WO2020029963A1

WO2020029963A1 - Reference signal transmission method and device

Info

Publication number: WO2020029963A1
Application number: PCT/CN2019/099465
Authority: WO
Inventors: 费永强; 郭志恒; 谢信乾; 毕文平
Original assignee: 华为技术有限公司
Priority date: 2018-08-07
Filing date: 2019-08-06
Publication date: 2020-02-13
Also published as: CN110831162B; CN110831162A

Abstract

Provided in the embodiments of the present application are a reference signal transmission method and device. The method comprises: a terminal device determining, according to first indication information, second indication information and a mapping rule, a first frequency domain resource and a first sounding reference signal (SRS) sent on the first frequency domain resource, wherein the first indication information is used for determining the first frequency domain resource, the second indication information is used for determining a second frequency domain resource and a second SRS corresponding to the second frequency domain resource, and the mapping rule is used for determining a correlation between the first frequency domain resource and the second frequency domain resource; and the terminal device sending, on the first frequency domain resource, the first SRS to a network device, such that the network device can accurately acquire the uplink channel quality of the terminal device.

Description

Reference signal transmission method and equipment

This application claims priority from a Chinese patent application filed on August 7, 2018 with the Chinese Patent Office, application number 201810893426.2, and application name "Reference Signal Transmission Method and Equipment", the entire contents of which are incorporated herein by reference.

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method and a device for transmitting a reference signal.

Background technique

Sounding reference signal (SRS) is a reference signal used to measure the uplink channel. The uplink SRS is sent by the terminal device, and the network device can perform uplink channel measurement based on the SRS sent by the terminal device, and estimate the uplink channel quality of each terminal device on different frequencies, so as to facilitate the allocation of uplink resources, modulation and coding, The antenna transmission parameter settings provide a reference basis.

At present, in a new radio access technology (New Radio, NR) system, frequency domain resources used by a terminal device to send SRS are predefined. Specifically, in the frequency domain, whether frequency-hopping SRS or non-frequency-hopping SRS is used, the frequency domain resources used by the terminal device to send SRS are continuous RBs on a predefined resource block (RB) grid. Resources. The continuous RB resources are considered from the RB granularity, and the start and end positions of the continuous RB resources are also predefined.

However, in the future evolution of NR, the bandwidth resources configured for terminal equipment may include several discrete frequency bands, or include irregular available frequency bands. These discrete frequency bands or irregular available frequency bands cannot be predefined and continuous. The RB resources are covered, causing the terminal device to fail to send SRS to the network device, or the SRS sent by the terminal device not to cover all discrete frequency bands or irregular available frequency bands that can be used for data transmission, and the network device cannot accurately know the terminal device Uplink channel quality.

Summary of the invention

The embodiments of the present application provide a reference signal transmission method and device, and a network device can accurately know an uplink channel quality of a terminal device.

In a first aspect, an embodiment of the present application provides a reference signal transmission method, including:

The terminal device receives the first instruction information, the second instruction information, and the mapping rule from the network device. Optionally, the mapping rule may also be predetermined by the terminal device and the network device, that is, the network device does not send the mapping rule to the terminal device;

The terminal device determines a first frequency domain resource and a first sounding reference signal SRS sent on the first frequency domain resource according to the first indication information, the second indication information, and a mapping rule, where the first indication information is used for Determining a first frequency domain resource, which may be a discrete frequency domain resource or a continuous frequency domain resource; the second indication information is used to determine a second frequency domain resource and the second frequency domain resource A second SRS corresponding to a domain resource, the second frequency domain resource is a continuous frequency domain resource, that is, a resource that can be used to transmit an SRS specified in the protocol, and the second SRS is an SRS carried on the continuous frequency domain resource; The mapping rule is used to determine a corresponding relationship between the first frequency domain resource and the second frequency domain resource; the first SRS carried on the first frequency domain resource is the one having a corresponding relationship with the first frequency domain resource. The SRS corresponding to the second frequency domain resource;

The terminal device sends the first SRS to a network device on the first frequency domain resource, and the network device can estimate a channel carrying the first SRS, thereby accurately knowing an uplink channel quality of the terminal device.

In a possible design, the first indication information is used to indicate a third frequency domain resource, and the first frequency domain resource is a resource in the third frequency domain resource, that is, the first frequency domain resource. Is a subset of the third frequency domain resource, the second indication information is used to determine a second frequency domain resource in the fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource; The domain resource is a subset of the fourth frequency domain resource; the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used to indicate the third frequency domain resource and the fourth frequency domain Correspondence between resources.

In a possible design, the mapping rule is a rule in which a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource correspond in order, wherein the first The frequency domain resource is a frequency domain resource that has a corresponding relationship with the second frequency domain resource in the third frequency domain resource, and the first SRS is corresponding to a second frequency domain resource corresponding to the first frequency domain resource. SRS. The order may be the natural order of the resource unit number or index, or the order may be the order from low to high of the frequency domain resource.

In a possible design, the mapping rule is that a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource have the same frequency domain as the third frequency domain resource A rule corresponding to a location resource unit, wherein the first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS is the first The SRS corresponding to the second frequency domain resource corresponding to the frequency domain resource.

In a possible design, the first indication information is a bitmap corresponding to a fifth frequency domain resource, and the bits in the bitmap are used to indicate a third bit in the fifth frequency domain resource. Frequency domain resources.

In a possible design, the first indication information includes at least one resource indication information, and each of the resource indication information is used to indicate one resource unit or multiple consecutive resource units, and the third frequency domain resource includes Each resource unit indicated by the resource indication information. The resource indication information is used to indicate {start position, end position}, {start position, length}, {length, end position}, and the like. Optionally, the resource indication information may be a Resource Indication Value (RIV). The RIV value corresponds one-to-one with a continuous resource unit.

In a possible design, the first indication information includes at least one list information, where the list information is used to indicate available frequency domain resources, and the third frequency domain resource includes resources indicated in the list information. Specifically, the first indication information includes a first list and a second list, the first list includes N elements, each element indicates a starting position, the second list includes N elements, each element indicates an ending position, the first The i-th element of a list and the i-th element of the second list can determine a continuous resource unit. When there are multiple elements in the first list and elements in the second list, there are multiple consecutive resource units. Therefore, the third frequency domain resource is composed of a union of at least one consecutive resource unit. The first list and the second list may also be a list indicating a start position and a length, or a list indicating an end position and a length, respectively. The terminal device may determine the third frequency domain resource according to the list information in the first instruction information.

In a possible design, the second indication information includes first SRS bandwidth indication information and second SRS bandwidth indication information, the first SRS bandwidth indication information is used to indicate multiple SRS bandwidths, and the second SRS The bandwidth indication information is used to indicate one of the multiple SRS bandwidths.

In a possible design, the resource unit is a resource block RB, a resource block group RBG, a resource particle RE, or a resource particle group REG; the terminal device receives cell common indication information from the network device, and the cell common The instruction information carries first instruction information, second instruction information, and mapping rules.

In a possible design, the resource unit is a resource unit corresponding to the minimum RB number of the SRS sent by the terminal device or a resource unit corresponding to the RE number corresponding to the comb tooth level, and the terminal device receives the user-specific information from the network device. Instruction information, the user-specific instruction information carries first instruction information, second instruction information, and mapping rules.

In a possible design, the determining, by the terminal device, the first sounding reference signal SRS sent on the first frequency domain resource according to the first indication information, the second indication information, and the mapping rule includes:

Determining, by the terminal device, a first SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, the mapping rule, and a frequency hopping rule; wherein the frequency hopping The rule is used to indicate a second frequency domain resource corresponding to each hop.

In a second aspect, an embodiment of the present application provides a reference signal transmission method, including:

The network device sends first instruction information, second instruction information, and mapping rules to the terminal device, where the first instruction information is used to determine a first frequency domain resource, and the second instruction information is used to determine a second frequency domain resource A second SRS corresponding to the second frequency domain resource, and the mapping rule is used to determine a correspondence between the first frequency domain resource and the second frequency domain resource;

Receiving, by the network device, the first SRS from the terminal device on the first frequency domain resource.

In a possible design, the first indication information is used to indicate a third frequency domain resource, the first frequency domain resource is a resource in the third frequency domain resource, and the second indication information is used to Determining a second frequency domain resource in a fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource, where the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used for Indicating a correspondence between the third frequency domain resource and the fourth frequency domain resource.

