CN103517429B - Data transmission method and narrowband terminal, base station - Google Patents

Abstract

The embodiment of the present application provides data transmission method and narrowband terminal, base station.On the one hand, the embodiment of the present application obtains resource indication information by narrowband terminal, described resource indication information in order to indicate base station to be the distribution of described narrowband terminal the subband that can support of described narrowband terminal on resource, described subband is a part for the system broad that ordinary terminal can be supported, and the power consumption of described narrowband terminal is less than described ordinary terminal, and then according to described resource indication information, determine the resource on described subband and described subband, make the described narrowband terminal can be on described subband, utilize the resource on described subband, data are transmitted with described base station, it is achieved thereby that when narrowband terminal exists multiple subband, scheduling narrowband terminal at least part of subband transmission data wherein, solve base station in prior art and cannot dispatch, at current sub-band, the problem that narrowband terminal carries out data transmission at other subbands.

Description

Data transmission method and narrowband terminal, base station

technical field

This application relates to communication technology, in particular to a data transmission method, a narrowband terminal, and a base station.

Background technique

In wireless communication systems such as Long Term Evolution (LTE) system and Long Term Evolution Advanced (LTE-A) system, it supports Machine Type Communications (MTC) applications with a large number of terminals , in order to reduce the cost of the MTC terminal, it can be stipulated that the MTC terminal can only perform signaling or data processing within a small bandwidth (that is, a subband in the system broadband), so the MTC terminal can be called a narrowband terminal . In the prior art, the base station may send resource indication information to the narrowband terminal through a control channel, so as to schedule the narrowband terminal to perform data transmission in the current subband.

However, when a narrowband terminal has multiple subbands, how to schedule at least some of the subbands in which the narrowband terminal transmits data becomes a problem.

Contents of the invention

Aspects of the present application provide a data transmission method, a narrowband terminal, and a base station, so as to implement data transmission on at least some of the subbands in which the narrowband terminal has multiple subbands.

In one aspect of the present application, a data transmission method is provided, including:

The narrowband terminal obtains resource indication information, and the resource indication information is used to indicate the resources allocated by the base station to the narrowband terminal on the subband that the narrowband terminal can support, and the subband is a part of the system broadband that the common terminal can support , and the power consumption of the narrowband terminal is lower than that of the normal terminal;

The narrowband terminal determines the subband and resources on the subband according to the resource indication information;

The narrowband terminal uses resources on the subband to transmit data with the base station on the subband.

Another aspect of the present application provides a data transmission method, including:

The base station allocates resources on a subband that the narrowband terminal can support to the narrowband terminal, where the subband is a part of the system broadband that can be supported by a normal terminal, and the power consumption of the narrowband terminal is lower than that of the normal terminal;

The base station sends resource indication information to the narrowband terminal to indicate the subband and resources on the subband;

The base station transmits data with the narrowband terminal on the subband by using resources on the subband.

Another aspect of the present application provides a narrowband terminal, including:

An obtaining unit, configured to obtain resource indication information, where the resource indication information is used to indicate the resources allocated by the base station to the narrowband terminal on the subband that the narrowband terminal can support, and the subband is a system that the common terminal can support a part of broadband, and the power consumption of the narrowband terminal is lower than that of the normal terminal;

a determining unit, configured to determine the subband and resources on the subband according to the resource indication information;

A transmission unit, configured to transmit data with the base station on the sub-band by using resources on the sub-band.

Another aspect of the present application provides a base station, including:

An allocation unit, configured to allocate resources on a subband that the narrowband terminal can support to the narrowband terminal, where the subband is a part of the system broadband that can be supported by a common terminal, and the power consumption of the narrowband terminal is lower than that of the normal terminal terminal;

a transmission unit, configured to send resource indication information to the narrowband terminal to indicate the subband and resources on the subband, and use the resources on the subband on the subband to communicate with the Narrowband terminals transmit data.

On the one hand, it can be known from the above technical solution that in this embodiment of the present application, the narrowband terminal obtains resource indication information, and the resource indication information is used to indicate the resource on the subband that the narrowband terminal can support allocated by the base station for the narrowband terminal, The subband is a part of the system broadband that can be supported by ordinary terminals, and the power consumption of the narrowband terminal is lower than that of the ordinary terminal, and then according to the resource indication information, determine the subband and the Resources, so that the narrowband terminal can use the resources on the subband to transmit data with the base station on the subband, so that when the narrowband terminal has multiple subbands, at least part of the narrowband terminal in which the narrowband terminal is scheduled Sub-band transmission data solves the problem in the prior art that the base station cannot schedule narrowband terminals to perform data transmission on other sub-bands in the current sub-band.

