CN108713299B - Uplink resource allocation and signal modulation method and device - Google Patents

Abstract

Embodiments of the present invention provide a method and device for uplink resource allocation and signal modulation. The method includes: a UE obtains a reference signal transmission resource granularity _ΔRS and a scheduling bandwidth

According to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the transmission time interval TTI, and the reference signal transmission resource and the first signal transmission resource are frequency-division multiplexed. The UE transmits the reference signal and the first signal on symbols containing reference signal transmission resources. The method can realize flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources within a short TTI, and does not require additional signaling overhead.

Description

Uplink resource allocation and signal modulation method and device

technical field

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

Background technique

In the Long Term Evolution (Long Term Evolution, referred to as: LTE) system, the transmission of uplink services is based on base station scheduling. The basic time unit of scheduling is a subframe (subframe), and a subframe includes 14 time domain symbols (a subframe). equal to two slots). In the standards of LTE and LTE-A, a transmission time interval (Transmission Time Interval, TTI for short) 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 business models will be supported, and the ability to support low-latency and high-reliability services is an important direction for the evolution of 5G technology. Currently, in the evolution process of LTE, there has been research on providing some short TTIs with less than 14 time-domain symbols for some services with high real-time requirements and sensitive to delay to speed up data transmission.

In the prior art, for short TTI data transmission, the allocation of uplink resources is to divide an uplink TTI into a reference signal transmission symbol and a data signal or control signal transmission symbol set. The reference signal transmission symbol is used for transmission and the receiving end knows The reference signal used for channel estimation and channel measurement, and the data signal or control signal transmission symbol set is used to transmit data of user equipment (User Equipment, UE for short). The reference signal transmission symbol is a symbol at a fixed position (such as the 4th or 11th symbol), which is shared by multiple UEs, and the orthogonality of the reference signal is realized by means of cyclic delay or frequency division multiplexing. , symbols other than reference signal transmission symbols are used for data transmission. FIG. 1 is a schematic diagram of a TTI signal transmission structure in the prior art that adopts a cyclic delay method to share reference signals. As shown in FIG. 1 , one TTI is 4 symbols, and the demodulation reference signals (RS) of the TTIs of multiple UEs are located in In the common uplink Single Carrier Frequency Division Multiplex Access (Single Carrier Frequency Division Multiplex Access, SC-FDMA for short) symbol (the fourth symbol shown in FIG. 1 ), there are three UEs shown in FIG. -SCH1, UL-SCH2, UL-SCH3) respectively occupy different data signal or control signal transmission periods to send data signals or control signals, the RS is located in the fourth symbol, and the orthogonality of the reference signals is realized by means of cyclic delay.

In the above allocation method, the reference signal transmission symbols are shared by multiple UEs. Regardless of whether the cyclic delay method or the frequency division multiplexing method is used to realize the orthogonality of the reference signal, it is necessary to indicate different UEs through signaling, which will increase signaling. The overhead will also bring certain difficulties to the scheduling.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide 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 without additional signaling overhead.

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

UE根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源，UE在包含参考信号传输资源的符号上发送参考信号和第一信号，第一信号为数据信号或控制信号。其中，Δ_RS用于指示每Δ_RS个资源粒子中有一个资源粒子属于参考信号传输资源，

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。从而，只需预先设定参考信号传输资源粒度Δ_RS，或者UE接收Δ_RS，UE在接收到调度带宽

后，就可根据Δ_RS确定出一个TTI的调度带宽内的参考信号传输资源和第一信号传输资源，不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。The user equipment UE obtains the reference signal transmission resource granularity _ΔRS and the scheduling bandwidth

UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal The transmission resource or the control signal transmission resource, the UE sends 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. Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible. Therefore, it is only necessary to pre-set 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 within the scheduling bandwidth of a TTI can be determined according to _ΔRS . There is no multi-user shared reference signal transmission resource, so scheduling is convenient, regardless of the time domain symbols included in the TTI. Whatever the number, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be achieved without additional signaling overhead. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，包括：In one possible design, the UE is based on _ΔRS and

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

个资源粒子，第一信号传输资源为

个资源粒子。The UE determines that on the symbols including the reference signal transmission resources, the reference signal transmission resources are distributed at equal intervals

resource particles, the first signal transmission resource is

resource particles.

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

In a possible design, the UE sends the first signal on a symbol containing reference signal transmission resources, including:

After the UE performs fast Fourier transform (FFT) on the first signal, it is sequentially mapped to each resource element in the first signal transmission resource;

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

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

Through the above possible design, after the UE performs FFT on the transmitted first signal, it is mapped to each resource element in the first signal transmission resource and the reference signal transmission resource in sequence, together with the reference signal in the frequency domain, and finally Perform IFFT to get the time domain signal to be sent. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

In a possible design, the UE sends the first signal on a symbol containing reference signal transmission resources, including:

The UE performs periodic duplication of the time domain waveform of the reference signal, and after obtaining a periodic signal including _ΔRS cycles, multiplies the periodic signal including _ΔRS cycles by a frequency modulation signal;

The periodic signal multiplied by the frequency modulation signal is superimposed with the first signal, and then FFT, frequency mapping and IFFT are performed in sequence to obtain a time domain signal to be sent.

In a possible design, before adding the periodic signal multiplied by the frequency modulation signal and the first signal, the method further includes:

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

For the data bits corresponding to each resource element set, before or after coding and constellation point modulation and mapping, periodic duplication is performed to obtain a periodic signal containing Δ _i cycles;

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

All the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal.

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

In a possible design, the frequency modulation signal is e ^jkwt , where w=2πΔf, Δf is the frequency interval between resource elements, k is the resource element in the resource element set in the scheduling bandwidth according to the frequency from low frequency to high frequency The number corresponding to the first occurrence of the sequence, k=0, 1, 2....n.

Through the above possible design, the UE performs periodic duplication of the time domain waveform of the reference signal to obtain a signal containing _ΔRS cycles, multiplied by a frequency modulation signal, and then multiplied by the frequency modulation signal. The reference signal and the first The signals are superimposed, and then FFT, frequency mapping, and IFFT are performed in sequence to obtain the time-domain signal to be sent. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

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

以使UE根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源，接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号，第一信号为数据信号或控制信号。其中，Δ_RS用于指示每Δ_RS个资源粒子中有一个资源粒子属于参考信号传输资源，

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。从而，只需预先设定参考信号传输资源粒度Δ_RS，或者UE接收Δ_RS，UE在接收到调度带宽

后，就可根据Δ_RS确定出一个TTI的调度带宽内的参考信号传输资源和第一信号传输资源，不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。Sending reference signal transmission resource granularity _ΔRS and scheduling bandwidth to user equipment UE

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the 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. Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible. Therefore, it is only necessary to pre-set 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 within the scheduling bandwidth of a TTI can be determined according to _ΔRS . There is no multi-user shared reference signal transmission resource, so scheduling is convenient, regardless of the time domain symbols included in the TTI. Whatever the number, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be achieved without additional signaling overhead. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

处理模块，用于根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源，发送模块，用于在包含参考信号传输资源的符号上发送参考信号和第一信号，第一信号为数据信号或控制信号。其中，Δ_RS用于指示每Δ_RS个资源粒子中有一个资源粒子属于参考信号传输资源，

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

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

processing module for _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal A transmission resource or a control signal transmission resource, a sending module, configured to send a reference signal and a first signal on a symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal. Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

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

个资源粒子，第一信号传输资源为

个资源粒子。It is determined that the reference signal transmission resources are distributed at equal intervals on the symbols containing the reference signal transmission resources.

resource particles, the first signal transmission resource is

resource particles.

