CN110880960B - Sounding reference signal transmission method, terminal equipment and network equipment - Google Patents

Sounding reference signal transmission method, terminal equipment and network equipment Download PDF

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CN110880960B
CN110880960B CN201811034161.7A CN201811034161A CN110880960B CN 110880960 B CN110880960 B CN 110880960B CN 201811034161 A CN201811034161 A CN 201811034161A CN 110880960 B CN110880960 B CN 110880960B
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srs
resource indication
occupied
dci
transmission
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CN110880960A (en
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孙晓东
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Abstract

The embodiment of the invention discloses an SRS transmission method, terminal equipment and network equipment, which are used for solving the problem of poor SRS resource configuration flexibility in the prior art. The method comprises the following steps: receiving DCI, wherein the DCI comprises a resource indication domain, the resource indication domain comprises at least one of a frequency domain resource indication domain and a time domain resource indication domain, the frequency domain resource indication domain is used for indicating frequency domain resources occupied by SRS transmission, and the time domain resource indication domain is used for indicating time domain resources occupied by the SRS transmission; determining resources occupied by the SRS transmission based on the resource indication field; transmitting the SRS over the resources.

Description

Sounding reference signal transmission method, terminal equipment and network equipment
Technical Field
The present application relates to the field of communications, and in particular, to a Sounding Reference Signal (SRS) transmission method, a terminal device, and a network device.
Background
In the existing mobile communication system, resources occupied by the SRS are configured through Radio Resource Control (RRC) signaling, however, reconfiguration of high-level signaling will cause a large delay and poor flexibility of SRS Resource configuration. Therefore, in order to enhance the coverage performance and capacity of the SRS and improve the SRS channel estimation performance, a more flexible SRS resource configuration scheme needs to be supported.
Disclosure of Invention
An object of the embodiments of the present invention is to provide an SRS transmission method, a terminal device, and a network device, so as to solve the problem of poor flexibility of SRS resource configuration in the prior art.
In a first aspect, a method for SRS transmission is provided, which is applied to a terminal device, and the method includes: receiving Downlink Control Information (DCI), wherein the DCI comprises a resource indication domain, the resource indication domain comprises at least one of a frequency domain resource indication domain and a time domain resource indication domain, the frequency domain resource indication domain is used for indicating frequency domain resources occupied by SRS transmission, and the time domain resource indication domain is used for indicating time domain resources occupied by the SRS transmission; determining resources occupied by the SRS transmission based on the resource indication field; transmitting the SRS over the resources.
In a second aspect, a SRS transmission method is provided, and is applied to a network device, and the method includes: sending DCI, wherein the DCI comprises a resource indication domain, the resource indication domain comprises at least one of a frequency domain resource indication domain and a time domain resource indication domain, the frequency domain resource indication domain is used for indicating frequency domain resources occupied by SRS sending, and the time domain resource indication domain is used for indicating time domain resources occupied by the SRS sending; receiving the SRS on the resource indicated by the resource indication field.
In a third aspect, a terminal device is provided, which includes: a receiving module, configured to receive DCI, where the DCI includes a resource indication field, where the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, the frequency domain resource indication field is used to indicate frequency domain resources occupied by SRS transmission, and the time domain resource indication field is used to indicate time domain resources occupied by the SRS transmission; a resource determining module, configured to determine, based on the resource indication field, a resource occupied by the SRS transmission; a sending module, configured to send the SRS on the resource.
In a fourth aspect, a network device is provided, the network device comprising: a sending module, configured to send DCI, where the DCI includes a resource indication field, where the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, the frequency domain resource indication field is used to indicate frequency domain resources occupied by SRS transmission, and the time domain resource indication field is used to indicate time domain resources occupied by the SRS transmission; a receiving module, configured to receive the SRS on the resource indicated by the resource indication field.
In a fifth aspect, a terminal device is provided, which comprises a processor, a memory and a computer program stored on the memory and operable on the processor, and which, when executed by the processor, implements the steps of the SRS transmission method according to the first aspect.
In a sixth aspect, a network device is provided, which comprises a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the SRS transmission method according to the second aspect.
In a seventh aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the SRS transmission method according to the first and second aspects.
In each of the above embodiments of the present invention, the resources occupied by SRS transmission are configured by DCI instead of RRC signaling, DCI configuration is convenient and flexible, and the problems of poor flexibility and large time delay of SRS resource configuration caused by RRC signaling configuration are solved. Meanwhile, the embodiment of the invention can realize the flexible transmission of the SRS by the terminal equipment through a dynamic SRS resource indication mode, thereby being convenient for improving the coverage performance and the capacity of the SRS.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flow diagram of an SRS transmission method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of frequency domain resource indication of an SRS transmission method according to an embodiment of the invention;
fig. 3 is a schematic diagram of time domain resource indication of an SRS transmission method according to an embodiment of the invention;
fig. 4 is a schematic diagram of time division transmission of different signals provided by the SRS transmission method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of discarding different signal collisions provided by an SRS transmission method according to an embodiment of the present invention;
fig. 6 is a schematic flow diagram of an SRS transmission method according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
FIG. 8 is a schematic block diagram of a network device according to one embodiment of the present invention;
fig. 9 is a schematic structural diagram of a terminal device according to another embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS) or a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a 5G System, or a New Radio (NR) System, or a subsequent communication System.
In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), etc., and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.
In the embodiment of the present invention, the network device is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, called an Evolved node B (eNB or eNodeB), in a third Generation (3G) network, called a node B (node B), or a network device in a later Evolved communication system, etc., although the words are not limiting.
