CN107294683B

CN107294683B - Method and device for sending uplink demodulation reference signal (DMRS)

Info

Publication number: CN107294683B
Application number: CN201610203781.3A
Authority: CN
Inventors: 王瑜新; 鲁照华; 陈艺戬; 李儒岳; 李永; 肖华华; 吴昊; 蔡剑兴
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-04-01
Filing date: 2016-04-01
Publication date: 2021-09-03
Anticipated expiration: 2036-04-01
Also published as: WO2017167155A1; CN107294683A

Abstract

The invention provides a method and a device for sending an uplink demodulation reference signal (DMRS), wherein the method comprises the following steps: configuring parameters required for a terminal to transmit uplink DMRS, wherein the parameters comprise at least one of the following parameters: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and sending the configured parameters to the terminal, wherein the parameters are used for indicating the terminal to send the uplink DMRS according to the parameters. The invention solves the problem that the multiplexing function of the uplink DMRS can not be enhanced in the related technology, and achieves the purposes of enhancing the multiplexing function of the uplink DMRS and meeting the requirement of uplink multi-user pairing.

Description

Method and device for sending uplink demodulation reference signal (DMRS)

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting an uplink Demodulation Reference Signal (DMRS).

Background

An Uplink Physical Channel of a Long Term Evolution (LTE) system includes a Physical Random Access Channel (PRACH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel (PUCCH). For Uplink Scheduling Information (Uplink Scheduling Information) of the PUSCH, the Uplink Scheduling Information may be sent to a target device (User Equipment, UE) by a network side through a Physical Downlink Control Channel (PDCCH for short) (also may be referred to as a terminal). Wherein, the uplink scheduling information includes: and control information such as resource allocation, modulation and coding scheme, Cyclic Shift (Cyclic Shift) of the DMRS and the like related to the physical uplink shared channel.

In the LTE system, a physical uplink shared channel adopts single antenna port transmission. One system frame (frame) contains 10 subframes (subframes), each containing 2 slots (slots). Fig. 1 is a diagram illustrating a conventional Cyclic Prefix in a slot of the related art, and as shown in fig. 1, for a conventional Cyclic Prefix (Normal CP), each slot is composed of 6 data symbols and 1 demodulation reference signal. Fig. 2 is a diagram of an Extended Cyclic Prefix (Extended CP) in a slot of the related art, and each slot is composed of 5 data symbols and 1 demodulation reference signal (dm CP).

The DMRS is composed of a sequence in the frequency domain, which is a cyclic shift of the reference signal sequence. In order to randomize inter-cell interference, a reference signal Sequence of a demodulation reference signal may implement Sequence Hopping (Sequence Hopping) or Sequence Group Hopping (Group Hopping) based on a time slot according to network side configuration, which is also called a Sequence Group Hopping (SGH) manner of time slot Hopping. That is, according to the network side configuration, the demodulation reference signals of a ue on two slots in a subframe are different, and vary with the slots in a system frame according to a certain hopping pattern.

In time slot n_sIn (2), the cyclic shift amount α of the demodulation reference signal is: alpha 2 pi n_csAnd/12, wherein,

within a radio frame, n_s＝0,1,...,19；

Is configured by the parameters of the higher layer,

configured by uplink scheduling information. n is_PRS(n_s) Generated by a pseudo-random generator, is over a time slot n_sThe variable parameter being expressed in particular as

Wherein the content of the first and second substances,

for the number of uplink time domain symbols contained in one time slot, a pseudo-random sequence generator is initialized once in each wireless frame under the initial condition that

Wherein the content of the first and second substances,

in order to be a cell ID,

the initialization value is a cell-specific parameter related to the cell ID to which the PUSCH sequence is shifted in pattern.

The uplink scheduling Information is carried in a physical Downlink Control channel (pdcch) and sent from the network side to the target ue in a certain Downlink Control Information format (DCI format). In the LTE system, the formats of downlink control information are divided into the following: DCI format 0, 1A, 1B, 1C, 1D, 2A, 3A, and the like, where DCI format 0 includes uplink scheduling information for indicating scheduling of a physical uplink shared channel PUSCH.

The LTE-Advanced system (abbreviated as LTE-a system) is a next-generation evolution system of the LTE system. In the LTE-A system, when the physical uplink shared channel adopts multi-antenna port transmission, the DMRS of each layer of data is precoded as same as each layer of data. The demodulation reference signals of different layer data include demodulation reference signals of Multi-layer data of the same User equipment in a Single-User Multiple-Input Multiple-Output system (SU-MIMO for short) and demodulation reference signals of Multi-layer data of Multiple User equipment in a Multi-User Multiple-Input Multiple-Output system (MU-MIMO for short), and are orthogonalized by using different demodulation reference signal Cyclic shifts (CS for short) and/or Orthogonal masks (OCC for short) to distinguish different layer data of User space multiplexing or different users. The orthogonal mask OCC may be [ +1, +1] and [ +1, -1], and is applied to the demodulation reference signals in two slots (slots) in one Subframe (Subframe). For MU paired users with unequal bandwidths, different users can only be orthogonalized by using the OCC, and therefore, in the related art, the maximum number of supported MU paired users is only 2.

Currently, in The Release of standards established by The 3rd Generation Partnership Project (3 GPP), The LTE standards are Release 8 and Release 9, and The LTE-a standard is Release 10, abbreviated as Rel-8, Rel-9 and Rel-10, respectively, and may also include subsequent releases, such as Rel-11/12/13/14. In the current Rel-10 release, the network side may indicate cyclic shift/OCC information of the demodulation reference signal for the scheduled PUSCH through DCI format 0 and DCI format 4, as shown in table 1, table 1 is a cyclic shift region of an uplink related DCI format

And [ w^(λ)(0) w^(λ)(1)]A mapping table.

TABLE 1

When orthogonalizing the demodulation reference signals by using the orthogonal mask OCC, the network side needs to jointly detect the demodulation reference signals on two slots in one subframe, and thus, it is required that the demodulation reference signals on two slots in one subframe of one ue are the same. In this case, the SGH scheme of slot hopping in the LTE system cannot be used. However, in order to randomize inter-cell interference as much as possible, an SGH scheme for subframe hopping is proposed in the related art. That is, according to the network side configuration, the demodulation reference signals of a ue on two slots in a subframe are the same, the demodulation reference signals on each subframe in a system frame are different, and the demodulation reference signals vary from subframe to subframe in a system frame according to a certain hopping pattern.

In the future LTE-ARelease 14(LTE-a release 14) research, under the scenario of configuring Full-Dimension MIMO (Full Dimension-MIMO, abbreviated as FD-MIMO) or MIMO with a large number of antennas, the number of users is increasing, and the requirement for uplink MU pairing will further increase, especially for unequal-bandwidth MU paired users. Therefore, how to further enhance the multiplexing function of the uplink DMRS is an urgent problem to be solved.

In view of the above problems, no effective solution has been proposed in the related art.

Disclosure of Invention

The invention provides a method and a device for sending an uplink demodulation reference signal (DMRS), which are used for at least solving the problem that the multiplexing function of the uplink DMRS cannot be enhanced in the related technology.

According to an aspect of the present invention, there is provided a method for transmitting an uplink demodulation reference signal DMRS, including: configuring parameters required for a terminal to transmit uplink DMRS, wherein the parameters comprise at least one of the following parameters: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and sending the configured parameters to the terminal, wherein the parameters are used for indicating the terminal to send the uplink DMRS according to the parameters.

Optionally, sending the configured parameter to the terminal includes: and sending the configured parameters to the terminal through a downlink control signaling and/or a high-level signaling.

