CN103379552B - A kind of method and device supporting narrow band communication in broadband system - Google Patents

Abstract

The embodiment of the present invention discloses a method and device for supporting narrowband communication in a broadband system, wherein, the method for supporting narrowband communication in a broadband system includes determining a device for supporting The number N of narrowbands communicated by the at least one MTC UE; according to the channel quality of the at least one MTC UE on the M initial narrowbands, determine the N narrowbands from the M initial narrowbands, where M≥1≥N≥ 1. The method and device for supporting narrowband communication in the broadband system in the embodiments of the present invention limit the number and location of narrowbands according to service requirements, minimize the splitting of broadband, and also make the scheduling of MTC UEs more targeted, and facilitate the adjustment of MTC UEs band to receive information.

Description

A method and device for supporting narrowband communication in a broadband system

technical field

The embodiments of the present invention relate to the field of communication technologies, and in particular to a method and device for supporting narrowband communication in a broadband system.

Background technique

"Provision of low-cost MTC UEs based on LTE" refers to providing low-cost MTC (machine type communication, machine type communication) UE (User Equipment, user equipment) based on LTE (Long Term Evolution, long-term evolution) system, and its purpose is to Provide LTE user equipment whose cost can be compared with the cost of GSM (GlobalSystem for Mobile communications, Global System for Mobile Communications)/GPRS (General Packet Radio Service, general packet radio service) user equipment, and even lower than the cost of GSM/GPRS user equipment, To replace the GSM/GPRS user equipment used in the M2M (machine type communication, machine-to-machine communication) application, so that the service provider of the M2M application can choose the LTE network to provide the M2M application, so as to realize the transfer of the M2M application from the GSM/GRPS network to the LTE network network migration.

At present, one of the ways to realize low-cost MTC UE is to reduce the transmission/reception bandwidth supported by the user equipment, such as dividing multiple narrowbands in the broadband, and selecting the narrowband with better service quality from the multiple narrowbands for the UE to communicate with Data transmission between eNodeBs (Evolved NodeB, evolved base station, eNB for short). However, if multiple narrowbands are arbitrarily divided from the broadband, it will affect the support for UEs with large bandwidth requirements; at the same time, the scheduling of MTC UEs is too random, which is not conducive to the MTC UEs to adjust the working frequency band and receive information.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and device for supporting narrowband communication in a broadband system, so as to limit the number and location of narrowbands.

The purpose of the embodiments of the present invention is achieved through the following technical solutions:

On the one hand, an embodiment of the present invention provides a method for supporting narrowband communication in a broadband system, including:

determining the number N of narrowbands used to support communication of the at least one MTC UE according to the service requirements of the at least one machine type communication user equipment MTC UE;

The N narrowbands are determined from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands, where M≥1≥N≥1.

Correspondingly, an embodiment of the present invention provides an apparatus for supporting narrowband communication in a broadband system, including:

The first determining unit is configured to determine the number N of narrowbands used to support the communication of the at least one MTC UE according to the service requirements of the at least one machine type communication user equipment MTC UE;

The second determining unit is configured to determine the N narrowbands from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands, where M≥1≥N≥1.

On the other hand, an embodiment of the present invention provides a method for supporting narrowband communication in a broadband system, including:

Receiving a broadcast message sent by the base station, the broadcast message carrying N narrowband information, the N narrowband information is obtained in the following manner: the base station determines the The number N of narrowbands supporting the communication of the at least one MTC UE, and determining the N narrowbands from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands;

The N narrowbands are determined from the M initial narrowbands according to the broadcast message, where M≥1≥N≥1.

Correspondingly, an embodiment of the present invention provides an apparatus for supporting narrowband communication in a broadband system, including:

The first receiving unit is configured to receive a broadcast message sent by the base station, the broadcast message carries N narrowband information, and the N narrowband information is obtained by the following method: at least one machine type communication user equipment MTC UE of the base station Service requirements, determining the number N of narrowbands used to support the communication of the at least one MTC UE, and determining the N narrowbands from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands;

A determining unit, configured to determine the N narrowbands from the M initial narrowbands according to the broadcast message, where M≥1≥N≥1.

It can be seen from the above-mentioned technical solution provided by the present invention that the number of divided narrowbands is limited according to service requirements, and the position of divided narrowbands is limited according to channel quality, so as to avoid arbitrarily dividing multiple narrowbands from broadband and minimize the need for broadband. Segmentation; at the same time, it also makes the scheduling of the MTC UE more targeted, and facilitates the MTC UE to adjust the working frequency band to receive information.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic flowchart of a method for supporting narrowband communication in a broadband system according to an embodiment of the present invention.

FIG. 2 is a first structural diagram of a device supporting narrowband communication in a broadband system according to an embodiment of the present invention.

FIG. 3 is a second schematic diagram of the structure of a device supporting narrowband communication in a broadband system according to an embodiment of the present invention.

Fig. 4 is a schematic flowchart of a method for supporting narrowband communication in a broadband system according to another embodiment of the present invention.

FIG. 5 is a first structural diagram of an apparatus supporting narrowband communication in a broadband system according to another embodiment of the present invention.

FIG. 6 is a second schematic structural diagram of an apparatus supporting narrowband communication in a broadband system according to another embodiment of the present invention.

FIG. 7 is a schematic diagram of an application scenario of a method for supporting narrowband communication in a broadband system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, an embodiment of the present invention provides a method for supporting narrowband communication in a broadband system, including:

11. According to the service requirement of at least one MTC UE, determine the number N of narrowbands used to support communication of the at least one MTC UE.