On the other hand, it can also be known from the above technical solution that in the embodiment of the present application, the base station allocates resources on the subbands that the narrowband terminal can support to the narrowband terminal in the embodiment of the present application, and the subband is a part of the system broadband that the common terminal can support, and The power consumption of the narrowband terminal is lower than that of the ordinary terminal, and then sends resource indication information to the narrowband terminal to indicate the subband and the resources on the subband, so that the base station can On the other hand, the resources on the subbands are used to transmit data with the narrowband terminal, so that when the narrowband terminal has multiple subbands, at least part of the subbands in which the narrowband terminal is scheduled to transmit data solves the problem of the base station in the prior art. The problem that the narrowband terminal cannot be scheduled for data transmission in other subbands in the current subband.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic flow diagram of a data transmission method provided by an embodiment of the present application;

FIG. 2 is a schematic flowchart of a data transmission method provided by another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a narrowband terminal provided by another embodiment of the present application;

FIG. 4 is a schematic structural diagram of a base station provided by another embodiment of the present application.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The technical scheme of the present invention can be applied to wireless communication systems such as LTE system or LTE-A system. The narrowband terminal therein may be a user equipment (User Equipment, UE) in the LTE system or the LTE-A system; the base station therein may be an eNB in the LTE system or the LTE-A system.

FIG. 1 is a schematic flowchart of a data transmission method provided by an embodiment of the present application, as shown in FIG. 1 .

101. The narrowband terminal obtains resource indication information, and the resource indication information is used to indicate resources allocated by the base station to the narrowband terminal on the subband that the narrowband terminal can support, and the subband is the system broadband that the common terminal can support and the power consumption of the narrowband terminal is lower than that of the normal terminal.

102. The narrowband terminal determines the subband and resources on the subband according to the resource indication information.

103. The narrowband terminal uses resources on the subband to transmit data with the base station on the subband.

Specifically, the resource indication information may include but not limited to:

subband information and first resource allocation information, the subband information is used to indicate the subband, and the first resource allocation information is used to indicate resources on the subband; or

Second resource allocation information, where the second resource allocation information is used to indicate resources on the subband.

Optionally, in a possible implementation of this embodiment, in 101, the narrowband terminal may specifically obtain the subband information, and receive the first resource allocation information sent by the base station through a control channel . Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in downlink control information (Downlink Control Information, DCI), for example, a carrier indicator field (Carrier Indicator Field, CIF) field and/or resource block allocation (Resource block Assignment, RA) field; or the first resource allocation information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, in 101, the narrowband terminal may specifically receive the subband information sent by the base station through high-level signaling, and the subband information sent through a control channel. First resource allocation information. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the first resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

For example, the high-level signaling may be a radio resource control (Radio Resource Control, RRC) message, specifically, the subband information may be carried through an information element (Information Element, IE) in the RRC message, and the RRC message may be an existing There are RRC messages in the technology, such as RRC CONNECTION RECONFIGURATION messages, etc., which are not limited in this embodiment, and the subband information is carried by extending the IE of the existing RRC message, or the The above RRC message may also be different from the existing RRC message in the prior art.

For another example, the high-layer signaling may be a Media Access Control (Media Access Control, MAC) Control Element (Control Element, CE) message, and specifically, a new MAC CE message may be added to carry the subband information.

It can be understood that, all the high-level signaling involved in the following embodiments can adopt the above understanding manner.

Optionally, the base station may not send the subband information to the terminal through high-level signaling, and the narrowband terminal may also obtain the subband information according to pre-configuration, for example, a protocol agreement.

Optionally, in a possible implementation manner of this embodiment, in 101, the narrowband terminal may specifically receive the subband information and the first resource allocation information sent by the base station through a control channel. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the subband information and the first resource allocation information may be included in existing fields in the DCI, for example, the CIF field and/or the RA field; or the subband information and the first resource allocation information The information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, in 101, the narrowband terminal may specifically receive the second resource allocation information sent by the base station through a control channel. Specifically, the second resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the second resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

Wherein, the control channel may specifically be an enhanced physical downlink control channel (EnhancedPhysical Downlink Control Channel, ePDCCH).