As shown in fig. 1, an embodiment of the present invention provides an SRS transmission method 100, which can be applied to a terminal device, and includes the following steps:
s102: receiving DCI, wherein the DCI comprises a resource indication field.
In this step, the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, that is, DCI sent by the network device may only include the frequency domain resource indication field; or only the time domain resource indication domain; a frequency domain resource indication domain and a time domain resource indication domain may also be included simultaneously.
The frequency domain resource indication field can be used for indicating frequency domain resources occupied by SRS transmission; the time domain resource indication field can be used to indicate the time domain resources occupied by the SRS transmission.
The SRS mentioned in the embodiments of the present invention may specifically be an Aperiodic Sounding Reference Signal (AP-SRS), or a Semi-persistent Sounding Reference Signal (SP-SRS).
Optionally, a format of the DCI received in each embodiment of the present invention is the same as a DCI format indicating Physical Uplink Shared Channel (PUSCH) or a Physical Downlink Shared Channel (PDSCH) transmission, that is: the format of the DCI received in this step is a DCI format multiplexing an indication of PUSCH transmission or a DCI format multiplexing an indication of PDSCH transmission.
By the DCI format multiplexing mode, the network equipment is prevented from configuring more DCI formats.
Optionally, the format of the DCI may also be another predefined format, where the mentioned predefined format is different from the DCI format indicating PUSCH or PDSCH transmission, and specifically may be a DCI format newly defined in a subsequent evolved communication system, or another DCI format in an existing communication system, and so on. By adopting the mode that the DCI format is other predefined formats, the flexible realization of the DCI is facilitated.
S104: and determining the resources occupied by the SRS transmission based on the resource indication domain.
The resources occupied by SRS transmission determined in this step may specifically include time domain resources and frequency domain resources, and specifically the following are included:
if only the frequency domain resource indication field is contained in the DCI, the frequency domain resource occupied by the SRS transmission may be determined based on the frequency domain resource indication field. The time domain resources occupied by the SRS transmission are configured by higher layer signaling.
If only the time domain resource indication field is contained in the DCI, the time domain resource occupied by the SRS transmission may be determined based on the time domain resource indication field. The frequency domain resources occupied by the SRS transmission are configured by higher layer signaling.
If the DCI includes the frequency domain resource indication field and the time domain resource indication field, the frequency domain resource occupied by SRS transmission may be determined based on the frequency domain resource indication field, and the time domain resource occupied by SRS transmission may be determined based on the time domain resource indication field.
S106: transmitting the SRS over the resource.
In this embodiment, optionally, other parameters related to SRS transmission may be configured semi-statically through higher layer signaling, where the other parameters include, for example: the maximum comb tooth number and the actual transmission occupied comb tooth number; cyclic shift; the number of symbols occupied by the special sub-frames; a period and time domain offset; starting to occupy a resource block; frequency hopping bandwidth and antenna port, etc. Alternatively, the total bandwidth of SRS transmission may be signaled by higher layer signaling.
According to the SRS transmission method provided by the embodiment of the invention, the resources occupied by the SRS transmission are configured by DCI instead of RRC signaling, the DCI configuration is convenient and flexible, and the problems of poor flexibility and larger time delay of the SRS resource configuration caused by the RRC signaling configuration are solved. Meanwhile, the terminal equipment can realize the flexible transmission of the SRS by a dynamic SRS resource indication mode, and the coverage performance and the capacity of the SRS are conveniently improved.
Optionally, in an embodiment of the present invention, the SRS does not occupy a symbol used for transmission of a DeModulation Reference Signal (DMRS), that is, the symbol used for transmission of the SRS is different from the symbol used for transmission of the DMRS.
Optionally, in this embodiment of the present invention, the DCI may indicate a resource occupied by SRS transmission in at least one carrier. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one carrier, so that the signaling overhead can be saved, meanwhile, the DCI can indicate the resources occupied by the SRS transmission in a cross-carrier manner, and flexible indication is realized.
Optionally, in this embodiment of the present invention, the DCI may indicate resources occupied by SRS transmission in at least one slot or at least one subframe. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one time slot or at least one subframe, and the signaling overhead can be saved.
In the embodiment shown in fig. 1, it is mentioned that the DCI received by the terminal device includes a resource indication field, where the resource indication field may include a frequency domain resource indication field, and thus step S104 in the embodiment shown in fig. 1 may perform the following steps:
and determining at least one of the number of physical resource blocks occupied by the SRS transmission and a starting physical resource block based on the frequency domain resource indication domain. That is, the frequency domain resource indication field may be used to indicate the number of physical resource blocks occupied by SRS transmission (the starting physical resource block may be configured by a higher layer signaling); it can also be used to indicate the starting physical resource block occupied by SRS transmission (the number of physical resource blocks can be configured by higher layer signaling); and the number of the initial physical resource blocks and the number of the physical resource blocks occupied by the SRS transmission can be indicated at the same time.
For a detailed description, reference is made to the embodiment shown in fig. 2. In this embodiment, the terminal device first receives DCI from the network device, where the DCI may be format 0, that is, the DCI multiplexing indicates a DCI format for PUSCH transmission, and the received DCI triggers AP-SRS transmission.