In a possible design, the mapping rule is a rule in which a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource correspond in order, wherein the first The frequency domain resource is a frequency domain resource that has a corresponding relationship with the second frequency domain resource in the third frequency domain resource, and the first SRS is corresponding to a second frequency domain resource corresponding to the first frequency domain resource. SRS.

In a possible design, the first indication information includes at least one resource indication information, and each of the resource indication information is used to indicate one resource unit or multiple consecutive resource units, and the third frequency domain resource includes Each resource unit indicated by the resource indication information.

In a possible design, the sending, by the network device, the first indication information, the second indication information, and the mapping rule to the terminal device includes:

Sending, by the network device, the first indication information, the second indication information, the mapping rule, and the frequency hopping rule to a terminal device; wherein the frequency hopping rule is used to indicate a second frequency domain corresponding to each hop Resources.

In a third aspect, an embodiment of the present application provides a terminal device, including:

A processing module, configured to determine a first frequency domain resource and a first sounding reference signal SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and a mapping rule, wherein the first instruction Information is used to determine a first frequency domain resource, the second indication information is used to determine a second frequency domain resource and a second SRS corresponding to the second frequency domain resource, and the mapping rule is used to determine the first frequency domain resource A correspondence between a domain resource and the second frequency domain resource;

A sending module, configured to send the first SRS to a network device on the first frequency domain resource.

In a possible design, the processing module is specifically configured to determine to send on the first frequency domain resource according to the first instruction information, the second instruction information, the mapping rule, and the frequency hopping rule. The first SRS; wherein the frequency hopping rule is used to indicate a second frequency domain resource corresponding to each hop.

In a fourth aspect, an embodiment of the present application provides a network device, including:

A sending module, configured to send first indication information, second indication information, and mapping rules to a terminal device, where the first indication information is used to determine a first frequency domain resource, and the second indication information is used to determine a second frequency domain resource; A second SRS corresponding to the frequency domain resource and the second frequency domain resource, and the mapping rule is used to determine a correspondence between the first frequency domain resource and the second frequency domain resource;

A receiving module, configured to receive the first SRS from the terminal device on the first frequency domain resource.

In a possible design, the sending module is specifically configured to send the first indication information, the second indication information, the mapping rule, and the frequency hopping rule to a terminal device; wherein the frequency hopping rule is used To indicate a second frequency domain resource corresponding to each hop.

In a fifth aspect, an embodiment of the present application provides a terminal device, including: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes computer-executable instructions stored in the memory, so that the at least one processor executes the method according to the first aspect or various possible designs of the first aspect.

According to a sixth aspect, an embodiment of the present application provides a network device, including: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes computer-executable instructions stored in the memory, so that the at least one processor executes the method according to the second aspect above or various possible designs of the second aspect.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed, the first aspect or the first aspect is implemented as above The methods described in various possible designs.

According to an eighth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are executed, the second aspect or the second aspect is implemented as above. The methods described in various possible designs.

The reference signal transmission method provided in the embodiment of the present application sends first instruction information, second instruction information, and mapping rules to a terminal device through a network device; the terminal device receives the first instruction information, second instruction information, and mapping rules from the network device, The first indication information is used to determine the first frequency domain resource, the second indication information is used to determine the second SRS corresponding to the second frequency domain resource and the second frequency domain resource, and the mapping rule is used to determine the first frequency domain resource and Correspondence between second frequency domain resources. The mapping rule may also be predetermined by the terminal device and the network device, that is, the network device does not send the mapping rule to the terminal device, and the network device may send the first instruction information and the second instruction information to the terminal device. The terminal device determines the first frequency domain resource and the first SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and the mapping rule. The terminal device sends the first frequency domain resource to the network device on the first frequency domain resource. SRS. The network device receives the first SRS from the terminal device on the first frequency domain resource, and enables the terminal device to send SRS on the discontinuous or irregular first frequency domain resource without damaging the SRS transmission mechanism. The network device can receive the SRS sent by the terminal device to estimate the channel quality, so that the terminal device and the network device can transmit data on the first frequency domain resource, which improves the system transmission performance.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a network architecture that may be applicable to embodiments of the present application;

FIG. 2 is a schematic diagram of a frequency domain resource for sending SRS according to an embodiment of the present application; FIG.

3 is a schematic diagram of frequency hopping provided by an embodiment of the present application;

4 is a signaling flowchart of a reference signal transmission method provided by an embodiment of the application;

5 is a schematic diagram of a bitmap provided by an embodiment of the present application;

6 to 18 are schematic diagrams of resource mapping provided by an embodiment of the present application;

19 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

20 is a schematic structural diagram of a network device according to an embodiment of the present application;

21 is a schematic diagram of hardware of a terminal device according to an embodiment of the present application;

FIG. 22 is a hardware schematic diagram of a network device according to an embodiment of the present application.

detailed description

The network architecture and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those of ordinary skill in the art may know that with the network The evolution of the architecture and the emergence of new business scenarios. The technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The embodiments of the present application can be applied to wireless communication systems. It should be noted that the wireless communication systems mentioned in the embodiments of the present application include, but are not limited to: Narrowband Internet of Things (NB-IoT), Global Mobile Communication system (Global System for Mobile, Communications, GSM), Enhanced Data Rate GSM Evolution System (Enhanced Data Rate for GSM Evolution, EDGE), Wideband Code Division Multiple Access System (Wideband Code Division Multiple Access, WCDMA), Code Division Multiple Access 2000 System (Code Division Multiple Access) (CDMA2000), Time Division-Synchronization Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE) and next-generation 5G mobile communication systems NR.

The following describes a possible network architecture of the embodiment of the present application with reference to FIG. 1. FIG. 1 illustrates a network architecture to which embodiments of the present application may be applicable. As shown in FIG. 1, the network architecture provided by this embodiment includes a network device 101 and a terminal device 102.

Among them, the network device 101 is a device for accessing a terminal to a wireless network, and may be a base station in Global System of Mobile (GSM) or Code Division Multiple Access (CDMA) (Base Transceiver Station, BTS for short), or a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), or long term evolution (LTE) Evolved NodeB (referred to as eNB or eNodeB), or relay station or access point, or network-side equipment (such as base stations) in the future 5G network or public land mobile network (Public Land Mobile Network) PLMN) is not limited here. FIG. 1 schematically illustrates a possible schematic, and the network device 101 is used as a base station as an example for illustration.

The terminal device 102 may be a wireless terminal or a wired terminal. The wireless terminal may be a device that provides voice and / or other business data connectivity to the user, a handheld device with a wireless connection function, or other processing connected to a wireless modem. device. A wireless terminal can communicate with one or more core networks via a radio access network (Radio Access Network, RAN for short). The wireless terminal can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a mobile terminal with a mobile terminal. Computers, for example, may be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices that exchange languages and / or data with a wireless access network. For example, Personal Communication Service (PCS) phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (Personal) Digital Assistant (abbreviated as PDA) and other devices. A wireless terminal can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile station, a remote station, a remote terminal, The access terminal (Access terminal), user terminal (User terminal), and user agent (User agent) are not limited here.

FIG. 1 schematically illustrates a possible schematic. Among them, the network device 101 and the terminal devices 102A-102F constitute a communication system. In this communication system, terminal devices 102A-102F can send uplink data or signals to network device 101, and network device 101 needs to receive uplink data or signals sent by terminal devices 102A-102F; network device 101 can send downlink data or signals to The terminal devices 102A-102F and the terminal devices 102A-102F need to receive downlink data or signals sent by the network device 101. In addition, the terminal devices 102D-102F can also constitute a communication system. In this communication system, the network device 101 can send downlink data to the terminal device 102A, terminal device 102B, terminal device 102E, etc .; the terminal device 102E can also send downlink data or signals to the terminal device 102D and terminal device 102F.

In New Radio Access Technology (NR), network equipment needs to obtain information about the wireless communication channel of the terminal equipment, so as to provide a reference basis for resource allocation, modulation and coding methods, and multi-antenna transmission parameter settings. A method for obtaining uplink channel information of a terminal device is that the terminal device sends a sounding reference signal (SRS), and the network device detects the received SRS, thereby uplinking each terminal device on a different frequency. Channel quality is estimated.

In NR, the frequency domain resources occupied by the SRS in the frequency domain are pre-defined and divided, and the terminal device sends the SRS on a predefined resource block (RB) when sending the SRS. Optionally, the network device may configure the SRS frequency domain resources of the terminal device. Table 1 is used to indicate frequency domain resources for sending SRS.

