CN103379552A - Method and device for supporting narrow-band communication in broadband system - Google Patents
Method and device for supporting narrow-band communication in broadband system Download PDFInfo
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- CN103379552A CN103379552A CN2012101241133A CN201210124113A CN103379552A CN 103379552 A CN103379552 A CN 103379552A CN 2012101241133 A CN2012101241133 A CN 2012101241133A CN 201210124113 A CN201210124113 A CN 201210124113A CN 103379552 A CN103379552 A CN 103379552A
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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Abstract
The embodiment of the invention discloses a method and a device for supporting narrow-band communication in a broadband system. The method for supporting the narrow-band communication in the broadband system comprises the steps of confirming the quantity N of narrow bands for supporting communication of at least one set of machine-type communication user equipment (MTC UE) according to at least one service requirement of the MTC UE, and confirming the N narrow bands from M initial narrow bands according to channel quality of the at least one set of MTC UE on the M initial narrow bands, wherein M>=1>=N>=1. The method and the device for supporting the narrow-band communication in the broadband system restrict the quantity and positions of the narrow bands according to service requirements, and reduce separation to the broadband to the greatest extent, dispatch to the MTC UE is made to be more targeted, and the MTC UE can adjust working band conveniently to receive information.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of method and device of supporting narrow band communication in broadband system.
Background technology
" Provision of low-cost MTC UEs based on LTE " refers to provide (the Long Term Evolution based on LTE, Long Term Evolution) the low-cost MTC of system (machine type communication, machine type communication) UE (User Equipment, subscriber equipment), its purpose be to be provided as originally can with GSM (Global System for Mobile communications, global system for mobile communications)/GPRS (General Packet Radio Service, general packet radio service) the subscriber equipment cost is compared, even than GSM/GPRS subscriber equipment cost low LTE subscriber equipment also, to replace at M2M (machine type communication, machine is to machine communication) the GSM/GPRS subscriber equipment used in using, so that the service provider that M2M uses can select the LTE network to provide M2M to use, thereby realize that M2M uses from GSM/GRPS network moving to the LTE network.
At present, realize one of mode of low-cost MTC UE, to reduce the transmitting/receiving bandwidth that subscriber equipment is supported, as in the broadband, dividing a plurality of arrowbands, from a plurality of arrowbands, select preferably arrowband of service quality, be used for the transfer of data between UE and the eNodeB (Evolved NodeB, evolved base station are called for short eNB).If but arbitrarily from the broadband, divide a plurality of arrowbands, can affect the support for the UE that large bandwidth demand is arranged; Simultaneously, so that too random for the scheduling of MTC UE, be unfavorable for that MTC UE adjusts working band and reception information.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of method and device of supporting narrow band communication in broadband system, quantity and the position of realizing the restriction arrowband.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
On the one hand, the embodiment of the invention provides a kind of method of supporting narrow band communication in broadband system, comprising:
According to the demand for services of at least one machine type communication subscriber equipment MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication;
According to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband, described M 〉=1 〉=N 〉=1.
Corresponding, the embodiment of the invention provides a kind of device of supporting narrow band communication in broadband system, comprising:
The first determining unit is used for the demand for services according at least one machine type communication subscriber equipment MTC UE, is identified for supporting quantity N of arrowband of described at least one MTC UE communication;
The second determining unit is used for the channel quality on M initial arrowband according to described at least one MTC UE, determines a described N arrowband, described M 〉=1 〉=N 〉=1 from M initial arrowband.
On the other hand, the embodiment of the invention provides a kind of method of supporting narrow band communication in broadband system, comprising:
Receive the broadcast that the base station sends, described broadcast is carried the information of N arrowband, the information of a described N arrowband is obtained by following mode: described base station is according to the demand for services of at least one machine type communication subscriber equipment MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband;
From M initial arrowband, determine a described N arrowband, described M 〉=1 〉=N 〉=1 according to described broadcast.
Corresponding, the embodiment of the invention provides a kind of device of supporting narrow band communication in broadband system, comprising:
The first receiving element, be used for receiving the broadcast that the base station sends, described broadcast is carried the information of N arrowband, the information of a described N arrowband is obtained by following mode: the demand for services of at least one machine type communication subscriber equipment MTC UE of described base station, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband;
Determining unit is used for determining a described N arrowband, described M 〉=1 〉=N 〉=1 according to described broadcast from M initial arrowband.
As seen from the above technical solution provided by the invention, limited the quantity of the arrowband of dividing according to demand for services, and according to the position that channel quality has limited the arrowband of dividing, avoid arbitrarily from the broadband, dividing a plurality of arrowbands, reduce isolating for the broadband as far as possible; Simultaneously, also so that more targeted for the scheduling of MTC UE, be convenient to MTC UE and adjust working band and receive information.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The schematic flow sheet of in broadband system, supporting the method for narrow band communication that Fig. 1 provides for one embodiment of the invention.
The formation schematic diagram one of in broadband system, supporting the device of narrow band communication that Fig. 2 provides for one embodiment of the invention.
The formation schematic diagram two of in broadband system, supporting the device of narrow band communication that Fig. 3 provides for one embodiment of the invention.
The schematic flow sheet of in broadband system, supporting the method for narrow band communication that Fig. 4 provides for another embodiment of the present invention.
The formation schematic diagram one of in broadband system, supporting the device of narrow band communication that Fig. 5 provides for another embodiment of the present invention.
The formation schematic diagram two of in broadband system, supporting the device of narrow band communication that Fig. 6 provides for another embodiment of the present invention.
