WO2022082492A1

WO2022082492A1 - Signal sending method, signal receiving method, and communication apparatus

Info

Publication number: WO2022082492A1
Application number: PCT/CN2020/122434
Authority: WO
Inventors: 龚名新
Original assignee: 华为技术有限公司
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2022-04-28

Abstract

Provided are a signal sending method, a signal receiving method and a communication apparatus, which relate to the technical field of communications, and can improve the flexibility of resource scheduling. The method comprises: a terminal device determining a sounding reference signal (SRS) sequence, wherein the SRS sequence is obtained on the basis of a basic sequence, the basic sequence is determined on the basis of a frequency-hopping sub-band and a sending sub-band of an SRS, the bandwidth of the frequency-hopping sub-band is different from that of the sending sub-band, and the SRS sequence is used for generating the SRS; and the terminal device then sending the SRS to a network device.

Description

Signal transmission and reception method and communication device

technical field

The present application relates to the field of communication technologies, and in particular, to a method and a communication device for signal transmission and reception.

Background technique

The network device uses a sounding reference signal (SRS) to estimate the uplink channel quality, so as to allocate a resource block (RB) with better uplink channel quality to the terminal device to implement resource scheduling. In a time division duplexing (TDD) scenario, the uplink channel and the downlink channel are reciprocal. SRS can also be used to obtain downlink channel coefficients. If the terminal device transmits the SRS in a frequency-hopping manner, the SRS occupies multiple symbols in the time domain and occupies a continuous bandwidth in the frequency domain. Moreover, the frequency hopping subband occupied by the SRS on one symbol includes a part of the above-mentioned "continuous bandwidth", and the frequency hopping subband occupied by the SRS on different symbols is a different part of the above-mentioned "continuous bandwidth". Also, the terminal device may transmit the SRS on some or all resource blocks (resource blocks, RBs) of the frequency hopping subband. The SRS is generated based on the SRS sequence, and the SRS sequence is generated based on the base sequence. Since the base sequence is determined based on the number of subcarriers occupied by the SRS on each symbol, if terminal device 1 sends the SRS on all RBs of the frequency hopping subband, terminal device 2 sends the SRS on some RBs of the frequency hopping subband. When the SRS is sent, the base sequences determined by the terminal device 1 and the terminal device 2 are different.

However, when terminal equipment 1 and terminal equipment 2 use code division multiplexing to transmit SRS, since code division multiplexing requires terminal equipment 1 and terminal equipment 2 to use the same base sequence, terminal equipment 1 and terminal equipment 2 cannot By using code division multiplexing to transmit the SRS, the network device cannot determine the quality of the uplink channel, which reduces the flexibility of resource scheduling.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method and a communication device for signal transmission and reception, which can improve resource scheduling flexibility.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

In a first aspect, an embodiment of the present application provides a method for sending a signal, and the execution body of the method may be a terminal device or a chip applied in the terminal device. The following description takes the execution subject being a terminal device as an example. The method includes: the terminal device determines a sounding reference signal SRS sequence. The SRS sequence is obtained based on the base sequence, the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS, and the bandwidth of the frequency hopping subband is different from the bandwidth of the transmission subband. The SRS sequence is used to generate the SRS. Then, the terminal device sends the SRS to the network device.

In this way, in the case where the bandwidth of the frequency hopping subband and the bandwidth of the transmission subband are different, if the terminal device 1 determines the base sequence based on the frequency hopping subband and the transmission subband, even if the "bandwidth of the frequency hopping subband and the transmission subband of the terminal device 2" If the bandwidth of the sending subband is the same, the two terminal devices (ie, the terminal device 1 and the terminal device 2) can also send the SRS in a code division multiplexing manner. Since the base sequence is determined based on the frequency hopping subband and the transmission subband, the base sequence of the terminal device 1 is a part of the base sequence of the terminal device 2 . In other words, the base sequence of terminal device 1 and the base sequence of terminal device 2 correspond to the same elements of the same subcarrier. In the case of using different cyclic shift values, the terminal equipment 1 and the terminal equipment 2 can also send SRS in a code division multiplexing manner, so that the network equipment can determine the uplink channel quality and improve the flexibility of resource scheduling.

In one possible design, the SRS sequence satisfies:

r(n)=Ae ^jαn x(n)

0≤n≤N-1

where r(n) is the element with index n in the SRS sequence, x(n) is the element with index n in the base sequence, N is the length of the SRS sequence and base sequence, and A is a non-zero complex number, such as a power control factor , α is a real number, for example, the value of α is a cyclic shift value.

That is to say, in the case where the terminal device uses some RBs of the frequency hopping subband to send the SRS, the terminal device determines the SRS sequence according to the base sequence, and determines the SRS sequence according to the "process of using all the RBs of the frequency hopping subband to send the SRS". The formula for the SRS sequence is the same.

In one possible design, the base sequence is a partial sequence of the first sequence {y(m)}. Wherein, the first sequence {y(m)} is determined based on the bandwidth of the frequency hopping subband and the comb parameter of the SRS. That is, the base sequence is a partial fragment of the first sequence {y(m)}. The above-mentioned "partial sequence" may be a continuous sequence in the first sequence {y(m)}, or may be a discontinuous sequence. For example, taking the mode of comb tooth 2 as an example, in the case where the bandwidth of the frequency hopping subband is 24 RBs, if the bandwidth of the transmission subband is 12 RBs, the length of the first sequence is 144. The terminal device truncates half of the first sequence to obtain a base sequence with a length of 72.

In this way, if the “bandwidth of the frequency hopping subband and the bandwidth of the transmission subband” of the terminal device 1 are different, the “bandwidth of the frequency hopping subband and the bandwidth of the transmission subband” of the terminal device 2 are the same, because the base sequence of the terminal device 1 It is a partial sequence of the first sequence, the base sequence of terminal equipment 2 is the first sequence, and the elements corresponding to the same subcarrier in the base sequences of the two terminal equipments are the same, which means "terminal equipment 1 and terminal equipment 2 use code division multiplexing. The way to send SRS" laid the foundation.

