Method and device for transmitting sounding reference signal, and medium

Abstract

The invention relates to a sounding reference signal transmission method and device and a medium, and the method comprises the steps: determining offset information based on a pseudorandom sequence function, the offset information is used for carrying out the randomization processing of an SRS signal transmitted by a terminal, the pseudorandom sequence function is determined based on identification information, and the identification information is used for carrying out the randomization processing of the SRS signal transmitted by the terminal; the identification information is sent to the terminal by network equipment; and transmitting the SRS signal based on the offset information. According to the technical scheme, interference caused by the fact that the offset of the SRS of the edge user is the same as the offset of the SRS of the center user can be avoided, and the estimation performance of an uplink channel is improved.

Description

[0001] This application is a divisional application. The application number of the original application is 202280004613.5, the application date is November 6, 2022, and the name of the invention is “A method, device and medium for transmitting a detection reference signal”. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a method, device and medium for transmitting a sounding reference signal. Background Art

[0003] Multi-point coordinated transmission technology can improve cell edge coverage and provide balanced service quality for each user in the service area. Among them, multi-point coordinated transmission includes coherent joint transmission (CJT) and non-coherent joint transmission (NCJT). When CJT transmission is adopted in the time division duplexing (TDD) system, the multiple coordinated transmission and reception points (TRP) need to obtain accurate uplink channel information of edge users. The uplink channel from the current user to multiple TRPs can be estimated by sending SRS to each TRP by the terminal device.

[0004] However, the transmission of SRS of users in edge cells is usually interfered by the transmission of SRS of users in the center of adjacent cells, resulting in poor uplink channel estimation performance. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the present disclosure provides a method, device and medium for transmitting a sounding reference signal.

[0006] According to a first aspect of an embodiment of the present disclosure, a method for transmitting a sounding reference signal is provided, the method being executed by a terminal, including:

[0007] Determine offset information based on a pseudo-random sequence function, where the offset information is used to perform random processing on an SRS signal transmitted by the terminal, where the pseudo-random sequence function is determined based on identification information, where the identification information includes a cell identification of a cell where the terminal is located and / or a sending / receiving point identification corresponding to the terminal;

[0008] Based on the offset information, an SRS signal is transmitted.

[0009] In one implementation, the pseudo-random sequence function is determined based at least on a random sequence initialization function and a maximum offset value, where the maximum offset value includes a comb value of an SRS sequence and / or a maximum number of maximum cyclic shifts;

[0010] The random sequence initialization function is determined based on the identification information, or based on an SRS resource configuration parameter and the identification information.

[0011] In one implementation, the random sequence initialization function satisfies the following formula:

[0012] C init (N ID )=N ID ;or

[0013]

[0014] Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a radio frame.

[0015] In one implementation, the SRS resource configuration parameter includes at least one of the following:

[0016] The number of symbols occupied by the SRS sequence in the time slot;

[0017] The number of time slots occupied by the SRS sequence in a radio frame;

[0018] The starting position of the SRS sequence transmission in a time slot;

[0019] An integer value determined based on the maximum value of the offset.

[0020] In one implementation, the offset information includes offset information in an SRS comb transmission, and the offset information in the SRS comb transmission is used to determine a frequency domain starting position of an SRS sequence corresponding to each SRS port after being offset in an SRS comb transmission;

[0021] The maximum offset value is the comb value of the SRS sequence;

[0022] The pseudo-random sequence function satisfies the following formula:

[0023]

[0024] in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0025] In one implementation, the value of Y is determined by the linear sum of one or more of the following: 0;

[0027]

[0028] The time slot t in which the SRS is transmitted;

[0029] SRS Sequence ID

[0030] N ID ;

[0031] k′∈{0,1,...,K TC -1};

[0032] Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0033] In one implementation, determining the offset information based on the pseudo-random sequence function includes:

[0034] Based on the first pseudo-random sequence function, the comb transmission offset parameter of the SRS sequence is randomized to obtain the offset information within the SRS comb transmission.

[0035] In one embodiment, the comb transmission offset parameter of the SRS sequence includes an offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value

[0036] The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods:

[0037] Based on the first pseudo-random sequence function, and stated Performing overall randomization to obtain offset information within the SRS comb transmission; and

[0038] Based on the first pseudo-random sequence function, After randomization, Get the offset information within the SRS comb transmission.

[0039] In one embodiment, the first pseudo-random sequence function is used to and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows:

[0040]

[0041] in, is the offset within the SRS comb transmission, n shi f t is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0042] In one implementation, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0043]

[0044] in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0045] In one implementation, the transmitting of the SRS signal based on the offset information includes:

[0046] Determine the frequency domain position occupied by the SRS based on the offset information in the SRS comb transmission, the starting position within the specified bandwidth size during partial frequency domain transmission, and the starting position of each hop;

[0047] The SRS is transmitted at a determined frequency domain position.

[0048] In one implementation, the offset information includes cyclic shift offset information;

[0049] The maximum value of the offset is the maximum number of maximum cyclic shifts;

[0050] The pseudo-random sequence function satisfies the following formula:

[0051]

[0052] in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, which is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0053] In one embodiment, the value of Y' is determined by the linear sum of one or more of the following: 0;

[0055]

[0056] The time slot t in which the SRS is transmitted;

[0057] SRS Sequence ID

[0058] N ID ;

[0059] k′∈{0,1,...,K TC -1};

[0060] t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and

[0061] A different SRS port index or a different port index minus a third reference value n re f.

[0062] In one implementation, determining the offset information based on the pseudo-random sequence function includes:

[0063] Based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly offset to obtain cyclic shift offset information.

[0064] In one implementation, based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly offset to obtain a calculation formula for cyclic shift offset information, using at least one of the following:

[0065]

[0066] as well as

[0067]

[0068] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0069] In one implementation, the transmitting of the SRS signal based on the offset information includes:

[0070] Generate an SRS random sequence based on the cyclic shift offset information;

[0071] The SRS random sequence is transmitted.

[0072] In one embodiment, the method further comprises:

[0073] In response to receiving a change indication sent by a network device, changing the comb value offset of the sounding reference signal; or

[0074] In response to receiving a change indication sent by a network device, changing a cyclic shift value of the sounding reference signal;

[0075] The change indication is sent by the network device to the terminal when the time-frequency domain resources for transmitting the sounding reference signal overlap with those for transmitting other sounding reference signals.

[0076] According to a second aspect of an embodiment of the present disclosure, a method for transmitting a sounding reference signal is provided, the method being executed by a network device, the method comprising:

[0077] Sending identification information to the terminal, so that the terminal determines a pseudo-random sequence function based on the identification information, and determines offset information based on the pseudo-random sequence function, wherein the identification information includes a cell identifier of a cell where the terminal is located and / or a sending / receiving point identifier corresponding to the terminal;

[0078] The receiving terminal determines and transmits an SRS signal based on the offset information.

[0079] In one embodiment, the method further comprises:

[0080] Sending SRS resource configuration parameters to the terminal so that the terminal determines a random sequence initialization function based on the identification information or the SRS resource configuration parameters and the identification information, and determines the pseudo-random sequence function based at least on the random sequence initialization function and the maximum offset value, wherein the maximum offset value includes the comb value of the SRS sequence and / or the maximum number of maximum cyclic shifts.

[0081] In one implementation, the random sequence initialization function satisfies the following formula:

[0082] C init (N ID )=N ID ;or

[0083]

[0084] Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots occupied by the SRS sequence in the radio frame.

[0085] In one implementation, the SRS resource configuration parameter includes at least one of the following:

[0086] The number of symbols occupied by the SRS sequence in the time slot;

[0087] The number of time slots occupied by the SRS sequence in the radio frame;

[0088] The starting position of the SRS sequence transmission in a time slot;

[0089] An integer value determined based on the maximum value of the offset.

[0090] In one implementation, the offset information includes offset information in an SRS comb transmission, and the offset information in the SRS comb transmission is used to determine a frequency domain starting position of an SRS sequence corresponding to each SRS port after being offset in an SRS comb transmission;

[0091] The maximum offset value is the comb value of the SRS sequence;

[0092] The pseudo-random sequence function satisfies the following formula:

[0093]

[0094] in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0095] In one implementation, the value of Y is determined by the linear sum of one or more of the following: 0;

[0097]

[0098] The time slot t in which the SRS is transmitted;

[0099] SRS Sequence ID

[0100] N ID ;

[0101] k′∈{0,1,...,K TC -1};

[0102] Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0103] In one implementation, the determining of the offset information based on the pseudo-random sequence function includes:

[0104] Based on the first pseudo-random sequence function, randomizing the comb transmission offset parameter of the SRS sequence to obtain offset information within the SRS comb transmission;

[0105] The comb transmission offset parameter of the SRS sequence includes the offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value

[0106] The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods:

[0107] Based on the first pseudo-random sequence function, and stated Performing overall randomization to obtain offset information within the SRS comb transmission; and

[0108] Based on the first pseudo-random sequence function, After randomization, Get the offset information within the SRS comb transmission.