Table 1

Among them, B _SRS and C _SRS are bandwidth indication information. For convenience of explanation, the C _{SRS is} referred to as first SRS bandwidth indication information, and the B _{SRS is} referred to as second SRS bandwidth indication information. Among them, C _{SRS is} used to indicate multiple SRS bandwidths, B _{SRS is} used to indicate one of the multiple SRS bandwidths indicated by C _SRS ; it can also be described as B _SRS used to indicate multiple SRS bandwidths, and C _SRS used to indicate B _SRS One of the indicated multiple SRS bandwidths. This embodiment does not specifically limit the specific description, as long as the C _SRS and the B _SRS can collectively indicate an SRS bandwidth. m _{SRS, i} represents the minimum SRS bandwidth configurable to the terminal device under a given C _SRS , and the unit is RB. When i = 1, 2 or 3, N _i represents the number of m _{SRS, i} included in m _{SRS, i} _-1 when B _SRS = i; when i = 0, the value of N _i is fixed as 1. For example, taking the behavior example of C _SRS = 13, N ₁ = 2, the bandwidth indicated by m _{SRS, 0} is 48 (the unit is the number of RBs), the bandwidth indicated by m _{SRS, 1} is 24, and 48 is exactly divided into 2 24; next column N ₂ = 2 because 24 breaks down into 2 12; next column N ₃ = 3 because 12 breaks down into 3 4s.

Taking C _SRS = 13 in Table 1 as an example, the frequency domain resources of the SRS will be described with reference to FIG. 2. FIG. 2 is a schematic diagram of a frequency domain resource for sending SRS according to an embodiment of the present application. Combined with Table 1 and Figure 2, if the configuration is B _SRS = 0, in this configuration, the terminal device sends SRS will occupy all 48 RBs, as shown in the first row in the figure; if the configuration is B _SRS = 1, then in this configuration, the SRS sent by the terminal device will account for 24 low-frequency RBs or 24 high-frequency RBs out of 48 RBs, as shown in the second line of the figure (specifically, the 24 low-frequency RBs or high-frequency Which of the 24 RBs is determined by other parameters); if configured with B _SRS = 2, then in this configuration, the terminal device sending SRS will account for one of the 4 resources with a length of 12 RB among the 48 RBs As shown in the third line in the figure (which one is determined by other parameters), B _SRS = 3 and B _SRS = 4 are similar, which will not be described again in this embodiment.

When B _{SRS is} not equal to 0, the network device can configure the terminal device to send SRS by frequency hopping. FIG. 3 is a schematic diagram of frequency hopping provided by an embodiment of the present application. As shown in FIG. 3, C _SRS = 13, B _SRS = 2, and n _SRS is a frequency hopping count. Through frequency hopping, a narrower-bandwidth SRS signal can traverse the frequency range of the configurable maximum bandwidth of the SRS, so that network devices can know the channel quality of each terminal device over the entire bandwidth. Compared with the transmission of SRS signals with larger bandwidths, assuming that the total power of the transmission is unchanged, the power of SRS signals with narrower bandwidths is greater in the unit frequency, and the measurement of network equipment is more accurate, but it needs to send more times to obtain the entire bandwidth. The channel quality takes longer.

It can be seen that in the NR, in the frequency domain, regardless of frequency hopping or non-frequency hopping, the resources occupied by the SRS sent by the terminal are resources of continuous RBs on a predefined RB grid. The continuity and discontinuity involved in this embodiment are considered from the RB granularity, not from the frequency domain granularity of the resource element (RE). Among them, one RB includes 12 subcarriers, and one RE corresponds to one subcarrier; SRS may be discontinuous in terms of subcarrier or RE granularity. For example, SRS can be transmitted with comb teeth, and the comb teeth are 2 Indicates that SRS occupies 1 subcarrier for every 2 subcarriers, and the comb tooth is 4, indicating that SRS occupies 1 subcarrier for every 4 subcarriers; but from the perspective of RB granularity, the RB occupied by SRS is continuous. In an SRS configuration, the SRS cannot occupy non-contiguous RB resources; the resources occupied by the SRS cannot be RB resources of any starting point and any length. For example, in the configuration of Figure 2, if 48 RBs are changed from low frequency to high frequency Marked as RB0 ~ RB47, B _SRS = 2, in one transmission, the SRS of the terminal device may occupy the resources of RB0 ~ RB11, but cannot occupy the resources of RB2 ~ RB13. The RB2 ~ RB13 are irregular frequency bands.

However, in some scenarios, due to technical (such as deep fading frequency bands) or commercial factors (such as belonging to different operators), the resources that can be allocated to terminal equipment are discrete frequency domain resources, or continuous spectrum resources and When the frequency domain resources for sending SRS are configured differently, the discrete frequency domain resources are considered from the RB granularity. For example, a bandwidth part (BWP) may include several discrete frequency bands, or a carrier may include several discrete frequency bands, or the resource is an irregular frequency band RB2 to RB5, which makes the existing SRS transmission impossible. Work, the network equipment cannot accurately know the uplink channel quality of the terminal equipment.

Based on this, an embodiment of the present invention provides a reference signal transmission method. The method uses mapping rules to indicate the correspondence between the available SRS frequency domain resources and the original SRS frequency domain resources, and determines the available SRS frequency domain resources based on the correspondence. SRS on the transmission. The detailed description is given below in conjunction with specific embodiments.

FIG. 4 is a signaling flowchart of a reference signal transmission method provided by an embodiment of the application. As shown in Figure 4, the method includes:

S401. The network device sends the first instruction information, the second instruction information, and the mapping rule to the terminal device.

S402. The terminal device receives first indication information, second indication information, and mapping rules from a network device, where the first indication information is used to determine a first frequency domain resource, and the second indication information is used to determine a second frequency domain resource and a first frequency information. For the second SRS corresponding to the two frequency domain resources, the mapping rule is used to determine the correspondence between the first frequency domain resource and the second frequency domain resource.

S403. The terminal device determines the first frequency domain resource and the first sounding reference signal SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and the mapping rule.

S404. The terminal device sends the first SRS to the network device on the first frequency domain resource.

S405. The network device receives the first SRS from the terminal device on the first frequency domain resource.

The network device configures the terminal device with a frequency domain resource for sending SRS, and the terminal device sends the SRS to the network device according to the configured frequency domain resource of the SRS. The network device sends the first instruction information, the second instruction information, and the mapping rule to the terminal device to implement resource configuration of the terminal device.

Exemplarily, the network device may send the first instruction information, the second instruction information, and the mapping rule to the terminal device, and the terminal device may receive the first instruction information, the second instruction information, and the mapping rule from the network device. Specifically, the network device may simultaneously send the first instruction information, the second instruction information, and the mapping rule at different times. Alternatively, the network device may also carry the first indication information, the second indication information, and the mapping rule in one or more configuration information and send them.

For example, the configuration information may be radio resource control (Radio Resource Control, RRC) signaling, or may also be downlink control information (Downlink Control Information, DCI). This embodiment does not specifically limit a specific implementation manner in which the network device sends the first instruction information, the second instruction information, and the mapping rule to the terminal device. Optionally, the mapping rule may be predetermined by the terminal device and the network device, that is, the network device does not send the mapping rule to the terminal device, and the network device may send the first instruction information and the second instruction information to the terminal device.

The first instruction information and the second instruction information are described in detail below.

The first indication information is used to determine a first frequency domain resource. The first frequency domain resource may be a resource currently available to the terminal device for sending SRS. The first frequency domain resource may be a discrete frequency domain resource or a continuous frequency domain resource. Optionally, the first indication information may directly indicate the first frequency domain resource. Optionally, the first indication information is used to indicate a third frequency domain resource, and the first frequency domain resource is a resource in the third frequency domain resource, that is, the first frequency domain resource is a subset of the third frequency domain resource. . Similarly, the third frequency domain resource is a resource currently available to the terminal device for sending SRS. This embodiment does not specifically limit the content indicated by the first instruction information, as long as the first instruction information is used to determine the first frequency domain resource, that is, the terminal device may determine the first frequency domain resource according to the first instruction information. .

