CN108834432B - Uplink data sending and receiving method, user equipment and access network equipment - Google Patents

Abstract

The embodiments of the present invention relate to a method for transmitting and receiving uplink data, a user equipment, and an access network device. The method for transmitting uplink data includes: the user equipment determines that a frequency resource used for transmitting uplink data is a first frequency resource; The uplink data is sent on the first frequency resource, and a sequence of demodulation reference signals used to demodulate the uplink data is sent on the second frequency resource; the first frequency resource and the second frequency resource are in the frequency domain are not equal in size. It can be seen from the above that in this embodiment of the present invention, the user equipment sends uplink data and demodulation reference signals on different frequency resources, so that the access network equipment can use the demodulation reference signals received on different frequency resources to jointly estimate channel characteristics, The effect of channel estimation is good, and the demodulation performance of uplink data is effectively guaranteed.

Description

Uplink data sending and receiving method, user equipment and access network equipment

technical field

The present invention relates to the field of wireless communication, and in particular, to a method for transmitting and receiving uplink data, user equipment and access network equipment.

Background technique

Long Term Evolution (LTE) technology stipulates that the length of the radio frame on the air interface is 10ms, the radio frame of 10ms is divided into 10 subframes (subframes) of length 1ms, and each subframe consists of two subframes of length 0.5ms. Time slot (slot) composition. Before the user equipment sends uplink data to the access network equipment, the access network equipment needs to first divide the uplink time-frequency domain physical resources into physical resource blocks (Physical Resource Blocks, PRBs), and use the PRBs as physical resource units for scheduling and allocation. .

A PRB includes 12 consecutive subcarriers in the frequency domain, and 7 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols in the case of a standard cyclic prefix (Normal Cyclic Prefix, Normal CP) in the time domain, In the case of an Extended Cyclic Prefix (Extended Cyclic Prefix, Extended CP) in the time domain, six consecutive OFDM symbols are included. The frequency domain width of a PRB is 180kHz and the time length is 0.5ms. The PRBs of two time slots in a subframe form a PRB pair (PRB-Pair), which is called a resource block (Resource Block, RB).

Transmission of uplink data in the LTE system is scheduled based on base station scheduling. The basic time unit of scheduling is a subframe, and a subframe includes multiple time domain symbols. The specific scheduling process is that the base station sends a control channel, such as a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (Enhanced PDCCH, EPDCCH), which can carry a Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) scheduling information, the scheduling information includes control information such as resource allocation information, adjustment coding mode and so on. The user equipment transmits uplink data by detecting the scheduling information carried in the control channel.

The uplink service data channel sent by the user equipment in an uplink subframe is the PUSCH, the uplink control data channel sent by the user equipment is the Physical Uplink Control Channel (PUCCH), and the reference signal used to demodulate the PUSCH data or the PUCCH data is the demodulation signal. Demodulation Reference Signal (DMRS). In the prior art, the user equipment obtains the resources occupied by the PUSCH channel from the uplink data scheduling information sent to it by the access network device, and obtains the resources occupied by the PUCCH channel from the uplink control data resource configuration information sent to it by the access network device. Resources. In addition, the demodulation reference signal sent by the user equipment for demodulating the PUSCH channel data and the PUSCH channel are multiplexed with the same frequency resource in a time-division multiplexing (TDM) manner. The demodulation reference signal for modulating the data of the PUCCH channel and the PUSCH channel are multiplexed with the same frequency resources in a TDM manner. That is to say, the frequency domain width of the PUSCH or PUCCH channel is the same as the frequency domain width of the corresponding DMRS, and occupies different symbols in the time domain.

As can be seen from the above, in the prior art uplink data sending method, the user equipment uses the same frequency resources to send the uplink data and the DMRS, when discontinuous frequency resources are allocated to the user equipment, and the distance between these frequency resources is relatively large. , it may be difficult for the DMRS sent on these intermittent frequency resources to jointly estimate the channel characteristics, resulting in poor demodulation performance of the PUSCH or PUCCH.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a method for transmitting and receiving uplink data (uplink service data or uplink control data), user equipment and access network equipment, which can effectively improve the demodulation performance of PUSCH or PUCCH.

In one aspect, a method for sending uplink data is provided, the method comprising:

The user equipment determines that the frequency resource used for sending the uplink data is the first frequency resource;

The user equipment sends the uplink data on the first frequency resource, and sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource;

The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

It can be seen from the above that in this embodiment of the present invention, the user equipment sends uplink data and demodulation reference signals on different frequency resources, when the first frequency resource used for sending uplink data is a discrete frequency resource and there are gaps between the discrete frequency resources. When the interval is large, the second frequency resource used for sending the demodulation reference signal may be a continuous frequency resource or a frequency resource with a small interval, so that the access network device can use the demodulation reference signal received on different frequency resources to combine The channel characteristics are estimated, the channel estimation effect is good, and the demodulation performance of the uplink data is effectively guaranteed.

In a possible design, the user equipment sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, including:

The second frequency resource is the frequency resource obtained by the user equipment through the first indication information sent by the access network device; or,

The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for transmitting the uplink data.

In a possible design, the corresponding relationship between the frequency resource for sending the uplink data and the frequency resource of the demodulation reference signal for sending the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data.

In a possible design, the user equipment sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, including:

The sequence cyclic shift value of the demodulation reference signal is the cyclic shift value indicated by the cyclic shift information obtained by the user equipment through the second indication information sent by the access network device; or,

The sequence cyclic shift value of the demodulation reference signal is a cyclic shift information indication corresponding to the corresponding relationship between the preset frequency resource of the first frequency resource and the sequence cyclic shift information of the demodulation reference signal The cyclic shift value of , wherein the corresponding relationship between the frequency resource and the sequence cyclic shift information of the demodulation reference signal is the frequency resource for sending uplink data and the sequence cyclic shift of the demodulation reference signal for sending the uplink data. Correspondence between information.

In a possible design, the corresponding relationship between the frequency resource for sending the uplink data and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

In a possible design, the user equipment sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, including:

The user equipment sends, on the second frequency resource, a sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource.

In a possible design, the user equipment sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, including:

The user equipment sends, on the second frequency resource, N base sequences respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1.

In another aspect, a method for receiving uplink data is provided, the method comprising:

The access network device receives uplink data on the first frequency resource, and receives a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource;

The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

In a possible design, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The second frequency resource is the frequency resource indicated by the access network device through the first indication information sent to the user equipment; or,

The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset corresponding relationship between frequency resources, and the preset corresponding relationship between the frequency resources is that the user equipment sends an uplink Correspondence between the frequency resource of the data and the frequency resource of the demodulation reference signal that the user equipment sends the uplink data.

In a possible design, the corresponding relationship between the frequency resources used by the user equipment to send the uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data.

In a possible design, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The sequence cyclic shift value of the demodulation reference signal is the cyclic shift value indicated by the access network device through the cyclic shift information indicated by the second indication information sent to the user equipment; or,

The sequence cyclic shift value of the demodulation reference signal is a cyclic shift information indication corresponding to the corresponding relationship between the preset frequency resource of the first frequency resource and the sequence cyclic shift information of the demodulation reference signal cyclic shift value, wherein the corresponding relationship between the frequency resource and the sequence cyclic shift information of the demodulation reference signal is the frequency resource for the user equipment to send the uplink data and the solution for the user equipment to send the uplink data. Adjust the correspondence between the sequence cyclic shift information of the reference signal.

