WO2018192213A1 - Signal processing method and device, and base station and user equipment - Google Patents

Abstract

Disclosed is a signal processing method, comprising: a base station receiving phase tracking reference signals (PTRS) of n user equipments scheduled thereby at a pre-set time-frequency resource, wherein n is a positive integer greater than 1; and the base station decoding the PTRSs of the n user equipments according to codewords corresponding to the PTRSs of the n user equipments and orthogonal cover codes (OCC), wherein the PTRSs of the n user equipments and the OCCs are mutually orthogonal based on the codewords. The embodiments of the present invention can solve the problem of resource multiplexing between phase tracking reference signals (PTRS) of a plurality of users, and can better ensure the estimation performance of a frequency offset and phase noise of each user equipment.

Description

Signal processing method, device, base station and user equipment

The present application claims priority to Chinese Patent Application No. 200910267467.6, entitled "A Signal Processing Method, Apparatus, Base Station, and User Equipment", filed on April 21, 2017, the priority of the above-mentioned prior application. The content is incorporated into this text by way of introduction.

Technical field

The present invention relates to the field of mobile communications technologies, and in particular, to a signal processing method, apparatus, base station, and user equipment.

Background technique

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple access techniques capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth, transmit power). Examples of such multiple access techniques include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, and single carrier frequency division. Address (SC-FDMA) system and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system.

These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate at the city, national, regional, and even global levels. An example of an emerging telecommunication standard is Long Term Evolution (LTE/LTE-A). LTE/LTE-A is an enhanced set of Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the Third Generation Partnership Project (3GPP). LTE/LTE-A is designed to better support mobile broadband Internet access by improving spectral efficiency, reducing cost, improving service, utilizing new spectrum, and using OFDMA on the downlink (DL), on the uplink (UL) uses SC-FDMA and other open standards using Multiple-Input Multiple-Output (MIMO) antenna technology for better integration. However, as the demand for mobile broadband access continues to increase, there is a need for further improvements in LTE technology. Currently, research on the fifth generation of communication technology (5th-Generation, 5G) has begun in the world.

5G is a multi-technology convergence communication that meets the needs of a wide range of data and connectivity services through technology changes and innovations. In the standard meeting, 3GPP established the SI (study item) for the 5G new air interface research. According to the division of vertical scenes by 5G, 3GPP mainly carries out new air interface technology from three aspects. Research, including: enhanced mobile broadband (eMBB), ultra reliable and low latency communications (URLLC), and massive machine type communications (mMTC). These three scenarios are different for the type of business, and their needs are different. Among them, for the eMBB service, the two main indicators are high bandwidth and low latency. In the future high-frequency communication, it may support a large bandwidth of 100 MHz, and it is likely that the entire bandwidth is directly allocated to one user at a certain time. Upstream scheduling delay and Hybrid Automatic Repeat reQuest (HARQ) feedback delay also have delay effects. For the mMTC service, which requires a narrowband service and requires a long battery life, this service requires a smaller granularity of frequency domain and a wider granularity of time domain resources.

According to the above several application scenarios, 3GPP has determined the main research frameworks of new frame structure, channel coding, multi-antenna and flexible duplex in previous meetings. The discussion in the latest RAN1#88 conference focuses on the specific implementation of each channel, including the synchronization channel, the broadcast channel, the design of the downlink control data channel, the initial access procedure, and the mapping of codewords to streams. Among them, in terms of MIMO, in addition to various transmission modes, pilots (CSI-RS, DMRS, PTRS, SRS) are also a main direction of design and discussion. Among them, 5G NR has added Phase Tracking Reference Signal (PTRS) for phase noise and frequency offset estimation compared to LTE.

However, there is no specific solution for the resource allocation method of the PRTS, for example, how to implement the transmission of the multi-user PTRS.

Summary of the invention

The embodiment of the invention provides a signal processing method, device, base station and user equipment, which solves the problem of resource reuse of multi-user PTRS.

In a first aspect, an embodiment of the present invention provides a signal processing method, where the method includes:

The base station receives the phase tracking reference signal PTRS of its scheduled N user equipments in a preset time-frequency resource; where N is a positive integer greater than one;

The base station decodes the PTRS of the N user equipments according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC). The PTRS of the N user equipments are orthogonal to the OCC based on the codewords.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers The carrier includes at least four minimum resource units RE, and the time-frequency resources of the two different sub-carriers carry the PTRS of the N user equipments, and the PTRS of each user equipment is mapped to the time-frequency resources on the two different sub-carriers. on.

Optionally, the base station sends indication information to the N user equipments scheduled by the base station, where the indication information is used to indicate an uplink transmission mode of the N user equipments, where the transmission mode includes a single-user SU mode of multiple input multiple output technology MIMO or Multi-user MU mode.

Optionally, the indication information is sent by using radio resource control RRC signaling.

Optionally, the RRC signaling includes a mode parameter, when the mode parameter is valid in the RRC signaling, the uplink transmission mode of the user equipment is the MU mode, and when the mode parameter is invalid in the RRC signaling, the corresponding user equipment The uplink transmission mode is SU mode.

Optionally, the base station sends the downlink control information DCI to the N user equipments, where the DCI includes a field value, where the field value is used to indicate the codeword and the OCC corresponding to the N user equipments.

Optionally, after the base station decodes the PTRS of the N user equipments according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC), the base station includes:

The base station performs frequency offset estimation and phase noise estimation for each user equipment according to the PTRS of each user equipment obtained after decoding.

It can be seen that, by using the method described in the first aspect, the base station can receive the PTRS of the N user equipments that are scheduled by the preset time-frequency resource, and the N-users according to the codewords and OCCs of the PTRSs of the N user equipments. The PTRS of the device is decoded, and frequency offset estimation and phase noise estimation are performed on each user equipment according to the PTRS of each user equipment obtained after decoding, so as to ensure the frequency offset and phase noise estimation performance of each user equipment, and at the same time Multi-user PTRS multiplexes time-frequency resources.

In a second aspect, an embodiment of the present invention provides a signal processing method, where the method includes:

The user equipment generates a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coding OCC;

The user equipment sends the PTRS to the base station on a preset time-frequency resource.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, and the PTRS of the user equipment is mapped to the two groups. On time-frequency resources on different subcarriers.

Optionally, before the user equipment sends the PTRS to the base station on the preset time-frequency resource, the method includes:

The user equipment determines, according to the indication information sent by the base station, the uplink transmission mode of the user equipment. The transmission mode includes a single-user SU mode or a multi-user MU mode of MIMO with multiple input multiple output technology.

Optionally, the indication information is obtained by using radio resource control RRC signaling sent by the base station.

Optionally, the user equipment receives the downlink control information DCI sent by the base station, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the user equipment.

Optionally, the user equipment acquires a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.

It can be seen that, by implementing the method described in the second aspect, the N user equipments can generate PTRS according to the corresponding codewords and the OCC, and the PTRSs between the N user equipments are orthogonal to each other, and can be sent on the same time-frequency resource. The PTRS is sent to the base station to implement resource multiplexing between the PTRSs of the N user equipments.

