CN117014254A

CN117014254A - Communication method, device, equipment and storage medium

Info

Publication number: CN117014254A
Application number: CN202210467581.4A
Authority: CN
Inventors: 马大为
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-11-07

Abstract

The application provides a communication method, a communication device and a storage medium. The method comprises the following steps: the terminal equipment receives indication information sent by the network equipment, the indication information is at least used for determining sequence initialization parameters corresponding to at least one CDM group where at least one reference signal port is located, the at least one CDM group is contained in M CDM groups, M is an integer greater than 3, the sequence initialization parameters are related to parity of indexes lambda of the corresponding CDM groups, a reference signal initial sequence is generated according to the sequence initialization parameters, and then a reference signal sent by the network equipment is received, wherein the reference signal is used for carrying out channel estimation by combining the reference signal initial sequence. When the CDM group supported by the transmission of the reference signal exceeds 3 groups, the sequence initialization parameter corresponding to each CDM group is determined based on the parity of the index of the CDM group, thereby generating the reference signal and reducing the PAPR of the reference signal.

Description

Communication method, device, equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, device, and storage medium.

Background

In some communication systems, such as the fifth generation mobile communication system (5th generation wireless system,5G), the network device needs to send reference signals, such as demodulation reference signals (Demodulation Reference Signal, DMRS), to the terminal device in order for the terminal device to perform channel estimation based on the reference signals.

Currently, transmission of DMRS supports up to 3 code division multiplexing (Code Division Multiplexing, CDM) groups (groups), each CDM group contains up to 4 DMRS ports, and the DMRS ports are distinguished by means of code division multiplexing. Then, code division multiplexing is implemented through the maximum of 12 DMRS ports when the DMRS initial sequence is generated. However, with the continuous development of communication technology, in order to further increase the throughput rate of the communication system, it is expected that the transmission of DMRS can support space division multiplexing of more users. Therefore, how to generate the DMRS initial sequence so that the DMRS can be transmitted based on the DMRS initial sequence and further perform channel estimation when the DMRS transmission supports more than 3 CDM groups is a problem to be solved currently.

Disclosure of Invention

The embodiment of the application provides a communication method, a device, equipment and a storage medium, which are used for generating an initial sequence of a reference signal when more than 3 CDM groups supported by the transmission of the reference signal are needed.

In a first aspect, an embodiment of the present application provides a communication method, including: the terminal equipment receives indication information sent by the network equipment, wherein the indication information is at least used for determining a sequence initialization parameter corresponding to at least one CDM group where at least one reference signal port is located, the at least one CDM group is contained in M CDM groups, M is an integer greater than 3, and the sequence initialization parameter is related to the parity of an index lambda of the corresponding CDM group; the terminal equipment generates a reference signal initial sequence according to the sequence initialization parameter; the terminal equipment receives a reference signal sent by the network equipment, wherein the reference signal is used for carrying out channel estimation by combining the initial sequence of the reference signal.

In a second aspect, an embodiment of the present application provides a communication method, including: the network device determines a sequence initialization parameter corresponding to each of M code division multiplexing CDM groups, M being an integer greater than 3, the sequence initialization parameter being related to parity of an index lambda of the corresponding CDM group; the network equipment generates M reference signal initial sequences according to the sequence initialization parameters corresponding to the M CDM groups respectively; the network equipment generates a reference signal comprising a plurality of reference signal ports according to the M reference signal initial sequences, wherein the plurality of reference signal ports are contained in the M CDM groups, and the reference signal initial sequence of the reference signal port is a reference signal initial sequence corresponding to the CDM group in which the reference signal port is located; the network device transmits the reference signal to the terminal device.

In a third aspect, an embodiment of the present application provides a communication apparatus, including: a transceiver unit, configured to receive indication information sent by a network device, where the indication information is at least used to determine a sequence initialization parameter corresponding to at least one CDM group where at least one reference signal port is located, where the at least one CDM group is included in M CDM groups, M is an integer greater than 3, and the sequence initialization parameter is related to parity of an index λ of the corresponding CDM group; the processing unit is used for generating a reference signal initial sequence according to the sequence initialization parameter; the transceiver unit is further configured to receive a reference signal sent by the network device, where the reference signal is used to perform channel estimation in combination with the reference signal initial sequence.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including: a processing unit, configured to determine a sequence initialization parameter corresponding to each of M code division multiplexing CDM groups, where M is an integer greater than 3, and the sequence initialization parameter is related to parity of an index λ of the corresponding CDM group; the processing unit is further used for generating M reference signal initial sequences according to the sequence initialization parameters corresponding to the M CDM groups respectively; the processing unit is further configured to generate a reference signal including a plurality of reference signal ports according to the M reference signal initial sequences, where the plurality of reference signal ports are included in the M CDM groups, and the reference signal initial sequence of the reference signal port is a reference signal initial sequence corresponding to the CDM group where the reference signal port is located; and the receiving and transmitting unit is used for transmitting the reference signal to the terminal equipment.

