WO2018027948A1

WO2018027948A1 - Resource mapping method, base station and terminal device

Info

Publication number: WO2018027948A1
Application number: PCT/CN2016/094988
Authority: WO
Inventors: 张瑞齐; 曲秉玉
Original assignee: 华为技术有限公司
Priority date: 2016-08-12
Filing date: 2016-08-12
Publication date: 2018-02-15

Abstract

Disclosed in the present invention are a resource mapping method, base station and terminal device. The method comprises: a base station configuring a reference signal resource group to a terminal device, the reference signal resource group comprising a plurality of resource units; the base station mapping a reference signal on a first resource unit group in the reference signal resource group; the base station mapping downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group does not comprise a resource unit within the first resource unit group in the reference signal resource group; the base station acquiring time-frequency information used to indicate the first resource unit group; and the base station sending the time-frequency information to the terminal device by means of a downlink control channel. The embodiments of the present invention may improve resource utilization and avoid wasting resources.

Description

Resource mapping method, base station and terminal device

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a resource mapping method, a base station, and a terminal device.

Background technique

When the base station needs to send data to the UE (User Equipment, User Equipment) through the PDSCH (Physical Downlink Shared Channel), in order to enable the UE to successfully receive data sent by the base station from the PDSCH channel, the base station first It is necessary to know the CSI (Channel State Information) of the PDSCH channel between the base station and the UE.

The base station may be configured with a reference signal resource group, and the base station may map a resource unit of a CSI-RS (Channel State Information Reference Signal) in the reference signal resource group, where the CSI-RS is used to measure the CSI, and then The UE indicates time-frequency information of the mapped CSI-RS resource unit.

However, in the process of implementing the embodiments of the present invention, the inventor finds that when the number of CSI-RSs that the base station needs to send to the UE is small, the base station often only maps the CSI-RS on a part of the resource elements in the reference signal resource group, resulting in a reference. There are unmapped resource units in the signal resource group, which results in waste of resources and low resource utilization.

Summary of the invention

To overcome the problems in the related art, the embodiments of the present invention provide a resource mapping method, a base station, and a terminal device.

According to a first aspect of the embodiments of the present invention, a resource mapping method is provided, where the method includes:

The base station configures a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The base station mapping a reference signal on the first resource element group in the reference signal resource group;

Mapping, by the base station, downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group not including the first resource in the reference signal resource group a resource unit in a unit group;

The base station acquires time-frequency information used to indicate the first resource unit group;

The base station sends the time-frequency information to the terminal device by using a downlink control channel.

Through the above method, after the base station maps the reference signal in the first resource element group in the reference signal resource group, if the resource unit in the first resource unit group is only a part of the resource elements in the reference signal resource group, the reference signal resource If there are still unmapped resource units in the group, the base station may form the unmapped resource units into the second resource unit group, and map the downlink data of the terminal device in the second resource unit group, thereby improving resource utilization. Avoid wasting resources.

In the first aspect, there are also the following alternative designs;

Optionally, the first resource unit group includes a resource unit selected by the base station from a starting position in the reference signal resource group according to a preset order between resource units in the reference signal resource group. Or multiple resource units.

In the first aspect, there are also the following alternative designs;

Optionally, the second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.

In the first aspect, there are also the following alternative designs;

Optionally, the acquiring, by the base station, time-frequency information for indicating the first resource unit group includes:

Determining, by the base station, a quantity of resource units in the first resource unit group;

The base station maps the number of resource units in the first resource unit group to time-frequency information of the first resource unit group;

In the above method, when the base station sends the time-frequency information indicating the first resource unit group to the terminal device by using the downlink control channel, the network resource between the base station and the terminal device can be saved.

In the first aspect, there are also the following alternative designs;

Optionally, the reference signal resource group includes multiple reference signal resource sub-groups, and at least one of the reference signal resource sub-groups includes multiple resource units, where the multiple resource units are arranged according to the preset order. Multiple resource units;

The acquiring, by the base station, time-frequency information for indicating the first resource unit group includes:

Determining, by the base station, a quantity of reference signal resource subgroups in which the resource units mapped by the reference signal are located in the reference signal resource group;

The base station maps the quantity to time-frequency information of the first resource unit group;

When the base station sends the time-frequency information indicating the first resource unit group to the terminal device by using the downlink control channel, the base station can further save network resources between the base station and the terminal device.

