CN114402677A

CN114402677A - Method and apparatus for transmitting reference signal

Info

Publication number: CN114402677A
Application number: CN201980100416.1A
Authority: CN
Inventors: 黄甦; 于莹洁; 王艺
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2022-04-26
Also published as: WO2021056227A1

Abstract

The application provides a method and a device for transmitting reference signals, wherein the method comprises the following steps: generating resource configuration information of a reference signal, wherein the frequency domain density of a reference signal resource indicated by the resource configuration information is 1; and sending the resource configuration information to the terminal equipment. By making the frequency domain density of the reference signal resources 1, it can support at most 12 cells to simultaneously transmit the reference signals, and compared with the prior art, the cell multiplexing capability can be effectively improved.

Description

Method and apparatus for transmitting reference signal

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting a reference signal.

Background

The downlink positioning method of the terminal equipment based on the cellular network comprises the steps that a serving cell and an adjacent cell send downlink reference signals to the terminal equipment, the terminal equipment receives the downlink reference signals sent by the serving cell and the adjacent cell and obtains measurement quantity by measuring the downlink reference signals, and a positioning server, the serving cell or the terminal equipment can determine the current position information of the terminal equipment based on the measurement quantity. For example, the downlink reference signal may be referred to as a Positioning Reference Signal (PRS).

In the downlink positioning method of the terminal device, the PRS measured by the terminal device may come from a distant cell, and in this case, the field strength of the PRS reaching the terminal device may be weak. In order to ensure the transmission reliability of PRS, it is proposed to use dedicated resources to transmit PRS. Further, in order to improve the resource utilization, the industry proposes that the PRS of each cell is frequency division multiplexed with the dedicated resource.

In the prior art, the cell multiplexing capability is low, for example, the prior art supports PRS frequency division multiplexing of at most 6 cells.

Disclosure of Invention

The application provides a method and a device for transmitting reference signals, which can improve the cell reuse capacity compared with the prior art.

In a first aspect, a method for transmitting reference signals is provided, the method comprising: generating resource configuration information of a reference signal, wherein the frequency domain density of a reference signal resource indicated by the resource configuration information is 1; and sending the resource configuration information to the terminal equipment.

The frequency domain density is 1, which means that the number of Resource Elements (REs) occupied by each port signal is 1 on average in 1 Resource Block (RB).

Alternatively, if the reference signal resource occupies a plurality of RBs, the frequency domain density of each RB is 1.

For a single-port signal, the frequency domain density is 1, which means that the number of RE occupied by the single-port signal is 1 within one RB. Wherein, the single-port signal represents a reference signal transmitted by using a single port.

The reference signal in this application may be a single port signal.

It should be understood that, when the reference signal is a single-port signal, configuring the reference signal resource by using the scheme provided in the present application may implement that the number of REs occupied by the reference signal of each cell in 1 RB is 1. Therefore, frequency division multiplexing can be performed on the reference signals of at most 12 cells, that is, the reference signals can be simultaneously transmitted by at most 12 cells.

Therefore, in the present application, by setting the frequency domain density of the reference signal to 1, the cell reuse capacity can be effectively improved compared to the prior art.

Alternatively, in a downlink positioning scenario, the reference signal herein may be a PRS.

Besides the positioning scenario, the present application may also be applied to other scenarios involving multiple cells transmitting reference signals to a terminal device in a frequency division multiplexing manner. The reference signal is given different names according to application scenarios.

The reference signal is described as PRS in the following.

Taking the reference signal as the PRS as an example, the method provided by the first aspect includes: generating resource configuration information of a PRS, wherein the frequency domain density of PRS resources indicated by the resource configuration information is 1; and sending the resource configuration information to the terminal equipment.

Therefore, in the present application, by setting the frequency domain density of the PRS to 1, at most 12 cells can be supported to simultaneously transmit the PRS, and the cell reuse capacity can be effectively improved compared with the prior art.

In the present application, on the premise that the frequency domain density is 1, a plurality of different PRS patterns (patterns) may be provided. In other words, in the present application, the PRS pattern is configurable.

With reference to the first aspect, in a possible implementation manner of the first aspect, the PRS resource maps an offset of an RE on an adjacent symbol in a slot to have an absolute value of 1 or 2.

In this implementation manner, optionally, the PRS resource includes a number of symbols greater than 6 and less than or equal to 12, and an absolute value of the offset is 1 or 2.

In this implementation manner, optionally, the PRS resource includes a number of symbols less than or equal to 6, and an absolute value of the offset is 2, where the slot includes 12 or 14 symbols.

With reference to the first aspect, in a possible implementation manner of the first aspect, the generating resource configuration information of the reference signal includes: acquiring a PRS pattern; generating resource configuration information of PRS based on the PRS pattern. Wherein the PRS pattern satisfies formula (1) or formula (2) in the following embodiments. Alternatively, the PRS pattern is obtained according to formula (1) or formula (2) in the following embodiment.

In the application, the PRS pattern is obtained based on the formula (1) or the formula (2), and in the process of configuring the PRS resource, the flexibly configurable offset of mapping REs between adjacent symbols is introduced, so that the flexible configuration of the PRS resource can be realized.

With reference to the first aspect, in a possible implementation manner of the first aspect, the PRS resource maps an offset of a resource element RE on adjacent symbols within a half slot, where the absolute value of the offset is 1.

Optionally, in this implementation, of the N symbols included in the reference signal resource, the last N/2 symbols have an offset of 6 REs with respect to the first N/2 symbols.

With reference to the first aspect, in a possible implementation manner of the first aspect, the generating resource configuration information of the reference signal includes: acquiring a PRS pattern; generating resource configuration information of PRS based on the PRS pattern. Wherein the PRS pattern satisfies formula (3), formula (4), or formula (5) in the following embodiments. Alternatively, the PRS pattern is obtained according to formula (3), formula (4), or formula (5) in the following embodiments.

By acquiring the PRS pattern according to the formula (3) or the formula (4), the REs mapped by the PRS resource in one slot have a half-slot reset attribute, so that the frequency division multiplexing of the PRS of the NR cell and the PRS of the LTE cell can be supported. In addition, by acquiring the PRS pattern according to formula (3) or formula (4), it is also possible to make the REs mapped by the PRS resource occupy all REs within one RB as much as possible.

The PRS herein may be two-port signals in addition to single-port signals.

For a two-port signal, the frequency domain density is 1, which means that within 1 RB, the two-port signal equivalently occupies 2 REs, and for example, the following two cases can be included.

In case 1, each port in the two-port signal occupies 2 REs, but the two ports occupy the same two REs and are distinguished by orthogonal codes or different sequences on the two REs.

Case 2: each port occupies the number of REs as 1, and the two ports occupy different REs.

With reference to the first aspect, in a possible implementation manner of the first aspect, the generating resource configuration information of the reference signal includes: acquiring a PRS pattern; generating resource configuration information of PRS based on the PRS pattern. Wherein the PRS pattern satisfies formula (6) or formula (7) in the following embodiments. Alternatively, the PRS pattern is obtained according to formula (6) or formula (7) in the following embodiment.