Optionally, when the number of frequency combs of the uplink DMRS is configured to be 2, 4 or 8, a frequency comb index indicating the uplink DMRS is valid; and when the number of the frequency combs of the uplink DMRS is not configured or the number of the frequency combs of the uplink DMRS is configured to be 1, indicating that the frequency comb index of the uplink DMRS is invalid.

Optionally, sending the configured parameter to the terminal through the downlink control signaling includes: jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through the downlink control signaling; or, jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through the downlink control signaling; and sending the downlink control signaling to the terminal.

Optionally, jointly indicating, by the downlink control signaling, the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS includes: and jointly indicating the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS through 3-bit or 4-bit downlink control signaling.

Optionally, jointly indicating, by 3-bit downlink control signaling, that the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS include at least one of: when the frequency comb indexes of the DMRS comprise 0 and 1, jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through one or more of 8 states represented by 3-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through one or more of 8 states represented by 3-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3.

Optionally, jointly indicating, by 4-bit downlink control signaling, the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS includes at least one of: when the frequency comb index of the uplink DMRS comprises 0 and 1, jointly indicating the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS through one or more of 16 states represented by 4-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through one or more of 16 states represented by 4-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 3.

Optionally, jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through the downlink control signaling includes: jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through a 3-bit downlink control signaling; or jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through 4-bit downlink control signaling.

Optionally, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by 3-bit downlink control signaling, the method includes at least one of: when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1, -1, +1, and 1], the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling A mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the DMRS orthogonal mask is [ +1, -1, -1, +1 ]; when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1] or-1 ], the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling A mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ]; when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1], [ +1, -1, -1, +1, 1] through one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask jointly through one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask jointly through one or more of the 8 states represented by 3-bit downlink control signaling A mask, wherein the uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ].

Optionally, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated through 4-bit downlink control signaling, the method includes: jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through one or more of 16 states represented by 4-bit downlink control signaling, wherein the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); or, one or more of 16 states indicated by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); or, one or more of 16 states indicated by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); or, one or more of 16 states indicated by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2).

Optionally, sending the configured parameter to the terminal through the higher layer signaling includes: sending the configured 4-bit long orthogonal mask enable control bit to the terminal through the high-level signaling; wherein, when the 4-bit-long orthogonal mask enable control bit is not configured or enabled, it indicates that the uplink DMRS orthogonal mask used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ].

Optionally, sending the configured parameter to the terminal through the higher layer signaling includes: transmitting the configured segment generation DMRS sequence indicator to the terminal through the higher layer signaling, wherein when the segment generation DMRS sequence indicator is not configured or is in an invalid state, the terminal is indicated to generate the uplink DMRS sequence on each segment of the scheduled frequency band based on the same parameters for generating the uplink DMRS sequence; when the segment generation DMRS sequence indicator is configured or in a valid state, the terminal is indicated to generate the uplink DMRS sequence on each segment of the scheduled frequency band based on different parameters for generating the uplink DMRS sequence; wherein the parameters for generating the uplink DMRS sequence include at least one of: virtual cell identification ID, sequence group number and base sequence number.

According to another aspect of the present invention, there is provided a method for transmitting an uplink demodulation reference signal DMRS, including: receiving parameters configured by a base station and required for transmitting an uplink DMRS, wherein the parameters comprise at least one of the following parameters: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and generating the uplink DMRS and transmitting the uplink DMRS according to the parameters.

Optionally, the receiving the parameter configured by the base station and required for transmitting the uplink DMRS includes: and receiving the parameters sent by the base station through a downlink control signaling and/or a high-level signaling.

Optionally, the receiving the parameter sent by the base station through the downlink control signaling includes: receiving the downlink control signaling sent by the base station; wherein the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS; or, the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask.

Optionally, the receiving the downlink control signaling sent by the base station includes: and receiving a 3-bit or 4-bit downlink control signaling sent by the base station, wherein the 3-bit or 4-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS.

Optionally, the 3-bit downlink control signaling is used to jointly indicate that the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS include at least one of: when the frequency comb index of the uplink DMRS comprises 0 and 1, one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the uplink DMRS comprise 0, 1,2 and 3, one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; or one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or one or more of the 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3.

Optionally, the 4-bit downlink control signaling is used to jointly indicate that the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS include at least one of: when the frequency comb indexes of the DMRS comprise 0 and 1, one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; or one or more of the 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or one or more of the 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3.

Optionally, the receiving the downlink control signaling sent by the base station includes: receiving a 3-bit downlink control signaling sent by the base station, wherein the 3-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask; or receiving a 4-bit downlink control signaling sent by the base station, wherein the 4-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask.

Optionally, when receiving the 3-bit downlink control signaling sent by the base station, the method includes at least one of: when the uplink DMRS orthogonal mask comprises [ +1, +1, +1, +1], [ +1, -1, -1, -1], [ +1, +1, -1, -1, +1], one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1 ]; or, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, +1, -1 ]; or, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, +1, -1, -1 ]; or, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]; when the uplink DMRS orthogonal mask comprises [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1], or-1, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask The uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ]; when the uplink DMRS orthogonal mask comprises [ +1, +1, +1, +1], [ +1, -1, -1, -1, +1, +1], [ +1, -1, -1, +1, 1] and +1], one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask The uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or one or more of 8 states represented by the 3-bit downlink control signaling are used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ].

Optionally, when receiving the 4-bit downlink control signaling sent by the base station, the method includes: one or more of 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the uplink DMRS cyclic shift and the DMRS orthogonal mask, wherein the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); or, one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2).

Optionally, the receiving the parameter sent by the base station through the higher layer signaling includes: and receiving 4-bit-long orthogonal mask enable control bits sent by the base station through the higher layer signaling, wherein when the 4-bit-long orthogonal mask enable control bits are not configured or enabled, the uplink DMRS orthogonal mask used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ].

Optionally, the receiving the parameter sent by the base station through the higher layer signaling includes: receiving a high-layer signaling sent by the base station, wherein the high-layer signaling is used for indicating the segmentation to generate a DMRS sequence indicator; when the higher layer RRC signaling indicates that the segment generation DMRS sequence indicator is not configured or is in an invalid state, generating the uplink DMRS sequence on each segment of the scheduled frequency band based on the same parameters for generating the uplink DMRS sequence; and/or, when the RRC signaling indicates that the segment generation DMRS sequence indication identifier is configured or in a valid state is determined, generating the uplink DMRS sequence on each segment of the scheduled frequency band based on different parameters for generating the uplink DMRS sequence, wherein the parameters for generating the uplink DMRS sequence comprise at least one of the following parameters: virtual cell identification ID, sequence group number and base sequence number.

According to another aspect of the present invention, there is provided a transmitting apparatus for an uplink demodulation reference signal DMRS, including: a configuration module, configured to configure parameters required for a terminal to transmit an uplink DMRS, where the parameters include at least one of: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and a sending module, configured to send the configured parameter to the terminal, where the parameter is used to instruct the terminal to send the uplink DMRS according to the parameter.

According to another aspect of the present invention, there is provided a transmission apparatus for an uplink demodulation reference signal DMRS, comprising: a receiving module, configured to receive a parameter required for transmitting an uplink DMRS, where the parameter includes at least one of the following: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and the processing module is used for generating the uplink DMRS and sending the uplink DMRS according to the parameters.

By the method and the device, at least one of uplink DMRS cyclic shift, uplink DMRS orthogonal mask, uplink DMRS frequency comb index, orthogonal mask enabling control bit, segmented DMRS sequence indication identification and uplink DMRS frequency comb number can be configured for the terminal, so that uplink DMRS multiplexing under multiple users can be realized, uplink multi-user pairing requirements can be met, the problem that the uplink DMRS multiplexing function cannot be enhanced in the related technology is solved, and the purposes of realizing the uplink DMRS multiplexing function enhancement and meeting the uplink multi-user pairing requirements are achieved.