[0109] In one implementation, based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows:

[0110]

[0111] in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0112] In one implementation, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0113]

[0114] in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0115] In one implementation, the offset information includes cyclic shift offset information;

[0116] The maximum value of the offset is the maximum number of maximum cyclic shifts;

[0117] The pseudo-random sequence function satisfies the following formula:

[0118]

[0119] in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, which is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0120] In one embodiment, the value of Y' is determined by the linear sum of one or more of the following: 0;

[0122]

[0123] The time slot t in which the SRS is transmitted;

[0124] SRS Sequence ID

[0125] N ID ;

[0126] k′∈{0,1,...,K TC -1};

[0127] t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and

[0128] A different SRS port index or a different port index minus a third reference value n ref .

[0129] In one implementation, the determining of the offset information based on the pseudo-random sequence function includes:

[0130] Based on the second pseudo-random sequence function, randomly shift the cyclic shift parameter of the SRS sequence to obtain cyclic shift offset information;

[0131] Among them, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS sequence is randomly offset to obtain the cyclic shift offset information, and at least one of the following calculation formulas is used:

[0132]

[0133] as well as

[0134]

[0135] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0136] In one embodiment, the method further includes: in response to determining that the sounding reference signal overlaps with the time-frequency domain resources for transmitting other sounding reference signals, sending a change indication to the terminal;

[0137] The change indication is used to instruct the terminal sending the sounding reference signal to change the comb value offset of the sounding reference signal, or to change the cyclic shift value of the sounding reference signal; and / or

[0138] The change indication is used to instruct the terminal sending the other sounding reference signal to change the comb value offset of the other sounding reference signal, or to change the cyclic shift value of the other sounding reference signal.

[0139] According to a third aspect of an embodiment of the present disclosure, a device for transmitting a sounding reference signal is provided, the device comprising:

[0140] a determining unit, configured to determine offset information based on a pseudo-random sequence function, where the offset information is used to perform random processing on the SRS signal transmitted by the terminal, where the pseudo-random sequence function is determined based on identification information, where the identification information includes a cell identifier of a cell where the terminal is located and / or a sending / receiving point identifier corresponding to the terminal;

[0141] The communication unit is configured to transmit an SRS signal based on the offset information.

[0142] In one implementation, the pseudo-random sequence function is determined based at least on a random sequence initialization function and a maximum offset value, where the maximum offset value includes a comb value of an SRS sequence and / or a maximum number of maximum cyclic shifts;

[0143] The random sequence initialization function is determined based on the identification information, or based on an SRS resource configuration parameter and the identification information.

[0144] In one implementation, the random sequence initialization function satisfies the following formula:

[0145] C init (N ID )=N ID ;or

[0146]

[0147] Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a radio frame.

[0148] In one implementation, the SRS resource configuration parameter includes at least one of the following:

[0149] The number of symbols occupied by the SRS sequence in the time slot;

[0150] The number of time slots occupied by the SRS sequence in a radio frame;

[0151] The starting position of the SRS sequence transmission in a time slot;

[0152] An integer value determined based on the maximum value of the offset.

[0153] In one implementation, the offset information includes offset information in an SRS comb transmission, and the offset information in the SRS comb transmission is used to determine a frequency domain starting position of an SRS sequence corresponding to each SRS port after being offset in an SRS comb transmission;

[0154] The maximum offset value is the comb value of the SRS sequence;

[0155] The pseudo-random sequence function satisfies the following formula:

[0156]

[0157] in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0158] In one implementation, the value of Y is determined by the linear sum of one or more of the following: 0;

[0160]

[0161] The time slot t in which the SRS is transmitted;

[0162] SRS Sequence ID

[0163] N ID ;

[0164] k′∈{0,1,...,K TC -1};

[0165] Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0166] In one implementation, determining the offset information based on the pseudo-random sequence function includes:

[0167] Based on the first pseudo-random sequence function, the comb transmission offset parameter of the SRS sequence is randomized to obtain the offset information within the SRS comb transmission.

[0168] In one embodiment, the comb transmission offset parameter of the SRS sequence includes an offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value

[0169] The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods:

[0170] Based on the first pseudo-random sequence function, and stated Performing overall randomization to obtain offset information within the SRS comb transmission; and

[0171] Based on the first pseudo-random sequence function, After randomization, Get the offset information within the SRS comb transmission.

[0172] In one embodiment, the first pseudo-random sequence function is used to and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows:

[0173]

[0174] in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0175] In one implementation, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0176]

[0177] in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0178] In one implementation, the transmitting of the SRS signal based on the offset information includes:

[0179] Determine the frequency domain position occupied by the SRS based on the offset information in the SRS comb transmission, the starting position within the specified bandwidth size during partial frequency domain transmission, and the starting position of each hop;

[0180] The SRS is transmitted at a determined frequency domain position.

[0181] In one implementation, the offset information includes cyclic shift offset information;

[0182] The maximum value of the offset is the maximum number of maximum cyclic shifts;

[0183] The pseudo-random sequence function satisfies the following formula:

[0184]

[0185] in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, which is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0186] In one embodiment, the value of Y' is determined by the linear sum of one or more of the following: 0;

[0188]

[0189] The time slot t in which the SRS is transmitted;

[0190] SRS Sequence ID

[0191] N ID ;

[0192] k′∈{0,1,...,K TC -1};

[0193] t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and

[0194] A different SRS port index or a different port index minus a third reference value n ref .

[0195] In one implementation, determining the offset information based on the pseudo-random sequence function includes:

[0196] Based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly offset to obtain cyclic shift offset information.

[0197] In one implementation, based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly offset to obtain a calculation formula for cyclic shift offset information, using at least one of the following:

[0198]

[0199] as well as

[0200]

[0201] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0202] In one implementation, the transmitting of the SRS signal based on the offset information includes:

[0203] Generate an SRS random sequence based on the cyclic shift offset information;

[0204] The SRS random sequence is transmitted.

[0205] In one embodiment, the method further comprises:

[0206] In response to receiving a change indication sent by a network device, changing the comb value offset of the sounding reference signal; or

[0207] In response to receiving a change indication sent by a network device, changing a cyclic shift value of the sounding reference signal;

[0208] The change indication is sent by the network device to the terminal when the time-frequency domain resources for transmitting the sounding reference signal overlap with those for transmitting other sounding reference signals.

[0209] According to a fourth aspect of an embodiment of the present disclosure, a device for transmitting a sounding reference signal is provided, the device comprising:

[0210] a sending unit configured to send identification information to a terminal, so that the terminal determines a pseudo-random sequence function based on the identification information, and determines offset information based on the pseudo-random sequence function, wherein the identification information includes a cell identifier of a cell where the terminal is located and / or a sending / receiving point identifier corresponding to the terminal;

[0211] The receiving unit is configured to receive an SRS signal determined and transmitted by the terminal based on the offset information.

[0212] In one implementation, the sending unit is further configured to:

[0213] Sending SRS resource configuration parameters to the terminal so that the terminal determines a random sequence initialization function based on the identification information or the SRS resource configuration parameters and the identification information, and determines the pseudo-random sequence function based at least on the random sequence initialization function and the maximum offset value, wherein the maximum offset value includes the comb value of the SRS sequence and / or the maximum number of maximum cyclic shifts.

[0214] In one implementation, the random sequence initialization function satisfies the following formula:

[0215] C init (N ID )=N ID ;or

[0216]

[0217] Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots occupied by the SRS sequence in the radio frame.

[0218] In one implementation, the SRS resource configuration parameter includes at least one of the following:

[0219] The number of symbols occupied by the SRS sequence in the time slot;

[0220] The number of time slots occupied by the SRS sequence in the radio frame;

[0221] The starting position of the SRS sequence transmission in a time slot;

[0222] An integer value determined based on the maximum value of the offset.

[0223] In one implementation, the offset information includes offset information in an SRS comb transmission, and the offset information in the SRS comb transmission is used to determine a frequency domain starting position of an SRS sequence corresponding to each SRS port after being offset in an SRS comb transmission;

[0224] The maximum offset value is the comb value of the SRS sequence;

[0225] The pseudo-random sequence function satisfies the following formula:

[0226]

[0227] in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0228] In one implementation, the value of Y is determined by the linear sum of one or more of the following: 0;

[0230]

[0231] The time slot t in which the SRS is transmitted;

[0232] SRS Sequence ID

[0233] N ID ;

[0234] k′∈{0,1,...,K TC -1};

[0235] Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0236] In one implementation, the determining of the offset information based on the pseudo-random sequence function includes:

[0237] Based on the first pseudo-random sequence function, randomizing the comb transmission offset parameter of the SRS sequence to obtain offset information within the SRS comb transmission;

[0238] The comb transmission offset parameter of the SRS sequence includes the offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value

[0239] The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods:

[0240] Based on the first pseudo-random sequence function, and stated Performing overall randomization to obtain offset information within the SRS comb transmission; and

[0241] Based on the first pseudo-random sequence function, After randomization, Get the offset information within the SRS comb transmission.

[0242] In one implementation, based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows:

[0243]

[0244] in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0245] In one implementation, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0246]

[0247] in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0248] In one implementation, the offset information includes cyclic shift offset information;

[0249] The maximum value of the offset is the maximum number of maximum cyclic shifts;

[0250] The pseudo-random sequence function satisfies the following formula:

[0251]

[0252] in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, which is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0253] In one embodiment, the value of Y' is determined by the linear sum of one or more of the following: 0;

[0255]

[0256] The time slot t in which the SRS is transmitted;

[0257] SRS Sequence ID

[0258] N ID ;

[0259] k′∈{0,1,...,K TC -1};

[0260] t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and

[0261] A different SRS port index or a different port index minus a third reference value n ref .

