WO2017185406A1

WO2017185406A1 - Method and device for uplink resource allocation and signal modulation

Info

Publication number: WO2017185406A1
Application number: PCT/CN2016/081568
Authority: WO
Inventors: 孙彦良; 刘斌; 王键
Original assignee: 华为技术有限公司
Priority date: 2016-04-29
Filing date: 2016-05-10
Publication date: 2017-11-02
Also published as: CN108713299A; CN108713299B

Abstract

Provided in embodiments of the present invention are a method and device for uplink resource allocation and signal modulation, the method comprising: a UE obtains a reference signal transmission resource granularity Δ_RS and a scheduling bandwidth N_u ^RB, and determines, according to the Δ_RS and N_u ^RB, 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), the reference signal transmission resource and first signal transmission resource being frequency-division multiplexed. The UE sends a reference signal and a first signal on a symbol containing the reference signal transmission resource. By means of the present method, the reference signal transmission resource and first signal transmission resource can be flexibly scheduled and allocated within a short TTI, while requiring no 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 an uplink resource allocation and signal modulation method and apparatus.

Background technique

The uplink service transmission in the Long Term Evolution (LTE) system is based on base station scheduling. The basic time unit of scheduling is one subframe, and one subframe includes 14 time domain symbols (one subframe). Equal to two slots (Slot). In the LTE and LTE-A standards, the Transmission Time Interval (TTI) is equal to the size of one subframe, that is, one TTI is 14 time domain symbols. In the future fifth-generation mobile communication technology (5G) wireless communication system, a variety of service modes will be supported, and services capable of supporting low latency and high reliability are an important direction for the evolution of 5G technology. At present, in the evolution process of LTE, research has been made to speed up data transmission for some services with high real-time requirements and relatively sensitive delays to provide short TTIs with less than 14 time-domain symbols.

In the prior art, for short TTI data transmission, uplink resource allocation is to divide an uplink TTI into a reference signal transmission symbol and a data signal or control signal transmission symbol set, and the reference signal transmission symbol is used to transmit the receiving end. The reference signal for channel estimation and channel measurement, the data signal or the control signal transmission symbol set is used to transmit data of a user equipment (User Equipment, UE for short). The reference signal transmission symbol is a symbol of a fixed position (such as the 4th or 11th symbol), and the plurality of UEs share the symbol, and the orthogonality of the reference signal is implemented by a cyclic delay method or a frequency division multiplexing manner. Symbols other than the reference signal transmission symbols are used for data transmission. FIG. 1 is a schematic diagram of a TTI signal transmission structure in which a reference signal is shared by a cyclic delay method in the prior art. As shown in FIG. 1 , one TTI is 4 symbols, and a TTI demodulation reference signal (RS) of multiple UEs is located. In the common uplink single carrier frequency division multiple access (SC-FDMA) symbol (the fourth symbol shown in Figure 1), the three UEs shown in Figure 1 (UL shown in Figure 1) -SCH1, UL-SCH2, UL-SCH3) respectively occupy different data signals or control signal transmission periods to transmit data signals or control signals, and RS is located at the fourth The symbols are orthogonal to the reference signal by means of cyclic delay.

In the foregoing allocation mode, the reference signal transmission symbol is shared by multiple UEs, and the orthogonality of the reference signal is implemented by using a cyclic delay method or a frequency division multiplexing manner, and different UEs need to be indicated by signaling, and signaling is increased. The overhead will also bring certain difficulties to the scheduling.

Summary of the invention

The embodiments of the present invention provide an uplink resource allocation and signal modulation method and apparatus, which can implement flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources in a short TTI, without requiring 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 acquires reference signal transmission resource granularity Δ _RS and scheduling bandwidth

UE based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and the first signal transmission resource is a data signal The transmission resource or the control signal transmission resource, the UE transmits the reference signal and the first signal on the symbol including the reference signal transmission resource, and the first signal is a data signal or a control signal. Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

The unit is a frequency domain resource block, and each frequency domain resource block is included.

Resource particles, Δ _RS can be

Divisible. Therefore, it is only necessary to preset the reference signal transmission resource granularity Δ _RS , or the UE receives Δ _RS , and the UE receives the scheduling bandwidth.

After that, the reference signal transmission resource and the first signal transmission resource in a scheduling bandwidth of one TTI can be determined according to Δ _RS , and there is no multi-user shared reference signal transmission resource, so scheduling is convenient, regardless of the time domain symbol included in the TTI. The number of the number can be flexibly scheduled and allocated for the reference signal transmission resource and the first signal transmission resource in the short TTI, and no additional signaling overhead is required. Moreover, in the prior art, when multiple users share the fixed-position reference signal resources by frequency division multiplexing, the frequency offset may cause multi-user interference.

In one possible design, the UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, including:

The UE determines the symbol including the reference signal transmission resource, and the reference signal transmission resource is equally spaced

Resource particles, the first signal transmission resource is

Resource particles.

In a possible design, when Δ _{RS is} greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, all reference signal transmission resources on the symbol including the reference signal transmission resource are in the frequency domain. The intervals are equal. In this way, the accuracy of the frequency domain interpolation based channel estimation algorithm can be improved.

In one possible design, the UE transmits the first signal on a symbol including a reference signal transmission resource, including:

After performing fast Fourier transform FFT on the first signal, the UE sequentially maps to each resource particle in the first signal transmission resource in sequence;

The UE maps the reference signal in the frequency domain to the reference signal in the frequency domain in sequence to each resource particle in the reference signal transmission resource;

After the above mapping is completed, an inverse fast Fourier transform IFFT is performed to obtain a time domain signal to be transmitted.

After the FFT is performed on the first signal sent by the UE, the UE performs the FFT on the first signal transmission resource and the reference signal transmission resource in sequence with the reference signal in the frequency domain. IFFT is performed to get the time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

After the UE time-domain waveform period of the reference signal copy to obtain signal includes periodic cycles Δ _RS, Δ _RS signal containing periodic cycles multiplied by a frequency modulated signal;

The periodic signal multiplied by the frequency modulated signal is superimposed with the first signal, and then FFT, frequency mapping, and IFFT are sequentially performed to obtain a time domain signal to be transmitted.