The PRS pattern is obtained through the formula (6) or the formula (7), so that the cell reuse capacity can be improved compared with the prior art, and the configuration of the two-port PRS can be supported.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: and sending the PRS to the terminal equipment based on the resource configuration information of the PRS.

The first aspect describes the scheme provided by the present application from the perspective of a network device, and the second aspect, which will be described below, describes the scheme provided by the present application from the perspective of a terminal device. It should be understood that the description of the second aspect corresponds to the description of the first aspect, and the explanation and beneficial effects of the related contents of the description of the second aspect can refer to the description of the first aspect, which is not repeated herein.

In a second aspect, a method for transmitting reference signals is provided, the method comprising: receiving resource configuration information of PRS from a network device, wherein the frequency domain density of PRS resources indicated by the resource configuration information is 1; and acquiring PRS resources according to the resource configuration information.

In the present application, on the premise that the frequency domain density is 1, there may be a plurality of different PRS patterns. In other words, in the present application, the PRS pattern is configurable.

With reference to the second aspect, in a possible implementation manner of the second aspect, the PRS resource maps an offset of a Resource Element (RE) on adjacent symbols in a slot, where the absolute value of the offset is 1 or 2.

In this implementation manner, optionally, the PRS pattern of the PRS resource satisfies formula (1) or formula (2) in the following embodiment.

With reference to the second aspect, in a possible implementation manner of the second aspect, the PRS resource maps an offset of a resource element RE on adjacent symbols within a half slot, where the absolute value of the offset is 1.

Optionally, in this implementation, the PRS pattern of the PRS resource satisfies formula (3), formula (4), or formula (5) in the following embodiments.

The PRS herein may be two-port signals in addition to single-port signals.

For a two-port signal, the frequency domain density is 1, which means that within 1 RB, the two-port signal equivalently occupies 2 REs, and for example, the following two cases can be included:

With reference to the second aspect, in a possible implementation manner of the second aspect, the PRS pattern of the PRS resource satisfies formula (6) or formula (7) in the following embodiments.

With reference to the second aspect, in a possible implementation manner of the second aspect, the method further includes: and receiving the PRS sent by the network equipment on the PRS resource.

In a third aspect, a communication device is provided, which may be configured to perform a method of the methods of the first or second aspects.

Optionally, the communication device may comprise means for performing a method of the methods of the first or second aspects.

In a fourth aspect, a communication device is provided, the communication device comprising a processor coupled with a memory, the memory for storing computer programs or instructions, the processor for executing the computer programs or instructions stored by the memory such that the method of the first aspect or the second aspect is performed.

For example, the processor is adapted to execute the memory-stored computer program or instructions to cause the communication device to perform the method of the first or second aspect.

Optionally, the communication device comprises one or more processors.

Optionally, a memory coupled to the processor may also be included in the communication device.

Optionally, the communication device may include one or more memories.

Alternatively, the memory may be integral with the processor or provided separately.

Optionally, a transceiver may also be included in the communication device.

In a fifth aspect, a chip is provided, where the chip includes a processing module and a communication interface, the processing module is configured to control the communication interface to communicate with the outside, and the processing module is further configured to implement the method in the first aspect or the second aspect.

A sixth aspect provides a computer readable storage medium having stored thereon a computer program (which may also be referred to as instructions or code) for implementing the method of the first or second aspect.

For example, the computer program, when executed by a computer, causes the computer to perform the method of the first aspect or the second aspect. The computer may be a communication device.

In a seventh aspect, a computer program product is provided, which comprises a computer program (also referred to as instructions or code), which when executed by a computer causes the computer to carry out the method of the first or second aspect. The computer may be a communication device.

In an eighth aspect, a communication system is provided, which includes the communication apparatus provided in the third aspect for executing the method provided in the first aspect, and the communication apparatus provided in the third aspect for executing the method provided in the second aspect.

The communication device provided by the third aspect for performing the method provided by the first aspect may be referred to as a network equipment or a cell base station. Alternatively, a cell base station may be equivalent to a cell. The communication apparatus provided in the third aspect for performing the method provided in the second aspect may be referred to as a terminal device.

Drawings

Fig. 1 is a schematic diagram of a downlink positioning scheme of a terminal device.

Fig. 2 and 3 are schematic diagrams of communication systems that may be suitable for use in the present application.

Fig. 4 is a schematic diagram of time-frequency resources.

Fig. 5 is a schematic flow chart diagram of a method for transmitting reference signals according to an embodiment of the present application.

Fig. 6 to 12 are schematic diagrams of PRS patterns in the embodiments of the present application, respectively.

Fig. 13 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 14 is another schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 15 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 16 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an application scenario of the present application. In fig. 1, 110 denotes a network device participating in downstream positioning of a terminal device, and 120 denotes a terminal device to be positioned. The plurality of network devices 110 transmit downlink reference signals to the terminal device 120, the terminal device 120 receives and measures the downlink reference signals transmitted by the plurality of network devices 110 to obtain a plurality of measurement quantities, and based on the plurality of measurement quantities and the positions of the plurality of network devices 110, the position of the terminal device 120 can be obtained. It should be understood that in the downlink positioning scheme of the terminal device, at least 3 network devices should participate in positioning. As an example, 3 network devices are shown in fig. 1 to participate in positioning, which is not limited in this application, and in practical applications, more network devices may participate in positioning.

The network devices 110 shown in fig. 1 may include network devices in a serving cell and network devices in a neighbor cell. The network device in the serving cell may be referred to as a serving base station, and the network device in the neighboring cell may be referred to as a neighboring base station.

Alternatively, the expression "network device" herein may be replaced by a "cell", which is the cell in which the network device is located.

For example, the downlink positioning scheme of the terminal device shown in fig. 1 may be described as that a serving cell and a neighboring cell send downlink reference signals to the terminal device, the terminal device receives the downlink reference signals sent by the serving cell and the neighboring cell and obtains a measurement amount by measuring the downlink reference signals, and a positioning server, the serving cell, or the terminal device may obtain current location information of the terminal device based on the measurement amount.

In the positioning scenario shown in fig. 1, the downlink reference signal may be referred to as a Positioning Reference Signal (PRS).

As described above, in the prior art, each cell transmits PRS to the terminal device by using dedicated resources in a frequency division multiplexing manner. However, the current technology cannot support more than 6 cells to simultaneously transmit PRS, resulting in low cell reuse capability.

In view of the above problems, the present application provides a PRS resource pattern with a frequency domain density of 1, which may enable a maximum of 12 cells to be multiplexed within 1 symbol, that is, 12 cells may be supported to simultaneously transmit PRS, and compared with the prior art, the cell multiplexing capability may be improved. Hereinafter, embodiments of the present application will be described.

The downlink positioning scenario shown in fig. 1 is one application scenario of the present application, but the present application is not limited to this. For example, the present application may also be applied to other scenarios involving frequency division multiplexing of multiple cells.

In the downlink positioning scenario shown in fig. 1, a downlink reference signal transmitted by a network device may be referred to as a Positioning Reference Signal (PRS). In other scenarios involving frequency division multiplexing multiple cells, the downlink reference signal sent by the network device may be given other names according to application requirements.