[0262] In one implementation, the determining of the offset information based on the pseudo-random sequence function includes:

[0263] Based on the second pseudo-random sequence function, randomly shift the cyclic shift parameter of the SRS sequence to obtain cyclic shift offset information;

[0264] Among them, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS sequence is randomly offset to obtain the cyclic shift offset information, and at least one of the following calculation formulas is used:

[0265]

[0266] as well as

[0267]

[0268] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0269] In one embodiment, the method further includes: in response to determining that the sounding reference signal overlaps with the time-frequency domain resources for transmitting other sounding reference signals, sending a change indication to the terminal;

[0270] The change indication is used to instruct the terminal sending the sounding reference signal to change the comb value offset of the sounding reference signal, or to change the cyclic shift value of the sounding reference signal; and / or

[0271] The change indication is used to instruct the terminal sending the other sounding reference signal to change the comb value offset of the other sounding reference signal, or to change the cyclic shift value of the other sounding reference signal.

[0272] According to a fifth aspect of an embodiment of the present disclosure, a device for transmitting a sounding reference signal is provided, the device comprising:

[0273] processor;

[0274] a memory for storing processor-executable instructions;

[0275] The processor is configured to: execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0276] According to a sixth aspect of an embodiment of the present disclosure, a device for transmitting a sounding reference signal is provided, the device comprising:

[0277] processor;

[0278] a memory for storing processor-executable instructions;

[0279] The processor is configured to: execute the method described in any one of the second aspect or any one of the implementations of the second aspect.

[0280] According to a seventh aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute a method as described in the first aspect or any one of the embodiments of the first aspect.

[0281] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute a method as described in the second aspect or any one of the embodiments of the second aspect.

[0282] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by determining a pseudo-random sequence function based on identification information including a cell identifier of a cell where a terminal is located and / or an identification of a transmitting and receiving point corresponding to the terminal, and performing random processing on an SRS signal transmitted by the terminal based on offset information determined by the pseudo-random sequence function, interference caused by the offset of an edge user's SRS being the same as the offset of a center user's SRS can be avoided, thereby improving the estimation performance of the uplink channel.

[0283] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0284] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0285] Figure 1 The invention is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0286] Figure 2 The figure is a flow chart showing a method for transmitting a sounding reference signal SRS according to an exemplary embodiment.

[0287] Figure 3 The present invention is a flowchart of a method for determining offset information based on a first pseudo-random sequence function when the offset information includes offset information in an SRS comb transmission according to an exemplary embodiment.

[0288] Figure 4 The present invention is a flowchart of a method for determining offset information based on a pseudo-random sequence function when the offset information includes cyclic shift offset information according to an exemplary embodiment.

[0289] Figure 5 The figure is a schematic diagram of a specific application of a method for transmitting a sounding reference signal according to an exemplary embodiment.

[0290] Figure 6 The figure is a flow chart showing a method for transmitting a sounding reference signal SRS according to an exemplary embodiment.

[0291] Figure 7 The invention is a block diagram of a transmission device of a sounding reference signal SRS according to an exemplary embodiment.

[0292] Figure 8 The invention is a block diagram of a transmission device of a sounding reference signal SRS according to an exemplary embodiment.

[0293] Fig. 9 It is a block diagram of a device according to an exemplary embodiment.

[0294] Fig.10 It is a block diagram of a device according to an exemplary embodiment. DETAILED DESCRIPTION

[0295] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

[0296] The method for transmitting a sounding reference signal according to the embodiment of the present disclosure can be applied to Figure 1 In the wireless communication system shown in FIG. Figure 1 As shown, the wireless communication system includes a network device and a terminal. The terminal is connected to the network device via wireless resources and performs data transmission.

[0297] Understandably, Figure 1 The wireless communication system shown is only for schematic illustration. The wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices. Figure 1 The embodiment of the present disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0298] It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access / collision avoidance (Carrier Sense Multiple Access with Collision Avoidance). According to the capacity, rate, delay and other factors of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, 5G network can also be called new radio network (New Radio, NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as a network.

[0299] Further, the network equipment involved in the present disclosure may also be referred to as a wireless access network device. The wireless access network device may be: a base station, an evolved node B (base station), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It may also be a gNB in ​​an NR system, or it may also be a component or a part of a base station. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited. In the present disclosure, the network device can provide communication coverage for a specific geographical area and can communicate with a terminal located in the coverage area (cell). In addition, when it is a vehicle-to-vehicle (V2X) communication system, the network device may also be a vehicle-mounted device.

[0300] Furthermore, the terminal involved in the present disclosure may also be referred to as a terminal device, a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal, MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: a smart phone (Mobile Phone), a customer premises equipment (Customer Premise Equipment, CPE), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0301] In the related art, when a network device (such as a base station) has multiple TRPs, it can use M-TRP / multi-panel to provide services to the terminal, and introduce CoMP technology to enable the network device to provide a more balanced service quality within the service area.

[0302] Different from single-point transmission such as a single TRP or panel (Pannel), multi-point collaborative transmission refers to multiple TRPs (Multi-TRP, mTRP) / panels providing data services to one user. Among them, the antenna array of each TRP can be divided into several relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adjusted according to the deployment scenario and business needs. The antenna panels or TRPs can also be connected by optical fiber for more flexible distributed deployment. In the millimeter wave band, as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will be more significant. In this case, from the perspective of ensuring the robustness of the link connection, the collaboration between multiple TRPs or panels can be used to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0303] According to the mapping relationship between the transmitted signal stream and multiple TRP / panels, multi-point cooperative transmission technology can be divided into two types: coherent transmission (Coherent Joint Transmission, CJT) and non-coherent transmission (Non-Coherent Joint Transmission, NCJT). In coherent transmission, each data stream is mapped to multiple TRP / panels participating in the collaboration through a weighted vector. In non-coherent transmission, each data stream is only mapped to part of the TRP / panel. Coherent transmission is equivalent to splicing multiple sub-arrays into a higher-dimensional virtual array to obtain higher shaping or precoding gain.

[0304] When CJT transmission is used in a TDD system, the coordinated multiple TRPs (mTRPs) need to obtain accurate uplink channel information of edge users. The uplink channel from the current user to the mTRP can be estimated by the UE sending SRS to each TRP. The generation formula of the SRS sequence is:

[0305]

[0306] Among them, p i is the antenna port index corresponding to the i-th SRS port, n is the length of the SRS sequence The index in is the length of the SRS sequence, l' is the total number of SRS symbols. The index in is the total number of SRS symbols, is the SRS sequence generation formula, u is the number of the SRS sequence group, v is the base sequence of v = 0 or v = 1 in each sequence group, α i For p i The cyclic phase deviation value of each port is δ = log2(K TC ), K TC is the comb value, K TC ∈{2,4,8}.

[0307] The above p i The cyclic phase deviation value α of each port i It can be expressed as:

[0308]

[0309] in, Circular shift offset information, The maximum number of cyclic shifts configured for the network device.

[0310]

[0311] The cyclic shift value configured for the network device, is the number of ports of SRS resources, and mod is the remainder function.

[0312] Maximum number of cyclic shifts It can be the comb value K TC The corresponding relationship between the two is shown in Table 1 below:

[0313] Table 1: With K TC The corresponding relationship

[0314]

[0315]

[0316] The transmission position of the generated SRS sequence in the frequency domain can be expressed as:

[0317]

[0318] in,

[0319]

[0320] The antenna port index is p i The frequency domain starting position of the SRS sequence sent by the corresponding SRS port, is the offset in the SRS comb transmission, which is used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after the offset in an SRS comb transmission. Indicates the starting position of each jump, Indicates partial frequency transmission in bandwidth m SRS,b The starting position within m SRS,b is the SRS transmission bandwidth when SRS is not frequency hopping, or the bandwidth of each hop when SRS is frequency hopping, b is the parameter value configured by the network device to determine whether to hop frequency, or the parameter value configured when SRS is frequency hopping transmission, is the offset position of the relative reference point configured by the network device, and n shift is the number of subcarriers contained in one RB, is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the offset value of the SRS sequence at different symbols within a comb value, It is the offset value of the positioned SRS resource at different symbols in a comb transmission.

[0321] It can be determined by the following formula:

[0322]

[0323] in, is the comb value offset value, The port number of the SRS resource, which is configured by the network device to the terminal.

[0324] The time domain position of the generated SRS sequence transmitted in a time slot can be expressed as:

[0325]

[0326] Among them, l0 is the starting position of the SRS symbol in a time slot, is the number of SRS symbols in a time slot, l offset is the offset value of the SRS symbol in a time slot, l offset ∈{0,1,...,13}, is configured to the terminal by the network device through Radio Resource Control (RRC) signaling.