It can be understood that, the subband that the base station allocates to the narrowband terminal that the narrowband terminal can support may be a subband that partially overlaps or fully overlaps with the subband mapped to the control channel; or may also be a subband that overlaps with the subband mapped to the control channel The subbands mapped to the control channel do not overlap, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, before step 101, the narrowband terminal may further receive first indication information sent by the base station, where the first indication information is used to indicate whether to perform spanning Subband scheduling, in the cross-subband scheduling, other subbands different from the subband are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the The subband information included in the resource indication information.

Specifically, the narrowband terminal may specifically receive the first indication information sent by the base station through high-layer signaling.

Optionally, in a possible implementation of this embodiment, in 101, the resource indication information received by the narrowband terminal may further include subframe information; correspondingly, in 103, the narrowband Specifically, the terminal may transmit data with the base station using resources on the subband in the subframe indicated by the subframe information, and the subframe includes the current subframe or the current subframe The subframe following the frame.

Specifically, before step 101, the narrowband terminal may further send the buffer capability or service delay requirement of the narrowband terminal to the base station, so that the base station , determining that the subframe is the current subframe or a subframe subsequent to the current subframe.

For example, if the buffering capability of the narrowband terminal is strong, it means that the narrowband terminal is capable of storing all Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe, and the base station may determine the The subframe indicated by the subframe information is the current subframe; if the buffer capability of the narrowband terminal is poor, it means that the narrowband terminal is unable to store all OFDM symbols of a subframe, and the base station can determine the The subframe indicated by the subframe information is a subframe after the current subframe, so that the narrowband terminal does not need to buffer all OFDM symbols of the subframe after the current subframe, which can effectively reduce the the cost of.

Optionally, before step 101, the narrowband terminal may further receive second indication information sent by the base station, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling Other subframes outside the subframe are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the subframe information included in the resource indication information according to the second indication information.

Specifically, the narrowband terminal may specifically receive the second indication information sent by the base station through high-layer signaling.

In this embodiment, the resource indication information is obtained through the narrowband terminal, and the resource indication information is used to indicate the resource allocated by the base station to the narrowband terminal on the subband that the narrowband terminal can support, and the subband is the subband that the common terminal can support. part of the supported system broadband, and the power consumption of the narrowband terminal is lower than that of the ordinary terminal, and then according to the resource indication information, determine the subband and the resources on the subband, so that the narrowband terminal can On the subbands, the resources on the subbands are used to transmit data with the base station, so that when the narrowband terminal has multiple subbands, at least part of the subbands in which the narrowband terminal is scheduled to transmit data solves the problem There is a problem in the technology that the base station cannot schedule the narrowband terminal to perform data transmission on other subbands in the current subband.

FIG. 2 is a schematic flowchart of a data transmission method provided by another embodiment of the present application, as shown in FIG. 2 .

201. The base station allocates resources on a subband that the narrowband terminal can support to the narrowband terminal, where the subband is a part of the system broadband that can be supported by a common terminal, and the power consumption of the narrowband terminal is lower than that of the common terminal.

202. The base station sends resource indication information to the narrowband terminal to indicate the subband and resources on the subband.

203. The base station transmits data with the narrowband terminal on the subband by using resources on the subband.

Specifically, the resource indication information may include but not limited to:

subband information and first resource allocation information, the subband information is used to indicate the subband, and the first resource allocation information is used to indicate resources on the subband; or

Second resource allocation information, where the second resource allocation information is used to indicate resources on the subband.

Optionally, in a possible implementation manner of this embodiment, in 202, the base station may specifically send the first resource allocation information to the narrowband terminal through a control channel, so that the narrowband terminal according to the Band information, and the first resource allocation information determine the subband and resources on the subband. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in downlink control information (Downlink Control Information, DCI), for example, a carrier indicator field (Carrier Indicator Field, CIF) field and/or RA field; or the The first resource allocation information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, in 202, the base station may specifically send the subband information to the narrowband terminal through high-level signaling, and send the subband information to the narrowband terminal through a control channel. Send the first resource allocation information. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the first resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

For example, the high-level signaling may be a radio resource control (Radio Resource Control, RRC) message, specifically, the subband information may be carried through an information element (Information Element, IE) in the RRC message, and the RRC message may be an existing There are RRC messages in the technology, such as RRC CONNECTION RECONFIGURATION messages, etc., which are not limited in this embodiment, and the subband information is carried by extending the IE of the existing RRC message, or the The above RRC message may also be different from the existing RRC message in the prior art.

