CN116419242A

CN116419242A - Method for configuring uplink additional pilot frequency and related device

Info

Publication number: CN116419242A
Application number: CN202210007866.XA
Authority: CN
Inventors: 吴捡波; 王小康; 谭婷; 汪波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2023-07-11

Abstract

The embodiment of the invention discloses a method for configuring uplink additional pilot frequency and a related device, which are characterized in that the method is applied to network equipment, and comprises the following steps: receiving a first pilot signal sent by terminal equipment; performing channel detection on an uplink shared physical channel (PUSCH) for communicating the network equipment and the terminal equipment according to the first pilot signal to obtain PUSCH channel state information; determining an additional pilot frequency configuration period based on the PUSCH state information, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency; and sending the additional pilot frequency configuration period to the terminal equipment. The embodiment of the invention can reduce the overhead of the PUSCH resource and improve the utilization rate of the PUSCH resource.

Description

Method for configuring uplink additional pilot frequency and related device

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method for configuring uplink additional pilot and a related device.

Background

A Reference Signal (RS), which is a so-called pilot Signal, is a known Signal provided by a transmitting end to a receiving end for channel estimation or channel sounding. In a wireless communication system, because a wireless channel is a fading channel, high-speed movement of a user can cause faster time domain channel transformation and generate time selective fading; and multipath effects can cause frequency domain selective fading. Therefore, when the network device communicates with the terminal device, a demodulation reference signal (Demodulation Reference Signal, DMRS) needs to be inserted into an uplink shared physical CHannel (Physical Uplink Share CHannel, PUSCH), so as to track and estimate the data CHannel (i.e., a CHannel estimation technique). In the time-frequency Resource of the wireless communication system, the pilot signal is in units of Resource Elements (REs), and one pilot symbol occupies one RE on the time-frequency Resource, that is, one subcarrier in the frequency domain and one OFDM symbol in the time domain.

In the channel estimation technology, the network device configures an OFDM symbol bearing preamble pilot (which may also be referred to as a preamble DMRS) at a position forward of the PUSCH, so that the network device can perform operations such as user detection and channel estimation as soon as possible, and reduce the demodulation delay. Meanwhile, in order to support the high-speed scene, an additional pilot frequency (also referred to as an additional DMRS) may be configured on the basis of the preamble pilot frequency, and the additional pilot frequency and the preamble pilot frequency are generated in the same manner. In one slot, the OFDM symbol where the additional pilot is located is typically located after the OFDM symbol of the preamble pilot, and the additional pilot may be used to improve the performance of channel estimation. However, in the prior art, when the additional pilot is configured for different time slots, if the additional pilot is configured for the first time slot, all the later time slots will be configured with the additional pilot at the same position, but the network device can selectively analyze the additional pilot signal in each time slot according to the actual situation after receiving the signal. If the channel condition is relatively good, the network device may choose not to analyze the additional pilot frequency in some time slots, and in this process, the signal sent by the terminal device to the network device may carry some invalid additional pilot frequency information, thereby causing resource waste and increasing resource overhead.

Therefore, how to provide a method for configuring uplink additional pilot to reduce the resource overhead and improve the resource utilization is a problem to be solved.

Disclosure of Invention

The technical problem to be solved by the embodiment of the invention is to provide a method and a related device for configuring uplink additional pilot frequency, so as to reduce resource overhead and improve resource utilization rate.

In a first aspect, an embodiment of the present invention provides a method for configuring an uplink additional pilot, which is applied to a network device, where the method includes: receiving a first pilot signal sent by terminal equipment; performing channel detection on an uplink shared physical channel (PUSCH) for communicating the network equipment and the terminal equipment according to the first pilot signal to obtain PUSCH channel state information; determining an additional pilot frequency configuration period based on the PUSCH state information, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency; and sending the additional pilot frequency configuration period to the terminal equipment.

In the prior art, when additional pilots are configured for different time slots, the additional pilots are configured in a continuous configuration, i.e. as long as the additional pilots are configured for the first time slot, all the time slots in the back are configured with additional pilots. It follows that as soon as the terminal device receives the additional pilot configuration request sent by the network device, the additional pilot is configured in each time slot when the signal is sent. However, after receiving the signal, the network device may selectively analyze the additional pilots in different time slots according to the actual situation, for example, when the channel condition is poor, the network device may analyze the additional pilots in each time slot; when the channel condition is relatively good, the network device can selectively analyze only the additional pilot frequency in part of the time slots, so that the signal sent by the terminal device to the network device in the scene carries some additional pilot frequencies which are not used by the network device, namely, the additional pilot frequencies are equivalent to invalid additional pilot frequencies, thereby causing resource waste and increasing resource overhead.

In the embodiment of the invention, the network equipment determines the configuration period of the additional pilot frequency, so that when the terminal equipment configures the additional pilot frequency for different time slots, the additional pilot frequency is configured in a periodic configuration mode, namely, the additional pilot frequency on different time slots is configured at a certain time interval. Specifically, the network device may detect the current channel state based on the pilot signal transmitted by the terminal device, and determine the additional pilot configuration period based on the detection result. The additional pilot configuration period may then be included in the additional pilot configuration information sent by the network device to the terminal device. Further, the terminal device can configure the additional pilot frequency based on the additional pilot frequency configuration period, that is, configure the additional pilot frequency on different time slots at a certain time interval (no additional pilot frequency is configured on the time slots included in the time interval), so that the problem that the resource expense is reduced and the resource utilization rate is improved because the terminal device cannot learn the current channel state and can only configure the additional pilot frequency in a continuous form (that is, each time slot is configured with the additional pilot frequency), so that some invalid additional pilot frequency is carried in part of the time slots, which results in the resource waste and the resource expense increase is avoided.

In a possible implementation manner, the performing channel detection on the PUSCH of the uplink shared physical channel that communicates with the network device and the terminal device according to the first pilot signal, to obtain PUSCH channel status information includes: and carrying out frequency offset analysis, baseband load analysis and interference intensity analysis based on the first pilot signal to obtain the PUSCH channel state information, wherein the PUSCH channel state information comprises one or more of frequency offset, baseband load utilization rate and noise interference intensity of the PUSCH.

In the embodiment of the invention, the pilot signal is a known signal provided by the terminal device to the network device for channel estimation or channel sounding. In a wireless communication system, because a PUSCH channel is a fading channel, high-speed movement of a user can cause faster time domain channel transformation and generate time selective fading; and multipath effects can cause frequency domain selective fading. Therefore, the network device can perform frequency offset analysis, baseband load analysis and interference strength analysis on the PUSCH channel based on the known pilot signal and the received pilot signal to obtain the current PUSCH channel state, so as to determine the additional pilot configuration period, thereby reducing the resource overhead and improving the resource utilization rate.

