CN110891312B

CN110891312B - Information sending method, information receiving method and device

Info

Publication number: CN110891312B
Application number: CN201811050428.1A
Authority: CN
Inventors: 刘显达; 刘鹍鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2023-11-03
Anticipated expiration: 2038-09-10
Also published as: CN110891312A; WO2020052514A1

Abstract

The embodiment of the application describes an information sending method, a receiving method and a receiving device so as to improve the receiving performance of an uplink demodulation reference signal DM-RS, thereby further improving the performance of channel estimation. In the method and the device, the terminal equipment receives downlink control information DCI, wherein the DCI comprises uplink physical resources of a first time period, the terminal equipment transmits data information and DM-RS on the uplink physical resources, and the number of frequency domain units occupied by the DM-RS is smaller than that of the uplink physical resources. Meanwhile, the terminal equipment transmits a reference signal in a second time period, at least one part of a frequency domain unit occupied by the reference signal overlaps with at least one part of a frequency domain unit of an uplink physical resource in the first time period, and the frequency domain unit occupied by the reference signal comprises at least one part of frequency domain units which are not occupied by DM-RS in the frequency domain unit of the uplink physical resource. The reference signal and the DM-RS are used for joint channel estimation.

Description

Information sending method, information receiving method and device

Technical Field

The embodiment of the application relates to a mobile communication technology, in particular to an information sending method, an information receiving method and an information receiving device.

Background

In a new radio access technology (New Radio Access Technology, NR) system of the third generation partnership project (3rd Generation Partnership Project,3GPP), system resources are divided in time into a plurality of orthogonal frequency division multiplexing multiple access (Orthogonal Frequency Division Multiple, OFDM) symbols and in frequency into a number of subcarriers. The physical downlink control channel (Physical Downlink Control Channel, PDCCH) in the downlink typically occupies the first two or three OFDM symbols in one subframe. The PDCCH is used to carry downlink control information (Downlink Control Information, DCI). The DCI carries UE-specific resource allocation information and other control information that is UE-specific or cell-shared. A physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) in the uplink is used to carry uplink data, and a frequency domain signal is typically generated using discrete fourier transform Spread OFDM (DFT-Spread OFDM). In general, one slot (slot) generally includes 14 OFDM symbols. The system also defines the size of a physical Resource block (Physical Resource Block, PRB), one PRB contains 12 subcarriers in the frequency domain, and a certain subcarrier within a certain OFDM symbol is called a Resource Element (RE).

The demodulation reference signal (Demodulation Reference Signal, DM-RS) is used for channel estimation and channel quality and spatial characteristic derivation in data demodulation. Generally, for uplink, DM-RS is in the same time unit as its corresponding PUSCH, and is located before and nested in PUSCH to ensure uplink data demodulation performance. In addition, the frequency domain resources occupied by the PUSCH are the same as the corresponding DM-RS resources so as to ensure the accuracy of frequency domain channel estimation. The DM-RS in NR and the corresponding data channel adopt the same precoding and transmission port number, wherein for uplink, the base station simultaneously indicates the precoding and transmission port number of DM-RS and PUSCH by dispatching DCI of the data channel, the transmission port number of PUSCH corresponds to the transmission layer number, and the DM-RS and the PUSCH adopt the same transmission port at the moment.

When the terminal equipment is at the cell edge, the performance of channel estimation can directly affect the coverage problem, and if the DM-RS occupies the same frequency domain resource as the corresponding PUSCH, the performance of using the DM-RS channel estimation can be affected due to limited uplink transmission power. The carrier frequency resources occupied by the DM-RS on one OFDM symbol are reduced, more OFDM symbols are occupied, and although the transmission power of the DM-RS can be improved, when DFT-S-OFDM is adopted in the uplink, the PUSCH and the DM-RS cannot be transmitted in a frequency division multiplexing mode, and the method can cause that a plurality of OFDM symbols for transmitting the DM-RS in one time unit cannot be used for transmitting the PUSCH, so that the transmission efficiency of the PUSCH and the utilization efficiency of time-frequency resources of a network are affected.

Disclosure of Invention

The information sending method, the information receiving method and the information receiving device are used for improving the receiving performance of the uplink demodulation reference signal DM-RS, so that the performance of channel estimation can be further improved, and finally, the receiving performance of uplink data information, such as the decoding success rate of the uplink data information, is improved.

In a first aspect, an embodiment of the present application provides a method for sending information, where the method includes that a terminal device receives first downlink control information DCI, where the first DCI includes information of a first uplink physical resource in a first period of time; and transmitting a first demodulation reference signal DM-RS and first data information on the first uplink physical resource, and transmitting a reference signal in a second time period, wherein the number M of frequency domain units occupied by the first DM-RS is smaller than or equal to the number N of frequency domain units of the first uplink physical resource, at least one part of the frequency domain units occupied by the reference signal overlaps with at least one part of the frequency domain units of the first uplink physical resource, and M and N are integers larger than or equal to 1. On the one hand, the bandwidth of the DM-RS is smaller than that of the first physical uplink resource, so that the transmitting power of the DM-RS can be improved, and particularly for terminal equipment at the cell edge, the receiving performance of the DM-RS can be improved.

In one possible design, before receiving the DCI, the method further includes: configuration information of a reference signal is received, the configuration information being used to indicate that the reference signal is used to demodulate data.

In one possible design, determining whether the number N of frequency domain units of the first uplink physical resource is greater than or equal to a pre-configured value; and if the number N of the frequency domain units of the first uplink physical resource is larger than or equal to a preset value, determining that the number M of the frequency domain units occupied by the first DM-RS is smaller than the number N of the frequency domain units of the first uplink physical resource. The method can be beneficial to reducing the number of frequency domain units occupied by the DM-RS, improving the transmitting power of the DM-RS and ensuring the receiving performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.

In one possible design, determining whether the number N of frequency domain units of the first uplink physical resource is less than or equal to a pre-configured value; and if the number N of the frequency domain units of the first uplink physical resource is smaller than or equal to a preset value, determining that the number M of the frequency domain units occupied by the first DM-RS is equal to the number N of the frequency domain units of the first uplink physical resource. The receiving performance of the DM-RS can be ensured when the bandwidth of the first uplink physical resource is smaller. The pre-configured value may be pre-agreed or signaled, and may be related to the system Bandwidth or an active partial Bandwidth (BWP), such as 1/n of the system Bandwidth or BWP, n taking an integer greater than 1.

In one possible design, a terminal device receives a second DCI including information of a second uplink physical resource of a third period of time, the third period of time being subsequent to the first period of time, at least a portion of frequency domain units of the second uplink physical resource overlapping at least a portion of frequency domain units of the first uplink physical resource; and transmitting a second DM-RS and second data information on a second uplink physical resource, wherein the number of frequency domain units occupied by the second DM-RS is smaller than the number M of frequency domain units occupied by the first DM-RS. If there is an uplink physical resource in a continuous time period or there is an uplink physical resource in a time period with a density greater than a certain degree, then channel correlation in a period of time can be utilized to combine with DM-RS in a previous time period to perform joint channel estimation, so as to further reduce the number of frequency domain units occupied by DM-RS in a subsequent time period, thereby further improving the transmitting power of DM-RS and the demodulation performance of data information transmitted on the uplink physical resource in the subsequent time period.

In one possible design, the terminal device sends DM-RS and data information on an uplink physical resource for at least one, or all, or K consecutive, or K cumulative time periods between the first and third time periods, K being an integer greater than 1.

In one possible design, the terminal device sends DM-RS and data information on an uplink physical resource of at least one time period between the first time period and the third time period, where a time interval between any two time periods of the at least one time period, the time periods included in the first time period and the third time period is less than K, and K is an integer greater than or equal to 0.

In a second aspect, an embodiment of the present invention provides a method for receiving information, where the method includes that a network device sends first downlink control information DCI, where the first DCI includes information of a first uplink physical resource in a first period of time; and receiving a first demodulation reference signal DM-RS and first data information sent by a terminal device on the first uplink physical resource, and receiving a reference signal in a second time period, wherein the number M of frequency domain units occupied by the first DM-RS is smaller than or equal to the number N of the frequency domain units of the first uplink physical resource, at least one part of the frequency domain units occupied by the reference signal overlaps with at least one part of the frequency domain units of the first uplink physical resource, and M and N are integers larger than or equal to 1. On the one hand, the bandwidth of the DM-RS is smaller than that of the first physical uplink resource, so that the transmitting power of the DM-RS can be improved, and particularly for terminal equipment at the cell edge, the receiving performance of the DM-RS can be improved.

In one possible design, before transmitting the DCI, the method further includes: and transmitting configuration information of the reference signal, wherein the configuration information is used for indicating that the reference signal is used for demodulating data.

In one possible design, determining whether the number N of frequency domain units of the first uplink physical resource is less than or equal to a pre-configured value; and if the number N of the frequency domain units of the first uplink physical resource is smaller than or equal to a preset value, determining that the number M of the frequency domain units occupied by the first DM-RS is equal to the number N of the frequency domain units of the first uplink physical resource. The receiving performance of the DM-RS can be ensured when the bandwidth of the first uplink physical resource is smaller.

In one possible design, a network device sends a second DCI including information of a second uplink physical resource for a third period of time, the third period of time being subsequent to the first period of time, at least a portion of frequency domain units of the second uplink physical resource overlapping at least a portion of frequency domain units of the first uplink physical resource; and receiving a second DM-RS and second data information on the second uplink physical resource, wherein the number of frequency domain units occupied by the second DM-RS is smaller than the number M of frequency domain units occupied by the first DM-RS. If there is an uplink physical resource in a continuous time period or there is an uplink physical resource in a time period with a density greater than a certain degree, then channel correlation in a period of time can be utilized to combine with DM-RS in a previous time period to perform joint channel estimation, so as to further reduce the number of frequency domain units occupied by DM-RS in a subsequent time period, thereby further improving the transmitting power of DM-RS and the demodulation performance of data information transmitted on the uplink physical resource in the subsequent time period.

In one possible design, the network device receives DM-RS and data information on an uplink physical resource for at least one, or all, or K consecutive, or K cumulative time periods between the first time period and the third time period, K being an integer greater than 1.

In one possible design, the network device receives DM-RS and data information on an uplink physical resource of at least one time period between the first time period and the third time period, where a time interval of any two time periods of the at least one time period, the first time period and the third time period is less than K, and K is an integer greater than or equal to 0.

In a third aspect, an embodiment of the present application provides a communication apparatus. The device comprises: a processor and a transceiver coupled to the processor;

the processor is configured to receive, through the transceiver, first downlink control information DCI, where the first DCI includes information of a first uplink physical resource in a first period of time; the processor is further configured to send, by using the transceiver, a first demodulation reference signal DM-RS and first data information on the first uplink physical resource, send, in a second period of time, a reference signal, where the number M of frequency domain units occupied by the first DM-RS is less than or equal to the number N of frequency domain units of the first uplink physical resource, at least a portion of the frequency domain units occupied by the reference signal overlaps with at least a portion of the frequency domain units of the first uplink physical resource, and M, N are integers greater than or equal to 1. On the one hand, the bandwidth of the DM-RS is smaller than that of the first physical uplink resource, so that the transmitting power of the DM-RS can be improved, and particularly for terminal equipment at the cell edge, the receiving performance of the DM-RS can be improved. In one possible design, the processor may be further configured to receive, via the transceiver, configuration information for a reference signal indicating that the reference signal is used to demodulate data prior to receiving the DCI.

In one possible design, the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is greater than or equal to a preconfigured value; and if the number N of the frequency domain units of the first uplink physical resource is larger than or equal to the preconfigured value, determining that the number M of the frequency domain units occupied by the first DM-RS is smaller than the number N of the frequency domain units of the first uplink physical resource. The method can be beneficial to reducing the number of frequency domain units occupied by the DM-RS, improving the transmitting power of the DM-RS and ensuring the receiving performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.