For another example, the high-layer signaling may be a Media Access Control (Media Access Control, MAC) Control Element (Control Element, CE) message, and specifically, a new MAC CE message may be added to carry the subband information.

It can be understood that, all the high-level signaling involved in the following embodiments can adopt the above understanding manner.

Optionally, the base station may not send the subband information to the terminal through high-level signaling, and the narrowband terminal may also obtain the subband information according to pre-configuration, for example, a protocol agreement.

Optionally, in a possible implementation manner of this embodiment, in 202, the base station may specifically send the subband information and the first resource allocation information to the narrowband terminal through a control channel. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the subband information and the first resource allocation information may be included in existing fields in the DCI, for example, the CIF field and/or the RA field; or the subband information and the first resource allocation information The information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, in 202, the base station may specifically send the second resource allocation information to the narrowband terminal through a control channel. Specifically, the second resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the second resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

Wherein, the control channel may specifically be an enhanced physical downlink control channel (EnhancedPhysical Downlink Control Channel, ePDCCH).

It can be understood that, the subband that the base station allocates to the narrowband terminal that the narrowband terminal can support may be a subband that partially overlaps or fully overlaps with the subband mapped to the control channel; or may also be a subband that overlaps with the subband mapped to the control channel The subbands mapped to the control channel do not overlap, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, before step 202, the base station may further send first indication information to the narrowband terminal, where the first indication information is used to indicate whether to perform cross-subscriber Band scheduling, in the cross-subband scheduling, subbands different from the subband are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the resource indication information according to the first indication information Subband information contained in the above resource indication information.

Specifically, the base station may send the first indication information to the narrowband terminal through high-layer signaling.

Optionally, in a possible implementation of this embodiment, the resource indication information sent by the base station may further include subframe information; correspondingly, in 203, the base station may specifically include subframe information in the In the subframe indicated by the subframe information, on the subband, use the resources on the subband to transmit data with the narrowband terminal, and the subframe includes the current subframe or the subframe after the current subframe .

Specifically, before 202, the base station may further receive the buffer capability or service delay requirement of the narrowband terminal sent by the narrowband terminal, and then, the base station may Delay requirements, determining that the subframe is the current subframe or a subframe after the current subframe.

For example, if the buffering capability of the narrowband terminal is strong, it means that the narrowband terminal is capable of storing all Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe, and the base station may determine the The subframe indicated by the subframe information is the current subframe; if the buffer capability of the narrowband terminal is poor, it means that the narrowband terminal is unable to store all OFDM symbols of a subframe, and the base station can determine the The subframe indicated by the subframe information is a subframe after the current subframe, so that the narrowband terminal does not need to buffer all OFDM symbols of the subframe after the current subframe, which can effectively reduce the the cost of.

Optionally, before 201, the base station may further send second indication information to the narrowband terminal, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, Subframes other than the subframe are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the subframe information included in the resource indication information according to the second indication information.

Specifically, the base station may send the second indication information to the narrowband terminal through high-layer signaling.

In this embodiment, the base station allocates resources on the subband that the narrowband terminal can support to the narrowband terminal, the subband is a part of the system broadband that the common terminal can support, and the power consumption of the narrowband terminal is lower than the specified the common terminal, and then send resource indication information to the narrowband terminal to indicate the subband and the resources on the subband, so that the base station can use the resources on the subband on the subband , to transmit data with the narrowband terminal, so that when the narrowband terminal has multiple subbands, at least part of the subbands in which the narrowband terminal is scheduled to transmit data, solves the problem that the base station cannot schedule the narrowband terminal in the current subband in the prior art. Subband for data transmission issues.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Depending on the application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

FIG. 3 is a schematic structural diagram of a narrowband terminal provided by another embodiment of the present application. As shown in FIG. 3 , the narrowband terminal provided by this embodiment may include an obtaining unit 31 , a determining unit 32 and a transmitting unit 33 . Wherein, the obtaining unit 31 is used to obtain resource indication information, and the resource indication information is used to indicate the resources allocated by the base station to the narrowband terminal on the subbands that the narrowband terminal can support, and the subbands are supported by ordinary terminals part of the system broadband, and the power consumption of the narrowband terminal is lower than that of the normal terminal; the determination unit 32 is configured to determine the subband and the resources on the subband according to the resource indication information; the transmission unit 33 It is used to transmit data with the base station on the subband by using resources on the subband.

