CN108713299B

CN108713299B - Uplink resource allocation and signal modulation method and device

Info

Publication number: CN108713299B
Application number: CN201680082896.XA
Authority: CN
Inventors: 孙彦良; 刘斌; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-04-29
Filing date: 2016-05-10
Publication date: 2020-07-24
Anticipated expiration: 2036-05-10
Also published as: WO2017185406A1; CN108713299A

Abstract

The embodiment of the invention provides an uplink resource allocation and signal modulation method and a device, wherein the method comprises the steps of: UE obtains reference signal transmission resource granularity delta_RSAnd scheduling bandwidth

According to Δ_RSAnd

determining reference signal transmission resources and first signal transmission resources on a symbol comprising the reference signal transmission resources within a transmission time interval, TTI, the reference signal transmission resources and the first signal transmission resources being frequency division multiplexed. The UE transmits a reference signal and a first signal on symbols containing reference signal transmission resources. The method can realize flexible scheduling and allocation of the reference signal transmission resource and the first signal transmission resource in the short TTI without additional signaling overhead.

Description

Uplink resource allocation and signal modulation method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for uplink resource allocation and signal modulation.

Background

In a long Term Evolution (L ong Term Evolution, abbreviated as L TE) system, Transmission of uplink traffic is scheduled based on a base station, a basic time unit of the scheduling is one subframe (subframe), and one subframe includes 14 time domain symbols (one subframe is equal to two slots (slots)), in the L TE and L TE-a standards, a Transmission Time Interval (TTI) is equal to the size of one subframe, that is, one TTI is 14 time domain symbols.

In the prior art, for data transmission of a short TTI, uplink resources are allocated by dividing an uplink TTI into a reference signal transmission symbol and a data signal or control signal transmission symbol set, where the reference signal transmission symbol is used to transmit a reference signal for channel estimation and channel measurement known by a receiving end, and the data signal or control signal transmission symbol set is used to transmit data of a User Equipment (UE), where the reference signal transmission symbol is a symbol (e.g., the 4 th or 11 th symbol) at a fixed position, and multiple UEs share the symbol, and implement orthogonality of the reference signal by means of cyclic delay or Frequency Division multiplexing, and symbols other than the reference signal transmission symbol are all used for data transmission, fig. 1 is a schematic diagram of a TTI signal transmission structure in which reference signals are shared by means of cyclic delay in the prior art, as shown in fig. 1, one TTI is 4 symbols, Reference Signals (RSs) of multiple UEs are located in a common uplink Frequency Division multiple Access (SCH Frequency Division multiple Access) Division multiple Access (SCH 1, SCH — SCH 21) and SCH 21-35, and L are respectively located in a control signal transmission time slot of a Single Carrier Frequency Division multiple Access (SCH) transmission symbol, a Single Carrier) or a Single Carrier transmission Symbol (SCH) used for transmitting data signals, or control signal transmission.

In the above allocation manner, the reference signal transmission symbol is shared by multiple UEs, and no matter how to implement the orthogonality of the reference signal in the cyclic delay manner or the frequency division multiplexing manner, different UEs need to be indicated by signaling, which may increase signaling overhead and also bring certain difficulties to scheduling.

Disclosure of Invention

The embodiment of the invention provides an uplink resource allocation and signal modulation method and device, which can realize flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources in a short TTI (transmission time interval) without additional signaling overhead.

In a first aspect, an embodiment of the present invention provides an uplink resource allocation and signal modulation method, including:

user Equipment (UE) acquiring reference signal transmission resource granularity delta_RSAnd scheduling bandwidth

UE according to Delta_RSAnd

determining reference signal transmission resources and first signal transmission resources on a symbol containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, the first signal transmission resources are data signal transmission resources or control signal transmission resources, and the UE sends a reference signal and a first signal on the symbol containing the reference signal transmission resources, wherein the first signal is a data signal or a control signal. Wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

is a frequency domain resource block, each frequency domain resource block includes

Resource particle, Δ_RSCan be covered

And (4) trimming. Thus, only the reference signal transmission resource granularity Δ needs to be preset_RSOr the UE receives a_RSThe UE is receiving the toneBandwidth of degree

After that, it can be determined according to_RSReference signal transmission resources and first signal transmission resources in the scheduling bandwidth of one TTI are determined, and no multi-user shared reference signal transmission resources exist, so that scheduling is convenient, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be realized no matter how many time domain symbols are included in the TTI, and extra signaling overhead is not needed. And the problem that the frequency offset can generate multi-user interference when multiple users share the reference signal resource with a fixed position through frequency division multiplexing in the prior art is solved.

In one possible design, the UE may be based on Δ_RSAnd

determining reference signal transmission resources and first signal transmission resources on symbols comprising the reference signal transmission resources within a transmission time interval, TTI, comprising:

the UE determines the symbols containing the reference signal transmission resources which are distributed at equal intervals

A resource element, a first signal transmission resource is

And (4) resource particles.

In one possible design, when Δ_RSWhen the number of symbols containing reference signal transmission resources in one TTI is more than or equal to 4, the intervals of the reference signal transmission resources on all symbols containing reference signal transmission resources are equal in the frequency domain. Thus, the accuracy of the channel estimation algorithm based on frequency domain interpolation can be improved.

In one possible design, a UE may transmit a first signal on a symbol that includes reference signal transmission resources, including:

after carrying out Fast Fourier Transform (FFT) on the first signal, the UE sequentially maps the first signal to each resource particle in the first signal transmission resource;

the UE sequentially maps the frequency domain reference signals to each resource particle in the reference signal transmission resources according to the sequence;

after the mapping is completed, the IFFT is performed to obtain a time domain signal to be transmitted.

Through the possible design, after the FFT is performed on the first signal to be transmitted by the UE, the FFT is sequentially mapped to each resource particle in the first signal transmission resource and the reference signal transmission resource together with the reference signal in the frequency domain, and finally, the IFFT is performed to obtain the time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

the UE carries out periodic replication on the time domain waveform of the reference signal to obtain a signal containing delta_RSAfter a periodic signal of one period, the pair contains delta_RSMultiplying the periodic signal of each period by a frequency modulation signal;

and superposing the periodic signal multiplied by the frequency modulation signal and the first signal, and then sequentially carrying out FFT, frequency mapping and IFFT to obtain a time domain signal to be sent.

In one possible design, before the step of superimposing the periodic signal multiplied by the frequency modulation signal on the first signal, the method further includes:

dividing the first signal transmission resource into N resource particle sets, wherein the resource granularity of the resource particles in each resource particle set is delta_i；

Carrying out periodic replication on data bits corresponding to each resource particle set before or after coding and constellation point modulation mapping to obtain a data bit containing delta_iA periodic signal of one period;

respectively multiplying the periodic signal corresponding to each resource particle set by a frequency modulation signal;

and superposing all the signals multiplied by the frequency modulation signals to obtain a first signal superposed with the reference signal multiplied by the frequency modulation signals.

