CN110831162A

CN110831162A - Reference signal transmission method and device

Info

Publication number: CN110831162A
Application number: CN201810893426.2A
Authority: CN
Inventors: 费永强; 郭志恒; 谢信乾; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-08-07
Filing date: 2018-08-07
Publication date: 2020-02-21
Anticipated expiration: 2038-08-07
Also published as: CN110831162B; WO2020029963A1

Abstract

The embodiment of the application provides a reference signal transmission method and equipment, wherein the method comprises the following steps: the method comprises the steps that terminal equipment determines a first frequency domain resource and a first Sounding Reference Signal (SRS) sent on the first frequency domain resource according to first indication information, second indication information and a mapping rule, wherein the first indication information is used for determining the first frequency domain resource, the second indication information is used for determining a second SRS corresponding to a second frequency domain resource and the second frequency domain resource, and the mapping rule is used for determining the corresponding relation between the first frequency domain resource and the second frequency domain resource; and the terminal equipment sends the first SRS to network equipment on the first frequency domain resource, so that the network equipment can accurately acquire the uplink channel quality of the terminal equipment.

Description

Reference signal transmission method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a reference signal transmission method and device.

Background

A Sounding Reference Signal (SRS) is a kind of reference signal used for measuring an uplink channel. The terminal device sends the uplink SRS, 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 provide reference basis for uplink resource allocation, modulation and coding configuration, multi-antenna transmission parameter setting, and the like.

Currently, in a New Radio access technology (NR) system, frequency domain resources used by a terminal device for transmitting an SRS are predefined. Specifically, in the frequency domain, whether the SRS is transmitted by frequency hopping or transmitted by non-frequency hopping, the frequency domain resources used by the terminal device for transmitting the SRS are contiguous RB resources on a predefined Resource Block (RB) grid. Wherein the continuous RB resource is considered from the RB granularity, and start and end positions of the continuous RB resource are also predefined.

However, in the future evolution of NR, the bandwidth resources configured for the terminal device may include a plurality of discrete frequency bands or include irregular available frequency bands, and these discrete frequency bands or irregular available frequency bands cannot be covered by predefined continuous RB resources, which results in that the terminal device cannot normally transmit SRS to the network device, or that the SRS transmitted by the terminal device cannot 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 uplink channel quality of the terminal device.

Disclosure of Invention

The embodiment of the application provides a reference signal transmission method and device, and network equipment can accurately acquire the uplink channel quality of terminal equipment.

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

the terminal device receives the first indication information, the second indication information and the mapping rule from the network device, optionally, the mapping rule may also be agreed in advance 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 first indication information, second indication information and a mapping rule, wherein the first indication information is used for determining the first frequency domain resource, and the first frequency domain resource 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 a second SRS corresponding to the second frequency domain resource, where the second frequency domain resource is a continuous frequency domain resource, that is, a resource specified by a protocol that can be used to transmit an SRS, and the second SRS is an SRS carried on the continuous frequency domain resource; the mapping rule is used for determining the corresponding relation between the first frequency domain resource and the second frequency domain resource; the first SRS carried on the first frequency domain resource is the SRS corresponding to the second frequency domain resource which has a corresponding relation with the first frequency domain resource;

and the terminal equipment sends the first SRS to the network equipment on the first frequency domain resource, and the network equipment can estimate a channel bearing the first SRS, so that the uplink channel quality of the terminal equipment can be accurately obtained.

In one possible design, the first indication information is used to indicate third frequency domain resources, where the first frequency domain resources are resources in the third frequency domain resources, that is, the first frequency domain resources are a subset of the third frequency domain resources, the second indication information is used to determine second frequency domain resources in fourth frequency domain resources and second SRS corresponding to the second frequency domain resources, and the second frequency domain resources are a subset of the fourth frequency domain resources; the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used for indicating the corresponding relationship between the third frequency domain resource and the fourth frequency domain resource.

In a possible design, the mapping rule is a rule that resource units included in the third frequency domain resource and resource units included in the fourth frequency domain resource correspond to each other in sequence, where the first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a correspondence 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. The sequence may be a natural sequence according to the sequence number or index of the resource unit, or the sequence may be a sequence from the lower frequency domain to the higher frequency domain according to the frequency domain resource.

In a possible design, the mapping rule is a rule corresponding to resource units included in the third frequency domain resource and resource units included in the second frequency domain resource and having the same frequency domain position as the third frequency domain resource, where 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 an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

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

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

In one possible design, the first indication information may include at least one list information indicating available frequency domain resources, and the third frequency domain resources may include 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 start position, the second list includes N elements, each element indicates an end position, and an ith element of the first list and an ith element of the second list may determine a segment of consecutive resource units. When the number of the elements in the first list and the number of the elements in the second list are both multiple, multiple segments of consecutive resource units exist, and thus, the third frequency domain resource is composed of a union of at least one segment of consecutive resource units. 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 indication information.

In one possible design, the second indication information includes first SRS bandwidth indication information and second SRS bandwidth indication information, the first SRS bandwidth indication information indicating a plurality of SRS bandwidths, and the second SRS bandwidth indication information indicating one of the plurality of SRS bandwidths.

In one 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; and the terminal equipment receives cell public indication information from the network equipment, wherein the cell public indication information carries first indication information, second indication information and a mapping rule.

In one possible design, the resource unit is a resource unit corresponding to the minimum RB number or the number of REs corresponding to the comb rank of an SRS transmitted by a terminal device, and the terminal device receives user-specific indication information from the network device, where the user-specific indication information carries first indication information, second indication information, and a mapping rule.

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

the terminal equipment determines a first SRS sent on the first frequency domain resource according to the first indication information, the second indication information, the mapping rule and the frequency hopping rule; the frequency hopping rule is used for indicating 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 method comprises the steps that network equipment sends first indication information, second indication information and a mapping rule to terminal equipment, wherein the first indication information is used for determining first frequency domain resources, the second indication information is used for determining second frequency domain resources and second SRSs corresponding to the second frequency domain resources, and the mapping rule is used for determining the corresponding relation between the first frequency domain resources and the second frequency domain resources;

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

In one 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, 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, the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used to indicate a correspondence relationship between the third frequency domain resource and the fourth frequency domain resource.

In a possible design, the mapping rule is a rule that resource units included in the third frequency domain resource and resource units included in the fourth frequency domain resource correspond to each other in sequence, where the first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a correspondence 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 one possible design, the first indication information includes at least one resource indication information, each resource indication information is used to indicate one resource unit or multiple consecutive resource units, and the third frequency domain resource includes the resource units indicated by the resource indication information.