[0327] Since the SRS transmission of edge cell users is often interfered by the SRS transmission of the center user of the adjacent cell, the uplink channel estimation performance is deteriorated. In order to randomize the SRS interference of the adjacent cells, the comb value offset frequency hopping scheme and the cyclic shift frequency hopping scheme are proposed in the related art. In the comb value offset frequency hopping scheme, the calculation The formula is modified to:

[0328]

[0329] in, is a random sequence, which is a function of l'. In the cyclic shift hopping scheme, α is calculated i The formula is modified to:

[0330]

[0331] in, or

[0332]

[0333] in, K is a positive integer.

[0334] In this way, the frequency domain transmission position or cyclic shift value of the SRS transmitted by the terminal can be randomized, thereby reducing the interference of the SRS transmission of the central user on the SRS transmission of the edge user. However, when the above method performs randomization, the random sequence is generated based on l', resulting in that the offset of the SRS of the edge user may be the same as the offset of the SRS of the central user. At this time, the SRS transmission of the central user will still interfere with the SRS transmission of the edge user.

[0335] In view of this, an embodiment of the present disclosure provides a method for transmitting a sounding reference signal SRS, in which a terminal determines identification information based on a cell identifier of a cell where the terminal is located and / or a transmitting and receiving point identifier corresponding to the terminal, determines a pseudo-random sequence function based on the identification information, determines offset information of the SRS based on the pseudo-random sequence function, and transmits the SRS based on the offset information, so that the frequency domain transmission position or cyclic shift value of the SRS of an edge cell user has a different offset from the frequency domain transmission position or cyclic shift value of the SRS of a center user of an adjacent cell, thereby reducing the interference of the SRS transmission of the center user on the SRS transmission of the edge UE.

[0336] Figure 2 is a flowchart of a method for transmitting a sounding reference signal SRS according to an exemplary embodiment, wherein the method for transmitting a sounding reference signal SRS is executed by a terminal, such as Figure 2 As shown, the following steps are included.

[0337] In step S21, offset information is determined based on a pseudo-random sequence function.

[0338] The offset information is used to randomize interference with the SRS signal transmitted by the terminal. The pseudo-random sequence function is determined based on the identification information. In some embodiments, the pseudo-random sequence function can also be determined by other information, such as the time slot where the SRS transmission is located. The identification information includes the cell identifier of the cell where the terminal is located and / or the sending and receiving point identifier corresponding to the terminal.

[0339] In step S22, the SRS signal is transmitted based on the offset information.

[0340] In the embodiment of the present disclosure, the identification information may be sent by a network device to a terminal, and the identification information may include a cell identifier of a cell where the terminal is located, an identifier of a sending / receiving point corresponding to the terminal, or a combination of the two.

[0341] In the disclosed embodiment, the offset information may be used to randomize the SRS signal transmitted by the terminal to obtain the frequency domain transmission position or cyclic shift value of the randomized SRS transmitted by the terminal, thereby achieving interference randomization between SRS transmitted by different terminals in adjacent cells.

[0342] According to the technical solution of the embodiment of the present disclosure, by determining a pseudo-random sequence function based on identification information including a cell identifier of a cell where a terminal is located and / or an identification of a sending and receiving point corresponding to the terminal, and performing random processing on an SRS signal transmitted by the terminal based on offset information determined by the pseudo-random sequence function, interference caused by the offset of an edge user's SRS being the same as the offset of a center user's SRS can be avoided, thereby improving the estimation performance of the uplink channel.

[0343] In the disclosed embodiment, the pseudo-random sequence function is at least based on the random sequence initialization function C init (N ID ) and the maximum offset value. Among them, the random sequence initialization function C init (N ID ) is determined based on the identification information, or based on the SRS resource configuration parameters and the identification information, the random sequence initialization function C init () satisfies the following formula:

[0344] C init (N ID )=N ID (11)

[0345] Among them, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the transmitting and receiving point corresponding to the terminal; or, the random sequence initialization function C init (N ID ) satisfies the following formula:

[0346]

[0347] in, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame. It can be understood that in practical applications, C init (N ID ) can also be determined by other methods under the conditions based on identification information, which will not be repeated here.

[0348] In the embodiment of the present disclosure, when the random sequence initialization function is determined based on the SRS resource configuration parameter and the identification information, the SRS resource configuration parameter may be sent by the network device to the terminal. The SRS resource configuration parameter may include at least one of the following:

[0349] The number of symbols occupied by the SRS sequence in the time slot;

[0350] The number of time slots occupied by the SRS sequence in a radio frame;

[0351] The starting position of the SRS sequence transmission in a time slot;

[0352] An integer value determined based on the maximum value of the offset.

[0353] In the embodiment of the present disclosure, the offset information may include the offset information in the SRS comb transmission, and the offset information in the SRS comb transmission may be used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after the offset in an SRS comb transmission. At this time, the maximum offset value is the comb value of the SRS resource, and the pseudo-random sequence function satisfies the following formula:

[0354]

[0355] in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ), X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0356] In the method for transmitting a sounding reference signal provided by the embodiment of the present disclosure, the first pseudo-random sequence function Determined according to the Gold sequence generation function c(). The initialization value of the Gold sequence generation function c() is the random sequence initialization function C init (N ID ), the random sequence initialization function C init (N ID ) According to the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal N ID In this way, the first pseudo-random sequence function is obtained For different N ID The first pseudo-random sequence function for randomizing the transmission comb value offset of the SRS can be obtained by distinguishing the transmission comb value offset of the SRS by the terminals of different cells. Different, thereby avoiding interference between SRSs transmitted by terminals in different cells.

[0357] In the embodiment of the present disclosure, the first reference value Y may be determined by the linear sum of one or more of the following: 0;

[0359] The total number of SRS symbols is The index l' in

[0360] The time slot t in which the SRS is transmitted;

[0361] SRS Sequence ID

[0362] N ID ;

[0363] An index k' within a transmitted value, k'∈{0,1,...,K TC -1};

[0364] Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0365] Figure 3 is a flowchart of a method for determining offset information based on a first pseudo-random sequence function when the offset information includes offset information in an SRS comb transmission according to an exemplary embodiment, such as Figure 3 As shown, when the offset information includes the offset information in the SRS comb transmission, the method for determining the offset information based on the first pseudo-random sequence function includes the following steps.

[0366] In step S31, based on a first pseudo-random sequence function, a comb transmission offset parameter of an SRS sequence is randomized to obtain offset information within the SRS comb transmission.

[0367] In the embodiment of the present disclosure, when the offset information includes the offset information in the SRS comb transmission, the pseudo-random sequence function may be the first pseudo-random sequence function described above. The first pseudo-random sequence function The comb transmission offset parameter acting on the SRS sequence is based on the first pseudo-random sequence function By performing random processing on the comb transmission offset parameters of the SRS sequence, offset information within the SRS comb transmission can be obtained.

[0368] In the embodiment of the present disclosure, the comb transmission offset parameter of the SRS sequence may include an offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value At this time, in one example, the above-mentioned first pseudo-random sequence function The randomization of the comb transmission offset parameters of the SRS sequence can be implemented in the following manner: based on the first pseudo-random sequence function right The whole is randomized to obtain the offset information in the SRS comb transmission. In another example, the above-mentioned first pseudo-random sequence function The randomization of the comb transmission offset parameters of the SRS sequence can be implemented in the following manner: based on the first pseudo-random sequence function right After randomization, Obtain the offset information in the SRS comb transmission. In another example, the above-mentioned first pseudo-random sequence function The randomization of the comb transmission offset parameters of the SRS sequence may be achieved by combining the above two methods.

[0369] In the embodiment of the present disclosure, based on the first pseudo-random sequence function right The overall randomization process can be based on the first pseudo-random sequence function The offset information in the SRS comb transmission is jointly determined, and the specific calculation formula can be:

[0370]

[0371] in, is the offset in the SRS comb transmission, that is, the frequency domain starting position of the SRS sequence corresponding to each SRS port after randomization after the offset in an SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0372] According to the technical solution of the embodiment of the present disclosure, by using a first pseudo-random sequence function By performing random processing on the offset in the SRS comb transmission as a whole, the SRSs of different terminals can have different frequency domain transmission positions, thereby improving the estimation performance of the uplink channel.

[0373] In the embodiment of the present disclosure, based on the first pseudo-random sequence function right After randomization, The offset information in the SRS comb transmission can be obtained by firstly based on the formula

[0374]

[0375] Determine the randomization in, After randomization That is, the offset value of the SRS sequence corresponding to the i-th SRS port after randomization within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device. Alternative Substituting into the above formula (5), we can obtain the offset in the SRS comb transmission, that is, the frequency domain starting position of the SRS sequence corresponding to each SRS port after randomization after the offset in an SRS comb transmission. for:

[0376]

[0377] According to the technical solution of the embodiment of the present disclosure, by firstly based on the first pseudo-random sequence function Randomization was performed to obtain Then based on Determining the offset within the SRS comb transmission can also enable the SRSs of different terminals to have different frequency domain transmission positions, thereby improving the estimation performance of the uplink channel.

[0378] In the embodiment of the present disclosure, after determining the offset in the SRS comb transmission, the frequency domain position occupied by the SRS can be determined based on the offset information in the SRS comb transmission, the starting position in the specified bandwidth size during partial frequency domain transmission, and the starting position of each hop. After that, the terminal can transmit the SRS at the determined frequency domain position. In one example, the frequency domain position occupied by the SRS can be determined by the above formula (4), where the parameter offset in the SRS comb transmission is After randomization, the Alternative.