In one possible design, the resource granularity Δ is between different resource particle sets_iIs 2^pP is an integer.

In one possible design, the frequency modulated signal is e^jkwtWhere w is 2 pi Δ f, Δ f is a frequency interval between resource particles, k is a number corresponding to a position where resource particles in the resource particle set first appear in order from a low frequency to a high frequency within the scheduling bandwidth, and k is 0,1,2.

Through the possible design, the time domain waveform of the reference signal is periodically copied through the UE to obtain the waveform containing delta_RSAfter the signal of each period, a frequency modulation signal is multiplied, then the reference signal multiplied by the frequency modulation signal is superposed with the first signal, and then FFT, frequency mapping and IFFT are sequentially carried out to obtain a time domain signal to be sent. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

In a second aspect, an embodiment of the present invention provides an uplink resource allocation and signal modulation method, including:

sending reference signal transmission resource granularity delta to User Equipment (UE)_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

determining reference signal transmission resources and first signal transmission resources on a symbol containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, the first signal transmission resources are data signal transmission resources or control signal transmission resources, and receiving a reference signal and a first signal which are sent by UE on the symbol containing the reference signal transmission resources, and the first signal is a data signal or a control signal. Wherein，Δ_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming. Thus, only the reference signal transmission resource granularity Δ needs to be preset_RSOr the UE receives a_RSUE receiving the scheduled bandwidth

In a third aspect, an embodiment of the present invention provides a user equipment, including: a receiving module for obtaining reference signal transmission resource granularity Delta_RSAnd scheduling bandwidth

A processing module for processing according to Δ_RSAnd

determining reference signal transmission resources and first signal transmission resources, reference, on symbols comprising reference signal transmission resources within a transmission time interval, TTIThe device comprises a signal transmission resource and a first signal transmission resource, wherein the signal transmission resource and the first signal transmission resource are subjected to frequency division multiplexing, the first signal transmission resource is a data signal transmission resource or a control signal transmission resource, and a sending module is used for sending a reference signal and a first signal on a symbol containing the reference signal transmission resource, and the first signal is a data signal or a control signal. Wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming.

In one possible design, the processing module is specifically configured to:

determining the transmission resources of the reference signal on symbols comprising transmission resources of the reference signal distributed at equal intervals

A resource element, a first signal transmission resource is

And (4) resource particles.

In one possible design, further comprising when Δ_RSWhen the number of symbols containing reference signal transmission resources in one TTI is more than or equal to 4, the intervals of the reference signal transmission resources on all symbols containing reference signal transmission resources are equal in the frequency domain.

In one possible design, the sending module is specifically configured to:

after Fast Fourier Transform (FFT) is carried out on the first signal, the first signal is sequentially mapped to each resource particle in the first signal transmission resource;

sequentially mapping the reference signals of the frequency domain to each resource particle in the reference signal transmission resources;

In one possible design, the sending module includes:

a periodic replication unit for periodically replicating the time domain waveform of the reference signal to obtain a signal containing Δ_RSA periodic signal of one period;

a frequency modulation unit for modulating the signal containing Δ_RSMultiplying the periodic signal of each period by a frequency modulation signal;

and the superposition transformation unit is used for superposing the periodic signal multiplied by the frequency modulation signal and the first signal, and then sequentially carrying out FFT, frequency mapping and IFFT to obtain a time domain signal to be sent.

In one possible design, further comprising:

a signal processing unit, configured to divide the first signal transmission resource into N resource particle sets before the superposition transforming unit superposes the periodic signal multiplied by the frequency modulation signal and the first signal, where a resource granularity of resource particles in each resource particle set is Δ_i；

In one possible design, the frequency modulated signal is e^jkwtWhere w is 2 pi Δ f, Δ f is the frequency spacing between resource particlesAnd k is a number corresponding to a position where the resource particles in the resource particle set appear for the first time in the order from low frequency to high frequency within the scheduling bandwidth, and k is 0,1,2.

The beneficial effects of the access network device provided by the third aspect and the possible designs of the third aspect may refer to the beneficial effects brought by the possible designs of the first aspect and the first aspect, and are not described herein again.

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

a sending module, configured to send a reference signal transmission resource granularity Δ to a user equipment UE_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

and determining reference signal transmission resources and first signal transmission resources on symbols containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, and the first signal transmission resources are data signal transmission resources or control signal transmission resources. The UE comprises a receiving module, configured to receive a reference signal and a first signal sent by the UE on a symbol including a reference signal transmission resource, where the first signal is a data signal or a control signal. Wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming.

The beneficial effects of the access network device provided in the fourth aspect may refer to the beneficial effects brought by the second aspect, and are not described herein again.

In a fifth aspect, an embodiment of the present invention provides a user equipment, including: receiver for obtaining reference signal transmission resource granularity delta_RSAnd scheduling bandwidth

A processor for determining a function according to_RSAnd

the method comprises the steps of determining reference signal transmission resources and first signal transmission resources on a symbol containing the reference signal transmission resources within a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are frequency division multiplexed, the first signal transmission resources are data signal transmission resources or control signal transmission resources, and a transmitter is used for transmitting a reference signal and a first signal on the symbol containing the reference signal transmission resources, and the first signal is a data signal or a control signal. Wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming.

In one possible design, the processor is specifically configured to:

A resource element, a first signal transmission resource is

And (4) resource particles.

In one possible design, the transmitter is specifically configured to:

In one possible design, a transmitter includes:

a period duplicator for periodically duplicating the time domain waveform of the reference signal to obtain a signal containing delta_RSA periodic signal of one period;

frequency modulator, pair comprising delta_RSMultiplying the periodic signal of each period by a frequency modulation signal;

and the superposition converter is used for superposing the periodic signal multiplied by the frequency modulation signal and the first signal, and then sequentially carrying out FFT, frequency mapping and IFFT to obtain a time domain signal to be sent.

In one possible design, the transmitter further includes:

a signal processor for dividing the first signal transmission resource into N resource particle sets before the superposition converter superposes the periodic signal multiplied by the frequency modulation signal with the first signal, the resource granularity of the resource particles in each resource particle set being delta_i；

Data corresponding to each resource particle setBits, before or after coding and constellation point modulation mapping, making periodic duplication to obtain delta_iA periodic signal of one period;

The beneficial effects of the access network device provided by the fifth aspect and the possible designs of the fifth aspect may refer to the beneficial effects brought by the possible designs of the first aspect and the first aspect, and are not described herein again.