For convenience of description and not limitation, the following description takes the downlink reference signal as the PRS as an example.

Before describing the embodiments of the present application, a communication system that can be applied to the embodiments of the present application is described below with reference to fig. 2 and 3.

The embodiments of the present application may be applied to various communication systems, for example, a Long Term Evolution (LTE) system, a 5th Generation (5G) system, a machine to machine (M2M) system, or other communication systems of future evolution. The wireless air interface technology of 5G is called New Radio (NR), and the 5G system can also be called NR system.

Fig. 2 is a schematic diagram of a communication architecture that may be suitable for use in embodiments of the present application. The communication architecture includes a terminal device (denoted UE in fig. 2), a radio access network (NG-RAN) and a core network.

The core network includes access and mobility management functions (AMFs), Location Management Functions (LMFs), and other functions. The AMF realizes the functions of a gateway and the like, the LMF realizes the functions of a positioning center and the like, and the AMF is connected with the LMF through an NLs interface.

A radio access network (NG-RAN) includes one or more NG-enbs and a gNB. The ng-eNB denotes a Long Term Evolution (LTE) base station accessing the 5G core network, and the gNB denotes a 5G base station accessing the 5G core network. And the ng-eNB and the gNB, or the two ng-eNBs, or the two gNBs communicate through an Xn interface. The Xn interface may also be referred to as the XnAP interface.

The radio access network is connected to the core network via the AMF over the NG-C interface.

The terminal device is connected to the radio access network via the ng-eNB over the LTE-Uu interface. The terminal device may also be connected to the radio access network via the gNB over the NR-Uu interface.

The core network may communicate directly with the terminal device via LPP/NPP protocols.

It should be understood that one or more base stations (including ng-eNB and gNB) may be included in the communication architecture.

It will also be appreciated that one or more terminal devices may be included in the communications architecture, for example comprising one or more terminal device groups (e.g. UE sets as shown in figure 2).

One gNB may send data or control signaling to one or more terminal devices. Multiple gnbs may also transmit data or control signaling for one terminal device at the same time.

The ng-eNB in fig. 2 may also be replaced with a transmission node (TP), such as the TP shown in fig. 2.

Fig. 3 is a schematic diagram of another communication architecture that may be suitable for use with embodiments of the present application. Unlike the communication architecture shown in fig. 2, in the communication architecture shown in fig. 3, a Location Management Component (LMC) is added to the gNB, and the LMC may assume a part of functions of the LMF. If the part of the LMF function which can be assumed by the LMC is to be realized, the wireless access network does not need to introduce the 5G core network through the AMF. For example, when the communication architecture is used, the gbb does not need to report the measurement result reported by the terminal device to the core network, so that signaling overhead can be saved, and transmission delay can be reduced. For example, in the positioning scenario shown in fig. 1, positioning efficiency may be improved.

The description of the other parts shown in fig. 3 is the same as that of fig. 2, and will not be repeated.

As an example, in fig. 2 or fig. 3, the UE is a terminal device being located; the gNB or the eNB is a service base station or a neighbor base station; the LMF or LMC is a location server (or may be called as a location service center) and is configured to collect measurement information reported by the UE and location information of the base station, and further configured to perform location calculation according to the measurement information and the location of the base station to determine the location of the UE.

The network device in the embodiments of the present application may be configured to communicate with one or more terminals, and may also be configured to communicate with one or more base stations having partial terminal functions (for example, communication between a macro base station and a micro base station, such as an access point). The base station may be an evolved Node B (eNB) in an LTE system, or a base station (gNB) in a 5G system, an NR system. In addition, a base station may also be an Access Point (AP), a transport point (TRP), a Central Unit (CU), or other network entity, and may include some or all of the functions of the above network entities. For example, the network device in the embodiment of the present application may be a gNB or an eNB shown in fig. 2 or fig. 3, or may also be an LMF.

The terminal device referred to in the embodiments of the present application may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, etc.

In order to facilitate understanding of the embodiments of the present application, the following first introduces a concept of a Resource Element (RE), a subcarrier (subcarrier), a Resource Block (RB), a symbol (symbol), a slot (slot), a subframe, and a frame in conjunction with fig. 4.

A frame (frame) is a concept of time-frequency domain resources. The 1 frame includes a plurality of subframes (subframes) in a time domain. As shown in fig. 4, 1 frame includes 10 subframes.

A subframe includes 2 slots in the time domain. As shown in fig. 4, subframe #0 includes slot #0 and slot # 1.

A slot includes a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols (symbols) (referred to herein simply as symbols) in the time domain. For example, for a normal Cyclic Prefix (CP), 14 symbols are included in 1 slot, and for an extended CP, 12 symbols are included in 1 slot.

A slot includes a plurality of Resource Blocks (RBs) in a frequency domain.

The RB denotes a resource unit of a contiguous 12-subcarrier (subcarrier) width in the frequency domain. As indicated by the box labeled RB in fig. 4. An RB may also be a Physical Resource Block (PRB).

A Resource Element (RE) represents a resource unit of 1 subcarrier in a frequency domain and 1 symbol in a time domain. As indicated by the box labeled RE in fig. 4.

In the present application, the time domain length of the RB is not limited. In this application, the RB may be regarded as a concept on the frequency domain.

For example, the following can be expressed:

the 1 slot includes a plurality of RBs;

the 1 symbol includes a plurality of RBs;

the 1 RB includes 12 REs.

It can be understood that within 1 RB, subcarriers correspond one-to-one to REs.

Fig. 5 is a schematic flow chart of a method for transmitting a reference signal according to an embodiment of the present application. The method comprises the following steps.

S510, the network device generates resource configuration information of the PRS, and the frequency domain density of the PRS resource indicated by the resource configuration information is 1.

S520, the network equipment sends the resource configuration information of the PRS to the terminal equipment.

It should be understood that after receiving the resource configuration information of the PRS, the terminal device may acquire the PRS resource, and may further receive the PRS sent by the network device on the PRS resource.

The frequency domain density of 1 mentioned herein means that the number of REs occupied by the signal per port is 1 on average within 1 RB.

Alternatively, if the PRS occupies multiple RBs, the frequency-domain density of each RB is 1.

For example, for a single-port signal, the frequency domain density is 1, which means that the number of REs occupied by the single-port signal is 1 within one RB. Wherein, the single-port signal represents a reference signal transmitted by using a single port.

The PRS in this application may be single port signals.

For example, when the PRS is a single-port signal, the PRS resources are configured by using the scheme provided by the present application, and it can be achieved that the number of REs occupied by the PRS of each cell in 1 RB is 1. Therefore, the frequency division multiplexing of the PRSs of at most 12 cells can be supported, namely that at most 12 cells can be supported to simultaneously transmit the PRSs.

It should be understood that within 1 RB, each cell occupies 1 RE in a frequency division multiplexing manner, i.e., the RE occupied by different cells is different.

In this application, on the premise that the frequency domain density is 1, PRS resources indicated by resource configuration information of PRSs may have multiple PRS patterns (patterns).

In other words, the pattern of PRS resources in the present application is configurable, so that flexible configuration of PRS resources can be achieved.