In a possible design, before the periodic signal multiplied by the frequency modulated signal is superimposed with the first signal, the method further includes:

The first signal transmission resource is divided into N resource particle sets, and the resource granularity of the resource particles in each resource particle set is Δ _i ;

For each data bit corresponding to the resource particle set, before or after performing coding and constellation point modulation mapping, performing periodic replication to obtain a periodic signal including Δ _i cycles;

Multiplying a periodic signal corresponding to each resource particle set by a frequency modulation signal;

Superimposing all the signals multiplied by the frequency modulated signal to obtain and multiply the frequency modulated signal The first signal superimposed by the reference signal.

In one possible design, between different sets of resource particles, the resource granularity Δ _i is a multiple of 2 ^p , and p is an integer.

In one possible design, the frequency modulation signal is e ^jkwt , where w= ^2πΔf , Δf is the frequency spacing between resource particles, and k is the resource particle in the resource particle set according to the low frequency to high frequency within the scheduling bandwidth. The number corresponding to the position where the order first appears, k=0, 1, 2, . . . n.

Through the above possible design, the time-domain waveform of the reference signal is periodically copied by the UE to obtain a signal including Δ _RS periods, multiplied by a frequency modulation signal, and then the reference signal multiplied by the frequency modulation signal is first. The signals are superimposed, and then FFT, frequency mapping, and IFFT are sequentially performed to obtain a time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

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

Transmitting reference signal transmission resource granularity Δ _RS and scheduling bandwidth to user equipment UE

So that the UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and the first signal transmission resource is a data signal The transmission resource or the control signal transmission resource receives the reference signal and the first signal sent by the UE on the symbol including the reference signal transmission resource, and the first signal is a data signal or a control signal. Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

Resource particles, Δ _RS can be

In a third aspect, an embodiment of the present invention provides a user equipment, including: a receiving module, configured to acquire a reference signal transmission resource granularity Δ _RS and a scheduling bandwidth.

Processing module for Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and the first signal transmission resource is a data signal a transmission resource or a control signal transmission resource, and a sending module, configured to send the reference signal and the first signal on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal. Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

Resource particles, Δ _RS can be

Divisible.

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

Determining the symbol containing the reference signal transmission resource, the reference signal transmission resources are equally spaced

Resource particles, the first signal transmission resource is

Resource particles.

In a possible design, when the Δ _{RS is} greater than or equal to 4 and the number of symbols including the reference signal transmission resource in one TTI is multiple, all reference signal transmission resources on the symbol including the reference signal transmission resource are The intervals in the frequency domain are equal.

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

After performing fast Fourier transform FFT on the first signal, sequentially mapping to each resource particle in the first signal transmission resource in sequence;

Mapping the frequency domain reference signals sequentially to each resource particle in the reference signal transmission resource;

In one possible design, the sending module includes:

a period copying unit, configured to periodically copy the time domain waveform of the reference signal to obtain a periodic signal including Δ _RS periods;

a frequency modulation unit for multiplying a periodic signal including Δ _RS periods by a frequency modulation signal;

The superposition transform unit is configured to superimpose the periodic signal multiplied by the frequency modulation signal with the first signal, and then perform FFT, frequency mapping, and IFFT sequentially to obtain a time domain signal to be transmitted.

In one possible design, it also includes:

a signal processing unit, configured to divide the first signal transmission resource into N resource particle sets, and resource particles in each resource particle set, before the superposition transform unit superimposes the periodic signal multiplied by the frequency modulation signal with the first signal The resource granularity is Δ _i ;

The signals multiplied by the frequency modulated signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulated signal.

The benefits of the access network device provided by the foregoing third aspect and the possible designs of the foregoing third aspect can be seen in the beneficial effects of the first aspect and the possible designs of the first aspect, and are not Let me repeat.

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 _RS and a scheduling bandwidth to the user equipment UE

So that the UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the 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 control signal transmission resource. And a receiving module, configured to receive a reference signal and a first signal that are sent by the UE on a symbol that includes a reference signal transmission resource, where the first signal is a data signal or a control signal. Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

Resource particles, Δ _RS can be

Divisible.

For the beneficial effects of the access network device provided by the foregoing fourth aspect, reference may be made to the beneficial effects brought about by the foregoing second aspect, and details are not described herein again.

In a fifth aspect, an embodiment of the present invention provides a user equipment, including: a receiver, configured to acquire a reference signal transmission resource granularity Δ _RS and a scheduling bandwidth.

Processor for Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and the first signal transmission resource is a data signal a transmission resource or a control signal transmission resource, the transmitter, configured to transmit the reference signal and the first signal on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal. Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

Resource particles, Δ _RS can be

Divisible.

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

Resource particles, the first signal transmission resource is

Resource particles.

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

In one possible design, the transmitter includes:

a period replicator that periodically replicates a time domain waveform of the reference signal to obtain a periodic signal including Δ _RS periods;

a frequency modulator multiplying a periodic signal comprising Δ _RS cycles by a frequency modulated signal;

The superimposing transformer superimposes the periodic signal multiplied by the frequency modulated signal with the first signal, and then sequentially performs FFT, frequency mapping and IFFT to obtain a time domain signal to be transmitted.

In a possible design, the transmitter further includes:

a signal processor, configured to divide the first signal transmission resource into N resource particle sets, and resources in each resource particle set, before the superposition converter superimposes the periodic signal multiplied by the frequency modulation signal with the first signal The particle's resource granularity is Δ _i ;

The beneficial effects of the access network device provided by the above fifth aspect and the possible designs of the foregoing fifth aspect can be seen in the benefits of the first aspect and the possible designs of the first aspect, and are not Let me repeat.

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

a transmitter, configured to send a reference signal transmission resource granularity Δ _RS and a scheduling bandwidth to the user equipment UE

So that the UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the 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 control signal transmission resource. And 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. Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

Resource particles, Δ _RS can be

Divisible.

For the beneficial effects of the access network device provided by the foregoing sixth aspect, refer to the beneficial effects brought about by the foregoing second aspect, and details are not described herein again.

The uplink resource allocation and signal modulation method provided by the embodiment of the present invention is based on the Δ _RS and the scheduling bandwidth by the UE.