Optionally, a Cyclic Redundancy Check (CRC) of the DCI is scrambled by a first Radio Network Temporary Identity (RNTI), where the first RNTI may be one of:
sounding Reference Signal Radio Network Temporary Identity (SRS-RNTI), Aperiodic triggered Sounding Reference Signal Radio Network Temporary Identity (AP-SRS-RNTI), and Semi-persistent Sounding Reference Signal Radio Network Temporary Identity (SP-SRS-RNTI).
The DCI includes a frequency domain resource indication field, where the frequency domain resource indication field indicates a starting physical resource block position 0 occupied by SRS transmission and a physical resource block number 4 occupied by the SRS transmission, which is specifically shown in fig. 2.
Thus, after receiving the DCI, the terminal device may transmit the AP-SRS on the Physical Resource Block according to the starting Physical Resource Block position 0 indicated by the SRS Resource indication field and the number of occupied Physical Resource blocks 4, that is, transmit the AP-SRS on 4 Physical Resource Blocks (PRB) in total from 0 to 3.
In the embodiment shown in fig. 1, it is mentioned that the received DCI includes a resource indication field, and the resource indication field may include a frequency domain resource indication field, so that step S104 in the embodiment shown in fig. 1 is specifically performed as follows:
determining a frequency hopping bandwidth B occupied by the SRS transmission based on the frequency domain resource indication domainSRSAnd CSRS；
Based on the frequency hopping bandwidth BSRSAnd CSRSFor a detailed description, the following description will be given with reference to a specific embodiment to determine the frequency domain resources occupied by the SRS transmission.
In this embodiment, the terminal device first receives DCI from the network device, where the DCI may be in format 8, that is, the DCI format is a newly defined format, and the received DCI triggers AP-SRS transmission.
Optionally, the CRC of the DCI is scrambled by a first RNTI, where the first RNTI includes one of: SRS-RNTI, AP-SRS-RNTI or SP-SRS-RNTI.
The DCI includes a frequency domain resource indication field indicating a frequency hopping bandwidth B occupied by SRS transmissionSRSIs 0, CSRSIs 0.
Thus, after receiving the DCI, the terminal device can determine the bandwidth B according to the frequency hoppingSRSAnd CSRSAnd obtaining the frequency domain resources occupied by the AP-SRS transmission by the value, namely 96 PRBs (total resource blocks) from 0 to 95, and then sending the AP-SRS on the resource blocks.
In the above embodiments, the number of physical resource blocks occupied by SRS transmission may be a positive integer multiple of n, where n is a positive integer greater than 1, and in a specific embodiment, n is equal to 4. Through the setting, the DCI can simultaneously indicate a plurality of physical resource blocks at one time, so that the signaling overhead is saved.
In the above embodiments, it is mentioned that the DCI includes a resource indication field, and the resource indication field may include a frequency domain resource indication field and a time domain resource indication field at the same time, so that, in addition to the frequency domain resource determination methods described in the foregoing embodiments, step S104 in the embodiment shown in fig. 1 may also be used to determine the time domain resources occupied by SRS transmission, and the following steps are specifically performed:
determining at least one of a number of symbols occupied by the SRS transmission and a starting symbol identifier based on the time domain resource indication field, that is, the time domain resource indication field can be used to indicate the number of symbols occupied by the SRS transmission (the starting symbol identifier can be configured by a higher layer signaling); the number of the symbols can be configured by higher layer signaling; it can also be a starting symbol mark and a number of symbols simultaneously used to indicate the occupation of SRS transmission. For a detailed description, reference is made to the embodiment shown in fig. 3.
In this embodiment, the terminal device first receives DCI from the network device, where the DCI may be in format 8, that is, the DCI format is a newly defined format, and the received DCI triggers AP-SRS transmission.
The CRC of the DCI can be scrambled by adopting SRS-RNTI, AP-SRS-RNTI or SP-SRS-RNTI.
The DCI includes a time domain resource indication field, which indicates a start symbol identifier 0 occupied by SRS transmission and a number of symbols is 4, as shown in fig. 3.
Thus, after receiving the DCI, the terminal device may send the AP-SRS on the four symbols according to the starting symbol identifier 0 and the symbol number 4 indicated by the SRS time domain resource indication field, that is, 4 symbols including 0 to 3.
In the previous embodiments, it is described that the CRC of the DCI received by the embodiment of the present invention is scrambled by the first RNTI. Optionally, the network device may further send a preset DCI, where the CRC of the preset DCI is scrambled by the second RNTI, the preset DCI may be used to indicate a resource occupied by the preset SRS transmission, and the specific indication manner may refer to the SRS transmission method provided in the embodiment of the present invention.
It should be noted that the preset DCI and the preset SRS are only used for distinguishing from the DCI and the SRS in the SRS transmission method provided in the embodiment of the present invention, and the two words of "preset" do not represent specific meanings.
The first RNTI is different from the second RNTI, and specifically, the second RNTI may be an SRS-RNTI, an AP-SRS-RNTI, or another RNTI other than the SP-SRS-RNTI.
Thus, the SRS and the default SRS may be time division multiplexed for transmission, and for a detailed description, the following description will be provided with reference to the embodiment shown in fig. 4.
As shown in fig. 4, the Legacy SRS (LTE R8SRS, that is, the aforementioned preset SRS) and the evolved SRS (LTE Rel-16SRS, that is, the SRS mentioned in the embodiment of the present invention) are transmitted in a time division multiplexing manner, and in one subframe, the Legacy SRS occupies the last symbol for transmission, and the evolved SRS occupies 4 symbols before the last symbol for transmission.