In a fifth aspect, embodiments of the present application provide an apparatus comprising logic circuitry and an input-output interface, wherein the input-output interface is to receive signals from or transmit signals to or from other communication devices than the apparatus, the logic circuitry to execute code instructions to implement a method as in the first aspect, the second aspect or in each of the possible implementations.

In a sixth aspect, an embodiment of the present application provides a communication apparatus, including: a processor and a memory for storing a computer program for invoking and running the computer program stored in the memory for performing the method as in the first aspect, the second aspect or in each of the possible implementations.

In a seventh aspect, an embodiment of the present application provides a chip, including: a processor for invoking and executing computer instructions from memory to cause a device on which the chip is mounted to perform a method as in the first aspect, the second aspect or in each of the possible implementations.

In an eighth aspect, embodiments of the present application provide a computer readable storage medium storing computer program instructions that cause a computer to perform a method as in the first aspect, the second aspect or in each of the possible implementations.

In a ninth aspect, embodiments of the application provide a computer program product comprising computer program instructions for causing a computer to perform the method as in the first aspect, the second aspect or in each of the possible implementations.

The embodiment of the application provides a generation scheme of a reference signal (such as DMRS) initial sequence, so that when more than 3 CDM groups supported by reference signal transmission are used, the generation of the reference signal initial sequence can be realized.

Further, in the generation of the reference signal initial sequence, the difference of the reference signal initial sequence between different CDM groups is adjusted in consideration of the parity of the index λ according to the CDM groups to reduce the average peak power ratio (Peak to Average Power Ratio, PAPR) of the DMRS initial sequence.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system to which an embodiment of the present application is applied.

Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 4 is another schematic block diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

The communication method provided by the application can be applied to various communication systems, such as: long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, future fifth generation (5th Generation,5G) mobile telecommunications system or new radio access technology (new radio access technology, NR) and three-way application scenario enhanced mobile bandwidth (enhanced mobile broadband, eMBB) of a 5G mobile telecommunications system, ultra-reliable, low latency communication (ultra reliable low latency communications, ul lc), and mass machine-like communication (massive machine type communications, mctc), device-to-device (D2D) communication system, satellite communication system, internet of things (internet of things, ioT), narrowband internet of things (narrow band internet of things, NB-IoT) system, global mobile communication system (global system for mobile communications, GSM), enhanced data rate GSM evolution system (enhanced data rate for GSM evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access system (code division multiple access, CDMA 2000), time division synchronous code division multiple access system (time division multiple access-synchronization code division multiple access, TD-SCDMA-2000). The 5G mobile communication system may include a non-independent Networking (NSA) and/or an independent networking (SA), among others.

The communication method provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system and the like. The application is not limited in this regard.

Fig. 1 is a schematic architecture diagram of a communication system to which an embodiment of the present application is applied. As shown in fig. 1, the mobile communication system includes a core network device 110, a network device 120, and at least one terminal device (e.g., terminal device 130 and terminal device 140 in fig. 1). The terminal equipment is connected with the network equipment in a wireless mode, and the network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the network device may be separate physical devices, or may integrate the functions of the core network device and the logic functions of the network device on the same physical device, or may integrate the functions of a part of the core network device and the functions of a part of the network device on one physical device. The terminal device may be fixed in position or may be movable. Fig. 1 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 1. The embodiment of the application does not limit the number of the core network equipment, the network equipment and the terminal equipment included in the mobile communication system.

The network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved base station eNodeB, a base station in an NR mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc., and the embodiment of the present application does not limit the specific technology and the specific device configuration adopted by the network device.

The Terminal device may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc.

Network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scenes of the network equipment and the terminal equipment.