12. Determine the N narrowbands from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands, where M≥1≥N≥1.

The execution subject of the method for supporting narrowband communication in a broadband system in the embodiment of the present invention is a base station. Exemplarily, the base station is eNodeB (eNB for short) of the LTE system.

In the method for supporting narrowband communication in the broadband system in the embodiment of the present invention, take the maximum working bandwidth of the LTE system as 20M as an example, and 20M is the maximum working bandwidth of the LTE system. In order to reduce costs, the working bandwidth of the MTC UE can be reduced, for example, to 1.4M, 3M or 5M, etc. 1.4M, 3M or 5M refers to the maximum working bandwidth of the narrowband MTC UE.

In the embodiment of the present invention, in the method for supporting narrowband communication in a broadband system, the corresponding narrowband numbers can be assigned to the M initial narrowbands, such as the narrowband numbers range from 0 to M-1, thereby determining N narrowbands from the M initial narrowbands , the positions of the N narrowbands can be determined by determining the narrowband numbers corresponding to the N narrowbands.

In the method for supporting narrowband communication in the broadband system in the embodiment of the present invention, the number N of narrowbands used to support MTC UE communication can be determined according to the service requirements of the MTC UE within the control range (cell) of the base station. Service requirements such as how many UEs need to be served, or how many data rates need to be provided, and so on. Exemplarily, if the capacity of a narrowband control channel can only schedule 100 UEs at the same time, if there are 230 UEs within the control range (cell) of the base station, then at least 3 narrowbands must be allocated. For details, please refer to the prior art It can be understood and will not be repeated here.

In the method for supporting narrowband communication in a broadband system in an embodiment of the present invention, the M initial narrowbands may be determined in the following manner:

The eNB divides the broadband used for communication into M initial narrowbands according to the bandwidth of the narrowbands.

Optionally, the eNB can agree with the MTC UE on the initial narrowband division standard, specifically, the eNB and the MTC UE divide according to the same division standard, for example, the bandwidth is 110 RB (Radio Bearer, radio bearer), and the narrowband granularity is 6 RB. For example, then, it can be divided into 18 initial narrowbands, that is, M=18. Or, the eNB determines and divides the initial narrowband division standard, and then broadcasts the initial narrowband division situation to the MTC UE.

It can be seen from the above-mentioned technical solution provided by the present invention that the number of narrowbands is limited according to service requirements, and the position of narrowbands is limited according to channel quality, so as to avoid arbitrarily dividing multiple narrowbands from broadband and minimize the splitting of broadband; at the same time, It also makes the scheduling for the MTC UE more targeted, and facilitates the MTC UE to adjust the working frequency band to receive information.

Further, the method for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

When at least one MTC UE is one, acquire the channel quality of the MTC UE on each of the M initial narrowbands.

When at least one MTC UE is multiple, obtain the channel quality of each MTC UE on each of the M initial narrowbands among the multiple MTC UEs, and obtain the channel quality of the multiple MTC UEs on each initial narrowband The weighted average of is used as the channel quality of multiple MTC UEs on M initial narrowbands.

Optionally, the eNB may maintain a table, which stores the channel quality of each MTC UE on each initial narrowband (the initial narrowband corresponds to a narrowband number). The eNB can also obtain the weighted average of the channel quality of all MTC UEs on each initial narrowband through this table. For example, for the narrowband numbered 0, according to the channel quality of each MTC UE on the narrowband numbered 0, channel Quality weighted average.

Optionally, the manner of obtaining the channel quality of each MTC UE on each initial narrowband specifically includes but is not limited to:

For each initial narrowband, the eNB receives an SRS (Sounding Reference Signal, Sounding Reference Signal) sent by each MTC UE on the initial narrowband, and acquires the signal quality of the SRS.

Or, for each initial narrowband, the eNB receives a DMRS (Demodulation Reference Signal, demodulation reference signal) sent with data by each MTC UE on the initial narrowband, and acquires the signal quality of the DMRS.

Those skilled in the art can understand that related technologies such as the MTC UE sending the SRS or DMRS, and the eNB receiving the SRS or DMRS can be understood by referring to the prior art, and details are not repeated here. Moreover, the transmission bandwidth of the DMRS is the narrowband data transmission bandwidth, that is, the transmission bandwidth of the DMRS is the same as the narrowband data transmission bandwidth.

It is worth noting that, from the perspective of MTC UE, the way to determine the transmission bandwidth of SRS is as follows:

Among them, B _srs is the transmission bandwidth; B _narrow is the narrowband bandwidth; is rounded down.

That is, the transmission bandwidth of the SRS should be smaller than or equal to the bandwidth of the narrowband.

It can be seen that the method for supporting narrowband communication in the broadband system in the embodiment of the present invention limits the number and location of narrowbands, reduces the transmission bandwidth supported by MTC UEs, and minimizes the fragmentation of uplink broadband. Wherein, the uplink refers to the communication from the MTC UE to the eNB.

Alternatively, the manner of obtaining the channel quality of each MTC UE on each initial narrowband specifically includes but is not limited to:

For each initial narrowband, the eNB receives a CQI (Channel Quality Indicator, Channel Quality Indicator) fed back by each MTC UE on each initial narrowband, and acquires the signal quality of the downlink reference signal indicated by the CQI.

That is, the UE obtains the quality of the downlink channel by measuring the downlink reference signal, and feeds it back to the base station in the form of CQI. The base station obtains the quality of the downlink reference signal through the CQI, that is, obtains the quality of the downlink channel.

Or, for each initial narrowband, the eNB receives the measurement result on each initial narrowband fed back by each MTC UE, and acquires the signal quality of the downlink reference signal indicated by the measurement result.