In a third aspect, an embodiment of the present invention provides a signal processing apparatus, where the apparatus includes:

a receiving module, configured to receive, by using a preset time-frequency resource, a phase tracking reference signal PTRS of the N user equipments that are scheduled; wherein, N is a positive integer greater than one;

a decoding module, configured to decode the PTRS of the N user equipment according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC); wherein the PTRS of the N user equipments are mutually positive based on the codeword and the OCC cross.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource unit REs, and time-frequency resources of two different sub-carriers are carried. The PTRS of N user equipments, the PTRS of each user equipment is mapped to time-frequency resources on two different sub-carriers.

Optionally, the device further includes:

a first sending module, configured to send indication information to the N user equipments scheduled by the base station, where the indication information is used to indicate an uplink transmission mode of the N user equipment, where the transmission mode includes a single user of multiple input multiple output technology MIMO SU mode or multi-user MU mode.

Optionally, the indication information is sent by using radio resource control RRC signaling.

Optionally, the RRC signaling includes a mode parameter, when the mode parameter is valid in the RRC signaling, the uplink transmission mode of the user equipment is the MU mode, and when the mode parameter is invalid in the RRC signaling, the corresponding user equipment is uplinked. The transmission mode is SU mode.

Optionally, the device further includes:

a second sending module, configured to send downlink control information DCI to the N user equipments, where the DCI is A field value is included, where the field value is used to indicate a codeword and an OCC corresponding to the N user equipments.

Optionally, after decoding the PTRS of the N user equipments according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC), the decoding module is further configured to:

According to the PTRS of each user equipment obtained after decoding, frequency offset estimation and phase noise estimation are respectively performed on each user equipment.

In a fourth aspect, an embodiment of the present invention provides a signal processing apparatus, where the apparatus includes:

Generating a module, configured to generate a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coding OCC;

And a sending module, configured to send the PTRS to the base station on a preset time-frequency resource.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, and the sending module maps the PTRS to the two groups. On time-frequency resources on different subcarriers.

Optionally, before the sending module sends the PTRS to the base station on the preset time-frequency resource, the sending module is further configured to:

And determining, according to the indication information sent by the base station, a transmission mode of the uplink of the user equipment, where the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.

Optionally, the indication information is obtained by using radio resource control RRC signaling sent by the base station.

Optionally, the device further includes:

The receiving module is configured to receive the downlink control information DCI sent by the base station, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the user equipment.

Optionally, the device further includes:

The obtaining module is configured to obtain a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.

In a fifth aspect, an implementation of the present invention provides a base station, including: a processor, a communication interface, and the processor is configured to:

Receiving, by a preset time-frequency resource, a phase tracking reference signal PTRS of its scheduled N user equipments through a communication interface; wherein N is a positive integer greater than one;

The PTRSs of the N user equipments are decoded according to the codewords corresponding to the PTRSs of the N user equipments and the orthogonal coverage coding (OCC); wherein the PTRSs of the N user equipments are orthogonal to each other based on the codewords.

Optionally, the processor is further configured to send, by using a communication interface, the indication information to the N user equipments that are scheduled by the base station, where the indication information is used to indicate an uplink transmission mode of the N user equipments. The transmission mode includes a single-user SU mode or a multi-user MU mode of MIMO with multiple input multiple output technology.

Optionally, the processor is further configured to send downlink control information DCI to the N user equipments by using a communication interface, where the DCI includes field values for indicating codewords and OCCs corresponding to the N user equipments.

Optionally, the processor is further configured to perform frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.

The sixth aspect of the present invention provides a user equipment, including: a processor and a communication interface, where the processor is configured to:

Generating a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coding OCC;

The PTRS is sent to the base station through a communication interface on a preset time-frequency resource.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, where the processor is configured to map the PTRS to the Time-frequency resources on two different sets of subcarriers.

Optionally, the processor is further configured to determine, according to the indication information sent by the base station, an uplink transmission mode of the user equipment, where the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.

Optionally, the processor is further configured to receive, by using a communications interface, downlink control information (DCI) sent by the base station, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the user equipment.

Optionally, the processor is further configured to obtain a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.

In a seventh aspect, a communication system is provided, the system comprising: the base station of the fifth aspect and the user equipment of the sixth aspect.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. For the ordinary technicians, other drawings can be obtained based on these drawings without any creative work.

1 is a schematic diagram of interaction between a phase noise and a frequency offset estimation PTRS transmission method in an uplink multi-user mode according to a first embodiment of the present invention;

2 is a schematic diagram of a single-user PTRS pattern according to a first embodiment of the present invention;

3 is a schematic diagram of a multi-user PTRS pattern according to a first embodiment of the present invention;

4 is a schematic flow chart of a signal processing method according to a second embodiment of the present invention;

FIG. 5 is a schematic flowchart of a signal processing method according to a third embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of a PTRS pattern of two user equipments according to an embodiment of the present invention; FIG.

FIG. 7 is a schematic diagram of a five user equipment PTRS pattern according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a signal processing apparatus according to a first embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a signal processing apparatus according to a second embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The term "comprising", when used in the specification and the claims of the claims The existence or addition of , whole, steps, operations, elements, components, and/or collections thereof.

It is also to be understood that the terminology of the present invention is to be construed as a The singular forms "", ",",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

It is further understood that the term "and/or" used in the description of the invention and the appended claims means any combination and all possible combinations of one or more of the associated listed items, .

As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "on" or "in response to determining" or "in response to detecting" depending on the context. . Similarly, the phrase "if determined" or "if detected [condition or event described]" may be interpreted in context to mean "once determined" or "in response to determining" or "once detected [condition or event described] ] or "response [Detected condition or event] is detected.

In the techniques described herein, a user device (eg, a cell phone or smart phone) can utilize a wireless communication system to transmit and receive data for two-way communication. The user equipment can communicate with the base station over the downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the user equipment, and the uplink (or reverse link) refers to the communication link from the user equipment to the base station.

The embodiment of the invention provides a signal processing method, a device, a base station and a user equipment, which can implement resource multiplexing between multi-user equipment PTRS, and ensure the frequency offset and phase noise estimation performance of each user equipment.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of interaction between a phase noise and a frequency offset estimation PTRS transmission method in an uplink multi-user mode according to a first embodiment of the present invention. As shown in FIG. 1, the method can include:

S101. The base station sends indication information to the N user equipments scheduled by the base station.

The indication information is used to indicate an uplink transmission mode of the N user equipments, where the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.

In the embodiment of the present invention, the base station may send the indication information to the N user equipments that are scheduled by the radio resource control (RRC) signaling, where the RRC includes a mode parameter MuModeEnable, and the mode parameter MuModeEnable is used. Indicates a transmission mode of the uplink of the user equipment, where the mode parameter MuModeEnable is set to be valid, indicating that the uplink transmission mode of the user equipment is a single-user SU mode, and there is no case of sharing PTRS with other users; when the mode parameter MuModeEnable is set to be valid The user equipment uplink transmission mode is indicated as a multi-user MU mode, and multiple users multiplex the time-frequency resources to transmit the PTRS within the transmission bandwidth.

S102. The user equipment determines an uplink transmission mode according to the indication information sent by the base station.