The application scenarios schematic diagram of in broadband system, supporting the method for narrow band communication that Fig. 7 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, the embodiment of the invention provides a kind of method of supporting narrow band communication in broadband system, comprising:
11, according to the demand for services of at least one MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication.
12, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband, described M 〉=1 〉=N 〉=1.
The embodiment of the invention supports that in broadband system the executive agent of the method for narrow band communication is the base station.Exemplary, the eNodeB of base station such as LTE system (being called for short eNB).
The embodiment of the invention supports in broadband system in the method for narrow band communication, and take the maximum of LTE system as 20M as example, 20M is the maximum of LTE system.In order to reduce cost, can reduce the bandwidth of operation of MTC UE, such as being reduced to 1.4M, 3M or 5M etc., 1.4M, 3M or 5M namely refer to the maximum of arrowband MTC UE.
The embodiment of the invention is supported in the method for narrow band communication in broadband system, can be M the arrowband numbering that initial narrowband assignments is corresponding, be 0 to M-1 such as arrowband numbering numerical value, thereby, when from the initial arrowband of M, determining N arrowband, determine that arrowband corresponding to N arrowband number the position that can determine N arrowband.
The embodiment of the invention supports in broadband system in the method for narrow band communication, can be according to the demand for services of MTC UE in (residential quarter) in the control range of base station, be identified for supporting quantity N of arrowband of MTC UE communication.Demand for services provides service such as needs for what UE, perhaps needs to provide how many data rates, etc.Exemplary, such as the control channel capacity of an arrowband, can only dispatch simultaneously 100 UE, so, if (residential quarter) has 230 UE in the control range of base station, will distribute at least 3 arrowbands so, specifically can be understood with reference to prior art, therefore not to repeat here.
The embodiment of the invention supports in broadband system in the method for narrow band communication that described M initial arrowband can be determined by following mode:
ENB will be divided into for the broadband of communication M initial arrowband according to the bandwidth of arrowband.
Optionally, eNB can arrange with MTC UE the criteria for classifying of initial arrowband, specifically divided according to the consistent criteria for classifying respectively with MTC UE by eNB, such as (the Radio Bearer take bandwidth as 110RB, radio bearer), the arrowband granularity is that 6RB is example, so, can be divided into 18 initial arrowbands, i.e. M=18.Perhaps, eNB determines the criteria for classifying of initial arrowband and divides that the dividing condition with initial arrowband is broadcast to MTC UE again.
As seen from the above technical solution provided by the invention, limit the quantity of arrowband according to demand for services, and according to the position that channel quality has limited the arrowband, avoided arbitrarily from the broadband, dividing a plurality of arrowbands, reduced isolating for the broadband as far as possible; Simultaneously, also so that more targeted for the scheduling of MTC UE, be convenient to MTC UE and adjust working band and receive information.
Further, the embodiment of the invention is supported the method for narrow band communication in broadband system, can also comprise:
When at least one MTC UE is one, obtain this MTC UE channel quality on each initial arrowband in M initial arrowband.
As at least one MTC UE when being a plurality of, obtain the channel quality on each initial arrowband in M initial arrowband of each MTC UE among a plurality of MTC UE, and obtain a plurality of MTC UE at the weighted average of the channel quality on each initial arrowband as the channel quality of a plurality of MTC UE on M initial arrowband.
Optionally, eNB can safeguard a form, the channel quality of each MTC UE of this table storage on each initial arrowband (initial arrowband is to there being the arrowband numbering).ENB by this form also can obtain on each initial arrowband, the weighted average of the channel quality of all MTC UE, as for the arrowband of arrowband numbering 0, according to the channel quality of each MTC UE on the arrowband of arrowband numbering 0, the channel quality weighting is averaged.
Optionally, obtain the mode of the channel quality of each MTC UE on each initial arrowband, specifically include but not limited to:
For each initial arrowband, eNB receives each MTC UE at the SRS (Sounding Reference Signal, detection reference signal) that initial arrowband sends, and obtains the signal quality of SRS.
Perhaps, for each initial arrowband, eNB receives the DMRS (Demodulation Reference Signal, demodulated reference signal) that each MTC UE sends with data on initial arrowband, obtains the signal quality of DMRS.
Wherein, it will be understood by those skilled in the art that MTC UE sends SRS or DMRS, and eNB receive the correlation techniques such as SRS or DMRS can with reference to prior art to understand, therefore not to repeat here.And the transmission bandwidth of DMRS is the data transmission bandwidth of arrowband, and namely the data transmission bandwidth of the transmission bandwidth of DMRS and arrowband is the same.
What deserves to be explained is, from the angle introduction of MTC UE, definite mode of the transmission bandwidth of SRS:
The transmission bandwidth that is SRS is less than the bandwidth that equals the arrowband.
As seen, the embodiment of the invention is supported the method for narrow band communication in broadband system, has limited quantity and the position of arrowband, reduces the transmitted bandwidth that MTC UE supports, reduces isolating for up broadband as far as possible.Wherein, the communication of up finger from MTC UE to the eNB direction.
Perhaps, obtain the mode of the channel quality of each MTC UE on each initial arrowband, specifically include but not limited to:
For each initial arrowband, eNB receives the CQI (Channel Quality Indicator, CQI) on each initial arrowband of each MTC UE feedback, obtains the signal quality of the downlink reference signal of CQI indication.
Namely, UE obtains the quality of down channel by measuring downlink reference signal, and feeds back to the base station by the mode of CQI.The base station namely obtains the quality of down channel by the quality of CQI acquisition downlink reference signal.
