CN107147475A - A kind of method of adjustment of modulation coding mode and base station - Google Patents
A kind of method of adjustment of modulation coding mode and base station Download PDFInfo
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- CN107147475A CN107147475A CN201710510407.2A CN201710510407A CN107147475A CN 107147475 A CN107147475 A CN 107147475A CN 201710510407 A CN201710510407 A CN 201710510407A CN 107147475 A CN107147475 A CN 107147475A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The invention discloses a kind of method of adjustment of modulation coding mode and base station, the beneficial effect for saving transfer resource is reached.The method of adjustment of modulation coding mode therein includes：Bandwidth is distributed in base station according to the default modulation coding mode MCS used exponent number at least one group-calling service；Wherein, the terminal under the covering of base station is divided into multiple groups, wherein every group includes multiple terminals, the group-calling service is the business that any one terminal is called simultaneously with the other-end in any one group；If the band of at least one group-calling service distribution is wider than the first pre-set bandwidths, then the base station increases the MCS used at least one described group-calling service exponent number.
Description
Technical field
The present invention relates to communication technical field, the method for adjustment of more particularly to a kind of modulation coding mode and base station.
Background technology
In some industries, synchronization a, user needs to know the working condition of other users, so as to dispatch other
The work of user.For example, in property management security industry, supervisor needs to know the working condition of its staff led, so that
Dispatch the work of these staff.Therefore, current system can provide group-calling service.Group-calling service is that occur by multiple
Business in the group of terminal composition, in group-calling service, can only there is a terminal for actively initiating calling, remaining terminal is all
Called party.For example, group-calling service can be the call occurred in the group being made up of multiple terminals, in communication process,
One terminal can actively be initiated all terminals of other in group to call, should when initiating the user of terminal of calling speech
The user of other-end in group can listen to simultaneously.So, some user in a group is it is known that in the group
The situation of other users, is easy to dispatch the work of other users.
Generally, terminal is divided into multiple groups by the business that can be carried out in advance according to terminal.For example, terminal A, terminal B,
Terminal C, terminal D, terminal E and terminal F, the business that terminal A, terminal B and terminal C are carried out is property management security business, then can be with
Terminal A, terminal B and terminal C are divided into a group.The business carried out between terminal D, terminal E and terminal F is railway logistics industry
Business, then terminal D, terminal E and terminal F can be divided into a group.After end packet, the group where terminal can be asked
Access base station, base station can know the numbering of group where terminal in advance, so as to according to the numbering of different groups to different
Group initiates calling.
When any one group under the covering of base station need to carry out group-calling service, base station will distribute bandwidth for the group-calling service,
To transmit group-calling service data.In Long Term Evolution (Long Term Evolution, LTE) system, the channel that system is provided can
Think that all terminals in system are shared.Base station can use more modulation coded system when transmitting group-calling service data
(Modulation and Coding Scheme, MCS), such as QPSK (Quadrature Phase Shift
Keyin, QPSK) mode, 16 quadrature amplitude modulations (Quadrature Amplitude Modulation, 16QAM) mode or
64QAM modes etc..The different index value of different MCS correspondences, base station is when selecting MCS, and have selected index value is exactly that have selected
Corresponding MCS.Such as MCS index value is 1, then corresponding MCS is QPSK modes, and MCS index value is 3, then corresponding MCS
For 16QAM modes.Wherein, MCS index value is also referred to as MCS exponent number.
Under normal circumstances, the channel quality that base station is fed back according to terminal indicate (Channel Quality indicator,
CQI) come determine how configuration MCS exponent number.For connecting (Radio Resource in radio resource control
Control Connect, RRC Connect) terminal for, can to base station send CQI so that base station can according in
RRC Connect terminal feedback CQI come determine configuration MCS exponent number.And in LTE system, most of ends in group
End is all in idle (Idle) state, and the terminal in Idle states can not be by CQI feedback to base station, so base station can be in advance
The all of base station covering assemble the exponent number for putting MCS.And MCS exponent number is bigger, the transmission rate of data is bigger, i.e., with for the moment
Between in section, it is necessary to which the data of transmission are more, and in limited bandwidth, substantial amounts of data easily cause blocking.Therefore, in order to
Ensure the reliability of data transfer, base station for it is all assemble put initial MCS when, smaller exponent number can be pre-configured with for all groups
MCS.
But MCS exponent number is smaller, base station according to the MCS be each group to be carried out when exhaling traffic assignments bandwidth, divide
The data volume that each resource block (Resource Block, RB) matched somebody with somebody can be carried is fewer.So base station is using less
Be in the case of MCS exponent number each group to be carried out when exhaling traffic assignments bandwidth, it is necessary to distribute more RB, result in biography
The waste of defeated resource.
The content of the invention
The embodiment of the present invention provides method of adjustment and the base station of a kind of modulation coding mode, reaches and saves having for transfer resource
Beneficial effect.