In a possible design, the correspondence between the frequency resource for sending the uplink data by the user equipment and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data by the user equipment includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

In a possible design, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The access network device receives, on the second frequency resource, a sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource.

In a possible design, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The access network device receives, on the second frequency resource, N base sequences respectively cyclically shifted and concatenated sequences whose length is the number of subcarriers of the second frequency resource, where N>1.

In yet another aspect, an embodiment of the present invention provides a user equipment, the user equipment can implement the function performed by the uplink data sender in the above method example, and the function can be implemented by hardware, or by executing corresponding software by hardware. . The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the structure of the user equipment includes a processor and a transceiver, and the processor is configured to support the user equipment to perform the corresponding functions in the above method. The transceiver is used to support communication between the user equipment and other network elements. The user equipment may also include a memory for coupling with the processor that holds program instructions and data necessary for the user equipment.

In yet another aspect, an embodiment of the present invention provides an access network device. The access network device can implement the function performed by the uplink data receiver in the above method example, and the function can be implemented by hardware or by hardware. corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the structure of the access network device includes a processor and a transceiver, and the processor is configured to support the access network device to perform the corresponding functions in the above method. The transceiver is used to support communication between the access network device and other network elements. The access network device may also include a memory for coupling with the processor, which stores necessary program instructions and data for the access network device.

In another aspect, an embodiment of the present invention provides a communication system, where the system includes the access network device and the user equipment described in the foregoing aspects.

In another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the user equipment described above, which includes a program designed to execute the above aspect.

In yet another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned access network device, which includes the program designed for executing the above-mentioned aspects.

Compared with the prior art, in the solution provided by the present invention, the user equipment sends uplink data and demodulation reference signals on different frequency resources. When the interval between frequency resources is relatively large, the second frequency resource used for sending the demodulation reference signal may be a continuous frequency resource or a frequency resource with a small interval, so that the access network device can use the solution received on different frequency resources. The reference signal is used to jointly estimate the channel characteristics, the effect of channel estimation is good, and the demodulation performance of the uplink data is effectively guaranteed. Preferably, by determining the sequence cyclic shift information used to generate the demodulation reference signal, it can be ensured that when different user equipments use frequency division multiplexing to send uplink data on the same uplink bandwidth, the information used for demodulation between user equipments The orthogonality between the sequences of the demodulation reference signals of the uplink data is adjusted to further ensure the demodulation performance of the uplink data.

Description of drawings

1 is a schematic diagram of a resource allocation method based on a unit resource set;

2 is a schematic diagram of a frequency resource of a PUSCH channel and a DMRS signal under a resource allocation mode based on a unit resource set;

3 is a flowchart of a method for sending uplink data provided by an embodiment of the present invention;

4 is a schematic diagram of a first frequency resource determined by a user equipment to be scheduled to send an uplink channel;

5a is a schematic diagram of a frequency resource of a PUSCH channel and a DMRS signal in a resource allocation mode based on a unit resource set determined according to a corresponding relationship;

5b is a schematic diagram of another frequency resource of a PUSCH channel and a DMRS signal in a resource allocation mode based on a unit resource set determined according to a corresponding relationship;

6a is a schematic diagram of another frequency resource of a PUSCH channel and a DMRS signal in a resource allocation mode based on a unit resource set determined according to a corresponding relationship;

6b is a schematic diagram of another frequency resource of a PUSCH channel and a DMRS signal in a resource allocation mode based on a unit resource set determined according to a corresponding relationship;

7 is a schematic diagram of a demodulation reference signal sequence determined in one way;

8 is a schematic diagram of a demodulation reference signal sequence determined in another manner;

9 is a structural diagram of an apparatus for transmitting uplink data provided by an embodiment of the present invention;

FIG. 10 is a structural diagram of a user equipment provided by an embodiment of the present invention;

11 is a flowchart of a method for receiving uplink data provided by an embodiment of the present invention;

FIG. 12 is a structural diagram of an access network device according to an embodiment of the present invention;

FIG. 13 is a structural diagram of another access network device according to an embodiment of the present invention.

Detailed ways

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 described below with reference to the accompanying drawings in the embodiments of the present invention.

Usually, the access network equipment allocates continuous frequency resources to the user equipment, but sometimes allocates intermittent frequency resources to the user equipment for a specific purpose. The following specific examples are used to describe the situation of this allocation of resources.

When user equipment transmits data on unlicensed spectrum resources, it needs to meet the restrictions on the power spectral density of the transmitted data. For example, the power transmitted by the user equipment per MHz cannot exceed the limit of 10 dBm or 7 dBm.

When the user equipment transmits data on the unlicensed spectrum, on the one hand, the transmitted power per MHz must not exceed 10 dBm or 7 dBm, and on the other hand, in order to meet the requirements of the coverage of the user equipment, the transmit power of the user equipment should not be limited. Therefore, when the user equipment transmits data on the unlicensed spectrum, the resource allocation method based on the unit resource set may be adopted. For example, the uplink bandwidth of the carrier on the unlicensed spectrum is divided into N unit resource sets. The access network equipment schedules the resources of the uplink data sent by the user equipment to be distributed in some or all of the N unit resource sets, and in each unit resource set occupied by the resources of the uplink data, the user equipment sends the uplink data. The resources actually occupied by the data are some or all of the RBs.

个。例如，用户设备在免许可频谱上通过PUSCH发送数据占用的资源为每个单位资源集合内的第3个RB；或者，用户设备在免许可频谱上通过PUSCH发送数据占用的资源为N个单位资源集合中的K个单位资源集合(N>K)内各自的第3个RB。Referring to the schematic diagram of the resource allocation method based on the unit resource set shown in FIG. 1, the total bandwidth of the carrier on the unlicensed spectrum is the width of N _RB RBs, and the uplink bandwidth is divided into N unit resource sets. The N unit resource sets are respectively Denoted as the first unit resource set, the second unit resource set...the Nth unit resource set, the number of RBs in each unit resource set is

indivual. For example, the resource occupied by the user equipment for sending data through the PUSCH on the unlicensed spectrum is the third RB in each unit resource set; or, the resource occupied by the user equipment for sending data through the PUSCH on the unlicensed spectrum is N unit resources The third RB in each of the K unit resource sets (N>K) in the set.

In the embodiment of the present invention, the above description is only an example, and the allocation of discontinuous frequency resources to the user equipment may be, but not limited to, the above resource allocation method based on the unit resource set. However, for the convenience of description, in the following specific embodiments The description is given by taking the resource allocation method based on the unit resource set as an example.