Specifically, the resource indication information may include but not limited to:

subband information and first resource allocation information, the subband information is used to indicate the subband, and the first resource allocation information is used to indicate resources on the subband; or

Second resource allocation information, where the second resource allocation information is used to indicate resources on the subband.

Optionally, in a possible implementation manner of this embodiment, the obtaining unit 31 may specifically obtain the subband information, and receive the first resource allocation information sent by the base station through a control channel. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in downlink control information (Downlink Control Information, DCI), for example, a carrier indicator field (Carrier Indicator Field, CIF) field and/or RA field; or The first resource allocation information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, the obtaining unit 31 may specifically receive the subband information sent by the base station through high-layer signaling, and the first resource allocation information sent through a control channel . Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the first resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

Optionally, in a possible implementation manner of this embodiment, the obtaining unit 31 may specifically receive the subband information and the first resource allocation information sent by the base station through a control channel. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the subband information and the first resource allocation information may be included in existing fields in the DCI, for example, the CIF field and/or the RA field; or the subband information and the first resource allocation information The information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, the obtaining unit 31 may specifically receive the second resource allocation information sent by the base station through a control channel. Specifically, the second resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the second resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

Wherein, the control channel may specifically be an enhanced physical downlink control channel (EnhancedPhysical Downlink Control Channel, ePDCCH).

It can be understood that, the subband that the base station allocates to the narrowband terminal that the narrowband terminal can support may be a subband that partially overlaps or fully overlaps with the subband mapped to the control channel; or may also be a subband that overlaps with the subband mapped to the control channel The subbands mapped to the control channel do not overlap, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, the obtaining unit 31 may further receive first indication information sent by the base station, where the first indication information is used to indicate whether to perform cross-subband scheduling. In the cross-subband scheduling, subbands different from the subband are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the resource indication information according to the first indication information The subband information contained in .

Specifically, the obtaining unit 31 may specifically receive the first indication information sent by the base station through high-layer signaling.

Optionally, in a possible implementation of this embodiment, the resource indication information received by the obtaining unit 31 may further include subframe information; correspondingly, the transmitting unit 33 may specify In the indicated subframe, on the subband, use resources on the subband to transmit data with the base station, where the subframe includes the current subframe or a subframe after the current subframe.

Specifically, the transmission unit 33 may further send the buffer capability or service delay requirement of the narrowband terminal to the base station, so that the base station determines the sub-terminal according to the buffer capability or service delay requirement of the narrowband terminal. A frame is the current subframe or a subframe after the current subframe.

For example, if the buffering capability of the narrowband terminal is strong, it means that the narrowband terminal is capable of storing all Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe, and the base station may determine the The subframe indicated by the subframe information is the current subframe; if the buffer capability of the narrowband terminal is poor, it means that the narrowband terminal is unable to store all OFDM symbols of a subframe, and the base station can determine the The subframe indicated by the subframe information is a subframe after the current subframe, so that the narrowband terminal does not need to buffer all OFDM symbols of the subframe after the current subframe, which can effectively reduce the the cost of.

Optionally, the obtaining unit 31 may further receive second indication information sent by the base station, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, the subframe Other subframes are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the subframe information contained in the resource indication information according to the second indication information.

Specifically, the obtaining unit 31 may specifically receive the second indication information sent by the base station through high-layer signaling.

In this embodiment, the narrowband terminal obtains resource indication information through the obtaining unit, and the resource indication information is used to indicate the resources allocated by the base station to the narrowband terminal on the subbands that the narrowband terminal can support, and the subbands are common A part of the system broadband that the terminal can support, and the power consumption of the narrowband terminal is lower than that of the ordinary terminal, and then the determination unit determines the subband and the resources on the subband according to the resource indication information, so that The transmission unit can transmit data with the base station on the subband by using resources on the subband, so that when the narrowband terminal has multiple subbands, at least some of the subbands in which the narrowband terminal is scheduled to transmit data, It solves the problem in the prior art that the base station cannot schedule the narrowband terminal to perform data transmission in other subbands in the current subband.

FIG. 4 is a schematic structural diagram of a base station provided in another embodiment of the present application. As shown in FIG. 4 , the narrowband terminal provided in this embodiment may include an allocation unit 41 and a transmission unit 42 . Wherein, the allocating unit 41 is used for allocating resources on the subbands that the narrowband terminals can support to the narrowband terminals. the normal terminal; the transmission unit 42 is configured to send resource indication information to the narrowband terminal to indicate the subband and the resource on the subband, and use the resource on the subband on the subband , and transmit data with the narrowband terminal.