In a sixth aspect, an embodiment of the present invention provides an access network device, including:

a transmitter for transmitting a reference signal transmission resource granularity Δ to a user equipment UE_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

and determining reference signal transmission resources and first signal transmission resources on symbols containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, and the first signal transmission resources are data signal transmission resources or control signal transmission resources. A receiver for receiving a transmission resource containing a reference signal for a UEThe reference signal and the first signal are sent on the symbol of (2), and the first signal is a data signal or a control signal. Wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming.

The beneficial effects of the access network device provided by the sixth aspect may refer to the beneficial effects brought by the second aspect, and are not described herein again.

The uplink resource allocation and signal modulation method provided by the embodiment of the invention is realized by UE according to delta_RSAnd scheduling bandwidth

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. The reference signal transmission resource and the first signal transmission resource are frequency division multiplexed within a symbol containing the reference signal transmission resource, and then the UE transmits the reference signal and the first signal on the symbol containing the reference signal transmission resource. Only the granularity delta of the reference signal transmission resource needs to be preset_RSOr the UE receives a_RSUE receiving the scheduled bandwidth

After that, it can be determined according to_RSReference signal transmission resources and first signal transmission resources in the scheduling bandwidth of one TTI are determined, and no multi-user shared reference signal transmission resources exist, so that the scheduling is convenient, and flexible scheduling of the reference signal transmission resources and the first signal transmission resources in the short TTI can be realized no matter how many time domain symbols are included in the TTIAnd allocation, no additional signaling overhead is required. And the problem that the frequency offset can generate multi-user interference when multiple users share the reference signal resource with a fixed position through frequency division multiplexing in the prior art is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a TTI signal transmission structure using cyclic delay for reference signal sharing in the prior art;

fig. 2 is a flowchart illustrating a first method for uplink resource allocation and signal modulation according to an embodiment of the present invention;

fig. 3 is a schematic diagram of reference signal transmission resources and first signal transmission resources determined by a UE when TTIs are different according to a first embodiment of an uplink resource allocation and signal modulation method of the present invention;

FIG. 4 shows an embodiment of an uplink resource allocation and signal modulation method according to the present invention_TTIIs equal to 2, Δ_RSA reference signal transmission resource and a first signal transmission resource diagram determined by the UE when the reference signal transmission resource is equal to 6;

FIG. 5 is a flowchart illustrating a signal modulation method according to a first embodiment of the present invention;

fig. 6 is a schematic diagram of scheduling bandwidths and determining transmission resources for transmitting a reference signal according to a first embodiment of the signal modulation method;

fig. 7 is a schematic process diagram of a reference signal and a first signal in a first embodiment of a signal modulation method according to the present invention;

FIG. 8 is a flowchart illustrating a second embodiment of a signal modulation method according to the present invention;

fig. 9 is a schematic diagram of grouping the determined transmission resources for transmitting the RS and the transmission resources for transmitting the first signal according to the second embodiment of the signal modulation method of the present invention;

fig. 10 is a schematic diagram of resource mapping in the frequency domain before and after REG aggregation in a second embodiment of the signal modulation method according to the present invention;

FIG. 11 is a schematic diagram illustrating a processing procedure after REG aggregation in a second embodiment of the signal modulation method according to the present invention;

fig. 12 is a schematic structural diagram of a first user equipment embodiment according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a second user equipment embodiment according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a third user equipment embodiment according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of an access network device according to a first embodiment of the present invention;

fig. 16 is a schematic structural diagram of a fourth user equipment embodiment according to the present invention;

fig. 17 is a schematic structural diagram of a fifth embodiment of a user equipment according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a sixth embodiment of a user equipment according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a second embodiment of an access network device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solution of the embodiment of the present invention can be applied to various communication systems of a Wireless cellular network, such as a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS) System, an L TE System, a Universal Mobile Telecommunications System (UMTS), and the like, and the embodiments of the present invention are not limited.

The technical scheme of the embodiment of the invention is mainly applied to L TE systems, and the network elements involved in the communication system applied in the embodiment of the invention are access network equipment (base station) and UE.

The uplink resource allocation and signal modulation method and device provided by the embodiment of the invention can be used in the data transmission scenes of services with high real-time requirements and sensitive time delay, and how to realize flexible scheduling and allocation of the reference signal transmission resource and the first signal transmission resource in the short TTI, wherein the first signal transmission resource is a data signal transmission resource or a control signal transmission resource, and no extra signaling overhead is needed. The short TTI in the embodiment of the present invention is a TTI that, when 14 time domain symbols are included in an existing TTI, the number of included time domain symbols is less than 14, for example, the TTI is 7, 4, or 2. The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.

Fig. 2 is a flowchart illustrating a first method for uplink resource allocation and signal modulation according to an embodiment of the present invention, as shown in fig. 2, the method includes:

s101, UE obtains reference signal transmission resource granularity delta_RSAnd scheduling bandwidth

Wherein, Delta_RSThe bandwidth scheduling may be preset, or may be transmitted by a base station or other network elements

May be transmitted by a base station or other network element, Δ_RSIs an integer greater than 1, Δ_RSAnd scheduling bandwidth

When all are sent by the base station or other network elements, they may be carried in the same scheduling information, and Δ for each UE_RSMay be the same or different.

S102, UE according to delta_RSAnd

and determining reference signal transmission resources and first signal transmission resources on the symbols containing the reference signal transmission resources in the TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing.

The first signal transmission resource is a data signal transmission resource or a control signal transmission resource. Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming. Wherein, the resource particles occupy one symbol in time domain and one frequency resource unit in frequency domain, so that in one symbol, the number of the scheduled resource particles is

In particular, the reference signal transmission resource and the first signal transmission resource are in a scheduled bandwidth

The reference signal transmission resource can be a symbol occupying TTI or a plurality of symbols occupying TTI, and in the symbol containing the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and the symbol of TTIThe number may be any integer less than 14. Reference signal transmission resource granularity delta_RSMay be preset, and may set Δ according to different services_RS，Δ_RSIs capable of being set

And (4) trimming. For example

That is, 4 frequency domain resource blocks are scheduled for the UE, and the number of scheduled resource particles in one symbol is

At this time,. DELTA._RSIs divisible by 12, so that_RS∈{2，3，4，6，8，12}。

Further, the UE is based on Δ_RSAnd

determining that the reference signal transmission resources are equally spaced on symbols within the TTI containing the reference signal transmission resources

A resource element, a first signal transmission resource is

And (4) resource particles.

The above-described allocation scheme is described in a specific example with reference to the accompanying drawings.