Optionally, if an SRS collides with transmission of a time domain resource occupied by a preset SRS, the SRS is preferentially transmitted, and the preset SRS is not transmitted or discarded; or not transmitting a partial signal in the preset SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol occupied by the SRS.
Optionally, if the SRS and the time domain resource occupied by the preset SRS collide, the preset SRS is preferentially transmitted, and the SRS is not transmitted or dropped; or, not transmitting a partial signal in the SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol for the preset SRS. For the purpose of detailed explanation, reference will be made to the embodiment shown in fig. 5.
As shown in fig. 5, in the time domain resources occupied by the Legacy SRS (LTE R8SRS, that is, the preset SRS) and the evolved SRS (LTE Rel-16SRS, that is, the SRS mentioned in the embodiment of the present invention, and shown in fig. 5, the Enhanced SRS) have at least one symbol overlapping, the Legacy SRS is preferentially transmitted, and all the evolved SRS is discarded.
In the foregoing embodiments, the time domain position counter of the SRS transmission at least includes the symbol identifier occupied by the SRS transmission. Specifically, if the SRS includes an SP-SRS or a periodic sounding reference signal P-SRS, the transmission time domain position of the SP-SRS or the P-SRS may be determined based on the following two formulas:
Figure BDA0001790468240000101
or
Figure BDA0001790468240000102
The above formula 1 is suitable for a Time Division Duplex (TDD) system with an SRS period of 2 ms, and the above formula 2 is suitable for other cases than the above formula 1.
In the above equations 1 and 2:
nSRSrepresenting a time domain location of the SRS transmission;
l represents the position of the SRS in the subframe, namely the symbol mark occupied by the SRS transmission;
nfindicating a radio frame number;
nsindicating the number of time slots in a radio frame;
NSPrepresenting the number of switching points in a wireless frame;
TSRSrepresents a periodicity of the SRS;
Toffseta subframe offset representing the SRS;
Toffset_maxto representToffsetIs measured.
Optionally, for the normal cyclic prefix, a value range of l is at least one of [0, 13] or [0, 12] or [0, 3] or [10, 13] or [9, 12] or [0, 2] or [4, 9] or [11, 13 ];
for extended cyclic prefix, the value range of l is at least one of [0, 11] or [0, 10] or [0, 3] or [8, 11] or [7, 10] or [0, 1] or [3, 7] or [9, 11 ].
The SRS transmission methods introduced in the above embodiments can be applied to a terminal device side, and fig. 6 is a schematic flow chart of the SRS transmission method according to the embodiment of the present invention, and can be applied to a network device side. As shown in fig. 6, the method 600 includes:
s602: and sending DCI, wherein the DCI comprises a resource indication domain, and the resource indication domain comprises at least one of a frequency domain resource indication domain and a time domain resource indication domain.
The frequency domain resource indication domain is used for indicating frequency domain resources occupied by SRS transmission, and the time domain resource indication domain is used for indicating time domain resources occupied by the SRS transmission.
Other disclosed deficiencies of this step may correspond to step S102 of the embodiment shown in fig. 1.
S604: and receiving the SRS on the resource indicated by the resource indication field.
According to the SRS transmission method provided by the embodiment of the invention, the resources occupied by SRS transmission are configured by DCI instead of RRC signaling, the DCI configuration is convenient and flexible, and the problems of poor flexibility and larger time delay of SRS resource configuration caused by RRC signaling configuration are solved. Meanwhile, the terminal equipment can realize the flexible transmission of the SRS by a dynamic SRS resource indication mode, and the coverage performance and the capacity of the SRS are conveniently improved.
Optionally, the resource indication field includes a frequency domain resource indication field, and the frequency domain resource indication field indicates at least one of a starting physical resource block and a number of physical resource blocks occupied by the SRS transmission. That is, the frequency domain resource indication field may be used to indicate the number of physical resource blocks occupied by SRS transmission (the starting physical resource block may be configured by a higher layer signaling); it can also be used to indicate the starting physical resource block occupied by SRS transmission (the number of physical resource blocks can be configured by higher layer signaling); and the number of the initial physical resource blocks and the number of the physical resource blocks occupied by the SRS transmission can be indicated at the same time. Reference may be made in particular to the embodiment shown in figure 2
Optionally, the resource indication field includes a frequency domain resource indication field, and the frequency domain resource indication field indicates a frequency hopping bandwidth B occupied by the SRS transmissionSRSAnd CSRSTo make the terminal device based on the frequency hopping bandwidth BSRSAnd CSRSAnd determining the frequency domain resources occupied by the SRS transmission.
Optionally, the resource indication field includes a time domain resource indication field, and the time domain resource indication field indicates at least one of a number of symbols occupied by the SRS transmission and a starting symbol identifier. That is, the time domain resource indication field may be used to indicate the number of symbols occupied by SRS transmission (the start symbol may be configured by higher layer signaling); a starting symbol identifier (the number of symbols can be configured by higher layer signaling) occupied by SRS transmission can be indicated; it can also be used to indicate the number of symbols and the start symbol identifier occupied by SRS transmission at the same time, which can be seen in the embodiment shown in fig. 3.
Optionally, the number of physical resource blocks occupied by SRS transmission is a positive integer multiple of n, where n is a positive integer greater than 1. In a particular embodiment, n is equal to 4. Through the setting, the DCI can simultaneously indicate a plurality of physical resource blocks at one time, so that the signaling overhead is saved.
Optionally, in this embodiment of the present invention, the DCI may indicate a resource occupied by SRS transmission in at least one carrier. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one carrier, so that the signaling overhead can be saved, meanwhile, the DCI can indicate the resources occupied by the SRS transmission in a cross-carrier manner, and flexible indication is realized.