Perhaps, for each initial arrowband, eNB receives the measurement result on each initial arrowband of each MTC UE feedback, obtains the signal quality of the downlink reference signal of measurement result indication.
Wherein, it will be understood by those skilled in the art that eNB sends downlink reference signal to MTCUE in each initial arrowband, CQI or measurement result on each initial arrowband of MTC UE feedback.MTC UE feedback CQI or measurement result, and eNB receive the correlation techniques such as CQI or measurement can with reference to prior art to understand, therefore not to repeat here.
As seen, the embodiment of the invention is supported the method for narrow band communication in broadband system, reduces reception (descending) bandwidth that MTC UE supports, also so that eNB is more targeted for the scheduling of MTC UE, is convenient to MTC UE and adjusts working band reception information.Wherein, the communication of descending finger from eNB to MTC UE direction.
Concrete, above-mentioned steps 12 according to the channel quality of MTC UE on M initial arrowband, is determined N arrowband from M initial arrowband, can comprise:
According to the channel quality of at least one MTC UE on M initial arrowband, from M initial arrowband, determine described N the highest arrowband of channel quality.
For example, with the weighted average descending of M initial arrowband according to channel quality or channel quality, determine from high to low N as a described N arrowband.
Wherein, as MTC UE when being a plurality of, channel quality is the weighted average of the channel quality of a plurality of MTC UE on initial arrowband.
Further, above-mentioned steps 12, determine that from M initial arrowband the embodiment of the invention is supported the method for narrow band communication in broadband system, can also comprise after N the arrowband:
According to the channel quality of at least one MTC UE in N arrowband, determine that a highest arrowband of channel quality is used for supporting described at least one MTC UE communication, and indicate described at least one MTC UE to communicate by letter in a highest arrowband of described channel quality.
That is, for any one MTC UE, eNB can determine the channel quality of this MTC UE in N arrowband, and eNB therefrom selects an arrowband as the arrowband of supporting this MTC UE communication.
Certainly, eNB also can have other strategies to determine to support the arrowband of this MTC UE communication, and is unrestricted.
As seen, after eNB determines N arrowband, the arrowband that eNB can also communicate according to the channel quality indication MTC UE of N arrowband.Communication refers to that MTC UE monitors paging, dispatches or carry out transfer of data in corresponding arrowband, etc.ENB also only carries out paging, scheduling or transfer of data to MTC UE on corresponding arrowband, etc.
Perhaps, above-mentioned steps 12, determine that from M initial arrowband the embodiment of the invention is supported the method for narrow band communication in broadband system, can also comprise after the described N arrowband:
Give described at least one MTC UE with the information broadcasting of a described N arrowband, so that at least one MTC UE is used for selecting to be used for the arrowband of communication.
Wherein, the broadcast mode of N arrowband of eNB broadcasting can use the IE (Information Element, information unit) that increases in traditional system message, perhaps increases a dedicated system message.
As seen, after eNB determines N arrowband, eNB does not dispatch the arrowband of MTC UE communication, but selected the arrowband of its communication by MTC UE, such as MTC UE according to its channel quality on N arrowband, select the reasonable arrowband of signal quality to communicate, namely MTC UE monitors paging, dispatches or carries out transfer of data in corresponding arrowband, and eNB also only carries out paging, scheduling or transfer of data to MTC UE on corresponding arrowband.
Particularly, the mode with the information broadcasting of a described N arrowband is given described MTC UE can comprise:
ENB gives described MTC UE with M flag bit information broadcasting, wherein, corresponding M initial arrowband of M flag bit difference, settled approximately flag bit is to represent that the corresponding initial arrowband of described flag bit was in N the arrowband at 1 o'clock, perhaps settled approximately flag bit be represented in 0 o'clock described flag bit correspondence initially the arrowband be in N the arrowband one.
Be 110RB such as upstream bandwidth, the arrowband granularity is that 6RB is example, so, can be divided into 18 initial arrowbands, and so, these 18 initial arrowbands can perhaps be numbered from the low frequency to the high frequency from the high frequency to the low frequency, and numbering is such as 0-17.Can come with 18 bitmap one by one the initial arrowband of corresponding this 0-17, such as 0 flag bit of bitmap just expression be numbered 0 initial arrowband, the like.So, if 0 flag bit of bitmap is 1/0, so just representing the 0th initial arrowband, can be used for MTC UE communication, is exactly one of N arrowband selecting, otherwise corresponding initial arrowband just is not used in the communication of MTC UE.
Further, the embodiment of the invention is supported the method for narrow band communication in broadband system, can also comprise:
Periodically according to the demand for services of at least one MTC UE, be identified for supporting quantity N of arrowband of at least one MTC UE communication.
And, periodically according to the channel quality of at least one MTC UE on M initial arrowband, from M initial arrowband, determine N arrowband.
The above-mentioned cycle can determine according to concrete scene and concrete needs, and can adjust, and do not do at this and gives unnecessary details.As seen, eNB determines as far as possible that from M initial arrowband the reasonable N of a channel quality arrowband is used for MTC UE communication.
Further, the embodiment of the invention is supported the method for narrow band communication in broadband system, can also comprise:
ENB adjusts the number of at least one MTCUE on N the arrowband according to the signal intelligence of at least one MTC UE on N the arrowband.
As seen, eNB also can dispatch MTC UE and communicate the arrowband conversion in each selected arrowband, satisfies in the situation of MTC UE service request, allows MTC UE be evenly distributed on each arrowband as far as possible.