[0379] According to the technical solution of the embodiment of the present disclosure, by The randomization process is performed so that the SRSs of different terminals have different frequency domain transmission positions, thereby improving the transmission accuracy of the SRS sequence and the estimation capability of the uplink channel.

[0380] In the embodiment of the present disclosure, the offset information may also include cyclic shift offset information, which may be used to determine the cyclic shift value of the SRS. At this time, the maximum offset value is the maximum number of maximum cyclic shifts, and the pseudo-random sequence function satisfies the following formula:

[0381]

[0382] in, is the second pseudo-random sequence function, c() Gold sequence generation function, whose initialization value is the random sequence initialization function C init (N ID ), X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, and its value is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0383] In the method for transmitting a sounding reference signal provided in the embodiment of the present disclosure, the second pseudo-random sequence function Determined according to the Gold sequence generation function c(). The initialization value of the Gold sequence generation function c() is the random sequence initialization function C init (N ID ), the random sequence initialization function C init (N ID ) According to the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal N ID In this way, the second pseudo-random sequence function is obtained For different N ID The distinction is made so that when terminals in different cells determine the cyclic shift value of the SRS, they can obtain a second pseudo-random sequence function for randomizing the cyclic shift value. Different, thereby avoiding interference between SRSs transmitted by terminals in different cells.

[0384] In the embodiment of the present disclosure, the second reference value Y' can be determined by the linear sum of one or more of the following: 0;

[0386] The total number of SRS symbols is The index l' in

[0387] The time slot t in which the SRS is transmitted;

[0388] SRS Sequence

[0389] N ID ;

[0390] An index k' within a transmitted value, k'∈{0,1,...,K TC -1};

[0391] Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and

[0392] A different SRS port index or a different port index minus a third reference value n ref .

[0393] Figure 4 is a flowchart of a method for determining offset information based on a pseudo-random sequence function when the offset information includes cyclic shift offset information according to an exemplary embodiment, such as Figure 4 As shown, when the offset information includes cyclic shift offset information, the method for determining the offset information based on the pseudo-random sequence function includes the following steps.

[0394] In step S41, based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly shifted to obtain cyclic shift offset information.

[0395] In the embodiment of the present disclosure, when the offset information includes cyclic shift offset information, the pseudo-random sequence function may be the aforementioned second pseudo-random sequence function The second pseudo-random sequence function The cyclic shift parameter acting on the SRS resource is based on the second pseudo-random sequence function By performing random processing on the cyclic shift parameter of the SRS resource, the cyclic shift offset information of the SRS can be obtained.

[0396] In the embodiment of the present disclosure, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS resource is randomly offset to obtain the cyclic shift offset information, which can be implemented in the following manner: Based on the formula

[0397]

[0398]

[0399] or formula

[0400]

[0401] Determine the cyclic shift offset information, where: is the cyclic shift offset information, that is, the cyclic shift value after randomization. is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0402] According to the technical solution of the embodiment of the present disclosure, by using a second pseudo-random sequence function Determining the cyclic shift offset information, that is, the cyclic shift value after randomization, can make the SRS of different terminals have different cyclic shift values, thereby improving the estimation performance of the uplink channel.

[0403] In the embodiment of the present disclosure, after the cyclic shift offset information is determined, an SRS sequence can be generated based on the cyclic shift offset information, and the SRS sequence can be transmitted by the terminal. In one example, the SRS random sequence can be generated by the aforementioned formula (1), wherein in the calculation parameter α i When The randomized cyclic shift offset information can be used Alternative.

[0404] According to the technical solution of the embodiment of the present disclosure, by That is, the cyclic shift value is randomized so that the SRS of different terminals have different cyclic shift values, thereby improving the estimation performance of the uplink channel.

[0405] In the embodiments of the present disclosure, the offset information is taken as the offset information in the SRS comb transmission as an example to illustrate the process of two terminals transmitting the SRS.

[0406] Assume that terminal UE1 is an edge user in cell 1, terminal UE2 is a central user in cell 2, and cell 1 and cell 2 are adjacent cells. The network equipment in the cell, such as the base station, configures cell IDs 5 and 6 for UE1 and UE2 respectively, that is, N ID,1 =5,N ID,2=6. The base station configures two port periodic SRS resources for UE1 and UE2, namely SRS resource 1 and SRS resource 2, with a period of T = 5ms. The comb value of the SRS resources is configured as 4. The number of OFDM symbols is 1, and the numerical offset values ​​of the two resources are configured within a comb transmission range. Since the configured SRS is not used for positioning, Thus, the first pseudo-random sequence functions of UE1 and UE2 can be calculated respectively:

[0407]

[0408] Determine the random sequence initialization function C of UE1 init (N ID )=5, random sequence initialization function C of UE2 init (N ID )=6, t is the time slot where SRS is transmitted, and the value of Y is It can be concluded that Figure 5 As shown, when the comb value is 4 in a resource block, the SRS sequence generated according to formula (20) is the offset of the SRS transmitted by UE1 and UE2 in a comb transmission in different periods.

[0409] In the embodiments of the present disclosure, the offset information is taken as cyclic shift offset information as an example to illustrate the process of two terminals transmitting SRS.

[0410] Assume that terminal UE1 is an edge user in cell 1, terminal UE2 is a central user in cell 2, and cell 1 and cell 2 are adjacent cells. The network equipment in the cell, such as the base station, configures cell IDs 5 and 6 for UE1 and UE2 respectively, that is, N ID,1 =5,N ID,2 =6. The base station configures two port periodic SRS resources for UE1 and UE2, namely SRS resource 1 and SRS resource 2, with a period of T = 5ms. The comb value of the SRS resources is configured as 4. The number of OFDM symbols is 4, and the numerical offset values ​​of the two resources are configured within a comb transmission range The cyclic shift value corresponding to each port of SRS resource 1 or SRS resource 2 is:

[0411]

[0412] in,

[0413]

[0414] Determine the random sequence initialization function C of UE1 init (NID )=5, random sequence initialization function C of UE2 init (N ID )=6, t is the time slot where SRS is transmitted, and the value of Y' is For SRS resources in different cells, although the transmission positions of SRS in the time and frequency domain are the same, the random sequences generated at different symbol positions in different time slots according to the above formula are also different, so that the interference between SRS transmissions of different cells is randomized.

[0415] It should be noted that those skilled in the art can understand that the various implementation methods / embodiments involved in the embodiments of the present disclosure can be used in conjunction with the aforementioned embodiments or can be used independently. Whether used alone or in conjunction with the aforementioned embodiments, the implementation principle is similar. In the implementation of the present disclosure, some embodiments are described in terms of implementation methods used together. Of course, those skilled in the art can understand that such examples are not limitations of the embodiments of the present disclosure.

[0416] Figure 6 is a flowchart of a method for transmitting a sounding reference signal SRS according to an exemplary embodiment, wherein the method for transmitting a sounding reference signal SRS is executed by a network device, such as Figure 6 As shown, the following steps are included.

[0417] In step S61, identification information is sent to the terminal, so that the terminal determines a pseudo-random sequence function based on the identification information, and determines offset information based on the pseudo-random sequence function.

[0418] The identification information includes a cell identification of a cell where the terminal is located and / or a sending / receiving point identification corresponding to the terminal.

[0419] In step S62, the receiving terminal determines and transmits an SRS signal based on the offset information.

[0420] In an embodiment of the present disclosure, the method also includes: sending SRS resource configuration parameters to the terminal, so that the terminal determines a random sequence initialization function based on the identification information or the SRS resource configuration parameters and the identification information, and determines the pseudo-random sequence function based at least on the random sequence initialization function and the maximum offset value.

[0421] In the embodiment of the present disclosure, the random sequence initialization function satisfies the following formula: init (N ID )=N ID ;or Among them, C init (N ID ) is the random sequence initialization function, NID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots occupied by the SRS sequence in the radio frame.

[0422] In the disclosed embodiment, the SRS resource configuration parameter includes at least one of the following: the number of symbols occupied by the SRS sequence in a time slot; the number of time slots occupied by the SRS sequence in a wireless frame; the starting position of the SRS sequence transmission in a time slot; an integer value determined based on the maximum offset value.

[0423] In the embodiment of the present disclosure, the offset information includes offset information in the SRS comb transmission, and the offset information in the SRS comb transmission is used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after the offset in an SRS comb transmission; the maximum offset value is the comb value of the SRS sequence; and the pseudo-random sequence function satisfies the following formula: in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0424] In the embodiment of the present disclosure, the value of Y is determined by the linear sum of one or more of the following: 0; The time slot t where the SRS is transmitted; SRS sequence ID N ID ; k'∈{0,1,...,K TC -1}; Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0425] In the embodiment of the present disclosure, the offset information is determined based on the pseudo-random sequence function, including: based on the first pseudo-random sequence function, randomizing the comb transmission offset parameter of the SRS sequence to obtain the offset information within the SRS comb transmission; wherein the comb transmission offset parameter of the SRS sequence includes the offset value of the SRS sequence corresponding to the SRS port within a comb value The offset value of the SRS sequence at different symbols within a comb value The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods: randomizing the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function and stated The whole is randomized to obtain the offset information in the SRS comb transmission; and based on the first pseudo-random sequence function, the After randomization, Get the offset information within the SRS comb transmission.

