WO2013189201A1

WO2013189201A1 - Location processing method, base station, and terminal

Info

Publication number: WO2013189201A1
Application number: PCT/CN2013/074411
Authority: WO
Inventors: 张向东
Original assignee: 华为技术有限公司
Priority date: 2012-06-21
Filing date: 2013-04-19
Publication date: 2013-12-27
Also published as: CN103517439B; CN103517439A

Abstract

Embodiments of the present invention provide a location processing method, a base station and a terminal. The method comprises: determining the location of a control channel where control resources used for scheduling the terminal is located and the location of a sub-band supported by the terminal (101); and sending deviation information to the terminal, the deviation information being used for indicating the location of the sub-band deviated relative to the control channel, so that the terminal obtains location information of the sub-band according to location information of the control channel and the deviation information (102). In the embodiments of the present invention, the base station does not need to separately send the location information of the sub-band supported by the terminal to the terminal, thereby decreasing transmission resources.

Description

Position processing method and base station, terminal

TECHNICAL FIELD The present application relates to communication technologies, and in particular, to a location processing method, a base station, and a terminal. Background technique

Supports Machine Type Communications (MTC) applications with a large number of terminals in wireless communication systems such as Long Term Evolution (LTE) systems and advanced Long Term Evolution Advanced (LTE-A) systems In order to reduce the cost of the terminal (ie, the MTC terminal), the MTC terminal may be configured to perform signaling or data processing only within a smaller bandwidth of the system bandwidth (ie, one subband of the system bandwidth). In the prior art, the base station may send, to the MTC terminal, location information of a control channel where the control resource of the terminal is scheduled and location information of the subband supported by the MTC terminal. The location information of the control channel and the location information of the subband supported by the MTC terminal may be identified by a resource block (RB) number.

However, the location information of the control channel where the control resource of the terminal is scheduled to be transmitted to the terminal and the location information of the subband supported by the terminal are respectively transmitted to the terminal, and more transmission resources are required. SUMMARY OF THE INVENTION Aspects of the present application provide a location processing method and a base station and a terminal for reducing transmission resources. An aspect of the present application provides a location processing method, including:

Determining a location of a control channel where the control resource for scheduling the terminal is located and a location of the subband supported by the terminal;

Transmitting, to the terminal, offset information, where the offset information is used to indicate a location of the subband offset from the control channel, so that the terminal according to the location information of the control channel and the offset The information obtains location information of the sub-band.

In another aspect of the present application, a location processing method is provided, including:

And receiving, by the base station, offset information, where the offset information is used to indicate a location of a subband supported by the terminal relative to a control channel offset used by the base station to schedule a control resource of the terminal; And obtaining location information of the subband according to location information of the control channel and the offset information.

In another aspect of the present application, a base station is provided, including:

a processor, configured to determine a location of a control channel where the control resource for scheduling the terminal is located, and a location of the subband supported by the terminal;

a transmitter, configured to send, to the terminal, offset information, where the offset information is used to indicate a location of the subband offset from the control channel, so that the terminal according to the location information of the control channel And the offset information obtains location information of the subband.

In another aspect of the present application, a terminal is provided, including:

a receiver, configured to receive offset information sent by the base station, where the offset information is used to indicate a location of a subband supported by the terminal relative to a control channel offset used by the base station to schedule a control resource of the terminal ;

And a processor, configured to obtain location information of the subband according to location information of the control channel and the offset information.

On the one hand, it can be seen from the foregoing technical solution that, by determining the location of the control channel where the control resource for scheduling the terminal is located and the location of the subband supported by the terminal, the embodiment of the present application enables the offset information to be sent to the terminal. The offset information is used to indicate a location of the subband offset with respect to the control channel, so that the terminal obtains location information of the subband according to location information of the control channel and the offset information. The base station does not need to separately send the location information of the subband supported by the terminal to the terminal, thereby reducing the transmission resource.

On the other hand, it is also known by the foregoing technical solution that, by receiving the offset information sent by the base station, the offset information is used to indicate that the subband supported by the terminal is used to control the control resource of the terminal used by the base station. The location of the channel offset, so that the location information of the subband is obtained according to the location information of the control channel and the offset information, because the base station does not need to separately send the location information of the subband supported by the terminal to the terminal, Thereby reducing the transmission resources. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present application, for those of ordinary skill in the art, Other drawings may also be obtained from these drawings without the inventive labor.