The second indication information is used to determine a second frequency domain resource and a second SRS corresponding to the second frequency domain resource. Exemplarily, the second frequency domain resource and the second SRS corresponding to the second frequency domain resource may be determined according to a protocol. The second frequency domain resource is a continuous frequency domain resource, that is, a resource that can be used to transmit an SRS specified in the protocol, and the second SRS is an SRS carried on the continuous frequency domain resource. The second indication information may include information used to indicate a second frequency domain resource and a second SRS corresponding to the second frequency domain resource. Optionally, the second indication information may also be used to determine a second frequency domain resource and a second SRS corresponding to the second frequency domain resource in the fourth frequency domain resource, where the second frequency domain resource is the fourth frequency domain resource. For a subset, for example, the second indication information may include information used to indicate that the first N resource units in the fourth frequency domain resource are the second frequency domain resource and the second SRS corresponding to the second frequency domain resource. Optionally, the second indication information may further include other information, and the terminal device determines a second frequency domain resource and a second SRS corresponding to the second frequency domain resource according to the second indication information.

Exemplarily, in the embodiment shown in Table 1 above, the second indication information includes first SRS bandwidth indication information C _SRS and second SRS bandwidth indication information B _SRS . The first SRS bandwidth indication information is used to indicate multiple SRSs. Bandwidth, the second SRS bandwidth indication information is used to indicate one of a plurality of SRS bandwidths indicated by the first SRS bandwidth indication information. One of the multiple SRS bandwidths is a second frequency domain resource. The terminal device may determine a bandwidth m _{SRS, i} (i = 0,1,2,3) corresponding to the second frequency domain resource according to the second instruction information, and according to the bandwidth m _{SRS, i} and other information, such as comb information, etc., A second SRS can be determined.

In the above embodiments, the frequency domain resource is a frequency domain resource including at least one resource unit. The resource unit may be a resource block (RB), a resource block group (RBG), a resource element (RE), or a resource element group (REG).

Specifically, when the resource unit is an RBG, considering that the SRS bandwidth is always an integer multiple of 4RB, one RBG may include 4 RBs; or considering m _{SRS, i} means that it can be configured to the terminal under a given C _SRS the minimum SRS bandwidth device, i.e. a specific user m _{SRS, the i-th} RB, to the SRS bandwidth is always m _SRS, an integer multiple of _{the i-th} RB C after a given _SRS, may thus RBG m _{SRS, the i-th} RB. Compared with the RB level indication, the multi-RB (ie RBG) granularity indication can save the indication overhead on the premise of ensuring the indication accuracy.

The granularity can also be multiple RE / REG (RE group) (such as 2RE, considering that the SRS is transmitted in comb shape, the comb level can be 2 or 4), or user specific K _TC REs, where K _TC represents Comb grade. Compared with the RE level indication, multiple RE granularity indications save the indication overhead on the premise of ensuring the indication accuracy.

It should be noted that the granularity is user-specific m _{SRS, i} RBs or user-specific K _TC REs, and is applicable to a Bandwidth Part (BWP) -based indication method (each BWP of each terminal device is configured with instruction information and Mapping rules), because the minimum SRS bandwidth or comb teeth configured by different terminal devices can be different and cannot be indicated with public information.

In this embodiment, the resource unit is RB or RBG as an example for detailed description. First, RB is used as an example to describe the implementation manner of the foregoing first indication information.

In a possible example, the first indication information is a bitmap corresponding to the fifth frequency domain resource, and the bits in the bitmap are used to indicate a third frequency domain resource in the fifth frequency domain resource. FIG. 5 is a schematic diagram of a bitmap provided by an embodiment of the present application. As shown in FIG. 5, the bitmap may be a common bitmap of a cell, that is, used to indicate a third frequency domain resource in a cell bandwidth. The bitmap may also be a bitmap of a bandwidth portion allocated to the terminal device. For example, BWP1 and BWP2 shown in FIG. 5.

In FIG. 5, the shaded part is a resource that can be used as the third frequency domain resource, and bit 1 is used to indicate a resource unit in the third frequency domain resource. For example, if the terminal device is configured to transmit in BWP1, in order to indicate the RBs that can be used to send SRS in BWP1, the BWP1-based bitmap {1,1,0,0,1} can be used for indication. If the terminal equipment is configured to transmit in the cell bandwidth, the cell common bitmap {0,0,1,1,0,0,1,1,1,1,0,0,0,0,1,0,0 } For instructions.

Those skilled in the art can understand that according to the different resources in the third frequency domain, when the network device sends the first instruction information, the second instruction information, and the mapping rule to the terminal device, it will select the cell according to the resource unit of the third frequency domain resource. Public or user-specific instructions. For example, for a cell common bitmap, public indication information may be selected, and for BWP1 and BWP2, user-specific indication information may be selected. The implementation manners of the common instruction information and the user-specific instruction information are not described herein again in this embodiment.

In another possible example, the first indication information includes at least one resource indication information, each resource indication information is used to indicate one resource unit or a plurality of consecutive resource units, and the third frequency domain resource includes each resource indication information. The indicated resource unit.

The resource indication information may be used to indicate {start position, end position}, {start position, length}, {length, end position}, and the like. Among them, {start position, end position} corresponds to a continuous resource between the start position and the end position; {start position, length} corresponds to a specified length from the start position Consecutive lengths of resource units; {length, end position} corresponds to consecutive lengths of resource units of a specified length, with the end position as the end point. Optionally, the resource indication information may be a Resource Indication Value (RIV). The one RIV value corresponds to one consecutive resource unit. The terminal device can determine a start position and an end position according to the resource indication value.

When multiple consecutive segments of resources in the BWP or cell bandwidth can be used to send SRS, the first indication information may include multiple RIVs, or multiple {starting positions, end positions}, or multiple {starting positions, lengths }, The indicated resources that can send SRS are the union of the resources indicated by these multiple RIVs or multiple {start positions, end positions} or multiple {start positions, lengths}.

In yet another possible example, the first indication information includes at least one list information, the list information is used to indicate available frequency domain resources, and the third frequency domain resource includes resources indicated in the list information.

Specifically, the first indication information may include two lists, for example, a first list including N elements, each element indicating a starting position, and a second list including N elements, each element indicating an end Position, the third frequency domain resource is a union set of a continuous {start position, end position} resource determined by the i-th element of the first list and the i-th element of the second list, i = 1, 2, ..., N. The first list and the second list may also be a list indicating a start position and a length, or a list indicating an end position and a length, respectively. The terminal device may determine the third frequency domain resource according to the list information in the first instruction information.

The mapping rules are described in detail below.

The mapping rule is used to determine a correspondence between a first frequency domain resource and a second frequency domain resource.

In some scenarios, the mapping rule may directly indicate the correspondence between the first frequency domain resource and the second frequency domain resource. For example, when the number of resource units included in the frequency domain resource indicated by the first indication information is consistent with the number of resource units included in the frequency domain resource indicated by the second indication information, the mapping rule may directly indicate the first frequency domain resource Correspondence with the second frequency domain resource. For other scenarios, this embodiment will not repeat them here.

In other scenarios, the mapping rule is used to indicate the correspondence between the third frequency domain resource and the fourth frequency domain resource. The terminal device can determine the correspondence between the first frequency domain resource and the second frequency domain resource according to the mapping rule.

A possible mapping rule

In a possible implementation manner, the mapping rule is a rule in which a resource unit included in a third frequency domain resource and a resource unit included in a fourth frequency domain resource correspond in order, where the first frequency domain resource is a third frequency resource. Among the frequency domain resources, a frequency domain resource having a corresponding relationship with the second frequency domain resource, and the first SRS is an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

In this embodiment, if the first frequency domain resource is a complete set of third frequency domain resources and the second frequency domain resource is a complete set of fourth frequency domain resources, the mapping rule is specifically a resource included in the first frequency domain resource. A rule that a unit corresponds to a resource unit included in a second frequency domain resource sequentially, and the first SRS is an SRS corresponding to a second frequency domain resource corresponding to the first frequency domain resource.

In this embodiment, the order may be the natural order of the resource unit number or index, or the order may be the order from low to high of the frequency domain resource.