A number of possible patterns of PRS resources will be described below. The PRS pattern mentioned hereinafter denotes a pattern of PRS resources.

An alternative PRS pattern.

Optionally, the PRS resource maps the absolute value of the offset O of the RE on adjacent symbols within the slot to be 1 or 2.

For example, the offset O may have different values in different situations as follows.

Case 1: the PRS resource maps the number of symbols in the time slot to be more than 6 and less than or equal to 12, and the absolute value of the offset O is 1 or 2.

Case 2: the PRS resource maps the number of symbols in the time slot to be less than or equal to 6, and the absolute value of the offset O is 2.

In case 1 and case 2 above, 1 slot includes 12 or 14 symbols. For example, for the normal CP, 14 symbols are included in 1 slot, and for the extended CP, 12 symbols are included in 1 slot.

It should be understood that, in practical applications, the value of the offset O of the PRS resource mapping the RE on the adjacent symbol in the timeslot may be determined as appropriate according to application requirements.

Optionally, the PRS pattern satisfies the following formula (1).

n＝0,1,2,...

l′＝0,1,2,...,N-1

Wherein the meaning of each variable or parameter in formula (1) is as follows.

Indicating a port of p, a parameter set of μ, and a modulation symbol on an RE with index (k, l).

p denotes a PRS port number.

μ denotes a subcarrier spacing. For example, μ ═ 1,2, and 3 correspond to subcarrier spacings of 15kHz, 30kHz, 60kHz, and 120kHz, respectively.

k denotes the frequency domain index of the RE. It should be understood that k indicates the number of subcarriers from the frequency point of the RE to a certain fixed frequency point.

l denotes a time domain index of the RE. It should be understood that l indicates the index of the symbol corresponding to the RE in one slot. For example, l ═ 0 indicates that the RE corresponds to the first symbol of the slot.

Representing a time slot n_s,fPRS sequence on inner symbol l.

n _s,fIndicating the slot index. It is to be understood that n_s,fIndicating the number of time slots that differ from the first time slot of the system frame in which the time slot is located. E.g. n_s,fIndicating that the slot is the first slot of the system frame as 0.

n denotes a PRS sequence index.

Indicates the number of REs within one RB. As can be understood in connection with FIG. 4, 12 REs are included within one RB, i.e.

N represents the number of symbols included in the PRS resource.

Indicating the initial frequency domain position of the PRS configuration, the corresponding PRS pattern is extended to the index within the RB of the occupied RE on the first symbol of the slot. For example,

can be any one of {0,1,2,3,4,5,6,7,8,9,10,11}。

O denotes an offset of the PRS resource to map REs on two adjacent symbols.

A symbol index in the slot that represents the first symbol of the PRS resource. For example

Indicating that the first symbol of the PRS resource is the first symbol of the slot. For example,

can get

Any one of them.

Indicating the number of symbols in a slot. In the case of the normal CP,

for the extended CP, the extended CP is,

l' denotes a symbol index of a symbol in the PRS resource within the PRS resource. For example, l ═ 0 indicates the first symbol of the PRS resource.

Where N represents the number of symbols included in the PRS resource. For example, N takes the value 12 or 6. For example, PRS resources occupy 12 or 6 consecutive symbols in 1 slot. It should be understood that in practical applications, the value of N may be determined according to application requirements.

Where O denotes an offset of the PRS resource mapping REs on two adjacent symbols. The value of O can be a negative integer or a positive integer.

Optionally, the values of (N, O) are shown in table 1.

TABLE 1

N	12	12	12	12	6	6
O	-1	1	-2	2	-2	2

As can be seen from table 1, (N, O) can have 6 different values. Wherein, when N is 12, O can be-1, -2 or 2. When N is 6, O may be 2 or-2.

From equation (1), the variables are known

The values of N and O may be based on formula (1) to obtain a PRS pattern. Wherein,

can get

Any one of the above-mentioned (a) and (b),

may be any one of {0,1,2,3,4,5,6,7,8,9,10,11 }. In the case where N is equal to 12, for a normal CP,

any one of {0,1,2} can be taken; for the extended CP, the extended CP is,

may take the value 0. In the case where N is equal to 6, for a normal CP,

any one of {0,1,2, …,8} may be taken; for the extended CP, the extended CP is,

any one of {0,1,2, …,6} may be taken.

As an example, it is known that,

(N，O)＝(12，-1)，

the PRS pattern obtained based on equation (1) is shown in fig. 6.

As another example, it is known that,

(N，O)＝(12，-2)，

the PRS pattern obtained based on equation (1) is shown in fig. 7.

As yet another example, it is known that,

(N，O)＝(6，-2)，

the PRS pattern obtained based on equation (1) is shown in fig. 8.

It should be understood that in the case where N takes a value of 12, the absolute value of the offset O is 1, so that PRS resources can be mapped to all REs in one RB.

It should also be understood that, in the case that the value of N is 6, the absolute value of the offset O is 2, so that PRS resources can be mapped to REs in one RB more uniformly.

It should also be understood that, in the case where N takes a value of 12, the absolute value of the offset O is 2, so that the PRS has a periodic pattern to some extent, which is helpful for the terminal device to estimate the frequency offset.

It should also be understood that table 1 is merely an example and not a limitation, and in practical applications, the value of (N, O) may be determined as appropriate according to application requirements.

In the above formula (1), variables

Meaning that the corresponding PRS pattern is extended to the index within the RB of the occupied RE on the first symbol of the slot.

Optionally, variables in equation (1)

The meaning of (2) can be replaced by the index of the occupied RE within the RB on the first symbol of the corresponding PRS resource, and accordingly, formula (1) is transformed into formula (2) as shown below.

n＝0,1,2,...

l′＝0,1,2,...,N-1

In the formula (2), except for the variables

The meaning of (2) varies, and the meaning of the remaining variables or parameters does not vary, as described above for the corresponding variables or parameters in formula (1). And are not described in detail herein.

Optionally, step S510 includes: acquiring a PRS pattern; and generating resource configuration information of the PRS according to the PRS pattern. For example, the PRS pattern satisfies the above equation (1) or equation (2).

Alternatively, in step S510, the PRS pattern is acquired according to the above formula (1) or formula (2).

It should be understood that by acquiring the PRS pattern based on formula (1) or formula (2), in the process of configuring the PRS resource, a flexibly configurable offset of mapping REs between adjacent symbols is introduced, so that flexible configuration of the PRS resource can be achieved.

Another alternative PRS pattern.

Optionally, the PRS resource maps the absolute value of the offset of the RE on adjacent symbols within a half slot to 1.

Optionally, in this embodiment, the PRS resources include N symbols, where the last N/2 symbols have an offset of 6 REs with respect to the first N/2 symbols.

If N is odd, the last f (N/2) symbols have an offset of 6 REs with respect to the first (N-f (N/2)) symbols. Wherein f (N/2) represents the remainder of (N/2), which can be either an upward remainder or a downward remainder.

Alternatively, the PRS pattern may satisfy the following formula (3).

n＝0,1,2,...

l′＝0,1,2,...,N-1

Wherein the meaning of each variable or parameter in formula (3) is as follows.

p denotes a PRS port number.