In a possible design, it also includes, when _ΔRS is greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, the reference signal transmission resources on all symbols including reference signal transmission resources, in 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, map it to each resource element in the first signal transmission resource in sequence;

Map the reference signal in the frequency domain to each resource element in the reference signal transmission resource in sequence;

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

In one possible design, the sending module includes:

a periodic duplication unit, used for duplicating the time domain waveform of the reference signal periodically to obtain a periodic signal including _ΔRS cycles;

a frequency modulation unit for multiplying a periodic signal containing _ΔRS cycles by a frequency modulation signal;

The superposition transformation unit is used for superimposing the periodic signal multiplied by the frequency modulation signal with the first signal, and then performing FFT, frequency mapping and IFFT in sequence to obtain the time domain signal to be sent.

In one possible design, also include:

The signal processing unit is configured to divide the first signal transmission resource into N resource particle sets before the superimposing transformation unit superimposes the periodic signal multiplied by the frequency modulation signal and the first signal, and the resource particles in each resource particle set are equal to each other. The resource granularity is Δ _i ;

For the data bits corresponding to each resource element set, before or after coding and constellation point modulation and mapping, periodic duplication is performed to obtain a periodic signal containing Δ _i periods;

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

All the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal.

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

In a possible design, the frequency modulation signal is e ^jkwt , where w=2πΔf, Δf is the frequency interval between resource elements, k is the resource element in the resource element set in the scheduling bandwidth according to the frequency from low frequency to high frequency The number corresponding to the first occurrence of the sequence, k=0, 1, 2....n.

The beneficial effects of the access network equipment provided by the third aspect and the possible designs of the third aspect can refer to the beneficial effects brought by the first aspect and the possible designs of the first aspect. Repeat.

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

以使UE根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源。接收模块，用于接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号，第一信号为数据信号或控制信号。其中，Δ_RS用于指示每Δ_RS个资源粒子中有一个资源粒子属于参考信号传输资源，

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。A sending module, configured to send the reference signal transmission resource granularity _ΔRS and the scheduling bandwidth to the user equipment UE

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal Transmission resources or control signal transmission resources. The receiving module is configured to receive the reference signal and the first signal sent by the UE on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal. Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

For the beneficial effects of the access network device provided in the fourth aspect above, reference may be made to the beneficial effects brought about by the second aspect, which will not be repeated here.

处理器，用于根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源，发送器，用于在包含参考信号传输资源的符号上发送参考信号和第一信号，第一信号为数据信号或控制信号。其中，Δ_RS用于指示每Δ_RS个资源粒子中有一个资源粒子属于参考信号传输资源，

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。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 _ΔRS and a scheduling bandwidth

processor for _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal A transmission resource or a control signal transmission resource, a transmitter, configured to transmit a reference signal and a first signal on a symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal. Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

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

个资源粒子，第一信号传输资源为

个资源粒子。It is determined that the reference signal transmission resources are distributed at equal intervals on the symbols containing the reference signal transmission resources.

resource particles, the first signal transmission resource is

resource particles.

In a possible design, it also includes, when _ΔRS is greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, the reference signal transmission resources on all symbols including reference signal transmission resources, in The intervals in the frequency domain are equal.

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

After performing fast Fourier transform (FFT) on the first signal, map it to each resource element in the first signal transmission resource in sequence;

Map the reference signal in the frequency domain to each resource element in the reference signal transmission resource in sequence;

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

In one possible design, the transmitter includes:

a period replicator, which periodically replicates the time domain waveform of the reference signal to obtain a periodic signal containing _ΔRS cycles;

a frequency modulator, multiplying a periodic signal containing _ΔRS cycles by a frequency modulation signal;

The superposition converter superimposes the periodic signal multiplied by the frequency modulation signal and the first signal, and then performs FFT, frequency mapping and IFFT in sequence to obtain the time domain signal to be sent.

In a possible design, the transmitter further includes:

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

For the data bits corresponding to each resource element set, before or after coding and constellation point modulation and mapping, periodic duplication is performed to obtain a periodic signal containing Δ _i cycles;

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

All the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal.

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

In a possible design, the frequency modulation signal is e ^jkwt , where w=2πΔf, Δf is the frequency interval between resource elements, k is the resource element in the resource element set in the scheduling bandwidth according to the frequency from low frequency to high frequency The number corresponding to the first occurrence of the sequence, k=0, 1, 2....n.

The beneficial effects of the access network equipment provided by the fifth aspect and the possible designs of the fifth aspect can refer to the beneficial effects brought by the first aspect and the possible designs of the first aspect. Repeat.

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

以使UE根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源。接收器，用于接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号，第一信号为数据信号或控制信号。其中，Δ_RS用于指示每Δ_RS个资源粒子中有一个资源粒子属于参考信号传输资源，

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。a transmitter, configured to send the reference signal transmission resource granularity _ΔRS and the scheduling bandwidth to the user equipment UE

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal Transmission resources or control signal transmission resources. The receiver is configured to receive the reference signal and the first signal sent by the UE on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal. Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

For the beneficial effects of the access network device provided in the sixth aspect, reference may be made to the beneficial effects brought about by the second aspect, which will not be repeated here.

确定TTI内的参考信号传输资源和第一信号传输资源。在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源频分复用，然后UE在包含参考信号传输资源的符号上发送参考信号和第一信号。只需预先设定参考信号传输资源粒度Δ_RS，或者UE接收Δ_RS，UE在接收到调度带宽

后，就可根据Δ_RS确定出一个TTI的调度带宽内的参考信号传输资源和第一信号传输资源，不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。The uplink resource allocation and signal modulation method provided by the embodiment of the present invention uses the UE according to _ΔRS and scheduling bandwidth.

