuses, a device, and a storage medium. The pilot signal sending method comprises: determining parameters of a pilot signal according to exclusive information, and sending, over a pilot port, a pilot signal configured according to the parameters of the pilot signal.

Description

Pilot signal transmitting and receiving method and device, device and storage medium

Cross-reference to related applications

The present application is filed on the basis of the Chinese Patent Application No. PCT Application No. PCT Application No. .

Technical field

The present invention relates to the field of communications, and in particular to a method and device for transmitting and receiving pilot signals, a device, and a storage medium.

Background technique

In long-term evolution (LTE, Long Term Evolution) and wireless communication systems such as NR (New Radio), performing interference management and obtaining more accurate channel estimation are effective means to improve system performance, and are also hot topics in wireless system research. . In particular, NR, and future wireless communication technologies, in order to achieve higher spectral efficiency, the distance between base stations is more dense, and the interference is more complicated and diverse than LTE, and higher requirements are placed on the reliability of data transmission. In order to achieve these goals, obtaining a more accurate channel estimation in order to obtain more accurate channel quality information measurement or data demodulation performance is a problem that must be solved. In order to obtain a more accurate channel estimation, it is necessary to minimize the interference on the pilot signal in design.

In the prior art, the base station transmits a System Information Block (SIB), and responds to a user random access (RA), paging, and sends a physical downlink control channel (Physical Downlink Control Channel, PDCCH). In the stage, in general, the base station does not know the channel conditions of the user and the interference situation of the user, so it is difficult to use a relatively complex multi-antenna interference suppression algorithm to suppress interference, and instead use a single-port transmission mode. 1 is a schematic diagram of a DMRS pilot pattern according to paging or random access enumerated in the related art. As shown in FIG. 1, after receiving a Demodulation Reference Signal (DMRS) sent by a base station, Channel estimation is performed by using the reference signals, and a channel carrying a data carrier of at least one of RA, paging, SIB, and PDCCH is estimated, so that information of at least one of RA, paging, SIB, and PDCCH is obtained by using the estimated channel. However, in order to obtain better demodulation performance, it is necessary to obtain a channel corresponding to the demodulation reference signal relatively accurately. Generally, in RA, Paging, and SIB or PDCCH transmission, the base station does not know the interference situation of the user, and it is difficult. A higher-level interference processing algorithm is used, so that the pilot signal corresponding to the RA, Paging, SIB, and PDCCH signals may be interfered by the user due to interference, so that the pilot signal is not well utilized for channel estimation or channel measurement, thereby The data carrier carrying the above signal is not well demodulated.

In addition, when transmitting data, the base station (first communication node) generally uses multi-antenna transmission in order to obtain higher spectral efficiency, and the user adopts multi-antenna reception to improve performance by spatial multiplexing. The multiplexing of multiple data layers, including multiplexing of different layers of a single user, or multiplexing of multi-user input and output, or joint transmission of multiple first communication nodes, requires multiple DMRS ports, multiple DMRSs. When code division multiplexing is possible between ports, if the channel is not flat or the time domain changes rapidly, there may be large interference between different ports. At the same time, the DMRS port may also be interfered by other cells, resulting in degraded demodulation performance, especially in scenarios where the user has more multiplexing, or more layer multiplexing, and the channel time domain or frequency domain changes faster. The demodulation performance will be further reduced.

Similarly, when channel state information measurement is performed on a channel state information reference signal (CSI-RS) and a sounding reference signal (SRS), there is also an interference problem similar to a demodulation reference signal.

In the related art, the problem that the interference is too large due to the unreasonable configuration of the pilot parameters, thereby causing the channel of the pilot to estimate the channel to be inaccurate, has not been proposed.

Summary of the invention

The embodiment of the invention provides a method and a device for transmitting and receiving a pilot signal, a device and a storage medium.

According to an embodiment of the present invention, a method for transmitting a pilot signal is provided, including:

Determining parameters of the pilot signal based on the proprietary information;

A pilot signal configured according to a parameter of the pilot signal is transmitted on a pilot port.

According to still another embodiment of the present invention, a pilot signal receiving method is further provided, including:

Receiving a pilot signal transmitted by the base station on the pilot port;

Determining a parameter of a pilot signal corresponding to the pilot signal.

According to still another embodiment of the present invention, a pilot signal transmitting apparatus is further provided, including:

a first determining module, configured to determine a parameter of the pilot signal according to the proprietary information;

And a sending module, configured to send, on the pilot port, a pilot signal configured according to a parameter of the pilot signal.

According to still another embodiment of the present invention, a pilot signal receiving apparatus is further provided, including:

a receiving module, configured to receive a pilot signal transmitted by the base station on the pilot port;

The second determining module is configured to determine a parameter of the pilot signal corresponding to the pilot signal.

According to still another embodiment of the present invention, a pilot signal transmission system including a base station and a terminal is further provided.

The base station is configured to determine a parameter of the pilot signal according to the proprietary information, and send, on the pilot port, a pilot signal configured according to a parameter of the pilot signal to the terminal;

The terminal is configured to receive the pilot signal transmitted by the base station on a pilot port, and determine a parameter of a pilot signal corresponding to the pilot signal.

According to still another embodiment of the present invention, there is also provided a storage medium comprising a stored program, wherein the program is executed to perform the method of any of the above.

According to still another embodiment of the present invention, there is also provided a processor configured to execute a program, wherein the program is executed to perform the method of any of the above.

According to the embodiment provided by the present invention, the parameter of the pilot signal is determined according to the proprietary information, and the pilot signal configured according to the parameter of the pilot signal is sent on the pilot port, so that the configuration of the pilot parameter is not solved in the related art. Reasonable and excessive interference, which causes the channel estimation using pilot estimation to be inaccurate and causes a problem of system performance degradation.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and constitute a part of the present invention, and the description of the embodiments of the present invention are intended to explain the technical solutions of the present invention, and do not constitute an inappropriate scope of the present invention. limited. In the drawing:

1 is a schematic diagram of a DMRS pilot pattern according to paging or random access enumerated in the related art;

2 is a block diagram showing the hardware structure of a mobile terminal receiving method of a pilot signal according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for transmitting a pilot signal according to an embodiment of the present invention; FIG.

4 is a flowchart of a method for receiving a pilot signal according to an embodiment of the present invention;

FIG. 5 is a block diagram of a pilot signal transmitting apparatus according to an embodiment of the present invention; FIG.

Figure 6 is a block diagram of a data demodulating apparatus according to an embodiment of the present invention;

7 is a schematic diagram of two configurations of pilot patterns in accordance with an embodiment of the present invention.

detailed description

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

It is to be noted that the terms "first", "second" and the like in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or a prior order.

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 mobile terminal as an example, FIG. 2 is a hardware structural block diagram of a mobile terminal according to a pilot signal receiving method according to an embodiment of the present invention. As shown in FIG. 2, the mobile terminal 10 may include one or more (only one shown) processor 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA). A memory 104 configured to store data and a transmission device 106 configured as a communication function. It will be understood by those skilled in the art that the structure shown in FIG. 2 is merely illustrative and does not limit the structure of the above electronic device. For example, the mobile terminal 10 may also include more or fewer components than those shown in FIG. 2, or have a different configuration than that shown in FIG. 2.

The memory 104 can be configured as a software program and a module for storing application software, such as program instructions/modules corresponding to the pilot signal receiving method in the embodiment of the present invention, and the processor 102 executes the software program and the module stored in the memory 104, thereby The above methods are implemented by performing various functional applications and data processing. Memory 104 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, memory 104 may further include memory remotely located relative to processor 102, which may be connected to mobile terminal 10 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.

Transmission device 106 is configured to receive or transmit data via a network. The above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, transmission device 106 can be a radio frequency (RF) module configured to communicate with the Internet in a wireless manner.

In this embodiment, a method for transmitting a pilot signal applied to a base station is provided. FIG. 3 is a flowchart of a method for transmitting a pilot signal according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

Step S302, determining parameters of the pilot signal according to the proprietary information;

Step S304, transmitting a pilot signal configured according to a parameter of the pilot signal on a pilot port.