In one possible design, the processor determines whether the number N of frequency domain units for the first uplink physical resource is less than or equal to a pre-configured value; and if the number N of the frequency domain units of the first uplink physical resource is smaller than or equal to a preset value, determining that the number M of the frequency domain units occupied by the first DM-RS is equal to the number N of the frequency domain units of the first uplink physical resource. The receiving performance of the DM-RS can be ensured when the bandwidth of the first uplink physical resource is smaller.

In one possible design, the processor is configured to receive, by the transceiver, a second DCI including information of a second uplink physical resource for a third time period, the third time period being subsequent to the first time period, at least a portion of frequency domain units of the second uplink physical resource overlapping with at least a portion of frequency domain units of the first uplink physical resource; the processor is further configured to send, through the transceiver, a second DM-RS and second data information on the second uplink physical resource, where the number of frequency domain units occupied by the second DM-RS is smaller than the number M of frequency domain units occupied by the first DM-RS. If there is an uplink physical resource in a continuous time period or there is an uplink physical resource in a time period with a density greater than a certain degree, then channel correlation in a period of time can be utilized to combine with DM-RS in a previous time period to perform joint channel estimation, so as to further reduce the number of frequency domain units occupied by DM-RS in a subsequent time period, thereby further improving the transmitting power of DM-RS and the demodulation performance of data information transmitted on the uplink physical resource in the subsequent time period.

In one possible design, the processor is configured to send, by the transceiver, DM-RS and data information on an uplink physical resource for at least one time period, or all time periods, or K consecutive time periods, or K cumulative time periods between the first time period and the third time period, where K is an integer greater than 1.

In one possible design, the processor is configured to send, by the transceiver, DM-RS and data information on an uplink physical resource of at least one time period between the first time period and the third time period, where a time interval between any two time periods of the at least one time period, the first time period and the third time period, is less than K, and K is an integer greater than or equal to 0.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including: a processor and a transceiver coupled to the processor;

the processor is configured to send, through the transceiver, first downlink control information DCI, where the first DCI includes information of a first uplink physical resource in a first period of time; the processor is further configured to receive, through the transceiver, a first demodulation reference signal DM-RS and first data information sent by a terminal device on the first uplink physical resource, receive, in a second period of time, a reference signal, where the number M of frequency domain units occupied by the first DM-RS is less than or equal to the number N of frequency domain units of the first uplink physical resource, at least a portion of the frequency domain units occupied by the reference signal overlaps with at least a portion of the frequency domain units of the first uplink physical resource, and M, N are integers greater than or equal to 1. On the one hand, the bandwidth of the DM-RS is smaller than that of the first physical uplink resource, so that the transmitting power of the DM-RS can be improved, and particularly for terminal equipment at the cell edge, the receiving performance of the DM-RS can be improved.

In one possible design, the processor may be configured to transmit configuration information for a reference signal via the transceiver prior to transmitting the DCI, the configuration information indicating that the reference signal is used to demodulate data.

In one possible design, the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is greater than or equal to a preconfigured value; and if the number of the frequency domain units of the first uplink physical resource is greater than or equal to the preconfigured value, determining that the number M of the frequency domain units occupied by the first DM-RS is smaller than the number N of the frequency domain units of the first uplink physical resource. The method can be beneficial to reducing the number of frequency domain units occupied by the DM-RS, improving the transmitting power of the DM-RS and ensuring the receiving performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.

In one possible design, the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is less than or equal to a preconfigured value; and if the number N of the frequency domain units of the first uplink physical resource is smaller than or equal to a preset value, determining that the number M of the frequency domain units occupied by the first DM-RS is equal to the number N of the frequency domain units of the first uplink physical resource. The receiving performance of the DM-RS can be ensured when the bandwidth of the first uplink physical resource is smaller.

In one possible design, the processor is configured to transmit, through the transceiver, a second DCI including information of a second uplink physical resource for a third time period, the third time period being subsequent to the first time period, at least a portion of frequency domain units of the second uplink physical resource overlapping with at least a portion of frequency domain units of the first uplink physical resource; the processor is further configured to receive, by the transceiver, a second DM-RS and second data information on the second uplink physical resource, where the number of frequency domain units occupied by the second DM-RS is less than the number M of frequency domain units occupied by the first DM-RS. If there is an uplink physical resource in a continuous time period or there is an uplink physical resource in a time period with a density greater than a certain degree, then channel correlation in a period of time can be utilized to combine with DM-RS in a previous time period to perform joint channel estimation, so as to further reduce the number of frequency domain units occupied by DM-RS in a subsequent time period, thereby further improving the transmitting power of DM-RS and the demodulation performance of data information transmitted on the uplink physical resource in the subsequent time period.

In one possible design, the processor is configured to receive, by the transceiver, DM-RS and data information on an uplink physical resource for at least one time period, or all time periods, or K consecutive time periods, or K cumulative time periods between the first time period and the third time period, where K is an integer greater than 1.

In one possible design, the processor is configured to receive, by the transceiver, DM-RS and data information on an uplink physical resource of at least one time period between the first time period and the third time period, where a time interval between any two time periods of the at least one time period, the first time period and the third time period, is less than K, and K is an integer greater than or equal to 0.

In combination with the above aspects and possible designs, in one possible design, the frequency domain unit occupied by the reference signal includes at least a portion of frequency domain units not occupied by the first DM-RS in the frequency domain units of the first uplink physical resource. The frequency domain unit occupied by the DM-RS and the frequency domain unit occupied by the reference signal are complemented in frequency domain, so that channel information of more frequency domain units in the frequency domain unit of the first uplink physical resource can be obtained, and the demodulation of the first data information transmitted on the first uplink physical resource is facilitated.

In combination with the above aspects and possible designs, in one possible design, the frequency domain unit occupied by the first DM-RS does not completely overlap with the frequency domain unit occupied by the reference signal, that is, at least part of the frequency domain units occupied by the reference signal do not include any frequency domain unit occupied by the first DM-RS, and/or at least part of the frequency domain units occupied by the first DM-RS do not include any frequency domain unit occupied by the reference signal.

With reference to the above aspects and possible designs, in one possible design, the first DCI includes a reference signal trigger request, where the reference signal trigger request is used to instruct transmission of the reference signal in the second period of time, and/or the reference signal trigger request is used to instruct a frequency domain unit occupied by transmission of the reference signal in the second period of time, and/or the reference signal trigger request is used to instruct a resource Pattern (Pattern) used for transmission of the reference signal in the second period of time, and/or the reference signal trigger request is used to instruct transmission of the first DM-RS, the first data information, and spatial filtering information used for transmission of the reference signal in the second period of time.

In combination with the above aspects and possible designs, in one possible design, the first time period and the second time period belong to the same time period, or the second time period is after the first time period.

In combination with the above aspects and possible designs, in one possible design, the timing relationship of the first time period and the second time period is fixed in the protocol, either by higher layer signaling configuration or carried by the first DCI.

With reference to the above aspects and possible designs, in one possible design, a physical antenna port for transmitting the reference signal is the same as a physical antenna port for transmitting the first DM-RS, and/or a precoding matrix used for transmitting the reference signal is the same as a precoding matrix used for transmitting the first DM-RS, and/or spatial filtering information of the reference signal is the same as spatial filtering information of the first DM-RS, and/or a port number of the reference signal is the same as a port number of the first DM-RS, and ports of the reference signal are mapped one-to-one with ports of the first DM-RS.

In combination with the above aspects and possible designs, in one possible design, the first DCI further includes first signaling, where the first signaling is used to indicate a number M and a frequency domain location of frequency domain units occupied by the first DM-RS, and/or a number M and a frequency domain location of frequency domain units occupied by the reference signal.

In combination with the above aspects and possible designs, in one possible design, the number M and the frequency domain location of the frequency domain units occupied by the first DM-RS include: m consecutive frequency domain units in the first uplink physical resource starting from the lowest frequency; m consecutive frequency domain units in the first uplink physical resource starting from a highest frequency; m discrete frequency domain units in the first uplink physical resource; m continuous frequency domain units of the first uplink physical resource starting from the lowest frequency plus a preconfigured frequency Offset (Offset); and M continuous frequency domain units of the first uplink physical resource are started from the highest frequency plus a preconfigured frequency Offset (Offset), wherein the Offset is a positive integer.

With reference to the above aspects and possible designs, in one possible design, the frequency domain unit occupied by the reference signal is determined according to the frequency domain unit occupied by the first DM-RS; or the frequency domain unit occupied by the first DM-RS is determined according to the frequency domain unit occupied by the reference signal.

With reference to the foregoing aspects and possible designs, in one possible design, the first DCI further includes transmission layer number indication information, where the transmission layer number indication information is used to indicate a layer number of data transmission on the first uplink physical resource, and the number of ports of the reference signal is the same as the transmission layer number indicated by the transmission layer number indication information.

In combination with the above aspects and possible designs, in one possible design, the reference signal is a sounding reference signal, SRS.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the methods of the above aspects and possible designs.

In a sixth aspect, embodiments of the present application provide a communications apparatus comprising a processor and a memory coupled to the processor, the memory configured to store instructions, the processor configured to read and invoke the instructions to perform the methods of the aspects and possible designs described above.

In a seventh aspect, embodiments of the present application provide a computer program which, when executed, performs the methods of the above aspects and possible designs.

Drawings

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a communication method according to an embodiment of the present application;

FIG. 4a is a schematic diagram of a physical resource structure according to an embodiment of the present application;

fig. 4b is a schematic diagram of occupied time-frequency resources of an SRS according to an embodiment of the present application;

fig. 4c is a schematic diagram of a time-frequency resource occupied by DM-RS in a continuous period according to an embodiment of the present application;

fig. 5 is a flow chart of another communication method according to an embodiment of the present application;

Detailed Description

Embodiments of the present application may be used in wireless communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) systems, wideband code division multiple access (Wideband Code Division Multiple Access Wireless, WCDMA) systems, general packet Radio service (General Packet Radio Service, GPRS) systems, universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS), and long term evolution (Long Term Evolution, LTE) systems and their evolution systems, new Radio, NR) systems.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system includes a base station 101 and at least one terminal device, here, two terminal devices are illustrated as a terminal device 111 and a terminal device 112, where the terminal device 111 and the terminal device 112 are located in a coverage area of the base station 101 and communicate with the base station 101, so as to implement technical solutions provided in the following embodiments of the present application. Illustratively, base station 101 is a base station of an NR system, and terminal device 101 and terminal device 102 are terminal devices of corresponding NR systems.

Embodiments of the present application describe various embodiments in connection with a network device and a terminal device that may operate in either a licensed band or an unlicensed band, wherein:

a terminal device can also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal device may be a STATION (ST) in a wireless local area network (Wireless Local Area Networks, WLAN), may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital processing (Personal Digital Assistant, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a next generation communication system, e.g. a terminal device in the fifth generation communication (5G) network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, a terminal device in an NR system, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

Further, the network device may be a device for communicating with a mobile device. The network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, or a new generation base station (new generation Node B, gndeb) in an NR system, etc.

In addition, in the embodiment of the present application, the network device provides services for the cell, and the terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell). The small cell here may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

In addition, the carrier wave in the LTE system or the NR system may have multiple cells operating in the same frequency at the same time, and in some special scenarios, the carrier wave may be considered to be identical to the concept of the cell. For example, in the scenario of carrier aggregation (Carrier Aggregation, CA), when configuring a secondary carrier for a UE, the carrier index of the secondary carrier and the Cell identity (Cell ID) of the secondary Cell operating on the secondary carrier are carried at the same time, in which case the carrier is considered to be equivalent to the concept of a Cell, such as that the UE accesses one carrier and accesses one Cell are equivalent.