Drawings

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

fig. 1 is a diagram of a conventional cyclic prefix in one slot of the related art;

fig. 2 is a diagram of an extended cyclic prefix in one slot of the related art;

fig. 3 is a flowchart of a first method for transmitting a DMRS according to an embodiment of the present invention;

fig. 4 is a flowchart of a second method for transmitting a DMRS according to an embodiment of the present invention;

fig. 5 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to embodiment 1 of the present invention;

fig. 6 is a first schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to embodiment 3 of the present invention;

fig. 7 is a schematic diagram of a time-frequency resource required for transmitting an uplink DMRS according to embodiment 3 of the present invention;

fig. 8 is a block diagram of a structure of a transmission apparatus for a first DMRS according to an embodiment of the present invention;

fig. 9 is a block diagram of a structure of a transmission apparatus for a second DMRS according to an embodiment of the present invention.

Detailed Description

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

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

In this embodiment, a method for transmitting a DMRS is provided, and fig. 3 is a flowchart of the method for transmitting a DMRS according to an embodiment of the present invention, where the flowchart includes the following steps, as shown in fig. 3:

step S302, configuring parameters required for the terminal to transmit the uplink DMRS, wherein the parameters comprise at least one of the following parameters: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS;

and step S304, sending the configured parameters to the terminal, wherein the parameters are used for indicating the terminal to send the uplink DMRS according to the parameters.

Wherein, it may be the base station to perform the above operations.

Through the steps, the base station can configure at least one of uplink DMRS cyclic shift, uplink DMRS orthogonal mask, uplink DMRS frequency comb index, orthogonal mask enable control bit, segmented DMRS sequence indication identification and the number of uplink DMRS frequency combs for the terminal side, so that the multiplexing capacity of the uplink DMRS is enhanced when the number of uplink users is large, the successful access of the users is ensured, the problem that the multiplexing function of the uplink DMRS cannot be enhanced in the related technology is solved, and the purposes of enhancing the multiplexing function of the uplink DMRS and meeting the requirement of uplink multi-user pairing are achieved.

In an alternative embodiment, in the step S304, when the configured parameter is sent to the terminal, there may be multiple sending manners, for example, the configured parameter may be sent to the terminal through downlink control signaling and/or higher layer signaling. And, the signaling used when the parameters are transmitted may be determined according to a specific scenario.

In an optional embodiment, when the number of Frequency combs of the uplink DMRS is configured to be 2 or 4 or 8, it indicates that the Frequency comb index is valid (i.e., Interleaved Frequency Division Multiple Access (IFDMA) of the uplink DMRS is enabled, and when the number indication message of the Frequency combs is not configured or the number is configured to be 1, it indicates that the Frequency comb index is invalid (i.e., IFDMA of the uplink DMRS is not enabled), in this embodiment, it may further indicate whether the Frequency comb index is valid by indicating whether a time domain repetition coefficient of the uplink DMRS is 2 or 4 or 8, where when the time domain repetition coefficient of the uplink DMRS is 2 or 4 or 8, it indicates that the Frequency comb index is valid, otherwise, it indicates that the Frequency comb index is invalid, or it may further indicate whether the Frequency comb index is valid by indicating whether the IFDMA of the uplink DMRS is enabled, and when indicating the IFDMA (IFDMA) of the uplink DMRS, indicating that the frequency comb is valid, otherwise, indicating that the frequency comb index is invalid. The three indication manners are similar, and when in actual use, only one manner can be used to indicate whether the frequency comb index is effective.

In an optional embodiment, in step S304, the configured parameter may be sent to the terminal through a downlink control signaling, and in this embodiment, the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS may be jointly indicated through the downlink control signaling; or, the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated through a downlink control signaling; and sending the downlink control signaling to a terminal. Therefore, in this implementation, the downlink control signaling may be used to perform the joint indication of the multiple parameters, so as to avoid multiple signaling interactions with the terminal, and save time and resources.

In an optional embodiment, when the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated through the downlink control signaling, the following indication manner may be adopted: and jointly indicating the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS through 3-bit or 4-bit downlink control signaling. In this embodiment, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are indicated by 3-bit or 4-bit downlink control signaling, an indication manner in the related art may be used for the indication.

In an optional embodiment, when the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated by a 3-bit downlink control signaling, the indication may be performed by at least one of the following manners: when the frequency comb indexes of the DMRS comprise 0 and 1, one or more of 8 states represented by 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of 8 states represented by 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask, and frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, one or more of 8 states represented by 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; or, one or more of 8 states represented by 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask, and frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 2; or, one or more of the 8 states indicated by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 3.

In an optional embodiment, when the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated through 4-bit downlink control signaling, the indication may be performed by at least one of the following manners: when the frequency comb index of the uplink DMRS includes 0 and 1, the frequency comb index of the uplink DMRS, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS may be jointly indicated by one or more of 16 states indicated by a 4-bit downlink control signaling, where the frequency comb index of the uplink DMRS is 0, or the frequency comb index of the uplink DMRS, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated by one or more of 16 states indicated by a 4-bit downlink control signaling, where the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRSs include 0, 1,2, and 3, the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS may be jointly indicated by one or more of 16 states indicated by 4-bit downlink control signaling, where the frequency comb index of the uplink DMRS is 0, or the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated by one or more of 16 states indicated by 4-bit downlink control signaling, where the frequency comb index of the uplink DMRS is 1, or the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated by one or more of 16 states indicated by 4-bit downlink control signaling, where the frequency comb index of the uplink DMRS is 2, or the uplink DMRS cyclic shift is jointly indicated by one or more of 16 states indicated by 4-bit downlink control signaling The DMRS transmission method comprises bits, an uplink DMRS orthogonal mask and a frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3. Specific indication manners can be referred to table 1 and table 2 in the specific examples described later.

In an optional embodiment, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated through the downlink control signaling, the following indication manner may be used: jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through a 3-bit downlink control signaling; or, jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through 4-bit downlink control signaling. How to perform the joint indication of uplink DMRS cyclic shift and uplink DMRS orthogonal mask through control signaling is described as follows:

in an optional embodiment, the DMRS orthogonal mask may be four bits, and when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated through 3-bit downlink control signaling, the DMRS orthogonal mask may be indicated in at least one of the following manners: when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1, +1, -1, -1, +1, or-1 ] the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of the 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1], an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or, an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or, an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1, -1, +1, and [ +1, -1, -1, +1] the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or, the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or, the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of the 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or one or more of 8 states indicated by 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ].

In an optional embodiment, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by a 4-bit downlink control signaling, the following indication manner may be adopted: the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 16 states indicated by 4-bit downlink control signaling, where the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); or, jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through one or more of 16 states indicated by 4-bit downlink control signaling, where the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); or, jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through one or more of 16 states indicated by a 4-bit downlink control signaling, where the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); or, one or more of 16 states indicated by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2). It should be noted that the indication methods in the above embodiments are exemplified in several ways, and other reasonable indication methods may be adopted for indication.