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. Within the symbol containing the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and then the UE transmits the reference signal and the first signal on the symbol including the reference signal transmission resource. It is only necessary to preset the reference signal transmission resource granularity Δ _RS , or the UE receives Δ _RS , and the UE receives the scheduling bandwidth.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic diagram of a TTI signal transmission structure in which a reference signal is shared by a cyclic delay method in the prior art;

2 is a schematic flowchart of Embodiment 1 of an uplink resource allocation and signal modulation method according to the present invention;

3 is a schematic diagram of a reference signal transmission resource and a first signal transmission resource determined by a UE when the TTI is different in the first embodiment of the uplink resource allocation and signal modulation method according to the present invention;

Reference signal transmission resource Figure 4 of the present embodiment, uplink resource allocation and the modulation method of a signal in the l _TTI is equal to 2, Δ _RS invention is equal to 6 and the UE determining a first transmission resource schematic signal;

FIG. 5 is a schematic flowchart diagram of Embodiment 1 of a signal modulation method according to the present invention;

6 is a schematic diagram of a scheduling bandwidth and a transmission resource for determining a reference signal in Embodiment 1 of the signal modulation method according to the present invention;

7 is a schematic diagram of a process of a method for modulating a reference signal and a first signal in Embodiment 1 of a signal modulation method according to the present invention;

8 is a schematic flowchart of Embodiment 2 of a signal modulation method according to the present invention;

FIG. 9 is a schematic diagram of a transmission resource for transmitting an RS and a transmission resource for transmitting a first signal, which are determined in Embodiment 2 of a signal modulation method according to the present invention;

10 is a schematic diagram of resource mapping in the frequency domain before and after REG aggregation in Embodiment 2 of the signal modulation method according to the present invention;

11 is a schematic diagram of a processing procedure after REG aggregation in Embodiment 2 of the signal modulation method according to the present invention;

FIG. 12 is a schematic structural diagram of Embodiment 1 of a user equipment according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of Embodiment 2 of a user equipment according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of Embodiment 3 of a user equipment according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of Embodiment 1 of an access network device according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of Embodiment 4 of a user equipment according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of Embodiment 5 of a user equipment according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of Embodiment 6 of a user equipment according to an embodiment of the present disclosure;

FIG. 19 is a schematic structural diagram of Embodiment 2 of an access network device according to an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the 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, for example, a Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA). System, Wideband Code Division Multiple Access Wireless (WCDMA) system, General Packet Radio Service (GPRS) system, LTE system, Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, referred to as: UMTS) and the like, the embodiment of the present invention is not limited.

The technical solution of the embodiment of the present invention is mainly applied to an LTE system. In the communication system to which the embodiment of the present invention is applied, the network element involved is an access network device (base station) and a UE.

The uplink resource allocation and signal modulation method and device provided by the embodiments of the present invention can be used in a scenario of data transmission of a service with high real-time requirements and relatively sensitive time delay, how to implement reference signal transmission resources in a short TTI and the first Flexible scheduling and allocation of signal transmission resources, the first signal transmission resource is a data signal transmission resource or a control signal transmission resource, and does not require additional signaling overhead. The short TTI in the embodiment of the present invention refers to a case where the number of time domain symbols included in the TTI includes 14 time domain symbols is less than 14, for example, the TTI is 7, 4, or 2. Below with reference to the drawing The technical solutions provided by the embodiments of the present invention are described in detail.

2 is a schematic flowchart of Embodiment 1 of an uplink resource allocation and signal modulation method according to the present invention. As shown in FIG. 2, the method includes:

S101. The UE acquires a reference signal transmission resource granularity Δ _RS and a scheduling bandwidth.

The Δ _RS may be preset or may be sent by a base station or other network element to schedule bandwidth.

Can be sent by a base station or other network element, Δ _RS is an integer greater than 1, Δ _RS and scheduling bandwidth

When they are sent by the base station or other network elements, they may be carried in the same scheduling information. For each UE, the Δ _RSs may be the same or different.

S102. The UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within the TTI, and the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed.

The first signal transmission resource is a data signal transmission resource or a control signal transmission resource. Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particles belongs to a reference signal transmission resource.

Resource particles, Δ _RS can be

Divisible. The resource particle occupies one symbol in the time domain and occupies one frequency resource unit in the frequency domain. Therefore, within one symbol, the number of scheduled resource particles is

Specifically, the reference signal transmission resource and the first signal transmission resource are in a scheduling bandwidth.

The intra-frequency division multiplexing, the reference signal transmission resource may be one symbol occupying the TTI, or may be multiple symbols occupying the TTI. In the symbol including the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequencies. For division multiplexing, the number of symbols of the TTI may be any integer less than 14. The reference signal transmission resource granularity Δ _RS may be preset, and may be set according to different services Δ _RS , and the setting rule of Δ _RS is capable of being

Divisible. E.g

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

At this time, the setting rule of Δ _RS is divisible by 12, so Δ _RS ∈ {2, 3, 4, 6, 8, 12}.

Further, the UE is based on Δ _RS and

Determining the symbol of the reference signal transmission resource in the TTI, the reference signal transmission resources are equally spaced

Resource particles, the first signal transmission resource is

Resource particles.

The above allocation scheme will be described below with a specific example in conjunction with the accompanying drawings.

3 is a schematic diagram of a reference signal transmission resource and a first signal transmission resource determined by a UE when the TTI is different in the first embodiment of the uplink resource allocation and signal modulation method according to the present invention. The 14 symbols of one subframe are taken as an example, for example, the TTI is 1 _TTI . The OFDM (SC-FDMA) symbol, as shown in FIG. 3, l _TTI ∈ {1, 2, 4}, Δ _RS are set to 2, 3, 4, respectively. l When the _TTI is 1, and the Δ _{RS is} set to 2, it indicates that one resource particle of the UE per resource particle belongs to the reference signal transmission resource, and the UE receives the scheduling bandwidth.

After, according to Δ _RS and

Determining a reference signal transmission resource within the scheduling bandwidth, the resource particles except the determined reference signal transmission resource in the scheduling bandwidth are all the first signal transmission resource, and the reference signal transmission resource and the first signal transmission resource in the scheduling bandwidth determined by the UE As shown in Figure 3 (a). l When the _TTI is 1, and Δ _{RS is} set to 3, it indicates that one resource particle of each of the three resource particles belongs to the reference signal transmission resource, and the UE receives the scheduling bandwidth.

After, according to Δ _RS and

The reference signal transmission resources and the first signal transmission resources within the determined scheduling bandwidth are as shown in FIG. 3(b). l When the _TTI is 1, and Δ _{RS is} set to 4, it indicates that one resource particle of each of the four resource particles belongs to the reference signal transmission resource, and the UE receives the scheduling bandwidth.