In a possible implementation manner, the PUSCH channel status information includes the frequency offset of the PUSCH; the larger the frequency offset, the smaller the additional pilot configuration period.

In the embodiment of the invention, the larger the frequency offset of the PUSCH is, the worse the current channel state is represented. In this scenario, if the additional pilot frequency configuration period is smaller, the time interval between any two slots where additional pilot frequencies need to be configured is shorter, and thus the network device can perform channel estimation on the PUSCH channel based on more additional pilot frequency information. The smaller the frequency offset of PUSCH, the better the representation of the current channel state. In this scenario, if the configuration period of the additional pilot frequency is larger, the time interval between any two time slots needing to be configured with the additional pilot frequency is longer, so that the additional pilot frequency is not configured on the time slots included in the time interval, the number of time slots for the additional pilot frequency which is not configured is reduced, thereby reducing the resource overhead and improving the resource utilization rate.

In one possible implementation, the PUSCH channel status information includes the baseband load utilization of the PUSCH; the higher the baseband load utilization, the greater the additional pilot configuration period.

In the embodiment of the invention, the higher the baseband load utilization rate of the PUSCH, the more data the current base station needs to process, and the more limited the processing capacity of the base station. In this scenario, if the configuration period of the additional pilot frequency is larger, the longer the time interval between any two time slots needing to configure the additional pilot frequency is, because no additional pilot frequency is configured on the time slots included in the time interval, the number of time slots for configuring the additional pilot frequency which is invalid is reduced, the data volume required to be processed by the base station is reduced, and the processing consumption is saved.

In a possible implementation manner, the PUSCH channel status information includes the noise interference strength of the PUSCH; the greater the noise interference strength, the smaller the additional pilot configuration period.

In the embodiment of the invention, the larger the noise interference intensity of the PUSCH is, the worse the current channel state is represented. In this scenario, if the additional pilot frequency configuration period is smaller, the time interval between any two slots where additional pilot frequencies need to be configured is shorter, and thus the network device can perform channel estimation on the PUSCH channel based on more additional pilot frequency information. The smaller the noise interference strength of PUSCH, the better the representation of the current channel state. In this scenario, if the configuration period of the additional pilot frequency is larger, the time interval between any two time slots needing to be configured with the additional pilot frequency is longer, so that the additional pilot frequency is not configured on the time slots included in the time interval, the number of time slots for the additional pilot frequency which is not configured is reduced, thereby reducing the resource overhead and improving the resource utilization rate.

In one possible implementation manner, the sending the additional pilot configuration period to the terminal device includes: and sending the additional pilot frequency configuration period to the terminal equipment through Radio Resource Control (RRC) signaling.

In the embodiment of the invention, the network equipment can send the additional pilot frequency configuration period to the terminal equipment through the Radio Resource Control (RRC) signaling, so that the terminal equipment configures the additional pilot frequency according to the additional pilot frequency configuration period, thereby reducing the resource overhead and improving the resource utilization rate.

In one possible implementation, the method further includes: receiving a target signal and a second pilot signal sent by the terminal equipment, wherein the second pilot signal is a pilot signal configured by the terminal equipment based on the additional pilot period; demodulating the target signal based on the second pilot signal.

In the embodiment of the invention, the network equipment can perform channel estimation based on the target signal and the pilot signal (the pilot signal configured based on the pilot configuration period) sent by the terminal equipment, and decode the target signal, thereby reducing the resource overhead and improving the resource utilization rate.

In a second aspect, an embodiment of the present invention provides a method for configuring an uplink additional pilot, which is applied to a terminal device, and the method includes: transmitting a first pilot signal to a network device, wherein the first pilot signal is used for detecting the channel state of an uplink shared physical channel (PUSCH) which is used for communicating between the network device and the terminal; and receiving an additional pilot frequency configuration period sent by the network equipment, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency.

In the embodiment of the invention, the terminal equipment can send the pilot signal to the network equipment so that the network equipment can detect the current channel state based on the pilot signal and determine the additional pilot configuration period based on the detection result. Then, after the terminal device receives the additional pilot frequency configuration period sent by the network device, the additional pilot frequency can be configured based on the additional pilot frequency configuration period, that is, additional pilot frequencies on different time slots are configured at a certain time interval (no additional pilot frequency is configured on the time slots included in the time interval), so that the problem that the resource cost is reduced and the resource utilization rate is improved because the terminal device cannot learn the current channel state and can only configure the additional pilot frequencies in a continuous form (that is, the additional pilot frequency is configured on each time slot), so that some ineffective additional pilot frequencies are carried in part of the time slots, thereby causing the resource waste and the resource cost increase is avoided.

In one possible implementation, the method further includes: configuring a second pilot signal based on the additional pilot configuration period; and transmitting a target signal and the second pilot signal to the network equipment, wherein the second pilot signal is used for demodulating the target signal.

In the embodiment of the invention, the terminal equipment can configure the additional pilot frequency based on the additional pilot frequency configuration period, and when the terminal equipment sends data (target signal) to the network equipment, the additional pilot frequency is carried so as to facilitate the channel estimation of the network equipment and decode the target signal, thereby reducing the resource overhead and improving the resource utilization rate.

In a third aspect, an embodiment of the present invention provides an apparatus for configuring an uplink additional pilot, where the apparatus is applied to a network device, and the apparatus includes: a first receiving unit, configured to receive a first pilot signal sent by a terminal device; the first processing unit is used for carrying out channel detection on an uplink shared physical channel (PUSCH) for communicating the network equipment and the terminal equipment according to the first pilot signal to obtain PUSCH state information; a second processing unit, configured to determine an additional pilot configuration period based on the PUSCH channel status information, where the additional pilot configuration period is a time interval between two consecutive slots in which additional pilots need to be configured; and the first sending unit is used for sending the additional pilot frequency configuration period to the terminal equipment.

In a possible implementation manner, the first processing unit is specifically configured to: and carrying out frequency offset analysis, baseband load analysis and interference intensity analysis based on the first pilot signal to obtain the PUSCH channel state information, wherein the PUSCH channel state information comprises one or more of frequency offset, baseband load utilization rate and noise interference intensity of the PUSCH.

In one possible implementation manner, the first sending unit is specifically configured to: and sending the additional pilot frequency configuration period to the terminal equipment through Radio Resource Control (RRC) signaling.