Through the foregoing steps, determining the parameter value of the pilot signal according to the proprietary information, and transmitting the pilot signal configured according to the parameter of the pilot signal on the pilot port, can solve the unreasonable configuration of the pilot parameter in the related art. The interference is too large, so that the channel estimated by the pilot is inaccurate and causes a problem of system performance degradation.

In other embodiments, the pilot signal includes at least one of: a demodulation reference signal, a channel state information reference signal, and a sounding reference signal.

In other embodiments, the parameters of the pilot signal include at least one of: a cyclic shift sequence, an orthogonal cover code, a comb, a binding granularity of a pilot signal, and a pilot signal pattern.

In other embodiments, the proprietary information includes at least one of the following: a cell identifier, a beam identifier, a location of a physical downlink control channel, a quasi-co-location relationship, an indication information of a main information block, a scrambling sequence, and a downlink control information format. Size, carrier spacing, cyclic prefix length.

In other embodiments, transmitting a pilot signal configured according to a parameter of the pilot signal includes:

A pilot signal corresponding to a different pilot signal pattern is transmitted at different times, wherein the pilot signal pattern is a subset of a predefined pilot signal pattern.

In other embodiments, the transmission time ratio or transmission time of the different pilot signal patterns is signaled by the master information block.

In other embodiments, the different scrambling sequences or different downlink control information format sizes correspond to different pilot signal parameters, wherein the pilot signal parameters include a pilot signal pattern, an orthogonal cover code, and a comb. At least one of the cyclic shift sequences.

In other embodiments, the different scrambling sequence means that the scrambling sequence has different radio network temporary identification numbers, or the different scrambling sequences have the same radio network temporary identification number but cyclic redundancy. The mask is different.

In other embodiments, different subcarrier spacings or different cyclic prefixes correspond to parameters of different pilot signals, and the parameters of the pilot signals include pilot signal patterns, orthogonal cover codes, combs, and cyclic shift sequences. At least one of them.

In other embodiments, determining parameters of the pilot signal according to the proprietary information includes:

The proprietary information further includes carrier frequency information, a terminal capability, and a working state of the terminal, and determining parameters of the pilot signal according to at least one of the carrier frequency information, the terminal capability, and the working state of the terminal. The parameter of the pilot signal includes at least one of a pilot signal pattern, an orthogonal cover code, a comb, and a cyclic shift sequence.

In other embodiments, the location of the physical downlink control channel includes at least one of: transmitting a start symbol index of the physical downlink control channel, transmitting an end symbol index of the physical downlink control channel, and transmitting a start carrier of the physical downlink control channel. Index, the end carrier index of the physical downlink control channel is transmitted.

In other embodiments, the quasi-coordinate position relationship includes: a synchronization signal block index, and resource configuration information of the channel state information reference signal.

In other embodiments, the parameter values of the at least one of the following pilot signals are determined according to the indication information of the primary information block: a pilot signal pattern, a cyclic shift sequence, a comb, and an orthogonal cover code.

In other embodiments, the cyclic shift is determined according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a cyclic shift sequence number Ncs. The value of the bit sequence, wherein the Ncs is one of 2, 4, 6, 8, 12.

In other embodiments, the value of the comb is determined according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a comb number Ncb. Wherein, the Ncb is a value of one of 2, 3, 4, 6, 8, and 12.

In other embodiments, determining the positive according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and an orthogonal cover code sequence number Nocc. The value of the overlay code, wherein the Nocc is one of 2, 4, and 8.

In other embodiments, the value of the parameter cyclic shift sequence of the pilot signal is determined by at least one of a symbol index used to transmit the pilot signal and a comb used to transmit the pilot signal.

In other embodiments, the value of the parameter cyclic shift sequence of the pilot signal is determined by a user-specific cyclic shift sequence index, a semi-static cyclic shift sequence index, and a cyclic shift sequence number Ncs. The user-specific cyclic shift sequence index is signaled by the physical layer or higher layer, and the semi-static cyclic shift sequence index is notified by higher layer signaling.

In other embodiments, the value of the parameter orthogonal cover code of the pilot signal is determined by the index of the comb used to transmit the pilot signal.

In other embodiments, the port that transmits the pilot signal is divided into at least two pilot port groups, and at least two pilot port groups in the pilot port group have different binding granularities.

In other embodiments, the binding granularity of the pilot port group corresponding to the at least two different quasi-common position values is different;

The binding port groups of the at least two different transport blocks have different binding granularities;

The binding port groups of at least two different codewords have different binding granularities.

In other embodiments, at least one set of pilot port groups in the set of pilot ports is configured as a channel measurement, and at least one set of pilot port groups in the set of pilot ports is configured as interference measurement.

In other embodiments, the value of the cyclic shift sequence of the pilot port 1 is different from the value of the cyclic shift sequence of the pilot port 2, where the combing value of the pilot port 1 and the pilot port 2 are located. The values of the combs are different, and the value of the orthogonal cover code of the pilot port 1 is different from the value of the orthogonal cover code of the pilot port 2.

Example 2

The embodiment of the present invention further provides a method for receiving a pilot signal applied to the mobile terminal. FIG. 4 is a flowchart of a method for receiving a pilot signal according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

Step S402, receiving a pilot signal transmitted by the base station on the pilot port;

Step S404, determining parameters of the pilot signal corresponding to the pilot signal.

Through the foregoing steps, the pilot signal transmitted by the base station on the pilot port is received, and the parameter of the pilot signal corresponding to the pilot signal is determined, which may solve the problem that the interference of the pilot parameter is unreasonably arranged in the related art, thereby making the interference too large. The problem of system performance degradation caused by inaccurate channel estimation using pilot estimation.

In other embodiments, the parameters of the pilot signal include at least one of: a cyclic shift sequence, an orthogonal cover code, a comb, a bound granularity of a pilot, and a pilot signal pattern.

In other embodiments, different scrambling sequences or different downlink control information format sizes correspond to different pilot signal parameters, where the pilot signal parameters include a pilot signal pattern, one or more of the orthogonal cover codes. One.

In other embodiments, determining parameters of the pilot signal corresponding to the pilot signal includes:

Determining a value of the cyclic shift sequence according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a number of cyclic shift sequences Ncs, where The Ncs is a value of one of 2, 4, 6, 8, and 12.

Determining a comb value according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a comb number Ncb, wherein the Ncb is 2. One of the values of 3, 4, 6, 8, and 12.

Determining an orthogonal cover code according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, an SS block resource configuration information, a channel state information reference signal index, and an orthogonal cover code number Nocc, where The Nocc is one of 2, 4, and 8 values.

Receiving a pilot signal pattern sent by the base station by using primary information block information;

Determining an orthogonal cover code, a comb, and a value of at least one of the cyclic shift sequences according to the pilot signal pattern.

It should be noted that, in the embodiment of the present invention, the base station includes, but is not limited to, a macro base station, a micro base station, a pico base station, a home base station, a transmission node, a wireless hotspot, a home base station, and a wireless remote unit. Terminals include data cards, mobile phones, laptops, personal computers, tablets, personal digital assistants, Bluetooth and other devices.

The first communication node is a terminal in the uplink and a terminal in the downlink. The user is also referred to as a terminal.

For a more clear understanding of some concepts, definitions, and common concepts, definitions, rules, and principles.

The frequency domain resource includes one of a subcarrier, a subcarrier group (such as a physical resource block in LTE including 12 subcarriers, a physical resource block), and a subcarrier set (such as a subband in LTE), where the subcarrier group includes A plurality of subcarriers, the set of subcarriers including a plurality of subcarrier groups. For example, in LTE, or New Radio (NR), 12 subcarriers in the frequency domain are referred to as a physical resource block (PRB), and k physical resource blocks constitute a subband (SB), where K The size is related to the system bandwidth. Of course, different standards may have different ways of dividing, but in general, it includes multiple physical resource blocks.