Higher layer signaling may refer to: signaling sent by a higher layer protocol layer, wherein the higher layer protocol layer is at least one protocol layer in each protocol layer above a physical layer. Wherein, the higher protocol layer may specifically be at least one of the following protocol layers: a medium access control (Medium Access Control, MAC) layer, a radio link control (Radio Link Control, RLC) layer, a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio resource control (Radio Resource Control, RRC) layer, and a non-access layer (Non Access Stratum, NAS) layer, etc.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

It should be understood that the term "no within X" as used herein includes any time on X, the start time of X, the end time of X. The "no X" means that none of the times in X is present, or that none of the times in X is present at one or more times, and the present application is not limited thereto.

Wherein the term "time domain resource" as used herein generally refers to a first time domain resource, a second time domain resource, a third time domain resource, etc. "frequency domain resource" refers broadly to a first frequency domain resource, a second frequency domain resource, a third frequency domain resource, and so on.

Fig. 2 shows a wireless communication device provided by an embodiment of the present invention, which may be used as the network device 101 or applied to an apparatus in the network device 101. The following description will take the wireless communication device as an example of the network device 101. The network device 101 is capable of performing the method provided by the embodiments of the present invention. The network device 101 may include: a processor 201 and a transceiver 202 for implementing wireless communication functions.

The processor 201 may be a modem processor. Processor 201 may include a baseband processor (baseband processor, BBP) that processes the digitized received signal to extract the information or data bits carried in the signal. For this purpose, the BBP is typically implemented in one or more digital signal processors (digital signal processor, DSP) within the processor 201 or by a separate integrated circuit (integrated circuit, IC).

Transceiver 202 may be used to support the transceiving of information between network device 101 and a terminal device. In the uplink, uplink radio frequency signals from the terminal device are received via the antenna, mediated by the transceiver 202, baseband signals are extracted and output to the processor 201 for processing to recover the traffic data and/or signaling information transmitted by the terminal device. On the downlink, baseband signals carrying traffic data and/or signaling messages to be transmitted to the terminal device are modulated by transceiver 202 to generate downlink radio frequency signals and transmitted via an antenna to the UE. The transceiver 202 may include separate receiver and transmitter circuits, or may be integrated into the same circuit to perform the transceiving functions.

The network device 101 may also include a memory 203 that may be used to store program codes and/or data for the network device 101.

The network device 101 may further comprise a communication unit 204 for supporting the network device 101 to communicate with other network entities. For example, for supporting the network device 101 to communicate with a network device of a core network or the like.

In the implementation shown in fig. 2, the processor 201 may be coupled/connected with a transceiver 202, a memory 203 and a communication unit 204, respectively. As a further alternative, the network device 101 may also include a bus. The transceiver 202, the memory 203 and the communication unit 204 may be connected to the processor 201 via buses. For example, the bus may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, or the like. The buses may include an address bus, a data bus, a control bus, and the like.

Fig. 3 shows another wireless communication apparatus provided in an embodiment of the present invention, which may be used as the terminal apparatuses 111 to 112 or applied to devices in the terminal apparatuses 111 to 112. The following description will take a wireless communication device shown in fig. 3 as an example of a terminal device. The terminal equipment can execute the method provided by the embodiment of the invention. The terminal device may be any one of the 2 terminal devices 111 to 112. The terminal device comprises a transceiver 301, a memory 303 and a processor 304 for implementing wireless communication functions.

Transceiver 301 may be used to support the transmission and reception of information between terminal devices 111-112 and network device 101. In the downlink, downlink radio frequency signals from the network device are received via the antenna, mediated by transceiver 301, baseband signals extracted and output to processor 304 for processing to recover traffic data and/or signaling information transmitted by the network device. On the uplink, baseband signals carrying traffic data and/or signaling messages to be transmitted to the network device are modulated by transceiver 301 to generate an uplink radio frequency signal and transmitted via an antenna to the network device. The transceiver 301 may include separate receiver and transmitter circuits, or may be integrated in the same circuit to implement the transceiver function.

Processor 304 may be a modem processor (modem processor). The processor 304 may include a baseband processor (baseband processor, BBP) that processes the digitized received signal to extract the information or data bits carried in the signal. For this purpose, the BBP is typically implemented in one or more digital signal processors (digital signal processor, DSP) within the processor 304 or by a separate integrated circuit (integrated circuit, IC).

For example, as shown in fig. 3, in one implementation of the processor 304, the processor 304 may include an encoder 3041, a modulator 3042, a decoder 3043, and a demodulator 3044. The encoder 3041 is used for encoding a signal to be transmitted. For example, the encoder 3041 may be configured to receive traffic data and/or signaling messages to be transmitted on the uplink and process (e.g., format, encode, interleave, etc.) the traffic data and signaling messages. The modulator 3042 is used to modulate the output signal of the encoder 3041. For example, the modulator may perform symbol mapping and/or modulation, etc., on the output signal (data and/or signaling) of the encoder and provide output samples. The demodulator 3044 is configured to perform demodulation processing on an input signal. For example, a demodulator 3044 processes the input samples and provides symbol estimates. The decoder 3043 is used for decoding the demodulated input signal. For example, the decoder 3043 deinterleaves, decodes, and/or the like the demodulated input signal, and outputs a decoded signal (data and/or signaling).

The processor 304 receives digitized data, which may represent voice, data, or control information, and processes the digitized data for transmission. The processor 304 may support one or more of a variety of wireless communication protocols for a variety of communication systems, such as a long term evolution (Long Term Evolution, LTE) communication system, a New Radio, NR, a universal mobile communication system (Universal Mobile Telecommunications System, UMTS), high speed packet access (High Speed Packet Access, HSPA), and the like. Optionally, one or more memories may be included in the processor 304.

The terminal device may further comprise an application processor (application processor) 302 for generating the above-mentioned digitized data, which may represent voice, data or control information.

The processor 304 and the application processor 302 may be integrated in one processor chip.

The memory 303 is used to store program code (sometimes also referred to as programs, instructions, software, etc.) and/or data for supporting communication with the terminal device.

It should be noted that the memory 203 or the memory 303 may include one or more storage units, for example, may be a storage unit inside the processor 201 or the processor 304 or the application processor 302 for storing program codes, or may be an external storage unit independent of the processor 201 or the processor 304 or the application processor 302, or may also be a component including a storage unit inside the processor 201 or the processor 304 or the application processor 302 and an external storage unit independent of the processor 201 or the processor 304 or the application processor 302.

The processor 201 and the processor 304 may be the same type of processor or different types of processor. For example, the logic may be implemented in a central processing unit (Central Processing Unit, CPU), general purpose processor, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit (ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic device, hardware component, other integrated circuit, or any combination thereof. The processor 201 and the processor 304 may implement or execute the various exemplary logic blocks, modules and circuits described in connection with the disclosure of embodiments of the present invention. The processor may also be a combination of devices implementing computing functions, e.g., comprising one or more microprocessor combinations, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC), etc.

Those of skill in the art will appreciate that the various illustrative logical blocks, modules, circuits, and algorithms described in connection with the aspects disclosed herein may be implemented as electronic hardware, instructions stored in memory or in another computer readable medium and executed by a processor or other processing device, or combinations of both. As an example, the apparatus described herein may be used in any circuit, hardware component, IC, or IC chip. The memory disclosed herein may be any type and size of memory and may be configured to store any type of information as desired. To clearly illustrate this interchangeability, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. How such functionality is implemented depends upon the particular application, design choice, and/or design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

For convenience of description, the network device is taken as the network device 101, and the terminal device is taken as the terminal device 111 as an example.

For convenience of description, the frequency domain unit in the present application may be a physical resource block (Physical Resource Block, PRB), or a resource block group (Resource Block Group, RBG) or a subcarrier, or other frequency domain units, and the present application is not limited thereto.

Fig. 4 is a flow chart of an information sending method. The embodiment shown in fig. 4 comprises the following steps:

s401, the network device 101 transmits configuration information of the reference signal to the terminal device 111, the configuration information being used to indicate that the reference signal is used to demodulate data. Accordingly, the terminal device receives configuration information of the reference signal from the network device.

The reference signal may be a sounding reference signal (sounding reference signal, SRS), or a phase tracking reference signal, or other uplink reference signal, as the application is not limited. For convenience, the SRS is described below as an example.

S401 is optional.

Alternatively, the SRS may be fixedly configured in the protocol for demodulating the data.

The operation of the network device 101 in S401 may be performed by the transceiver 202 or by the processor 201 through the transceiver 202. The operation of the terminal device 111 in S401 may be performed by the transceiver 301 or by the processor 304 through the transceiver 301.

Specifically, the configuration information may be included in higher layer signaling, which may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high-level signaling may be terminal equipment specific high-level signaling, cell specific high-level signaling, or a group of high-level signaling shared by terminal equipment, which is not limited by the present invention. The configuration information may also be fixed in the protocol. The embodiment of the present invention is described by taking the RRC layer signaling as an example.

In the prior art, the configuration information of the SRS in the RRC signaling includes functions of the SRS, for example, the functions of the SRS are used for non-codebook uplink transmission, for beam management, for antenna polling, etc., and configuration parameters of SRS resources and transmission modes of the SRS corresponding to each function are different.

Further, the SRS configuration information includes SRS resource configuration information. Specifically, for example, the number of ports of the SRS resource, the number of occupied OFDM symbols, the time-domain position, the frequency hopping bandwidth of the SRS, the maximum frequency hopping bandwidth of the SRS, cyclic Shift (CS), transmission comb (Transmission Comb), sequence index value (sequence ID), transmission beam information, and the like.

In the embodiment of the present invention, the function of SRS may be configured for demodulation, which is different from the above-described function. For example, when the network device 101 receives information transmitted by the terminal device 111 on PUSCH resources, the network device 101 may perform channel estimation using DM-RS associated with PUSCH and SRS for demodulation. At this time, more time-frequency domain resources can be used for channel estimation, so that the channel estimation performance can be effectively improved, and the PUSCH decoding performance is ensured.

S402, the network device 101 transmits first downlink control information (Downlink Control Information, DCI) to the terminal device 111. Accordingly, terminal device 111 receives the DCI.

The operation of the network device 101 in S402 may be performed by the transceiver 202 or by the processor 201 through the transceiver 202. The operation of the terminal device 111 in S402 may be performed by the transceiver 301 or by the processor 304 through the transceiver 301.

Specifically, the first DCI includes information of a first uplink physical resource of a first period. The length of the first period may be a length of one scheduling time unit, for example, the length of the first period may be a length of one Subframe (Subframe), or a length of one Slot (Slot), or a length of one Mini-Slot (Mini-Slot), or a length of one transmission time interval (Transmission Time Interval, TTI), or a length including X OFDM symbols (OFDM Symbol, abbreviated as OS), where X is a positive integer, or a length of other time units, which is not limited by the present invention. The position of the first time period may be determined as the first time period by referring to a time period in which the first DCI is detected and an nth time period from the time period in which the first DCI is detected. The present invention is not limited to this, and the following description will take the length of the first period as one Slot as an example.

The information of the first uplink physical resource may include the number N of frequency domain units occupied by the first uplink physical resource, where N is an integer greater than or equal to 1. The information of the first uplink physical resource may further include a frequency domain location of a frequency domain unit of the first uplink physical resource. Such as what number of PRBs the frequency domain unit occupied by the first uplink physical resource is. For example, as shown in fig. 5, assuming that one Slot includes 14 OSs, respectively identified by OS0 to OS13, the frequency domain unit occupied by the first uplink physical resource includes 10 PRBs (i.e., n=10), respectively identified by PRB10 to PRB19, and 14 OSs occupy in the time domain, respectively identified by OS0 to OS 13.

It may be appreciated that the first uplink physical resource includes a PUSCH resource and/or a PUCCH resource. The invention is not limited. The PUSCH resource will be described below as an example.

