CN106034103B - The indicating means and instruction device of terminal uplink quadrature amplitude modulation QAM coding mode - Google Patents
The indicating means and instruction device of terminal uplink quadrature amplitude modulation QAM coding mode Download PDFInfo
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Abstract
The present invention provides the indicating means and instruction device of a kind of terminal uplink quadrature amplitude modulation QAM coding mode, wherein whether the indicating means includes: to support a scheduled uplink QAM coding mode, one additional capabilities of configuration to indicate information according to terminal；The transmittability grade UE category information of the additional capabilities instruction information and terminal is sent, to base station with the uplink QAM coding mode for reporting the terminal to support.The indicating means and instruction device of the terminal uplink quadrature amplitude modulation QAM coding mode of the embodiment of the present invention, base station reports additional capabilities information corresponding with modulation coding scheme by terminal, extend terminal capability grade reports range, terminal can report whereby supports 64QAM ability, so that the efficiency and quality of uplink can be improved.
Description
Technical field
The present invention relates to wireless domain, in particular to a kind of instruction of terminal uplink quadrature amplitude modulation QAM coding mode
Method and instruction device.
Background technique
Known, uplink 64QAM is the high order modulation technique that 64QAM is used in uplink, can be improved transmission speed
Rate, the availability of frequency spectrum and user's peak rate.The modulation efficiency of 64QAM is high, while high to the requirement of the signal-to-noise ratio of delivering path, and one
As apply in the preferable center of housing estate of channel condition and the lower user of movement speed.It can be significant using uplink 64QAM technology
Peak rate is promoted, meets and takes the photograph i.e. biography demand.
The downstream transmission ability of terminal UE is divided into several ability ratings in 3GPP agreement, each ability rating is corresponding
One group of downstream transmission ability, including supported maximum bit rate and certain modulation coding scheme whether can be used.?
The transmittability grade (UE category) for defining UE in 36.306 agreement of 3GPP in a tabular form is as follows:
As can be seen from the above table, 10 kinds of UE ability ratings, and only category 5 are shared in standard scheme at present,
Category 8 can support uplink 64QAM.
Terminal supports flexible ability to indicate that there are certain difficulties at present:
1. the terminal capability grade supported in standard is limited, limited flexibility.According to the regulation in current standard, terminal can
The downlink modulation coding mode of support has 5 kinds, and supported uplink modulation coding scheme has 4 kinds, therefore the supported tune of terminal
Coding mode processed at most can be 5*4=20 kind, but as shown above, UE ability rating only has 10 kinds, can not indicate whole combinations.
Since terminal capability combination is limited, and the ability instruction of uplink and downlink is coupled, therefore terminal capability refers to
In showing, the relatively small set in the combination of uplink and downlink ability rating and the practical tenability of terminal can only be selected.For example, user equipment downlink
Support the transport block size of 75376bit, uplink also supports the transport block size of 75376bit, but does not have in terminal capability grade
The combination of { DL-75376, UL-75376 }.In conjunction with the regulation in current standard, the only terminal of { DL-75376, UL-51024 }
Ability instruction, the transmittability for causing terminal to actually reach are significantly less than the supported transmittability of terminal.Such as above-mentioned example
In, since the uplink ability of the ineffective activity that terminal capability grade reports, terminal has dropped 32%.
In view of the limitation of terminal capability number of levels, according to the regulation in Current standards, terminal capability grade can only be taken
Meet uplink ability and meets in the terminal capability grade of downlink transfer ability lower one, i.e. UE_category=
Min { UE_category_DL, UE_category_UL }.
2. terminal supports uplink 64QAM ability difficult.Category 5 need to support downlink 4 to flow, and category 8 is needed
Downlink 8 is supported to flow, industrial circle flows downlink 4 at present and 8 streams are without demand, and in the regulation of UE ability rating, uplink
It is coupled with downlink transfer ability and forms a UE ability rating.Therefore consider category 5, category 8UE's
Downlink transfer ability is without industrial circle demand, therefore terminal pushes difficulty larger, and realizes that time point is also later.Under present circumstances
Using category 5, category 8 supports the difficulty of uplink 64QAM also just larger.