The binding granularity of the pilot signal includes the frequency domain binding granularity M of the pilot signal and the time domain binding granularity L of the pilot signal. The frequency domain binding granularity of the pilot signal mainly refers to the frequency domain. The number of M consecutive subcarrier groups (such as LTE, PRB in NR) with the same precoding, or the number of consecutive M subcarrier sets (such as LTE, SB in NR). In the M subcarrier groups or subcarrier sets specified by the frequency domain bonding granularity of the pilot signal, since they have the same precoding, joint channel estimation, such as linear interpolation, can be performed. Similarly, the time domain binding granularity of the pilot is L consecutive symbols having the same precoding, or L consecutive symbol groups, wherein one symbol group includes multiple consecutive symbols, such as in LTE or NR. Slot.

The beam according to the embodiment of the present invention includes a transmit beam and a receive beam, a precoding, a precoding matrix, and a precoding matrix index. The beam may be a resource, such as a source precoding, a terminating precoding, an antenna port, and an antenna. The weight vector, the antenna weight matrix, etc., the beam sequence number can be replaced with a resource index because the beam can be bound to some time-frequency code resources for transmission. The beam may also be in a transmission (eg, transmit/receive) manner; the transmission manner may include space division multiplexing, frequency domain/time domain diversity, and the like.

The receiving beam indication means that the transmitting end can use the current reference signal and the antenna port to report the reference signal (or reference reference signal) reported by the UE and the quasi-co-location indicator (QCL) assumption of the antenna port. Give instructions. The receiving beam refers to a beam of the receiving end that does not need to be indicated, or a reference signal (or reference reference signal) that the transmitting end can report back to the UE through the current reference signal and the antenna port, and a quasi co-location (QCL) indication of the antenna port. Beam resources at the receiving end;

The beam pair includes a combination of a transmit beam indication and a receive beam indication.

The indications of the various parameters mentioned in the present invention may also be referred to as indexes, which are completely equivalent concepts, such as precoding matrix indication, may also be referred to as precoding matrix index, channel rank indication, and may also be referred to as channel. The rank index, the beam group indication may also be referred to as a beam group index.

The Orthogonal Cover Code (OCC) is a set of orthogonal code sequences used to distinguish different ports, terminals, and antennas in the code domain. For example, an OCC sequence of length Nocc=2 may be [1 1] and [1 -1], and an OCC of length Nocc=4 may have [1 1 1 1], [1 -1 1 -1], For example, [1 1 -1 -1], [1 -1 -1 1], etc., of course, there may be an OCC sequence of length Nocc=8.

The cyclic shift sequence (CS) may be a set of orthogonal or quasi-orthogonal sequences, each sequence having a length of N, and the preferred values of N may be 2, 4, 6, 8, 12, etc. For example, a cyclic shift sequence of length 4 can take four cases: [1 1 1 1], [1 j -1 -j], [1 -1 1 -1], [1 -j -1 j]. .

The comb comb of the pilot refers to dividing the frequency domain subcarrier into Ncb combs, each comb occupying 1/Ncb subcarriers of the total number of subcarriers, and is an equally spaced subcarrier. For example, if the subcarrier index is 0 to 11, then it is divided into two combs, the first comb is occupied by subcarriers of 0, 2, 4, 6, 8, 10 and other even subcarriers, and the second comb is subcarriers. A subcarrier having a value of 1 is taken by the 2 mode.

The value of the number of combs Ncb may be 2, 4, 6, or 8 values.

Quasi co-located (QCL), two antenna ports are called QCL, if a port conveys a symbol that the corresponding channel attribute can be derived from the channel attribute corresponding to the symbol conveyed by another antenna port (Definition) Of QCL is that two antenna ports are said to be quasi co-located if properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed.), In general, the two ports of the QCL are from the same transmission base station or node. Here, the channel attributes mentioned include, but are not limited to, average gain, delay spread, Doppler spread, Doppler shift, and average delay parameters. ), spatial user-receiving parameters (spatial UE-Rx parameters), and the like. The antenna port includes an end that is not limited to a DMRS pilot port or index, an SRS port or index, an SS block port or index, a CSI-RS port or an index. The QCL relationship includes at least one of CSI-RS resource configuration information and a synchronization signal block index (SS block index). The synchronization signal block index includes a primary synchronization signal block index and a secondary synchronization signal block index. The information channel state information reference signal resource configuration information includes at least one of the following information: a start symbol index of the CSI-RS, an end symbol index, a pattern, a density, a cyclic shift sequence of the pilot, an OCC, and the like.

Some other concepts or English names or abbreviations include: System Information Block (SIB); Master Information Block (MIB); Radio Network Temporary Identity (RNTI), where RNTI includes There are many types, system information RNTI (SI-RNTI), paging RNTI (P-RNTI), random access (RA) RNTI (RA-RNTI), etc., for the convenience of description, these are collectively referred to as X- RNTI. a synchronization signal (SS), including a primary synchronization signal (Prime SS) and a secondary synchronization signal (Secondary), the synchronization signal block index includes a Secondary Synchronization Signal Block Index (SS block index), a primary synchronization signal Prime Synchronization Signal block index (SS block index). The Cyclic Redundancy Check Mask (CRC mask) is used to determine whether the accepted transport block is successfully transmitted. Downlink Control Information (DCI) is used to transmit downlink control information. To ensure coverage, DCI is divided into different formats, different format sizes, and different channel coding rates. The working state of the terminal includes, but is not limited to, an idle state, an active state, or a discontinuous reception (DRX) state.

In addition, for the pilot signal, the pilot signal pattern has at least two main forms, including the pilot signal pattern configuration 1 and the pilot signal pattern configuration 2, wherein the pilot pattern configuration 1 is based on interval frequency division multiplexing ( Interval Freqeuncy Domaim Multipelxing, IFDM) pilot configuration, which divides the frequency domain subcarriers into multiple combs, and the pilot of one pilot port is sent only on one of the combs; FIG. 7 is based on A schematic diagram of two configurations of a pilot pattern according to an embodiment of the present invention is shown in FIG. 7. The pilot pattern configuration 2 is a pilot pattern based on a frequency domain-cover code (Freqeuncy Domaim Orthogonal Cover Code, FD-OCC). The pilot pattern uses adjacent Nocc subcarriers for transmitting pilot signals, wherein the pilot signals of different ports are distinguished by OCC, where Nocc is the sequence length of the OCC. It should be noted that, in the scope of the present case, the pilot signal, which may also be called a reference signal, is used for channel measurement or channel estimation, including but not limited to DMRS, CSI-RS, SRS, and the like.

For a better understanding of the embodiments of the present invention, the present invention is further explained below in conjunction with the embodiments. In the following examples, the transmitted pilot signals are all sent on the corresponding pilot ports, for example, the DMRS is in the DMRS pilot port. The CSI-RS is sent on the CSI-RS port, and the SRS is sent on the SRS port.

Example 1

This embodiment mainly describes that when the pilot signal is used to demodulate at least one of random access, paging, system information block, and physical downlink control channel, the proprietary information includes at least one of the following: Cell identity, beam identification, location of the physical downlink control channel, quasi-co-location relationship, indication information of the main information block, scrambling sequence, downlink control information format size, carrier spacing, cyclic prefix length, determined by the proprietary information Parameter information of the pilot signal. . Therefore, the channel estimation performance of the signal corresponding channel of at least one of the RA, the Paging, the SIB, and the PDCCH is enhanced by the terminal.

Method 1: Determine the value of the cyclic shift sequence

In a system including at least one base station or terminal, the base station and the terminal respectively perform the following operations to transmit and receive pilot information, thereby performing interference randomization to improve system performance.

Step 1: The base station according to the cell identification ID, the beam identification ID, the location of the physical downlink control channel PDCCH, the SS block index, the CSI-RS resource configuration information, one or more values in the X-RNTI, and the number of cyclic shift sequences N The cyclic shift sequence determines a value of the cyclic shift sequence, and sends a pilot signal carrying the cyclic shift sequence to the terminal according to the determined sequence corresponding to the value of the cyclic shift sequence as a cyclic shift sequence of the pilot. . The pilots here can be DMRS and CSI-RS, SRS.