After, according to Δ _RS and

The reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth are determined as shown in FIG. 3(c). l _TTI is 2, Δ _RS are provided to the UE determines 2,3,4 reference signal transmission bandwidth and resources scheduling a first signal transmission resource are shown in FIG 3 (d), (e) , (f) shown in FIG. l _TTI to 4, Δ _RS are provided to the UE determines 2,3,4 reference signal transmission bandwidth and resources scheduling a first signal transmission resource are shown in FIG 3 (g), (h) , (i) , the The reference signal transmission resource and the first signal transmission resource shown in the figure are frequency-division multiplexed in the first symbol of the TTI, and the remaining three symbols are all the first signal transmission resource for transmitting the first signal. It should be noted that l _TTI can be any integer less than 14, and the corresponding Δ _RS setting rule can be

Divisible, the UE can receive the scheduling bandwidth

The reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth are then determined. FIG. 3 is only an example. The reference signal transmission resource finally determined by the UE may be one symbol intra-frequency division multiplexing within the TTI, or may be multiple intra-symbol frequency division multiplexing within the TTI. Specifically, it can be set according to the requirements of the actual transmission scenario.

In particular, when Δ _{RS is} greater than or equal to 4, TTI is greater than or equal to 2 symbols, and there are multiple symbols including reference signal transmission resources in one TTI, all reference signal transmission resources on the symbol including the reference signal transmission resource are required. Meet the equal interval in the frequency domain. FIG 4 Example uplink resource allocation and the modulation method of the present invention, a signal in the l _TTI is equal to 2, Δ _RS schematic reference signal and the transmission resource the UE determines a first transmission resource signal is equal to 6, as shown, l _TTI in FIG. 4 Equal to 2, Δ _RS is equal to 6, and within 2 symbols, the interval of the reference signal transmission resources in the frequency domain is constant to 2 resource particles. In this way, the accuracy of the frequency domain interpolation based channel estimation algorithm can be improved.

S103. The UE sends the reference signal and the first signal on a symbol that includes a reference signal transmission resource.

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

Correspondingly, the method further includes: the base station or other network element receiving the reference signal and the first signal sent by the UE on the symbol including the reference signal transmission resource.

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

The uplink resource allocation and signal modulation method provided by this embodiment is performed by the UE according to Δ _RS and scheduling bandwidth.

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

As a first embodiment, FIG. 5 is a schematic flowchart of Embodiment 1 of a signal modulation method according to the present invention. As shown in FIG. 5, the method of this implementation includes:

S201. The UE performs fast Fourier transform (FFT) on the transmitted first signal, and then sequentially maps to each resource particle in the first signal transmission resource.

S202. The UE sequentially maps reference signals in the frequency domain to each resource particle in the reference signal transmission resource.

S203. After completing the mapping, perform an inverse fast Fourier transform (IFFT) to obtain a time domain signal to be transmitted.

In this embodiment, after the FFT is performed on the first signal sent by the UE, the reference signal is used. And sequentially mapping to each of the first signal transmission resource and the reference signal transmission resource in sequence, and finally performing IFFT to obtain a time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

Due to the uplink resource allocation method shown in FIG. 2 of the present invention, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed in a certain symbol or some symbols of the TTI, and therefore the UE includes the reference. When the reference signal and the first signal are transmitted in the symbol of the resource particle in the signal transmission resource, if the signal is modulated and transmitted according to the existing method, the peak value may be relatively high, and thus, preferably, to minimize the maximum The peak-to-average ratio can be modulated in the manner shown in FIG. 5 in the embodiment of the present invention, and modulated into a time domain signal and then transmitted. When resource particles within a symbol belong to the first signal transmission resource, they can be transmitted according to the existing modulation transmission method.

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

In this embodiment,

For example,

That is, the scheduling bandwidth is 6 resource blocks (RBs). FIG. 6 is a schematic diagram of the scheduling bandwidth and the transmission resource used for transmitting the reference signal in the first embodiment of the signal modulation method according to the present invention. As shown in FIG. 6, the UE according to Δ _RS and Scheduling bandwidth

Determining that the reference signal transmission resources within one symbol of the TTI are equally spaced

Resource particles for transmitting reference signals (RS) to determine the remaining

The resource particles are the first signal transmission resource within one symbol of the TTI for transmitting the first signal. After determining the reference signal transmission resource and the first signal transmission resource, the UE sends the reference signal and the first signal to perform modulation on the determined reference signal transmission resource and the first signal transmission resource, and FIG. 7 is implemented by the signal modulation method according to the present invention. A schematic diagram of a method for modulating a reference signal and a first signal in the first example, as shown in FIG. 7, first, after performing FFT on the transmitted first signal, the UE sequentially maps to each resource particle in the first signal transmission resource in order. The reference signals in the frequency domain are sequentially mapped to each resource particle in the reference signal transmission resource. The reference signal in the frequency domain may be FFT-transformed into the frequency domain by the FFT in the time domain, or may directly generate the reference signal sequence in the frequency domain. After the above mapping is completed, IFFT is performed to obtain a time domain signal to be transmitted.

As a second embodiment, FIG. 8 is a schematic flowchart of a second embodiment of a signal modulation method according to the present invention. As shown in FIG. 8, the method in this embodiment may include:

After S301, UE time-domain waveform of the periodic reference signal copy to obtain signal includes periodic cycles Δ _RS, Δ _RS signal containing periodic cycles multiplied by a frequency modulated signal.

S302: superimpose the periodic signal multiplied by the frequency modulation signal with the first signal, and then perform FFT, frequency mapping, and IFFT sequentially to obtain a time domain signal to be transmitted.

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

S303. The first signal transmission resource is divided into N resource particle sets, and the resource granularity of the resource particles in each resource particle set is Δ _i .

S304,, for each resource element corresponding to the set of data bits, and constellation points before encoding or after modulation mapping, periodic replication, to obtain a periodic signal comprising Δ _i cycles.

S305. Multiply a periodic modulation signal corresponding to each resource particle set by a frequency modulation signal.

S306. Superimpose all the signals multiplied by the frequency modulation signal to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal.

Wherein, the Δ _i of the resource particles in the different resource particle sets satisfy a multiple relationship of 2 ^p , and p is an integer. That is to say, Δ _i in each resource particle set may be the same or different. But to satisfy the multiple of 2 ^p .