In the embodiment of the present invention, the user equipment may determine the MIMO mode of the uplink transmission according to the RRC signaling sent by the base station, for example, according to the mode parameter MuModeEnable in the RRC signaling. For example, when the mode parameter MuModeEnable received by the user equipment is invalid, indicating that the behavior on the user equipment is a single-user SU mode, there is no sharing of PTRS with other user equipments, and when the mode parameter MuModeEnable received by the user equipment is valid, the user is indicated. The multi-user MU mode is implemented on the device, and the PTRS needs to be processed accordingly to implement multiplexing of time-frequency resources.

S103. The base station sends downlink control information DCI to the N user equipments that it schedules.

In the embodiment of the present invention, the base station may send downlink control information (DCI) to the N user equipments scheduled by the base station, where the DCI includes field values of the Cyclic shift for DMRS and OCC index fields, and the user equipment may The Cyclic shift for DMRS and OCC index field value obtains the codeword and Orthogonal Cover Code (OCC) of the PTRS of the user equipment, and the specific correspondence is shown in Table 1.

S104: The user equipment acquires a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.

In the embodiment of the present invention, the user equipment may obtain the field value corresponding to the user equipment according to the DCI sent by the base station, and query the table 1 according to the field value, thereby obtaining the corresponding codeword and OCC.

Table 1

Cyclic shift for DMRS and OCC index field values	Codeword	OCC
000	[1 1 1 1]	[1 1]
001	[1 1 -1 -1]	[1 1]
010	[1 -1 1 -1]	[1 1]
011	[1 -1 -1 1]	[1 1]
100	[1 1 1 1]	[1 -1]
101	[1 1 -1 -1]	[1 -1]
110	[1 -1 1 -1]	[1 -1]
111	[1 -1 -1 1]	[1 -1]

S105. The user equipment generates a PTRS according to the codeword and the OCC corresponding to the user equipment.

In the embodiment of the present invention, when the uplink transmission mode of the user equipment is the single-user SU mode, the user equipment may directly send the PTRS base sequence. If the uplink transmission mode of the user equipment is the multi-user MU mode, in order to ensure orthogonality of the PTRS with other user equipments to multiplex time-frequency resources, the user equipment may use the user equipment according to the codeword and OCC corresponding to the user equipment. The PTRS base sequence is multiplied by its corresponding codeword and OCC to generate a PTRS for the user equipment.

S106. The user equipment sends the PTRS to the base station on a preset time-frequency resource.

In this embodiment of the present invention, the user equipment may send the PTRS to the base station on the preset time-frequency resource according to the MIMO mode of the uplink transmission. When the uplink mode of the user equipment is in the SU mode, in order to estimate the phase noise and the frequency offset, the PTRS needs to ensure a higher density in the time domain, and the user equipment sends the PTRS to the base station on the preset time-frequency resource. The manner of the single-user PTRS pattern provided by the first embodiment of the present invention as shown in FIG. 2 is adopted, and the part shown by 201 is controlled. The portion indicated by the region 202 is a data region, the portion indicated by 203 is a DeModulation Reference Signal (DMRS), and the portion indicated by 204 is a phase tracking reference signal PTRS.

As an optional embodiment, when the uplink mode of the user equipment is the MU mode, the user equipment may send the PTRS to the base station on the preset time-frequency resource, which may correspond to Table 1, as shown in FIG. FIG. 3 is a schematic diagram of a multi-user PTRS pattern provided by the first embodiment of the present invention. The portion shown by 301 is a control area, the portion shown by 302 is a data area, the portion shown by 303 is a demodulation reference signal DMRS, and the portion shown by 304 is a phase tracking reference signal PTRS. Each user equipment sends a PTRS to the base station on a preset time-frequency resource, where the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units. (source element, RE), the PTRS of the N user equipments is carried on the time-frequency resources of the two different sub-carriers, and the PTRS of each user equipment is mapped to the time-frequency resources on the two different sub-carriers.

It should be noted that the OCC is a zero cross-correlated code set, and the length may be 2. Specifically, as shown in Table 1, the OCC includes two OCC sequences [1, 1] and [1, -1]. As shown in Table 1, the OCRS sequence corresponding to the PTRS of the user equipment corresponding to the fields 000, 001, 010, and 011 is [1, 1], and the PTRS of the user equipment corresponding to the fields 100, 001, 110, and 111 is used. The OCC sequence is [1, -1].

The codeword is also a code set with zero cross-correlation, and the length can be 4. Specifically, as shown in Table 1, the codeword includes 8 codeword sequences, namely [1, 1, 1, 1], [1, respectively. 1,-1,-1], [1,-1,1,-1], [1,-1,-1,1], [1,1,1,1], [1,1,-1 , -1], [1, -1, 1, -1], [1, -1, -1, 1]. Wherein, "1" and "-1" in each codeword sequence are referred to as "code elements", and each user equipment corresponds to one codeword sequence. In Table 1, the first four user equipments, that is, the code words corresponding to the fields 000, 001, 010, and 011 are orthogonal to each other; the last four user equipments, that is, the user equipments corresponding to the fields 100, 001, 110, and 111 The codewords are orthogonal to each other; although the codewords are the same between the first user equipment and the fifth user setup, they can be orthogonal to each other through the OCC, that is, the first four user equipments and the last four user equipments pass each other through OCC. Orthogonal.

S107. The base station receives the PTRS of its scheduled N user equipments in a preset time-frequency resource.

In this embodiment of the present invention, the base station may receive the phase tracking reference signal PTRS of the N user equipments scheduled by the base station on the preset time-frequency resource, where N is a positive integer greater than 1. The preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource unit REs, and two groups of different sub-carriers carry N users on time-frequency resources. PTRS of the device, The PTRS of each user equipment is mapped to time-frequency resources on two different sets of sub-carriers.

S108. The base station decodes the PTRS of the N user equipments according to the codewords and OCCs corresponding to the PTRSs of the N user equipments.

In the embodiment of the present invention, the base station may decode the PTRS of the N user equipments according to the codewords and OCCs corresponding to the PTRSs of the N user equipments, where the decoding operation is: N user equipments on the two sets of subcarriers. The PTRS of each user equipment is orthogonal based on its corresponding codeword and OCC. For example, the base station receives the PTRS of the four user equipments that it schedules on the preset time-frequency resource, and assumes that the base station receives the field value corresponding to the user equipment 1 on the preset time-frequency resource, and the user equipment 2 corresponds to The field value is 001, the field value corresponding to user equipment 3 is 010, and the field value corresponding to user equipment 4 is 011. As shown in Table 1, the OCC[1,1] corresponding to the four user equipments. The base station decodes the PTRSs of the four user equipments received by the base station according to the codewords and OCCs corresponding to the four user equipments on the two subcarriers, that is, the base station multiplies the PTRS positions on the two sets of subcarriers by the user. The codewords [1, 1, 1, 1] and OCC [1, 1] corresponding to the device 1 are decoded to obtain the PTRS of the user equipment 1. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, 1, -1, -1] and OCC [1, 1] corresponding to the user equipment 2, thereby decoding the PTRS of the user equipment 2. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, -1, 1, -1] and OCC [1, 1] corresponding to the user equipment 3, thereby obtaining the PTRS of the user equipment 3. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, -1, -1, 1] and OCC [1, 1] corresponding to the user equipment 4, thereby obtaining the PTRS of the user equipment 4.