FIG. 3 is a schematic diagram of a reference signal transmission resource and a first signal transmission resource determined by a UE when TTIs are different in a first embodiment of the uplink resource allocation and signal modulation method of the present invention, taking 14 symbols of a subframe as an example, for example, TTI is l_TTIOne OFDM (SC-FDMA) symbol, as shown in FIG. 3, l_TTI∈{1，2，4}，Δ_RSSet to 2, 3, 4 respectively. l_TTIIs 1, Δ_RSWhen set to 2, indicating that the UE has one resource particle in every 2 resource particlesReference signal transmission resource, UE received scheduling bandwidth

After, according to Δ_RSAnd

reference signal transmission resources within the scheduling bandwidth are determined, the resource elements within the scheduling bandwidth except for the determined reference signal transmission resources are all first signal transmission resources, and the reference signal transmission resources and the first signal transmission resources within the scheduling bandwidth determined by the UE are as shown in fig. 3 (a). l_TTIIs 1, Δ_RSWhen the setting is 3, indicating that one resource particle in every 3 resource particles of the UE belongs to the reference signal transmission resource, and receiving the scheduling bandwidth by the UE

After, according to Δ_RSAnd

the reference signal transmission resource and the first signal transmission resource within the determined scheduling bandwidth are as shown in fig. 3 (b). l_TTIIs 1, Δ_RSWhen the setting is 4, indicating that one resource particle in every 4 resource particles of the UE belongs to the reference signal transmission resource, and receiving the scheduling bandwidth by the UE

After, according to Δ_RSAnd

determining the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth is illustrated in fig. 3 (c). l_TTIIs 2, Δ_RSThe UE determines the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth when set to 2, 3, and 4, respectively, as shown in fig. 3(d), (e), (f), respectively. l_TTIIs 4, Δ_RSThe UE determines the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth when set to 2, 3, and 4, respectively, as shown in fig. 3(g), (h), (i), respectivelyThe reference signal transmission resource and the first signal transmission resource are frequency division multiplexed within the first symbol of the TTI, and the remaining 3 symbols are all the first signal transmission resources for transmitting the first signal. In addition,/[_TTICan be any integer less than 14, corresponding to Δ_RSIs capable of being set

The UE can receive the scheduling bandwidth

And then determining the reference signal transmission resource and the first signal transmission resource in the scheduling bandwidth. Fig. 3 is merely an example, and the reference signal transmission resource finally determined by the UE may be frequency division multiplexed within one symbol within the TTI or may be frequency division multiplexed within a plurality of symbols within the TTI. The setting can be specifically set according to the requirements of the actual transmission scene.

In particular, when Δ_RSAnd when the number of the symbols including the reference signal transmission resource in one TTI is more than or equal to 4, the TTI is more than or equal to 2 symbols, and when the number of the symbols including the reference signal transmission resource in one TTI is multiple, the reference signal transmission resources on all the symbols including the reference signal transmission resource also need to satisfy the equal interval in the frequency domain. FIG. 4 shows an embodiment of an uplink resource allocation and signal modulation method according to the present invention_TTIIs equal to 2, Δ_RSReference signal transmission resource and first signal transmission resource diagram determined by UE when being equal to 6, as shown in figure 4, l_TTIIs equal to 2, Δ_RSEqual to 6, the interval of the reference signal transmission resource in the frequency domain is constant to 2 resource elements within 2 symbols. Thus, the accuracy of the channel estimation algorithm based on frequency domain interpolation can be improved.

S103, the UE sends a reference signal and a first signal on a symbol containing reference signal transmission resources.

The first signal is a data signal or a control signal.

Correspondingly, the method further comprises the following steps: the base station or other network element receives a reference signal and a first signal transmitted by the UE on symbols comprising reference signal transmission resources.

In S103, when the UE transmits the reference signal and the first signal in the symbol including the reference signal transmission resource, the UE may perform signal modulation by using an existing method.

The uplink resource allocation and signal modulation method provided in this embodiment is implemented by UE according to Δ_RSAnd scheduling bandwidth

Further, according to the uplink resource allocation method shown in fig. 2, as two preferred embodiments of the present invention, when the UE transmits the reference signal and the first signal on the symbol including the reference signal transmission resource in S103, the following two embodiments may be adopted for signal modulation.

As a first implementation manner, fig. 5 is a schematic flow chart of a first embodiment of a signal modulation method according to the present invention, and as shown in fig. 5, the method of the present implementation includes:

s201, after Fast Fourier Transform (FFT) is carried out on the sent first signal by the UE, the first signal is sequentially mapped to each resource particle in the first signal transmission resource.

S202, the UE sequentially maps the reference signals of the frequency domain to each resource particle in the reference signal transmission resources according to the sequence.

S203, after the mapping is completed, Inverse Fast Fourier Transform (IFFT) is performed to obtain a time domain signal to be transmitted.

In this embodiment, after performing FFT on the first signal to be transmitted by the UE, the first signal and the reference signal are sequentially mapped to each resource particle in the first signal transmission resource and the reference signal transmission resource in sequence, and finally, IFFT is performed to obtain a time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

Since the uplink resource allocation method shown in fig. 2 of the present invention is adopted, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed in a certain symbol or certain symbols of the TTI, when the UE transmits the reference signal and the first signal in the symbol including the resource particles in the reference signal transmission resource, if the UE modulates and transmits the signal according to the existing method, the peak-to-average ratio may be high, and therefore, preferably, in order to reduce the peak-to-average ratio to the maximum extent, in the embodiment of the present invention, the method shown in fig. 5 may be adopted to perform modulation, and the modulation is performed to a time domain signal and then the time domain signal is transmitted. When all resource elements in one symbol belong to the first signal transmission resource, the resource elements can be transmitted according to the existing modulation transmission method.

The technical solution of the above embodiment will be described in detail below by using a specific example.

In this embodiment, the following

Δ_RS＝6，

For the purpose of example only,

that is, the scheduling bandwidth is 6 Resource Blocks (RBs), fig. 6 is a schematic diagram of scheduling bandwidth and determining transmission resources for transmitting reference signals in the first embodiment of the signal modulation method of the present invention, as shown in fig. 6, UE transmits reference signals according to Δ_RSAnd scheduling bandwidth

Determining that transmission resources of reference signals within a symbol of a TTI are equally spaced

A resource element for transmitting Reference Signal (RS) to determine the remaining

The resource element is a first signal transmission resource within one symbol of the TTI for transmitting a first signal. After the reference signal transmission resource and the first signal transmission resource are determined, the UE sends the reference signal and the first signal on the determined reference signal transmission resource and the first signal transmission resource for modulation, fig. 7 is a schematic process diagram of a modulation method of the reference signal and the first signal in the first embodiment of the signal modulation method of the present invention, as shown in fig. 7, first, the UE performs FFT on the sent first signal, sequentially maps the first signal to each resource particle in the first signal transmission resource in sequence, and sequentially maps the reference signal of the frequency domain to each resource particle in the reference signal transmission resource in sequence. The reference signal of the frequency domain may be a reference signal sequence of the time domain transformed to the frequency domain through FFT, or a reference signal sequence may be directly generated in the frequency domain. After the mapping is completed, IFFT is performed to obtain a time domain signal to be transmitted.