Communication between the network device and the terminal device and between the terminal device and the terminal device can be performed through a licensed spectrum (licensed spectrum), communication can be performed through an unlicensed spectrum (unlicensed spectrum), and communication can be performed through both the licensed spectrum and the unlicensed spectrum. Communication between the network device and the terminal device and between the terminal device and the terminal device may be performed through a frequency spectrum of 6G or less, communication may be performed through a frequency spectrum of 6G or more, and communication may be performed using a frequency spectrum of 6G or less and a frequency spectrum of 6G or more at the same time. The embodiment of the application does not limit the frequency spectrum resources used between the network equipment and the terminal equipment.

It should be understood that the present application is not limited to any particular form of network device or terminal device.

In the communication system shown in fig. 1, the network device may send a reference signal to the terminal device, and the terminal device performs channel estimation on the physical layer channel by analyzing the received reference signal, so as to obtain the characteristics of the physical channel. The reference signal is taken as a DMRS for illustration hereinafter, but should not be construed as limiting the present application in any way, for example, the reference signal may also be a channel sounding reference signal (Sounding Reference Signal, SRS), a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), etc.

Further, in the process of generating the reference signal initial sequence, the difference of the reference signal initial sequence between different CDM groups is adjusted in consideration of the parity of the index lambda according to the CDM groups, so as to reduce the PAPR of the DMRS initial sequence.

The communication method provided by the embodiment of the application will be described in detail below with reference to the accompanying drawings.

It should be understood that the following details of the method provided by the embodiment of the present application are given only for the convenience of understanding and description, taking the interaction between the terminal device and the network device as an example. The terminal device may be, for example, a terminal device in the communication system shown in fig. 1. For example, the terminal device may be the terminal device 130 or 140 in fig. 1. The network device may be, for example, network device 120 in the communication system shown in fig. 1.

It should be understood that this should not constitute any limitation as to the subject matter of the execution of the method provided by the present application. The method provided according to the embodiment of the present application can be used as an execution subject of the method provided according to the embodiment of the present application as long as the program recorded with the code of the method provided according to the embodiment of the present application can be executed. For example, the terminal device shown in the following embodiments may be replaced by a component in the terminal device, such as a chip, a system on a chip, or other functional modules capable of calling and executing a program. The network device may also be replaced by a component in the network device, such as a chip, a system on a chip, or other functional modules capable of calling and executing programs, etc.

Fig. 2 is a schematic flow chart of a communication method 200 provided by an embodiment of the present application. As shown in fig. 2, the method 200 may include some or all of the processes in S210 to S260. The various steps in method 200 are described below.

S210, the network device determines M CDM groups of corresponding sequence initialization parameters, M is an integer greater than 3, the sequence initialization parameters are related to parity of index lambda of the corresponding CDM groups;

s220, the network equipment generates M reference signal initial sequences according to the sequence initialization parameters corresponding to the M CDM groups respectively;

s230, the network equipment generates a reference signal comprising a plurality of reference signal ports according to M reference signal initial sequences, wherein the reference signal ports are contained in M CDM groups, and the reference signal initial sequences of the reference signal ports are reference signal initial sequences corresponding to the CDM groups where the reference signal ports are located;

s240, the network device sends indication information to the terminal device, wherein the indication information is at least used for determining a sequence initialization parameter corresponding to at least one CDM group where at least one reference signal port is located, and the at least one CDM group is contained in M CDM groups; correspondingly, the terminal equipment receives the indication information sent by the network equipment;

S250, the terminal equipment generates a reference signal initial sequence according to the sequence initialization parameter;

s260, the network equipment sends a reference signal to the terminal equipment; correspondingly, the terminal equipment receives a reference signal sent by the network equipment, and the reference signal is used for carrying out channel estimation by combining with the initial sequence of the reference signal.

The execution sequence of the partial steps is not limited in the embodiment of the application. For example, the execution order of S260 and S240/S250 is not limited, and S260 may be executed before S240 or S250; for another example, the execution order of S240 and S220/S230 is not limited, and S240 may be executed before S220 or S230.

In the embodiment of the present application, the transmission of the reference signal may support more than 3 CDM groups, for example, the transmission of the reference signal may support 4 CDM groups, 6 CDM groups, and so on. One CDM group includes a plurality of reference signal ports, for example, one CDM group may include 4 reference signal ports.