The specific implementation method for the base station to determine the value of the cyclic shift sequence is, for example, determining the value of the cyclic shift sequence index according to the cell ID (assumed value Cid) and the N cyclic shift sequence as mod (Cid, N cyclic shift) Sequence), such as N cyclic shift sequence = 4, using the cell ID (assumed to be Cid) and the symbol start position of the PDCCH (taken as Ns)) and the N cyclic shift sequence to determine the value of the cyclic shift sequence index Is mod (Cid + Ns, N cyclic shift sequence), where mod represents a modulo operation. And determining the value of the cyclic shift sequence according to the cyclic shift sequence.

Determining an index or a value of a cyclic shift sequence by using values of other one or more cell-specific parameters and an N-cyclic shift sequence, and determining a cyclic shift sequence index or loop using only the cell ID and the N cyclic shift sequence The way the shift sequence takes values is similar and will not be explained here.

The modulo operation here can also be replaced by other operations, such as taking the remainder.

Step 2: The terminal receives the pilot signal sent by the base station, and according to the cell identifier ID, the beam identifier ID, the location of the physical downlink control channel PDCCH, the SS block index, one or more values in the CSI-RS resource configuration information, and the cyclic shift The number of bit sequence N cyclic shift sequence determines the value of the cyclic shift sequence, and estimates the channel Hp corresponding to the RE of the transmitted pilot signal by using the determined cyclic shift sequence and the received pilot signal, and estimates by using the Hp. The channel Hd corresponding to the data RE demodulates the data by Hd.

Here, the method of determining the value of the cyclic shift sequence is the same as that of step 1, and will not be described again.

The data may carry at least one of RA information, SIB information, paging information and the like.

Since the pilot sequences transmitted by each base station are different, the purpose of interference randomization is achieved, which improves the accuracy of channel estimation and improves the performance of data demodulation.

It should be noted that the X-RNTI is at least one of SI-RNTI, P-RNTI, and RA-RNTI.

Method 2: Determine the value of comb

In a system including at least one base station or terminal, the base station and the terminal respectively perform the following operations to transmit and receive pilot information, so that the pilot in which the partial interference is located and the Comb used in the pilot of the target channel are different, Reduce interference to improve system performance.

Step 1: The base station determines the Comb according to the cell identifier ID, the beam identifier ID, the location of the physical downlink control channel PDCCH, the SS block index, the CSI-RS resource configuration information, one or more values in the X-RNTI, and the number of Combs Ncb. Taking a value, and transmitting a pilot signal to the terminal on the subcarrier where the Comb corresponding to the determined Comb value is located. The pilots here can be DMRS and CSI-RS, SRS.

The specific implementation method for determining the value of the Comb by the base station is, for example, determining the value of Comb according to the cell ID (assumed to be Cid) and Ncb as mod (Cid, Ncb), such as using a cell ID (assumed to be Cid) and PDCCH. The starting position of the symbol (takes the value of Ns) and Ncb determine that Comb takes the value mod(Cid+Ns, Ncb), where mod represents the modulo operation.

The method for determining the value of the Comb by using the values of the other one or more cell-specific parameters and the Ncb is similar to the method for determining the value of the Comb by using only the cell ID and Ncb, and will not be described here.

It should be noted that, in other parts of the embodiment or other embodiments, the used SS block index includes a primary SS block index and a secondary SS block index, and the CSI-RS resource configuration information includes but is not limited to one of the following information. Value: CSI-RS start symbol index, end symbol index, pattern index, starting frequency domain carrier index, end frequency domain carrier index, pilot density index. The location of the PDCCH includes, but is not limited to, a value of one of the following parameters: a start symbol index of the PDCCH, an end symbol index of the PDCCH, a start carrier index of the PDCCH, and an end carrier index of the PDCCH.

Step 2: The terminal receives the pilot signal sent by the base station, and according to the cell identifier ID, the beam identifier ID, the location of the physical downlink control channel PDCCH, the SS block index, one or more values in the CSI-RS resource configuration information, and the Comb The number Ncb determines the value of the Comb, receives the pilot signal on the subcarrier corresponding to the Comb value, estimates the channel Hp corresponding to the RE transmitting the pilot signal by using the received pilot signal, and estimates the data RE by using the Hp. The channel Hd demodulates the data with Hd.

Here, the method of determining the value of Comb is the same as that of step 1, and will not be described again.

Since the interference and the Cob value of the target channel may be different, the interference on the pilot port is reduced to some extent, so that the interference cancellation can be facilitated to improve the performance of the channel estimation. .

Method 3: Determine the value of OCC

In a system including at least one base station or terminal, the base station and the terminal respectively perform the following operations to transmit and receive pilot information, so that the pilot used in the partial interference and the pilot used in the target channel are different in OCC. The interference is made more random without increasing the signaling overhead to improve the performance of the system.

Step 1: The base station determines the OCC according to the cell identifier ID, the beam identifier ID, the location of the physical downlink control channel PDCCH, the SS block resource configuration information, the CSI-RS index, one or more values in the X-RNTI, and the number of OCCs Nocc. And taking a value, and transmitting a pilot signal obtained by multiplying the determined OCC value and the pilot signal to the terminal. The pilots here can be DMRS and CSI-RS, SRS.

The specific implementation method for determining the value of the OCC by the base station is, for example, determining the value of the OCC according to the cell ID (assumed to be Cid) and Nocc as mod (Cid, Nocc), such as using a cell ID (assumed to be Cid) and a PDCCH. The starting position of the symbol (takes the value of Ns) and the Nocc determine the value of the OCC as mod (Cid + Ns, Nocc), where mod represents the modulo operation.

The method for determining the value of the OCC by using the value of the other one or more cell-specific parameters and the Nocc is similar to the method for determining the value of the OCC by using only the cell ID and the Nocc, and will not be described here.

Step 2: The terminal receives the pilot signal sent by the base station, and according to the cell identifier ID, the beam identifier ID, the location of the physical downlink control channel PDCCH, the SS block resource configuration information, one or more values in the CSI-RS index, and the OCC. The number Nocc determines the value of the OCC, estimates the channel Hp corresponding to the RE of the transmitted pilot signal at the determined OCC value and the received pilot signal, and estimates the channel Hd corresponding to the data RE by using the Hp, and demodulates the data by using Hd. .

Here, the method of determining the value of the OCC is the same as that of the step 1, and will not be described again.

Since the interference and the OCC value of the target channel may be different, the interference is randomized to some extent, similar to white noise, so that the interference cancellation can be facilitated to improve the performance of the channel estimation.

Method 4: Determine the pattern pattern of the pilot according to the information sent by the MIB

In a system including at least one base station or terminal, the base station and the terminal respectively perform the following operations to transmit and receive pilot information, so as to implement SC and OCC for pilots with partial interference and pilot signals of the target channel. At least one of Comb is different, reducing interference to improve system performance.

Step 1: The base station determines the pilot pattern, and transmits the MIB information to the terminal, determines the value of at least one of the OCC, Comb, and the cyclic shift sequence of the pilot according to the pilot pattern, and sends the pilot determined by the pilot pattern. . The pilots here can be DMRS and CSI-RS, SRS.

The pilot signal pattern includes an RE that transmits a pilot, such as a pilot pattern configuration 1 and an RE corresponding to the pilot pattern configuration 2.

Step 2: The terminal receives the MIB information, and determines a pilot pattern according to the MIB information, and determines, according to the pilot pattern, an OCC, a Comb, and a value of at least one of the cyclic shift sequences. And estimating, according to the value of at least one of the OCC, the Comb, the cyclic shift sequence, and the received pilot signal, the channel Hp corresponding to the RE of the transmission pilot signal, and using the Hp to estimate the channel Hd corresponding to the data RE, and using Hd to perform data on the data. demodulation.

Since the interference and the pilot pattern of the target channel may have different values, the interference is reduced to some extent, thereby improving the accuracy of the channel estimation, thereby improving the performance of data demodulation.