Specifically, there are two PUSCH scheduling modes: centralized scheduling (PUSCH occupies contiguous PRBs) and distributed scheduling (PUSCH occupies non-contiguous PRBs). For DFT-s-OFDM (Discrete Fourier Transform-Spread OFDM) waveforms, a centralized scheduling manner is generally used to schedule cell edge users to increase the utilization of the transmit power. When a centralized scheduling mode is adopted and the bandwidth occupied by the DCI indication PUSCH is greater than or equal to M PRBs, the bandwidth occupied by the DM-RS is M PRBs, so that the performance of the DM-RS channel estimation is ensured, and the demodulation performance of the PUSCH associated with the DM-RS is ensured. Meanwhile, the starting position of the M PRBs occupied by the DM-RS is the starting position of the bandwidth occupied by the PUSCH, for example, as shown in fig. 4a, so that the transmission bandwidth of the SRS for supplementing the bandwidth occupied by the DM-RS can be ensured to be continuous, so as to improve the channel estimation performance through the SRS. When the DCI indicates that the bandwidth occupied by the PUSCH is smaller than the M PRBs, the bandwidth occupied by the DM-RS is the same as the bandwidth occupied by the corresponding PUSCH, and when the DCI indicates that the bandwidth occupied by the PUSCH is larger than the M PRBs, the bandwidth occupied by the DM-RS is smaller than the bandwidth occupied by the corresponding PUSCH. For the distributed scheduling mode, when the bandwidth occupied by the DCI indicated PUSCH is greater than or equal to M PRBs, the bandwidth occupied by the DM-RS is M PRBs, and the continuous PRBs in the M frequency domains are occupied, so that the performance of the DM-RS channel estimation is ensured, and the demodulation performance of the PUSCH associated with the DM-RS is ensured. When the DCI indicates that the bandwidth occupied by the PUSCH is smaller than the M RBs, the bandwidth occupied by the DM-RS is the same as the bandwidth occupied by the corresponding PUSCH.

The number M and/or the frequency domain location of the frequency domain units occupied by the first DM-RS may be a fixed value in a protocol, or may be a signaling sent by the network device 101 to the terminal device 111, where the signaling may be a signaling in a higher layer, and the signaling in the higher layer may be a signaling in a MAC layer, a signaling in an RLC layer, a signaling in a PDCP layer, or a signaling in an RRC layer, which is not limited by the present invention. The high layer signaling may be UE specific high layer signaling, cell specific high layer signaling, or high layer signaling shared by a group of terminal devices, which is not limited by the present invention. Or the signaling may be physical layer control signaling, which may be terminal equipment specific signaling, cell specific signaling, or a group of signaling shared by terminal equipment, which is not limited by the present invention. M represents the maximum bandwidth configured for transmitting DM-RS for the terminal device 111, for example, assuming that the frequency domain unit is PRB, m=8, indicating that the maximum bandwidth for transmitting DM-RS by the terminal device 111 is 8 PRBs. For example, the first DCI may include first signaling for indicating the number M and/or the frequency domain position of the frequency domain units occupied by the first DM-RS, where M is an integer greater than or equal to 1. Wherein M is less than N.

The number M of frequency domain units may be one member of a set of numbers of pre-configured frequency domain units, which set may comprise one or more members. For example, the set includes { m1=4, m2=8, m3=12 }, and M may be one of the sets { M1, M2, M3}, for example, m=m1=4. The above set may be a fixed set in a protocol, or may be a set in which the network device 101 sends signaling to the terminal device 11, and the specific signaling may be signaling in step 402, or may be other signaling, which is not limited by the present invention. For example, as shown in fig. 5, the number of frequency domain units occupied by the first DM-RS is 4 PRBs (i.e., m=4), and each PRB is identified by PRB10 to PRB13, and occupies one OS in the time domain.

When the first DCI may include first signaling, where the first signaling is used to indicate the number M and/or the frequency domain position of the frequency domain units occupied by the first DM-RS, the first signaling includes an association between a value of a field used to indicate the number M of the frequency domain units occupied by the first DM-RS and the number N of the frequency domain units occupied by the PUSCH associated with the first DM-RS. The association relationship includes a position of a frequency domain unit occupied by the first DMRS and a position relationship of a frequency domain unit occupied by an associated PUSCH, for example, the association relationship occupies M frequency domain units with sequentially increased index values starting from a frequency domain unit with the lowest index value (or with the lowest frequency) occupied by the PUSCH, or occupies M frequency domain units with sequentially decreased index values starting from a frequency domain unit with the highest index value (or with the highest frequency) occupied by the PUSCH, or occupies M frequency domain units with sequentially increased or decreased index values starting from a frequency domain unit occupied by a certain PUSCH, or occupies M frequency domain resources with the same interval between the start and stop positions of the frequency domain of the PUSCH. The association relationship may further include a relationship between the number of frequency domain units occupied by the first DMRS and the number of frequency domain units occupied by the associated PUSCH, such as occupying 1/2, or 1/4, or 1/8 of the frequency domain units occupied by the PUSCH, or being the same as the number of frequency domain units occupied by the PUSCH. The association relationship may also include both the number relationship and the positional relationship. A specific indication manner includes, for example, 2 bits in the first signaling to indicate the number M of frequency domain units occupied by the first DM-RS, where "00" indicates that the number M of frequency domain units occupied by the first DM-RS is the same as the number N of frequency domain units of the associated PUSCH, "01" indicates that m=n/2, "10" indicates that m=n/4, and "11" indicates that m=n/8. The above association of M and N may be referred to as DM-RS Pattern. The invention does not limit the association relation between the specific value and M and N, and the specific value contains a plurality of bits. The correspondence between the DM-RS Pattern and the value of the field used to indicate the number M of the frequency domain units occupied by the first DM-RS Pattern may be fixed in a protocol, or may be that the network device 101 sends signaling to the terminal device 111, where the signaling may be a higher layer signaling, and the higher layer signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high-level signaling may be terminal equipment specific high-level signaling, cell specific high-level signaling, or a group of high-level signaling shared by terminal equipment, which is not limited by the present invention. Or the signaling may be physical layer control signaling, where the physical layer control signaling may be terminal device specific signaling, cell specific signaling, or signaling shared by a group of terminal devices, which is not limited by the present invention. Further, one DM-RS Pattern corresponds to a relative positional relationship of frequency domain units of DM-RS and PUSCH. For example, "00" represents that the frequency domain unit occupied by DM-RS is the same as the frequency domain unit occupied by PUSCH, "01" represents m=n/2, and occupies the first N/4 frequency domain units and the last N/4 frequency domain units of PUSCH, assuming that n=12, m=6, and the frequency domain unit occupied by PUSCH is PRB 10-PRB 21, DM-RS occupies PRB 10-PRB 12, and PRB 19-PRB 21. At this time, when the channel in the first period is flat, the network device 101 may perform frequency domain filtering to directly demodulate data on the bandwidth occupied by the entire PUSCH, and at this time, the efficiency of uplink data demodulation may be improved.

Alternatively, the frequency domain location of the frequency domain resource occupied by the first DM-RS may be M consecutive frequency domain units from the lowest frequency in the first uplink physical resource. For example, as shown in fig. 4a, assuming that the first uplink physical resource is 10 PRBs (i.e., n=10) with a PRB Index (Index) of 10 to a PRB Index (Index) of 19, the smaller the PRB Index number is, the lower the frequency position representing the PRB (the lower the frequency point is), the larger the PRB Index number is, the higher the frequency position representing the PRB (the higher the frequency point is), and the frequency domain position of the frequency domain resource occupied by the first DMR may be 4 PRBs with a PRB Index number of 10 to a PRB Index number of 13 (i.e., m=4). Alternatively, the frequency domain location of the frequency domain resource occupied by the first DM-RS may be M consecutive frequency domain units from the highest frequency in the first uplink physical resource, for example, assuming that the first uplink physical resource is 10 PRBs (i.e., n=10) with a PRB Index (Index) of 10 to a PRB Index (Index) of 19, the frequency domain location of the frequency domain resource occupied by the first DM-RS may be 4 PRBs (i.e., m=4) with a PRB Index number of 16 to a PRB Index number of 19. Alternatively, the frequency domain location of the frequency domain resource occupied by the first DM-RS may be M discrete frequency domain units in the first uplink physical resource, for example, assuming that the first uplink physical resource is 10 PRBs (i.e., n=10) with a PRB Index (Index) of 10 to a PRB Index (Index) of 19, the frequency domain location of the frequency domain resource occupied by the first DM-RS may be a PRB Index number of 10, a PRB Index number of 13, a PRB Index number of 15, and a PRB Index number of 17 for 4 PRBs (i.e., m=4). Or, the frequency domain position of the frequency domain resource occupied by the first DM-RS may be M consecutive frequency domain units of the first uplink physical resource starting from the lowest frequency plus a preconfigured frequency Offset; and M continuous frequency domain units of the first uplink physical resource are started from the highest frequency plus a preconfigured frequency Offset (Offset), wherein the Offset is a positive integer.

Alternatively, the frequency domain location of the frequency domain resource occupied by the first DM-RS may be one member of a set of frequency domain locations of preconfigured frequency domain units, and the set may include one or more members. For example, the set of frequency domain positions of the preconfigured frequency domain units includes { M1 continuous frequency domain units from the lowest frequency, M1 continuous frequency domain units from the highest frequency, M1 discrete frequency domain units, M2 continuous frequency domain units from the lowest frequency, M2 continuous frequency domain units from the highest frequency, M2 discrete frequency domain units, M3 continuous frequency domain units from the lowest frequency, M3 continuous frequency domain units from the highest frequency, M3 discrete frequency domain units }. The above-mentioned set of frequency domain locations may be a fixed set in a protocol, or may be a set in which the network device 101 sends signaling to the terminal device 11, and the specific signaling may be signaling in step 402, or may be other signaling, which is not limited by the present invention. It can be appreciated that the first uplink physical resource includes a resource occupied by the first DM-RS. Further, N is an integer multiple of M, such as n= 2*M, or n= 3*M, etc. When the channel frequency selection in the first time period is serious, at this time, the difference of channel quality (such as SINR) on different sub-bands of the PUSCH carried in the first time period is large, and the most preferred precoding matrix adopted for PUSCH transmission on different sub-bands is different. However, the precoding indication information of the DM-RS/PUSCH corresponds to the scheduling bandwidth of the entire PUSCH, that is, different subbands carrying the PUSCH correspond to the same precoding matrix, and the precoding matrix is selected so that the performance of the entire subbands carrying the PUSCH is as average as possible, which brings about the problem that for some subbands, the precoding matrix is not optimal, and the transmission performance of the PUSCH on these subbands is greatly affected, so that the DMRS may occupy only a part of the subbands occupied by the PUSCH and thus the precoding matrix is optimal for the part of the subbands.

The first DM-RS is associated with a first uplink physical resource, i.e., the first DM-RS is configured to perform channel estimation to decode first data information transmitted on a first uplink physical channel. The first DM-RS is located in a first time period.