As a second implementation manner, fig. 8 is a schematic flow chart of a second embodiment of the signal modulation method of the present invention, and as shown in fig. 8, the method of this embodiment may include:

s301, UE carries out periodic replication on time domain waveform of reference signal to obtain a signal containing delta_RSAfter a periodic signal of one period, the pair contains delta_RSThe periodic signal of each period is multiplied by a frequency modulation signal.

And S302, superposing the periodic signal multiplied by the frequency modulation signal and the first signal, and then sequentially performing FFT, frequency mapping and IFFT to obtain a time domain signal to be sent.

Specifically, before the reference signal multiplied by the frequency modulation signal is superimposed on the first signal, the method further includes:

s303, dividing the first signal transmission resource into N resource particle sets, wherein the resource granularity of the resource particles in each resource particle set is delta_i。

S304, carrying out periodic replication on the data bit corresponding to each resource particle set before or after coding and constellation point modulation mapping to obtain a data bit containing delta_iA periodic signal of one period.

S305, multiplying the periodic signal corresponding to each resource particle set by a frequency modulation signal.

And S306, superposing all the signals multiplied by the frequency modulation signals to obtain a first signal superposed with the reference signal multiplied by the frequency modulation signals.

Wherein Δ of resource particles in different sets of resource particles_iSatisfy 2 therebetween^pP is an integer. That is, Δ in each resource particle set_iMay be the same or different. But satisfy 2^pMultiple of (d).

Specifically, the frequency modulation signal is e^jkwtWhere w is 2 pi Δ f, Δ f is a frequency interval between resource particles, k is a resource particle serial number, that is, a serial number corresponding to a position where resource particles in the resource particle set appear for the first time in order from a low frequency to a high frequency within the scheduling bandwidth, and k is 0,1,2.

In this embodiment, the time domain waveform of the reference signal is periodically copied by the UE to obtain a waveform containing Δ_RSAfter the signal of each period, multiplying a frequency modulation signal, then superposing the reference signal multiplied by the frequency modulation signal and the first signal, then performing FFT, frequency mapping and IFFT in sequence,a time domain signal to be transmitted is obtained. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

Since the uplink resource allocation method shown in fig. 2 of the present invention is adopted, in a certain symbol or certain symbols of a TTI, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, when the UE transmits the reference signal and the first signal in the symbol including the resource particles in the reference signal transmission resource, if the UE modulates and transmits the signal according to the existing method, the peak-to-average ratio may be high, and therefore, in order to reduce the peak-to-average ratio to the maximum extent, in the embodiment of the present invention, the method shown in fig. 8 may be adopted to perform modulation, and the modulation is performed to a time domain signal and then the time domain signal is transmitted. When all resource elements in one symbol belong to the first signal transmission resource, the resource elements can be transmitted according to the existing modulation transmission method.

In this embodiment, the following

Δ_RS＝4，

For the purpose of example only,

i.e. the scheduling bandwidth is 4 Resource Blocks (RBs), fig. 9 is a schematic diagram of grouping the determined transmission resources for transmitting the RS and the transmission resources for transmitting the first signal in the second embodiment of the signal modulation method of the present invention, as shown in fig. 8, 4 RBs, Δ_RSA total of 48 resource elements are scheduled, UE according to Δ_RSAnd scheduling bandwidth

One resource element for transmitting the RS, and the remaining 36 resource elements for transmitting the first signal. After the reference signal transmission resource and the first signal transmission resource are determined, the UE transmits the reference signal and the first signal on the determined reference signal transmission resource and the first signal transmission resource, and the UE performs modulation when transmitting the reference signal and the first signal in a symbol containing resource particles in the reference signal transmission resource.

First, 12 resource elements for transmitting the RS are divided into one resource element set (fig. 8 shows the RS), and 36 resource elements for transmitting the first signal are divided into three resource element sets, fig. 8 shows REG1, REG2, and REG 3. Each resource particle set comprises 12 resource particles, and the resource granularity delta of the resource particles in each resource particle set_i4, Δ of resource particle in resource particle set corresponding to RS_RSSimilarly, one resource element in every 4 resource elements belongs to the reference signal transmission resource (RS shown in fig. 9), one resource element in every 4 resource elements belongs to REG1, one resource element in every 4 resource elements belongs to REG2, and one resource element in every 4 resource elements belongs to REG 3.

Next, two groups of REGs are aggregated into one group, fig. 10 is a resource mapping schematic diagram before and after aggregation of REGs in a second embodiment of the signal modulation method of the present invention in the frequency domain, as shown in fig. 10, for clarity, fig. 10 only shows an aggregation schematic diagram of 12 resource elements, and REG2 and REG3 are aggregated into a new resource element set REG2+ REG3, where the resource granularity of the resource elements in the resource element set REG2 or REG3 before aggregation is Δ_i1Resource granularity of resource particles in the new resource particle set REG2+ REG3 is Δ _i22, as shown in fig. 9, one resource element out of every 2 resource elements belongs to REG2+ REG3, Δ_i1＝2Δ_i2. After aggregation, it becomes 3 resource element sets REG1, REG2+ REG3, and RS.

FIG. 11 is a schematic diagram of the processing procedure after REG aggregation in the second embodiment of the signal modulation method of the present invention, as shown in FIG. 11, the aggregation obtains 3 resource element sets REG1, REG2+ REG3 and RS, and then, for each setThe time domain waveform of the reference signal is periodically copied to obtain a signal containing delta_RSA periodic signal of one period; before or after coding and constellation point modulation mapping are carried out on data bits corresponding to each resource particle set in the first signal transmission resource, periodic replication is carried out to obtain a data bit containing delta_iPeriodic signal of one period, Δ_iΔ of REG1 for the resource granularity of the resource particles in each resource particle set_REG14, Δ of REG2+ REG3 _REG2+REG32, Δ of RS _RS4, namely, before or after the data bits corresponding to the resource element set REG1 are encoded and mapped by constellation point modulation, periodic replication is performed to obtain a periodic signal including 4 periods; carrying out periodic replication before or after coding and constellation point modulation mapping on data bits corresponding to the resource particle set REG2+ REG3 to obtain a periodic signal containing 2 periods; and carrying out periodic replication on the time domain waveform of the RS to obtain a periodic signal containing 4 periods.

Then, multiplying the periodic signal corresponding to each resource particle set by a frequency modulation signal e^jkwtWhere w is 2 pi Δ f, Δ f is a frequency interval between resource particles, k is a number corresponding to a position where resource particles in the resource particle set first appear in order from a low frequency to a high frequency within the scheduling bandwidth, and k is 0,1,2. As shown in FIG. 11, the periodic signal corresponding to REG1 is multiplied by e^jkwtK is 0; multiplying the periodic signal corresponding to RS by e^jkwtK is 2; multiplying the periodic signal corresponding to REG2+ REG3 by e^jkwt，k＝1。

And finally, superposing all the signals multiplied by the frequency modulation signals, and sequentially performing FFT, frequency mapping and IFFT on the superposed signals to obtain time domain signals to be sent.