For example, taking the resource unit as an RB as an example, the N resource units included in the fourth frequency domain resource are identified as RB _i in the order from low frequency to high frequency, i = 0,1,2, ..., N-1, third The M resource units included in the frequency domain resource are identified as RB _j in the order from low frequency to high frequency, and j = 0,1,2, ... M-1, and the third frequency domain resource can be selected in the fifth frequency domain resource by The order from low frequency to high frequency is identified as RB _Aj , j = 0,1,2, ... M-1, where Aj represents the index of the jth resource unit of the third frequency domain resource in the fifth frequency domain resource; then corresponding mapping rule, a fourth frequency domain resource in the i-th resource unit corresponding to the RB _i i-th resource unit of a third frequency domain resource _i of the RB, and the index of the resource unit in a fifth frequency domain resource is Ai , I = 0,1,2, ... min {N, M} -1. At this time, if the K resource units included in the second frequency domain resource are identified as RB _Bk in the fourth frequency domain resource, k = 0, 1, 2, ..., K-1, K ≦ N, where Bk represents the second The resource unit index corresponding to the kth resource unit of the frequency domain resource in the fourth frequency domain resource, and the resource unit included in the first frequency domain resource corresponding to the second frequency domain resource is indexed in the third frequency domain resource Is a resource unit of Bk, and the resource unit corresponds to a resource unit whose index is A _Bk in the fifth frequency domain resource, k = 0,1,2, ... min {K, M} -1, and Bk ≦ M-1 . For example, in the embodiment of FIG. 9 described below, the fourth frequency domain resource includes RB ₀ , RB ₁ , RB _2, ..., RB ₅ , the second frequency domain resource includes RB ₀ , RB ₁ , RB ₂ , and the fourth frequency domain RB ₃ , RB ₄ , and RB _{5 of the} resource correspond to RB ₀ , RB ₁ , and RB _{2 of the} second frequency domain resource (B0 = 3, B1 = 4, and B2 = 5) respectively; the fifth frequency domain resource includes RB ₀ , RB ₁ , RB ₂ ... RB ₁₅ , the third frequency domain resource includes RB ₀ , RB ₁ , RB ₂ , RB ₃ , RB ₄ , and the fifth frequency domain resource includes RB ₂ , RB ₃ , RB ₆ , RB ₇ , RB ₈ corresponds to RB ₀ , RB ₁ , RB ₂ , RB ₃ , and RB _{4 of the} third frequency domain resource (A0 = 2, A1 = 3, A2 = 6, A3 = 7, A4 = 8); four RB ₀ in the frequency domain _{_{resource, RB 1, RB 2, RB}} 3, RB 4 and the third frequency domain resources _{_{_{RB 0, RB 1, RB 2}}} , RB 3, RB 4 -one correspondence. After the mapping is completed according to the mapping rules, the first frequency domain resource is RB ₇ and RB ₈ in the fifth frequency domain resource, corresponding to RB ₃ and RB _{4 of the} third frequency domain resource, and the RB corresponding to the second frequency domain resource, respectively. _0, SRS transmission on _a first frequency domain resource is a second frequency domain resource RB RB _0, corresponding to the ₁ RB SRS. For the following FIG. 6 to FIG. 8 and FIG. 9, the implementation manners are similar, which will not be repeated here in this embodiment. In this embodiment, each resource index uses 0 as a starting point. Alternatively, each resource index may also use 1 as a starting point. The starting point may be an arbitrary integer. In this embodiment, the starting point corresponding to each resource index is No special restrictions.

In a possible case, N = M, and at this time, each resource unit in the fourth frequency domain resource corresponds to each resource unit in the third frequency domain resource.

Detailed description is given below with reference to FIGS. 6 to 10. Among them, each square represents a resource of 4 RB wide, a square with a number is a second frequency domain resource, corresponding to a second SRS, a shaded square corresponds to a third frequency domain resource, and the connection between resource units indicates Corresponding relationship, the arrow line represents the first SRS sent on the first frequency domain resource after mapping.

As shown in FIG. 6, the number of second frequency domain resources (the complete set of fourth frequency domain resources) and the first frequency domain resources (the complete set of third frequency domain resources) are equal. According to the mapping rule, the second frequency domain resources and The first frequency domain resources correspond in order. For example, 1 corresponds to the first shadow block (resource unit with the number 3), 2 corresponds to the second shadow block (resource unit with the number 4), and 3 corresponds to the third shadow block (resource unit with the number 7). ) Corresponding ... etc. After the corresponding relationship is determined, the second SRS carried on the second frequency domain resource is carried by the first frequency domain resource corresponding to the second frequency domain resource, thereby determining the first frequency domain The first SRS sent on the resource.

As shown in FIG. 7, if the number of resource units included in the configured second frequency domain resource (the full set of fourth frequency domain resources) is greater than the resource units included in the first frequency domain resource (the full set of third frequency domain resources) , The first SRS only takes part of the second SRS for transmission, for example, only sends on a resource unit at a low frequency. For example, as shown in FIG. 7, the second frequency domain resource includes 6 resource units, and the first frequency domain resource includes 5 resource units. The resource unit included in the first frequency domain resource and the second frequency domain resource include Corresponding resource units in sequence, that is, all resource units included in the first frequency domain resource correspond to the first 5 resource units included in the second frequency domain resource in sequence, and the first SRS is the second corresponding to the first frequency domain resource. The SRS corresponding to the frequency domain resource, that is, the SRS corresponding to the first 5 resource units in the second frequency domain resource, will cause the SRS corresponding to the 6th resource unit to be discarded.

As shown in FIG. 8, if the number of resource units included in the configured second frequency domain resource (the complete set of fourth frequency domain resource units) is less than the number of resource units included in the third frequency domain resource, the second SRS only Send on the first frequency domain resource in the third frequency domain resource. For example, as shown in FIG. 8, the second frequency domain resource includes 6 resource units, the third frequency domain resource includes 7 resource units, the resource unit included in the third frequency domain resource and the resource included in the second frequency domain resource. The units correspond in order, then the first 6 resource units in the third frequency domain resource correspond to the resource units included in the second frequency domain resource, and the first frequency domain resource is the first 6 frequency domains in the third frequency domain resource. Domain unit, the first SRS is the SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource. In FIG. 8, no SRS is transmitted in the last resource unit in the third frequency domain resource.

As shown in FIG. 9, the second frequency domain resource is a subset of the fourth frequency domain resource, that is, the last three resource units of the six resource units of the fourth frequency domain resource are the second frequency domain resource. The third frequency domain resource includes 5 resource units. The resource units included in the third frequency domain resource correspond to the resource units included in the fourth frequency domain resource in order. Then, the last two resource units in the third frequency domain resource have a corresponding relationship with the second frequency domain resource. The last two frequency domain resources in the three frequency domain resources are the first frequency domain resources, and the first SRS is the SRS corresponding to the second frequency domain resources corresponding to the first frequency domain resources.

In this embodiment, if frequency hopping is taken into consideration, the network device may also send a frequency hopping rule to the terminal device, or pre-define the frequency hopping rule. Rule to determine the first SRS sent on the first frequency domain resource; wherein the frequency hopping rule is used to indicate the second frequency domain resource corresponding to each hop, and the implementation of frequency hopping can be seen in FIG. 10.

As shown in FIG. 10, the SRS transmission is frequency hopped between time t and t + 1, time t + 1 and t + 2, and time t is the initial time. The second indication information is used to determine t The first two resource units in the fourth frequency domain resource at the moment are the second frequency domain resource, and the mapping rule is used to indicate that the last two resource units in the fourth frequency domain resource at time t + 1 are the second frequency domain resource, and t The middle two resource units in the fourth frequency domain resource at time +2 are the second frequency domain resource. The first indication information indicates a third frequency domain resource, that is, a resource unit indicated by a shade in FIG. 10.

At time t, time t + 1, and time t + 2, the mapping rules can use the methods shown in Figures 6 to 9 above. The results obtained after mapping can be shown in Figure 10, and some shadows are filled with numbers. The digitally filled resource units are the first frequency domain resources corresponding to the second frequency domain resources, and the SRS corresponding to the second frequency domain resources corresponding to the first frequency domain resources is the first SRS.

Another possible mapping rule

The mapping rule is a rule corresponding to a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and having the same frequency domain position as the third frequency domain resource, wherein the first frequency domain resource is Among the third frequency domain resources, resources that have a corresponding relationship with the second frequency domain resources, and the first SRS is an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

In this embodiment, if the second frequency domain resource is a complete set of fourth frequency domain resources and the first frequency domain resource is a complete set of third frequency domain resources, the mapping rule is specifically a resource included in the first frequency domain resource. A rule that a unit corresponds to a resource unit included in the second frequency domain resource and having the same frequency domain position as the first frequency domain resource.

In this embodiment, the same frequency domain position may be the same in the absolute frequency domain, that is, two resource units have the same frequency, or have the same frequency offset for the same frequency domain reference point; the same frequency domain position may also be relative The frequency domain is the same, where the same relative frequency domain means that the two resource units have the same relative frequency offset relative to their respective frequency domain reference points, or have the same frequency domain serial number or index.