Determine the reference signal transmission resource and the first signal transmission resource within the TTI. 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 then the UE transmits the reference signal and the first signal on the symbol containing 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

After that, the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth of a TTI can be determined according to _ΔRS . There is no multi-user shared reference signal transmission resource, so scheduling is convenient, regardless of the time domain symbols included in the TTI. Whatever the number, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be achieved without additional signaling overhead. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of a TTI signal transmission structure in the prior art that adopts a cyclic delay method to share a reference signal;

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

4 is a schematic diagram of reference signal transmission resources and first signal transmission resources determined by the UE when 1 _TTI is equal to 2 and _ΔRS is equal to 6 in Embodiment 1 of the uplink resource allocation and signal modulation method according to the present invention;

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

6 is a schematic diagram of scheduling bandwidth and determining transmission resources for transmitting reference signals in Embodiment 1 of the signal modulation method of the present invention;

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

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

9 is a schematic diagram of grouping determined transmission resources for transmitting RS and transmission resources for transmitting a first signal in Embodiment 2 of the signal modulation method of 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 of the present invention;

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

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

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

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

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

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

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

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

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

Detailed ways

In order to make the purposes, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solutions of the embodiments of the present invention can be applied to various communication systems of wireless cellular networks, such as: Global System of Mobile communication (GSM for short) system, Code Division Multiple Access (CDMA for short) system , Wideband Code Division Multiple Access (WCDMA for short) system, General Packet Radio Service (GPRS for short) system, LTE system, Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS for short), etc., The embodiments of the present invention are not limited.

The technical solutions of the embodiments of the present invention are mainly applied to the LTE system. In the communication system applied by the embodiments of the present invention, the network elements involved are access network devices (base stations) and UEs.

The method and device for uplink resource allocation and signal modulation proposed by the embodiments of the present invention can be used in the data transmission scenarios of some services with high real-time requirements and more sensitive to delay, how to realize the reference signal transmission resources in the short TTI and the first Flexible scheduling and allocation of signal transmission resources, the first signal transmission resources are data signal transmission resources or control signal transmission resources, and no additional signaling overhead is required. The short TTI in the embodiment of the present invention refers to that the number of included time domain symbols is less than 14 compared to the existing TTI including 14 time domain symbols, for example, the TTIs are 7, 4, and 2. The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 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 obtains the reference signal transmission resource granularity _ΔRS and the scheduling bandwidth

可以是基站或其他网元发送的，Δ_RS为大于1的整数，Δ_RS和调度带宽

都为基站或其他网元发送时，可以是携带在同一调度信息中，对于每一UE而言，Δ_RS可以是相同的，也可以是不同的。Among them, _ΔRS can be preset or sent by the base station or other network elements. The scheduling bandwidth

It can be sent by the base station or other network elements, Δ _RS is an integer greater than 1, Δ _RS and the scheduling bandwidth

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

确定TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用。S102, the UE according to Δ _RS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource in the TTI, and the reference signal transmission resource and the first signal transmission resource are frequency division multiplexed.

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。其中的资源粒子时域上占一个符号，频域上占一个频率资源单位，故在一个符号内，所调度的资源粒子数为

The first signal transmission resource is a data signal transmission resource or a control signal transmission resource. _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

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

内频分复用，参考信号传输资源可以是占用TTI的一个符号，也可以是占用TTI的多个符号，在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源是频分复用的，TTI的符号数可以是小于14的任意整数。参考信号传输资源粒度Δ_RS可以是预先设置好的，可以是根据不同业务设置Δ_RS，Δ_RS的设定规则是能够被

整除。例如

即就是给UE调度了4个频域资源块，在一个符号内所调度的资源粒子数为

此时，Δ_RS的设定规则是能够被12整除，因此Δ_RS∈{2，3，4，6，8，12}。Specifically, the reference signal transmission resource and the first signal transmission resource are within the scheduling bandwidth.

Inner frequency division multiplexing, the reference signal transmission resource may be one symbol occupying the TTI, or 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 the same frequency. For division multiplexing, the number of TTI symbols can be any integer less than 14. The reference signal transmission resource granularity Δ _RS can be preset, or Δ _{RS can be set according to different services, and the setting rule of Δ RS can} be

Divisible. E.g

That is, 4 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 that it is divisible by 12, so Δ _RS ∈ {2, 3, 4, 6, 8, 12}.

确定出TTI内包含参考信号传输资源的符号上，参考信号传输资源为等间隔分布的

个资源粒子，第一信号传输资源为

个资源粒子。Further, the UE according to _ΔRS and

It is determined that on the symbols containing the reference signal transmission resources in the TTI, the reference signal transmission resources are distributed at equal intervals

resource particles, the first signal transmission resource is

resource particles.

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

后，根据Δ_RS和

确定调度带宽内的参考信号传输资源，调度带宽内除确定的参考信号传输资源之外的资源粒子都是第一信号传输资源，UE确定的调度带宽内的参考信号传输资源和第一信号传输资源如图3(a)所示。l_TTI为1，Δ_RS设置为3时，指示UE每3个资源粒子中有一个资源粒子属于参考信号传输资源，UE接收到调度带宽

后，根据Δ_RS和

确定的调度带宽内的参考信号传输资源和第一信号传输资源如图3(b)所示。l_TTI为1，Δ_RS设置为4时，指示UE每4个资源粒子中有一个资源粒子属于参考信号传输资源，UE接收到调度带宽

后，根据Δ_RS和

确定调度带宽内的参考信号传输资源和第一信号传输资源如图3(c)所示。l_TTI为2，Δ_RS分别设置为2、3、4时UE确定调度带宽内的参考信号传输资源和第一信号传输资源分别如图3(d)、(e)、(f)所示。l_TTI为4，Δ_RS分别设置为2、3、4时UE确定调度带宽内的参考信号传输资源和第一信号传输资源分别如图3(g)、(h)、(i)所示，图中所示参考信号传输资源和第一信号传输资源在TTI的第一个符号内频分复用，余下的3个符号全部为第一信号传输资源，用于传输第一信号。需要说明的是，l_TTI可以是小于14的任意整数，对应的Δ_RS的设定规则是能够被

整除，UE都可在接收到调度带宽

后确定出调度带宽内的参考信号传输资源和第一信号传输资源。图3仅仅是示例，UE最终确定的参考信号传输资源可能是在TTI内的一个符号内频分复用，也可能是在TTI内的多个符号内频分复用。具体可根据实际传输场景的需求设定。3 is a schematic diagram of the reference signal transmission resource and the first signal transmission resource determined by the UE when the TTI is different in the first embodiment of the uplink resource allocation and signal modulation method according to the present invention, taking 14 symbols in a subframe as an example, for example, the TTI is 1 _TTI For an OFDM (SC-FDMA) symbol, as shown in Figure 3, l _TTI ∈ {1, 2, 4}, and _ΔRS is set to 2, 3, and 4, respectively. l When _TTI is 1 and _ΔRS is set to 2, it indicates that one resource element in every two resource elements of the UE belongs to the reference signal transmission resource, and the UE receives the scheduling bandwidth.