According to a second aspect of the embodiments of the present invention, a resource mapping method is provided, where the method includes:

The terminal device receives the time-frequency information that is sent by the base station and is used by the base station to indicate the first resource unit group; the first resource unit group includes the resource unit that is referenced by the reference signal in the reference signal resource group;

Determining, by the terminal device, a second resource unit group that maps downlink data of the terminal device in the reference signal resource group according to the time-frequency information;

The terminal device acquires the downlink data in the second resource unit group.

In the second aspect, there are also the following alternative designs;

Optionally, the first resource unit group includes one resource unit or multiple determined from a starting position in the reference signal resource group according to a preset order between resource units in the reference signal resource group. Resource unit.

In the second aspect, there are also the following alternative designs;

Optionally, the time-frequency information of the first resource unit group is used to indicate the number of resource units in the first resource unit group.

In the second aspect, there are also the following alternative designs;

The terminal device receives time-frequency information that is sent by the base station and is used by the base station to indicate the first resource unit group, and includes:

Receiving, by the terminal device, a quantity of reference signal resource subgroups in which the resource units mapped by the reference signal in the reference signal resource group are located by the base station;

The terminal device maps the quantity to time-frequency information for indicating the first resource element group.

According to a third aspect of the embodiments of the present invention, a base station is provided, where the base station includes: a processor and a transmitter,

The processor is configured to configure a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The processor is further configured to map a reference signal on the first resource element group in the reference signal resource group;

The processor is further configured to map downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group does not include the reference signal resource group a resource unit in the first resource unit group;

The processor is further configured to acquire time-frequency information used to indicate the first resource unit group;

The transmitter is configured to send the time-frequency information to the terminal device by using a downlink control channel.

In the third aspect, there are also the following alternative designs;

Optionally, the first resource unit group includes a resource unit selected by the base station from a starting position in the reference signal resource group according to a preset order between resource units in the reference signal resource group. Or multiple Resource unit.

In the third aspect, there are also the following alternative designs;

Optionally, the processor is further configured to:

Determining a quantity of resource units in the first resource unit group;

Mapping the number of resource units in the first resource unit group to time-frequency information of the first resource unit group;

In the third aspect, there are also the following alternative designs;

The processor is further configured to:

Determining, in the reference signal resource group, a quantity of reference signal resource subgroups in which the resource units of the reference signal mapping are located;

Mapping the quantity to time-frequency information of the first resource unit group;

According to a fourth aspect of the embodiments of the present invention, a terminal device is provided, where the terminal device includes: a receiver and a processor;

The receiver is configured to receive time-frequency information that is sent by the base station by using a downlink control channel, and is used to indicate a first resource unit group, where the first resource unit group includes a reference signal resource group in a reference signal resource group. ;

The processor, configured to determine, in the reference signal resource group, mapping the terminal according to the time-frequency information a second resource unit group of downlink data of the device;

The processor is further configured to acquire the downlink data in the second resource unit group.

In the fourth aspect, there are also the following alternative designs;

The receiver is also used to:

And receiving, by the base station, a quantity of reference signal resource subgroups in which the resource units mapped by the reference signal in the reference signal resource group are located.

The base station sends, by using the downlink control channel, the terminal device to indicate the first resource list. When the time-frequency information of the tuple is used, the network resources between the base station and the terminal device can be further saved.

According to a fifth aspect of the embodiments of the present invention, a base station is provided, where the base station includes: a processing unit and a sending unit;

The processing unit is configured to configure a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The processing unit is further configured to map a reference signal on the first resource element group in the reference signal resource group;

The processing unit is further configured to map downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group does not include the reference signal resource group a resource unit in the first resource unit group;

The processing unit is further configured to acquire time-frequency information used to indicate the first resource unit group;

The sending unit is configured to send the time-frequency information to the terminal device by using a downlink control channel.

In the fifth aspect, there are also the following alternative designs;

Optionally, the processing unit is further configured to:

Determining a quantity of resource units in the first resource unit group;

Mapping the number of resource units in the first resource unit group to time-frequency information of the first resource unit group.

In the fifth aspect, there are also the following alternative designs;

The processing unit is further configured to:

The quantity is mapped to time-frequency information of the first resource unit group.