Those skilled in the art can understand that the eNB sends a downlink reference signal to the MTC UE on each initial narrowband, and the MTC UE feeds back the CQI or measurement result on each initial narrowband. Related technologies such as the MTC UE feeding back the CQI or measurement results, and the eNB receiving the CQI or measurement can be understood by referring to the prior art, and details are not described here.

It can be seen that the method for supporting narrowband communication in the broadband system in the embodiment of the present invention reduces the receiving (downlink) bandwidth supported by the MTC UE, and also makes the scheduling of the MTC UE by the eNB more targeted, and facilitates the MTC UE to adjust the working frequency band to receive information. Wherein, the downlink refers to the communication from the eNB to the MTC UE direction.

Specifically, the above step 12, according to the channel quality of the MTC UE on the M initial narrowbands, determines N narrowbands from the M initial narrowbands, which may include:

According to the channel quality of at least one MTC UE on the M initial narrowbands, the N narrowbands with the highest channel quality are determined from the M initial narrowbands.

For example, the M initial narrowbands are arranged in descending order according to the channel quality or the weighted average value of the channel quality, and N are determined from high to low as the N narrowbands.

Wherein, when there are multiple MTC UEs, the channel quality is a weighted average of the channel qualities of the multiple MTC UEs on the initial narrowband.

Further, in step 12 above, after determining the N narrowbands from the M initial narrowbands, the method for supporting narrowband communication in the broadband system in the embodiment of the present invention may further include:

According to the channel quality of at least one MTC UE in the N narrowbands, determine a narrowband with the highest channel quality to support the communication of the at least one MTC UE, and instruct the at least one MTC UE to be on the narrowband with the highest channel quality communication.

That is, for any MTC UE, the eNB can determine the channel quality of the MTC UE in N narrowbands, and the eNB selects one of the narrowbands as the narrowband supporting the communication of the MTC UE.

Of course, the eNB may also have other strategies to determine the narrowband that supports the communication of the MTC UE, which is not limited.

It can be seen that after the eNB determines the N narrowbands, the eNB may also instruct the MTC UE to communicate with the narrowbands according to the channel quality of the N narrowbands. Communication means that the MTC UE monitors paging, schedules, or performs data transmission on a corresponding narrowband, and so on. The eNB only performs paging, scheduling or data transmission on the corresponding narrowband for the MTC UE, and so on.

Alternatively, in step 12 above, after determining the N narrowbands from the M initial narrowbands, the method for supporting narrowband communication in the broadband system in the embodiment of the present invention may further include:

broadcasting the information of the N narrowbands to the at least one MTC UE, so that the at least one MTC UE is used to select a narrowband for communication.

Wherein, the eNB broadcasts N narrowbands in a manner of broadcasting, which may use an IE (Information Element, information element) added in a traditional system message, or add a dedicated system message.

It can be seen that after the eNB determines the N narrowbands, the eNB does not schedule the narrowbands for the MTC UE to communicate, but the MTC UE selects the narrowbands for its communication. For example, the MTC UE selects a better signal quality according to its channel quality on the N narrowbands. Narrowband communication means that the MTC UE monitors paging, scheduling or data transmission in the corresponding narrowband, and the eNB only performs paging, scheduling or data transmission for the MTC UE in the corresponding narrowband.

Specifically, the manner of broadcasting the N narrowband information to the MTC UE may include:

The eNB broadcasts M flag bit information to the MTC UE, wherein the M flag bits correspond to M initial narrowbands, and it is agreed that when the flag bit is 1, it means that the initial narrowband corresponding to the flag bit is one of the N narrowbands, Or it is agreed that when the flag bit is 0, it means that the initial narrowband corresponding to the flag bit is one of the N narrowbands.

For example, if the uplink bandwidth is 110RB and the narrowband granularity is 6RB, then it can be divided into 18 initial narrowbands. Then, the 18 initial narrowbands can be numbered from high frequency to low frequency, or from low frequency to high frequency, such as 0- 17. An 18-bit bitmap can be used to correspond to the initial narrowbands of 0-17 one by one. For example, the 0 flag of the bitmap indicates the initial narrowband numbered 0, and so on. Then, if the 0 flag of the bitmap is 1/0, it means that the 0th initial narrowband can be used for MTC UE communication, which is one of the selected N narrowbands; otherwise, the corresponding initial narrowband is not used for MTC UE communication.

Further, the method for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

The number N of narrowbands used to support communication of the at least one MTC UE is determined periodically according to the service requirement of the at least one MTC UE.

And, periodically determine N narrowbands from the M initial narrowbands according to the channel quality of at least one MTC UE on the M initial narrowbands.

The above period can be determined according to specific scenarios and specific needs, and can be adjusted, so details will not be described here. It can be seen that the eNB tries to determine N narrowbands with better channel quality from the M initial narrowbands for MTC UE communication.

Further, the method for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

The eNB adjusts the number of at least one MTC UE on the N narrowbands according to the communication situation of the at least one MTC UE on the N narrowbands.

It can be seen that the eNB can also schedule the MTC UEs to perform communication narrowband conversion in the selected narrowbands, and try to distribute the MTC UEs evenly on each narrowband as long as the service requirements of the MTC UEs are met.

Those skilled in the art can know that resources on a narrowband are limited. If there are too many MTC UEs communicating on a certain narrowband, then when too many MTC UEs need resources, there will be insufficient resources. Then The resource requirements of the MTC UE cannot be met in time, and user experience will be degraded. Therefore, the eNB provides a load adjustment method according to the communication conditions of the MTC UEs on the N narrowbands, so that the number of MTC UEs communicating on the multiple narrowbands is relatively average, so as to avoid the above-mentioned defects.