Specifically, the resource indication information may include but not limited to:

subband information and first resource allocation information, the subband information is used to indicate the subband, and the first resource allocation information is used to indicate resources on the subband; or

Second resource allocation information, where the second resource allocation information is used to indicate resources on the subband.

Optionally, in a possible implementation manner of this embodiment, the transmission unit 42 may specifically send the first resource allocation information to the narrowband terminal through a control channel, so that the narrowband terminal uses the subband information, and The first resource allocation information determines the subband and resources on the subband. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in downlink control information (Downlink Control Information, DCI), for example, a carrier indicator field (Carrier Indicator Field, CIF) field and/or RA field; or The first resource allocation information may also be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, the transmission unit 42 may specifically send the subband information to the narrowband terminal through high-level signaling, and send the second subband information to the narrowband terminal through a control channel. - resource allocation information. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the first resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the first resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

Optionally, in a possible implementation manner of this embodiment, the transmission unit 42 may specifically send the subband information and the first resource allocation information to the narrowband terminal through a control channel. Wherein, the subband information may include a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. Specifically, the subband information and the first resource allocation information may be included in an existing field in the DCI, for example, a CIF field or an RA field; or the subband information and the first resource allocation information may also be It may be included in a newly added field of the DCI, which is not limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, the transmission unit 42 may specifically send the second resource allocation information to the narrowband terminal through a control channel. Specifically, the second resource allocation information may be included in an existing field in the DCI, for example, a CIF field and/or an RA field; or the second resource allocation information may also be included in a newly added field of the DCI, This embodiment does not limit it.

Wherein, the control channel may specifically be an enhanced physical downlink control channel (EnhancedPhysical Downlink Control Channel, ePDCCH).

It can be understood that, the subband that the allocating unit 41 assigns to the narrowband terminal that can be supported by the narrowband terminal may be a subband that partially or completely overlaps with the subband mapped to the control channel; The subbands mapped to the control channel do not overlap, which is not limited in this embodiment.

Optionally, in a possible implementation of this embodiment, the transmission unit 42 may further send first indication information to the narrowband terminal, where the first indication information is used to indicate whether to perform cross-subband scheduling. In the cross-subband scheduling, subbands different from the subband are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the resource indication information according to the first indication information The subband information contained in .

Specifically, the transmission unit 42 may send the first indication information to the narrowband terminal through high-layer signaling.

Optionally, in a possible implementation of this embodiment, the resource indication information sent by the transmission unit 42 may further include subframe information; correspondingly, the transmission unit 42 may specify In the indicated subframe, on the subband, use resources on the subband to transmit data with the narrowband terminal, where the subframe includes the current subframe or a subframe after the current subframe.

Specifically, the transmission unit 42 may further receive the buffer capability or service delay requirement of the narrowband terminal sent by the narrowband terminal, and determine that the subframe is The current subframe or a subframe after the current subframe.

For example, if the buffering capability of the narrowband terminal is strong, it means that the narrowband terminal is capable of storing all Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe, and the base station may determine the The subframe indicated by the subframe information is the current subframe; if the buffer capability of the narrowband terminal is poor, it means that the narrowband terminal is unable to store all OFDM symbols of a subframe, and the base station can determine the The subframe indicated by the subframe information is a subframe after the current subframe, so that the narrowband terminal does not need to buffer all OFDM symbols of the subframe after the current subframe, which can effectively reduce the the cost of.

Optionally, the transmission unit 42 may further send second indication information to the narrowband terminal, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, the subframe Other subframes are used to transmit the resource indication information, so that the narrowband terminal can correctly identify the subframe information contained in the resource indication information according to the second indication information.

Specifically, the transmission unit 42 may send the second indication information to the narrowband terminal through high-layer signaling.

In this embodiment, the base station allocates resources on the subbands that the narrowband terminal can support to the narrowband terminal through the allocation unit, the subband is a part of the system broadband that the common terminal can support, and the power consumption of the narrowband terminal is low For the common terminal, the transmission unit sends resource indication information to the narrowband terminal to indicate the subband and the resources on the subband, so that the transmission unit can use the subband on the subband The resources on the subbands are used to transmit data with the narrowband terminal, so that when the narrowband terminal has multiple subbands, at least part of the subbands in which the narrowband terminal is scheduled to transmit data solves the problem of the current subband of the base station in the prior art. The problem that narrowband terminals cannot be scheduled for data transmission in other subbands.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) to execute the methods described in the various embodiments of the present application. partial steps. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk or optical disk, etc., which can store program codes. medium.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (28)