In a first aspect, one embodiment of the invention provide a kind of method of adjustment of modulation coding mode, the method for adjustment,
Including：
Bandwidth is distributed in base station according to the default modulation coding mode MCS used exponent number at least one group-calling service；Its
In, the terminal under the covering of base station is divided into multiple groups, wherein every group includes multiple terminals, the group-calling service is any one end
The business that end is called simultaneously with the other-end in any one group；
If the band of at least one group-calling service distribution is wider than the first pre-set bandwidths, then the base station increase is to institute
State the MCS of at least one group-calling service use exponent number.
Optionally, the exponent number for the MCS that the base station increase is used at least one described group-calling service, including：
The base station chosen from least one described group-calling service where group down channel quality indicate CQI value
More than M group-calling service of first threshold；Wherein, the CQI of group value is that the one group of multiple terminals included are reported
CQI value average value, M is positive integer；
The exponent number for the M MCS that the M group-calling service is respectively adopted for the base station increase.
Optionally, in addition to：
If the bandwidth of at least one group-calling service distribution is less than or equal to first pre-set bandwidths, then the base
Station is judged as whether the bandwidth of at least one group-calling service distribution is less than the second pre-set bandwidths；Wherein, described second preset
Bandwidth is less than first pre-set bandwidths；
If the bandwidth of at least one group-calling service distribution is less than second pre-set bandwidths, then the base station reduces
The MCS used at least one described group-calling service exponent number.
Optionally, the base station reduces the MCS used at least one described group-calling service exponent number, including：
The base station chosen from least one described group-calling service where group down channel quality indicate CQI value
Less than N number of group-calling service of Second Threshold；Wherein, the CQI of group value is that the one group of multiple terminals included are reported
CQI value average value, N is positive integer；
The base station reduces the exponent number for N number of MCS that N number of group-calling service is respectively adopted.
Optionally, the average value of the value for the CQI that the one group of multiple terminals included are reported is：
The CQI's that the terminal for connecting RRC CONNECT states in radio resource control in one group is reported
The average value of the value for the CQI that value and terminal in radio resource control free time RRC IDLE states are reported.
Second aspect, one embodiment of the invention provides a kind of base station, and the base station includes：
Distribute module, for the exponent number according to the default modulation coding mode MCS used at least one group-calling service point
With bandwidth；Wherein, the terminal under the covering of base station is divided into multiple groups, wherein every group includes multiple terminals, the group-calling service is
The business that any one terminal is called simultaneously with the other-end in any one group；
Adjusting module, if being wider than the first pre-set bandwidths for the band that at least one described group-calling service is distributed, then institute
State the exponent number for the MCS that base station increase is used at least one described group-calling service.
Optionally, the exponent number for the MCS that the adjusting module increase is used at least one described group-calling service, including：
The adjusting module chosen from least one described group-calling service where group down channel quality indicate CQI
Value be more than first threshold M group-calling service；Wherein, the CQI of group value is the one group of multiple terminals included
The average value of the CQI reported value, M is positive integer；
The exponent number for the M MCS that the M group-calling service is respectively adopted for the adjusting module increase.
Optionally, the adjusting module is additionally operable to：
If the bandwidth of at least one group-calling service distribution is less than or equal to first pre-set bandwidths, then described to adjust
Mould preparation block is judged as whether the bandwidth of at least one group-calling service distribution is less than the second pre-set bandwidths；Wherein, described second
Pre-set bandwidths are less than first pre-set bandwidths；
If the bandwidth of at least one group-calling service distribution is less than second pre-set bandwidths, then the adjusting module
Reduce the MCS used at least one described group-calling service exponent number.
Optionally, the adjusting module reduces the MCS used at least one described group-calling service exponent number, including：
The adjusting module chosen from least one described group-calling service where group down channel quality indicate CQI
Value be less than Second Threshold N number of group-calling service；Wherein, the CQI of group value is the one group of multiple terminals included
The average value of the CQI reported value, N is positive integer；
The adjusting module reduces the exponent number for N number of MCS that N number of group-calling service is respectively adopted.
Optionally, the average value of the value for the CQI that the one group of multiple terminals included are reported is：
The CQI's that the terminal for connecting RRC CONNECT states in radio resource control in one group is reported
The average value of the value for the CQI that value and terminal in radio resource control free time RRC IDLE states are reported.
In the embodiment of the present invention, base station is according to the bandwidth that default MCS exponent number is that at least one group-calling service is distributed
Size adjusts MCS exponent number, if the band of at least one group-calling service distribution is wider than the first pre-set bandwidths, then base station is
The bandwidth of at least one group-calling service distribution is just larger, may be close to the maximum bandwidth that base station is supported, now base station can increase
Big MCS exponent number, so as to be that at least one group-calling service redistributes bandwidth according to the exponent number of the MCS after increase, so divides
The data volume that the RB matched somebody with somebody can be carried is more, and the number for the RB that need to be distributed is just less, so as to save transfer resource.
Brief description of the drawings
Fig. 1 is a kind of Organization Chart of trunked communication system provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the method for adjustment of modulation coding mode provided in an embodiment of the present invention；
Fig. 3 causes the limited schematic diagram of power system capacity for the method for adjustment of modulation coding mode in the prior art；
Fig. 4 is a kind of limited schematic diagram of solution power system capacity provided in an embodiment of the present invention；
Fig. 5 is a kind of limited schematic diagram of solution power system capacity provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of base station provided in an embodiment of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
First, a kind of application scenarios of the embodiment of the present invention are introduced.