FIG. 1 is a schematic flowchart diagram of a location processing method according to an embodiment of the present application;

2 is a schematic flowchart of a location processing method according to another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a base station according to another embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. The embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

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

FIG. 1 is a schematic flowchart of a location processing method according to an embodiment of the present application, as shown in FIG. 1.

101. Determine a location of a control channel where the control resource for scheduling the terminal is located and a location of the subband supported by the terminal.

102. Send, to the terminal, offset information, where the offset information is used to indicate a location of the subband offset from the control channel, so that the terminal according to the location information of the control channel and the The offset information obtains location information of the subband.

It should be noted that the execution body of 101 to 102 may be a base station.

Optionally, in an optional implementation manner of this embodiment, the base station may further send location information of the control channel to the terminal.

It should be noted that, the base station may simultaneously send the location information and the offset information of the control channel to the terminal, or the base station may not simultaneously send the location information and the offset of the control channel to the terminal. For example, the base station may first send the location information of the control channel to the terminal, and then send the offset information to the terminal, as long as the offset information can clearly indicate which subband is relative to which Control the position of the channel offset, this implementation This example does not limit this.

Optionally, in an optional implementation manner of this embodiment, the base station does not need to send the location information of the control channel to the terminal, and the terminal can obtain the control according to a pre-configuration, for example, a protocol agreement. Location information of the channel.

Optionally, in an optional implementation manner of this embodiment, the control channel may include, but is not limited to, an enhanced physical downlink control channel (Enhanced Physical Downlink).

Control Channel, ePDCCH).

Optionally, in an optional implementation manner of this embodiment, the offset information may include: an offset; or

The offset and the identity of the subband, for example, the number of the subband.

Specifically, if the offset information is an offset, the terminal may determine, according to a predefined association policy, that the offset sent by the base station to the terminal is the location of which subband supported by the terminal. . For example, the number of the sub-bands supported by the terminal may be agreed, and the sequence is associated with the offset, so that the base station subsequently uses the terminal to support the terminal when the terminal is supported on the sub-band supported by the terminal. The number of subbands does not require location information. In this way, the purpose of reducing transmission overhead can be achieved.

Specifically, if the offset information is an offset and a number of a subband supported by the terminal, the terminal may directly perform the number of the subband supported by the terminal and the offset. The number of subbands supported by the terminal does not require location information. In this way, the purpose of reducing transmission overhead can be achieved.

It can be understood that the terminal involved in the technical solution provided by this embodiment may be an MTC terminal, where the MTC terminal can only perform signaling or data processing in a small bandwidth (ie, one subband in the system broadband), or It can also be a common terminal, and the normal terminal can perform signaling or data processing in the system bandwidth (that is, all sub-bands), which is not limited in this embodiment.

Optionally, in an optional implementation manner of this embodiment, the location of the control channel and the location of the subband may be referenced by respective center frequencies; then, the base station sends the location to the terminal. When the location information range indicated by the offset information is -1/2 (B control channel + B terminal) to 1/2 (B control terminal), the transmission resource reduction is relatively obvious, wherein the Β control channel is the The bandwidth of the control channel is the bandwidth of the subband. To make the method provided by the embodiment of the present application clearer, the MTC terminal in the LTE system will be taken as an example. Assuming that the bandwidth of the ePDCCH is Bepdcch and the width of the sub-band supported by the MTC terminal is Bmtc, the eNB only needs to deliver the information to the MTC terminal if the eNB has already delivered the eNB or the eNB and the UE have obtained the ePDCCH. And indicating an offset Boffset of the subband with respect to the ePDCCH position, where Boffet satisfies 3⁄4 port: -1/2 (Bepdcch+Bmtc)<=Boffet<=1/2 (Bepdcch+Bmtc Taking the system bandwidth of 1 10 RBs as an example, the location information of the ePDCCH sent by the eNB still needs 7 bits. Then, if Bepdcch=6 RBs, Bmtc=6 RBs, B'J -6RB<= Boffet<=6RB, that is, 3 bits of information bits and 1 bit of sign bits are required, for a total of 4 bits. If it is specified, the position of the subband supported by the MTC terminal is shifted in one direction with respect to the position of the ePDCCH. No need for a sign bit, only 3 bits of information bits are needed. Therefore, the eNB indicates to the MTC terminal the location of the ePDCCH and the location of one subband supported by the MTC terminal, which requires a total of 10 bits to 1 1 bits. The eNB separately goes to the MTC. The terminal indicates that one ePDCCH location needs 7 bits, and indicates one separately. The sub-band positions supported by the MTC terminals also require 7 bits, and a total of 14 bits are required.