Referring to the schematic diagram of the frequency resources of the PUSCH/PUCCH channel and the DMRS signal under the resource allocation method based on the unit resource set shown in FIG. The frequency resources occupied by the DMRS are the same, and when the PUSCH/PUCCH and DMRS are transmitted on different symbols by time division, if the frequency resources of the PUSCH/PUCCH channel are discontinuous, and the distance between the discontinuous frequency resources is large , then the channel correlation corresponding to the demodulation reference signal on each discontinuous frequency resource is poor, resulting in that the receiving end cannot jointly process the channels estimated on these discontinuous frequency resources, which ultimately affects the receiving end's demodulation of the PUSCH/PUCCH channel performance. As described above, when the PUSCH resource allocation method based on the unit resource set is adopted, if the interval between the discontinuous frequency resources allocated to the user equipment for sending the PUSCH/PUCCH channel is relatively large, the PUSCH/PUCCH channel occupied by the user equipment will be occupied. When the frequency resources are the same as the frequency resources occupied by the DMRS used to demodulate the PUSCH/PUCCH channel, it is difficult for the DMRS sent on each non-consecutive frequency resource to jointly estimate the channel characteristics of the PUSCH/PUCCH, resulting in the performance of channel estimation. Poor, which ultimately affects the demodulation performance of the PUSCH/PUCCH at the receiving end.

By sending the demodulation reference signal used for demodulating the data information on a frequency resource different from that of the data information sent by the user equipment, the spacing between the frequency resource blocks occupied by the demodulation reference signal is not greater than the coherence of the channel When the bandwidth is increased, the corresponding channel estimation performance can be improved. Embodiments of the present invention provide a method for the user equipment to determine frequency resources for sending a demodulation reference signal and sequence cyclic shift information, so that the user equipment can send uplink data on a first frequency resource and send uplink data on a second frequency resource The sequence of the demodulation reference signal can realize the transmission of uplink data and the sequence of the demodulation reference signal on frequency resources of different widths, and by determining the sequence cyclic shift information used to generate the demodulation reference signal, it can When the device transmits the uplink data by frequency division multiplexing on the same uplink bandwidth, the orthogonality between the sequences of the demodulation reference signals used to demodulate the uplink data between the user equipments will ultimately ensure the demodulation performance of the uplink data. .

In a specific embodiment of the present invention, when the uplink channel resource adopts the resource allocation method based on the unit resource set, the frequency resources used for transmitting the DMRS for demodulating the PUSCH/PUCCH and the frequency resources used for transmitting the PUSCH/PUCCH are designed. The frequency resources of the PUCCH are different. In particular, by transmitting the DMRS on a wider frequency resource than the frequency resource used for transmitting the PUSCH/PUCCH, the performance of the channel estimation can be improved. And the cyclic shift information of the sequence of the demodulation reference signal used by the user equipment determined by the first information can ensure that when other user equipments send the PUSCH/PUCCH in the same uplink bandwidth by frequency division multiplexing, the user equipment is used for demodulation between the user equipments. The orthogonality between the DMRS signals of PUSCH/PUCCH is adjusted, and the demodulation performance of PUSCH/PUCCH is finally guaranteed. The above-mentioned first information may be information obtained by the user equipment by receiving the physical downlink control channel or the enhanced physical downlink control channel sent by the access network equipment; or, the above-mentioned first information may also be the information obtained by the user equipment through the first frequency resource. Location and/or size fetched information.

The present invention can be mainly applied to the LTE system, especially the system that transmits uplink data on the unlicensed spectrum.

In each communication system to which the present invention is applied, the two types of network elements involved are access network equipment and user equipment (User Equipment, UE), wherein the access network equipment may be, but is not limited to, a base station (eNodeB).

FIG. 3 is a flowchart of a method for sending uplink data provided by an embodiment of the present invention. The method is specifically performed by a user equipment. Referring to FIG. 3, the method includes:

Step 301, the user equipment determines that the frequency resource used for sending uplink data is the first frequency resource.

Specifically, the user equipment may obtain the frequency resource for sending the uplink data as the first frequency resource from the control domain related to resource allocation by receiving the uplink data scheduling indication information sent by the access network device. Alternatively, the user equipment may acquire, from the uplink control data resource configuration information sent to it by the access network device, the frequency resource for sending the uplink data as the first frequency resource. For example, the user equipment determines that the resources scheduled to send the uplink data channel are distributed in K unit resource sets, and in each unit resource set of the K unit resource sets, the uplink channel occupies part of the channel resources. As shown in FIG. 4 , the user equipment determines that the first frequency resource scheduled to transmit the uplink channel is 2 RBs in each unit resource set.

In this embodiment of the present invention, the user equipment may first receive the allocation information about the unit resource set sent by the access network device. For example, the user equipment determines how many unit resource sets the uplink channel resources are divided into, and how many RB resources are included in each unit resource set.

Optionally, the user equipment may also receive the indication information sent by the access network device in which unit resource sets the first frequency resource is distributed. For example, when the first frequency resource allocated by the access network device to the user equipment is only distributed in a part of the unit resource sets of all the unit resource sets configured for the user equipment, the user equipment needs the unit resources sent by the access network device The set indication information determines the information in which unit resource sets the first frequency resource is distributed in. If the resource allocation method based on the unit resource set does not support that the first frequency resource of the user equipment is only distributed on a part of the unit resource set, this step may not be performed.

则接入网设备通过

比特的资源分配的指示信息向用户设备指示每个单位资源集合内分配的RB资源的起点和终点。另一种方式是接入网设备在每个单位资源集合内分配给用户设备的资源还需满足预定义方式。举例来说，如果在每个单位资源集合内接入网设备分配给用户设备的RB个数为1个，该分配的资源可以是

个RB的任意一个；如果在每个单位资源集合内接入网设备分配给用户设备的RB个数为2个，该分配的资源只能是起始RB的索引为偶数的2个RB资源(即只能是第1～2、3～4、5～6，…的资源，而不能是第2～3、4～5、6～7，…的资源)；如果在每个单位资源集合内接入网设备分配给用户设备的RB个数为3个，该分配的资源只能是起始RB的索引为被3取模后为0的3个RB资源(即只能是第1～3、4～6、7～9，…的资源，而不能是第2～4、3～5的资源)，等等。对于第二种方式，接入网设备可以通过

比特的资源分配的指示信息向用户设备指示每个单位资源集合内分配的RB资源。The user equipment receives the indication information of resource allocation in each unit resource set sent by the access network device. For example, the resources allocated in each unit resource set are consecutive RBs. One way is that the access network equipment allocates to the user equipment a segment of resources with any RB as the starting point and any RB as the ending point in each unit resource set. For example, it is assumed that the number of RBs included in each unit resource set is

Then the access network equipment passes through

The bit resource allocation indication information indicates to the user equipment the start point and the end point of the allocated RB resources in each unit resource set. Another way is that the resources allocated by the access network device to the user equipment in each unit resource set also need to satisfy a predefined way. For example, if the number of RBs allocated by the access network equipment to the user equipment in each unit resource set is 1, the allocated resources may be

Any one of the RBs; if the number of RBs allocated by the access network equipment to the user equipment in each unit resource set is 2, the allocated resources can only be 2 RB resources with an even index of the starting RB ( That is, it can only be the resources of the 1st to 2nd, 3rd to 4th, 5th to 6th, ..., but not the resources of the 2nd to 3rd, 4th to 5th, 6th to 7th, ...); if in each unit resource set The number of RBs allocated by the access network equipment to the user equipment is 3, and the allocated resources can only be 3 RB resources whose index of the starting RB is 0 after being modulo 3 (that is, only the 1st to 3rd RB resources can be used). , 4 to 6, 7 to 9, ... but not 2 to 4, 3 to 5), etc. For the second method, the access network equipment can pass

The bit resource allocation indication information indicates to the user equipment the RB resources allocated in each unit resource set.