The value of at least two pilot parameters in the OCC, the cyclic shift sequence, and the Comb may be determined by using at least two of the methods 1, the method 2, the method 3, and the method 4 in the method described in this embodiment. The method is similar to determining only the OCC, cyclic shift sequence, and the value of one of the Combs. It is no longer exhaustive here.

It should be noted that the base station and the terminal may further determine the parameters of the pilot signal according to the scrambling code sequence, the size of the DCI format, the carrier spacing, the length of the cyclic prefix, the carrier frequency information, the terminal capability, and the working state of the terminal. The pilot signal parameter includes a pilot signal pattern, one or more of the OCCs, for example, different scrambling code sequences correspond to different pilot signal parameter values, or different DCI format sizes correspond to different pilot signals. The value of the parameter is different. Different carrier spacings correspond to different pilot signal parameters. Different cyclic prefix lengths correspond to different pilot signal parameters. Different carrier frequency sizes correspond to different pilot signal parameters. Different values. The terminal capability corresponds to different pilot signal parameters, and different working states correspond to different pilot parameters. For example, in the DRX state, a pilot pattern with a smaller pilot density is selected.

It should be noted that the data transmission and reception of the present embodiment, and the demodulation of data are not necessarily operations to be performed. In the following embodiments, the same is true, that is, data transmission and reception, and demodulation of data are not necessarily performed. Operation. It is only for the purpose of describing that the interference of the pilot is reduced or the channel estimation of the pilot itself is improved, and the performance of the demodulated data is greatly improved.

Example 2:

In this embodiment, the data is transmitted. In order to improve the accuracy of channel estimation, multiple parameters of the pilot are configured. Each parameter is orthogonal to each port as much as possible, so that the frequency domain is uneven or the time domain is rapidly changed. Channel estimation for different scenarios.

In this embodiment, the base station and the terminal implement the configuration of the pilot parameters by the following steps to improve the degree of freedom of channel estimation, thereby applying different channel scenarios.

Step 1: The base station configures the parameters of the pilot, sends the pilot corresponding to the pilot parameters configured by the base station, and performs data transmission.

Here, the parameters of the pilot include a cyclic shift sequence, Comb, OCC, etc., wherein the values of the cyclic shift sequence, Comb, and OCC satisfy the following characteristics: a pilot parameter cyclic shift sequence between pilot ports, Comb, OCC, At least two pilot parameters have different values.

For the case of two pilot ports, the cyclic shift sequence of pilot port 0 is different from the cyclic shift sequence of port 1. The Comb of pilot port 0 is different from the Comb of port 1, and the pilot port 0 is The cyclic shift sequence is different from the cyclic shift sequence of port 1, as shown in one of the four cases shown in Table 1.

Table 1

For the three-port case: the cyclic shift sequence of the pilot port 0 and the OCC are different from the cyclic shift sequence and the OCC value of the port 1, and the Comb and OCC of the pilot port 1 are different from the Comb and OCC values of the port 2, The cyclic shift sequence of pilot port 0 and Comb differ from the cyclic shift sequence of Port 2 and Comb. Or the cyclic shift sequence of the pilot port 0 and the OCC are different from the cyclic shift sequence and the OCC value of the port 1, and the Comb and the cyclic shift sequence of the pilot port 1 are different from the Comb and the cyclic shift sequence of the port 2. The OCC and Comb of the pilot port 0 are different from the OCC and Comb of the port 2, as shown in Table 2.

Table 2

For the case of four pilot ports: pilot port i and pilot port j have different values of at least two pilot parameters, where i, j = 0, 1, 2, 3, and i is not equal to j. Here, the pilot includes but is not limited to DMRS, SRS, CSI-RS

The pilot parameter OCC, the cyclic shift sequence, and the value of the Comb may be sent by the base station to the terminal through high layer signaling, or may be agreed by the terminal base station.

Step 2: The terminal receives the pilot signal transmitted by the base station, and determines the value of the pilot parameter corresponding to the pilot signal, and estimates the channel according to the value of the pilot parameter and the received pilot signal, and according to The estimated channel demodulates the data or completes the channel measurement.

The determining the value of the pilot parameter corresponding to the pilot signal may be determined according to the received high-layer signaling of the base station, or the terminal may be agreed by the base station.

The pilots include but are not limited to DMRS, SRS, CSI-RS.

Since the pilot parameters are in different ports, the values of at least two parameters are orthogonal. For example, when the two ports are used, the signal corresponding to the pilot port 0 is sent in the Comb 0, and the signal corresponding to the pilot port 1 is Comb 1 transmits, they are orthogonal in the frequency domain, and can adapt to channels that change rapidly in time domain or frequency domain, and REs corresponding to different Combs can be interpolated. The signal OCC corresponding to the pilot port 0 is [1 1], and the signal OCC corresponding to the pilot port 1 is [1 -1], which are orthogonal in the time domain corresponding to the two symbols, and can be adapted to the frequency domain selection. Sexual channel. The index of the signal cyclic shift sequence corresponding to the pilot port 0 is 0, the sequence corresponding to the sequence index 0 is [1 1 1 1], and the index of the signal cyclic shift sequence corresponding to the pilot port 1 is 1, and the sequence index is The sequence corresponding to 0 is [1 j -1 -j], which are orthogonal on multiple carriers, which is more suitable for channels with faster time domain variation, and because the sequence is longer, the neighbor cells or Mu can be eliminated less. Interference. This provides a greater degree of freedom for the terminal to estimate the channel for different channel scenarios, so that channel estimation can be performed well and the performance of the system is improved.

The parameter configuration using the method of the present invention allows the user to have greater degrees of freedom to select the time domain, or the frequency domain, or the orthogonality of one dimension on the code domain to reduce channel interference interference between pilot ports. Thus, the performance of the estimated channel of the pilot can be improved.

Example 3

In this embodiment, the data transmission is performed, and in order to improve the channel estimation performance, the sequence of the pilot signal port is randomized, so that the port sequence of the pilot signal has more sequence selection possibilities.

In this embodiment, the base station and the terminal implement the configuration of the pilot parameters by the following steps. In order to improve the interference of different pilot ports in different symbols and/or Comb, the interference is more randomized, similar to white noise, so that the interference cancellation can be facilitated to improve the performance of channel estimation. The pilots include but are not limited to DMRS, SRS, CSI-RS.

Here, the parameters of the pilot include a cyclic shift sequence, Comb, OCC, and the like. The value of the cyclic shift sequence is related to the symbol index and all of Comb, in addition to the cell-specific parameters. That is, the value of the cyclic shift sequence is determined by at least one of cell-specific information, Symbol, Comb.

For example, the sequence index of the cyclic shift sequence is mod (X+Nsy, N cyclic shift sequence) or mod (X+Ncb, N cyclic shift sequence) or mod (X+Ncb+Nsy, N cyclic shift sequence) Where X is the value of the sum of at least one parameter in the cell-specific information, which may be 0, indicating that no cell-specific information is used, ie, the sequence index of the cyclically shifted sequence is mod (Nsy, N cyclic shift sequence) ) either mod (Ncb, N cyclic shift sequence) or mod (Ncb + Nsy, N cyclic shift sequence). Nsy denotes the symbol index of the transmitted pilot, Ncb denotes the value of Comb used by the transmitted pilot, and N cyclic shift sequence denotes the length or number of cyclic shift sequences.

Here, the value of the OCC is also determined by Comb, such as the value of OCC is mod (X+Ncb, Nocc), or mod (Ncb, Nocc), where Ncb represents the value of Comb used by the transmitted pilot, N loop The shift sequence represents the length or number of cyclic shift sequences, and X is a value of a sum of at least one parameter in the cell-specific information, which may be 0, indicating that cell-specific information is not used.

Cell-specific information, also known as cell-specific parameters, includes but is not limited to one of the following:

Cell ID, beam ID, physical downlink control channel PDCCH location, SS block index, CSI-RS index, X-RNTI.

Step 2: The terminal receives the pilot and the transmitted data sent by the base station. Determining the value of the pilot parameter of the received pilot, and performing channel estimation according to the value of the pilot parameter and the received pilot, and demodulating the data by using the estimated channel.