Optionally, the first DCI may further include an SRS trigger request. The SRS trigger request is used to indicate that the SRS is transmitted in the second period of time, and/or the SRS trigger request is used to indicate a frequency domain unit (i.e., SRS resource) occupied by the SRS is transmitted in the second period of time, and/or the SRS trigger request is used to indicate a resource Pattern (Pattern) used for the SRS is transmitted in the second period of time, and/or the SRS trigger request is used to indicate the first DM-RS, the first data information, and the spatial filtering information used for the SRS is transmitted in the second period of time. The SRS is associated with, i.e., used for channel estimation, the first uplink physical resource to decode the first data information transmitted on the first uplink physical resource. The length of the second period may refer to the length of the first period, and will not be described herein. The second period may be the same period as the first period, or the second period may also be located before the first period, or the second period may also be located after the first period, which is not limited by the present invention, and the timing relationship between the second period and the first period may be fixed in a protocol, or may be that the network device 101 sends the signaling to the terminal device 111 through signaling, where the signaling may be at a higher layer signaling, and the higher layer signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high-level signaling may be terminal equipment specific high-level signaling, cell specific high-level signaling, or a group of high-level signaling shared by terminal equipment, which is not limited by the present invention. Or the signaling may be physical layer control signaling, where the physical layer control signaling may be terminal device specific signaling, cell specific signaling, or signaling shared by a group of terminal devices, which is not limited by the present invention. For example, the timing relationship may be a time offset, and the network device 101 may carry the time offset information in the first DCI and notify the terminal device. For example, as shown in fig. 4a, the SRS and the first DM-RS are at the same Slot, i.e., the second time period is the same time period as the first time period. At least a portion of the frequency domain elements of the SRS resource overlap with at least a portion of the frequency domain elements of the first uplink physical resource. For example, the first uplink physical resource may include all frequency domain units occupied by the SRS, or the first uplink physical resource may include a portion of the frequency domain units occupied by the SRS, which is not limited by the present invention. For example, as shown in fig. 4a, the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, and the frequency domain units occupied by the SRS are PRB16 to PRB19. For another example, the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, and the frequency domain units occupied by the SRS are PRB16 to PRB23. Further, at least a portion of the frequency domain unit occupied by the SRS is different from at least a portion of the frequency domain unit occupied by the resources of the first DM-RS. For example, as shown in fig. 4a, the frequency domain units PRB 10-PRB 19 occupied by the first uplink physical resource, the frequency domain units PRB 10-PRB 13 occupied by the first DM-RS, and the frequency domain units PRB 16-PRB 19 occupied by the SRS. For another example, the frequency domain units PRB 10-PRB 19 occupied by the first uplink physical resource, the frequency domain units occupied by the first DM-RS are PRB 10-PRB 13, and the frequency domain units occupied by the SRS are PRB 12-PRB 15. For another example, the frequency domain units PRB 10-PRB 19 occupied by the first uplink physical resource, the frequency domain units occupied by the first DM-RS are PRB 10-PRB 13, and the frequency domain units occupied by the SRS are PRB 10-PRB 15. Optionally, the frequency domain unit of the SRS resource includes a portion of the frequency domain units of the first uplink physical resource that are not occupied by the first DM-RS. Optionally, the frequency domain unit occupied by the SRS includes at least a portion of the frequency domain units not occupied by the first DM-RS in the frequency domain units of the first uplink physical resource. The frequency domain unit occupied by the DM-RS and the frequency domain unit occupied by the SRS are complemented in frequency domain, so that channel information of more frequency domain units in the frequency domain unit of the first uplink physical resource can be obtained, and the demodulation of the first data information transmitted on the first uplink physical resource is facilitated.

Optionally, the frequency domain unit occupied by the first DM-RS does not completely overlap with the frequency domain unit occupied by the SRS, that is, at least part of the frequency domain units occupied by the SRS do not include any frequency domain unit occupied by the first DM-RS, for example, the frequency domain unit occupied by the first SRS is PRB 10-PRB 15, the frequency domain unit occupied by the first DM-RS is PRB 13-PRB 16, and the PRB 10-PRB 12 does not include any frequency domain unit occupied by the first DM-RS. For another example, if the frequency domain units occupied by the first SRS are PRB10 to PRB15 and the frequency domain units occupied by the first DM-RS are PRB13 to PRB15, the PRB10 to PRB12 do not include any frequency domain units occupied by the first DM-RS. And/or, at least part of the frequency domain units occupied by the first DM-RS do not contain any frequency domain units occupied by the SRS. In each embodiment of the present application, the frequency domain unit occupied by the SRS has the same meaning as the frequency domain unit of the SRS resource.

The resource pattern used by the SRS resource may be predefined, such as that the SRS occupies only the frequency domain unit occupied by the first DM-RS and the complement of the frequency domain unit occupied by the PUSCH. The configuration may also be performed by higher layer signaling, for example, the higher layer signaling may configure the number and position of the frequency domain units occupied by the SRS and the corresponding frequency hopping bandwidth, where the frequency hopping bandwidth is the number of frequency domain units occupied by the SRS in each OFDM symbol, or may configure the relative value between the number and position of the frequency domain units occupied by the SRS and the number and position of the frequency domain units occupied by the PUSCH, for example, the number of the frequency domain units occupied by the SRS is 1/2, 1/4, etc. of the number of the frequency domain units occupied by the PUSCH, and the starting position of the frequency domain units occupied by the SRS is the starting position or the ending position of the frequency domain units occupied by the PUSCH. The number of frequency domain units occupied by the plurality of SRSs and the absolute value of the positions or the relative value with respect to the PUSCH may be configured through high-layer signaling, that is, the resource pattern of the plurality of SRSs, and then one resource pattern for determining the SRS is selected from the resource patterns of the plurality of SRSs through indication DCI signaling.

If the first DCI includes an SRS trigger request and the SRS trigger request triggers an SRS resource for data demodulation, the number of frequency domain units (or transmission bandwidth) occupied by the first DM-RS is smaller than the number of frequency domain units of the first uplink physical resource. The number of frequency domain units (or transmission bandwidth) occupied by the SRS may be determined according to the first uplink physical resource or further according to the frequency domain units occupied by the first DM-RS. If the first DCI does not include the SRS trigger request and the SRS trigger request triggers the SRS resource for data demodulation, the number of occupied frequency domain units of the first DM-RS is the same as the number of frequency domain units of the first uplink physical resource. The number of frequency domain units occupied by the further SRS is determined based on the number of frequency domain units of the first uplink physical resource and the number of frequency domain units occupied by the first DM-RS associated therewith.

Optionally, whether the first DCI includes an SRS trigger request for triggering an SRS resource for data demodulation is determined by the number N of frequency domain units of the first uplink physical resource. For example, if N is less than a pre-configured value, the SRS trigger request to trigger SRS resources for data demodulation is not included, and if N is greater than or equal to a pre-configured value, the SRS trigger request to trigger SRS resources for data demodulation is not included. The preconfigured value may be a fixed value in a protocol, or may be a value that the network device 101 sends to the terminal device 111 through signaling, where the signaling may be a higher layer signaling, and the higher layer signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high-level signaling may be terminal equipment specific high-level signaling, cell specific high-level signaling, or a group of high-level signaling shared by terminal equipment, which is not limited by the present invention. Or the signaling may be physical layer control signaling, where the physical layer control signaling may be terminal device specific signaling, cell specific signaling, or signaling shared by a group of terminal devices, which is not limited by the present invention.

Optionally, the number and/or frequency domain location of frequency domain units occupied by the SRS, the number and/or location of the occupied OFDM symbols, and the SRS hop bandwidth may be configured by higher layer signaling, such as RRC signaling. Further, the starting position of the frequency domain unit occupied by the SRS is the starting position of the DM-RS not associated with the PUSCH in the frequency domain unit of the PUSCH, so that the network device performs channel estimation on the frequency domain unit not carrying the DM-RS based on the SRS. Alternatively, the number of frequency domain units (or transmission bandwidth) occupied by the SRS may be determined according to the SRS resource pattern configured by the base station through higher layer signaling, as described above, or may be determined according to the SRS resource pattern indicated by the base station through the first DCI.

Optionally, the first signaling is used to indicate the number P of frequency domain units occupied by the SRS, where P is an integer greater than or equal to 1. For example, as shown in fig. 4a, the frequency domain units occupied by SRS are PRBs 16 to 19, i.e. p=4.

Further, the first DCI may further include transmission layer number indication information, where the transmission layer number indication information is used to indicate a layer number of data transmission on the first uplink physical resource, and the number of ports of the SRS is the same as the transmission layer number indicated by the transmission layer number indication information. Further, each port of the SRS corresponds to each transmission layer, that is, the precoding matrix corresponding to each SRS port is the same as the precoding matrix corresponding to each transmission layer. The transmission layer number indication information is further used for indicating the port number of the first DM-RS, and further, the first DCI further includes port indication information of the DM-RS, where the DM-RS port indication information is used for indicating the port number of the first DM-RS. The port of each SRS corresponds to the port of each first DM-RS, that is, the number of ports of the SRS is the same as the number of ports of the first DM-RS, and the precoding matrix corresponding to each SRS port is the same as the precoding matrix corresponding to each DM-RS port.

Optionally, the first signaling is used to indicate a frequency domain position of a frequency domain unit occupied by the SRS. The specific manner is similar to the frequency domain location indicating the frequency domain unit occupied by the first DM-RS, and is not limited herein.

Alternatively, the number P of frequency domain units occupied by the SRS and/or the frequency domain position of the frequency domain units occupied by the SRS may be carried in step S401.

Optionally, the network device or the terminal device may determine a frequency domain unit occupied by the first DM-RS according to the frequency domain unit of the SRS resource; alternatively, the frequency domain unit of the SRS resource may be determined according to the frequency domain unit occupied by the first DM-RS.

Alternatively, the SRS may occupy one time domain unit in the second period of time or occupy a plurality of time domain units in the second period of time. The invention is not limited. For example, as shown in fig. 4b, assuming that the second period is a Slot, the Slot contains 14 OSs, one time domain unit corresponds to one OS, the SRS may occupy the last OS, or the last two OSs, of the second period. When the SRS occupies a plurality of time domain units, the frequency domain units occupied by the SRS on different time domain units may be different. The specific occupation of several OSs and/or which OS may be fixed in the protocol, or signaled to the terminal device, and specific signaling may refer to the configuration manner of other parameters in the embodiment of the present invention, which is not described in detail.

Alternatively, the precoding adopted by the first DM-RS and the precoding adopted by the SRS may be different, and the uplink data transmitted on the first uplink physical resource may adopt both the precoding of the first DM-RS and the precoding of the SRS. Specifically, the uplink data on the first uplink physical resource, which is the same as the frequency domain unit occupied by the first DM-RS, adopts the precoding same as the first DM-RS, and the uplink data on the first uplink physical resource, which is the same as the frequency domain unit occupied by the SRS, adopts the precoding same as the SRS; alternatively, assuming that there are N OSs in the first period, the uplink data transmitted on the first N/2 OSs uses the same precoding as the first DM-RS, and the uplink data transmitted on the second N/2 OSs uses the same precoding as the SRS. In this way, the spatial diversity gain can be improved.

S403, the terminal device 111 sends the first data information and the first DM-RS to the network device 101 on the first uplink physical resource of the first period.

Further, the terminal device 111 transmits the SRS in the second period. Specifically, the terminal device 111 transmits the SRS on the frequency domain unit and the time domain unit occupied by the SRS in the second period.

The operation of the network device 101 in S403 may be performed by the transceiver 202 or by the processor 201 through the transceiver 202. The operation of the terminal device 111 in S403 may be performed by the transceiver 301 or by the processor 304 through the transceiver 301.

Specifically, the terminal device 111 uses a time domain unit in a first period occupied by the first DM-RS to send the first DM-RS, and the terminal device 111 uses a time domain unit in the first uplink physical resource, which is not occupied by the first DM-RS, to send the first data information. For example, as shown in fig. 4a, assuming that the first time period is the same as the second time period, the frequency domain units PRB 10-PRB 19 occupied by the first uplink physical resource, the occupied time domain units are OS 0-OS 3 of the first time period (time slot), the frequency domain units occupied by the first DM-RS are PRB 10-PRB 13, the occupied time domain units are OS0 of the first time period (time slot), the frequency domain units occupied by the SRS are PRB 16-PRB 19, the occupied time domain units are OS13 of the first time period (time slot), and the terminal device 111 uses the frequency domain units PRB 10-PRB 19 in the first time period, and the time domain units OS 1-OS 12 to transmit the first data information. For another example, assuming that the first time period is different from the second time period, the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, the occupied time domain units are OS0 to OS3 in the first time period (time slot), the frequency domain units occupied by the first DM-RS are PRB10 to PRB13, the occupied time domain units are OS0 in the first time period (time slot), the frequency domain units occupied by the SRS are PRB16 to PRB19, the occupied time domain units are OS13 in the second time period (time slot), and the terminal device 111 uses the frequency domain units PRB10 to PRB19 in the first time period and the time domain units OS1 to OS13 to transmit the first data information. The first data information may be user data, or buffer status information, or higher layer signaling information, such as RRC layer signaling. The present invention does not limit the content and type of the first data information.