In an alternative embodiment, in step S304, the configured parameter may be sent to the terminal through higher layer signaling, wherein the osma enable control bit in the parameter may be a 4-bit osma enable control bit, and the 4-bit osma enable control bit may have two states, one is that the 4-bit osma enable control bit is configured or enabled, and one is that the 4-bit osma enable control bit is not configured or enabled, so that, when actually applied, the terminal may be notified of a specific state of the 4-bit osma enable control bit, and optionally, the configured 4-bit osma enable control bit may be sent to the terminal through higher layer signaling, wherein, when the 4-bit osma enable control bit is not configured or enabled, the uplink DMRS osma used by the terminal is +1, +1, +1, +1] or [ +1, +1 ]. That is, in this embodiment, when the 4-bit long orthogonal mask enable control bit is not configured or is not enabled, the DMRS orthogonal mask may be configured to be [ +1, +1, +1, +1] or [ +1, +1], and the indication manner may be negotiated in advance by the base station and the terminal, or the indication manner may be configured for the terminal.

In an optional embodiment, in the step S304, the configured parameter may be sent to the terminal through higher layer signaling, where the parameter may include a segment-generated DMRS sequence indicator, and the segment-generated DMRS sequence indicator includes two states, one is an unconfigured or invalid state, and the other is a configured or valid state, when the segment-generated DMRS sequence indicator is notified to the terminal through the higher layer signaling, the state of the segment-generated DMRS sequence indicator may be notified to the terminal, and optionally, when the configured segment-generated DMRS sequence indicator is sent to the terminal, the parameter may be sent by: transmitting the configured segment generation DMRS sequence indicator to a terminal through high-level signaling, wherein when the segment generation DMRS sequence indicator is not configured or is in an invalid state, the segment generation DMRS sequence indicator indicates that the terminal generates an uplink DMRS sequence on each segment of a scheduled frequency band based on the same parameters for generating the uplink DMRS sequence; when the segment-generated DMRS sequence indicator is configured or is in an active state, indicating that the terminal generates the uplink DMRS sequence based on different parameters for generating the uplink DMRS sequence in each segment of the scheduled frequency band; wherein the parameter for generating the uplink DMRS sequence includes at least one of: virtual cell identification ID, sequence group number and base sequence number.

In this embodiment, a method for transmitting a DMRS is further provided, and fig. 4 is a flowchart of a method for transmitting a second DMRS according to an embodiment of the present invention, where as shown in fig. 4, the flowchart includes the following steps:

step S402, receiving parameters configured by a base station and required for transmitting the uplink DMRS, wherein the parameters comprise at least one of the following: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS;

and step S404, generating the uplink DMRS, and transmitting the uplink DMRS according to the parameters.

Wherein, it may be the terminal that performs the above-mentioned operations.

In an optional embodiment, when receiving the parameter configured by the base station and required for transmitting the uplink DMRS, the method may include: and receiving the parameters sent by the base station through the downlink control signaling and/or the high-level signaling. That is, the base station may transmit the parameters through downlink control signaling and/or higher layer signaling, but the transmission methods of the base station listed here are only two examples, and other reasonable transmission methods may be adopted. And, the signaling used when the parameters are transmitted may be determined according to a specific scenario.

In an optional embodiment, when the number of Frequency combs of the uplink DMRS is configured to be 2 or 4 or 8, it indicates that the Frequency comb index is valid (i.e., Interleaved Frequency Division Multiple Access (IFDMA) of the uplink DMRS is enabled, and when the number indication message of the Frequency combs is not configured or the number is configured to be 1, it indicates that the Frequency comb index is invalid (i.e., IFDMA of the uplink DMRS is not enabled) And when the interleaved frequency division multiple access of the uplink DMRS is indicated to be enabled, the frequency comb is indicated to be valid, otherwise, the frequency comb index is indicated to be invalid. The three indication manners are similar, and when in actual use, only one manner can be used to indicate whether the frequency comb index is effective.

In an optional embodiment, in the step S402, the receiving, by the base station, the parameter sent by the downlink control signaling in the following manner includes: receiving a downlink control signaling sent by a base station; the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS; or, the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask. Therefore, in this implementation, the base station may perform joint indication of the multiple parameters by using the downlink control signaling, so as to avoid multiple signaling interactions between the base station and the terminal, and save time and resources.

In an optional embodiment, the receiving the downlink control signaling sent by the base station includes: and receiving a 3-bit or 4-bit downlink control signaling sent by the base station, wherein the 3-bit or 4-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS. In this embodiment, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are indicated by the 4-bit downlink control signaling, an indication manner in the related art may be used for the indication.

In an optional embodiment, when the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated through 3-bit downlink control signaling, the indication may be performed by at least one of the following manners: when the frequency comb index of the uplink DMRS includes 0 and 1, one or more of the 8 states indicated by the 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift, an uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 0; or, one or more of the 8 states indicated by the 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask, and frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the uplink DMRS comprise 0, 1,2 and 3, one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of the 8 states indicated by the 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask, and frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; or, one or more of the 8 states indicated by the 3-bit downlink control signaling jointly indicate uplink DMRS cyclic shift, uplink DMRS orthogonal mask, and frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 2; or, one or more of the 8 states indicated by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 3.

In an optional embodiment, when the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated through 4-bit downlink control signaling, the indication may be performed by at least one of the following manners: when the frequency comb indexes of the DMRSs include 0 and 1, one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate an uplink DMRS cyclic shift, an uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 0, or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate an uplink DMRS cyclic shift, an uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0, or one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1, or one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2, or one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and, And the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS are determined, wherein the frequency comb index of the uplink DMRS is 3. Specific indication manners can be referred to table 1 and table 2 in the specific examples described later.

In an optional embodiment, when receiving the downlink control signaling sent by the base station, the method may include: receiving a 3-bit downlink control signaling sent by the base station, wherein the 3-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask; or receiving a 4-bit downlink control signaling sent by the base station, where the 4-bit downlink control signaling is used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask.

In an optional embodiment, when receiving a 3-bit downlink control signaling sent by the base station, the method includes at least one of: when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, -1, -1, -1, 1] the one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein, the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1], one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein, the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1], [ +1, -1, -1, -1, +1] and +1], one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein, the uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or one or more of 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]. In this embodiment, when the base station jointly indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through a 3-bit downlink control signaling, the base station may use a method in the related art to indicate the uplink DMRS cyclic shift.

In an optional embodiment, when receiving a 4-bit downlink control signaling sent by the base station, the method includes: one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2). In this embodiment, when the base station jointly indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through the 4-bit downlink control signaling, the base station may indicate the uplink DMRS orthogonal mask by using a method in the related art. It should be noted that the indication methods in the above embodiments are exemplified in several ways, and other reasonable indication methods may be adopted for indication.

In an optional embodiment, in the step S402, when receiving the parameter sent by the base station through higher layer signaling, the method may include: and receiving 4-bit orthogonal mask enable control bits transmitted by a base station through higher layer signaling, wherein when the 4-bit orthogonal mask enable control bits are not configured or enabled, the uplink DMRS orthogonal mask used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ]. That is, in this embodiment, when the 4-bit long orthogonal mask enable control bit is not configured or is not enabled, the DMRS orthogonal mask may be configured to be [ +1, +1, +1, +1] or [ +1, +1], and the indication manner may be negotiated in advance by the base station and the terminal, or the indication manner may be configured for the terminal.

In an optional embodiment, in the step S402, receiving the parameter sent by the base station through a higher layer signaling may include: receiving a high-level signaling sent by a base station, wherein the high-level signaling is used for indicating that a DMRS sequence indication identifier is generated in a segmented mode; when the higher layer RRC signaling indicates that the segment generation DMRS sequence indicator is not configured or is in an invalid state, generating the uplink DMRS sequence on each segment of the scheduled frequency band based on the same parameters for generating the uplink DMRS sequence; and/or, when the RRC signaling indicates that the segment generation DMRS sequence indication mark is configured or in an effective state is determined, generating an uplink DMRS sequence on each segment of a scheduled frequency band based on different parameters for generating the uplink DMRS sequence; wherein the parameter for generating the uplink DMRS sequence includes at least one of: virtual cell identification ID, sequence group number and base sequence number.