1. A data transmission method, characterized in that, comprising: The narrowband terminal obtains resource indication information, and the resource indication information is used to indicate resources allocated by the base station to the narrowband terminal on a subband that the narrowband terminal can support, and the subband is a part of the system broadband that can be supported by an ordinary terminal , and the power consumption of the narrowband terminal is lower than that of the normal terminal, the resource indication information includes: subband information and first resource allocation information, the subband information is used to indicate the subband, the first The resource allocation information is used to indicate resources on the subband; The narrowband terminal determines the subband and resources on the subband according to the resource indication information; The narrowband terminal uses resources on the subband to transmit data with the base station on the subband. 2. The method according to claim 1, wherein said narrowband terminal obtaining resource indication information comprises: The narrowband terminal obtains the subband information, and receives the first resource allocation information sent by the base station through a control channel; or The narrowband terminal receives the subband information sent by the base station through high-level signaling, and the first resource allocation information sent through a control channel; or The narrowband terminal receives the subband information and the first resource allocation information sent by the base station through a control channel. 3. The method of claim 2, wherein, The subband information includes a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. 4. The method according to any one of claims 1-3, characterized in that before the narrowband terminal obtains the resource indication information, it further includes: The narrowband terminal receives first indication information sent by the base station, the first indication information is used to indicate whether to perform cross-subband scheduling, and in the cross-subband scheduling, subbands other than the subband Used to transmit the resource indication information. 5. The method according to claim 4, wherein the resource indication information further includes subframe information; the narrowband terminal utilizes resources on the subband on the subband to communicate with The base station transmits data, including: In the subframe indicated by the subframe information, the narrowband terminal uses resources on the subband to transmit data with the base station on the subframe, where the subframe includes the current subframe or the current The subframe after the subframe. 6. The method according to claim 5, characterized in that before the narrowband terminal obtains the resource indication information, further comprising: The narrowband terminal sends the buffer capability or service delay requirement of the narrowband terminal to the base station, so that the base station determines that the subframe is the current A subframe or a subframe subsequent to the current subframe. 7. The method according to claim 5 or 6, wherein, before the narrowband terminal obtains the resource indication information, further comprising: The narrowband terminal receives second indication information sent by the base station, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, other subframes outside the subframe are Used to transmit the resource indication information. 8. A data transmission method, characterized in that, comprising: The base station allocates resources on a subband that the narrowband terminal can support to the narrowband terminal, the subband is a part of the system broadband that can be supported by a common terminal, and the power consumption of the narrowband terminal is lower than that of the normal terminal, the The resource indication information includes: subband information and first resource allocation information, the subband information is used to indicate the subband, and the first resource allocation information is used to indicate the subband on the subband indicated by the subband information resource; The base station sends resource indication information to the narrowband terminal to indicate the subband and resources on the subband; The base station transmits data with the narrowband terminal on the subband by using resources on the subband. 9. The method according to claim 8, wherein the base station sends resource indication information to the narrowband terminal, comprising: The base station sends the subband information to the narrowband terminal through high-layer signaling, and sends the first resource allocation information to the narrowband terminal through a control channel; or The base station sends the subband information and the first resource allocation information to the narrowband terminal through a control channel. 10. The method of claim 9, wherein, The subband information includes a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. 11. The method according to any one of claims 8-10, characterized in that before the base station sends resource indication information to the narrowband terminal, it further includes: The base station sends first indication information to the narrowband terminal, where the first indication information is used to indicate whether to perform cross-subband scheduling, and in the cross-subband scheduling, other subbands different from the subband are Used to transmit the resource indication information. 12. The method according to claim 11, wherein the resource indication information further includes subframe information; the base station utilizes resources on the subband on the subband to communicate with the The above narrowband terminal transmits data, including: In the subframe indicated by the subframe information, the base station uses resources on the subband to transmit data with the narrowband terminal on the subframe, where the subframe includes the current subframe or the current The subframe after the subframe. 13. The method according to claim 12, wherein before the base station sends resource indication information to the narrowband terminal, further comprising: The base station receives the buffer capability or service delay requirement of the narrowband terminal sent by the narrowband terminal; The base station determines that the subframe is the current subframe or a subframe subsequent to the current subframe according to the buffer capability or service delay requirement of the narrowband terminal. 