In one possible implementation, the apparatus further includes: a second receiving unit, configured to receive a target signal and a second pilot signal sent by the terminal device, where the second pilot signal is a pilot signal configured by the terminal device based on the additional pilot period; and the third processing unit is used for demodulating the target signal based on the second pilot signal.

In a fourth aspect, an embodiment of the present invention provides an apparatus for configuring an uplink additional pilot, where the apparatus is applied to a terminal device, and the apparatus includes: a first sending unit, configured to send a first pilot signal to a network device, where the first pilot signal is used to detect a channel state of an uplink shared physical channel PUSCH that is used for communications between the network device and the terminal; and the first receiving unit is used for receiving the additional pilot frequency configuration period sent by the network equipment, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency.

In one possible implementation, the apparatus further includes: a second processing unit configured to configure a second pilot signal based on the additional pilot configuration period; and the second sending unit is used for sending a target signal and the second pilot signal to the network equipment, and the second pilot signal is used for demodulating the target signal.

In a fifth aspect, the present application provides a computer storage medium, wherein the computer storage medium stores a computer program, which when executed by a processor implements the method according to any one of the first aspects.

In a sixth aspect, the present application provides a computer storage medium, wherein the computer storage medium stores a computer program, which when executed by a processor implements the method according to any one of the second aspects.

In a seventh aspect, the present application provides a computer storage medium, wherein the computer storage medium stores a computer program, which when executed by a processor implements the method according to any one of the first aspects.

In an eighth aspect, the present application provides a computer storage medium, wherein the computer storage medium stores a computer program, which when executed by a processor implements the method according to any one of the second aspects.

In a ninth aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a processor configured to support the electronic device to implement a corresponding function in a method for configuring uplink additional pilots provided in the first aspect. The electronic device may also include a memory for coupling with the processor that holds the program instructions and data necessary for the electronic device. The electronic device may also include a communication interface for the electronic device to communicate with other devices or communication networks.

In a tenth aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a processor configured to support the electronic device to implement a corresponding function in a method for configuring uplink additional pilots provided in the second aspect. The electronic device may also include a memory for coupling with the processor that holds the program instructions and data necessary for the electronic device. The electronic device may also include a communication interface for the electronic device to communicate with other devices or communication networks.

In an eleventh aspect, the present application provides a chip system comprising a processor for supporting an electronic device to implement the functions referred to in the first aspect above, e.g. generating or processing information referred to in the method of configuring uplink additional pilots described above. In one possible design, the chip system further includes a memory to hold the necessary program instructions and data for the electronic device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a twelfth aspect, the present application provides a chip system, which includes a processor for supporting an electronic device to implement the functions involved in the second aspect, for example, generating or processing information involved in the method for configuring uplink additional pilots. In one possible design, the chip system further includes a memory to hold the necessary program instructions and data for the electronic device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

Drawings

Fig. 1A is a schematic diagram of DMRS single symbol time-frequency distribution according to an embodiment of the present invention.

Fig. 1B is a schematic diagram of a communication system according to an embodiment of the present invention.

Fig. 1C is a schematic diagram of a communication device according to an embodiment of the present invention.

Fig. 2A is a flow chart of a method for configuring uplink additional pilots in an embodiment of the present application.

Fig. 2B is a schematic diagram of an additional pilot configuration period according to an embodiment of the present invention.

Fig. 2C is a schematic diagram of an additional pilot and data symbol channel according to an embodiment of the present invention.

Fig. 2D is a schematic diagram of a procedure for adaptively configuring an additional pilot period according to an embodiment of the present invention.

Fig. 2E is a schematic diagram of data pilot co-symbol according to an embodiment of the present invention.

Fig. 3A is a schematic diagram of an apparatus for configuring uplink additional pilot according to an embodiment of the present application.

Fig. 3B is a schematic diagram of another apparatus for configuring uplink additional pilot according to the present application provided in the embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Some terms related to the embodiments of the present application will be briefly described below.

(1) In a new air interface (NR) communication system of the fifth generation (5th generation,5G) communication technology, 1 slot contains 14 OFDM symbols for a normal (normal) Cyclic Prefix (CP). For an extended (extended) CP,1 slot contains 12 OFDM symbols. For convenience of description, in the embodiment of the present application, 1 slot contains 14 OFDM symbols unless specifically described. The symbol is an OFDM symbol, for example, the starting symbol is the first OFDM symbol in the uplink shared physical CHannel (Physical Uplink Share CHannel, PUSCH), and the ending symbol is the last OFDM symbol in the PUSCH. In the slot, 14 OFDM symbols are numbered sequentially from smaller to larger, with the smallest number being 0 and the largest number being 13. For example, as shown in fig. 1A, fig. 1A is a schematic diagram of DMRS single symbol time-frequency distribution provided in an embodiment of the present invention, where the abscissa of (a), (b), (c), and (d) in the figure represents a slot, and the abscissa of each slot is divided into 14 parts (each part represents one OFDM symbol), that is, 1 slot contains 14 OFDM symbols.

(2) Demodulation reference signals (Demodulation Reference Signal, DMRS) for enabling demodulation of PUSCH. The DMRS is carried on part of the OFDM symbols in PUSCH. In addition, the network device configures an OFDM symbol bearer preamble (Front-load) DMRS of a PUSCH in a Front position, so that the network device can perform operations such as user detection and channel estimation as soon as possible, and reduce the demodulation delay.

(3) The pre-DMRS can be classified into two types according to Mapping types (Mapping Type) of PUSCH, that is, mapping Type a and Mapping Type B. For Mapping Type a, the pre-DMRS is located in the third OFDM symbol in the slot, or in the third OFDM symbol and the fourth OFDM symbol in the slot. For Mapping Type B, the pre-DMRS is located in the first OFDM symbol in PUSCH, or the first and second OFDM symbols in PUSCH. For example, if the time domain resource of PUSCH includes OFDM symbol #5 to OFDM symbol #12 in a slot, the preamble DMRS is located in OFDM symbol #5 in the slot, or OFDM symbol #5 and OFDM symbol #6 in the slot. For example, the first OFDM symbol in (a) of fig. 1A, the first OFDM symbol in (b) of fig. 1A, the first OFDM symbol in (c) of fig. 1A, and the first OFDM symbol in (d) of fig. 1A are all preamble DMRS (may also be referred to as preamble pilots).