Fig. 1 is referred to, Fig. 1 show a kind of Organization Chart of communication system.Fig. 1 includes base station 101 and multiple terminals 102.
Base station 101 can be evolved base station (Evolved Node B, eNB or e-NodeB), and terminal 102 is whole used in user
End, such as intercom.Multiple terminals 102 can be divided into many by people according to the business carried out between multiple terminals 102 in advance
Individual group, each group can include multiple terminals 102.Multiple terminals 102 are divided into after multiple groups, the group where terminal 102
Can be with request, base station can know the numbering of group where terminal 102 in advance, so as to the volume according to different groups
Number different group is initiated to call.For example, thering is the business carried out between 3 terminals 102 to be property management security business, by this 3 ends
End is divided into a group, and it is railway logistics business to have the business carried out between 4 terminals 102 again, and this 4 terminals are divided into one
Individual group.Fig. 1 respectively organizes 1, group 2 and group 3 so that 102 points of 10 terminals under base station 101 is covered are 3 groups as an example.
Any one terminal 102 actively can initiate its in calling, the group to the other-end 102 in any one group
His terminal 102 is all called party.Wherein, actively initiating any one terminal 102 of calling and called terminal 102 can be
Same group, can not also be at same group.Terminals 102 of the Fig. 1 actively to initiate any one terminal 102 of calling and be called
Exemplified by same group.When the terminal 102 for initiating calling by active in user is talked, the use other-end 102 in the group
User can listen to simultaneously.When carrying out group-calling service, the terminal 102 for initiating calling as active sends the data to base station
101, the data of reception are sent to the other-end 102 for participating in the group-calling service by base station 101.
The problem of resource waste existed based on group-calling service in the prior art, the embodiment of the present invention provides a kind of modulating-coding
The method of adjustment of mode and base station, in base station 101 according to the bandwidth that default MCS exponent number is that at least one group-calling service is distributed
Afterwards, MCS exponent number can be adjusted according to the size for the bandwidth distributed at least one group-calling service, if at least one group is exhaled
The broader bandwidth of traffic assignments, the maximum bandwidth for example supported close to base station 101, now base station 101 can increase MCS rank
Number.Base station 101 is that at least one group-calling service redistributes bandwidth according to the exponent number of the MCS after increase, distributed a RB
The data volume that can be carried is more, and the number for the RB that need to be distributed is just less, so as to save transfer resource, improves the appearance of system
Amount.
Technical scheme provided in an embodiment of the present invention is introduced below in conjunction with Figure of description.
Communication system architecture figure according to Fig. 1, a kind of tune of modulation coding mode is provided to one embodiment of the invention
Adjusting method is described in detail, and the embodiment is by taking Fig. 1 as an example, not limit the system architecture that only can be used in shown in Fig. 1.Should
Method of adjustment can be performed by base station 101, refer to Fig. 2, and the flow of the method for adjustment is described as follows：
S201：Bandwidth is distributed in base station 101 according to the default MCS used exponent number at least one group-calling service, wherein,
Terminal 102 under base station 101 is covered is divided into multiple groups, wherein every group includes multiple terminals 102, group-calling service is any one
The business that terminal 102 is called simultaneously with the other-end 102 in any one group；
S202：If the band of at least one group-calling service distribution is wider than the first pre-set bandwidths, then base station 101 increases to extremely
The exponent number for the MCS that a few group-calling service is used.
Base station 101 covers multiple groups, any one group under being covered for base station 101, when having group-calling service, base station
101 will distribute bandwidth for the group-calling service, if without group-calling service, base station 101 need not distribute bandwidth for the group-calling service.
When a group has group-calling service, the group can send request message to base station 101, and the request message is used to ask to base station 101
Bandwidth is distributed for the group group-calling service to be carried out, base station 101 receives the request message that the group is sent, can be exhaled for corresponding group
Traffic assignments bandwidth.Base station 101 be according to the MCS used exponent number for send request message each component match somebody with somebody bandwidth, also
It is to distribute bandwidth to send each group of group-calling service to be carried out of request message.Generally, base station 101 has been pre-configured with MCS
Exponent number, so base station 101 directly can send each group of request message to be entered according to the MCS being pre-configured with exponent number
Capable group-calling service distribution bandwidth.
Base station 101 is that a group-calling service distributes bandwidth according to the exponent number for the MCS being pre-configured with, can be by distributing RB's
Mode is realized, for example, MCS exponent number is 6, a RB a width of 180kHz of band, what the group-calling service that a group is carried out needed
Bandwidth is 900kHz, and base station 101 is accomplished by as 5 RB of this group of traffic assignments.Certainly, base station 101 can also be provided by distributing
The mode of source element (ResourceElement, RE) is that a component matches somebody with somebody bandwidth, or passes through allocation schedule block
The mode of (Scheduling Block, SB) is that a component matches somebody with somebody bandwidth, and which kind of mode is the embodiment of the present invention pass through to base station 101
It is not restricted with bandwidth for a component.