To sum up, based on current Standardization, only has UE category information for the capability indication information of terminal.
It is limited to the denotable uplink and downlink combined ability number of UE category, all possible uplink and downlink ability rating cannot be referred to UE
It shows and, so that UE can be made to be unable to reach highest transmission performance.Further, consider uplink high-rank modulation coding scheme, it can
The prior art for supporting uplink 64QAM realizes except above-mentioned terminal and pushes difficulty big, realizes time point later disadvantage
Outside, low, load balance ability inequality that there is also the availability of frequency spectrums, to the demanding disadvantage of channel condition.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of instructions of terminal uplink quadrature amplitude modulation QAM coding mode
Method and instruction device extend the range that reports of UE ability rating, and UE can be reported whereby supports 64QAM ability, so as to mention
The efficiency and quality of high uplink.
To solve the above-mentioned problems, the present invention provides a kind of fingers of terminal uplink quadrature amplitude modulation QAM coding mode
Show method, comprising:
A scheduled uplink QAM coding mode, one additional capabilities of configuration whether is supported to indicate information according to terminal；
The transmittability grade UE category information of the additional capabilities instruction information and terminal is sent to base station,
With the uplink QAM coding mode for reporting the terminal to support.
Further, the terminal further indicates that information and UE category are believed by carrying the additional capabilities
The RRC signaling of breath, the uplink QAM coding mode for reporting the terminal to support.
Further, the additional capabilities instruction information is located at the functional group instruction information FGI (feature of RRC signaling
Group Indicators) in predetermined bit position.
Further, if the additional capabilities information indicates that the terminal supports the scheduled uplink QAM coding mode,
" 1 " is configured to by described bit；If the additional capabilities information indicates that the terminal does not support the scheduled uplink QAM to compile
Code mode, then be configured to " 0 " for described bit.
Further, the scheduled uplink QAM coding mode is uplink 64QAM coding mode.
Invention further provides a kind of indicating means of terminal uplink quadrature amplitude modulation QAM coding mode, comprising:
Receive the additional capabilities instruction information and UE category information that terminal is sent, wherein the additional capabilities refer to
Show that information is used to indicate whether the terminal supports a scheduled second uplink QAM coding mode；
According to the UE category information, the first uplink QAM coding mode that terminal is supported is determined；
Information is indicated according to the additional capabilities, is supported on described second in additional capabilities instruction information instruction terminal
When row QAM coding mode, by the coding staff of the higher-order in the first uplink QAM coding mode and the second uplink QAM coding mode
Formula, the highest uplink QAM coding mode supported as terminal；And it is not propped up in additional capabilities instruction information instruction terminal
When holding the second uplink QAM coding mode, the highest uplink QAM that the first uplink QAM coding mode is supported as terminal is compiled
Code mode.
Further, the RRC signaling that the base station is further sent by terminal receives the additional energy that the terminal is sent
Power indicates information and UE category information.
Further, the additional capabilities instruction information is located at the predetermined bit position in the FGI information of the RRC signaling.
Further, the second uplink QAM coding mode is uplink 64QAM coding mode.
Further, described according to the UE category information, determine that the first uplink QAM that the terminal is supported is compiled
Code mode includes: to inquire the corresponding relationship of preset UE category and coding mode according to the UE category information
Table determines the first uplink QAM coding mode and the first downlink coding mode that the terminal is supported；Wherein, the indicating means
Further include:
By first downlink coding mode, the highest downlink coding mode supported as terminal.
Further, information is indicated according to the additional capabilities, determine whether terminal supports the second uplink QAM to encode
Mode includes:
Additional capabilities in the received FGI information are indicated corresponding bit of information to demodulate, if after the demodulation
The position bit be " 1 ", it is determined that terminal supports the second uplink QAM coding mode, if the position bit after the demodulation is " 0 ",
Then determine that terminal does not support the second uplink QAM coding mode.