Wherein the sequence initialization parameters may be used to generate the reference signal. For example, the network device generates a reference signal initial sequence based on the sequence initialization parameter, superimposes orthogonal cover codes (Orthogonal Cover Code, OCC) on the reference signal initial sequence to form a reference signal sequence, and maps the reference signal sequence to time-frequency resources to obtain the reference signal.

In order to reduce the PAPR of the reference signal, the present application considers the index lambda of CDM groups with different parity, determines different sequence initialization parameters for each CDM group, and generates different reference signal initial sequences for each CDM group based on the different sequence initialization parameters. The value range of the index λ of the M CDM groups is {0,1, …, M-1}, however, the present application is not limited thereto, and the value range of the index λ of the M CDM groups may be {1,2, …, M }, or the like.

Exemplary, when index λ of CDM group is even, sequence initialization parameter is sequence initialization identification n _SCID The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, when index λ of CDM group is odd, sequence initialization parameter is 1-n _SCID . The sequence initialization identifier may be indicated by the network device through physical layer control information. Assuming that the reference signal is DMRS, when m=6 and the value range of the index λ of the M CDM groups is {0,1, …,5}, the sequence initialization parameter of the DMRSSequence initialization identity n with index λ and DMRS of CDM group _SCID The following formula (1) is satisfied:

for another example, when m=4 and the value range of the index λ of the M CDM groups is {0,1, …,3}, the sequence initialization parameter of the DMRSSequence initialization identity n with index λ and DMRS of CDM group _SCID The following formula (2) is satisfied:

of course, the value of the index λ of the CDM group may be set to a corresponding value in response to the value of M, for example, when m=5, the range of the value of the index λ of the CDM group is {0,1, …,4} which is not listed here.

In S220, the network device may generate the reference signal initial sequence corresponding to each of the M CDM groups according to the sequence initialization parameter corresponding to the CDM groups, so as to obtain M reference signal initial sequences corresponding to the M CDM groups respectively.

Exemplary, still taking reference signals as DMRS as an example, a networkThe network device may input the sequence initialization parameter of the DMRS corresponding to one CDM group into the following formula (3) to generate the DMRS initial sequence c corresponding to the CDM group _init 。

Wherein,for the number of symbols in a slot, +.>For the slot number in the radio frame, l is the index of the current OFDM symbol in the slot,/is>And->Scrambling code identification configured for the network device through higher layer signaling. In case the higher layer indicates to use low (low) PAPR DMRS, the +_in case of low PAPR DMRS>

It is to be appreciated that the DMRS can occupy one or more orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols, e.g., the DMRS can occupy 2 OFDM symbols. When the DMRS occupies a plurality of OFDM symbols, a DMRS initial sequence on each symbol is determined on each OFDM symbol based on the above formula (3).

In S230, the network device may generate a reference signal including a plurality of reference signal ports, which may respectively belong to each CDM group of the M CDM groups, according to some or all of the M reference signal initial sequences. For example, CDM group 0 includes DMRS port 0 to DMRS port 3, CDM group 1 includes DMRS port 4 to DMRS port 7, CDM group 2 includes DMRS port 8 to DMRS port 11, CDM group 3 includes DMRS port 12 to DMRS port 15, and assuming that DMRS port 0 to DMRS port 6 are DMRS ports corresponding to terminal device a, the network device may generate DMRS including DMRS port 0 to DMRS port 6 according to the DMRS initial sequence corresponding to CDM group 0 and the DMRS initial sequence corresponding to CDM group 1; alternatively, assuming that DMRS ports 0 to 15 are DMRS ports corresponding to terminal device B, the network device may generate DMRS including DMRS ports 0 to 15 according to the DMRS initial sequences corresponding to the 4 CDM groups respectively. Of course, this example should not be construed as limiting the application.

In S260, the network device may send the reference signal to one or more terminal devices, and when the network device sends the reference signal to the plurality of terminal devices, each terminal device may correspond to a different reference signal or may correspond to the same reference signal, which is not limited in the present application. Still taking DMRS as an example, each terminal device may correspond to a different DMRS port, and the network device may generate a DMRS corresponding to each terminal device based on the different DMRS ports.

It will be appreciated that, after the terminal device receives the reference signal sent by the network device, channel estimation may be performed based on the received reference signal. In order to realize channel estimation, the terminal device also needs to generate a reference signal initial sequence based on the sequence initialization parameter, and realize channel estimation according to the reference signal initial sequence and the reference signal.