In one 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:

the network equipment sends the first indication information, the second indication information, the mapping rule and the frequency hopping rule to terminal equipment; the frequency hopping rule is used for indicating a second frequency domain resource corresponding to each hop.

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 first indication information, second indication information, and a mapping rule, where the first indication information is used to determine the 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 a correspondence between the first frequency 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 one possible design, the processing module is specifically configured to determine, according to the first indication information, the second indication information, the mapping rule, and a frequency hopping rule, a first SRS to be transmitted on the first frequency domain resource; the frequency hopping rule is used for indicating 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 a mapping rule to a terminal device, where the first 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 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; the frequency hopping rule is used for indicating 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 memory;

the memory stores computer-executable instructions;

the at least one processor executes computer-executable instructions stored by the memory to cause the at least one processor to perform a method as set forth in the first aspect or various possible designs of the first aspect above.

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

the memory stores computer-executable instructions;

the at least one processor executes the computer-executable instructions stored by the memory to cause the at least one processor to perform the method as set forth in the second aspect or various possible designs of the second aspect above.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored, and when the computer-executable instructions are executed, the method according to the first aspect or various possible designs of the first aspect is implemented.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions that, when executed, implement a method as set forth in the second aspect or various possible designs of the second aspect.

According to the reference signal transmission method provided by the embodiment of the application, first indication information, second indication information and a mapping rule are sent to terminal equipment through network equipment; the terminal device receives first indication information, second indication information and a mapping rule from the network device, wherein the first indication information is used for determining a 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 corresponding relation between the first frequency domain resource and the second frequency domain resource. 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 only needs to send the first indication information and the second indication information to the terminal device. The terminal device determines a first frequency domain resource and a first SRS sent on the first frequency domain resource according to the first indication information, the second indication information and the mapping rule, the terminal device sends the first SRS to the network device on the first frequency domain resource, the network device receives the first SRS from the terminal device on the first frequency domain resource, on the basis of not destroying an SRS sending mechanism, the terminal device is enabled to send the SRS on the discontinuous or irregular first frequency domain resource, the network device can receive the SRS sent by the terminal device for estimating the channel quality, so that the terminal device and the network device can transmit data on the first frequency domain resource, and the transmission performance of the system is improved.

Drawings

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

fig. 2 is a schematic diagram of frequency domain resources for transmitting an SRS according to an embodiment of the present disclosure;

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

fig. 4 is a signaling flowchart of a reference signal transmission method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a bitmap provided in an embodiment of the present application;

fig. 6 to fig. 18 are schematic diagrams of resource mapping provided in the embodiment of the present application;

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

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

fig. 21 is a hardware schematic diagram 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 the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The embodiment of the present application can be applied to a wireless communication system, and it should be noted that the wireless communication system mentioned in the embodiment of the present application includes but is not limited to: narrowband Band-Internet of Things (NB-IoT), Global System for Mobile Communications (GSM), Enhanced Data rates for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (Code Division Multiple Access, CDMA2000), Time Division-synchronous Code Division Multiple Access (TD-SCDMA), Long Term Evolution (Long Term Evolution, LTE), and next generation 5G Mobile communication systems NR.

A possible network architecture of an embodiment of the present application is described below with reference to fig. 1. Fig. 1 illustrates a network architecture to which embodiments of the present application may be applied. As shown in fig. 1, the network architecture provided by the present embodiment includes a network device 101 and a terminal device 102.

The Network device 101 is a device for accessing a terminal to a wireless Network, and may be a Base Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved node B (eNB, eNodeB) in Long Term Evolution (LTE), a relay Station or an Access point, or a Network side device (e.g., a Base Station) in a future 5G Network or a Network device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited herein. Fig. 1 schematically illustrates a possible example, which is illustrated by taking the network device 101 as a base station.

The terminal device 102 may be a wireless terminal or a wired terminal, and a wireless terminal may be a device that provides voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. The wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an access Terminal (access Terminal), a User Terminal (User Terminal), and a User Agent (User Agent), which are not limited herein.

Fig. 1 schematically depicts one possible schematic. Wherein the network device 101 and the terminal devices 102A-102F constitute a communication system. In the communication system, terminal devices 102A to 102F may send uplink data or signals to network device 101, and network device 101 needs to receive the uplink data or signals sent by terminal devices 102A to 102F; the network device 101 may send downlink data or signals to the terminal devices 102A to 102F, and the terminal devices 102A to 102F need to receive the downlink data or signals sent by the network device 101. In addition, the terminal devices 102D-102F may also constitute a communication system. In the communication system, the network device 101 may send downlink data to the terminal device 102A, the terminal device 102B, the terminal device 102E, and the like; the terminal device 102E may also send downlink data or signals to the terminal device 102D and the terminal device 102F.

In a New radio Access Technology (NR), a network device needs to obtain information of a wireless communication channel of a terminal device, so as to provide a reference basis for resource allocation, a modulation and coding method, multi-antenna transmission parameter setting, and the like. A method for obtaining uplink channel information of a terminal device is that the terminal device sends Sounding Reference Signals (SRS), and a network device estimates uplink channel quality of each terminal device on different frequencies by detecting the received SRS.

In NR, frequency domain resources occupied by SRS in the frequency domain are divided by a predefined number, and a terminal device transmits SRS in a predefined Resource Block (RB). Optionally, the network device may configure the SRS frequency domain resource of the terminal device. Table 1 is used to indicate frequency domain resources for transmitting SRS.

TABLE 1

Wherein, B_SRSAnd C_SRSIs bandwidth indication information. For convenience of explanation, C will be mentioned_SRSReferred to as first SRS Bandwidth indication information, B_SRSReferred to as second SRS bandwidth indication information. Wherein, C_SRSFor indicating multiple SRS bandwidths, B_SRSFor indicating C_SRSOne of the indicated plurality of SRS bandwidths; can also be described as B_SRSFor indicating multiple SRS bandwidths, C_SRSFor indicating B_SRSOne of the indicated plurality of SRS bandwidths. The present embodiment is not particularly limited to the specific description as long as C_SRSAnd B_SRSOne SRS bandwidth may be indicated collectively. m is_SRS,iIs shown at given C_SRSAnd the unit of the minimum SRS bandwidth which can be configured for the terminal equipment is RB. When i is 1,2 or 3, N_iIs represented as B_SRSWhen is equal to i, m_SRS,i-1M is comprised of_SRS,iThe number of (2); when i is 0, N_iThe value of (d) is fixed to 1. For example, with C_SRSBehavior example of 13, N₁＝2，m_SRS,0The indicated bandwidth is 48 (unit is the number of RBs), m_SRS,1The indicated bandwidth is 24, while 48 is decomposed into exactly 2 24; next column N ₂2 because 24 is broken down into 2 pieces 12; next column N ₃3 because 12 is broken down into 3 pieces 4.