Optionally, in this embodiment of the present invention, the DCI may indicate resources occupied by SRS transmission in at least one slot or at least one subframe. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one time slot or at least one subframe, and the signaling overhead can be saved.
Optionally, the format of the DCI is the same as a DCI format indicating PUSCH or PDSCH transmission. The format of the DCI received in this step is a DCI format multiplexing an indication of PUSCH transmission or a DCI format multiplexing an indication of PDSCH transmission.
By the DCI format multiplexing mode, the network equipment is prevented from configuring more DCI formats.
Optionally, the format of the DCI is a predefined format, wherein the predefined format is different from a DCI format indicating PUSCH or PDSCH transmission. Specifically, the DCI format newly defined in the subsequent evolved communication system may be another DCI format in the existing communication system, or the like. By adopting the mode that the DCI format is other predefined formats, the flexible realization of the DCI is facilitated.
Optionally, the cyclic redundancy check CRC of the DCI is scrambled by a first RNTI, where the first RNTI includes: SRS-RNTI, AP-SRS-RNTI or SP-SRS-RNTI.
Optionally, the SRS and the preset SRS are time division multiplexed, wherein the resource occupied by the preset SRS transmission is indicated by preset DCI, the CRC of the preset DCI is scrambled by a second RNTI, and the first RNTI is different from the second RNTI.
Optionally, the time domain position counter of the SRS transmission at least includes a symbol identifier occupied by the SRS transmission.
Optionally, as an embodiment, the SRS does not occupy symbols used for DMRS transmission.
The SRS transmission method according to an embodiment of the present invention is described in detail above with reference to fig. 1 to 6. A terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 7.
Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 7, the terminal device 700 includes:
a receiving module 702, configured to receive DCI, where the DCI includes a resource indication field, where the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, the frequency domain resource indication field is used to indicate frequency domain resources occupied by SRS transmission, and the time domain resource indication field is used to indicate time domain resources occupied by the SRS transmission;
a resource determining module 704, configured to determine, based on the resource indication field, a resource occupied by the SRS transmission;
a transmitting module 706 configured to transmit the SRS on the resource.
According to the terminal equipment provided by the embodiment of the invention, the resources occupied by SRS transmission are configured by DCI instead of RRC signaling, the DCI configuration is convenient and flexible, and the problems of poor flexibility and larger time delay of SRS resource configuration caused by RRC signaling configuration are solved. Meanwhile, the terminal equipment can realize flexible SRS transmission in a dynamic SRS resource indication mode, and the coverage performance and the capacity of the SRS are improved conveniently.
Optionally, as an embodiment, the resource indication field includes a frequency domain resource indication field, and the determining, based on the resource indication field, the resource occupied by the SRS transmission includes:
and determining at least one of the number of physical resource blocks occupied by the SRS transmission and a starting physical resource block based on the frequency domain resource indication domain. That is, the frequency domain resource indication field may be used to indicate the number of physical resource blocks occupied by SRS transmission (the starting physical resource block may be configured by a higher layer signaling); it can also be used to indicate the starting physical resource block occupied by SRS transmission (the number of physical resource blocks can be configured by higher layer signaling); and the number of the initial physical resource blocks and the number of the physical resource blocks occupied by the SRS transmission can be indicated at the same time.
Optionally, as an embodiment, the resource indication field includes a frequency domain resource indication field, and the determining, based on the resource indication field, the resource occupied by the SRS transmission includes:
determining a frequency hopping bandwidth B occupied by the SRS transmission based on the frequency domain resource indication domainSRSAnd CSRS；
Based on the frequency hopping bandwidth BSRSAnd CSRSAnd determining the frequency domain resources occupied by the SRS transmission.
Optionally, as an embodiment, the resource indication field includes a time domain resource indication field, and the determining, based on the resource indication field, the resource occupied by the SRS transmission includes:
and determining at least one of the number of symbols occupied by the SRS transmission and a starting symbol identifier based on the time domain resource indication domain. That is, the time domain resource indication field may be used to indicate the number of symbols occupied by SRS transmission (the start symbol may be configured by higher layer signaling); a starting symbol identifier (the number of symbols can be configured by higher layer signaling) occupied by SRS transmission can be indicated; and the method can also be used for indicating the initial symbol identifier and the number of symbols occupied by SRS transmission at the same time. For a detailed description, reference is made to the embodiment shown in fig. 3.
Optionally, as an embodiment, the number of physical resource blocks occupied by SRS transmission is a positive integer multiple of n, where n is a positive integer greater than 1, and in a specific embodiment, n is equal to 4. Through the setting, the DCI can simultaneously indicate a plurality of physical resource blocks at one time, so that the signaling overhead is saved.
Optionally, in this embodiment of the present invention, the DCI may indicate a resource occupied by SRS transmission in at least one carrier. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one carrier, so that the signaling overhead can be saved, meanwhile, the DCI can indicate the resources occupied by the SRS transmission in a cross-carrier manner, and flexible indication is realized.
Optionally, in this embodiment of the present invention, the DCI may indicate resources occupied by SRS transmission in at least one slot or at least one subframe. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one time slot or at least one subframe, and the signaling overhead can be saved.
Optionally, as an embodiment, the format of the DCI is the same as a DCI format indicating transmission of a physical uplink shared channel PUSCH or a physical downlink shared channel PDSCH.