In order to ensure the reliability of data transfer, generally, the exponent number for the MCS that base station 101 is pre-configured with is smaller.And base station
101 use the MCS of smaller exponent number for group-calling service distribute bandwidth when, the data volume that the RB distributed can be carried is got over
It is few, so base station 101 is when using the MCS of smaller exponent number to distribute bandwidth for group-calling service, it is necessary to distribute more RB, cause
The waste of system resource.Now, may be due to the available resources of base station 101 if new terminal 102 will add some group
Deficiency, causes new terminal 102 can not add some group.That is the limited amount for the terminal 102 that base station 101 can be added, then
The quantity for the corresponding terminal 102 of group-calling service that base station 101 is supported is just few, and the capacity of system is also just few.
So in the embodiment of the present invention, base station 101 is at least one group-calling service point according to the MCS of default smaller exponent number
After bandwidth, MCS exponent number can also be suitably adjusted.For example, the suitably increase MCS exponent number of base station 101, with lifting system of trying one's best
Capacity, or, base station suitably reduces MCS exponent number, to improve the reliability of data transfer.
So as to save transfer resource, contribute to the capacity of lifting system.
In the embodiment of the present invention, band is distributed in base station 101 according to the MCS of the default exponent number used at least one group-calling service
After width, it may determine that whether the bandwidth distributed at least one group-calling service is more than the first pre-set bandwidths first, if base station 101 is
The band of at least one group-calling service distribution is wider than the first pre-set bandwidths, then it is considered that base station 101, which is at least one group, exhales industry
The maximum bandwidth that the bandwidth of business distribution is supported close to base station 101.Wherein, the first pre-set bandwidths can be propped up according to base station 101
The maximum bandwidth held is set, for example, the first pre-set bandwidths can be the 90% of the maximum bandwidth that base station 101 is supported, or
80% etc..
If the maximum bandwidth that base station 101 is supported for the bandwidth that at least one group-calling service is distributed close to base station 101, system
Available resources it is less.So now, base station 101 can increase the MCS used at least one group-calling service exponent number, so that
Subsequent base stations 101 are that at least one group-calling service distributes bandwidth, the RB institute distributed further according to the exponent number of the MCS after increase
The data volume that can be carried is more, and the RB of distribution number is just less, so as to save transfer resource, contributes to the appearance of lifting system
Amount.
But MCS exponent number is bigger, the transmission rate of data is bigger, i.e., it is necessary to the data of transmission in the same period
It is more, and in limited bandwidth, substantial amounts of data easily cause blocking.That is, exponent number larger MCS, Zhi Nengying
For the preferable terminal 102 of channel quality.Actually participate in that the channel quality of the terminal 102 of each group-calling service has is preferable,
What is had is poor.If base station 101 increases the MCS used to whole group-calling services exponent number, then poor for channel quality
Group for, it is possible to the terminal 102 in the group does not just receive the data that base station 101 is transmitted at all, i.e., can not ensure number
According to the reliability of transmission.Therefore, base station 101 increase at least one group-calling service use MCS exponent number when, can to
The preferable group-calling service of channel quality of group where being chosen in a few group-calling service, then increase to selected group-calling service
The MCS of use exponent number.So, for the poor group of channel quality, do not increase MCS exponent number, data can be kept
The reliability of transmission.For preferable group of channel quality, increase MCS exponent number, ensure the reliability of data transfer
Simultaneously, additionally it is possible to reach saving transfer resource, the effect of the capacity of system is improved.
Base station 101 chosen from least one group-calling service where group channel quality preferable group-calling service when, can
With the order of the value of the CQI according to each group-calling service correspondence group from big to small, group-calling service is ranked up, before then selecting
M group-calling service, the CQI of selected M group-calling service correspondence group value is both greater than first threshold.Wherein, M is just whole
Number, the average value of the value for the CQI that the CQI of group value reports for multiple terminals 102 that a group includes, first threshold can be with
It is the value pre-set, if the CQI of group value is more than first threshold, it is considered that the channel quality of the group is preferable.
Because the CQI of group value is change, for example, previous moment, the CQI of some group value is larger, but under
One moment, the CQI of group value is smaller.If base station 101 is once by the exponent number for the M MCS that M group-calling service is respectively adopted
Increase is a lot, then be that can not ensure the reliability of data transfer for the group of smaller CQI value next time.Therefore, base
During the exponent number for the MCS that M group-calling service is respectively adopted for 101 increases of standing, the amplitude increased is smaller, for example, increase MCS rank
Several amplitudes can be 1, be unlikely to occur too big change, it is impossible to ensure the reliability of data transfer.Base station 101 increases MCS
Exponent number after, further according to the MCS after increase exponent number at least one group-calling service distribute bandwidth, if at least one group exhales industry
Be engaged in distribution bandwidth still above the first pre-set bandwidths, then base station 101 can continue increase to the channel quality of the group at place compared with
The exponent number for the MCS that good group-calling service is used, still can increase 1 by MCS exponent number, to ensure the reliable of data transfer as far as possible
Property, while the capacity of lifting system.