Those skilled in the art can know, resource on arrowband is limited, if the MTC UE that communicates by letter on certain arrowband is too much, so, when too much MTC UE needs resource, the inadequate situation of resource will occur, the resource requirement of MTC UE just can not in time be satisfied so, and the user experiences and will reduce.Therefore, eNB provides the mode of adjustment of load according to the signal intelligence of MTC UE on N the arrowband, so that the MTC UE quantity of communicating by letter on a plurality of arrowband is relatively average, to avoid defects.
As shown in Figure 2, in broadband system, support the method for narrow band communication, the embodiment of the invention that a kind of device of supporting narrow band communication in broadband system is provided corresponding to above-described embodiment, comprising:
The first determining unit 21 is used for the demand for services according at least one MTC UE, is identified for supporting the quantity N of the arrowband of described at least one MTC UE communication.
The second determining unit 22 is used for the channel quality on M initial arrowband according to described at least one MTC UE, determines a described N arrowband, described M 〉=1 〉=N 〉=1 from M initial arrowband.
The embodiment of the invention is supported the device of narrow band communication in broadband system, can arrange separately or be arranged at one with the base station.Exemplary, the eNB of base station such as LTE system.
The embodiment of the invention supports in broadband system in the device of narrow band communication, and take the maximum of LTE system as 20M as example, 20M is the maximum of LTE system.In order to reduce cost, can reduce the bandwidth of operation of MTC UE, such as being reduced to 1.4M, 3M or 5M etc., 1.4M, 3M or 5M namely refer to the maximum of arrowband MTC UE.
The embodiment of the invention is supported in the device of narrow band communication in broadband system, can be M the arrowband numbering that initial narrowband assignments is corresponding, be 0 to M-1 such as arrowband numbering numerical value, thereby, when from the initial arrowband of M, determining N arrowband, determine that arrowband corresponding to N arrowband number the position that can determine N arrowband.
As seen from the above technical solution provided by the invention, limit the quantity of arrowband according to demand for services, and according to the position that channel quality has limited the arrowband, avoided arbitrarily from the broadband, dividing a plurality of arrowbands, reduced isolating for the broadband as far as possible; Simultaneously, also so that more targeted for the scheduling of MTC UE, be convenient to MTC UE and adjust working band and receive information.
As shown in Figure 3, the embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
The embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
Acquiring unit 32 is used for when at least one MTC UE is one, obtains MTC UE channel quality on each initial arrowband in M initial arrowband.As at least one MTC UE when being a plurality of, obtain the channel quality on each initial arrowband in M initial arrowband of each MTC UE among a plurality of MTC UE, and obtain a plurality of MTC UE at the weighted average of the channel quality on each initial arrowband as the channel quality of a plurality of MTC UE on M initial arrowband.
Particularly, acquiring unit 32 specifically can be used for:
For each initial arrowband, receive each MTC UE at the SRS that initial arrowband sends, obtain the signal quality of SRS.Perhaps, for each initial arrowband, receive the DMRS that each MTC UE sends with data on initial arrowband, obtain the signal quality of DMRS.
Wherein, MTC UE sends SRS or DMRS, and eNB receive the correlation techniques such as SRS or DMRS can with reference to prior art to understand, therefore not to repeat here.And the transmission bandwidth of DMRS is the data transmission bandwidth of arrowband, and namely the data transmission bandwidth of the transmission bandwidth of DMRS and arrowband is the same.
What deserves to be explained is, from the angle introduction of MTC UE, definite mode of the transmission bandwidth of SRS:
Perhaps, acquiring unit 32 specifically can be used for:
For each initial arrowband, receive the CQI on each arrowband of each MTC UE feedback, obtain the signal quality of the downlink reference signal of CQI indication.Perhaps, for each initial arrowband, receive the measurement result on each arrowband of each MTC UE feedback, obtain the signal quality of the downlink reference signal of measurement result indication.
Particularly, the second determining unit 22 specifically can be used for:
According to the channel quality of at least one MTC UE on M initial arrowband, from M initial arrowband, determine N the highest arrowband of channel quality.
For example, with the weighted average descending of M initial arrowband according to channel quality or channel quality, determine from high to low N as N arrowband.
Optionally, the embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
The 3rd determining unit 33, be used for according to the channel quality of at least one MTC UE in a described N arrowband, determine that a highest arrowband of channel quality is used for described at least one MTC UE communication, and indicate at least one MTC UE to communicate by letter in a highest arrowband of channel quality.
Perhaps, radio unit 34 is for giving at least one MTC UE with the information broadcasting of N arrowband, so that at least one MTC UE is used for selection for the arrowband of communicating by letter.
Particularly, with the information broadcasting of N the arrowband mode to MTC UE, can comprise:
ENB gives described MTC UE with M flag bit information broadcasting, wherein, corresponding M initial arrowband of M flag bit difference, settled approximately flag bit is to represent that the corresponding initial arrowband of described flag bit was in N the arrowband at 1 o'clock, perhaps settled approximately flag bit be represented in 0 o'clock described flag bit correspondence initially the arrowband be in N the arrowband one.
Optionally, the embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
Optionally, the embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
Timing unit 36 is used for periodically according to the demand for services of at least one MTC UE, is identified for supporting quantity N of arrowband of at least one MTC UE communication.And, periodically according to the channel quality of at least one MTC UE on M initial arrowband, from M initial arrowband, determine N arrowband.
Optionally, the embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
Adjustment unit 37 is used for the signal intelligence according at least one MTC UE on N the arrowband, adjusts the number of at least one MTC UE on N the arrowband.