Optionally, as an embodiment, the format of the DCI is a predefined format, where the predefined format is different from a DCI format indicating a PUSCH or PDSCH transmission.
Optionally, as an embodiment, the cyclic redundancy check CRC of the DCI is scrambled by a first radio network temporary identifier RNTI, where the first RNTI includes: SRS-RNTI, AP-SRS-RNTI or SP-SRS-RNTI.
Optionally, as an embodiment, the SRS and the preset SRS are time division multiplexed for transmission, wherein,
the resources occupied by the preset SRS transmission are indicated by preset DCI, the CRC of the preset DCI is scrambled through a second RNTI, and the first RNTI is different from the second RNTI.
Optionally, as an embodiment, if the SRS collides with time domain resource transmission occupied by the preset SRS
Preferentially transmitting the SRS, and not transmitting the preset SRS or discarding the preset SRS; or not transmitting a partial signal in the preset SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol occupied by the SRS.
Optionally, as an embodiment, if the SRS collides with time domain resource transmission occupied by the preset SRS
Preferentially transmitting the preset SRS, and not transmitting the SRS or discarding the SRS; or not transmitting a partial signal in the SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol for the preset SRS.
Optionally, as an embodiment, the time domain position counter of the SRS transmission at least includes a symbol identifier occupied by the SRS transmission.
Optionally, as an embodiment, the SRS does not occupy symbols used for DMRS transmission.
The terminal device 700 according to the embodiment of the present invention may refer to the flow corresponding to the method 100 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the terminal device 700 are respectively for implementing the corresponding flow in the method 100, and are not described herein again for brevity.
Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 8, the network device 800 includes:
a transmitting module 802, configured to transmit DCI, where the DCI includes a resource indication field, where the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, the frequency domain resource indication field is used to indicate frequency domain resources occupied by SRS transmission, and the time domain resource indication field is used to indicate time domain resources occupied by the SRS transmission;
a receiving module 804, configured to receive the SRS on the resource indicated by the resource indication field.
According to the network equipment provided by the embodiment of the invention, the resources occupied by SRS transmission are configured by DCI instead of RRC signaling, the DCI configuration is convenient and flexible, and the problems of poor flexibility and larger time delay of SRS resource configuration caused by RRC signaling configuration are solved. Meanwhile, the terminal equipment can realize the flexible transmission of the SRS by a dynamic SRS resource indication mode, and the coverage performance and the capacity of the SRS are conveniently improved.
Optionally, as an embodiment, the resource indication field includes a frequency domain resource indication field, and the frequency domain resource indication field indicates at least one of a starting physical resource block and a number of physical resource blocks occupied by the SRS transmission.
Optionally, as an embodiment, the resource indication field includes a frequency domain resource indication field, where the frequency domain resource indication field indicates a frequency hopping bandwidth B occupied by the SRS transmissionSRSAnd CSRSSo that the terminal device can base on the frequency hopping bandwidth BSRSAnd CSRSAnd determining the frequency domain resources occupied by the SRS transmission.
Optionally, as an embodiment, the resource indication field includes a time domain resource indication field, and the time domain resource indication field indicates at least one of a number of symbols occupied by the SRS transmission and a starting symbol identifier.
Optionally, as an embodiment, the number of physical resource blocks occupied by SRS transmission is a positive integer multiple of n, where n is a positive integer greater than 1.
Optionally, in this embodiment of the present invention, the DCI may indicate a resource occupied by SRS transmission in at least one carrier. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one carrier, so that the signaling overhead can be saved, meanwhile, the DCI can indicate the resources occupied by the SRS transmission in a cross-carrier manner, and flexible indication is realized.
Optionally, in this embodiment of the present invention, the DCI may indicate resources occupied by SRS transmission in at least one slot or at least one subframe. Through the embodiment, the DCI indicates the resources occupied by the SRS transmission of at least one time slot or at least one subframe, and the signaling overhead can be saved.
Optionally, as an embodiment, a format of the DCI is the same as a DCI format indicating transmission of a physical uplink shared channel PUSCH or PDSCH.
Optionally, as an embodiment, the DCI format is a predefined format, where the predefined format is different from a DCI format indicating PUSCH or PDSCH transmission.
Optionally, as an embodiment, the cyclic redundancy check CRC of the DCI is scrambled by a first radio network temporary identifier RNTI, where the first RNTI includes:
the method comprises the following steps of detecting a reference signal radio network temporary identifier SRS-RNTI, a non-periodically triggered detection reference signal radio network temporary identifier AP-SRS-RNTI or a semi-continuous detection reference signal radio network temporary identifier SP-SRS-RNTI.
Optionally, as an embodiment, the SRS and the preset SRS are time division multiplexed for transmission, wherein,
the resources occupied by the preset SRS transmission are indicated by preset DCI, the CRC of the preset DCI is scrambled through a second RNTI, and the first RNTI is different from the second RNTI.
Optionally, as an embodiment, the time domain position counter of the SRS transmission at least includes a symbol identifier occupied by the SRS transmission.
Optionally, as an embodiment, the SRS does not occupy symbols used for DMRS transmission.
The network device 800 according to the embodiment of the present invention may refer to the flow corresponding to the method 600 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the network device 800 are respectively for implementing the corresponding flow in the method 600, and are not described herein again for brevity.
Fig. 9 is a block diagram of a terminal device of another embodiment of the present invention. The terminal apparatus 900 shown in fig. 9 includes: at least one processor 901, memory 902, at least one network interface 904, and a user interface 903. The various components in the terminal device 900 are coupled together by a bus system 905. It is understood that the bus system 905 is used to enable communications among the components. The bus system 905 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 9 as bus system 905.