With C in Table 1_SRSThe frequency domain resource of the SRS is described with reference to fig. 2 by taking 13 as an example. Fig. 2 is a schematic diagram of frequency domain resources for transmitting an SRS according to an embodiment of the present application. When configured as B, as shown in Table 1 and FIG. 2_SRSIf the configuration is 0, the terminal device transmits SRS to occupy all 48 RBs, as shown in the first row in the figure; if configured as B _SRS1, in this configuration, the terminal device may occupy 24 RBs of the 48 RBs at a low frequency or 24 RBs at a high frequency, as shown in the second row of the figure (specifically, which one of the 24 RBs at the low frequency or the 24 RBs at the high frequency is determined by other parameters); if configured as B_SRSThen, under this configuration, the terminal device transmits SRS in one of 4 resources with a length of 12 RBs divided from 48 RBs, as shown in the third row (specifically, which is determined by other parameters) for B _SRS3 and B_SRSSimilarly, the present embodiment will not be described herein.

When B is present_SRSWhen the value is not equal to 0, the network device may configure the terminal device to frequency hop to transmit the SRS. Fig. 3 is a schematic diagram of frequency hopping according to an embodiment of the present application. As shown in FIG. 3, C_SRS＝13，B_SRS＝2，n_SRSIs a count of frequency hops. Through frequency hopping, the SRS signal with narrower bandwidth can traverse the frequency range of the maximum bandwidth of the configurable SRS, so that the network equipment can know the channel quality of each terminal equipment in the whole bandwidth. Comparatively large bandwidth SRS signaling, assuming total transmitted powerThe power of the SRS signal with narrower bandwidth in the unit frequency is larger, the measurement of the network equipment is more accurate, but the SRS signal needs to be sent more times, and the time required for acquiring the channel quality of the whole bandwidth is longer.

It can be seen that in NR, in the frequency domain, whether frequency hopping or non-frequency hopping, the SRS transmitted by the terminal occupies resources of consecutive RBs on a predefined RB grid. Here, the continuity and discontinuity involved in the present embodiment are considered from the RB granularity, not from the frequency domain granularity of Resource Element (RE). Wherein, 1 RB includes 12 subcarriers, and 1 RE corresponds to 1 subcarrier; in subcarrier or RE granularity, SRS may be discontinuous, for example, SRS may be transmitted in comb (comb), where comb is 2, meaning SRS occupies 1 subcarrier per 2 subcarriers, comb is 4, meaning SRS occupies 1 subcarrier per 4 subcarriers; however, the RBs occupied by the SRS are continuous in view of RB granularity. In one SRS configuration, the SRS cannot occupy discontinuous RB resources; the resource occupied by the SRS cannot be an RB resource of any starting point or any length, and for example, in the arrangement of fig. 2, if 48 RBs are marked as RB0 to RB47 from low frequency to high frequency, B_SRSWhen the SRS of the terminal device occupies the resources of RB0 to RB11 but cannot occupy the resources of RB2 to RB13 in one transmission, the RBs 2 to RB13 are irregular frequency bands.

However, in some scenarios, due to technical (e.g. deep fading frequency band) or business factors (e.g. belonging to different operators), the resources that can be allocated to the terminal device are discrete frequency domain resources, or the continuous spectrum resources are different from the frequency domain resources where SRS transmission can be configured, where the discrete frequency domain resources are considered from RB granularity. For example, a Bandwidth Part (BWP) may include a plurality of discrete frequency bands, or a carrier (carrier) includes a plurality of discrete frequency bands, or the resource is an irregular frequency band RB2 to RB5, so that the conventional SRS transmission cannot work normally, and the network device cannot accurately know the uplink channel quality of the terminal device.

Based on this, an embodiment of the present invention provides a reference signal transmission method, where the method indicates a correspondence between available SRS frequency domain resources and original SRS frequency domain resources through a mapping rule, and determines an SRS transmitted on the available SRS frequency domain resources according to the correspondence. The following is a detailed description with reference to specific examples.

Fig. 4 is a signaling flowchart of a reference signal transmission method according to an embodiment of the present application. As shown in fig. 4, the method includes:

s401, the network equipment sends first indication information, second indication information and a mapping rule to the terminal equipment;

s402, the terminal device receives first indication information, second indication information and a mapping rule from the network device, wherein the first indication information is used for determining a 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 corresponding relation between the first frequency domain resource and the second frequency domain resource.

S403, 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 the mapping rule;

s404, the terminal equipment sends a first SRS to the network equipment 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 equipment configures the terminal equipment with frequency domain resources for sending the SRS, and the terminal equipment sends the SRS to the network equipment according to the configured frequency domain resources of the SRS. The network equipment sends the first indication information, the second indication information and the mapping rule to the terminal equipment so as to realize the resource allocation of the terminal equipment.

For example, the network device may send the first indication information, the second indication information and the mapping rule to the terminal device, and the terminal device may receive the first indication information, the second indication information and the mapping rule from the network device. Specifically, the network device may send the first indication information, the second indication information, and the mapping rule at the same time or sequentially at different times. Or, the network device may also carry the first indication information, the second indication information, and the mapping rule in one or more configuration information for transmission.

For example, the configuration Information may be Radio Resource Control (RRC) signaling or Downlink Control Information (DCI). The embodiment does not particularly limit the specific implementation manner of the network device sending the first indication information, the second indication information and the mapping rule to the terminal device. Optionally, the mapping rule may also be predefined 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 only needs to send the first indication information and the second indication information to the terminal device.

The first indication information and the second indication information are explained in detail below.

Wherein the first indication information is used for determining the first frequency domain resource. The first frequency domain resource may be a resource currently available to the terminal device for transmitting the SRS. The first frequency domain resource may be a discrete frequency domain resource or a continuous frequency domain resource. Alternatively, the first indication information may directly indicate the first frequency domain resource. Optionally, the first indication information is used to indicate third frequency domain resources, and the first frequency domain resources are resources in the third frequency domain resources, that is, the first frequency domain resources are a subset of the third frequency domain resources. Similarly, the third frequency domain resource is a resource currently available for the terminal device to transmit the SRS. The content indicated by the first indication information is not particularly limited in this embodiment, as long as the first indication information is used for determining the first frequency domain resource, that is, the terminal device may determine the first frequency domain resource according to the first indication information.