According to a sixth aspect of the embodiments of the present invention, a terminal device is provided, where the terminal device includes: a receiving unit and a processing unit;

The receiving unit is configured to receive time-frequency information that is sent by the base station to the first resource unit group by using a downlink control channel, where the first resource unit group includes a reference signal mapped resource unit in the reference signal resource group. ;

The processing unit is configured to determine, according to the time-frequency information, a second resource unit group that maps downlink data of the terminal device in the reference signal resource group;

The processing unit is further configured to acquire the downlink data in the second resource unit group.

In the sixth aspect, there are also the following alternative designs;

The receiving unit is further configured to:

The above general description and the following detailed description are intended to be illustrative and not restrictive.

DRAWINGS

The accompanying drawings, which are incorporated in the specification of FIG

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, for the field For the skilled person, other drawings can be obtained from these drawings without paying for creative labor.

FIG. 1 is a schematic diagram of a network architecture according to an exemplary embodiment;

FIG. 2 is a flowchart of a resource mapping method according to an exemplary embodiment;

FIG. 3 is a block diagram of a base station according to an exemplary embodiment;

FIG. 4 is a block diagram of a terminal device according to an exemplary embodiment;

FIG. 5 is a block diagram of a base station according to an exemplary embodiment;

FIG. 6 is a block diagram of a terminal device according to an exemplary embodiment.

detailed description

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the invention. Instead, they are merely examples of devices and methods consistent with aspects of the embodiments of the invention as detailed in the appended claims.

The resource configuration method provided by the embodiment of the present invention can be applied to an LTE (Long Term Evolution) communication system, for example, TDD-LTE (Time Division Duplex Long Term Evolution) or FDD-LTE (Frequency Division Duplex). Long Term Evolution, long-term evolution of frequency division duplex, can also be applied to other communication systems, such as WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access), GSM (Global System for Mobile Communication) and 5G (Fifth Generation). The multiple systems listed above are only schematic illustrations of the embodiments of the present invention, and the method provided by the present invention is also applicable to other suitable communication systems, and the present invention is not limited thereto.

The embodiment of the present invention is described by taking an LTE communication system as an example. As shown in FIG. 1 , FIG. 1 is a schematic diagram of a network architecture that can be applied to a resource configuration method according to an embodiment of the present invention. FIG. 1 includes: a base station 1 and a terminal device 2, where the terminal device is located in the coverage of the base station 1 The terminal device 2 is in communication connection with the base station 1.

In the prior art, when the base station needs to send less CSI-RS to the UE, the base station tends to only A resource unit in a resource group is allocated as a resource unit for transmitting a CSI-RS, which results in an idle resource unit in the resource group, thereby causing waste of resources and low resource utilization. To this end, in order to improve resource utilization, as shown in FIG. 2, in one embodiment of the present invention, a resource mapping method is provided.

FIG. 2 is a flowchart of a resource mapping method according to an exemplary embodiment. As shown in FIG. 2, the method includes the following steps.

In step S101, the base station configures a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The terminal device may be a UE or the like.

In step S102, the base station maps the reference signal on the first resource element group in the reference signal resource group;

In the embodiment of the present invention, the first resource unit group includes one resource unit or multiple resource units selected by the base station from a starting position in the reference signal resource group according to a preset order between the resource units in the reference signal resource group. .

In the embodiment of the present invention, when the base station maps the reference signal in the reference signal resource group, the base station needs to start from the reference signal resource group in a preset order between the resource units in the reference signal resource group. One or more resource units are selected; then the selected resource units are grouped into a first resource unit group, and the reference signals are mapped on the first resource unit group.

For example, it is assumed that the reference signal resource group includes four resource units, which are resource unit 1, resource unit 2, resource unit 3, and resource unit 4, and the preset order between the four resource units is resource unit 1, resource unit. 2. Resource unit 3 and resource unit 4. When the base station needs to map two 2 reference signals in the reference signal resource group, since the resource unit 1 and the resource unit 2 are located in the first two digits of the preset order in the resource group, the base station may allocate the resource unit 1 and the resource unit 2 The first resource unit group is composed, and then the reference signals are mapped in the resource unit 1 and the resource unit 2.