In addition, the present invention also provides a kind of instruction device of terminal uplink quadrature amplitude modulation QAM coding mode, packet
It includes:
Configuration module, for whether supporting a scheduled uplink QAM coding mode, one additional capabilities of configuration to refer to according to terminal
Show information；
Reporting module, for sending the additional capabilities instruction information and UE category information to base station, to report
The uplink QAM coding mode that the terminal is supported.
Further, the reporting module is used to indicate information and UE category by carrying the additional capabilities
The RRC signaling of information, the uplink QAM coding mode for reporting the terminal to support.
Further, the additional capabilities instruction information is located at the default ratio in the functional group instruction information FGI of RRC signaling
Special position.
Further, if the additional capabilities information indicates that the terminal supports the scheduled uplink QAM coding mode,
" 1 " is configured to by described bit；If the additional capabilities information indicates that the terminal does not support the scheduled uplink QAM to compile
Code mode, then be configured to " 0 " for described bit.
Finally, invention further provides a kind of instruction device of terminal uplink quadrature amplitude modulation QAM coding mode, packet
It includes:
Receiving module, for receiving the additional capabilities instruction information of terminal transmission and the transmittability grade UE of terminal
Category information, wherein the additional capabilities instruction information is used to indicate whether the terminal is supported on one scheduled second
Row QAM coding mode；
First judgment module, for according to the UE category information, determining that the first uplink QAM that terminal is supported is compiled
Code mode；
Second judgment module, for indicating information according to the additional capabilities, in additional capabilities instruction information instruction
When terminal supports the second uplink QAM coding mode, by the first uplink QAM coding mode and the second uplink QAM coding mode
In higher-order coding mode, as terminal support highest uplink QAM coding mode；And refer in the additional capabilities
When showing that information instruction terminal does not support the second uplink QAM coding mode, using the first uplink QAM coding mode as terminal branch
The highest uplink QAM coding mode held.
Further, the RRC signaling that the receiving module is sent by terminal receives the additional capabilities that the terminal is sent
Indicate the transmittability grade UE category information of information and terminal.
Further, the additional capabilities instruction information is located at the predetermined bit position in the FGI information of the RRC signaling.
Further, first judgment module is used to inquire preset UE according to the UE category information
The mapping table of category and coding mode determine under the first uplink QAM coding mode and first that the terminal is supported
Row coding mode；
Wherein, the first judgment module is also used to the highest by first downlink coding mode, supported as terminal
Downlink coding mode.
Further, the second judgment module is used for additional capabilities instruction information in the received FGI information is corresponding
Bit are demodulated, if the position bit after the demodulation is " 1 ", it is determined that terminal supports the second uplink QAM coding mode；
If the position bit after the demodulation is " 0 ", it is determined that terminal does not support the second uplink QAM coding mode.
Above-mentioned technical proposal of the invention at least has the following beneficial effects:
In above scheme, terminal by the FGI information reporting additional capabilities information of RRC signaling, the additional capabilities information with
The modulation coding scheme of terminal is corresponding, wherein carries the information using the idle bit in FGI information；On the comparison terminal of base station
Modulation coding scheme indicated by modulation coding scheme indicated by the UE category information of report and additional capabilities information,
Take maximum value in the two as the practical supported highest modulation coding scheme of terminal.The present embodiment is reported and is adjusted by terminal
The corresponding additional capabilities information of coding mode processed, extends the range that reports of terminal capability grade, terminal can report branch whereby
64QAM ability is held, so that the efficiency and quality of uplink can be improved.
Detailed description of the invention
Fig. 1 shows the processes of the indicating means of the terminal uplink quadrature amplitude modulation QAM coding mode of the embodiment of the present invention
Figure；
Fig. 2 indicates the bit bitmap of FGI information in the RRC signaling of the embodiment of the present invention；
Fig. 3 indicates the another of the indicating means of the terminal uplink quadrature amplitude modulation QAM coding mode of the embodiment of the present invention
Flow chart；
Fig. 4 indicates the composition of the instruction device of the terminal uplink quadrature amplitude modulation QAM coding mode of the embodiment of the present invention
Block diagram；
Fig. 5 indicates the another of the instruction device of the terminal uplink quadrature amplitude modulation QAM coding mode of the embodiment of the present invention
Composition block diagram.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention cannot achieve UE to uplink for limited for the instruction of terminal capability grade in current standard
The problem of instruction of 64QAM, provides the indicating means and instruction dress of a kind of terminal uplink quadrature amplitude modulation QAM coding mode
It sets.