The second indication information is used for determining a second frequency domain resource and a second SRS corresponding to the second frequency domain resource. For example, 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 for transmitting an SRS and is specified by a protocol, and the second SRS is an SRS carried on the continuous frequency domain resource. The second indication information may include information indicating the 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 in the fourth frequency domain resource and a second SRS corresponding to the second frequency domain resource, where the second frequency domain resource is a subset of the fourth frequency domain resource, 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 the second frequency domain resource and the second SRS corresponding to the second frequency domain resource according to the second indication information.

Illustratively, as in the embodiment shown in table 1 above, the second indication information includes first SRS bandwidth indication information C_SRSAnd second SRS bandwidth indication information B_SRSThe first SRS bandwidth indication information is used for indicating a plurality of SRS bandwidths, and the second SRS bandwidth indication information is used for indicating one of the plurality of SRS bandwidths indicated by the first SRS bandwidth indication information. Wherein one of the plurality of SRS bandwidths is a second frequency domain resource. The terminal device may determine the bandwidth m corresponding to the second frequency domain resource according to the second indication information_SRS,i(i ═ 0,1,2,3), according to the bandwidth m_SRS,iAnd other information, such as comb information, etc., may determine the second SRS.

In the foregoing 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, 4 RBs may be included in one RBG in consideration that the SRS bandwidth is always an integer multiple of 4 RBs; or, considering m_SRS,iIs shown at given C_SRSMinimum SRS Bandwidth configurable to the terminal device, i.e. user-specific m_SRS,iRB at given C_SRSThe post SRS bandwidth is always m_SRS,iAn integer multiple of RB, so that RBG can be m_SRS,iAnd one RB. Compared with the indication of RB level, the indication of multi-RB (also RBG) granularity ensures the indication precisionThe indication overhead can be saved.

The granularity may also be multiple RE/reg (RE group) (e.g., 2RE, comb rank may be 2 or 4 considering SRS transmission in comb), or user specific K_TCRE, wherein K_TCIndicating the comb tooth level. Compared with the indication of RE level, the indication of multiple RE granularities saves the indication overhead on the premise of ensuring the indication precision.

Note that the granularity is user-specific m_SRS,iIndividual RB or user specific K_TCAnd the RE is suitable for indicating modes based on Bandwidth Part (BWP) (each BWP of each terminal device is respectively configured with the indication information and the mapping rule), because the minimum SRS Bandwidth or comb teeth configured by different terminal devices can be different and cannot be indicated by common information.

In this embodiment, the details are described taking the resource unit as RB or RBG as an example, and first, the implementation of the first indication information is described taking RB as an example.

In one possible example, the first indication information is a bitmap corresponding to the fifth frequency domain resource, and a bit in the bitmap is used to indicate a third frequency domain resource in the fifth frequency domain resource. Fig. 5 is a schematic diagram of a bitmap provided in an embodiment of the present application. As shown in fig. 5, the bitmap may be a cell common bitmap, i.e., a bitmap for indicating third frequency domain resources in the cell bandwidth. The bitmap may also be a bitmap of the portion of bandwidth allocated to the terminal device. Such as BWP1 and BWP2 shown in fig. 5.

In fig. 5, a shaded portion is a resource that can be a third frequency domain resource, and bit 1 is used to indicate one resource unit in the third frequency domain resource. For example, if the terminal device is configured in BWP1 for transmission, to indicate the RBs available for SRS transmission in BWP1, the indication may be made by bitmap {1,1,0,0,1} based on BWP 1. If the terminal device is configured to transmit in the cell bandwidth, it may be indicated by the cell common bitmap {0,0,1,1,0,0,1,1,1,0,0,0,0,1,0,0, 0 }.

As will be understood by those skilled in the art, according to the difference of the third frequency domain resource, when the network device sends the first indication information, the second indication information and the mapping rule to the terminal device, the network device may select the cell common indication information or the user specific indication information according to the resource unit of the third frequency domain resource. For example, common indication information may be selected for the cell common bitmap, and user specific indication information may be selected for BWP1, BWP 2. For the implementation of the common indication information and the user specific indication information, the detailed description of the embodiment is omitted here.

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 the resource units indicated by the respective resource indication information.

The resource indication information may be used to indicate { starting position, ending position }, { starting position, length }, { length, ending position }, and the like. Wherein { starting position, ending position } corresponds to a contiguous resource between the starting position as a starting point and the ending position as an ending point; { starting position, length } corresponds to a consecutive plurality of resource units of a specified length starting from the starting position; { length, end position } corresponds to a plurality of consecutive resource units of a specified length ending at the end position. Alternatively, the Resource Indication information may be a Resource Indication Value (RIV). The one RIV value corresponds one-to-one to a segment of contiguous resource units. The terminal equipment can determine a starting position, an ending position and the like according to the resource indication value.

When there are multiple continuous pieces of resources available for transmitting SRS in BWP or cell bandwidth, the first indication information may include multiple RIVs, or multiple { starting position, ending position }, or multiple { starting position, length }, and the indicated SRS-transmittable resource is a union of the multiple RIVs or multiple { starting position, ending position } or multiple { starting position, length }.

In yet another possible example, the first indication information includes at least one list information indicating available frequency domain resources, and the third frequency domain resources include 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 start position, and a second list including N elements, each element indicating an end position, and the third frequency domain resource is a union of a continuous piece of { start position, end position } resources, i ═ 1,2, …, N, which is determined by the ith element of the first list and the ith element of the second list. 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 indication information.

The mapping rules are explained in detail below.

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

In some scenarios, the mapping rule may directly indicate a correspondence of the first frequency-domain resource to 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 a correspondence relationship between the first frequency domain resource and the second frequency domain resource, and for other scenarios, this embodiment is not described herein again.

In other scenarios, the mapping rule is used to indicate a corresponding relationship between the third frequency domain resource and the fourth frequency domain resource, and the terminal device may determine the corresponding relationship between the first frequency domain resource and the second frequency domain resource according to the mapping rule.