S109. The base station performs frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.

In the embodiment of the present invention, the base station may further decode the PTRS of the N user equipments according to the codewords and OCCs corresponding to the PTRSs of the N user equipments, and then further perform the user equipment according to the PTRSs of the user equipments obtained after the decoding. Perform PTRS channel estimation, as well as frequency offset and phase noise estimation.

As an alternative embodiment, FIG. 4 is a schematic diagram of FIG. 4 , and FIG. 4 is a schematic diagram of a PTRS pattern of two user equipments according to an embodiment of the present invention. Specifically, the following steps may be included:

The base station sends RRC signaling to two user equipments. The two user equipments receive the indication information sent by the base station by using the RRC signaling, where the RRC signaling includes a mode parameter, where the mode parameter may be set to MuModeEnable, and if the MuModeEnable is valid, the two user equipments may pass the MIMO. Multi-user MU mode sends uplink data, then the PTRS of two user equipments is sent. As shown in Figure 4, the PTRSs of the two user equipments share the preset time-frequency resources. The preset time-frequency resources include two sets of different sub-carriers, and each group of sub-carriers includes two sub-carriers. The group of subcarriers includes at least four REs.

The base station sends DCI to two user equipments.

In the embodiment of the present invention, the values of the Cyclic shift for DMRS and OCC index fields of the user equipment 1 and the user equipment 2 are respectively configured in the DCI. As shown in Table 1, the field value corresponding to the user equipment 1 is 0 or 000, and the user equipment 2 The corresponding field value is 1 or 001.

The user equipment determines the codeword and OCC corresponding to the PTRS of the user equipment by parsing the DCI.

In the embodiment of the present invention, the user equipment may determine the codeword and OCC corresponding to the PTRS of the user equipment by parsing the DCI. Specifically, corresponding to Table 1, two user equipments send uplink data and PTRS to the base station, where the codeword corresponding to the user equipment 1 is [1, 1, 1, 1] and the OCC is [1, 1], and the user equipment 2 The corresponding codeword is [1, 1, -1, -1] and the OCC is [1, 1].

The base station decodes the PTRSs of the two user equipments according to the codewords and OCCs corresponding to the PTRSs of the two user equipments.

In the embodiment of the present invention, the base station may perform decoding operations on the PTRSs of the two user equipments according to the codewords and OCCs corresponding to the PTRSs of the two user equipments. The base station multiplies the received PTRS sent by the two user equipments by the codewords [1, 1, 1, 1] and OCC [1, 1] corresponding to the user equipment 1 at the PTRS position on the two sets of subcarriers, thereby The PTRS of the user equipment 1 is decoded. Similarly, the base station multiplies the received PTRS sent by the two user equipments by the codewords [1, 1, -1, -1] and OCC of the user equipment 2 in the corresponding PTRS positions on the two sets of subcarriers. 1,1], thereby decoding the PTRS of the user equipment 2.

The base station performs frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.

In the embodiment of the present invention, the base station performs PTRS channel estimation, frequency offset and phase noise estimation on the user equipment 1 and the user equipment 2 respectively according to the PTRS of the user equipment 1 and the PTRS of the user equipment 2 obtained after decoding.

As an alternative embodiment, FIG. 5 is a schematic diagram of FIG. 5 , and FIG. 5 is a schematic diagram of a five user equipment PTRS pattern according to an embodiment of the present invention. Specifically, the following steps may be included:

The base station sends RRC signaling to five user equipments. The five user equipments receive the indication information sent by the base station by using the RRC signaling, where the RRC signaling includes a mode parameter, where the mode parameter may be Set to MuModeEnable, if the MuModeEnable is valid, the transmission mode of the five user equipments PTRS is as shown in FIG. 5, and the PTRSs of the five user equipments jointly occupy the preset time-frequency resources, and the preset time-frequency resources include two A group of different subcarriers includes 2 subcarriers on each group of subcarriers, and at least 4 REs.

The base station sends the DCI to five user equipments.

In the embodiment of the present invention, the Cyclic shift for DMRS and OCC index field values of the user equipment 1, the user equipment 2, the user equipment 3, the user equipment 4, and the user equipment 5 are respectively configured in the DCI. As shown in Table 1, the field value corresponding to user equipment 1 is 0 or 000, and the field value corresponding to user equipment 2 is 1 or 001, and the field value corresponding to user equipment 3 is 2, that is, 010, and the field value corresponding to user equipment 4 is 3 is 100, and the field value corresponding to the user equipment 5 is 4 or 101.

The user equipment determines the codeword and OCC corresponding to the PTRS of the user equipment by parsing the DCI.

In the embodiment of the present invention, the user equipment may determine the codeword and OCC corresponding to the PTRS of the user equipment by parsing the DCI. Specifically, the user equipment may send the uplink data and the PTRS to the base station, where the codeword corresponding to the user equipment 1 is [1, 1, 1, 1] and the OCC is [1, 1], and the user The codeword corresponding to device 2 is [1, 1, -1, -1] and the OCC is [1, 1], and the codeword corresponding to user equipment 3 is [1, -1, 1, -1] and OCC is [ 1,1], the codeword [1,-1,-1,1] and OCC corresponding to the user equipment 4 are [1,1], the codewords [1,1,1,1] corresponding to the user equipment 5 and the OCC Is [1,-1].

The base station decodes the PTRS of the five user equipments according to the codeword and OCC corresponding to the PTRS of the five user equipments.

In the embodiment of the present invention, the base station may perform a decoding operation on the PTRS of the five user equipments according to the codewords and OCCs corresponding to the PTRSs of the five user equipments. The base station multiplies the received signal by the codewords [1, 1, 1, 1] and OCC [1, 1] corresponding to the user equipment 1 at corresponding PTRS positions on the two sets of subcarriers, thereby decoding the user equipment 1 PTRS. The base station multiplies the received signal by the codewords [1, 1, -1, -1] and OCC [1, 1] corresponding to the user equipment 2 at corresponding PTRS positions on the two sets of subcarriers, thereby obtaining the user. PTRS of device 2. The base station multiplies the received signal by the codewords [1, -1, 1, -1] and OCC [1, 1] corresponding to the user equipment 3 at corresponding PTRS positions on the two sets of subcarriers, thereby obtaining the PTRS of user equipment 3. The base station multiplies the received signal by the codewords [1, -1, -1, 1] and OCC [1, 1] corresponding to the user equipment 4 at corresponding PTRS positions on the two sets of subcarriers, thereby obtaining the PTRS of user equipment 4. The base station multiplies the received signal by the codewords [1, 1, 1, 1] and OCC [1, -1] corresponding to the user equipment 5 at corresponding PTRS positions on the two sets of subcarriers, thereby obtaining the user. PTRS of device 5.

The base station performs frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.