Optionally, before step 403, the terminal device 111 or the network device 101 determines whether the number N of frequency domain units of the first uplink physical resource is greater than or equal to a pre-configured value, and if N is greater than or equal to the pre-configured value, the terminal device 111 or the network device 101 determines that M < N. The preconfigured value may be a fixed value in a protocol, or may be a value that the network device 101 sends to the terminal device 111 through signaling, where the signaling may be a higher layer signaling, and the higher layer signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high layer signaling may be UE specific high layer signaling, cell specific high layer signaling, or high layer signaling shared by a group of terminal devices, which is not limited by the present invention. Or the signaling may be physical layer control signaling, where the physical layer control signaling may be terminal device specific signaling, cell specific signaling, or signaling shared by a group of terminal devices, which is not limited by the present invention. The operations of network device 101 may be performed by processor 201. The operation of the terminal device 111 in S402 may be performed by the processor 304.

Optionally, the physical antenna port for transmitting the SRS is the same as the physical antenna port for transmitting the first DM-RS, and/or the precoding matrix used for transmitting the SRS is the same as the precoding matrix used for transmitting the first DM-RS, and/or the spatial filtering information of the SRS is the same as the spatial filtering information of the first DM-RS, and/or the number of ports of the SRS is the same as the number of ports of the first DM-RS, and the ports of the SRS are mapped to the ports of the first DM-RS one by one. The first DCI includes indication information of the number of transmission layers, each port of the SRS corresponds to each transmission layer, that is, a precoding matrix corresponding to each SRS port is the same as a precoding matrix corresponding to each transmission layer, which means that physical antenna ports of the same terminal equipment are used for transmitting each SRS port and transmitting data of each transmission layer, and phase weights (co-phasing) between the physical antenna ports are the same. The transmission layer number indication information is further used for indicating the port number of the first DM-RS, and further, the first DCI further includes port indication information of the DM-RS, where the DM-RS port indication information is used for indicating the port number of the first DM-RS. The port of each SRS corresponds to the port of each first DM-RS, that is, the number of ports of the SRS is the same as the number of ports of the first DM-RS, and the precoding matrix corresponding to each SRS port is the same as the precoding matrix corresponding to each DM-RS port. Further, the transmission beam (spatial filter information) used for transmitting the first DM-RS and the corresponding uplink data may be notified by the first DCI, and the transmission beam (spatial filter information) used for transmitting the SRS may be notified by the first DCI.

S404, the network device 101 transmits the second DCI to the terminal device 111. Accordingly, terminal device 111 receives the second DCI.

Step S404 is optional.

The operations of the network device 101 in S404 may be performed by the transceiver 202 or by the processor 201 through the transceiver 202. The operation of the terminal device 111 in S404 may be performed by the transceiver 301 or by the processor 304 through the transceiver 301.

Specifically, the second DCI includes information of a second uplink physical resource of the third period. The meaning of the third period is similar to that of the first period, and will not be described herein. The information of the second uplink physical resource is similar to the information of the first uplink physical resource, and will not be described herein. The third time period follows the first time period, e.g., the third time period is a time period adjacent to the first time period after the first time period. For another example, the third period is a period of time after and separated from the first period by Y, where Y is a positive integer, i.e., if the first period is denoted as period n, the third period may be denoted as period n+y. Assuming that y=1, the third period is separated from the first period by 1 period, i.e., if the first period is denoted as period n, the third period may be denoted as period n+2.

Further, at least a portion of the frequency domain elements of the second uplink physical resource overlap with at least a portion of the frequency domain elements of the first uplink physical resource. For example, as shown in fig. 4c, it is assumed that the first period is a period n, the third period is a period n+3, PRBs (PRB 10 to PRB 19) indicated by filled boxes in the first period are frequency domain units of the first uplink physical resource, PRBs (PRB 11 to PRB 17) indicated by filled boxes in the third period are frequency domain units of the second uplink physical resource, PRBs indicated by filled boxes in the period n+1 are frequency domain units of the uplink physical resource in the period n+1, and PRBs indicated by filled boxes in the period n+2 are frequency domain units of the uplink physical resource in the period n+2. For another example, the frequency domain unit of the first uplink physical resource includes the frequency domain unit of the second uplink physical resource.

Optionally, the second DCI may further include a number M ', M' of frequency domain units occupied by the second DM-RS being an integer greater than or equal to 1. Wherein M 'is less than N and M' is less than M. Wherein the meaning and configuration of M' are similar to those of M, and are not described herein. Because the second uplink physical resource and the first uplink physical resource are partially overlapped in the frequency domain, namely, certain channel correlation exists, when the second uplink physical resource is used for uplink data transmission, the frequency domain density of the DM-RS corresponding to the uplink data transmitted on the second uplink physical resource can be reduced, so that the transmission power of the DM-RS corresponding to the uplink data transmitted on the second uplink physical resource can be further improved, the transmission performance of the DM-RS is ensured, the channel estimation is performed better, and the decoding performance of the uplink data information is finally ensured.

Further, the second DCI may further include a frequency domain location of a frequency domain resource occupied by the second DM-RS. The frequency domain position of the frequency domain resource occupied by the second DM-RS is similar to the frequency domain position meaning and configuration mode of the frequency domain resource occupied by the first DM-RS, and will not be described herein.

The second uplink physical resource includes a PUSCH resource and/or a PUCCH resource. The invention is not limited.

The content carried by the second DCI may refer to the content carried by the first DCI, which is not described herein.

The second DCI may be the same DCI as the first DCI or may be different DCI, and the present invention is not limited.

S405, the terminal device 111 transmits the second data information and the second DM-RS to the network device 101 on the second uplink physical resource of the third period. Accordingly, the network device 101 receives the second data information and the second DM-RS on the second uplink physical resource of the third period.

Step S405 is optional.

The operation of the network device 101 in S405 may be performed by the transceiver 202 or by the processor 201 through the transceiver 202. The operation of the terminal device 111 in S402 may be performed by the transceiver 301 or by the processor 304 through the transceiver 301.

The second data information has a meaning similar to that of the first data information, and will not be described in detail herein.

Specifically, the number M' of frequency domain units occupied by the second DM-RS is smaller than M.

Alternatively, when the interval of the third period of time from the first period of time is less than or equal to the preconfigured value, the terminal device 111 determines that M' is less than M. For example, the preconfigured value is 3, i.e. when the first time period is less than or equal to 3 from the third time period, the terminal device 111 determines that M' is less than M. The preconfigured value may be a fixed value in a protocol, or may be a value that is sent by the network device 101 to the terminal device 111 through signaling, where the signaling may be a higher layer signaling, and the higher layer signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high-level signaling may be terminal equipment specific high-level signaling, cell specific high-level signaling, or a group of high-level signaling shared by terminal equipment, which is not limited by the present invention. Or the signaling may be physical layer control signaling, where the physical layer control signaling may be terminal device specific signaling, cell specific signaling, or signaling shared by a group of terminal devices, which is not limited by the present invention. Further, the transmission parameters of the first uplink physical resource are the same as the transmission parameters of the second uplink physical resource. At this time, since the second uplink physical resource has a certain channel correlation with the first uplink physical resource, when the second uplink physical resource is used for uplink data transmission, the frequency domain density of the DM-RS corresponding to the uplink data transmitted on the second uplink physical resource can be reduced, so that the transmission power of the DM-RS corresponding to the uplink data transmitted on the second uplink physical resource can be further improved, the performance of the DM-RS is ensured, the channel estimation is performed better, and the decoding performance of the uplink data information is finally ensured.

Alternatively, when at least one period, or all periods, or K consecutive periods, or K cumulative periods between the first period and the third period are allocated uplink physical resources (such as PUSCH), the terminal device 111 determines that M' is less than M, where K is an integer greater than or equal to 0. For example, as shown in fig. 4c, the terminal device 111 has uplink physical resources in each of the first to third time periods (time period n) to (time period n+3). Further, at least a portion of the frequency domain unit of the second uplink physical resource overlaps with at least a portion of the frequency domain unit of the first uplink physical resource, and at least a portion of the frequency domain unit of the second uplink physical resource overlaps with at least a portion of the frequency domain unit of the uplink physical resource over at least one of the first to third time periods. Further, the frequency domain unit of the first uplink physical resource in the first time period includes the frequency domain unit of the second uplink physical resource in the third time period, and the frequency domain unit of the uplink physical resource in at least one time period between the first time period and the third time period includes the frequency domain unit of the second uplink physical resource in the third time period. Further, the frequency domain unit of the first uplink physical resource, the frequency domain unit of the second uplink physical resource, and the frequency domain unit of the uplink physical resource in at least one of the first to third time periods are the same. Further, the interval between the first time period and the third time period is greater than a preconfigured value, or the number of at least one time period between the first time period and the third time period is greater than a preconfigured value and the interval between the first time period and the third time period is less than or equal to a preconfigured value. The one or more pre-configured values may be fixed in a protocol, or may be a value that the network device 101 sends to the terminal device 111 through signaling, where the signaling may be at a higher layer, and the higher layer signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited by the present invention. The high-level signaling may be terminal equipment specific high-level signaling, cell specific high-level signaling, or a group of high-level signaling shared by terminal equipment, which is not limited by the present invention. Or the signaling may be physical layer control signaling, where the physical layer control signaling may be terminal device specific signaling, cell specific signaling, or signaling shared by a group of terminal devices, which is not limited by the present invention. Further, the transmission parameter of the first uplink physical resource is the same as the transmission parameter of the uplink physical resource in at least one of the first to third time periods, and the transmission parameter of the first uplink physical resource is the same as the transmission parameter of the second uplink physical resource. Specifically, the transmission parameters include transmission layer number information, that is, the dimensions of channel matrices for data transmission on the first uplink physical resource and the second uplink physical resource are the same, so that uplink data transmitted on the second uplink physical resource can be estimated by using the first DM-RS transmitted on the first uplink physical resource. The transmission parameters may also include the size and the position of the frequency domain resource occupied by the data transmission, and when the frequency domain resources occupied by the first uplink physical resource and the second uplink physical resource are the same, the first DM-RS transmitted on the first uplink physical resource may be used to estimate the uplink data transmitted on the second uplink physical resource, so as to further reduce the frequency domain unit occupied by the DM-RS transmitted on the second uplink physical resource. Because the second uplink physical resource, the first uplink physical resource and the uplink physical resource in at least one time period between the first time period and the third time period have a certain channel correlation, the terminal equipment 111 can perform uplink transmission in a continuous time period, so that the density of the DM-RS can be reduced when the subsequent uplink physical resource is used for uplink transmission, the transmitting power of the DM-RS can be further improved, the performance of the DM-RS is ensured, and meanwhile, the channel estimation can be performed by combining the DM-RSs in a plurality of time periods, thereby performing the channel estimation better and finally ensuring the decoding performance of uplink data information. For example, as shown in fig. 4c, DM-RS in a period of n+1 to n+2 occupies 12 PRBs to 18 PRBs for 7 PRBs, DM-RS in a period of n+3 occupies 15 PRBs to 17 PRBs for 3 PRBs, and the network device 101 may perform joint channel estimation with DM-RS in n+3 and DM-RS in n+1 to n+2, so as to receive data information in n+3.