Possible mapping rule

In a possible implementation manner, the mapping rule is a rule that resource units included in the third frequency domain resource and resource units included in the fourth frequency domain resource correspond in sequence, where the first frequency domain resource is a frequency domain resource in the third frequency domain resource, which has 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 full set of third frequency domain resources and the second frequency domain resource is a full set of fourth frequency domain resources, the mapping rule is a rule that resource units included in the first frequency domain resource and resource units included in the second frequency domain resource correspond in sequence, and the first SRS is an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

In this embodiment, the sequence may be a natural sequence according to the sequence number or index of the resource unit, or the sequence may be a sequence from the lower frequency domain of the frequency domain resource to the higher frequency domain of the frequency domain resource.

For example, taking resource units as RBs for example, the fourth frequency domain resource includes N resource units identified as RBs in order from low frequency to high frequency_iI-0, 1,2, …, N-1, the third frequency domain resource comprises M resource elements identified as RB in order from low to high frequency_jJ is 0,1,2, … M-1, and the third frequency domain resource may be identified as RB in the fifth frequency domain resource in order from low frequency to high frequency_AjJ is 0,1,2, … M-1, where Aj denotes an index of a jth resource element of the third frequency domain resource in the fifth frequency domain resource; the corresponding mapping rule is that the ith resource unit RB of the fourth frequency domain resource_iRB corresponding to ith resource unit of third frequency domain resource_iAnd the index of the resource unit in the 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 in the fourth frequency domain resource_BkK is 0,1,2, …, K-1, K is less than or equal to N, where Bk represents the index of the resource unit corresponding to the kth resource unit of the second frequency domain resource in the fourth frequency domain resource, the resource unit included in the first frequency domain resource corresponding to the second frequency domain resource is the resource unit with the index Bk in the third frequency domain resource, and the index of the resource unit corresponding to the fifth frequency domain resource is a_BkK is 0,1,2, … min { K, M } -1, and Bk ≦ M-1. For example, in the fig. 9 embodiment described below, the fourth frequency-domain resource includes an RB₀、RB₁、RB₂……RB₅The second frequency domain resource includes RB₀、RB₁、RB₂And is andRB of fourth frequency domain resource₃、RB₄、RB₅RBs respectively with second frequency domain resources₀、RB₁、RB₂Corresponding to (B0 ═ 3, B1 ═ 4, B2 ═ 5); the fifth frequency domain resource includes an RB₀、RB₁、RB₂……RB₁₅The third frequency domain resource includes RB₀、RB₁、RB₂、RB₃、RB₄And RB of the fifth frequency domain resource₂、RB₃、RB₆、RB₇、RB₈RBs respectively associated with third frequency domain resources₀、RB₁、RB₂、RB₃、RB₄Correspondingly (a0 ═ 2, a1 ═ 3, a2 ═ 6, A3 ═ 7, a4 ═ 8); wherein the RB of the fourth frequency domain resource₀、RB₁、RB₂、RB₃、RB₄RB with third frequency domain resource₀、RB₁、RB₂、RB₃、RB₄And correspond to each other. After the mapping is completed according to the mapping rule, the first frequency domain resource is an RB in the fifth frequency domain resource₇、RB₈RBs respectively corresponding to third frequency domain resources₃、RB₄And RBs corresponding to the second frequency domain resources₀、RB₁The SRS sent on the first frequency domain resource is the second frequency domain resource RB₀、RB₁The corresponding SRS. For the following fig. 6 to 8 and 9, the implementation thereof is similar, and the description of this embodiment is omitted. In this embodiment, each resource index takes 0 as a starting point, optionally, each resource index may also adopt 1 as a starting point, the starting point may be any integer, and the embodiment does not particularly limit the starting point corresponding to each resource index.

In one possible case, where N is M, each resource unit in the fourth frequency domain resource corresponds to each resource unit in the third frequency domain resource one to one.

This will be described in detail with reference to fig. 6 to 10. Each square grid represents a resource with the width of 4RB, the square grid with numbers is a second frequency domain resource and corresponds to a second SRS, the shaded square grid corresponds to a third frequency domain resource, the connecting lines among the resource units represent the corresponding relation, and the arrow line represents a first SRS sent on the mapped first frequency domain resource.

As shown in fig. 6, the second frequency domain resources (the full set of the fourth frequency domain resources) are equal in number to the first frequency domain resources (the full set of the third frequency domain resources), and the second frequency domain resources sequentially correspond to the first frequency domain resources according to the mapping rule. For example, after correspondence is determined, for example, 1 corresponds to the first shaded block (resource element No. 3), 2 corresponds to the second shaded block (resource element No. 4), and 3 corresponds to … … for the third shaded block (resource element No. 7), the second SRS carried on the second frequency domain resource is carried on the first frequency domain resource corresponding to the second frequency domain resource, and the first SRS transmitted on the first frequency domain resource is determined.

As shown in fig. 7, if the number of resource elements included in the configured second frequency domain resource (the total set of the fourth frequency domain resources) is greater than the number of resource elements included in the first frequency domain resource (the total set of the third frequency domain resources), the first SRS is transmitted only in part of the second SRS, for example, only in the resource elements at a low frequency. For example, as shown in fig. 7, the second frequency domain resource includes 6 resource units, the first frequency domain resource includes 5 resource units, the resource units included in the first frequency domain resource correspond to the resource units included in the second frequency domain resource in sequence, that is, all the 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 an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource, that is, an SRS corresponding to the first 5 resource units in the second frequency domain resource, where the SRS corresponding to the 6 th resource unit is discarded.

As shown in fig. 8, if the number of resource elements included in the configured second frequency domain resource (the full set of fourth frequency domain resource elements) is smaller than the number of resource elements included in the third frequency domain resource, the second SRS is transmitted only 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 units included in the third frequency domain resource correspond to the resource units included in the second frequency domain resource in sequence, the first 6 resource units in the third frequency domain resource correspond to the resource units included in the second frequency domain resource, the first frequency domain resource is the first 6 frequency domain units in the third frequency domain resource, and the first SRS is the SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource. In fig. 8, the SRS is not transmitted in the last resource element in the third frequency domain resource.

As shown in fig. 9, the second frequency domain resources are a subset of the fourth frequency domain resources, i.e. the last three resource units of the 6 resource units of the fourth frequency domain resources are the second frequency domain resources. The third frequency domain resource comprises 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 sequence, and the last two resource units in the third frequency domain resource have a corresponding relationship with the second frequency domain resource, that is, the last two frequency domain resources in the third frequency domain resource are the first frequency domain resources, and the first SRS is the SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

In this embodiment, if frequency hopping is considered, the network device may further send a frequency hopping rule to the terminal device, or predefine the frequency hopping rule, and the terminal device determines the first SRS to be sent on the first frequency domain resource according to the first indication information, the second indication information, the mapping rule, and the frequency hopping rule; the frequency hopping rule is used to indicate the second frequency domain resource corresponding to each hop, and the implementation manner of frequency hopping can be shown in fig. 10.