The embodiment of the invention is supported device and the formation thereof of narrow band communication in broadband system, can be corresponding support the execution action of the method for narrow band communication with reference to above-described embodiment in broadband system, and for content that can reference, therefore not to repeat here.
As shown in Figure 4, the embodiment of the invention provides a kind of method of supporting narrow band communication in broadband system, comprising:
41, receive the broadcast that the base station sends, described broadcast is carried the information of N arrowband, the information of a described N arrowband is obtained by following mode: described base station is according to the demand for services of at least one MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband.
42, from M initial arrowband, determine a described N arrowband, described M 〉=1 〉=N 〉=1 according to described broadcast.
The embodiment of the invention supports that in broadband system the executive agent of the method for narrow band communication is MTC UE, and the base station can be such as the eNB of LTE system.
The embodiment of the invention is supported the method for narrow band communication in broadband system, take the maximum of LTE system as 20M as example, 20M is the maximum of LTE system.In order to reduce cost, can reduce the bandwidth of operation of MTC UE, such as being reduced to 1.4M, 3M or 5M etc., 1.4M, 3M or 5M namely refer to the maximum of arrowband MTC UE.
As seen from the above technical solution provided by the invention, limited the quantity of the arrowband of dividing according to demand for services, and according to the position that channel quality has limited the arrowband of dividing, avoid arbitrarily from the broadband, dividing a plurality of arrowbands, reduce isolating for the broadband as far as possible; Simultaneously, also so that more targeted for the scheduling of arrowband MTC UE.
The embodiment of the invention supports in broadband system in the method for narrow band communication that M initial arrowband can be determined by following mode:
MTC UE will be divided into for the broadband of communication M initial arrowband according to the bandwidth of described arrowband.
Optionally, MTC UE can eNB and the criteria for classifying of the initial arrowband of agreement, is specifically divided according to the consistent criteria for classifying respectively with MTC UE by eNB.Perhaps, eNB determines the criteria for classifying of initial arrowband and divides that the dividing condition with initial arrowband is broadcast to MTC UE again.
The embodiment of the invention is supported in the method for narrow band communication in broadband system, can be M the arrowband numbering that initial narrowband assignments is corresponding, be 0 to M-1 such as arrowband numbering numerical value, thereby, when from the initial arrowband of M, determining N arrowband, determine that arrowband corresponding to N arrowband number the position that can determine N arrowband.
The embodiment of the invention is supported in broadband system in the method for narrow band communication, receives before the broadcast of base station transmission, and described method can also comprise:
MTC UE sends SRS in each initial arrowband;
Perhaps, MTC UE sends DMRS with data on each initial arrowband;
Perhaps, MTC UE feeds back the CQI on each initial arrowband, the signal quality of described CQI indicating downlink reference signal;
Perhaps, MTC UE feeds back the measurement result on each initial arrowband, the signal quality of described measurement result indicating downlink reference signal.
Wherein, it will be understood by those skilled in the art that eNB sends downlink reference signal to MTCUE in each initial arrowband, CQI or measurement result on each initial arrowband of MTC UE feedback.
Wherein, the transmission bandwidth of SRS is determined by following mode:
Perhaps, the transmission bandwidth of described DMRS is the data transmission bandwidth of arrowband.
The embodiment of the invention is supported the method for narrow band communication in broadband system, after definite N arrowband, can also comprise from M initial arrowband according to broadcast:
Receive the indication information that described base station sends; Determine the arrowband that communicates according to described indication information.
As seen, after eNB determines N arrowband, the arrowband of eNB scheduling MTC UE communication, MTC UE monitors paging, dispatches or carries out transfer of data in corresponding arrowband, and eNB also only carries out paging, dispatches or carries out transfer of data in corresponding arrowband to MTC UE.
Perhaps, embodiment of the invention data transmission method after the definite described N arrowband, can also comprise from M initial arrowband according to described broadcast:
After eNB determines N arrowband, eNB does not dispatch the arrowband of MTC UE communication, but selected the arrowband of its communication by MTC UE, such as MTC UE according to its channel quality on N arrowband, the selective channel mass ratio is narrow band communication preferably, be that MTC UE monitors paging, dispatches or carry out transfer of data in corresponding arrowband, eNB also only carries out paging, dispatches or carries out transfer of data to MTC UE on corresponding arrowband.
The embodiment of the invention is supported the method for narrow band communication in broadband system, can also comprise:
During new MTC UE access network, determine that from N arrowband an arrowband initiates access.
Wherein, determine the mode of an arrowband from N arrowband, comprising: select the maximum arrowband of numbering, arrowband from N arrowband, perhaps minimum arrowband is numbered in the arrowband from N arrowband, perhaps selects the arrowband of center frequency-band from N arrowband.Optimal way is to select the center frequency-band arrowband from N arrowband.
As seen, during new MTC UE access network, select an arrowband to initiate access from N arrowband, then MTCUE can carry out in the initial arrowband of residential quarter the SRS frequency hopping and sends, and perhaps sends DMRS with data, perhaps feeds back CQI, perhaps feeds back measurement result.
The embodiment of the invention is supported the executive agent MTC UE of the method for narrow band communication in broadband system, in broadband system, support the opposite end of executive agent eNB of the method for narrow band communication as above-described embodiment, the embodiment of the invention is supported the action of executive agent of the method for narrow band communication in broadband system, can be understood with reference to the above-mentioned example of having implemented, for content that can reference, therefore not to repeat here.