Exemplarily, the first sequence satisfies:

Among them, y(m) is the element with index m in the first sequence, M denotes the length of the first sequence, and is a value determined based on the bandwidth of the frequency hopping subband and the comb parameter of the SRS, and M _ZC is determined based on M A prime number of , for example, M _ZC is the smallest prime number greater than M, or M _ZC is the largest prime number less than M, q is an integer, and 0<q<M _ZC .

In a possible design, the position of the base sequence in the first sequence is determined based on the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband. For example, when the transmission subband is in the first half of the frequency hopping subband, the base sequence is the first half sequence of the first sequence {y(m)}. When the transmission subband is the second half of the frequency hopping subband, the base sequence is the second half sequence of the first sequence {y(m)}.

In this way, if the “bandwidth of the frequency hopping subband and the bandwidth of the transmission subband” of the terminal device 1 are different, the “bandwidth of the frequency hopping subband and the bandwidth of the transmission subband” of the terminal device 2 are the same, because the base sequence of the terminal device 1 The position in the first sequence of the terminal device 2 is determined based on the position of the transmission subband in the frequency hopping subband, then the base sequence of the terminal device 1 corresponds to the base sequence (ie the first sequence) of the terminal device 2 The elements of the same subcarrier are the same, so that the terminal device 1 and the terminal device 2 can also transmit the SRS in a code division multiplexing manner, thereby improving the flexibility of resource scheduling.

In one possible design, the base sequence satisfies:

x(n)=y(m)

m=(n+n ₀ )mod M

0≤n≤N-1

0≤m≤M-1

Among them, n ₀ is a numerical value determined based on the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband, M represents the length of the first sequence, and is determined based on the bandwidth of the frequency hopping subband and the comb parameters of the SRS value of .

That is, "the element with index n in the base sequence" is "the element with index m in the first sequence". In this way, if the “bandwidth of the frequency hopping subband and the bandwidth of the transmission subband” of the terminal device 1 are different, and the “bandwidth of the frequency hopping subband and the bandwidth of the transmission subband” of the terminal device 2 are the same, then the base sequence of the terminal device 1 The elements corresponding to the same subcarrier in the base sequence (ie, the first sequence) of the neutralization terminal device 2 are the same, so that the terminal device 1 and the terminal device 2 can also transmit the SRS in a code division multiplexing manner.

In a second aspect, an embodiment of the present application provides a method for receiving a signal, and the execution body of the method may be a network device or a chip applied in the network device. The following description takes the execution subject being a network device as an example. The method includes: a network device receiving a sounding reference signal SRS from a terminal device. The network device determines the SRS sequence. The SRS sequence is obtained based on the base sequence, the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS, and the bandwidth of the frequency hopping subband is different from the bandwidth of the transmission subband. Then, the network device uses the SRS sequence to process the SRS.

In one possible design, the SRS sequence satisfies:

r(n)=Ae ^jαn x(n)

0≤n≤N-1

In one possible design, the base sequence is a partial sequence of the first sequence {y(m)}. Wherein, the first sequence {y(m)} is determined based on the bandwidth of the frequency hopping subband and the comb parameter of the SRS.

In one possible design, the first sequence satisfies:

In a possible design, the position of the base sequence in the first sequence is determined based on the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband.

In one possible design, the base sequence satisfies:

x(n)=y(m)

m=(n+n ₀ )mod M

0≤n≤N-1

0≤m≤M-1

In a third aspect, an embodiment of the present application provides a communication device, where the communication device may be a terminal device in the first aspect or any possible design of the first aspect, or a device disposed in the above-mentioned terminal device, or A chip that realizes the functions of the above-mentioned terminal equipment; the communication device includes a corresponding module, unit, or means (means) for realizing the above-mentioned method. accomplish. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a communication unit and a processing unit. Wherein, the processing unit is used to determine the sounding reference signal SRS sequence. The SRS sequence is obtained based on the base sequence, the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS, and the bandwidth of the frequency hopping subband is different from the bandwidth of the transmission subband. The SRS sequence is used to generate the SRS. The communication unit is used to send the SRS to the network device.

In one possible design, the SRS sequence satisfies:

r(n)=Ae ^jαn x(n)

0≤n≤N-1

In one possible design, the first sequence satisfies:

Among them, y(m) is the element with index m in the first sequence, M denotes the length of the first sequence, and is a value determined based on the bandwidth of the frequency hopping subband and the comb parameter of the SRS, and M _ZC is determined based on M The prime number of , M _ZC is the smallest prime number greater than M, or M _ZC is the largest prime number less than M, q is an integer, and 0<q<M _ZC .

In one possible design, the base sequence satisfies:

x(n)=y(m)

m=(n+n ₀ )mod M

0≤n≤N-1

0≤m≤M-1

In a fourth aspect, an embodiment of the present application provides a communication device, and the communication device may be a network device in the second aspect or any possible design of the second aspect, or a device disposed in the network device, or A chip that realizes the function of the above-mentioned network device; the communication device includes a corresponding module, unit, or means (means) for realizing the above-mentioned method, and the module, unit, or means can be realized by hardware, software, or by hardware. accomplish. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a communication unit and a processing unit. Wherein, the communication unit is used for receiving the sounding reference signal SRS from the terminal equipment. The processing unit is used to determine the SRS sequence. The SRS sequence is obtained based on the base sequence, the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS, and the bandwidth of the frequency hopping subband is different from the bandwidth of the transmission subband. The processing unit is further configured to process the SRS using the SRS sequence.

In one possible design, the SRS sequence satisfies:

r(n)=Ae ^jαn x(n)

0≤n≤N-1

In one possible design, the first sequence satisfies:

In one possible design, the base sequence satisfies:

x(n)=y(m)

m=(n+n ₀ )mod M

0≤n≤N-1

0≤m≤M-1

In a fifth aspect, an embodiment of the present application provides a communication device, including: a processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the first aspect or the first according to the instruction. The method of any of the possible designs on the one hand. The communication apparatus may be a terminal device in the first aspect or any possible design of the first aspect, or a chip that implements the functions of the terminal device.