In the embodiment of the present invention, after the base station maps the reference signal in the first resource unit group, the base station needs to pass the reference signal in order to enable the terminal device to learn that the base station maps the reference signal in the first resource unit group in the reference signal resource group. The downlink control channel sends time-frequency information indicating the first resource unit group to the terminal device.

When the terminal device receives the time-frequency information that is sent by the base station and is sent by the base station to indicate the first resource unit group, the terminal device may determine the first resource unit group in the reference signal resource group according to the time-frequency information. A reference signal is then acquired in the first set of resource elements.

In step S103, the base station maps the terminal device on the second resource element group in the reference signal resource group. Downstream data; the resource element in the first resource unit group in the reference signal resource group is not included in the second resource unit group;

In the embodiment of the present invention, the second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.

Wherein, when the resource unit in the first resource unit group is only a part of the resource unit in the reference signal resource group, after the base station maps the reference signal on the first resource unit group, there are still unmapped resources in the reference signal resource group. a unit, therefore, in order to improve resource utilization, the base station may form a resource unit other than the first resource unit group in the reference signal resource group to form a second resource unit group, and then map the downlink data of the terminal device on the second resource unit group. .

For example, in the above example, the base station has mapped the reference signal on the resource unit 1 and the resource unit 2 included in the first resource element group in the reference signal resource group, and at this time, the resource unit 3 and the resource unit 4 are not mapped any Data, therefore, the base station can group the resource unit 3 and the resource unit 4 into a second resource unit group, and map the downlink data of the terminal device on the second resource unit group.

In step S104, the base station acquires time-frequency information for indicating the first resource unit group;

In the embodiment of the present invention, after the base station maps the downlink data of the terminal device on the second resource unit group in the reference signal resource group, in order to enable the terminal device to obtain the downlink data of the terminal device on the second unit resource group, The base station needs to notify the terminal device which resource units in the reference signal resource group are mapped with the downlink data of the terminal device.

In an embodiment of the present invention, the base station may generate a bitmap for indicating a distribution position of the resource unit in the second resource unit group in the reference signal resource group; and then notify the terminal device of the reference signal resource group through the bitmap. Which resource units map the downlink data of the terminal device.

For example, in the above example, the bitmap generated by the base station may be “0011”, and then the base station may send the bitmap “0011” to the terminal device through the downlink control channel. When the terminal device receives the bitmap bitmap "0011", the balance determines, according to the bitmap "0011", the resource unit 3 and the resource unit 4 of the last 2 bits in the preset order in the reference resource group are the downlinks mapped to the terminal device. A resource unit of data, and acquires downlink data in resource unit 3 and resource unit 4.

However, there are several resource elements in the reference signal resource group, and there are several values in the bitmap. Each value in the bitmap occupies 1 bit. In the above example, the bitmap "0011" occupies 4 bits, and the bit The number is higher, and the network resources between the base station and the terminal device that need to be occupied when transmitting the bitmap through the downlink control channel are large.

Therefore, in order to save network resources between the base station and the terminal device, in another embodiment of the present invention, the base station may determine the number of resource units in the first resource unit group in the reference signal resource group; and then notify the terminal by using the quantity. The downlink data of the terminal device is mapped on which resource units in the device reference signal resource group.

After the base station configures the reference signal resource group to the terminal device, the base station sets a preset sequence for the resource unit in the reference signal resource group, and the present invention sets the preset order of the resource unit in the reference signal resource group by the base station. Not limited. For example, each resource unit in the reference signal resource group has time-frequency information, and the time-frequency information of each resource unit is different. The base station may use the sequence of time-frequency information of the resource units in the reference signal resource group as a reference signal. The resource unit in the resource group sets the preset order. And, because the first resource unit group is a resource unit or a plurality of resource units selected by the base station from a starting position in the reference signal resource group according to a preset order between the resource units in the reference signal resource group. Therefore, in this step, the base station may determine the number of resource units in the first resource unit group in the reference signal resource group; and then map the number of resource units in the first resource unit group to the time-frequency information of the first resource unit group. .

Secondly, the base station notifies the terminal device of the total number of resource units in the reference signal resource group and the preset sequence between the resource units in the reference signal resource group by static signaling, and therefore, when the terminal device receives the base station and sends the Referring to the number of resource units in the first reference resource unit group in the reference signal resource group, the terminal device according to the total number of resource units in the reference signal resource group, and the preset order between the resource units in the reference signal resource group And determining, by using the number of the resource units in the first resource unit group, which of the reference signal resource groups are mapped with the downlink data of the terminal device, and acquiring the downlink data in the determined resource unit.