In addition, the pre-DMRS may support multiple orthogonal DMRS ports by means of comb frequency division, time domain code division, frequency domain code division, cyclic Shift (CS), etc., for example, up to 4, 8, 6, or 12 orthogonal DMRS ports may be supported in the 3gpp r15 protocol. It will be appreciated that for multiple terminals sharing the same time-frequency resource, the network device may configure orthogonal DMRS for the terminals (e.g., configure different orthogonal DMRS ports) such that the network device identifies the different terminals by detecting the DMRS.

(4) Additional DMRS, in order to support a high-speed scenario, additional DMRS may also be configured on the basis of a pre-DMRS. The generation method of the additional DMRS is the same as that of the pre-DMRS. Additional DMRS, typically located after the pre-DMRS, may be used to improve the performance of channel estimation. For example, in R15, the currently-located DMRS is a single symbol, and additional DMRS of 1 to 3 symbols may be configured; when the pre-DMRS is two symbols, additional DMRS of 2 symbols may be configured. The additional DMRS is located specifically on which symbols of the slot or PUSCH and may be agreed upon by the network device configuration or protocol. For example, the 11 th OFDM symbol as in fig. 1A (b), the 6 th OFDM symbol and 11 th OFDM symbol as in fig. 1A (c), the 4 th OFDM symbol as in fig. 1A (d), the 7 th OFDM symbol, and the 10 th OFDM symbol are all additional DMRS (may also be referred to as additional pilots).

The technical scheme provided by the embodiment of the invention can be applied to various communication systems, such as a long term evolution (LongTerm Evolution, LTE) communication system, a new air interface (NR) communication system adopting a fifth generation (5th generation,5G) communication technology, a future evolution system or a plurality of communication fusion systems and the like. The technical scheme provided by the embodiment of the invention can be applied to various scenes, such as machine-to-machine (machine to machine, M2M), macro-micro communication, enhanced mobile internet (enhanced mobile broadband, eMBB), ultra-high reliability and ultra-low time delay communication (ultra-reliable & low latency communication, uRLLC), mass Internet of things communication (massive machinetype communication, mMTC) and the like. These scenarios may include, but are not limited to: a communication scenario between a communication device and a communication device, a communication scenario between a network device and a network device, a communication scenario between a network device and a communication device, etc. The following description will be given by taking as an example a communication scenario applied between a network device and a terminal.

Referring to fig. 1B, fig. 1B is a schematic diagram of a communication system according to an embodiment of the present invention, where the communication system may include one or more network devices (only 1 is shown in fig. 1B) and one or more terminals (only one is shown in fig. 1B) connected to each network device. Fig. 1B is only a schematic diagram, and does not constitute a limitation on the applicable scenario of the technical solution provided in the present application.

The network device may be a base station or a base station controller for wireless communication, etc. For example, the base stations may include various types of base stations, such as: micro base stations (also referred to as small stations), macro base stations, relay stations, access points, etc., as embodiments of the present application are not specifically limited. In the embodiment of the present application, the base station may be a base station (base transceiver station, BTS) in a global system for mobile communications (global system formobile communication, GSM), a base station (base transceiver station, BTS) in a code division multiple access (code division multiple access, CDMA), a base station (node B) in a wideband code division multiple access (wideband code division multipleaccess, WCDMA), an evolved base station (evolutional node B, eNB or e-NodeB) in LTE, an eNB in the internet of things (internet of things, ioT) or a narrowband internet of things (narrow band-internet ofthings, NB-IoT), a base station in a future 5G mobile communication network or a future evolved public land mobile network (publicland mobile network, PLMN), which is not limited in this embodiment of the present application.

And the terminal is used for providing voice and/or data connectivity services for the user. The terminals may be variously named, for example, user Equipment (UE), access terminals, terminal units, terminal stations, mobile stations, remote terminals, mobile devices, wireless communication devices, terminal agents or terminal apparatuses, and the like. Optionally, the terminal may be a handheld device, an in-vehicle device, a wearable device, or a computer with a communication function, which is not limited in the embodiments of the present application. For example, the handheld device may be a smart phone. The in-vehicle device may be an in-vehicle navigation system. The wearable device may be a smart bracelet, or a Virtual Reality (VR) device. The computer may be a personal digital assistant (personaldigital assistant, PDA) computer, a tablet computer, or a laptop computer (laptop computer).

In the communication system, when a network device communicates with a terminal, signals pass through one medium (referred to as a channel), and the signals are distorted or various noises are added to the signals as they pass through the channel. In order that the received signal does not have too many errors after decoding, the distortion and noise applied by the channel may be removed from the received signal. Specifically, a set of reference signals (i.e., signals known to the receiving end, such as DMRS) may be inserted into the communication signals of the transmitting end and the receiving end through a channel estimation technique (i.e., a technique for ascertaining the characteristics of the channel), where the reference signals are distorted (such as attenuation, phase shift, noise, etc.) together with the communication signals when passing through the channel, and after the receiving end receives the communication signals and the reference signals, the known reference signals and the received reference signals are compared first, and the correlation between them is found, so as to obtain the characteristics of the channel. Further, the receiving end can demodulate the received communication signal based on the characteristics of the channel to reduce the error rate of the signal.

The network device or terminal in fig. 1B may be implemented by the communication apparatus in fig. 1C. As shown in fig. 1C, fig. 1C is a schematic diagram of a communication device according to an embodiment of the present invention, where the communication device includes: at least one processor 101, communication lines 102, memory 103, and at least one communication interface 104.

The processor 101 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the present application.

Communication line 102 may include a pathway to transfer information between the aforementioned components.

The communication interface 104 uses any transceiver-like device for communicating with other devices or communication networks, such as ethernet, RAN, wireless local area network (wireless local area networks, WLAN), etc.

The memory 103 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (electricallyerasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be stand alone and be coupled to the processor via communication line 102. The memory may also be integrated with the processor. The memory provided by embodiments of the present application may generally have non-volatility. The memory 103 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled by the processor 101 to execute the instructions. The processor 101 is configured to execute computer-executable instructions stored in the memory 103, thereby implementing the methods provided in the embodiments described below.

Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a particular implementation, as one embodiment, processor 101 may include one or more CPUs, such as CPU0 and CPU1 of FIG. 1C.

In a particular implementation, as one embodiment, the communication device may include a plurality of processors, such as processor 101 and processor 107 in FIG. 1C. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In a specific implementation, as an embodiment, the communication apparatus may further include an output device 105 and an input device 106. The output device 105 communicates with the processor 101 and may display information in a variety of ways. For example, the output device 105 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like. The input device 106 is in communication with the processor 101 and may receive user input in a variety of ways. For example, the input device 106 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

The following describes the architecture of a specific method on which the embodiments of the present invention are based.