The following describes the present invention with reference to a specific embodiment, taking an example that a base station configures parameters required for transmitting an uplink DMRS for a terminal:

example 1

In this embodiment, a network side base station configures parameters required for transmitting an uplink demodulation reference signal DMRS for a user terminal (the same as the terminal described above), and notifies the user terminal of the configured parameters through a downlink control signaling or a higher layer signaling; the parameters may include:

frequency comb index of uplink DMRS.

Optionally, the base station indicates, through a downlink control signaling or a high-level signaling, whether a time-domain repetition coefficient of the uplink DMRS is 2 or 4 or 8, or indicates whether an interleaved frequency division multiple access IFDMA of the uplink DMRS is enabled, or indicates whether a number of frequency combs of the uplink DMRS is 2 or 4 or 8. A schematic diagram of IFDMA is shown in fig. 5.

When the base station does not configure or indicate that the time domain repetition coefficient of the uplink DMRS is 2 or 4 or 8, or does not configure or indicate whether the interleaved frequency division multiple access of the uplink DMRS is enabled, or does not configure or indicate whether the number of frequency combs of the uplink DMRS is 2 or 4 or 8, the time domain repetition coefficient of the uplink DMRS is 1 or the number of the frequency combs is 1.

Suppose 4 users are multiplexed in uplink, namely user 1, user 2, user 3 and user 4, wherein user 4 is an old version user before Rel-13 and has a frequency comb number of 1, and user 1, user 2 and user 3 are new version users after Rel-14 or Rel-14, and assume that the frequency comb number of uplink DMRSs configured for them is 4. When 4 users in different versions are spatially multiplexed, in order to maintain the orthogonality of uplink DMRS among the users, the OCC may be used to orthogonalize the users in different versions, and the users in a new version may be orthogonalized using different frequency combs. For example, the uplink DMRSs of user 1, user 2, and user 3 all use OCC [ +1, +1], user 1 uses comb 0, user 2 uses comb 1, user 3 uses comb 2, and the uplink DMRSs of user 4 use OCC [ +1, -1 ]. Therefore, uplink DMRS orthogonality can be achieved among 4 users of different versions.

Example 2

In this embodiment, a network side base station configures parameters required for transmitting an uplink demodulation reference signal DMRS for a user terminal, and notifies the configured parameters to the user terminal (corresponding to the terminal) through a downlink control signaling or a higher layer signaling; the parameters may include:

DMRS cyclic shift (corresponding to the uplink DMRS cyclic shift) for each layer or the first layer of the uplink spatial multiplexing, DMRS orthogonal mask (corresponding to the uplink DMRS orthogonal mask) for each layer or the first layer of the uplink spatial multiplexing, and frequency comb index of the uplink DMRS.

Optionally, the base station may jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS through downlink control signaling, for example, the joint indication is performed in a manner shown in table 2, table 3, table 4, or table 5:

TABLE 2

TABLE 3

TABLE 4

TABLE 5

Example 3

In this embodiment, a network side base station configures parameters required for transmitting an uplink demodulation reference signal DMRS for a user terminal (corresponding to the terminal), and notifies the configured parameters to the user terminal through a downlink control signaling or a higher layer signaling; the parameters may include:

DMRS cyclic shift (corresponding to the above-described DMRS cyclic shift) for each layer or the first layer is uplink spatially multiplexed, and DMRS orthogonal mask (corresponding to the above-described DMRS orthogonal mask) for each layer or the first layer is uplink spatially multiplexed. The uplink DMRS orthogonal mask may be a 4-bit uplink DMRS orthogonal mask.

In this embodiment, the time-frequency resources required for transmitting the uplink DMRS may include the following two ways:

the first method is as follows:

as shown in fig. 6, the time-frequency resource includes a time-domain position and a frequency-domain position.

Wherein the time domain position comprises:

when the subframe carrying the uplink DMRS is a conventional cyclic prefix, the time domain positions are a 2 nd time domain symbol and a 6 th time domain symbol of each time slot of the subframe, or a 3rd time domain symbol and a 5 th time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain positions are the 2 nd time domain symbol and the 5 th time domain symbol of each time slot of the subframe.

The frequency domain positions include:

the index of the PUSCH bandwidth occupied by the user terminal is the odd number of subcarrier positions or the even number of subcarrier positions; or the position of the subcarrier of the upper half bandwidth or the position of the subcarrier of the lower half bandwidth on the bandwidth occupied by the PUSCH of the user terminal;

or, odd subcarrier positions in odd-numbered subcarriers (i.e., subcarriers sequentially numbered 1,5, 9, 13, 17 … … in subcarriers), or even subcarrier positions in odd-numbered subcarriers (i.e., subcarriers sequentially numbered 3, 7, 11, 15, 19 … … in subcarriers), or odd subcarrier positions in even-numbered subcarriers (i.e., subcarriers sequentially numbered 2, 6, 10, 14, 18 … … in subcarriers), or even subcarrier positions in even-numbered subcarriers (i.e., subcarriers sequentially numbered 4, 8, 12, 16, 20 … … in subcarriers) in the PUSCH bandwidth occupied by the user terminal;

or all subcarrier positions in a partial bandwidth on the PUSCH bandwidth occupied by the user terminal.

The second method comprises the following steps:

as shown in fig. 7, the time-frequency resource includes a time-domain position and a frequency-domain position.

Wherein the time domain position comprises:

when the length of the uplink symbol cyclic prefix is the common length, the time domain position is the 4 th time domain symbol of each time slot of the subframe; when the length of the uplink symbol cyclic prefix is the extended length, the time domain position is the 3rd time domain symbol of each time slot of the subframe;

the frequency domain positions include:

all subcarrier positions on the PUSCH bandwidth occupied by the user terminal.

In this embodiment, the DMRSs on the 4 time domain symbols in each subframe in the first scheme may be time-domain-extended by using a 4-bit-long orthogonal mask OCC, or the DMRSs on the 4 time domain symbols in each two subframes in the second scheme may be time-domain-extended by using a 4-bit-long orthogonal mask OCC.

Wherein the 4-bit-long orthogonal mask OCC may be [ +1, +1, +1, +1], [ +1, -1, +1, -1], [ +1, +1, -1, -1, -1, +1 ]; or [ +1, +1, +1, +1], [ +1, -1, +1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1 ]; or [ +1, +1, +1, +1], [ +1, -1, +1, -1], [ -1, -1, +1, +1], [ +1, -1, -1, +1 ].

Optionally, the base station may jointly indicate the cyclic shift and the orthogonal mask of the uplink DMRS through 3-bit or 4-bit downlink control signaling, for example, perform joint indication in a manner shown in table 6, table 7, or table 8.

TABLE 6

TABLE 7

TABLE 8

Example 4

DMRS cyclic shift (corresponding to the uplink DMRS cyclic shift described above) of each layer or the first layer is uplink spatially multiplexed, and DMRS orthogonal mask (corresponding to the uplink DMRS orthogonal mask described above) of each layer or the first layer is uplink spatially multiplexed.