[0426] In the embodiment of the present disclosure, based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows:

[0427] in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0428] In the embodiment of the present disclosure, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0429]

[0430] in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0431] In the disclosed embodiment, the offset information includes cyclic shift offset information; the maximum offset value is the maximum number of maximum cyclic shifts; the pseudo-random sequence function satisfies the following formula: in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, and its value is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, where group hopping refers to randomly selecting a group of SRS sequences generated from an SRS base sequence containing multiple groups. In one example, X can be 8; is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0432] In the embodiment of the present disclosure, the value of Y' is determined by the linear sum of one or more of the following: 0; The time slot t where the SRS is transmitted; SRS sequence ID N ID ; k'∈{0,1,...,K TC -1}; t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the rounding down of X; and a different SRS port index or a different port index minus a third reference value n ref .

[0433] In the embodiment of the present disclosure, the determining the offset information based on the pseudo-random sequence function includes: based on the second pseudo-random sequence function, randomly shifting the cyclic shift parameter of the SRS sequence to obtain the cyclic shift offset information; wherein, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS sequence is randomly shifted to obtain the cyclic shift offset information. The calculation formula is at least one of the following:

[0434]

[0435] as well as

[0436]

[0437] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0438] In an embodiment of the present disclosure, the method also includes: in response to determining that the time-frequency domain resources for transmitting the detection reference signal overlap with those of other detection reference signals, sending a change indication to the terminal; wherein the change indication is used to instruct the terminal sending the detection reference signal to change the comb value offset of the detection reference signal, or to change the cyclic shift value of the detection reference signal; and / or the change indication is used to instruct the terminal sending the other detection reference signals to change the comb value offset of the other detection reference signals, or to change the cyclic shift value of the other detection reference signals.

[0439] According to the technical solution of the embodiment of the present disclosure, by determining a pseudo-random sequence function based on identification information including a cell identifier of a cell where a terminal is located and / or an identification of a sending and receiving point corresponding to the terminal, and performing random processing on an SRS signal transmitted by the terminal based on offset information determined by the pseudo-random sequence function, interference caused by the offset of an edge user's SRS being the same as the offset of a center user's SRS can be avoided, thereby improving the estimation performance of the uplink channel.

[0440] Based on the same concept, an embodiment of the present disclosure also provides a transmission device for a sounding reference signal SRS.

[0441] It is understandable that in order to achieve the above functions, the transmission device of the sounding reference signal SRS provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function. In combination with the units and algorithm steps of the various examples disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0442] Figure 7 FIG. 1 is a block diagram of a transmission device for a sounding reference signal SRS according to an exemplary embodiment. Figure 7 , the device 700 includes a determining unit 701 and a communication unit 702.

[0443] The determination unit 701 is configured to determine offset information based on a pseudo-random sequence function, the offset information being used to perform random processing on the SRS signal transmitted by the terminal, the pseudo-random sequence function being determined based on identification information, the identification information including a cell identification of a cell where the terminal is located and / or a transmitting and receiving point identification corresponding to the terminal.

[0444] The communication unit 702 is configured to transmit an SRS signal based on the offset information.

[0445] In an embodiment of the present disclosure, the pseudo-random sequence function is determined at least based on a random sequence initialization function and a maximum offset value, wherein the maximum offset value includes a comb value of an SRS sequence and / or a maximum number of maximum cyclic shifts, and the random sequence initialization function is determined based on the identification information, or based on an SRS resource configuration parameter and the identification information.

[0446] In the embodiment of the present disclosure, the random sequence initialization function satisfies the following formula: init (N ID )=N ID ;or Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a radio frame.

[0447] In the embodiment of the present disclosure, the SRS resource configuration parameter includes at least one of the following: the number of symbols occupied by the SRS sequence in a time slot; the number of time slots occupied by the SRS sequence in a wireless frame; the starting position of the SRS sequence transmission in a time slot; an integer value determined based on the maximum offset value.

[0448] In the embodiment of the present disclosure, the offset information includes offset information in the SRS comb transmission, and the offset information in the SRS comb transmission is used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after the offset in an SRS comb transmission; the maximum offset value is the comb value of the SRS sequence; and the pseudo-random sequence function satisfies the following formula: in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0449] In the embodiment of the present disclosure, the value of Y is determined by the linear sum of one or more of the following: 0; The time slot t where the SRS is transmitted; SRS sequence ID N ID ; k'∈{0,1,...,K TC -1}; Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0450] In the disclosed embodiment, the determining of the offset information based on the pseudo-random sequence function includes: randomizing the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function to obtain the offset information within the SRS comb transmission.

[0451] In the embodiment of the present disclosure, the comb transmission offset parameter of the SRS sequence includes an offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods: randomizing the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function and stated The whole is randomized to obtain the offset information in the SRS comb transmission; and based on the first pseudo-random sequence function, the After randomization, Get the offset information within the SRS comb transmission.

[0452] In the embodiment of the present disclosure, based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows: in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0453] In the embodiment of the present disclosure, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0454]

[0455] ,in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0456] In the disclosed embodiment, the transmission of the SRS signal based on the offset information includes: determining the frequency domain position occupied by the SRS based on the offset information in the SRS comb transmission, the starting position within the specified bandwidth size during partial frequency domain transmission, and the starting position of each hop; and transmitting the SRS at the determined frequency domain position.

[0457] In the disclosed embodiment, the offset information includes cyclic shift offset information; the maximum offset value is the maximum number of maximum cyclic shifts; the pseudo-random sequence function satisfies the following formula: in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, and its value is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, where group hopping refers to randomly selecting a group of SRS sequences generated from an SRS base sequence containing multiple groups. In one example, X can be 8; is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0458] In the embodiment of the present disclosure, the value of Y' is determined by the linear sum of one or more of the following: 0; The time slot t where the SRS is transmitted; SRS sequence ID N ID ; k'∈{0,1,...,K TC -1}; t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the rounding down of X; and a different SRS port index or a different port index minus a third reference value n re f.

[0459] In the disclosed embodiment, the determining the offset information based on the pseudo-random sequence function includes: based on the second pseudo-random sequence function, randomly shifting the cyclic shift parameter of the SRS sequence to obtain the cyclic shift offset information.

[0460] In the embodiment of the present disclosure, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS sequence is randomly offset to obtain the cyclic shift offset information using at least one of the following calculation formulas:

[0461]

[0462] as well as

[0463]

[0464] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0465] In the disclosed embodiment, the transmitting of the SRS signal based on the offset information includes: generating an SRS random sequence based on the cyclic shift offset information; and transmitting the SRS random sequence.

[0466] According to the technical solution of the embodiment of the present disclosure, by determining a pseudo-random sequence function based on identification information including a cell identifier of a cell where a terminal is located and / or an identification of a sending and receiving point corresponding to the terminal, and performing random processing on an SRS signal transmitted by the terminal based on offset information determined by the pseudo-random sequence function, interference caused by the offset of an edge user's SRS being the same as the offset of a center user's SRS can be avoided, thereby improving the estimation performance of the uplink channel.

[0467] In an embodiment of the present disclosure, the communication unit 702 is further configured to: in response to receiving a change indication sent by a network device, change the comb value offset of the detection reference signal; or in response to receiving a change indication sent by a network device, change the cyclic shift value of the detection reference signal; wherein the change indication is sent by the network device to the terminal when the time-frequency domain resources for transmitting the detection reference signal overlap with those of other detection reference signals.

[0468] Figure 8 FIG. 1 is a block diagram of a transmission device for a sounding reference signal SRS according to an exemplary embodiment. Figure 8 The device 800 includes a sending unit 801 and a receiving unit 802.

[0469] The sending unit 801 is configured to send identification information to the terminal, so that the terminal determines a pseudo-random sequence function based on the identification information, and determines offset information based on the pseudo-random sequence function, wherein the identification information includes a cell identifier of a cell where the terminal is located and / or a sending / receiving point identifier corresponding to the terminal;

[0470] The receiving unit 802 is configured to receive an SRS signal determined and transmitted by the terminal based on the offset information.

[0471] In an embodiment of the present disclosure, the sending unit is also configured to: send SRS resource configuration parameters to the terminal, so that the terminal determines a random sequence initialization function based on the identification information or the SRS resource configuration parameters and the identification information, and determines the pseudo-random sequence function based at least on the random sequence initialization function and the maximum offset value.

[0472] In the embodiment of the present disclosure, the random sequence initialization function satisfies the following formula: init (N ID )=N ID ;or Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots occupied by the SRS sequence in the radio frame.

[0473] In the disclosed embodiment, the SRS resource configuration parameter includes at least one of the following: the number of symbols occupied by the SRS sequence in a time slot; the number of time slots occupied by the SRS sequence in a wireless frame; the starting position of the SRS sequence transmission in a time slot; an integer value determined based on the maximum offset value.