Therefore, in this step, the terminal device may receive the number of resource units in the first resource unit group in the reference signal resource group sent by the base station; and then map the quantity to the time frequency used to indicate the first resource unit group. information.

For example, it is assumed that the reference signal resource group includes four resource units, which are resource unit 1, resource unit 2, resource unit 3, and resource unit 4, and the preset order between the four resource units is resource unit 1, resource unit. 2. The resource unit 3 and the resource unit 4, wherein the base station maps the reference signal on the resource unit 1 and the resource unit 2, and maps the downlink data of the terminal device on the resource unit 3 and the resource unit 4, which can be seen in the reference signal resource group. The number of resource units in the first resource unit group is 2. Therefore, the terminal device can infer that the first two resource units in the preset order in the reference signal resource group are the first resource unit group that maps the reference signal. And the last two resource units in the preset sequence in the reference signal resource group are the second resource unit group that maps the downlink data of the terminal device, and therefore, the terminal device can obtain the last two resource units in the reference signal resource group. Get the downlink data.

In the embodiment of the present invention, when the base station sends data to the terminal device through the downlink control channel, the base station can only send a binary value. Therefore, when the base station needs to send the number of resource units in the first resource unit group to the terminal device through the downlink control channel, , you need to convert the decimal number "2" to the binary number "10".

Since the binary number "10" occupies only 2 bits, when the binary number "10" is transmitted to the terminal device through the downlink control channel, only the 2-bit network resource between the base station and the terminal device is occupied, and the number of occupied bits is less than the bit. The number of bits occupied by the picture can save network resources between the base station and the terminal device.

In step S105, the base station sends time-frequency information to the terminal device through the downlink control channel;

In step S106, the terminal device receives time-frequency information that is sent by the base station by using the downlink control channel and is used to indicate the first resource unit group.

The first resource unit group includes resource elements mapped by reference signals in the reference signal resource group.

In the embodiment of the present invention, the terminal device receives the number of resource units in the first resource unit group in the reference signal resource group sent by the base station.

In step S107, the terminal device determines, in the reference signal resource group, a second resource unit group that maps downlink data of the terminal device according to the time-frequency information;

Specifically, the terminal device may select, according to a preset order between the resource units in the reference signal resource group, a quantity of resource units from a starting position in the reference signal resource group; and then select the selected resource unit into the first resource unit group. And then the resource unit other than the first resource unit group in the reference signal resource group is composed of the second resource unit.

The base station notifies the terminal device of the total number of resource units in the reference signal resource group and the preset sequence between the resource units in the reference signal resource group by using static signaling, and therefore, when the terminal device receives the base station and sends the Referring to the number of resource units in the first reference resource unit group in the reference signal resource group, the terminal device according to the total number of resource units in the reference signal resource group, and the preset order between the resource units in the reference signal resource group And determining, by using the number of the resource units in the first resource unit group, which of the reference signal resource groups are mapped with the downlink data of the terminal device, and acquiring the downlink data in the determined resource unit.

For example, it is assumed that the reference signal resource group includes four resource units, which are resource unit 1, resource unit 2, resource unit 3, and resource unit 4, and the preset order between the four resource units is resource unit 1, resource unit. 2. The resource unit 3 and the resource unit 4, wherein the base station maps the reference signal on the resource unit 1 and the resource unit 2, and maps the downlink data of the terminal device on the resource unit 3 and the resource unit 4, which can be seen in the reference signal resource group. The number of resource units in the first resource unit group is 2, so the terminal device can infer the reference letter The first two resource units in the preset order in the number resource group are the first resource unit group in which the reference signal is mapped, and the last two resource units in the preset order in the reference signal resource group are mapped terminals. A second resource unit group of downlink data of the device. Therefore, the terminal device can acquire downlink data from the last two resource units in the reference signal resource group.

In step S108, the terminal device acquires downlink data in the second resource element group.