After that, according to _ΔRS and

Determine the reference signal transmission resources within the scheduling bandwidth, resource elements other than the determined reference signal transmission resources in the scheduling bandwidth are the first signal transmission resources, and the reference signal transmission resources and the first signal transmission resources within the scheduling bandwidth determined by the UE As shown in Figure 3(a). l When _TTI is 1 and _ΔRS is set to 3, it indicates that one resource element in every three resource elements of the UE belongs to the reference signal transmission resource, and the UE receives the scheduling bandwidth.

After that, according to _ΔRS and

The reference signal transmission resources and the first signal transmission resources within the determined scheduling bandwidth are shown in FIG. 3(b). l When _TTI is 1 and _ΔRS is set to 4, it indicates that one resource element in every four resource elements of the UE belongs to the reference signal transmission resource, and the UE receives the scheduling bandwidth.

After that, according to _ΔRS and

The reference signal transmission resources and the first signal transmission resources within the scheduling bandwidth are determined as shown in FIG. 3( c ). l When _TTI is 2 and _ΔRS is set to 2, 3, and 4, respectively, the UE determines the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth as shown in Figures 3(d), (e), and (f), respectively. l When _TTI is 4 and _ΔRS is set to 2, 3, and 4, respectively, the UE determines the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth as shown in Figures 3(g), (h), and (i), respectively. The reference signal transmission resources and the first signal transmission resources 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 resources for transmitting the first signal. It should be noted that l _TTI can be any integer less than 14, and the corresponding setting rule of _ΔRS is that it can be set by

Divided evenly, the UE can receive the scheduling bandwidth

Then, the reference signal transmission resources and the first signal transmission resources within the scheduling bandwidth are determined. FIG. 3 is just an example, and the reference signal transmission resource finally determined by the UE may be frequency division multiplexing within one symbol within the TTI, or may be frequency division multiplexing within multiple symbols within the TTI. Specifically, it can be set according to the needs of the actual transmission scenario.

In particular, when _ΔRS 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, the reference signal transmission resources on all symbols including reference signal transmission resources need to be Satisfy that the intervals in the frequency domain are equal. 4 is a schematic diagram of the reference signal transmission resource and the first signal transmission resource determined by the UE when l _TTI is equal to 2 and _ΔRS is equal to 6 in Embodiment 1 of the uplink resource allocation and signal modulation method according to the present invention, as shown in FIG. 4 , l _TTI is equal to 2, _ΔRS is equal to 6, and within 2 symbols, the interval of the reference signal transmission resources in the frequency domain is constant as 2 resource elements. In this way, the accuracy of the channel estimation algorithm based on frequency domain interpolation can be improved.

S103. The UE sends the reference signal and the first signal on the symbol including the reference signal transmission resource.

Wherein, the first signal is a data signal or a control signal.

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

Wherein, in S103, when the UE transmits the reference signal and the first signal in the symbol including the reference signal transmission resource, the existing method may be used for signal modulation.

确定TTI内的参考信号传输资源和第一信号传输资源。在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源频分复用，然后UE在包含参考信号传输资源的符号上发送参考信号和第一信号。只需预先设定参考信号传输资源粒度Δ_RS，或者UE接收Δ_RS，UE在接收到调度带宽

后，就可根据Δ_RS确定出一个TTI的调度带宽内的参考信号传输资源和第一信号传输资源，不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。In the uplink resource allocation and signal modulation method provided in this embodiment, the UE uses _ΔRS and scheduling bandwidth according to

Determine the reference signal transmission resource and the first signal transmission resource within the TTI. 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 then the UE transmits the reference signal and the first signal on the symbol containing 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

After that, the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth of a TTI can be determined according to _ΔRS . There is no multi-user shared reference signal transmission resource, so scheduling is convenient, regardless of the time domain symbols included in the TTI. Whatever the number, flexible scheduling and allocation of the reference signal transmission resources and the first signal transmission resources in the short TTI can be achieved without additional signaling overhead. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

Further, according to the uplink resource allocation method shown in FIG. 2, as 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 used: Both implementations perform signal modulation.

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

S201. After the UE performs a Fast Fourier Transform (Fast Fourier Transform, FFT for short) on the sent first signal, the UE maps the first signal to each resource element in the first signal transmission resource in sequence.

S202: The UE maps the reference signal in the frequency domain to each resource element in the reference signal transmission resource in sequence.

S203. After the above mapping is completed, perform an inverse fast Fourier transform (Inverse Fast Fourier Transform, IFFT for short) to obtain a time domain signal to be sent.

In this embodiment, after the UE performs FFT on the transmitted first signal, together with the reference signal, it is mapped to each resource element in the first signal transmission resource and the reference signal transmission resource in sequence, and finally IFFT is performed to obtain the desired signal. The transmitted time domain signal. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

Since the uplink resource allocation method shown in FIG. 2 of the present invention is adopted, the reference signal transmission resources and the first signal transmission resources are frequency-division multiplexed in a certain symbol or several symbols of the TTI. When the reference signal and the first signal are sent in the symbol of the resource element in the signal transmission resource, if the signal is modulated and sent according to the existing method, the peak-average ratio may be relatively high. The peak-to-average ratio can be modulated in the manner shown in FIG. 5 in this embodiment of the present invention, and is modulated into a time-domain signal and then sent. When all the resource elements in one symbol belong to the first signal transmission resource, they can be sent according to the existing modulation and sending method.

A specific example is used below to describe in detail the technical solutions of the above embodiments.

Δ_RS＝6，

为例，

即调度带宽为6个资源块(RB)，图6为本发明信号调制方法实施例一中调度带宽与确定出用于传输参考信号的传输资源示意图，如图6所示，UE根据Δ_RS和调度带宽

确定出TTI的一个符号内的参考信号传输资源为等间隔分布的

个资源粒子，用于传输参考信号(RS)，确定出剩下的

个资源粒子为TTI的一个符号内的第一信号传输资源，用于传输第一信号。确定出参考信号传输资源和第一信号传输资源之后，UE在确定出的参考信号传输资源和第一信号传输资源上发送参考信号和第一信号，进行调制，图7为本发明信号调制方法实施例一中参考信号与第一信号的调制方法过程示意图，如图7所示，首先UE对发送的第一信号进行FFT后，按顺序依次映射到第一信号传输资源中的每一资源粒子上，将频域的参考信号，按顺序依次映射到参考信号传输资源中的每一资源粒子上。所述频域的参考信号，可以为时域的参考信号序列经过FFT变换到频域，也可以在频域直接生成参考信号序列。完成上述映射后，进行IFFT得到要发送的时域信号。In this embodiment, with

_ΔRS =6,

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 resources determined for transmitting the reference signal in the first embodiment of the signal modulation method of the present invention. As shown in FIG. scheduling bandwidth