The method for determining the pilot parameters of the pilot is the same as the method of step 1.

Example 4

This embodiment mainly describes the minimum unit for performing joint estimation of a channel in order to improve channel estimation performance during data transmission.

Here, the parameters of the pilot include a cyclic shift sequence, Comb, OCC, etc., and their values can be implemented by any one of Embodiments 1 to 3, and are not described here. The pilots include but are not limited to DMRS, SRS, CSI-RS.

The terminal performs at least two physical resource block (PRB) resources when performing channel estimation. These two PRBs include 3 complete cyclic shift sequences.

When the cyclic shift sequence length is 4, since the RE used by the pilot of each PRB, that is, Comb has only 6 REs, the sequence of the two pilot ports on the same Comb is not orthogonal. Will affect the elimination of interference, and 2 PRBs, there are 2 Comb, their length is 12, just can have the length of 3 cyclic shift sequences, so that the cyclic shift sequence is orthogonal, as shown in Table 3. Show. In this way, the interference between the pilot ports due to the non-orthogonal sequence can be reduced, and the performance of the channel estimation can be improved.

table 3

In Table 1, the first column indicates the PRB index and the carrier index occupied by the Comb of the transmission pilot, such as the pilot on the i-th and i+1 PRB, comb0. The second column represents the cyclic shift sequence corresponding to port 1, and the third column represents the cyclic shift sequence corresponding to port 2. It can be seen that if a single PRB performs channel estimation,

carriers

0, 2, 4, 6, 8, 10 of the i-th PRB or the i+1th PRB, the cyclic shift sequence on port 0 and the port 1 Cyclic shift sequences, which are non-orthogonal, so that interference is not well eliminated, but if the i-th PRB and the i+1th PRB are combined, the cyclic shift sequence on port 0 and the cyclic shift of port 2 The bit sequence is orthogonal.

Example 5

This embodiment mainly describes different DMRS groups having different binding granularities in order to improve demodulation performance during data transmission.

Here, the parameters of the pilot include a cyclic shift sequence, Comb, OCC, etc., and their values can be implemented by any one of Embodiment 1 to Embodiment 3, and are not described here. The pilots include but are not limited to DMRS, SRS, CSI-RS.

Here, different pilot port groups have different frequency domain binding granularity, and the so-called frequency domain binding granularity refers to the number of PRBs that precoding plays in the frequency domain. For example, the frequency domain binding granularity of the pilot port group 0 is N PRBs, and the frequency domain binding granularity of the pilot port group 1 is M, where N is not equal to M, or N is K>1 times of M, or M is K times N, and the binding granularity can also be called a bundling size, or a precoding action area.

The pilot port group 0 is mainly used for channel measurement, and the pilot port group 1 is used for interference measurement, where the interference may include interference between multiple users in the cell, and may also include neighbor cell interference between cells, and may also include Interference between different layers of a single user, or interference between codewords transmitted by different base stations in a joint transmission of multiple transmission nodes. Or the QCL corresponding to the two pilot port groups is different.

It should be noted that it can also be divided into multiple pilot port groups, and their binding granularity is at least two different.

A pilot port group is a collection that includes at least one pilot port. For example, if there are 4 DMRS ports in an example, the pilot port group includes a pilot port of {pilot port 0, pilot port 2}, and the pilot port group 1 includes a pilot port of {pilot port 1 , the pilot port 3}, or the port included in the pilot port group 0 is {pilot port 0}, and the pilot port included in the pilot port group 1 is {pilot port 1, pilot port 2, pilot port 3 }, of course, there are other grouping situations as needed, which are not listed here.

The binding granularity information of the different pilot port groups may be configured by the base station to the terminal through high-level signaling, or may be agreed by the base station and the terminal.

Step 2: The terminal receives the pilot and the transmitted data sent by the base station. Determining the value of the pilot parameter of the received pilot, and performing channel estimation according to the value of the pilot parameter and the received pilot, and demodulating the data by using the estimated channel. The pilot corresponding to the port included in the pilot port group 0 is used for channel estimation, and the pilot corresponding to the port included in the pilot port group 1 is used for interference estimation.

The value of the pilot parameter for determining the pilot is mainly the binding granularity of the pilot signal, and its value is the same as that of step 1.

Different port groups have different binding granularities, which enables more flexible precoding granularity processing. For example, the interference binding granularity is larger, and statistics of interference in a larger frequency domain range can be obtained, so that statistics can be more accurately counted. Interference, and if the data is more granularly bound, it can be interpolated over a larger range for better channel estimation performance.

Show 6

This embodiment mainly describes that different pilot patterns are transmitted at different times in order to improve channel estimation performance.

Step 1: The base station configures the pilot pattern parameters at different times. At different times, the base station transmits pilot signals corresponding to different pilot pattern parameters.

Here, the pilot pattern includes, but is not limited to, IFDM-based pilot pattern 1 and FD-OCC-based pilot pattern 2, or TD-OCC-based pilot pattern 3, such as LTE DMRS or CSI-RS pilot pattern .

Here, how many time slots are transmitted by different pilot patterns, and the proportion of the transmission time slots is notified to the terminal by the MIB.

Here, the time slot includes symbols, subframes, frames, slot slots, and the like.

Here, the base station can transmit corresponding data carrying RA, paging, SIB, or data that needs to be transmitted to the user.

Step 2: The terminal receives the pilot transmitted by the base station. Determining the value of the pilot parameter of the received pilot, performing channel estimation according to the value of the pilot parameter and the received pilot, and demodulating or channel measuring the data by using the estimated channel.

Here, the proportion of the pilot pattern transmitted in different time slots or which pilot pattern is transmitted is obtained by the user through the received MIB information.

Different pilot patterns can be sent at different times, so that the terminal can receive different pilot patterns without knowing the channel condition, and the channel estimation performance of different pilot patterns is different, and a good performance pattern can be selected. Estimation of the channel to improve the performance of the channel estimate.

The binding granularity information of the different port groups may be configured by the base station to the terminal through high-level signaling, or may be agreed by the base station and the terminal.

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, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

Example 3

In the embodiment, a pilot signal transmitting apparatus is further provided, and the apparatus is configured to implement the foregoing embodiments and implementation manners, and details have been omitted for description. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated. FIG. 5 is a block diagram of a pilot signal transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 5, the method includes:

The first determining module 52 is configured to determine a parameter of the pilot signal according to the proprietary information;

The transmitting module 54 is configured to transmit, on the pilot port, a pilot signal configured according to a parameter of the pilot signal.

In other embodiments, the proprietary information further includes carrier frequency information, a terminal capability, and a working state of the terminal, and the first determining module 52 is further configured to: according to the carrier frequency information, the terminal capability, At least one of the working states of the terminal determines a parameter of the pilot signal, and the parameter of the pilot signal includes at least one of a pilot signal pattern, an orthogonal cover code, a comb, and a cyclic shift sequence.

In other embodiments, the first determining module 52 is further configured to determine, according to the indication information of the primary information block, a parameter value of at least one of the following pilot signals: a pilot signal pattern, a cyclic shift sequence, a comb, Orthogonal cover code.

In other embodiments, the first determining module 52 is further configured to perform at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, and channel state information reference signal resource configuration information, and a loop. The number of shift sequences Ncs determines the value of the cyclic shift sequence, wherein the Ncs is one of 2, 4, 6, 8, 12 values.

In other embodiments, the first determining module 52 is further configured to: according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a comb The number Ncb determines the value of the comb, wherein the Ncb is one of 2, 3, 4, 6, 8, 12.

In other embodiments, the first determining module 52 is further configured to: according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, and channel state information reference signal resource configuration information, and The number of the coverage code sequences Nocc determines the value of the orthogonal cover code, wherein the Nocc is one of 2, 4, and 8.

In other embodiments, at least one set of pilot ports in the set of pilot ports is used for channel measurement, and at least one set of pilot ports in the set of pilot ports is used for interference measurement.