Representing a time slot n_s,fPRS sequence on inner symbol l.

n denotes a PRS sequence index.

N represents the number of symbols included in the PRS resource.

may be any one of {0,1,2,3,4,5,6,7,8,9,10,11 }.

O denotes an offset of the PRS resource to map REs on two adjacent symbols.

Indicating the number of symbols in a slot. For example, for a normal CP,

for the extended CP, the extended CP is,

can get

Any one of them.

Indicating the number of symbols in a slot. In the case of the normal CP,

for the extended CP, the extended CP is,

Indicating a rounding down.

Where N represents the number of symbols included in the PRS resource. Optionally, in formula (3), a value of N may be supported to include 12.

It should be understood that in practical applications, the value of N may be determined according to application requirements.

O denotes an offset of the PRS resource to map REs on two adjacent symbols. The value of O can be a negative integer or a positive integer.

Alternatively, in the formula (3), it may be supported that the absolute value of the offset O is 1.

For example, the values of (N, O) are shown in table 2.

TABLE 2

N	12
O	-1

In equation (3), the variable k is calculated as:

wherein,

may be referred to as a first offset amount,

may be referred to as a second offset.

Taking the value of 1 for N as 12 as an example, the first offset indicates that the last 6 symbols of the 12 symbols in the PRS resource have an offset of an additional 6 REs with respect to the first 6 symbols. For example, it can be understood that the first offset of the first 6 symbols is 0 and the first offset of the last 6 symbols is 6.

The second offset indicates that the offset at which the PRS resource maps REs on adjacent symbols is related only to the symbol index within half a slot.

From equation (3), the variables are known

And the values of N and O can be based on a formula (3) to obtain a PRS pattern. Wherein,

can get

Any one of the above-mentioned (a) and (b),

may be any one of {0,1,2,3,4,5,6,7,8,9,10,11 }.

In the case where N is equal to 12, for a normal CP,

any one of {0,1,2} can be taken; for the extended CP, the extended CP is,

may take the value 0.

As an example, it is known that,

(N，O)＝(12，-1)，

the PRS pattern obtained based on equation (3) is shown in fig. 9.

As another example, it is known that,

(N，O)＝(12，-1)，

PRS patterns obtained based on equation (3) asAs shown in fig. 10.

Referring to equation (3), and as can be seen from the PRS patterns shown in fig. 9 or fig. 10, the second offset is such that REs mapped by PRS resources within one slot have a half-slot reset property. I.e., the offset O at which the PRS resource maps REs on adjacent symbols is only related to the symbol index within half a slot. Therefore, the method and the device can support frequency division multiplexing of the PRS of the NR cell and the PRS of the LTE cell.

For example, under the condition that the NR cell and the LTE cell are deployed at the same frequency, the NR cell configures the PRS according to the embodiment of the present application, so that frequency division multiplexing of the PRS of the NR cell and the PRS of the LTE cell can be achieved.

Referring to equation (3), and the PRS patterns shown in fig. 9 or fig. 10, it can also be known that the first offset can make the REs mapped by the PRS resources occupy all the REs in one RB as much as possible on the basis that the REs mapped by the PRS resources in one slot have a half-slot reset property.

In the formula (3), variables

Optionally, the variables in equation (3)

The meaning of (3) can be replaced by the index of the occupied RE on the first symbol of the corresponding PRS resource within the RB, and accordingly, formula (3) is transformed into formula (4) as shown below.

n＝0,1,2,...

l′＝0,1,2,...,N-1

In the formula (4), except for the variables

The meaning of (c) is changed, and the meaning of the remaining variables or parameters is unchanged, as described above for the corresponding variables or parameters in equation (3). And are not described in detail herein.

Optionally, step S510 includes: acquiring a PRS pattern; and generating resource configuration information of the PRS according to the PRS pattern. For example, the PRS pattern satisfies formula (3) or formula (4).

Alternatively, in step S510, the PRS pattern is acquired according to formula (3) or formula (4).

Alternatively, the PRS pattern may satisfy the following formula (5).

n＝0,1,2,...

l′＝0,1,2,...,N-1

With respect to equation (3), only the second offset is considered in calculating the variable k in equation (5)

Without taking into account the first offset

The meaning of each variable or parameter in equation (5) is the same as that in equation (3), and is not described herein.

Optionally, step S510 includes: acquiring a PRS pattern; and generating resource configuration information of the PRS according to the PRS pattern, wherein the PRS pattern satisfies formula (5).

Optionally, in step S510, a PRS pattern is acquired according to equation (5).

In the above embodiments, the PRS is taken as an example of a single port signal to describe a method for configuring the PRS. It should be noted that the method for configuring PRS provided by the present application can also be applied to the configuration of two-port PRS.

Alternatively, the two-port PRS pattern may satisfy the following equation (6).

m′＝nα+k′

n＝0,1,2,...

l′＝0,1,2,...,N-1

k′＝0,...,X-1

Wherein the meaning of each variable or parameter in the formula (6) is as follows.

p denotes a PRS port number.

Represents a length 2 sequence. Assume PRS port number p₀5000 and p₀+1 ═ 5001, then

When PRS is single-port signal, port number is p₀When PRS is two-port signal, port number is p₀,p ₀+1。

Representing a time slot n_s,fPRS sequence on inner symbol l.

m' denotes a PRS sequence index.

n denotes an RB index of the PRS resource map.

Alpha is an intermediate variable and is related to the number of PRS ports. When the number of PRS ports is 1, α is 1, and when the number of PRS ports is 2, α is 2.

X denotes the number of ports of the PRS resource. X-1 denotes PRS as a single port signal, and X-2 denotes PRS as a two port signal.

k' represents an index within a frequency domain Orthogonal Cover Code (OCC) code, and takes 0 when the PRS port number is 1 and takes 0 and 1 when the PRS port number is 2.

Indicates the number of REs within one RB. As can be understood in conjunction with FIG. 4, 12 RBs are included in a RBRE, i.e.

N represents the number of symbols included in the PRS resource.

Indicating the initial frequency domain position of the PRS configuration, the corresponding PRS pattern is extended to the index within the RB of the occupied RE on the first symbol of the slot.

O denotes an offset of the PRS resource to map REs on two adjacent symbols.

can get

Any one of them.

Indicating the number of symbols in a slot. In the case of the normal CP,

for the extended CP, the extended CP is,

Alternatively, the two-port PRS pattern may satisfy the following equation (7).

m′＝nα+k′+q

q＝0,...,ρ-1

n＝0,1,2,...

l′＝0,1,2,...,N-1

k′＝0,...,X-1

Wherein the meaning of each variable or parameter in formula (7) is as follows.

p denotes a PRS port number.

Representing a time slot n_s,fPRS sequence on inner symbol l.

m' denotes a PRS sequence index.

n denotes an RB index of the PRS resource map.

ρ represents the frequency-domain density of PRS resources. And when the value of rho is 1, the frequency domain density of the PRS resource corresponding to the PRS pattern obtained according to the formula (7) is 1. It should be understood that when ρ is 2, the frequency-domain density of PRS resources corresponding to the PRS pattern obtained according to equation (7) is 2.

q denotes an RE index within one RB. As can be seen from equation (7), when ρ ═ 1, the value of q is 0, and when ρ >1, the value of q includes 0, 1.