[0474] In the embodiment of the present disclosure, the offset information includes offset information in the SRS comb transmission, and the offset information in the SRS comb transmission is used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after the offset in an SRS comb transmission; the maximum offset value is the comb value of the SRS sequence; and the pseudo-random sequence function satisfies the following formula: in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

[0475] In the embodiment of the present disclosure, the value of Y is determined by the linear sum of one or more of the following: 0; The time slot t where the SRS is transmitted; SRS sequence ID N ID ; k'∈{0,1,...,K TC -1}; Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

[0476] In the embodiment of the present disclosure, the offset information is determined based on the pseudo-random sequence function, including: based on the first pseudo-random sequence function, randomizing the comb transmission offset parameter of the SRS sequence to obtain the offset information within the SRS comb transmission; wherein the comb transmission offset parameter of the SRS sequence includes the offset value of the SRS sequence corresponding to the SRS port within a comb value The offset value of the SRS sequence at different symbols within a comb value The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods: randomizing the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function and stated The whole is randomized to obtain the offset information in the SRS comb transmission; and based on the first pseudo-random sequence function, the After randomization, Get the offset information within the SRS comb transmission.

[0477] In the embodiment of the present disclosure, based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows: in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p iis the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

[0478] In the embodiment of the present disclosure, based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows:

[0479]

[0480] in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

[0481] In the disclosed embodiment, the offset information includes cyclic shift offset information; the maximum offset value is the maximum number of maximum cyclic shifts; and the pseudo-random sequence function satisfies the following formula: in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, and its value is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, where group hopping refers to randomly selecting a group of SRS sequences generated from an SRS base sequence containing multiple groups. In one example, X can be 8; is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

[0482] In the embodiment of the present disclosure, the value of Y' is determined by the linear sum of one or more of the following: 0; The time slot t where the SRS is transmitted; SRS sequence ID N ID ; k'∈{0,1,...,K TC -1}; t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the rounding down of X; and a different SRS port index or a different port index minus a third reference value n re f.

[0483] In the embodiment of the present disclosure, the determining the offset information based on the pseudo-random sequence function includes: based on the second pseudo-random sequence function, randomly shifting the cyclic shift parameter of the SRS sequence to obtain the cyclic shift offset information; wherein, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS sequence is randomly shifted to obtain the cyclic shift offset information. The calculation formula is at least one of the following:

[0484]

[0485] as well as

[0486]

[0487] in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

[0488] In an embodiment of the present disclosure, the sending unit is further configured to: in response to determining that the time-frequency domain resources for transmitting the detection reference signal overlap with those for transmitting other detection reference signals, send a change indication to the terminal; wherein the change indication is used to instruct the terminal sending the detection reference signal to change the comb value offset of the detection reference signal, or to change the cyclic shift value of the detection reference signal; and / or the change indication is used to instruct the terminal sending the other detection reference signals to change the comb value offset of the other detection reference signals, or to change the cyclic shift value of the other detection reference signals.

[0489] According to the technical solution of the embodiment of the present disclosure, by determining a pseudo-random sequence function based on identification information including a cell identifier of a cell where a terminal is located and / or an identification of a sending and receiving point corresponding to the terminal, and performing random processing on an SRS signal transmitted by the terminal based on offset information determined by the pseudo-random sequence function, interference caused by the offset of an edge user's SRS being the same as the offset of a center user's SRS can be avoided, thereby improving the estimation performance of the uplink channel.

[0490] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0491] Fig. 9 1 is a block diagram of an apparatus 900 for transmitting a sounding reference signal SRS according to an exemplary embodiment. For example, the apparatus 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0492] Reference Fig. 9 , the device 900 may include one or more of the following components: a processing component 902 , a memory 904 , a power component 906 , a multimedia component 908 , an audio component 910 , an input / output (I / O) interface 912 , a sensor component 914 , and a communication component 916 .

[0493] The processing component 902 generally controls the overall operation of the device 900, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 902 may include one or more processors 920 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 902 may include one or more modules to facilitate the interaction between the processing component 902 and other components. For example, the processing component 902 may include a multimedia module to facilitate the interaction between the multimedia component 908 and the processing component 902.

[0494] The memory 904 is configured to store various types of data to support operations on the device 900. Examples of such data include instructions for any application or method operating on the device 900, contact data, phone book data, messages, pictures, videos, etc. The memory 904 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0495] The power component 906 provides power to the various components of the device 900. The power component 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 900.

[0496] The multimedia component 908 includes a screen that provides an output interface between the device 900 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 908 includes a front camera and / or a rear camera. When the device 900 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0497] The audio component 910 is configured to output and / or input audio signals. For example, the audio component 910 includes a microphone (MIC), and when the device 900 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 904 or sent via the communication component 916. In some embodiments, the audio component 910 also includes a speaker for outputting audio signals.

[0498] I / O interface 912 provides an interface between processing component 902 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0499] The sensor assembly 914 includes one or more sensors for providing various aspects of status assessment for the device 900. For example, the sensor assembly 914 can detect the open / closed state of the device 900, the relative positioning of components, such as the display and keypad of the device 900, and the sensor assembly 914 can also detect the position change of the device 900 or a component of the device 900, the presence or absence of user contact with the device 900, the orientation or acceleration / deceleration of the device 900, and the temperature change of the device 900. The sensor assembly 914 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 914 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0500] The communication component 916 is configured to facilitate wired or wireless communication between the device 900 and other devices. The device 900 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 916 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0501] In an exemplary embodiment, the apparatus 900 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above method.

[0502] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 904 including instructions, and the instructions can be executed by the processor 920 of the device 900 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0503] Fig.10 1 is a block diagram of a device 1100 for sending a sounding reference signal SRS according to an exemplary embodiment. For example, the device 1100 may be provided as a server. Fig.10 , the apparatus 1100 includes a processing component 1122, which further includes one or more processors, and a memory resource represented by a memory 1132 for storing instructions, such as applications, that can be executed by the processing component 1122. The application stored in the memory 1132 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1122 is configured to execute instructions to perform the above method.

[0504] The device 1100 may also include a power supply component 1126 configured to perform power management of the device 1100, a wired or wireless network interface 1150 configured to connect the device 1100 to a network, and an input / output (I / O) interface 1158. The device 1100 may operate based on an operating system stored in the memory 1132, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0505] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0506] It is further understood that the meanings of the words "in response to" and "if" involved in the present disclosure depend on the context and the actual usage scenario. For example, the word "in response to" used herein can be interpreted as "at..." or "when..." or "if".

[0507] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0508] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0509] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure.

[0510] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A method for transmitting a sounding reference signal SRS, characterized in that: The method is executed by a terminal, and includes: Determine offset information based on a pseudo-random sequence function, where the offset information is used to perform random processing on an SRS signal transmitted by the terminal, where the pseudo-random sequence function is determined based on identification information, where the identification information is sent by a network device to the terminal; Based on the offset information, an SRS signal is transmitted.

2. The method according to claim 1, characterized in that The pseudo-random sequence function is determined based on at least a random sequence initialization function and a maximum offset value, wherein the maximum offset value includes a maximum number of comb values ​​and / or maximum cyclic shifts of an SRS sequence; The random sequence initialization function is determined based on the identification information, or based on an SRS resource configuration parameter and the identification information.

3. The method according to claim 2, characterized in that The random sequence initialization function satisfies the following formula: C init (N ID )=N ID ;or Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a radio frame.

4. The method according to claim 2 or 3, characterized in that: The SRS resource configuration parameter includes at least one of the following: The number of symbols occupied by the SRS sequence in the time slot; The number of time slots occupied by the SRS sequence in a radio frame; The starting position of the SRS sequence transmission in a time slot; An integer value determined based on the maximum value of the offset.

5. The method according to claim 4, characterized in that The offset information includes offset information in the SRS comb transmission, and the offset information in the SRS comb transmission is used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after being offset in an SRS comb transmission; The maximum offset value is the comb value of the SRS sequence; The pseudo-random sequence function satisfies the following formula: in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

6. The method according to claim 5, characterized in that The value of Y is determined by the linear sum of one or more of the following: 0； The time slot t in which the SRS is transmitted; SRS sequence N ID ； k'∈{0,1,...,K TC -1}; Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

7. The method according to claim 5 or 6, characterized in that: The step of determining the offset information based on the pseudo-random sequence function includes: Based on the first pseudo-random sequence function, the comb transmission offset parameter of the SRS sequence is randomized to obtain the offset information within the SRS comb transmission.

8. The method according to claim 7, characterized in that The comb transmission offset parameter of the SRS sequence includes the offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods: Based on the first pseudo-random sequence function, and stated Performing overall randomization to obtain offset information within the SRS comb transmission; and Based on the first pseudo-random sequence function, After randomization, Get the offset information within the SRS comb transmission.

9. The method according to claim 8, characterized in that Based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows: in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

10. The method according to claim 8, characterized in that Based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows: in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

11. The method according to any one of claims 5 to 10, characterized in that The transmitting the SRS signal based on the offset information includes: Determine the frequency domain position occupied by the SRS based on the offset information in the SRS comb transmission, the starting position within the specified bandwidth size during partial frequency domain transmission, and the starting position of each hop; The SRS is transmitted at a determined frequency domain position.

12. The method according to claim 4, characterized in that The offset information includes cyclic shift offset information; The maximum value of the offset is the maximum number of maximum cyclic shifts; The pseudo-random sequence function satisfies the following formula: in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, which is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

13. The method according to claim 12, characterized in that The value of Y' is determined by the linear sum of one or more of the following: 0； The time slot t in which the SRS is transmitted; SRS Sequence ID N ID ； k'∈{0,1,...,K TC -1}; t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and A different SRS port index or a different port index minus a third reference value n ref .