It is determined that the reference signal transmission resources in one symbol of the TTI are distributed at equal intervals

resource elements for transmitting reference signals (RS), determine the remaining

The resource elements are the first signal transmission resources within one symbol of the TTI, and are used to transmit the first signal. After determining the reference signal transmission resource and the first signal transmission resource, the UE transmits the reference signal and the first signal on the determined reference signal transmission resource and the first signal transmission resource, and performs modulation. FIG. 7 is the implementation of the signal modulation method of the present invention. A schematic diagram of the process of the modulation method of the reference signal and the first signal in Example 1, as shown in FIG. 7 , first, after the UE performs FFT on the transmitted first signal, it is mapped to each resource element in the first signal transmission resource in sequence. , and map the reference signal in the frequency domain to each resource element in the reference signal transmission resource in sequence. The reference signal in the frequency domain may be a reference signal sequence in the time domain transformed into the frequency domain by FFT, or the reference signal sequence may be directly generated in the frequency domain. After the above mapping is completed, IFFT is performed to obtain the time domain signal to be sent.

As a second implementation manner, FIG. 8 is a schematic flowchart of Embodiment 2 of the signal modulation method of the present invention. As shown in FIG. 8 , the method of this embodiment may include:

S301. The UE performs periodic duplication of the time domain waveform of the reference signal, and after obtaining a periodic signal including _ΔRS cycles, multiplies the periodic signal including _ΔRS cycles by a frequency modulation signal.

S302. Superimpose the periodic signal multiplied by the frequency modulation signal with the first signal, and then perform FFT, frequency mapping and IFFT in sequence to obtain a time domain signal to be sent.

Specifically, before superimposing the reference signal multiplied by the frequency modulation signal and the first signal, the method further includes:

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

S304: Perform periodic duplication on the data bits corresponding to each resource element set before or after performing coding and constellation point modulation and mapping to obtain a periodic signal including _Δi periods.

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

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

Specifically, the frequency modulated signal is e ^jkwt , where w=2πΔf, Δf is the frequency interval between resource elements, and k is the sequence number of the resource elements, that is, the resource elements in the resource element set are in the scheduling bandwidth according to the frequency from low frequency to high frequency. The number corresponding to the first occurrence of the sequence, k=0, 1, 2....n.

In this embodiment, the UE performs periodic duplication of the time domain waveform of the reference signal to obtain a signal including _ΔRS cycles, and then multiplies it by a frequency modulation signal, and then multiplies the reference signal multiplied by the frequency modulation signal and the first signal. After superposition, FFT, frequency mapping and IFFT are performed in sequence to obtain the time domain signal to be sent. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

Since the uplink resource allocation method shown in FIG. 2 of the present invention is adopted, the reference signal transmission resources and the first signal transmission resources are frequency-division multiplexed in a certain symbol or several symbols of the TTI. When the reference signal and the first signal are sent within the symbol of the resource element in the signal transmission resource, if the signal is modulated and sent according to the existing method, the peak average may be relatively high. The peak-to-average ratio can be modulated in the manner shown in FIG. 8 in this embodiment of the present invention, and then modulated into a time-domain signal and sent. When all the resource elements in one symbol belong to the first signal transmission resource, they can be sent according to the existing modulation and sending method.

A specific example is used below to describe in detail the technical solutions of the above embodiments.

Δ_RS＝4，

为例，

即调度带宽为4个资源块(RB)，图9为本发明信号调制方法实施例二中将确定出的用于传输RS的传输资源和用于传输第一信号的传输资源进行分组的示意图，如图8所示，4个RB，Δ_RS＝4，一共调度48个资源粒子，UE根据Δ_RS和调度带宽

确定出TTI的一个符号内的参考信号传输资源为等间隔分布的

个资源粒子，用于传输RS，剩下的36个资源粒子用于传输第一信号。确定出参考信号传输资源和第一信号传输资源之后，UE在确定出的参考信号传输资源和第一信号传输资源上发送参考信号和第一信号，UE在包含参考信号传输资源中的资源粒子的符号内发送参考信号和第一信号时，进行调制。In this embodiment, with

_ΔRS = 4,

For example,

That is, the scheduling bandwidth is 4 resource blocks (RBs), and 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 Embodiment 2 of the signal modulation method of the present invention, As shown in Figure 8, 4 RBs, _ΔRS = 4, a total of 48 resource elements are scheduled, and the UE schedules the bandwidth according to the _ΔRS and the scheduling bandwidth.

It is determined that the reference signal transmission resources in one symbol of the TTI are distributed at equal intervals

1 resource element is used for transmitting RS, and the remaining 36 resource elements are used 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 on the determined reference signal transmission resource and the first signal transmission resource, and the UE sends the reference signal and the first signal on the determined reference signal transmission resource and the first signal transmission resource. Modulation is performed when the reference signal and the first signal are transmitted within the symbol.

First, the 12 resource elements used for transmitting RS are divided into one resource element set (RS is shown in FIG. 8 ), and the 36 resource elements used for transmitting the first signal are divided into three resource element sets, and REG1 and REG2 are shown in FIG. 8 . , 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 ΔRS of the resource particles in the resource particle set corresponding to the _RS , that is, every 4 Among the resource elements, one resource element belongs to the reference signal transmission resource (RS is shown in FIG. 9), one resource element in every four resource elements belongs to REG1, one resource element in every four resource elements belongs to REG2, and every four resource elements belong to REG2. There is one resource particle in the particle that belongs to REG3.

Next, the two groups of REGs are aggregated into one group. FIG. 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 of the present invention, as shown in FIG. 10 . For the sake of clarity, FIG. 10 only shows A schematic diagram of the aggregation of 12 resource elements is shown, and REG2 and REG3 are aggregated into a new resource element set REG2+REG3. Compared with the resource particle set REG2 or REG3 before the aggregation, the resource granularity of the resource elements in REG2 or REG3 is Δ _i1 =4, the new The resource granularity of the resource elements in the resource element set REG2+REG3 is Δ _i2 =2. As shown in FIG. 9 , one resource element in every 2 resource elements belongs to REG2+REG3, and Δ _i1 =2Δ _i2 . After aggregation, it becomes three resource element sets REG1, REG2+REG3 and RS.

FIG. 11 is a schematic diagram of the processing process after REG aggregation in Embodiment 2 of the signal modulation method of the present invention. As shown in FIG. 11 , three resource element sets REG1, REG2+REG3 and RS are obtained by aggregation. Then, the time domain waveform of the reference signal is analyzed. Perform periodic duplication to obtain a periodic signal containing Δ _RS periods; before or after encoding and constellation point modulation mapping of the data bits corresponding to each resource element set in the first signal transmission resource, perform periodic duplication to obtain Δ _i Periodic periodic signal, Δ _i is the resource granularity of resource elements in each resource element set, Δ _REG1 = 4 for REG1, Δ _{REG2 + REG3} = 2 for REG2+REG3, Δ _RS = 4 for RS, that is, for resource elements Before or after the data bits corresponding to the set REG1 are encoded and the constellation point modulation and mapping are performed, periodic replication is performed to obtain a periodic signal containing 4 cycles; before or after the data bits corresponding to the resource element set REG2+REG3 are encoded and the constellation point modulation and mapping are performed or After that, perform periodic duplication to obtain a periodic signal containing 2 periods; perform periodic duplication of the time domain waveform of the RS to obtain a periodic signal containing 4 periods.