N represents the number of symbols included in the PRS resource.

O denotes an offset of the PRS resource to map REs on two adjacent symbols.

can get

Any one of them.

Indicating the number of symbols in a slot. In the case of the normal CP,

for the extended CP, the extended CP is,

Indicating a rounding down.

Where N represents the number of symbols included in the PRS resource. For example, in the formula (6) and the formula (7), it can be known that the values of N supported include 12 and 6. For example, PRS resources occupy 12 consecutive or 6 consecutive symbols within 1 slot.

It should be understood that, in practical applications, the value of N may also be determined according to application requirements.

And O represents the offset of the PRS resource on the mapping of two adjacent symbols to the RE, and the value of O can be a negative integer or a positive integer. For example, in equations (6) and (7), the values of O that can be supported include-1, 1, -2, 2.

Optionally, the values of (N, O) are shown in table 3.

TABLE 3

It can be seen that the values of (N, O) in the case where the PRS is a single-port signal shown in table 3 are the same as the values of (N, O) shown in table 1.

It should be understood that equations (6) and (7) can be applied to the case where the PRS is a single port signal and also to the case where the PRS is a two port signal.

In the case where PRS is a two-port signal (i.e., X ═ 2), when (N, O) ═ 12, -2,

any one of {0,2,4,6,8,10} may be taken. In the case where N is equal to 12, for a normal CP,

the value of (a) can be any one of {0,1,2 }; for the extended CP, the extended CP is,

may take the value 0. In the case where N is equal to 6, for a normal CP,

can be any one of {0,1, …,8 }; for the extended CP, the extended CP is,

may be any one of {0,1, …,6 }.

As an example, it is known that X ═ 2, (N, O) ═ 12, -2,

the PRS pattern obtained based on formula (6) or formula (7) is shown in fig. 11.

As an example, it is known that X ═ 2, (N, O ═ 6, -2),

the PRS pattern obtained based on formula (6) or formula (7) is shown in fig. 12.

Optionally, in step S510, a PRS pattern is acquired; and generating resource configuration information of the PRS according to the PRS pattern. Wherein the PRS pattern satisfies formula (6) or formula (7).

Alternatively, in step S510, the PRS pattern is acquired according to formula (6) or formula (7).

As can be seen from the description of the above embodiment, in step S510, a PRS pattern may be acquired based on any one of formula (1) to formula (7); and generating resource configuration information of the PRS according to the PRS pattern.

It should be understood that the above equations (1) to (7) are merely examples and not limitations, and in practical applications, other feasible equations may also be adopted to obtain the PRS patterns.

It should be understood that in the present application, the PRS pattern is configurable, and thus flexible configuration of PRS may be achieved.

Optionally, the method in the embodiment shown in fig. 5 further includes: and the network equipment sends the PRS to the terminal equipment based on the resource configuration information of the PRS. I.e., PRS is transmitted on PRS resources indicated by the resource configuration information.

On the terminal equipment side, after receiving the resource configuration information of the PRS, the PRS resource can be obtained by analyzing, and then the PRS sent by the network equipment is received on the PRS resource.

Based on the description of the above embodiments, it can be known that, by setting the frequency domain density of the PRS to 1, the method can support at most 12 cells to simultaneously transmit the PRS, and can effectively improve the cell reuse capability compared with the prior art.

It should also be understood that if more than 12 cells need to transmit PRS, in this case, interference of PRS in the middle of different cells can be avoided by muting (muting). For example, when the REs occupied by the PRSs of two or more cells are the same, muting patterns are configured for the PRSs of these cells. The muting pattern can ensure that only one cell transmits the PRS at the same time.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.

It is to be understood that the method and operations implemented by the terminal device in the foregoing method embodiments may also be implemented by a component (e.g., a chip or a circuit) available to the terminal device, and the method and operations implemented by the network device in the foregoing method embodiments may also be implemented by a component (e.g., a chip or a circuit) available to the network device.

Embodiments of the methods provided herein are described above, and embodiments of the apparatus provided herein are described below. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, for brevity, details are not repeated here, since the details that are not described in detail may be referred to the above method embodiments.

The above mainly describes the scheme provided in the embodiment of the present application from the perspective of interaction between network elements. It is understood that each network element, for example, the transmitting end device or the receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to implement the above functions. Those of skill in the art would appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, according to the above method example, functional modules may be divided for a transmitting end device or a receiving end device, for example, each functional module may be divided for each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present application is schematic, and is only one logical function division, and other feasible division manners may be available in actual implementation. The following description will be given taking the example of dividing each functional module corresponding to each function.

Fig. 13 is a schematic block diagram of a communication device 1300 according to an embodiment of the present application. The communication device 1300 includes a transceiving unit 1310 and a processing unit 1320. The transceiving unit 1310 may communicate with the outside, and the processing unit 1310 is used for data processing. The transceiving unit 1310 may also be referred to as a communication interface or a communication unit.

The communication apparatus 1300 may be configured to perform the actions performed by the terminal device in the foregoing method embodiments, in this case, the communication apparatus 1300 may be referred to as a terminal device, the transceiving unit 1310 is configured to perform transceiving related operations on the terminal device side in the foregoing method embodiments, and the processing unit 1320 is configured to perform processing related operations on the terminal device side in the foregoing method embodiments.

Alternatively, the communication apparatus 1300 may be configured to perform the actions performed by the network device in the foregoing method embodiments, in this case, the communication apparatus 1300 may be referred to as a network device, the transceiving unit 1310 is configured to perform transceiving-related operations on the network device side in the foregoing method embodiments, and the processing unit 1320 is configured to perform processing-related operations on the network device side in the foregoing method embodiments.

As a design, the communications apparatus 1300 is configured to perform the actions performed by the network device in the foregoing method embodiment, and the processing unit 1320 is configured to generate resource configuration information of the reference signal, where a frequency-domain density of reference signal resources indicated by the resource configuration information is 1; a transceiving unit 1310 configured to send resource configuration information to a terminal device.

Optionally, the reference signal resource maps the absolute value of the offset of the RE on adjacent symbols within the slot to be 1 or 2.

Optionally, the reference signal resource includes a number of symbols greater than 6 and less than or equal to 12, and an absolute value of an offset is 1 or 2; or the reference signal resource comprises a number of symbols less than or equal to 6 and an offset of 2 in absolute value, wherein the slot comprises 12 or 14 symbols.

Alternatively, the reference signal resource maps the absolute value of the offset of the resource element RE on adjacent symbols within a half slot to 1.

Optionally, among the N symbols included in the reference signal resource, the last N/2 symbols have an offset of 6 REs with respect to the first N/2 symbols.

Optionally, the reference signal is a two-port signal.

Optionally, the processing unit 1320 is configured to: acquiring a resource pattern of a reference signal, wherein the resource pattern of the reference signal is configurable; and generating resource configuration information of the reference signal according to the resource pattern of the reference signal.

Alternatively, the reference signal is a PRS, and the PRS pattern satisfies any one of the formulas (1) to (7) described above.