In a sixth aspect, an embodiment of the present application provides a communication device, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the first aspect or the first aspect above. On the one hand any possible design method. The communication device may be the terminal device in the first aspect above, or a device including the above-mentioned terminal device, or a device included in the above-mentioned terminal device, such as a chip.

In a seventh aspect, an embodiment of the present application provides a chip, including a logic circuit and an input and output interface. Among them, the input and output interface is used to communicate with modules outside the chip, for example, the input and output interface outputs SRS. The logic circuit is used to run the computer program or instructions to implement the signal transmission method provided by the above first aspect or any possible design of the first aspect. The chip may be a chip that implements the terminal device function in the first aspect or any possible design of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication device, including: a processor and an interface circuit; the interface circuit is configured to communicate with modules other than the communication device. The processor is configured to execute a computer program or instructions to cause the communication device to perform the method described in the above first aspect or any possible design of the first aspect. The communication apparatus may be a terminal device in the first aspect or any possible design of the first aspect, or a chip that implements the functions of the terminal device.

In a ninth aspect, an embodiment of the present application provides a communication device, including: a processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the second aspect or the first according to the instruction. The method described in any of the two possible designs. The communication device may be a network device in the second aspect or any possible design of the second aspect, or a chip that implements the function of the network device.

In a tenth aspect, an embodiment of the present application provides a communication device, including: a processor and a memory; the memory is used for storing computer instructions, and when the processor executes the instructions, the communication device executes the second aspect or the first Two ways in any possible design. The communication device may be the network device in the second aspect, or a device including the network device, or a device included in the network device, such as a chip.

In an eleventh aspect, an embodiment of the present application provides a chip, including a logic circuit and an input and output interface. Among them, the input and output interface is used to communicate with modules other than the chip, for example, the input and output interface inputs the SRS. The logic circuit is used to run the computer program or instructions to implement the signal receiving method provided by the above second aspect or any possible design of the second aspect. The chip may be a chip that implements the network device function in the second aspect or any possible design of the second aspect.

In a twelfth aspect, an embodiment of the present application provides a communication device, including: a processor and an interface circuit; the interface circuit is configured to communicate with modules other than the communication device. The processor is configured to execute a computer program or instructions to cause the communication device to perform the method described in the above second aspect or any possible design of the second aspect. The communication device may be a network device in the second aspect or any possible design of the second aspect, or a chip that implements the function of the network device.

In a thirteenth aspect, embodiments of the present application provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer can execute any one of the preceding aspects. method.

In a fourteenth aspect, the embodiments of the present application provide a computer program product including instructions, which, when executed on a computer, enables the computer to execute the method of any one of the foregoing aspects.

In a fifteenth aspect, embodiments of the present application provide a circuit system, where the circuit system includes a processing circuit, and the processing circuit is configured to perform the method according to any one of the foregoing aspects.

In a sixteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes the terminal device described in the foregoing aspect and the network device described in the foregoing aspect.

Wherein, for the technical effect brought by any one of the designs of the second aspect to the sixteenth aspect, reference may be made to the beneficial effects in the corresponding methods provided above, and details are not repeated here.

Description of drawings

FIG. 1 is a schematic diagram of time-frequency resource distribution for sending SRS according to an embodiment of the present application;

FIG. 2 is a schematic diagram of still another time-frequency resource distribution for sending SRS according to an embodiment of the present application;

FIG. 3 is another schematic diagram of time-frequency resource distribution for sending SRS according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of a method for sending and receiving a signal according to an embodiment of the present application;

6 is a schematic flowchart of still another method for sending and receiving signals provided by an embodiment of the present application;

7 is a schematic diagram of the location of a sequence mapping provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present application.

Detailed ways

The terms "first" and "second" in the description and the drawings of the present application are used to distinguish different objects, or to distinguish different treatments of the same object, rather than to describe a specific order of the objects. Furthermore, references to the terms "comprising" and "having" in the description of this application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also Include other steps or units inherent to these processes, methods, products or devices. It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

First, the technical terms involved in the embodiments of the present application are introduced:

1. Reference signal (RS)

A reference signal, also referred to as a "pilot" signal, is a known signal provided by a transmitter to a receiver for channel estimation or channel sounding.

Reference signals are divided into uplink reference signals and downlink reference signals. The uplink reference signal refers to a signal sent by the terminal device to the network device, that is, the transmitting end is the terminal device, and the receiving end is the network device. The functions of the uplink reference signal include: uplink channel estimation (for coherent demodulation and detection of network equipment, or for network equipment to calculate precoding) and uplink channel quality measurement.

2. Sounding reference signal (SRS)

SRS is an uplink reference signal. SRS can be used for estimation of uplink channel quality and channel selection, calculation of signal-to-interference plus noise ratio (SINR) of uplink channel, and SRS can also be used for acquisition of uplink channel coefficients. In addition, in a time division duplexing (TDD) scenario, the uplink channel and the downlink channel are reciprocal. SRS can also be used to obtain downlink channel coefficients. The network device determines the uplink precoding matrix according to the uplink channel coefficient estimated by the SRS, so as to improve the transmission rate of the uplink, and/or, the network device determines the downlink precoding matrix according to the downlink channel coefficient estimated by the SRS, so as to improve the downlink transmission rate. increase the transmission rate and increase the system capacity.

Below, first of all, the transmission method of SRS is introduced:

Mode 1: Send SRS by frequency-hopping

When the system bandwidth is large, the transmit power of the terminal equipment is limited, and it is impossible to send the SRS of the whole system bandwidth in one symbol. It is necessary to send the SRS on multiple symbols by means of frequency hopping to obtain the channel of the whole system bandwidth. information. As shown in FIG. 1 , a square represents a resource block (resource block, RB) as an example, and one square represents one or more RBs. In the time domain, the SRS occupies multiple symbols. In the frequency domain, the SRS occupies a continuous bandwidth. In addition, the SRS on one symbol occupies a part of the "continuous bandwidth", and the SRS on different symbols occupies different parts of the "continuous bandwidth". At present, the new radio (NR) protocol supports terminal equipment to send SRS in a frequency hopping manner. Among them, the part in the "continuous bandwidth" occupied by the SRS on one symbol is described as "frequency hopping subband". The number of RBs occupied by the frequency hopping subband is described as "frequency hopping bandwidth" or "bandwidth of the frequency hopping subband".