In the embodiment of the present invention, after the base station maps the reference signal in the first resource unit group in the reference signal resource group, if the resource unit in the first resource unit group is only part of the resource unit in the reference signal resource group, If there are still unmapped resource units in the reference signal resource group, the base station may form the unmapped resource unit into the second resource unit group, and map the downlink data of the terminal device in the second resource unit group, so that the resource may be improved. Utilization, avoiding waste of resources.

In another embodiment of the present invention, the reference signal resource group includes a plurality of reference signal resource subgroups, and at least one reference signal resource subgroup includes a plurality of reference signal resource subgroups. Each resource unit includes a plurality of resource units in each of the reference signal resource subgroups, which are a plurality of resource units arranged in a preset order.

When the base station configures the reference signal resource group to the terminal device, and when the number of resource units in the reference signal resource group is greater than or equal to three, the base station may divide the resource unit in the reference signal resource group into at least two reference signal resources. And subgroup, and notifying the terminal device of the number of reference signal resource subgroups in the reference signal resource group by signaling, and referring to a preset sequence between the signal resource subgroups. The at least one reference signal resource subgroup includes multiple resource units, and the number of resource units in any reference signal resource subgroup may be the same or different.

Therefore, the step S104 may be: the base station determines, in the reference signal resource group, the number of reference signal resource subgroups in which the resource unit of the reference signal mapping is located; the base station maps the quantity to the time-frequency information of the first resource unit group;

For example, it is assumed that the resource group includes four resource units, which are resource unit 1, resource unit 2, resource unit 3, and resource unit 4, and the preset order among the four resource units is resource unit 1, resource unit 2, Resource unit 3 and resource unit 4, assuming that the base station groups resource unit 1 and resource unit 2 into one reference signal resource subgroup, is subgroup 1, and combines resource unit 3 and resource unit 4 into a reference signal resource subgroup. Group 2 has a total of two reference signal resource subgroups, and the preset order between the two reference signal resource subgroups is subgroup 1 and subgroup 2. The base station maps the reference signal on the resource unit 1 and the resource unit 2 respectively, and maps the downlink data of the terminal device on the resource unit 3 and the resource unit 4, respectively, and the reference signal resource in which the resource unit 1 and the resource unit 2 of the reference signal map are located. The subgroup is subgroup 1, the downlink data mapping resource of the terminal device If the reference signal resource sub-group in which the unit 3 and the resource unit 4 are located is the sub-group 2, the number of reference signal resource sub-groups in which the resource unit of the reference signal mapping is located is 1, and the reference signal of the resource unit where the base station can map the reference signal is located. The number of resource subgroups "1" is mapped to the time-frequency information of the first resource unit group.

The base station needs to convert the decimal number "1" into a binary number "1". Since the binary number "1" occupies only 1 bit, when the base station transmits the binary number "1" to the terminal device through the downlink control channel, only It occupies less network resources between the base station and the terminal device. Thereby, network resources between the base station and the terminal device can be further saved.

Correspondingly, step S106 may be: the terminal device may receive, by the base station, the number of reference signal resource subgroups in which the resource unit mapped by the reference signal in the reference signal resource group is located; and then map the quantity to indicate the first resource unit. Group time-frequency information.

FIG. 3 is a block diagram of a base station, according to an exemplary embodiment. Referring to FIG. 3, the base station includes: a processor 11 and a transmitter 12;

The processor 11 is configured to configure a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The processor 11 is further configured to map a reference signal on the first resource element group in the reference signal resource group;

The processor 11 is further configured to map downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group does not include the reference signal resource group Resource units in the first resource unit group;

The processor 11 is further configured to acquire time-frequency information used to indicate the first resource unit group;

The transmitter 12 is configured to send the time-frequency information to the terminal device by using a downlink control channel.

The first resource unit group includes the base station according to the resource unit in the reference signal resource group. A preset order between one resource unit or a plurality of resource units selected from a starting position in the reference signal resource group.

The second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.

The processor 11 is further configured to:

Determining a quantity of resource units in the first resource unit group;

The reference signal resource group includes a plurality of reference signal resource subgroups, and at least one of the reference signal resource subgroups includes a plurality of resource units, and the plurality of resource units are arranged according to the preset order. Resource unit;

The processor 11 is further configured to:

FIG. 4 is a block diagram of a terminal device, according to an exemplary embodiment. Referring to FIG. 4, the terminal device includes: a receiver 21 and a processor 22;

The receiver 21 is configured to receive time-frequency information that is sent by the base station and is used by the base station to indicate the first resource unit group, where the first resource unit group includes the reference signal mapping resource in the reference signal resource group. unit;

The processor 22 is configured to determine, according to the time-frequency information, a second resource unit group that maps downlink data of the terminal device in the reference signal resource group;

The processor 22 is further configured to acquire the downlink data in the second resource unit group.