In this embodiment, the base station determines the location of the control channel where the control resource of the terminal is located and the location of the subband supported by the terminal, so that the base station can send the offset information to the terminal, where the offset The information is used to indicate a location of the subband offset relative to the control channel, so that the terminal obtains location information of the subband according to location information of the control channel and the offset information, because the base station does not need The location information of the subband supported by the terminal is separately transmitted to the terminal, thereby reducing transmission resources.

FIG. 2 is a schematic flowchart of a location processing method according to another embodiment of the present application, as shown in FIG. 2 .

201. Receive offset information sent by a base station, where the offset information is used to indicate a location of a subband supported by the terminal relative to a control channel offset used by the base station to schedule a control resource of the terminal.

202. Obtain location information of the subband according to location information of the control channel and the offset information.

It should be noted that the execution body of 201 ~ 202 can be a terminal.

Optionally, in an optional implementation manner of this embodiment, the terminal may further Receiving location information of the control channel sent by the base station.

It should be noted that, the terminal may receive location information and offset information of the control channel that are sent by the base station at the same time, or the terminal may also receive location information of the control channel that is not sent by the base station at the same time. Offset information, for example, the terminal may first receive the location information of the control channel that is sent by the base station first, and then receive the offset information that is sent by the base station, as long as the offset information can clearly indicate The position of the sub-band with respect to which control channel is offset may be used, which is not limited in this embodiment.

Control Channel, ePDCCH).

It can be understood that the terminal involved in the technical solution provided by this embodiment may be an MTC terminal, where the MTC terminal can only perform signaling or data processing in a small bandwidth (ie, one subband in the system broadband), or It can also be a general terminal, and the ordinary terminal can be in the system Signaling or data processing is performed in the wide (that is, all sub-bands), which is not limited in this embodiment. Optionally, in an optional implementation manner of this embodiment, the location of the control channel and the location of the subband may be referenced by respective center frequencies; then, the base station sends the location to the terminal. When the location information range indicated by the offset information is -1/2 (B control channel + B terminal) to 1/2 (B control channel + B terminal), the transmission resource reduction is obvious, wherein the B control channel The bandwidth of the control channel is the bandwidth of the subband.

To make the method provided by the embodiment of the present application clearer, the MTC terminal in the LTE system will be taken as an example. Assuming that the bandwidth of the ePDCCH is Bepdcch and the width of the sub-band supported by the MTC terminal is Bmtc, the eNB only needs to deliver the information to the MTC terminal if the eNB has already delivered the eNB or the eNB and the UE have obtained the ePDCCH. The offset Boffset for indicating the position of the subband with respect to the ePDCCH offset may be, wherein Boffet satisfies the following:

-1/2(Bepdcch+Bmtc)<=Boffet<=1/2(Bepdcch+Bmtc) „ Taking the system bandwidth of 1 10 RBs as an example, the location information of the ePDCCH sent by the eNB still needs 7 bits (bits), ^ ^^, ^口果Bepdcch=6 RB, Bmtc=6 RB, Bei'b 6RB<=Boffet<=6RB, that is, 3 bits of information bits and 1 bit of sign bits are required, for a total of 4 bits. If it is specified that the position of the sub-band supported by the MTC terminal is offset in one direction only with respect to the position of the ePDCCH, no sign bit is needed, and only information bits of 3 bits are needed. Therefore, the eNB indicates the location of the ePDCCH to the MTC terminal. The location of one sub-band supported by the MTC terminal requires a total of 10 bits to 11 bits. The eNB separately indicates that an ePDCCH position needs to be 7 bits (bits) to the MTC terminal, and the sub-band position supported by an MTC terminal separately needs to be 7 Bits (bits) require a total of 14 bits (bits).