Referring to fig. 2A, fig. 2A is a flowchart of a method for configuring uplink additional pilots in the embodiment of the present application, and a method for configuring uplink additional pilots in the embodiment of the present application will be described below with reference to fig. 2A and based on the communication system in fig. 1B described above from the interaction side of the network device and the terminal device. It should be noted that, in order to describe the uplink additional pilot configuration method in the embodiment of the present application in more detail, the present application describes that the corresponding execution body is a network device or a terminal device in each flow step, but does not represent that the embodiment of the present application can only perform the corresponding method flow through the described execution body.

Step S201: the terminal device transmits a first pilot signal to the network device.

Specifically, the network device receives a first pilot signal sent by the terminal device. The pilot signal is a known signal provided by the terminal device to the network device for channel estimation or channel sounding. The first pilot signal may be a pilot signal generated by the terminal device according to a default configuration in an initial stage, where the first pilot signal is used to detect a channel state of an uplink shared physical channel PUSCH used for communication between the network device and the terminal.

Step S202: and the network equipment carries out channel detection on an uplink shared physical channel (PUSCH) for communicating the network equipment and the terminal equipment according to the first pilot signal to obtain PUSCH channel state information.

Specifically, when the uplink shared physical channel PUSCH is a channel through which a signal passes when the terminal device sends data to the network device, the channel is not fixed and predictable like a wired channel, but has great randomness, the channel is a fading channel, and the high-speed movement of a user can cause faster time domain channel transformation and generate time selective fading; and multipath effects can cause frequency domain selective fading. Channel detection may be understood as analyzing the current channel state based on the pilot signal, to obtain some characteristics of the current PUSCH channel, thereby obtaining PUSCH channel state information.

Step S203: the network device determines an additional pilot configuration period based on the PUSCH channel state information.

Specifically, the additional pilot configuration period is a time interval between two consecutive slots in which additional pilots need to be configured. The additional pilot configuration period is determined based on the current channel state, so that when additional pilots on different time slots are configured, the additional pilots can be configured at a certain time interval (the additional pilot configuration period), and it is also understood that the additional pilots are not configured on the time slots included in the time interval (i.e., the additional pilots are not configured on the time slots separated between any two time slots needing to be configured with the additional pilots). For example, as shown in fig. 2B, fig. 2B is a schematic diagram of an additional pilot configuration period provided in the embodiment of the present invention, in which, assuming that two slots are included in a time interval (one additional pilot configuration period) between two consecutive slots in which additional pilots are to be configured, the additional pilots are configured with the two slots as an interval, that is, the first slot is configured with the additional pilots, then the additional pilots may not be configured on the next two slots, for example, the second slot and the third slot are not configured with the additional pilots, then the additional pilots are configured on the fourth slot, and so on. In the prior art, as long as the additional pilot frequency is configured on the first time slot, the additional pilot frequency is configured on all subsequent time slots, that is, the additional pilot frequency is configured on the second time slot and the third time slot, and after the network device receives the signal, the additional pilot frequency in different time slots can be selectively analyzed according to practical situations, for example, when the channel condition is relatively good, the network device can selectively analyze only the additional pilot frequency in part of the time slots, for example, only the additional pilot frequency on the first time slot is analyzed, then in this scenario, the signal sent by the terminal device to the network device will carry some additional pilot frequencies which are not used by the network device, that is, additional pilot frequencies which are invalid, for example, the additional pilot frequencies carried on the second time slot and the third time slot are invalid, thereby causing resource waste and increasing resource overhead.

In addition, the number of additional pilots configured in each time slot may be determined by the protocol or the network device, and the preamble pilot may be configured or may not be configured in each time slot, which is not limited herein.

Step S204: and the network equipment sends the additional pilot frequency configuration period to the terminal equipment.

Specifically, the network device sends the additional pilot frequency configuration period determined based on the channel state to the terminal device, so that the terminal device can configure the additional pilot frequency based on the additional pilot frequency configuration period, which avoids the problems that the terminal device cannot know the current channel state and can only configure the additional pilot frequency in a continuous form (namely, each time slot configures the additional pilot frequency), so that a part of time slots carry some invalid additional pilot frequencies, thereby causing resource waste and resource overhead increase, and further reducing the resource overhead and improving the resource utilization rate.

Step S205: and the terminal equipment receives the additional pilot frequency configuration period sent by the network equipment.

Specifically, the terminal device receives the additional pilot frequency configuration period sent by the network device, and then, the additional pilot frequency can be configured based on the additional pilot frequency configuration period, so that the problem that the resource expense is reduced and the resource utilization rate is improved because the terminal device cannot know the current channel state and can only configure the additional pilot frequency in a continuous mode (namely, each time slot is configured with the additional pilot frequency), and a part of invalid additional pilot frequencies are carried in part of time slots, which results in resource waste and resource expense increase is avoided.

In a possible implementation manner, the network device performs channel detection on an uplink shared physical channel PUSCH for communication between the network device and the terminal device according to the first pilot signal, to obtain PUSCH channel status information, including: and the network equipment performs frequency offset analysis, baseband load analysis and interference intensity analysis based on the first pilot signal to obtain the PUSCH channel state information, wherein the PUSCH channel state information comprises one or more of frequency offset, baseband load utilization rate and noise interference intensity of the PUSCH. Specifically, the pilot signal is a known signal provided by the network device to the terminal device for channel estimation or channel sounding. In a wireless communication system, because a PUSCH channel is a fading channel, high-speed movement of a user can cause faster time domain channel transformation and generate time selective fading; and multipath effects can cause frequency domain selective fading. Therefore, the network device can perform frequency offset analysis, baseband load analysis and interference strength analysis on the PUSCH channel based on the known pilot signal and the received pilot signal to obtain the current PUSCH channel state, so as to determine the additional pilot configuration period, thereby reducing the resource overhead and improving the resource utilization rate.

In a possible implementation manner, the PUSCH channel status information includes the frequency offset of the PUSCH; the larger the frequency offset, the smaller the additional pilot configuration period. Specifically, the larger the frequency offset of PUSCH, the worse the current channel state is represented. In this scenario, if the additional pilot frequency configuration period is smaller, the time interval between any two slots where additional pilot frequencies need to be configured is shorter, and thus the network device can perform channel estimation on the PUSCH channel based on more additional pilot frequency information. The smaller the frequency offset of PUSCH, the better the representation of the current channel state. In this scenario, if the configuration period of the additional pilot frequency is larger, the time interval between any two time slots needing to be configured with the additional pilot frequency is longer, so that the additional pilot frequency is not configured on the time slots included in the time interval, the number of time slots for the additional pilot frequency which is not configured is reduced, thereby reducing the resource overhead and improving the resource utilization rate.