Optionally, if the number of RBs in the last unit resource set in the unit resource set configured for the user equipment is less than the number of RBs in other unit resource sets. Then, the user equipment determines that the RBs of the first frequency resource in the last unit resource set are corresponding to the RBs allocated in other unit resource sets, and there are RBs in the last unit resource set. It should be noted that the above-mentioned manner for the user equipment to determine the frequency resource for sending uplink data is only an example, and in this embodiment of the present application, the manner for the user equipment to determine the frequency resource for sending the uplink data is not specifically limited.

Step 302, the user equipment sends uplink data on the first frequency resource, and sends a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource.

The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

There are two situations for the user equipment to determine the location of the second frequency resource used by the demodulation reference signal used for demodulating the uplink data:

The first case: the position of the second frequency resource used by the demodulation reference signal used by the user equipment to demodulate the uplink data is preset, for example: preset, in the case of Normal CP, the second frequency resource is every All subcarriers of a time domain symbol in the middle of each time slot; in the case of Extended CP, the second frequency resource is all subcarriers of the third time domain symbol of each time slot. Alternatively, the user equipment may acquire the location of the second frequency resource through the first indication information sent by the access network device.

Case 2: The location of the second frequency resource used by the demodulation reference signal used by the user equipment to demodulate uplink data is one of multiple candidate frequency resources. For example, the multiple candidate frequency resources can be:

In the case of Normal CP, the multiple candidate frequency resources include odd-indexed subcarriers (or odd-indexed RBs) of the middle time-domain symbol of each time slot, and even-indexed subcarriers of the middle time-domain symbol of each time slot Resource on the carrier (or even indexed RB). Or, in the case of Extended CP, the multiple candidate frequency resources include odd-indexed subcarriers (or odd-indexed RBs) of the third time-domain symbol of each slot, the third time-domain symbol of each slot The resources on the even-indexed subcarriers (or even-indexed RBs) of .

Alternatively, the multiple alternative frequency resources may be:

In the case of Normal CP, all odd-indexed subcarriers in each unit resource set where the first frequency resource of the middle time-domain symbol of each time slot is located and the first frequency of the middle time-domain symbol of each time slot Any one of all even-indexed subcarriers in each unit resource set where the resource is located.

For example, the first frequency resource is distributed in the first unit resource set, the second unit resource set and the fourth unit resource set, then the candidate frequency resources are the first unit resource set of the middle time domain symbol of each time slot, All odd-indexed subcarriers in the second unit resource set and the fourth unit resource set, all the first unit resource set, the second unit resource set and the fourth unit resource set in the middle one time domain symbol of each slot Any of the even-indexed subcarriers.

For another example: the first frequency resource is distributed in the first unit resource set, the second unit resource set and the fourth unit resource set, then the candidate frequency resource is the first unit resource of a time domain symbol in the middle of each time slot. A frequency resource of a specified length in each unit resource set in the set, the second unit resource set and the fourth unit resource set.

Or in the case of Extended CP, all odd-indexed subcarriers in each unit resource set where the first frequency resource of the third time-domain symbol of each time slot is located and the third time-domain symbol of each time slot. Any one of all even-indexed subcarriers in each unit resource set where the first frequency resource is located.

For the second case, since the second frequency resource may be one of multiple candidate frequency resources, the user equipment may determine the second frequency resource according to the control field in the received uplink data scheduling indication information sent by the access network device s position. Alternatively, the user equipment determines the second frequency resource according to the preset correspondence between the first frequency resource and the second frequency resource. For example, in the case of Normal CP, the preset correspondence between the first frequency resource and the second frequency resource is shown in Table 1:

Table I

According to the correspondence shown in Table 1, a schematic diagram of the frequency resources of the PUSCH channel and the DMRS signal in the resource allocation mode based on the unit resource set as shown in FIG. 5a can be obtained, wherein the upper and lower lines respectively indicate the Distribution and the distribution of the second frequency resource, referring to Figure 5a, the first frequency resource only occupies 3 consecutive RBs in each unit resource set in the two unit resource sets of the first unit resource set and the second unit resource set, The indices of these three RBs are 1, 2, and 3 respectively. Since the index of the first RB occupied by the first frequency resource is odd, it is determined that the second frequency resource occupies all the time domain symbols in the middle of each time slot. Odd-indexed subcarriers, that is, the second frequency resource occupies 6 discontinuous RBs in each unit resource set in all unit resource sets, and the indices of these 6 RBs are 1, 3, 5, 7, and 9 respectively. , 11.

According to the corresponding relationship shown in Table 1, a schematic diagram of a frequency resource of the PUSCH channel and the DMRS signal in the resource allocation mode based on the unit resource set as shown in FIG. 5b can be obtained, wherein the upper and lower lines respectively indicate the Distribution and the distribution of the second frequency resource, referring to Figure 5b, the first frequency resource only occupies 2 consecutive RBs in each unit resource set in the two unit resource sets of the first unit resource set and the second unit resource set, The indices of these two RBs are 2 and 3 respectively. Since the index of the first RB occupied by the first frequency resource is an even number, it is determined that the second frequency resource occupies all even indices of the middle time domain symbol of each time slot. Subcarriers, that is, the second frequency resource occupies 6 discontinuous RBs in each unit resource set in all unit resource sets, and the indices of these 6 RBs are 2, 4, 6, 8, 10, and 12 respectively. .

For another example, in the case of Normal CP, the preset correspondence between the first frequency resource and the second frequency resource may be as shown in Table 2:

Table II

According to the correspondence shown in Table 2, a schematic diagram of a frequency resource of the PUSCH channel and the DMRS signal in the resource allocation method based on the unit resource set as shown in FIG. 6a can be obtained, wherein the upper and lower lines respectively indicate the first frequency resource Distribution and the distribution of the second frequency resource, referring to Figure 6a, the first frequency resource only occupies 3 consecutive RBs in each unit resource set in the two unit resource sets of the first unit resource set and the second unit resource set, The indices of these three RBs are 1, 2, and 3 respectively. Since the index of the first RB occupied by the first frequency resource is odd, and the first frequency resource only occupies the first unit resource set and the second unit resource set two unit resource sets, therefore, it is determined that the second frequency resource occupies all odd-numbered subcarriers of the two unit resource sets of the first unit resource set and the second unit resource set that occupy the middle one time domain symbol of each time slot, and also That is to say, the second frequency resource occupies 6 discontinuous RBs in each unit resource set in the first unit resource set and the second unit resource set, and the indexes of these 6 RBs are 1, 3, 5, 7, 9, 11.