In this embodiment, the terminal receives the offset information sent by the base station, where the offset information is used to indicate that the subband supported by the terminal is different from the control channel used by the base station to schedule the control resource of the terminal. a location, the terminal is configured to obtain the location information of the subband according to the location information of the control channel and the offset information, because the base station does not need to separately send the location information of the subband supported by the terminal to the terminal, Thereby reducing the transmission resources.

It should be noted that, for the foregoing method embodiments, for the sake of brevity, they are all described as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence. Because in accordance with this application, some steps can be used in other orders. Or at the same time. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in detail in an embodiment, and the related descriptions of other embodiments can be referred to.

FIG. 3 is a schematic structural diagram of a base station according to another embodiment of the present disclosure. As shown in FIG. 3, the base station in this embodiment may include a processor 31 and a transmitter 32. The processor 31 is configured to determine a location of a control channel where the control resource for scheduling the terminal is located, and a location of the subband supported by the terminal. The transmitter 32 is configured to send the offset information to the terminal, where the offset The information is used to indicate a location of the subband offset relative to the control channel, so that the terminal obtains location information of the subband according to location information of the control channel and the offset information.

Optionally, in an optional implementation manner of this embodiment, the transmitter 32 may further send the location information of the control channel to the terminal.

It should be noted that the transmitter 32 may simultaneously send the location information and the offset information of the control channel to the terminal, or the transmitter 32 may not simultaneously send the location information and the offset of the control channel to the terminal. For example, the transmitter 32 may first send the location information of the control channel to the terminal, and then send the offset information to the terminal, as long as the offset information can clearly indicate which subband is relative to which The position of the control channel offset is sufficient, which is not limited in this embodiment.

Control Channel, ePDCCH).

Specifically, if the offset information is an offset, the terminal may determine, according to a predefined association policy, that the offset sent by the base station to the terminal is the location of which subband supported by the terminal. . For example, the number of the sub-bands supported by the terminal may be agreed, and the sequence is associated with the offset, so that the base station subsequently uses the terminal to support the terminal when the terminal is supported on the sub-band supported by the terminal. The number of subbands does not require location information. such, The purpose of reducing transmission overhead can be achieved.

Optionally, in an optional implementation manner of this embodiment, the location of the control channel and the location of the subband may be referenced by respective center frequencies; then, the base station sends the location to the terminal. When the location information range indicated by the offset information is -1/2 (B control channel + B terminal) to 1/2 (B control channel + B terminal), the transmission resource reduction is obvious, wherein the B control channel The bandwidth of the control channel is the bandwidth of the subband.

-1/2(Bepdcch+Bmtc)<=Boffet<=1/2(Bepdcch+Bmtc) „ Taking the system bandwidth of 1 10 RBs as an example, the location information of the ePDCCH sent by the eNB still needs 7 bits (bits), ^ A, ^Bepdcch=6 RBs, Bmtc=6 RBs, B'J -6RB<=Boffet<=6RB, that is, 3 bits of information bits and 1 bit of sign bits are required, for a total of 4 bits. If it is specified that the position of the sub-band supported by the MTC terminal is shifted in one direction only with respect to the position of the ePDCCH, no sign bit is needed, and only information bits of 3 bits are needed. Therefore, the eNB indicates the location and location of the ePDCCH to the MTC terminal. The location of one sub-band supported by the MTC terminal requires a total of 10 bits to 11 bits. The eNB separately indicates that an ePDCCH position needs to be 7 bits (bits) to the MTC terminal, and the sub-band position supported by an MTC terminal separately needs to be 7 Bits (bits) require a total of 14 bits (bits).

In this embodiment, the base station determines, by the processor, a location of a control channel where the control resource of the terminal is scheduled and a location of the subband supported by the terminal, so that the transmitter can send the offset information to the terminal, where the offset The shift information is used to indicate a position of the subband offset relative to the control channel, so that the terminal obtains location information of the subband according to location information of the control channel and the offset information, because the base station It is not necessary to separately send the location information of the subband supported by the terminal to the terminal, thereby reducing the transmission resource.