In the embodiment of the present invention, the base station respectively performs the user equipment 1 and the user equipment according to the PTRS of the user equipment 1 , the PTRS of the user equipment 2, the PTRS of the user equipment 3, the PTRS of the user equipment 4, and the PTRS of the user equipment 5, respectively. 2. User equipment 3, user equipment 4, and user equipment 5 perform PTRS channel estimation, and frequency offset and phase noise estimation.

It can be seen that, in the embodiment of the present invention, the eNB sends the RRC signaling to the user equipment, so that the user equipment determines the uplink transmission mode of the user equipment, and when the user equipment determines that the uplink transmission mode is the MU mode, multiplies the PTRS base sequence by the codeword. And the OCC, the orthogonality between the PTRSs of the multiple user equipments is implemented, thereby reducing the pilot overhead and the control information overhead by adopting a code division manner, thereby realizing resource multiplexing between the multi-user equipment PTRS.

Please refer to FIG. 6, which is a schematic flowchart of a signal processing method according to a second embodiment of the present invention. As shown, the method can include:

S601. The base station sends indication information to the N user equipments scheduled by the base station.

In the embodiment of the present invention, the base station may send the indication information to the N user equipments scheduled by the base station on the preset time-frequency resources, where the indication information is used to indicate the uplink transmission mode of the N user equipments, where the transmission mode includes multiple Input single output technology MIMO single-user SU mode or multi-user MU mode. The indication information is sent to the N user equipments scheduled by the RRC signaling by the RRC signaling, where the RRC signaling includes a mode parameter MuModeEnable, where the mode parameter MuModeEnable is used to indicate the uplink transmission mode of the user equipment. When the mode parameter MuModeEnable is valid, the transmission mode indicating that the uplink of the corresponding user equipment is the MU mode, and when the mode parameter MuModeEnable is invalid, indicating that the uplink transmission mode of the corresponding user equipment is the SU mode. It can be seen that, in this implementation manner, the base station sends indication information to the N user equipments, and determines an uplink transmission mode of the N user equipments.

S602. The base station sends downlink control information DCI to the N user equipments.

In the embodiment of the present invention, the base station may send the downlink control information DCI to the N user equipments, where the DCI includes a field value, where the field value is used to indicate the corresponding codeword and OCC in the N user equipments. Specifically, the DCI includes a field value, where the field value is used to indicate a corresponding Cyclic shift for DMRS and OCC index of the N user equipments. The value of the corresponding Cyclic shift for DMRS and OCC index field in the N user equipments corresponds to the codeword and OCC of each user equipment. example For example, if the value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment 1 is 000, the codeword corresponding to the user equipment 1 is [1, 1, 1, 1], and the corresponding OCC is [ 1,1]. For another example, if the value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment 2 is 001, the codeword corresponding to the user equipment 2 is [1, 1, -1, -1], and the corresponding OCC is [1, 1]. For example, if the value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment 3 is 100, the codeword corresponding to the user equipment 3 is [1, 1, 1, 1], and the corresponding OCC is [1, -1. ]. It can be seen that, in this implementation manner, the base station sends the DCI to the N user equipments, and obtains the field values of the codewords and OCCs corresponding to the N user equipments.

S603. The base station receives, by using a preset time-frequency resource, a phase tracking reference signal PTRS of the N user equipments that it schedules.

In this embodiment of the present invention, the base station may receive the phase tracking reference signal PTRS of the N user equipments scheduled by the base station on the preset time-frequency resource, where N is a positive integer greater than 1. The preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource unit REs, and two groups of different sub-carriers carry N users on time-frequency resources. The PTRS of the device, the PTRS of each user equipment is mapped to the time-frequency resources on two different sub-carriers.

S604. The base station decodes the PTRSs of the N user equipments according to the codewords corresponding to the PTRSs of the N user equipments and the orthogonal coverage coding (OCC).

In the embodiment of the present invention, the base station may perform a decoding operation on the PTRS of the N user equipments according to the codewords and OCCs corresponding to the PTRSs of the N user equipments, where the decoding operation is: N users on the two sets of subcarriers. The PTRS of each user equipment of the device is orthogonal based on its corresponding codeword and OCC. For example, the base station receives the PTRS of the four user equipments that it schedules on the preset time-frequency resource, and assumes that the base station receives the field value corresponding to the user equipment 1 on the preset time-frequency resource, and the user equipment 2 corresponds to The field value is 001, the field value corresponding to user equipment 3 is 010, and the field value corresponding to user equipment 4 is 011. As shown in Table 1, the OCC[1,1] corresponding to the four user equipments. The base station decodes the PTRSs of the four user equipments received by the base station according to the codewords and OCCs corresponding to the four user equipments on the two subcarriers, that is, the base station multiplies the PTRS positions on the two sets of subcarriers by the user. The codewords [1, 1, 1, 1] and OCC [1, 1] corresponding to the device 1 are decoded to obtain the PTRS of the user equipment 1. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, 1, -1, -1] and OCC [1, 1] corresponding to the user equipment 2, thereby decoding the PTRS of the user equipment 2. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, -1, 1, -1] and OCC [1, 1] corresponding to the user equipment 3, thereby The PTRS of the user equipment 3 is obtained. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, -1, -1, 1] and OCC [1, 1] corresponding to the user equipment 4, thereby obtaining the PTRS of the user equipment 4.

For example, corresponding to Table 1, the base station receives the PTRS of the five user equipments that it schedules on the preset time-frequency resource, and assumes that the base station receives the field value corresponding to the user equipment 1 on the preset time-frequency resource. The value of the field corresponding to the user equipment 2 is 001, the field value corresponding to the user equipment 3 is 010, the field value corresponding to the user equipment 4 is 011, and the field value corresponding to the user equipment 5 is 111. As shown in Table 1, the first four are OCC[1,1] corresponding to the user equipment, OCC[1,-1] corresponding to the user equipment 5. The base station decodes the PTRSs of the five user equipments received by the base station according to the codewords and OCCs corresponding to the five user equipments on the two subcarriers, that is, the base station multiplies the PTRS positions on the two sets of subcarriers by the user. The codewords [1, 1, 1, 1] and OCC [1, 1] corresponding to the device 1 are decoded to obtain the PTRS of the user equipment 1. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, 1, -1, -1] and OCC [1, 1] corresponding to the user equipment 2, thereby decoding the PTRS of the user equipment 2. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, -1, 1, -1] and OCC [1, 1] corresponding to the user equipment 3, thereby obtaining the PTRS of the user equipment 3. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, -1, -1, 1] and OCC [1, 1] corresponding to the user equipment 4, thereby obtaining the PTRS of the user equipment 4. The base station multiplies the PTRS position on the two sets of subcarriers by the codewords [1, 1, 1, 1] and OCC [1, -1] corresponding to the user equipment 5, thereby obtaining the PTRS of the user equipment 5. It can be seen that, in this implementation manner, the base station can decode the PTRS of the N user equipments, eliminate the PTRS interference of the multiple user equipments, and implement resource multiplexing between the PTRSs of the multiple user equipments.

S605: The base station performs frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.

In the embodiment of the present invention, the base station may further decode the PTRS of the N user equipments according to the codewords and OCCs corresponding to the PTRSs of the N user equipments, and then further perform the user equipment according to the PTRSs of the user equipments obtained after the decoding. Perform PTRS channel estimation, as well as frequency offset and phase noise estimation.