The first resource unit group includes one resource unit or multiple resource units determined from a starting position in the reference signal resource group according to a preset order between resource units in the reference signal resource group. .

The time-frequency information of the first resource unit group is used to indicate the number of resource units in the first resource unit group.

The receiver 21 is further configured to:

FIG. 5 is a block diagram of a base station, according to an exemplary embodiment. Referring to FIG. 5, the base station includes: a processing unit 31 and a transmitting unit 32;

The processing unit 31 is configured to configure a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The processing unit 31 is further configured to map parameters on the first resource element group in the reference signal resource group. Test signal

The processing unit 31 is further configured to map downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group does not include the reference signal resource group Resource units in the first resource unit group;

The processing unit 31 is further configured to acquire time-frequency information used to indicate the first resource unit group;

The sending unit 32 is configured to send the time-frequency information to the terminal device by using a downlink control channel.

The first resource unit group includes one resource unit selected by the base station from a starting position in the reference signal resource group according to a preset order between resource units in the reference signal resource group. Resource units.

The processing unit 31 is further configured to:

Determining a quantity of resource units in the first resource unit group;

The processing unit 31 is further configured to:

FIG. 6 is a block diagram of a terminal device, according to an exemplary embodiment. Referring to Figure 6, the terminal device includes: a receiving unit 41 and a processing unit 42;

The receiving unit 41 is configured to receive time-frequency information that is sent by the base station by using a downlink control channel, and is used to indicate a first resource unit group, where the first resource unit group includes a resource mapped by a reference signal in the reference signal resource group. unit;

The processing unit 42 is configured to determine, according to the time-frequency information, a second resource unit group that maps downlink data of the terminal device in the reference signal resource group;

The processing unit 42 is further configured to acquire the downlink data in the second resource unit group.

The receiving unit 41 is further configured to:

Receiving, by the device, the number of reference signal resource subgroups in which the resource units mapped by the reference signal in the reference signal resource group are located by the base station.

With regard to the apparatus in the above embodiments, the specific manner in which the respective modules perform the operations has been described in detail in the embodiment relating to the method, and will not be explained in detail herein.

Other embodiments of the invention will be apparent to those skilled in the <RTIgt; The present application is intended to cover any variations, uses, or adaptations of the embodiments of the invention, which are in accordance with the general principles of the embodiments of the invention and Common knowledge or common technical means. The specification and examples are to be considered as illustrative only,

It is to be understood that the embodiments of the present invention are not limited to the precise structures and The scope of the embodiments of the invention is limited only by the appended claims.

Claims

A resource mapping method, the method comprising:

The base station configures a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The base station mapping a reference signal on the first resource element group in the reference signal resource group;

Mapping, by the base station, downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group not including the first resource in the reference signal resource group a resource unit in a unit group;

The base station acquires time-frequency information used to indicate the first resource unit group;

The base station sends the time-frequency information to the terminal device by using a downlink control channel.
The method according to claim 1, wherein the first resource unit group comprises the base station from the reference signal resource group according to a preset order between resource units in the reference signal resource group. The starting location selects one resource unit or multiple resource units.
The method according to claim 1 or 2, wherein the second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.
The method according to any one of claims 1 to 3, wherein the base station acquires time-frequency information for indicating the first resource unit group, including:

Determining, by the base station, a quantity of resource units in the first resource unit group;

The base station maps the number of resource units in the first resource unit group to time-frequency information of the first resource unit group.
The method according to any one of claims 1 to 4, wherein the reference signal resource group includes a plurality of reference signal resource subgroups, and at least one of the reference signal resource subgroups includes a plurality of resource units. The plurality of resource units are a plurality of resource units arranged in the preset order;

The acquiring, by the base station, time-frequency information for indicating the first resource unit group includes:

Determining, by the base station, a quantity of reference signal resource subgroups in which the resource units mapped by the reference signal are located in the reference signal resource group;