FIG. 4 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. As shown in FIG. 4, the terminal in this embodiment may include a receiver 41 and a processor 42. The receiver 41 is configured to receive the offset information sent by the base station, where the offset information is used to indicate that the subband supported by the terminal is used to schedule a control channel offset of the control resource used by the base station to schedule the terminal. The processor 42 is configured to obtain location information of the subband according to the location information of the control channel and the offset information.

Optionally, in an optional implementation manner of the embodiment, the receiver 41 may further receive location information of the control channel sent by the base station.

It should be noted that the receiver 41 may receive the location information and the offset information of the control channel that are sent by the base station at the same time, or the receiver 41 may also receive the location information of the control channel that is not sent by the base station at the same time. Offset information, for example, the receiver 41 may first receive the location information of the control channel that is sent by the base station first, and then receive the offset information that is sent by the base station, as long as the offset information can clearly indicate The position of the sub-band with respect to which control channel is offset may be used, which is not limited in this embodiment.

Control Channel, ePDCCH).

Specifically, if the offset information is an offset, the terminal may determine, according to a predefined association policy, that the offset sent by the base station to the terminal is the location of which subband supported by the terminal. . For example, the number of subbands supported by the terminal may be agreed, in order The offsets are associated, so that the base station directly uses the number of the sub-bands supported by the terminal when scheduling the terminal on the sub-band supported by the terminal, without using location information. In this way, the purpose of reducing transmission overhead can be achieved.

Optionally, in an optional implementation manner of this embodiment, the location of the control channel and the location of the subband may be referenced by respective center frequencies; then, the base station sends the location to the terminal. The location information indicated by the offset information is -1/2 (B control channel + B terminal) to

1/2 (B control channel + B terminal), the transmission resource reduction is relatively obvious, wherein the B control channel is the bandwidth of the control channel, which is the bandwidth of the subband.

In order to make the method provided by the embodiment of the present application more clear, the following will be in the LTE system.

The MTC terminal is taken as an example. Assuming that the bandwidth of the ePDCCH is Bepdcch and the width of the sub-band supported by the MTC terminal is Bmtc, the eNB only needs to deliver the information to the MTC terminal if the eNB has already delivered the eNB or the eNB and the UE have obtained the ePDCCH. The offset Boffset for indicating the position of the subband with respect to the ePDCCH offset may be, wherein Boffet satisfies the following:

-1/2(Bepdcch+Bmtc)<=Boffet<=1/2(Bepdcch+Bmtc) „ Taking the system bandwidth of 1 10 RBs as an example, the location information of the ePDCCH sent by the eNB still needs 7 bits (bits), ^ A, ^Bepdcch=6 RBs, Bmtc=6 RBs, B'J -6RB<=Boffet<=6RB, that is, 3 bits of information bits and 1 bit of sign bits are required, for a total of 4 bits. If it is specified that the position of the sub-band supported by the MTC terminal is shifted in one direction only with respect to the position of the ePDCCH, no sign bit is needed, and only information bits of 3 bits are needed. Therefore, the eNB indicates the location and location of the ePDCCH to the MTC terminal. The location of a subband supported by the UE, a total of 10bits to 1 1 bits. The eNB separately requires 7 bits (bits) to indicate an ePDCCH location to the MTC terminal. The sub-band position supported by an MTC terminal separately requires 7 bits (bits), and a total of 14 bits are required.

In this embodiment, the terminal receives the offset information sent by the base station by using the receiver, where the offset information is used to indicate that the subband supported by the terminal is used to control the control channel where the control resource of the terminal is located. The location of the offset, so that the processor can obtain the location information of the subband according to the location information of the control channel and the offset information, because the base station does not need to separately send the location information of the subband supported by the terminal to the terminal. , thereby reducing transmission resources.

A person skilled in the art can clearly understand that the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiments for the convenience and brevity of the description, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. section Steps. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and the like can store program codes. Medium.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application is described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently substituted; and the modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

claims

1. A location processing method, characterized by including:

Determine the location of the control channel where the control resources for scheduling the terminal are located and the location of the subbands supported by the terminal;

Send offset information to the terminal, where the offset information is used to indicate the offset position of the subband relative to the control channel, so that the terminal can adjust the offset according to the location information of the control channel and the offset. Information obtains the location information of the subband.