In the embodiment of the present invention, the base station may send the indication information to the N user equipments scheduled by the base station, and indicate the uplink transmission mode of the N user equipments, and send the downlink control information DCI to the N user equipments to indicate the N The field value of the corresponding codeword and the OCC in the user equipment, and the PTRS of the N user equipments that are scheduled to be received by the preset time-frequency resource, the codeword corresponding to the PTRS of the N user equipments, and the OCC to the N user equipments PTRS is decoded and obtained according to decoding The PTRS of each user equipment performs frequency offset estimation and phase noise estimation for each user equipment.

It can be seen that the signal processing method provided in the embodiment of the present invention implements orthogonality between PTRSs of multiple user equipments, can effectively support more user equipments for uplink data transmission, and implement resource multiplexing between multi-user equipments PTRS. It can guarantee the estimation performance of frequency offset and phase noise for user equipment.

Please refer to FIG. 7, which is a schematic flowchart of a signal processing method according to a third embodiment of the present invention. The method can be used in a user equipment, and the user equipment can also be called a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), and the like. The user equipment can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) user device, augmented reality (AR) user equipment, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless in transport safety A terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. As shown, the method can include the following steps:

S701: The user equipment determines, according to the indication information sent by the base station, the uplink transmission mode of the user equipment.

In the embodiment of the present invention, the user equipment may receive the indication information sent by the base station, and determine the uplink transmission mode of the user equipment according to the indication information sent by the base station, where the transmission mode includes a multi-MIMO SU mode or an MU mode. The indication information may be obtained by using RRC signaling sent by the base station, and the mode parameter MuModeEnable is included in the RRC signaling. For example, if the mode parameter MuModeEnable in the RRC signaling sent by the base station is valid, the indication information is determined to indicate that the uplink mode of the user equipment is the MU mode. If the mode parameter MuModeEnable of the RRC signaling sent by the user equipment is invalid, the indication information is determined to indicate that the uplink mode of the user equipment is the SU mode.

S702. The user equipment receives downlink control information DCI sent by the base station.

In the embodiment of the present invention, the user equipment may receive the DCI sent by the base station, where the DCI includes field values for indicating the codeword and OCC corresponding to the user equipment. Specifically, the DCI includes a value indicating a corresponding Cyclic shift for DMRS and OCC index field in the N user equipments.

S703. The user equipment acquires a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.

In the embodiment of the present invention, the user equipment may parse the DCI sent by the base station according to the parsing The value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment obtained by the DCI, and querying the table 1 according to the field value, thereby obtaining the codeword and OCC corresponding to the user equipment PTRS. The value of the corresponding Cyclic shift for DMRS and OCC index field in the N user equipments corresponds to the codeword and OCC of each user equipment. For example, if the value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment 1 is 000, the codeword corresponding to the user equipment 1 is [1, 1, 1, 1], and the corresponding OCC is [ 1,1]. For another example, if the value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment 2 is 001, the codeword corresponding to the user equipment 2 is [1, 1, -1, -1], and the corresponding OCC is [1, 1]. For example, if the value of the Cyclic shift for DMRS and OCC index field corresponding to the user equipment 3 is 100, the codeword corresponding to the user equipment 3 is [1, 1, 1, 1], and the corresponding OCC is [1, -1. ].

S704. The user equipment generates a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coded OCC.

In the embodiment of the present invention, when the uplink transmission mode of the user equipment is the single-user SU mode, the user equipment may directly send the PTRS base sequence. If the uplink transmission mode of the user equipment is the multi-user MU mode, in order to ensure orthogonality of the PTRS with other user equipments to multiplex time-frequency resources, the user equipment may obtain the codeword and OCC corresponding to the user equipment PTRS. Multiplying the PTRS base sequence of the user equipment with the codeword corresponding to the user equipment PTRS and the OCC to generate a PTRS of the user equipment.

S705. The user equipment sends the PTRS to the base station on the preset time-frequency resource.

In the embodiment of the present invention, the user equipment may send the PTRS to the base station on the preset time-frequency resource, where the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four The minimum resource unit RE, the PTRS of the user equipment is mapped to the time-frequency resources on the two different sets of sub-carriers.

In the embodiment of the present invention, the user equipment may receive the indication information sent by the base station, and determine, according to the indication information, the uplink transmission mode of the user equipment, and the field value sent by the receiving base station, where the field value is used to indicate that the user equipment corresponds to The codeword and the OCC obtain the codeword and the OCC corresponding to the user equipment according to the DCI, and the user equipment generates the PTRS of the user equipment based on the acquired codeword and the OCC, and is on the preset time-frequency resource. The PTRS is sent to the base station. It can be seen that the signal processing method provided in the embodiment of the present invention implements resource multiplexing between multi-user PTRSs.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a signal processing apparatus according to a first embodiment of the present invention. Specifically, the device includes a receiving module 801 and a decoding module 802. among them:

The receiving module 801 is configured to receive, according to a preset time-frequency resource, a phase tracking reference signal PTRS of the N user equipments scheduled by the user, where N is a positive integer greater than 1.

The decoding module 802 is configured to decode the PTRS of the N user equipments according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC); wherein the PTRS of the N user equipments is based on the codeword and the OCC. Orthogonal.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource unit REs, and time-frequency resources of two different sub-carriers are carried. The PTRS of N user equipments, the PTRS of each user equipment is mapped to time-frequency resources on two different sub-carriers.

Optionally, the device further includes a first sending module 803, where:

The first sending module 803 is configured to send, to the N user equipments scheduled by the base station, the indication information, where the indication information is used to indicate an uplink transmission mode of the N user equipment, where the transmission mode includes a MIMO single input multiple output technology User SU mode or multi-user MU mode.

Optionally, the indication information is sent by using radio resource control RRC signaling.

Optionally, the RRC signaling includes a mode parameter, when the mode parameter is valid in the RRC signaling, the uplink transmission mode of the user equipment is the MU mode, and when the mode parameter is invalid in the RRC signaling, the corresponding user equipment The uplink transmission mode is SU mode.

Optionally, the device further includes a second sending module 804, where:

The second sending module 804 is configured to send downlink control information DCI to the N user equipments, where the DCI includes field values for indicating the codewords and OCCs corresponding to the N user equipments.

Optionally, after decoding the PTRS of the N user equipments according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC), the decoding module 802 is further configured to use the PTRS of each user equipment obtained after the decoding. , respectively, frequency offset estimation and phase noise estimation for each user equipment.

In the embodiment of the present invention, the preset time-frequency resource receives the PTRS of the N user equipments that are scheduled by the receiving module 801, and the first sending module 803 sends the indication information to the N user equipments scheduled by the base station, and passes the The second sending module 804 sends the DCI to the N user equipments, and the PTRSs of the N user equipments are decoded by the decoding module 802 according to the codewords and OCCs corresponding to the PTRSs of the N user equipments, and are obtained according to the decoding. The PTRS of each user equipment performs frequency offset estimation and phase noise estimation for each user equipment. It can be seen that the signal processing apparatus provided in the embodiment of the present invention implements resource multiplexing between PTRSs of multi-user equipments, and ensures the frequency of each user equipment. Bias estimation and phase noise estimation performance.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of a signal processing apparatus according to a second embodiment of the present invention. Specifically, the device includes a generating module 901 and a sending module 902. among them:

The generating module 901 is configured to generate a phase tracking reference signal PTRS based on the corresponding codeword and the orthogonal cover code OCC.