The frequency offset of the terminal equipment is composed of crystal oscillator frequency offset and Doppler frequency offset. The crystal oscillator frequency offset is determined by terminal hardware, the Doppler frequency offset is related to the moving speed of the terminal, and the larger the speed is, the larger the Doppler frequency offset is. Next, an embodiment of the present invention will be described with reference to fig. 2C, where fig. 2C is a schematic diagram of an additional pilot frequency and a data symbol channel provided in the embodiment of the present invention, and when the terminal device does not configure the additional pilot frequency, it is necessary to push the estimation result of the pre-pilot frequency channel to other data symbols, and if the frequency offset is larger, at this time, a larger error exists between the channel values H of the pre-pilot frequency and the subsequent data symbol positions, which affects data demodulation. At this time, additional pilots need to be configured, channel estimation is performed on the pre-pilot and the additional pilots respectively, interpolation is performed on the data symbol channels in the middle, accurate channel estimation results are obtained, and the subsequent data demodulation performance is improved. Alternatively, assume that the terminal crystal oscillator frequency offset is f ₀ The Doppler frequency offset is f when the speed is v _d (v) Then the overall frequency offset f=f ₀ +f _d (v) A. The invention relates to a method for producing a fibre-reinforced plastic composite When the crystal oscillator frequency offset is calculated, firstly, calculating the correlation rho (t) of the user twice in succession at the moment t, and if rho (t)>ρ _Threse ，ρ _Threse Is a preset value and is reported by frequency offset at the moment, the reported value is assigned to f ₀ If ρ (t)<ρ _Threse And no frequency offset value is reported at this moment, the previous f is maintained ₀ . When Doppler frequency offset calculation is carried out, firstly, the correlation rho (t) of a user at the moment t is calculated twice continuously, and the Doppler frequency offset is f _d (v) K ρ (t), k is a configurable parameter. During frequency offset gear selection, a frequency offset and additional pilot frequency period quantization gear table g can be constructed, and then according to f ₀ And ρ (t), an additional pilot shift g (f) ₀ +kρ (t)), where k is a configurable parameter. Further, it can self-adjust according to frequency offsetAdapting to adjust the period of the additional pilot frequency, configuring the long-period additional pilot frequency when the frequency offset is smaller (i.e. the longer the interval time between the time slots configuring the additional pilot frequency), and configuring the short-period additional pilot frequency when the frequency offset is larger (i.e. the shorter the interval time between the time slots configuring the additional pilot frequency).

In one possible implementation, the PUSCH channel status information includes the baseband load utilization of the PUSCH; the higher the baseband load utilization, the greater the additional pilot configuration period. Specifically, the higher the baseband load utilization of PUSCH, the more data that represents the current base station needs to process, and the more limited the processing capability of the base station. In this scenario, if the configuration period of the additional pilot frequency is larger, the longer the time interval between any two time slots needing to configure the additional pilot frequency is, because no additional pilot frequency is configured on the time slots included in the time interval, the number of time slots for configuring the additional pilot frequency which is invalid is reduced, the data volume required to be processed by the base station is reduced, and the processing consumption is saved.

After receiving the data sent by the terminal, the base station may calculate the utilization rate of the real-time physical resource block (Physical resource block, PRB), divide the gear according to the PRB utilization rate, configure the long-period additional pilot frequency with the high-gear PRB utilization rate, and configure the short-period additional pilot frequency with the low-gear PRB utilization rate. Optionally, constructing a frequency offset and an additional pilot frequency period quantization gear table f, and then calculating the PRB utilization rate PRB _rate Outputting PRB _rate Lower additional pilot frequency shift f (PRB _rate ). Further, the additional pilot frequency period can be adjusted according to the PRB utilization rate, and the longer the interval time between the time slots of the additional pilot frequency is configured when the PRB utilization rate is high, the resource overhead is saved.

In a possible implementation manner, the PUSCH channel status information includes the noise interference strength of the PUSCH; the greater the noise interference strength, the smaller the additional pilot configuration period. Specifically, the greater the noise interference strength of PUSCH, the worse the current channel state is represented. In this scenario, if the additional pilot frequency configuration period is smaller, the time interval between any two slots where additional pilot frequencies need to be configured is shorter, and thus the network device can perform channel estimation on the PUSCH channel based on more additional pilot frequency information. The smaller the noise interference strength of PUSCH, the better the representation of the current channel state. In this scenario, if the configuration period of the additional pilot frequency is larger, the time interval between any two time slots needing to be configured with the additional pilot frequency is longer, so that the additional pilot frequency is not configured on the time slots included in the time interval, the number of time slots for the additional pilot frequency which is not configured is reduced, thereby reducing the resource overhead and improving the resource utilization rate.

After receiving the data sent by the terminal device, the network device performs channel estimation on the preamble pilot, calculates the user interference intensity (Noise and Interference, NI), configures the short-period additional pilot under high interference, and configures the long-period additional pilot under low interference. Optionally, an interference intensity and additional pilot frequency period quantization gear table h is constructed, then the terminal interference intensity NI is calculated, and an additional pilot frequency gear h (NI) under interference is output. Furthermore, the period of the additional pilot frequency can be adjusted in a self-adaptive mode according to the interference level of the terminal equipment, the long-period additional pilot frequency is configured when the interference is small, and the short-period additional pilot frequency is configured when the interference is large.

For example, as shown in fig. 2D, fig. 2D is a schematic flow chart of an adaptive configuration additional pilot period provided in an embodiment of the present invention, where in an initial stage, a terminal device generates pilot information according to a default configuration and sends data to a base station (i.e., a network device). It should be noted that, in the pilot information generated by default configuration of the terminal device in the initial stage, additional pilots may be configured by default for each PUSCH subframe. The base station side can carry out load detection, frequency offset detection and interference intensity detection after receiving the data, and determines the period of the additional pilot frequency according to the detection result. It should be noted that, according to the detected PRB utilization, frequency offset and interference information, an additional pilot frequency period gear can be configured, and when the PRB utilization is high, the longer the interval time between the slots of the additional pilot frequency is configured, the resource overhead is saved; configuring long-period additional pilot frequency when the frequency offset is smaller (i.e. the longer the interval time between the time slots configuring the additional pilot frequency), and configuring short-period additional pilot frequency when the frequency offset is larger (i.e. the shorter the interval time between the time slots configuring the additional pilot frequency); the long-period additional pilot frequency is configured when the interference is small, and the short-period additional pilot frequency is configured when the interference is large. Further, the base station side may transmit an additional pilot configuration period to the terminal through an RRC command.