Specifically, the frequency modulation signal is e ^jkwt , where w= ^2πΔf , Δf is the frequency interval between the resource particles, and k is the resource particle number, that is, the resource particles in the resource particle set are in the scheduling bandwidth according to the low frequency to the high frequency. The number corresponding to the position where the order first appears, k=0, 1, 2, . . . n.

In this embodiment, the UE periodically filters the time domain waveform of the reference signal to obtain a signal including Δ _RS periods, multiplies the frequency modulation signal by the UE, and then multiplies the reference signal and the first signal after the frequency modulation signal. Superimposition, followed by FFT, frequency mapping and IFFT, to obtain the time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

Due to the uplink resource allocation method shown in FIG. 2 of the present invention, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed in a certain symbol or some symbols of the TTI, and therefore the UE includes the reference. When the reference signal and the first signal are transmitted in the symbol of the resource particle in the signal transmission resource, if the signal is modulated and transmitted according to the existing method, the peak value may be relatively high, and therefore, preferably, in order to minimize the maximum The peak-to-average ratio can be modulated in the manner shown in FIG. 8 in the embodiment of the present invention, and modulated into a time domain signal and then transmitted. When resource particles within a symbol belong to the first signal transmission resource, they can be transmitted according to the existing modulation transmission method.

In this embodiment,

For example,

That is, the scheduling bandwidth is 4 resource blocks (RBs), and FIG. 9 is a schematic diagram of grouping the transmission resources for transmitting the RS and the transmission resources for transmitting the first signal, which are determined in the second embodiment of the signal modulation method of the present invention, As shown in Figure 8, 4 RBs, Δ _RS = 4, a total of 48 resource particles are scheduled, and the UE according to Δ _RS and scheduling bandwidth

Resource particles for transmitting RS, and the remaining 36 resource particles are used to transmit the first signal. After determining the reference signal transmission resource and the first signal transmission resource, the UE sends the reference signal and the first signal on the determined reference signal transmission resource and the first signal transmission resource, where the UE is in the resource particle including the reference signal transmission resource Modulation is performed when the reference signal and the first signal are transmitted within the symbol.

First, the 12 resource particles used for transmitting the RS are divided into one resource particle set (the RS shown in FIG. 8), and the 36 resource particles used for transmitting the first signal are divided into three resource particle sets, and FIG. 8 shows REG1 and REG2. , REG3. Each resource particle set includes 12 resource particles, and the resource particle size Δ _i =4 of the resource particles in each resource particle set is the same as the Δ _RS of the resource particles in the resource particle set corresponding to the _RS , that is, every 4 One of the resource particles belongs to the reference signal transmission resource (Figure RS shows RS), one resource particle belongs to REG1, and one resource particle belongs to REG2, and every 4 resources are included in each of the four resource particles. There is one resource particle in the particle that belongs to REG3.

Then, the two groups of REGs are aggregated into a group. FIG. 10 is a schematic diagram of resource mapping in the frequency domain before and after REG aggregation in the second embodiment of the signal modulation method according to the present invention. As shown in FIG. 10, FIG. 10 only shows for clarity. A schematic diagram of the aggregation of 12 resource particles, the REG2 and REG3 are aggregated into a new resource particle set REG2+REG3, and the resource granularity of the resource particles in the resource particle set REG2 or REG3 before the aggregation is Δ _i1 = 4, new The resource particle size of the resource particle set REG2+REG3 is Δ _i2 =2. As shown in FIG. 9 , one resource particle of each of the two resource particles belongs to REG2+REG3, Δ _i1 =2Δ _i2 . After the aggregation, it becomes three resource particle sets REG1, REG2+REG3, and RS.

FIG. 11 is a schematic diagram of a processing procedure after REG aggregation in the second embodiment of the signal modulation method according to the present invention. As shown in FIG. 11, three resource particle sets REG1, REG2+REG3, and RS are obtained by aggregation, and then the time domain waveform of the reference signal is obtained. Performing periodic replication to obtain a periodic signal including Δ _RS periods; performing period replication before encoding or constelling the data bits corresponding to each resource particle set in the first signal transmission resource, and obtaining Δ _i The periodic periodic signal, Δ _i is the resource granularity of the resource particles in each resource particle set, Δ _REG1 =4 for _REG1 , Δ _REG2+REG3 =2 for _REG2+REG3 , Δ _RS =4 for _RS , ie, for resource particles Before or after the data bits corresponding to the set REG1 are encoded and constellation point modulation mapped, periodic replication is performed to obtain a periodic signal including 4 periods; before the data bits corresponding to the resource particle set REG2+REG3 are encoded and constellation point modulation mapping is performed or After that, cycle replication is performed to obtain a periodic signal including 2 cycles; periodic replication of the time domain waveform of the RS is performed to obtain a week containing 4 cycles Period signal.

Then, respectively, the periodic signal corresponding to each resource particle set is multiplied by a frequency modulation signal e ^jkwt , where w= ^2πΔf , Δf is the frequency interval between resource particles, and k is the resource particle in the resource particle set within the scheduling bandwidth. The number corresponding to the position where the first occurrence occurs from the low frequency to the high frequency, k=0, 1, 2, . . . n. As shown in FIG. 11, the periodic signal corresponding to REG1 is multiplied by e ^jkwt , k=0; the periodic signal corresponding to RS is multiplied by e ^jkwt , k=2; the periodic signal corresponding to REG2+REG3 is multiplied by e ^jkwt , k=1.

Finally, all the signals multiplied by the frequency modulation signal are superimposed, and the superposed signals are sequentially subjected to FFT, frequency mapping and IFFT to obtain a time domain signal to be transmitted.

FIG. 12 is a schematic structural diagram of Embodiment 1 of a user equipment according to an embodiment of the present invention. As shown in FIG. 12, the user equipment includes: a receiving module 11, a processing module 12, and a sending module 13, where the receiving module 11 is configured to obtain a reference. Signal transmission resource granularity Δ _RS and scheduling bandwidth

Processing module 12 is operative to use Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the 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 control signal transmission resource. The transmitting module 13 is configured to send the reference signal and the first signal on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal.

Where Δ _{RS is} used to indicate that one resource particle per Δ _RS resource particle belongs to a reference signal transmission resource,

Resource particles, Δ _RS can be

Divisible.

Specifically, the processing module 12 is specifically configured to: determine, on the symbol that includes the reference signal transmission resource, the reference signal transmission resource is equally spaced

Resource particles, the first signal transmission resource is

Resource particles.