Optionally, the base station may jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through downlink control signaling, for example, the joint indication is performed in a manner shown in table 9 or table 10:

TABLE 9

Watch 10

The following describes the present invention by taking 4 user terminals (denoted as user 1, user 2, user 3, and user 4) as uplink MU pairing as an example: assuming that the cyclic prefix length of the uplink symbol is a common length, the time domain positions occupied by the uplink DMRSs of the user 1, the user 2, the user 3, and the user 4 are the 4 th time domain symbol of each slot of the subframe, and the frequency domain positions are all the subcarrier positions on the PUSCH bandwidth of the users, where the bandwidths of the PUSCH of the 4 users are partially or completely overlapped. User 1 uses [ +1, +1, +1, +1] to perform time domain spreading on DMRSs on 4 time domain symbols in two subframes, user 2 uses [ +1, -1, +1, -1] to perform time domain spreading on DMRSs on 4 time domain symbols in two subframes, user 3 uses [ +1, +1, -1, -1] to perform time domain spreading on DMRSs on 4 time domain symbols in two subframes, and user 4 uses [ +1, -1, -1, +1] to perform time domain spreading on DMRSs on 4 time domain symbols in two subframes, so that user 1, user 2, user 3, and user 4 can perform orthogonal pairing.

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

In this embodiment, a DMRS transmitting apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details of the foregoing description are omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 8 is a block diagram of a transmission apparatus for a first DMRS according to an embodiment of the present invention, and as shown in fig. 8, the apparatus includes a configuration module 82 and a transmission module 84, and the apparatus may be applied to a base station, and is described below.

A configuring module 82, configured to configure parameters required for a terminal to transmit an uplink DMRS, where the parameters include at least one of: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and a sending module 84, connected to the configuring module 82, configured to send the configured parameter to the terminal, where the parameter is used to instruct the terminal to send the uplink DMRS according to the parameter.

In an alternative embodiment, the sending module 84 may have a plurality of sending manners when sending the configured parameter to the terminal, for example, the configured parameter may be sent to the terminal through downlink control signaling and/or higher layer signaling. And, the signaling used when the parameters are transmitted may be determined according to a specific scenario.

In an optional embodiment, the sending module 84 may send the configured parameter to the terminal through a downlink control signaling, and in this embodiment, the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS may be jointly indicated through the downlink control signaling; or, the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated through a downlink control signaling; and sending the downlink control signaling to a terminal. Therefore, in this implementation, the downlink control signaling may be used to perform the joint indication of the multiple parameters, so as to avoid multiple signaling interactions with the terminal, and save time and resources.

in an optional embodiment, the DMRS orthogonal mask may be four bits, and when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated through 3-bit downlink control signaling, the DMRS orthogonal mask may be indicated in at least one of the following manners: when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1, +1, -1, -1, +1, or-1 ] the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of the 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1], an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or, an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or, an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1, -1, +1, and [ +1, -1, -1, +1] the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or, the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask may be jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or, the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of the 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or one or more of 8 states indicated by 3-bit downlink control signaling jointly indicate an uplink DMRS cyclic shift and an uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ].

In an alternative embodiment, the sending module 84 may send the configured parameter to the terminal through a higher layer signaling, where the osma enable control bit in the parameter may be a 4-bit osma enable control bit, and the 4-bit osma enable control bit may have two states, one is that the 4-bit osma enable control bit is configured or enabled, and one is that the 4-bit osma enable control bit is not configured or enabled, so that, when actually applied, the terminal may be notified of a specific state of the 4-bit osma enable control bit, and optionally, the configured 4-bit osma enable control bit may be sent to the terminal through a higher layer signaling, where, when the 4-bit osma enable control bit is not configured or enabled, it indicates that the uplink orthogonal DMRS used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ]. That is, in this embodiment, when the 4-bit long orthogonal mask enable control bit is not configured or is not enabled, the DMRS orthogonal mask may be configured to be [ +1, +1, +1, +1] or [ +1, +1], and the indication manner may be negotiated in advance by the base station and the terminal, or the indication manner may be configured for the terminal.

In an optional embodiment, the sending module 84 may send the configured parameter to the terminal through higher layer signaling, where the parameter may include a segment-generated DMRS sequence indicator, and the segment-generated DMRS sequence indicator includes two states, one is an unconfigured or invalid state, and the other is a configured or valid state, and when the segment-generated DMRS sequence indicator is notified to the terminal through the higher layer signaling, the state of the segment-generated DMRS sequence indicator may be notified to the terminal, and optionally, when the configured segment-generated DMRS sequence indicator is sent to the terminal, the sending module may send the configured segment-generated DMRS sequence indicator in the following manner: transmitting the configured segment generation DMRS sequence indicator to a terminal through a high-level signaling indication, wherein when the segment generation DMRS sequence indicator is not configured or is in an invalid state, the segment generation DMRS sequence indicator indicates that the terminal generates an uplink DMRS sequence on each segment of a scheduled frequency band based on the same parameters for generating the uplink DMRS sequence; when the segment-generated DMRS sequence indicator is configured or is in an active state, indicating that the terminal generates the uplink DMRS sequence based on different parameters for generating the uplink DMRS sequence in each segment of the scheduled frequency band; wherein the parameter for generating the uplink DMRS sequence includes at least one of: virtual cell identification ID, sequence group number and base sequence number.

Fig. 9 is a block diagram of a transmission apparatus for a second DMRS according to an embodiment of the present invention, and as shown in fig. 9, the apparatus includes a receiving module 92 and a processing module 94, and the apparatus may be applied to a terminal, and will be described below.

A receiving module 92, configured to receive a parameter required for transmitting the uplink DMRS, where the parameter includes at least one of the following: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS; and a processing module 94, connected to the receiving module 92, configured to generate the uplink DMRS and transmit the uplink DMRS according to the parameter.

In an optional embodiment, the receiving module 92 may receive the parameter configured by the base station and required for transmitting the uplink DMRS, in the following manner: and receiving the parameters sent by the base station through the downlink control signaling and/or the high-level signaling. That is, the base station may transmit the parameters through downlink control signaling and/or higher layer signaling, but the transmission methods of the base station listed here are only two examples, and other reasonable transmission methods may be adopted. And, the signaling used when the parameters are transmitted may be determined according to a specific scenario.

In an optional embodiment, the receiving module 92 may receive the parameter sent by the base station through the downlink control signaling in the following manner: receiving a downlink control signaling sent by a base station; the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS; or, the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask. Therefore, in this implementation, the base station may perform joint indication of the multiple parameters by using the downlink control signaling, so as to avoid multiple signaling interactions between the base station and the terminal, and save time and resources.

In an optional embodiment, the receiving module 92 may receive the downlink control signaling sent by the base station by using the following method: and receiving a 3-bit or 4-bit downlink control signaling sent by the base station, wherein the 3-bit or 4-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS. In this embodiment, when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are indicated by the 4-bit downlink control signaling, an indication manner in the related art may be used for the indication.

In an optional embodiment, when the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS are jointly indicated through 4-bit downlink control signaling, the indication may be performed by at least one of the following manners: when the frequency comb indexes of the DMRSs include 0 and 1, one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate an uplink DMRS cyclic shift, an uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 0, or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate an uplink DMRS cyclic shift, an uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0, or one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1, or one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2, or one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the frequency comb indexes of the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the uplink DMRS, And the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS are determined, wherein the frequency comb index of the uplink DMRS is 3. Specific indication modes can refer to the aforementioned table 1 and table 2.

In an optional embodiment, the receiving module 92 may receive the downlink control signaling sent by the base station by: receiving a 3-bit downlink control signaling sent by the base station, wherein the 3-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask; or receiving a 4-bit downlink control signaling sent by the base station, where the 4-bit downlink control signaling is used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask.