According to the correspondence shown in Table 2, a schematic diagram of a frequency resource of the PUSCH channel and the DMRS signal in the resource allocation method based on the unit resource set as shown in FIG. 6b can be obtained, wherein the upper and lower lines respectively indicate the Distribution and the distribution of the second frequency resource, referring to Figure 6b, the first frequency resource only occupies 2 consecutive RBs in each unit resource set in the two unit resource sets of the first unit resource set and the second unit resource set, The indices of these two RBs are 2 and 3 respectively. Since the index of the first RB occupied by the first frequency resource is an even number, and the first frequency resource only occupies two of the first unit resource set and the second unit resource set unit resource set, therefore, it is determined that the second frequency resource occupies all even index subcarriers of the two unit resource sets of the first unit resource set and the second unit resource set of the middle one time domain symbol of each time slot, that is, , the second frequency resource occupies 6 discontinuous RBs in each unit resource set in the first unit resource set and the second unit resource set, and the indices of these 6 RBs are 2, 4, 6, 8, 10, 12.

定义为基序列

的α循环移位。

这里

是参考信号序列的长度。参考信号的长度必须为整数个RB所包含的子载波数。以一个基序列的不同移位参量α可以生成多个参考信号序列。对于不同的用户设备的PUSCH，各自相应的DMRS所占用的频率资源不同，或者各自占用的频率资源相同但DMRS序列之间正交。The demodulation reference signal used to demodulate the uplink data uses Zad-off Chu sequence

defined as base sequence

alpha cyclic shift.

here

is the length of the reference signal sequence. The length of the reference signal must be the number of subcarriers included in an integer number of RBs. Multiple reference signal sequences can be generated with different shift parameters α of a base sequence. For the PUSCHs of different user equipments, the frequency resources occupied by the respective corresponding DMRSs are different, or the frequency resources occupied by the respective users are the same but the DMRS sequences are orthogonal.

There are many ways for the user equipment to determine the cyclic shift information of the demodulation reference signal sequence. A possible way is that the user equipment receives the uplink data scheduling indication information sent by the access network equipment, and obtains the DMRS used for demodulating the uplink data from the control field used to indicate the cyclic shift and orthogonal code information of the DMRS. cyclic shift information. That is, the user equipment can obtain the cyclic shift information of the demodulation reference signal sequence through the second indication information sent by the access network device. The second indication information and the above-mentioned first indication information here may be indication information in different indication fields included in the primary scheduling indication information sent by the access network device to the user equipment, or may be the indication information sent by the access network device to the user equipment. The indication information included in the scheduling indication information twice or more is not limited in the present invention.

Another possible way is that the user equipment determines the cyclic shift information of the DMRS used for demodulating the uplink data by using a preset correspondence between the first frequency resource and the cyclic shift information of the DMRS.

For example, the correspondence between the first frequency resource and the demodulation reference signal information includes: the user equipment determines the cyclic shift information used for the demodulation reference signal according to the distribution of the first frequency resource in each unit resource set. Taking each unit resource set including 5 RBs as an example, the user equipment can determine the cyclic shift information (CyclicShift) of the sequence used by the DMRS according to the distribution of the first frequency resources in each unit resource set according to the corresponding relationship in the following table. . For example, the corresponding relationship between the distribution of the first frequency resource in each unit resource set resource and the cyclic shift information of the DMRS sequence may be specifically shown in Table 3.

Table 3

个RB，则所述解调参考信号所使用的循环移位“CyclicShift”的值为

K的值为预设值，优选的，K＝12。For another example, the first frequency resource occupies the first frequency of the unit resource set within the resource set of the unit resource set.

RBs, the value of the cyclic shift "CyclicShift" used by the demodulation reference signal is

The value of K is a preset value, preferably, K=12.

In this embodiment of the present invention, step 302 and step 303 are optional steps, that is, the above-mentioned second frequency resource and the above-mentioned sequence cyclic shift information may be determined in advance, or may be determined in real time. When sending uplink data, only step 302 may be performed without step 303, or only step 303 may be performed without step 302, or neither step 302 nor step 303 may be performed, or step 302 may also be performed with step 303. The sequence of steps 301 to 303 is not limited, and the three can be executed simultaneously or sequentially.

After the user equipment determines the location and cyclic shift information of the second frequency resource used for demodulating the uplink data, there are two ways to determine the demodulation reference signal sequence.

The first way is that the determined demodulation reference signal sequence is the alpha cyclic shift of the base sequence whose length is the same as the number of subcarriers in one symbol of the second frequency resource. Wherein, α is the cyclic shift of the DMRS sequence determined in step 303 above. Referring to the schematic diagram of the demodulation reference signal sequence shown in FIG. 7 , where L0 represents the number of subcarriers of the second frequency resource in one symbol.

The second way is that the determined demodulation reference signal sequence consists of K short sequences. Wherein K is the number of unit resource sets where the user equipment is scheduled to send the resource of the uplink data channel. For each of the K short sequences, the length thereof is the number of subcarriers occupied by the second frequency resource in one symbol in the unit resource set of one frequency resource. And each short sequence is the base sequence of the length and is generated by the cyclic shift α of the sequence used by the DMRS acquired in step 303 . Referring to the schematic diagram of the demodulation reference signal sequence shown in FIG. 8 , where L1 represents the number of subcarriers in one symbol of the second frequency resource in the first unit resource set, and L2 represents the second frequency resource in the second unit resource The number of subcarriers on one symbol in the set, LK represents the number of subcarriers on one symbol of the second frequency resource in the Kth unit resource set, the length shown in the figure is only an example, in practical applications, K short sequences The lengths of the K short sequences may be the same or different, and the sum of the lengths of the K short sequences is the number of subcarriers in one symbol of the second frequency resource.

In this embodiment of the present invention, the user equipment sends uplink data on the first frequency resource, and sends a sequence of demodulation reference signals on the second frequency resource, so that uplink data and demodulation reference signals can be sent on frequency resources of different widths and by determining the sequence cyclic shift information used to generate the demodulation reference signal, it can be ensured that when different user equipments use frequency division multiplexing on the same uplink bandwidth to send uplink data, The orthogonality between the demodulation reference signals used to demodulate the uplink data ultimately guarantees the demodulation performance of the uplink data.

FIG. 9 is a structural diagram of a user equipment provided by an embodiment of the present invention. The user equipment is configured to execute the uplink data sending method provided by the embodiment of the present invention, and the user equipment includes:

a determining unit 901, configured to determine that a frequency resource used for sending uplink data is a first frequency resource;

a sending unit 902, configured to send the uplink data on the first frequency resource determined by the determining unit 901, and send a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource; the The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

Optionally, the sending unit 902 sends the second frequency resource used to demodulate the sequence of the demodulation reference signal of the uplink data, specifically:

The frequency resource obtained by the user equipment through the first indication information sent by the access network device; or,

A frequency resource corresponding to the first frequency resource through a preset corresponding relationship between the frequency resources, where the corresponding relationship between the preset frequency resources is the frequency resource for sending uplink data and the solution for sending the uplink data. The corresponding relationship between the frequency resources of the reference signal is adjusted.

Optionally, the corresponding relationship between the frequency resource for sending uplink data and the frequency resource for sending the demodulation reference signal of the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data.