Next, multiply the periodic signal corresponding to each resource element set by a frequency modulation signal e ^jkwt , where w=2πΔf, Δf is the frequency interval between resource elements, and k is the resource element in the resource element set within the scheduling bandwidth The number corresponding to the first occurrence of the sequence from low frequency to 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, superimpose all the signals multiplied by the frequency modulated signal, and perform FFT, frequency mapping and IFFT on the superimposed signals in sequence to obtain the time domain signal to be sent.

处理模块12用于根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源。发送模块13用于在包含参考信号传输资源的符号上发送参考信号和第一信号，第一信号为数据信号或控制信号。FIG. 12 is a schematic structural diagram of Embodiment 1 of a user equipment provided by 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 used to obtain a reference Signal transmission resource granularity _ΔRS and scheduling bandwidth

The processing module 12 is used for processing according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the 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.

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

个资源粒子，第一信号传输资源为

个资源粒子。Specifically, the processing module 12 is specifically configured to: determine that on the symbol including the reference signal transmission resources, the reference signal transmission resources are distributed at equal intervals

resource particles, the first signal transmission resource is

resource particles.

Further, when _ΔRS is greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, the reference signal transmission resources on all symbols including reference signal transmission resources are equally spaced in the frequency domain.

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

确定TTI内的参考信号传输资源和第一信号传输资源。在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源频分复用，然后发送模块在包含参考信号传输资源的符号上发送参考信号和第一信号。只需预先设定参考信号传输资源粒度Δ_RS，或者接收模块接收Δ_RS，接收模块在接收到调度带宽

后，处理模块就可根据Δ_RS确定出一个TTI的调度带宽内的参考信号传输资源和第一信号传输资源，不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。The user equipment provided in this embodiment uses the processing module according to the _ΔRS and the scheduling bandwidth.

Determine the reference signal transmission resource and the first signal transmission resource within the TTI. In 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 sending module transmits the reference signal and the first signal on the symbol including the reference signal transmission resource. It is only necessary to pre-set the reference signal transmission resource granularity Δ _RS , or the receiving module receives Δ _RS , and the receiving module receives the scheduling bandwidth after receiving the

After that, the processing module can determine the reference signal transmission resource and the first signal transmission resource within the scheduling bandwidth of one TTI according to _ΔRS . There is no multi-user shared reference signal transmission resource, so scheduling is more convenient, regardless of the time included in the TTI. Regardless of the number of domain symbols, flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources within a short TTI can be achieved without additional signaling overhead. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

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

After the fast Fourier transform (FFT) is performed on the first signal, the first signal is sequentially mapped to each resource element in the transmission resource of the first signal. The reference signals in the frequency domain are sequentially mapped to each resource element in the reference signal transmission resources. The reference signal in the frequency domain may be a reference signal sequence in the time domain transformed into the frequency domain by FFT, or the reference signal sequence may be directly generated in the frequency domain. After the above mapping is completed, inverse fast Fourier transform IFFT is performed to obtain the time domain signal to be sent.

After FFT is performed on the first signal sent by the sending module, together with the reference signal in the frequency domain, it is mapped to each resource element in the first signal transmission resource and the reference signal transmission resource in sequence, and finally IFFT is performed to obtain the information to be sent. time domain signal. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

FIG. 13 is a schematic structural diagram of the second embodiment of the user equipment according to the 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: The modulation unit 132 and the superposition transformation unit 133, wherein the period duplication unit 131 is configured to perform period duplication on the time domain waveform of the reference signal to obtain a period signal containing _ΔRS periods. The frequency modulation unit 132 is used for multiplying the periodic signal including _ΔRS cycles by a frequency modulation signal. The superposition transformation unit 133 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 in sequence to obtain the time domain signal to be sent.

FIG. 14 is a schematic structural diagram of Embodiment 3 of the user equipment according to the 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 element sets before the superimposing and transforming unit 133 superimposes the periodic signal multiplied by the frequency modulation signal with the first signal, and the resources in each resource element set are The resource granularity of the particle is Δ _i . For the data bits corresponding to each resource particle set, before or after coding and constellation point modulation and mapping, periodic replication is performed to obtain a periodic signal containing Δ _i periods. The periodic signal corresponding to the particle set is multiplied by a frequency modulation signal, and all the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal.

Further, among different resource particle sets, the resource granularity _Δi is a multiple of 2p, and ^p is an integer.

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

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

In the user equipment shown in Figure 13 and Figure 14, the time domain waveform of the reference signal is periodically copied by the sending module to obtain a signal containing _ΔRS cycles, and then multiplied by a frequency modulation signal, and then multiplied by 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 the time-domain signal to be sent. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

以使UE根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源。接收模块22用于接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号，第一信号为数据信号或控制信号。FIG. 15 is a schematic structural diagram of the first embodiment 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 used to send a message to a user The equipment UE sends reference signal transmission resource granularity _ΔRS and scheduling bandwidth

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal Transmission resources or control signal transmission resources. The receiving module 22 is configured to receive the reference signal and the first signal sent by the UE on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal.

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

以使UE根据Δ_RS和

确定TTI内的参考信号传输资源和第一信号传输资源。在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源频分复用，然后接收模块接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号。不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。The access network device provided in this embodiment sends the _ΔRS and the scheduling bandwidth to the UE through the sending module

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource within the TTI. In 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 sent by the UE on the symbol including the reference signal transmission resource. There are no multi-user shared reference signal transmission resources, so scheduling is more 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 achieved. No additional signaling overhead is required. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

处理器32用于根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源。发送器33用于在包含参考信号传输资源的符号上发送参考信号和第一信号，第一信号为数据信号或控制信号。FIG. 16 is a schematic structural diagram of Embodiment 4 of user equipment according to an embodiment of the present invention. As shown in FIG. 16 , the user equipment includes: a receiver 31, a processor 32, and a transmitter 33, where the receiver 31 is used to obtain a reference Signal transmission resource granularity _ΔRS and scheduling bandwidth

The processor 32 is used to base the _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal Transmission resources or control signal transmission resources. The transmitter 33 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.

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

个资源粒子，第一信号传输资源为

个资源粒子。Specifically, the processor 32 is specifically configured to: determine that on the symbol including the reference signal transmission resources, the reference signal transmission resources are distributed at equal intervals

resource particles, the first signal transmission resource is

resource particles.