As shown in Figure 1, the embodiment of the invention provides a kind of instructions of terminal uplink quadrature amplitude modulation QAM coding mode
Method, comprising:
Step S11: whether a scheduled uplink QAM coding mode, configuration one additional capabilities instruction letter are supported according to terminal
Breath；
The additional capabilities instruction information is used to indicate whether the terminal supports the scheduled uplink QAM coding staff
Formula.In the present embodiment, based on current standard, and transmission rate, the availability of frequency spectrum and user's peak rate is combined, can not also
Realize the instruction of a certain specified upstream modulation coding scheme.For example, the coding mode for the most high-order that terminal is supported at present is
64QAM, existing standard are directed to the instruction to uplink 64QAM not yet, in this step S11, the scheduled uplink QAM coding staff
Formula can be uplink 64QAM.Certainly, with the modification of future standard or the raising of terminal software and hardware ability, it is described it is scheduled on
Row QAM coding mode can also be the coding mode of higher order, such as uplink 256QAM.
Step S12: the transmittability grade UE of the additional capabilities instruction information and terminal is sent to base station
Category information, with the uplink QAM coding mode for reporting the terminal to support.
In the present embodiment, the terminal further indicates information and UE category by carrying the additional capabilities
The RRC signaling of information, the uplink QAM coding mode for reporting the terminal to support, the additional capabilities instruction information are located at RRC letter
Predetermined bit position in the functional group instruction information FGI of order specifically carries additional energy using the idle bit in FGI information
Power indicates information, as shown in Figure 2.
In addition, the additional capabilities instruction information is corresponding with the modulation coding scheme of the support, if the additional capabilities
Information indicates that the terminal supports the uplink 64QAM coding mode, is configured to " 1 " for described bit；If the additional capabilities
Information indicates that the terminal does not support the uplink 64QAM coding mode, then is configured to " 0 " for described bit.Certainly, described
The meaning of bit numerical value can also be changed to opposite instruction, for example, indicating to support the uplink when being 0 for described bit
64QAM coding mode indicates not supporting the uplink 64QAM coding mode when being 1 for described bit.
In conclusion terminal reports modulation coding scheme indicated by UE category information and additional energy to base station
Modulation coding scheme indicated by force information, extend terminal capability grade reports range, if terminal reports support whereby
64QAM ability, so that the efficiency and quality of uplink can be improved.
Correspondingly, as shown in figure 3, the embodiment of the present invention provides a kind of terminal uplink quadrature amplitude modulation QAM coding again
The indicating means of mode, comprising:
Step S21: the additional capabilities instruction information and UE category information that terminal is sent are received, wherein described attached
Capability indication information is added to be used to indicate whether the terminal supports a scheduled second uplink QAM coding mode；
In the present embodiment, the RRC signaling that the base station is further sent by terminal receives the additional of the terminal transmission
Capability indication information and UE category information, the additional capabilities instruction information are located at the FGI information of the RRC signaling
In predetermined bit position.In addition, ibid, the predetermined second uplink QAM that the terminal of the additional capabilities instruction information instruction is supported
Coding mode is uplink 64QAM.
Step S22: according to the UE category information, the first uplink QAM coding mode that terminal is supported is determined；
Specifically, described according to the UE category information, determine the first uplink QAM coding that the terminal is supported
Mode includes: to inquire the mapping table of preset UE category and coding mode according to the UE category information,
Determine the first uplink QAM coding mode that the terminal is supported and the first downlink coding mode UE-category → DL_MCS,
UL_MCS}；Wherein, the indicating means further include:
By first downlink coding mode, the highest downlink coding mode supported as terminal.