In the embodiment of the present invention, if the bandwidth that base station 101, which is at least one group-calling service, to be distributed is less than or equal to first
Pre-set bandwidths, can also determine whether whether the bandwidth distributed at least one group-calling service is less than the second pre-set bandwidths.Its
In, the second pre-set bandwidths are less than the first pre-set bandwidths, for example, the second pre-set bandwidths can be the maximum belt that base station 101 is supported
Wide 50%, or 40% etc..If the bandwidth that base station 101, which is at least one group-calling service, to be distributed is less than the second pre-set bandwidths,
So now it is considered that system also has more available resources.In this case, base station 101 can suitably reduce at least
The exponent number for the MCS that one group-calling service is used, on the premise of it also there are more available resources in system, improves data and passes as far as possible
Defeated reliability.
Base station 101 uses the MCS of smaller exponent number to distribute bandwidth, the number that the RB distributed can be carried for group-calling service
Fewer according to measuring, it is necessary to which the data of transmission are fewer in the same period, the successful probability of data transfer is bigger, therefore, compared with
The MCS of small exponent number is more suitably applied to the poor terminal 102 of channel quality.But for the preferable terminal of channel quality 102
Say, it is not necessary to reduce MCS exponent number, otherwise the speed of data transfer reduces, the efficiency of system is also reduced.
Participate in that the channel quality of the terminal 102 of each group-calling service has is preferable, and what is had is poor, if base station 101 reduces
The MCS used to whole group-calling services exponent number, may result in message transmission rate reduction, so that the efficiency of system also drops
It is low.Accordingly, it is considered to which to there is preferable group of channel quality, base station 101 is reducing to the MCS's of at least one group-calling service use
During exponent number, the poor group-calling service of channel quality of the group where first being chosen from least one group-calling service, then reduce
The MCS used to the group-calling service of selection exponent number.So, for the poor group of channel quality, MCS exponent number is reduced,
The reliability of data transfer can be improved.
Base station 101 chosen from least one group-calling service where group channel quality poor group-calling service when, can
With the order of the value of the CQI according to each group-calling service correspondence group from big to small, group-calling service is ranked up, before then selecting
N number of group-calling service, the CQI of selected N number of group-calling service correspondence group value is both less than Second Threshold.Wherein, N is positive integer,
The CQI of one group value is the average value of the value for the CQI that multiple terminals 102 that a group includes are reported, and Second Threshold can be
The value pre-set, if the CQI of group value is less than Second Threshold, it is considered that the channel quality of the group is poor.
Because the value of the CQI of group where at least one group-calling service is change, for example, previous moment, the CQI of some group
Value it is higher, but subsequent time, the CQI of group value is smaller.If base station 101 will once be used to N number of group-calling service
MCS exponent number reduces a lot, then for the group of the higher CQI of subsequent time value, also reduce the speed of data transfer,
So as to reduce the efficiency that system transmits data, this is not necessarily to.Therefore, base station 101 reduces uses to N number of group-calling service
MCS exponent number when, the amplitude reduced is smaller, for example, reduce MCS exponent number amplitude can be 1, be unlikely to occur it is too big
Change, avoid as far as possible reduction system transmit data efficiency.Base station 101 reduces after MCS exponent number, after reduction
MCS exponent number distributes bandwidth at least one group-calling service, if the bandwidth of at least one group-calling service distribution is still less than the
Two pre-set bandwidths, then base station 101 can continue to reduce the MCS's that the group-calling service poor to the channel quality of the group at place is used
Exponent number, still can reduce 1 by MCS exponent number, so that while power system capacity is larger, the reliable of data transfer is improved as far as possible
Property.
In the embodiment of the present invention, the average value of the value for the CQI that multiple terminals 102 that a group includes are reported can be specifically
In radio resource control connection (Radio Resource Control Connect, RRC CONNECT) in one group
The CQI value that reports of terminal 102 and in radio resource control it is idle (Radio Resource Control Idle,
RRC IDLE) state the average value of CQI value that reports of terminal 102.
In LTE system, all terminals share down channel, generally, the multiple terminals included in a group
In 102, some terminals 102 are in RRC CONNECT states, and some terminals 102 are in RRC IDLE states, and the pin of base station 101
Corresponding CQI feedback mechanism is formulated to the terminal 102 in RRC CONNECT states, base station 101 is according in RRC
The value for the CQI that the terminal 102 of CONNECT states is fed back is come the bandwidth of group where distributing group-calling service.But if in RRC
The channel quality of the terminal 102 of IDLE state very well, according only to the terminal 102 in RRC CONNECT states feed back by base station 101
CQI value distribute the bandwidth of group where group-calling service, it is clear that the degree of accuracy is smaller.
Therefore, in the embodiment of the present invention, the average value of the value for the CQI that multiple terminals 102 that a group includes are reported both was wrapped
The value of the CQI that the terminal 102 in RRC CONNECT states is reported in a group is included, is included again in RRC IDLE states
The average value of the value for the CQI that terminal 102 is reported, i.e., channel quality simultaneously in view of all terminals 102 in a group, according to
The CQI of all terminals 102 value is distributed bandwidth at least one group-calling service, to improve the degree of accuracy of distribution bandwidth as far as possible.