Fig. 12 is a schematic structural diagram of a first user equipment embodiment provided in an embodiment of the present invention, and as shown in fig. 12, the user equipment includes: a receiving module 11, a processing module 12 and a sending module 13, wherein the receiving module 11 is configured to obtain a reference signal transmission resource granularity Δ_RSAnd scheduling bandwidth

The processing module 12 is used for determining the value according to_RSAnd

and determining reference signal transmission resources and first signal transmission resources on symbols containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, and the first signal transmission resources are data signal transmission resources or control signal transmission resources. The sending module 13 is configured to send a reference signal and a first signal on a symbol including a reference signal transmission resource, where the first signal is a data signal or a control signal.

Wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to a reference signal transmission resource,

Resource particle, Δ_RSCan be covered

And (4) trimming.

Specifically, the processing module 12 is specifically configured to: determining the transmission resources of the reference signal on symbols comprising transmission resources of the reference signal distributed at equal intervals

A resource element, a first signal transmission resource is

And (4) resource particles.

Further, when Δ_RSWhen the number of symbols containing reference signal transmission resources in one TTI is more than or equal to 4, the reference signal transmission resources on all symbols containing reference signal transmission resources are spaced on the frequency domainAre equal.

The user equipment shown in fig. 12 is configured to execute the foregoing method embodiment shown in fig. 2, and the implementation principle and technical effect are similar, which are not described herein again.

The user equipment provided by the embodiment is processed by the processing module according to the delta_RSAnd scheduling bandwidth

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. The reference signal transmission resource and the first signal transmission resource are frequency division multiplexed within a symbol containing the reference signal transmission resource, and then the transmission module transmits the reference signal and the first signal on the symbol containing the reference signal transmission resource. Only the granularity delta of the reference signal transmission resource needs to be preset_RSOr the receiving module receives Δ_RSThe receiving module receives the scheduling bandwidth

The processing module can then be based on Δ_RSReference signal transmission resources and first signal transmission resources in the scheduling bandwidth of one TTI are determined, and no multi-user shared reference signal transmission resources exist, so that scheduling is convenient, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be realized no matter how many time domain symbols are included in the TTI, and extra signaling overhead is not needed. And the problem that the frequency offset can generate multi-user interference when multiple users share the reference signal resource with a fixed position through frequency division multiplexing in the prior art is solved.

Further, as a preferred embodiment of the present invention, the sending module 13 is specifically configured to:

and after the first signal is subjected to Fast Fourier Transform (FFT), sequentially mapping the first signal to each resource particle in the first signal transmission resource. And mapping the reference signals of the frequency domain to each resource particle in the reference signal transmission resources in sequence. The reference signal of the frequency domain may be a reference signal sequence of the time domain transformed to the frequency domain through FFT, or a reference signal sequence may be directly generated in the frequency domain. After the mapping is completed, the IFFT is performed to obtain a time domain signal to be transmitted.

After FFT is carried out on the first signal sent by the sending module, the FFT and the reference signal of the frequency domain are sequentially mapped to each resource particle in the first signal transmission resource and the reference signal transmission resource in sequence, and finally IFFT is carried out to obtain a time domain signal to be sent. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

Fig. 13 is a schematic structural diagram of a second user equipment embodiment provided in the embodiment of the present invention, and as shown in fig. 13, on the basis of the user equipment shown in fig. 12, further, the sending module 13 includes: a periodic replication unit 131, a frequency modulation unit 132, and a superposition transformation unit 133, where the periodic replication unit 131 is configured to perform periodic replication on a time domain waveform of a reference signal to obtain a waveform containing Δ_RSA periodic signal of one period. The frequency modulation unit 132 is used for modulating the signal containing delta_RSThe periodic signal of each period is multiplied by a frequency modulation signal. The superposition transform unit 133 is configured to superpose the periodic signal multiplied by the frequency modulation signal and the first signal, and then perform FFT, frequency mapping, and IFFT in sequence to obtain a time domain signal to be transmitted.

Fig. 14 is a schematic structural diagram of a third user equipment embodiment provided in the embodiment of the present invention, and as shown in fig. 14, on the basis of the user equipment shown in fig. 13, further, the sending module 13 further includes: a signal processing unit 134, wherein the signal processing unit 134 is configured to divide the first signal transmission resource into N resource particle sets before the superposition transform unit 133 superposes the periodic signal multiplied by the frequency modulation signal and the first signal, and the resource granularity of the resource particles in each resource particle set is Δ_iCarrying out periodic replication on data bits corresponding to each resource particle set before or after coding and constellation point modulation mapping to obtain a data bit containing delta_iThe periodic signals of each period are multiplied by a frequency modulation signal respectively corresponding to each resource particle set, all the signals multiplied by the frequency modulation signals are superposed to obtain the sum of the frequency modulation signals and the sum of the frequency modulation signalsAnd the reference signal after the rate modulation signal is superposed with the first signal.

Further, between different resource particle sets, the resource granularity Δ_iIs 2^pP is an integer.

Optionally, the frequency modulation signal is e^jkwtWhere w is 2 pi Δ f, Δ f is a frequency interval between resource particles, k is a number corresponding to a position where resource particles in the resource particle set first appear in order from a low frequency to a high frequency within the scheduling bandwidth, and k is 0,1,2.

The user equipment shown in fig. 13 and fig. 14 is configured to execute the foregoing method embodiment shown in fig. 8, and the implementation principle and technical effect are similar, which are not described herein again.

In the user equipment shown in fig. 13 and 14, the sending module performs periodic replication on the time domain waveform of the reference signal to obtain a waveform containing Δ_RSAfter the signal of each period, a frequency modulation signal is multiplied, then the reference signal multiplied by the frequency modulation signal is superposed with the first signal, and then FFT, frequency mapping and IFFT are sequentially carried out to obtain a time domain signal to be sent. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

Fig. 15 is a schematic structural diagram of an access network device according to a first embodiment of the present invention, and as shown in fig. 15, the access network device includes: a sending module 21 and a receiving module 22, wherein the sending module 21 is configured to send a reference signal transmission resource granularity Δ to a user equipment UE_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

and determining reference signal transmission resources and first signal transmission resources on symbols containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, and the first signal transmission resources are data signal transmission resources or control signal transmission resources.The receiving module 22 is configured to receive a reference signal and a first signal sent by the UE on a symbol including a reference signal transmission resource, where the first signal is a data signal or a control signal.

Resource particle, Δ_RSCan be covered

And (4) trimming.