As shown in Figure 5, in broadband system, support the method for narrow band communication, the embodiment of the invention that a kind of device of supporting narrow band communication in broadband system is provided corresponding to above-described embodiment, comprising:
The first receiving element 51, be used for receiving the broadcast that the base station sends, described broadcast is carried the information of N arrowband, the information of a described N arrowband is obtained by following mode: described base station is according to the demand for services of at least one machine type communication subscriber equipment MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband.
Determining unit 52 is used for determining a described N arrowband, described M 〉=1 〉=N 〉=1 according to described broadcast from M initial arrowband.
The embodiment of the invention is supported the device of narrow band communication in broadband system, can arrange separately or be arranged at one with MTC UE.
The embodiment of the invention is supported the device of narrow band communication in broadband system, can be M the arrowband numbering that initial narrowband assignments is corresponding, be 0 to M-1 such as arrowband numbering numerical value, thereby, when from M initial arrowband, determining N arrowband, determine that N arrowband numbering corresponding to arrowband gets final product the position of N arrowband.
As seen from the above technical solution provided by the invention, limited the quantity of the arrowband of dividing according to demand for services, and according to the position that channel quality has limited the arrowband of dividing, avoid arbitrarily from the broadband, dividing a plurality of arrowbands, reduce isolating for the broadband as far as possible; Simultaneously, also so that more targeted for the scheduling of arrowband MTC UE.
As shown in Figure 6, the embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
Transmitting element 61, be used for sending detection reference signal SRS in each initial arrowband, perhaps, on each initial arrowband, send demodulated reference signal DMRS with data, perhaps, feed back the CQI on each initial arrowband, the signal quality of described CQI indicating downlink reference signal, perhaps, feed back the measurement result on each initial arrowband, the signal quality of described measurement result indicating downlink reference signal.
The transmission bandwidth of SRS is determined by following mode:
Perhaps, the transmission bandwidth of described DMRS is the data transmission bandwidth of arrowband.
The embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
The second receiving element 62 is used for receiving the indication information that described base station sends, and this moment, determining unit 52 also was used for determining the arrowband that communicates according to described indication information.
The embodiment of the invention is supported the device of narrow band communication in broadband system, can also comprise:
Access unit 63 when being used for new MTC UE access network, is determined an arrowband initiation access from N arrowband.
The embodiment of the invention is supported device and the formation thereof of narrow band communication in broadband system, can be corresponding support the execution action of the method for narrow band communication with reference to above-described embodiment in broadband system, and for content that can reference, therefore not to repeat here.
As shown in Figure 7, MTC UE takes place frequently at the upstream band introskip and send the SRS signal, and the embodiment of the invention is supported the method for narrow band communication in broadband system, comprising:
71, MTC UE determines M initial arrowband, and then frequency hopping sends SRS on M initial arrowband.
MTC UE determines the initial arrowband of M according to the bandwidth of upstream bandwidth and arrowband, and as take upstream bandwidth as 110RB, the arrowband granularity is 6RB, so, can be divided into 18 initial arrowbands, i.e. M=18.
The transmission bandwidth of SRS is determined by lower:
Wherein, B
SrsTransmission bandwidth for SRS; B
NarrowBandwidth for the arrowband;
For rounding (round finger when the result who calculates get integer less than result of calculation during not for integer) downwards downwards.
72, eNB determines the quantity N of arrowband according to the demand for services of at least one MTC UE in the residential quarter.
73, eNB calculates in each initial arrowband, and the weighted mean of the SRS signal quality of all MTC UE selects N arrowband of average maximum as the arrowband that is about to be used for supporting MTC communication.
ENB safeguards a form, preserves the SRS signal quality of each MTC UE on each initial arrowband; Thereby eNB calculates in each arrowband, and the weighted average of the SRS signal quality of all MTC UE selects N arrowband of weighted average maximum as the arrowband that is about to be used for supporting MTC communication.
74, N conduct of eNB broadcasting is used for supporting the narrow band information of at least one MTC communication.
The broadcast mode of eNB such as the form of bitmap.Take upstream bandwidth as 110RB, the arrowband granularity is that 6RB is example, so, just needs 18 bitmap value to be used to indicate the arrowband positional information, and the value of bitmap is 1/0 indication, and corresponding arrowband is for the arrowband of supporting MTC communication.
75, eNB indicates at least one MTC UE to carry out uplink communication in the arrowband of SRS signal quality maximum according to the SRS signal quality of MTC UE in N arrowband.
ENB indicates at least one MTC UE to carry out uplink communication in the arrowband of SRS signal quality maximum according to the SRS signal quality of at least one MTC UE in N arrowband.Namely for each MTC UE, eNB determines that as far as possible the best arrowband of channel quality allows this MTC UE communicate.
So-called communication just refers to that MTC UE monitors paging, dispatches or carry out transfer of data in corresponding arrowband, and eNB also only carries out paging, dispatches or carry out transfer of data in corresponding arrowband to MTC UE.
76, MTC UE carries out uplink communication according to the indication of eNB in the arrowband.
Upward send the PUCCH data of oneself at the PUCCH of corresponding arrowband (Physical Uplink Control CHannel, physical uplink control channel) according to the indication of eNB such as MTC UE.
In above-mentioned 74, eNB can safeguard one-period, and regular demand for services according to the MTC UE in the residential quarter, and the SRS signal quality of each MTC UE feedback are upgraded narrow band information, and broadcasting; And within the cycle, eNB also can dispatch MTC UE and communicate the arrowband conversion in each selected arrowband.