In possible embodiment, the mode of the value for the CQI that the terminal 102 in RRC IDLE states is reported can pass through
In the following manner is realized.Base station 101 can send measurement instruction to the terminal 102 in RRC IDLE states, and the measurement instruction can
To ask the terminal 102 in RRC IDLE states to measure the quality of down channel.Terminal 102 in RRC IDLE states is surveyed
After amount, CQI value is sent to base station 101.In order to mitigate the burden of base station 101, if the terminal 102 in RRC IDLE states
The CQI of measurement value is more than the 3rd threshold value, and the channel quality of group preferably, is then in where the 3rd threshold value is used for instruction terminal 102
The terminal 102 of RRC IDLE states does not send the CQI of measurement value to base station 101, and now, base station 101 can be given tacit consent in RRC
The CQI of the terminal 102 of IDLE state value is the 3rd threshold value.
In order to more fully understand, introduce base station 101 so that the exponent number for the MCS that base station 101 is pre-set is 6 as an example below and adjust
The method of MCS exponent number.
Base station 101 is configured with initial MCS exponent number, and such as MCS exponent number is 6.Base station 101 is according to the MCS that the exponent number is 6
Bandwidth is distributed for the group-calling service.Base station 101 can be according to current MCS value, and need to currently transmit the one of the group-calling service
Individual RB size, it is determined that the quantity for the RB that need to be distributed for the group-calling service.Specifically, base station 101 can be by searching 3GPP TS
Table 7.1.7.2.1-1 in 36.213, are defined as the group-calling service RB to be distributed quantity.For example, current need transmission
One RB of group-calling service size is 1128bit, and MCS exponent number is 6, and base station 101 at least needs to distribute for the group-calling service
11 RB resources.
Fig. 3 is referred to, the method for adjustment that Fig. 3 is MCS in the prior art causes the limited schematic diagram of power system capacity.Such as Fig. 3
Shown, the subframe numbers that base station 101 has been n in current System Frame Number (System Frame Number, SFN) are that scheduled at 0
4 groups of group-calling services：Group 0~groups 3, with increasing for group-calling service, for example, organize 40 and are also set up with base station 101 and asked, is also allocated
It is to be scheduled at 0 in subframe numbers, according to art methods, if group 0~groups 3, group 40 correspond to less MCS ranks
Number, such as 6, the RB sums needed for group 0~groups 3, group 40 can easily exceed the corresponding maximum of the maximum bandwidth supported base station 101
RB quantity.When this happens, part group-calling service, such as group 40 can only be put into next frame and be adjusted by prior art
Degree, such as be to be scheduled at 1 in SFN=n+1 subframe numbers.Which results in the increase of scheduling delay, especially exhaled in group
In the case that number of services increases, the scheduling delay of group-calling service will be substantially increased, and the capacity for having ultimately resulted in system is limited.
Fig. 4 is referred to, Fig. 4 is a kind of limited schematic diagram of solution power system capacity provided in an embodiment of the present invention.Such as Fig. 4 institutes
Show, base station 101 SFN=n+1 subframe numbers for detect at 0 the RB demand sums of at least one group-calling service be more than it is default
Threshold value, then the average value of the CQI reported to the 0~group 3 multiple terminals 102 included according to place group of group value is descending to be carried out
Sequence.Wherein, if the maximum bandwidth that base station 101 is supported is 20MHz, the predetermined threshold value can be 100.Base station 101 can
To choose preceding 3 group-calling services in group 0~groups 3 after sequence, for example organize 0~groups 2, and this 3 group-calling services are used
MCS exponent number adds 1, and as 7.Due to the exponent number for the MCS for organizing 0~groups 2 is increased into 7, then the data volume that a RB is carried
Become big, base station 101 is just few for the RB of group 0~group 2 distribution quantity, makes so as to reserve unnecessary RB resources to group 40
With the RB sums needed for finally ensure that group 0~groups 3, group 40 are not more than predetermined threshold value, such as 100.With the side shown in Fig. 3
Method is compared, and group 40 will not be put into next frame and be scheduled, and scheduling delay is unaffected, and group exhales capacity to be protected
Card.
Fig. 5 is referred to, Fig. 5 is a kind of limited schematic diagram of solution power system capacity provided in an embodiment of the present invention.Such as Fig. 5 institutes
Show, the subframe numbers in SFN=n of base station 101 are to organizing 0~group 3 MCS used exponent number for 15 at 0.Group-calling service group 2, group 3
Business release is carried out at SFN=n, the subframe numbers in SFN=n of base station 101 are to have carried out last time to group 2, group 3 at 0
Scheduled transmission.0 and group 1 are organized in the RB quantity requireds that SFN=n+1 subframe numbers are that detection remaining set is exhaled at 0 in base station 101
RB demand sums have been less than predetermined threshold value, for example, the maximum bandwidth that base station 101 is supported is 20MHz, then the predetermined threshold value can be with
It is 50.The average value of the CQI then reported to the 0~group 3 multiple terminals 102 included according to place group of group value is ascending to be carried out
Sequence.Base station 101 can choose preceding 2 group-calling services in group 0~groups 3 after sequence, such as selected preceding 2 groups exhale industry
It is engaged in as group 0~group 1, the exponent number for the MCS that reduction is used to this 2 group-calling services, for example, 14.If now, base station 101 is determined
RB demands sum needed for group 0~group 1 then continues to subtract 1 by MCS exponent number, until group 0 and the RB demands of group 1 still less than 50
Sum is not less than 50, for example, the exponent number that base station 101 finally configures MCS is 7.It can be seen that, when the quantity of group-calling service is reduced,
Base station 101 is by way of suitably reducing MCS exponent number, and all terminals can reliably receive base station in satisfaction group as far as possible
Data transmitted by 101.