As shown in fig. 10, the SRS is transmitted with frequency hopping between times t and t +1 and between times t +1 and t +2, and at the time t as the initial time, the second indication information is used to determine that the first two resource units in the fourth frequency-domain resource at the time t are the second frequency-domain resource, the mapping rule is used to indicate that the last two resource units in the fourth frequency-domain resource at the time t +1 are the second frequency-domain resource and the middle two resource units in the fourth frequency-domain resource at the time t +2 are the second frequency-domain resource. The first indication information indicates the third frequency domain resource, i.e. the resource unit indicated by the shading in fig. 10.

At time t, time t +1, and time t +2, the mapping rules may all adopt the manners shown in fig. 6 to fig. 9, and the result obtained after mapping may be as shown in fig. 10, where partial shadows are digitally filled, 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 resource units included in the third frequency domain resource and resource units 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 a resource in the third frequency domain resource, which has 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 second frequency domain resource is the full set of the fourth frequency domain resource and the first frequency domain resource is the full set of the third frequency domain resource, the mapping rule is a rule corresponding to the resource units included in the first frequency domain resource and the resource units 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 absolute frequency domain, that is, two resource units have the same frequency, or have the same frequency offset with respect to the same frequency domain reference point; the same frequency domain position may also be the same relative frequency domain, where the same relative frequency domain means that two resource units have the same relative frequency offset or have the same frequency domain sequence number or index relative to the respective frequency domain reference point.

This will be described in detail with reference to fig. 11 to 16. Each square grid represents a resource with the width of 4RB, the square grid with numbers is a second frequency domain resource and corresponds to a second SRS, the shaded square grid corresponds to a third frequency domain resource, the connecting lines among the resource units represent the corresponding relation, and the arrow line represents a first SRS sent on the mapped first frequency domain resource.

As shown in fig. 11, the second frequency domain resource is a full set of the fourth frequency domain resource, the first frequency domain resource is a full set of the third frequency domain resource, and according to the mapping rule, resource units included in the first frequency domain resource correspond to resource units included in the second frequency domain resource and having the same frequency domain position as the first frequency domain resource. As can be seen from fig. 11, the resource elements numbered 3, 4, 7, 8, 9, and 14 in the second frequency domain resource have the same frequency domain positions as the resource elements in the first frequency domain resource 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 units with the

sequence numbers

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

As shown in fig. 12, the second frequency domain resource is a subset of the fourth frequency domain resource, and 4 resource units 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 units included in the third frequency domain resource correspond to the resource units included in the second frequency domain resource and having the same frequency domain position as the third frequency domain resource. As can be seen from fig. 12, the first two resource units in the resource units included in the second frequency domain resource have the same frequency domain positions as the resource units included in the third frequency domain resource in the absolute frequency domain. The first frequency domain resource is a resource in the third frequency domain resource, which 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, and the SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource is the first SRS.

As shown in fig. 13, the resource units of the third frequency domain resource and the resource units of the fourth frequency domain resource located on the same dotted line have the same absolute frequency domain position, but the embodiment of the present application is also applicable to a scenario where correspondence is performed through relative frequency domain positions, and at this time, frequency reference points of the third frequency domain resource and the fourth frequency domain resource are respectively shown as 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, or have the same frequency domain sequence number or index, and then have the same relative frequency domain position, with respect to the respective frequency reference points. As can be seen from fig. 13, the last two resource units in the third frequency domain resource have the same relative frequency domain positions as the first two resource units in the second frequency domain resource. The first frequency domain resource is a resource in the third frequency domain resource, which 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, and the SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource is the first SRS.

In this embodiment, if frequency hopping is considered, 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 determines the first SRS to be sent on the first frequency domain resource according to the first indication information, the second indication information, the mapping rule and the frequency hopping rule; and the frequency hopping rule is used for indicating the second frequency domain resource corresponding to each hop. The frequency hopping implementation can be seen in fig. 14 to 16.

As shown in fig. 14, the SRS is transmitted with frequency hopping between times t and t +1 and between times t +1 and t +2, and at the time t as the initial time, the second indication information is used to determine that the first four resource units in the fourth frequency-domain resource at the time t are the second frequency-domain resource, the mapping rule is used to indicate that the last four resource units in the fourth frequency-domain resource at the time t +1 are the second frequency-domain resource, and the 5 th to 8 th resource units in the fourth frequency-domain resource at the time t +2 are the second frequency-domain resource. The first indication information indicates the third frequency domain resource, i.e., the resource unit indicated by hatching in fig. 14.

At time t, time t +1, and time t +2, the mapping rules may all adopt the manners shown in fig. 11 to fig. 13, and the results obtained after mapping may be as shown in fig. 14, where partial shadows are digitally filled, the resource units that are digitally filled are the first frequency domain resources, the first frequency domain resources are the resources in the third frequency domain resources that have the correspondence with the second frequency domain resources, and the first SRS is the SRS corresponding to the second frequency domain resources corresponding to the first frequency domain resources.

As shown in fig. 15, unlike fig. 14, in frequency hopping, it may occur that all frequency domain resources for transmitting SRS do not belong to the third frequency domain resource in a certain hop. Without optimizing the hopping rule, a situation of "no SRS is transmitted at all in a certain hop" may occur. In FIG. 15, the second row in the figure (time t +1, n)_SRS K +1 hop, n_SRSFor frequency hopping counting) of the corresponding frequency hoppingIn the transmission, since the frequency domain resources corresponding to the SRS are all the resources in which the SRS cannot be transmitted, no SRS can be transmitted at any time.