As shown in FIG. 2, corresponding to the method for supporting narrowband communication in a broadband system in the foregoing embodiments, an embodiment of the present invention provides an apparatus for supporting narrowband communication in a broadband system, including:

The first determining unit 21 is configured to determine the number N of narrowbands used to support communication of the at least one MTC UE according to the service requirement of the at least one MTC UE.

The second determining unit 22 is configured to determine the N narrowbands from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands, where M≥1≥N≥1.

The device for supporting narrowband communication in the broadband system in the embodiment of the present invention may be set independently or integrated with a base station. Exemplarily, the base station is an eNB of an LTE system.

In the device supporting narrowband communication in the broadband system in the embodiment of the present invention, taking the maximum working bandwidth of the LTE system as 20M as an example, 20M is the maximum working bandwidth of the LTE system. In order to reduce costs, the working bandwidth of the MTC UE can be reduced, for example, to 1.4M, 3M or 5M, etc. 1.4M, 3M or 5M refers to the maximum working bandwidth of the narrowband MTC UE.

In the embodiment of the present invention, in a device supporting narrowband communication in a broadband system, corresponding narrowband numbers can be assigned to the M initial narrowbands, such as the narrowband numbers range from 0 to M-1, thereby determining N narrowbands from the M initial narrowbands , the positions of the N narrowbands can be determined by determining the narrowband numbers corresponding to the N narrowbands.

It can be seen from the above-mentioned technical solution provided by the present invention that the number of narrowbands is limited according to service requirements, and the position of narrowbands is limited according to channel quality, so as to avoid arbitrarily dividing multiple narrowbands from broadband and minimize the splitting of broadband; at the same time, It also makes the scheduling of the MTC UE more targeted, and facilitates the MTC UE to adjust the working frequency band to receive information.

As shown in Figure 3, the device for supporting narrowband communication in a broadband system in an embodiment of the present invention may also include:

The division unit 31 is configured to divide the broadband used for communication into M initial narrowbands according to the bandwidth of the narrowbands.

The device for supporting narrowband communication in the broadband system in the embodiment of the present invention may also include:

The obtaining unit 32 is configured to obtain the channel quality of one MTC UE on each of the M initial narrowbands when there is at least one MTC UE. When at least one MTC UE is multiple, obtain the channel quality of each MTC UE on each of the M initial narrowbands among the multiple MTC UEs, and obtain the channel quality of the multiple MTC UEs on each initial narrowband The weighted average of is used as the channel quality of multiple MTC UEs on M initial narrowbands.

Specifically, the acquisition unit 32 can specifically be used for:

For each initial narrowband, receive the SRS sent by each MTC UE on the initial narrowband, and acquire the signal quality of the SRS. Or, for each initial narrowband, receive the DMRS sent with the data by each MTC UE on the initial narrowband, and acquire the signal quality of the DMRS.

Wherein, related technologies such as the MTC UE sending the SRS or DMRS, and the eNB receiving the SRS or DMRS can be understood by referring to the prior art, and details are not described here. Moreover, the transmission bandwidth of the DMRS is the narrowband data transmission bandwidth, that is, the transmission bandwidth of the DMRS is the same as the narrowband data transmission bandwidth.

It is worth noting that, from the perspective of MTC UE, the way to determine the transmission bandwidth of SRS is as follows:

Among them, B _srs is the sending bandwidth; B _narrow is the narrowband bandwidth; is rounded down. That is, the transmission bandwidth of the SRS should be smaller than or equal to the bandwidth of the narrowband.

Or, the acquisition unit 32 can specifically be used for:

For each initial narrowband, receive the CQI on each narrowband fed back by each MTC UE, and acquire the signal quality of the downlink reference signal indicated by the CQI. Or, for each initial narrowband, receive the measurement result on each narrowband fed back by each MTC UE, and acquire the signal quality of the downlink reference signal indicated by the measurement result.

Specifically, the second determination unit 22 may specifically be used for:

According to the channel quality of at least one MTC UE on the M initial narrowbands, N narrowbands with the highest channel quality are determined from the M initial narrowbands.

For example, the M initial narrowbands are arranged in descending order according to the channel quality or the weighted average value of the channel quality, and N are determined from high to low as the N narrowbands.

Optionally, the device for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

The third determining unit 33 is configured to determine a narrowband with the highest channel quality for communication of the at least one MTC UE according to the channel quality of the at least one MTC UE in the N narrowbands, and indicate the channel quality of the at least one MTC UE in the N narrowbands. The highest one communicates on a narrowband.

Alternatively, the broadcasting unit 34 is configured to broadcast the information of the N narrowbands to at least one MTC UE, so that the at least one MTC UE is used to select a narrowband for communication.

Specifically, the manner of broadcasting the N narrowband information to the MTC UE may include:

The eNB broadcasts M flag bit information to the MTC UE, wherein the M flag bits correspond to M initial narrowbands, and it is agreed that when the flag bit is 1, it means that the initial narrowband corresponding to the flag bit is one of the N narrowbands, Or it is agreed that when the flag bit is 0, it means that the initial narrowband corresponding to the flag bit is one of the N narrowbands.

Optionally, the device for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

The storage unit 35 is configured to store a table, which stores the channel quality of each MTC UE on each initial narrowband (the initial narrowband corresponds to a narrowband number). The eNB can also obtain the weighted average of channel quality of all MTC UEs on each initial narrowband through the table.