Optionally, the sequence cyclic shift value of the demodulation reference signal used by the sending unit 902 to send is specifically:

The cyclic shift value indicated by the cyclic shift information obtained by the user equipment through the second indication information sent by the access network device; or,

The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The corresponding relationship between the sequence cyclic shift information of the demodulation reference signal is the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

Optionally, the corresponding relationship between the frequency resource for sending the uplink data and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

Optionally, the sequence of the demodulation reference signal used by the sending unit 902 to send is specifically:

The length sent on the second frequency resource is a sequence obtained by cyclic shift of the base sequence of the number of subcarriers included in the second frequency resource.

Optionally, the sequence of the demodulation reference signal used by the sending unit 902 to send is specifically:

The N base sequences sent on the second frequency resource are respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1.

FIG. 10 is a structural diagram of a user equipment provided by an embodiment of the present invention, where the user equipment includes: a memory 1001, a processor 1002, and a communication interface 1003;

The memory 1001 is used to store program instructions;

The processor 1002 is configured to perform the following operations according to program instructions stored in the memory 1001:

determining that the frequency resource used for sending the uplink data is the first frequency resource;

The uplink data is sent on the first frequency resource through the communication interface 1003, and a sequence of demodulation reference signals for demodulating the uplink data is sent on the second frequency resource through the communication interface 1003 ;

The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

Optionally, the second frequency resource used when the processor 1002 executes the operation of transmitting the sequence of the demodulation reference signal for demodulating the uplink data on the second frequency resource through the communication interface 1003, Specifically:

The frequency resource obtained through the first indication information sent by the access network device; or,

A frequency resource corresponding to the first frequency resource through a preset corresponding relationship between the frequency resources, where the corresponding relationship between the preset frequency resources is the frequency resource for sending uplink data and the solution for sending the uplink data. The corresponding relationship between the frequency resources of the reference signal is adjusted.

Optionally, the corresponding relationship between the frequency resource for sending uplink data and the frequency resource for sending the demodulation reference signal of the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data.

Optionally, when the processor 1002 performs the operation of sending a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1003, the demodulation reference signals The sequence cyclic shift value of , specifically:

The cyclic shift value indicated by the cyclic shift information obtained through the second indication information sent by the access network device; or,

The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The corresponding relationship between the sequence cyclic shift information of the demodulation reference signal is the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

Optionally, the corresponding relationship between the frequency resource for sending the uplink data and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

Optionally, the operation of the processor 1002 performing the operation of sending a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1003 includes:

A sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource is sent on the second frequency resource through the communication interface 1003 .

Optionally, the operation of the processor 1002 performing the operation of sending a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1003 includes:

Send N base sequences on the second frequency resource through the communication interface 1003, respectively, after cyclic shift, the concatenated sequences whose length is the number of subcarriers of the second frequency resource, where N>1.

Correspondingly, an embodiment of the present invention also provides a method for receiving uplink data. FIG. 11 is a flowchart of the method for receiving uplink data provided by an embodiment of the present invention, and the method includes:

Step 1101, the access network device receives uplink data on a first frequency resource, and receives a sequence of demodulation reference signals used to demodulate the uplink data on a second frequency resource; the first frequency resource and the first frequency resource The two frequency resources are not equal in size in the frequency domain.

In an example, the second frequency resource is a frequency resource indicated by the access network device through the first indication information sent to the user equipment; or, the second frequency resource is a frequency resource indicated by the first frequency resource The frequency resources corresponding to the preset corresponding relationship between the frequency resources, the preset corresponding relationship between the frequency resources is the frequency resource for sending the uplink data by the user equipment and the solution for the user equipment sending the uplink data. The corresponding relationship between the frequency resources of the reference signal is adjusted.

In an example, the corresponding relationship between the frequency resources used by the user equipment to send the uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data includes: a first frequency resource of the frequency resources used to send the uplink data. The corresponding relationship between the index values of the RB resources and the frequency resources of the demodulation reference signal for transmitting uplink data.

In an example, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The sequence cyclic shift value of the demodulation reference signal is the cyclic shift value indicated by the access network device through the cyclic shift information indicated by the second indication information sent to the user equipment; or,

The sequence cyclic shift value of the demodulation reference signal is a cyclic shift information indication corresponding to the corresponding relationship between the preset frequency resource of the first frequency resource and the sequence cyclic shift information of the demodulation reference signal cyclic shift value, wherein the corresponding relationship between the frequency resource and the sequence cyclic shift information of the demodulation reference signal is the frequency resource for the user equipment to send the uplink data and the solution for the user equipment to send the uplink data. Adjust the correspondence between the sequence cyclic shift information of the reference signal.

In an example, the correspondence between the frequency resource for sending the uplink data by the user equipment and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data by the user equipment includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

In an example, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The access network device receives, on the second frequency resource, a sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource.

In an example, the access network device receives, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, including:

The access network device receives, on the second frequency resource, N base sequences respectively cyclically shifted and concatenated sequences whose length is the number of subcarriers of the second frequency resource, where N>1.

In this embodiment of the present invention, since the method for receiving uplink data corresponds to the method for transmitting uplink data, the same parts are not described here.

An embodiment of the present invention further provides an access network device. FIG. 12 is a structural diagram of an access network device provided by an embodiment of the present invention. The access network device is configured to execute the uplink data receiving method provided by the embodiment of the present invention. The access network equipment includes:

a receiving unit 1201, configured to receive uplink data on a first frequency resource, and receive a sequence of demodulation reference signals used to demodulate the uplink data on a second frequency resource;

The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

Optionally, the receiving unit 1201 is configured to receive the second frequency resource used to demodulate the sequence of the demodulation reference signal of the uplink data, specifically:

The frequency resource indicated by the first indication information sent to the user equipment; or,

A frequency resource corresponding to the first frequency resource through a preset corresponding relationship between frequency resources, where the preset corresponding relationship between the frequency resources is the frequency resource for sending uplink data by the user equipment and the The correspondence between the frequency resources of the demodulation reference signal that the user equipment sends the uplink data.

Optionally, the corresponding relationship between the frequency resources used by the user equipment to send the uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data includes:

The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data.

Optionally, the sequence cyclic shift value of the demodulation reference signal received by the receiving unit 1201 is specifically:

The cyclic shift value indicated by the cyclic shift information indicated by the second indication information sent to the user equipment; or,

The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The correspondence between the sequence cyclic shift information of the demodulation reference signal is the correspondence between the frequency resource of the user equipment for sending uplink data and the sequence cyclic shift information of the demodulation reference signal for the user equipment to send the uplink data. relation.

Optionally, the correspondence between the frequency resource for sending the uplink data by the user equipment and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data by the user equipment includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data.

Optionally, the sequence of the demodulation reference signal received by the receiving unit 1201 is specifically:

The length received on the second frequency resource is a sequence obtained by cyclic shift of the base sequence of the number of subcarriers included in the second frequency resource.

Optionally, the sequence of the demodulation reference signal received by the receiving unit 1201 is specifically:

The N base sequences received on the second frequency resource are respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1.

FIG. 13 is a structural diagram of another access network device provided by an embodiment of the present invention. The access network device includes: a memory 1301, a processor 1302, and a communication interface 1303;

The memory 1301 is used to store program instructions;

The processor 1302 is configured to perform the following operations according to program instructions stored in the memory 1301:

Receive uplink data on the first frequency resource through the communication interface 1303, and receive a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1303;

The sizes of the first frequency resource and the second frequency resource in the frequency domain are not equal.