Specifically, the process of generating the reference signal initialization sequence by the terminal device can be seen in S240 and S250 described above.

In the above S240, the at least one reference signal port may be a reference signal port corresponding to the terminal device among all reference signal ports included in the M CDM groups, and the at least one reference signal port may be in one or more CDM groups among the M CDM groups. The indication information may directly indicate a sequence initialization parameter corresponding to at least one CDM group where the at least one reference signal port is located, or the indication information may be used to determine a sequence initialization parameter corresponding to at least one CDM group where the at least one reference signal port is located, which is not limited in the present application.

In some implementations, the indication information may indicate the at least one reference signal port and/or the at least one CDM group, and the terminal device directly obtains the at least one CDM group from the indication information, or the terminal device may determine the CDM group in which the terminal device is located according to at least the at least one reference signal port indicated by the information. Further, the terminal device may determine the sequence initialization parameter according to the parity of the index λ of the CDM group, and the implementation manner is similar to S210 described above, and will not be repeated here.

In S250 described above, the terminal device may generate the reference signal initial sequence according to the sequence initialization parameter. When at least one reference signal port corresponds to a plurality of CDM groups, the terminal device may generate a reference signal initial sequence corresponding to each CDM group of the plurality of CDM groups according to a sequence initialization parameter corresponding to the CDM group. The process of generating the reference signal initial sequence by the terminal device according to the sequence initialization parameter is similar to S220 described above, and will not be repeated here.

In some embodiments, to be able to further reduce the PAPR of the reference signal, the network device may generate M CDM reference signal initial sequences respectively corresponding to the respective M CDM sequences based on the sequence initialization parameter and a first parameter X for adjusting values of one or more least significant bits (LeastSignificant Bit, LSB) of each of the M reference signal initial sequences.

Taking reference signals as DMRS, reference signal initial sequence c corresponding to each CDM group _init The following formula (4) may be satisfied:

the description of the parameters in the formula (4) except the first parameter X is similar to the description of the above formula (3), and will not be repeated here.

Illustratively, for each of the M CDM groups, the value of the first parameter X is related to an index λ of the CDM group.

For example, for each of the M CDM groups, the value X of the first parameter satisfies one of:

X＝λ；

X＝2 ^λ 。

wherein,represents λ divided by 2 and rounded down.

It should be noted that, in the process of generating the reference signal initial sequence by the terminal device, the generation of the reference signal initial sequence may also be performed based on the sequence initialization parameter and the first parameter X. In general, when the reference signal transmitted by the network device to the terminal device is generated by a reference signal sequence generated based on the first parameter X, the terminal device needs to generate the reference signal sequence based on the first parameter X when performing channel estimation based on the reference signal. It should be understood that the process of generating the reference signal initial sequence by the first terminal device based on the sequence initialization parameter and the first parameter X is similar to the process of generating the reference signal initial sequence by the network device, and will not be repeated herein.

Therefore, in the embodiment of the application, when the CDM groups supported by the transmission of the reference signal exceeds 3 groups, the sequence initialization parameters corresponding to the CDM groups are determined based on the parity of the index of the CDM groups, and then the reference signal is generated based on the sequence initialization parameters corresponding to the CDM groups, so that the PAPR of the reference signal is reduced.

The above examples illustrate in detail the methods provided by the embodiments of the present application. The following describes in detail the apparatus provided in the embodiment of the present application with reference to fig. 3 and 4.

Fig. 3 is a schematic structural diagram of a communication device 300 according to an embodiment of the present application. As shown in fig. 3, the communication device 300 may include a transceiving unit 310 and a processing unit 320.

Alternatively, the communication apparatus 300 may be applied to the terminal device in the above method embodiment, for example, may be the terminal device, or a component (such as a chip or a chip system) configured in the terminal device.

It should be appreciated that each of the units in the communication device 300 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method 200 in fig. 2.

When the communication apparatus 300 is applied to the method in any of the foregoing embodiments, the transceiver unit 310 may be configured to receive indication information sent by a network device, where the indication information is at least used to determine a sequence initialization parameter corresponding to at least one CDM group where at least one reference signal port is located, where the at least one CDM group is included in M CDM groups, M is an integer greater than 3, and the sequence initialization parameter is related to parity of an index λ of the corresponding CDM group; the processing unit 320 may be configured to generate a reference signal initial sequence according to the sequence initialization parameter; the transceiver unit 310 is further configured to receive a reference signal sent by the network device, where the reference signal is used to perform channel estimation in combination with the reference signal initial sequence.