Step S23: indicating information according to the additional capabilities, supports institute in additional capabilities instruction information instruction terminal
When stating uplink 64QAM, by the coding mode of the higher-order in the first uplink QAM coding mode and uplink 64QAM, as terminal branch
The highest uplink QAM coding mode held；And the uplink is not supported in additional capabilities instruction information instruction terminal
When 64QAM, highest uplink QAM coding mode that the first uplink QAM coding mode is supported as terminal.
Specifically, information is indicated according to the additional capabilities, determine whether terminal supports that the uplink 64QAM includes:
Additional capabilities in the received FGI information are indicated corresponding bit of information to demodulate, if after the demodulation
The position bit be " 1 ", it is determined that terminal supports the uplink 64QAM, if the position bit after the demodulation is " 0 ", it is determined that terminal
The uplink 64QAM is not supported.
In conclusion base station side receives the UE category information and FGI information that terminal reports, and to attached in FGI information
Corresponding bit of capability indication information is added to be demodulated, by comparing the uplink modulating-coding supported in UE category information
The uplink modulation coding scheme supported in mode and additional capabilities instruction information, determines the supported highest modulating-coding side of terminal
Formula.Channel quality and mobile speed of the base station side according to the supported highest uplink and downlink modulation coding scheme of terminal, in conjunction with terminal
Degree, is scheduled terminal, configures suitable modulation coding scheme.
In addition, as shown in figure 4, the embodiment of the invention also provides a kind of terminal uplink quadrature amplitude modulation QAM coding staffs
The instruction device of formula, comprising:
Configuration module 31 configures an additional capabilities for whether supporting a scheduled uplink QAM coding mode according to terminal
Indicate information；
Reporting module 32, it is above for sending the additional capabilities instruction information and UE category information to base station
The uplink QAM coding mode for reporting the terminal to support.
Specifically, the reporting module is used to indicate that information and UE category are believed by carrying the additional capabilities
The RRC signaling of breath, the uplink QAM coding mode for reporting the terminal to support.The additional capabilities instruction information is located at RRC signaling
Functional group instruction information FGI in predetermined bit position.
Further, if the additional capabilities information indicates that the terminal supports the scheduled uplink QAM coding mode,
" 1 " is configured to by described bit；If the additional capabilities information indicates that the terminal does not support the scheduled uplink QAM to compile
Code mode, then be configured to " 0 " for described bit.
Finally, as shown in figure 5, the embodiment of the present invention provides a kind of terminal uplink quadrature amplitude modulation QAM coding staff again
The instruction device of formula, comprising:
Receiving module 41, for receiving the additional capabilities instruction information of terminal transmission and the transmittability grade UE of terminal
Category information, wherein the additional capabilities instruction information is used to indicate whether the terminal is supported on one scheduled second
Row QAM coding mode；
Specifically, the RRC signaling that the receiving module is sent by terminal receives the additional capabilities that the terminal is sent and refers to
Show that the transmittability grade UE category information of information and terminal, the additional capabilities instruction information are located at RRC letter
Predetermined bit position in the FGI information of order.
First judgment module 42, for determining the first uplink QAM that terminal is supported according to the UE category information
Coding mode；
Specifically, first judgment module 42 is used to inquire preset UE according to the UE category information
The mapping table of category and coding mode determine under the first uplink QAM coding mode and first that the terminal is supported
Row coding mode；Wherein, the first judgment module is also used to as terminal support first downlink coding mode most
High downlink coding mode.
Second judgment module 43 refers to for indicating information according to the additional capabilities in additional capabilities instruction information
When showing that terminal supports the second uplink QAM coding mode, by the first uplink QAM coding mode and the second uplink QAM coding staff
The coding mode of higher-order in formula, the highest uplink QAM coding mode supported as terminal；And in the additional capabilities
When instruction information instruction terminal does not support the second uplink QAM coding mode, using the first uplink QAM coding mode as terminal
The highest uplink QAM coding mode of support.
Specifically, the second judgment module 43 is used for additional capabilities instruction information in the received FGI information is corresponding
Bit are demodulated, if the position bit after the demodulation is " 1 ", it is determined that terminal supports the second uplink QAM coding mode；
If the position bit after the demodulation is " 0 ", it is determined that terminal does not support the second uplink QAM coding mode.