The network device configures the SRS resource for the terminal device through radio resource control (radio resource control, RRC) signaling. The RRC signaling indicates information such as the number of ports of the SRS resource, the frequency domain position and time domain position of the SRS resource, the period of the SRS resource, the comb teeth, the cyclic shift value, or the sequence identification (ID). The frequency domain location of the SRS resource is indicated by a set of frequency domain parameters in the RRC signaling.

Taking the 3rd generation partnership project (3rd generation partnership project, 3GPP) protocol as an example, the frequency domain parameters include n _RRC , n _shift , B _SRS , C _SRS and b _hop . Wherein, B _SRS represents the bandwidth configuration of the SRS, C _SRS represents the bandwidth configuration index of the SRS, and b _hop represents the bandwidth occupied by the SRS on one symbol.

The terminal device determines the bandwidth occupied by the SRS, the starting position of the frequency domain and the frequency hopping pattern through the frequency domain parameters and the rules predetermined by the protocol. Below, taking the SRS on one symbol as an example, the determination process of "the bandwidth occupied by the SRS, the starting position of the frequency domain and the frequency hopping pattern" will be described:

Step 1, the terminal device determines the overall starting position of the SRS in the frequency domain according to the parameter n _RRC and the parameter n _shift .

Exemplarily, taking the SRS occupying multiple symbols in the time domain as an example, "the overall starting position of the SRS in the frequency domain" refers to the starting position of the SRS in the frequency domain on the first symbol.

Step 2, the terminal device determines the overall bandwidth of the SRS according to the parameter b _hop and the parameter C _SRS , and Table 1.

Wherein, the overall bandwidth of the SRS is the total number of RBs m _SRS,b' occupied for sending "SRS on multiple symbols". b'= _bhop .

Exemplarily, taking FIG. 1 as an example, when C _SRS =9 and b _hop =0, in combination with Table 1, the terminal device determines that the overall bandwidth of the SRS is 32 RBs, as shown by the bold numbers in Table 1. In FIG. 1, one square represents four RBs.

Step 3, the terminal device determines the frequency domain position of the SRS in each symbol according to the overall starting position of the SRS in the frequency domain and the overall bandwidth of the SRS.

Step 4, the terminal equipment parameters B _SRS and C _SRS , and Table 1 determine the number of RBs m _SRS,b occupied by the SRS in each symbol.

where b = B _SRS . Exemplarily, taking FIG. 1 as an example, when C _SRS =9 and B _SRS =2, in combination with Table 1, the terminal device determines that the number of RBs occupied by the SRS on each symbol is 8, as shown in bold in Table 1. numbers shown.

In the case of b _hop <B _SRS , the terminal equipment transmits the SRS in a frequency hopping manner. Among them, the number of frequency hopping x satisfies the following formula:

Among them, x represents the number of frequency hopping. N _b represents the number of branches on the layer with index b in the tree structure, and the value of N _b is determined by the parameter C _SRS and Table 1.

The relevant descriptions of Table 1 are as follows: Table 1 shows SRS configurations under different SRS bandwidths.

Table 1

Referring to Table 1, taking C _SRS =9 as an example, the tree structure of the SRS bandwidth is described: B _SRS = 0 means 0 layer, which is the highest layer of the tree structure, and the SRS bandwidth of this layer corresponds to 32 RBs bandwidth. N ₀ =1 means that there is one branch at level 0. B _SRS =1 means layer 1, the SRS bandwidth of this layer is the bandwidth corresponding to 16 RBs, and one SRS bandwidth of the upper layer (ie, layer 0) is divided into two SRS bandwidths of one layer. N ₁ =2 means that there are two branches of one layer. B _SRS =2 means 2 layers, the SRS bandwidth of this layer is the bandwidth corresponding to 8 RBs, and one SRS bandwidth of the upper layer (ie, 1 layer) is split into two 2-layer SRS bandwidths. N ₂ =2 means that there are two branches of the 2-layer. B _SRS =3 means 3 layers, the SRS bandwidth of this layer is the bandwidth corresponding to 4 RBs, and one SRS bandwidth of the upper layer (ie, 2 layers) is split into two 3-layer SRS bandwidths. N ₃ =2 means that there are two branches of the 3-layer.

Method 2: Send SRS on some RBs

The terminal equipment transmits the SRS on some RBs of the frequency hopping subband to improve the capacity and coverage of the SRS. Referring to FIG. 2, (a) in FIG. 2 shows a scenario in which all RBs of the frequency hopping subband are used to transmit SRS, and (b) in FIG. 2 shows that the first half of the RBs in the frequency hopping subband are used for transmitting SRS Figure 2 (c) shows the scenario in which the middle part of the RB of the frequency hopping subband is used for sending SRS, and (d) in Figure 2 shows that the second half of the RB of the frequency hopping subband is used for sending SRS scene. Among them, in the frequency domain, the part of a frequency hopping subband used for sending SRS is described as a "transmission subband". The number of RBs occupied by the transmission subband is described as "transmission bandwidth" or "transmission subband bandwidth". On a frequency hopping subband, RBs used for sending SRS may be continuous RBs in the frequency domain (as shown in FIG. 2 ), or may be non-consecutive RBs in the frequency domain, which are not limited in this embodiment of the present application.

It should be noted that, optionally, in the scenarios of Mode 1 and Mode 2, the terminal device can send the SRS in a comb mode. That is, on the RB used to transmit the SRS, the SRS occupies the subcarriers at equal intervals instead of occupying all the subcarriers. For example, referring to FIG. 3 , FIG. 3 shows a scenario in which the SRS is sent in the manner of comb tooth 2 and comb tooth 4 . In Figure 3, one square represents one RE. In the case of using comb tooth 2 to transmit the SRS, the subcarriers for transmitting the SRS are separated by one subcarrier. In the case where the SRS is transmitted by using the comb teeth of 4, the sub-carriers for transmitting the SRS are spaced by three sub-carriers.