In some embodiments, the processing unit 320 is specifically configured to: and generating a reference signal initial sequence corresponding to the CDM group based on the sequence initialization parameter and a first parameter X, wherein the first parameter X is used for adjusting the value of one or more least significant bits LSB of the reference signal initial sequence, and the value of the first parameter X is related to an index lambda of the CDM group.

It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

When the communication device 300 is a terminal device, the transceiver unit 310 in the communication device 300 may be implemented by a transceiver, for example, may correspond to the transceiver 420 in the communication device 400 shown in fig. 4, and the processing unit 320 in the communication device 300 may be implemented by a processor, for example, corresponds to the processor 410 in the communication device 400 shown in fig. 4.

When the communication device 300 is a chip or a chip system configured in a terminal apparatus, the transceiver unit 310 and the processing unit 320 in the communication device 300 may be implemented by an input/output interface, a circuit, or the like.

Alternatively, the communication apparatus 300 may correspond to the network device in the above method embodiment, for example, may be a network device, or may be a component (such as a chip or a chip system, etc.) configured in the network device.

Wherein, when the communication apparatus 300 is used for executing the method in any of the foregoing embodiments, the processing unit 320 is configured to determine the sequence initialization parameters corresponding to M code division multiplexing CDM groups respectively, where M is an integer greater than 3, and the sequence initialization parameters are related to the parity of the index λ of the corresponding CDM group; the processing unit 320 is further configured to generate M reference signal initial sequences according to the sequence initialization parameters corresponding to the M CDM groups respectively; the processing unit 320 is further configured to generate, according to the M reference signal initial sequences, a reference signal including a plurality of reference signal ports, where the plurality of reference signal ports are included in the M CDM groups, and the reference signal initial sequence of the reference signal port is a reference signal initial sequence corresponding to the CDM group where the reference signal port is located; and a transceiver 310, configured to send the reference signal to a terminal device.

In some embodiments, the processing unit 320 is specifically configured to: generating reference signal initial sequences corresponding to the M CDM groups respectively based on the sequence initialization parameters and a first parameter X for adjusting values of one or more least significant bits LSBs of each of the M reference signal initial sequences, and for each CDM group of the M CDM groups, the value of the first parameter X is related to an index λ of the CDM group.

It should also be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

When the communication apparatus 300 is a network device, the transceiver unit 310 in the communication apparatus 300 may be implemented by a transceiver, for example, may correspond to the transceiver 420 in the communication apparatus 400 shown in fig. 4.

When the communication apparatus 300 is a chip or a chip system configured in a network device, the transceiver unit 310 and the processing unit 320 in the communication apparatus 300 may be implemented by an input/output interface, a circuit, or the like.

Fig. 4 is another schematic block diagram of a communication device 400 according to an embodiment of the present application. As shown in fig. 4, the apparatus 400 may include: a processor 410, a transceiver 420, and a memory 430. Wherein the processor 410, the transceiver 420 and the memory 430 are in communication with each other through an internal connection path, the memory 430 is used for storing instructions, and the processor 410 is used for executing the instructions stored in the memory 430 to control the transceiver 420 to transmit signals and/or receive signals.

It should be understood that the communication apparatus 400 may correspond to a terminal device or a network device in the above-described method embodiment, and may be used to perform the respective steps and/or flows performed by the terminal device or the network device in the above-described method embodiment. Alternatively, the memory 430 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. The memory 430 may be a separate device or may be integrated into the processor 410. The processor 410 may be configured to execute instructions stored in the memory 430, and when the processor 410 executes the instructions stored in the memory, the processor 410 is configured to perform the steps and/or processes of the method embodiments described above corresponding to the terminal device or network device.

Optionally, the communication apparatus 400 is a terminal device in the previous embodiment.

Optionally, the communication apparatus 400 is a network device in the previous embodiment.

The transceiver 420 may include a transmitter and a receiver, among others. Transceiver 420 may further include antennas, the number of which may be one or more. The processor 410 and memory 430 and transceiver 420 may be devices integrated on different chips. For example, the processor 410 and the memory 430 may be integrated in a baseband chip, and the transceiver 420 may be integrated in a radio frequency chip. The processor 410 and memory 430 may also be devices integrated on the same chip as the transceiver 420. The application is not limited in this regard.