In conclusion terminal is by additional capabilities information reporting, it supports uplink 64QAM ability, and base station can be additional according to this
Ability information determines whether terminal supports uplink 64QAM, if terminal reports it to support uplink 64QAM, uplink biography can be improved
Defeated efficiency and quality.
The indicating means and instruction device of the terminal uplink quadrature amplitude modulation QAM coding mode of foregoing invention embodiment,
Terminal passes through the FGI information reporting additional capabilities information of RRC signaling, the modulation coding scheme pair of the additional capabilities information and terminal
It answers, wherein carry the information using the idle bit in FGI information；The UE category information institute that base station comparison terminal reports
Modulation coding scheme indicated by the modulation coding scheme and additional capabilities information of instruction takes the maximum value in the two as eventually
The practical supported highest modulation coding scheme in end.The present embodiment is reported corresponding with modulation coding scheme additional by terminal
Ability information extends the range that reports of terminal capability grade, and terminal can report whereby supports 64QAM ability, to can be improved
The efficiency and quality of uplink.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (16)
1. a kind of indicating means of terminal uplink quadrature amplitude modulation QAM coding mode characterized by comprising
A scheduled uplink QAM coding mode, one additional capabilities of configuration whether is supported to indicate information according to terminal；
The transmittability grade UE category information for carrying the additional capabilities instruction information and terminal is sent to base station
RRC signaling, with the uplink QAM coding mode for reporting the terminal to support；By base station according to the UE category information,
Determine the first uplink QAM coding mode that the terminal is supported, comprising: according to the UE category information, inquire preset
The mapping table of UE category and coding mode determine the first uplink QAM coding mode and first that the terminal is supported
Downlink coding mode { UE-category → DL_MCS, UL_MCS }.
2. indicating means according to claim 1, which is characterized in that
The additional capabilities instruction information is located at the predetermined bit position in the functional group instruction information FGI of RRC signaling.
3. indicating means according to claim 2, which is characterized in that if the additional capabilities information indicates the terminal branch
The scheduled uplink QAM coding mode is held, is configured to " 1 " for described bit；If the additional capabilities information indicates the end
The scheduled uplink QAM coding mode is not supported at end, then is configured to " 0 " for described bit.
4. indicating means according to claim 1, which is characterized in that
The scheduled uplink QAM coding mode is uplink 64QAM coding mode.
5. a kind of indicating means of terminal uplink quadrature amplitude modulation QAM coding mode characterized by comprising
Receive the RRC signaling for carrying additional capabilities instruction information and UE category information that terminal is sent, wherein institute
It states additional capabilities instruction information and is used to indicate whether the terminal supports a scheduled second uplink QAM coding mode；
According to the UE category information, the first uplink QAM coding mode that terminal is supported is determined, comprising: according to the UE
Category information inquires the mapping table of preset UE category and coding mode, determine that the terminal supports the
One uplink QAM coding mode and the first downlink coding mode { UE-category → DL_MCS, UL_MCS }；
Information is indicated according to the additional capabilities, supports second uplink in additional capabilities instruction information instruction terminal
When QAM coding mode, by the coding mode of the higher-order in the first uplink QAM coding mode and the second uplink QAM coding mode,
The highest uplink QAM coding mode supported as terminal；And institute is not supported in additional capabilities instruction information instruction terminal
When stating the second uplink QAM coding mode, highest uplink QAM coding staff that the first uplink QAM coding mode is supported as terminal
Formula.
6. indicating means according to claim 5, which is characterized in that
The additional capabilities instruction information is located at the predetermined bit position in the FGI information of the RRC signaling.
7. indicating means according to claim 5, which is characterized in that
The second uplink QAM coding mode is uplink 64QAM coding mode.