Example 4

The embodiment of the present invention further provides a data demodulating apparatus. FIG. 6 is a block diagram of a data demodulating apparatus according to an embodiment of the present invention. As shown in FIG. 6, the method includes:

The receiving module 62 is configured to receive a pilot signal transmitted by the base station on the pilot port;

The second determining module 64 is configured to determine a parameter of the pilot signal corresponding to the pilot signal.

In other embodiments, the specific information includes at least one of the following: a cell identifier, a beam identifier, a location of a physical downlink control channel, a quasi-co-location relationship, an indication information of a main information block, a scrambling sequence, and a format of a downlink control information format. , carrier spacing, cyclic prefix length.

In other embodiments, the second determining module 64 is further configured to perform at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, and channel state information reference signal resource configuration information, and a loop. The number of shift sequences Ncs determines the value of the parameter cyclic shift sequence of the pilot signal, wherein the Ncs is one of 2, 4, 6, 8, 12.

In other embodiments, the second determining module 64 is further configured to: according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a comb The number Ncb determines the value of the parameter comb of the pilot signal, wherein the Ncb is one of 2, 3, 4, 6, 8, 12.

In other embodiments, the second determining module 64 is further configured to: according to the cell identifier, the beam identifier, the location of the physical downlink control channel, the SS block resource configuration information, the channel state information reference signal index, and the orthogonal The cover code number Nocc determines the value of the parameter orthogonal cover code of the pilot signal, wherein the Nocc is one of 2, 4, and 8.

In other embodiments, the second determining module 64 is further configured to receive a pilot signal pattern sent by the base station by using primary information block information, determine an orthogonal cover code according to the pilot signal pattern, comb, and cyclically shift The value of at least one of the bit sequences.

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 5

Embodiments of the present invention also provide a storage medium including a stored program, wherein the program described above executes the method of any of the above.

In one embodiment, the storage medium described above may be arranged to store program code for performing the following steps:

S11. Determine a parameter of the pilot signal according to the proprietary information.

S12. Send a pilot signal configured according to a parameter of the pilot signal on a pilot port.

In another embodiment, the storage medium is also arranged to store program code that is also used to perform the following steps:

S21. Receive a pilot signal transmitted by a base station on a pilot port.

S22. Determine a parameter of a pilot signal corresponding to the pilot signal.

In this embodiment, the foregoing storage medium may include, but is not limited to, a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk. A variety of media that can store program code.

Embodiments of the present invention also provide a processor for running a program, wherein the program is executed to perform the steps of any of the above methods.

In one embodiment, the above program is used to perform the following steps:

S31. Determine a parameter of the pilot signal according to the proprietary information.

S32. Send a pilot signal configured according to a parameter of the pilot signal on a pilot port.

In another embodiment, the above program is further configured to perform the following steps:

S41. Receive a pilot signal transmitted by a base station on a pilot port.

S42. Determine a parameter of a pilot signal corresponding to the pilot signal.

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

It should be noted that, in the embodiment of the present invention, if the above-mentioned pilot signal transmitting method or pilot signal receiving method is implemented in the form of a software function module, and is sold or used as an independent product, it may also be stored in a computer. Read in the storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. One device (which may be a terminal or base station, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer program executable on a processor, and the method for receiving the pilot signal is implemented when the processor executes the program. The steps in .

An embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores a computer program executable on a processor, and the processor implements the steps in the method for transmitting a pilot signal when executing the program. .

The above description of the storage medium and device embodiments is similar to the description of the above method embodiments, and has similar advantageous effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of the present invention, please refer to the description of the method embodiments of the present invention.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation. The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element defined by the phrase "comprising a ..." does not exclude the presence of additional elements in the process, method, article, or device that comprises the element.

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

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

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; The unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing method embodiments may be performed by hardware related to program instructions. The foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a removable storage device, a read only memory (ROM), a magnetic disk, or an optical disk, and the like, which can store program codes.

Alternatively, the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. One device (which may be a terminal or base station, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a mobile storage device, a ROM, a magnetic disk, or an optical disk.

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

Industrial applicability

Claims

A method for transmitting a pilot signal, comprising:

Determining parameters of the pilot signal based on the proprietary information;

A pilot signal configured according to a parameter of the pilot signal is transmitted on a pilot port.
The method of claim 1, the pilot signal comprising at least one of: a demodulation reference signal, a channel state information reference signal, and a sounding reference signal.
The method according to claim 1, wherein the parameters of the pilot signal comprise at least one of: a cyclic shift sequence, an orthogonal cover code, a comb, a binding granularity of a pilot signal, and a pilot signal pattern.
The method according to claim 1, wherein the proprietary information comprises at least one of: a cell identifier, a beam identifier, a location of a physical downlink control channel, a quasi-co-location relationship, an indication information of a main information block, a scrambling sequence, and a downlink Control information format size, carrier spacing, cyclic prefix length.
The method according to claim 1, wherein transmitting a pilot signal configured according to a parameter of the pilot signal comprises:

A pilot signal corresponding to a different pilot signal pattern is transmitted at different times, wherein the pilot signal pattern is a subset of a predefined pilot signal pattern.
The method according to claim 5, wherein the transmission time ratio or transmission time of said different pilot signal patterns is notified by a master information block.
The method according to claim 4, wherein the different scrambling sequences or different downlink control information format sizes correspond to different pilot signal parameters, wherein the pilot signal parameters include a pilot signal pattern and an orthogonal cover code. , comb, at least one of the cyclic shift sequences.
The method according to claim 7, wherein the different scrambling sequences mean that the scrambling sequences have different radio network temporary identification numbers, or the different scrambling sequences have the same radio network temporary identification number but loop The redundancy check mask is different.
The method according to claim 3, wherein different subcarrier spacings or different cyclic prefixes correspond to parameters of different pilot signals, and parameters of the pilot signals include pilot signal patterns, orthogonal cover codes, combs, and cyclic shifts. At least one of the bit sequences.
The method according to claim 1, wherein determining parameters of the pilot signal according to the proprietary information comprises:

The proprietary information further includes carrier frequency information, a terminal capability, and a working state of the terminal, and determining parameters of the pilot signal according to at least one of the carrier frequency information, the terminal capability, and the working state of the terminal. The parameter of the pilot signal includes at least one of a pilot signal pattern, an orthogonal cover code, a comb, and a cyclic shift sequence.
The method according to claim 4, wherein the location of the physical downlink control channel comprises at least one of: transmitting a start symbol index of the physical downlink control channel, transmitting an end symbol index of the physical downlink control channel, and transmitting the physical downlink control channel The starting carrier index transmits the end carrier index of the physical downlink control channel.
The method according to claim 4, wherein the quasi-common position relationship comprises: a synchronization signal block index, and resource configuration information of the channel state information reference signal.
The method according to claim 4, wherein the parameter values of at least one of the following pilot signals are determined according to the indication information of the main information block: a pilot signal pattern, a cyclic shift sequence, a comb, and an orthogonal cover code.
The method according to claim 4, wherein at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a number of cyclic shift sequences Ncs are determined. The value of the cyclic shift sequence, wherein the Ncs is one of 2, 4, 6, 8, 12.
The method according to claim 4, wherein the comb is determined according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a comb number Ncb. The value is, wherein the Ncb is one of 2, 3, 4, 6, 8, and 12.
The method according to claim 4, which is determined according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and an orthogonal cover code sequence number Nocc. The value of the orthogonal cover code, wherein the Nocc is one of 2, 4, and 8.
The method of claim 3, wherein the value of the parameter cyclic shift sequence of the pilot signal is determined by at least one of a symbol index used to transmit the pilot signal and a comb used to transmit the pilot signal.
The method according to claim 3, wherein the value of the parameter cyclic shift sequence of the pilot signal is indexed by a user-specific cyclic shift sequence, a semi-static cyclic shift sequence index, and the number of cyclic shift sequences Ncs are determined together. The user-specific cyclic shift sequence index is signaled by a physical layer or higher layer, and the semi-static cyclic shift sequence index is notified by higher layer signaling.
The method of claim 3, wherein the value of the parameter orthogonal cover code of the pilot signal is determined by an index of a comb used to transmit the pilot signal.
The method according to claim 1, wherein the port for transmitting the pilot signal is divided into at least two pilot port groups, and at least two pilot port groups of the pilot port group have different binding granularities.
The method according to claim 20, wherein the binding granularity of the pilot port group corresponding to the at least two different quasi-common position values is different;