In above-mentioned 71, if during new MTC UE access network, new MTC UE at first obtains the position, arrowband that N conduct of eNB broadcasting is used for supporting MTC communication, afterwards, new MTC UE selects an arrowband to initiate up access from N arrowband at random, such as preferred center frequency band arrowband.Then, new MTC UE carries out the transmission of SRS frequency hopping.
Optionally, when MTC UE has communication requirement, jump back to the arrowband of its communication, communicate; It is complete to communicate by letter, and MTC UE can revert to SRS frequency hopping position before the communication to be continued the SRS frequency hopping and send, MTC UE also can from signal post the arrowband restart the SRS frequency hopping and send.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or store-memory body (Random Access Memory, RAM) etc. at random.
Claims (22)
1. a method of supporting narrow band communication in broadband system is characterized in that, comprising:
According to the demand for services of at least one machine type communication subscriber equipment MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication;
According to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband, described M 〉=1 〉=N 〉=1.
2. the method for supporting narrow band communication in broadband system according to claim 1 is characterized in that described method also comprises:
When described at least one MTC UE is one, obtain described MTC UE channel quality on each initial arrowband in M initial arrowband;
As described at least one MTC UE when being a plurality of, obtain the channel quality on each initial arrowband in M initial arrowband of each MTC UE among a plurality of MTC UE, and obtain described a plurality of MTC UE at the weighted average of the channel quality on described each initial arrowband as the channel quality of a plurality of MTC UE on M initial arrowband.
3. the method for supporting narrow band communication in broadband system according to claim 2 is characterized in that, obtains the channel quality of each MTC UE on each initial arrowband and comprises:
For each initial arrowband, receive each MTC UE at the detection reference signal SRS that initial arrowband sends, obtain the signal quality of described SRS;
Perhaps, for each initial arrowband, receive the demodulated reference signal DMRS that each MTC UE sends with data on initial arrowband, obtain the signal quality of described DMRS;
Perhaps, for each initial arrowband, receive the channel quality indicator CQI on each initial arrowband of each MTC UE feedback, obtain the signal quality of the downlink reference signal of CQI indication;
Perhaps, for each initial arrowband, receive the measurement result on each initial arrowband of each MTC UE feedback, obtain the signal quality of the downlink reference signal of measurement result indication.
4. the method for supporting narrow band communication in broadband system according to claim 3 is characterized in that, the transmission bandwidth of described SRS is determined by following mode:
Perhaps, the transmission bandwidth of described DMRS is the bandwidth B of arrowband
Narrow
5. the method for supporting narrow band communication in broadband system according to claim 1 is characterized in that, according to the channel quality of described at least one MTC UE on M initial arrowband, determines a described N arrowband from M initial arrowband, comprising:
According to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine described N the highest arrowband of channel quality.
6. the method for supporting narrow band communication in broadband system according to claim 5 is characterized in that, determines that from M initial arrowband described method also comprises after the described N arrowband:
According to the channel quality of described at least one MTC UE in a described N arrowband, determine that a highest arrowband of channel quality is used for supporting described at least one MTC UE communication, and indicate described at least one MTC UE to communicate by letter in a highest arrowband of described channel quality;
Perhaps, give described at least one MTC UE with the information broadcasting of a described N arrowband, the information of a described N arrowband is used for selecting to be used for the arrowband of communication by described at least one MTC UE.
7. the method for supporting narrow band communication in broadband system according to claim 6 is characterized in that, comprises to described at least one MTC UE the information broadcasting of a described N arrowband:
Give described MTC UE with M flag bit information broadcasting, wherein, corresponding M initial arrowband of M flag bit difference, settled approximately flag bit is to represent that the corresponding initial arrowband of described flag bit was in N the arrowband at 1 o'clock, perhaps settled approximately flag bit be represented in 0 o'clock described flag bit correspondence initially the arrowband be in N the arrowband one.
8. the method for supporting narrow band communication in broadband system according to claim 1 is characterized in that, described M initial arrowband determined by following mode:
According to the bandwidth of described arrowband, will be divided into for the broadband of communication M initial arrowband.
9. a device of supporting narrow band communication in broadband system is characterized in that, comprising:
The first determining unit is used for the demand for services according at least one machine type communication subscriber equipment MTC UE, is identified for supporting the quantity N of the arrowband of described at least one MTC UE communication;
The second determining unit is used for the channel quality on M initial arrowband according to described at least one MTC UE, determines a described N arrowband, described M 〉=1 〉=N 〉=1 from M initial arrowband.
10. the device of supporting narrow band communication in broadband system according to claim 9 is characterized in that described device also comprises:
Acquiring unit is used for when described at least one MTC UE is one, obtains described MTC UE channel quality on each initial arrowband in M initial arrowband; As described at least one MTC UE when being a plurality of, obtain the channel quality on each initial arrowband in M initial arrowband of each MTC UE among a plurality of MTC UE, and obtain described a plurality of MTC UE at the weighted average of the channel quality on described each initial arrowband as the channel quality of a plurality of MTC UE on M initial arrowband;
Described acquiring unit is used for:
For each initial arrowband, receive each MTC UE at the detection reference signal SRS that initial arrowband sends, obtain the signal quality of described SRS;
Perhaps, for each initial arrowband, receive each MTC UE at the demodulated reference signal DMRS that initial arrowband sends, obtain the signal quality of described DMRS;
Perhaps, for each initial arrowband, receive the channel quality indicator CQI on each initial arrowband of each MTC UE feedback, obtain the signal quality of the downlink reference signal of CQI indication;
Perhaps, for each initial arrowband, receive the measurement result on each initial arrowband of each MTC UE feedback, obtain the signal quality of the downlink reference signal of measurement result indication.