Detailed description is given below with reference to FIGS. 11 to 16. Among them, each square represents a resource of 4 RB wide, a square with a number is a second frequency domain resource, corresponding to a second SRS, a shaded square corresponds to a third frequency domain resource, and the connection between resource units indicates Corresponding relationship, the arrow line represents the first SRS sent on the first frequency domain resource after mapping.

As shown in FIG. 11, the second frequency domain resource is a complete set of fourth frequency domain resources, and the first frequency domain resource is a complete set of third frequency domain resources. According to the mapping rule, the resource units included in the first frequency domain resource and the The resource units included in the second frequency domain resource and corresponding to the first frequency domain resource have the same frequency domain location. As can be seen from FIG. 11, the resource units with

sequence numbers

3, 4, 7, 8, 9, and 14 in the second frequency domain resource and the resource units in the first frequency domain resource have the same frequency domain position in the absolute frequency domain. The SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource is the first SRS, that is, the SRS corresponding to the resource unit with the

sequence number

3, 4, 7, 8, 9, and 14 in the second frequency domain resource. That is the first SRS.

As shown in FIG. 12, the second frequency domain resource is a subset of the fourth frequency domain resource, and four of the 16 resource units included in the fourth frequency domain resource are the second frequency domain resource. According to the mapping rule, the resource unit included in the third frequency domain resource corresponds to the resource unit included in the second frequency domain resource and has the same frequency domain position as the third frequency domain resource. It can be known from FIG. 12 that the first two resource units among the resource units included in the second frequency domain resource and the resource units included in the third frequency domain resource have the same frequency domain position in the absolute frequency domain. The first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, that is, the last two resource units in the third frequency domain resource are the first frequency domain resource. The SRS corresponding to the second frequency domain resource corresponding to the domain resource is the first SRS.

As shown in FIG. 13, the resource unit of the third frequency domain resource and the resource unit of the fourth frequency domain resource located on the same dashed line have the same absolute frequency domain position, but the embodiment of the present application is also applicable to the comparison by the relative frequency domain position. Corresponding scenarios, at this time, the frequency reference points of the third frequency domain resource and the fourth frequency domain resource are respectively shown by the thick arrows in FIG. 13. The resource units included in the third frequency domain resource and the resource units included in the second frequency domain resource have the same relative frequency offset with respect to their respective frequency reference points, or have the same frequency domain serial number or index, which have the same Relative frequency domain position. It can be known from FIG. 13 that the last two resource units in the third frequency domain resource and the first two resource units in the second frequency domain resource have the same relative frequency domain position. The first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, that is, the last two resource units in the third frequency domain resource are the first frequency domain resource. The SRS corresponding to the second frequency domain resource corresponding to the domain resource is the first SRS.

In this embodiment, if frequency hopping is taken into consideration, the network device further sends a frequency hopping rule to the terminal device, or the network device and the terminal device predefine the frequency hopping rule, and the terminal device according to the first instruction information, the second instruction information, and the mapping The rule and the frequency hopping rule determine the first SRS sent on the first frequency domain resource. The frequency hopping rule is used to indicate a second frequency domain resource corresponding to each hop. For the implementation of frequency hopping, see FIG. 14 to FIG. 16.

As shown in FIG. 14, the SRS transmission is frequency hopped between time t and time t + 1, time t + 1 and time t + 2, and time t is the initial time. The second indication information is used to determine t The first four resource units in the fourth frequency domain resource at the time are second frequency domain resources, and the mapping rule is used to indicate that the last four resource units in the fourth frequency domain resource at time t + 1 are the second frequency domain resource, and t The fifth to eighth resource units in the fourth frequency domain resource at time +2 are the second frequency domain resource. The first indication information indicates a third frequency domain resource, that is, a resource unit indicated by a shade in FIG. 14.

At time t, time t + 1, and time t + 2, the mapping rules can adopt the methods shown in Figures 11 to 13 above. The results obtained after mapping can be shown in Figure 14, and some shadows are filled with numbers. These digitally filled resource units are the first frequency domain resources, the first frequency domain resources are the resources in the third frequency domain resources that have a corresponding relationship with the second frequency domain resources, and the first SRS is the corresponding one of the first frequency domain resources. SRS corresponding to the second frequency domain resource.

As shown in FIG. 15, it is different from FIG. 14 in frequency hopping. In a certain hop, all frequency domain resources that may send SRS may not belong to the third frequency domain resource. If the frequency hopping rules are not optimized, it may happen that "the SRS is not sent at all in a certain hop". In FIG. 15, in the second line of the figure (time t + 1, n _SRS = k + 1 hops, n _SRS is a frequency hop count), the frequency domain resources corresponding to SRS are not SRS-capable. Resources, so there is virtually no SRS to send at the moment.

In this case, it is actually a waste of "opportunity to send SRS". In response to this problem, in the case of frequency hopping, if the terminal device is unable to send any second SRS in the third frequency domain resource during a frequency hopping transmission, the terminal device immediately causes the frequency hopping count n _SRS +1 to calculate the next hop The first frequency domain resource for sending the SRS in the third frequency domain resource until the first frequency domain resource in the third frequency domain resource is available for sending at least a part of the SRS (that is, if the n _SRS corresponding to time t corresponds to There is a first frequency domain resource for _SRS , but there is no first frequency domain resource for the resources corresponding to SRS in n _SRS +1,..., N _SRS + k-1 hops, and there is a first frequency domain for n _SRS + k. Domain resources, the terminal device will send the corresponding SRS on the first frequency domain resource corresponding to n _SRS + k at time t + 1). As shown in FIG. 16, at time t + 1, the frequency hopping count is n _SRS = k + 2 hops instead of n _SRS = k + 1 hops. In this embodiment, the invalid sending time is removed, the timing and resources for sending SRS are saved, the time for traversing the full bandwidth is reduced, and the network device can more quickly obtain the channel quality of the terminal device in the full bandwidth.

In the specific implementation process, the specific mapping rules are not limited to the mapping rules described above, and there may be other mapping rules. For example, each of the above mapping rules can be deduced or transformed to obtain new mapping rules, or The above two types of mapping rules are combined to perform deduction or transformation to obtain a new mapping rule. In this embodiment, the specific implementation of the mapping rule is not particularly limited. Alternatively, the terminal device and the network device may agree on at least two rules involved in the present invention in advance, and the network device may notify the terminal device to use one of the rules for sending the SRS.

The terminal device can obtain the first frequency domain resource and the first SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and the mapping rule. Those skilled in the art can understand that the first SRS is part or all of the second SRS. For example, when the first resource unit included in the first frequency domain resource and the second resource unit included in the second frequency domain resource have a corresponding relationship, the SRS sent on the first resource unit is the SRS corresponding to the second resource unit.

Further, the first SRS may be a transformation based on part or all of the second SRS. For example, when the first resource unit included in the first frequency domain resource and the second resource unit included in the second frequency domain resource have a corresponding relationship, the SRS sent on the first resource unit is the SRS corresponding to the second resource unit. Transformations, such as conjugate transformations, reverse order transformations, and so on.

The reference signal transmission method provided in the embodiment of the present application sends first instruction information, second instruction information, and mapping rules to a terminal device through a network device; the terminal device receives the first instruction information, second instruction information, and mapping rules from the network device, The first indication information is used to determine the first frequency domain resource, the second indication information is used to determine the second SRS corresponding to the second frequency domain resource and the second frequency domain resource, and the mapping rule is used to determine the first frequency domain resource and Correspondence between second frequency domain resources. The mapping rule may also be predetermined by the terminal device and the network device, that is, the network device does not send the mapping rule to the terminal device, and the network device may send the first instruction information and the second instruction information to the terminal device. The terminal device determines the first frequency domain resource and the first SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and the mapping rule. The terminal device sends the first frequency domain resource to the network device on the first frequency domain resource. SRS: The network device receives the first SRS from the terminal device on the first frequency domain resource, and enables the terminal device to send SRS on the first frequency domain resource that is discontinuous or irregular without breaking the SRS transmission mechanism. The network device can receive the SRS sent by the terminal device to estimate the channel quality, so that the terminal device and the network device can transmit data on the first frequency domain resource, which improves the system transmission performance.