Optionally, the terminal device sends DM-RS and data information on an uplink physical resource of at least one time slot between the first time slot and the third time slot, and a time interval between any two time slots in the at least one time slot, where the time interval between any two time slots in the first time slot and the third time slot is less than K, where K is an integer greater than or equal to 0.

Further, the terminal device 111 transmits DM-RS and data information on the uplink physical resource in at least one of the first period and the third period. For example, as shown in fig. 4c, if the terminal device 111 has uplink physical resources in each of the first to third time periods (time period n) to (time period n+3), the terminal device 111 may perform uplink transmission in consecutive time periods.

By the method, the time correlation and the frequency correlation of the uplink physical resources in a plurality of time periods are utilized, and the density of the DM-RS is reduced, so that the DM-RS can be transmitted with higher power, the performance of the DM-RS is ensured, the channel estimation is performed better, and finally the decoding performance of the uplink data information is ensured.

Fig. 5 shows a flow chart of a method according to a second embodiment of the invention. The implementation method comprises the following steps:

S501 is similar to S401 and will not be described here.

S502, the network device 101 transmits downlink control information (Downlink Control Information, DCI) to the terminal device 111. Accordingly, terminal device 111 receives the DCI.

The DCI includes information of the first uplink physical resource of the first period of time, and the specific manner may refer to the description in step S402.

The DCI may further include an SRS trigger request, and the specific manner may refer to the description in step S402.

When the first uplink physical resource includes PUSCH and the transmission mode of PUSCH is a transmission mode based on a non-codebook, the SRS resource selection indication (SRS resource Indicator, SRI) in the DCI may indicate the PUSCH and the precoding scheme and the transmission layer number of the corresponding DM-RS, and the SRI field may be further used to trigger the SRS resource corresponding to the SRI. Specifically, the SRI indicates the SRS resource number, and the terminal device 111 may determine configuration information of the SRS resource corresponding to the SRS resource number indicated by the SRI, and the precoding adopted by the SRS transmitted on the SRS resource is the same as the precoding adopted by the SRS transmitted on the SRS resource corresponding to the SRS resource number indicated by the SRI and used by the SRS resource that is the closest to the SRI in time. The SRS resource is associated with a first uplink physical resource.

When the first uplink physical resource includes PUSCH and the transmission mode of PUSCH is a codebook-based transmission mode, SRS resource selection indication (SRS resource Indicator, SRI) +rank indication (Transmission Rank Indicator, TRI) +precoding indication (Transmission Precoding Matrix Indicator, TPMI) Field (Bit Field) in DCI is used to indicate a precoding scheme for transmitting the first DM-RS associated with PUSCH. The sri+tri+tpmi field may also indicate a precoding scheme of an SRS associated with a PUSCH at the same time, where the SRS associated with a PUSCH refers to channel estimation that the SRS is used for the PUSCH demodulation, that is, the precoding scheme of a first DM-RS and a PUSCH associated with the first DM-RS is the same as the precoding scheme of the SRS, and the precoding scheme refers to physical antenna ports, the number of antenna ports, phase weighting among antenna ports, and the like used for signal or data transmission. Or, a field is newly added in the DCI to indicate the precoding scheme and the transmission port of the SRS associated with the PUSCH.

When the first uplink physical resource includes PUSCH and the transmission mode of PUSCH is a transmission mode based on a non-codebook, the SRI field in DCI is used to indicate that one or more SRS resources are selected from the SRS resources for channel measurement of non-codebook transmission of L single ports, the number of antenna ports for transmitting PUSCH and DM-RS associated with PUSCH and the number of antenna ports of SRS indicated by the SRI field and the precoding scheme of each port are the same, and L is a positive integer. The SRI field may also indicate a precoding scheme of SRS associated with PUSCH at the same time, and SRS associated with PUSCH means channel estimation that the SRS is used for the PUSCH demodulation, that is, the precoding scheme of the first DM-RS and PUSCH associated with the first DM-RS is the same as the precoding scheme of SRS.

When the first uplink physical resource includes PUSCH and the transmission mode of PUSCH is codebook-based transmission, when DCI does not include a field for indicating a precoding scheme of PUSCH and DM-RS associated with PUSCH, such as DCI is DCI Format0_0 (Format 0_0), i.e., compact DCI Format, the terminal device 111 may autonomously determine antenna ports of PUSCH and DM-RS associated with PUSCH and a precoding matrix. Meanwhile, the transmission layer number of the indication PUSCH and the DM-RS associated with the PUSCH is not contained in the DCI, so that the PUSCH scheduled by the DCI format0_0 adopts single stream transmission. Both compact DCI formats and normal DCI formats are used for uplink data scheduling, and the compact DCI formats carry fewer bits and fields than the normal DCI formats.

The DCI in S502 may be the same DCI as the first DCI in S402 or may be different DCI. The invention is not limited.

S503, the terminal device 111 sends the first data information and the first DM-RS to the network device 101 on the first uplink physical resource of the first period.

Further, the terminal device 111 transmits the SRS in the second period. Specifically, the terminal device 111 transmits the SRS on the frequency domain unit and the time domain unit in the second period occupied by the SRS.

The operation of the network device 101 in S503 may be performed by the processor 201 through the transceiver 202. The operation of the terminal device 111 in S503 may be performed by the processor 304 through the transceiver 301.

Step S503 is similar to S403, and will not be described here.

In the embodiment of the invention, the precoding scheme of the SRS is indicated to be the same as the precoding scheme of the associated PUSCH and DM-RS, so that the SRS receiving performance can be improved, and the SRS is used for receiving the channel estimation of the associated PUSCH and the receiving performance of the PUSCH.

The present examples also provide a processor-readable storage medium comprising instructions that, when executed on a processor, implement the above-described method. When the processor executes the method of the embodiment of the present invention, the sending action may be that the input/output port of the processor outputs a baseband signal carrying information to be sent, and the receiving action may be that the input/output port of the processor receives the baseband signal carrying information to be received. It will be appreciated that the processor-readable storage medium provided by the embodiments of the present invention may also be a computer-readable storage medium.

The present examples also provide an apparatus (e.g., an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above-described methods. The device comprises a processor and a memory connected with the processor, wherein the memory is used for storing instructions, and the processor is used for reading and executing the instructions stored in the memory, so that the device executes the method. The apparatus for implementing the description herein may be a stand-alone device or may be part of a larger device. The device may be (i) a free-standing IC; (ii) A set of one or more ICs that may include a memory IC for storing data and/or instructions; (iii) RFICs, such as RF receivers or RF transmitter/receivers; (iv) an ASIC, such as a mobile station modem; (v) modules that may be embedded within other devices; (vi) A receiver, cellular telephone, wireless device, handset, or mobile unit; (vii) others, and so forth.

The method and the device provided by the embodiment of the invention can be applied to terminal equipment or access network equipment (or network equipment) (which can be collectively called wireless equipment). The terminal device or access network device or wireless device may include a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. In addition, in the embodiment of the present invention, the embodiment of the present invention is not limited to the specific structure of the execution body of the method, as long as the communication can be performed by the method of transmitting a signal according to the embodiment of the present invention by running the program in which the code of the method of the embodiment of the present invention is recorded, and for example, the execution body of the method of wireless communication of the embodiment of the present invention may be a terminal device or an access network device, or a functional module in the terminal device or the access network device that can call the program and execute the program.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

Furthermore, various aspects or features of embodiments of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, or magnetic strips, etc.), optical disks (e.g., compact disk, CD, digital versatile disk, digital versatile disc, DVD, etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory, EPROM), cards, sticks, or key drives, etc. Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., 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, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on 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.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art or a part of the technical solution, 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 an access network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a specific implementation of the embodiment of the present invention, but the protection scope of the embodiment of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the embodiment of the present invention, and the changes or substitutions are covered by the protection scope of the embodiment of the present invention.

Claims

1. A method of information transmission, comprising:

receiving first Downlink Control Information (DCI), wherein the first DCI comprises information of first uplink physical resources of a first time period, and the first DCI further comprises a reference signal trigger request, wherein the reference signal trigger request is used for indicating that the reference signal is sent in a second time period, and/or the reference signal trigger request is used for indicating a frequency domain unit occupied by the reference signal sent in the second time period, and/or the reference signal trigger request is used for indicating a resource Pattern (Pattern) used for sending the reference signal in the second time period, and/or the reference signal trigger request is used for indicating that a first demodulation reference signal (DM-RS), first data information and spatial filtering information used for sending the reference signal in the second time period;

And transmitting a first DM-RS and first data information on the first uplink physical resource, and transmitting a reference signal on a reference signal resource of the second time period, wherein the number M of frequency domain units occupied by the first DM-RS is smaller than the number N of frequency domain units of the first uplink physical resource, at least one part of the frequency domain units of the reference signal resource overlaps with at least one part of the frequency domain units of the first uplink physical resource, and M and N are integers which are larger than or equal to 1.

2. The method of claim 1, wherein the frequency domain elements of the reference signal resource comprise at least a portion of the frequency domain elements of the first uplink physical resource that are not occupied by the first DM-RS.

3. The method of claim 1 or 2, further comprising, prior to receiving the DCI:

configuration information of the reference signal is received, wherein the configuration information is used for indicating that the reference signal is used for demodulating data.

4. The method according to claim 1 or 2, characterized in that the method further comprises:

judging whether the number N of the frequency domain units of the first uplink physical resource is larger than a preset value or not;

And if the number N of the frequency domain units of the first uplink physical resource is larger than the preconfigured value, determining that the number M of the frequency domain units occupied by the first DM-RS is smaller than the number N of the frequency domain units of the first uplink physical resource.

5. The method according to claim 1 or 2, wherein the first time period and the second time period belong to the same time period or the second time period is subsequent to the first time period.

6. The method according to claim 1 or 2, wherein the physical antenna ports for transmitting the reference signal are the same as the physical antenna ports for transmitting the first DM-RS, and/or the precoding matrix used for transmitting the reference signal is the same as the precoding matrix used for transmitting the first DM-RS, and/or the spatial filtering information of the reference signal is the same as the spatial filtering information of the first DM-RS, and/or the number of ports of the reference signal is the same as the number of ports of the first DM-RS, and the ports of the reference signal are mapped one-to-one with the ports of the first DM-RS.

7. The method according to claim 1 or 2, comprising:

receiving a second DCI including information of a second uplink physical resource of a third time period, the third time period being subsequent to the first time period, at least a portion of frequency domain units of the second uplink physical resource overlapping at least a portion of frequency domain units of the first uplink physical resource;

And transmitting a second DM-RS and second data information on the second uplink physical resource, wherein the number of frequency domain units occupied by the second DM-RS is smaller than the number M of frequency domain units occupied by the first DM-RS.

8. The method according to claim 7, comprising:

and transmitting the DM-RS and the data information on the uplink physical resource of at least one time period between the first time period and the third time period.

9. The method according to claim 1 or 2, comprising:

the first DCI further includes a first signaling, where the first signaling is used to indicate the number M and the frequency domain position of the frequency domain units occupied by the first DM-RS, and/or the number M and the frequency domain position of the frequency domain units occupied by the reference signal.

10. The method of claim 9 wherein the number M and frequency domain locations of frequency domain units occupied by the first DM-RS comprises:

m consecutive frequency domain units in the first uplink physical resource starting from a lowest frequency; or alternatively

M consecutive frequency domain units in the first uplink physical resource starting from a highest frequency; or alternatively

M discrete frequency domain units in the first uplink physical resource.

11. The method of claim 9, wherein the frequency domain unit occupied by the reference signal is determined according to the frequency domain unit occupied by the first DM-RS; or alternatively

And the frequency domain unit occupied by the first DM-RS is determined according to the frequency domain unit occupied by the reference signal.