Alternatively, the communication apparatus 400 is a component configured in a terminal device, such as a chip, a chip system, or the like.

Alternatively, the communication apparatus 400 is a component configured in a network device, such as a chip, a chip system, or the like.

The transceiver 420 may also be a communication interface, such as an input/output interface, a circuit, etc. The transceiver 420 may be integrated in the same chip as the processor 410 and the memory 420, such as in a baseband chip.

The application also provides a processing device, which comprises at least one processor, wherein the at least one processor is used for executing the computer program stored in the memory, so that the processing device executes the method executed by the terminal device or the method executed by the network device in the embodiment of the method.

The embodiment of the application also provides a processing device which comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program from the memory, so that the processing device executes the method executed by the terminal device or the method executed by the network device in the method embodiment.

It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to a method provided by an embodiment of the present application, the present application also provides a computer program product, including: computer program code which, when run on a computer, causes the computer to perform the method performed by the terminal device or the network device in the method embodiments described above.

According to the method provided by the embodiment of the application, the application further provides a computer readable storage medium, and the computer readable storage medium stores program codes which, when run on a computer, cause the computer to execute the method executed by the terminal device or the network device in the embodiment of the method.

According to the method provided by the embodiment of the application, the application also provides a communication system which can comprise the terminal equipment and the network equipment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

the method comprises the steps that terminal equipment receives indication information sent by network equipment, wherein the indication information is at least used for determining sequence initialization parameters corresponding to at least one CDM group where at least one reference signal port is located, the at least one CDM group is contained in M CDM groups, M is an integer greater than 3, and the sequence initialization parameters are related to parity of an index lambda of the corresponding CDM group;

the terminal equipment generates a reference signal initial sequence according to the sequence initialization parameter;

the terminal equipment receives a reference signal sent by the network equipment, wherein the reference signal is used for carrying out channel estimation by combining the reference signal initial sequence.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

when the index lambda of the CDM group is an even number, the sequence initialization parameter is a sequence initialization mark n _SCID The method comprises the steps of carrying out a first treatment on the surface of the Or,

when the index lambda of the CDM group is odd, the sequence initialization parameter is 1-n _SCID 。

3. The method according to claim 1 or 2, characterized in that M is equal to 4 or 6; the range of values of the index λ of the M CDM groups is {0,1, …, M-1}.

4. A method according to any of claims 1 to 3, wherein the terminal device generates a reference signal initial sequence based on the sequence initialization parameter, comprising:

the terminal device generates a reference signal initial sequence corresponding to the CDM group based on the sequence initialization parameter and a first parameter X, wherein the first parameter X is used for adjusting values of one or more least significant bits LSB of the reference signal initial sequence, and the value of the first parameter X is related to an index λ of the CDM group.

5. The method of claim 4, wherein the value X of the first parameter satisfies one of:

X＝λ；

X＝2 ^λ 。

6. the method of any one of claims 1 to 5, wherein the CDM group includes at most 4 reference signal ports.

7. A method of communication, comprising:

the network equipment determines sequence initialization parameters corresponding to M code division multiplexing CDM groups respectively, wherein M is an integer greater than 3, and the sequence initialization parameters are related to the parity of an index lambda of the corresponding CDM group;

The network equipment generates M reference signal initial sequences according to the sequence initialization parameters respectively corresponding to the M CDM groups;

the network equipment generates a reference signal comprising a plurality of reference signal ports according to the M reference signal initial sequences, wherein the reference signal ports are contained in the M CDM groups, and the reference signal initial sequences of the reference signal ports are reference signal initial sequences corresponding to the CDM groups where the reference signal ports are located;

the network device sends the reference signal to a terminal device.

8. The method of claim 7, wherein the step of determining the position of the probe is performed,

9. The method according to claim 7 or 8, wherein M is equal to 4 or 6; the range of values of the index λ of the M CDM groups is {0,1, …, M-1}.

10. The method according to any one of claims 7 to 9, wherein the network device generates M reference signal initial sequences corresponding to M CDM groups, respectively, based on a sequence initialization parameter, including:

The network device generates reference signal initial sequences corresponding to the M CDM groups respectively based on the sequence initialization parameters and a first parameter X for adjusting values of one or more least significant bits LSBs of each of the M reference signal initial sequences, and for each CDM group of the M CDM groups, the value of the first parameter X is related to an index λ of the CDM group.