2. The method according to claim 1, wherein the method further includes: sending the location information of the control channel to the terminal.

3. The method according to claim 1 or 2, characterized in that the control channel includes an enhanced physical downlink control channel.

4. The method according to any one of claims 1 to 3, characterized in that the offset information includes:

offset; or

The offset and identification of the subband.

5. The method according to any one of claims 1 to 4, characterized in that the terminal includes an MTC terminal.

6. The method according to any one of claims 1 to 5, characterized in that: the position of the control channel and the position of the subband are based on their respective center frequencies; the offset information is The indicated location information range is -1 /2 (B control channel + B terminal) to 1 /2 (B control channel + B terminal), where B ^H« is the bandwidth of the control channel, and is the subband bandwidth.

7. A location processing method, characterized by including:

Receive offset information sent by the base station, the offset information is used to indicate the offset position of the subband supported by the terminal relative to the control channel where the base station uses to schedule the control resources of the terminal; according to the control channel The position information and the offset information are used to obtain the position information of the subband.

8. The method according to claim 7, wherein the method further includes: receiving the location information of the control channel sent by the base station.

9. The method according to claim 7 or 8, characterized in that the control channel includes an enhanced physical downlink control channel.

10. The method according to any one of claims 7 to 9, characterized in that the offset information includes:

offset; or

The offset and identification of the subband.

1 1. The method according to any one of claims 7 to 10, characterized in that, the position of the control channel and the position of the subband are based on their respective center frequencies; the offset information The indicated location information range is - 1 / 2 (B control channel + B terminal) 1/2 (B control channel + B terminal), where _Β¾ΦΗ « is the bandwidth of the control channel, and is the subband bandwidth.

12. A base station, characterized by including:

A processor, configured to determine the location of the control channel where the control resources for scheduling the terminal are located and the location of the subbands supported by the terminal;

A transmitter configured to send offset information to the terminal, where the offset information is used to indicate the offset position of the subband relative to the control channel, so that the terminal can adjust the position of the subband according to the position information of the control channel. and the offset information to obtain the position information of the subband.

13. The base station according to claim 12, wherein the transmitter is further configured to send the location information of the control channel to the terminal.

14. The base station according to claim 12 or 13, characterized in that the control channel includes an enhanced physical downlink control channel.

15. The base station according to any one of claims 12 to 14, wherein the offset information sent by the transmitter to the terminal includes:

offset; or

The offset and identification of the subband.

16. The base station according to any one of claims 12 to 15, wherein the terminal includes an MTC terminal.

17. The base station according to any one of claims 12 to 16, characterized in that, the position of the control channel and the position of the subband are based on their respective center frequencies; the transmitter transmits The location information range indicated by the offset information sent by the terminal is -1/2(B control channel + B terminal) 1/2(B control channel + B terminal), where B control channel is the control channel The bandwidth of is the bandwidth of the sub-band.

18. A terminal, characterized in that it includes: A receiver configured to receive offset information sent by the base station, where the offset information is used to indicate the offset position of the subband supported by the terminal relative to the control channel offset where the base station uses to schedule the control resources of the terminal. ;

A processor, configured to obtain the location information of the subband according to the location information of the control channel and the offset information.

19. The terminal according to claim 18, wherein the receiver is further configured to receive the location information of the control channel sent by the base station.

20. The terminal according to claim 18 or 19, characterized in that the control channel includes an enhanced physical downlink control channel.

21. The terminal according to any one of claims 18 to 20, characterized in that the offset information includes:

offset; or

The offset and identification of the subband.

22. The terminal according to any one of claims 18 to 21, characterized in that the terminal includes an MTC terminal.

23. The terminal according to any one of claims 18 to 22, characterized in that, the position of the control channel and the position of the subband are based on their respective center frequencies; the offset information is The indicated location information ranges from -1/2 (B control channel + B terminal) to 1/2 (B control channel + B terminal), where the B control channel is the bandwidth of the control channel, and the B terminal is the sub band bandwidth.