Then, the SRS sending process is described:

Taking NR as an example, the base sequence of the SRS is determined based on the number of subcarriers occupied by the SRS in each symbol, and the base sequence is the low peak to average power ratio of the ZC (Zadoff-Chu) sequence, PARP) sequence. For each length, 30 (or 60) base sequences are defined in the NR. After the sequence length of the SRS sequence is determined, a base sequence is determined from the 30 (or 60) base sequences of the corresponding length as the SRS. base sequence, and then determine the SRS sequence and send the SRS. Wherein, "which base sequence of 30 (or 60) base sequences is used as the base sequence of the SRS" is configured through high-layer signaling. The "SRS sending process" is as follows:

Step 1, the terminal equipment determines the time-frequency resources of the SRS.

The time-frequency resources of the SRS include symbols occupied by the SRS in the time domain and subcarriers occupied by the SRS in each symbol.

Optionally, when the terminal device sends the SRS in a comb-tooth manner, the number of subcarriers occupied by the SRS on each symbol satisfies the following relationship:

in,

represents the number of subcarriers occupied by the SRS on each symbol, m _{SRS, b} represents the number of RBs occupied by the SRS on each symbol,

Indicates the number of subcarriers included in one RB, and K _TC represents the size of the comb teeth, such as 2 or 4.

Step 2, the terminal device determines the base sequence and SRS sequence of the SRS on each symbol according to the time-frequency resources of the SRS and high-layer signaling.

The sequence length of the SRS sequence represents the number of elements included in the SRS sequence, and the sequence length of the SRS sequence is equal to the number of subcarriers occupied by the SRS on each symbol.

Exemplarily, the terminal device can determine the sequence length of the SRS sequence according to the number of subcarriers occupied by the SRS on each symbol, and the terminal device can determine the sequence length of the SRS sequence according to the number of subcarriers occupied by the SRS on each symbol, high-layer signaling, and the time domain of the SRS. position, which determines the base sequence used by the SRS on each symbol. Then, the terminal device determines the cyclic shift value α according to the signaling configuration, and determines the SRS sequence according to the base sequence and the cyclic shift value α. Among them, taking the base sequence as the ZC sequence as an example, the SRS sequence satisfies the following formula:

Among them, r(n) represents the element with index n in the SRS sequence, N represents the sequence length of the SRS sequence, A is a non-zero complex number, such as a power control factor, α is a real number, such as a cyclic shift value, x _q (n mod N _ZC ) represents the element with index nmod N _ZC in the base sequence, N _ZC is the largest prime number less than N, and q is the root of the ZC sequence, determined by the signaling configuration, the time domain position of the SRS, and N _ZC .

Step 3, the terminal equipment maps the SRS sequence to the subcarriers to generate the SRS.

Step 4, the terminal device sends the SRS to the network device. Correspondingly, the network device receives the SRS from the terminal device.

Step 5, the network device processes the received SRS.

It should be noted that, in the embodiments of the present application, the "SRS sending process" is described by taking the ZC sequence as an example. When the sequence length of the SRS sequence is less than or equal to 24, the base sequence of the SRS is a low PAPR computer generated sequence (CGS).

However, in the above-mentioned "SRS sending process", if terminal device 1 sends SRS on all RBs of the frequency hopping subband, as shown in Mode 1, terminal device 2 sends SRS on some RBs of the frequency hopping subband, as shown in As shown in the second manner, the base sequences determined by the terminal device 1 and the terminal device 2 are different. In the case where terminal equipment 1 and terminal equipment 2 use code division multiplexing to transmit SRS, since code division multiplexing requires terminal equipment 1 and terminal equipment 2 to use the same base sequence and use different cyclic shift values, the terminal equipment Device 1 and terminal device 2 cannot transmit the SRS in a code division multiplexing manner, and the network device cannot determine the quality of the uplink channel, which reduces the flexibility of resource scheduling.

In view of this, the embodiments of the present application provide a method for transmitting and receiving signals, and the methods for transmitting and receiving signals in the embodiments of the present application are applicable to various communication systems. The methods for sending and receiving signals provided in the embodiments of the present application may be applied to a long term evolution (LTE) system, or a fifth-generation (5G) communication network, or other similar networks, or in future in other networks. FIG. 4 is a schematic diagram of the architecture of a communication system applicable to the method for sending and receiving signals according to an embodiment of the present application. The communication system may include a terminal device 40 and a network device 41 . The terminal device 40 and the network device 41 are connected wirelessly. The number of terminal devices 40 may be one or more, and the number of network devices 41 may also be one or more. Only one network device and two terminal devices are shown in FIG. 4 . FIG. 4 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the method for signal transmission and reception according to the embodiment of the present application.

The terminal device 40, also known as user equipment (UE), mobile station (MS), mobile terminal (MT) or terminal (terminal), etc., is a device that provides voice/data connectivity to users. devices, such as handheld or in-vehicle devices with wireless connectivity. The terminal equipment can be specifically: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality) reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid Terminal, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, terminal equipment in 5G communication network or communication network after 5G, etc. , which is not limited in the embodiments of the present application.

The network device 41 is a device in a wireless communication network, for example, a radio access network (RAN) node that connects the terminal device 40 to the wireless communication network. At present, some examples of RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit) , BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), or 5G communication network or network-side equipment in the communication network after 5G, etc.

The communication systems and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The methods for sending and receiving signals provided by the embodiments of the present application are described in detail below.

It should be noted that the name of the message between each network element or the name of each parameter in the message in the following embodiments of this application is just an example, and other names may also be used in the specific implementation. Repeat.

The embodiment of the present application provides a method for signal transmission and reception, which is used in the process of SRS transmission and reception. Referring to Figure 5, the method for signal transmission and reception includes the following steps:

S501. A terminal device determines an SRS sequence.