In this case, it is actually a waste of "timing at which SRS can be transmitted". To solve this problem, in the case of frequency hopping, if the third frequency domain resource cannot transmit any second SRS during a certain frequency hopping transmission, the terminal device immediately makes the frequency hopping count n_SRS+1, calculating a first frequency domain resource for transmitting the SRS in the third frequency domain resource of the next hop until there is the first frequency domain resource available for transmitting at least a part of the SRS in the third frequency domain resource (i.e. if n corresponding to time t is present_SRSThe corresponding SRS exists a first frequency domain resource, but at n_SRS+1，……，n_SRSNo first frequency domain resource exists in the resource of the corresponding SRS in the + k-1 hop, and the resource is in the n_SRSIf there is a first frequency domain resource at + k, the terminal device will be in the state of n at time t +1_SRSAnd + k corresponding SRS is transmitted on the first frequency domain resource). As shown in FIG. 16, at time t +1, the hop count is n_SRSK +2 hops instead of n_SRSK +1 hops. In this embodiment, the invalid transmission time is removed, the time and resources for transmitting the SRS are saved, and the time for traversing the full bandwidth is reduced, so that the network device can more quickly obtain the channel quality of the terminal device in the full bandwidth.

In a specific implementation process, the specific mapping rule is not limited to the above-described mapping rule, and there may be other mapping rules, for example, each of the above-described mapping rules may be derived or transformed to obtain a new mapping rule, or the two mapping rules may be combined together to be derived or transformed to obtain a new mapping rule, and the specific implementation manner of the mapping rule is not particularly limited in this embodiment. Or, the terminal device and the network device may agree in advance at least two rules involved in the present invention, and the network device may notify the terminal device to use one of the rules for SRS transmission.

And the terminal equipment can obtain the first frequency domain resource and the first SRS sent on the first frequency domain resource according to the first indication information, the second indication information and the mapping rule. Those skilled in the art will appreciate that the first SRS is part or all of the second SRS. For example, when a first resource unit included in the first frequency domain resource and a second resource unit included in the second frequency domain resource have a corresponding relationship, the SRS transmitted on the first resource unit is the SRS corresponding to the second resource unit.

Further, the first SRS may be a partial or complete transformation based on the second SRS. For example, when a first resource unit included in the first frequency domain resource and a second resource unit included in the second frequency domain resource have a corresponding relationship, the SRS transmitted on the first resource unit is a transform of the SRS corresponding to the second resource unit, such as a conjugate transform, a reverse transform, and the like.

On the basis of the above embodiments, the embodiments of the present application are also applicable to the process of transmitting uplink data. For example, the present invention may also be used in Uplink data transmission, such as transmission of a Physical Uplink Shared Channel (PUSCH). At present, there are two types of frequency domain resource allocation for PUSCH, type 0 and type 1 respectively. The following are detailed below.

Type 0: and resource allocation indication in a Bitmap mode.

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

type 1: the resource indication value is a resource allocation indication in the form of RIV.

In the frequency domain resource allocation of type 1, the network device indicates the frequency domain resource allocated to the terminal by indicating the terminal device with one RIV value, the resource being a contiguous resource unit.

In the present application, the mapping rule described above may be used in resource allocation of type 0 or type 1. Wherein, for type 0, although it may indicate a discontinuous RBG, data transmission on the discrete spectrum may be adapted to some extent, it indicates that the granularity is the RBG, and the RBG granularity increases with increasing BWP bandwidth, and it is not necessarily able to exactly adapt the actually available RBs of the discrete spectrum. Therefore, the above-mentioned embodiment shown in fig. 4 can also be applied to the resource allocation of type 0 or type 1 in this embodiment to indicate the transmission resource of uplink data. The following is a detailed description of the embodiment shown in fig. 17 and 18.

As shown in fig. 17 and 18, the fourth frequency domain resources with filling colors are the second frequency domain resources, and the shaded ones are the third frequency domain resources. The mapping rule adopted in fig. 17 is a rule that resource units included in the third frequency domain resources correspond to resource units included in the fourth frequency domain resources in sequence, where the first frequency domain resources are frequency domain resources in the third frequency domain resources that have a corresponding relationship with the second frequency domain resources. The mapping rule adopted in fig. 18 is a rule corresponding to resource units included in the third frequency domain resources and resource units included in the second frequency domain resources and having the same frequency domain position as the third frequency domain resources, where the first frequency domain resources are resources in the third frequency domain resources that have a corresponding relationship with the second frequency domain resources. The first frequency domain resource is used for transmitting uplink data. Optionally, the data transmitted on the first frequency domain resource may be corresponding data on a corresponding second resource.

According to the embodiment of the application, on the basis of not damaging an uplink data sending mechanism, the terminal equipment is enabled to send the uplink data on the discontinuous or irregular first frequency domain resource, the network equipment can receive the uplink data sent by the terminal equipment, and the transmission performance of the system is improved.

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

a transmitting module 1902, configured to transmit 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, 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, the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used to indicate a correspondence relationship between the third frequency domain resource and the fourth frequency domain resource.

Optionally, the mapping rule is a rule that resource units included in the third frequency domain resource and resource units included in the fourth frequency domain resource correspond in sequence, where the first frequency domain resource is a frequency domain resource in the third frequency domain resource that has a correspondence 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.

Optionally, the mapping rule is a rule corresponding to resource units included in the third frequency domain resource and resource units included in the second frequency domain resource and having the same frequency domain position as the third frequency domain resource, where 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 an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

Optionally, the first indication information is a bitmap corresponding to a fifth frequency domain resource, and a bit in the bitmap is 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 resource indication information is used to indicate one resource unit or multiple consecutive resource units, and the third frequency domain resource includes the resource units indicated by the resource indication information.

Optionally, the processing module is specifically configured to: determining a first SRS sent on the first frequency domain resource according to the first indication information, the second indication information, the mapping rule and the frequency hopping rule; the frequency hopping rule is used for indicating a second frequency domain resource corresponding to each hop.

The terminal device provided in this embodiment may be configured to execute the method executed by the terminal device in each of the above embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

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

A sending module 2001, configured to send first indication information, second indication information, and a mapping rule to a terminal device, where the first 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 a correspondence between the first frequency domain resource and the second frequency domain resource;

a receiving module 2002 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: sending the first indication information, the second indication information, the mapping rule and the frequency hopping rule to terminal equipment; the frequency hopping rule is used for indicating a second frequency domain resource corresponding to each hop.

The network device provided in this embodiment may be configured to execute the method executed by the network device in each of the above embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

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. Wherein

A memory 2102 for storing computer-executable instructions;

a processor 2101 is used to execute the computer-executable instructions stored in the memory to implement the steps performed by the terminal device in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 2102 may be separate or integrated with the processor 2101.

When the memory 2102 is a device separate from the processor 2101, the terminal apparatus 210 may further include: a bus 2103 for connecting the memory 2102 and the processor 2101.