Equipment provided in an embodiment of the present invention is introduced below in conjunction with the accompanying drawings.
Fig. 6 is referred to, based on same inventive concept, one embodiment of the invention provides a kind of base station 101, and the base station 101 can
With including distribute module 601 and adjusting module 602.Wherein, distribute module 601 can be used for the default modulating-coding according to use
Mode MCS exponent number is that at least one group-calling service distributes bandwidth, wherein, the terminal under base station 101 is covered is divided into multiple groups,
Wherein every group includes multiple terminals 102, and group-calling service is any one terminal 102 and the other-end 102 in any one group
The business called simultaneously.If the band that adjusting module 602 can be used for the distribution of at least one group-calling service is wider than first
Pre-set bandwidths, then base station 101 increase at least one group-calling service use MCS exponent number.
Optionally, adjusting module 602 increases the MCS used at least one group-calling service exponent number, including：
Adjusting module 602 chosen from least one group-calling service where group down channel quality indicate CQI value
More than M group-calling service of first threshold, wherein, the CQI of group value is that multiple terminals 102 that a group includes are reported
The average value of CQI value, M is positive integer；
Adjusting module 602 increases the exponent number for the M MCS that M group-calling service is respectively adopted.
Optionally, adjusting module 602 is additionally operable to：
If the bandwidth of at least one group-calling service distribution is less than or equal to the first pre-set bandwidths, then adjusting module 602 is sentenced
Whether the bandwidth distributed at least one group-calling service of breaking is less than the second pre-set bandwidths；Wherein, the second pre-set bandwidths are less than first
Pre-set bandwidths；
If the bandwidth of at least one group-calling service distribution is less than the second pre-set bandwidths, then adjusting module 602 reduces to extremely
The exponent number for the MCS that a few group-calling service is used.
Optionally, adjusting module 602 reduces the MCS used at least one group-calling service exponent number, including：
Adjusting module 602 chosen from least one group-calling service where group down channel quality indicate CQI value
Less than N number of group-calling service of Second Threshold, wherein, the CQI of group value is that multiple terminals 102 that a group includes are reported
The average value of CQI value, N is positive integer；
Adjusting module 602 reduces the exponent number for N number of MCS that N number of group-calling service is respectively adopted.
Optionally, the average value of the value for the CQI that multiple terminals 102 that a group includes are reported is：
The value for the CQI that the terminal 102 for connecting RRC CONNECT states in radio resource control in one group is reported
The average value of the CQI reported with the terminal 102 in radio resource control free time RRC IDLE states value.
Wherein, the base station 101 can be used for performing the method that the embodiment shown in Fig. 2 is provided.Therefore on the base station
The function that each functional module can be realized in 101, refers to the corresponding description in the embodiment shown in Fig. 2, seldom repeats.
In the embodiment of the present invention, base station is according to the bandwidth that default MCS exponent number is that at least one group-calling service is distributed
Size adjusts MCS exponent number, if the band of at least one group-calling service distribution is wider than the first pre-set bandwidths, then base station is
The bandwidth of at least one group-calling service distribution is just larger, may be close to the maximum bandwidth that base station is supported, now base station can increase
Big MCS exponent number, so as to be that at least one group-calling service redistributes bandwidth according to the exponent number of the MCS after increase, so divides
The data volume that the RB matched somebody with somebody can be carried is more, and the number for the RB that need to be distributed is just less, so as to save transfer resource, is lifted
The capacity of system.
It is apparent to those skilled in the art that, for convenience and simplicity of description, only with above-mentioned each function
The division progress of module is for example, in practical application, as needed can distribute above-mentioned functions by different function moulds
Block is completed, i.e., the internal structure of device is divided into different functional modules, to complete all or part of work(described above
Energy.The specific work process of the system, apparatus, and unit of foregoing description, may be referred to corresponding in preceding method embodiment
Journey, will not be repeated here.
, can be by it in several embodiments provided by the present invention, it should be understood that disclosed apparatus and method
Its mode is realized.For example, device embodiment described above is only schematical, for example, the module or unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in the application each embodiment can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, the technical scheme of the application is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the application each
The all or part of step of embodiment methods described.And foregoing storage medium includes：General serial bus USB
(Universal Serial Bus flash disk), mobile hard disk, ROM (Read-Only Memory, read-only storage),
RAM (Random Access Memory, random access memory), magnetic disc or CD etc. are various can be with store program codes
Medium.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of method of adjustment of modulation coding mode, including：
Bandwidth is distributed in base station according to the default modulation coding mode MCS used exponent number at least one group-calling service；Wherein, base
The lower terminal of covering of standing is divided into multiple groups, wherein every group includes multiple terminals, the group-calling service be any one terminal and
The business that other-end in any one group is called simultaneously；
If the band of described at least one group-calling service distribution is wider than the first pre-set bandwidths, then the base station increase to it is described extremely
The exponent number for the MCS that a few group-calling service is used.