Further, when Δ _{RS is} greater than or equal to 4, and there are a plurality of symbols including reference signal transmission resources in one TTI, the reference signal transmission resources on all symbols including the reference signal transmission resources are equally spaced in the frequency domain.

The user equipment shown in FIG. 12 is used to perform the foregoing method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.

The user equipment provided by this embodiment passes the processing module according to Δ _RS and scheduling bandwidth.

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. Within the symbol including the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and then the transmitting module transmits the reference signal and the first signal on the symbol including the reference signal transmission resource. It is only necessary to preset the reference signal transmission resource granularity Δ _RS , or the receiving module receives Δ _RS , and the receiving module receives the scheduling bandwidth.

Afterwards, the processing module can determine the reference signal transmission resource and the first signal transmission resource in the scheduling bandwidth of one TTI according to Δ _RS , and there is no multi-user shared reference signal transmission resource, so the scheduling is convenient, regardless of the time included in the TTI. The number of domain symbols is sufficient to implement flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources in a short TTI without additional signaling overhead. Moreover, in the prior art, when multiple users share the fixed-position reference signal resources by frequency division multiplexing, the frequency offset may cause multi-user interference.

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

After performing fast Fourier transform FFT on the first signal, it is sequentially mapped to each resource particle in the first signal transmission resource. The reference signals in the frequency domain are sequentially mapped to each resource particle in the reference signal transmission resource. The reference signal in the frequency domain may be FFT-transformed into the frequency domain by the FFT in the time domain, or may directly generate the reference signal sequence in the frequency domain. After the above mapping is completed, an inverse fast Fourier transform IFFT is performed to obtain a time domain signal to be transmitted.

After the FFT is performed on the first signal that is sent by the sending module, it 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 IFFT is sent to be sent. Time domain signal. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

FIG. 13 is a schematic structural diagram of Embodiment 2 of a user equipment according to an embodiment of the present invention. As shown in FIG. 13, on the basis of the user equipment shown in FIG. 12, the sending module 13 further includes: a periodic copying unit 131, and a frequency. The modulating unit 132 and the superimposing transform unit 133 are configured to periodically copy the time domain waveform of the reference signal to obtain a periodic signal including Δ _RS periods. The frequency modulation unit 132 is configured to multiply a periodic signal including Δ _RS cycles by one frequency modulation signal. The superposition transform unit 133 is configured to superimpose the periodic signal multiplied by the frequency modulation signal with the first signal, and then sequentially perform FFT, frequency mapping, and IFFT to obtain a time domain signal to be transmitted.

FIG. 14 is a schematic structural diagram of Embodiment 3 of a user equipment according to an embodiment of the present invention. As shown in FIG. 14, on the basis of the user equipment shown in FIG. 13, the sending module 13 further includes: a signal processing unit 134. The signal processing unit 134 is configured to divide the first signal transmission resource into N resource particle sets, the resources in each resource particle set, before the superposition transform unit 133 superimposes the periodic signal multiplied by the frequency modulation signal with the first signal. The resource granularity of the particle is Δ _i , and the data bits corresponding to each resource particle set are periodically copied before or after encoding and constellation point modulation mapping, and a periodic signal including Δ _i cycles is obtained for each resource. The periodic signal corresponding to the set of particles is multiplied by a frequency modulated signal, and all the signals multiplied by the frequency modulated signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulated signal.

Further, between different resource particle sets, the resource granularity Δ _i is a multiple of 2 ^p , and p is an integer.

Optionally, the frequency modulation signal is e ^jkwt , where w= ^2πΔf , Δf is a frequency interval between resource particles, and k is a resource particle in the resource particle set for the first time in a scheduling bandwidth according to a sequence from low frequency to high frequency. The number corresponding to the position that appears, k=0,1,2....n.

The user equipment shown in FIG. 13 and FIG. 14 is used to perform the foregoing method embodiment shown in FIG. 8, and the implementation principle and technical effects are similar, and details are not described herein again.

The user equipment shown in FIG. 13 and FIG. 14 periodically copies the time domain waveform of the reference signal by the transmitting module to obtain a signal including Δ _RS periods, multiplies by a frequency modulation signal, and then multiplies the frequency modulation signal. The reference signal is superimposed with the first signal, and then FFT, frequency mapping and IFFT are sequentially performed to obtain a time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

FIG. 15 is a schematic structural diagram of Embodiment 1 of an access network device according to an embodiment of the present invention. As shown in FIG. 15, the access network device includes: a sending module 21 and a receiving module 22, where the sending module 21 is configured to provide a user The device UE transmits the reference signal transmission resource granularity Δ _RS and the scheduling bandwidth.

So that the UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the 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 control signal transmission resource. The receiving module 22 is configured to receive a reference signal and a first signal that are sent by the UE on a symbol that includes a reference signal transmission resource, where the first signal is a data signal or a control signal.

Resource particles, Δ _RS can be

Divisible.

The access network device provided in this embodiment sends the Δ _RS and the scheduling bandwidth to the UE through the sending module.

So that the UE is based on Δ _RS and

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. Within the symbol including the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and then the receiving module receives the reference signal and the first signal transmitted by the UE on the symbol including the reference signal transmission resource. There is no multi-user shared reference signal transmission resource, so scheduling is convenient. Regardless of the number of time domain symbols included in the TTI, flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources in a short TTI can be realized. No additional signaling overhead is required. Moreover, in the prior art, when multiple users share the fixed-position reference signal resources by frequency division multiplexing, the frequency offset may cause multi-user interference.

FIG. 16 is a schematic structural diagram of Embodiment 4 of a user equipment according to an embodiment of the present disclosure. As shown in FIG. 16, the user equipment includes: a receiver 31, a processor 32, and a transmitter 33, where the receiver 31 is configured to obtain a reference. Signal transmission resource granularity Δ _RS and scheduling bandwidth

The processor 32 is configured to use Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the 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 control signal transmission resource. The transmitter 33 is configured to transmit the reference signal and the first signal on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal.

Resource particles, Δ _RS can be

Divisible.

Specifically, the processor 32 is specifically configured to: determine, on the symbol that includes the reference signal transmission resource, the reference signal transmission resource is equally spaced

Resource particles, the first signal transmission resource is

Resource particles.

Further, when Δ _{RS is} greater than or equal to 4, and there are a plurality of symbols including reference signal transmission resources in one TTI, all reference signal transmission resources on the symbols including the reference signal transmission resources are equally spaced in the frequency domain.