In an optional embodiment, when receiving the 3-bit downlink control signaling sent by the base station, the method includes at least one of the following steps: when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, -1, -1, -1, 1] the one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein, the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1], one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein, the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ]; when the DMRS orthogonal masks include [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1], [ +1, -1, -1, -1, +1] and +1], one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein, the uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or one or more of 8 states indicated by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ]. In this embodiment, when the base station jointly indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through a 3-bit downlink control signaling, the base station may use a method in the related art to indicate the uplink DMRS cyclic shift.

In an optional embodiment, the receiving module 92 may receive the 4-bit downlink control signaling sent by the base station by: one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); or one or more of the 16 states indicated by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2). In this embodiment, when the base station jointly indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through the 4-bit downlink control signaling, the base station may indicate the uplink DMRS orthogonal mask by using a method in the related art. It should be noted that the indication methods in the above embodiments are exemplified in several ways, and other reasonable indication methods may be adopted for indication.

In an alternative embodiment, the receiving module 92 may receive the parameter sent by the base station through higher layer signaling by: and receiving 4-bit orthogonal mask enable control bits transmitted by a base station through higher layer signaling, wherein when the 4-bit orthogonal mask enable control bits are not configured or enabled, the uplink DMRS orthogonal mask used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ]. That is, in this embodiment, when the 4-bit long orthogonal mask enable control bit is not configured or is not enabled, the DMRS orthogonal mask may be configured to be [ +1, +1, +1, +1] or [ +1, +1], and the indication manner may be negotiated in advance by the base station and the terminal, or the indication manner may be configured for the terminal.

In an alternative embodiment, the receiving module 92 may receive the parameter sent by the base station through higher layer signaling by: receiving a high-level signaling sent by a base station, wherein the high-level signaling is used for indicating that a DMRS sequence indication identifier is generated in a segmented mode; when the higher layer RRC signaling indicates that the segment generation DMRS sequence indicator is not configured or is in an invalid state, generating the uplink DMRS sequence on each segment of the scheduled frequency band based on the same parameters for generating the uplink DMRS sequence; and/or, when the RRC signaling indicates that the segment generation DMRS sequence indication mark is configured or in an effective state is determined, generating an uplink DMRS sequence on each segment of a scheduled frequency band based on different parameters for generating the uplink DMRS sequence; wherein the parameter for generating the uplink DMRS sequence includes at least one of: virtual cell identification ID, sequence group number and base sequence number.

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

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

s1, configuring parameters required for the terminal to transmit the uplink DMRS, wherein the parameters include at least one of the following: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS;

and S2, sending the configured parameters to the terminal, wherein the parameters are used for indicating the terminal to send the uplink DMRS according to the parameters.

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

s1, receiving parameters configured by the base station and required for transmitting the uplink DMRS, wherein the parameters include at least one of the following: the method comprises the steps of carrying out uplink DMRS cyclic shift, uplink DMRS orthogonal mask, frequency comb index of the uplink DMRS, orthogonal mask enabling control bit, sectionally generating DMRS sequence indication identification and the number of frequency combs of the uplink DMRS;

and S2, generating the uplink DMRS and transmitting the uplink DMRS according to the parameters.

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

Optionally, in this embodiment, the processor executes the above steps according to program codes stored in the storage medium.

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

The scheme in the embodiment of the invention can be suitable for the scene of uplink multi-user MU pairing, and particularly when the number of uplink users is large, the problem of insufficient DMRS multiplexing resources in uplink multi-user pairing is solved by enhancing the multiplexing capacity of uplink DMRS, so that the requirement of communication between multiple users and a network side can be met, and the communication access efficiency is improved.

In the various embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the modules is only one logical functional division, and there may be other division ways in actual implementation, such as: multiple modules or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may be separately used as one module, or two or more modules may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program code, such as removable storage devices, read-only memories, magnetic or optical disks, etc.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media that can store program code, such as removable storage devices, read-only memories, magnetic or optical disks, etc.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims

1. A method for transmitting an uplink demodulation reference signal (DMRS), the method comprising:

configuring parameters required for a terminal to transmit an uplink DMRS, wherein the parameters comprise a frequency comb index of the uplink DMRS, the number of frequency combs of the uplink DMRS and at least one of the following parameters: uplink DMRS cyclic shift, uplink DMRS orthogonal mask, orthogonal mask enable control bit, and segmented DMRS sequence indication identification;

sending the configured parameters to the terminal, wherein the parameters are used for instructing the terminal to send the uplink DMRS according to the parameters;

wherein, when the number of frequency combs of the uplink DMRS is configured to be 2, 4 or 8, a frequency comb index indicating the uplink DMRS is valid; and when the number of the frequency combs of the uplink DMRS is not configured or the number of the frequency combs of the uplink DMRS is configured to be 1, indicating that the frequency comb index of the uplink DMRS is invalid.

2. The method of claim 1, wherein sending the configured parameters to the terminal comprises:

and sending the configured parameters to the terminal through a downlink control signaling and/or a high-level signaling.

3. The method of claim 2, wherein sending the configured parameters to the terminal through the downlink control signaling comprises:

jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through the downlink control signaling; or, jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through the downlink control signaling;

and sending the downlink control signaling to the terminal.

4. The method of claim 3, wherein jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS via the downlink control signaling comprises:

and jointly indicating the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS through 3-bit or 4-bit downlink control signaling.

5. The method of claim 4, wherein jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS via 3-bit downlink control signaling comprises at least one of:

when the frequency comb indexes of the DMRS comprise 0 and 1, jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through one or more of 8 states represented by 3-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1;

when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through one or more of 8 states represented by 3-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3.

6. The method of claim 4, wherein jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS via 4-bit downlink control signaling comprises at least one of:

when the frequency comb index of the uplink DMRS comprises 0 and 1, jointly indicating the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS through one or more of 16 states represented by 4-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1;

when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS through one or more of 16 states represented by 4-bit downlink control signaling, wherein the frequency comb index of the uplink DMRS is 0; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 1; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or, one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and a frequency comb index of the uplink DMRS, where the frequency comb index of the uplink DMRS is 3.

7. The method of claim 3, wherein jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask via the downlink control signaling comprises:

jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through a 3-bit downlink control signaling; alternatively, the first and second electrodes may be,

and jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through 4-bit downlink control signaling.

8. The method of claim 7, wherein when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated via 3-bit downlink control signaling, the method comprises at least one of:

when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1, -1, +1, and 1], the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling A mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the DMRS orthogonal mask is [ +1, -1, -1, +1 ];

when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1] or-1 ], the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling A mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states represented by 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ];

when the uplink DMRS orthogonal mask includes [ +1, +1, +1, +1], [ +1, -1, -1, +1, +1], [ +1, -1, -1, +1, 1] through one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1], or indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask jointly through one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or indicates the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask jointly through one or more of the 8 states represented by 3-bit downlink control signaling A mask, wherein the uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated by one or more of 8 states represented by 3-bit downlink control signaling, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ].

9. The method of claim 7, wherein when the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask are jointly indicated via 4-bit downlink control signaling, the method comprises:

jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through one or more of 16 states represented by 4-bit downlink control signaling, wherein the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); alternatively, the first and second electrodes may be,

jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through one or more of 16 states represented by 4-bit downlink control signaling, wherein the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); alternatively, the first and second electrodes may be,

jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask through one or more of 16 states represented by 4-bit downlink control signaling, wherein the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); alternatively, the first and second electrodes may be,

and one or more of 16 states represented by 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2).

10. The method of claim 2, wherein sending the configured parameters to the terminal through the higher layer signaling comprises:

sending the configured 4-bit long orthogonal mask enable control bit to the terminal through the high-level signaling;

wherein, when the 4-bit-long orthogonal mask enable control bit is not configured or enabled, it indicates that the uplink DMRS orthogonal mask used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ].