Optionally, the reference signal is a PRS, and the processing unit 1320 is configured to obtain a resource pattern of the reference signal according to any one of the foregoing formulas (1) to (7).

The processing unit 1320 in the above embodiments may be implemented by a processor or a processor-related circuit. The transceiving unit 1310 may be implemented by a transceiver or transceiver-related circuitry. The transceiving unit 1310 may also be referred to as a communication unit or a communication interface.

As shown in fig. 14, an embodiment of the present application further provides a communication apparatus 1400. The communication apparatus 1400 comprises a processor 1410, the processor 1410 is coupled to a memory 1420, the memory 1420 is configured to store computer programs or instructions, and the processor 1410 is configured to execute the computer programs or instructions stored by the memory 1420, such that the methods in the above method embodiments are performed.

Optionally, as shown in fig. 14, the communication device 1400 may further include a memory 1420.

Optionally, as shown in fig. 14, the communication device 1400 may further include a transceiver 1430, and the transceiver 1430 is used for receiving and/or transmitting signals. For example, processor 1410 may be configured to control transceiver 1430 for receiving and/or transmitting signals.

As a scheme, the communication apparatus 1400 is configured to implement the operations performed by the terminal device in the above method embodiments.

For example, the processor 1410 is configured to implement processing-related operations performed by the terminal device in the above method embodiments, and the transceiver 1430 is configured to implement transceiving-related operations performed by the terminal device in the above method embodiments.

Alternatively, the communication apparatus 1400 is configured to implement the operations performed by the network device in the above method embodiments.

For example, the processor 1410 is configured to implement processing-related operations performed by the network device in the above method embodiments, and the transceiver 1430 is configured to implement transceiving-related operations performed by the network device in the above method embodiments.

The embodiment of the present application further provides a communication apparatus 1500, where the communication apparatus 1500 may be a terminal device or a chip. The communication apparatus 1500 may be configured to perform the operations performed by the terminal device in the above method embodiments.

When the communication apparatus 1500 is a terminal device, fig. 15 shows a simplified structure diagram of the terminal device. For easy understanding and illustration, in fig. 15, the terminal device is exemplified by a mobile phone. As shown in fig. 15, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 15, and in an actual end device article, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device.

As shown in fig. 15, the terminal device includes a transceiving unit 1510 and a processing unit 1520. The transceiving unit 1510 may also be referred to as a transceiver, a transceiving means, and the like. The processing unit 1520 may also be referred to as a processor, a processing board, a processing module, a processing device, or the like.

Alternatively, a device for implementing a receiving function in the transceiving unit 1510 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 1510 may be regarded as a transmitting unit, that is, the transceiving unit 1510 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

For example, in one implementation, the transceiving unit 1510 is configured to perform the receiving operation in step S520 in fig. 5, and/or the transceiving unit 1510 is further configured to perform other transceiving-related steps performed by the terminal device. For example, the transceiving unit 1510 is further configured to receive a reference signal (e.g., PRS) issued by the network device based on the resource configuration information of the reference signal. The processing unit 1520 is configured to perform other processing related steps performed by the terminal device in this embodiment of the application, for example, the processing unit 1520 is configured to parse the resource configuration information of the reference signal received by the transceiver 1510, so as to obtain the reference signal resource.

It should be understood that fig. 15 is only an example and not a limitation, and the terminal device including the transceiving unit and the processing unit described above may not depend on the structure shown in fig. 15.

When the communication device 1500 is a chip, the chip includes a transceiver unit and a processing unit. The transceiving unit can be an input/output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

The embodiment of the present application further provides a communication apparatus 1600, where the communication apparatus 1600 may be a network device or a chip. The communication apparatus 1600 may be used for performing the operations performed by the network device in the above method embodiments.

When the communication device 1600 is a network device, it is a base station, for example. Fig. 16 shows a simplified base station structure. The base station includes 1610 portions and 1620 portions. The 1610 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 1620 is mainly used for baseband processing, control of a base station, and the like. Portion 1610 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Part 1620 is generally a control center of the base station, and may be generally referred to as a processing unit, configured to control the base station to perform the processing operation on the network device side in the foregoing method embodiment.

The transceiver unit of portion 1610, which may also be referred to as a transceiver or transceiver, includes an antenna and radio frequency circuitry, wherein the radio frequency circuitry is primarily used for radio frequency processing. Alternatively, the device for implementing the receiving function in the portion 1610 may be regarded as a receiving unit, and the device for implementing the transmitting function may be regarded as a transmitting unit, that is, the portion 1610 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Portion 1620 may comprise one or more boards, each of which may comprise one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control of the base station. If a plurality of single boards exist, the single boards can be interconnected to enhance the processing capacity. As an alternative implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one implementation, the transceiver unit of portion 1610 is configured to perform the transmitting operation in step S520 in fig. 5, and/or the transceiver unit of portion 1610 is further configured to perform other transceiving-related steps performed by the network device in the embodiment of the present application, for example, portion 1610 is further configured to transmit the reference small to the terminal device based on the resource configuration information of the reference signal. Part 1620 is configured to perform step S510 in fig. 5, and/or part 1620 is further configured to perform steps related to processing performed by a network device in this embodiment of the present application.

It should be understood that fig. 16 is merely an example and not a limitation, and the network device including the transceiving unit and the processing unit described above may not depend on the structure shown in fig. 16.

When the communication device 1600 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.

An embodiment of the present application further provides a communication system, including the network device and the terminal device in the foregoing embodiments.

Embodiments of the present application also provide a computer-readable storage medium, on which computer instructions for implementing the method performed by the terminal device or the method performed by the network device in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the terminal device or the method performed by the network device in the above-described method embodiments.

Embodiments of the present application also provide a computer program product containing instructions, where the instructions, when executed by a computer, cause the computer to implement the method performed by the terminal device or the method performed by the network device in the foregoing method embodiments.

For the explanation and beneficial effects of the related content in any of the communication apparatuses provided above, reference may be made to the corresponding method embodiments provided above, and details are not repeated here.

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer may include hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer may include applications such as a browser, an address book, word processing software, and instant messaging software.

The embodiment of the present application does not particularly limit a specific structure of an execution subject of the method provided by the embodiment of the present application, as long as communication can be performed by the method provided by the embodiment of the present application by running a program in which codes of the method provided by the embodiment of the present application are recorded. For example, an execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling a program and executing the program in the terminal device or the network device.

Various aspects or features of the disclosure may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic memory devices (e.g., hard disk, floppy disk, magnetic tape, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.).

Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to: wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be understood that the processor mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM). For example, RAM can be used as external cache memory. By way of example and not limitation, RAM may include the following forms: static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) may be integrated into the processor.