The SRS sequence is obtained based on the base sequence, and the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS. The bandwidth of the frequency hopping subband is different from the bandwidth of the transmission subband. For example, in the case where the terminal device transmits the SRS in the second manner, the bandwidth of the frequency hopping subband is larger than the bandwidth of the transmission subband.

Exemplarily, the SRS sequence satisfies the following formula:

Among them, r(n) represents the element with index n in the SRS sequence, N represents the sequence length of the SRS sequence, A is a non-zero complex number, such as a power control factor, α is a real number, such as a cyclic shift value, x(n) represents The element at index n in the base sequence.

That is to say, when the terminal device transmits the SRS using the above-mentioned method 2, the terminal device determines the SRS sequence according to the base sequence, and the formula for determining the SRS sequence is the same as the formula for determining the SRS sequence in "the process of using the method 1 to send the SRS".

Exemplarily, referring to FIG. 6, the implementation process of S501 includes S501a, S501b and S501c:

S501a, the terminal device determines the first sequence.

The first sequence is determined based on the bandwidth of the frequency hopping subband and the comb tooth parameter of the SRS. The comb parameter of the SRS indicates the comb condition of the SRS. For example, in the case where the comb parameter of the SRS is K _TC , if the value of K _TC is 2, it means that there is one sub-carrier between the sub-carriers for sending the SRS. If the value of K _TC is 4, it means that there are three sub-carriers between the sub-carriers for sending the SRS.

Exemplarily, in the case of "the bandwidth of the frequency hopping subband is m _SRS,b , and the comb tooth parameter of the SRS is K _TC ", the terminal device determines the sequence length of the first sequence according to formula (2). For the sequence length of the first sequence, the terminal device determines a base sequence from the predefined 30 (or 60) base sequences as the first sequence. For details, please refer to Step 1 and Step 1 in the above-mentioned "SRS Transmission Process" 2, which will not be repeated here. For example, taking the mode of comb tooth 2 as an example, the bandwidth of the frequency hopping subband is 24 RBs, and the terminal device determines that the sequence length of the first sequence is 144.

Exemplarily, the first sequence is denoted as {y(m)}. Among them, the first sequence satisfies the following formula:

Among them, y(m) is the element with index m in the first sequence, M denotes the length of the first sequence, and is a value determined based on the bandwidth of the frequency hopping subband and the comb parameter of the SRS, and M _ZC is determined based on M prime number. For example, M _ZC is the smallest prime number greater than M, or M _ZC is the largest prime number less than M. q is an integer, and 0<q<M _ZC . For example, the value of q is determined by the signaling configuration, the time domain position of the SRS, and the _NZC .

S501b, the terminal device determines the base sequence according to the first sequence.

where the base sequence is a partial sequence of the first sequence {y(m)}. That is, the base sequence is a partial fragment of the first sequence {y(m)}. Alternatively, the base sequence includes a partial sequence of the first sequence {y(m)}. For example, still taking the mode of comb tooth 2 as an example, in the case where the bandwidth of the frequency hopping subband is 24 RBs, if the bandwidth of the transmission subband is 12 RBs, the terminal equipment intercepts half of the first sequence to obtain A base sequence of length 72.

Exemplarily, the terminal device determines the position of the base sequence in the first sequence according to the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband. That is, the position of the base sequence in the first sequence is determined based on the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband. For example, when the transmission subband is in the first half of the frequency hopping subband, the base sequence is the first half sequence of the first sequence {y(m)}. When the transmission subband is the second half of the frequency hopping subband, the base sequence is the second half sequence of the first sequence {y(m)}. The transmission subbands in a frequency hopping subband may be continuous or discontinuous, which is not limited in this embodiment of the present application. When the transmit subband is part of a frequency hopping subband and is a discontinuous subband, the base sequence is a discontinuous segment in the first sequence {y(m)}. For example, in the case where the transmit subbands are the first and last quarters of the frequency hopping subband, the base sequence is the first and last quarters of the first sequence {y(m)} A spliced sequence.

Exemplarily, the following formula is satisfied between "the element of element index n in the base sequence" and "the element of element index m of the first sequence":

where x(n) is the element with index n in the base sequence, and N represents the length of the base sequence. y(m) is an element whose index is m in the first sequence, where M represents the length of the first sequence, and is a value determined based on the bandwidth of the frequency hopping subband and the comb tooth parameter of the SRS. n ₀ is a value determined based on the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband.

For example, taking FIG. 7 as an example, one square represents one RE. Unpatterned squares represent REs that do not carry SRS. The squares of the filled pattern represent the REs that carry the SRS, and different patterns represent different values of elements mapped to the REs. Taking the transmission mode of comb tooth 2 as an example, the first sequence and the base sequence are described: some elements of the first sequence are as follows: {y(0), y(1), y(2), y(3), y (4), y(5), y(6)}. The SRS determined based on the first sequence is shown in the left column of FIG. 7 . The transmit subband is in the first half of the frequency hopping subband, so the base sequence is in the first half of the first sequence. In this case, n ₀ takes the value 0. That is, x(0)=y(0), x(1)=y(1), x(2)=y(2), and x(3)=y(3). In this case, "the first half of the SRS sequence determined based on the first sequence {y(m)}" and "the SRS sequence determined based on the base sequence x(n)" are the same. The above-mentioned length of the first sequence and the length of the base sequence are only examples, and the length of the first sequence and the length of the base sequence may be any positive integers, which are not limited in this embodiment of the present application.

S501c, the terminal device determines the SRS sequence according to the base sequence.

Exemplarily, the terminal device uses formula (4) to determine the SRS sequence. The base sequence in formula (4) is the base sequence x(n) determined in S501b.

In this way, the terminal equipment can determine the base sequence based on the frequency hopping bandwidth and transmission bandwidth, and the position of the transmission subband in the frequency hopping subband, so that the terminal equipment with "different frequency hopping bandwidth and transmission bandwidth" and the "frequency hopping bandwidth" can determine the base sequence. The base sequence determined by the terminal equipment with the same transmission bandwidth has the same elements on the same subcarrier.