11. The method of claim 10, wherein, for each of the M CDM groups, a value X of the first parameter satisfies one of:

X＝λ；

X＝2 ^λ 。

12. the method of any one of claims 7 to 11, wherein the CDM group includes at most 4 reference signal ports.

13. A communication device, comprising:

a transceiver unit, configured to receive indication information sent by a network device, where the indication information is at least used to determine a sequence initialization parameter corresponding to at least one CDM group where at least one reference signal port is located, where the at least one CDM group is included in M CDM groups, M is an integer greater than 3, and the sequence initialization parameter is related to parity of an index λ of the corresponding CDM group;

The processing unit is used for generating a reference signal initial sequence according to the sequence initialization parameter;

the receiving and transmitting unit is further configured to receive a reference signal sent by the network device, where the reference signal is used to perform channel estimation in combination with the reference signal initial sequence.

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

15. The apparatus of claim 13 or 14, wherein M is equal to 4 or 6; the range of values of the index λ of the M CDM groups is {0,1, …, M-1}.

16. The device according to any one of claims 13 to 15, wherein the processing unit is specifically configured to:

and generating a reference signal initial sequence corresponding to the CDM group based on the sequence initialization parameter and a first parameter X, wherein the first parameter X is used for adjusting the value of one or more least significant bits LSB of the reference signal initial sequence, and the value of the first parameter X is related to an index lambda of the CDM group.

17. The apparatus of claim 16, wherein the value X of the first parameter satisfies one of:

X＝λ；

X＝2 ^λ 。

18. The apparatus of any one of claims 13 to 17, wherein the CDM group includes at most 4 reference signal ports.

19. A communication device, comprising:

a processing unit, configured to determine sequence initialization parameters corresponding to M code division multiplexing CDM groups, where M is an integer greater than 3, and the sequence initialization parameters are related to parity of an index λ of the corresponding CDM group;

the processing unit is further configured to generate M reference signal initial sequences according to the sequence initialization parameters corresponding to the M CDM groups respectively;

the processing unit is further configured to generate a reference signal including a plurality of reference signal ports according to the M reference signal initial sequences, where the plurality of reference signal ports are included in the M CDM groups, and the reference signal initial sequence of the reference signal port is a reference signal initial sequence corresponding to the CDM group where the reference signal port is located;

and the receiving and transmitting unit is used for transmitting the reference signal to the terminal equipment.

20. The apparatus of claim 19, wherein the device comprises a plurality of sensors,

21. The apparatus of claim 19 or 20, wherein M is equal to 4 or 6; the range of values of the index λ of the M CDM groups is {0,1, …, M-1}.

22. The device according to any one of claims 19 to 21, wherein the processing unit is specifically configured to:

generating reference signal initial sequences corresponding to the M CDM groups respectively based on the sequence initialization parameters and a first parameter X for adjusting values of one or more least significant bits LSBs of each of the M reference signal initial sequences, and for each CDM group of the M CDM groups, the value of the first parameter X is related to an index λ of the CDM group.

23. The apparatus of claim 22, wherein, for each of the M CDM groups, a value X of the first parameter satisfies one of:

X＝λ；

X＝2 ^λ 。

24. the apparatus of any one of claims 19 to 23, wherein the CDM group includes at most 4 reference signal ports.

25. A communication device, characterized by a processor and a memory for storing a computer program, said processor being adapted to invoke and run the computer program stored in said memory for performing the method according to any of claims 1 to 6.

26. A communication device, characterized by a processor and a memory for storing a computer program, said processor being adapted to invoke and run the computer program stored in said memory for performing the method according to any of claims 7 to 12.

27. A chip, comprising: a processor for invoking and executing computer instructions from memory to cause a device on which the chip is mounted to perform the method of any of claims 1-6.

28. A chip, comprising: a processor for invoking and executing computer instructions from memory to cause a device on which the chip is mounted to perform the method of any of claims 7-12.

29. A computer readable storage medium storing computer program instructions for causing a computer to perform the method of any one of claims 1 to 6.

30. A computer readable storage medium storing computer program instructions for causing a computer to perform the method of any one of claims 7 to 12.

31. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 6.

32. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 7 to 12.