Optionally, the device for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

The timing unit 36 is configured to periodically determine the number N of narrowbands used to support communication of at least one MTC UE according to the service requirement of at least one MTC UE. And, periodically determine N narrowbands from the M initial narrowbands according to the channel quality of at least one MTC UE on the M initial narrowbands.

Optionally, the device for supporting narrowband communication in a broadband system in this embodiment of the present invention may also include:

The adjustment unit 37 is configured to adjust the number of at least one MTC UE on the N narrowbands according to the communication situation of the at least one MTC UE on the N narrowbands.

For the device and its configuration for supporting narrowband communication in a broadband system in the embodiment of the present invention, reference may be made to the execution actions of the method for supporting narrowband communication in the broadband system in the above-mentioned embodiment, and details that may be referred to are not described here.

As shown in Figure 4, an embodiment of the present invention provides a method for supporting narrowband communication in a broadband system, including:

41. Receive a broadcast message sent by the base station, where the broadcast message carries N narrowband information, and the N narrowband information is obtained in the following manner: the base station determines, according to the service requirement of at least one MTC UE, the The number N of narrowbands communicated by the at least one MTC UE, and the N narrowbands are determined from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands.

42. Determine the N narrowbands from the M initial narrowbands according to the broadcast message, where M≥1≥N≥1.

The method for supporting narrowband communication in the broadband system in the embodiment of the present invention is executed by the MTC UE, and the base station may be an eNB of the LTE system.

In the method for supporting narrowband communication in a broadband system in an embodiment of the present invention, the maximum operating bandwidth of the LTE system is 20M as an example, and 20M is the maximum operating bandwidth of the LTE system. In order to reduce costs, the working bandwidth of the MTC UE can be reduced, for example, to 1.4M, 3M or 5M, etc. 1.4M, 3M or 5M refers to the maximum working bandwidth of the narrowband MTC UE.

It can be seen from the above-mentioned technical solution provided by the present invention that the number of divided narrowbands is limited according to service requirements, and the position of divided narrowbands is limited according to channel quality, so as to avoid arbitrarily dividing multiple narrowbands from broadband and minimize the need for broadband. Segmentation; at the same time, it also makes the scheduling of narrowband MTC UEs more targeted.

In the method for supporting narrowband communication in a broadband system in an embodiment of the present invention, the M initial narrowbands may be determined in the following manner:

The MTC UE divides the broadband used for communication into M initial narrowbands according to the bandwidth of the narrowbands.

Optionally, the MTC UE may agree on an initial narrowband division standard with the eNB, specifically, the eNB and the MTC UE perform division according to a consistent division standard. Or, the eNB determines and divides the initial narrowband division standard, and then broadcasts the initial narrowband division situation to the MTC UE.

In the embodiment of the present invention, in the method for supporting narrowband communication in a broadband system, the corresponding narrowband numbers can be assigned to the M initial narrowbands, such as the narrowband numbers range from 0 to M-1, thereby determining N narrowbands from the M initial narrowbands , the positions of the N narrowbands can be determined by determining the narrowband numbers corresponding to the N narrowbands.

In the method for supporting narrowband communication in the broadband system in the embodiment of the present invention, before receiving the broadcast message sent by the base station, the method may further include:

MTC UE sends SRS on each initial narrowband;

Alternatively, the MTC UE sends DMRS along with the data on each initial narrowband;

Or, the MTC UE feeds back the CQI on each initial narrowband, and the CQI indicates the signal quality of the downlink reference signal;

Or, the MTC UE feeds back the measurement result on each initial narrowband, where the measurement result indicates the signal quality of the downlink reference signal.

Those skilled in the art can understand that the eNB sends a downlink reference signal to the MTC UE on each initial narrowband, and the MTC UE feeds back the CQI or measurement result on each initial narrowband.

Among them, the transmission bandwidth of the SRS is determined by the following method:

Among them, B _srs is the transmission bandwidth; B _narrow is the narrowband bandwidth; is rounded down.

Alternatively, the transmission bandwidth of the DMRS is a narrowband data transmission bandwidth.

The method for supporting narrowband communication in the broadband system in the embodiment of the present invention, after determining N narrowbands from M initial narrowbands according to the broadcast message, may further include:

receiving indication information sent by the base station; determining a narrowband for communication according to the indication information.

It can be seen that after the eNB determines N narrowbands, the eNB schedules the narrowbands for MTC UE communication, and the MTC UEs monitor paging, scheduling, or data transmission in the corresponding narrowbands, and the eNB only paging, scheduling, or for data transfer.

Alternatively, in the data transmission method of the embodiment of the present invention, after determining the N narrowbands from the M initial narrowbands according to the broadcast message, it may further include:

After the eNB determines the N narrowbands, the eNB does not schedule the narrowband for MTC UE communication, but the MTC UE selects the narrowband for its communication. For example, the MTC UE selects the narrowband communication with better channel quality according to its channel quality on the N narrowbands. , that is, the MTC UE monitors paging, scheduling or data transmission in the corresponding narrowband, and the eNB only performs paging, scheduling or data transmission for the MTC UE in the corresponding narrowband.

The method for supporting narrowband communication in a broadband system in an embodiment of the present invention may also include:

When a new MTC UE accesses the network, a narrowband is determined from N narrowbands to initiate access.

Wherein, the manner of determining a narrowband from the N narrowbands includes: selecting the narrowband with the largest narrowband number from the N narrowbands, or selecting the narrowband with the smallest narrowband number from the N narrowbands, or selecting the narrowband with the central frequency band from the N narrowbands . The preferred way is to select the central frequency narrowband from the N narrowbands.