In one possible implementation, the network device sending the additional pilot configuration period to the terminal device includes: and the network equipment sends the additional pilot frequency configuration period to the terminal equipment through Radio Resource Control (RRC) signaling. Specifically, the network device may send an additional pilot configuration period to the terminal device through radio resource control RRC signaling, so that the terminal device configures the additional pilot according to the additional pilot configuration period, thereby reducing resource overhead and improving resource utilization.

In one possible implementation, the method further includes: the network equipment receives a target signal and a second pilot signal sent by the terminal equipment, wherein the second pilot signal is a pilot signal configured by the terminal equipment based on the additional pilot period; demodulating the target signal based on the second pilot signal. Specifically, the network device may perform channel estimation based on the target signal and the pilot signal (pilot signal configured based on the pilot configuration period) sent by the terminal device, and decode the target signal, thereby reducing resource overhead and improving resource utilization.

In one possible implementation, the method further includes: the terminal equipment configures a second pilot signal based on the additional pilot configuration period; and transmitting a target signal and the second pilot signal to the network equipment, wherein the second pilot signal is used for demodulating the target signal. Specifically, the terminal device may configure the additional pilots based on the additional pilot configuration period, and when the terminal device sends data (target signals) to the network device, the additional pilots are carried, so that the network device performs channel estimation and decodes the target signals, thereby reducing resource overhead and improving resource utilization.

It should be noted that, referring to fig. 2E, fig. 2E is a schematic diagram of a data pilot co-symbol provided by an embodiment of the present invention, in which the data pilot co-symbol is divided into frequency domains of OFDM symbols, target data is carried on a part of Resource Blocks (RBs), and additional pilots are carried on another part of RBs, and since the current protocol specifies that the transmission Resource Block capacity of each RB does not exceed 156 Resource Elements (REs) at maximum, when the data pilot co-symbol, a single RB has 156 REs, and the additional pilots are configured periodically, so that demodulation gain caused by code rate reduction can be obtained. In addition, in a data pilot non-co-symbol scenario, additional pilots are periodically configured, at which time resource gains may be obtained.

In the embodiment of the invention, the network equipment determines the configuration period of the additional pilot frequency, so that when the terminal equipment configures the additional pilot frequency aiming at different time slots, the additional pilot frequency is configured in a periodic configuration mode, namely, the additional pilot frequency on different time slots is configured at a certain time interval, thereby avoiding the problems that the terminal equipment cannot know the current channel state and can only configure the additional pilot frequency in a continuous mode, so that a part of time slots carry some invalid additional pilot frequencies, thereby causing the waste of resources and increasing the resource cost, and further reducing the resource cost and improving the resource utilization rate.

The foregoing details the method according to the embodiments of the present invention, and the following provides relevant apparatuses according to the embodiments of the present invention.

Referring to fig. 3A, fig. 3A is a schematic diagram of an apparatus for configuring uplink additional pilot, which is provided in the present application and applied to a network device, where the apparatus for configuring uplink additional pilot 30 may include a first receiving unit 301, a first processing unit 302, a second processing unit 303, a first transmitting unit 304, a second receiving unit 305, and a third processing unit 306, where detailed descriptions of the respective modules are as follows.

A first receiving unit 301, configured to receive a first pilot signal sent by a terminal device.

A first processing unit 302, configured to perform channel detection on an uplink shared physical channel PUSCH for communicating between the network device and the terminal device according to the first pilot signal, to obtain PUSCH channel status information.

The second processing unit 303 is configured to determine an additional pilot configuration period based on the PUSCH channel status information, where the additional pilot configuration period is a time interval between two consecutive slots in which additional pilots need to be configured.

A first transmitting unit 304, configured to transmit the additional pilot configuration period to the terminal device.

In one possible implementation manner, the first processing unit 302 is specifically configured to: and carrying out frequency offset analysis, baseband load analysis and interference intensity analysis based on the first pilot signal to obtain the PUSCH channel state information, wherein the PUSCH channel state information comprises one or more of frequency offset, baseband load utilization rate and noise interference intensity of the PUSCH.

In one possible implementation manner, the first sending unit 304 is specifically configured to: and sending the additional pilot frequency configuration period to the terminal equipment through Radio Resource Control (RRC) signaling.

In one possible implementation, the apparatus further includes: a second receiving unit 305, configured to receive a target signal and a second pilot signal sent by the terminal device, where the second pilot signal is a pilot signal configured by the terminal device based on the additional pilot period; and a third processing unit 306, configured to demodulate the target signal based on the second pilot signal.

It should be noted that, the functions of each functional unit in the uplink additional pilot device 30 in the embodiment of the present invention may be referred to the related description of the steps performed by the network device in the embodiment of the method described in fig. 2A, which is not repeated herein.

Referring to fig. 3B, fig. 3B is a schematic diagram of another apparatus for configuring uplink additional pilot, which is provided in the present application and applied to a terminal device, where the configuration uplink additional pilot apparatus 40 may include a first sending unit 401, a first receiving unit 402, a second processing unit 403, and a second sending unit 404, where detailed descriptions of each module are as follows.

A first sending unit 401, configured to send a first pilot signal to a network device, where the first pilot signal is used to detect a channel state of an uplink shared physical channel PUSCH that the network device communicates with the terminal;

A first receiving unit 402, configured to receive an additional pilot configuration period sent by the network device, where the additional pilot configuration period is a time interval between two consecutive time slots in which additional pilots need to be configured.

In one possible implementation, the apparatus further includes: a second processing unit 403, configured to configure a second pilot signal based on the additional pilot configuration period; a second transmitting unit 404, configured to transmit a target signal and the second pilot signal to the network device, where the second pilot signal is used to demodulate the target signal.

It should be noted that, the functions of each functional unit in the uplink additional pilot apparatus 40 in the embodiment of the present invention may be referred to the related description of the steps performed by the terminal device in the embodiment of the method described in fig. 2A, which is not repeated herein.

The present application provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program when executed by a processor implements any one of the above methods for configuring uplink additional pilots.

The present application provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program when executed by a processor implements any of the above-mentioned another method for configuring uplink additional pilots.

The embodiment of the invention provides electronic equipment, which comprises a processor, wherein the processor is configured to support the electronic equipment to realize the corresponding functions in any method for configuring uplink additional pilot frequency. The electronic device may also include a memory for coupling with the processor that holds the program instructions and data necessary for the electronic device. The electronic device may also include a communication interface for the electronic device to communicate with other devices or communication networks.