On the basis of the foregoing embodiments, the embodiments of the present application are also applicable to a process of sending uplink data. For example, the present invention can also be used for sending uplink data, such as sending a Physical Uplink Shared Channel (PUSCH). At present, there are two types of frequency domain resource allocation for PUSCH, which are type 0 and type 1. Detailed descriptions are respectively given below.

Type 0: Bitmap resource allocation indication.

In the frequency domain resource allocation of type 0, a bit bitmap is used to indicate the resource allocation of the RBG. The value of each bit in the bit bitmap indicates whether an RBG is allocated to the terminal device for PUSCH transmission. The number of RBs included in an RBG is related to the bandwidth of the BWP:

Type 1: Resource indication value RIV-style resource allocation indication.

In the frequency domain resource allocation of type 1, the network device indicates a frequency domain resource allocated to the terminal by instructing the terminal device with an RIV value, and the resource is a continuous resource unit.

In this application, the above mapping rules may be used for resource allocation of type 0 or type 1. Among them, for type 0, although it can indicate a discontinuous RBG, and to some extent can be adapted to data transmission on a discrete spectrum, its indication granularity is RBG, and the RBG granularity increases as the BWP bandwidth increases. , May not be able to accurately adapt to the actual available RBs of the discrete spectrum. Therefore, the embodiment shown in FIG. 4 described above can also be applied to the resource allocation of type 0 or type 1 in this embodiment, and is used to indicate the sending resource of uplink data. The detailed description is described below with reference to the embodiments shown in FIG. 17 and FIG. 18.

As shown in FIG. 17 and FIG. 18, among the fourth frequency domain resources, those with fill colors are the second frequency domain resources, and those with shadows are the third frequency domain resources. The mapping rule adopted in FIG. 17 is a rule in which the resource units included in the third frequency domain resource and the resource units included in the fourth frequency domain resource correspond in order, where the first frequency domain resource is the third frequency domain resource and the first The two frequency domain resources have frequency domain resources corresponding to each other. The mapping rule used in FIG. 18 is a rule corresponding to a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and having the same frequency domain position as the third frequency domain resource. The frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource. The above-mentioned first frequency domain resource is used to send uplink data. Optionally, the data sent on the first frequency domain resource may be corresponding data on a corresponding second resource.

The embodiment of the present application enables a terminal device to send uplink data on a discontinuous or irregular first frequency domain resource without damaging the uplink data sending mechanism, and the network device can receive the uplink data sent by the terminal device, which improves System transmission performance.

FIG. 19 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 19, the terminal device 190 provided in the embodiment of the present application includes a processing module 1901 and a sending module 1902.

A processing module 1901 is configured to determine a first frequency domain resource and a first sounding reference signal SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and a mapping rule, where the first The indication information is used to determine a first frequency domain resource, the second indication information is used to determine a second frequency domain resource and a second SRS corresponding to the second frequency domain resource, and the mapping rule is used to determine the first frequency domain resource A correspondence between a frequency domain resource and the second frequency domain resource;

A sending module 1902 is configured to send the first SRS to a network device on the first frequency domain resource.

Optionally, the first indication information is used to indicate a third frequency domain resource, the first frequency domain resource is a resource in the third frequency domain resource, and the second indication information is used to determine a fourth frequency A second frequency domain resource in the domain resource and a second SRS corresponding to the second frequency domain resource, the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used to indicate the first The corresponding relationship between the three frequency domain resources and the fourth frequency domain resource.

Optionally, the mapping rule is a rule in which a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource correspond in order, wherein the first frequency domain resource is Among the third frequency domain resources, a frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS is an SRS corresponding to a second frequency domain resource corresponding to the first frequency domain resource.

Optionally, the mapping rule is a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and having the same frequency domain position as the third frequency domain resource. A corresponding rule, wherein the first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS corresponds to the first frequency domain resource. SRS corresponding to the second frequency domain resource.

Optionally, the first indication information is a bitmap corresponding to a fifth frequency domain resource, and the bits in the bitmap are used to indicate a third frequency domain resource in the fifth frequency domain resource.

Optionally, the first indication information includes at least one resource indication information, each of the resource indication information is used to indicate one resource unit or a plurality of consecutive resource units, and the third frequency domain resource includes each of the resources The resource unit indicated by the indication information.

Optionally, the processing module is specifically configured to determine, according to the first instruction information, the second instruction information, the mapping rule, and a frequency hopping rule, a first sent on the first frequency domain resource. SRS; wherein the frequency hopping rule is used to indicate a second frequency domain resource corresponding to each hop.

The terminal device provided in this embodiment may be used to execute the method performed by the terminal device in the foregoing embodiments, and the implementation principles and technical effects thereof are similar. This embodiment will not repeat them here.

FIG. 20 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 20, the network device 200 provided in the embodiment of the present application includes: a sending module 2001 and a receiving module 2002.

A sending module 2001 is configured to send first indication information, second indication information, and mapping rules to a terminal device, where the first indication information is used to determine a first frequency domain resource, and the second indication information is used to determine a first A second SRS corresponding to two frequency domain resources and the second frequency domain resource, and the mapping rule is used to determine a correspondence between the first frequency domain resource and the second frequency domain resource;

The receiving module 2002 is configured to receive the first SRS from the terminal device on the first frequency domain resource.

Optionally, the sending module 2001 is specifically configured to send the first indication information, the second indication information, the mapping rule, and the frequency hopping rule to a terminal device; wherein the frequency hopping rule is used to indicate each The corresponding second frequency domain resource is hopped.

The network device provided in this embodiment may be used to execute the method performed by the network device in the foregoing embodiments, and its implementation principles and technical effects are similar. This embodiment will not repeat them here.

FIG. 21 is a hardware schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 21, the terminal device 210 includes at least one processor 2101 and a memory 2102. among them

A memory 2102, configured to store a computer executing instructions;

The processor 2101 is configured to execute a computer execution instruction stored in a memory to implement each step performed by the terminal device in the foregoing embodiment. For details, refer to related descriptions in the foregoing method embodiments.

Optionally, the memory 2102 may be independent or integrated with the processor 2101.

When the memory 2102 is a device independent of the processor 2101, the terminal device 210 may further include a bus 2103, configured to connect the memory 2102 and the processor 2101.

The terminal device 210 shown in FIG. 21 may further include a communication component 2103 for sending a first SRS to the network device or receiving configuration parameters from the network device.

FIG. 22 is a hardware schematic diagram of a network device according to an embodiment of the present application. As shown in FIG. 22, the network device 220 includes at least one processor 2201 and a memory 2202. among them

A memory 2202, configured to store instructions executed by a computer;

The processor 2201 is configured to execute a computer execution instruction stored in the memory to implement each step performed by the network device in the foregoing embodiment. For details, refer to related descriptions in the foregoing method embodiments.

Optionally, the memory 2202 may be independent or integrated with the processor 2201. When the memory 2202 is a device independent of the processor 2201, the network device 220 may further include a bus 2203 for connecting the memory 2202 and the processor 2201.

The network device 220 shown in FIG. 22 may further include a communication component 2203 for sending configuration parameters to the terminal device or receiving the first SRS from the terminal device.

In the above embodiments, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, abbreviated as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviated as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, ASIC for short) and so on. 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 invention can be directly embodied as being executed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

The memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as at least one disk memory. The bus may be an Industry Standard Architecture (ISA) bus, an External Device Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

An embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are executed, the method implemented by the terminal device is executed.

An embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are executed, the method implemented by the network device is performed.

An embodiment of the present application further provides a computer program product, where the computer program product includes computer program code, and when the computer program code runs on a computer, the computer executes a method implemented by a terminal device.

An embodiment of the present application further provides a computer program product, where the computer program product includes computer program code, and when the computer program code runs on a computer, the computer executes a method implemented by a network device.

An embodiment of the present application provides a chip including a memory and a processor, where the memory is used to store a computer execution instruction, and the processor is used to call and run the computer execution instruction from the memory, so that the chip executes the above Method implemented by the terminal device.

An embodiment of the present application provides a chip including a memory and a processor, where the memory is used to store a computer execution instruction, and the processor is used to call and run the computer execution instruction from the memory, so that the chip executes the above A method implemented by a network device.

The foregoing computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable and removable Programming read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. A readable storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.

An exemplary readable storage medium is coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be part of the processor. The processor and the readable storage medium may be located in application specific integrated circuits (Application Specific Integrated Circuits, ASIC for short). Of course, the processor and the readable storage medium may also exist as discrete components in a terminal device or a network device.