The user interface 903 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 902 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 902 of the systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 902 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 9021 and application programs 9022.
The operating system 9021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks. The application 9022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.
In this embodiment of the present invention, the terminal device 900 further includes: a computer program stored on the memory 902 and executable on the processor 901, the computer program, when executed by the processor 901, implementing the steps of the method 100 as follows.
The method disclosed in the above embodiments of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The Processor 901 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902, and combines the hardware to complete the steps of the above method. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 901, implements the steps of the embodiments of the method 100 as described above.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The terminal device 900 can implement the processes implemented by the terminal device in the foregoing embodiments, and in order to avoid repetition, the descriptions are omitted here.
Referring to fig. 10, fig. 10 is a block diagram of a network device according to an embodiment of the present invention, which is capable of implementing details of method embodiment 600 and achieving the same effects. As shown in fig. 10, the network-side device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein:
in this embodiment of the present invention, the network side device 1000 further includes: a computer program stored on the memory 1003 and executable on the processor 1001, the computer program, when executed by the processor 1001, implementing the steps of the method 600.
In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 1001 is responsible for managing a bus architecture and general processes, and the memory 1003 may store data used by the processor 1001 in performing operations.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes in the method embodiment 100 and the method embodiment 600, and can achieve the same technical effects, and in order to avoid repetition, the computer program is not described herein again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (30)

1. A Sounding Reference Signal (SRS) transmission method is applied to terminal equipment, and is characterized by comprising the following steps:
receiving Downlink Control Information (DCI), wherein the DCI comprises a resource indication domain, the resource indication domain comprises at least one of a frequency domain resource indication domain and a time domain resource indication domain, the frequency domain resource indication domain is used for indicating frequency domain resources occupied by SRS transmission, and the time domain resource indication domain is used for indicating time domain resources occupied by the SRS transmission;
determining resources occupied by the SRS transmission based on the resource indication field;
transmitting the SRS over the resources; wherein the content of the first and second substances,
if the SRS conflicts with a time domain resource occupied by a preset SRS, the SRS is preferentially transmitted, and the preset SRS is not transmitted or discarded; or not transmitting a partial signal in the preset SRS or discarding the partial signal, wherein a symbol occupied by the partial signal is overlapped with a symbol occupied by the SRS;
alternatively, the first and second electrodes may be,
if the SRS conflicts with the time domain resource occupied by the preset SRS, the preset SRS is preferentially transmitted, and the SRS is not sent or discarded; or not transmitting a partial signal in the SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol for the preset SRS;
the SRS is an evolved SRS, and the preset SRS is a Legacy SRS.
2. The method of claim 1, wherein the resource indication field comprises a frequency domain resource indication field, and wherein the determining the resources occupied by the SRS transmission based on the resource indication field comprises:
and determining at least one of the number of physical resource blocks occupied by the SRS transmission and a starting physical resource block based on the frequency domain resource indication domain.
3. The method of claim 1, wherein the resource indication field comprises a frequency domain resource indication field, and wherein the determining the resources occupied by the SRS transmission based on the resource indication field comprises:
determining a frequency hopping bandwidth B occupied by the SRS transmission based on the frequency domain resource indication domainSRSAnd CSRS；
Based on the frequency hopping bandwidth BSRSAnd CSRSAnd determining the frequency domain resources occupied by the SRS transmission.
4. The method of any of claims 1-3, wherein the resource indication field comprises a time domain resource indication field, and wherein determining the resources occupied by the SRS transmission based on the resource indication field comprises:
and determining at least one of the number of symbols occupied by the SRS transmission and a starting symbol identifier based on the time domain resource indication domain.
5. The method of claim 4, wherein the number of physical resource blocks occupied by the SRS transmission is a positive integer multiple of n, wherein n is a positive integer greater than 1.
6. The method of claim 1,
the DCI indicates resources occupied by SRS transmission of at least one carrier.
7. The method of claim 1,
the DCI indicates resources occupied by SRS transmission of at least one slot or subframe.
8. The method of claim 1,
the format of the DCI is the same as the DCI format for indicating the transmission of a Physical Uplink Shared Channel (PUSCH) or a Physical Downlink Shared Channel (PDSCH).
9. The method of claim 1,
the format of the DCI is a predefined format, wherein the predefined format is different from a DCI format indicating PUSCH or PDSCH transmission.
10. The method of claim 8 or 9, wherein the cyclic redundancy check, CRC, of the DCI is scrambled by a first radio network temporary identity, RNTI, comprising a sounding reference signal radio network temporary identity, SRS-RNTI, a non-periodically triggered sounding reference signal radio network temporary identity, AP-SRS-RNTI, or a semi-persistent sounding reference signal radio network temporary identity, SP-SRS-RNTI.
11. The method of claim 10, wherein the SRS and the pre-set SRS are time division multiplexed for transmission, wherein,
the resources occupied by the sending of the preset SRS are indicated by preset DCI, the CRC of the preset DCI is scrambled by second RNTI, and the first RNTI is different from the second RNTI.
12. The method of claim 1,
the time domain position counter of the SRS transmission at least comprises a symbol mark occupied by the SRS transmission.
13. The method of claim 1,
the SRS does not occupy symbols used by demodulation reference signal (DMRS) transmission.