14. The method according to claim 12 or 13, characterized in that The step of determining the offset information based on the pseudo-random sequence function includes: Based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly offset to obtain cyclic shift offset information.

15. The method according to claim 14, characterized in that Based on the second pseudo-random sequence function, a cyclic shift parameter of the SRS sequence is randomly shifted to obtain a calculation formula of the cyclic shift offset information, which is at least one of the following: as well as in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1, and mod is the remainder function.

16. The method according to any one of claims 12 to 15, characterized in that The transmitting the SRS signal based on the offset information includes: Generate an SRS random sequence based on the cyclic shift offset information; The SRS random sequence is transmitted.

17. The method according to claim 1, characterized in that The method further comprises: In response to receiving a change indication sent by a network device, changing the comb value offset of the sounding reference signal; or In response to receiving a change indication sent by a network device, changing a cyclic shift value of the sounding reference signal; The change indication is sent by the network device to the terminal when the time-frequency domain resources for transmitting the sounding reference signal overlap with those for transmitting other sounding reference signals.

18. A method for transmitting a sounding reference signal SRS, characterized in that: The method is performed by a network device, and the method includes: Sending identification information to the terminal, so that the terminal determines a pseudo-random sequence function based on the identification information, and determines offset information based on the pseudo-random sequence function, wherein the identification information includes a cell identifier of a cell where the terminal is located and / or a sending / receiving point identifier corresponding to the terminal; The receiving terminal determines and transmits an SRS signal based on the offset information.

19. The method according to claim 18, characterized in that The method further comprises: Sending SRS resource configuration parameters to the terminal so that the terminal determines a random sequence initialization function based on the identification information or the SRS resource configuration parameters and the identification information, and determines the pseudo-random sequence function based at least on the random sequence initialization function and the maximum offset value, wherein the maximum offset value includes the comb value of the SRS sequence and / or the maximum number of maximum cyclic shifts.

20. The method according to claim 19, characterized in that The random sequence initialization function satisfies the following formula: C init (N ID )=N ID ;or Among them, C init (N ID ) is the random sequence initialization function, N ID is the cell identifier of the cell where the terminal is located and / or the identifier of the sending and receiving point corresponding to the terminal, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots occupied by the SRS sequence in the radio frame.

21. The method according to claim 19 or 20, characterized in that The SRS resource configuration parameter includes at least one of the following: The number of symbols occupied by the SRS sequence in the time slot; The number of time slots occupied by the SRS sequence in the radio frame; The starting position of the SRS sequence transmission in a time slot; An integer value determined based on the maximum value of the offset.

22. The method according to claim 21, characterized in that The offset information includes offset information in the SRS comb transmission, and the offset information in the SRS comb transmission is used to determine the frequency domain starting position of the SRS sequence corresponding to each SRS port after being offset in an SRS comb transmission; The maximum offset value is the comb value of the SRS sequence; The pseudo-random sequence function satisfies the following formula: in, is the first pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X is the comb value of the SRS sequence or an integer multiple of the comb value, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y is the first reference value, m∈{0,...,X}, K TC is the comb value of the SRS sequence, ∑ is the summation function, and mod is the remainder function.

23. The method according to claim 22, characterized in that The value of Y is determined by the linear sum of one or more of the following: 0； The time slot t in which the SRS is transmitted; SRS Sequence ID N ID ； k'∈{0,1,...,K TC -1}; Among them, t is the time slot t where SRS is transmitted, T is the SRS transmission period, Indicates the floor of X.

24. The method according to claim 22 or 23, characterized in that The determining of the offset information based on the pseudo-random sequence function includes: Based on the first pseudo-random sequence function, randomizing the comb transmission offset parameter of the SRS sequence to obtain offset information within the SRS comb transmission; The comb transmission offset parameter of the SRS sequence includes the offset value of the SRS sequence corresponding to the SRS port within a comb value. The offset value of the SRS sequence at different symbols within a comb value The randomizing of the comb transmission offset parameter of the SRS sequence based on the first pseudo-random sequence function includes at least one of the following methods: Based on the first pseudo-random sequence function, and stated Performing overall randomization to obtain offset information within the SRS comb transmission; and Based on the first pseudo-random sequence function, After randomization, Get the offset information within the SRS comb transmission.

25. The method according to claim 24, characterized in that Based on the first pseudo-random sequence function, and stated The overall randomization process is performed to obtain the calculation formula for the offset information in the SRS comb transmission as follows: in, is the offset within the SRS comb transmission, n shift is the offset position relative to the reference point, is the number of subcarriers contained in a resource block RB; is the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value; p i is the antenna port index corresponding to the i-th SRS port; is the offset value of the positioned SRS sequence at different symbols within a comb value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function.

26. The method according to claim 24, characterized in that Based on the first pseudo-random sequence function, The randomization process is performed and the calculation formula is as follows: in, is the offset value after randomizing the offset value of the SRS sequence corresponding to the i-th SRS port within a comb value, is the comb value offset value; is the first pseudo-random sequence function; K TC is the comb value; mod is the remainder function, The port number of the SRS resource; The cyclic shift value configured for the network device; The maximum number of cyclic shifts configured for the network device.

27. The method according to claim 21, characterized in that The offset information includes cyclic shift offset information; The maximum value of the offset is the maximum number of maximum cyclic shifts; The pseudo-random sequence function satisfies the following formula: in, is the second pseudo-random sequence function, c() is the Gold sequence generation function, and its initialization value is the random sequence initialization function C init (N ID ); X' is an integer value determined by the maximum number of cyclic shifts configured by the network device, which is the maximum number of cyclic shifts, or an integer multiple of the maximum number of cyclic shifts, or the same as the value generated by the group hopping sequence, is the number of symbols occupied by the SRS sequence in the time slot, is the number of time slots contained in a wireless frame, l0 is the time domain starting position of the SRS sequence transmitted in a time slot, Y' is the second reference value, m∈{0,...,X}, The maximum number of cyclic shifts configured for the network device, ∑ is the sum function, and mod is the remainder function.

28. The method according to claim 27, characterized in that The value of Y' is determined by the linear sum of one or more of the following: 0； The time slot t in which the SRS is transmitted; SRS Sequence ID N ID ； k'∈{0,1,...,K TC -1}; t is the time slot where SRS is transmitted, T is the SRS transmission period, represents the floor of X; and A different SRS port index or a different port index minus a third reference value n ref .

29. The method according to claim 27 or 28, characterized in that The determining of the offset information based on the pseudo-random sequence function includes: Based on the second pseudo-random sequence function, randomly shift the cyclic shift parameter of the SRS sequence to obtain cyclic shift offset information; Among them, based on the second pseudo-random sequence function, the cyclic shift parameter of the SRS sequence is randomly offset to obtain the cyclic shift offset information, and at least one of the following calculation formulas is used: as well as in, is the cyclic shift offset information, is the port number of the SRS resource. The cyclic shift value configured for the network device, The maximum number of cyclic shifts configured for the network device, p i is the antenna port index corresponding to the i-th SRS port, is the second pseudo-random sequence function, I is greater than or equal to 1mod is the remainder function.

30. The method according to claim 18, characterized in that The method further includes: in response to determining that the sounding reference signal overlaps with time-frequency domain resources for transmitting other sounding reference signals, sending a change indication to the terminal; The change indication is used to instruct the terminal sending the sounding reference signal to change the comb value offset of the sounding reference signal, or to change the cyclic shift value of the sounding reference signal; and / or The change indication is used to instruct the terminal sending the other sounding reference signal to change the comb value offset of the other sounding reference signal, or to change the cyclic shift value of the other sounding reference signal.

31. A transmission device for a sounding reference signal SRS, characterized in that: The transmission device comprises: a determining unit, configured to determine offset information based on a pseudo-random sequence function, where the offset information is used to perform random processing on an SRS signal transmitted by a terminal, where the pseudo-random sequence function is determined based on identification information, where the identification information includes a cell identifier of a cell where the terminal is located and / or a transmitting and receiving point identifier corresponding to the terminal; The communication unit is configured to transmit an SRS signal based on the offset information.

32. A transmission device for a sounding reference signal SRS, characterized in that: The transmission device comprises: a sending unit configured to send identification information to a terminal, so that the terminal determines a pseudo-random sequence function based on the identification information, and determines offset information based on the pseudo-random sequence function, wherein the identification information includes a cell identifier of a cell where the terminal is located and / or a sending / receiving point identifier corresponding to the terminal; The receiving unit is configured to receive an SRS signal determined and transmitted by the terminal based on the offset information.

33. A transmission device for a sounding reference signal SRS, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the method described in any one of claims 1 to 17.

34. A transmission device for a sounding reference signal SRS, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the method described in any one of claims 18 to 30.

35. A storage medium, characterized in that: The storage medium stores instructions. When the instructions in the storage medium are executed by the processor of the terminal, the terminal can execute the method described in any one of claims 1 to 17. When the instructions in the storage medium are executed by the processor of the network device, the network device can execute the method described in any one of claims 18 to 30.

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