In the access network device provided in this embodiment, the sending module sends Δ to the UE_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

a reference signal transmission resource and a first signal transmission resource within the TTI are determined. The reference signal transmission resource and the first signal transmission resource are frequency division multiplexed within a symbol containing the reference signal transmission resource, and then the receiving module receives the reference signal and the first signal transmitted by the UE on the symbol containing the reference signal transmission resource. No multi-user shared reference signal transmission resource exists, so that the scheduling is more convenient, the flexible scheduling and allocation of the reference signal transmission resource and the first signal transmission resource in the short TTI can be realized no matter how many time domain symbols are contained in the TTI, and no additional signaling overhead is needed. And the problem that the frequency offset can generate multi-user interference when multiple users share the reference signal resource with a fixed position through frequency division multiplexing in the prior art is solved.

Fig. 16 is a structural diagram of a fourth embodiment of a user equipment according to the present inventionIt is intended that, as shown in fig. 16, the user equipment includes: a receiver 31, a processor 32 and a transmitter 33, wherein the receiver 31 is configured to obtain a reference signal transmission resource granularity Δ_RSAnd scheduling bandwidth

The processor 32 is arranged to operate on the basis of delta_RSAnd

and determining reference signal transmission resources and first signal transmission resources on symbols containing the reference signal transmission resources in a transmission time interval TTI, wherein the reference signal transmission resources and the first signal transmission resources are subjected to frequency division multiplexing, and the first signal transmission resources are data signal transmission resources or control signal transmission resources. The transmitter 33 is configured to transmit a reference signal and a first signal on a symbol comprising a reference signal transmission resource, the first signal being a data signal or a control signal.

Resource particle, Δ_RSCan be covered

And (4) trimming.

In particular, the processor 32 is specifically configured to: determining the transmission resources of the reference signal on symbols comprising transmission resources of the reference signal distributed at equal intervals

A resource element, a first signal transmission resource is

And (4) resource particles.

Further, when Δ_RSWhen the number of symbols containing reference signal transmission resources in one TTI is more than or equal to 4, the intervals of the reference signal transmission resources on all symbols containing reference signal transmission resources are equal in the frequency domain.

The user equipment shown in fig. 16 is configured to execute the foregoing method embodiment shown in fig. 2, and the implementation principle and technical effect are similar, which are not described herein again.

The user equipment provided by the embodiment is based on delta through the processor_RSAnd scheduling bandwidth

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. The reference signal transmission resource and the first signal transmission resource are frequency division multiplexed within a symbol containing the reference signal transmission resource, and then the transmitter transmits the reference signal and the first signal on the symbol containing the reference signal transmission resource. Only the granularity delta of the reference signal transmission resource needs to be preset_RSOr the receiver receives Δ_RSReceiver receiving scheduled bandwidth

The processor can then be based on Δ_RSReference signal transmission resources and first signal transmission resources in the scheduling bandwidth of one TTI are determined, and no multi-user shared reference signal transmission resources exist, so that scheduling is convenient, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be realized no matter how many time domain symbols are included in the TTI, and extra signaling overhead is not needed. And the problem that the frequency offset can generate multi-user interference when multiple users share the reference signal resource with a fixed position through frequency division multiplexing in the prior art is solved.

Further, as a preferred embodiment of the present invention, the transmitter 33 is specifically configured to:

After FFT is carried out on the first signal sent by the sender, the FFT and the reference signal of the frequency domain are sequentially mapped to each resource particle in the first signal transmission resource and the reference signal transmission resource in sequence, and finally IFFT is carried out to obtain a time domain signal to be sent. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

Fig. 17 is a schematic structural diagram of a fifth embodiment of a user equipment according to an embodiment of the present invention, as shown in fig. 17, and on the basis of the user equipment shown in fig. 16, further, the transmitter 33 includes: a period duplicator 331, a frequency modulator 332 and a superposition transformer 333, wherein the period duplicator 331 is used for making period duplication on the time domain waveform of the reference signal to obtain a waveform containing delta_RSA periodic signal of one period. The frequency modulator 332 is used for modulating the signal containing delta_RSThe periodic signal of each period is multiplied by a frequency modulation signal. The superposition transformer 333 is configured to superimpose the periodic signal multiplied by the frequency modulation signal and the first signal, and then perform FFT, frequency mapping, and IFFT in sequence to obtain a time domain signal to be transmitted.

Fig. 18 is a schematic structural diagram of a sixth embodiment of a user equipment according to an embodiment of the present invention, as shown in fig. 18, on the basis of the user equipment shown in fig. 17, further, the transmitter 33 further includes: a signal processor 334, the signal processor 334 being configured to divide the first signal transmission resource into N resource particle sets before the superposition transformer 333 superposes the periodic signal multiplied by the frequency modulation signal with the first signal, the resource particle in each resource particle set having a resource granularity Δ_iBefore or after coding and constellation point modulation mapping, the data bit corresponding to each resource particle set is subjected to periodic complex mappingTo obtain a product containing_iAnd the periodic signals of each period are multiplied by a frequency modulation signal respectively, and all the signals multiplied by the frequency modulation signals are superposed to obtain a first signal superposed with the reference signal multiplied by the frequency modulation signal.

The user equipment shown in fig. 17 and fig. 18 is configured to execute the foregoing method embodiment shown in fig. 8, and the implementation principle and technical effect are similar, which are not described herein again.

The user equipment shown in fig. 17 and 18 obtains a time domain waveform containing Δ by periodically copying the time domain waveform of the reference signal by the transmitter_RSAfter the signal of each period, a frequency modulation signal is multiplied, then the reference signal multiplied by the frequency modulation signal is superposed with the first signal, and then FFT, frequency mapping and IFFT are sequentially carried out to obtain a time domain signal to be sent. Therefore, the peak-to-average ratio of the signals after frequency division multiplexing can be reduced to the maximum extent, and the uplink single carrier characteristic is kept.

Fig. 19 is a schematic structural diagram of an access network device according to a second embodiment of the present invention, and as shown in fig. 19, the access network device includes: a transmitter 41 and a receiver 42, wherein the transmitter 41 is configured to transmit a reference signal transmission resource granularity Δ to a user equipment UE_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

determining symbols containing reference signal transmission resources within a transmission time interval, TTIThe reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and the first signal transmission resource is a data signal transmission resource or a control signal transmission resource. The receiver 42 is configured to receive a reference signal and a first signal, where the first signal is a data signal or a control signal, sent by the UE on a symbol including a reference signal transmission resource.

Resource particle, Δ_RSCan be covered

And (4) trimming.