14. An SRS transmission method applied to a network device, the method comprising:
sending DCI, wherein the DCI comprises a resource indication domain, the resource indication domain comprises at least one of a frequency domain resource indication domain and a time domain resource indication domain, the frequency domain resource indication domain is used for indicating frequency domain resources occupied by SRS sending, and the time domain resource indication domain is used for indicating time domain resources occupied by the SRS sending;
receiving the SRS on the resource indicated by the resource indication field; wherein the content of the first and second substances,
if the SRS conflicts with a time domain resource occupied by a preset SRS, the SRS is preferentially transmitted, and the preset SRS is not transmitted or discarded; or not transmitting a partial signal in the preset SRS or discarding the partial signal, wherein a symbol occupied by the partial signal is overlapped with a symbol occupied by the SRS;
alternatively, the first and second electrodes may be,
if the SRS conflicts with the time domain resource occupied by the preset SRS, the preset SRS is preferentially transmitted, and the SRS is not sent or discarded; or not transmitting a partial signal in the SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol for the preset SRS;
the SRS is an evolved SRS, and the preset SRS is a Legacy SRS.
15. The method of claim 14, wherein the resource indication field comprises a frequency domain resource indication field indicating at least one of a starting physical resource block and a number of physical resource blocks occupied by the SRS transmission.
16. The method of claim 14, wherein the resource indication field comprises a frequency domain resource indication field indicating a frequency hopping bandwidth B occupied by the SRS transmissionSRSAnd CSRSTo make the terminal device based on the frequency hopping bandwidth BSRSAnd CSRSAnd determining the frequency domain resources occupied by the SRS transmission.
17. The method of any of claims 14 to 16, wherein the resource indication field comprises a time domain resource indication field indicating at least one of a number of symbols occupied by the SRS transmission and a starting symbol identity.
18. The method of claim 17, wherein the number of physical resource blocks occupied by the SRS transmission is a positive integer multiple of n, wherein n is a positive integer greater than 1.
19. The method of claim 14,
the DCI indicates resources occupied by SRS transmission of at least one carrier.
20. The method of claim 14,
the DCI indicates resources occupied by SRS transmission of at least one slot or subframe.
21. The method of claim 14,
the format of the DCI is the same as the DCI format indicating PUSCH or PDSCH transmission.
22. The method of claim 14,
the format of the DCI is a predefined format, wherein the predefined format is different from a DCI format indicating PUSCH or PDSCH transmission.
23. The method of claim 21 or 22, wherein the CRC of the DCI is scrambled by a first RNTI, which comprises a SRS-RNTI, an AP-SRS-RNTI, or an SP-SRS-RNTI.
24. The method of claim 23, wherein the SRS and the pre-set SRS are time division multiplexed for transmission, wherein,
the resources occupied by the preset SRS transmission are indicated by preset DCI, the CRC of the preset DCI is scrambled through a second RNTI, and the first RNTI is different from the second RNTI.
25. The method of claim 14,
the time domain position counter of the SRS transmission at least comprises a symbol mark occupied by the SRS transmission.
26. A terminal device, comprising:
a receiving module, configured to receive DCI, where the DCI includes a resource indication field, where the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, the frequency domain resource indication field is used to indicate frequency domain resources occupied by SRS transmission, and the time domain resource indication field is used to indicate time domain resources occupied by the SRS transmission;
a resource determining module, configured to determine, based on the resource indication field, a resource occupied by the SRS transmission;
a transmitting module, configured to transmit the SRS on the resource; wherein the content of the first and second substances,
if the SRS conflicts with a time domain resource occupied by a preset SRS, the SRS is preferentially transmitted, and the preset SRS is not transmitted or discarded; or not transmitting a partial signal in the preset SRS or discarding the partial signal, wherein a symbol occupied by the partial signal is overlapped with a symbol occupied by the SRS;
alternatively, the first and second electrodes may be,
if the SRS conflicts with the time domain resource occupied by the preset SRS, the preset SRS is preferentially transmitted, and the SRS is not sent or discarded; or not transmitting a partial signal in the SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol for the preset SRS;
the SRS is an evolved SRS, and the preset SRS is a Legacy SRS.
27. A network device, comprising:
a sending module, configured to send DCI, where the DCI includes a resource indication field, where the resource indication field includes at least one of a frequency domain resource indication field and a time domain resource indication field, the frequency domain resource indication field is used to indicate frequency domain resources occupied by SRS transmission, and the time domain resource indication field is used to indicate time domain resources occupied by the SRS transmission;
a receiving module, configured to receive the SRS on a resource indicated by the resource indication field; wherein the content of the first and second substances,
if the SRS conflicts with a time domain resource occupied by a preset SRS, the SRS is preferentially transmitted, and the preset SRS is not transmitted or discarded; or not transmitting a partial signal in the preset SRS or discarding the partial signal, wherein a symbol occupied by the partial signal is overlapped with a symbol occupied by the SRS;
alternatively, the first and second liquid crystal display panels may be,
if the SRS conflicts with the time domain resource occupied by the preset SRS, the preset SRS is preferentially transmitted, and the SRS is not sent or discarded; or not transmitting a partial signal in the SRS or discarding the partial signal, wherein a symbol occupied by the partial signal overlaps with a symbol for the preset SRS;
the SRS is an evolved SRS, and the preset SRS is a Legacy SRS.
28. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the SRS transmission method according to any one of claims 1 to 13.
29. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the SRS transmission method according to any one of claims 14 to 25.
30. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the SRS transmission method according to any one of claims 1 to 25.
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