11. The method of claim 2, wherein sending the configured parameters to the terminal through the higher layer signaling comprises:

transmitting the configured segment generation DMRS sequence indicator to the terminal through the higher layer signaling, wherein when the segment generation DMRS sequence indicator is not configured or is in an invalid state, the segment generation DMRS sequence indicator indicates that the terminal generates the sequence of the uplink DMRS on each segment of the scheduled frequency band based on the same parameters of the sequence for generating the uplink DMRS; when the segment generation DMRS sequence indicator is configured or in a valid state, indicating that the terminal generates the sequence of the uplink DMRS on each segment of the scheduled frequency band based on different parameters for generating the sequence of the uplink DMRS; wherein the parameter for generating the sequence of the uplink DMRS comprises at least one of: virtual cell identification ID, sequence group number and base sequence number.

12. A method for transmitting an uplink demodulation reference signal (DMRS), the method comprising:

receiving parameters required by a base station to transmit the uplink DMRS, wherein the parameters comprise a frequency comb index of the uplink DMRS, the number of frequency combs of the uplink DMRS and at least one of the following parameters: uplink DMRS cyclic shift, uplink DMRS orthogonal mask, orthogonal mask enable control bit, and segmented DMRS sequence indication identification;

generating the uplink DMRS and transmitting the uplink DMRS according to the parameters;

13. The method of claim 12, wherein receiving the parameters configured by the base station required for transmitting the uplink DMRS comprises:

and receiving the parameters sent by the base station through a downlink control signaling and/or a high-level signaling.

14. The method of claim 13, wherein receiving the parameters sent by the base station through downlink control signaling comprises:

receiving the downlink control signaling sent by the base station;

wherein the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS; or, the downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask.

15. The method of claim 14, wherein receiving the downlink control signaling sent by the base station comprises:

and receiving a 3-bit or 4-bit downlink control signaling sent by the base station, wherein the 3-bit or 4-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS.

16. The method of claim 15, wherein the 3-bit downlink control signaling is used to jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS comprises at least one of:

when the frequency comb index of the uplink DMRS comprises 0 and 1, one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1;

when the frequency comb indexes of the uplink DMRS comprise 0, 1,2 and 3, one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the cyclic shift of the uplink DMRS, the orthogonal mask of the uplink DMRS and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; or one or more of 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or one or more of the 8 states represented by the 3-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3.

17. The method of claim 15, wherein the 4-bit downlink control signaling is used to jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS comprises at least one of:

when the frequency comb indexes of the DMRS comprise 0 and 1, one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1;

when the frequency comb indexes of the DMRS comprise 0, 1,2 and 3, one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 0; or one or more of 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 1; or one or more of the 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 2; or one or more of the 16 states represented by the 4-bit downlink control signaling jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS, wherein the frequency comb index of the uplink DMRS is 3.

18. The method of claim 14, wherein receiving the downlink control signaling sent by the base station comprises:

receiving a 3-bit downlink control signaling sent by the base station, wherein the 3-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask; alternatively, the first and second electrodes may be,

receiving a 4-bit downlink control signaling sent by the base station, wherein the 4-bit downlink control signaling is used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask.

19. The method according to claim 18, wherein when receiving the 3-bit downlink control signaling transmitted by the base station, the method comprises at least one of:

when the uplink DMRS orthogonal mask comprises [ +1, +1, +1, +1], [ +1, -1, -1, -1], [ +1, +1, -1, -1, +1], one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, +1, +1 ]; or, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, +1, -1 ]; or, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, +1, -1, -1 ]; or, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ];

when the uplink DMRS orthogonal mask comprises [ +1, +1, +1, +1], [ +1, -1, -1], [ +1, +1, -1, -1], [ -1, +1, +1, -1], or-1, one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask The uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, -1, -1], or one or more of 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ -1, +1, +1, -1 ];

when the uplink DMRS orthogonal mask comprises [ +1, +1, +1, +1], [ +1, -1, -1, -1, +1, +1], [ +1, -1, -1, +1, 1] and +1], one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, +1, or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, +1, -1], or one or more of the 8 states represented by the 3-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask The uplink DMRS orthogonal mask is [ -1, -1, +1, +1], or one or more of 8 states represented by the 3-bit downlink control signaling are used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS orthogonal mask is [ +1, -1, -1, +1 ].

20. The method as claimed in claim 18, wherein when receiving the 4-bit downlink control signaling transmitted by the base station, the method comprises:

one or more of the 16 states represented by the 4-bit downlink control signaling are used for jointly indicating the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, wherein the uplink DMRS cyclic shift is (1,7,4,10) or (1,7,10, 4); alternatively, the first and second electrodes may be,

one or more of the 16 states represented by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (5,11,8,2) or (5,11,2, 8); alternatively, the first and second electrodes may be,

one or more of the 16 states represented by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (7,1,4,10) or (7,1,10, 4); alternatively, the first and second electrodes may be,

one or more of the 16 states represented by the 4-bit downlink control signaling are used to jointly indicate the uplink DMRS cyclic shift and the uplink DMRS orthogonal mask, where the uplink DMRS cyclic shift is (11,5,2,8) or (11,5,8, 2).

21. The method of claim 13, wherein receiving the parameters sent by the base station via the higher layer signaling comprises:

and receiving 4-bit-long orthogonal mask enable control bits sent by the base station through the higher layer signaling, wherein when the 4-bit-long orthogonal mask enable control bits are not configured or enabled, the uplink DMRS orthogonal mask used by the terminal is [ +1, +1, +1, +1] or [ +1, +1 ].

22. The method of claim 13, wherein receiving the parameters sent by the base station via the higher layer signaling comprises:

receiving a high-layer signaling sent by the base station, wherein the high-layer signaling is used for indicating the segmentation to generate a DMRS sequence indicator;

when the high-layer signaling indicates that the segment generation DMRS sequence indicator is not configured or is in an invalid state, generating the sequence of the uplink DMRS on each segment of the scheduled frequency band based on the same parameters for generating the sequence of the uplink DMRS; and/or the presence of a gas in the gas,

when the high-layer signaling indicates that the segment generation DMRS sequence indicator is configured or is in a valid state, generating the sequence of the uplink DMRS on each segment of the scheduled frequency band based on different parameters for generating the sequence of the uplink DMRS; wherein the parameter for generating the sequence of the uplink DMRS comprises at least one of: virtual cell identification ID, sequence group number and base sequence number.

23. A device for transmitting an uplink demodulation reference signal (DMRS), the device comprising:

a configuration module, configured to configure parameters required for a terminal to transmit an uplink DMRS, where the parameters include a frequency comb index of the uplink DMRS, a number of frequency combs of the uplink DMRS, and at least one of: uplink DMRS cyclic shift, uplink DMRS orthogonal mask, orthogonal mask enable control bit, and segmented DMRS sequence indication identification;

a sending module, configured to send the configured parameter to the terminal, where the parameter is used to instruct the terminal to send the uplink DMRS according to the parameter;

24. A device for transmitting an uplink demodulation reference signal (DMRS), the device comprising:

a receiving module, configured to receive a parameter required for transmitting an uplink DMRS, where the parameter includes a frequency comb index of the uplink DMRS, a number of frequency combs of the uplink DMRS, and at least one of: uplink DMRS cyclic shift, uplink DMRS orthogonal mask, orthogonal mask enable control bit, and segmented DMRS sequence indication identification; the processing module is used for generating the uplink DMRS and sending the uplink DMRS according to the parameters;