The terminal device 210 shown in fig. 21 may further include a communication section 2103 for transmitting the first SRS to the network device or receiving the 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 memory 2202. Wherein

A memory 2202 for storing computer execution instructions;

the processor 2201 is configured to execute the computer-executable instructions stored in the memory to implement the steps performed by the network device in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 2202 may be separate or integrated with the processor 2201.

When the memory 2202 is a separate device from 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 section 2203 for transmitting 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 (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

The memory may comprise 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, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed, the method implemented by the above terminal device is executed.

Embodiments of the present application further provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed, the method implemented by the network device is executed.

Embodiments of the present application further provide a computer program product, which includes computer program code, and when the computer program code runs on a computer, the computer is caused to execute the method implemented by the terminal device.

Embodiments of the present application also provide a computer program product, which includes computer program code, when the computer program code runs on a computer, the computer is caused to execute the method implemented by the network device.

The embodiment of the application provides a chip, which comprises a memory and a processor, wherein the memory is used for storing computer execution instructions, and the processor is used for calling and running the computer execution instructions from the memory, so that the chip executes the 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 computer execution instructions, and the processor is used to call and execute the computer execution instructions from the memory, so that the chip executes a method implemented by a network device.

The computer-readable storage medium may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in a terminal device or a network device.

Claims

1. A method for transmitting a reference signal, comprising:

the method comprises the steps that terminal equipment determines a first frequency domain resource and a first Sounding Reference Signal (SRS) sent on the first frequency domain resource according to first indication information, second indication information and a mapping rule, wherein the first indication information is used for determining the first frequency domain resource, the second indication information is used for determining a second SRS corresponding to a second frequency domain resource and the second frequency domain resource, and the mapping rule is used for determining the corresponding relation between the first frequency domain resource and the second frequency domain resource;

and the terminal equipment transmits the first SRS to network equipment on the first frequency domain resource.

2. The method of claim 1, wherein the first indication information is used for indicating a third frequency domain resource, the first frequency domain resource is a resource in the third frequency domain resource, the second indication information is used for determining a second frequency domain resource in a 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, and the mapping rule is used for indicating a corresponding relationship between the third frequency domain resource and the fourth frequency domain resource.

3. The method according to claim 2, wherein the mapping rule is a rule that resource units included in the third frequency domain resource correspond to resource units 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 correspondence 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.

4. The method of claim 2, wherein the mapping rule is a rule corresponding to resource units included in the third frequency domain resource and resource units 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 a resource in the third frequency domain resource that has 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.

5. The method according to any one of claims 2 to 4, wherein the first indication information is a bitmap corresponding to fifth frequency domain resources, and a bit in the bitmap is used to indicate a third frequency domain resource in the fifth frequency domain resources.

6. The method according to any of claims 2 to 4, wherein 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 the resource units indicated by the resource indication information.

7. The method according to any one of claims 1 to 6, wherein the determining, by the terminal device, the first Sounding Reference Signal (SRS) transmitted on the first frequency domain resource according to the first indication information, the second indication information and the mapping rule, comprises:

8. A method for transmitting a reference signal, comprising:

9. The method of claim 8, wherein the first indication information is used for indicating a third frequency domain resource, the first frequency domain resource is a resource in the third frequency domain resource, the second indication information is used for determining a second frequency domain resource in a 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, and the mapping rule is used for indicating a corresponding relationship between the third frequency domain resource and the fourth frequency domain resource.

10. The method according to claim 9, wherein the mapping rule is a rule that resource units included in the third frequency domain resource correspond to resource units 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 correspondence 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.

11. The method of claim 9, wherein the mapping rule is a rule corresponding to resource units included in the third frequency domain resource and resource units 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 a resource in the third frequency domain resource that has 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.

12. The method according to any one of claims 9 to 11, wherein the first indication information is a bitmap corresponding to fifth frequency domain resources, and a bit in the bitmap is used to indicate a third frequency domain resource in the fifth frequency domain resources.

13. The method according to any of claims 9 to 11, wherein 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 the resource units indicated by the resource indication information.

14. The method according to any one of claims 8 to 13, wherein the network device sends the first indication information, the second indication information and the mapping rule to the terminal device, and comprises:

15. A terminal device, comprising:

16. The terminal device according to claim 15, 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, 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, the third frequency domain resource is different from the fourth frequency domain resource, and the mapping rule is used to indicate a correspondence relationship between the third frequency domain resource and the fourth frequency domain resource.

17. The terminal device according to claim 16, wherein the mapping rule is a rule that resource units included in the third frequency domain resource correspond to resource units 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 correspondence 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.

18. The terminal device according to claim 16, wherein the mapping rule is a rule corresponding to resource units included in the third frequency domain resource and resource units 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 a resource in the third frequency domain resource that has 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.

19. The terminal device according to any one of claims 16 to 18, wherein the first indication information is a bitmap corresponding to fifth frequency domain resources, and a bit in the bitmap is used to indicate a third frequency domain resource in the fifth frequency domain resources.

20. The terminal device according to any one of claims 16 to 18, wherein 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 the resource units indicated by the resource indication information.

21. A network device, comprising:

22. The network device of claim 21, wherein the first indication information is used to indicate a third frequency domain resource, the first frequency domain resource is a resource of the third frequency domain resource, the second indication information is used to determine a second frequency domain resource of a 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, and the mapping rule is used to indicate a correspondence relationship between the third frequency domain resource and the fourth frequency domain resource.

23. The network device of claim 22, wherein the mapping rule is a rule that resource units included in the third frequency domain resource sequentially correspond to resource units included in the fourth frequency domain resource, wherein the first frequency domain resource is a frequency domain resource corresponding to the second frequency domain resource in the third frequency domain resource, and the first SRS is an SRS corresponding to the second frequency domain resource corresponding to the first frequency domain resource.

24. The network device of claim 22, wherein the mapping rule is a rule corresponding to resource units included in the third frequency domain resource and resource units 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 a resource in the third frequency domain resource that has 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.

25. The network device according to any one of claims 22 to 24, wherein the first indication information is a bitmap corresponding to fifth frequency domain resources, and a bit in the bitmap is used to indicate a third frequency domain resource in the fifth frequency domain resources.

26. The network device according to any of claims 22 to 24, wherein the first indication information comprises 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 comprises the resource units indicated by the resource indication information.

27. A terminal device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of any of claims 1-7.

28. A network device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of any of claims 8 to 14.

29. A computer-readable storage medium having computer-executable instructions stored therein which, when executed, implement the method of any one of claims 1 to 7 or the method of any one of claims 8 to 14.