Further, when _ΔRS is greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, the reference signal transmission resources on all symbols including reference signal transmission resources are equally spaced in the frequency domain.

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

确定TTI内的参考信号传输资源和第一信号传输资源。在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源频分复用，然后发送器在包含参考信号传输资源的符号上发送参考信号和第一信号。只需预先设定参考信号传输资源粒度Δ_RS，或者接收器接收Δ_RS，接收器在接收到调度带宽

后，处理器就可根据Δ_RS确定出一个TTI的调度带宽内的参考信号传输资源和第一信号传输资源，不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。The user equipment provided in this embodiment uses the processor to schedule bandwidth according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource within the TTI. 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 then the transmitter transmits the reference signal and the first signal on the symbol containing the reference signal transmission resource. It is only necessary to pre-set 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 within the scheduling bandwidth of one TTI according to _ΔRS . There is no multi-user shared reference signal transmission resource, so scheduling is more convenient, regardless of the time included in the TTI. Regardless of the number of domain symbols, flexible scheduling and allocation of reference signal transmission resources and first signal transmission resources within a short TTI can be achieved without additional signaling overhead. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

Further, as a preferred embodiment of the present invention, the transmitter 33 is specifically used for:

After the fast Fourier transform (FFT) is performed on the first signal, the first signal is sequentially mapped to each resource element in the transmission resource of the first signal. The reference signals in the frequency domain are sequentially mapped to each resource element in the reference signal transmission resources. The reference signal in the frequency domain may be a reference signal sequence in the time domain transformed into the frequency domain by FFT, or the reference signal sequence may be directly generated in the frequency domain. After the above mapping is completed, inverse fast Fourier transform IFFT is performed to obtain the time domain signal to be sent.

After performing FFT on the first signal sent by the transmitter, together with the reference signal in the frequency domain, it is mapped to each resource element in the first signal transmission resource and the reference signal transmission resource in sequence, and finally IFFT is performed to obtain the information to be sent. time domain signal. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

FIG. 17 is a schematic structural diagram of Embodiment 5 of 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 , a frequency The modulator 332 and the superposition converter 333, wherein the period replicator 331 is used to perform period duplication on the time domain waveform of the reference signal to obtain a period signal containing _ΔRS periods. The frequency modulator 332 is used to multiply a periodic signal containing _ΔRS cycles by a frequency modulated signal. The superposition converter 333 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 in sequence to obtain the time domain signal to be sent.

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 element sets before the superposition converter 333 superimposes the periodic signal multiplied by the frequency modulation signal with the first signal, and the resources in each resource element set are The resource granularity of the particle is Δ _i . For the data bits corresponding to each resource particle set, before or after coding and constellation point modulation and mapping, periodic replication is performed to obtain a periodic signal containing Δ _i periods. The periodic signal corresponding to the particle set is multiplied by a frequency modulation signal, and all the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal.

Further, among different resource particle sets, the resource granularity _Δi is a multiple of 2p, and ^p is an integer.

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

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

In the user equipment shown in Fig. 17 and Fig. 18, the transmitter performs periodic duplication of the time domain waveform of the reference signal to obtain a signal containing _ΔRS cycles, multiplied by a frequency modulation signal, and then multiplied by 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 the time-domain signal to be sent. Therefore, the peak-to-average ratio of the frequency-division multiplexed signal can be reduced to the greatest extent, and the uplink single-carrier characteristics can be maintained.

以使UE根据Δ_RS和

确定传输时间间隔TTI内、包含参考信号传输资源的符号上的参考信号传输资源和第一信号传输资源，参考信号传输资源和第一信号传输资源频分复用，第一信号传输资源为数据信号传输资源或控制信号传输资源。接收器42用于接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号，第一信号为数据信号或控制信号。FIG. 19 is a schematic structural diagram of Embodiment 2 of an access network device according to an embodiment of the present invention. As shown in FIG. 19 , the access network device includes: a transmitter 41 and a receiver 42 , where the transmitter 41 is used to send a message to a user The equipment UE sends reference signal transmission resource granularity _ΔRS and scheduling bandwidth

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the 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 the data signal Transmission resources or control signal transmission resources. The receiver 42 is configured to receive the reference signal and the first signal sent by the UE on the symbol including the reference signal transmission resource, where the first signal is a data signal or a control signal.

的单位是频域资源块，每个频域资源块中包含

个资源粒子，Δ_RS能够被

整除。Among them, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divisible.

以使UE根据Δ_RS和

确定TTI内的参考信号传输资源和第一信号传输资源。在包含参考信号传输资源的符号内，参考信号传输资源和第一信号传输资源频分复用，然后接收器接收UE在包含参考信号传输资源的符号上发送的参考信号和第一信号。不存在多用户共享参考信号传输资源，因此调度比较方便，不论TTI所包含的时域符号个数是多少，均可实现短TTI内参考信号传输资源和第一信号传输资源的灵活调度与分配，不需要额外的信令开销。且避免了现有技术中多用户通过频分复用共享固定位置的参考信号资源时，频偏会产生多用户干扰的问题。The access network device provided in this embodiment sends the _ΔRS and the scheduling bandwidth to the UE through the transmitter

so that the UE according to _ΔRS and

Determine the reference signal transmission resource and the first signal transmission resource within the TTI. 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 then the receiver receives the reference signal and the first signal sent by the UE on the symbol containing the reference signal transmission resource. There are no multi-user shared reference signal transmission resources, so scheduling is more 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 achieved. No additional signaling overhead is required. In addition, the problem of multi-user interference caused by frequency offset when multiple users share reference signal resources at a fixed location through frequency division multiplexing in the prior art is avoided.

Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.

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 various 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, where These 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 refers to computer readable program code stored on a computer readable medium.

The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. Computer-readable storage media include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or devices, or any suitable combination of the foregoing, such as random access memory (RAM), read only memory (ROM), memory Erase programmable read only memory (EPROM or flash memory), optical fiber, portable read only memory (CD-ROM).

The 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 combination of steps in the flowchart; A device that operates the functions 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 execute on the server. It should also be noted that, in some alternative implementations, the functions noted in the steps in the flowcharts, or blocks in the block diagrams, 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.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these 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 also intended to include these modifications and variations.