The embodiment of the invention provides electronic equipment, which comprises a processor, wherein the processor is configured to support the electronic equipment to realize the corresponding functions in any other method for configuring uplink additional pilot frequency. The electronic device may also include a memory for coupling with the processor that holds the program instructions and data necessary for the electronic device. The electronic device may also include a communication interface for the electronic device to communicate with other devices or communication networks.

The present application provides a chip system comprising a processor for supporting an electronic device to perform the above-mentioned functions, e.g. generating or processing information involved in the above-mentioned method of configuring uplink additional pilots. In one possible design, the chip system further includes a memory to hold the necessary program instructions and data for the electronic device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

The present application provides a chip system comprising a processor for supporting an electronic device to perform the above-mentioned functions, e.g. generating or processing information involved in the above-mentioned another method of configuring uplink additional pilots. In one possible design, the chip system further includes a memory to hold the necessary program instructions and data for the electronic device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc., in particular may be a processor in the computer device) to perform all or part of the steps of the above-described method of the various embodiments of the present application. Wherein the aforementioned storage medium may comprise: various media capable of storing program codes, such as a U disk, a removable hard disk, a magnetic disk, a compact disk, a Read-Only Memory (abbreviated as ROM), or a random access Memory (Random Access Memory, abbreviated as RAM), are provided.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A method for configuring uplink additional pilots, applied to a network device, the method comprising:

receiving a first pilot signal sent by terminal equipment;

performing channel detection on an uplink shared physical channel (PUSCH) for communicating the network equipment and the terminal equipment according to the first pilot signal to obtain PUSCH channel state information;

determining an additional pilot frequency configuration period based on the PUSCH state information, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency;

and sending the additional pilot frequency configuration period to the terminal equipment.

2. The method of claim 1, wherein the performing channel detection on an uplink shared physical channel PUSCH for the network device to communicate with the terminal device according to the first pilot signal, to obtain PUSCH channel status information, includes:

And carrying out frequency offset analysis, baseband load analysis and interference intensity analysis based on the first pilot signal to obtain the PUSCH channel state information, wherein the PUSCH channel state information comprises one or more of frequency offset, baseband load utilization rate and noise interference intensity of the PUSCH.

3. The method of claim 2, wherein the PUSCH channel state information includes the frequency offset for the PUSCH; the larger the frequency offset, the smaller the additional pilot configuration period.

4. The method of claim 2 or 3, wherein the PUSCH channel status information includes the baseband load utilization of the PUSCH; the higher the baseband load utilization, the greater the additional pilot configuration period.

5. The method of any one of claims 2-4, wherein the PUSCH channel status information includes the noise interference strength of the PUSCH; the greater the noise interference strength, the smaller the additional pilot configuration period.

6. The method according to any of claims 1-5, wherein said sending the additional pilot configuration period to the terminal device comprises:

and sending the additional pilot frequency configuration period to the terminal equipment through Radio Resource Control (RRC) signaling.

7. The method of any one of claims 1-6, wherein the method further comprises:

receiving a target signal and a second pilot signal sent by the terminal equipment, wherein the second pilot signal is a pilot signal configured by the terminal equipment based on the additional pilot period;

demodulating the target signal based on the second pilot signal.

8. A method for configuring uplink additional pilot, applied to a terminal device, the method comprising:

transmitting a first pilot signal to a network device, wherein the first pilot signal is used for detecting the channel state of an uplink shared physical channel (PUSCH) which is used for communicating between the network device and the terminal;

and receiving an additional pilot frequency configuration period sent by the network equipment, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency.

9. The method of claim 8, wherein the method further comprises:

configuring a second pilot signal based on the additional pilot configuration period;

and transmitting a target signal and the second pilot signal to the network equipment, wherein the second pilot signal is used for demodulating the target signal.

10. An apparatus for configuring uplink additional pilots, the apparatus being adapted for use in a network device, the apparatus comprising:

a first receiving unit, configured to receive a first pilot signal sent by a terminal device;

the first processing unit is used for carrying out channel detection on an uplink shared physical channel (PUSCH) for communicating the network equipment and the terminal equipment according to the first pilot signal to obtain PUSCH state information;

a second processing unit, configured to determine an additional pilot configuration period based on the PUSCH channel status information, where the additional pilot configuration period is a time interval between two consecutive slots in which additional pilots need to be configured;

and the first sending unit is used for sending the additional pilot frequency configuration period to the terminal equipment.

11. The apparatus according to claim 10, wherein the first processing unit is specifically configured to:

12. The apparatus of claim 11, wherein the PUSCH channel state information comprises the frequency offset for the PUSCH; the larger the frequency offset, the smaller the additional pilot configuration period.

13. The apparatus of claim 11 or 12, wherein the PUSCH channel status information includes the baseband load utilization of the PUSCH; the higher the baseband load utilization, the greater the additional pilot configuration period.

14. The apparatus of any one of claims 11-13, wherein the PUSCH channel status information includes the noise interference strength of the PUSCH; the greater the noise interference strength, the smaller the additional pilot configuration period.

15. The apparatus according to any of the claims 10-14, wherein the first transmitting unit is specifically configured to:

16. The apparatus according to any one of claims 10-15, wherein the apparatus further comprises:

a second receiving unit, configured to receive a target signal and a second pilot signal sent by the terminal device, where the second pilot signal is a pilot signal configured by the terminal device based on the additional pilot period;

and the third processing unit is used for demodulating the target signal based on the second pilot signal.

17. An apparatus for configuring uplink additional pilots, applied to a terminal device, comprising:

a first sending unit, configured to send a first pilot signal to a network device, where the first pilot signal is used to detect a channel state of an uplink shared physical channel PUSCH that is used for communications between the network device and the terminal;

and the first receiving unit is used for receiving the additional pilot frequency configuration period sent by the network equipment, wherein the additional pilot frequency configuration period is the time interval between two continuous time slots needing to be configured with additional pilot frequency.

18. The apparatus of claim 17, wherein the apparatus further comprises:

a second processing unit configured to configure a second pilot signal based on the additional pilot configuration period;

and the second sending unit is used for sending a target signal and the second pilot signal to the network equipment, and the second pilot signal is used for demodulating the target signal.

19. A computer storage medium, characterized in that the computer storage medium stores a computer program which, when executed by a processor, implements the method of any of the preceding claims 1-7 or the method of claim 8 or 9.

20. A computer program comprising instructions which, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 7 or the method of claim 8 or 9.