It can be seen that when a new MTC UE accesses the network, it selects a narrowband from N narrowbands to initiate access, and then the MTCUE can perform SRS frequency hopping transmission on the initial narrowband of the cell, or send DMRS with data, or feed back CQI, or feedback measurement results.

The implementation subject of the method for supporting narrowband communication in the broadband system in the embodiment of the present invention, MTC UE, is the opposite end of the execution subject eNB of the method for supporting narrowband communication in the broadband system in the above embodiment. The embodiment of the present invention supports narrowband communication in the broadband system. The actions of the execution subject of the communication method can be understood by referring to the above-mentioned embodiments, and the content that can be referred to will not be repeated here.

As shown in FIG. 5, corresponding to the method for supporting narrowband communication in a broadband system in the foregoing embodiments, an embodiment of the present invention provides an apparatus for supporting narrowband communication in a broadband system, including:

The first receiving unit 51 is configured to receive a broadcast message sent by the base station, the broadcast message carries N narrowband information, and the N narrowband information is obtained by the following method: the base station communicates user equipment MTC according to at least one machine type The service requirement of the UE, determining the number N of narrowbands used to support the communication of the at least one MTC UE, and determining the N narrowbands from the M initial narrowbands according to the channel quality of the at least one MTC UE on the M initial narrowbands narrow band.

The determining unit 52 is configured to determine the N narrowbands from the M initial narrowbands according to the broadcast message, where M≥1≥N≥1.

The device for supporting narrowband communication in the broadband system in the embodiment of the present invention may be set independently or integrated with the MTC UE.

In the embodiment of the present invention, the device supporting narrowband communication in a broadband system can assign corresponding narrowband numbers to the M initial narrowbands, such as the narrowband numbers ranging from 0 to M-1, so that when N narrowbands are determined from the M initial narrowbands , determine the narrowband numbers corresponding to the N narrowbands, that is, the positions of the N narrowbands.

It can be seen from the above-mentioned technical solution provided by the present invention that the number of divided narrowbands is limited according to service requirements, and the position of divided narrowbands is limited according to channel quality, so as to avoid arbitrarily dividing multiple narrowbands from broadband and minimize the need for broadband. Segmentation; at the same time, it also makes the scheduling of narrowband MTC UEs more targeted.

As shown in FIG. 6, the device for supporting narrowband communication in a broadband system in an embodiment of the present invention may further include:

The sending unit 61 is configured to send a sounding reference signal SRS on each initial narrowband, or send a demodulation reference signal DMRS along with data on each initial narrowband, or feed back a CQI on each initial narrowband, the CQI indicating The signal quality of the downlink reference signal, or feeding back a measurement result on each initial narrowband, where the measurement result indicates the signal quality of the downlink reference signal.

The transmission bandwidth of SRS is determined by the following methods:

Among them, B _srs is the sending bandwidth; B _narrow is the narrowband bandwidth; is rounded down.

Alternatively, the transmission bandwidth of the DMRS is a narrowband data transmission bandwidth.

The device for supporting narrowband communication in the broadband system in the embodiment of the present invention may also include:

The second receiving unit 62 is configured to receive the indication information sent by the base station, and at this time the determining unit 52 is further configured to determine the narrowband for communication according to the indication information.

The device for supporting narrowband communication in the broadband system in the embodiment of the present invention may also include:

The access unit 63 is configured to determine a narrowband from N narrowbands to initiate access when a new MTC UE accesses the network.

For the device and its configuration for supporting narrowband communication in a broadband system in the embodiment of the present invention, reference may be made to the execution actions of the method for supporting narrowband communication in the broadband system in the above-mentioned embodiment, and details that may be referred to are not described here.

As shown in Figure 7, the MTC UE sends SRS signals by frequency hopping in the uplink frequency band. The method for supporting narrowband communication in the broadband system in the embodiment of the present invention includes:

71. The MTC UE determines M initial narrowbands, and then sends the SRS by frequency hopping on the M initial narrowbands.

The MTC UE determines M initial narrowbands according to the uplink bandwidth and the narrowband bandwidth. For example, the uplink bandwidth is 110 RB, and the narrowband granularity is 6 RB. Then, it can be divided into 18 initial narrowbands, that is, M=18.

The transmission bandwidth of the SRS is determined by:

Among them, B _srs is the transmission bandwidth of SRS; B _narrow is the narrowband bandwidth; It is rounded down (rounded down refers to taking an integer smaller than the calculated result when the calculated result is not an integer).

72. The eNB determines the number N of narrowbands according to the service requirement of at least one MTC UE in the cell.

73. The eNB calculates the weighted average value of the SRS signal quality of all MTC UEs in each initial narrowband, and selects the N narrowbands with the largest average value as the narrowbands to be used to support MTC communication.

The eNB maintains a table to save the SRS signal quality of each MTC UE on each initial narrowband; thus, the eNB calculates the weighted average of the SRS signal quality of all MTC UEs in each narrowband, and selects the N narrowbands with the largest weighted average as the upcoming Narrowband for supporting MTC communication.

74. The eNB broadcasts N as narrowband information for supporting at least one MTC communication.

The broadcasting mode of the eNB is in the form of a bitmap. For example, the upstream bandwidth is 110RB and the narrowband granularity is 6RB. Then, an 18-bit bitmap value is required to indicate the narrowband position information. The value of the bitmap is 1/0, and the corresponding narrowband is used to support MTC communication. .

75. The eNB instructs at least one MTC UE to perform uplink communication on the narrowband with the highest SRS signal quality according to the SRS signal quality of the MTC UE in the N narrowbands.