The user equipment shown in FIG. 16 is used to perform the foregoing method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.

The user equipment provided by this embodiment is configured by the processor according to Δ _RS and scheduling bandwidth.

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. Within the symbol containing the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and then the transmitter transmits the reference signal and the first signal on the symbol including the reference signal transmission resource. It is only necessary to preset the reference signal transmission resource granularity Δ _RS , or the receiver receives Δ _RS , and the receiver receives the scheduling bandwidth.

After that, the processor can determine the reference signal transmission resource and the first signal transmission resource in the scheduling bandwidth of one TTI according to Δ _RS , and there is no multi-user shared reference signal transmission resource, so the scheduling is convenient, regardless of the time included in the TTI. The number of domain symbols is sufficient to implement flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources in a short TTI without additional signaling overhead. Moreover, in the prior art, when multiple users share the fixed-position reference signal resources by frequency division multiplexing, the frequency offset may cause multi-user interference.

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

After the FFT is performed on the first signal sent by the transmitter, it 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 IFFT is sent to be sent. Time domain signal. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

FIG. 17 is a schematic structural diagram of Embodiment 5 of a user equipment according to an embodiment of the present invention. As shown in FIG. 17, on the basis of the user equipment shown in FIG. 16, the transmitter 33 further includes: a period replicator 331, and a frequency. The modulator 332 and the superimposing transformer 333, wherein the period replicator 331 is configured to periodically copy the time domain waveform of the reference signal to obtain a periodic signal including Δ _RS periods. The frequency modulator 332 is for multiplying a periodic signal comprising Δ _RS cycles by a frequency modulated signal. The superimposing transformer 333 is for superimposing the periodic signal multiplied by the frequency modulated signal with the first signal, and then sequentially performing FFT, frequency mapping, and IFFT to obtain a time domain signal to be transmitted.

FIG. 18 is a schematic structural diagram of Embodiment 6 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, the transmitter 33 further includes: a signal processor 334. The signal processor 334 is configured to divide the first signal transmission resource into N resource particle sets, the resources in each resource particle set, before the superposition transformer 333 superimposes the periodic signal multiplied by the frequency modulation signal with the first signal. The resource granularity of the particle is Δ _i , and the data bits corresponding to each resource particle set are periodically copied before or after encoding and constellation point modulation mapping, and a periodic signal including Δ _i cycles is obtained for each resource. The periodic signal corresponding to the set of particles is multiplied by a frequency modulated signal, and all the signals multiplied by the frequency modulated signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulated signal.

The user equipment shown in FIG. 17 and FIG. 18 is used to perform the foregoing method embodiment shown in FIG. 8. The implementation principle and technical effects are similar, and details are not described herein again.

The user equipment shown in FIG. 17 and FIG. 18 periodically copies the time domain waveform of the reference signal by the transmitter to obtain a signal including Δ _RS periods, multiplies by a frequency modulation signal, and then multiplies the frequency modulation signal. The reference signal is superimposed with the first signal, and then FFT, frequency mapping and IFFT are sequentially performed to obtain a time domain signal to be transmitted. Therefore, the peak-to-average ratio of the signal after frequency division multiplexing can be minimized, and the uplink single carrier characteristic can be maintained.

FIG. 19 is a schematic structural diagram of Embodiment 2 of an access network device according to an embodiment of the present disclosure. As shown in FIG. 19, the access network device includes: a transmitter 41 and a receiver 42, where the transmitter 41 is used for a user. The device UE transmits the reference signal transmission resource granularity Δ _RS and the scheduling bandwidth.

So that the UE is based on Δ _RS and

Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the 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 control signal transmission resource. The receiver 42 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 particles, Δ _RS can be

Divisible.

The access network device provided in this embodiment sends the Δ _RS and the scheduling bandwidth to the UE through the transmitter.

So that the UE is based on Δ _RS and

A reference signal transmission resource and a first signal transmission resource within the TTI are determined. Within the symbol containing the reference signal transmission resource, the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed, and then the receiver receives the reference signal and the first signal transmitted by the UE on the symbol including the reference signal transmission resource. There is no multi-user shared reference signal transmission resource, so scheduling is convenient. Regardless of the number of time domain symbols included in the TTI, flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources in a short TTI can be realized. No additional signaling overhead is required. Moreover, in the prior art, when multiple users share the fixed-position reference signal resources by frequency division multiplexing, the frequency offset may cause multi-user interference.

The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

One of ordinary skill in the art will appreciate that various aspects of the present application, or possible implementations of various aspects, can be embodied as a system, method, or computer program product. Accordingly, aspects of the present application, or possible implementations of various aspects, may be in the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, etc.), or a combination of software and hardware aspects, They are collectively referred to herein as "circuits," "modules," or "systems." Furthermore, aspects of the present application, or possible implementations of various aspects, may take the form of a computer program product, which is a computer readable program code stored in a computer readable medium.

The computer readable medium can be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium includes, 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), Erase programmable read-only memory (EPROM or flash memory), optical fiber, portable read-only memory (CD-ROM).

A processor in a computer reads computer readable program code stored in a computer readable medium such that the processor can perform the steps specified in each step of the flowchart, or in a combination of steps Functional action; means for implementing a functional action defined in each block of the block diagram or a combination of blocks.

The computer readable program code can execute entirely on the user's local computer, partly on the user's local computer, as a separate software package, partly on the user's local computer and partly on the remote computer, or entirely on the remote computer or Executed on the server. It should also be noted that in some alternative implementations, the functions noted in the various steps in the flowcharts or in the blocks in the block diagrams may not occur in the order noted. For example, two steps, or two blocks, shown in succession may be executed substantially concurrently or the blocks may be executed in the reverse order.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

An uplink resource allocation and signal modulation method, characterized in that:

User equipment UE acquires reference signal transmission resource granularity Δ RS and scheduling bandwidth

The UE according to Δ RS and
Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource being frequency division multiplexed, the first The signal transmission resource is a data signal transmission resource or a control signal transmission resource;

Transmitting, by the UE, 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;

Where Δ RS is used to indicate that one resource particle per Δ RS resource particles belongs to the reference signal transmission resource,
The unit is a frequency domain resource block, and each frequency domain resource block is included.
Resource particles, Δ RS can be
Divisible.
The method of claim 1 wherein said UE is based on Δ RS and
Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, including:

The UE determines a symbol including a reference signal transmission resource, and the reference signal transmission resource is equally spaced
Resource particles, the first signal transmission resource is
Resource particles.
The method according to claim 1 or 2, wherein when the Δ RS is greater than or equal to 4 and the number of symbols including the reference signal transmission resource in one TTI is plural, all reference signal transmissions on the symbol including the reference signal transmission resource Resources are equally spaced in the frequency domain.
The method according to claim 1 or 2 or 3, wherein the UE transmits the first signal on the symbol including the reference signal transmission resource, including:

After performing fast Fourier transform FFT on the first signal, the UE sequentially maps to each of the first signal transmission resources in sequence;

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

After the above mapping is completed, an inverse fast Fourier transform IFFT is performed to obtain a time domain signal to be transmitted.
Method according to claim 1 or 2 or 3, characterized in that said UE is included The first signal is transmitted on the symbol of the reference signal transmission resource, including:

After the UE, for the time domain waveform of the reference signal is periodic replication, comprising a periodic signal to obtain Δ RS cycles of the periodic signal comprises Δ RS cycles multiplied by a frequency modulated signal;

The periodic signal multiplied by the frequency modulated signal is superimposed with the first signal, and then FFT, frequency mapping, and IFFT are sequentially performed to obtain a time domain signal to be transmitted.
The method according to claim 5, before the superimposing the periodic signal multiplied by the frequency modulated signal with the first signal, further comprising:

The first signal transmission resource is divided into N resource particle sets, and the resource granularity of the resource particles in each resource particle set is Δ i ;

For each data bit corresponding to the resource particle set, before or after performing coding and constellation point modulation mapping, performing periodic replication to obtain a periodic signal including Δ i cycles;

Multiplying a periodic signal corresponding to each resource particle set by one of the frequency modulation signals;

The signals multiplied by the frequency modulated signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulated signal.
The method according to claim 6, wherein between different sets of resource particles, the resource granularity Δ i is a multiple of 2 p , and p is an integer.
The method according to any one of claims 5-7, wherein the frequency modulation signal is e jkwt , where w = 2π Δf, Δf is a frequency interval between resource particles, and k is a resource particle in the resource particle set The number corresponding to the position where the first occurrence occurs from the low frequency to the high frequency within the scheduling bandwidth, k=0, 1, 2, . . .
An uplink resource allocation and signal modulation method, characterized in that:

Transmitting reference signal transmission resource granularity Δ RS and scheduling bandwidth to user equipment UE
So that the UE is based on Δ RS and
Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource being frequency division multiplexed, the first The signal transmission resource is a data signal transmission resource or a control signal transmission resource;

Receiving 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;

Where Δ RS is used to indicate that one resource particle per Δ RS resource particles belongs to the reference signal transmission resource,
The unit is a frequency domain resource block, and each frequency domain resource block is included.
Resource particles, Δ RS can be
Divisible.
A user equipment, comprising:

Receiver for obtaining reference signal transmission resource granularity Δ RS and scheduling bandwidth

Processor for Δ RS and
Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource being frequency division multiplexed, the first The signal transmission resource is a data signal transmission resource or a control signal transmission resource;

a transmitter, 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;

Where Δ RS is used to indicate that one resource particle per Δ RS resource particles belongs to the reference signal transmission resource,
The unit is a frequency domain resource block, and each frequency domain resource block is included.
Resource particles, Δ RS can be
Divisible.
The user equipment according to claim 10, wherein the processor is specifically configured to:

Determining the symbol containing the reference signal transmission resource, the reference signal transmission resources are equally spaced
Resource particles, the first signal transmission resource is
Resource particles.
The user equipment according to claim 10 or 11, wherein when the Δ RS is greater than or equal to 4 and the number of symbols including the reference signal transmission resource in one TTI is plural, all reference signals on the symbol including the reference signal transmission resource The transmission resources are equally spaced in the frequency domain.
The user equipment according to claim 10 or 11 or 12, wherein the transmitter is specifically configured to:

Performing a fast Fourier transform FFT on the first signal, and sequentially mapping to each of the first signal transmission resources in sequence;

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

After the above mapping is completed, an inverse fast Fourier transform IFFT is performed to obtain a time domain signal to be transmitted.
The user equipment according to claim 10 or 11 or 12, wherein the transmitter comprises:

a period replicator, configured to periodically copy the time domain waveform of the reference signal to obtain a periodic signal including Δ RS periods;

a frequency modulator for multiplying the periodic signal including Δ RS cycles by a frequency modulation signal;

And a superposition converter for superimposing the periodic signal multiplied by the frequency modulation signal with the first signal, and then performing FFT, frequency mapping and IFFT sequentially to obtain a time domain signal to be transmitted.
The user equipment of claim 14, the transmitter further comprising:

a signal processor, configured to divide the first signal transmission resource into N resource particle sets, each resource particle, before the superposition converter superimposes the periodic signal multiplied by the frequency modulation signal with the first signal The resource granularity of the resource particles in the set is Δ i ;

For each data bit corresponding to the resource particle set, before or after performing coding and constellation point modulation mapping, performing periodic replication to obtain a periodic signal including Δ i cycles;

Multiplying a periodic signal corresponding to each resource particle set by one of the frequency modulation signals;

The signals multiplied by the frequency modulated signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulated signal.
The user equipment according to claim 15, wherein the resource granularity Δ i is a multiple of 2 p between different resource particle sets, and p is an integer.
The user equipment according to any one of claims 14-16, wherein the frequency modulation signal is e jkwt , where w= 2πΔf , Δf is a frequency interval between resource particles, and k is a resource particle in a resource particle set. The number corresponding to the position where the first occurrence occurs from the low frequency to the high frequency in the scheduling bandwidth, k=0, 1, 2, . . .
An access network device, comprising:

a transmitter, configured to send a reference signal transmission resource granularity Δ RS and a scheduling bandwidth to the user equipment UE
So that the UE is based on Δ RS and
Determining a reference signal transmission resource and a first signal transmission resource on a symbol including a reference signal transmission resource within a transmission time interval TTI, the reference signal transmission resource and the first signal transmission resource being frequency division multiplexed, the first The signal transmission resource is a data signal transmission resource or a control signal transmission resource;

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

Where Δ RS is used to indicate that one resource particle per Δ RS resource particles belongs to the reference signal transmission resource,
The unit is a frequency domain resource block, and each frequency domain resource block is included.
Resource particles, Δ RS can be
Divisible.