Claims

A reference signal transmission method, comprising:

The terminal device determines a first frequency domain resource and a first sounding reference signal SRS sent on the first frequency domain resource according to the first indication information, the second indication information, and a mapping rule, where the first indication information is used for Determine a first frequency domain resource, the second indication information is used to determine a second frequency domain resource and a second SRS corresponding to the second frequency domain resource, and the mapping rule is used to determine the first frequency domain resource and The corresponding relationship of the second frequency domain resources;

Sending, by the terminal device, the first SRS to a network device on the first frequency domain resource.
The method according to claim 1, wherein the first indication information is used to indicate a third frequency domain resource, the first frequency domain resource is a resource in the third frequency domain resource, and the first The two indication information are used to determine a second frequency domain resource in the fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource. The third frequency domain resource is different from the fourth frequency domain resource. The mapping rule is used to indicate a correspondence between the third frequency domain resource and the fourth frequency domain resource.
The method according to claim 2, wherein the mapping rule is a rule corresponding to a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource in order, wherein The first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS is a second frequency domain resource corresponding to the first frequency domain resource SRS corresponding to frequency domain resources.
The method according to claim 2, wherein the mapping rule is a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and the third frequency domain A rule corresponding to resource units having the same frequency domain location, wherein the first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.
The method according to any one of claims 2 to 4, wherein the first indication information is a bitmap corresponding to a fifth frequency domain resource, and the bits in the bitmap are used to indicate the The third frequency domain resource among the fifth frequency domain resources will be described.
The method according to any one of claims 2 to 4, wherein the first indication information includes at least one resource indication information, and each of the resource indication information is used to indicate one resource unit or multiple consecutive resources Unit, the third frequency domain resource includes a resource unit indicated by each of the resource indication information.
The method according to any one of claims 1 to 6, wherein the terminal device determines the first sounding reference signal sent on the first frequency domain resource according to the first indication information, the second indication information, and a mapping rule. SRS, including:

Determining, by the terminal device, a first SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, the mapping rule, and a frequency hopping rule; wherein the frequency hopping The rule is used to indicate a second frequency domain resource corresponding to each hop.
A reference signal transmission method, comprising:

The network device sends first instruction information, second instruction information, and mapping rules to the terminal device, where the first instruction information is used to determine a first frequency domain resource, and the second instruction information is used to determine a second frequency domain resource A second SRS corresponding to the second frequency domain resource, and the mapping rule is used to determine a correspondence between the first frequency domain resource and the second frequency domain resource;

Receiving, by the network device, the first SRS from the terminal device on the first frequency domain resource.
The method according to claim 8, wherein the first indication information is used to indicate a third frequency domain resource, the first frequency domain resource is a resource in the third frequency domain resource, and the first The two indication information are used to determine a second frequency domain resource in the fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource. The third frequency domain resource is different from the fourth frequency domain resource. The mapping rule is used to indicate a correspondence between the third frequency domain resource and the fourth frequency domain resource.
The method according to claim 9, wherein the mapping rule is a rule in which a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource correspond in order, wherein The first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS is a second frequency domain resource corresponding to the first frequency domain resource SRS corresponding to frequency domain resources.
The method according to claim 9, wherein the mapping rule is a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and the third frequency domain resource. A rule corresponding to resource units having the same frequency domain location, wherein the first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.
The method according to any one of claims 9 to 11, wherein the first indication information is a bit map corresponding to a fifth frequency domain resource, and the bits in the bit map are used to indicate the The third frequency domain resource among the fifth frequency domain resources will be described.
The method according to any one of claims 9 to 11, wherein the first indication information includes at least one resource indication information, and each of the resource indication information is used to indicate a resource unit or multiple consecutive resources Unit, the third frequency domain resource includes a resource unit indicated by each of the resource indication information.
The method according to any one of claims 8 to 13, wherein the network device sending the first instruction information, the second instruction information, and the mapping rule to the terminal device includes:

Sending, by the network device, the first indication information, the second indication information, the mapping rule, and the frequency hopping rule to a terminal device; wherein the frequency hopping rule is used to indicate a second frequency domain corresponding to each hop Resources.
A terminal device, comprising:

A processing module, configured to determine a first frequency domain resource and a first sounding reference signal SRS sent on the first frequency domain resource according to the first instruction information, the second instruction information, and a mapping rule, wherein the first instruction Information is used to determine a first frequency domain resource, the second indication information is used to determine a second frequency domain resource and a second SRS corresponding to the second frequency domain resource, and the mapping rule is used to determine the first frequency domain resource A correspondence between a domain resource and the second frequency domain resource;

A sending module, configured to send the first SRS to a network device on the first frequency domain resource.
The terminal device according to claim 15, wherein the first indication information is used to indicate a third frequency domain resource, and the first frequency domain resource is a resource in the third frequency domain resource, and the The second indication information is used to determine a second frequency domain resource in a fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource, where the third frequency domain resource is different from the fourth frequency domain resource, The mapping rule is used to indicate a correspondence between the third frequency domain resource and the fourth frequency domain resource.
The terminal device according to claim 16, wherein the mapping rule is a rule in which a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource correspond in sequence, The first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS is a first frequency domain resource corresponding to the first frequency domain resource. SRS corresponding to the second frequency domain resource.
The terminal device according to claim 16, wherein the mapping rule is a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and the third frequency domain resource A rule that a domain resource has resource units with the same frequency domain location, wherein the first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first The SRS is an SRS corresponding to a second frequency domain resource corresponding to the first frequency domain resource.
The terminal device according to any one of claims 16 to 18, wherein the first indication information is a bitmap corresponding to a fifth frequency domain resource, and the bits in the bitmap are used to indicate A third frequency domain resource among the fifth frequency domain resources.
The terminal device according to any one of claims 16 to 18, wherein the first indication information includes at least one resource indication information, and each of the resource indication information is used to indicate one resource unit or a plurality of consecutive A resource unit, and the third frequency domain resource includes a resource unit indicated by each of the resource indication information.
A network device, comprising:

A sending module, configured to send first indication information, second indication information, and mapping rules to a terminal device, where the first indication information is used to determine a first frequency domain resource, and the second indication information is used to determine a second frequency domain resource; A second SRS corresponding to the frequency domain resource and the second frequency domain resource, and the mapping rule is used to determine a correspondence between the first frequency domain resource and the second frequency domain resource;

A receiving module, configured to receive the first SRS from the terminal device on the first frequency domain resource.
The network device according to claim 21, wherein the first indication information is used to indicate a third frequency domain resource, and the first frequency domain resource is a resource in the third frequency domain resource, and the The second indication information is used to determine a second frequency domain resource in a fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource, where the third frequency domain resource is different from the fourth frequency domain resource, The mapping rule is used to indicate a correspondence between the third frequency domain resource and the fourth frequency domain resource.
The network device according to claim 22, wherein the mapping rule is a rule in which a resource unit included in the third frequency domain resource and a resource unit included in the fourth frequency domain resource correspond in order, The first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first SRS is a first frequency domain resource corresponding to the first frequency domain resource. SRS corresponding to the second frequency domain resource.
The network device according to claim 22, wherein the mapping rule is a resource unit included in the third frequency domain resource and a resource unit included in the second frequency domain resource and the third frequency domain resource A rule that a domain resource has resource units with the same frequency domain location, wherein the first frequency domain resource is a resource in the third frequency domain resource that has a corresponding relationship with the second frequency domain resource, and the first The SRS is an SRS corresponding to a second frequency domain resource corresponding to the first frequency domain resource.
The network device according to any one of claims 22 to 24, wherein the first indication information is a bitmap corresponding to a fifth frequency domain resource, and the bits in the bitmap are used to indicate A third frequency domain resource among the fifth frequency domain resources.
The network device according to any one of claims 22 to 24, wherein the first indication information includes at least one resource indication information, and each of the resource indication information is used to indicate a resource unit or a plurality of consecutive A resource unit, and the third frequency domain resource includes a resource unit indicated by each of the resource indication information.
A terminal device, comprising: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes computer-executable instructions stored in the memory, so that the at least one processor executes the method according to any one of claims 1 to 7.
A network device, comprising: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes computer-executable instructions stored in the memory, so that the at least one processor executes the method according to any one of claims 8 to 14.
A computer-readable storage medium, characterized in that computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed, the method according to any one of claims 1 to 7 is implemented Or, implement the method according to any one of claims 8 to 14.