Wherein, the SRS sequence is used to generate the SRS. For example, the terminal equipment maps the SRS sequence to the subcarriers to generate the SRS to be sent. For the detailed implementation process, reference may be made to the prior art, which will not be repeated here.

S502, the terminal device sends the SRS to the network device. Correspondingly, the network device receives the SRS from the terminal device.

Exemplarily, still taking the sending manner of comb tooth 2 as an example, the terminal device sends the SRS to the network device on the time-frequency resource of the SRS. The time domain resource of the SRS includes one or more symbols in the time domain, and the multiple symbols occupied by the SRS may be continuous or discontinuous, which is not limited in this embodiment of the present application. The frequency domain resource of the SRS includes one or more RBs in the frequency domain, and the multiple RBs occupied by the SRS may be continuous or discontinuous, which is not limited in this embodiment of the present application. And, in each RB of "one or more RBs in the frequency domain", the subcarriers used to transmit the SRS are separated by one subcarrier. The "RB used for transmitting the SRS" is determined based on the frequency hopping bandwidth and the transmission bandwidth, and the position of the transmission subband in the frequency hopping subband.

S503, the network device determines the SRS sequence.

For the implementation process of S503, reference may be made to the relevant description of S501, which will not be repeated here. Compared with S501, the difference of S503 is that the determination process of the SRS sequence is performed by the network device.

S504, the network device uses the SRS sequence to process the SRS.

The "SRS sequence" in S504 is the sequence determined by the network device through S503. The "SRS" to be processed in S504 is the signal received by the network device through S502.

Exemplarily, the network device performs channel estimation or channel quality measurement based on the SRS sequence and the SRS to obtain uplink channel quality, and then allocates RBs with better uplink channel quality to the terminal device. In the TDD scenario, the uplink channel and the downlink channel are reciprocal. The network device can also determine the downlink channel coefficient based on the processing result of S504. That is, the SRS can also be used to obtain downlink channel coefficients.

In the method for signal transmission and reception provided by the embodiment of the present application, in the case where the bandwidth of the frequency hopping subband and the bandwidth of the transmission subband are different, if the terminal device 1 determines the base sequence based on the frequency hopping subband and the transmission subband, even if the terminal device 1 determines the base sequence based on the frequency hopping subband and the transmission subband If the "bandwidth of the frequency hopping subband and the bandwidth of the sending subband" of the device 2 are the same, the two terminal devices (ie, the terminal device 1 and the terminal device 2) can also transmit the SRS in a code division multiplexing manner. Since the base sequence is determined based on the frequency hopping subband and the transmission subband, the base sequence of terminal equipment 1 is a partial sequence in the base sequence of terminal equipment 2, that is, the base sequence of terminal equipment 1 and the base sequence of terminal equipment 2 The elements corresponding to the same subcarrier are the same. In the case of using different cyclic shift values, the terminal equipment 1 and the terminal equipment 2 can also send the SRS in a code division multiplexing manner, so that the network equipment can determine the uplink channel quality and improve the flexibility of resource scheduling.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. Correspondingly, an embodiment of the present application further provides a communication device, and the communication device may be a network element in the foregoing method embodiments, or a device including the foregoing network element, or a component usable for a network element. It can be understood that, in order to realize the above-mentioned functions, the communication apparatus includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Optionally, an embodiment of the present application provides a communication apparatus (for example, the communication apparatus may be a chip or a chip system), and the communication apparatus includes an input and output interface and a logic circuit.

For example, taking the chip implemented as the function of the terminal device in FIG. 5 in the above method embodiment as an example, the input/output interface is used to output the SRS, and/or the input/output interface is also used to perform other transceivers on the terminal device side in the embodiment of the present application step. The logic circuit is used to perform S501 on the terminal device side, and/or the logic circuit is also used to perform other processing steps on the terminal device side in this embodiment of the present application.

For example, taking the chip implemented as the function of the network device shown in FIG. 5 in the above method embodiment as an example, the input/output interface is used to input the SRS, and/or the input/output interface is also used to perform other transceivers on the network device side in the embodiment of the present application step. The logic circuit is used to execute S503 and S504, and/or the logic circuit is also used to execute other processing steps on the network device side in the embodiments of the present application.

FIG. 8 shows a schematic structural diagram of a communication apparatus 800 . The communication apparatus 800 may exist in the form of software, or may be a device, or a component in a device (such as a chip system).

The communication device 800 includes a communication unit 803 and a processing unit 802 .

The communication unit 803 is an interface circuit of the communication device 800, and is used for receiving or sending signals from other devices. For example, when the communication device 800 is implemented in the form of a chip, the communication unit 803 is an interface circuit used by the chip to receive signals from other chips or devices, or an interface circuit used by the chip to send signals to other chips or devices .

The communication unit 803 may include a communication unit for communicating with a terminal device and a communication unit for communicating with other network devices, and these communication units may be integrated together or independently implemented.

When the communication apparatus 800 is used to implement the functions of the above terminal equipment, for example, the processing unit 802 may be used to support the communication apparatus 800 to perform S501 in FIG. 5 , and/or other processes for the solutions described herein. The communication unit 803 is used to support communication between the communication apparatus 800 and other network elements (eg, network equipment). For example, the communication unit is used to support the communication apparatus 800 to perform S502 shown in FIG. 5 , and/or other processes for the solutions described herein.

When the communication apparatus 800 is used to implement the function of the network device in the above method, exemplarily, the processing unit 802 may be used to support the communication apparatus 800 to perform S503 and S504 in FIG. 5 , and/or for the solutions described herein. other processes. The communication unit 803 is used to support communication between the communication apparatus 800 and other network elements (eg, terminal equipment). For example, the communication unit is used to support the communication apparatus 800 to perform S502 shown in FIG. 5, and/or other processes for the schemes described herein.

Optionally, the communication apparatus 800 may further include a storage unit 801 for storing program codes and data of the communication apparatus 800, and the data may include but not limited to original data or intermediate data.