12. The method according to claim 1 or 2, comprising:

the first DCI further includes transmission layer number indication information, where the transmission layer number indication information is used to indicate a layer number of data transmission on the first uplink physical resource, and the number of ports of the reference signal is the same as the transmission layer number indicated by the transmission layer number indication information.

13. A method of information reception, comprising:

transmitting first downlink control information, DCI, the first DCI including information of a first uplink physical resource of a first period, the first DCI further including a reference signal trigger request, wherein the reference signal trigger request is used to instruct transmission of the reference signal in a second period, and/or the reference signal trigger request is used to instruct a frequency domain unit occupied by transmission of the reference signal in the second period, and/or the reference signal trigger request is used to instruct a resource Pattern (Pattern) used for transmission of the reference signal in the second period, and/or the reference signal trigger request is used to instruct transmission of a first demodulation reference signal, DM-RS, first data information, and spatial filtering information used for transmission of the reference signal in the second period;

And receiving a first DM-RS and first data information sent by a terminal device on the first uplink physical resource, and receiving a reference signal on a reference signal resource of the second time period, wherein the number M of frequency domain units occupied by the first DM-RS is smaller than the number N of frequency domain units of the first uplink physical resource, at least one part of the frequency domain units of the reference signal resource overlaps with at least one part of the frequency domain units of the first uplink physical resource, and M and N are integers which are larger than or equal to 1.

14. The method of claim 13, wherein the frequency domain units of the reference signal resource comprise at least a portion of the frequency domain units of the first uplink physical resource that are not occupied by the first DM-RS.

15. The method of claim 13 or 14, further comprising, prior to transmitting the DCI:

and transmitting configuration information of the reference signal, wherein the configuration information is used for indicating that the reference signal is used for demodulating data.

16. The method according to claim 13 or 14, characterized in that the method further comprises:

17. The method according to claim 13 or 14, wherein the first time period and the second time period belong to the same time period or the second time period is subsequent to the first time period.

18. The method according to claim 13 or 14, wherein the first DCI is further used to instruct the terminal device that a physical antenna port for transmitting the reference signal is the same as a physical antenna port for transmitting the first DM-RS, and/or a precoding matrix used for transmitting the reference signal is the same as a precoding matrix used for transmitting the first DM-RS, and/or spatial filtering information of the reference signal is the same as spatial filtering information of the first DM-RS, and/or a number of ports of the reference signal is the same as a number of ports of the first DM-RS, and ports of the reference signal are mapped one-to-one with ports of the first DM-RS.

19. The method according to claim 13 or 14, comprising:

Transmitting a second DCI including information of a second uplink physical resource of a third period of time, the third period of time being subsequent to the first period of time, at least a portion of frequency domain units of the second uplink physical resource overlapping at least a portion of frequency domain units of the first uplink physical resource;

and receiving a second DM-RS and second data information on the second uplink physical resource, wherein the number of frequency domain units occupied by the second DM-RS is smaller than the number M of frequency domain units occupied by the first DM-RS.

20. The method according to claim 19, comprising:

and receiving DM-RS and data information on the uplink physical resource of at least one time period between the first time period and the third time period.

21. The method according to claim 13 or 14, comprising:

22. The method of claim 21 wherein the number M and frequency domain locations of frequency domain units occupied by the first DM-RS comprises:

M discrete frequency domain units in the first uplink physical resource.

23. The method of claim 22, wherein the frequency domain unit occupied by the reference signal is determined according to the frequency domain unit occupied by the first DM-RS; or alternatively

24. The method according to claim 13 or 14, comprising:

25. A communication device comprising a processor and a transceiver coupled to the processor;

the processor is configured to receive, by the transceiver, first downlink control information DCI, the first DCI including information of a first uplink physical resource of a first time period, the first DCI further including a reference signal trigger request, where the reference signal trigger request is configured to instruct transmission of the reference signal in a second time period, and/or the reference signal trigger request is configured to instruct a frequency domain unit occupied by transmission of the reference signal in the second time period, and/or the reference signal trigger request is configured to instruct a resource Pattern (Pattern) used for transmission of the reference signal in the second time period, and/or the reference signal trigger request is configured to instruct transmission of a first demodulation reference signal DM-RS, first data information, and spatial filtering information used for transmission of the reference signal in the second time period;

The processor is further configured to send, by using the transceiver, a first DM-RS and first data information on the first uplink physical resource, send, in the second period of time, a reference signal, where the number M of frequency domain units occupied by the first DM-RS is smaller than the number N of frequency domain units of the first uplink physical resource, at least a portion of the frequency domain units occupied by the reference signal overlaps with at least a portion of the frequency domain units of the first uplink physical resource, and M, N are integers greater than or equal to 1.

26. The apparatus of claim 25, wherein the frequency domain elements occupied by the reference signal comprise at least a portion of the frequency domain elements of the first uplink physical resource that are not occupied by the first DM-RS.

27. The apparatus of claim 25 or 26, wherein prior to receiving the DCI,

the processor is further configured to receive, by the transceiver, configuration information of the reference signal, the configuration information being used to indicate that the reference signal is used to demodulate data.

28. The apparatus of claim 25 or 26, wherein the device comprises a plurality of sensors,

the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is greater than a preset value;

29. The apparatus of claim 25 or 26, wherein the first time period and the second time period belong to the same time period or the second time period is subsequent to the first time period.

30. The apparatus of claim 25 or 26, wherein a physical antenna port for transmitting the reference signal is the same as a physical antenna port for transmitting the first DM-RS, and/or a precoding matrix used for transmitting the reference signal is the same as a precoding matrix used for transmitting the first DM-RS, and/or spatial filtering information of the reference signal is the same as spatial filtering information of the first DM-RS, and/or a number of ports of the reference signal is the same as a number of ports of the first DM-RS, and ports of the reference signal are mapped one-to-one with ports of the first DM-RS.

31. The apparatus according to claim 25 or 26, comprising:

The processor is configured to receive, by the transceiver, a second DCI including information of a second uplink physical resource of a third time period, where the third time period follows the first time period, at least a portion of frequency domain units of the second uplink physical resource overlapping at least a portion of frequency domain units of the first uplink physical resource;

the processor is further configured to send, through the transceiver, a second DM-RS and second data information on the second uplink physical resource, where the number of frequency domain units occupied by the second DM-RS is smaller than the number M of frequency domain units occupied by the first DM-RS.

32. The apparatus of claim 31, wherein the device comprises a plurality of sensors,

the processor is configured to send, by the transceiver, DM-RS and data information on an uplink physical resource of at least one time period between the first time period and the third time period.

33. The apparatus according to claim 25 or 26, comprising:

34. The apparatus of claim 33, wherein the number M and frequency domain locations of frequency domain units occupied by the first DM-RS comprise:

m consecutive frequency domain units in the first uplink physical resource starting from a lowest frequency;

m consecutive frequency domain units in the first uplink physical resource starting from a highest frequency;

m discrete frequency domain units in the first uplink physical resource.

35. The apparatus of claim 33, wherein the frequency domain unit occupied by the reference signal is determined according to the frequency domain unit occupied by the first DM-RS; or alternatively

36. The apparatus of claim 25 or 26, wherein the first DCI further includes transmission layer number indication information, where the transmission layer number indication information is used to indicate a layer number of data transmissions on the first uplink physical resource, and the number of ports of the reference signal is the same as the transmission layer number indicated by the transmission layer number indication information.

37. A communication device comprising a processor and a transceiver coupled to the processor;

the processor is configured to send, by the transceiver, first downlink control information DCI, the first DCI including information of a first uplink physical resource of a first time period, the first DCI further including a reference signal trigger request, where the reference signal trigger request is configured to instruct transmission of the reference signal in a second time period, and/or the reference signal trigger request is configured to instruct a frequency domain unit occupied by transmission of the reference signal in the second time period, and/or the reference signal trigger request is configured to instruct a resource Pattern (Pattern) used for transmission of the reference signal in the second time period, and/or the reference signal trigger request is configured to instruct transmission of a first demodulation reference signal DM-RS, first data information, and spatial filtering information used for transmission of the reference signal in the second time period;

The processor is further configured to receive, through the transceiver, a first DM-RS and first data information sent by a terminal device on the first uplink physical resource, receive, in the second period of time, a reference signal, where the number M of frequency domain units occupied by the first DM-RS is smaller than the number N of frequency domain units of the first uplink physical resource, at least a portion of the frequency domain units occupied by the reference signal overlaps with at least a portion of the frequency domain units of the first uplink physical resource, and M, N are integers greater than or equal to 1.

38. The apparatus of claim 37, wherein the frequency domain elements occupied by the reference signal comprise at least a portion of the frequency domain elements of the first uplink physical resource that are not occupied by the first DM-RS.

39. The apparatus of claim 37 or 38, wherein prior to transmitting the DCI,

the processor is configured to send configuration information of a reference signal through the transceiver, where the configuration information is used to indicate that the reference signal is used to demodulate data.

40. The apparatus of claim 37 or 38, wherein the device comprises a plurality of sensors,

And if the number of the frequency domain units of the first uplink physical resource is larger than the preconfigured value, determining that the number M of the frequency domain units occupied by the first DM-RS is smaller than the number N of the frequency domain units of the first uplink physical resource.

41. The apparatus of claim 37 or 38, wherein the first time period and the second time period belong to the same time period or the second time period is subsequent to the first time period.

42. The apparatus of claim 37 or 38, wherein the first DCI is further configured to instruct the terminal device that a physical antenna port for transmitting the reference signal is the same as a physical antenna port for transmitting the first DM-RS, and/or that a precoding matrix used for transmitting the reference signal is the same as a precoding matrix used for transmitting the first DM-RS, and/or that spatial filtering information of the reference signal is the same as spatial filtering information of the first DM-RS, and/or that a port number of the reference signal is the same as a port number of the first DM-RS, and that ports of the reference signal are mapped one-to-one with ports of the first DM-RS.

43. The apparatus of claim 37 or 38, wherein the device comprises a plurality of sensors,

The processor is configured to send, through the transceiver, a second DCI including information of a second uplink physical resource of a third time period, where the third time period is after the first time period, at least a portion of frequency domain units of the second uplink physical resource overlapping with at least a portion of frequency domain units of the first uplink physical resource;

the processor is further configured to receive, by the transceiver, a second DM-RS and second data information on the second uplink physical resource, where the number of frequency domain units occupied by the second DM-RS is less than the number M of frequency domain units occupied by the first DM-RS.

44. The apparatus of claim 43, wherein,

the processor is configured to receive, by the transceiver, DM-RS and data information on an uplink physical resource of at least one time period between the first time period and the third time period.

45. The apparatus of claim 37 or 38, wherein the first DCI further includes first signaling, where the first signaling is used to indicate a number M and a frequency domain location of frequency domain units occupied by the first DM-RS, and/or a number M and a frequency domain location of frequency domain units occupied by the reference signal.

46. The apparatus of claim 43, wherein the number M and frequency domain locations of frequency domain units occupied by the first DM-RS comprise:

m discrete frequency domain units in the first uplink physical resource.

47. The apparatus of claim 44, wherein the frequency domain unit occupied by the reference signal is determined from the frequency domain unit occupied by the first DM-RS; or alternatively

48. The apparatus of claim 37 or 38, wherein the first DCI further includes transport layer number indication information, where the transport layer number indication information is used to indicate a layer number of data transmissions on the first uplink physical resource, and the number of ports of the reference signal is the same as the transport layer number indicated by the transport layer number indication information.

49. A computer readable access medium storing instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-12.

50. A computer readable access medium storing instructions which, when run on a computer, cause the computer to perform the method of any one of claims 13-24.

51. A communication device comprising a processor and a memory coupled to the processor, the memory for storing instructions, the processor for reading and invoking the instructions to perform the method of any of claims 1-12.

52. A communication device comprising a processor and a memory coupled to the processor, the memory for storing instructions, the processor for reading and invoking the instructions to perform the method of any of claims 13-24.