11. the device of supporting narrow band communication in broadband system according to claim 9 is characterized in that described the second determining unit is used for:
According to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine described N the highest arrowband of channel quality.
12. the device of supporting narrow band communication in broadband system according to claim 11 is characterized in that described device also comprises:
The 3rd determining unit, be used for according to the channel quality of described at least one MTC UE in a described N arrowband, determine that a highest arrowband of channel quality is used for supporting described at least one MTC UE communication, and indicate described at least one MTC UE to communicate by letter in a highest arrowband of described channel quality;
Perhaps, radio unit is for giving described at least one MTC UE with the information broadcasting of a described N arrowband, so that described at least one MTC UE is used for selection for the arrowband of communicating by letter.
13. a method of supporting narrow band communication in broadband system is characterized in that, comprising:
Receive the broadcast that the base station sends, described broadcast is carried the information of N arrowband, the information of a described N arrowband is obtained by following mode: described base station is according to the demand for services of at least one machine type communication subscriber equipment MTC UE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband;
From M initial arrowband, determine a described N arrowband, described M 〉=1 〉=N 〉=1 according to described broadcast.
14. the method for supporting narrow band communication in broadband system according to claim 13 is characterized in that, determines that according to described broadcast after the described N arrowband, described method also comprises from M initial arrowband:
Receive the indication information that described base station sends;
Determine the arrowband that communicates according to described indication information.
15. the method for supporting narrow band communication in broadband system according to claim 14 is characterized in that, receives before the broadcast of base station transmission, described method also comprises:
Send detection reference signal SRS to described base station in each initial arrowband;
Perhaps, on each initial arrowband, send demodulated reference signal DMRS to described base station with data;
Perhaps, feedback channel quality designator CQI gives described base station, the signal quality of described CQI indicating downlink reference signal on each initial arrowband;
Perhaps, give described base station, the signal quality of described measurement result indicating downlink reference signal in each initial arrowband feedback measurement result.
16. the method for supporting narrow band communication in broadband system according to claim 15 is characterized in that, the transmission bandwidth of described SRS is determined by following mode:
Perhaps, the transmission bandwidth of described DMRS is the bandwidth of the data transmission of MTC UE.
17. the method for supporting narrow band communication in broadband system according to claim 16 is characterized in that, described M initial arrowband determined by following mode:
According to the bandwidth of described arrowband, will be divided into for the broadband of communication M initial arrowband.
18. the method for supporting narrow band communication in broadband system according to claim 13 is characterized in that described method also comprises:
During new MTC UE access network, determine that from a described N arrowband arrowband initiates access.
19. a device of supporting narrow band communication in broadband system is characterized in that, comprising:
The first receiving element, be used for receiving the broadcast that the base station sends, described broadcast is carried the information of N arrowband, the information of a described N arrowband is obtained by following mode: described base station is according to the demand for services of at least one machine type communication subscriber equipment MTCUE, be identified for supporting the quantity N of the arrowband of described at least one MTC UE communication, according to the channel quality of described at least one MTC UE on M initial arrowband, from M initial arrowband, determine a described N arrowband;
Determining unit is used for determining a described N arrowband, described M 〉=1 〉=N 〉=1 according to described broadcast from M initial arrowband.
20. the device of supporting narrow band communication in broadband system according to claim 19 is characterized in that described device also comprises:
The first receiving element is used for receiving the indication information that described base station sends, and determines the arrowband that communicates according to described indication information.
21. the device of supporting narrow band communication in broadband system according to claim 20 is characterized in that described device also comprises:
Transmitting element, be used for sending detection reference signal SRS in each initial arrowband, perhaps, on each initial arrowband, send demodulated reference signal DMRS with data, perhaps, feedback channel quality designator CQI gives described base station, the signal quality of described CQI indicating downlink reference signal on each initial arrowband; Perhaps, give described base station, the signal quality of described measurement result indicating downlink reference signal in each initial arrowband feedback measurement result.
22. the device of supporting narrow band communication in broadband system according to claim 19 is characterized in that described device also comprises:
Access unit when being used for new MTC UE access network, is determined an arrowband initiation access from a described N arrowband.
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| CN201210124113.3A CN103379552B (en) | 2012-04-24 | 2012-04-24 | A kind of method and device supporting narrow band communication in broadband system |
| PCT/CN2013/070173 WO2013159577A1 (en) | 2012-04-24 | 2013-01-07 | Method and device for supporting narrowband communication in broadband system |
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| CN201210124113.3A CN103379552B (en) | 2012-04-24 | 2012-04-24 | A kind of method and device supporting narrow band communication in broadband system |
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| CN106664188A (en) * | 2014-08-15 | 2017-05-10 | 交互数字专利控股公司 | Method and apparatus for supporting uplink transmission and mbms for a wtru with reduced bandwidth |
| CN106664707A (en) * | 2014-08-26 | 2017-05-10 | Lg 电子株式会社 | Method and device for transmitting data of device to device terminal in wireless communication system |
| CN106658717A (en) * | 2015-10-30 | 2017-05-10 | 上海朗帛通信技术有限公司 | Method and device in narrowband communication |
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| WO2018059271A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Information sending and receiving method and device |
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Also Published As
| Publication number | Publication date |
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| WO2013159577A1 (en) | 2013-10-31 |
| CN103379552B (en) | 2016-10-05 |
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