8. indicating means according to claim 5, which is characterized in that
It is described according to the UE category information, the first uplink QAM coding mode for determining that the terminal is supported includes: root
According to the UE category information, the mapping table of preset UE category and coding mode are inquired, determines the end
Hold the first uplink QAM coding mode supported and the first downlink coding mode；Wherein, the indicating means further include:
By first downlink coding mode, the highest downlink coding mode supported as terminal.
9. indicating means according to claim 6, which is characterized in that
Information is indicated according to the additional capabilities, determines whether terminal supports that the second uplink QAM coding mode includes:
Additional capabilities in the received FGI information are indicated corresponding bit of information to demodulate, if after the demodulation
Bit are " 1 ", it is determined that terminal supports the second uplink QAM coding mode, if the position bit after the demodulation is " 0 ",
Determine that terminal does not support the second uplink QAM coding mode.
10. a kind of instruction device of terminal uplink quadrature amplitude modulation QAM coding mode characterized by comprising
Configuration module, for whether supporting a scheduled uplink QAM coding mode, configuration one additional capabilities instruction letter according to terminal
Breath；
Reporting module, for sending the RRC for carrying the additional capabilities instruction information and UE category information to base station
Signaling, with the uplink QAM coding mode for reporting the terminal to support；By base station according to the UE category information, institute is determined
State the first uplink QAM coding mode of terminal support, comprising: according to the UE category information, inquire preset UE
The mapping table of category and coding mode determine under the first uplink QAM coding mode and first that the terminal is supported
Row coding mode { UE-category → DL_MCS, UL_MCS }.
11. instruction device according to claim 10, which is characterized in that
The additional capabilities instruction information is located at the predetermined bit position in the functional group instruction information FGI of RRC signaling.
12. instruction device according to claim 11, which is characterized in that if the additional capabilities information indicates the terminal
It supports the scheduled uplink QAM coding mode, is configured to " 1 " for described bit；If described in the additional capabilities information instruction
Terminal does not support the scheduled uplink QAM coding mode, then is configured to " 0 " for described bit.
13. a kind of instruction device of terminal uplink quadrature amplitude modulation QAM coding mode characterized by comprising
Receiving module, for receiving the transmittability grade UE for carrying additional capabilities instruction information and terminal of terminal transmission
The RRC signaling of category information, wherein the additional capabilities instruction information is used to indicate whether the terminal supports that one is predetermined
The second uplink QAM coding mode；
First judgment module, for determining the first uplink QAM coding staff that terminal is supported according to the UE category information
Formula, comprising: according to the UE category information, the mapping table of preset UE category and coding mode are inquired,
Determine the first uplink QAM coding mode that the terminal is supported and the first downlink coding mode UE-category → DL_MCS,
UL_MCS}；
Second judgment module indicates information instruction terminal in the additional capabilities for indicating information according to the additional capabilities
It, will be in the first uplink QAM coding mode and the second uplink QAM coding mode when supporting the second uplink QAM coding mode
The coding mode of higher-order, the highest uplink QAM coding mode supported as terminal；And it indicates to believe in the additional capabilities
When breath instruction terminal does not support the second uplink QAM coding mode, the first uplink QAM coding mode is supported as terminal
Highest uplink QAM coding mode.
14. instruction device according to claim 13, which is characterized in that
The additional capabilities instruction information is located at the predetermined bit position in the FGI information of the RRC signaling.
15. instruction device according to claim 13, which is characterized in that first judgment module is used for according to the UE
Category information inquires the mapping table of preset UE category and coding mode, determine that the terminal supports the
One uplink QAM coding mode and the first downlink coding mode；
Wherein, the first judgment module is also used to the highest downlink by first downlink coding mode, supported as terminal
Coding mode.
16. instruction device according to claim 14, which is characterized in that the second judgment module is used for will be received described
Corresponding bit of information of additional capabilities instruction is demodulated in FGI information, if the position bit after the demodulation is " 1 ", it is determined that
Terminal supports the second uplink QAM coding mode；If the position bit after the demodulation is " 0 ", it is determined that terminal is not supported described
Second uplink QAM coding mode.
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| CN108476421B (en) * | 2017-11-23 | 2021-10-15 | 北京小米移动软件有限公司 | Transmission configuration method and device |
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