The processing unit 802 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (application specific integrated circuit) circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. A processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

The communication unit 803 may be a communication interface, a transceiver or a transceiver circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces, for example, may include: a first access network device and a second Interfaces and/or other interfaces between access network devices.

The storage unit 801 may be a memory.

When the processing unit 802 is a processor, the communication unit 803 is a communication interface, and the storage unit 801 is a memory, the communication apparatus 900 involved in this embodiment of the present application may be as shown in FIG. 9 .

Referring to FIG. 9 , the communication device 900 includes: a processor 902 , a transceiver 903 , and a memory 901 .

The transceiver 903 can be an independently set transmitter, which can be used to send information to other devices, and the transceiver can also be an independently set receiver, which can be used to receive information from other devices. The transceiver may also be a component that integrates the functions of sending and receiving information, and the specific implementation of the transceiver is not limited in this embodiment of the present application.

Optionally, the communication device 900 may further include a bus 904 . The transceiver 903, the processor 902 and the memory 901 can be connected to each other through a bus 904; the bus 904 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc. The bus 904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus.

Those of ordinary skill in the art can understand that: in the above-mentioned embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital video discs (DVDs), or semiconductor media (eg, solid state disks, SSDs)) Wait.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical or other forms.

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

From the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general-purpose hardware, and of course hardware can also be used, but in many cases the former is a better implementation manner . Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art. The computer software products are stored in a readable storage medium, such as a floppy disk of a computer. , a hard disk or an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and changes or substitutions within the technical scope disclosed in the present application should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A method for signaling, comprising:

The terminal device determines the sounding reference signal SRS sequence, wherein the SRS sequence is obtained based on a base sequence, the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS, and the bandwidth of the frequency hopping subband and the transmission subband are determined. The bandwidths of the transmission subbands are different; the SRS sequence is used to generate the SRS;

The terminal device sends the SRS to the network device.
A signal receiving method, comprising:

The network device receives the sounding reference signal SRS from the terminal device;

The network device determines an SRS sequence, wherein the SRS sequence is obtained based on a base sequence, the base sequence is determined based on the frequency hopping subband and the transmission subband of the SRS, and the bandwidth of the frequency hopping subband is is different from the bandwidth of the transmission subband;

The network device uses the SRS sequence to process the SRS.
A communication device, comprising: a processing unit and a communication unit, wherein,

The processing unit is configured to determine a sounding reference signal SRS sequence, wherein the SRS sequence is obtained based on a base sequence, and the base sequence is determined based on a frequency hopping subband and a transmission subband of the SRS, and the frequency hopping The bandwidth of the subband is different from the bandwidth of the transmission subband; the SRS sequence is used to generate the SRS;

The communication unit is configured to send the SRS to a network device.
A communication device, comprising: a processing unit and a communication unit, wherein,

the communication unit, configured to receive a sounding reference signal SRS from a terminal device;

The processing unit is configured to determine an SRS sequence, wherein the SRS sequence is obtained based on a base sequence, and the base sequence is determined based on a frequency hopping subband and a transmission subband of the SRS, and the frequency hopping subband is the bandwidth of the band is different from the bandwidth of the transmit subband;

The processing unit is further configured to use the SRS sequence to process the SRS.
The method according to claim 1 or 2, or the device according to claim 3 or 4, wherein the SRS sequence satisfies:

r(n)=Ae jαn x(n)

0≤n≤N-1

Wherein, the r(n) is the element with the index n in the SRS sequence, the x(n) is the element with the index n in the base sequence, and the N is the SRS sequence and the base sequence. The length of the sequence, the A is a non-zero complex number, and the α is a real number.
The method according to claim 1, 2 or 5, or the device according to claim 3, 4 or 5, wherein:

The base sequence is a partial sequence of a first sequence {y(m)}, wherein the first sequence {y(m)} is determined based on the bandwidth of the frequency hopping subband and the comb tooth parameter of the SRS of.
The method according to claim 6, or the device according to claim 6, wherein the first sequence satisfies:

y(m)=z(m mod M ZC )

0≤m≤M-1

Wherein, the y(m) is the element whose index is m in the first sequence, where M represents the length of the first sequence, and is based on the bandwidth of the frequency hopping subband and the comb of the SRS The numerical value determined by the tooth parameter, the M ZC is a prime number determined based on the M, the q is an integer, and 0<q<M ZC .
The method according to claim 6 or 7, or the apparatus according to claim 6 or 7, wherein the position of the base sequence in the first sequence is based on the frequency of the transmission subband The domain position and the frequency domain position of the frequency hopping subband are determined.
The method according to any one of claims 6 to 8, or the device according to any one of claims 6 to 8, wherein the base sequence satisfies:

x(n)=y(m)

m=(n+n 0 )mod M

0≤n≤N-1

0≤m≤M-1

Wherein, the n 0 is a value determined based on the frequency domain position of the transmission subband and the frequency domain position of the frequency hopping subband, the M represents the length of the first sequence, and is based on the hopping subband. The value determined by the bandwidth of the frequency subband and the comb parameter of the SRS.
A communication device, comprising: a processor and a memory, the processor is coupled to the memory, the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, The method of signal transmission as claimed in claim 1 or the method of signal transmission as claimed in any one of claims 5 to 9 is implemented, or the method of signal reception as claimed in claim 2 or in claims 5 to 9 Any one of the methods of signal reception is implemented.
A chip, characterized in that the chip includes a logic circuit and an input/output interface, the input/output interface is used to communicate with modules other than the chip, and the logic circuit is used to run a computer program or instruction to achieve The method of signal transmission as claimed in claim 1, or the method of signal transmission as claimed in any one of claims 5 to 9, or to realize the method of signal reception as claimed in claim 2, or the method of claim 5 to The method for receiving a signal according to any one of 9.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program, and when the program is invoked by a processor, the method for sending a signal according to claim 1 or any one of claims 5 to 9 The method of signal transmission described in item 2 is performed, or the method of signal reception described in claim 2 or the method of signal reception described in any one of claims 5 to 9 is performed.