The binding port groups of the at least two different transport blocks have different binding granularities;

The binding port groups of at least two different codewords have different binding granularities.
The method of claim 21, wherein at least one set of pilot ports in the set of pilot ports is used for channel measurement, and at least one set of pilot ports in the set of pilot ports is used for interference measurement.
The method according to claim 1, wherein the value of the cyclic shift sequence of the pilot port 1 is different from the value of the cyclic shift sequence of the pilot port 2, the comb value of the pilot port 1 and the pilot The value of the comb of the port 2 is different, and the value of the orthogonal cover code of the pilot port 1 is different from the value of the orthogonal cover code of the pilot port 2.
A pilot signal receiving method includes:

Receiving a pilot signal transmitted by the base station on the pilot port;

Determining a parameter of a pilot signal corresponding to the pilot signal.
The method of claim 24, the pilot signal comprising at least one of: a demodulation reference signal, a channel state information reference signal, and a sounding reference signal.
The method according to claim 24, wherein the parameters of the pilot signal comprise at least one of: a cyclic shift sequence, an orthogonal cover code, a comb, a bound granularity of a pilot, and a pilot signal pattern.
The method according to claim 24, wherein the proprietary information comprises at least one of: a cell identifier, a beam identifier, a location of a physical downlink control channel, a quasi-co-location relationship, an indication information of a main information block, a scrambling sequence, and a downlink Control information format size, carrier spacing, cyclic prefix length.
The method according to claim 27, wherein different scrambling sequences or different downlink control information format sizes correspond to different pilot signal parameters, wherein the pilot signal parameters include a pilot signal pattern, an orthogonal cover code, and a comb At least one of the cyclic shift sequences.
The method according to claim 28, wherein said different scrambling sequence means that said scrambling sequence has different radio network temporary identification numbers, or said different scrambling sequences have the same radio network temporary identification number but are cyclic The redundancy check mask is different.
The method according to claim 27, wherein determining parameters of the pilot signal corresponding to the pilot signal comprises:

Determining a value of the cyclic shift sequence according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a number of cyclic shift sequences Ncs, where The Ncs is a value of one of 2, 4, 6, 8, and 12.
The method according to claim 27, wherein determining parameters of the pilot signal corresponding to the pilot signal comprises:

Determining a comb value according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, a channel state information reference signal resource configuration information, and a comb number Ncb, wherein the Ncb is 2. One of the values of 3, 4, 6, 8, and 12.
The method according to claim 27, wherein determining parameters of the pilot signal corresponding to the pilot signal comprises:

Determining an orthogonal cover code according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, an SS block resource configuration information, a channel state information reference signal index, and an orthogonal cover code number Nocc, where The Nocc is one of 2, 4, and 8 values.
The method according to claim 27, wherein determining parameters of the pilot signal corresponding to the pilot signal comprises:

Receiving a pilot signal pattern sent by the base station by using primary information block information;

Determining an orthogonal cover code, a comb, and a value of at least one of the cyclic shift sequences according to the pilot signal pattern.
The method of claim 26, wherein the value of the parameter cyclic shift sequence of the pilot signal is determined by at least one of a symbol index used to transmit the pilot signal and a comb used to transmit the pilot signal.
The method according to claim 26, wherein the value of the parameter cyclic shift sequence of the pilot signal is indexed by a user-specific cyclic shift sequence, a semi-static cyclic shift sequence index, and a number of cyclic shift sequences Ncs are jointly determined. The user-specific cyclic shift sequence index is signaled by a physical layer or higher layer, and the semi-static cyclic shift sequence index is notified by higher layer signaling.
The method of claim 26, wherein the value of the parameter orthogonal cover code of the pilot signal is determined by an index of a comb used to transmit the pilot signal.
The method according to claim 24, wherein the port for transmitting the pilot signal is divided into at least two pilot port groups, and at least two pilot port groups of the pilot port group have different binding granularities.
The method according to claim 37, wherein the binding granularity of the pilot port group corresponding to the at least two different quasi-common position values is different;

The binding port groups of the at least two different transport blocks have different binding granularities;

The binding port groups of at least two different codewords have different binding granularities.
The method according to claim 24, wherein the value of the cyclic shift sequence of the pilot port 1 is different from the value of the cyclic shift sequence of the pilot port 2, the comb value of the pilot port 1 and the pilot The value of the comb of the port 2 is different, and the value of the orthogonal cover code of the pilot port 1 is different from the value of the orthogonal cover code of the pilot port 2.
A pilot signal transmitting device includes:

a first determining module, configured to determine a parameter of the pilot signal according to the proprietary information;

And a sending module, configured to send, on the pilot port, a pilot signal configured according to a parameter of the pilot signal.
The apparatus according to claim 40, the proprietary information further includes carrier frequency information, a terminal capability, and an operating state of the terminal, and the first determining module is further configured to: according to the carrier frequency information, the terminal capability At least one of the working states of the terminal determines a parameter of the pilot signal, and the parameter of the pilot signal includes at least one of a pilot signal pattern, an orthogonal cover code, a comb, and a cyclic shift sequence.
The apparatus according to claim 40, wherein the first determining module is further configured to determine, according to the indication information of the main information block, a parameter value of at least one of the following pilot signals: a pilot signal pattern, a cyclic shift sequence, Comb, orthogonal cover code.
A pilot signal receiving apparatus includes:

a receiving module, configured to receive a pilot signal transmitted by the base station on the pilot port;

The second determining module is configured to determine a parameter of the pilot signal corresponding to the pilot signal.
The apparatus according to claim 43, wherein the proprietary information comprises at least one of: a cell identifier, a beam identifier, a location of a physical downlink control channel, a quasi-co-location relationship, an indication information of a main information block, a scrambling sequence, and a downlink Control information format size, carrier spacing, cyclic prefix length.
The apparatus according to claim 44, wherein the second determining module is further configured to: according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, and channel state information reference signal resource configuration information. And the number of cyclic shift sequences Ncs determines the value of the parameter cyclic shift sequence of the pilot signal, wherein the Ncs is one of 2, 4, 6, 8, 12.
The apparatus according to claim 44, wherein the second determining module is further configured to: according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, a synchronization signal block index, and channel state information reference signal resource configuration information. And combing the number Ncb to determine the value of the parameter comb of the pilot signal, wherein the Ncb is one of 2, 3, 4, 6, 8, 12.
The apparatus according to claim 44, the second determining module is further configured to: according to at least one of a cell identifier, a beam identifier, a location of a physical downlink control channel, an SS block resource configuration information, a channel state information reference signal index, and The orthogonal cover code number Nocc determines the value of the parameter orthogonal cover code of the pilot signal, wherein the Nocc is one of 2, 4, and 8.
The apparatus according to claim 44, the second determining module is further configured to receive a pilot signal pattern sent by the base station by using primary information block information; determine an orthogonal cover code according to the pilot signal pattern, comb, The value of at least one of the cyclic shift sequences.
A pilot signal transmission system including a base station and a terminal,

The base station is configured to determine a parameter of the pilot signal according to the proprietary information, and send, on the pilot port, a pilot signal configured according to a parameter of the pilot signal to the terminal;

The terminal is configured to receive the pilot signal transmitted by the base station on a pilot port, and determine a parameter of a pilot signal corresponding to the pilot signal.
A storage medium, the storage medium comprising a stored program, wherein the program is executed to perform the method of any one of claims 1 to 23, or the program is executed during execution of claims 24 to 39 The method of any of the preceding claims.
A processor for executing a program, wherein the program is executed to perform the method of any one of claims 1 to 23, or the program is executed to perform any of claims 24 to 39 One of the methods described.