The access network device provided in this embodiment transmits Δ to the UE through the transmitter_RSAnd scheduling bandwidth

To let the UE according to Δ_RSAnd

a reference signal transmission resource and a first signal transmission resource within the TTI are determined. The reference signal transmission resource and the first signal transmission resource are frequency division multiplexed within a symbol containing the reference signal transmission resource, and then the receiver receives the reference signal and the first signal transmitted by the UE on the symbol containing the reference signal transmission resource. No multi-user shared reference signal transmission resource exists, so that the scheduling is more convenient, the flexible scheduling and allocation of the reference signal transmission resource and the first signal transmission resource in the short TTI can be realized no matter how many time domain symbols are contained in the TTI, and no additional signaling overhead is needed. And avoids the prior art that multiple users pass frequency division multiplexingThe frequency offset may cause multi-user interference when the fixed position reference signal resources are shared.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

As will be appreciated by one of ordinary skill in the art, various aspects of the present application, or possible implementations of various aspects, may be embodied as a system, method, or computer program product. Accordingly, aspects of the present application, or possible implementations of aspects, may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a "circuit," module "or" system. Furthermore, aspects of the present application, or possible implementations of aspects, may take the form of a computer program product referring to computer readable program code stored in a computer readable medium.

The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing, such as Random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, and portable read-only memory (CD-ROM).

A processor in the computer reads the computer-readable program code stored in the computer-readable medium, so that the processor can perform the functional actions specified in each step, or a combination of steps, in the flowcharts; and means for generating a block diagram that implements the functional operation specified in each block or a combination of blocks.

The computer readable program code may execute entirely on the user's local computer, partly on the user's local computer, as a stand-alone software package, partly on the user's local computer and partly on a remote computer or entirely on the remote computer or server. It should also be noted that, in some alternative implementations, the functions noted in the flowchart or block diagram block may occur out of the order noted in the figures. For example, two steps or two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An uplink resource allocation and signal modulation method, comprising:

The UE according to Delta_RSAnd

determining a reference signal transmission resource and a first signal transmission resource on a symbol containing the reference signal transmission resource within a transmission time interval TTI, wherein the reference signal transmission resource and the first signal transmission resource are in frequency division multiplexing, and the first signal transmission resource is a data signal transmission resource or a control signal transmission resource;

the UE sends a reference signal and a first signal on a symbol containing reference signal transmission resources, wherein the first signal is a data signal or a control signal;

wherein, Delta_RSFor indicating per delta_RSOne of the resource elements belongs to the reference signal transmission resource,

Resource particle, Δ_RSCan be covered

Trimming;

and, the said Δ_RSAn integer greater than 1.

2. The method of claim 1, wherein the UE is based on Δ_RSAnd

the UE determines symbols containing reference signal transmission resources which are distributed at equal intervals

A resource element, a first signal transmission resource is

And (4) resource particles.

3. The method of claim 1 or 2, wherein Δ is measured as_RSWhen the number of symbols containing reference signal transmission resources in one TTI is more than or equal to 4, all the reference signal transmission resources on the symbols containing the reference signal transmission resources are on the frequency domainAre equally spaced.

4. The method of claim 1, wherein the UE transmits a first signal on a symbol containing reference signal transmission resources, comprising:

after the UE carries out Fast Fourier Transform (FFT) on the first signal, sequentially mapping the first signal to each resource particle in the first signal transmission resource in sequence;

the UE sequentially maps the reference signals of the frequency domain to each resource particle in the reference signal transmission resources in sequence;

5. The method of claim 1, wherein the UE transmits a first signal on a symbol containing reference signal transmission resources, comprising:

the UE carries out periodic replication on the time domain waveform of the reference signal to obtain a waveform containing delta_RSAfter a period signal of one period, for the inclusion of delta_RSMultiplying the periodic signal of each period by a frequency modulation signal;

and superposing the periodic signal multiplied by the frequency modulation signal with the first signal, and then sequentially carrying out FFT, frequency mapping and IFFT to obtain a time domain signal to be sent.

6. The method of claim 5, further comprising, before superimposing the periodic signal multiplied by the frequency modulated signal with the first signal:

multiplying the periodic signal corresponding to each resource particle set by one frequency modulation signal respectively;

7. The method of claim 6, wherein the resource granularity Δ is between different resource particle sets_iIs 2^pP is an integer.

8. The method of claim 5, the frequency modulation signal being e^jkwtWhere w is 2 pi Δ f, Δ f is a frequency interval between resource particles, k is a number corresponding to a position where resource particles in the resource particle set first appear in order from low frequency to high frequency within the scheduling bandwidth, and k is 0,1,2.

9. An uplink resource allocation and signal modulation method, comprising:

To make the UE according to a_RSAnd

receiving a reference signal and a first signal which are sent by the UE on a symbol containing reference signal transmission resources, wherein the first signal is a data signal or a control signal;

wherein, Delta_RSFor indicating per delta_RSResource particleOne resource element belongs to the reference signal transmission resource,

Resource particle, Δ_RSCan be covered

Trimming;

and, the said Δ_RSAn integer greater than 1.

10. A user device, comprising:

receiver for obtaining reference signal transmission resource granularity delta_RSAnd scheduling bandwidth

A processor for determining a function according to_RSAnd

a transmitter for transmitting a reference signal and a first signal on a symbol containing a reference signal transmission resource, the first signal being a data signal or a control signal;

Resource particle, Δ_RSCan be covered

Trimming;

and, the said Δ_RSAn integer greater than 1.

11. The user equipment of claim 10, wherein the processor is specifically configured to:

A resource element, a first signal transmission resource is

And (4) resource particles.

12. The UE of claim 10 or 11, wherein Δ is when Δ_RSWhen the number of symbols containing reference signal transmission resources in one TTI is more than or equal to 4, the intervals of the reference signal transmission resources on all symbols containing reference signal transmission resources are equal in the frequency domain.

13. The user equipment of claim 10, wherein the transmitter is specifically configured to:

after performing Fast Fourier Transform (FFT) on the first signal, sequentially mapping the first signal to each resource particle in the first signal transmission resource in sequence;

sequentially mapping the reference signals of the frequency domain to each resource particle in the reference signal transmission resources in sequence;

14. The user equipment of claim 10, wherein the transmitter comprises:

a frequency modulator for modulating said signal containing Δ_RSMultiplying the periodic signal of each period by a frequency modulation signal;

15. The user equipment of claim 14, the transmitter further comprising:

16. The UE of claim 15, wherein resource granularity Δ is between different sets of resource particles_iIs 2^pP is an integer.

17. The user equipment of claim 14, the frequency modulated signal is e^jkwtWhere w is 2 pi Δ f, Δ f is a frequency interval between resource particles, k is a number corresponding to a position where resource particles in the resource particle set first appear in order from low frequency to high frequency within the scheduling bandwidth, and k is 0,1,2.

18. An access network device, comprising:

To make the UE according to a_RSAnd

a receiver, configured to receive a reference signal and a first signal sent by the UE on a symbol including a reference signal transmission resource, where the first signal is a data signal or a control signal;

Resource particle, Δ_RSCan be covered

Trimming;

and, the said Δ_RSAn integer greater than 1.