14. The method according to claim 12 or 13, characterized in that before the base station sends resource indication information to the narrowband terminal, further comprising: The base station sends second indication information to the narrowband terminal, the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, other subframes outside the subframe are used for transmitting the resource indication information. 15. A narrowband terminal, characterized in that it comprises: An obtaining unit, configured to obtain resource indication information, where the resource indication information is used to indicate the resources allocated by the base station to the narrowband terminal on the subband that the narrowband terminal can support, and the subband is a system that the common terminal can support part of the broadband, and the power consumption of the narrowband terminal is lower than that of the normal terminal, the resource indication information includes: subband information and first resource allocation information, the subband information is used to indicate the subband, the The first resource allocation information is used to indicate resources on the subband; a determining unit, configured to determine the subband and resources on the subband according to the resource indication information; A transmission unit, configured to transmit data with the base station on the sub-band by using resources on the sub-band. 16. The narrowband terminal according to claim 15, wherein the obtaining unit is specifically used for Obtain the subband information, and receive the first resource allocation information sent by the base station through a control channel; or receiving the subband information sent by the base station through high layer signaling, and the first resource allocation information sent through a control channel; or receiving the subband information and the first resource allocation information sent by the base station through a control channel. 17. The narrowband terminal according to claim 16, characterized in that, The subband information includes a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. 18. The narrowband terminal according to any one of claims 15-17, wherein the obtaining unit is also used for receiving first indication information sent by the base station, where the first indication information is used to indicate whether to perform cross-subband scheduling, and in the cross-subband scheduling, subbands other than the subband are used for transmission The resource indication information. 19. The narrowband terminal according to claim 18, wherein the resource indication information further includes subframe information; the transmission unit is specifically used for In the subframe indicated by the subframe information, on the subband, use the resources on the subband to transmit data with the base station, and the subframe includes the current subframe or a period after the current subframe subframe. 20. The narrowband terminal according to claim 19, wherein the transmission unit is also used for Sending the buffer capability or service delay requirement of the narrowband terminal to the base station, so that the base station determines that the subframe is the current subframe or the current subframe according to the buffer capability or service delay requirement of the narrowband terminal Subframes after the current subframe. 21. The narrowband terminal according to claim 19 or 20, wherein the obtaining unit is also used for receiving second indication information sent by the base station, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, subframes other than the subframe are used to transmit the The above resource indication information. 22. A base station, comprising: An allocation unit, configured to allocate resources on a subband that the narrowband terminal can support to the narrowband terminal, where the subband is a part of the system broadband that can be supported by a common terminal, and the power consumption of the narrowband terminal is lower than that of the normal terminal In the terminal, the resource indication information includes: subband information and first resource allocation information, the subband information is used to indicate the subband, and the first resource allocation information is used to indicate resources on the subband; a transmission unit, configured to send resource indication information to the narrowband terminal to indicate the subband and resources on the subband, and use the resources on the subband on the subband to communicate with the Narrowband terminals transmit data. 23. The base station according to claim 22, wherein the transmission unit is specifically used for sending the subband information to the narrowband terminal through high layer signaling, and sending the first resource allocation information to the narrowband terminal through a control channel; or sending the subband information and the first resource allocation information to the narrowband terminal through a control channel. 24. The base station according to claim 23, characterized in that, The subband information includes a subband identifier or an offset identifier, and the offset identifier is used to indicate an offset of the subband relative to the subband mapped to the control channel. 25. The base station according to any one of claims 22-24, wherein the transmission unit is also used for Sending first indication information to the narrowband terminal, where the first indication information is used to indicate whether to perform cross-subband scheduling, and in the cross-subband scheduling, subbands other than the subband are used for transmission The resource indication information. 26. The base station according to claim 25, wherein the resource indication information further includes subframe information; the transmission unit is specifically used to In the subframe indicated by the subframe information, on the subband, use the resources on the subband to transmit data with the narrowband terminal, and the subframe includes the current subframe or after the current subframe of subframes. 27. The base station according to claim 26, wherein the transmission unit is further used for receiving the buffer capability or service delay requirement of the narrowband terminal sent by the narrowband terminal, and determining that the subframe is the current subframe or the current subframe according to the buffer capability or service delay requirement of the narrowband terminal The subframe after the subframe. 28. The base station according to claim 26 or 27, wherein the transmission unit is also used for sending second indication information to the narrowband terminal, where the second indication information is used to indicate whether to perform cross-subframe scheduling, and in the cross-subframe scheduling, subframes other than the subframe are used to transmit the The above resource indication information.