Optionally, the second frequency resource used when the processor 1302 performs an operation of receiving a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1303, specifically: :

the frequency resource indicated by the access network device through the first indication information sent to the user equipment; or,

A frequency resource corresponding to the first frequency resource through a preset corresponding relationship between frequency resources, where the preset corresponding relationship between the frequency resources is the frequency resource for sending uplink data by the user equipment and the The correspondence between the frequency resources of the demodulation reference signal that the user equipment sends the uplink data.

Optionally, the corresponding relationship between the frequency resources used by the user equipment to send the uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data.

Optionally, when the processor 1302 performs the operation of receiving the sequence of the demodulation reference signal for demodulating the uplink data on the second frequency resource through the communication interface 1303, the value of the demodulation reference signal is Sequence cyclic shift value, specifically:

The cyclic shift value indicated by the access network device through the cyclic shift information indicated by the second indication information sent to the user equipment; or,

The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The correspondence between the sequence cyclic shift information of the demodulation reference signal is the correspondence between the frequency resource of the user equipment for sending uplink data and the sequence cyclic shift information of the demodulation reference signal for the user equipment to send the uplink data. relation.

Optionally, the correspondence between the frequency resource for sending the uplink data by the user equipment and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data by the user equipment includes:

The corresponding relationship between the index value of the first RB resource of the frequency resource for receiving uplink data and the sequence cyclic shift information of the demodulation reference signal for receiving the uplink data.

Optionally, the processor 1302 performs an operation of receiving a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1303, including:

A sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource is received on the second frequency resource through the communication interface 1303 .

Optionally, the processor 1302 performs the operation of receiving a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource through the communication interface 1303, including:

Receive N base sequences on the second frequency resource through the communication interface 1303 respectively after cyclic shift and concatenated sequences whose length is the number of subcarriers of the second frequency resource, where N>1.

Professionals should be further aware that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. Interchangeability, the above description has generally described the components and steps of each example in terms of function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

Those of ordinary skill in the art can understand that all or part of the steps in the method of implementing the above embodiments can be completed by instructing the processor through a program, and the program can be stored in a computer-readable storage medium, and the storage medium is non-transitory ( English: non-transitory) media, such as random access memory, read only memory, flash memory, hard disk, solid state disk, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (36)