The eNB instructs at least one MTC UE to perform uplink communication on the narrowband with the highest SRS signal quality according to the SRS signal quality of the at least one MTC UE in the N narrowbands. That is, for each MTC UE, the eNB tries to determine the narrowband with the best channel quality for the MTC UE to communicate.

The so-called communication means that the MTC UE monitors paging, scheduling or data transmission in the corresponding narrowband, and the eNB only performs paging, scheduling or data transmission for the MTC UE in the corresponding narrowband.

76. The MTC UE performs uplink communication on the narrowband according to the instruction of the eNB.

For example, the MTC UE sends its own PUCCH data on a corresponding narrowband PUCCH (Physical Uplink ControlCHannel, Physical Uplink Control Channel) according to the instruction of the eNB.

In the above 74, the eNB can maintain a cycle, regularly update the narrowband information and broadcast it according to the service requirements of the MTC UEs in the cell and the SRS signal quality fed back by each MTC UE; and in the cycle, the eNB can also schedule The MTC UE performs communication narrowband conversion in each selected narrowband.

In the above 71, if a new MTC UE accesses the network, the new MTC UE first obtains N narrowband positions broadcast by the eNB as the narrowband positions used to support MTC communication, and then the new MTC UE randomly selects a narrowband from the N narrowbands Initiate uplink access, such as the preferred central frequency band narrowband. Then, the new MTC UE performs SRS frequency hopping transmission.

Optionally, when the MTC UE needs to communicate, it jumps back to the narrowband of its communication to communicate; after the communication is completed, the MTC UE can return to the SRS frequency hopping position before the communication to continue the SRS frequency hopping transmission, and the MTC UE can also start from the communication location The narrowband restarts SRS frequency hopping transmission.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) and the like.

Claims (19)

1. the method supporting narrow band communication in broadband system, it is characterised in that include:

According to the demand for services of at least one machine type communication user equipment MTC UE, determine described in being used for supporting at least one Quantity N of the arrowband of individual MTC UE communication；

According at least one MTC UE channel quality on M initial narrow band described, from M initial narrow band, determine institute State N number of arrowband, described M >=1, M >=N, and N >=1；

Described method also includes:

When at least one MTC UE described is one, obtain one MTC UE in M initial narrow band at the beginning of each Channel quality on beginning arrowband；

When at least one MTC UE described is multiple, obtain each MTC UE in multiple MTC UE initially narrow at M Channel quality on each initial narrow band in band, and obtain channel on each initial narrow band described for the plurality of MTC UE The weighted average of quality is as channel quality on M initial narrow band for multiple MTC UE.

2. the method supporting narrow band communication in broadband system according to claim 1, it is characterised in that obtain every Channel quality on each initial narrow band for the individual MTC UE includes:

For each initial narrow band, receive the detection reference signal SRS that each MTC UE sends on initial narrow band, obtain Take the signal quality of described SRS；

Or, for each initial narrow band, receive the demodulation reference letter that each MTC UE sends on initial narrow band with data Number DMRS, obtains the signal quality of described DMRS；

Or, for each initial narrow band, receive the channel quality instruction on each initial narrow band of each MTC UE feedback Symbol CQI, obtains the signal quality of the downlink reference signal of CQI instruction；

Or, for each initial narrow band, receive the measurement result on each initial narrow band of each MTC UE feedback, obtain Take the signal quality of the downlink reference signal of measurement result instruction.

3. the method supporting narrow band communication in broadband system according to claim 2, it is characterised in that described The transmission bandwidth of SRS is determined by the following manner:

Wherein, B_srsFor transmission bandwidth；B_narrowBandwidth for arrowband；For taking downwards Whole；

Or, the transmission bandwidth of described DMRS is the bandwidth B of arrowband_narrow。

4. the method supporting narrow band communication in broadband system according to claim 1, it is characterised in that according to institute State at least one MTC UE channel quality on M initial narrow band, determine described N number of narrow from M initial narrow band Band, comprising:

According at least one MTC UE channel quality on M initial narrow band described, from M initial narrow band, determine letter Road quality described N number of arrowband the highest.

5. the method supporting narrow band communication in broadband system according to claim 4, it is characterised in that from M After determining described N number of arrowband in initial narrow band, described method also includes:

According to channel quality in described N number of arrowband at least one the MTC UE described, determine the highest one of channel quality Arrowband is used for supporting described at least one MTC UE communication, and instruction at least one MTC UE described is in described channel matter Measure and communicate on a highest arrowband；

Or, the information of described N number of arrowband is broadcast at least one MTC UE described, the information quilt of described N number of arrowband At least one MTC UE described is for selecting the arrowband for communication.

6. the method supporting narrow band communication in broadband system according to claim 5, it is characterised in that by described N The information of individual arrowband is broadcast at least one MTC UE described and includes:

M zone bit information is broadcast to described MTC UE, wherein, M flag bit corresponding M initial narrow band respectively, About settled flag bit represents when being 1 that the corresponding initial narrow band of described flag bit is one of N number of arrowband, or about settled mark Position represents when being 0 that the corresponding initial narrow band of described flag bit is one of N number of arrowband.

7. the method supporting narrow band communication in broadband system according to claim 1, it is characterised in that described M Individual initial narrow band is determined by the following manner:

According to the bandwidth of described arrowband, the broadband being used for communication is divided into M initial narrow band.