The base station maps the quantity to time-frequency information of the first resource unit group.
A resource mapping method, the method comprising:

The terminal device receives the time-frequency information that is sent by the base station and is used by the base station to indicate the first resource unit group; the first resource unit group includes the resource unit that is referenced by the reference signal in the reference signal resource group;

Determining, by the terminal device, a second resource unit group that maps downlink data of the terminal device in the reference signal resource group according to the time-frequency information;

The terminal device acquires the downlink data in the second resource unit group.
The method according to claim 6, wherein the first resource unit group comprises a start from the reference signal resource group according to a preset order between resource units in the reference signal resource group. A resource unit or multiple resource units determined by location.
The method according to claim 6 or 7, wherein the second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.
The method according to any one of claims 6-8, wherein the time-frequency information of the first resource unit group is used to indicate the number of resource units in the first resource unit group.
The method according to any one of claims 6 to 9, wherein the reference signal resource group includes a plurality of reference signal resource subgroups, and at least one of the reference signal resource subgroups includes a plurality of resource units, The resource units are a plurality of resource units arranged in the preset order;

The terminal device receives time-frequency information that is sent by the base station and is used by the base station to indicate the first resource unit group, and includes:

Receiving, by the terminal device, the number of reference signal resource subgroups in which the resource units mapped by the reference signal in the reference signal resource group are located by the base station.
A base station, the base station includes: a processing unit and a sending unit,

The processing unit is configured to configure a reference signal resource group to the terminal device, where the reference signal resource group includes multiple resource units;

The processing unit is further configured to map a reference signal on the first resource element group in the reference signal resource group;

The processing unit is further configured to map downlink data of the terminal device on a second resource unit group in the reference signal resource group; the second resource unit group does not include the reference signal resource group a resource unit in the first resource unit group;

The processing unit is further configured to acquire time-frequency information used to indicate the first resource unit group;

The sending unit is configured to send the time-frequency information to the terminal device by using a downlink control channel.
The base station according to claim 11, wherein the first resource unit group comprises the base station from the reference signal resource group according to a preset sequence between resource units in the reference signal resource group. The starting location selects one resource unit or multiple resource units.
The base station according to claim 11 or 12, wherein the second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.
The base station according to any one of claims 11 to 13, wherein the processing unit is further configured to:

Determining a quantity of resource units in the first resource unit group;

Mapping the number of resource units in the first resource unit group to time-frequency information of the first resource unit group.
The base station according to any one of claims 11 to 14, wherein the reference signal resource group includes a plurality of reference signal resource subgroups, and at least one of the reference signal resource subgroups includes a plurality of resource units. The plurality of resource units are a plurality of resource units arranged in the preset order;

The processing unit is further configured to:

Determining, in the reference signal resource group, a quantity of reference signal resource subgroups in which the resource units of the reference signal mapping are located;

The quantity is mapped to time-frequency information of the first resource unit group.
A terminal device, comprising: a receiving unit and a processing unit;

The receiving unit is configured to receive time-frequency information that is sent by the base station to the first resource unit group by using a downlink control channel, where the first resource unit group includes a reference signal mapped resource unit in the reference signal resource group. ;

The processing unit is configured to determine, according to the time-frequency information, a second resource unit group that maps downlink data of the terminal device in the reference signal resource group;

The processing unit is further configured to acquire the downlink data in the second resource unit group.
The terminal device according to claim 16, wherein the first resource unit group comprises, according to a preset sequence between resource units in the reference signal resource group, from the reference signal resource group One resource unit or multiple resource units determined by the starting position.
The terminal device according to claim 16 or 17, wherein the second resource unit group includes resource units other than the first resource unit group in the reference signal resource group.
The terminal device according to any one of claims 16 to 18, wherein the time-frequency information of the first resource unit group is used to indicate the number of resource units in the first resource unit group.
The terminal device according to any one of claims 16 to 19, wherein the reference signal resource group includes a plurality of reference signal resource subgroups, and at least one of the reference signal resource subgroups Include a plurality of resource units, the plurality of resource units being a plurality of resource units arranged in the preset order;

The receiving unit is further configured to:

And receiving, by the base station, a quantity of reference signal resource subgroups in which the resource units mapped by the reference signal in the reference signal resource group are located.