1. A method for sending uplink data, characterized in that the method comprises: The user equipment determines that the frequency resource used for sending the uplink data is the first frequency resource; The user equipment sends the uplink data on the first frequency resource, and sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource; wherein the second frequency resource is The frequency resource obtained by the user equipment through the first indication information sent by the access network device; or, The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for sending the uplink data; The size of the first frequency resource and the second frequency resource are not equal in the frequency domain, and occupy different time domain symbols in the time domain. 2. The method according to claim 1, wherein the corresponding relationship between the frequency resource for transmitting uplink data and the frequency resource for transmitting the demodulation reference signal of the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data. 3. The method according to any one of claims 1-2, wherein the user equipment sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, comprising: The sequence cyclic shift value of the demodulation reference signal is the cyclic shift value indicated by the cyclic shift information obtained by the user equipment through the second indication information sent by the access network device; or, The sequence cyclic shift value of the demodulation reference signal is a cyclic shift information indication corresponding to the corresponding relationship between the preset frequency resource of the first frequency resource and the sequence cyclic shift information of the demodulation reference signal The cyclic shift value of , wherein the corresponding relationship between the frequency resource and the sequence cyclic shift information of the demodulation reference signal is the frequency resource for sending uplink data and the sequence cyclic shift of the demodulation reference signal for sending the uplink data. Correspondence between information. 4. The method according to claim 3, wherein the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 5. The method according to any one of claims 1-2, wherein the user equipment sends, on the second frequency resource, a sequence of demodulation reference signals used to demodulate the uplink data, comprising: The user equipment sends, on the second frequency resource, a sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource. 6. The method according to any one of claims 1-2, wherein the user equipment sends a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, comprising: The user equipment sends, on the second frequency resource, N base sequences respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1. 7. A user equipment, wherein the user equipment comprises: a determining unit, configured to determine that the frequency resource used for sending the uplink data is the first frequency resource; a sending unit, configured to send the uplink data on the first frequency resource determined by the determining unit, and send a sequence of demodulation reference signals for demodulating the uplink data on the second frequency resource; Wherein, the second frequency resource is the frequency resource obtained by the user equipment through the first indication information sent by the access network device; or, The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for sending the uplink data; The size of the first frequency resource and the second frequency resource are not equal in the frequency domain, and occupy different time domain symbols in the time domain. 8. The user equipment according to claim 7, wherein the corresponding relationship between the frequency resources for transmitting uplink data and the frequency resources for transmitting the demodulation reference signal of the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data. 9. The user equipment according to any one of claims 7-8, wherein the cyclic shift value of the sequence of the demodulation reference signal used by the sending unit to send is specifically: The cyclic shift value indicated by the cyclic shift information obtained by the user equipment through the second indication information sent by the access network device; or, The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The corresponding relationship between the sequence cyclic shift information of the demodulation reference signal is the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 10. The user equipment according to claim 9, wherein the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 11. The user equipment according to any one of claims 7-8, wherein the sequence of the demodulation reference signal used by the sending unit to send is specifically: The length sent on the second frequency resource is a sequence obtained by cyclic shift of the base sequence of the number of subcarriers included in the second frequency resource. 12. The user equipment according to any one of claims 7-8, wherein the sequence of the demodulation reference signal used by the sending unit to send is specifically: The N base sequences sent on the second frequency resource are respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1. 13. A user equipment, wherein the user equipment comprises: a memory, a processor and a communication interface; the memory for storing program instructions; The processor is configured to perform the following operations according to the program instructions stored in the memory: determining that the frequency resource used for sending the uplink data is the first frequency resource; The uplink data is sent on the first frequency resource through the communication interface, and a sequence of demodulation reference signals for demodulating the uplink data is sent on the second frequency resource through the communication interface; wherein , the second frequency resource is the frequency resource obtained by the user equipment through the first indication information sent by the access network device; or, The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for sending the uplink data; The size of the first frequency resource and the second frequency resource are not equal in the frequency domain, and occupy different time domain symbols in the time domain. 14. The user equipment according to claim 13, wherein the corresponding relationship between the frequency resource for transmitting uplink data and the frequency resource for transmitting the demodulation reference signal of the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data. 15. The user equipment according to any one of claims 13-14, wherein the processor executes the sending of the uplink data for demodulating the uplink data on the second frequency resource through the communication interface. During the operation of demodulating the sequence of the reference signal, the cyclic shift value of the sequence of the demodulating reference signal is specifically: The cyclic shift value indicated by the cyclic shift information obtained through the second indication information sent by the access network device; or, The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The corresponding relationship between the sequence cyclic shift information of the demodulation reference signal is the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 16. The user equipment according to claim 15, wherein the corresponding relationship between the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 17. The user equipment according to any one of claims 13-14, wherein the processor executes the sending of the uplink data for demodulation on the second frequency resource through the communication interface. The operation of demodulating a sequence of reference signals, including: A sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource is sent on the second frequency resource through the communication interface. 18. The user equipment according to any one of claims 13-14, wherein the processor executes the sending of the uplink data for demodulating the uplink data on the second frequency resource through the communication interface. The operation of demodulating a sequence of reference signals, including: The N base sequences are respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1, through the communication interface. 19. A method for receiving uplink data, wherein the method comprises: The access network device receives uplink data on the first frequency resource, and receives a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource; wherein, the second frequency resource is the user equipment through the connection The frequency resource obtained from the first indication information sent by the network access device; or, The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for sending the uplink data; The size of the first frequency resource and the second frequency resource are not equal in the frequency domain, and occupy different time domain symbols in the time domain. 20. The method according to claim 19, wherein the corresponding relationship between the frequency resources used by the user equipment to send uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data comprises: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data. 21. The method according to any one of claims 19-20, wherein the access network device receives a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, include: The sequence cyclic shift value of the demodulation reference signal is the cyclic shift value indicated by the access network device through the cyclic shift information indicated by the second indication information sent to the user equipment; or, The sequence cyclic shift value of the demodulation reference signal is a cyclic shift information indication corresponding to the corresponding relationship between the preset frequency resource of the first frequency resource and the sequence cyclic shift information of the demodulation reference signal cyclic shift value, wherein the corresponding relationship between the frequency resource and the sequence cyclic shift information of the demodulation reference signal is the frequency resource for the user equipment to send the uplink data and the solution for the user equipment to send the uplink data. Adjust the correspondence between the sequence cyclic shift information of the reference signal. 22 . The method according to claim 21 , wherein the corresponding relationship between the frequency resource for sending the uplink data by the user equipment and the sequence cyclic shift information of the demodulation reference signal for sending the uplink data by the user equipment include: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting the uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 23. The method according to any one of claims 19-20, wherein the access network device receives a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, include: The access network device receives, on the second frequency resource, a sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource. 24. The method according to any one of claims 19-20, wherein the access network device receives a sequence of demodulation reference signals used to demodulate the uplink data on the second frequency resource, include: The access network device receives, on the second frequency resource, N base sequences respectively cyclically shifted and concatenated sequences whose length is the number of subcarriers of the second frequency resource, where N>1. 25. An access network device, wherein the access network device comprises: a receiving unit, configured to receive uplink data on a first frequency resource, and receive a sequence of demodulation reference signals used to demodulate the uplink data on a second frequency resource; wherein the second frequency resource is used by the user equipment through The frequency resource obtained by the first indication information sent by the access network device; or, The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for sending the uplink data; The size of the first frequency resource and the second frequency resource are not equal in the frequency domain, and occupy different time domain symbols in the time domain. 26 . The access network device according to claim 25 , wherein the corresponding relationship between the frequency resources used by the user equipment to send uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data. 26 . include: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data. 27. The access network device according to any one of claims 25-26, wherein the sequence cyclic shift value of the demodulation reference signal received by the receiving unit is specifically: The cyclic shift value indicated by the cyclic shift information indicated by the second indication information sent to the user equipment; or, The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The correspondence between the sequence cyclic shift information of the demodulation reference signal is the correspondence between the frequency resource of the user equipment for sending uplink data and the sequence cyclic shift information of the demodulation reference signal for the user equipment to send the uplink data. relation. 28. The access network device according to claim 27, wherein, there is a difference between a frequency resource used by the user equipment to send uplink data and sequence cyclic shift information of a demodulation reference signal used by the user equipment to send the uplink data. The corresponding relationship includes: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting the uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 29. The access network device according to any one of claims 25-26, wherein the sequence of the demodulation reference signal received by the receiving unit is specifically: The length received on the second frequency resource is a sequence obtained by cyclic shift of the base sequence of the number of subcarriers included in the second frequency resource. 30. The access network device according to any one of claims 25-26, wherein the sequence of the demodulation reference signal received by the receiving unit is specifically: The N base sequences received on the second frequency resource are respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource, where N>1. 31. An access network device, wherein the access network device comprises: a memory, a processor and a communication interface; the memory for storing program instructions; The processor is configured to perform the following operations according to the program instructions stored in the memory: Receive uplink data on a first frequency resource through the communication interface, and receive a sequence of demodulation reference signals for demodulating the uplink data on a second frequency resource through the communication interface; wherein the first frequency The second frequency resource is the frequency resource obtained by the user equipment through the first indication information sent by the access network device; or, The second frequency resource is a frequency resource corresponding to the first frequency resource through a preset correspondence between frequency resources, and the correspondence between the preset frequency resources is a frequency resource for sending uplink data and the corresponding relationship between the frequency resources of the demodulation reference signal for sending the uplink data; The size of the first frequency resource and the second frequency resource are not equal in the frequency domain, and occupy different time domain symbols in the time domain. 32 . The access network device according to claim 31 , wherein the corresponding relationship between the frequency resources used by the user equipment to send uplink data and the frequency resources of the demodulation reference signals used by the user equipment to send the uplink data. 32 . include: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting uplink data and the frequency resource of the demodulation reference signal for transmitting uplink data. 33. The access network device according to any one of claims 31-32, wherein the processor performs the receiving on the second frequency resource through the communication interface for demodulating the uplink The cyclic shift value of the sequence of the demodulation reference signal during the operation of the sequence of the demodulation reference signal of the data is specifically: The cyclic shift value indicated by the access network device through the cyclic shift information indicated by the second indication information sent to the user equipment; or, The cyclic shift value indicated by the cyclic shift information corresponding to the first frequency resource through the corresponding relationship between the preset frequency resource and the sequence cyclic shift information of the demodulation reference signal, wherein the frequency resource and The correspondence between the sequence cyclic shift information of the demodulation reference signal is the correspondence between the frequency resource of the user equipment for sending uplink data and the sequence cyclic shift information of the demodulation reference signal for the user equipment to send the uplink data. relation. 34 . The access network device according to claim 33 , wherein the frequency resource used by the user equipment to send and receive uplink data and the sequence cyclic shift information of the demodulation reference signal used by the user equipment to send the uplink data. 34 . The corresponding relationship includes: The corresponding relationship between the index value of the first resource block RB resource of the frequency resource for transmitting the uplink data and the sequence cyclic shift information of the demodulation reference signal for transmitting the uplink data. 35. The access network device according to any one of claims 31-32, wherein the processor executes a process for demodulating the uplink data received on the second frequency resource through the communication interface. The operation of demodulating a sequence of reference signals, including: A sequence obtained by cyclic shift of a base sequence whose length is the number of subcarriers included in the second frequency resource is received on the second frequency resource through the communication interface. 36. The access network device according to any one of claims 31-32, wherein the processor performs the receiving on the second frequency resource through the communication interface for demodulating the uplink The operation of the sequence of demodulation reference signals of data, including: The N base sequences are respectively cyclically shifted and concatenated sequences with a length equal to the number of subcarriers of the second frequency resource are received on the second frequency resource through the communication interface, where N>1.

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