8. the device supporting narrow band communication in broadband system, it is characterised in that include:

First determining unit, for the demand for services according at least one machine type communication user equipment MTC UE, determines For supporting quantity N of the arrowband of described at least one MTC UE communication；

Second determining unit, for according at least one MTC UE channel quality on M initial narrow band described, from M Individual initial narrow band determines described N number of arrowband, described M >=1, M >=N, and N >=1；

Described device also includes:

Acquiring unit, for when at least one MTC UE described is one, obtains a described MTC UE at the beginning of M Channel quality on each initial narrow band in beginning arrowband；When at least one MTC UE described is multiple, obtain multiple Each MTC UE channel quality on each initial narrow band in M initial narrow band in MTC UE, and obtain the plurality of The weighted average of channel quality on each initial narrow band described for the MTC UE is initially narrow at M as multiple MTC UE Channel quality on band.

9. the device supporting narrow band communication in broadband system according to claim 8, it is characterised in that

Described acquiring unit, is additionally operable to:

For each initial narrow band, receive the detection reference signal SRS that each MTC UE sends on initial narrow band, obtain Take the signal quality of described SRS；

Or, for each initial narrow band, receive the demodulated reference signal that each MTC UE sends on initial narrow band DMRS, obtains the signal quality of described DMRS；

Or, for each initial narrow band, receive the channel quality instruction on each initial narrow band of each MTC UE feedback Symbol CQI, obtains the signal quality of the downlink reference signal of CQI instruction；

Or, for each initial narrow band, receive the measurement result on each initial narrow band of each MTC UE feedback, obtain Take the signal quality of the downlink reference signal of measurement result instruction.

10. the device supporting narrow band communication in broadband system according to claim 8, it is characterised in that described the Two determining units, are used for:

According at least one MTC UE channel quality on M initial narrow band described, from M initial narrow band, determine letter Road quality described N number of arrowband the highest.

11. devices supporting narrow band communication in broadband system according to claim 10, it is characterised in that described Device also includes:

3rd determining unit, for according to channel quality in described N number of arrowband at least one the MTC UE described, determines A highest arrowband of channel quality is used for supporting described at least one MTC UE communication, and instruction described at least one MTC UE communicates on a highest arrowband of described channel quality；

Or, radio unit, for being broadcast at least one MTC UE described, in order to institute by the information of described N number of arrowband State at least one MTC UE for selecting the arrowband for communication.

12. 1 kinds of methods supporting narrow band communication in broadband system, it is characterised in that include:

Receiving the broadcast that base station sends, described broadcast carries the information of N number of arrowband, the information of described N number of arrowband Obtained by the following manner: described base station is according to the demand for services of at least one machine type communication user equipment MTC UE, really Fixed for supporting quantity N of the arrowband of described at least one MTC UE communication, according at least one MTC UE described at M Channel quality on individual initial narrow band, determines described N number of arrowband from M initial narrow band；

Determine described N number of arrowband according to described broadcast from M initial narrow band, described M >=1, M >=N, and N >= 1；

Wherein, after determining described N number of arrowband from M initial narrow band according to described broadcast, described method is also wrapped Include:

Receive the instruction information that described base station sends；

Determine the arrowband communicating according to described instruction information.

13. methods supporting narrow band communication in broadband system according to claim 12, it is characterised in that receive Before the broadcast that base station sends, described method also includes:

Each initial narrow band sends detection reference signal SRS to described base station；

Or, each initial narrow band sends demodulated reference signal DMRS to described base station with data；

Or, on each initial narrow band, feedback channel quality designator CQI gives described base station, and described CQI indicating downlink is joined Examine the signal quality of signal；

Or, on each initial narrow band, feedback measurement gives described base station, and described measurement result indicating downlink is with reference to letter Number signal quality.

14. methods supporting narrow band communication in broadband system according to claim 13, it is characterised in that described The transmission bandwidth of SRS is determined by the following manner:

Wherein, B_srsFor transmission bandwidth；B_narrowBandwidth for arrowband；For taking downwards Whole；

Or, the transmission bandwidth of described DMRS is the bandwidth of the data transmission of MTC UE.

15. methods supporting narrow band communication in broadband system according to claim 14, it is characterised in that described M initial narrow band is determined by the following manner:

According to the bandwidth of described arrowband, the broadband being used for communication is divided into M initial narrow band.

16. methods supporting narrow band communication in broadband system according to claim 12, it is characterised in that described Method also includes:

During new MTC UE access network, from described N number of arrowband, determine that an arrowband initiates to access.

17. the device supporting narrow band communication in broadband system, it is characterised in that include:

First receiving unit, for receiving the broadcast that base station sends, described broadcast carries the information of N number of arrowband, The information of described N number of arrowband is obtained by the following manner: described base station is according at least one machine type communication user equipment MTC The demand for services of UE, determines quantity N of arrowband for supporting at least one MTC UE described communication, according to described at least One MTC UE channel quality on M initial narrow band, determines described N number of arrowband from M initial narrow band；

Determining unit, for determining described N number of arrowband from M initial narrow band according to described broadcast, described M >= 1, M >=N, and N >=1；

Described device also includes:

First receiving unit, for receive described base station send instruction information, and according to described instruction information determine into The arrowband of row communication.

18. devices supporting narrow band communication in broadband system according to claim 17, it is characterised in that described Device also includes:

Transmitting element, for transmission detection reference signal SRS on each initial narrow band, or, at each initial narrow band On with data send demodulated reference signal DMRS, or, on each initial narrow band, feedback channel quality designator CQI gives Described base station, the signal quality of described CQI indicating downlink reference signal；Or, feedback measurement knot on each initial narrow band Fruit gives described base station, the signal quality of described measurement result indicating downlink reference signal.

19. devices supporting narrow band communication in broadband system according to claim 17, it is characterised in that described Device also includes:

Access unit, when being used for new MTC UE access network, determines that from described N number of arrowband an arrowband initiates to connect Enter.