Claims (18)

1. A method for uplink resource allocation and signal modulation, comprising: The user equipment UE obtains the reference signal transmission resource granularity _ΔRS and the scheduling bandwidth

The UE according to _ΔRS and

Determining reference signal transmission resources and first signal transmission resources on symbols including reference signal transmission resources within the transmission time interval TTI, where the reference signal transmission resources and the first signal transmission resources are frequency-division multiplexed, and the first signal transmission resources The signal transmission resources are data signal transmission resources or control signal transmission resources; The UE sends 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, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divide; And, the _ΔRS is an integer greater than 1. 2. The method according to claim 1, wherein the UE is based on _ΔRS and

Determining the reference signal transmission resource and the first signal transmission resource on the symbol including the reference signal transmission resource within the transmission time interval TTI, including: The UE determines that on the symbols including the reference signal transmission resources, the reference signal transmission resources are distributed at equal intervals

resource particles, the first signal transmission resource is

resource particles. 3. The method according to claim 1 or 2, wherein when _ΔRS is greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, the reference signal on all symbols including reference signal transmission resources is Signal transmission resources are equally spaced in the frequency domain. 4. The method according to claim 1, wherein the UE sends the first signal on a symbol including a reference signal transmission resource, comprising: After the UE performs fast Fourier transform (FFT) on the first signal, it is sequentially mapped to each resource element in the first signal transmission resource; The UE maps the reference signal in the frequency domain to each resource element in the reference signal transmission resource in sequence; After the above mapping is completed, inverse fast Fourier transform IFFT is performed to obtain the time domain signal to be sent. 5. The method according to claim 1, wherein the UE sends the first signal on a symbol including a reference signal transmission resource, comprising: The UE performs periodic duplication of the time domain waveform of the reference signal to obtain a periodic signal including _ΔRS cycles, and then multiplies the periodic signal including _ΔRS cycles by a frequency modulation signal; The periodic signal multiplied by the frequency modulated signal is superimposed on the first signal, and then FFT, frequency mapping and IFFT are sequentially performed to obtain a time domain signal to be sent. 6. The method according to claim 5, before superimposing the periodic signal multiplied by the frequency modulation signal and the first signal, further comprising: dividing the first signal transmission resource into N resource particle sets, and the resource granularity of the resource particles in each resource particle set is Δ _i ; For the data bits corresponding to each resource element set, before or after coding and constellation point modulation and mapping, periodic duplication is performed to obtain a periodic signal containing Δ _i periods; respectively multiplying the periodic signal corresponding to each resource particle set by one of the frequency modulation signals; All the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal. 7 . The method according to claim 6 , wherein, among different resource particle sets, the resource granularity Δ _i is a multiple of 2 ^p , and p is an integer. 8 . 8. The method according to claim 5, wherein the frequency modulation signal is e ^jkwt , wherein w=2πΔf, Δf is the frequency interval between resource elements, and k is the resource element in the resource element set within the scheduling bandwidth According to the number corresponding to the first occurrence of the sequence from low frequency to high frequency, k=0, 1, 2....n. 9. A method for uplink resource allocation and signal modulation, comprising: Sending reference signal transmission resource granularity _ΔRS and scheduling bandwidth to user equipment UE

so that the UE according to _ΔRS and

Determining reference signal transmission resources and first signal transmission resources on symbols including reference signal transmission resources within the transmission time interval TTI, where the reference signal transmission resources and the first signal transmission resources are frequency-division multiplexed, and the first signal transmission resources The signal transmission resources are data signal transmission resources or control signal transmission resources; 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; Wherein, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divide; And, the _ΔRS is an integer greater than 1. 10. A user equipment, comprising: Receiver for obtaining reference signal transmission resource granularity _ΔRS and scheduling bandwidth

processor for according to _ΔRS and

Determining reference signal transmission resources and first signal transmission resources on symbols including reference signal transmission resources within the transmission time interval TTI, where the reference signal transmission resources and the first signal transmission resources are frequency-division multiplexed, and the first signal transmission resources The signal transmission resources are data signal transmission resources or control signal transmission resources; 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; Wherein, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divide; And, the _ΔRS is an integer greater than 1. 11. The user equipment according to claim 10, wherein the processor is specifically configured to: It is determined that the reference signal transmission resources are distributed at equal intervals on the symbols containing the reference signal transmission resources.

resource particles, the first signal transmission resource is

resource particles. 12. The user equipment according to claim 10 or 11, wherein when _ΔRS is greater than or equal to 4, and there are multiple symbols including reference signal transmission resources in one TTI, all symbols including reference signal transmission resources The reference signal transmission resources are equally spaced in the frequency domain. 13. The user equipment according to claim 10, wherein the transmitter is specifically configured to: After performing fast Fourier transform (FFT) on the first signal, map the first signal to each resource element in the first signal transmission resource in sequence; mapping the reference signal in the frequency domain to each resource element in the reference signal transmission resource in sequence; After the above mapping is completed, inverse fast Fourier transform IFFT is performed to obtain the time domain signal to be sent. 14. The user equipment according to claim 10, wherein the transmitter comprises: a period replicator, configured to periodically replicate the time-domain waveform of the reference signal to obtain a periodic signal containing _ΔRS cycles; a frequency modulator for multiplying the periodic signal containing _ΔRS cycles by a frequency modulation signal; The superposition converter is used for superimposing the periodic signal multiplied by the frequency modulation signal and the first signal, and then performing FFT, frequency mapping and IFFT in sequence to obtain the time domain signal to be sent. 15. 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 before the superposition converter superimposes the periodic signal multiplied by the frequency modulation signal with the first signal, each resource particle The resource granularity of the resource particles in the set is Δ _i ; For the data bits corresponding to each resource element set, before or after coding and constellation point modulation and mapping, periodic duplication is performed to obtain a periodic signal containing Δ _i periods; respectively multiplying the periodic signal corresponding to each resource particle set by one of the frequency modulation signals; All the signals multiplied by the frequency modulation signal are superimposed to obtain a first signal superimposed with the reference signal multiplied by the frequency modulation signal. 16. The user equipment according to claim 15, wherein between different resource particle sets, the resource granularity _Δi is a multiple of 2p, and ^p is an integer. 17. The user equipment according to claim 14, wherein the frequency modulation signal is e ^jkwt , wherein w=2πΔf, Δf is the frequency interval between resource elements, and k is the resource element in the resource element set in the scheduling bandwidth The number corresponding to the position that first appears in the sequence from low frequency to high frequency, k=0, 1, 2....n. 18. An access network device, comprising: a transmitter, configured to send the reference signal transmission resource granularity _ΔRS and the scheduling bandwidth to the user equipment UE

so that the UE according to _ΔRS and

Determining reference signal transmission resources and first signal transmission resources on symbols including reference signal transmission resources within the transmission time interval TTI, where the reference signal transmission resources and the first signal transmission resources are frequency-division multiplexed, and the first signal transmission resources The signal transmission resources are data signal transmission resources or control signal transmission resources; 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; Wherein, _ΔRS is used to indicate that one resource element in every _ΔRS resource element belongs to the reference signal transmission resource,

The unit of is the frequency domain resource block, each frequency domain resource block contains

resource particles, _ΔRS can be

Divide; And, the _ΔRS is an integer greater than 1.

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