It should also be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

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

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

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. Furthermore, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, or portions thereof, may be embodied in the form of a computer software product stored in a storage medium, the computer software product including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage media may include, but are not limited to: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for transmitting reference signals, comprising:

generating resource configuration information of a reference signal, wherein the frequency domain density of a reference signal resource indicated by the resource configuration information is 1;

and sending the resource configuration information to the terminal equipment.
The method of claim 1, wherein the reference signal resource maps an offset of Resource Elements (REs) on adjacent symbols within a slot to an absolute value of 1 or 2.
The method of claim 2, wherein the reference signal resource comprises a number of symbols greater than 6 and less than or equal to 12, and wherein an absolute value of the offset is 1 or 2; or

The reference signal resource includes a number of symbols less than or equal to 6, the absolute value of the offset is 2,

wherein the slot comprises 12 or 14 symbols.
The method of claim 1, wherein the reference signal resource maps an absolute value of an offset of Resource Elements (REs) to 1 on adjacent symbols within a half slot.
The method of claim 4, wherein the reference signal resource comprises N symbols, and wherein the last N/2 symbols have an offset of 6 REs relative to the first N/2 symbols.
The method according to any one of claims 1 to 5, wherein the reference signal is a two-port signal.
The method according to any one of claims 1 to 6, wherein the generating resource configuration information of the reference signal comprises:

obtaining a resource pattern of the reference signal, the resource pattern of the reference signal being configurable;

and generating resource configuration information of the reference signal according to the resource pattern of the reference signal.
The method of claim 7, wherein the reference signal is a Positioning Reference Signal (PRS);

wherein the resource pattern of the reference signal satisfies formula one or formula two:

the formula I is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

the formula II is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

wherein the meaning of each variable or parameter in the formula is as follows:

indicating that a port is p, a parameter set is μ, and a modulation symbol on an RE with index (k, l);

p represents a PRS port number;

μ denotes a subcarrier spacing;

k represents a frequency domain index of the RE;

l represents a time domain index of the RE;

representing a time slot n_s,fPRS sequence on inner symbol l;

n _s,findicating a slot index;

n represents a PRS sequence index;

represents the number of REs within one resource block RB;

n represents the number of symbols included in the PRS resource;

an index within the RB of REs occupied on the first symbol indicating the extension of the PRS pattern to the slot;

o represents the offset of the PRS resource mapping RE on two adjacent symbols;

a symbol index in the slot representing a first symbol of the PRS resource;

l' represents a symbol index of a symbol in the PRS resource within the PRS resource;

representing the number of symbols in a time slot;

indicating a rounding down.
The method of claim 7, wherein the reference signal is a Positioning Reference Signal (PRS); wherein the resource pattern of the reference signal satisfies a formula three or a formula four:

the formula III is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

the formula four is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

wherein the meaning of each variable or parameter in the formula is as follows:

indicating that a port is p, a parameter set is μ, and a modulation symbol on an RE with index (k, l);

p represents a PRS port number;

μ denotes a subcarrier spacing;

k represents a frequency domain index of the RE;

l represents a time domain index of the RE;

representing a time slot n_s，fPRS sequence on inner symbol l;

n _s,findicating a slot index;

n represents a PRS sequence index;

represents the number of REs within one RB;

n represents the number of symbols included in the PRS resource;

an index within the RB of an RE occupied on a first symbol representing a PRS resource;

o represents the offset of the PRS resource mapping RE on two adjacent symbols;

a symbol index in the slot representing a first symbol of the PRS resource;

l' represents a symbol index of a symbol in the PRS resource within the PRS resource;

representing the number of symbols in a time slot;

indicating a rounding down.
An apparatus for configuring a reference signal, comprising:

the processing unit is used for generating resource configuration information of a reference signal, and the frequency domain density of a reference signal resource indicated by the resource configuration information is 1;

and the transceiving unit is used for sending the resource configuration information to the terminal equipment.
The apparatus of claim 10, wherein the reference signal resource maps an absolute value of an offset of Resource Elements (REs) to 1 or 2 on adjacent symbols within a slot.
The apparatus of claim 11, wherein the reference signal resource comprises a number of symbols greater than 6 and less than or equal to 12, and wherein an absolute value of the offset is 1 or 2; or

The reference signal resource includes a number of symbols less than or equal to 6, the absolute value of the offset is 2,

wherein the slot comprises 12 or 14 symbols.
The apparatus of claim 10, wherein the reference signal resource maps an absolute value of an offset of Resource Elements (REs) to 1 on adjacent symbols within a half slot.
The apparatus of claim 13, wherein the reference signal resource comprises N symbols, wherein the last N/2 symbols have an offset of 6 REs relative to the first N/2 symbols.
The apparatus according to any one of claims 10 to 14, wherein the reference signal is a two-port signal.
The apparatus according to any one of claims 10 to 15, wherein the processing unit is configured to:

obtaining a resource pattern of the reference signal, the resource pattern of the reference signal being configurable;

and generating resource configuration information of the reference signal according to the resource pattern of the reference signal.
The apparatus of claim 16, wherein the reference signal is a Positioning Reference Signal (PRS);

wherein the resource pattern of the reference signal satisfies formula one or formula two:

the formula I is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

the formula II is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

wherein the meaning of each variable or parameter in the formula is as follows:

indicating that a port is p, a parameter set is μ, and a modulation symbol on an RE with index (k, l);

p represents a PRS port number;

μ denotes a subcarrier spacing;

k represents a frequency domain index of the RE;

l represents a time domain index of the RE;

representing a time slot n_s,fPRS sequence on inner symbol l;

n _s,findicating a slot index;

n represents a PRS sequence index;

represents the number of REs within one resource block RB;

n represents the number of symbols included in the PRS resource;

an index within the RB of REs occupied on the first symbol indicating the extension of the PRS pattern to the slot;

o represents the offset of the PRS resource mapping RE on two adjacent symbols;

a symbol index in the slot representing a first symbol of the PRS resource;

l' represents a symbol index of a symbol in the PRS resource within the PRS resource;

representing the number of symbols in a time slot;

indicating a rounding down.
The apparatus of claim 16, wherein the reference signal is a Positioning Reference Signal (PRS); wherein the resource pattern of the reference signal satisfies a formula three or a formula four:

the formula III is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

the formula four is as follows:

n＝0,1,2,...

l′＝0,1,2,...,N-1

wherein the meaning of each variable or parameter in the formula is as follows:

indicating that a port is p, a parameter set is μ, and a modulation symbol on an RE with index (k, l);

p represents a PRS port number;

μ denotes a subcarrier spacing;

k represents a frequency domain index of the RE;

l represents a time domain index of the RE;

representing a time slot n _s,fPRS sequence on inner symbol l;

n _s,findicating a slot index;

n represents a PRS sequence index;

represents the number of REs within one RB;

n represents the number of symbols included in the PRS resource;

an index within the RB of an RE occupied on a first symbol representing a PRS resource;

o represents the offset of the PRS resource mapping RE on two adjacent symbols;

a symbol index in the slot representing a first symbol of the PRS resource;

l' represents a symbol index of a symbol in the PRS resource within the PRS resource;

representing the number of symbols in a time slot;

indicating a rounding down.
A communications apparatus comprising a processor coupled to a memory, the memory for storing a computer program or instructions, the processor for executing the computer program or instructions in the memory such that the method of any of claims 1 to 9 is performed.
The communications device of claim 19, further comprising the memory.
A computer-readable storage medium characterized by storing a program or instructions for implementing the method of any one of claims 1 to 9.
A computer program product, comprising a computer program which, when executed by a computer, causes the method of any one of claims 1 to 9 to be performed.