2. the method as described in claim 1, it is characterised in that the base station increase is used at least one described group-calling service
MCS exponent number, including：
The base station chosen from least one described group-calling service where group down channel quality indicate CQI value be more than
M group-calling service of first threshold；Wherein, the CQI of group value is the CQI that the one group of multiple terminals included are reported
Value average value, M is positive integer；
The exponent number for the M MCS that the M group-calling service is respectively adopted for the base station increase.
3. the method as described in claim 1, it is characterised in that also include：
If the bandwidth of at least one group-calling service distribution is less than or equal to first pre-set bandwidths, then the base station is sentenced
Whether the bandwidth distributed at least one described group-calling service of breaking is less than the second pre-set bandwidths；Wherein, second pre-set bandwidths
Less than first pre-set bandwidths；
If the bandwidth of at least one group-calling service distribution is less than second pre-set bandwidths, then the base station reduces to institute
State the MCS of at least one group-calling service use exponent number.
4. method as claimed in claim 3, it is characterised in that the base station reduces to be used at least one described group-calling service
MCS exponent number, including：
The base station chosen from least one described group-calling service where group down channel quality indicate CQI value be less than
N number of group-calling service of Second Threshold；Wherein, the CQI of group value is the CQI that the one group of multiple terminals included are reported
Value average value, N is positive integer；
The base station reduces the exponent number for N number of MCS that N number of group-calling service is respectively adopted.
5. the method as described in claim 2 or 4, it is characterised in that the CQI's that the one group of multiple terminals included are reported
The average value of value is：
CQI value that the terminal for connecting RRC CONNECT states in radio resource control in one group is reported and
The average value of the value for the CQI that terminal in radio resource control free time RRC IDLE states is reported.
6. a kind of base station, it is characterised in that including：
Distribute module, band is distributed for the exponent number according to the default modulation coding mode MCS used at least one group-calling service
It is wide；Wherein, the terminal under the covering of base station is divided into multiple groups, wherein every group includes multiple terminals, the group-calling service is any
The business that one terminal is called simultaneously with the other-end in any one group；
Adjusting module, if being wider than the first pre-set bandwidths for the band that at least one described group-calling service is distributed, then the base
The exponent number for the MCS that increase of standing is used at least one described group-calling service.
7. base station as claimed in claim 6, it is characterised in that the adjusting module increase is at least one described group-calling service
The MCS of use exponent number, including：
The adjusting module chosen from least one described group-calling service where group down channel quality indicate CQI value
More than M group-calling service of first threshold；Wherein, the CQI of group value is that the one group of multiple terminals included are reported
CQI value average value, M is positive integer；
The exponent number for the M MCS that the M group-calling service is respectively adopted for the adjusting module increase.
8. base station as claimed in claim 6, it is characterised in that the adjusting module is additionally operable to：
If the bandwidth of at least one group-calling service distribution is less than or equal to first pre-set bandwidths, then the adjustment mould
Block is judged as whether the bandwidth of at least one group-calling service distribution is less than the second pre-set bandwidths；Wherein, described second preset
Bandwidth is less than first pre-set bandwidths；
If the bandwidth of at least one group-calling service distribution is less than second pre-set bandwidths, then the adjusting module reduces
The MCS used at least one described group-calling service exponent number.
9. base station as claimed in claim 8, it is characterised in that the adjusting module reduces at least one described group-calling service
The MCS of use exponent number, including：
The adjusting module chosen from least one described group-calling service where group down channel quality indicate CQI value
Less than N number of group-calling service of Second Threshold；Wherein, the CQI of group value is that the one group of multiple terminals included are reported
CQI value average value, N is positive integer；
The adjusting module reduces the exponent number for N number of MCS that N number of group-calling service is respectively adopted.
10. the base station as described in claim 7 or 9, it is characterised in that the CQI that the one group of multiple terminals included are reported
The average value of value be：
CQI value that the terminal for connecting RRC CONNECT states in radio resource control in one group is reported and
The average value of the value for the CQI that terminal in radio resource control free time RRC IDLE states is reported.
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| CN201710510407.2A CN107147475B (en) | 2017-06-28 | 2017-06-28 | Modulation coding mode adjusting method and base station |
| PCT/CN2017/118083 WO2019000873A1 (en) | 2017-06-28 | 2017-12-22 | Method for adjusting modulation and coding scheme (mcs) and base station |
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| CN109996336A (en) * | 2017-12-29 | 2019-07-09 | 上海诺基亚贝尔股份有限公司 | Method, apparatus and computer-readable medium for channel bonding |
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| WO2019000873A1 (en) | 2019-01-03 |
| CN107147475B (en) | 2020-04-14 |
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