The sending module 902 is configured to send the PTRS to the base station on a preset time-frequency resource.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, and the sending module 902 maps the PTRS to two different groups. On the time-frequency resource on the subcarrier.

Optionally, before sending the PTRS to the base station on the preset time-frequency resource, the sending module 902 is further configured to determine, according to the indication information sent by the base station, an uplink transmission mode of the user equipment, where the transmission mode includes multiple input and multiple output. Technical MIMO single-user SU mode or multi-user MU mode.

Optionally, the indication information is obtained by using radio resource control RRC signaling sent by the base station.

Optionally, the device further includes a receiving module 903, where:

The receiving module 903 is configured to receive downlink control information (DCI) sent by the base station, where the DCI includes a field value for indicating a codeword and an OCC corresponding to the user equipment.

Optionally, the device further includes an obtaining module 904, where:

The obtaining module 904 is configured to obtain a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.

In the embodiment of the present invention, the receiving module 903 receives the DCI sent by the base station, and according to the DCI sent by the base station, acquires the codeword and OCC corresponding to the user equipment by using the acquiring module 904, and generates a module based on the corresponding codeword and OCC. The 901 generates a PTRS, and sends the PTRS to the base station by using the sending module 902 on the preset time-frequency resource. It can be seen that the embodiment of the present invention implements multiplexing of multi-user equipment PTRS.

Referring to FIG. 10, FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 10, the base station includes: at least one processor 1001, such as a CPU, at least one sending interface 1003, and a memory 1002. The sending interface 1003 may include a display and a keyboard. Optionally, the sending interface 1003 may further include a standard wired interface and a wireless interface. The memory 1004 may include a Volotile Memory, such as a Random Access Memory (RAM); the memory may also include a non-volatile memory. (Non-Volatile Memory), such as Read-Only Memory (ROM), Flash Memory, Hard Disk Drive (HDD), or Solid-State Drive (SSD); Combinations of the above types of memory may also be included. The memory 1002 can also optionally be at least one storage device located remotely from the processor 1001. The memory 1002 stores a set of program codes, and the processor 1001 calls the program code stored in the memory 1002 to perform the following operations:

Receiving, by a preset time-frequency resource, a phase tracking reference signal PTRS of its scheduled N user equipments through a communication interface; wherein N is a positive integer greater than one;

The PTRSs of the N user equipments are decoded according to the codewords corresponding to the PTRSs of the N user equipments and the orthogonal coverage coding (OCC); wherein the PTRSs of the N user equipments are orthogonal to each other based on the codewords.

Further, the processor 1001 is further configured to perform the following operations:

Sending indication information to the N user equipments scheduled by the base station by using the communication interface, where the indication information is used to indicate an uplink transmission mode of the N user equipments, where the transmission mode includes a single-user SU mode of multiple input multiple output technology MIMO or multiple User MU mode.

Specifically, the processor 1001 is configured to perform the following operations:

The downlink control information DCI is sent to the N user equipments through the communication interface, where the DCI includes field values for indicating the codewords and OCCs corresponding to the N user equipments.

Further, the processor 1001 is further configured to perform the following operations:

According to the PTRS of each user equipment obtained after decoding, frequency offset estimation and phase noise estimation are respectively performed on each user equipment.

In the embodiment of the present invention, the processor 1001 is configured to receive the PTRS of the N user equipments that are scheduled by the preset time-frequency resource through the communication interface, and the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage code OCC pair. The PTRS of the N user equipments is decoded. It can be seen that the base station provided in the embodiment of the present invention implements resource multiplexing between the multi-user PTRSs, and the PTRSs of the user equipments are orthogonal to ensure the frequency offset for the user equipment. And phase noise estimation performance.

Referring to FIG. 11, FIG. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 11, the user equipment includes: at least one processor 1101, such as a CPU, at least one receiving interface 1103, and a memory. 1102. The receiving interface 1103 can include a display, a keyboard, and optionally, the receiving interface 1103 can also include a standard wired interface and wireless. interface. The memory 1102 may include a volatile memory (Volatile Memory), such as a random access memory (RAM); the memory may also include a non-volatile memory (Non-Volatile Memory), such as a read-only memory (Read-Only). Memory, ROM, Flash Memory, Hard Disk Drive (HDD), or Solid-State Drive (SSD); the memory 1102 may also include a combination of the above types of memories. The memory 1102 can also optionally be at least one storage device located remotely from the aforementioned processor 1101. The memory 1102 stores a set of program codes, and the processor 1101 calls the program code stored in the memory 1102 to perform the following operations:

Generating a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coding OCC;

The PTRS is sent to the base station through the communication interface on the preset time-frequency resource.

Optionally, the preset time-frequency resource includes time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, where the processor 1101 is configured to map the PTRS to Time-frequency resources on the two different sets of subcarriers.

Optionally, the processor 1101 is further configured to:

The uplink transmission mode of the user equipment is determined according to the indication information sent by the base station, and the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.

Optionally, the processor 1101 is further configured to:

The downlink control information DCI sent by the base station is received by the communication interface, where the DCI includes a field value for indicating a codeword and an OCC corresponding to the user equipment.

Optionally, the processor 1101 is further configured to:

Obtain the codeword and OCC corresponding to the user equipment according to the DCI sent by the base station.

In the embodiment of the present invention, the user equipment generates a PTRS based on the corresponding codeword and the orthogonal coverage coding (OCC), and sends the PTRS to the base station through the communication interface on the preset time-frequency resource. It can be seen that the user equipment provided in the embodiment of the present invention implements resource multiplexing between multi-user PTRSs.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A skilled person can use different methods to implement the described functions for each particular application, but such implementation should not be considered as an extension of the present invention. Wai.

Claims (35)

1. A signal processing method, comprising:

   The base station receives the phase tracking reference signal PTRS of its scheduled N user equipments in a preset time-frequency resource; where N is a positive integer greater than one;

   Decoding, by the base station, the PTRSs of the N user equipments according to the codewords corresponding to the PTRSs of the N user equipments and the orthogonal coverage coding (OCC); wherein the PTRSs of the N user equipments are based on the codewords and the OCCs. Orthogonal.
2. The method according to claim 1, wherein the preset time-frequency resource comprises time-frequency resources on two different sub-carriers, and each group of sub-carriers comprises at least four minimum resource units RE, two groups. The PTRSs of the N user equipments are carried on the time-frequency resources of the different sub-carriers, and the PTRS of each user equipment is mapped to the time-frequency resources on the two different sub-carriers.
3. The method of claim 1 further comprising:

   The base station sends the indication information to the N user equipments scheduled by the base station, where the indication information is used to indicate the uplink transmission mode of the N user equipments, where the transmission mode includes a single-user SU of multiple input multiple output technology MIMO Mode or multi-user MU mode.
4. The method according to claim 3, wherein the indication information is sent by radio resource control RRC signaling.
5. The method according to claim 3, wherein the RRC signaling includes a mode parameter, when the mode parameter in the RRC signaling is valid, the uplink transmission mode of the corresponding user equipment is the MU mode, when When the mode parameter in the RRC signaling is invalid, the uplink transmission mode of the corresponding user equipment is the SU mode.
6. The method of claim 1 further comprising:

   The base station sends downlink control information DCI to the N user equipments, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the N user equipments.
7. The method according to claim 1, wherein after the base station decodes the PTRSs of the N user equipments according to the codewords corresponding to the PTRSs of the N user equipments and the orthogonal coverage coding (OCC), the base station includes:

   The base station performs frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.
8. A signal processing method, comprising:

   The user equipment generates a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coding OCC;

   The user equipment sends the PTRS to the base station on a preset time-frequency resource.
9. The method according to claim 8, wherein the preset time-frequency resource comprises time-frequency resources on two different sub-carriers, and each group of sub-carriers comprises at least four minimum resource units RE, The PTRS of the user equipment is mapped to time-frequency resources on the two different sets of subcarriers.
10. The method according to claim 8, wherein before the user equipment sends the PTRS to the base station on the preset time-frequency resource, the method includes:

    The user equipment determines, according to the indication information sent by the base station, a transmission mode of the uplink of the user equipment, where the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.
11. The method according to claim 10, wherein the indication information is obtained by radio resource control RRC signaling sent by the base station.
12. The method of claim 11 further comprising:

    The user equipment receives the downlink control information DCI sent by the base station, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the user equipment.
13. The method of claim 12, further comprising:

    The user equipment acquires a codeword and an OCC corresponding to the user equipment according to the DCI sent by the base station.
14. A signal processing device, comprising:

    a receiving module, configured to receive, by using a preset time-frequency resource, a phase tracking reference signal PTRS of the N user equipments that are scheduled; wherein, N is a positive integer greater than one;

    a decoding module, configured to decode, according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coded OCC, the PTRSs of the N user equipments, where the PTRSs of the N user equipments are based on the code Words and OCC are orthogonal to each other.
15. The apparatus according to claim 14, wherein the preset time-frequency resource comprises time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, two groups. The PTRSs of the N user equipments are carried on the time-frequency resources of the different sub-carriers, and the PTRS of each user equipment is mapped to the time-frequency resources on the two different sub-carriers.
16. The device according to claim 14, further comprising:

    a first sending module, configured to send indication information to the N user equipments scheduled by the base station, where the indication information is used to indicate an uplink transmission mode of the N user equipment, where the transmission mode includes multiple input multiple output technology MIMO Single-user SU mode or multi-user MU mode.
17. The apparatus according to claim 16, wherein the indication information is sent by radio resource control RRC signaling.
18. The apparatus according to claim 16, wherein the RRC signaling includes a mode parameter, when the mode parameter in the RRC signaling is valid, the uplink transmission mode of the corresponding user equipment is the MU mode, when When the mode parameter in the RRC signaling is invalid, the uplink transmission mode of the corresponding user equipment is the SU mode.
19. The device according to claim 14, further comprising:

    a second sending module, configured to send downlink control information DCI to the N user equipments, where A field value for indicating a codeword and an OCC corresponding to the N user equipments is included in the DCI.
20. The apparatus according to claim 14, wherein the decoding module decodes the PTRSs of the N user equipments according to the codewords corresponding to the PTRSs of the N user equipments and the orthogonal coverage coding (OCC), Also used for:

    According to the PTRS of each user equipment obtained after decoding, frequency offset estimation and phase noise estimation are respectively performed on each user equipment.
21. A signal processing device, comprising:

    Generating a module, configured to generate a phase tracking reference signal PTRS based on its corresponding codeword and orthogonal cover coding OCC;

    And a sending module, configured to send the PTRS to the base station on a preset time-frequency resource.
22. The device according to claim 21, wherein the preset time-frequency resource comprises time-frequency resources on two different sub-carriers, and each group of sub-carriers comprises at least four minimum resource units RE, The transmitting module maps the PTRS to time-frequency resources on the two different sets of subcarriers.
23. The device according to claim 21 or 22, wherein the sending module sends the PTRS to the base station on a preset time-frequency resource, and is further configured to:

    Determining, according to the indication information sent by the base station, a transmission mode of the uplink of the user equipment, where the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.
24. The apparatus according to claim 23, wherein the indication information is obtained by radio resource control RRC signaling sent by the base station.
25. The device according to claim 23, further comprising:

    The receiving module is configured to receive the downlink control information DCI sent by the base station, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the user equipment.
26. The device according to claim 25, further comprising:

    And an acquiring module, configured to acquire, according to the DCI sent by the base station, a codeword and an OCC corresponding to the user equipment.
27. A base station, comprising: a processor, a communication interface, configured to: receive, by a preset time-frequency resource, a phase tracking reference signal PTRS of the N user equipments that are scheduled by the communication interface; N is a positive integer greater than 1; the PTRS of the N user equipments is decoded according to the codeword corresponding to the PTRS of the N user equipments and the orthogonal coverage coding (OCC); wherein the PTRS of the N user equipments The codeword and the OCC are orthogonal to each other based on the codeword.
28. The base station according to claim 27, characterized in that

    The processor is further configured to send, by using a communication interface, the indication information to the N user equipments that are scheduled by the base station, where the indication information is used to indicate an uplink transmission mode of the N user equipments, where the transmission mode includes multiple inputs. Multi-output technology MIMO single-user SU mode or multi-user MU mode.
29. The base station according to claim 27, characterized in that

    The processor is further configured to send downlink control information DCI to the N user equipments by using a communication interface, where the DCI includes field values for indicating codewords and OCCs corresponding to the N user equipments.
30. The base station according to claim 27, characterized in that

    The processor is further configured to perform frequency offset estimation and phase noise estimation on each user equipment according to the PTRS of each user equipment obtained after decoding.
31. A user equipment, comprising: a processor, a communication interface, configured to: generate a phase tracking reference signal PTRS based on a corresponding codeword and orthogonal overlay coding OCC; at a preset time frequency The PTRS is sent to the base station through a communication interface.
32. The user equipment according to claim 31, wherein the preset time-frequency resource comprises time-frequency resources on two different sub-carriers, and each group of sub-carriers includes at least four minimum resource units RE, The processor is configured to map the PTRS to time-frequency resources on the two different sets of subcarriers on.
33. User equipment according to claim 31 or 32, characterized in that

    The processor is further configured to determine, according to the indication information sent by the base station, a transmission mode of the uplink of the user equipment, where the transmission mode includes a single-user SU mode or a multi-user MU mode of multiple input multiple output technology MIMO.
34. A user equipment according to claim 33, wherein

    The processor is further configured to receive, by using a communication interface, downlink control information (DCI) sent by the base station, where the DCI includes a field value, where the field value is used to indicate a codeword and an OCC corresponding to the user equipment.
35. User equipment according to claim 34, characterized in that

    The processor is further configured to obtain, according to the DCI sent by the base station, a codeword and an OCC corresponding to the user equipment.

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